baber/WOPTO huggingface dataset:
Patent GB-1501921-A (GB)
Title: Poling machine
IPC: H01L41/45
Filed: 1975-05-14
Abstract: 1501921 Piezo electric materials MINNESOTA MINING & MFG CO 14 May 1975 [17 June 1974] 20421/75 Heading H1E [Also in Division B5] Film, preferably of polyvinyl or polyvinylidene fluoride is continuously advanced past a poling station that includes a poling electrode separated from the film by a current limiting layer especially one whose electrical resistance is less than the normal per unit surface to surface resistance of the film and provides current limiting protection when an electrical short occurs between the surfaces of the film, is heated so that at any given time only a portion of the film is above the poling temperature, is subjected to a first voltage potential to one side of the heated portion of the film, is subjected to a second voltage potential to the opposite side of the heated portion to establish an electric field that arranges the dipoles in that portion in alignment and is cooled while the dipoles are held in alignment by the influence of the field. The poling machine 1 is employed for poling a film of pyroelectric and/or pieozelectric material comprising a polymeric film 7 coated on one side with a thin layer 9 of an electrically and thermally conductive material such as Al, Cu, or Zn to form a composite sheet 10. The sheet 10 is supplied from roll 8 over a preheat roller 2, a hot poling roller 3, a cold fixing roller 4, an electrically grounded roller 5 and through a pair of driving rollers 6. Roller 3 includes a conductive inner core 11 biased at a high D.C. potential and is also heated. The roller 11 is preferably overlaid with a current limiting layer 12 especially a layer of silicone rubber or ceramic material. Roller 4 is spring biased towards roller 3 and forms a nip 13, the size of which is determined by the film thickness. The layer 9 of the sheet 10 is always in physical contact with the ground roller 5. The poling machine 14 suitable for poling films with no conductive layers includes a preheat roll 16, a cold fixing roller 17, and a heater roller 18 formed of an electrically conductive material and electrically grounded to serve as a means to apply a ground potential to one side of film 15. The film from the supply roller 8 is passed round rollers 16, 18 and 17 and while passing round 18 is subjected to a high voltage D.C. discharge supplied by a plurality of D.C. corona charging units 19. The air gap 21 between units 19 and film 15 provides the current limiting protection and an electric field is established across the film. The film 15 is removed from the electric field before it contacts the cold roller 17 and a portion 23 of the roller 18 is cooled below the poling temperature. In an example a polyvinylidene fluoride film coated with aluminium is poled.
Patent GB-1117270-A (GB)
Title: A process for treating minute polymeric capsules
IPC: B01J13/22
Filed: 1967-05-03
Abstract: Hydrophobic polymeric walls of minute capsules are treated to render them less permeable to liquid diffusion extraction of their contents by contacting the capsules with a solution of a wax in a solvent which will swell but not dissolve the capsule wall material, removing the capsules from the solution and drying them of solvent.  Specified waxes are paraffin wax, beeswax, microcrystalline wax, glyceryl tristearate and polyethylene/polyvinylacetate copolymer.  Typical capsule wall materials are ethyl cellulose, polyvinyl pyrrolidone, polyvinyl pyrrolidone-vinyl acetate copolymer, and vinyl chloride - vinyl p  acetate copolymer.  Core materials specified are aspirin, N - acetyl - p - aminophenol, phenylephrine hydrochloride, amphetamine sulphate, chlorpheniramine maleate, meprobamate, spiramycin, oxytetracycline HCl, potassium penicillin G, sodium fluorescein, NaHCO3, KCl and (NH4)2Cr2O7.  Suitable solvents are cyclohexane and toluene/ethanol.
Patent GB-531155-A (GB)
Title: Improvements in and connected with damping rollers for printing
IPC: B41N7/04
Filed: 1939-07-13
Abstract: 531,155. Rollers. BUDD, C. H. July 13, 1939. No. 20456. [Class 42 (ii)] [Also in Group XVI] A damping roller for a lithographic printing machine is provided with circumferentially grooved extensions or collars adjacent the ends of the roller to receive clamping rings for clamping the ends of the absorbent sleeve surrounding the roller. In one form, the roller shaft 2 is provided at each end with a flanged collar 5 on to which the ends of the sleeve 4 are secured by a split ring 9 provided with a clamping screw and nut. The collar may seal the junction between the roller stock 1 and its usual composition covering 3, or a separate sealing washer 13 may be provided. The collars 5 may be integral with the shaft 2 and roller stock 1.
Patent GB-348945-A (GB)
Title: Apparatus for the automatic stopping of a wire gauze loom upon the breaking of a warp thread
IPC: D03D41/00
Filed: 1930-07-05
Abstract: 348,945. Stop-motions for wire-weaving looms. VEREINIGTE STAHLWERKE AKT.-GES., 67, Brietestrasse, Dusseldorf, Germany.-(Assignees of Merse, W. ; Brunn, Thuringia, Germany.) July 5, 1930, No. 20465. Convention date, July 30, 1929. Addition to 294,645, [Class 142 (i), Looms, Driving &c.]. [Class 142 (i).] In stop motions of the kind claimed in the parent Specification for stopping the loom upon the breakage of a warp or weft wire, insulated steel wires 5 are stretched between the reed 2 and harness 1 above and below the warps and are connected electrically to the conductor rails 6, so that should a warp break near the reed or harness, the circuit will be completed for operating the relay for stopping the loom.
Patent GB-531209-A (GB)
Title: Improvements in or relating to self-acting mules
IPC: D01H3/08
Filed: 1939-07-14
Abstract: 531,209. Spinning-mules. WOOL INDUSTRIES RESEARCH ASSOCIATION, and WRIGHT, R. W. July 14, 1939, No. 20493. [Class 120 (ii)] A spinning mule has a continuously variable speed gear incorporated in the drive from the feed rollers to the tin roller. As shown, a conical pulley 8 is fixed to an extension 9 of the shaft of one of the feed rollers 10 and is coupled by a belt 7 with an oppositely arranged conical pulley 5 free to revolve on a shaft 6 and carrying a pinion 4 gearing with a spur wheel 1 on the shaft of the tin roller. The shaft 6 is carried in an angle lever 11 pivoted coaxially with the tin roller in a block 12 and loaded by a spring 14 which maintains the belt 7 taut. The belt is guided and adjusted along the pulley by a fork 15 actuated by a screw 16 mounted in a bracket 18 and operated by a handwheel 17.
Patent GB-441138-A (GB)
Title: Improvements relating to the body or frame structures of engines, particularly internal combustion engines
IPC: F02F7/00
Filed: 1934-07-13
Abstract: 441,138. Uniting by fusion. SACCAGGIO, P. C., El Chalet, Remedios de Escalada, Ferrocavril del Sud, Buenos Aires July 13, 1934, No. 20598. [Class 83 (iv)] [See also Group XXVII] Welded joints of an engine frame comprise forming the faces of a tenon 17 and mortice 18 with grooves which are subsequently filled with welding metal 21 which thus forms a key between the faces. In Fig. 9 a corresponding tapering hole and slot in plate: 37, 38 are filled with the welding metal 39.
Patent GB-258538-A (GB)
Title: Improvements in compressors for air and other gaseous fluids
IPC: F02B71/00
Filed: 1925-06-09
Abstract: 258,538. Pescara, R. P. June 9. 1925. Cylinder and piston reciprocating in opposite directions; regulating compression.-In a motor compressor unit with free piston separating the combustion and compression spaces, the return stroke is effected by a gaseous buffer, the final pressure of which is made equal to the reservoir pressure. The cylinder is free to slide in the frame 10, balancing the piston movement. Compressed fluid is delivered through ports 51 in the cylinder, when they register with valved openings 52 in the casing 10, to the reservoir 54 which is connected by a pipe 115 with the hollow axle 98, Fig. 2, a lever 97 connected with the cylinder head 13. This lever is also connected by a flexible tube 135 with an auxiliary reservoir 107 in the head, communicating through hollow bolts 105 and passages 108, 109 controlled by a spring- pressed valve with the interior of the cylinder. At the end of the compression stroke the lever 97 is turned into a position allowing communication between the reservoir 54 and the cylinder through the reservoir 107 and its communicating passages. The effect is to stabilize the piston stroke. Air inlet takes place through passages 55 having inlet valves 56 and non-return valves 58 operating in case of breakage of valves 56. Specification 257,995 is referred to.
Patent GB-284942-A (GB)
Title: Improvements in selenium cells
IPC: H01L31/18
Filed: 1927-08-06
Abstract: 284,942. Neale, J. Aug. 6, 1927. Selenium cells.-Relates to selenium cells of the kind in which electrodes of conducting material, preferably in the form of interdigitated combs or grids, are formed on an insulating base and coated with a film of selenium, and consists in forming the electrodes, so that they may be relatively immovable, by the method of " fusing- in " whereby gold is applied to earthenware or china. On a plate of acid glass or like material the pattern of one of the electrodes is impressed by means of a rubber stamp or a stencil in "silver G " solution containing gold or platinum or both. The plate is then fired at 525‹ or other suitable temperature until the metallic content of the solution becomes " fused in," or incorporated with the glass without actually fusing. The process is repeated, with the aid of a registering stamp-holder or stencil-holder, as often as necessary, and the plate is then coated with selenium at 200‹, annealed, seasoned, and, if desired, mounted in vacuo. Instead of being fired after each application of the stamp, the plate may be merely dried, and firing then takes place after several applications.
Patent GB-414514-A (GB)
Title: Improvements in or relating to lure carriers for use on dog racing tracks
IPC: A63K1/02
Filed: 1933-07-24
Abstract: 414,514. Dog - racing apparatus. OLIVER, R. O., 24, Union Road, Exeter. July 24, 1933, No. 20756. [Class 132 (i).] A lure carrier consists of a trolley fitted with six pairs of wheels, one pair engaging the top of the mono-rail, two pairs each side of the mono-rail, and one pair the bottom of the monorail. As shown, the lure carrier comprises a trolley running on a rail R supported on brackets B each carrying a guidepulley P for the driving cable O. The trolley consists of two metal frames F1 between which are fitted six pairs of wheels W<1>, W<2>, W<3>, W<4>, W<5>, and w<6> running on ball bearings and fitted with noiseless tyres. Two vertical wheels W<1> run on the upper edge and two vertical wheels W<4> run on the lower edge of the rail R. The horizontal pairs of wheels W<2>, W<3> run on one side and the horizontal pairs of wheels W<5>, W<6> run on the other side of the rail R. The arm A<1> carries the lure. The jaws J<1>, J<2> gripping the cable O are operated by the levers L<1>, L<2>, and L<3> which are connected by a rod K to an arm T engaged at the driving point by a cambar C to cause the jaws J<1>, J<2> to disengage the cable until the driving-point has been passed.
Patent GB-499362-A (GB)
Title: Scraper arrangement for centrifugal separators
IPC: B04B11/08
Filed: 1938-07-13
Abstract: 499,362. Centrifugal separators. TER MEER, G. July 13, 1938, No. 20771. Convention date, July 31, 1937. [Class 23] The solids on the bowl wall 6 of a centrifugal separator are discharged by means of a scraping knife 2<1> on a carrier 2 the operation of which is varied automatically so that the extreme position of the knife 2<1> is changed at each movement. The carrier 2 is attached to the piston of the cylinder 1 which is controlled by the reversing valve c. A projecting arm on the carrier 2 carries an eccentric 3 rotated by a ratchet wheel which engages the pawl 4 on the casing at each back stroke of the knife 2<1>. With the parts as shown, oil under pressure is supplied through the valve c and pipe b to the cylinder 1 to raise the piston and the knife 21. Just before the knife reaches its extreme position the eccentric 3 strikes the control pin 5 to initiate the reverse movement. The pin raises the piston 5<1> to open the pipe 8 so that oil supplied to the cylinder 10 raises the piston 9. As the knife continues to travel upwards the piston 5<1> closes the pipe 8 and the piston 9 drops to operate the ratchet wheel 11. This rotates the roller 13 and releases pressure from one side of the reversing valve c which is then operated to permit oil to flow through the pipe a to the cylinder 1 to cause the knife to move away from the bowl wall. The eccentric 3 is rotated during the backward movement of the knife by the engagement of its ratchet wheel with the pawl 4, and as a different portion of the eccentric engages the pin 5 at each operation, the knife 2 moves to a different extent each time. A rotating disc f has a number of adjustable stops g, to initiate and terminate the series of operations by the engagement of the stops with the control pin h.
Patent GB-580587-A (GB)
Title: Sensitive photographic materials and the development of images therein
IPC: G03C1/34
Filed: 1944-10-26
Abstract: 580,587. Reducing development fog. KODAK, Ltd. Oct. 26, 1944, No. 20891. Convention date, Dec. 14, 1943. [Class 98 (ii)] Fog is reduced during development of a latent image in a silver halide emulsion by performing the development in the presence of thiosalicylate ions introduced either as the free acid or a water-soluble salt thereof. The thiosalicylic acid or salt thereof may be incorporated in the emulsion, in a backing or overcoating layer, in the developing solution, or in a prebath prior to development. In example 1, thiosalicylic acid is incorporated in a rnetolhydroquinone developer, and in example 2 in a hydroquinone developer. In example 3, an aqueous solution of sodium thiosalicylate is incorporated in a liquid silver halide emulsion. Another anti-foggant may be used in addition, either in the same or an adjacent layer. The emulsion support may be glass, cellulose ester, synthetic resin or paper.
Patent GB-597914-A (GB)
Title: Improvements in or relating to flexible power-transmission means
IPC: F16C1/26
Filed: 1945-08-14
Abstract: 597,914. Bowden mechanism. TURTLE, R. C., HERBERT, A. T., and ARENS CONTROL, Ltd. Aug. 14, 1945, No. 20893. [Class 80(iii)] A flexible power transmission device comprises a composite inner core 2, 3, 4, an outer case 5, 6 and an intermediate sheath 1, composed of a helically wound metal strip, preferably having a concave cross section to minimise friction at bends. The device may be enclosed in a protective sheathing 7 held in place by a helically wound wire 8 to exclude dust and damp. An end fitting 9 may be secured to the main and reinforcing casings by means of indentations 10, to provide anchorage for the flexible housing, and a bearing for an end member 11 having a socketed end for receiving the reinforced cable 2.,
Patent GB-916050-A (GB)
Title: Improvements in or relating to fluid impervious diaphragms
IPC: F16J3/02
Filed: 1960-06-14
Abstract: 916,050. Fluid - impervious diaphragms. HILLMAN Ltd., J. & A., and HILLMAN, J. L. April 13, 1961 [June 14, 1960], No. 20897/60. Class 140. A fluid impervious diaphragm is produced by stretching a knitted nylon fabric about a rigid non-absorbent former, forming on the exposed surface of the fabric a coating of desired thickness by applying thereto a solution containing a polymer based synthetic rubber blend, and thereafter vulcanizing the coating and removing the coated fabric from the former. The polymer may be a gas-resistant polymer such as chlorosulphonated polyethylene. The coating may consist of a plurality of superimposed coats each of which is dried to remove solvent before the application thereto of the succeeding coat. The former may be made of glass or porcelain. The blend may also contain polyethylene, and the gas impermeable polymer may be replaced by an oil impermeable polymer to produce an oil impermeable diaphragm. The coating may be applied by dipping, spraying or brushing the blend on to the fabric 1 stretched about former 3, secured in a taut condition by band 4. After the coating 2 has been vulcanized, the fabric is removed from the former and trimmed along line 6.
Patent GB-1457992-A (GB)
Title: Stanchions
IPC: B62D33/02
Filed: 1975-05-16
Abstract: 1457992 Bolts F HESTERBERG & SOHNE 16 May 1975 [16 May 1974] 20988/75 Heading E2A A hinged stanchion 3 on the loading deck of a goods vehicle remains locked in its erect position until the sides of the deck have been lowered. The stanchion is pivoted at 7 to the frame 1 of the deck and is held in a vertical position by a sliding bolt 4 engaging a pocket 2 secured to the frame 1. The bolt may be lifted against spring 10 by pulling lever 12, 15 out from the position shown in Fig. 1 to that shown in Fig. 2, but while the adjacent side is in its erected position, this movement of the lever is prevented by its presence (Fig. 3, not shown).
Patent GB-170104-A (GB)
Title: Carburetor
IPC: F02M21/00
Filed: 1920-07-12
Abstract: 170,104. Lamb, E. P., and Bird, J. July 12, 1920. Spray carburettors.-The carburettor comprises a fuel port 40 supplied with light fuel at starting by means of a movable tube 35, which is immersed in fuel at its lower end when an airinlet valve 37 is closed and lifted out of the fuel when the air-valve is opened. The tube 35 is supplied from a well 34 connected to a float chamber 29, and has a collar 39 acted upon by an arm 38 on the air-valve and by a spring 36. The upper end of the tube slides in a passage 45 in a plug 46, and when the tube is depressed the upper end is in communication with the port 40. The air supply enters the mixing-chamber 24<a> through ports 25 and past a suction-actuated valve 22 provided with radial'fuel ducts, which are closed when the valve is on its seat 24. The hollow stem 16 of the valve has a constriction 17 controlled by a hand-adjusted needle valve 18, and terminates in a dash-pot piston 14 having a perforation 13 and working in a fuel chamber 12. Heavy fuel for normal running is supplied to the chamber 12 from a float chamber 1 through ports 6, a conical space 7, and ducts 11, and is heated by exhaust gases admitted to a chamber 9<a> by a valve 10. Specification 17676/15 is referred to.
Patent GB-882379-A (GB)
Title: Transformer or choke coil for high voltages having a specially insulated and screened winding
IPC: H01F27/32
Filed: 1959-06-18
Abstract: 882,379. Transformers and inductances. SMIT & CO'S. TRANSFORMATORENFABRIEK N.V., WILLEM. June 18, 1959 [June 18, 1958], No. 21023/59. Class 38 (2). A high voltage winding 1 (Fig. 1) screened by an insulated metal shield ring 4 is insulated by a solid cylinder 2 which has flanges 8, 9 and 10 bent therefrom and incorporates a conducting or semi-conducting screen 18 connected to the winding and continued into flange 8. An annular space is formed between the top of shield ring 4 and the lower curved edge of a second shield ring 6, the screen 18 inside the insulating flange 8 terminating as near as possible to the bottom of the annular space. The rings 4 and 6 may be replaced by a single ring of shape similar to their combined shape or may be of the same radial width with the annular space between their outer edges. An alternative construction using a single ring 4 of simple form is shown in Fig. 2.
Patent GB-1293775-A (GB)
Title: Improvements in or relating to non-crucible zone melting apparatus
IPC: C30B13/28
Filed: 1971-04-19
Abstract: 1293775 Zone-melting SIEMENS AG 19 April 1971 [10 Feb 1970] 21029/71 Heading B1S  In order to centre a crystalline rod in a floating zone-melting apparatus, without having to adjust the mutual inclination of shafts 5 and 6, bearing blocks 9, 10 are adjustably seated on plane milled and/or plane ground surfaces 17, 18, which are parallel to one another to within 0.015‹ and similarly formed surfaces on the bearing blocks are each normal to the axis of the respective shafts 5 or 6, with a tolerance of at most 0.015‹. Flanges 13 and 14 are mounted, without play, in clamping discs 21 and 22. Screws engage the holes 25, 26 with play, so that centring may be effected, by moving the discs 21 and 22, before finally tightening the screws. Vacuum sealing rings 23a, b and 24 a, b are provided.
Patent GB-375583-A (GB)
Title: A holder for a pen, pencil or the like
IPC: B43M99/00
Filed: 1931-07-23
Abstract: 375,583. Desks. GASTEREN, J. P. VAN, 158, Groote Houtstraat, Haarlem, Holland. July 23, 1931, No. 21097. [Class 52 (iii).] In pen, pencil, and like retainers of the type comprising a cord, wire, or like flexible connection winding on a spring-controlled drum, and an automatic detent for preventing rewinding of the unwound connection, the detent is arranged so that it is automatically released when the pencil &c. is returned to its support. A pencil is shown supported in clips d, e on a block a, and attached by a cord g to a spring drum h. The clip e is slidable in a sleeve n, upwards under the action of a spring o and downwards by the weight of the pencil, and is provided with a downward extension p for contact, under the weight of the pencil, against one end of a detent lever m, which is loaded by a weight l or a spring at the opposite end, and clamps the cord g against a bent plate j when the pencil is removed from the supports d, e. In place of the block a, the device may be mounted on or in a writing desk &c.
Patent GB-863221-A (GB)
Title: Improvements in or relating to electrical distribution ducts
IPC: H02G5/06
Filed: 1958-07-02
Abstract: 863,221. Bus-bars. SQUARE D CO. July 2, 1958 [Aug. 16, 1957], No. 21143/58. Class 36. Bus-bars 4 are supported on spaced insulating partitions 5 within ducting 1 and gas-evolving material is arranged between the partitions so that an arc formed within the ducting is blown along it by the evolved gas. As shown, sheets 7, 9 of the gas-evolving material are disposed between the insulating partitions 5 and the ducting walls and overlap the partitions so as to project into the spaces between them. The busbars 4 are positioned within openings 21 in the supports 5 and arcing channels 25 extending through the partitions to allow an arc formed between the bus-bars or between a bus-bar and, the ducting to be blown along the ducting. Neutral bus-bars 27 are held in openings 26 in the partitions and grooves 29 in the partitions increase the creepage resistance between the bus-bars 4 and 27.
Patent GB-332727-A (GB)
Title: Appliance for pressing neck-ties and the like
IPC: A47G25/78
Filed: 1929-07-10
Abstract: 332,727. Everitt, J. July 10, 1929. Presses- A device for pressing and stretching neckties comprises two or more rigid and suitably shaped strips a, c, Fig. 2, for insertion in the open end of a necktie and clamping means independend of the strips for detachably pressing them together. The clamping means may comprise a bowed spring d inside of, and, if desired, secured to a bridge bracket e adapted to slide along the strips, as shown in Fig. 2, or, alternatively, it may be constructed as shown in Fig. 10. In this construction the bridge bracket is in two parts e<4>, e<5>, adapted to be moved relatively to one another by finger pieces e<6>, e<8> formed thereon to enable the clamping device to be placed in any position along the strips a, c, A clip f holds the parts e<4>, e<5> slidably together and also retains the bowed clamping spring d in position.