baber/WOPTO huggingface dataset:
Patent GB-217985-A (GB)
Title: Improvements in and relating to appliances for feeding poultry, and other birds
IPC: A01K39/014
Filed: 1923-03-26
Abstract: 217,985. Crosland, E. March 26, 1923. Feeding - appliances for animals.-A poultry &c. feeding - appliance comprises a hopper a having overhanging sides f beneath which are arranged troughs c supplied with food from the hopper. When the troughs are empty the birds have access to the fcod in the hopper outlet and cause more food to flow from the hopper. Covers g enclose the troughs and are held by friction of a ring h thereon with the flange e of the troughs. Upon the lid j of the hopper is arranged a vane k pivoted horizontally so as to turn and dislodge a bird attempting to perch thereon. Reference has been directed by the Comptroller to Specification 21619/91.
Patent GB-472055-A (GB)
Title: An improved method of producing integral wrought valve bodies
IPC: B21K1/24
Filed: 1936-03-23
Abstract: 472,055. Making valves and cocks. CORNELL, jun., E. S. March 23, 1936, No. 8642. Convention date, March 22, 1935. [Classes 83 (ii) and 83 (iv)] Forging-dies.-Rolates to the production of integral wrought valve bodies particularly of the inverted-T-type shown in Fig. 1, and consists in a method of cold working a solid blank of copper or copper alloy in dies whereby the various limbs are progressively formed both internally and externally, leaving an internal part for the valve seat. A solid blank which may be cylindrical, is placed in a cavity of a die 22, Fig. 3, and pressure applied by punches 23, 24 shaped as shown. The punches 23 are replaced by punches with less pointed ends, and reamers in turn shape the end passages. After further shaping in dies, drilling takes place horizontally through the central partition at the top and bottom thereof. The drilled holes are enlarged by punches 31a, 31b, Fig. 8, to the form of segmental apertures. Successive drilling, shaping, reamering, and screw threading operations complete the valve body. Specifications 423,334 and 472,054 are referred to.
Patent GB-784511-A (GB)
Title: Glass fibre reinforced sheet or mat
IPC: E04D5/02
Filed: 1954-03-25
Abstract: 784,511. Strengthening edges of sheet material. SCHULLER, W. H. W. Jan. 4, 1955 [March 25, 1954], No. 8704/54. Class 42 (1). A bonded glass fibre mat is reinforced at the edges only by slivers or rovings of glass fibre disposed in the surface or surfaces of the mat. The terms " sliver " and " roving " connate assemblies of staple fibres or continuous filaments with light twist or no twist. As shown, a glass fibre mat 1, formed on a conveyer 2 as described in Specification 686,564, is drawn through a binder bath 5 containing an aqueous solution or emulsion of thermo-setting resin and reinforcing slivers from spools 9 are applied by a guide member 10, so as to lie closely spaced apart adjacent each edge of the mat. Rollers 7, 8 cause the binder to penetrate the reinforcement and make it adhere to the surface of the mat which then passes on a belt 13 through a drier. The reinforcement may be applied on one or both edges of the mat. The finished mat may be impregnated with bitumen or the like to form a roofing felt or board. Specifications 686,573 and 702,846 also are referred to.
Patent GB-1203728-A (GB)
Title: Worm-rack transmission with hydrostatic tooth bearings
IPC: F16H55/26
Filed: 1968-02-22
Abstract: 1,203,728. Machine tool details. INGERSOLL MILLING MACHINE CO. 22 Feb., 1968 [27 Feb., 1967; 22 May, 1967], No. 8731/68. Heading B3B. [Also in Division F2] A rack and worm transmission 14, 20 with hydrostatic fluid bearings 37 between opposed areas of rack-teeth 17 and the worm-thread 19 comprises fluid-supply passages 45 in the rack communicating with ports 42 containing restrictor valves opening on the face of the side wall 41, and a fluid distributer 40, one wall 43 of which is in sliding hydrostatic engagement with the wall 41 and contains fluid-supply ports 44. The worm is shorter than the rack, and the disposition of the ports 44 is limited to a length of the wall 43 which is shorter than the worm (Fig. 2, not shown); thus, fluid is distributed only to those rack-teeth actually engaging the worm. The fluid-pressure developed in the chambers 64 is used to lessen the clearance in the fluid bearing between the walls 41, 43 by means of pistons 67 acting against a thrust-plate 48. Gear teeth 29 may be cut in the periphery of the worm-thread; these mesh with the teeth of a spiral gear (31) (Fig. 4, not shown) disposed beneath the worm and provided with a suitable power source.  Reference has been directed by the Comptroller to Specification 1,112,380.
Patent GB-736687-A (GB)
Title: Apparatus for winding clocks, especially church and other large clocks
IPC: G04C1/08
Filed: 1952-04-05
Abstract: 736,687. Clocks. JAMES, F. May 12, 1953 [April 5, 1952], No. 8762/52. Class 139. Apparatus for periodically winding weightdriven clocks comprises an electric motor and an epicyclic gear driven thereby and controlled by a centrifugal governor so that upon operation of the motor the drive from the motor is transmitted to the winding train and upon stopping of the motor the weight drives the clock. The time train includes an epicyclic gear D<SP>1</SP>, Figs. 1 and 2, the planet carrier of which normally rotates. As the weight drives the time train a nut moves along a screwed shaft S until eventually it moves a member W to actuate a mercury switch R in the circuit of the electric motor A. The motor A starts to rotate and a centrifugal governor J driven thereby moves a lever K' into locking engagement with the planet carrier of the epicyclic gear D<SP>1</SP> so that the motor A drives the winding train through a V-belt B, the worm C and the epicyclic gear D<SP>1</SP> to wind up the weight. A weighted pawl Q controlled by a centrifugal governor L drives the time train during winding of the weight. A similar governor controlled epicyclic gear D<SP>2</SP> is provided in the chiming train to control winding of the chiming train weight.
Patent GB-1156466-A (GB)
Title: Sintered Molybdenum Disilicide
IPC: C04B35/58
Filed: 1967-02-23
Abstract: 1,156,466. Sintered molybdenum disilicide. SIGRI ELECTROGRAPHIT G.m.b.H. 23 Feb., 1967 [23 Feb., 1966], No. 8769/67. Heading C1A. [Also in Division C7] Sintered MoSi 2  containing not more than 5% Mo 5 Si 3  and not more than 1% oxides, and which has a porosity less than 5% is made by cold-pressing a MoSi 2  powder with a grain size of 4-40 microns and a Si content of not less than 36À5% and an oxygen content of not more than 1%, the remainder being Mo and then sintering the compact. The MoSi powder may be isostatically pressed or mixed with polyvinyl alcohol and water and extruded. Sintering is carried out in argon, hydrogen or in atmosphere containing Si vapour, e.g. at 1600‹ or 1700‹ C.
Patent GB-1337369-A (GB)
Title: Sectional control valves
IPC: F15B13/00
Filed: 1972-02-25
Abstract: 1337369 Valves COMMERCIAL SHEARING & STAMPING CO 25 Feb 1972 [20 May 1971] 8810/72 Heading F2V Each of a number of control sections arranged in a bank between inlet and outlet manifolds has a groove 30 on each abutment face to convey leakage fluid from supply ports 36, 37 to exhaust ports 28, 29, the various ports being surrounded by an 0-ring 38 intersecting the groove 30. The supply ports connect via inclined passages 34, 35 with chambers 24, 25 connectible alternately to work ports 26, 27 via passages 22a, 22b and 23a, 23b in spool 21, the non-pressurized work port being connected to exhaust at 28 or 29.
Patent GB-1426094-A (GB)
Title: Pneumatic device for selectively feeding the threads in a  knitting machine
IPC: D04B15/58
Filed: 1973-02-22
Abstract: 1426094 Knitting machines; yarn feed MEC-MOR SpA 22 Feb 1973 [28 Feb 1972] 8837/73 Heading D1C A pneumatic yarn feed device in a circular knitting machine comprises several passages in a common block with one yarn in each passage. Control means hold back all but one yarn and the selected yarn is blown so that its end protrudes and is taken by the needles as the device moves past them. In Fig. 5 air from a common header duct 11 blows the yarn through the passage 8, while the other yarns (Figure 6) are clamped by electromagnetic disc brakes 24, and partially withdrawn from their passages 8 by electromagnetically operated levers 17. In another embodiment (Figures 7, 8, not shown) a disc brake clamps the thread while a jet of air withdraws the free end of the yarn by diverting it up a side passage (26). In a further embodiment (Figures 9, 10, not shown) a pivoted lever (117) withdraws the yarn from its passage, two arms on the end of the lever forming two loops of yarn round a fixed stop (115). In each embodiment the yarn is changed at a gap in the needles (Fig. 11, not shown) and a knife cuts the yarn before it is withdrawn.
Patent GB-327838-A (GB)
Title: Improvements in and relating to casings for vacuum-jacketed bottles and like vessels
IPC: A47J41/02
Filed: 1929-03-19
Abstract: 327,838. Groves, W. W., American Thermos Bottle Co.). March 19, 1929. Casings. - The outer protective casing of a vacuum-jacketed glass bottle, jug, food-jar &c. is composed of a moulded phenol-aldehyde condensation product, such as bakelite, which may be suitably coloured before moulding. For non- cylindrical vessels, such as the vessel 23 shown, the casing may be formed in sections 10, 12, 13 having co-operating screw threads 16, 17 and 18, 21 moulded in the material. The sections may be secured together by an ordinary threaded metal ring, but preferably the member shown in Fig. 2 is used. It consists of a brass or other metal strip 24 with flanged edges 25, 26, the ends of the strip being connected by a riveted &c. tongue 27 to form a ring with the flanges offset so as to form a single screw thread. This member is screwed into the threads of one section before the other section is threaded on to it. The top section 13 has an inturned flange 20 against which the mouth 22 of the vessel is forced upwards to make a tight joint by a cushioning pad 36 carried by a screwed plug 31 threaded into the bottom of the lowest section of the casing. In the case of a jug, a lip 19 is moulded in the top section, and a handle 38 of metal or of the same material as the casing is attached to the middle section by bolts 39. The sections may have internal and external moulded threads for direct engagement, instead of by a connecting ring. For straight walled vessels the casing may be in one piece.
Patent GB-107248-A (GB)
Title: Improvements in Ignition Plugs for Internal-combustion Engines.
Inventor: KENNEDY-MCGREGOR JOHN ALEXANDE
IPC: H01T13/16
Filed: 1916-06-24
Abstract: 107,248. McGregor, J. A. Kennedy-, and Hodgkinson, E. H. June 24, 1916. Sparking - plugs. - The outer part of the insulator a is hollow to promote the cooling of the electrode. A split ring C is seated partly in the insulator and partly in the casing. The electrode h is centred by a perforated metal disk g.
Patent GB-592581-A (GB)
Title: Television signal amplifier
IPC: H04N5/20
Filed: 1944-05-10
Abstract: 592,581. Television signal amplifiers. FARNSWORTH TELEVISION & RADIO CORPORATION. May 10, 1944, No. 8930. Convention date, March 29, 1943. [Classes 40 (iii) and 40 (v)] An amplifier for television signals, for affording gamma correction and for separating synchronizing signals from video signals comprises a valve 15 which operates with negative feedback by virtue of resistance 17 common to the control grid and cathode circuits of the valve and with regenerative feedback by virtue of a connection through adjustable resistance 18 between the anode and the cathode of the valve. The signals are applied in the input of the tube with such a bias that the cut-off occurs at the correct level for separation. This bias is varied automatically in accordance with the signal strength due to the D.C. connection through 18 between the anode and cathode of the valve, so that variation in signal strength is corrected for. The regenerative feedback increases as the input signals become more positive so that the net feedback voltage varies non-linearly with the input voltage and the output signals are expanded, thus giving enhanced pulses where the valve is used for separating synchronizing signals or giving gamma correction in the video signals where used as a video signal amplifier as shown..
Patent GB-609797-A (GB)
Title: Improvements in or relating to the production of artificial films
IPC: B65D65/38
Filed: 1946-03-22
Abstract: A synthetic linear polymeric ester, obtained by heating one or more glycols of the formula HO.(CH2)n.OH, where n is an integer greater than 1 but not greater than 10, with terephthalic acid or an ester-forming derivative thereof, is melted and the molten polymer is formed into a thin layer which is rapidly cooled to form a solid film.  The film may be molecularly oriented longitudinally or laterally by drawing, rolling, stamping or similar operation. Ethylene, trimethylene, tetramethylene, hexamethylene or decamethylene glycol may be esterified with terephthalic acid or its aliphatic, cycloaliphatic, or aryl esters, or its acid halides, or ammonium or amine salts.  The molten polymer may be cooled by air, water, or other inert fluid, or by a high melting metal surface. Films may be formed by pouring the molten polymer on to a flat metal tray and cooling by means of air.  The polymer may be extruded through a slot orifice and the film may be cooled on extrusion by jets of cold inert gas, immersion in an inert liquid, or by contact with a metal surface which is itself cooled by jets of a cold fluid or by immersion in a liquid.  The polymer may be extruded in the form of a large diameter tube with thin walls and the tube may be slit and rolled out to form a sheet.  The films may be stretched after extrusion while they are being quenched.  After quenching, the films are transparent.  They may be rendered opaque by heating so as to induce crystallization.  They may be drawn, rolled, or stamped, after quenching.  The shrinkability may be reduced by subjecting the films to a temperature higher than the temperature at which they have been drawn, and while they are under tension.  In an example, polyethylene terephthalate is heated in nitrogen to 285 DEG  C. and the molten polymer is forced through a filter pack of sand and stainless steel gauze, and through a slot orifice.  The ribbon of molten polymer is passed into a quenching bath of cold water through pinch rolls which stretch the film and pass it to a winding reel.  The film is then passed to a stretching machine consisting of two pairs of pinch rolls, take-off reel and winding reel.  The apparatus is enclosed in a mineral oil bath heated to 70 DEG  C.  The resiliency of the stretched film is increased by heating it under tension in mineral oil at 200 DEG  C.  The films have high tensile strength, high dielectric strength, high resistance to acids and organic liquids, good weathering properties, and high resistance to attack by insects and bacteria.  They may be used for wrapping material, insulating material, clothing and curtains. A drawn film which has not been heat set may be wrapped round an article, the edges may be heat sealed, and then the closed package may be shrunk on to the wrapped article by heating.  The films may be produced in tubular form. Specifications 542,509, 567,358 and 578,079 are referred to.
Patent GB-826239-A (GB)
Title: Process for purifying terephthalic acid which contains para-toluic acid
IPC: C07C51/42
Filed: 1956-03-22
Abstract: In a process for purifying terephthalic acid which contains para-toluic acid the mixture is treated with acetonitrile to dissolve the paratoluic acid and the resulting solution is separated from the undissolved terephthalic acid.  Elevated temperature and pressure may be employed and the para-toluic acid may be isolated from the acetonitrile solution.  Examples are furnished.  Specification 623,836 is referred to.
Patent GB-289245-A (GB)
Title: Improvements relating to gun mountings for flying machines
IPC: B64D7/02
Filed: 1927-04-01
Abstract: 289,245. Saunders, S. E., and Knowler, H. April 1, 1927. Mountings for use on aircraft.-An aircraft gun mounting c of the ring type is displaceable from the cockpit opening b to permit of the use of the cockpit for other purposes. In the form shown, the ring mounting c is turned down about a pivot f on the, hull, but the ring mounting may be displaced on rails attached to the deck a'.
Patent GB-280425-A (GB)
Title: Improvements in devices for winding cotton thread and the like
IPC: B65H63/08
Filed: 1927-04-02
Abstract: 280,425. Birkinshaw, F. W. April 2, 1927. Winding - machines; stop-motions. - In a device for winding cotton threads, a U- shaped bobbin cradle B, adjustable for various sizes of yarn packages, is carried on a substantially vertical arm A pivoted at its lower eud and slotted at about its centre for the passage of a notched catch-lever G. The lever G is pivoted to a setting-lever L and is held in contact with a pin K by a spring H, the central disposition of the pin K ensuring an even pressure between the package C and the drum F and the lever G serving to remove the package from the drum on completion of winding.
Patent GB-590141-A (GB)
Title: Improvements in and relating to variable pitch fans, axial flow compressors and the like
IPC: F04D29/36
Filed: 1945-04-13
Abstract: 590,141. Axial - flow compressors. POWER JETS (RESEARCH & DEVELOPMENT), Ltd., and BRAME, E. April 13, 1945, No. 9326. [Class 110 (iii)] Variable-pitch blades are mounted in the rotor 1 of an axial-flow compressor by bearing surfaces 3a which do not take the radial thrust due to centrifugal force of the blades. The thrust is taken by torsionally flexible ties 4 anchored to a central hub 6. The ties 4 may be single or laminated strips or cables. As shown, a single strip 4 is secured in a slot in the blade root 3 by rivets 5 and in a slot 7 in the hub 6 by an end which is turned over a pin 8 and secured by rivets 9 accommodated in keyhole parts of the slot 7. Each blade is provided with a lever 13 splined to the inner end of the blade root and carrying a pin which enters a groove 11 in an axially adjustable ring 10.
Patent GB-1026080-A (GB)
Title: Articulated cage for rolling contact bearings
IPC: F16C33/50
Filed: 1965-03-05
Abstract: 1,026,080. Bearings. EISENWERKE ROTHE ERDE G.m.b.H. March 5, 1965 [March 17, 1964], No. 9478/65. Heading F2A. An articulated cage for ball bearings comprises a number of cage-forming members 1, Fig. 1, (not shown) each of which has a transverse portion 2 with one side thereof having an abutment 8 in engagement with a ball 10 and another side thereof having spaced-apart abutments 12, 13 in engagement with an adjoining ball 10, the cage thus providing a three-point bearing contact for each ball 10. The member 1 is provided with interlocking recesses 3 and projections 4, sloping surfaces 6, 7 being formed in front of the recesses 3 and projections 4 respectively to facilitate the bending-open of arms 5 of the member 1 when the members 1 are being connected together. In an articulated cage for roller bearings, the cage-forming members 1, Fig. 4 (not shown) each has a transverse portion 2 with one side thereof having an abutment 16 in engagement with a roller 15 and another side thereof having spaced-apart projections 17, 18 in engagement with an adjoining roller 15. In a modification, cage-forming members 19, Figs. 7 and 8 (not shown) have T-shape grooves 21 formed therein which receive projections 22 of an interlocking member 19.
Patent GB-753893-A (GB)
Title: Improvements in or relating to gyroscope systems for use in air navigation
IPC: G01C19/44
Filed: 1954-04-01
Abstract: 753,893. Electric indicating systems. SVENSKA AKTIEBOLAGET GASACCUMULATOR. April 1, 1954 [Oct. 26, 1953], No. 9573/54. Class 40(1) An aircraft artificial-horizon comprises a gimbal mounted, heavy balanced sphere, each of its gimbal shafts being driven through a cynchro-system by the corresponding gimbal shafts of a master (central) gyro. The indicator may be combined with a compass repeater and a rate of turn indicator, the compass repeater being set by a remote induction compass stabilized by the central gyro, and the rate of turn indication being derived from the compass repeater through an eddy current device. Artificial horizon, Figs. 4, 5, 6. A hollow tungsten sphere 32 is fixed to a shaft 35 rotatably mounted by ball bearings in a gimbal ring 36, Fig. 4, carried by a shaft 37 rotatable in the casing 40, which has a glass cover 41 bearing the usual indicator 42 against which the equator line of the sphere is viewed for indicating pitch and bank. The sphere is rotated about a sleeve 52 fixed to the gimbal 36 by a synchro-receiver 53, 58 disposed inside the sphere which, when inoperative is mechanically unbalanced so as to be self-stabilizing. When operative, a magnet 64 inside the sphere is energized to attract its armature 65 and so balance the sphere. A radially movable counterpoise 67, and, if desired, a further counterpoise adjustable perpendicularly to the movements of the armature 65 and counterpoise 67 is/are provided for adjusting balance. Oscillations of the sphere about the sleeve 52 are prevented by a copper eddy current braking ring 71 and cooperating permanent magnet 69. The shaft 37 which is driven by a further synchro-receiver (Fig. 3, not shown), is damped in a similar manner by means of known form of damper disc 72 rotatably mounted thereon. The synchro-systems are energized with three phase current. Compass system Figs. 5, 7. The induction compass is gimbal mounted and vertically stabilized by driving its gimbal shafts through synchros from the corresponding gimbal shafts of the central gyro. It consists of two known compass units disposed with their respective Z-shaped armatures 80, 90 and their stator poles 83, 84 in quadrature. The outputs of the induction coils 82, 91 of the two units are amplified and rectified at 85, 92, respectively, and fed to a motor 87 arranged to rotate the statically balanced compass casing 99 through gearing until the two compass units give equal outputs. The motor shaft is thus positioned according to the magnetic bearing of the aircraft and through a synchro-system drives a graduated drum 122, Fig. 5, to indicate heading. The indicator also comprises signal lamps 125, 126 energized through relays when the three phase supply to the various synchros is switched on. A further drum indicator 129 is mounted concentrically above the drum 122 and is driven thereby through an eddy current drag coupling in opposition to a restoring spring, so that the drum 129 indicates rate of turn.