-

1. * GB785183 (A)
Description: GB785183 (A) ? 1957-10-23
High-speed sheet-feeding mechanism
Description of GB785183 (A)
PATENT SPECIFICATION
2 ' ot Date of Application and filing Complele Specification March 13,
4 - No 7792 /56.
Application made in United States of America on April 15, 1955.
Complete Specification Publi Shed Oct 23, 1957.
Index at Acceptance:-Class 100 ( 1), Bl O(A 4: C 1 X: C 18).
Internatonal Clasification:-B 31 f.
COMPLETE SPECIFICATION "High-speed sheet-feeding mechanism" We, BALJAK
CORPORATION, a Corporation organised under the laws of the State of
Delaware, of 100 West 10th Street, City of Wilmington, State of
Delaware, United States of America, do hereby declare the invention,
for which we pray that a patent may be granted to us, and the method
by which it is to be performed, to be particularly described in and'
by the following statement:This invention relates to improvements in
blank feeding mechanisms for folding box machines of the type in which
a flat, or nearly flat blank of foldable sheet material, for example
paperboard, is forced through a folding die by a plunger to fold the
blank into hollow box form.
Machines of the aforementioned type,' in addition to folding the blank
during its passage through the die, generally also perform a locking
operation on the blank to lock certain blank portions, such as walls,
panels, tabs or flaps together so that these blank portions thereafter
remain locked in box forming position without the aid of additional
connecting means, such as adhesive, staples, rivets, or the like '
However, the invention is not limited in its application to machines
for the glueless assembly of folding boxes but offers many advantages,
if applied to die and plunger machines for setting up glued boxes.
The success of the folding operation performed by a plunger and die
mechanism depends in a large measure on the accuracy with which a box
blank is deposited on the die If the blank is slightly out of position

2. at the moment the plunger engages it, the blank will not fold at the
intended fold lines and, if it is of the self-locking type, the locks
will generally not engage Consequently the blank must be discarded as
waste In many instances a misplaced blank also jams in the mechanism
and requires stopping of the machine in order to remove it.
M The prior United States patent to Thomas R Baker and Edward J
Pagendarm, No.
2,624,249, issued January 6, 1953, discloses a blank feeding mechanism
of the general type to which this invention relates The 50 mechanism
comprises basically one, or a plurality of vacuum powered suction cups
which are moved by a mechanical mechanism in such a way as to pick up
a blank at a certain withdrawal position; for example by '55 removing
it from the end of a stack of blanks:
The withdrawn blank is then moved along a prescribed and controlled
path to a deposit position, for example to a folding die through which
a plunger subsequently forces the 60 blank The position in which the
blank is deposited is remote from the position at which the blank is
picked up and generally lies at an angle with respect thereto.
Prior to action by the plunger on the 65 blank, the blank may be
pre-folded, or certain creases be broken by the action of the feeder
which in such instances does not release the blank until the blank has
passed certain obstacles, for example elements of a 70 pre-folding die
lying above, or in advance to, the main folding die This aspect forms
the subject matter of a United States patent to Thomas R Baker and
Frank M,Lefief, No 2,655,843, issued October 20, 1953 75 The present
invention is concerned with certain improvements of the blank feeding
and blank handling mechanisms disclosed in the aforementioned patents
and its primary object is to modify the action of the 80 mechanism
which controls the motion of the pneumatic feeder in such a way as to
permit greatly increased machine speeds without objectionable
vibration.
Observations have shown that an increase 85 in the production rate
leads to disturbances, primarily vibrations, which have their source
in two phenomena, acceleration and deceleration problems, and problems
of air resistance 90 I v'I T 85 p 183 1956.
The feeding and blank handling mechanism disclosed in the
aforementioned patents executes a motion which is best described by
reference to the travel of the blank.
The blank is first removed from the magazine in a direction
substantially normal to its plane This is basically a translatory
motion The blank is theli swung through an arc into the new angular
position opposite the -folding die or dies This second phase of motion
is basically a rotative or oscillatory motion, the center of
oscillation being at some distance from the plane of the blank.

3. During the second phase of motion the blank is greatly accelerated
until it reaches its maximum speed at a point approximately half way
along the arc on which the blank moves, followed by a rapid
deceleration when the second phase of motion terminates.
The second phase of motion is then followed by another translatory
motion during which the blank is deposited on the folding die or is
forced into the pre-folding die, as the case may be It is evident that
the first and third phases of motion must be executed at a slow rate
since the blank encounters substantial air resistance when it is moved
in a direction normal to its plane.
The rapidity with which all motions must be carried out is readily
appreciated from the fact that machines incorporating the present
invention are in successful commercial operation with a production
rate of 385 boxes per minute for a machine fitted with two dies and
two plungers.
The improved feeder control mechanism which forms the subject of the
present invention modifies the oscillatory phase of the feeder motion
by substantially reducing the peak velocity which is reached at a
point midway of the arc through which the blank is moved This is
accomplished by continuously varying the radius of oscillation in a
controlled fashion In this way the angular acceleration of the suction
feeder is reduced materially without shortening the path of travel or
impairing the other qualities and features of the mechanism.
Also, the invention renders unnecessary the use'of cams in the drive
mechanism, so that the drive of the feeder is positive in all respects
and is essentially reduced to rotative and oscillatory motions which
permit more effective static and dynamic balancing than
cam-and-follower mechanisms.
These and various other objects, features and advantages of the
invention will appear more fully from the detailed description which
follows accompanied by drawings showing, for the purpose of
illustration, a preferred embodiment of the invention The invention
also consists in certain new and original features of construction and
combination of elements hereinafter set forth and claimed.
Although the characteristic features of this invention which are
believed to be novel will be particularly pointed out in the claims
appended hereto, the invention itself, its objects and advantages, and
the manner in 70 which it may be carried out may be better understood
by referring to the following description taken in connection with the
accompanying drawings forming a part of it in which: 75 Figure 1 is a
perspective view of the improved feeding mechanism in the position in
which a-box blank is about to be withdrawn from a blank magazine;
Figure 2 is a perspective view of the 80 actuating mechanism of the
feeder in the position in which the blank is about to be deposited on

4. the die, the suction cups of the feeder being omitted for the sake of
clarity; 85 Figure 3 is a perspective view showing the feeding
mechanism, two magazine gates, two plungers and two dies from a
slightly different angle of view, but substantially in the same
operating position as shown in figure 2; 90 Figure 4 is a partially
diagrammatic elevational view representing the geometry of the feeding
mechanism; Figure 5 is a perspective view of the box assembly machine,
certain elements of the 95 machine such as suction cups, plungers and
magazine gates being removed for the sake of clarity This figure
illustrates the joint driving mechanism for the plungers and the
feeder; 100 Figures 6 to 8 are simplified diagrams illustrating the
geometry of the feeding mechanism in contrast to the feeding mechanism
of prior United States patent 2,624,249 105 Referring to the drawings,
the machine comprises a main supporting framework of which a portion
is visible at 11 in figure 1.
This framework supports the various elements of the machine including
a blank 110 magazine 12 comprising a withdrawal gate 13 through which
individual box blanks B of a stack 14 resting on rods 15 may be
withdrawn by suction cups 16 In the illustrated machine there are
three suction cups for each 115 stack of box blanks The suction cups
are mounted on a common transverse bar 17 of preferably rectangular
cross-section.
The ends of the transverse bar -17 are secured to a pair of
double-armed gripper 120 arms 18 of substantially identical
construction, one of these arms being visible in figure 1 Since the
actuating mechanisms at both ends of the bar 17 are substantially
identical it will be sufficient to describe the 125 construction of
operation of one of them.
Flexible tubing 19 connects the suction cups 16 to a suitable source
of suction, for example a vacuum pump (not shown).
The gripper arm 18 is pivotally supported 130 on a first bell-crank
lever 20 at 21 The shorter arm 22 of the double-armed gripper arm 18
carries the transverse bar 17 and the longer arm 23 is provided with
guideways 785,183 from the stack 14 and in the other end position
blanks are deposited on the folding die as shown at B' in figure 3 70
Oscillation of the first bell-crank lever 20 results in a complex
motion of the gripper arm 18 whose end slides and pivots relatively to
the pivot 25 This pivot swings on an arc 56 since it is mounted on the
second bell 75 crank lever 26 operated by the first bell-crank lever
20 through the connecting rod 28.
In order to follow the motions of the various elements of the
mechanism more conveniently, six successive positions are shown 80 in
figure 4 identified by numerals 1 to 6, each increment representing 36
degrees of rotation o-; the drive crank 38.

5. The equal increments 1 to 6 on the circle of the drive crank 38 are
converted into 85 corresponding unequal increments numbered 1 to 6 '
on the arc 51 of the rocking arm 34.
More particularly the first and last increments are the smallest on
the arc 51, whereas the increment between positions 3 and 4 is 90 the
largest.
Turning now to the corresponding positions on the arcs 52, 53 and 54
of the first bell-crank lever 20 the first increment between positions
1 and 2 is extremely small 95 This, as will later be seen, represents
the withdrawal motion of blanks B from the magazine The second and
third increments increase in size whereas the last increment between
positions 5 and 6 is smaller than the 100 preceding one The last
increment corresponds to the motion by which the blank B' is placed
on, or pressed into, the folding die 49.
Pivot 30 of the lever 20 is linked to pivot 105 29 on the second
bell-crank lever 26 by the connecting rod 28 The path of the pivot 29
is represented: by the arc 55 and the path of the pivot 25 engaged by
the feeder arm 22 is represented by the arc 56 110 The first increment
on both arcs 55 and 56 is extremely small, the second, third and
fourth increments are progressively larger and the last increment
between positions 5 and 6 is considerably smaller than the pre 115
ceding one The significance and purpose of the motion of the pivot 25
is best explained by reference to the diagrams, figures 6 to 8.
Of these diagrams, figures 6 and 7 represent, by way of comparison, a
mechanism in 120 which the pivot 25 is fixed and is not employed In
these figures the arc 54 represents the path of the pivot 21, about
which the gripper arm 18 swings on the first bell-crank lever 20
Figure 6 assumes that the plane 125 of the withdrawal gate of the
feeder is truly vertical, represented by the vertical line 57, and it
also assumes that the plane of deposit of the blank is truly
horizontal, represented by the horizontal line-58 The angle between
130 the pick-up position of the blank and its deposit position is 90
degrees.
At the half-way point -of the arc 54 the distance between the pivots
21 and 25 is 24 (see also figure 4) engaging a pivot 25 with freedom
of pivotal movement about, and sliding movement relatively to, the
pivot 25.
The pivot 25 itself is not stationary, but is mounted on a second
bell-crank lever 26, the latter being pivotally mounted on the main
supporting framework 11 of the machine at 27 The second bell-crank
lever 26 is linked to the first bell-crank lever 20 by a connecting
rod 28 engaging the second bell-crank lever at 29 and the first
bell-crank lever at 30.
The first bell-crank lever 20 is pivotally mounted at 31 on the main

6. supporting framework 11 It therefore becomes apparent that oscillation
of the first bell-crank lever 20 about its axis 31 results in
oscillation of the second bell-crank lever 26 about the axis 27 of the
latter by reason of the connecting rod 28 between the two bell-crank
levers.
The first bell-crank lever comprises a further pivot 32 (figures 1 and
4) from which a further connecting rod 33 extends to a rocking arm 34
(figures 4 and 5) The rocking arm 34 is double-armed and is centrally
pivoted on the main supporting framework 11 at 35 The second arm 36 of
the rocking arm 34 is connected by a bar or red 37 to a drive crank 38
on the drive shaft 39 of the machine The drive shaft 39 is driven by a
motor 40 through a train of reduction gears of which one is visible at
41.
Referring to figure 5, the drive crank 38 operates a further link 42
extending to an arm 43 One end of the arm 43 is linked to mechanism
for operating the plungers of the machine, and the other end of the
arm 43 is pivotally supported on an eccentric pivot 44.
The mechanism for operating the plungers of the machine comprises a
transverse plunger bar 45 mounted on cross heads 46.
The, cross heads 46 are slidable on vertical rods of which one is
visible at 47 in figure 5.
The cross heads are connected to the actuating arm 43 in a suitable
manner (not visible in detail in figure 5) so that actuation of the
arm 43 by the crank 38 results in a vertical reciprocating movemfient
of the plunger bar 45.
Turning to figure 3, the plunger bar 45 carries a pair of plungers 48
which cooperate with folding dies 49 on which the deposited blanks B'
rest and through which they are forced by the plungers for setting up
the blanks into box form.
Referring now to figures 4 and 5, the action and motion of the feeder
and of its actuating mechanism is readily followed.
Rotation of the drive crank 38 results in an oscillating motion of the
rocking arm 34.
The rocking arm 34, in turn, imparts an oscillating motion to the
first bell-crank lever 20 (figure 4) The first bell-crank lever oscil.
lates between two end positions of which one is shown in solid lines
in figure 4, the othei end position being shown in broken lines In the
one end position blanks are removec 785,183 smallest and is
represented by D In this position the pivots 25 and 21 lie in a
straight line with the pivotal axis 31 of the first bellcrank lever At
this point the double-armed gripper arm 18 and the gripper bar 17
(figure 4) move at peak velocity during their travel from the magazine
gate to the folding die or vice versa It is an object of this
invention to reduce this peak velocity without reducing the rate of

7. operation of the machine.
It has been found advantageous to set the withdrawal gate of the
magazine at a ten degree slant, as represented in figure 7 This is
done to facilitate continuous feeding of the stack 14 of the blanks
towards the magazine gate during operation of the machine.
The slanted arrangement creates an even less favorable condition,
since it results in an increase in the velocity of the gripper arm at
its half-way point This is due to the fact that the distance d between
the pivots 21 and is smaller in this arrangement than it was in the 90
degree arrangement shown in figure 6.
Turning now to figure 8, representing the operation of the invention,
a decrease in the peak velocity of the gripper arm 18 is brought about
by an increase in the distance between the pivots 21 and 25 As
previously explained, the pivot 25 is not fixed, but moves on an arc
56 about a pivot 27 which is the pivot of the second bell-crank lever.
The motion of the second bell-crank lever is so controlled that the
points 31, 21 and 25 are always in a straight line.
It is at once apparent that the arrangement results in an increase of
the distance between the pivots 21 and 25, as compared to figure 7, by
an amount d& equal to the distance between the pivots 25 and 27 The
total distance between the pivots 21 and 25 is represented by d plus d
1 totaling D' whicfi is even greater than D, the most favorable
previous arrangement of figure 6 As a result of the increase in the
distance between the pivots 21 and 25 the suction cups 16 on the
feeder bar 17 (figure 4) travel at a substantially reduced rate Wind
resistance is reduced, the rate of acceleration and deceleration is
greatly decreased, resulting in smoother and quieter operation of the
machine than would be attainable without the invention.
Considering now the motion of the mechanism in detail, as shown in
figure 4, the path of the feeder bar 17 is represented by the line 60
on which the various positions 1 to 6 of the feeder bar are also shown
in broken lines It is apparent that the removal of the blank from the
magazine gate takes place at an extremely slow rate, as represented by
the increment 1, 2 This insures positive removal of the foremost blank
without disturbing the next blank by suction between the blanks.
During the first phase of the motion the suction cups carrying the
blank perform a translatory motion, removing the blank from the stack
The blank is then swung to travel, 70 edge first, with a minimum of
air resistance as its rate of travel increases between positions 3 and
4, reaching its peak velocity shortly after position 4, when the
pivots 21, 27 and 25 move into a straight line with pivot 75 31 The
blank then decelerates gradually to be deposited in or on the folding
die 49 in position 6.
The entire drive is positive and the complex motion of the feeder is

8. produced entirely 80 by cranks, levers and connecting rods without
cams, cam followers and springs This construction permits effective
static and dynamic balancing of the driving mechanism, and the
relatively low peak velocity obtained 85 by the controlled movement of
the point of pivotal and sliding engagement of the gripper arm permits
attainment of high production rates.
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* 5.8.23.4; 93p
* GB785184 (A)
Description: GB785184 (A) ? 1957-10-23
A bucket wheel excavator for excavating earth or the like
Description of GB785184 (A)
PATENT SPECIFICATION
Iniventor HERBERT RADESTOCK 184 ( | '9 Date of application and filing
Complete Specification: March 13, 1956.
No 7883/56 (Patent of Addition to No 772927 dated Aug 24,-1955).
Complete Specification Published: Oct 23, 1957 -
Index at acceptance:-Class 68 ( 1), F 3 A 2.
International Classification:-E 21 c.
COMPLETE SPECIFICATION
A Bucket Wheel Excavator for Excavating Earth or the like WC,
ORENSTEIN-Ko PPEL UND LUBECKER used to carry a scraper which ensures
that MASCHINENBAU AKTIENGESELLSCHAFT, of the material is transferred
to the conveyor 60-92, Karlstrasse, Lubeck, Germany, a belt in the
desired direction The said German Company, do hereby declare the in
scraper can also be so constructed as to de 50 vention, for which we
pray that a patent may liver the material -onto the belt in either
direcbe granted to us, and the method by which tion of rotation of the

9. bucket wheel.
it is to be performed, to be particularly de According -to the present
invention there is scribed in and by the following statement: provided
a bucket wheel excavator for ex-
This invention relates to an improvement cavating earth or like
materials, said excava 55 in or modification of the bucket wheel ex
tor having a material discharge disc mounted gavator for-excavating
earth or the like, de within a cavity bounded by an annular body
scribed and claimed in United Kingdom which supports the buckets of
the bucket
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* GB785185 (A)
Description: GB785185 (A) ? 1957-10-23
Improvements in the production of 4-hydroxypyrazoles
Description of GB785185 (A)
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The EPO does not accept any responsibility for the accuracy of data
and information originating from other authorities than the EPO; in
particular, the EPO does not guarantee that they are complete,
up-to-date or fit for specific purposes.
X J i 'ti"'t
PATENT SPECIFICATION p?1 r 1:-1 1 i _; - 1 785185
Date of Application and filing Complete Specification: March 14, 1956
No 7930156.

10. Application made in Germany on March 19, 1955.
Complete Specification Published: Oct 23, 1957.
Index at acceptance:-Class 2 ( 3), C 1 E 5 K( 4: 8), C 1 F 4 (A 2: A
3: C 6: D 1: D 2), C 2 B( 30: 37 C 1: 37 L), C 3 A 12 (A 4 A: B 3: C
4), C 3 A 13 A 3 (A 4: B 3: K), C 3 C 3 B. International
Classification:-CO 7 d.
COMPLETE SPECIFICATION
Improvements' in the Production of 4-Hydroxypyrazoles We, BADISCHE
ANILIN & SODA-FABRIK AKTIENGESELLSCHAFT, a German Joint Stock Company,
of Ludwigshafen/Rhein, Germany, do hereby declare the invention, for
which we pray that a patent may be granted to us, and the method by
which it is to be performed, to be paticularly described in and by the
following statement:-
This invention relates, to an, improved mnethod of producing
4-hydroxypyrazoles and to ne Rw 4-hydroxypyrazoes.
Only a few compounds containing the ring systems of
4-hydroxypyrazoles' or the tautomeric pyrazolone-( 4) have hithem been
known Thedr production has been carried out by multi-stage,
troubilesome methods (df.
Liebigs Ann Chemie 313 ( 1900), 1-24).
We have now found that 4-hydroxyplyrazoles are obtained in a simple
way by reacting a beta halogen alphadiketone of the general formula
R-CHX-CO-CO-Rl (in which R and R' represent alkyl, aralkyl, cycloalkyl
or aryl groups, R may also' be a hydrogen atom, and X represents
chlorine, bromine or iodine) with hydrazine or a mono'subistit umion
product of hydrazine, and cyclysing the resultant mionohydrazone by
intramolecular splitting ofif of hydrogen halide at an elevated
temperature advantageously in the presence of an agent which binds the
hydrogen halde.
When using 4-bromtohexanedione-( 2 3) and phenylhydrazine as initial
materials, the reaction may be formulated as follows:
Hs C;A, 'c" %l N Ct.,Hs t A N 1 1 11 i 1 X 5 %AC -c Cs /TA Ch" Instead
of 4-bromohexanetiione-( 2 3) there are also' suitable, inter alia, as
infftigl materials monocbilordiacetyl, mono'bromdiacetyl,
lbr'mo-1-plhlenylbutanedione-( 2 3), 5 bromohexanedione-( 3 4),
4-chlorooptanediont-( 2 3), 6-phenyl-4-bromohexanedione-( 2 3),
3-broo1-p-tolylpropanedione-( 1 2) and
5-cyclohexyl4-bromolhexanedione-( 2 3).
Instead of phenyl hydrazine there can be used for -example
unsubstituted hydrazine, esemicarbqazidei monomethyl, butyl,
cyclohexyl, beny, acetyl, p-toluene sulphonyl, and benzoyl hydrazines,
the isomeric chlorophenylhydrazines, nitrophenylhydrazines, and
naphthylhydrazines The 4-hydroxypyrazoe derivatives unsubstituted on
the N-atom 1 or substituted by CON Hl, methyl, butyl, cyclohexyl,

11. btensyl, acetyl, p-toluene sulphonyl, lPrice OC tii 3 c 5 benzoyl,
chlorophenyl, nitrophenyl and naphthyl groups respectively are then
obtained.
It is surprising that by the action of hydrazine or monosubstituted
hydrazines on the beta monohalogeniated alpfhadiketones, even when
using a larger excess of the hydrazine, it is almost exclusively only
the carbonyl group' farther removed fromn the halogen atom which
enters into' reaction.
While the hydrazone formation in general proce Is, smoothly at
ordinary or lower temperature, for example at frow about 50 up to
about + 300 C the cyclization requires elevated temperatures, as for
example 600 to C as well as advantageously the presence of agents'
which take up' hydro gen halide, as' for example tertiary amines or
alkalies.
The procs can therefore be carried out in two stages, i e by isolation
of the monohydrazon:e and subsequent splitting off of hydrogen halide
In most cases, however, it is possible and advantageous to allow the
whole reaction to proceed in one stage by reacting the
monohalogen-diketone with the -hydrazine in the presence of alkali
metal hydroxides or carbonates earth alkaline earth metal oxides or
hydroxides or of tertiary amines and anm inert solvent at elevated
temperature.
: As solvents inert substances, i e substances which, do not react
with the initial materials and the reaction products, such as benzene,
toluene or tetrahydrolfurane, are suitable in which the end product of
the reaction, namely the hydrogen halide salt of the tertiary amani,
is insoluble or soluble only sparingly Hydrocarbons, such as benzene
and toluene, have the additiond advantage that the' water formed
during the reaction cam be contiuously removed from the reaction
mixture azeotropically On, the other hand, hhowever, it is also
possible to work in aqueous-alcoholic medium in order to keep the
amine salt in solution and to cause the separation of the
4-hydroxypyrazole derivative which is more difficultly soluble
therein.
As agents for taking up the hydrogen halide formed during the
cyolization, not only alkalies, but also in particular tertiary
amines, such as pyridine and trimethylamine and its higher
homologuesr, are suitable If desired an excess of the hydrazine
compound can also be used as the hydrogen halide acceptor, or in some
cases a special cyclization agent can be dispensed with altogether
because the 4hydroxypyrazoles themselves exhibit a wealdy basic
function and are capable of forming hydrohalides which then in, many
cases separate as such.
To avoid undesirable side reactions it has b Uen found to be

12. favourable to carry out the reacions in an inert atmosphere free from
molecular oxygen, as for example under nitrogen In general it is also
advantageous to' use the monoihalogenated-alpha-diketone in less than
the amount required, and to introduce it gradually a little at a times
into the liquid mixture of the other reactants in order to avoid a
self-condensation of the diketone which readily occurs in alkaline
medium.
The 4-hydpyrazole derivatives exhibit amphoreric properties They have
a,good solubility -in dilute mineral acids andy in aqueous alkali
solutions with, the formation of salts, but in general are insoluble
or difficultly soluble in cold neuctral water Their alcoholic
solutions give a strong colour reaction withl ferric chloride.
The 4-hyd Aoxypyrazoles readily accessible by the said process are
valuable inrtermedisre products, in particular for pharmaceutical
products, inseticides and dy Istuffs n-the ferw of their alkali meta
salts they exert a solubilizing effect on certan compounds which are
but sparingly water-soluble A 15 % aqueous solution of the sodium salt
of 1 phenyl 3 -methyl 4 -hydroxypyrazole; for instance, takes, up
about 15 % (by weight) of 70 pyrarmidone (= 1 phenyl 2 3
dimethyl-4dimethylamninopyrazolone 5) whereas pure water dissolves
only 5 % of its weight of said substance.
The following Examples will further illus 75 trate this invention but
the invention is not restricted to' these Examples The parts specified
are parts by weight.
EXAMPLE 1.
193 parts of 4 bromohexanedione-( 2 3) 80 (b.p -Z= 680 to 720 C) are
gradually led, in a weak current of nitrogen, into a mixture of lit)
parts of phenylhydrazine, 150 parts of triethylamine and 1000 parts of
toluene which is situated in a stirring vessel provided with a 85
water remover, preferably by leading it in directly through the
nitrogen inlet tube into the liquid in order to avoid
self-condensation of the broma diketone which can happen upon contact
with the gaseous amine The mixture 90 is heated for 4 hours under
refiux, the theoretical amount of water ( 18 parts) being separated in
the water remover during the, course of the first -2 hours After
cooling, the deposited crystals of triethylamine hydrobronide 95 ( 172
parts) are filtered off by suction and washed with toluene The
filtrate combined with the washing liquid is concentrated at reduced
pressure, 99 parts of 1-phenyl-2methyl-5-ethyl-4-hydroxypyrazole of
melting 100 point 106 to 1090 C thereby separating The remaining
mother liquor is preferably again diluted with toluene and shaken with
5 % aqueous caustic soda solution By neutralizing the aqueous layer
with hydrochloric acid, a 105 further 12 pants of
1-phenyl-3-methyl-5-ethyl4-hydroxypyrazole are obtained.

13. After recrystallization from cyclohexane and a little absolute alcohol
or from methanol and water, the 1-phenyl-3-methyl-5-ethyl-4 110
hydroxypyrazole forms colourless needles melting at 1080 to 1100 C and
which are insoluble in water but soluble in dilute acids and alkalies
In, methanol the compound shows a deep' brown colour with ferric 115
chloride The hydrochloride, obtained by evaporating a solution of 1
phenyl -3methyl-5-ethyl-4-hydroxypyrazole in concentrated
-hydrochloric acid melts at 1320 to 1340 C 120 EXAMPLE 2.
1 mal of 4-bromohexanedione-( 2 3) is first reacted with 1 5 to 2
miols of phenylhydrazine in benzene at temperatures from 50 to -50 C,
the m anophcnyl hydrazone thereby 125 being obtained which forms
yellow crystals of melting point 1100 to 1120 C from cyclohexane and
which is insoluble in water as well as in dilute mineral acids or
allies It is converted into 1-phenyl-3-methyl-5-ethyl-4 130 785,185
ferric chloride colour.
EXAMPLE 5.
A mixture of 48 3 parts of 4-bromohexanedione-( 2 3) and 20 parts of
mothanol is allowed to flow at room temperature while stirring 70
vigorously in the course of four hours into a filtered solution of 30
parts of semicarbazide hydrochloride and 30 parts of anhydrous sodium
acetate in 125 parts of water and 15 parts of methanol After stirring
for a further 75 hours at room temperature the 4-bromohexanedione-( 2
3)-monosemicarbazone which is precipitated in almost quantitative
yield is filtered off by suction, washed with water and recrystallized
from alcohol It has a melting 80 point of 1990 to 200 GC.
For cyclization, 10 parts of the monosemicarbazone are boiled under
reflux for 30 hours with a mixture of 50 parts of triethylamine and 25
parts of normal propanol while stirring 85 and leading in nitrogen The
resultant solution is evaporated to dryness under reduced pressure and
digested with a little hot ethyl acetate.
The crystalline precipitate is filtered off by suction, washed with
water to remove triethyl 90 amine hydrobromide and recrystallized from
normal propanol or ethyl acetate 4 5 parts of 1-carbamido-3-methyl 5
ethyl-4-hydroxypyrazole of melting point 1870 to 189 C are obtained
The new compound in alcoholic 95 solution shows a green ferric
chloride colour.
EXAMPLE 6.
Into a filtered solution of 28 9 parts of phenylhydrazine
hydrochloride and 20 parts of sodium acetate trihydrate in 500 parts
of water 100 there are gradually added while stirring and cooling at
about O O C 22 parts of monochlorodiacetyl (b p 20 = 600 to 65 WC)
After stirring for 12 hours the yellow precipitate formed is filtered
off by suction and dried, 37 parts of 105 monochlorodiacetyl O
monophenylhydrazone being obtained which after recrystallization from

14. methanol or cyclohexane melts at 1580 to 159 CC.
33 parts of the crude monochlorodiacetyl 110 mono-phenylhydrazone are
introduced at 700 to 80 WC while stirring vigorously into a solution
of 25 parts of sodium hydroxide in a mixture of 500 parts of water and
50 parts of methanol -The clear orange coloured solution 115 obtained
after about 30 minutes of stirring is cooled, filtered if necessary
and then acidified with 5 % aqueous sulphuric acid until a p H value
of about 4 is reached The nearly colourless precipitate is filtered
off by suction, 120 washed with water and dried There are obtained 25
5 parts of 1-phenyl-3-methyl-4hydroxypyrazole melting at 164 to 165
GC.
When adding diazotized 3-nitroaniline to an aqueous alkaline solution
of said 4-hydroxy 125 pyrazolone an orange-yellow azo dyestuff is
formed which can be used as pigment.
EXAMPLE 7.
parts of 3-chlorophenylhydrazine sulphate (commercial quality) and 50
parts of sodium 130 hydrwoxy pyrazole by boiling with 1 mel of
triethylamine in toluene.
EXAMPLE 3.
parts of monobromodiacetyl (b, p = 590 to 61 C) dissolved in 80 parts
of toluene are gradually led into a boiling mixture of 54 parts of
plhenylhydrazine, 60 parts of triethylamin and 500 parts of toluene
The whole is then boiled for 3 hours while circulating out the water
formed After cooeling, the precipirated triethylaminie hydrochloride
is, filtered off by suction The dark brown filtrate is, shaken twice
with water and then twice with 5 % caustic soda solution The combined
alkaline extracts are purified by shaking with carbon tetrachloride
and treatment with animal carbon and then hydrochloric acid isi added
until there is a weak acid reaction (p H = 4 to 5).
The precipitated, 1 phenyl 3 mothyl -4hydroxypyrazode is
recrystallized from aqueous alcohol or cyclohexane and absolute
alcohol and then forms colourless crystals of the melting point 1650
to 167 C which in methanol show a green ferric chloride colour and
whiclh are insoluble in water but easily soluble in dilute acids and
alkalies.
The reaction can alsoi be carried out in, two stages as described in
Example 2 by isolating the mionobromodiactryl monophenyl hydrazone
which formsl yellow crystals of melting point 1250 to 1260 C from
cydloexane and thean cyclizing it by boiling it under reflux with
about 1 mol of triethylammne diluted with toluene.
A 15 % aqueous solution of the sodium salt of the
1-phenyl-3-methyl-4-hydroxypyrazole takes up' about 15 parts of
1-phenyl-2 3dimnetthyl 4 -dimethylaininopyrazolone ( 5) of which only
5 % are soluble in pure water.

15. EXAMPLE 4.
38.6 parts of 4-bromohexanedione-( 2 2) are allowed 'toe flow in a
current of nitrogen in the cold inter a mixture of 11 partos of 93 %
hydrazine hydrate, 22 parts of trethylamine and 180 parts of
tetraydrofurane while stirring vigorously After boiling for 3 hours
under reflux they whole is, further stirred for hours, 24 parts of
triethylamie hydrobromide thereby separating out After filtering off
by suction the white needles and separating a small amount of ant
aqueous layer, the filtrate is concentrated 17 parts, of colourless
crystals are obtained which after filtration by suction and
recrystallization from water yield 9 parts of 3 methyl 5 -thyl 4
-hydroxypyrazole of melting point 1790 to 1810 C The remaining
tetrahydrofurane solution is completely evaporated to dryness From the
semi-crystalline residue a further 7 parts of
3-methyl-5ethyl-4-hydroxy-pyrazole are recovered by digestion with
warm benzene and filtration by suction The new compound is soluble
only sparingly in cold water, but has good solubility -in hot water as
well as in dilute acids and alkalies In methanol it shows a
brown-violet 1 1 i 785,185 785,185 acetate trihydrate are dissolved in
1000 parts of water and 200 parts of methanol A mixture of 25 parts of
monochlorodiacetyl and parts of methanol is allowed to flow gradually
into the filtered solution while cooling with ice and stirring
vigorously After stirring for 20 hours, the yellow
3-chlorophenylhydrazone of the monchclonoditcetyl is filtered off by
suction It melts at 136 to 1380 C; the yield amounts to 45 parts.
This product is heated at 900 C for 45 minutes in a solution -of 20
parts of sodium hydroxide in 300 parts of water After cooling,
resinous by-products are filtered off, the filtrate is acidified with
dilute sulphuric acid while stirring and cooling with ice until the p
H value is 4 and 19 parts of 1-( 3 k-chlorophenyl) 3 -methyl 4
hydroxypyrazole are -obtained after filtration by suction and drying.
The compound recrystallized from cyclohexane and propanol melts at 175
to 1760 C and exhibits a deep green colour in methanol solution with
ferric chloride -
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16. * GB785186 (A)
Description: GB785186 (A) ? 1957-10-23
Improvements in or relating to window-sills
Description of GB785186 (A)
r 1 ' ' e: '
j _ PATENT SPECIFICATION o k Inventor: INGEMAR JULIUS EVERT LARSSON 78
s Date of appi cation and filg Complete Specification: March 14, 1956.
-No 7942/56.
Complete Specification Published: Oct 23,-1957
Indx at acceptance:-Class 20 ( 3), J 2 H.
International Classification:-E 04 f.
COMPLETE SPECIFICATION
Improvements in or relating to Window-Sills We, SKANSKA ATTIKEABRIKEN
AB, a Swedish Company, of Perstorp, Sweden, do hereby declare the
invention, for which we pray that a patent may be granted to us, and
the method by which it is to be performed, to be particularly
described in and by the following statement: -
This invention relates to a window sill to be mounted in window
frames.
Such window sills have hitherto been made either of relatively thick
marble or limestone, or of glued structures of laminated wood, veneer
and massive wood laths The disadvantages inherent in these two known
types IS are as for the stone materials high transport costs due to
the large weight, difficulties in handling during the mounting
thereof, breaking of the window sills and the flower pots and vases
which may have been put thereon etc, and as for the wood structures
the low resistance of the surface veneers int.
al to continuous sunlight and spilled water.
The present invention eliminates the drawbacks mentioned above and
provides a window sill having a surface which is very resistant to
impacts, moisture, heat etc, and which can besides be varied in an
unlimited degree as to colours and patterns.
The improved window sill according to the invention is mainly
characterized by the fact that it is formed by a cut length of an
elongate board consisting of several layers bf fibre material, such as
paper, impregnated with a thermosetting resin, said board being

17. moulded so as to present in cross section a profile having a plane
middle portion and bent end portions.
Further features and advantages of the invention will appear from the
following description, reference being had to the accompanying
drawing, in which: Fig 1 is a cross section of a window sill; Fig 2 is
a plan view of part of the window sill.
The window sill shown in the drawing is in the form of an elongate,
longitudinally lPrice 3 s 6 d l profiled, moulded board 1 consisting
of several layers of a fibre material, such as paper, impregnated with
a thermosetting resin, said board being provided both on its 50 upper
side and at its underside with a patterned sheet 2 and 3,
respectively, which is impregnated with a thermosetting resin.
The total material thickness of the board is relatively small as
compared with the length 55 and width thereof, but the board
nevertheless has a large rigidity The said patterned sheets obtain
their finish already in the moulding process The profile of the board
is such that the window sill has downwardly 60 bent edges at the two
longitudinal margins:
and in addition an insignificantly elevated portion on the upper side
adjacent to each longitudinal margin.
The thermosetting resin used for impreg 65 nating the layers 1 and
binding them together is preferably composed of phenolic plastics The
patterned sheets 2 and 3 are preferably impregnated and bound to the
intermediate layers 1 by means of amino 70 plastics.
The moulded board has from the beginning the width that the window
sill is to present, but the board is made in large lengths which are
then cut into the smaller 75 lengths desired for the window sills.
The window sill cut to the desired length is provided at the underside
with wooden blocks 4 at one or more points, which blocks are glued to
the board and to which the 80 brackets for mounting the window sill
are secured.
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* GB785187 (A)

18. Description: GB785187 (A) ? 1957-10-23
Overvoltage protection device
Description of GB785187 (A)
A high quality text as facsimile in your desired language may be available
amongst the following family members:
FR1111572 (A) US2862152 (A) FR69918 (E) US2878428 (A)
FR1111572 (A) US2862152 (A) FR69918 (E) US2878428 (A) less
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The EPO does not accept any responsibility for the accuracy of data
and information originating from other authorities than the EPO; in
particular, the EPO does not guarantee that they are complete,
up-to-date or fit for specific purposes.
PATENT P E IFCTO
PATENT SPECIFICATION
785 187 Date of Application and filing Complete Speclficatlon: March
20, 1956.
No 8619/56.
Application made in Sweden on March 23, 1955.
(Patent of Addition to No 751,443 dated Aug 6, 1954) Complete
Specification Published: Oct 23, 1957.
Index at acceptance:-Class 38 ( 4), A 5 B. International
Classification:-H 02 j.
COMPLETE SPECIFICATION
Overvoltage Protection Device We, ALLIMANNA SVENSKA ELEKIRISKA
AKTIEBOLAGET, a Swedish Company, of Vasteras, Sweden, do hereby
declare the invention, for which we pray that a patent may be granted
to us, and the method by which it is to be performed, to be
particularly described in and by the following statement: -
The present invention relates to a modification of the overvoltage
protection device described and claimed in the specification of our
co-pending application No 22881/54 (Serial No 751,443).
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