baber/WOPTO huggingface dataset:
Patent GB-506990-A (GB)
Title: Weft inserting device for weaving looms having a continuous weft supply
IPC: D03D47/00
Filed: 1938-09-29
Abstract: 506,990. Looms with stationary weft supply; weft stop-motions. DEWAS, R. Sept. 29, 1938, No. 28332. Convention date, Oct. 30, 1937. [Classes 142 (i) and 142 (ii)] The several weft threads (only two a, b are shown) pass through guiding eyes 14, 15 arranged above the plane of the cloth, outside the selvedge, and at about two thirds of the travel of the slay on its rearward stroke. These eyes are carried by levers 7. operated by springs 10 and cams 9 on a shaft 12 driven by a chain and wheel 13 from the loom crank-shaft. The levers 7 are of various lengths &c. to prevent entanglement of the threads. The slay carries a hook 16 which may be fixed or, as shown, reciprocated vertically by a cam on the slay pivot. At the beat up the eye 14, 15 with the selected thread has been lowered to position 14<1> or 15<1> and this thread is caught by the hook 16 which brings it into correct position to be engaged by the weft inserter. The hook 16 frees the weft thread just before the next. beat-up and will engage the next chosen thread directly after the beat-up. The hook may serve as the grid of a weft stop motion. Specifications 403;292; 410,018, 442,206, and 456,216 are referred to.
Patent GB-1087867-A (GB)
Title: Laminated sheet
Inventor: BAGULEY MAURICE EDWARD
IPC: C08G18/10
Filed: 1963-07-18
Abstract: A gas permeable laminated sheet comprises a coherent fibrous layer and an adherent microporous layer of a block copolymer having segments of a polyamide and a polymeric substance having a melting point of less than 80 DEG C.  The microporous layer may permeate the fibrous layer.  The segments of the polymeric substance may be derived from the group consisting of polyetetramethylene oxide, polyethylene oxide and polybutadiene. The microporous layer may comprise a mixture of the block copolymer and an elastomer which is immiscible with the copolymer in the solid state.  The block copolymer may have grafted side chains of an elastomer.  The laminated sheet may be produced by applying a solution of the block copolymer to the coherent fibrous layer, precipitating the copolymer from the solution to form a gel containing residual solvent and reducing the solvent content of the gel at a temperature below the glass temperature of the gel, whereby the copolymer tends to aggregate in interconnected micelles, generating pores in the gel. Alternatively, the copolymer may be precipitated from the solution to form a gel containing residual solvent and the gel subsequently applied to the coherent fibrous layer, e.g. by transfer from another surface, and then the solvent content of the gel reduced as before. The gel may be precipitated by cooling the solution of the block copolymer.  The copolymer may be dissolved in the continuous phase of an emulsion of an elastomer immiscible with the copolymer in the solid state, whereby the gel precipitated from the solution entrains particles of the elastomer.  The fibres of the coherent fibrous layer may be lubricated, e.g. with a silicone, prior to the application of the microporous layer.  The fibrous layer may be a porous, bonded, non-woven felt of crimped nylon fibres.  The solution may be applied by knife spreading.
Patent GB-616932-A (GB)
Title: Improvements in tuned circuits and inductances therefor
IPC: H03J7/14
Filed: 1946-09-23
Abstract: 616,932. Inductances. PHILIPS LAMPS, Ltd. Sept. 23, 1946, No. 28438. Convention date, April 16, 1943. [Class 38 (ii)] [Also in Group XL (c)] An inductance by which is varied the natural frequency of an oscillatory circuit, for example in a radio receiver, or for frequency modulation of a carrier wave, has a ferrite core, the permeability of which is varied by magnetizing current in an auxiliary winding. The inductance L, with ferrite core K and auxiliary winding carrying premagnetizing current i, may be connected in parallel with, may constitute, or may be in series with an inductance L which with a condenser C forms the oscillatory circuit as shown in Figs. 1, 3 (not shown) and 5 (not shown) respectively. The first two arrangements have a linear frequency/premagnetization current characteristic. The windings may be in two series connected parts on two separate cores so arranged that the current in one winding is not reflected into the other, Fig. 5 (not shown). The ferrite path may be closed, Fig. 1, or open, Fig. 3 (not shown). Specification 626,946 is referred to.
Patent GB-227798-A (GB)
Title: Improvements in or relating to jars for use in well drilling operations
IPC: E21B31/107
Filed: 1924-11-27
Abstract: 227,798. Kammerdiner, J. A. Jan. 19, 1924, [Convention date]. Bore-hole apparatus.-A fishing jar for use in well &c. drilling operations comprises a hollow body 5 receiving a member 11, the parts 5, 11 having mutilated threads 14, 18 whereby the parts may be locked together; the jar is then placed in tension and the parts 5, 11 rotated one relatively to the other to disengage the threads, impact then occurring between hammer and anvil portions 16, 12. Fillets 15 at one end of the threads limit relative rotation of the parts and permit transmission of a rotary drive. The member 11 carries a tube 20 sliding through a stuffing-box 9 in the body 5 to provide for water circulation.
Patent GB-697026-A (GB)
Title: Improvements in or relating to weft-straightening machines
IPC: D06H3/12
Filed: 1950-11-22
Abstract: 697,026. Feeding webs. DURRANT & SONS, Ltd., G. and DURRANT. C. L. Dec. 14, 1951 [Nov. 22, 1950], No. 28493/50. Class 100(i) Straightening weft.-In a weft-straightening machine of the kind in which the fabric passes over pairs of rollers 7, the angularity of the pairs being mutually adjustable by rotation of an oscillatable shaft 10, e.g. as described in Specification 416,949, oscillation of the shaft 10 is effected by an electric motor 26, the mechanical connection between motor and shaft having a limited travel and incorporating a slipping clutch. The shaft 10 is fixed to a lever 18 which slidably engages a trunnion 17 fixed on a toothed quadrant 16 pivoted at 15 on a sub-frame 13 built out from the machine. The segment 16 meshes with a worm gear 19 on a shaft 21 carrying a pulley 22. The pulley 22 is connected by a U-belt 23 with a pulley 24 on the spindle 25 of the motor 26. The motor is mounted on a platform 27 adjustable along machine tie-rods 12. The pulley 22 is rotatably mounted on the shaft 21, driving connection being established by slipping-clutch discs 32 and spring 33. Limit stops 31 are provided for the quadrant 16. The motor is connected to a supply point through a reversing contactor 28 and a pushbutton controller 29 is provided which may be mounted on or adjacent the motor 26 or in a remote position.
Patent GB-781135-A (GB)
Title: Telephone instrument utilizing transistor amplifier
IPC: H04M1/60
Filed: 1955-10-06
Abstract: 781,135. Substation circuits. AUTOMATIC ELECTRIC LABORATORIES, Inc. Oct. 6, 1955 [Oct. 6, 1954], No. 28543/55. Class 40 (4). [Also in Group XL (c)] In a central battery system, the receiver circuit at a substation includes a transistor amplifier 128, Fig. 1, or 791, Fig. 7, to which bias potentials are supplied from the central battery through resistors at the substation. The polarities of these potentials are maintained by a rectifier bridge 141-144 or 741-744 in case of battery reversal at the exchange. Volume control is effected by varying the amount of negative feedback by means of a potentiometer 127 or a variable resistance 758. The transmitter circuit may include a two-stage transistor amplifier 763, 770, Fig. 7. The invention may be applied also to an operator's headset, Fig. 8, the transistor amplifier 818 and associated equipment being mounted on the plug assembly 800 which co-operates with the jack 910, Fig. 9. All the circuits shown are of the anti-side-tone type. Specification 530,257 is referred to.
Patent GB-1237192-A (GB)
Title: Information-recording processes and materials
Inventor: VRANCKEN MARCEL NICHOLAS
IPC: B41C1/10
Filed: 1967-06-21
Abstract: 1,237,192. Light- and heat-sensitive materials and processes. GEVAERT-AGFA N. V. June 19, 1968 [June 21, 1967], No. 28693/67. Addition to 1,139, 896. Heading G2C. A process for preparing printing masters according to claim 24 of parent Specification using a material in which the water-permeable layer is not covered by another layer and in which the silver halide emulsion is an internal silver halide emulsion which after imagewise exposure the unexposed silver halide is developed with a surface developer to form a reversal image of a density at least 0À1 above the background areas. The invention also relates to a light- and heat-sensitive material comprising a heat sensitive surface layer of thermoplastic particles in a hydrophilic binder and in the same or another layer, an internal silver halide emulsion so that on production of a silver image as above, the material can be uniformly exposed to render the heat-sensitive layer less waterpermeable. The heat-sensitive material and silver halide emulsion preferably constitute a single layer. The master obtained may be inked up with a normal lithographic ink or with an ink described in Specification 1, 142, 472 to produce a "reversed" planographic plate. The silver halide emulsion is preferably unsensitized and may contain a watersoluble bromide, a water-soluble iodide and a fog-inhibitor such as a tri- or tetra azoline-thione (of Specification 1, 150, 553). The developer preferably contains a fogging agent such as hydrazine, carlazic acid or bi-carbamic acid or salts thereof or alternatively development is carried out using a low intensity light-source. In the examples, an internal gelatino silver bromide emulsion containing cadmium bromide, potassium iodide, lead nitrate, 1 (0-methoxy-phenyl)-2-tetrazoline-5-thione, 2-mercaptrethyl-carbanitate, poly-N-vinyl pyrrolidene and polyethylene particles (constituting the heat-sensitive material) is coated on a support, imagewise exposed in an energetic "surface" developer which either contains carbazic acid or the development is carried out under diffuse light to produce a direct positive silver image. The material is now exposed to a flash-lamp to produce the printing master.
Patent GB-776151-A (GB)
Title: Improvements in washing machines
IPC: D06F33/02
Filed: 1953-10-19
Abstract: 776,151. Dishwashing machines, GENERAL ELECTRIC CO. Oct. 19, 1953 [Oct. 22, 1952], No. 28804/53. Class 138 (1) [Also in Group VIII] A dish washing machine is provided with a flexible tube 24 having one end fixed to receive water from an inlet pipe 18 and its other end movable between a first position (shown dotted) in which it discharges into a washing basket 7 and a second position in which it discharges into a solution dispensing receptacle 13 having a discharge 16 opening into the basket 7. The end of the tube 24 may be automatically moved by means of a bimetallic strip 26 connected to the tube 24 by a spacer 31 and rivet 32. An electric heater 28 wrapped around the strip 26 and a solenoid controlling a valve 19 in the pipe 18, are connected in a circuit controlled by an automatic timer. The invention is described as applied to a clothes washing machine (see Group VIII). An air gap may be left between the pipe 18 and tube 24 or they may. be directly connected.
Patent GB-1049864-A (GB)
Title: Improvements in the production of stainless steel castings and in articles produced therefrom
Inventor: DAWSON DAVID WHITFIELD OUTRAM
IPC: C22C38/44
Filed: 1962-07-27
Abstract: A martensitic steel casting which after annealing contains less than 50% austenite comprises:-  .C.0.03-0.1% .Si.0-.10% .Mn.0-1.5% .Ni.2.5-5.5% .Cr.13-17% .Mo.1-3% .Cu.0-0.48% .S.0-0.05% .P.0-0.05% .Nb.0-0.5% the balance, apart from impurities and incidental elements, being iron.  The casting may be heat-treated as follows:- Solution annealing 1000 DEG -1050 DEG C for two hours, air cooling, tempering at 540 DEG -600 DEG C for 4 hours and then air cooling.
Patent GB-1351832-A (GB)
Title: Data storage apparatus
IPC: G11B23/03
Filed: 1971-06-21
Abstract: 1351832 Recording and playback INTERNATIONAL BUSINESS MACHINES CORP  21 June 1971 [2 July 1970] 28903/71 Heading G5R A read/write head assembly and corresponding track changing means are permanently mounted inside a magnetic disc cartridge. In the cartridge 10 shown, a head assembly 20 is mounted on a carriage 22 engaged with a lead screw 24, and may be driven radially relative to the magnetic disc 12, hub 14, and spindle 16, by selectively pressing the upper/lower portion of a flexible disc 28 attached to screw 24against one of two rings 30a, 30b fixed to hub 14, the disc 28 and screw 24 thereby being rotated clockwise/anticlockwise and carriage 22 moved out/in accordingly. The elements 36a, 36b used for pressing disc 28 against hub 14 are activated electrically, as described with reference to Fig. 2 (not shown), and the radial position of the head assembly is determined with a lamp/photo-cell arrangement (44, 46) described with reference to Fig. 3 (not shown). The cartridge also includes an air filter 60 and circulating fin 58.
Patent GB-450288-A (GB)
Title: Improvements in or relating to the production and use of barium soaps
IPC: C07C51/41
Filed: 1935-10-19
Abstract: A barium soap is prepared by saponifying a drying oil by heating in an autoclave with an amount of barium hydroxide corresponding to about two-thirds of the amount required for complete saponification, together with water.  As an example, 300 kilos of linseed oil are autoclaved at 120 DEG  C. with 200 kilos of water and 120 kilos of barium hydrate for one hour.  The mass is then allowed to cool, and the glycerine-containing water is withdrawn.  The soap may be used as a constituent of cellulose varnishes.  Films of cellulose derivatives may be made by mixing solutions of the barium soap and of a cellulose derivative, pouring the mixture upon a table, and allowing the solvent to evaporate.ALSO:A barium soap is prepared by saponifying a drying oil by heating in an autoclave with an amount of barium hydroxide corresponding to about two-thirds of the amount required for complete saponification, together with water.  As an example, 300 kilos of linseed oil are autoclaved at 120 DEG  C. with 200 kilos of water and 120 kilos of barium hydrate for one hour.  The mass is then allowed to cool, and the glycerine-containing water is withdrawn. The barium soap so obtained may be mixed with turpentine, pigments and a drier to form a paint, in which the pigment particles are protectively coated with the soap, or the mixture, without the pigment, may be used as a varnish.  Paper, cardboard, concrete, plaster and textiles may be waterproofed by means of a solution of the barium soap in turpentine oil.  A jelly, formed by heating the barium soap with white spirit, may have carbon black or plumbago suspended therein to form a liquid black polish for stoves, or may be used to form a paint by the addition of a barium sulphatetitanium dioxide pigment.  The soap may be mixed with cork powder and used in the manufacture of linoleum as a substitute for the usual linseed oil.  It may also be used as a constituent of insecticidal preparations, and of cellulose varnishes.  Films of cellulose derivatives may be made by mixing solutions of the barium soap and of a cellulose derivative, pouring the mixture upon a table, and allowing the solvent to evaporate.ALSO:A barium soap is prepared by saponifying a drying oil by heating in an autoclave with an amount of barium hydroxide corresponding to about two-thirds of the amount required for complete saponification, together with water.  As an example, 300 kilos of linseed oil are autoclaved at 120 DEG  C. with 200 kilos of water and 120 kilos of barium hydrate for one hour.  The mass is then allowed to cool, and the glycerine-containing water is withdrawn.  The barium soap so obtained may be mixed with cork powder and used in the manufacture of linoleum as a substitute for the usual linseed oil.
Patent GB-1386582-A (GB)
Title: Process for the purification of aromatic acids by solvent extraction
IPC: C07C63/04
Filed: 1973-06-19
Abstract: 1386582 Purification of aromatic acids SUN RESEARCH & DEVELOPMENT CO 19 June 1973 [19 June 1972] 28931/73 Heading C2C An impure aromatic acid is purified by heating it in a three-phase heterogeneous system consisting of an aqueous solution of acetic acid, a liquid aromatic hydrocarbon and the impure aromatic acid, the aqueous acetic acid solution containing 40-65% (wt.) of water, the weight ratio of acetic acid to aromatic acid being from 3À75 : 1 to 20 : 1, from 15 to 90% of the aromatic acid being in the solid phase and said heating being carried out in a closed system at a temperature of 200-250 C.; separating the hydrocarbon solvent and isolating the purified acid from the aqueous acetic acid layer. The aromatic acid is a benzene, polycarboxylic or naphthalene mono or polycarboxylic acid. Examples describe the purification of terephthalic acid, isophthalic acid and 2,6-naphthalene dicarboxylic acid.
Patent GB-1163495-A (GB)
Title: Improvements in or relating to Cathode-Ray Tubes
IPC: H01J29/07
Filed: 1967-06-23
Abstract: 1,163,495. Cathode-ray tubes. COMPAGNIE DE SAINT-GOBAIN. 23 June, 1967 [23 June, 1966], No. 29050/67. Heading H1D. A mask 2 in a cathode-ray tube, especially the shadow mask of a colour television tube, which comprises a perforated non-magnetic metal sheet, is attached directly to the glass of the envelope 1 by tabs 5 cut out along the edges of the mask, the tabs being sealed in the glass of the envelope. Preferably the tabs are secured in the seal between the face-plate and the cone of the envelope. The mask may be held at the required tension by rollers during the sealing operation. If the mask is made of material having a greater expansion coefficient than the glass then the assembled face-plate, mask and cone as a whole may be heated in a furnace to an appropriate temperature, e.g. 420-450‹ C. for a vitro-crystalline sealing substance, whereupon the necessary tension in the mask will be produced when it is cooled. If, however, the seal is effected by a cement or cold seal the mask alone may be heated before the actual sealing takes place. The tube face-plate may be flat. Examples of the material of the mask and the dimensions of tube 5 and cutouts 4 are given.
Patent GB-153781-A (GB)
Title: Improvements relating to the manufacture of spools or bobbins
IPC: B65H75/18
Filed: 1919-11-22
Abstract: 153,781. Joseph, B. C., and Joseph, N.C., (trading as Joseph, N C.). Nov. 22, 1919. Bobbins or spools for cotton, thread, or the like are formed by expanding each end of a drum a into the form of a truncated cone and swaging, pressing, or rolling the edges over the rims of stamped sheet-metal end-pieces h, Figs. 3 and 6. The drums are formed by stamping, drawing, spinning, or pressing blanks of aluminium or its alloys or similar light malleable metal, and the drum, both conical ends and one end disk, may be formed from one blank. The end-pieces may be dished, with curved or inclined raised portions, and their rims may be provided with slight radial depressions.
Patent GB-339030-A (GB)
Title: Improvements in or relating to engine stop gear
IPC: F01B25/00
Filed: 1929-09-26
Abstract: 339,030. Cockburns, Ltd., and Mac- Nicoll, D. Sept. 26, 1929. Stop-gear.-In engine stop-gear operative on the failure of forced lubrication a reducing- valve 1 arranged between a cut-off valve 2 and a relay-valve controlling a main cut-off valve, is provided to set up a predetermined normal pressure at the relay valve and to limit the amount of lubricating-oil that can be applied at that pressure to facilitate quick emergency control. A screw 5 is further provided and set in that position in which the pressure at the relayvalve shows a tendency to drop. High-pressure oil is supplied to branch 6; the branch 10 returns the oil to the system. A supply branch 7 and a drain branch 8 respectively are connected to the opposite sides of the relay piston. The branch 9 is connected to a governor. The valve 2, which may be operated by hand, is normally held closed by the differential pressures on its heads against the resistance of a spring. When the oil pressure falls, the valve moves to the left and connects branch 7 to the outlet branch 10. Specification 214,468 is referred to.
Patent GB-632885-A (GB)
Title: Improvements in or relating to cutting tools made of tungsten and similar carbides
IPC: B23P15/34
Filed: 1947-11-01
Abstract: 632,885. Making milling cutters &c. THOMPSON, G. H. Nov. 1, 1947, No. 29195. [Classes 83 (ii) and 83 (iv)] Powder metallurgy.-A milling-cutter or other tool of tungsten or similar carbide is made by compacting the powder, shaping the compact a before sintering so as to form the cutting teeth, such as d, and a recess b adapted to receive a shank or adaptor, then sintering the shaped compact and finally brazing an insert c of steel or other machinable material into the recess.
Patent GB-894617-A (GB)
Title: Process for the preparation of polymeric phosphonitrilic chloride
IPC: C01B21/097
Filed: 1960-08-24
Abstract: Polymeric phosphonitrilic chlorides with a degree of polymerization of from 5 to 15 are prepared by heating polymeric phosphonitrilic chlorides with a degree of polymerization of less than five to a temperature of 250 DEG -350 DEG C. until a highly polymerized rubbery product is obtained, heating this rubbery product in water containing free chlorine at a temperature of at least 90 DEG  C., and recovering the liquid polymeric phosphonitrilic chloride thus formed from the aqueous medium.  The heating of the rubbery product in water may be carried out at any temperature from 90 DEG  C. to the reflux temperature of the mixture, or higher in conjunction with superatmospheric pressures, the higher temperatures being preferred, until a partially depolymerized product is obtained, and the product then extracted with a water-immiscible organic solvent.  The residue may be recycled, and the organic solvent is removed from the extract, e.g. by vacuum distillation, leaving a mixture of liquid and crystalline polymers of PNCl2 which are separated by filtration, for example.  The required liquid product then has an average degree of polymerization of 7-8 and contains (PNCl2)n where n is 5-15.  The quantity of free chlorine present in the water in which the rubbery product is heated is not critical, and it is therefore sufficient to pass chlorine gas through the water.  The reaction time for this stage may be 10-70 minutes.  The water-immiscible solvent may be a lower halogenated hydrocarbon containing up to 3 carbon atoms, for example carbon tetrachloride, chloroform, or sym-tetrachloroethane, or it may be diethyl ether, benzene, toluene, or xylene.