baber/WOPTO huggingface dataset:
Patent GB-957756-A (GB)
Title: Improvements in or relating to transistor oscillator circuits
IPC: H02M3/338
Filed: 1961-12-15
Abstract: 957,756. Transistor oscillator circuits. GENERAL ELECTRIC CO. Ltd., and B. W. WEETMAN. Nov. 26, 1962 [Dec. 15, 1961], No. 45022/61. Heading H3T. [Also in Division H2] In order to protect against incorrect connecnection of the power supply in a transistor oscillator circuit of the kind wherein the emitter-collector path of a transistor is connected in series with one winding of an output transformer between two supply terminals and in which the base-emitter path of the transistor is connected in a closed path for D.C. and which includes a secondary winding of a feedback transformer, the base-emitter circuit has connected in it the emitter-collector path of a further transistor, the base of which is connected to such a point that in normal operation the further transistor is saturated and in abnormal operation when the supply is incorrectly connected the further transistor is cut off. The circuit of Fig. 3 shows an oscillator comprising transistor 1 connected with its emitter-collector path in series with primary winding 4 of output transformer 5 across supply terminals 2, 3, regenerative feedback being provided by secondary winding 8 and the transistor operating under Class C conditions due to capacitor 10 charging to bias the base of transistor 1 positive with respect to its emitter. In order to prevent damage to transis-. tor 1 if the polarity of battery 12 is reversed a further transistor 13 is convected as shown with its emitter-collector path in the emitter-base circuit of transistor 1. In normal operation of the circuit as shown in Fig. 3 transistor 13 is maintained in a saturated condition by means of the voltage developed across resistor 14 and has no effect on the operation of the oscillator. However if the polarity of battery 12 is reversed the voltage across resistor 14 is such as to maintain transistor 13 cut off, so that only a small voltage is developed between the electrode functioning as the emitter of transistor 1 and its base so that this transistor is biased nearly to cut off. The transistor oscillator may be a conventional push-pull arrangement or it may be of the type where a plurality of transistors are connected with their emitter-collector paths in series between a pair of supply terminals. The oscillator circuit may be arranged to form part of a circuit arrangement for operating a low pressure electric discharge lamp. Specifications 854,206 and 856,105 are referred to.
Patent GB-1070907-A (GB)
Title: Process for producing unsymmetrical dialkylhydrazines
IPC: B01J25/02
Filed: 1963-11-14
Abstract: Unsymmetrical dialkylhybrazines are prepared by the reduction of dialkylnitrosamines in the liquid phase with hydrogen at a hydrogen pressure of below 50 atmospheres gauge and at a temperature between - 20 DEG  C. and +50 DEG  C. in a reaction medium rendered alkaline by the addition of an alkali metal hydroxide in sufficient quantityto give the medium a content of 0.001 to 5.0 moles of dissolved hydroxide per dm.3 of reaction medium or made ionic by adding thereto soluble metallic salts or alkaline earth metal hydroxide in a quantity of 0.001 to 5.0 moles of dissolved electrolyte per dm.3 of reaction medium, the reduction being effected in the presence of Raney nickel catalyst obtained by an attack of an aqueos solution of caustic alkali on a Ni-Al alloy or alloys, the ratio by weight of catalyst to dialkylnitrosamine being between 0.001 and 1.0 and the ratio by weight of catalyst to reaction medium being between 0.001 and 0.50.  The catalyst may be dehydrogenated before use and if stored may be dipped into aqueous alkali metal hydroxide first prior to use.ALSO:Raney-Nickel catalyst is obtained by heating a Ni-Al alloy or alloys, preferably those which pass a sieve No. 26 AFNOR, at about 100 DEG C. with a 250 g/litre solution of sodium hydroxide in such quantity that the weight of dissolved sodium hydroxide is equal to the weight of alloys used, decanting, again treating the alloy or alloys with sodium hydroxide under identical conditions to the first treatment, discarding the sodium hydroxide solution and washing the alloy or alloys with water.  The catalyst so obtained may be dehydrogenated by contacting the catalyst metal with an anode resistant to alkaline electrolyte and traversing the catalyst metal with an electric current of below 500 milli amperes/cm2 (see Patent No. 1,010,187) or by immersing the catalyst in an electrolytic cell and traversing it by an electric current without it being in contact with either of the electrodes (see Patent No. 1,007,174).  Preferred Ni-Al alloys have the composition 40-55% by weight Ni; 60-38% Al, 0-1% Cu and 0-6% Fe and a specially preferred alloy has the composition 47.5% by weight Ni, 49% Al, 0.5% Cu and 3% Fe.  Catalysts which have been stored may be dipped into aqueous alkali metal hydroxide just prior to use.
Patent GB-1171898-A (GB)
Title: Differential Gearing Mechanism with Differential Pinion Bearing Pockets.
IPC: B60K17/08
Filed: 1968-09-24
Abstract: 1,171,898. Differential gears. FORD MOTOR CO. Ltd. 24 Sept., 1968 [3 Oct., 1967], No. 45220/68. Heading F2D. In a bevel differential gear the pinions 104, 106 are each housed in a cylindrical recess 112 in the carrier housing 84, each recess providing bearing surfaces engaging the flat annular outer surface 108 and the cylindrical surface formed by the external diameter of the pinion. The bearing surface area may be increased by providing a central boss 116 in each recess.
Patent GB-1524247-A (GB)
Title: Radial piston machine
IPC: F04B1/04
Filed: 1975-10-31
Abstract: 1524247 Reciprocating pumps and motors DANFOSS AS 31 Oct 1975 [2 Nov 1974] 45289/75 Heading F1A In a radial piston pump or motor comprising a rotary cylinder block 18 connected to a shaft 7 and having pistons 20 engaging a track ring 10 of adjustable eccentricity, a ported face 22 of the cylinder block is pressed into sealing engagement with a ported distributer value-member 5 by working pressure acting in chambers 33 formed between the cylinder block and a slide plate 21 which rotates with and has limited freedom of axial movement relative to the cylinder block and slidably engages a fixed plate 8 in the housing 2, an annular, corrugated spring 35 acting between plate 21 and block 18 to effect sealing during start-up. Plate 8 has recesses 27, 28 corresponding with distributer ports 25, 26 and sequentially connected to the cylinders via passages 29 during operation. Chambers 33 are defined by plug portions 30 of plate 21 engaging sockets 31 in block 18, sealing rings 32 surrounding the plugs. Plate 21 alternatively may be located on the distributer valve side of the cylinder block.
Patent GB-1070007-A (GB)
Title: Improvements relating to electric arc spot welding
Inventor: BRIMBLE ROY VICTOR
IPC: B23K9/007
Filed: 1962-11-30
Abstract: 1,070,007. Welding by fusion. BRITISH OXYGEN CO. Ltd. Nov. 6, 1963 [Nov. 30, 1962], No. 45405/62. Heading B3R. In electric arc spot-welding overlying plates, a consumable electrode is fed continuously towards the plates firstly at a high rate to give sufficient current density to burn through the upper plate or plates and then at a reduced rate to fill up the crater. In the ready to weld conditions with switches A ... E in the " single spot " location and switch MLS actuated, relays R1, R3 and R5 are energized. Operation of the torch trigger switch TS energizes relay WCR to disconnect the inching circuit and connect up the argon shielding gas valve ASV and the welding contacter WC. The electrode is fed by the motor WFM at a rate determined by the parallel resistances RA and CFR until the electrode contacts the plates to strike the arc. Energization of a welding current relay WCR brings up SR and the electrode is fed at a speed determined by parallel resistances RA and WVR. The circuits of timing relays R1, R5 or their equivalent are at the same time disconnected. When R5 releases at the end of a period sufficient to achieve the required penetration the feed rate is set by the rheostat WVR alone and the crater is filled. When R1 releases, the feed is stopped and the arc burns back until at a predetermined arc voltage, relay R4 is actuated whereupon the circuit is returned to its original condition.
Patent GB-1208903-A (GB)
Title: Improvements in or relating to methods of fabricating pliable interfaced textile materials
Inventor: KURTZ LEONARD DAVID
IPC: D01F6/62
Filed: 1967-10-06
Abstract: 1,208,903. Synthetic resin filaments. L. D. KURTZ. 6 Oct., 1967, No. 45773/67. Heading B5B. [Also in Division D1] A method of fabricating a pliable braided polyfilamentous textile material from a plurality of drawn synthetic resin filaments having elastic memory, comprises the steps of individually hot stretching each said filament to reduce its elastic memory, and braiding the plurality of the hot-stretched filaments into the polyfilamentous textile material. Preferably, the textile material is in the form of a strand or a thread. In the preferred embodiment, a pliable braided polyester strand or thread is made by providing a plurality of drawn polyester filaments having elastic memory, individually hotstretching each said drawn filament at a temperature in the range of from the glass transition temperature thereof to the softening point thereof to elongate the filament in the range of from a minimum of 20%, based on its prestretched length, to just below the breaking point, and subsequently braiding the plurality of hot-stretched filaments into the braided strand or thread. In examples, hot-stretching is effected in one stage, using platens at 450‹ F. The hot-stretched filaments may be lubricated prior to braiding, suitably by coatingby passing each through a dispersion of minute particles of "Teflon" (Registered Trade Mark) dispersed in water, with or without a suitable wetting agent. The braided thread may be sterilized, and is suitable for use as a surgical suture.
Patent GB-1467019-A (GB)
Title: Flame-retardant compositions and fibres made from them
IPC: C08K3/24
Filed: 1974-10-23
Abstract: 1467019 Flame retarded fibre forming polymer compositions KURARAY CO Ltd 23 Oct 1974 45945/74 Headings C3P and C3G A composition for producing flame retardant fibres and other shaped articles, comprises (a) polyvinyl alcohol, a vinyl alcohol copolymer containing at least 80 mole per cent vinyl alcohol, or a derivative of P.V.A. (b) P.V.C., a vinyl chloride copolymer containing at least 80 mole per cent vinyl chloride or a P.V.A./ P.V.C. graft polymer, and (c) calcined stannic acid having a crystal size of 45-200 Angstroms ; the weight ratio of (a) to (b) being 90 : 10 to 50 : 50, and the content of stannic acid being 0À1 to 10 wt. per cent based on the total weight of the polymers. The composition is usually used in the form of an aqueous spinning solution from which fibres, films &c. may be spun. Additional fire retardants such as SnO 2 , metastannic acid, Sb 2 O 3  or ZrO 2  may also be present.
Patent GB-1313040-A (GB)
Title: Coke ovens
IPC: C10B27/06
Filed: 1971-10-04
Abstract: 1313040 Ascension pipes SIMON-CARVES Ltd 4 Oct 1971 [19 Feb 1971] 46010/71 Heading C5E The pipe (18) located between an ascension pipe and a gas collecting main, see Fig. 1 (not shown), is connected to the main by a tubular member (11) which carries a swivelling valve disc seal at its lower end and a flushing water pipe 32 at its upper end. The member (11) is joined to the pipe (18) by a flange 25 having an annular lip 28 which projects into the member (11) and defines an annular space with the upper wall 31 of the member (11), the pipe 32 being located in this space with a baffle-plate 34 immediately below the end 33 of the pipe 32. The plate 34 is supported by an arm 35 from a lid through which the pipe 32 passes. Passage of flushing water into the member (11) and the ascension pipe is prevented by the flange 25 and lip 28.
Patent GB-1411826-A (GB)
Title: Protective cab structure for tracktype tractors
IPC: B62D25/08
Filed: 1973-10-02
Abstract: 1411826 Protective cabs CATERPILLAR TRACTOR CO 2 Oct 1973 [2 Oct 1972] 46020/73 Heading B7B A protective cab for a vehicle includes uprights 20, 24 interconnected by top cross members 22, 26 and an operator's seat support platform which comprises lower cross members 40, 42 connected between the uprights. The cross members 40, 42 are tied together at both ends and are bolted at 44 to brackets 46 which extend between and secure together the uprights 20, 24 at each side of the cab. A seat platform 50, having upstanding walls 52 and a shelf area 54 is mounted on the cross members 40, 42, the shelf area being connected at the sides to brackets 58 and at the rear to a flange 60 of cladding panels which are resiliently and removably mounted on the cab. The cab is provided with vehicle mounting brackets 32 at each side, those of one side being of hinge form 36 to allow the cab to be swung open upwardly of the vehicle. The floor platform is provided with a removable plate 90, and half doors 78, 80 are provided at each side of the cab.
Patent GB-1358540-A (GB)
Title: Fluid seals
IPC: F16J15/10
Filed: 1970-09-30
Abstract: 1358540 Joint-making packing BRYCE BERGER Ltd 20 Sept 1971 [30 Sept 1970] 46477/70 Heading F2B Sealing means between a pair of members 11, 15 having opposed sealing surfaces 19, 18, one 15, of the members defining a cylindrical spigot received in a recess in the other member 11, the sealing surfaces being substantially normal to the spigot axis, comprises a sealing member 22 having a tapered annular truncated portion 24 located in a tapered space defined by tapering the recess in the member 11 at its junction with the sealing surface 19, the sealing member also having a flat integral portion 23 located between the sealing surfaces, the tapered portion 24 being arranged so that as the surfaces 18, 19 are drawn towards each other it is deformed to fill the tapered space prior to the flat portion 23 being clamped between the surfaces 18, 19. As shown the parts 11 and 15 are a pump barrel and a valve body respectively. The taper angle between the surfaces 25, 26 of the tapered portion 24 is the same as that between the surfaces 20, 21 of the tapered space but in the uncompressed state of the sealing member, as in Fig. 1, the surfaces 25 and 26 are inclined to the surfaces 20 and 21 respectively at a small angle. The sealing member 22 is of soft metal such as aluminium alloy.
Patent GB-1189248-A (GB)
Title: Improvements in the Corrugation of Flexible Sheet Material
IPC: B65H45/20
Filed: 1968-10-01
Abstract: 1,189,248. Corrugation of pliable material. FLANDERS FILTERS, Inc. 1 Oct., 1968 [30 Jan., 1968], No. 46539/68. Heading D1S. A sheet of pliable material e.g. in the form of a continuous strip is corrugated by feeding it onto a support formed by a series of transversely spaced parallel ribs 26 mounted on an endless belt 15 which extends round two sprockets 12, 13, the former being driven. The rib segments 26 on each segment 16 of belt 15 are interconnected 'by rods 25 and held in their extended position by spring 28 when not acted upon by a camming force. A vacuum is applied to the underside of the sheet to draw it into firm engagement with ribs 26. The spacing between ribs 26 is then reduced as each segment 16 of belt 15 moves along its upper run by means of cam followers 33 travelling along cam surfaces 32, at each side of the machine, which gradually converge, thus forming corrugations of the sheet. The sheet may initially be moist and a heater may be provided above the ribs to heat the sheet after corrugation, a stream of air may be directed at the underside of the corrugated sheet to detach it from ribs 26. The ribs may have an inverted V-shaped or transversely rounded vertical cross-section. Further each rib segment may comprise three sections, the middle one being aligned in the direction of movement of belt 15 and the two end ones being oppositely angularly offset from this direction.
Patent GB-1431479-A (GB)
Title: Electrical terminal tag
IPC: H01R9/16
Filed: 1973-10-05
Abstract: 1431479 Mounting terminals PLESSEY CO Ltd 23 Aug 1974 [5 Oct 1973] 46734/73 Heading H2E A terminal tag has a sectorially shaped aperture pointing towards the central portion 8 of the leading edge 4. Pressure on trailing edge 7 distorts the tag body (Fig. 2, not shown) to retain the tag in an insulating member 15.
Patent GB-1487599-A (GB)
Title: Transfer sheets for use in heat transfer processes
IPC: B41M5/035
Filed: 1975-08-01
Abstract: 1487599 Heat transfer sheets BEMROSE SPONDON Ltd 1 Aug 1975 [29 Oct 1974] 46820/74 Heading B6C [Also in Division D1] A transfer sheet suitable for heat transfer includes a coating of starch or starch-based material under or over a transfer layer containing a vapour-phase transfer dye. The support of the sheet is generally paper or plastics, and the starch coating may include a film-forming additive, e.g. hydroxyethyl cellulose, polyvinyl alcohol, polyvinyl acetate, polyaerylate, butadiene-acrylonitrile, oxidized potato starch or a galacto mannano, and an alginate to reduce pin-holing. The starch coating contains 1 to 10% by weight dry solids and is applied at a rate of 1À5 to 6 g. per square metre. If the starch is applied over the transfer layer it may confer improved anti-set-off properties.
Patent GB-1413677-A (GB)
Title: Lubricant composition
IPC: C10M169/04
Filed: 1972-10-11
Abstract: 1413677 Lubricants SUN OIL CO 11 Oct 1972 46911/72 Heading C5F A hydrocracked luboil is stabilized to ultraviolet light by solvent extraction, e.g. with furfural, or by hydrofining, and then inhibited against oxidation by adding an inhibitor and brought up to multigrade specifications by adding a polymethacrylate. The amount of inhibitor is less than would be needed to provide the same oxidation resistance in a similar composition based on an unhydrocracked, solventrefined lube of the same viscosity, viscositygravity constant and VI, but the oxidation resistance is less than that of a similar composition based on an unstabilized, hydrocracked lube. The response of the hydrocracked oil to the inhibitor may be improved by adding 0À5 to 20% by volume of unhydrorefined naphthenic distillate. In the examples, lubricants comprise: (I, automatic transmission fluid) stabilized hydrocracked oil, dilauryl thiodipropionate (antioxidant), amine antioxidant, zinc dialkyl dithiophosphate, barium alkyldiphosphonate, overbased magnesium petroleum sulphonate, tricresyl phosphate, a refined petroleum oil containing 95% aromatics, dimethylsilicone defomer, synthetic sulphurized sperm oil, and a copolymer of lauryl methacrylate and methyl methacrylate on to which is grafted N-vinyl-2- pyrrolidone; (II, limited-slip differential fluid) stabilized hydrocracked oil, unstabilized hydrocracked bright stock, condensation product of chlorinated paraffin wax and phenol (pour depressant), zinc phosphorodithioate, chlorinated hydrocarbons, di-n-butyltin dilaurate and dimethylsilicone defoamer; (III, turbine oil) stabilized hydrocracked oil, pour depressant (condenaste of chlorinated diphenyl and chlorinated paraffin wax), and ditert.-butyl-paracresol; (IV and V, engine oils) stabilized hydrocracked oils, polymethacrylate VI-builder, zinc dialkyl dithiophosphate and magnesium petroleum sulphonate or other detergent.
Patent GB-1089422-A (GB)
Title: An automated manipulator
IPC: B25J9/04
Filed: 1964-11-18
Abstract: 1,089,422. Welding by pressure; soldering; machining; angular bending. EASTMAN KODAK CO. Nov. 18, 1964 [Nov. 18, 1963], No. 46989/64. Headings B3C, B3E, B3N and B3R. In an automated manipulator comprising a drive means and a movable tool support, the tool support comprises a slidably supported laterally movable element, a rotatable element rotatably supported on the laterally movable element and a slide element slidably supported on the rotatable element and providing a mounting for the tool and means are provided for locking two of the elements to permit movement of the third element. A stepping motor 10 coupled by a drive-shaft 11 to a sprocket 12 is mounted on a bedplate 13 and the sprocket drives a chain or belt 14 passing over sprockets 42 on a slide 24, which chain or belt drives a serrated wheel 15. An eccentric rod 17 on the wheel 15 drivingly engages a slide 18 carrying a soldering iron 20 and/or a pick-up solenoid 21 and welding electrodes 58. The guide 32 for the tool slide is bolted at 33 to a serrated wheel 30 freely rotatable on the shaft 49 on the wheel 15. The sliding movement of the main slide may be prevented by a serrated locking pawl 28 under the control of a solenoid 29 engaging a serrated strip 26 on the back of the slide. A serrated locking pawl under the control of a solenoid 35 may prevent rotation of the wheel 30 whereby rotation of the wheel 15 moves the tool slide upwardly or downwardly or a serrated locking pawl under the control of a solenoid 38 may prevent rotation of the wheel 15, when the tool slide will rotate instead of being extended. With both solenoids 35, 38 energized and solenoid 29 de-energized the slide will be moved laterally of the bedplate. In an operation a latching device 62 allows a motor 63 to drive a pallet assembly 64 on an endless track or monorail 65 to a working position. A tape reader 68 for a punched control tape 69 then receives a signal to release only the pawl 28, the motor 10 is energized to drive the slide so that the tool 21 is positioned over a pair of wires 56 on an assembly 22. The motor is stopped, the solenoid 29 is energized, the solenoid 38 is de-energized and the motor is started to move slide so that the electrodes 58 encompass the wires. The wires are welded or if pretinned soldered. The tool slide is then retracted. Rotation of the tool slide by de-energizing only the solenoid 35 is provided to bring the soldering iron 20 adjacent wire 70 to be soldered. A tool to bend two different metal parts into place, e.g. a double-ended press, may be provided on the tool slide. The tool may be a staking tool, a power-driven screw-driver with automatic screw feed, a heat seal head, a high-speed drill, reamer, tap, test probe, gauge, clamp &c.
Patent GB-1095179-A (GB)
Title: Dispensing apparatus
Inventor: JONES ERIC HARDING
IPC: G01F11/10
Filed: 1965-11-06
Abstract: 1,095,179. Delivering measured quantities of liquid or granular material. COTTON SILK & MAN-MADE FIBRES RESEARCH ASSOCIATION. Oct. 26, 1966 [Nov. 6, 1965], No. 47153/65. Heading B8N. [Also in Division G1] An apparatus for delivering measured quantities of liquid or granular material comprises a number of measuring units A, B, C, D mounted on a rotatable disc 15, the units being adapted to dip into material contained in a reservoir 10 and then raised to dispense the material into a trough 23. Each unit is formed with a member 21 having a wall 21a which, together with the circular part of the unit defines a measuring chamber, the leading end of the unit acting as a scoop. When the unit is raised to its top position the material therein flows through a spout 20, 22 into the trough from whence it flows through an outlet (24, Fig. 1). The disc may be rotated by a motor 12 at a constant or intermittent speed. The device may be used as a flow meter and a tachometer connected thereto in order to give a direct reading of liquid flow.