baber/WOPTO huggingface dataset:
Patent GB-760505-A (GB)
Title: Improvements in and relating to electrical resistors
Inventor: ALLAN ARCHIBALD
IPC: H01H33/16
Filed: 1954-03-16
Abstract: 760,505. Wire resistances. ENGLISH ELECTRIC CO., Ltd. March 11, 1955 [March 16, 1954], No. 7586/54. Class 37. A multi-layer resistor coil is wound on a former with alternate layers of approximately equal length and wound along the former in opposite directions, the junction between one layer and the next being stepped along the former with respect to the corresponding end of the next preceding layer. The Figure shows a resistor in which a resistive wire is wound in layers in alternate directions on a former 6, the first layer being in two equal sections 12 and 13 wound in opposite directions to be substantially non-inductive, this layer is covered with insulation 14 graded in thickness along the length of the former. The second layer 15 is wound over the first in the same sense as the second half of the first layer and this layer and those that follow are terminated in such a position that the ends of successive windings are in staggered formation. By this means the necessary creepage distance between the ends of adjacent layers is provided the interlayer voltage drop being graded down the length of the former.
Patent GB-291906-A (GB)
Title: Improvements in or relating to screw propellers
IPC: B64C11/06
Filed: 1927-03-19
Abstract: 291,906. Fairey, C. R. March 19, 1927. Screw propellers. - The blades of screw propellers have roots of circular crosssection adapted to fit within boss sockets and be angularly adjustable therein, the blade being secured by a nut with threads of different pitch which engage the root and socket and co-operate to have a differential action. The blades 17, Fig. 1, have roots of circular cross-section, the portion 19 being conical around which is fitted a split collar 20 having a keyway 21 with sliding fit on a key 22 fixed to the portion 19 and also having an external thread 23. The socket 14 has an external thread 16 of the same hand but different pitch from the thread 23, and a nut 24 engages both threads and draws the shank firmly into the socket. The nut may be locked by set screws 25 which are held by a wire 26. In a modification, a nut 34, Fig. 4, has internal and external threads of different pitch which engage threads on the blade shank 29 and socket 31.
Patent GB-1383321-A (GB)
Title: Device for releasing pressurised gas from a sealed capsule
IPC: F17C7/00
Filed: 1971-01-23
Abstract: 1383321 Gas discharge device WALTER KIDDE CO Ltd 21 March 1972 [23 March 1971] 7665/71 Heading F4P A discharge device for a pressurized gas capsule having a burstable seal comprises a body 1 defining a bore 4 having a socket 2 at one end to receive the gas capsule, a piston 14 having a bursting member 16 located in the bore 4 and spring-urged against a plunger 9 bearing against a shoulder 5 and displaceable manually by a pivoted lever 22 to actuate the device, the bore 4 also having a discharge passage 18 on one side of the piston, and a gas admission port 19 for pneumatic actuation of the device, on the other side of the piston. The device may be used for inflating life-saving apparatus, the port 19 communicating with a gas cartridge 20 electrically connectible to a water activated electric cell.
Patent GB-447852-A (GB)
Title: Improvements in or relating to vehicle brakes
IPC: F16D65/22
Filed: 1935-03-13
Abstract: 447,852. Brakes. BENDIX, Ltd., and IRVING, J. S., King's Road, Tyseley, Birmingham. March 13, 1935, No. 7742. Addition to 428,637. [Class 103 (i)] The brake-shoe actuating mechanism described in the parent Specification is modified by the substitution of balls for the rollers comprised in that mechanism. A plunger g slidable in a direction at right angles to the plane of the shoes a, b, in a housing e secured to the back plate of the brake contains in a bore j, balls k which contact each other and inclined grooves l in tappets m slidable in the housing in the plane of the shoes. The ends of the tappets engage plates n on the webs of the shoes and the tappets are cut away to provide slots p which receive the ends of the shoe webs and permit these ends normally to engage the housing. Outward movement of the plunger by a cable attached to it separates the tappets to apply the brake, the friction being substantially only rolling friction. In the case of a self-energizing brake the braking load is taken by the housing e.
Patent GB-141182-A (GB)
Title: Improvements in or relating to the fastening of metal bases to glass vessels such aselectric incandescent lamps
IPC: H01J9/34
Filed: 1919-03-29
Abstract: 141,182. British Thomson Houston. Co., (General Electric Co.). March 29, 1919. Attaching fittings.- Caps are attached to glass bulbs such as electric incandescent lamps by a cement which softens at a moderate temperature, e.g. 200‹ C., and hardens at a higher temperature, e.g. 300‹ C.; the heating takes place during exhaustion of the bulb. A suitable cement consists of one part by weight of bakelite (a condensation product of phenol and formaldehyde), one to two parts of resin, and eight to ten parts of marble dust as a filler to reduce shrinkage, with a solvent such as wood alcohol. The operation may be carried on in an oven, Fig. 3; the exhaust tubes of the bulbs fit in pipes 9, and the caps are held by loosely mounted cups 10, which press them on to the bulbs on melting of the cement.
Patent GB-254652-A (GB)
Title: Improved construction of regenerative coke oven flues
IPC: C10B5/02
Filed: 1926-03-24
Abstract: 254,652. Fabry, R. F. F. March 24, 1926. Coke ovens. - In a coke oven in which a portion of the outgoing products of combustion is recirculated through the combustion flues as described in Specification 105,047, and in which the heating-flues are arranged in pairs as described in Specification 220,556, combustion is effected alternately in the two flues of each pair, the supply of gas being continuously delivered at the base of the flues. As shown all the heating-flues open at their upper ends into the connecting-flue 3, and adjacent flues 1, 2 forming the pairs are connected at their lower ends through the ports 4. Immediately beneath each of these ports is a gas nozzle 9, and at the base of each flue is a port leading, to a regenerator, the sets of flues 1, 2 of each heating-wall being connected to different regenerators. In operation each flue acts alternately as a combustion flue and as a waste gas flue, and the gas from the nozzles 9 is drawn into the combustion flues for the time being by the inflowing streams of air. Gas is supplied to the passages 10 alternately from the two sides of the bench.
Patent GB-509067-A (GB)
Title: Improvements in and relating to systems of electric motor control
IPC: H02P25/12
Filed: 1938-03-15
Abstract: 509,067. Hydraulic accumulators. BRITISH THOMSON-HOUSTON CO., Ltd., KINCHIN, J. F., and WILLIAMSON, A. March 15, 1938, No. 8031. [Class 69 (ii)] [Also in Group XXXV] The speed of an electric motor A driving a pump and operating in conjunction with a hydraulic accumulator B is controlled by means of a master lever D connected to the motor brush-shifting mechanism M and engaging a ramp C on the accumulator so shaped that the speed of the motor is automatically reduced as the accumulator reaches the top of its travel. In order that the motor may start from rest at the lowest speed, a lever 0 engages a catch N when the accumulator is in its bottom position to cause the lever D to be lifted off the ramp C and the brush mechanism to be in the starting position. As the accumulator rises, the stop N leaves the lever 0 and the weight S acting through gear wheel H, quadrant G and link F brings the lever D on to the ramp and moves the motor brush-gear to the full speed position which is maintained during movement through the distance R. When the accumulator. has risen to this extent, the master lever engages the sloping part Q of the ramp whereupon the motor is gradually slowed down. In the region P the motor is switched off by a tappet switch, or a hydraulic bye-pass may be brought into action. A safety spring T is inserted in the link F, to avoid having the whole weight of the accumulator on the control gear in the event of faulty adjustment. In a modification, the ramp is a continuous inclined plane, to give a gradual variation of speed throughout the travel of the accumulator.
Patent GB-177517-A (GB)
Title: Process of and means for combatting pests
IPC: A01N59/02
Filed: 1922-03-21
Abstract: 177,517. Rupprecht, G. March 21, 1921. [Convention date]. Void [Published under Sect. 91 of the Act]. Fungicides; insecticides; fumigants; vapours, delivering.- Preparations for use as fungicides and insecticides consist of mixtures of sulphur with arsenic sulphide or antimony sulphide or both. The arsenic and antimonv compounds may be mixed with sulphur powder or milk of sulphur, or, preferably, are dissolved in molten sulphur. The preparations may be sprayed upon plants in the powdered form or may be employed as vapour by heating in a transportable boiler and blowing out the fumes produced by means of a current of inert gas such as carbon dioxide, nitrogen, or air freed from oxygen. The degree of dilution of the vapours may be regulated by adjustment of the gas piessure.
Patent GB-1018993-A (GB)
Title: Androsta [16,17-2,3]pyrane derivatives and production thereof
Inventor: IGARASHI KIKUO
IPC: C07J71/00
Filed: 1962-10-15
Abstract: The invention comprises a compound of the formula <FORM:1018993/C2/1> wherein the ripple mark represents an undetermined configuration and a process for the preparation thereof which comprises treating a compound of the formula <FORM:1018993/C2/2> wherein R and R1 are each hydrogen or an alkanoyl group having not more than 8 carbon atoms, R11 is hydrogen or an alkyl group having not more than 7 carbon atoms with a basic substance in a hydrous or anhydrous solvent medium.  As basic substance there may be used alkali metal hydroxide, an alkali metal alkoxide, an alkali metal bicarbonate, or an alkali metal acetate.
Patent GB-673772-A (GB)
Title: Improvements in or relating to cycle and motor cycle hub brakes
IPC: F16D65/14
Filed: 1950-04-04
Abstract: 673,772. Disc brakes for cycles. KLAUE, H. April 4, 1950 [Nov. 7, 1949; Nov. 7, 1949; Nov. 7, 1949], No. 8486/50. Addition to 665,251. Class 103 (i). The invention comprises three improvements in the disc brake for cycle hubs claimed in the parent Specification. The first improvement, the purpose of which is to prevent any of the balls 3 remaining stationary in its recess when the discs are displaced so that it is liable to fall out of position, consists in inclining the recesses 4, 5, so that their centre lines are not concentric with the discs 1. When the discs are displaced, the balls 3 are thus moved from the position shown in Fig. 1, nearer to the centre of the disc, to the position shown in Fig. 2. The overlapping of the sides of the recesses 4 and 5 ensures that all of the balls must move. The second improvement consists in forming the direct impression on the discs, as shown in Fig. 4, so as to effect mechanical hardening of the surfaces. The bulges 8 and 9 formed in the material do not affect the operation of the brake. The third improvement is intended to prevent unintentional relative displacement of the discs due to inertia, vibration, &c. This consists in providing a number of springs 18, as shown in Fig. 5, located between the discs 11, and 12, with their ends 19, 20 anchored in holes between the discs and their linings 21 and 22.
Patent GB-947031-A (GB)
Title: Improvements in or relating to gear checking instruments
IPC: G01B5/20
Filed: 1962-03-06
Abstract: 947,031. Gauging toothed gears. MAAG GEAR WHEEL & MACHINE CO. Ltd. March 6, 1962 [March 7, 1961],No. 8572/62. Addition to 871,520. Heading G1M. The apparatus described in the parent Specification for measuring pitch errors in a gear wheel 2 along the line of action of the tooth flanks is modified in that instead of the rotatable annular measuring jaws 14, 22 having an adjustable helical portion to rotate the freely-mounted gear wheel one pitch per revolution of the driven shaft 5, the gear wheel 2 is driven in synchronism with shaft 5 the ough a servo-system and reduction gearing (Fig. 5) by a motor 117,the entire measuring head 1 being slidably displaceable, against spring- loading 109,110 on guides 101,102 and roller bearings 103, 104,by the action of the gear teeth against the measuring jaws. A servomotor 114 drives shaft 5 through reduction gearing 7, and error signals developed between inductive synchros 116,121 linked, respectively, with motors 114 and 117 are amplified at 122 and fed back to motor 114. The casing of the latter includes a tachometer generator 115 giving negative feedback to the amplifier to stabilize the 'system against hunting. It is said that the apparatus can be used for testing gears mounted in the gear-cutting machine, the workpiece drive then replacing motor 117.
Patent GB-819002-A (GB)
Title: Improvements in and relating to electric switch gear and contacts therefor
IPC: H01H1/58
Filed: 1957-03-15
Abstract: 819,002. Contact-members for switches; switches held set and freed mechanically. HESKETH, J. B. FERMOR-, and GILBERT, T. J. Feb. 19, 1958 [March 15, 1957], No. 8630/57. Class 38 (5). A contact element for use in a switch such as that described in Specification 656,104 comprises a metal block 1 having a cylindrical channel 3 in which is seated a part-spherical abutment 4 of a metal strip 2. A pin 5 secured in the block 1 passes through a slot in the strip 2 and carries a spring 8 to maintain the strip 2 rockably seated on block 1. Block 1 has holes 10 for securing it to a movable frame whereby strip 2 may be brought into and out of contact with a fixed block 11.
Patent GB-1109461-A (GB)
Title: Angular position encoding apparatus
Inventor: MESTON SPENCER DAVIDSON
IPC: G01D5/347
Filed: 1964-03-02
Abstract: 1,109,461. Angular position encoders. SPERRY RAND Ltd. 13 May, 1965 [2 March, 1964], No. 8672/64. Heading G4H. An encoder for determining the angular position of a shaft 3 comprises a rotatable drum 2 on the circumference of which are a plurality of patterns of transparent and opaque areas 4, each pattern corresponding to one digit of a code. The patterns 4 co-operate with a pattern of opaque areas 11 defining slits, photo-electric cells 5 within the drum being illuminated as the shaft 3 rotates by light from gallium-arsenide light-emitting diodes 12 passing through the slits. The photo-cells are connected to trigger circuits to give coded signals on electrical leads 14.
Patent GB-1293931-A (GB)
Title: Hydraulic apparatus
Inventor: WORN CLAUDE LESLIE GORDON
IPC: F15B11/16
Filed: 1969-02-18
Abstract: 1293931 Hydrostatic transmission control DOWTY HYDRAULIC UNITS Ltd 30 Jan 1970 [18 Feb 1969] 8688/69 Heading F2D A control system for a motor vehicle hydrostatic transmission having an engine-driven fixed displacement pump 2 supplying a variable displacement motor 42 through a flow control valve 6 and a manually controlled reversing and throttle valve 9 comprises means to adjust the flow control valve 6 in response to the pressure drop across the throttle valve 9. Pressuresensitive servos 81, 94 increase motor displacement and engine speed when the pressure supplied to the motor 42 exceeds a predetermined value. A follow-up servomotor 76 controls the displacement of the motor 42 in response to movement of a lever 38. An overrun valve 46 throttles motor exhaust during overrun for vehicle breaking. A flow valve 6 splits the pump output into the supply for the motor 42 and a supply 7 for auxiliary equipment. The control lever 38 increases engine speed at high output speeds. Operation.-Initial movement of the control lever 38 moves a valve spool 28 right (or left) to provide a throttled connection between the pump supply line 8 and the motor supply line 43 (or 44) for forward (or reverse) drive. The pressure supplied to the motor supply line is also fed through a port 47 (or 48) and a shuttle valve 49 to a chamber 17 of the flow control valve 6. The pressure differential on the piston 21 (i.e. the pressure drop across the throttle valve 9) adjusts the flow from the pump 2 to the line 8 in accordance with demand. Increased movement of the lever 38 reduces the throttling effect of the valve 9 and thus increases motor speed. In addition, movement of the lever 38 beyond the position A acts through a rod 85 and cam 84 on the follow-up servomotor 76 which reduces pump displacement. On movement of the lever 38 beyond the position B the cam 84 acts through a linkage 91 to increase engine speed. Excessive pressure in the motor supply line 43 or 44 acts through a line 82 on servos 81, 94 which override the manual control and respectively adjust the follow-up servomotor-76 to increase motor displacement and increase engine speed. On overrun increased pressure in the motor return line 44 (or 43) acts through a line 65 to move the spool 61 of the overrun valve 46 right whereupon motor exhaust is throttled for vehicle braking. During overrun liquid is supplied through a line 69 to the motor supply line to prevent cavitation. If during drive the lever 38 is moved to the neutral position and thus the valve spool 28 blocks the motor exhaust line the motor exhaust flows through a relief valve 51 which opens at a high pressure and thus provides vehicle braking. The motor 42 may be of the tilting head type or of the swash-plate type. The hydrostatic transmission may be by-passed by a clutch.
Patent GB-309074-A (GB)
Title: Improvements in or relating to the construction of aeroplanes
IPC: B64C3/00
Filed: 1929-03-18
Abstract: 309,074. Soc. Anon. des Ateliers d'Aviation L. Breguet. April 4, 1928, [Convention date]. Cars ; framework ; planes, arrangement of. -An aeroplane or hydroaeroplane has a separateJy constructed hull surrounding the cockpits which is secured to a framework comprising a central casing 1 and a beam or spar 3 connecting the tail to the casing 1. This casing 1 is of sheet iron, stiffened by angle irons, and carries an engine platform 2, the undercarriage, and the plane spars 4, which extend right across the machine and the beam 3 may be formed as a box girder with fluted webs as shown in cross-section in Fig. 3<a>. The controls pass through this girder. For commercial purposes, a detachable hull provided with a parachute is secured to the framework by three releasable bolts. Shock-absorbers, applications of.-The lower part of the detachable hull which normally rests astride the girder 3 is packed with elastic material to absorb shock on landing.
Patent GB-123248-A (GB)
Title: Improved Tripping Device for Tipping Boxes and the like on Aerial Ropeways.
Inventor: REID WILLIAM JARVIE
IPC: B61B12/02
Filed: 1918-05-28
Abstract: 123,248. Reid, W. J. May 28, 1918. Tip-buckets.-A tripping-device for automatically tipping buckets used for carrying loads along an aerial ropeway comprises a stop 10, Fig. 2, depending from a structure 11 secured to the guide-rope 6. The stop 10 is arranged in the path of an arm 9 carried by the arms 4 which support the bucket 1. The structure 11 carries a guide-pulley 12 for the haulage rope 8 and a counterweighted lever 13 which keeps the rope on the pulley. A stationary guard 14 is provided.
Patent GB-753378-A (GB)
Title: Method and apparatus for the manufacture of fibres of an inorganic thermoplastic material
IPC: D04H1/736
Filed: 1954-03-26
Abstract: 753,378. Glass and other fibres. HOGANAS - BILLESHOLMS AKTIEBOLAG. March 26, 1954 [March 31, 1953], No. 8864/54. Class 56 In making glass, slag or other inorganic fibres by dropping the melt on to a rapidly rotating disc 6 from which the fibres are thrown off, the latter are then subjected to a downwardly directed air stream which forms them into staple fibres and then to a more horizontal air stream whereafter they are coated with a liquid binder or lubricant. The first air stream is formed by blades 16 formed between the overlapping portions of two cones 8, 10 of different angles mounted on the shaft 26 of the disc 6. The second air stream is formed by blades 24 beneath an annular flange 22 at the bottom of the cone 10. The binder or lubricant is admitted by a pipe 20 to a space above a plate 18 within the cone 10 and escapes down the inner wall of that cone through apertures around the plate 18.
Patent GB-126502-A (GB)
Title: Improvements in the Filling or Loading of "Lewis" and like Guns.
Inventor: DUNWOODY JOHN ERNEST
IPC: F41A9/83
Filed: 1918-05-29
Abstract: 126,502. Dunwoody, J. E. May 29, 1918. Cartridge magazines. - Relates to machines of the class described in Specification 114,022 for filling the drum magazines used in the .Lewis gun, and consists in providing (1) a special device for holding up the cartridges in the supply shoot when a drum is being changed, and (2) a special device for preventing a missfeed. In the form of machine shown in elevation and plan respectively in Figs. 3 and 1, the hand-lever g reciprocates a radial arm b which conveys a step-by-step rotation to the drum magazine f through the medium of a spring-controlled pawl o. The arm b carries a projection a which can be moved into the supply shoot c to hold up the cartridges. During normal feed, a pivoted cam m rides over the cartridges in the magazine, but if a missed space occurs, the cam falls and allows a member n to engage and lock a notched plate h connected with the arm b by a pivoted finger l which, by continued, forward movement of the arm b, is moved behind the pawl o to lock it in the teeth of the drum. The drum then follows the hand-lever g during its next backward movement, and the plate h coming against a fixed stop p causes the finger l to be released. The missed space in the drum is then beneath the shoot and is filled on the next forward movement of the hand-lever.
Patent GB-1186510-A (GB)
Title: Improvements in or relating to apparatus for Controlling the Winding of Tapes
IPC: G11B15/58
Filed: 1968-02-23
Abstract: 1,186,510. Automatic tension control systems. SIEMENS A.G. Feb.23, 1968 [Feb.24, 1967], No.8873/68. Heading G3R. Tape handling apparatus comprises an evacuated buffer cassette 4 between a transport roller 2 and a wind/unwindreel 6 which is driven by areversible electric motor 7 controlled by a brake 8, the members 7, 8 being in turn controlled by a device 16 receiving signals from sensing elements 9, 10, 11 which respectively produce a feed command, a stop command and a take-up command for the reel drive. Elements 9, 10, 11 divide the cassette 4 into regions 12, 13, 14, 15, the control arrangement being such that during a winding operation the loop of tape moves between the regions 13, 14, 15 and during an unwinding operation the loop moves between the regions 12, 13, 14. In the former case the brake 8 is released and the motor 7 started when the loop enters the region 15 and these actions are reversed when the loop enters the region 13, the braking action being maintained until the loop once again enters the region 15. For an unwinding operation braking occurs in the region 14 and is maintained until the loop enters the region 12, when the brake is released and the motor 7 started. In switching between wind and unwind operations, depending on the position of the tape, the wind or unwind process continues or the reel is held stationary until the loop enters the region 12 or 15. Thus operation of the system is not affected by transient changes in the direction of tape movement. Apart from the brake 8, which may be of permanent magnet type, the nature of members 9, 10, 11, 16 and 7 is not disclosed.