baber/WOPTO huggingface dataset:
Patent GB-1502165-A (GB)
Title: Semiconductor devices
IPC: H01L29/00
Filed: 1975-04-08
Abstract: 1502165 High frequency transistors SONY CORP 8 April 1975 [10 April 1974 10 May 1974] 14394/75 Heading H1K A bipolar junction transistor is so designed that in operation in a grounded emitter circuit the following conditions are satisfied: (i) the conductance component gp across the emitter junction attributable to recombination of minority carriers in the emitter zone is less than 10 times the component gn attributable to recombination of minority carriers in the base zone, and (ii) the capacitance attributable to minority carriers stored in the emitter is less than that attributable to minority carriers stored in the base. In both embodiments, having lightly doped emitter regions which reduce noise, the emitter efficiency is improved by providing a potential barrier to holes injected into the N-type emitter from the P-type base at a distance from the emitter junction less than the diffusion length of holes in the emitter. The barrier is constituted in the Fig. 3 embodiment, which is formed by conventional epitaxial deposition, ion implantation and diffusion processes, by the interface between region 1a having a thickness of 0À1 Á and a doping of 10<SP>20</SP> atoms/c.c. and epitaxial region 1 having an overall thickness of 0À2 Á and a doping of 10<SP>15</SP>. The base zone 2 is 1 Á thick and has a doping of from 10<SP>16</SP> to 10<SP>18</SP> atoms/c.c. In the other embodiment, Fig. 4, it is formed by a heterojunction between tin doped Ga 1-x Al x As layer 35 and lightly doped narrower band gap GaAs layer 32 epitaxially deposited with collector layer 42 on tin-doped GaAs substrate 41, the base 33 and base contact regions 45 being formed by diffusion of germanium, though the base may optionally be epitaxially deposited. Contacts to the base contact region 45 and to the emitter and collector are of gold-zinc and goldgermanium alloy respectively. The heterojunction incidentally present in the base contact region is said to improve base transport efficiency and reduce noise while that in the collector region reduces surface recombination of electrons in the region.
Patent GB-569700-A (GB)
Title: Improvements in or relating to electrical condensers
IPC: H01G4/228
Filed: 1943-09-03
Abstract: 569,700. Condensers. COZENS, J. H., and TELEGRAPH CONDENSER CO., Ltd. Sept. 3, 1943, No. 14401. [Class 37] A rolled condenser which has multiple part-electrodes 1 cooperating with a single electrode 3 through a dielectric sheet 2, has a connection lug 5 secured to the single electrode opposite that 4 for earth of the part-electrodes to minimize unwanted inductance. All the lugs 5 may be joined by connections of negligible impedance.
Patent GB-596219-A (GB)
Title: Improvements in or relating to the making and testing of internal threads
IPC: B24B19/02
Filed: 1943-09-03
Abstract: 596,219. Making dimension gauges. SHEFFIELD CORPORATION. Sept. 3, 1943, No. 14428. Convention date, Oct. 26, 1942. [Class 83 (ii)] [Also in Groups XIX and XXIII] A method of making and testing an internal thread on a ring gauge or other ring or cylinder consists in positioning a thin strip of material in predetermined relationship to the ring, acting on both the strip and the ring with the threadcutting tool and then removing the strip and examining the thread thereon to obtain information about the thread which has been formed on the ring. In making a threaded ring gauge 10, Fig. 1, the plate 17 is first inserted in a radial slit 11, Fig. 5, in the ring before the thread. is cut and after cutting is removed and examined by optical means. The plate 17 is secured in position during the cutting operation by a bolt 18 passing through the ring and having a slit 19 in which the plate is held by conical washers 21 engaging lugs 20 on the plate. The ring may have two slits 11 and also be provided with a slot 14, Fig. 5, whereby adjustment for wear may be made by means of a bolt 15. In a modification, Fig. 7, a specimen thread is first cut by a grinding-wheel 27 on a plate 32 similar to the plate 17 and carried on a plate 28 fixed to the face-plate 26 on which the ring 10 is held for subsequent cutting by a grinding- wheel. In this arrangement the ring may or may not have a plate 17.
Patent GB-755048-A (GB)
Title: Pig casting machine
IPC: B22D5/02
Filed: 1954-05-17
Abstract: 755,048. Ingot-casting machines. VEREINIGTE ALUMINIUM - WERKE AKT. - GES. May 17, 1954 [Aug. 11, 1953], No. 14459/54. Classes 83 (1) and 83 (4). In a gravity-fed, continuously-rotating pig-casting machine in the form of a. wheel on whioh air or water-cooled moulds are mounted, the moulds are grouped in sectors with the long axes of the moulds of each group disposed tangentially to the wheel. A machine for casting five pigs simultaneously comprises moulds 2 on a wheel 1 driven by a motor 3, a pouring device 5, skimming device 6, a stamping machine 7 and a lifting-off device 8. The pouring device comprises a supply trough 14 mounted in a bearing 15 and a rocking trough 12 with outlet apertures 10 which are spring- pressed against the trough 12 and are verticallyadjustable by screws 13. The skimming device 6, Fig. 5, comprises skimmers 16 on a shaft 17 which may be rotated by a hand wheel 18 or from the drive of the casting wheel, through a cam disc 22, so that the oxide skin is removed at the right moment and is collected in a box 29. The skimmers may be moved horizontally by a curved member 26 driven from the wheel, a rod 27 and a toggle lever 28. Each mould comprises two lifting-out bolts in the bottom, which are engaged to lift the pigs out of the moulds, by a frame beneath each group of moulds, the frames being moved upwardly by engagement with a cam surface. Alternatively the bolts may be raised hydraulically or pneumatically. The lifting-out device then operates, through a series of limit switches, to close compressed-air actuated tongs 42 upon the pigs, move the pigs upwardly by a motor 44, push them together by means of air-actuated pressure-arms 50, carry them to the rotatable table 9 by a motor 46, lower them on to the table, release the tongs and then return to the initial position. The table automatically turns through 90 degrees after each set of pigs has been deposited thereon, so that adjacent layers are displaced 90 degrees. Stamping; forging.-The stamping-device, Figs. 7 and 9, for marking the pigs comprises a beam 36 mounting a series of marking-stamps 35, which are spring-loaded and actuated by a cam-shaft 33 driven from the casting wheel. The beam 36 may be swung for changing the stamps.
Patent GB-507029-A (GB)
Title: Improvements in and relating to rotary pumps of the centrifugal type
IPC: F04D1/06
Filed: 1938-05-14
Abstract: 507,029. Stuffing -box substitutes ; centrifugal pumps. HOLMES & CO., Ltd., W. C., COOPER, C., and HENSHAW, D. M. May 14, 1938, No. 14472. [Classes 110 (i)] and 122 (v)] Fluid seals consisting of one or more annular flanged packing elements 12, Fig. 1, of flexible material are used to separate the rotor chambers 1, 2 of centrifugal pumps having a plurality of rotors for independent parallel flow of fluid. The seal shown in Fig. 2 consists of two opposed elements 12 with alternate metallic and flexible elements 14, 13 secured to a housing 15 by pins 16 to form an insertible unit. The seals are inserted in recesses in the division plate and the pump chamber. Specification 389,653 is referred to.
Patent GB-1532175-A (GB)
Title: Apparatus for applying a tubular insulating housing to an electrical connector
IPC: H01R43/00
Filed: 1977-04-06
Abstract: 1532175 Apparatus for crimping connectors on to wires AMP Inc 6 April 1977 [14 May 1976] 14473/77 Heading B3A [Also in Division F2] Apparatus for applying insulating sleeves 11 to an electrical connection 1 secured to a lead wire 6 comprises a recessed slide 74, 84 which receives a sleeve from a chute 82 to transport it towards the connection 1 as the latter is releasably held in a recess of the lower of two pivotal members 48, 64 once the members have been brought together by the operation of vertical plunger 16. The plunger descent causes jaws 34, 42 to grip the wire 6 and the slide to move to the left whereby it engages the sleeve over the connection as it pivots the members 48, 64 out of the way. Upon retraction the slide receives another sleeve and the connection can be manually removed from the lower jaw 42. The electrical connectors 1, Fig. 1, comprise socket part 3 connected to electrical lead 6 by crimping ferrule 4. When fitted within a respective housing 11, Fig. 2, a rib 13 on the housing engages between the rolled ears 3a of socket part 3, the latter abutting stop 5. The apparatus is stated to be a modified crimping press.
Patent GB-1144921-A (GB)
Title: Improvements relating to audible electrical signalling devices
Inventor: BACON JAMES LAURENCE
IPC: G10K1/066
Filed: 1965-04-06
Abstract: 1,144,921. Door chimes. MORPHYRICHARDS Ltd. 6 April 1966, [6 April 1965], No. 14528/65. Heading G5J. [Also in Division H1] The switch in a solenoid operated door chime comprises a manual operating member, e.g. a push-button 18, held in its undepressed position by a first spring blade 19 attached to a terminal 16, wherein depression of the push-button 18 presses the spring 19 into contact with a second spring blade 21 which is mounted on but insulated from terminal 16 and which contacts a third spring blade 23 extending from the other terminal 15 to form a bridging connection between blades 19 and 23, and wherein further depression of the push-button breaks the contact between the blades 21 and 23 so that a make and then break connection occurs between the terminals. The circuit in the solenoid 5 is thus first made so that the plunger 7 is moved to strike chime bar 2 and then, upon continued depression of the button, is broken so that the plunger 7 moves under the action of compression spring 9 to strike the second chime bar 3. A similar make and break action occurs when the push-button is released. As shown, spring blade 19 is bifurcated and a bridge piece 20 is used to restrain the pushbutton in its undepressed position.
Patent GB-433656-A (GB)
Title: Improvements in and relating to pipe or tube connections
IPC: F16L19/12
Filed: 1934-05-14
Abstract: 433,656. Pipe joints. KREIDEL, H., 6, Moritzstrasse, Wiesbaden, Germany. May 14, 1934, No. 14549. [A Specification was laid open to inspection under Sect. 91 of the Acts, May 27, 1935.] [Class 99 (i)] In a pipe joint of the kind in which a metallic packing ring c is forced by a nut d against the conical bore of a socket f so as to deform it to grip the pipe, the ring has a cutting edge c<1> which is harder than the material of the pipe and which digs into the pipe raising a ridge of metal c<2> without deforming the inner surface of the pipe. The end face c<3> of the ring may be at right angles to its axis or it may have an annular V-groove or it may be chamfered externally. Specification 403,870 is referred to.
Patent GB-878815-A (GB)
Title: Improvements in fire hydrants
IPC: E03B9/02
Filed: 1959-04-28
Abstract: 878,815. Valves; fire-hydrants. JONES & CO. (ENGINEERING) Ltd., SAMUEL, and PHILLIPS C. H. April 8, 1960 [April 28, 1959], No. 14555/59. Classes 69 (1) and 135. In a fire-hydrant the hose nozzle 7 is retained in a slot 12 by a member 15 mechanically connected to a valve operator 9 in such a way that the removal of the nozzle from the slot effects the opening of the valve. The slot 12 which is formed in a bracket 10 clamped to the body 8 of the valve, is provided with a pivot 14 for the member 15 the latter member having a hole 17 just large enough to permit the entry of the end 6 of the nozzle. As shown in Fig. 2, the valve in the off-position and the nozzle located in the hole 17 and the slot 12. In operation, in order to remove the nozzle the latter is lifted by the handle 5 of a cock and in so doing causes a cam nose 16 on the member 15 to depress the valve plunger 9. After a certain movement of the member 15, the cam nose passes over a dead-centre position and thereby brings the hole 17 into a position in which the nozzle can be removed from the slot; stops 18, 19 are provided to limit the angular movement of the member 15. The arrangement may be applied to a screw-actuated valve, the member 15 then being coupled through gearing or a rack-and-pinion drive to the valve spindle.
Patent GB-1069596-A (GB)
Title: Transporting pulverant material through a pipeline in a carrier liquid
Inventor: EVERY RICHARD LOS
IPC: B65G53/30
Filed: 1965-04-06
Abstract: 1,069,596. Conveying solids in liquids. CONTINENTAL OIL CO. April 6, 1965 [April 27, 1964], No. 14573/65. Heading F1R. Pulverant material to be conveyed through a pipe line in a hydrocarbon carrier liquid is first wetted with water then mixed with the carrier liquid to form a slurry which is moved through the pipe line. The material may be reclaimed by separating the water-wet material from the carrier liquid and heating the material to drive off the water.
Patent GB-514952-A (GB)
Title: Improvements in or relating to the manufacture of cast iron
IPC: C21C1/00
Filed: 1938-05-16
Abstract: 514,952. Cast iron. CARBORUNDUM CO., Ltd. (Carborundum Co.). May 16, 1938, No. 14581. Addition to 447,539. [Class 72] In the production of cast iron as described in the parent Specification, the silicon carbide is introduced into the furnace charge in the form of a block or blocks produced from a wet slurry of a mixture of granulated or powdered silicon carbide and a cementitious binding material or compound of silicon carbide in powdered or granular form bonded by means of an inorganic basic cementitious material. The block or blocks may be wholly or partially subdivided by partitions of organic material and the cementitious material may consist of Portland or Sorel's cement or hydrated lime.
Patent GB-867056-A (GB)
Title: Automatic control device for synchronous generators
IPC: H02P9/10
Filed: 1959-04-29
Abstract: 867,056. Automatic voltage control systems. ALLMANNA SVENSKA ELEKTRISKA A.B. April 29, 1959 [May 9, 1958], No. 14593/59. Class 38 (4). In an automatic voltage control system for a synchronous generator 1 connected to a supply network RST, a field 2 of the generator is energized by an exciter 3 having a series field 4 and an opposing regulating field 5 fed through a transductor 7 from a secondary of a transformer 8 connected to the network. The impedance of the transductor 7 is varied by opposing control windings 9, 10, energized via a saturable reactor 13 and a reactor 15 respectively, from a tapping on the primary of the transformer 8. With an increase in the output voltage of the generator above a desired value the current through the winding 9 becomes greater than that through the winding 10 so that the impedance of the transductor 7 is reduced and the current through the opposing field 5 increased to reduce the excitation voltage of the generator 1 and so tend to maintain the output voltage constant. A third control winding 11 on the transductor 7 is fed through a transductor 17 from a tapping on the secondary of the transformer 8. The transductor 17 has a control winding 19 energized from the secondary of the transformer 8 and a control winding 18 energized via a resistor 21 by the voltage across the generator field 2 so that a current passes through the control winding 11 of the transductor 7 tending to limit the reduction in the excitation voltage with a large increase in network voltage.
Patent GB-561842-A (GB)
Title: Improvements in or relating to ampoules
IPC: A61J1/06
Filed: 1942-10-19
Abstract: 561,842. Ampoules. HARRIS, W. S., and HUGHES, Ltd., E. G. Oct. 19, 1942, No. 14596. [Class 81 (i)] Glass and like ampoules having a constricted fracture neck 2 are provided at the fracture point 6 with an insert 4, e.g. of cotton wool or rubber, extending on either side to an extent sufficient to prevent fragments of broken glass &c. from falling into the ampoule.
Patent GB-295930-A (GB)
Title: Improvements in sub-harmonic electric frequency producers
IPC: H03B19/12
Filed: 1928-05-18
Abstract: 295,930. Standard Telephones & Cables, Ltd., (Assignees of Marrison, W. A.). Aug. 20, 1927, [Convention date]. Frequency, changing.-The frequency of an input wave is divided by an integer (or subharmonics are produced) by applying the wave to the grid of a valve, in the plate circuit of which is placed a condenser adapted to be charged cyclically through a resistance. The wave from a generator 7 is applied through a transformer 6 to the grid circuit of a valve 5. The plate circuit includes a reaction coil 10 and three parallel branches, (1) resistances 14, 15 in series, (2) a battery 11 in series with a resistance 12, and (3) a condenser 9 in series with an output transformer 8. The junction point of the resistances 14, 15 is connected to the grid coil through a negativelybiasing battery 13, which brings the working- point of the valve to beyond the lower bend of its characteristic. The plate voltage of the valve is that of the condenser 9, and rises as this condenser is charged through the resistance 12 by the battery 11. At the same time a fraction of this voltage is applied to the grid of the valve. As successive waves of the generator 7 are applied to the grid circuit, these waves rise in voltage owing to the feed-back connection 10; also there is a steady rise in plate and grid voltage due to the charging of the condenser 9. This condenser eventually discharges through the valve, after a train of waves have been applied by the generator 7. The number of waves in this train is dependent, though not critically, on the values of the resistance 12, condenser 9, and bias battery 13. The discharge currents from the condenser 9 are taken off from the transformer 8, which thus supplies a current of sub-harmonic frequency. Two or more stages of frequency division may be connected in cascade, when it is desired to divide by a large integer. The output current is not of sine-wave form and by the use of filters, harmonics may be separated out, thus producing waves of two-thirds, three-fifths, &c. the original frequency.
Patent GB-688488-A (GB)
Title: Improvements in or relating to brushes
IPC: A46B11/06
Filed: 1950-06-13
Abstract: 688,488. Self-feeding brushes; handles. COHEN, E. May 30, 1951 [June 13, 1950; Nov. 29, 1950], Nos. 14695/50 and 29155/50. Classes 19 and 61 (i). A self-feeding brush of the type having a hollow stock defined by a perforated bristle carrying member and a body member which forms or is provided with a handle, the two members interengaging at their periphery, is characterised by having means for individually locating in the hollow relatively small tablets of detergent or antiseptic adapted to be dissolved by water fed through the stock to the bristles. The perforated rubber bristle carrying member of the brush shown fits within a channel in the periphery of the rubber stock. Tablets 23 of detergent or antiseptic which may be of toroidal shape are located in recesses in the hollow formed between the two parts and water may be supplied through a rubber hand grip 20 and a nozzle 17 into the hollow. The tablets when partly dissolved away are held in position by pips 24 or claws on the body. The stock may be rigid and only the channelled periphery flexible and a press stud or screw may be provided to hold the centre of the brush member and stock together. According to the second Provisional Specification the detergent may alternatively be of powder, flake, jelly or paste form and may be held in the hollow in a removable container or cage.
Patent GB-896379-A (GB)
Title: Improvements in or relating to earth working implements
Inventor: HAUSMANN WERNER
IPC: A01B63/114
Filed: 1960-04-27
Abstract: 896,379. Tractor power lift mechanisms. SCHLEPPERWERK NORDHAUSEN VEB. April 27, 1960, No. 14725/60. Class 79(1). In a tractor power lift linkage, for drawing an implement, e.g. a plough, and comprising lower arms 2, the upper arm comprises a cylinder 6 to which the implement is pivoted and a double acting piston 5 the rod 4 of which is pivoted to the tractor frame at 3. The opposite faces of the piston 5 have different effective areas and both sides of the cylinder are supplied with pressure fluid through conduits 21 and 19, the latter being provided with a throttle valve 23. The space 20 of cylinder 6 is, provided with a return line- 24 passing through a piston and cylinder assembly 7 which acts as a throttle valve. A roller 16 trails upon the ground and is mounted on a bell crank lever 17 pivoted to the linkwork, the shorter arm being connected by a flexible cable 15 to a lever 13 pivoted to a cranked portion 12 of the piston rod 4. The piston 8 of the assembly 7 is connected by a rod 9 to a lever 10 pivoted to the crank 10 and locked with respect-to the lever 13 by a ratchet 14. The working depth of the implement is dependent upon the length of the upper link which is determined by the pressure differences in the cylinder spaces 20 and 22 regulated by the control valve 23 and the initial setting of the piston and cylinder assembly 7. The roller 16 follows the ground surface and variations therein cause movement of the lever 17 which actuates the assembly 7 through the cable 15, levers 13 and 10 and rod 9 to vary the rate of flow from cylinder space 20 with consequent alteration of the pressure difference in the spaces 20 and 22 and variation in length of the upper link whereby the working depth of the implement is varied to compensate for ground surface fluctuations. Manual control of the working depth is possible using the lever 10. If the lower arms 2 are raised by the tractor power lift mechanism, the consequent relative movement of the crank 17 supplements the lifting by expanding the upper link.
Patent GB-804598-A (GB)
Title: Improvements in or relating to weeding devices
IPC: A01B39/08
Filed: 1956-05-11
Abstract: 804,598. Agricultural implements. VAN DER LELY N.V., C. May 11, 1956 [May 11, 1955], No. 14732/56. Class 6(1). ). A weeding device comprises a number of weeding units mounted on cranks 33 supported in bearings 31 adjustably mounted in beams 14, 25, each unit comprising a series of tines 43 mounted on a hub 41 rotatable on an axle 40 fixed to a disc 35 adjustably attached to a disc 34 fixed on the end of the crank 33. The two beams 14, 25 are connected by tubes 23, 24 and the device is attachable to tractor lifting links 3, 4, 5. The tines are rotated by contact with the ground and the angle of inclination of the tines with respect to the ground is adjusted by rotating the disc 35 relatively to the disc 34.
Patent GB-244344-A (GB)
Title: Improvements in head rests for travellers and the like
IPC: A42B1/06
Filed: 1925-06-06
Abstract: 244,344. Adolph, P. June 6, 1925. Caps for travellers have a head-rest forming part of the cap. The rest has a hollowed part b<1> to fit the head and a thickened part b to fit the neck. When not in use as a head-rest, the attachment is turned up over the cap and secured by press buttons or the like. The crown a of the cap may be omitted, the headgear then comprising a band and the head-rest. Reference has been directed by the Comptroller to Specification 9603/95.
Patent GB-433335-A (GB)
Title: Improvements in or relating to suction cleaners and the like
IPC: A47L9/24
Filed: 1934-05-17
Abstract: 433,335. Pipe couplings. ABINGDON WORKS (1931), Ltd., GRAY, J., and BRAMLEY, T. B., King's Road, Tyseley, Birming- ham. May 17, 1934, No. 14860. [Class 99 (i)] A hose pipe connection comprises a spigot c fitting within a cylindrical socket f and having a collar d on which are pivoted one or more spring - pressed catches k which engage behind a shoulder h, the collar d and the end of the socket having co-operating ground faces.