baber/WOPTO huggingface dataset:
Patent GB-244543-A (GB)
Title: Improvements in or relating to stencil sheets
IPC: F02N99/00
Filed: 1924-09-30
Abstract: A cellulose ether is made by a process similar to that adapted in the case of a starch ether and according to which starch dissolved in caustic soda solution is treated at 40-60 DEG  C. with an alkyl sulphate, or with an alkyl, aryl or aralkyl halide, and subsequently solid caustic soda and a further quantity of alkyl sulphate are added, and the mixture heated to 85-95 DEG  C.  The cellulose ether, after recovery and washing, is dissolved in ethyl acetate, and to the solution is added a mixture of chlorinated naphthalene, japan wax, and castor oil.  Reference has been directed by the Comptroller to Specification 216,648, [Class 95, Paints &c.].ALSO:A starch ether for use in connection with stencil sheets is prepared as follows: cornstarch is dissolved in caustic soda solution, the solution is warmed and diethyl sulphate added; the mixture is heated to cause a preliminary reaction, caustic soda in solid form is dissolved therein and diethyl sulphate stirred into the mass which is heated further, the starch being converted into an ether which separates out and is removed, washed with water and with dilute sulphuric acid, and is finally dried.  In place of an alkyl sulphate, an alkyl, aryl or aralkyl halogen derivative may be used in the above process. Reference has been directed by the Comptroller to Specification 216,648, [Class 100 (ii), Printing processes &c.].
Patent GB-818640-A (GB)
Title: Improvements in and relating to methods of metallising ceramic materials
IPC: H01B1/00
Filed: 1956-07-26
Abstract: Previously baked ceramics are metallized by applying a layer of a powdered mixture of a refractory metal (M. Pt. at least 2500 DEG C) or its oxide with Cr, and heating in a furnace in a reducing atmosphere.  The refractory metal may be Mo, and the mixture consist of 20 to 50 per cent by weight Cr, with 80 to 50 per cent by weight of Mo or its oxide, the mixture being applied, e.g. by brushing or spraying, as a suspension in an inert liquid, e.g. amylacetate, ethyl oxalate.  The temperature should be lower than the baking temperature of the ceramic but high enough to sinter the mixture to its surface. As an example, an alumina base ceramic baked at about 1400 DEG C is coated with amylacetate containing a suspension of 70 per cent, powdered Mo or its oxide and 30 per cent powdered Cr, and heated for half an hour in hydrogen at 1100 DEG  to 1150 DEG C.  The coated ceramics are said to be particularly useful as electrodes in electrical and radioelectrical apparatus.  They may also be given an electrolytic layer of Ni or Cu to serve as a brazing surface.
Patent GB-1088681-A (GB)
Title: Composite porous material and process of making the same
IPC: B41C3/04
Filed: 1965-06-01
Abstract: A porous rubber material composed of two integral portions, each portion having a different porosity, is produced by preparing one portion from an unvulcanized raw rubber, chemicals to vulcanize the rubber, a foaming agent which decomposes at 150 DEG  to 160 DEG  C. to form discrete fine bubbles and a powdered water-soluble salt not decomposed at the vulcanizing temperaure and a second portion from raw rubber and vulcanizing agents, and three foaming agents decomposing at 60 DEG  to 90 DEG  C., 100 DEG  to 110 DEG  C. and 130 DEG  to 160 DEG  C. respectively and a leachable salt as above, putting the two portions succesively into a moulding die, and then gradually heating the die, so that the two portions are foamed to different porosities and fuse together, removing the cooled body from the die and washing with water.  The three foaming agents are suitably sodium bicarbonate, p-toluene sulphonyl hydrazide and p,p1-oxy-bis-benzene sulphonyl hydrazide respectively, and the latter may also be used as the foaming agent in the first portion.  The preferred water-soluble salts are sodium chloride and sulphate.  The composite material may be used as a rubber stamp (see Division B6).
Patent GB-895541-A (GB)
Title: Method and apparatus for the measurement of crack propagation in test panels and the like
IPC: G01N27/20
Filed: 1960-07-04
Abstract: 895,541. Electric selective signalling systems. CANADAIR Ltd. July 4, 1960 [July 16, 1959], No. 23271/60. Class 40 (1). In a device for measuring crack propagation in a test specimen a plurality of resistance wires 10, Fig. 1, are connected across two conductors 8, 9 mounted on a base 6 such as paper, and the device is stuck to the specimen under test so that as a crack develops the wires 10 are successively fractured. In the preferred embodiment both the conductors 8, 9 and the wires 10 are deposited by silk screen printing, and if necessary they may be deposited directly upon the test specimen.
Patent GB-679149-A (GB)
Title: Improvements in or relating to electrical storage batteries
Inventor: CHAPMAN EDWARD SPENCE
IPC: H01M50/50
Filed: 1950-09-25
Abstract: 679,149. Batteries. PRITCHETT & GOLD, and E.P.S. CO., Ltd. June 29, 1951 [Sept. 25, 1950], No. 23412/50. Addition to 662,604. Class 53. The bar which connects two adjacent cells in the parent Specification is replaced by two socket portions e connected to the plates of the cells. A conducting pin a engages the two sockets as shown in Fig. 2. A layer of cement may be applied at i to the joint between the faces of the insulating material f to prevent access of acid and moisture. End cells may be connected by a jumper d, the ends of which enter the sockets e of adjacent cells as shown in Fig. 3.
Patent GB-169591-A (GB)
Title: A strainer for liquids especially suitable for use with beer engines
IPC: C12C7/24
Filed: 1920-08-10
Abstract: 169,591. Masters, A. R., and Choppin, M. H. Aug. 10, 1920. Strainers fitted at end of pipes. - A strainer for the suction pipes of beer and like pumps comprises metal discs 2, 3, and a wire gauze 1 supported by a helical wire 4 or other openwork frame; the lower disc 3 has a recess 6 to receive the lower end of an inner tube 5, which is vertically adjustable in the recess 6 and has apertures 7 for the admission of the strained liquid. A gauze cylinder 8 fits inside the tube 5 and covers the apertures 7. Adjustment of the tube 5 in the recess 6 determines the depth of sediment &c. left in the receptacle from which the liquid is drawn.
Patent GB-406047-A (GB)
Title: Improvements in or relating to control levers
IPC: B64C25/44
Filed: 1932-08-22
Abstract: 406,047. Locking levers. INDIA RUBBER, GUTTA PERCHA, & TELEGRAPH WORKS CO., Ltd., Aldwych House, Aldwych, and TARRIS, F. J., Silvertown, both in London. Aug. 22, 1932, No. 23448. [Class 80 (iii).] A hollow control lever 10 has a retaining pawl 16 maintained in or out of engagement with a fixed rack 14 without the operator having to maintain hand or foot engagement with the lever, by means of a rod 18 carrying a spring- pressed plug 23 which engages an inverted cone-shaped member 17 on the pawl shaft so as to move the member 17 and hence the pawl into one of two extreme positions. The pawl 16 is maintained in its retaining or non-retaining condition notwithstanding further movement of the lever. In fact, the teeth of the rack may be so designed as to allow the pawl which yields against the spring 24 to slip over them in one direction. The rod 18 is pivoted in the lever at 21 and is operated by a button 20. The rack may move with the lever and the pawl may be fixed or pivoted to a fixed pivot. In the latter case, the rack is retained in or out of engagement with the pawl and according to the provisional specification, when the rack is pivoted on the lever, a suitable cam is interposed between the plug 23 and the rack. Further according to the Provisional Specification, the pawl may have a tail portion having two depressions one or other of which is engaged by the plug 23.
Patent GB-144530-A (GB)
Title: Improvements in shackles and the like
IPC: B61G7/14
Filed: 1919-09-24
Abstract: 144,530. Knoyle, T. Sept. 24, 1919. Couplings, non-automatic.-In D-shackles for coupling colliery trams, &c., wherein a rib b on the pin a must be passed through a keyway f in the upper limb c of the shackle when inserting the pin, the rib enabling the link or plate to which the shackle is coupled to rotate the pin and thereby to lock it in position, a stop j is provided on the shackle to engage a corresponding stop i on the pin to position the pin for ready withdrawal. The limb of the shackle is reinforced by a web k.
Patent GB-664218-A (GB)
Title: Improvements in and relating to screw fasteners
IPC: F16B37/12
Filed: 1949-09-12
Abstract: 664,218. Bolted joints. UNITED-CARR FASTENER CORPORATION. Sept. 12, 1949 [Sept. 17, 1948], No. 23544/49. Class 83 (iv). [Also in Group XXV] In a bolted joint for securing a tube to a transverse end-plate a number of conical sheet - metal nuts 9 are employed, preferably three spaced five pitches apart. The resilience of the nuts is increased by radial slots 14 and the curvature is such that the corners 19 of the segments 18 grip the tube and dig in under clamping pressure exerted by the screw.
Patent GB-656521-A (GB)
Title: Improvements in or relating to electron velocity modulation devices
IPC: H01J25/02
Filed: 1947-08-26
Abstract: 656,521. Velocity-modulated tubes. STANDARD TELEPHONES & CABLES, Ltd. Aug. 26, 1947, No. 23554. Convention date, May 4, 1946. [Class 39 (i)] A velocity-modulated tube comprises a hollow conducting body 4 provided with a pair of inwardly-projecting flanges 3, 7 which together with a pair of metal discs 8, 8<SP>1</SP> capacitatively coupled to the flanges, divide the body 4 into two separated cavity resonators. The discs 8, 81 are unitary with the drift tube 11 that may be brought to a constant potential different from that of the body 4. Each flange 3, 7 overlaps the corresponding disc 8, 81 by a quarter-wavelength, so as to ensure close coupling between the discs and the flanges and to prevent the leakage of electromagnetic field from one cavity resonator to the other.
Patent GB-1183386-A (GB)
Title: Tungsten-Indium Powder Bodies Infiltrated with Copper
IPC: H01H1/02
Filed: 1967-05-26
Abstract: 1,183,386. Tungsten-indium infiltrated with copper. MALLORY METALLURGICAL PRODUCTS Ltd. May 26, 1967 [May 26, 1966], No.23579/67. Heading C7D. A W-In-Cu composite suitable for use as an electrical contact in a vacuum switching device is made by vacuum infiltrating, with Cu, either a green or presintered W-In compact containing 0À5-5% In. The W and In powder, 1-10 microns size is mixed and compacted at 20-35 t.s.i. and optionally presintered at 1250C. in hydrogen. Vacuum infiltration with Cu is effected at 1250- 1450C. at 10<SP>-5</SP> torr. In an alternative embodiment the W powder particles may be coated with the In either by electro-plating or vapour phase plating.
Patent GB-985565-A (GB)
Title: Improvements in or relating to ball-and -socket joints
IPC: F16C11/08
Filed: 1961-06-29
Abstract: 985,565. Ball joints. V. LANGEN, [trading as A. EHREINREICH & CIE]. June 29, 1961 [July 6, 1960], No. 23629/61. Heading E2F. A ball joint comprises a housing 1 having an access opening 8 for the internal machining of the housing and a deflection opening 7 for receiving the shank 5 of the ball pivot, the axes of the openings being inclined to one another and the openings being formed so that during the assembly of the joint the pivot can be inserted shank-first into the access opening and then rotated to pass the shank out of the deflection opening. The housing contains a bearing shell 2 which may be of resiliently flexible material and may have a slit extension beyond the equator of the ball 4 pressed into contact with the ball by a wedge ring 10 loaded by cup springs 11. An annular insert 9 (Fig. 1, not shown) may be placed in the deflection opening to bear from inside the housing on a suitable housing shoulder. Specification 971,081 is referred to.
Patent GB-881950-A (GB)
Title: Improvements in or relating to cylindrical electrical condensers
IPC: H01G9/10
Filed: 1957-07-26
Abstract: 881,950. Capacitor casings. TELEGRAPH CONDENSER CO. Ltd., and SPORING, P. A. April 9, 1958 [July 26, 1957], No. 23708/57. Class 37. A cylindrical capacitor 1 is encased by placing it within a tube 2 of thermoplastic material, which softens and contracts on heating; closing the ends of the tube by metal pieces 3; and applying heat to the tube ends which thereby contract and hold the metal pieces in position to form a fluid-tight casing. The tube 2 may be of polyvinyl chloride, polyethylene, polystyrene or cellulose tri-acetate. A metal cup 3 is inserted in each end of the tube; is riveted to an electrode foil 4; and is soldered to a connecting wire 5. The tube ends are heated by an eddy current induction heater which induces currents in each metal cup. The method is applicable to both electrolytic and paper dielectric capacitors.
Patent GB-217875-A (GB)
Title: Apparatus for dyeing loose textile fibres, yarns, fabrics and the like
IPC: D06B5/00
Filed: 1923-09-22
Abstract: 217,875. Schlumpf, J. June 19, 1923, [Convention date]. Casings; leakage-preventing devices. - The rotor 13 for the centrifugal pump used for circulating the liquid in a dyeing-apparatus is set in :a ring 16 mounted in the vat and in such a manner that the circulating chamber 19 of the pump is formed in the walls of the vat. The ring 16 is provided with a guide blade or deflector 18, and to seal the rotor the ring is provided in the suction side with a projecting flange 21 which engages a corresponding part on the rotor.
Patent GB-805498-A (GB)
Title: Electronic tachometers
Inventor: REEVES FREDERICK ERNEST
IPC: G01P3/48
Filed: 1955-08-18
Abstract: 805,498. Electrical tachometers. REVO ELECTRIC CO. Ltd. Oct. 31, 1956 [Aug. 18, 1955], No. 23795/55. Class 40 (1). In an electrical tachometer used, e.g. to measure the speed of rotation of a fan, a photocell p, when subjected to intermittent light controlled by the rotating body, generates impulses which when amplified at a and modified at m, cause a thyratron t to fire, discharging a capacitor C3 in parallel with the thyratron, the frequency of discharge of the capacitor C3 determining the current passing through a milliammeter i in the capacitor charging circuit which is therefore proportional to the speed of rotation. Two or more separate switch controlled capacitors may replace C3 to vary the speed range of the instrument.
Patent GB-266240-A (GB)
Title: Improvements in frames for embroidery, fancy needlework or the like
IPC: D05C1/02
Filed: 1926-09-27
Abstract: 266,240. Gl³cksmann, E. Sept. 27, 1926. Clips, lever.- Fabric gripping teeth 30 of a lever clip press on a felt pad 27.
Patent GB-1189003-A (GB)
Title: Improved Process Cheese
IPC: A23C19/082
Filed: 1967-05-23
Abstract: 1,189,003. Process cheese products. STAUFFER CHEMICAL CO. 23 May, 1967 [31 May, 1966], No. 23859/67. Heading A2B. In the preparation of process cheese products containing an emulsifiable amount of an alkali metal phosphate or an alkali metal or alkaline earth metal citrate or tartrate, or mixtures thereof, which cheese has a consistency suitable for extruding in a substantially uniform size and weight, wherein on or more types of cheese, including rework cheeses, are comminuted and mixed with the aid of heat and water, there is blended with the cheese a surfaceactive agent selected from: (a) a phosphorylated substituted or unsubstituted sorbitan fatty acid monoester or an alkali metal salt thereof, wherein the fatty acid contains from 12 to 18 carbon atoms; or (b) a phosphorylated substituted or unsubstituted polyoxyethylene sorbitan fatty acid ester or an alkali metal salt thereof wherein the average monomer chain length is from 4 to 50 and the fatty acid contains from 12 to 18 carbon atoms; or (c) a polyoxyethylene fatty acid ester werein the average monomer chain length is from 4 to 50 and the fatty acid contains from 12 to 18 carbon atoms; or (d) an alkyl or alkoxy substituted phosphate wherein the substituent contains from 12 to 18 carbon atoms; or (e) a substituted or unsubstituted monoglyceride wherein the fatty acid contains from 12 to 18 carbon atoms and the substituent is either an acetylated tartaryl or phosphoryl group; or (f) Lecithin; or (g) Lactylic stearate; or (h) mixture of two or more of the above.
Patent GB-1310620-A (GB)
Title: Process for preventing agglomeration of fertilizers
IPC: C05G3/00
Filed: 1970-05-18
Abstract: 1310620 Preventing caking of urea KAO SOAP CO Ltd 18 May 1970 [20 Jan 1970] 23861/70 Heading C2C [Also in Division C1] Caking of fertilizers, e.g. urea, is prevented by applying to said fertilizer an aqueous solution of an anticaking agent, and drying said fertilizer to remove substantially all water present. Said anticaking agent comprises a water-insoluble polymer of polymerization degree at least 10 and selected from polyvinyl acetate, acetals formed by reaction of C 1 -C 4  aldehydes with polyvinyl alcohol, partial hydrolysates of polyvinyl acetate, partial acetylates of polyvinyl alcohol, esters of polyacrylic acid with a C 1 -C 4  aliphatic alcohol and copolymers of vinyl acetates or acrylic acid esters with other copolymerizable monomers dissolved in a 10-30 wt. per cent aqueous solution of a solubilizing agent selected from alkyl-sulphates, α-olefin sulphates and alkyl sulphonates each containing 6-10 carbon atoms and alkylbenzene-sulphonates having alkyl radicals containing 4 to 8 carbon atoms.
Patent GB-1209694-A (GB)
Title: Improvements relating to fallers for textile machines
Inventor: MACKIE JOHN KAY PRINGLE
IPC: D01H5/14
Filed: 1968-05-20
Abstract: 1,209,694. Faller bars. JAMES MACKIE & SONS Ltd. 2 May, 1969 [20 May, 1968], No. 23940/68. Heading D1N. A synthetic plastics insert for holding pins 4 within a faller bar is formed with a row of parallel holes for the pins and with a laterally extending flange 6 at each side of the surface having the holes. The insert can be fitted with pins and glued within the faller bar. The insert may have a depth less than that of the slot in the faller bar. This sides of the insert may be ribbed or have irregularities.
Patent GB-1521878-A (GB)
Title: Compressed-air operated hydraulic pump
IPC: F04B9/133
Filed: 1977-06-08
Abstract: 1521878 Reciprocating pumps; compressedair-motors SCHMIDT KRANZ & CO GmbH 8 June 1977 [16 June 1976] 23980/77 Headings F1A and F1M A compressed air-actuated, hydraulic pump comprises a pumping piston 10 reciprocated by an air motor piston 3 controlled by a main valve 46 having a smaller face 47 continuously subjected to air-pressure in air supply connection 45 and a larger face 65 alternately connected to pressure and exhaust by an auxiliary valve 69 controlled through a rod 42 by motor piston 3. In the singleacting embodiment shown, the piston assembly has a guide spigot 7 which also controls the exhaust passage 73 from the larger face 65 of the control valve. In a twin-cylinder embodiment Figs. 3 and 4 (not shown), auxiliary valves at both ends of the motor cylinder control the control valve. The pump valve housing 22 is retained on cylinder spigot 14 by conical members 23 secured by collars 30.
Patent GB-850809-A (GB)
Title: Improvements in or relating to dynamo-electric machines incorporating brakes
IPC: H02K7/102
Filed: 1957-07-29
Abstract: 850,809. Electromagnetic brakes. CLEVELAND ELECTRIC MOTOR CO. July 29, 1957 [Aug. 17, 1957], No. 24013/57. Class 103 (1). [Also in Group XXXV] In a dynamo-electric machine having a stator 9 surrounding a rotor 8 on a shaft 7 rotatably mounted within a supporting structure 1, 2, 5, 51, a plunger 12 mounted on the shaft for movement into and out of a position in which the plunger adjoins the rotor, and stationary and movable brake. friction surfaces on the structure and plunger respectively, a permanent magnet assembly 21, 23 is incorporated in the plunger itself to urge the plunger towards the stationary braking surface. As shown applied to a squirrel cage type motor, the plunger preferably of cast iron is caused to rotate with the rotor 8 by rotor pins 18 on which plunger bores 19 are slidable and its frusto-conical end surface 12b engages when the motor is at rest a complementary brake lining 15 comprising four trapezoidal segments disposed in mutually reversed relation and cemented by an epoxy resin adhesive to a flange 4 of a housing extension 2. When the motor is energised its stator flux disengages the brake plunger to the position shown, but when it is de-energised a compression spring 14 effects initial movement to the left, whereupon the magnet 21 becomes effective with respect to a pole piece 26 and quickly engages the braking surfaces. Magnet 21 is either annular or comprises a plurality of equi-spaced permanent magnets and the plunger 12 itself also may be magnetised, the magnetisation of both being effected after the annulus 21 is cemented into the plunger 12 by a jacket 23 preferably of a cured epoxide resin. The position of the pole piece 26 is adjustable by screws 31 and others not shown. Specification 850,810 is referred to.
Patent GB-1118945-A (GB)
Title: Well apparatus
IPC: E21B33/043
Filed: 1966-05-27
Abstract: 1,118,945. Boring earth &c. FMC CORP. 27 May, 1966 [16 June, 1965], No. 24051/66. Heading E1F. A pipe-hanger for supporting a pipe 130 in the outer casing (not shown) of a well, comprises a mandrel 14 secured to the pipe and having a cage 44 slidable thereon, the cage containing dogs 75 each latched in an inner position by a rod 115 and urged to an outer position by springs 88, 90 after removal of the rod. Each rod is secured to a block 95 attached by a shear pin 104 to the larger diameter end 16 of the mandrel, a spring-band 106 embracing all the blocks. In use, pipe 130 and mandrel 14 are lowered by running string 136 into the outer . casing until the bottoms 99 of the blocks engage a shoulder (not shown). Further movement shears pins 104 and causes end 116 to slide past the blocks until band 106 contracts them against the smaller diameter surface of adapter 32. At this point, pins 115 have been raised sufficiently to release the dogs, and the pipe is lowered until the dogs move outwardly into an enlarged annular recess in a part of the outer casing, and mandrel 14 continues moving until splines 25 have locked the dogs in their outer positions and lower surface 20 of end 16 abuts upper surface 50 of cage 44.
Patent GB-287791-A (GB)
Title: A mechanical device whereby the check rails of railway and tramway tracks and the like may be lubricated by automatical means
IPC: B61K3/00
Filed: 1927-09-13
Abstract: 287,791. Webb, J. N. Sept. 13, 1927. Force-feed lubricators. - Lubricant is forced through a nozzle h on to the check rail g of a railway, tramway, or like track by a worm c mounted in a chamber e fed in gravity from a reservoir f, the worm being caused to rotate by the action of the wheels a of passing vehicles on a treadle b operating the worm through pawl- and-ratchet mechanism d. In a modification the reservoir f is replaced by a chamber containing a piston which is moved forward to supply the worm chamber by a screwed extension of the worm shaft, the piston being provided with an indicator. The treadle may operate the ratchet mechanism through mechanisms, electrical, pneumatic or hydraulic means.