baber/WOPTO huggingface dataset:
Patent GB-912759-A (GB)
Title: Thrust applying mechanism
Inventor: LEACH EDWARD BLACKWELL
IPC: F16H35/10
Filed: 1959-10-27
Abstract: 912,759. Screw-and-nut gearing; step-bystep mechanisms. AUDCO Ltd. Oct. 14, 1960 [Oct. 27, 1959], No. 36345/59. Class 80 (3). [Also in Group XXIX] In a pneumatic or hydraulic system for imparting, automatically according to load, either a continuous or a step-by-step axial movement to a non-rotatable screw 12 operating a gate valve (not shown), the screw is moved either by rotation of a nut 14 coupled to gears 15, 18 driven through a fluid coupling 20, Fig. 3, or, if the load exceeds a predetermined amount, by limited and, if necessary, repeated axial movement of the nut 14 in its housing 17 by means of one or other of two annular pistons 22 engaging the ends of the nut, the axial movements of the nut being followed by rotary return movements and the pistons being actuated by the fluid pressure developed in the coupling 20 when rotation of its output gear 18 is resisted. The nut 14 is slidably keyed in a gear 15 driven by a worm 18, or alternatively by a pinion, on the output shaft of a gear pump coupling 20 having an input shaft 21, driven by hand or by electric motor, and two fluid output conduits 25. The two conduits 25 lead, respectively, to upper and lower valve pairs 24, 29 controlling the respective annular pistons 22. Normally, the valves 24 are so positioned by springs 28 that the two piston chambers 23 are connected through passages 26, 27 to a reservoir so that no force is exerted by the pistons on the nut 14. Rotation of shaft 21 in one or other direction then rotates worm 18 and nut 14 to move the screw 12, the nut reacting against the housing 17. Should rotation of worm 18 in one or other direction be resisted, the coupling 20 develops a pressure in one or other conduit 25 which shifts the upper or lower valve 24 so that the corresponding chamber 23 is connected to the pressure conduit 25 and causes joint axial movement of the nut and screw. The axial movement continues either (a) until the resistance is sufficiently diminished for the rotary drive to be effected, in which case the nut is screwed back to its normal position, the pressure in conduit 25 dropping and the valve 24 being returned by its spring 28, or (b) until the piston 22 reaches the end of its permitted stroke, whereupon the valve 29, which has been caused by its spring 30 to follow the piston, connects the pressure conduit 25 to the adjacent end of the valve 24 so that the latter is returned by its spring 28 to re-connect chamber 23 with the reservoir passage 27 and allow nut 14 to be rotated (under no load) back to its normal position. If movement of screw 12 is still resisted the sequence is repeated so that a step-by-step axial movement is imparted to the screw by alternate axial and rotary movements of the nut 14. A valve 32, Fig. 3, ensures that for either direction of rotation of shaft 21 the suction side of coupling 20 is connected to the reservoir by a passage 34. Pressure operated cut-out switches 35, Fig. 2, prevent the pump 20 developing excessive pressures.
Patent GB-893067-A (GB)
Title: Chlorination of metal-bearing materials
IPC: C22B1/08
Filed: 1960-10-24
Abstract: <PICT:0893067/III/1> In the production of metal chlorides (e.g. chlorides of Fe, Ti, Sn, Al, Zr, V, Mo, Nb and Ta) by treating metal-bearing materials with chlorine and coke at elevated temperatures, a plurality of chlorine feed pipes point inwardly and downwardly towards the bottom of the furnace shell and the ends of the pipes are spaced apart from the bottom of the shell, from its side walls and from each other.  As shown in Fig. 3, a furnace 12 is provided with chlorine feed pipes having open ends 32, the zones of turbulence produced thereby being indicated by dotted lines 44.  The operation of the apparatus is described using ilmenite as the metal-bearing material.  The interior of the furnace is heated to the reaction temperature (700 DEG -1200 DEG C.) by feeding carbon, coal or coke into the furnace, igniting it and introducing air through the chlorine feed pipes.  Finely divided ilmenite and coke are fed through shoot 18 to form a bed in the furnace, agitation of the bed being maintained by continuously introducing air.  The air supply is shut off when the bed is sufficiently hot, chlorine is introduced through the feed pipes and rising columns of ilmenite and carbon are formed in the upwardly flowing chlorine stream. Unreacted ilmenite and carbon which erupts at the top of the columns flow downwards in the bed between the upwardly flowing material and are picked up by the chlorine stream when they reach the vicinity of any of the chlorine feed pipes and rise up with it; thus there is a continuous circulation of ilmenite and carbon up and down the bed.  The product gases-titanium tetrachloride, iron chloride and carbon monoxide and dioxide are withdrawn at the upper end of the furnace.  Reference is also made to chlorinating zircon (to produce ZrCl4 and SiCl4) and tantalite or columbite (to produce chlorides or oxychlorides).
Patent GB-1353718-A (GB)
Title: Launching game
IPC: A63F9/02
Filed: 1972-08-03
Abstract: 1353718 Table game M I GLASS [trading as MARVIN GLASS & ASSOCIATES] 3 Aug 1972 [9 Aug 1971] 36377/72 Heading A6H A game comprises a swingable striker element 60 for launching a playing piece 40 towards a post 28 so as to straddle it. The post extends from a roughened surface 26 to simulate a horseshoe pit. The striker ball 60 is supported on a strand 58 having beads thereon engaging a recess in a bracket 48 to allow adjustment of the path of the ball.
Patent GB-1361255-A (GB)
Title: Method for preparing alternaing copolymers
IPC: C08F4/28
Filed: 1971-08-03
Abstract: 1361255 Preparation of alternating copolymers in aqueous media GAYLORD RESEARCH INSTITUTE 3 Aug 1971 [25 Aug 1970] 36429/71 Heading C3P Alternating copolymers of an unsaturated hydrocarbon electron donating monomer and an unsaturated electron accepting monomer containing a pendant carbonyl, carboxylate, carboxamide (or the thio analogues thereof) or nitrile group, are prepared by polymerization in an aqueous medium using a Friedel-Crafts catalyst and a water-soluble free radical initiator. Examples of the first monomer are styrene, alpha methyl styrene, other substituted styrenes, butadiene, isoprene, 1,3-cyclooctadiene, ethylene and propylene. Examples of the second monomer are acrylonitrile and acrylic and methacrylic esters and amides. Preferred Friedel-Crafts catalysts are metal halides such as ZnCl 2 , MgCl 2  and NiCl 2 . Persulphates and redox systems are preferred initiators. In the specific examples a styrene/acrylonitrile and an isoprene/ acrylonitrile copolymer are prepared in aqueous media using ZnCl 2  (F.C. catalyst) and potassium persulphate. Also two more styrene/acrylonitrile alternating copolymers are prepared using ammonium persulphate and MgCl 2  or NiCl 2 , and a further one utilizes ZnCl 2  and a potassium persulphate/sodium metabisulphite redox system.
Patent GB-1081058-A (GB)
Title: Improvements in or relating to superconducting coils
Inventor: CORNISH DONALD NELSON
IPC: H01F6/06
Filed: 1965-08-25
Abstract: 1,081,058. Superconductors; superconducting coils. UNITED KINGDOM ATOMIC ENERGY AUTHORITY. July 27, 1966 [Aug. 25, 1965], No. 36.467/65. Headings H1K and H1P. The layers of a multilayer superconducting coil are spaced apart by a mesh which offers a lower impedance to the flow of cryogenic liquid parallel to the axis of the coil than to transverse flow. The mesh, which may consist of nylon, polyethylene terephthalate or metals such as stainless steel, preferably consists of thick filaments running parallel to the coil axis interwoven with thinner transverse stands. The superconductor wire, which is insulated by helically wound polyethylene terephthalate, is insulated from annular copper end cheeks by plastics rings bound to the cheeks by nylon thread.
Patent GB-342825-A (GB)
Title: Improvements in or relating to machines for preshaping tapes for application to cores
IPC: H01B13/26
Filed: 1929-11-29
Abstract: 342,825. Covering cores by winding. WESTERN ELECTRIC CO., Ltd., Bush House, Aldwych, London.- (Bell Telephone Laboratories, Inc.; 463, West Street, New York, U.S.A.). Nov. 29, 1929, No. 36643. [Class 109.] A machine for pre-shaping and laying metal tapes upon cores, particularly for laying surrounds upon the central conductor, or a return conductor upon the insulated core, of a submarine cable, comprises a tubular shaft 10 driven from a pulley 12 and formed with a circular head 13 carrying brackets 14 which are fitted with spools 15 for storing the tapes. Brackets 17, carrying rollers 18, 19, are fitted to a face plate 16 which is mounted on the shaft 10. The tapes are fed through holes 31 in the plate 16. The rollers 18, 19 shape the tapes to the curvature of the core and may be of the form shown in Fig. 2. For heavy-section tapes with right-angled corners, the rollers of Fig. 3 may be used, the roller 19 having bevelled flanges 21 which are embraced by flanges 22 on the roller 18. A split-tube or other extension 111 on the shaft 10 carries a guide die 23 having shaped channels for the tapes. A polishing or burnishing device 24 is mounted on a pillar 25, and comprises grooved members 26, 27 which are pressed together by springs 28 and nuts 29 screwed on bolts 30. For very accurate spacing of the tapes on the core the device 24 is placed close to the guide 23. In operation the tapes are fed from the spools 15, and the core drawn through the machine by a capstan or winch, the head 13, plate 16 and guide 23 being revolved by the drive pulley 12 at a rate depending on the desired lay of the tapes on the core. Specification 342,647 is referred to.
Patent GB-1161118-A (GB)
Title: Improvements in Teat Cup Liners for Milking Apparatus.
Inventor: LANGTON WILLIAM EZRA
IPC: A01J5/08
Filed: 1965-08-26
Abstract: 1,161,118. Teat cup liners. W. E. LANGTON. 25 Nov., 1966 [26 Aug., 1965], No. 36712/65. Heading A1M. A teat cup liner comprises a hood 10 having a flange 14 shaped to provide parts 15, 16 to overlie the inner and outer cylindrical surfaces of the teat cup shell 17, and a barrel 11 connected laterally to the inner part 15 of the flange which part is extended below the connection with the barrel to define an annular rib 23 adapted to seat on a shouder 28 in the teat cup shell. The undersurface of rib 23 is of semi-circular cross-section and the rib is connected to the upper end 20 of the barrel by circumferentially spaced webs 25. A milk delivery tube is coupled to the liner by means of connector 26. The liner 11 has a downwardly convergent frusto-conical part 19 which blends into a cylindrical portion 22.
Patent GB-1034131-A (GB)
Title: Improvements in the production of embossed cellulose triacetate fabrics
Inventor: MADARAS GEORGE WILLIAM
IPC: D06Q1/08
Filed: 1961-10-17
Abstract: The wash resistance and stability of embossed cellulose triacetate fabrics are improved by embossing the fabric and then subjecting it to a dry heat treatment which produces substantially no heat setting effect on the fabric, i.e. its sticking temperature and safe ironing temperature are substantially unchanged.  The fabric may be heat treated at temperatures up to 170 DEG C.  Prior to embossing the fabric may be treated with an aqueous emulsion of a thermo plastic or heat hardenable acrylic or silicone resin, and then dried, embossed and heated, the heating bringing about hardening or curing of the polymer.  Suitable thermo plastic acrylic resins are polymers or copolymers containing at least 50% by weight of an ester, amide or nitrile of acrylic or methacrylic acid, e.g. polymers containing methylacrylate, ethyl acrylate, methyl methacrylate, butyl acrylate or 2-ethyl hexyl acrylate.  Suitable heat hardenable acrylic resins are copolymers of acrylic compounds which include monomers which provide reactive groups such as amide, amine, epoxy and hydroxy groups, e.g. methylol acrylamide, N-butoxymethacrylamide, 2-amino vinyl ether, ureido-vinyl ether and ureido-ethyl acrylate, and mixtures of normally thermoplastic acrylic polymers with thermosetting resins, e.g. melamine-or urea-formaldehyde resins.  The resin composition may also contain softeners for the cellulose triacetate fabric and catalysts, e.g. ammonium chloride.
Patent GB-889605-A (GB)
Title: Improvements relating to tools for unwrapping wrapped electrical connections
Inventor: BUTTERWORTH ARNOLD WILLIAM
IPC: H01R43/033
Filed: 1959-11-04
Abstract: 889,605. Unwinding wire from electric terminals. FERRANTI Ltd. Oct. 26, 1960 [Nov. 4, 1959], No. 37352/59. Class 83 (4). A tool for unwrapping wrapped electrical connections includes at least one tubular member having one end adapted to fit loosely over a wrapped electrical connection, said tubular member containing adjacent said one end a transverse slot and an access thereto from said one end of said tubular member such that when said tubular member is fitted over a wrapped connection a free end of said connection may pass by way of said access into said transverse slot, a closed end of which engages with said free end of said connection upon rotation of the tubular member in the appropriate direction for unwrapping said wrapped connection. A tubular member 3 carried by a handle 1 has a transverse slot 4 formed at its outer end, the slot having an access 5 to the end of the member 3, one wall 6 of the access 5 being formed as part of a turn of a helix. In operation the member 3 is placed over turns 8 of wire wrapping a terminal 7 and is turned so that a free end 9 of the wire passes into the slot 4. Further rotation causes the end of the slot 4 to bear on the free wire end 9 and unwrap the wire by causing the helix to expand. The slot may be T-shaped, the leg of the T forming the axis and the arm the transverse slot, or L-shaped. To unwrap wire joining and wrapped around two terminals a tool, Figs. 5, 6 and 7, including two tubular members 17, slotted at 18 and driven through gears 19 by an electric motor, is used. In operation the wire is cut between the terminals and the tubular member 17 placed thereover and rotated to unwrap the wire. To eject the unwrapped pieces of wire from the member 17 a trigger 32 is pulled to pivot a lever 33 to push a plate 29 forward against the action of springs 30. The plate 29 carries, rotatable thereon, outer sleeves 21, on the members 17, connected to inner sleeves 20 by pins 24 extending through diametrically opposed helical slots 23 in the members 17. The sleeves 20 and 21 thus move forward and rotate, an oblique face 22 on the sleeves 21 pushes the end of the wires from the slots 18 and the sleeves 20 push the unwrapped connections from the members 17.
Patent GB-1443041-A (GB)
Title: Safety locking mechanisms
IPC: A47C1/025
Filed: 1973-08-07
Abstract: 1443041 Safety locking mechanisms for backrests BROSE-VERWALTUNGS GmbH 7 Aug 1973 [7 Aug 1972] 37431/73 Heading A4J [Also in Division E2]  A safety locking mechanism which locks the backrest 2 of a vehicle seat against movement on sudden acceleration or deceleration of the vehicle comprises a pendulum 28 which deflects on acceleration or deceleration of the vehicle causing a pawl 22 to engage a ratchet wheel 20 which prevents rotation of a pinion 5 forming part of a rack and pinion mechanism for adjusting the rake of the backrest. The backrest is held in the adjusted position by a wedge 13 engaging a gear-wheel fixed to a rotatable shaft 6 to which the pinion and ratchet-wheel are fixed, the wedge being moveable out of engagement with the gear-wheel by a hand lever which co-operates with a cam 11 coupled to the wedge via a pin 12. When the wedge is disengaged and the vehicle is stationary, sudden rapid movement of the backrest is prevented by a latch 33 pivotally connected to the seat rest 1 and provided with teeth 35, 36 co-operating with the teeth of the ratchet wheel such that, during normal adjustment of the backrest, tooth 35 is pivoted out of engagement with the wheel by means of tooth 36 co-operating with the ratchet teeth and such that, during rapid movement of the backrest, tooth 35 remains engaged with the associated ratchet teeth as a result of the inertia of the latch 33. In a modification, Figs. 4 and 5 (not shown) two coaxial ratchet wheels 20 (20') which prevent movement of the backrest in opposite directions are provided, each ratchet wheel being associated with a pendulum 28, (28'), a pawl 40 (40') and a locking latch 33 (33'). In three further modifications, Figs. 6 and 7, 8 and 9, 10 and 11 (not shown), two pawls each associated with a pendulum are associated with a single ratchet wheel. The pendulum and pawls may be combined to form a single forked unit (66), Figs. 12 and 13 (not shown). In two further modifications, Figs. 14 and 15 and 16 and 17 (not shown) the gear-wheel which co-operates with the wedge forms the ratchet wheel.
Patent GB-830814-A (GB)
Title: Improvements in or relating to focusing lens mounts
IPC: G02B7/04
Filed: 1957-12-02
Abstract: 830,814. Focusing lens mounts. KODAK Ltd. Dec. 2, 1957 [Dec. 3, 1956], No. 37467/57. Class 97(1) In order to allow for variation in focal length of lenses produced according to a given specification, the focusing scale ot a lens mount has a series of marks which converge in the diameter of the lens axis and is, during assembly adjustable axially and circumferentially relative to the edge of a fixed ring carrying an index mark and partially overlying the scale so that the correct intercept of said edge on the scale can be obtained, said intercept corresponding to the actual focal length of the lens in the mount. As shown the lens mount includes a focusing ring 5 with knurled edge 6 and a focusing scale 7 partially overlaid by the edge of a fixed ring 3 having index mark 4. The marks on scale 7 converge the direction of the lens axis so that along line 30, 30<SP>1</SP>, Fig 3, they provide a focusing scale for a lens of focal length (F-D) and along line 31, 31<SP>1</SP> they provide a focusing scale for a lens of focal length (F + D), when F is the nominal focal length and D is the allowable variation. Thus, by moving scale 7 axially relatively to ring 3 it can be arranged that the edge of the latic interupts the scale along a line to provide a correct focusing scale for the lens actually in use. The actual intercept required may be obtained by focusing the lens successively for two different distances and adjusting scale 7 to match those distances or by measuring the actual focal length of the lens and determining the necessary axial adjustment of scale 7 from a chart and measuring it with an auxiliary scale. After adjustment, scale 7 is secured to focusing ring 5 as by screws 8.
Patent GB-1399823-A (GB)
Title: Joining metallic members
IPC: B23K35/00
Filed: 1971-08-11
Abstract: 1399823 Welding by pressure DEFENCE SECRETARY OF STATE FOR 13 Nov 1972 [11 Aug 1971] 37634/71 Heading B3R In joining metal members, the surfaces to be joined are cleaned, the surfaces are coated with a halogen or halide, the coated surfaces are placed in contact and the temperature of the surfaces is raised to 700-1000‹ C. without exceeding the melting point of either member to cause interdiffusion between the surfaces. In one example sheets of titanium are cleaned by electro-polishing and tri-nickel-aluminide is evaporated thereon under vacuum. Iodine dissolved in methanol is painted on the coated surfaces and then the sheets are placed in contact under 2 t.s.i. and heated in vacuo at 750‹ C. for 30 mins. Pure titanium and titanium alloys may be similarly joined as may dispersion strengthened nickel and nickel alloys although the banding temperature is 800‹ C. In another example sheets of niobium are cleaned mechanically, coated with tri-nickel-aluminide by evaporation, painted with iodine, assembled at 5 t.s.i. and heated at 700‹ C. The sheets are then heat treated in vacuo at 900‹ C. for 2 hours. Nickel-base alloys may be joined in the manufacture of hollow compressor blades for gas turbine aero engines. Chromium, cobalt, iron, niobium, molybdenum, zirconium, hafnium, tantalum and tungsten base alloys may be joined and with the omission of tri-nickelaluminide coatings nickel alloys and titanium alloys may be joined to niobium alloys. The halogen is said to form oxide and nitride inhibiting compounds when heated at 700‹ C. and above.
Patent GB-864481-A (GB)
Title: Improvements in or relating to thermally-operated valves
Inventor: SHERLOCK JOHN EDWARD
IPC: G05D23/12
Filed: 1957-12-03
Abstract: 864,481. Valves. BRITISH THERMOSTAT CO. Ltd. Feb. 12, 1959 [Dec. 3, 1957], No. 37687/57. Class 135. A thermally actuated safety valve for a liquid fuel burner comprises a bellows 2, Fig. 1, connected by a capillary tube 1 to a phial (not shown) located at the point where excess heat may occur. Upon expansion of the bellows 2 the rod 4 is depressed to overcome a toggle mechanism comprising blades 10a, 10b loaded by a spring member 10 and so close the valve member 5 on the seat 6. The toggle mechanism 10, 10a, 10b now holds the valve closed and reopening is effected by means of a tool or probe inserted through one or other of the tapped holes 11 to move the toggle mechanism to its other position. In a modification, Fig. 3, a lever 15 is attached to the blade 10b and co-operates with a pusher button 13 for moving the valve to the open position. The lever 15 also determines the position of a spring-loaded plunger 20 which acts on switch 17, 19 in the circuit of an alarm or indicating device.
Patent GB-1394975-A (GB)
Title: Photographic exposure control apparatus
IPC: G03B9/62
Filed: 1973-08-09
Abstract: 1394975 Cameras EASTMAN KODAK CO 9 Aug 1973 [9 Aug 1972] 37721/73 Heading, G2A A camera has an exposure control circuit which when the light intensity is average holds the shutter open for a photo-electrically determined period and when the light intensity is high closes the blades as soon as they open whereby the exposure period is mechanically determined. When the light intensity is low the exposure may be photoelectrically controlled or controlled by fixed resistor(s) switched in if flash is used. As shown, when a photo-cell 110 is illuminated by light of an average intensity a trigger circuit 104 is switched on and a low light indicator lamp 108 is not energized. On pressing the shutter release 60, a latch 50 releases an impeller 30 which strikes and opens a scissors-like shutter 12, 14. Movement of im-  peller 30 also operates a switch 52 which connects contacts RS and CD. Contacts RS energize an electromagnet 106 which holds an armature 45 to arrest impeller 30 and thereby hold the shutter open. Contacts CD initiate charging of a capacitor 118 through photo-cell 110. When charged capacitor 118 switches off trigger circuit 104 to deenergize electromagnet 106 and release impeller 30 whereby spring 26 closes the shutter. If the light intensity is high trigger circuit 104 is non- conductive so electromagnet 106 cannot be energized and spring 26 closes the shutter as soon as it has opened. If the light intensity is low, lamp 108 is switched on and the operator has the choice of making a photo-electrically controlled exposure or a flash exposure. In the latter case, a switch 53 is closed to switch in a fixed exposure time resistor 114. An additional resistor 116 may be switched in when the camera is focused on near objects.