baber/WOPTO huggingface dataset:
Patent GB-528317-A (GB)
Title: Improvements in or relating to the manufacture of benzidine
Filed: 1939-04-24
Abstract: 528,317. Catalytic hydrogenation. DU PONT DE NEMOURS & CO., E.I. April 24, 1939, No. 12295. Convention date, April 23, 1938. Addition to 518,985. [Class 1 (i)] [Also in Group IV] Nitrobenzene is reduced with hydrogen in the presence of a nickel catalyst in an aqueous alkaline medium at a temperature above 125C. under pressure, and the product, which contains azobenzene, is hydrogenated at a temperature below 120C., whereby azobenzene is converted into hydrazobenzene ; the latter is then converted into benzidine hydrochloride by treatment with hydrochloric acid, and any residual azobenzene is converted into benzidine hydrochloride by treatment with a metal capable of liberating hydrogen from the hydrochloric acid. In an example, nitrobenzene is treated with hydrogen in an autoclave at 145-150C. under a pressure of 100-200 lb. per sq. in. in the presence of a nickel-kieselguhr catalyst and aqueous caustic soda, further amounts of caustic soda solution being added during the reduction. When all the nitrobenzene is reduced (a test for ascertaining this is described) the autoclave is cooled to below 100C., more catalyst is added, and hydrogenation is continued at 75-85C. and a pressure of 150-200 lb. per sq. in. ; the product is treated at 0-10C. with aqueous hydrochloric acid, and then at 20-30C. with iron and hydrochloric acid, whereby a product containing aniline hydrochloride and benzidine hydrochloride is obtained, and is treated with salt to separate benzidine hydrochloride ; the latter is filtered and redissolved in water to separate it from unreacted iron, and the solution is then treated to recover benzidine or its hydrochloride or sulphate. In an alternative procedure, the hydrogenation product is filtered and freed from aniline by vacuum distillation, and the residual mixture of azobenzene and hydrazobenzene is converted into benzidine hydrochloride as described above. The caustic soda used in the example may be replaced by another alkaline substance such as caustic potash, trisodium phosphate, soda or sodium silicate, and in place of iron another metal capable of liberating hydrogen from hydrochloric acid, such as zinc, tin or aluminium, may be used.
Patent GB-684743-A (GB)
Title: Method of manufacturing sliding clasp fasteners
Inventor: SCHONFELDER HERBERT
IPC: C09B43/11
Filed: 1951-05-25
Abstract: 684,743. Sliding-clasp fasteners. PRYMVERCHLUSS GES. May 25, 1951, No. 12327/51. Class 44 The elements of a sliding-clasp fastener are formed from a strip in two stages. In the first stage the strip 1 is passed through a stamping device indenting the coupling projections 3 and cutting away parts 4 to form the outer profile of the elements but leaving them still connected by a web 7. In the form shown elements are formed on each side of the web and may be arranged symmetrically or staggered. The connected rows of elements are passed between notched wheels 10, the outsides of the elements jamming in the notches whereby they are located during the second stage in which the part 8 is removed in a punching device. The part 8 may be partly severed or indented in the first stage. The removal of the part 8 separates the elements and forms the tape gripping jaws. The rough comers of the elements may be removed and the exposed surfaces treated between the first and second stages. The separated elements are carried in the notches to the position where they are to be fixed to the tape. The tape is advanced into the gap between the jaws by a pair of comb members 16 engaging behind the bead 13. With the tape in position a tool 12 is forced against the ends of the jaws, the tool having rounded operating surfaces adapted to turn the jaws over around the bead. The wheels 10 are advanced in steps by a maltese-cross gear 18 driving through worm gears 17.
Patent GB-107866-A (GB)
Title: Improved Method of and Means for Drying China Clay.
Inventor: STOCKER THOMAS MEDLAND
IPC: F26B23/00
Filed: 1916-08-31
Abstract: 107,866. Stocker, T. M. Aug. 31, 1916. Drying furnaces and kilns.-China clay is dried on a floor H heated by the gases from one or more furnaces C passing through a series of flues D beneath it, the air for the furnaces, which may be taken in a moist condition from above the drying floor, being previously heated. As shown, the air for the furnaces is drawn with the moisture from the drying clay through the collector H and conveyed to the ash-pit through heating passages L beneath the flues D. Heated air also is supplied above the fire through passages 0 tortuously arranged in the roof. One or more fuel supply openings and hoppers may be arranged in the roof of the furnace.
Patent GB-586446-A (GB)
Title: Improvements in apparatus for cutting wire and like strand material into uniform lengths
IPC: B21F99/00
Filed: 1944-06-29
Abstract: 586,446. Cutting and severing machines. TOBE DEUTSCHMANN CORPORATION. June 29, 1944, No. 12377. Convention date, Sept. 30, 1943. [Class 31 (i)] [Also in Group XXII] In strand cutting apparatus, in which the strand is fed by intermittently rotated feed rolls to a reciprocating cutter driven from a reciprocating rod, the rod is positively actuated during both the cutting and the retracting movements by a bell-crank lever whose two arms are engaged alternately by a pin projecting from a rotating disc. A wire cutting machine comprises posts 10 and 11 mounted on a base plate 2 and between which is carried a lower shaft 13 driven from a motor M and an upper shaft 26 on which is fixed a feed roll 28, and a pinion 25 adapted to be rotated by a rack reciprocated by a crank from the shaft 13. The pinion is coupled to the feed roll 28 through a one-way clutch and the pin 18 of the crank is adjustable along the crank arm 16 by means of a screw operated by a knurled head 20 so that the feed of the roll 28 may be varied. Wire, 9 from a supply spool 8 passes through a tensioning loop 50 and through one of a number of different size guideways 34 according to the diameter of the wire. It then passes between the driven feed roll 28 and a freely mounted roll 29 which is carried on an eccentric so that the distance between the rolls may be adjusted to suit the diameter of the wire. The wire then passes through another guide 37 and through the aperture 41 of a reciprocating cutter 38 connected to an operating rod 42 which is pivotally secured at 43 to one arm 44 of a bell-crank lever. This lever is turned to operate the rod 42 first in one direction and then in the other by means of a pin 47 projecting from a disc 48 on the shaft 13, the pin engaging the arms 44 and 46 alternately. The cut-off pieces of wire pass along a trough T to a receptacle R.
Patent GB-1532737-A (GB)
Title: High-speed ink-mist printers
IPC: B41J2/215
Filed: 1977-03-24
Abstract: 1532737 Selective printing OKI ELECTRIC INDUSTRY CO Ltd 24 March 1977 [25 March 1976] 12382/77 Heading B6F In an ink-mist printer having two electrodes 16, 2 and an ion controlling device, e.g. aperture plate 6, the first electrode 16 is divided along its length into segments which can be selectively moved away from plate 6 to avoid dirtying of the plate 6 when small paper widths are used. Each segment of electrode 16 is supported on its own bar 13 which is held in an operative or inoperative position by a spring 23 and in the inoperative position the part of the bar 13 presented to the plate 6 is an insulating section 18. The segments of electrode 16 may also be selectively energized by switches (25) Fig. 7 (not shown).
Patent GB-473853-A (GB)
Title: Improvements relating to the supplying of powdered, granular or other like materialsfrom a hopper to a receptacle
IPC: B65G65/46
Filed: 1936-05-01
Abstract: 473,853. Hopper delivery; screwconveyers. SMITH, A. R. May 1, 1936, No. 12392. [Class 78 (i)] Means for transferring powdered, granular, or like materials from a hopper to a receptacle comprises a vertical funnel b having a closed lower end in the side of which is an opening d leading to a shoot e. Within the funnel is a rotating feed worm f which terminates in a radial blade h located opposite the opening d. The worm f may be tapered and may have a scoop i at its top. Specification 368,417 is referred to.
Patent GB-1307951-A (GB)
Title: Production of reticulated fibrous sheet materials
IPC: D04H13/00
Filed: 1971-04-30
Abstract: 1307951 Stretching foamed sheets; laminates TEIJIN Ltd 30 April 1971 [28 July 1970] 12512/71 Headings B5B and B5N [Also in Division C3] A molten thermoplastic polymer is extruded in admixture with a foaming agent through a die of 0À2-1À0 mm. width, the resulting foam sheet is quenched below the polymer glass transition temperature within 5 mm. of leaving the die, and the quenched sheet is drawn at a ratio between the maximum possible without breakage of the sheet and one third of this value, whereby a fibrous sheet is obtained having numerous cracks running in one direction. A plurality of such sheets may be superposed with their cracks parallel, subjected to tension transverse to the cracks to open them, e.g. to 3-15 times their width, and finally pressed at a temperature below the softening point of the lowest melting component, whereby a laminate is obtained. A vinyl acetate binder may be incorporated into the laminate. Other sheetmaterials may be included in the laminate. In examples, sheets of polystyrene, polycarbonate, nylon-6 or polyethylene-2,6-napthalate containing 1% talc are extruded using N 2  or CO 2  as foaming agent. In Ex. 6 two laminates, each of 240 polystyrene sheets, are superposed with a polycarbonate film between them, and the whole integrated by pressure at 80 C. In Ex. 7, a 240-sheet laminate as above is adhered to an asbestos sheet with vinyl acetate.
Patent GB-1501602-A (GB)
Title: Automobile battery carrier
IPC: H01M2/10
Filed: 1976-03-29
Abstract: 1501602 Battery carrier H STEPHENS 29 March 1976 12546/76 Heading A4G [Also in Division H 1] A battery carrier comprises a rigid handle 1 of dielectric material, e.g. plastics or glass fibre, supporting at two spaced points U-springs 4, each comprising a pair of legs 6 and outwardly directed lugs 7 at the ends of the legs. In use the legs 6 are pressed together to enable the lugs to enter the filling well 8 of a battery case 9 and then the legs are released so that the lugs 7 engage beneath the lower edge of the filling well 8. As described the U-springs are retained in slots 2 at the ends of the handle 1 by portions 5 tightly fitting over the handle ends. The lugs 7 are greater in length than the radius of the filling well 8, and the lower ends of the legs 6 are enamelled to prevent corrosion. The handle may be made telescopic to adjust the spacing of the U-springs.
Patent GB-977863-A (GB)
Title: Bare wire multiple for cross-bar switches with wire spring contacts
IPC: H01H67/26
Filed: 1963-03-29
Abstract: 977,863. Automatic exchange switches. STANDARD TELEPHONES & CABLES Ltd. March 29, 1963 [April 3, 1962], No. 12586/63. Heading H1L. In a cross-bar switch having wire spring contacts 2 and a bare-wire multiple, the rear ends 3 of the wire springs are located in grooves 7 in an insulating block 6, and the bare wires 4 of the multiple, which are attached to the ends of the wire springs at staggered points 5, are located in recesses 9 of a comb-like side edge 8 of the block 6, the block being kept in place by the wire springs and the multiple wires.
Patent GB-241602-A (GB)
Title: Improvements relating to the separation of solid particles from flue gases
IPC: B01D45/02
Filed: 1924-05-22
Abstract: 241,602. Partridge, H. E., Thompson, W. J., and Thompson (Wolverhampton), Ltd., J. May 22, 1924. D u s t collectors; chimneys and flues.- Apparatus for separating solid matters from flue gases comprises an expansion chamber into one end of which a pipe conveying the flue gas projects only a short distance so that oppositely flowing streams of gas are set up in contact with one another. The Figure shows the base of a chimney fitted with an inlet pipe c connected to a pipe d leading from a steam boiler installation &c. The inlet pipe delivers into a cylindrical chamber e in which some dust &c. is deposited; the gas flows upinto a short cylinder f closed at the top, by which it is reversed, depositing its finer particles in an outer chamber a and escaping to the stack. The dust in the chambers a, e may be deposited in a catch pit &c. h by withdrawing the damper i. In a modification, the cylinders c, e, f may be arranged horizontally in a horizontal flue, the chamber e being formed with a lateral outlet into a catch pit. Specifications 5768/08 and 8561/08 are referred to.
Patent GB-1273839-A (GB)
Title: Process for manufacturing cross-linked mouldings
Inventor: HINZ EBERHARD
IPC: C08J3/20
Filed: 1970-03-16
Abstract: 1,273,839. Injection moulding. VEREINIGTE DEUTSCHE METALLWERKE A.G. 16 March, 1970 [25 March, 1969], No. 12606/70. Heading B5A. In a process for manufacturing a cross-linked moulding of a thermoplastics, a mixture of a thermoplastics and a cross-linking agent is injected through one or more orifices having a diameter of 2 to 8 mm., under a pressure of 1800 to 3000 kgm. per sq. cm., within a time of 1 to 6 seconds, with a simultaneous temperature rise sufficient to melt the thermoplastics, into a mould which has been heated to a temperature above the decomposition temperature of the cross-linking agent and above the melting point of the plastics material, whereby the mixture is moulded and cross-linked in a single operation. The cross-linking agent may be an organic peroxide, hydroperoxide, peracids or peresters, and examples of these and of thermoplastics are given. The mixture may have a temperature of 20‹ to 110‹ C. prior to injection, the temperature rise being produced by friction in the injection orifices. Alternatively, the mixture may be heated, whilst being injected, by heating grids, a heated torpedo, high frequency energy or ultrasonic energy. The mould may be preheated to 180-300‹ C., and the moulding may be removed while still hot. The moulded article may be a T-junction pipe or a covering for electric cables.
Patent GB-564678-A (GB)
Title: Cigar and cigarette extinguisher
IPC: A24F19/14
Filed: 1943-08-05
Abstract: 564,678. Cigar and cigarette extinguishers. DUNHILL, A. Aug. 5, 1943, No. 12669. [Class 130] A case 2 adapted to contain water is closed by an apertured member 5 and a spherical float 8 projects into and closes the aperture in the member 5. Slight pressure of the lighted end of a cigar or cigarette on the float 8 causes water to rise into contact with and to extinguish the cigar &c. The member 5 is seated on an integral shoulder 4 in the case 2, which may be integral with an ash-tray or fitted in a recess or socket in an ash-tray. In a modification, the member 5 is funnel-shaped, with a rim having an undercut groove seated on the edge of the case 2.
Patent GB-514262-A (GB)
Title: An improved process of and composition for leak proofing gas distribution systems
IPC: F16L55/164
Filed: 1938-04-28
Abstract: 514,262. Joint-making packing. STANDARD OIL DEVELOPMENT CO. April 28, 1938, No., 12717. Convention date, Sept. 4, 1937. [Class 122 (iii)] [Also in Group III] A method of rejuvenating the packing in gas distribution systems comprises passing through the system an oil in water emulsion of an oil mixture comprising a mineral or hydrocarbon solvent having a Kauri Butanol value of at least 40, a wetting agent and an emulsifying agent. Suitable compositions are given.
Patent GB-120537-A (GB)
Title: Improvements in and relating to Screw Posts or Stakes for Barbed Wire and the like.
Inventor: LOMAS GEORGE ALBERT
IPC: E04H17/06
Filed: 1918-08-06
Abstract: 120,537. Lomas, G. A., Ward, W. J., and Brimelow, J. Aug. 6, 1918. Posts.-Screw posts of the form shown in Fig. 3, for supporting barbed wire, have their loops a given a definite spacing b, Fig. 2, and also a set at c and d to give them a central position. Apparatus for forming the loops comprises a rotating and sliding spindle f carrying a grooved roller j. The spindle f is moved forward on rotation by a roller-pin i engaging a hollow thread h in the block g. In operation, the bar is passed through an eye o, under a set-pin k, and between the spindle f and roller j; one loop having been made by a single revolution of the spindle by a handle, the set-pin m is pulled out and the front end of the bar passed thereunder and a second loop formed by a second similar looping-apparatus.
Patent GB-122620-A (GB)
Title: Improvements relating to Syringes.
Inventor: JEAN ETIENNE LARCHE
IPC: A61M5/315
Filed: 1918-08-06
Abstract: 122,620. LarchÚ, J. E. Jan. 19, 1918, [Convention date]. Void [Published under Sect. 91 of the Act]. Syringes and like appliances.- A medical syringe comprises a graduated injection t u b e 1, shaped at 2 to receive an hypodermic or similar needle, and a closely fitting piston fitted with a hollow tube throughout its length. The upper end of the piston is adapted to receive a rubber tube communicating with the liquid to be injected. When the injection tube is charged and the rubber tube closed by a pinch clip, the piston can be depressed to force the liquid through the needle. The Specification states that the apparatus can be used also to withdraw liquid from the body. A hole 8 is formed in the body of the piston to assist in the insertion of the hollow tube, and the piston and injector tube are connected by a chain to prevent the loss of either.
Patent GB-1263072-A (GB)
Title: Improvements in and relating to compositions for use as coating materials for glass fibres
IPC: C03C25/323
Filed: 1968-03-15
Abstract: 1,263,072. Glass cloth laminates. FIBREGLASS Ltd., M. E. HALL, and D. P. PIMBLETT. 11 March, 1969 [15 March, 1968], No. 12809/68. Heading B5N. [Also in Divisions C1 and D1] Glass cloth sheets which have been treated with coating materials comprising trialkoxy siloxy-terminated unsaturated polyester resins, are laminated with a proprietary unsaturated polyester resin (" Crystic " 196-Trade Mark), twelve of the dried treated glass cloth sheets being used. The modified polyesters are derived from ethylene or propylene glycol with maleic and/or fumaric acid, optionally together with phthalic acid and/or adipic acid and/or succinic acid.
Patent GB-128906-A (GB)
Title: Improvements relating to Rock-drilling Machines.
Inventor: BOEHN INGEBRET
IPC: E21D9/10
Filed: 1919-05-22
Abstract: 128,906. B÷hn, I. June 22, 1918, [Concention date]. Tunnelling by boring.-A tunnelling - machine com - prises a central shaft 9 rotated directly or indirectly by a motor 16 and carrying a crank 6 which, through rods 5, oscillates bell-cranks or T-levers 4 and thereby reciprocates drills 1 which are connected to brackets 3 by links 2. A sleeve 13 protects the mechanism from falling rocks &c. The brackets 3, levers 4, &c. are carried by a disk 12 which is slowly rotated by the motor through gearing 14, 15. The machine is advanced by driving the carrying wheels from the motor or by means of a screw supported on a cross beam in the tunnel. In a modification, the central shaft 9 drives a transverse shaft through bevel gearing, the latter shaft being provided with cranks to reciprocate the drills. Specification 115,647 is referred to.
Patent GB-689435-A (GB)
Title: Improvements in preliminary pumps for fuel injection pumps
IPC: F02M59/00
Filed: 1951-05-31
Abstract: 689,435. Reciprocating pumps. PISCHINGER, A. May 31, 1951 [May 31, 1950], No. 12938/51. Class 102 (i). A reciprocating pump for feeding fuel to a fuel-injection pump has a spring-loaded valve 9 operated by the delivery pressure produced in the pump cylinder 4 and controlling both the suction and delivery conduits and also acting as a relief valve in the event of excess pressure in the pump chamber. The pump plunger 1 is double acting and is actuated in one direction by a cam or crank through a push rod 3 and in the other direction by a spring 2. Alternatively the plunger may be actuated in both directions by a crank. The piston valve 9 operates in a ported sleeve 8 and is loaded by opposed springs 11, 12. The delivery pressure acting on a partition 24 moves the valve to place the delivery side of the plunger in communication with the delivery conduit 17 and the suction side with either of the suction conduits 15, 16. Excess pressure causes the valve to be moved sufficiently for its end to uncover one of the suction conduits. The valve also acts as an accumulator piston.
Patent GB-1341605-A (GB)
Title: Surgical drape or gown
IPC: A61B19/08
Filed: 1971-05-04
Abstract: 1341605 Surgical drapes JOHNSON & JOHNSON 4 May 1971 [24 June 1970] 12956/71 Heading A5R [Also in Division B5] A surgical drape having a moisture vapour transmission rate of at least 15 g water/sq.m./ 24 hours measured according to ASTM test E 96-66 (B) comprises a sterilisable, flexible, waterproof water insoluble, non-toxic, non- microporous film or sheet and a sterilisable, non-toxic, flexible absorbent covering layer superposed on at least one face of the sheet or film. The sheet or film may be of cellulose acetate, cellulose triacetate, cellulose acetate, butyrate, collagen, gelatin, polyurethane, polyvinyl chloride, ethylene/vinyl acetate copolymers, polyamide, cellulose propional regenerated cellulose or ethyl cellulose. The covering layer may be secured by uniform or random bonding, e.g. by stitching heat sealing or adhesive, and is suitably a woven or non-woven tissue or foam fabric. The drape may be provided with a hydrophobic coating in the form of lines or patterns which act as channels for dispersal of body fluids. The drape may have a centrally located aperture.
Patent GB-679249-A (GB)
Title: Improvements relating to collapsible gates, shutters and the like
IPC: E06B3/48
Filed: 1951-06-01
Abstract: 679,249. Gates. POTTER RAX, Ltd., and COLEMAN, F. G. June 1, 1951, No. 13031/51. Class 45 [Also in Group X] Relates to collapsable gates having shutter plates 1 rotatably secured together at their adjacent longitudinal edges so that the shutter plates may be extended to a closed position and collapsed to an open position by folding the shutter plates together alternately back to back and face to face accordion-wise, the adjacent longitudinal edge portions of the shutter plates being rotatably housed in channels of longitudinally extending connecting members 2, alternate connecting members being secured to pickets. According to the invention the alternate connecting members are secured to the pickets by clip members 7 which embrace the pickets and are secured against lateral withdrawal the bases of the connecting members engaging the front face of the clip members and being secured thereto by a welding or similar fastening operation. The ends 12 of the clip are bent round the picket and welded together to prevent lateral withdrawal. The longitudinal edges of the shutter plates may be made as described in Specification 679,250.