baber/WOPTO huggingface dataset:
Patent GB-438016-A (GB)
Abstract: 438,016. Thermal switches. BRITISH THOMSON - HOUSTON CO., Ltd., Crown House, Aldwych, London. July 13, 1935, No. 20083. Convention date, July 14, 1934. [Class 38 (v)] A thermal switch has a snap action member in the form of a leaf spring 17 clamped at one end by a screw 22 and having its righthand end formed as a knife edge engaging a bearing 23. The spring is under endwise compression so as to have a double curvature as shown. Contacts 25, 26 carried on the spring 17 co-operate with fixed contacts 27 and 28. The contact 27 limits the upward movement of the spring 17, while contact 28 is positioned so that when it is engaged by the contact 26, the spring is still slightly above the critical position, beyond which the spring if it were free, would move downwards into a stable lower position. Thus the spring 17 always tends to return to the upper position shown and, when the spring is moved from the upper position to the lower position the resisting force of the spring continually decreases. The switch is operated by a stud 16 on the free end of a bimetallic strip 13 fixed at 14. After a slight movement of the spring 17 its resisting force decreases rapidly and the spring is moved rapidly by the strip 13 to move into contact with contact 28. On cooling of the strip 13 the spring 17 returns.
Patent GB-1246681-A (GB)
Title: Improvements relating to nailing and like guns
Inventor: HILLIER MALCOLM EDWIN
IPC: B25C1/00
Filed: 1968-09-16
Abstract: 1,246,681. Pneumatic fastener driving tool. GASTON E. MARBAIX Ltd. 10 Sept., 1969 [16 Sept., 1968], No. 43933/68. Heading B4C. In a pneumatic fastener driving tool, fasteners e.g. nails, 74, 74A are fed forward by a nailengaging pawl mechanism 77 which is reciprocated forwards and backwards by an actuating arm 65 which itself is reciprocated in one direction by contact with the workpiece and in the other direction by pneumatic pressure through a bump valve stem 43. A plate 70, pivoted at 71, carries the pawl mechanism 77 which is urged by a spring 77A against the plate and comprises pawls 77B, 77C which project through a slot 78 in the plate. The plate is rocked by a peg 73 on the arm 65 engaging a further slot 72. On forward movement of the plate 70, the pawl 77B indexes the leading nail 74 in a nail belt into line with a driving blade 76, the pawl 77C indexing the second nail 74A forwards. As the blade 76 is actuated to drive the nail, it moves the pawls aside, hence allowing them to ride over the adjacent nails when the plate 70 is moved rearwardly. Specification 1,206,948 is referred to.
Patent GB-906537-A (GB)
Title: Transistorised input stage for radio receivers with several wave ranges
IPC: H01H73/60
Filed: 1960-12-22
Abstract: 906,537. Transistor amplifying circuits. STANDARD TELEPHONES & CABLES Ltd. Dec. 22, 1960 [Jan. 20, 1960], No. 44126/60. Classes 40 (5) and 40 (6). A transistorized input stage for radio receivers with several wave ranges comprises a single transistor which is used in a grounded base arrangement for V.H.F. and, a grounded emitter arrangement for the lower wave ranges. In the embodiment shown, the V.H.F. input voltage is applied to the emitter of transistor 3 via a tuned transformer 1, the base being connected to earth via the low resonance resistance of the series circuit 4, 5. The collector circuit consists of a tuned circuit 6, 7, 8, the V.H.F. output being taken from a capacitor 9. In the lower frequency ranges the input is applied to the base via tuned circuit 10, the emitter being earthed through transformer 1 which has a low impedance at these frequencies and the output is taken from tuned circuit 11 via capacitor 12. In Fig. 2 (not shown), the series resonant circuit is replaced by a line of quarter or half-wavelength at V.H.F., the section of line being arranged to present a shortcircuit to the base at V.H.F. At lower frequencies, the signal is fed over the line to the base.
Patent GB-1066350-A (GB)
Title: Improvements in or relating to magnetic alloys
IPC: C22C19/03
Filed: 1964-10-29
Abstract: An iron-nickel magnetic alloy containing 80-84 atomic % of nickel and in which the iron is partially replaced by any one of the following elements within the range stated or by more than one of those elements within a total of 2.5-10 atomic % is cold rolled, heated in an oxidizing atmosphere at 250-1100 DEG C., annealed in hydrogen or vacuum at a temperature between 1000 DEG C. and the melting point of the alloy, and then quenched from a temperature above 450 DEG C. .molybdenum.2-10 atomic % .tungsten.2-10 atomic % .chromium.3-10 atomic % .vanadium.3-6 atomic % .silicon.4-10 atomic %  The alloy may be heat treated at 500 DEG  -1100 DEG C. prior to the oxidizing step.
Patent GB-928753-A (GB)
Title: Improvements in or relating to match containers and the like
IPC: A24F27/00
Filed: 1960-12-23
Abstract: A match container has on one of its sides a pressure-sensitive adhesive, masked by a protective strip which may be removed by the user, thereby enabling the container to be secured to any convenient object, e.g. a cigarette packet.
Patent GB-1372618-A (GB)
Title: Variable ratio master cylinder
IPC: B60T11/22
Filed: 1972-09-26
Abstract: 1372618 Master cylinders BORG-WARNER CORP 26 Sept 1972 [13 Sept 1972] 44461/72 Heading F2F A variable ratio master cylinder comprises a housing 11, defining a stepped bore 25 the larger diameter portion 26 of which having an end wall, a piston 31 slidable in both bore portions 26, 27 having a seal 72 associated therewith which divides the larger bore portion 26 into two chambers, one chamber being defined at one end by the end wall, a fluid outlet 85 communicating with the one chamber, and a metering valve 45 having a valve opening area exposed to pressure in the one chamber and a valve closing area, smaller than the opening area, exposed to the other chamber and biasing means urging the valve to a closed position. In the retracted position of the piston 31, as shown, the seal 72 is held by a ring 75 in a position to provide communication between the chambers, the other chamber being in communication with the reservoir 12 by an open tilting valve 102. Upon pedal actuation, rightward piston movement causes the seal 72 to close the inter-chamber communication to pressurize fluid to the outlet 85 to the brakes. During the initial part of the piston movement, the tilting valve 102 remains open to avoid a pressure reduction in the other chamber. Continued piston movement causes the valve 45 repeatedly to open and then close as fluid each time is allowed to flow to act on the closing area. At a predetermined pressure value in the one chamber, depending on the valve opening and closing areas, and the force of the biasing spring 56, the valve remains permanently open so as to allow the other chamber to attain the same pressure as the one chamber. This reduces the effective pressurizing area of the piston 31 to the smaller bore area, thus changing the actuation from a large volume low pressure actuation to a smaller volume higher pressure actuation. As shown, the master cylinder is for a dual brake circuit and has a second piston 86 supplied for a separate part of the reservoir 12. The piston 86 has an identical seal 72A and ring 75A as those o the first piston and operates just as as fixed ratio piston. Upon pressure failure in the one chamber, an extensive 62 abuts the second piston 86 to operate it.
Patent GB-1273339-A (GB)
Title: Data processing arrangement for processing waiting time commands
IPC: G06F9/30
Filed: 1970-09-21
Abstract: 1,273,339. Delayed instruction execution. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. 21 Sept., 1970 [24 Sept., 1969], No. 44789/70. Heading G4A. A data processor arranged to execute commands after delays specified by respective commands comprises one real time clock and one difference clock which generates a signal initiating execution of a command when it reaches zero, the arrangement being that the processor generates an ordered list of commands according to the real times at which they are to be executed and the difference clock is set to the time delay (i.e. the real time of execution-the instantaneous real time) specified by the instruction at the head of the list, i.e. the first instruction to be executed, each time the list changes either because of the execution of an instruction or the addition of a new instruction to the list. Instructions are received in register PST and the time delay of each instruction is added to the time indicated by the real time clock A to give the real time at which the instruction is to be executed which is stored in memory SP. The various times thus stored are then compared to generate an ordered list with the earliest time at the head of the list. The instantaneous time given by clock A is then subtracted from the earliest stored time and the difference clock is set to the result. If the result is greater than the maximum time which the difference clock can handle the clock is set to its maximum time which is subtracted from the calculated delay time for the instruction, the result being stored in memory SP. The signal generated by the difference clock when it reaches zero is then used to reset the difference clock to the new delay time stored in memory SP. When the difference clock reaches zero the instruction is executed, the list is updated and the process repeated. If a new instruction is received prior to the execution of the instruction currently being timed its delay time is compared with the remaining delay of the current instruction and the list is updated and the difference clock reset as necessary.
Patent GB-1057259-A (GB)
Title: Switching systems
Inventor: DAHLMAN PER OLOF
IPC: H04Q11/04
Filed: 1963-11-19
Abstract: 1,057,259. Automatic exchange systems; frequency translation. INTERNATIONAL BUSINESS MACHINES CORPORATION. Nov. 19, 1963, No. 45574/63. Headings H4K and H4R. In an arrangement for switching between frequency divided channels via a T.D.M. highway, sampling of the various channels and reconversion of the samples to signals of the appropriate frequency takes place without conversion to audio frequencies. As shown, incoming frequency multiplexed signals are separated by band-pass filters 21 ... 24 into signals of range 4-8 kc., 8-12 kc. . . . These are sampled sequentially at an 8 kc. rate by gates 35, 36 . . . the sampling series containing harmonics of the sampling frequency and sidebands thereof. These sidebands occur in all the ranges of the output band-pass filters 61 ... 64, so that if a suitably timed pulse series is applied to one of gates 45 ... 48 the associated one of band-pass filters 61 ... 64 will receive a sideband within its range and pass it to the outgoing frequency multiplex line. The time division highway 49 may be used also for connections between audio channels and frequency multiplexed channels in a similar manner, or for communication between two audio channels. A single T.D.M. highway may serve more than one frequency multiplexed set of channels, and bigger systems using more than one T.D.M. highway with appropriate inter-highway gates may be used. Reference has been directed by the Comptroller to Specifications 905,838 and 941,749.
Patent GB-1381136-A (GB)
Title: Development device
IPC: G03D13/00
Filed: 1972-10-03
Abstract: 1381136 Heat-development MINNESOTA MINING & MFG CO 3 Oct 1972 45626/72 Heading G2X An exposed heat-developable photo-sensitive web 12 passes from a supply reel 46 via a cleaning and tensioning roll 50, nuclear-ionizing bar 78 and idler roll 52/sheet metal guide 54 round a freely rotary resistance-heated drum 18 having longitudinal finish marks and a surface roughness of 1À6-3À2 micrometres and thence via a blower assembly 98, inspection light box 102, nuclear ionizing bar 112 and cleaning and drive roll 56 to a takeup reel 48. The drum is contained in an insulated enclosure 38 and has a surface cleaning brush 80, charge-removal earthed roll 68 and resistance heater 20 comprising a multiplicity of fine wires of increased concentration at the ends of the drum and a heat output controlled by a separately connected Wheatstone bridge. Before web feeding, the drum is directly driven to maintain uniform heating. Rolls 50 and 56 have a surface of polydimethylsiloxane of sufficient surface tack to remove foreign particles from the web and the nuclear ionizing bars 78 and 112 supply alpha particles to neutralize charges on the web. Drive roll 56 is driven via a gear box by a variable speed drive motor and roll 50 is coupled to an adjustable torque motor to produce the desired web tension. The supply and takeup reels are coupled to additional torque motors maintaining the web in wrapped condition on the reels and enabling the web to be rewound directly from reel 48 to reel 46.
Patent GB-1529834-A (GB)
Title: Brushless direct current motors
IPC: H02P6/15
Filed: 1975-11-03
Abstract: 1529834 Control of brushless motors PAPST. MOTOREN KG 3 Nov 1975 [2 Nov 1974] 45683/75 Heading H2J A brushless D.C. motor circuit comprises a permanent magnet rotor R, a single phase stator winding 2 or 3 arranged to generate an alternating field, electrical commutation means 12 or 13 arranged to selectively connect the stator winding to a source of power, galvanomagnetic means, e.g. Hall generator 1, arranged to control the commutation means in accordance with the position of the rotor, and at least one non-linear circuit element 5, 7, 17 or 4, 6, 16, connected between the means 1 and the means 12 or 13, which element is arranged to appreciably reduce the flow of current in the stator winding before the theoretical commutation time and to increase said current flow after the theoretical commutation time. There is described with reference to Fig. 2 (not shown) a special power supply for Hall device 1, with reference to Fig. 3 (not shown) a circuit similar to Fig. 1, with reference to Fig. 4 (not shown) a known circuit in which the described embodiments may be incorporated, and with reference to Fig. 5 (not shown) a modification for incorporation into Fig. 1.
Patent GB-1410931-A (GB)
Title: Motorized retractable padded cushion
IPC: B60R21/02
Filed: 1972-10-09
Abstract: 1410931 Projecting guards J R HOLLINS 9 Oct 1972 [15 Oct 1971] 46534/72 Heading B7B A protecting guard comprises a padded cushion 32 which is actuated from a retracted position to an operative position by an electric motor 52 through a drive shaft 50 engaging a gear 48. The gear 48 rotates a screwed shaft 40 engaging a nut 38 within a bracket carried by a portion 34 of the cushion. The cushion is guided by tubular members 18, 20 engaging a hollow frame 30. The motor 52 is reversibly driven by battery 62 in circuit with an ignition switch 66 having contacts 68, 70. When the switch 66 is "on" contacts 64 and 68 are made and "off" when contacts 64 and 70 are made. Contact 68 is connected through a limit switch 58 to motor contact 72, while contact 70 is connected through a limit switch 56 to motor contact 74. In operation, a passenger or driver enters the vehicle with the cushion in retracted position. When switch 66 is turned "on" motor 52 is energized to extend the cushion horizontally until a plate 54 opens switch 58. When the switch 66 is turned "off" the motor 52 is energized to retract the cushion until plate 54 operates switch 58. The cushion may also be retracted with the cushion "on" by depressing button 82 of a switch 76. In modifications, Fig. 5 (not shown) cushion 32 retracts vertically, the cushion has a hook 94 Fig. 6, (not shown), engaging a bar (98) fixed to door 96, and, Fig. 7 (not shown), the cushion has a bar (102) engaging bar 98.
Patent GB-962994-A (GB)
Title: Fish toxicant compositions
IPC: A61K47/12
Filed: 1961-12-29
Abstract: A fish toxicant composition comprises a fish toxicant, a water-immiscible organic solvent for the fish toxicant, an emulsifier and an organic acid, acid anhydride or acid chloride which is soluble in the water-immiscible solvent to the extent of at least 1% by weight and has a water-solubility of less than 1% by weight and a dissociation constant in water greater than k=10-6.  Specified fish toxicants are rotenone and other rotenoids, toxaphene strobane, chlordane, D.D.T. and dieldrin.  If the fish toxicant is a rotenoid the composition may contain a synergist therefor, e.g. piperonyl butoxide, n-octyl sulphoxide of isosafrote or di-n-propyl, 6,7 - methylenedioxy - 3 - methyl-1,2,3,4-tetrahydronaphthalene.  The emulsifier may be a non-ionic or anionic surfactant.  Specified acids, acid anhydrides and acid chlorides are maleic, malonic, malic, fumaric, adipic, succinic, pimelic, sebacic, benzoic, salicylic, toluic, phthalic and cinnamic acids and the chlorinated derivatives of the specified aromatic acids; and their anhydrides and acid chlorides. Suitable water-immiscible organic solvents are petroleum fractions, acetone, aromatic hydrocarbons, e.g. methylated naphthalenes, chlorinated hydrocarbons, e.g. ethylene dichloride and perchlorethylene and those whose density approximates to that of water.  The compositions are used for treating thermally stratified water to kill fish therein.  The compositions may contain a carrier, e.g. a dispersible powder.
Patent GB-1123052-A (GB)
Title: Device for cleaning floor coverings
IPC: A47L11/32
Filed: 1965-11-05
Abstract: 1,123,052. Suction cleaners. E. NOHL. 5 Nov., 1965 [5 Nov., 1964], No. 47035/65. Heading A4F. A carpet cleaner comprises an operating head 1 having a distributer 16 for applying cleaning liquid to a carpet to be cleaned, cleaning brushes 18 and a suction means, the distributer and cleaning brushes being so arranged within the range of influence of the suction means that liquid applied to the carpet through the distributer is sucked off the carpet together with any dirt which may be present in or on the carpet by the suction means immediately after being acted upon by the brushes. The cleaning liquid is supplied to the distributer 16 from a container and/or a pipe 9 provided with a needle valve 11 which is automatically adjusted in accordance with the suction pressure in the head 1 either directly or by a bellows 12 or a diaphragm. The distributer 16 which may be adjustably mounted in the head may be pivotally mounted and provided with flange engaging buffers 20 so that according to the direction of movement of the head 1 over the carpet one of the buffers 20 engages its associated flange 22 thereby to concentrate suction in the region of a duct consequentially formed between the other buffer and its associated flange. The distributer and brushes may be individually or integrally spring mounted within the head 1 (Figs. 4 and 5, not shown) or a rotatable brush may be mounted co-axial with the distributer (Fig. 7, not shown). The suction means may be connected to the cleaning head via a container (5) which collects dirty liquid and which may be remote from the cleaning head (Fig. 1, not shown) or integral with the supply container 2 attached to the head 1 (Fig. 6, not shown).
Patent GB-1131226-A (GB)
Title: Protecting holders for hypodermic injectors
Inventor: LOVE DOUGLAS STANLEY
IPC: A61M5/30
Filed: 1964-11-19
Abstract: 1,131,226. Holders for hypodermic injectors. EXPRESS INJECTOR CO. Ltd. 12 Nov., 1965 [19 Nov., 1964], No. 47130/64. Heading A5R.  A holder for handling and protecting the detachable nozzle cap 3 of a needleless hypodermic injector comprises an inner part 1 having a surface 2 shaped to mate with splines 4 on the cap so that the cap is supported non- rotatably, and an outer part 5 was an inwardly projecting flange 6 having a similarly shaped edge so that by rotating the parts 1, 5 relative to each other the cap can be inserted or removed through the upper part of the holder, or is locked within the holder. The cap is provided with a formation 11 whereby it can be attached to the injector while still retained within the holder and the holder is provided with a removable cover (7) able to be fitted over the formation 11. A pin 9 moving in a slot 10 may be provided to limit the relative rotation of the parts 1, 5 and the holder may also be provided with a removable cover (8) to protect the orifice of the nozzle cap. The holder may be manufactured from a heatresistant polycarbonate plastics material so that the holder containing the nozzle cap may be sterilized.
Patent GB-1103200-A (GB)
Title: Improvements in closure or capping members
Inventor: CLABBURN ROBIN JAMES THOMAS
IPC: B65D41/24
Filed: 1965-11-08
Abstract: 1,103,200. Caps for bottles etc.; pipe &c. end protectors. RAYCHEM Ltd. 4 Nov., 1966 [8 Nov., 1965], No. 47247/65. Headings B8C and B8T. [Also in Divisions A4 and D1] A cap for a bottle, tube end &c. is formed by heat shrinking a length of thermoplastic tube 1 over a rigid ring 2, twisting the free end of the tube 1 to seal it, and pushing this twisted end into a recess 3 in the ring 2. The cap is then heat shrunk on to the bottle &c. The cap may be made of an olefine polymer such as polyethylene, polypropylene or polyvinylidene fluoride. The cap may incorporate a heat-fusible insert. To give a flat top to the cap, the top surface irregulatities may be filled with wax. Heat to cause shrinkage may be by conduction, or preferably convection or R.F. heating. The caps may be used to protect the ends of mineral oil insulated cables, pipes, lead cables, ropes or furniture legs.
Patent GB-1015469-A (GB)
Title: Improvements in or relating to hall effect devices
IPC: G11B5/37
Filed: 1963-12-02
Abstract: 1,015,469. Making Hall-plate recording &c. heads. AMPEX CORPORATION. Dec. 2, 1963 [Dec. 3, 1962], No. 47472/63. Heading G5R. [Also in Division H1] A plurality of Hall effect devices forming parts of playback heads are produced by lapping and polishing a first ferrite slab, attaching a Hall-plate to a polished face of the slab, lapping the Hall-plate to the desired thickness, attaching a second ferrite slab to the exposed face of the Hall-plate, and dividing the resulting structure into a plurality of individual units 20, each comprising a Hall-plate 26 fixed between ferrite blocks 22, 24. Contacts 28 and leads 30 are attached to the periphery of the Hall-plate 26, for example at its corners. The Hall-plate is of indium arsenide, the ferrite slabs are cemented to the Hall-plate by means of an epoxy resin, the resulting structure is divided using an ultrasonic impact grinder or a diamond saw, and the contacts 28 are made by soldering or by vacuum deposition using indium or gold. Each individual unit 20 may be mounted in the rear gap of the magnetic transducer 32. A plurality of units may be utilized in a multitrack transducer.
Patent GB-1248203-A (GB)
Title: Process for producing iron powder
Inventor: STONE W J DENNIS
IPC: C21B13/14
Filed: 1967-10-19
Abstract: 1,248,203. Reducing iron ore. FINA METAL Ltd. 16 Oct., 1968 [19 Oct., 1967 (3)], Nos. 47738/67, 47739/67 and 47741/67. Heading C1A. [Also in Division C7] Finely divided natural hematite is purified by passage through a wet magnetic separator and is then reduced in the solid state to form a mass of loosely adhering iron particles, which may be disintegrated and subjected to impact densification in a hammer mill. Reduction may be carried out above 1600 F., preferably at 2000-2200 F. using a gaseous hydrogencontaining reductant or a solid carbonaceous reductant, or a combination of the two; it may be a two-stage process, possibly with densification after each stage, and as exemplified is carried out in an indirect gas-fired belt furnace using a layer of powdered carbon underlying the ore feed and a reducing gas atmosphere. The hematite may be ground before purification, which latter step preferably reduces the content of silica and other acid insoluble impurities to less than 0À2%.
Patent GB-1356058-A (GB)
Title: Pipe coupling having connections for household service and for the like purposes
IPC: F16L47/32
Filed: 1971-10-14
Abstract: 1356058 Pipe couplings PLASTOTECNICA SA 14 Oct 1971 [28 Oct 1970] 47792/71 Heading F2G A coupling socket, having integral branch connections 19, has sealing means 13, 14 and ribs 16, 17 to prevent the inner ends of engaged pipes or pipe fittings from blocking the branch connections. The end 18 may be internally screw-threaded and the screw-thread 20 omitted.