baber/WOPTO huggingface dataset:
Patent GB-899118-A (GB)
Title: Magnetic tape search system
IPC: G11B15/00
Filed: 1960-05-27
Abstract: 899,118. Driving magnetic tapes. NIPPON ELECTRIC CO. Ltd. May 27, 1960 [June 4, 1959], No. 18881/60. Drawings to Specification. Class 40 (2). Photoelectrically-sensed holes in a magnetic tape indicate the starting points of a plurality of separate recordings and operate counter means indicating the part of the tape adjacent the transducing point. To transduce a distant part of the tape, a counter signal is compared with one indicating the desired recording to engage high-speed drive of appropriate direction to drive the tape to the vicinity of the desired starting point, at which a normal tape transducing speed is resumed. The high-speed drive is rendered inoperative when the desired recording is relatively close.
Patent GB-1276834-A (GB)
Title: Improvements relating to the manufacture of glass or plastics structures
Inventor: BANNISTER DENNIS ROBERT
IPC: B05D1/10
Filed: 1968-04-22
Abstract: 1276834 Coating PLESSEY CO Ltd 8 July 1969 [22 April 1968] 18906/68 Heading B2E [Also in Division C1N] A glass or plastics structure having a metallic coating is obtained by spraying glass or plastic material to a depth of at least 1/16th of an inch on to a metal coating which is carried by a suitably shaped temporary support member and removing the glass or plastics structure having the metallic coating attached thereto from the temporary support member. The metal coating may be applied to the temporary support member, which may be in the form of a mandrel, by spraying. A release agent such as graphite or polyvinyl alcohol may be interposed between the coating and the metal. The metal may be silver, tin alloy, zinc or aluminium and may be 35 thousandths of an inch thick. The plastics material may comprise nylon, polyethylene, cellulose acetate butyrate, acrylic or epoxide material. Glass fibres may be introduced in the plastics material in order to increase the mechanical strength.
Patent GB-1448158-A (GB)
Title: Bituminous material for making road surfaces
IPC: C08K5/17
Filed: 1975-12-11
Abstract: 1448158 Bituminous composition WOLFF & MULLER 11 Dec 1975 18917/74 Heading C3N A bituminous material for use in making surfaces for roads comprises a mixture of hard bitumen, defined as having a penetration no greater than 80 <SP>1</SP>/ 10  mm., and an additive comprising 40-50% by weight tar oils, 2-5% by weight naphthalene, 2-5% by weight anthracite, 1-2% by weight phenols, 3-8% by weight polyamines, the remainder being pitch or asphalt. The additive preferably comprises 50% by weight tar oil, 3% by weight naphthalene, 3% by weight anthracene, 1À5% by weight phenols, 5% by weight polyamines, and the remainder being pitch. The bitumen is preferably bitumen B45 or B60. The proportion by weight of the additive to bitumen may be 1 : 10. Preferably the additive comprises 10- 15% by weight of the material. A material for surfacing roads preferably comprises a mixture of crushed stone, sand, fillers and 7-8% by weight of the aforesaid bituminous material (9  parts bitumen B45 and 1 part additive). An ideal composition comprises, in parts by weight, 65 parts crushed gravel, 24 parts sand, 10 parts limestone, 1 part asbestos and 7À4-7À8 parts of the aforesaid bituminous material.
Patent GB-313770-A (GB)
Title: Improvements in and relating to cigarette cases and boxes and other similar hinged receptacles
IPC: A24F15/12
Filed: 1928-06-29
Abstract: 313,770. Mordan & Co., Ltd., S., Stevens, E. G., and Brown, H. W. June 29, 1928. Barrel and cylindrical hinges.-In a cigarette case or other receptacle comprising two hinged members which are slid relatively to each other to release the catch or catches holding them together and in which one part a of the sliding hinged connection is in the form of an undercut groove a<1> receiving a correspondingly-shaped projection c<2> on the other part c, means are provided to limit the relative movement of the parts so that in the open position the end of the part c does not move past the'inner edge f of the flap or member b carrying the part a; by this means no free space is left on the inside of the case in which tobacco dust &c. can collect and interfere with the working of the hinged connection a, c. A pin in the part c may engage a slot in the part a to limit the movement or the ends of the groove may be filled in and the projection made shorter than the groove. The project,ion and groove are preferably of dovetail cross-section but they may be of circular crosssection.
Patent GB-530719-A (GB)
Title: Improvements in and relating to aircraft
IPC: B64C23/00
Filed: 1939-06-29
Abstract: 530,719. Reducing surface friction between a body and a fluid. JUNKERS FLUGZEUGUND-MOTORENWERKE AKT.-GES. June 29, 1939, No. 18958. Convention date, July 11, 1938. Drawings to Specification. [Class 4] In an aircraft having means discharging or taking in boundary layer air, an air-delivery device common to a plurality of aero-engines is driven by all the engines. As shown, the device is driven through free-wheel couplings.
Patent GB-426706-A (GB)
Title: Improvements in or relating to cathode ray tubes for use for television and like purposes
IPC: H01J29/52
Filed: 1933-07-04
Abstract: 426,706. Cathode-ray tubes. TELEFUNKEN GES. FUR DRAHTLOSE TELEGRAPHIE, 12, Hallesches Ufer, Berlin. July 4, 1933, No. 18998. Void [Abridged as open to inspection under Sect. 91 of the Acts, Jan. 5, 1934]. [Class 39 (i)] A cathode-ray tube has means for accelerating the beam in stages and means for modulating its intensity by the cut-off method, wherein the beam is varied relatively to an apertured electrode so that more or less of the beam is cut off. The tube shown has an anode 1 at a low potential, electrodes 2, 3, modulating the cut-off at an apertured electrode 4, directioncorrecting electrodes 5, 6, and an anode 9 at a high potential. The arrangement should be such that the field due to the anode 9 does not affect the beam while it passes at low speed through the electrodes 2-6; for this purpose an anode 1a at a low potential, and having a smaller aperture than that in the anode 9, may be placed in front of the anode 9. An annular coil 10, producing a magnetic field, may be provided for correcting manufacturing errors, and a magnetic screen may be interposed between the coil 10 and the scanning coils 7, 8.
Patent GB-1212477-A (GB)
Title: Manufacture of electrodes for semiconductor devices and devices incorporating the electrodes
IPC: H01L23/48
Filed: 1969-04-14
Abstract: 1212,477. Semi-conductor devices. COMPAGNIE GENERALE D'ELECTRICITE. 14 April, 1969 [17 April, 19681, No. 19075/69. Heading H1K. A solid electrcde forming part of a pressure contact in a semi-conductor device is subjected to a pressure greater than that to which it will be exposed in operation and subsequently ground before assembly into the device. Typically the copper electrodes 2, 3 (Fig. 1) are disposed between flat plates and there subjected to the said pressure. The inner surface of each electrode is afterwards ground, electroplated with gold, silver or platinum, lightly reground to provide a good contact surface, and then assembled with the gold-plated silicon thyristor element 1 in the sealed casing which in operation is clamped between finned heat radiators 4, 5.
Patent GB-213825-A (GB)
Title: An improved construction of bench vice
IPC: B25B1/10
Filed: 1923-07-25
Abstract: 213,825. Hutley, C. July 25, 1923. Clutch and like wrenches.- The handle 24 is pivoted to a part rotating within the body 21 of the wrench and has a projection 25 to engage notches 27 in the body. In a modification the handle is pivoted to a collar housed in a circular recess on the outside of the body.
Patent GB-1294597-A (GB)
Title: Textile apparatus
Inventor: GIBBONS DOUGLAS
IPC: D02G1/06
Filed: 1970-04-22
Abstract: 1294597 Spindles, driving ERNEST SCRAGG & SONS Ltd 20 April 1971 [22 April 1970] 19237/70 Heading DID A belt-driven yarn-twisting apparatus comprises a block 23 mounted on slides 13 projecting from a beam 12 and movable on the slides so that a wharve or wharves 16 may be brought into and out of engagement with a drive belt (not shown). Movement of the block 23, which is urged by a spring 24 away from the beam, is controlled by a cam 18 rotatable, but not axially movable, on one of the slides, and having a cam surface 18a coacting with a pin 22 projecting from a sleeve 21 which is attached to the block 23. A bearing plate 27 removably and adjustably secured to the block 23 by dovetail clamping means 26 carries the two wharves 16 and roller units 28 against which a false twist spindle is held by a magnet (not shown). Other twisting apparatus, e.g. friction twisting or break spinning apparatus, may take the place of the false twist spindle.
Patent GB-842166-A (GB)
Title: An instrument for recording telephone messages
IPC: H04M1/65
Filed: 1957-06-19
Abstract: 842,166. Substation equipment. BOUDES, J. June 19, 1957 [June 19, 1956; July 9, 1956], No. 19282/57. Class 40 (4). An automatic answering and recording apparatus comprises an electrically-driven tape recorder A, an electrically-driven tape announcer B, an electric time switch C, a first relay 14 arranged to complete a current supply circuit from mains leads 29 and 30 to the recorder and time switch when ringing current is received over the telephone line 11, 12, a second relay G operable after a short interval by the time switch to disconnect the telephone line from the first relay 14 and to connect the line to the audio input terminals 2 of the tape recorder A, and a third relay F serving when de-energized to complete a current supply circuit to the tape announcer B and when energized to switch on the recorder A, the third relay F being coupled to the time switch so as to be de-energized after a short interval which allows the recorder A to warm up, and the announcer B including an endless tape 8 carrying a rider 7 which, after a complete revolution of the endless tape 8, completes a circuit through contacts 6 whereby the third relay F is again energized, causing the announcer B to stop and the recorder A to run until the time switch C reaches the end of its cycle and switches off the apparatus. Shortly before the end of the cycle, the time switch C briefly closes contacts 38 and 39 to give an audible warning signal to the calling subscriber from an audio oscillator (not shown).
Patent GB-1075119-A (GB)
Title: Improvements relating to spinning frames
Inventor: MACKIE JOHN KAY PRINGLE
IPC: D01H7/56
Filed: 1963-05-15
Abstract: 1,075,119. Lubricating spinning rings. JAMES MACKIE & SONS Ltd. May 6, 1964 [May 15, 1963], No. 19325/63. Heading DID. A ring rail has an oil trough 7 of transparent material (preferably a plastics material) fitted beneath its upper surface and openings 6 for the passage of wicks, the front flange 8 of the rail being formed with an opening whereby the oil level in the transparent trough may be observed. The trough 7 is associated with the wicks from adjacent rings in a section of rail. As shown each ring, which is of a porous sintered metal, has a groove 4 in which a wick lies. The wick passes to the trough 7 via a groove in the upper surface of the rail and one of the openings 6; this section of the wick is provided with a sleeve 16 of oil proof material such as nylon. A nipple passing through the ring rail and into the trough is provided for refilling; alternatively a small hole is provided in the mill.
Patent GB-1488597-A (GB)
Title: Location of card guides in printed circuit card frames
IPC: H05K7/14
Filed: 1975-05-08
Abstract: 1488597 Rack mounted printed circuit assemblies CRITCHLEY BROS Ltd 8 April 1976 [8 May 1975] 19350/75 Addition to 1395315 Heading H1R A frame construction for retaining printed circuit boards or other laminar electrical components comprises two or more elongated parallel spaced supports, and plural transverse guides grooved or slotted to receive edges of the board with locating means at the ends co-operating with corresponding locating means of each support; the latter being ribbed for snap engagement with a groove of each guide; there being provided corresponding interengaging projections and recesses at spaced intervals of the ribs and grooves to prevent longitudinal relative movement therebetween. In Fig. 1 the frame comprises end plates 10, e.g. of synthetic plastics or sheet metal interconnected by parallel rails 11, 12, 13 of, e.g. aluminium alloy or synthetic plastic extrusion. Such rails have longitudinal grooves 14 of the under surfaces to receive fixing screws 15 of the end plates and also ribs 16, 17 extending from the side faces. Guides 20 of plastics material facingly grooved in the respective upper and lower surfaces to receive, e.g. printed circuit boards extend transversely, with end grooves 22 having restricted mouths 23 (Fig. 3) snapping on to a rib 16 or 17. A plastic identification strip 25 may be slid or snapped into a disengaged rail 16, which may also receive cable marking C-clips (not shown). Plural pairs of supports and alternately facing guides may be provided at different levels to receive plural superimposed packs of printed circuit boards, and edge connectors for the printed circuit boards may be provided and screwed into grooves of the supports (Fig. 2, not shown). Guides 20 are located on the supports 11 to prevent longitudinal movement by projections 18 in grooves 22 engaging complementary recesses 19 of ribs 19 of the supports 11, and the projections and recesses may be interchanged (Figs. 3 to 7). In a modification (Figs. 8 to 10, not shown) locating projections of the grooves of the guides extend to the outer surfaces thereof and engage complementary recesses of the ribs of the supports. Alternatively a cylindrical spigot projecting from ends of guides engages a complementary recess of the supports (Figs. 11, 12, not shown).
Patent GB-1089323-A (GB)
Title: Method of chlorinating polyvinyl halide materials
IPC: C04B35/12
Filed: 1965-05-07
Abstract: In a method of chlorinating a vinyl halide polymer the polymer is subjected in a finely divided state to actinic radiation while fluidized with gaseous chlorine or mixture thereof with other gases. Specified polymers are polyvinyl chloride and copolymers of vinyl chloride with vinylidene chloride, vinyl acetate, methyl acrylate, methyl methacrylate, acrylonitrile, ethylene, propylene or styrene. The gas mixture may contain nitrogen or hydrogen chloride, and water vapour may be added as supplementary catalyst.  Residual chlorine and/or hydrogen chloride may be neutralized with an alkene or alkylene oxide, e.g. ethylene, propylene, butylene, ethylene oxide or butylene oxide.  The method may be effected batchwise or continuously, and apparatus suitable for carrying out the method is described and illustrated.
Patent GB-981912-A (GB)
Title: Improvements in or relating to brake booster mechanisms
Inventor: SCHULTZ FORREST O E
IPC: B60T13/565
Filed: 1961-05-30
Abstract: 981,912. Fluid-pressure brakes. MIDLAND-ROSS CORPORATION. May 30, 1961, No. 19449/61. Heading F2F. [Also in Division G3] In a power - operated vehicle braking mechanism with a vacuum-powered piston-type booster motor 13, part of one side 75 of a piston 53 is permanently acted upon by the vacuum and the remainder is acted upon by atmospheric pressure, whilst the amount of braking is determined by a variable pressure applied to the other side 76 of the piston, the latter being at least in part restored to a normal position after brake application by the atmospheric pressure. The piston 53 operates in a closed housing and atmospheric pressure is applied to the central region of the piston by a flexible bellows member 80, one end of which is attached to the piston. The other end of the bellows member covers the end of a master cylinder 14 and the atmospheric pressure in the bellows acts to prevent leakage of hydraulic fluid from the master cylinder 14. This  construction eliminates the  use of one or more return  springs normally employed by utilizing differential  pressure to release the piston to its original position. The construction and operation of the dual piston brake booster mechanism shown in Fig. 2 is as described with reference to Specification 981,913.
Patent GB-774806-A (GB)
Title: Improvements in photographic sensitive materials
Inventor: WAGNER HANS MAX
IPC: G03C1/043
Filed: 1954-07-02
Abstract: Polyethylene oxide derivatives are prepared by passing ethylene oxide with vigorous stirring into (1) 2-methyl-4-hydroxy-7-ethylundecane; (2) 2 : 4 : 8 - trimethyl - 6 - hydroxynonane; (3) 5 - ethyl - 2 - hydroxynonane; and (4) 7-hydroxymethyl-pentadecane, using boron trifluoride-acetic acid complex as catalyst.  About 11 to 12 mols. ethylene oxide are combined with compound (1), about 7 mols. with compound (2), 8 to 9 mols. with compound (3), and 21 to 22 mols. with compound (4).
Patent GB-1037295-A (GB)
Title: Improvements in or relating to rolls of thermoplastic sheet material
Inventor: NOBLE DENNIS ALEXANDER JOHN
IPC: B29C65/02
Filed: 1964-05-11
Abstract: 1,037,295. Rolls of thermoplastic film. BRITISH CELLOPHANE Ltd. May 11, 1965 [May 11, 1964], No. 19500/64. Heading B5B. At one or both ends of a roll of thermoplastic film all the individual turns are welded to neighbouring turns at discrete points by being heat-sealed. The welding of the turns may be carried out by applying a hot elongated sealing member across an end of the roll so that the turns in the immediate vicinity of the member melt and fuse together. The sealing member may be an electric resistance wire heated by the passage of an electric current, or it may be a heated rod or a heated ridge on a platform against which the end of the roll is pressed. Two or more heat-seal lines, angularly spaced with respect to each other, may be applied if required. These may be applied in turn by the hot elongated sealing member or by a heated star-shaped device applied centrally to one or both ends of the roll. The roll may be welded to a depth of 0À01 to 0À03 inch. The invention is particularly applicable to polyethylene films the object of the invention is to prevent the tendency of the roll to uncoil spontaneously while at the same time the roll may be unwound as and when required without damage to the body of the film, the turns tearing apart only at the welded points.
Patent GB-1473237-A (GB)
Title: Open top frozen food display cabinet
IPC: A47F3/04
Filed: 1974-05-03
Abstract: 1473237 Refrigerated display cabinets UNILEVER Ltd 3 May 1974 [5 May 1973] 19553/74 Heading F4H In a refrigerated display cabinet in which an air curtain is directed across the access opening by means of a fan 8, which draws the air down a suction duct 4 and passes it over an evaporator 9 to a supply duct 6, the bottom of the interior 3 is provided with a cooling plate 11 for preventing the bottom layer of stacked products from warming up during defrosting of the evaporator 9. The plate 11 may be in the form of a shell and coil evaporator, through which there is a constant flow of refrigerant, or may be a eutectic plate. A thermally insulating plate 12 is provided between the plate 11 and the air duct 5. The evaporator 9 is defrosted by heating the air passing thereover by means of electric heaters 10. The cabinet may be in the form of two side-by-side compartments, Fig. 2 (not shown) and further cooling plates may be provided at the side walls of the compartment interior.
Patent GB-793224-A (GB)
Title: Device for coupling together pipes made of plastic material, or for the fitting of end members to such pipes
IPC: F16L15/00
Filed: 1956-06-25
Abstract: 793,224. Pipe coupling devices. SOC. NOBEL FRANCAISE. June 25, 1956 [June 27, 1955], No. 19644/56. Class 99(1). A device for coupling together pipes made of plastic material or for the fitting of end members to such pipes comprises an outer non-compressible ring 1 the inner face of which comprises cavities 4 and an inner non-compressible ring 2 of small thickness the inside diameter being equal to the inside diameter of the pipe and the outer face of the ring comprising a cylindrical portion and a slightly tapered portion 5 at one of its ends the end of the plastic material pipe being compressed between the inner face of the outer ring and the outer face of the inner ring. The device can be adapted to the end of a pipe made of polythene. The outer ring may have a flange at its outer end or may be constructed as shown in either of Figs. 11, 14 or 17. Fig. 5 shows the method of applying the inner ring. The invention may be applied to coupling two pipes or apparatus of the same or different diameters or to elbow bend connections. The invention is also applicable to T-pieces, cross-pieces and headers of a liquid circulation system.
Patent GB-592444-A (GB)
Title: Improvements in and relating to work holders for lapping devices
IPC: B24B41/06
Filed: 1944-10-12
Abstract: 592,444. Work holders for lapping gauges. TRIGGS, W. W. (Niles-Bement- Pond Co.). Oct. 12, 1944, No. 19700. [Class 60] A gauge holder for gauge-lapping machines comprises in combination a body member, means to support an adjustable gauge, for lapping, in position on said holder, and means rotatably and slidably mounted in said body member for actuating engagement with sizeadjusting means within said gauge. The body member 10 has a recess to receive the ring gauge W to be lapped, and has locating studs engaging openings of the gauge. Members 13 have their inner ends shaped to enter the slots in the heads of the screws and lock nut provided on the gauge for adjustment of its size. The members 13 can be rotated by handles 16 at their outer ends, to effect adjustment of the size of the gauge while it is in the holder, during the progress of the lapping operation. The members 13 are urged into engaging position by springs 18, and can be retracted, to permit insertion or removal of the gauge, by levers 22 pivoted on the body member 10. During lapping, the holder is oscillated, by means of radial arm 23, in a lapping machine, as described in co-pending Specification 592,445.
Patent GB-1207466-A (GB)
Title: Device for interconnecting tubular members
IPC: F23L17/12
Filed: 1969-04-17
Abstract: 1,207,466. Tube connectors. WALLACEMURRAY CORP. 17 April, 1969 [21 June, 1968], No. 19729/69. Heading F2G. A connector 10 particularly suitable for interconnecting prefabricated sheet metal tubular structures comprises a sheet of metal or other suitable form sustaining material bent to form a tubular sleeve with end portions 24, 26 of the sheet overlapping circumferentially of the sleeve, means, such as a pin or rivet 28, being provided for pivotally connecting together said overlapping end portions at one point along the length of the sleeve, the overlapping portions being left free for relative sliding movement at at least a first end of the sleeve, means, such as a screw 32, spaced longitudinally from said connecting means being provided for applying a force tending to push said overlapping end portion apart, whereby said sleeve is caused to increase its circumference at said first end where said end portions are left free for relative sliding movement. As shown, the connector has a bead 30 or, alternatively, may have circumferentially spaced dimples. In modifications, (a) the screw and a nut thereon engages outwardly and inwardly extending portions of the portions 24, 26, and (b) the screw engages radially extending tabs integral with the upper edges of the portions 24, 26.