baber/WOPTO huggingface dataset:
Patent GB-448906-A (GB)
Title: Improvements in or relating to reciprocating piston compressors
IPC: F04B31/00
Filed: 1935-03-08
Abstract: 448,906. Free - piston compressors. SULZER FRERES SOC. ANON., Winterthur, Switzerland. March 8, 1935, No. 7264. Convention date, March 13, 1934. [Class 8 (i)] The pistons 11, 13, of compressors actuated directly by combustion in the cylinders 5, 6, are interconnected so that on variation of the stroke the displacement of the end position within the-internal combustion cylinder is greater than the displacement of that within the gas compression cylinder. Fig. 1 shows this connection as consisting in short connecting-rods 27, 29 connected to cranks on an oscillating shaft 31. Fig. 3 shows the pistons connected to plungers 36, 38 in a liquid column 33 the amount of liquid being varied by a valve 46 coacting with a spring-pressed cylinder 51 subject to fluid pressure through a pipe 53 ; the plungers 36, 38 are connected by a lever fulcrumed on the valve. The gas compression is in this form of apparatus controlled by dashpots 67, 68, Fig. 5, in which a conduit 70 may discharge liquid to influence fuel injection or the liquid column 33 ; alternatively the plunger 36 may have a conical head coacting with an adjustable cage 72, Fig. 6. The liquid columns 33, 34 may be connected by synchronizing columns. The end of stroke positions may be determined by the power developed in the combustion cylinder or by the pressure of air supplied thereto, or of the exhaust gases or in accordance with the speed of a machine driven by the compressed gases or the exhaust combustion gases, or in accordance with the timing of the fuel injection.
Patent GB-1280884-A (GB)
Title: Electrophotographic copying material
IPC: G03G5/14
Filed: 1969-06-12
Abstract: 1280884 Polyepoxide compositions RICOH KK 12 June 1969 [14 June 1968] 7277/72 Divided out of 1280882 Heading C3B [Also in Division H1] A polymer comprises the reaction product of a polymer containing an epoxy group with a water-soluble amino resin, an amino compound, a dibasic acid or an acid anhydride. An epoxy resin is made from glycidyl methacrylate and methyl methacrylate with butyl laurate or ethyl acrylate or butyl acrylate with styrene. This resin is dispersed in water together with dimethylol melamine, trimethylol melamine or urea-formalin resin and ammonium chloride and optionally an acrylic resin, coated on paper and dried at 150‹C. An alternative composition which is electrically conductive is made by dispersing the epoxy resin in water together with polyvinyl alcohol, trimethylol or dimethylol melamine, ammonium chloride, clay, sodium hexametaphosphate and polyvinylbenzyl trimethyl ammonium chloride, coating the mixture on paper and drying at 150‹ C.
Patent GB-451488-A (GB)
Title: Improvements in or relating to the cutting of soles or other articles or blanks from leather or other sheet material
IPC: C14B5/02
Filed: 1936-03-11
Abstract: 451,488. Press knives. COLLINSON, F. B., 6, Field Lane, Litherland, Liverpool. March 11, 1936, No. 7320. [Class 31 (i)] Soles or other blanks b<2> are cut from leather or other sheet material b by a loose press knife a having outwardly directed projections a<3> which form notches c in the waste material b<1> to indicate the position for the press knife in the succeeding row of blanks. Additional notches may be provided at x.
Patent GB-714410-A (GB)
Title: New organic halides and a process for preparing the same
Inventor: BARBER HARRY JAMES
Filed: 1950-12-13
Abstract: The invention comprises organic halides of the general formul R1.S.CHn-3Cln and R2.O.CHn-3Cln, where R1 represents a phenyl radical containing at least one chlorine substituent, R2 is a phenyl radical containing at least one chlorine substituent and at least one methyl substituent and n is 2 or 3.  These compounds may be prepared by liquid-phase chlorination at high temperature of compounds of general formula R1S.CH.3-mClm or R2.O.CH3-mClm where m is 0, 1, or 2, preferably in the presence of a catalyst favouring side-chain chlorination. In examples (1) 4-chlorophenylthiomethylchloride is selectively chlorinated using phosphorus pentachloride as catalyst, to produce 4-chlorophenylthiomethylene dichloride.  In other examples, 4-chloro-2- and 3-methylphenoxymethylene dichlorides; 4 - chlorophenylthiomethotrichloride; and 4 - chloro - 2 - and 3-methylphenoxymethotrichlorides are prepared from the corresponding methyl or methylene chlorides in a similar manner.
Patent GB-434735-A (GB)
Title: Improvements in or relating to motor vehicles
IPC: B60G13/08
Filed: 1934-03-08
Abstract: 434,735. Vehicle spring-suspensions; hydraulic springs. PACKARD MOTOR CAR CO., 1580, E. Grand Boulevard, Detroit, Michigan, U.S.A. March 8, 1934, No. 7441. Convention date, March 13, 1933. [Classes 108 (ii) and 108 (iii)] In a spring suspension for vehicles each of two oppositely disposed wheels is provided with a unit comprising at least one spring for yieldingly supporting the load independently and means connecting the wheels and acting in parallel to cause each wheel to rise in response to a rising movement of the other. The wheels are carried by arms 22 connected to shafts 21 journalled in casings 20 containing the suspension. In the case of the front wheels the casings are carried by the steering knuckles 16 while they are rigidly mounted in the chassis in the case of the rear wheels. The casings contain shock absorbing pistons acting against fluid pressure and interconnected across the vehicle and also additional resilient spring and fluid pressure means for each wheel functioning independently of any other wheel. The shaft 21 is provided with an arm 40 which abuts against rebound and compression pistons 50, 51 operating in cylinders 48, 49. The cylinders 48, 49 are interconnected by a passage 60 which is also in communication with a fluid reservoir 45 by a one-way valve 67 to keep the cylinders 48, 49 replenished. The passage 60 is provided with a valve chamber 63 having an apertured plug 61 and spring-pressed valves. The cylinders 48 on one side of the vehicles are as shown connected by pipes 73 with the cylinders 49 on the opposite side and the reservoirs 45 are interconnected by a pipe 75. In addition each wheel is resiliently supported by means which are restricted to the particular wheel and comprise a pair of pistons 83, 84 against which the arm 40 abuts and two sets of pistons 103, 104 arranged vertically and horizontally and in contact with arms 41, 42 carried by the shaft 21. The pistons 83, 84 are arranged in cylinders having a communicating passage 82 with a valve chamber 87 in which an apertured plug and a pair of spring pressed valves 88, 89 are inserted. These valves comprise cups having flanges 95, 96 which are pressed into contact with the chamber walls by a spring 97 and provided with spring pressed balls 91 and side apertures 93, 94. Normally the fluid passes through the aperture 93 or 94 from the interior of the cup and thence past the ball valve of the other cup but in abnormal acceleration of the shock or rebound the appropriate cup is pressed off its seat to allow the fluid to pass more freely. The cylinders are in communication with the chamber 45. The pistons 103, 104 act against spring pressure each cylinder being open freely to the chamber 45 by passages 106.
Patent GB-567500-A (GB)
Title: Improvements in trap doors interconnected with ladders
IPC: E04F11/06
Filed: 1943-05-11
Abstract: 567,500. Loft-ladders &c. BOOR, J. May 11, 1943, No. 7473. [Class 20 (ii)] An extensible ladder, e.g. for a loft, is interconnected through a flexible linkage with an arm secured to a trap-door so that movement of the ladder from collapsed to extended position opens the trap-door, and vice versa. The ladder 1, of lazy-tongs type is pivoted at 14 to a bracket 2 secured to one wall 3 of the trapdoor opening, a cable 10 being coupled to a bar 11 located at hinge points of the lazy-tongs near the top of the ladder, and passing by way of a pulley 7 fixed on the bracket 2 and a pulley 9 mounted on a fixed arm 8 on the trapdoor 4 to a fixed point on the bracket 2. The ladder may be operated by a cable 15 coupled to the foot 16 of the ladder and passing over pulleys 17 on the bracket and 18 on a wall of the trap-door opening to a convenient point where it may be secured to a cleat 19. The lazy-tongs at one side of the ladder may be extended upwardly so that they project within the trap-door opening when the ladder is extended, in order to form a hand rail for the use of a person using the ladder. A lever 20, pivoted on the bracket 2 and provided with a spade end 21 engages with a bar 16 at the foot of the ladder when the ladder is fully collapsed and retains the ladder in collapsed position ; the lever being disengaged by a sharp jerk on the cable 15 when it is desired to extend the ladder.
Patent GB-1500471-A (GB)
Title: Apparatus for cutting and removing window panels from sheet material
IPC: B31B50/83
Filed: 1976-02-25
Abstract: 1500471 Cutting-out apparatus F L SMITHE MACHINE CO Inc 25 Feb 1976 [3 March 1975] 07488/76 Heading B4B An apparatus for cutting and removing window panels from a web of material 18, e.g. in making window envelopes comprises a rotatable panel cutter roll 10 provided with a cutter 12 for co-operation with an anvil roll 16, conveying means 38, 40 for moving the material between the cutter and anvil rolls so that a panel is cut from the material, a source of negative pressure 30 such that the cut panels are removed from the web of material and deposited into a panel receiving means 24. The panel receiving means is in the form of a hood connected to a source of negative pressure, e.g. a suction fan; alternatively, the source of negative pressure may be produced by a venturi device Fig. 2 (not shown). The web is drawn over a roll 20 and any remaining, partially attached, panels are removed by a knife blade 32. A means 34, 36 for producing a blast of air in order to eject the panels may be provided. In a modification the anvil roller may be replaced by a stationary cylinder or knife blade.
Patent GB-906252-A (GB)
Title: Paper bag
IPC: B65D30/10
Filed: 1960-03-03
Abstract: 906,252. Paper bags. STROMSNAS BRUKS A.B. March 3, 1960 [March 25, 1959], No. 7599/60. Class 94 (2). A paper bag has a trapezoidal bottom with two opposite edges 3 converging and the other two edges 5, 5b, parallel. The bag may be made from a paper tube by folding over flaps 3a, 4a; a tab 4 having been cut in the flap on the narrow side. The purpose is to fit bags together in a ring, with the inclined sides 3b in contact, and the angle of convergence is chosen in accordance with the number of bags to be so fitted together.
Patent GB-345797-A (GB)
Title: An improved method of and means for producing boot and shoe end stiffeners
IPC: A43D8/00
Filed: 1930-03-08
Abstract: 345,797. Boots &c. POCHIN, H. S., Evington Valley Road, Leicester. March 8, 1930, No. 7637. [Class 17 (i).] Stiffeners, machines for. -A machine for expelling impregnant from a margin of a puff comprises plain rollers which move toward each other as the puff is rolled to subject the desired margin to increasing pressure. the rollers are heated. The bearings 11, 15 of the lower and upper rollers, respectively, are arranged in slots 10 in the side frames. Each upper bearing is depressed by a spring 36 and the rollers are held apart for most of their rotation bv cams 26, 28. The rollers and cams are geared together and the cams 26 at the ends of the lower roller have flats 30 which allow the upper roller to move downwards twice in each rotation. The rollers may be marked to facilitate the insertion of the puffs in correct position for the rear margin to be denuded of impregnant. Alternatively, a feeding abutment 54 may be operated by a cam 40 to feed the puff at the correct point in the cycle. The puffs may be skived before rolling. According to the Provisional Specification, one roller may rotate faster than the other to produce an ironing effect on the puff; the rollers may be normally in contact, and may be moved apart as desired by a treadle-operated lever or toggle mechanism ; the trunnions may be eccentric of the rollers ; the rollers may be supported at one end only, and a puff having a concave rear edge treated in two operations, one for each half of the puff ; and the rollers may be slightly concave and convex, respectively.
Patent GB-229882-A (GB)
Title: Improvements in automatic brake mechanism for colliery tubs or corves and like vehicles
IPC: B61B12/06
Filed: 1924-03-26
Abstract: 229,882. Tonks, G. H. March 26, 1924. Railway and like continuous chain, rope, rod, and shaft; back struts; locking vehicle wheels by positive detents. - The movement of mine tubs, corves and like vehicles is automatically arrested in the event of breakage of the main haulage rope or of an intermediate coupling by means of struts which are lowered into engagement with the track and of bolts which are thrust between the wheel spokes. According to one arrangement, the end vehicle of a train to which the main haulage rope is connected is provided with three sliding bars 8<a>, 8<b>, 8<c>. The haulage rope and the coupling 2 for the second vehicle are connected to the respective ends of the upper bar 8<a>. The one end of the second bar 8<b> is connected to a safety coupling 3 connected also to a sliding bar 8 on the second vehicle. The third sliding bar 8<c> is connected by links 10<a> to sliding bolts 12a adapted to engage between the wheel spokes and also carries a support 17<a> for a strut 15<a> hinged at 16a to the underframe of the vehicle. The upper bar 8a has a dependent pin 20 which engages a slotted disc 22 eccentrically pivoted on the bar 8<c> at 23 and held normally in the position shown by a spring plunger 24. The pin 20 passes through a slot in the intermediate bar 8<b> so as not to affect this bar. The second and succeeding vehicles are each provided with a single sliding bar 8 which is arranged to operate wheel engaging bolts 12 in a similar manner to that in which the bolts 12<a> are operated by the bar 8b on the end vehicle, the track engaging struts 15 of these vehicles are however hinged to the respective bars 8 and are normally held raised by fixed supports 17. The bars 8 are connected together by safety couplings such as 3. Should the main haulage rope break, the bars 8<a> and 8<c> are moved rearwardly thereby first engaging the bolts 12<a> with the wheel spokes and then lowering the strut 15<a> into engagement with the track. The braking of the end vehicle in this way causes the slack in the auxiliary couplings 3 to be taken up and the bars 8 to be moved forward to lock the wheels and lower the struts 15 on the second and succeeding vehicles. During the first part of the movement of the upper bar 8<a> this bar and the lower bar 8<c> move together but when the pressure on the spring plunger 24 has been relieved the disc 22 is turned about the pivot 23 to allow the pin 20 to move out of the slot 21 and permit further movement of the bar 8<a> without movement of the bar 8<c>. An auxiliary haulage rope may be connected to the bar 8<b> or this bar may be dispensed with and the safety coupling 3 be connected to the bar 8<c>.
Patent GB-1128787-A (GB)
Title: Processes for the preparation of unsaturated 19-nor-steroids
IPC: C07J1/00
Filed: 1967-02-17
Abstract: 1,128,787. Steroids. ROUSSEL-UCLAF. 17 Feb., 1967 [18 Feb., 1966; 20 Oct., 1966], No. 7679/67. Addition to 1,099,006. Heading C2U. The invention comprises an 11#-acyloxy-17- R<SP>1</SP>-gona-4,9-dien-3-one wherein R<SP>1</SP> represents an oxygen atom or the group wherein R<SP>2</SP> represents a hydrogen atom or an acyl group derived from an organic carboxylic acid, and R<SP>3</SP> represents a hydrogen atom or a substituted or unsubstituted saturated or unsaturated hydrocarbon group; and a process for the preparation of a 17-R<SP>1</SP>-gona-4,9,11-triene- 3-one (wherein R<SP>1</SP> is as defined above) or a D- homo homologue thereof, in which the corresponding 11#-hydroxy or 11#-acyloxy-17-R<SP>1</SP>- gona-4,9-dien-3-one, in which the acyl group is derived from an organic carboxylic acid having 1-4 carbon atoms, is treated at an elevated temperature with an organic carboxylic acid having from 1 to 4 carbon atoms. The reaction may be effected above 50‹ C. with formic or acetic acids. The 11#-acyloxy-17-R<SP>1</SP>-gona-4,9- dien-3-one (or D-homo homologue) may be prepared by reaction with an organic carboxylic acid (C 1 -C 4 ) of the corresponding 11#-hydroxy derivative.
Patent GB-573720-A (GB)
Title: Improvements in or relating to the production of derivatives of propionaldehyde
IPC: C07C45/64
Filed: 1940-04-29
Abstract: Acrolein is reacted with hypohalogenous acid at a temperature not above 30 DEG  C. to produce a  - halogen - b  - hydroxy - propionaldehyde which may be converted to glycerol by saponification with weak alkali and subsequent hydrogenation of the glyceraldehyde. Preferably, the reaction with hypohalogenous acid is effected in the presence of enough water to dissolve all the acrolein; otherwise there is reduced yield which, however, is mitigated by agitation. The halogen hydroxy propionaldehyde may be salted out as it is produced or may be extracted with a solvent.  It may be converted to halogen-acrolein by distillation with steam.  In examples: (1) chlorine is introduced into an aqueous solution of acrolein at 2 DEG C. and the product is extracted with ethyl acetate, preferably with the addition of salt; it is saponified by heating at 40 DEG  C. with sodium bicarbonate; (2) chlorine is passed into aqueous acrolein at 10 DEG  C., the product being salted out with sodium sulphate; the mother-liquor is distilled, yielding a -chloracrolein.
Patent GB-547284-A (GB)
Title: Improvements relating to hydraulic valve units
IPC: B63H25/22
Filed: 1941-06-18
Abstract: 547,284. Valves. RIDLEY, J. C. June 18, 1941, No. 7684. [Class 135] A hydraulic system is provided with a unit having passages 13, 14 in parallel either of which can be closed by a valve 24 or 25 when the flow becomes unbalanced due to a leak from one of the pipe lines connected to the passages, the valves being carried by a rocker 23, lightly held in the neutral position by a spring-pressed plunger 27 engaging a flat 26. A valve is held closed after operation by one of a pair of pivoted arms 31 connected by a spring 32, unless the valves are manually reset by plungers movable in the passages or by operating a U-bar 36.
Patent GB-199136-A (GB)
Title: Improvements in or relating to folding boxes or the like
IPC: B65D5/10
Filed: 1922-03-16
Abstract: 199,136. Dring, J. B. March 16, 1922. Specially-shaped boxes made from special blanks. -A folding box formed from a single blank and having closed ends formed by overlapping interlocking projections has the end flaps or projections g, Fig. 1, on the part a destined to form the back of the box when folded, formed with slightly curved outer edges extending from one edge of the back to the other so that the box when made up will have a slightly curved front b, a flat back a and closed ends, Fig. 2. The portion b has tongues k engaging slits h in the flaps g and reinforcing tongues or projections n may be provided which when folded over the flaps g and engaged in slits strengthen the closure at the junction of the folds, X, X and Y, Y and point towards the middle of the folded ends: additional projections o on the part b also fold under the flaps g. Several forms of blank having modified projections and tongues are described, the projections in some cases standing out above the box to serve as price tickets. To give additional security a strip of paper may be fastaned across the back of the box, the projecting ends thereof forming handles or a device for attaching the box to a support; such projections may be formed by cut-out portions of the blank.
Patent GB-625477-A (GB)
Title: Improvements in torque spanners
IPC: B25B23/142
Filed: 1947-12-10
Abstract: 625,477. Torque spanners. KEEN, F. L. Dec. 10, 1947, No. 7748. [Class 61(iii)] A torque spanner has a tubular handle 13 with a head 14 housing a cam 16 supported by trunnions in ball recess. An adjustable spring 19 presses a roller 26 against the concave portion 27 of the cam by means of a parallel link mechanism 21, 22. The cam has a lug for attaching a box spanner, &c. When the reaction of the nut, &c. is sufficient the roller rides out of the cam depression and no further tightening occurs until it drops in again after a complete turn, when a fresh tightening impulse is given to the nut.
Patent GB-1503273-A (GB)
Title: List finder
IPC: B42D3/16
Filed: 1976-02-27
Abstract: 1503273 List finders CARL MFG CO Ltd 27 Feb 1976 [28 Feb 1975] 07775/76 Heading B6E The base 1 of a list finder has an abutment tongue 7 cantilevered to a side wall thereof. An edge 2a of a hinged cover 2 abuts an edge of the tongue 7 when biased open by a torsion spring (6), Fig. 1 (not shown). By depressing the tongue 7, either by pressure directly applied thereto or applied to index cards 5 located over the tongue, the cover 2 pivots to a second, flat position shown in dotted lines.
Patent GB-248191-A (GB)
Title: Improvements in umbrellas, sunshades and the like
IPC: A45B15/00
Filed: 1925-03-23
Abstract: 248,191. Deaves, M. A. March 23, 1925. Covers.-A cover of the kind adapted to be engaged with and readily detached from an umbrella &c. frame is provided with a cylindrical cap 7, Fig. 1, at the apex to slide over the end of the stick, bead sockets 6 at the ends of the seams to engage the ends of the ribs, and with strap loops 8, Fig. 4, which embrace the ribs 4 and are secured by snap fasteners 9.
Patent GB-140764-A (GB)
Title: Improvements in or relating to dyeing vats
IPC: D06B5/00
Filed: 1920-03-16
Abstract: 140,764. Vallaeys, A. A. March 21,1919, [Convention date]. Vats, construction of.-Relates to closed dyeing-vats with means for exhausting vapours, and consists in the provision of two partitions in the vat, one perforated and extending to the bottom, the other solid and having a space at the bottom, and also of pivoted doors connected to the valve controlling the exhaust. The vat has a perforated partition A, Fig. 1, and a solid partition B which extends to near the bottom. The sides of the vat are closed, and doors C, D at the front and back are pivoted at E, F and are geared to a flap valve I connecting the vat to a chamber H leading to a collector K, kept at reduced pressure, by a head L which reaches up to the arm of the collector to prevent water of condensation from running back. The valve I opens with the doors C, D, and vapours are then drawn in by the collector. A coil M vapourizes condensed water on the walls. The vat accessories are supported on brackets N, these including the dyeing-roller 0, driving-gear, the guides S, T, and the collector K. The driving is controlled by pull cords 7, Fig. 2, operating a pinion 4 engaging a circular rack 2 sliding on a spindle 3 and carrying the supporting-arms 1 of an unclutching-roller.
Patent GB-242152-A (GB)
Title: Improvements in artificial limbs for the "symes" amputation
IPC: A61F2/60
Filed: 1925-03-24
Abstract: 242,152. Farrier, L. S. March 21, 1925. Limbs, artificial.-A limb for use with the Syme's operation is provided with an ankle piece in the form of a metal casting a having a groove to receive the cylindrical portion e of the ankle joint, a metal plate d with a rubber pad r supporting the stump being provided. Further pieces r of rubber act as buffers. The casting a is of aluminium or one of its alloys and is secured to a perforated metal shin-piece b by rivets. A U-bolt u secures the ankle piece to the foot, and the limb is attached to the stump by a strap passing through slots in the shin-piece b.