baber/WOPTO huggingface dataset:
Patent GB-1312146-A (GB)
Title: Thyristor with added gate and fast turn-off circuit
IPC: H01L29/00
Filed: 1970-07-09
Abstract: 1312146 Semi-conductor devices BORGWARNER CORP 9 July 1970 [31 July 1969] 33472/70 Heading H1K [Also in Division H3] A thyristor is provided with, in addition to a normal turn-on gate on the intermediate p type layer, an additional gate on the intermediate n type layer, the function of the additional gate being to apply a control signal which produces a current flow across the centre junction when the thyristor is turned off and which thereby sweeps out charge carriers which would otherwise take a longer time to recombine when the device is turned off. The turn-off time of the device is thus reduced. In one form (Fig. 3) the Si or Ge thyristor is of generally conventional construction, having an annular cathode contact 11a and a central normal gate contact 12a and being mounted on a Mo layer 41. A further Mo layer may be situated above the semiconductor wafer 40. The additional gate contact is situated on a lapped area 13b which exposes the intermediate n type layer, and to increase the effective area of the additional gate contact a number of such lapped areas bearing interconnected contacts may be provided around the device. Fig. 8i shows an alternative construction in which an Au/Sb additional gate contact 68 is alloyed to an exposed area of a remaining part of an initially uniformly doped n type wafer 60. Masked B diffusion combined with etching or sand-blasting results in an annular p type anode region 64, to which an Al-Si eutectic, Al or B-containing Au contact 66 is applied, and a p type intermediate region 63 bearing an annular Al normal gate contact 67. The n type cathode region of the device is formed by alloying an Au/Sb foil 65 to the p  type region 63.
Patent GB-1042818-A (GB)
Title: Wet-type hydraulic clutch
IPC: F16H61/14
Filed: 1964-08-18
Abstract: 1,042,818. Clutches. BORG-WARNER CORPORATION. Aug. 18, 1964 [Aug. 26, 1963], No. 33754/64. Headings F2C and F2L. In order to avoid drag during disengagement in an hydraulic lock-up clutch for a torque converter, the clutch working chambers are placed in communication to eliminate the effect of centrifugal pressure. In the form shown, the clutch 14 and converter 13 are mounted in a casing 15 which is divided into clutch and turbine chambers 46, 47 by the clutch engaging piston 36 provided with one or more longitudinal orifices 70 located from the clutch axis at a distance of 0À707 of the outer working fluid radius. The side of the clutch disc 35 engaged by piston 36 is formed with intersecting circumferential and transverse grooves 75, 75a, Fig. 6a (not shown), to ensure a continuous flow between chambers 46, 47 through the piston orifices 70 when the clutch is engaged. A selector valve 59, Fig. 7 (not shown), may be fitted in a housing 26 with a pressure regulating valve 69 to control the supply of working liquid from a pressure source 27, the liquid exhausting to a sump 37 via a cooler 68. For clutch disengagement the valve is positioned so that liquid passes from a passage 49 to the clutch chamber 46, through the orifices 70 into the turbine chamber 47 from which it exhausts through a port 48c into a chamber 48 and further passage 48a. The location of the orifices 70 ensures that under such conditions there is no resultant force tending to urge piston 36 in the direction for clutch engagement. To engage the clutch valve 59 is raised so that pressure liquid passes through passage 48 into the converter, and through piston orifices 70 into exhaust passage 49. The piston 36 may be located on the opposite side of the clutch plate 35 and the orifices 70 provided in a plate 80 on the converter side of the disc, Fig. 8 (not shown), or they may be provided in the piston, Figs. 9, 10 (not shown). In further selector valve arrangements, Figs. 11a, 12a (not shown), a relief valve is provided in the converter outlet to ensure an adequate back pressure in the converter.
Patent GB-734569-A (GB)
Title: Improvements in and relating to machines for planting bulbs, onions and the like
IPC: A01C9/02
Filed: 1953-12-04
Abstract: 734,569. Bulb planting machines. KOOYMAN, P. Dec. 4, 1953, No. 33863/53. Class 6 (1.). A machine for planting bulbs comprises a receptacle 1 from which bulbs are fed to a conveyer by means of a reciprocating pusher member 13. As shown, the bottom 3 of the receptacle is reciprocated transversely by levers 4 and the delivery of bulbs is controlled by an adjustable shutter 9. A guide plate 11 is provided and is reciprocated longitudinally of the conveyer. The conveyer consists of a canvas belt 5 on which strips 6 of sponge rubber are mounted. A resilient roll 17 is provided to control the delivery of bulbs to a shoe 16.
Patent GB-992095-A (GB)
Title: Variable displacement pump
IPC: F04B1/12
Filed: 1963-08-27
Abstract: 992,095. Reciprocating pumps. M. A. D'AMATO. Aug. 27, 1963 [Oct. 16, 1962], No. 33931/63. Heading F1A. In a variable displacement swash plate pump, a wear plate 108 Fig. 2, which rotates with the cylinder barrel 38 has a counterbore 122 surrounding the cylinder end of each passage 110 and a cylindrical sleeve 128 seats in each recess and slides in an enlarged portion of each cylinder 40. The tilt of swash plate 44 is adjustable by screw 52 against the action of a back-up piston 56 adjustable by a screw assembly 52, bore 56 being connected to the high pressure side of the pump. Cylinder barrel 38 is fixed to shaft 20, each piston 42 being engaged by a shoe 68, retained in position by a cotter pin 78. Sleeves 128 transmit torque from the barrel 38 to the rotating wear plate 108, e.g. of bronze, whose passages 110 are bevelled to the form of arcuate slots which register with arcuate slots in the fixed wear plate 98 leading to inlet and outlet passages in the casing 16. The differential pressure exerted on the sleeves 128 and pistons 42 tends to move the barrel 38 and shaft 20 towards the taper bearing 29 with greater force at higher pumping speeds thus tending to overcome pump chatter. The force exerted by shoe 68 on abutment 64 is reduced proportionately by admitting pressure fluid to chamber 76. Small holes 102b Fig. 4 in fixed wear plate 98 permit transfer of a small quantity of oil to pre-match the cylinder pressures with the pressures in the inlet and outlet ports thus reducing operating noise. Leakages at the cylinder side of ports 110 are bled through grooves 140, 142 and chamber portion 144 via a duct (not shown) to inlet ports 84. Bearing 22 is lubricated with pump fluid through groove 152 in wear plate 98 which has an outer annular groove 158 vented to the chamber portion 144 through notches 162.
Patent GB-786926-A (GB)
Title: Improvements in unsaturated polyesters
IPC: C08G63/553
Filed: 1955-11-28
Abstract: An unsaturated polyester is the reaction product of (1) a glycol (e.g. ethylene-, diethylene-or propylene-glycol); (2) maleic acid or anhydride; and (3) hexahydrophthalic acid or anhydride; the maleic and hexahydrophthalic acids being present in the molar ratio of 0.6:0.4 to 0.4:0.6.  The polyester may be copolymerized with an ethylenically unsaturated monomer, e.g. styrene or vinyl toluene (o-, m-, or p- or a mixture thereof.  In an example, a polyester is made by heating a mixture of 1:2-propylene glycol and hexahydrophthalic acid to 100 DEG  C., adding maleic anhydride and continuing the heating at 170-200 DEG  C., to produce a resin of acid number 10-60. Later hydroquinone, styrene and methyl ketone peroxide were added, the mixture poured into a mould and the resin cured by heating to 70-110 DEG  C.
Patent GB-1467426-A (GB)
Title: Reflectors for electromagnetic radiation
IPC: H01Q15/18
Filed: 1974-09-05
Abstract: 1467426 Corner reflector assembly DEFENCE SECRETARY OF STATE FOR 5 Sept 1974 [18 July 1973] 34163/73 Heading H4A A two sided array of cube-corner reflectors is described, comprising at least two sizes of reflector, 14, 16, mounted back-to-back, the reflectors being interleaved so that the thickness of the assembly of array 12 and array 18 (not shown) is less than twice the thickness of each array. Each array may be moulded from ABS, the reflecting surface of each corner reflector being coated with aluminium foil, and back-toback pairs are assembled in combination with two end arrays 20 of similar construction comprising reflectors of the same size as reflectors 16. The assembly is supported by tubing 24, the reflectors may be filled with urethane foam, and external protection is provided by a plastics shrouding comprising two covers (26, 28, Fig. 2, not shown), which entirely surround the assembly and may be shaped for minimum aerodynamic resistance.
Patent GB-1492603-A (GB)
Title: Structure for article handling systems
IPC: F41A9/51
Filed: 1974-11-03
Abstract: 1492603 Conveying of cartridges GENERAL ELECTRIC CO 2 Aug 1974 [9 Nov 1973] 34251/74 Heading F3C Articles such as cartridges, are conveyed between longitudinally extending pairs of partitions 14, Figs. 3 and 4, of an outer cylindrical tube or drum 12 by the rotation of an inner cylindrical tube 26, Fig. 1 having members 28 of a longitudinally-extending helix 30. One of each pair of partitions 14, Fig. 4, is provided with a portion 31 and each article has an annular groove 32 to receive said portion 31. Wedging of the articles between surfaces 39, 42, Fig. 3, of prior art partitions 14, 14 (which causes tilting of the articles and, consequently, jamming of the conveyer) is avoided by providing one of the partitions 14 of each pair of provided with a stepped rail 50, Fig. 4, having a face 52 engaged by an end-face 54 of each of the articles. During the conveying of the articles they are guided by the portions 31 and are each rotated about their longitudinal axis by the rails 50.
Patent GB-209277-A (GB)
Title: Improvements in or relating to gas cooking stoves
IPC: F24C13/00
Filed: 1922-12-15
Abstract: 209,277. Pearce, F. R. R. J. Dec. 15, 1922. Gas cooking-stoves; casings; ovens; oven shelves; supports for articles to be heated. - A gas cooking-stove of the type described in Specification 182,028 comprises a stand 1 on which is. mounted a gas ring 2 which heats an oven 4 and also a circulator 3 to which water is supplied from a tank 5 and which is connected by flow and return. pipes 7, 9 to a tank 8 which may be fitted with a steamer 13 and a nozzle 14 for supplying steam to another vessel. Draw-off taps 10, 12 for cold and hot water are provided. Above the gas-ring 2 is a removable semi-cylindrical perforated hood' 16, Fig. 5, on which is a stand 17 for a cooking- vessel. The oven 4 has double walls packed with asbestos and preferably having a sheet of corrugated metal between; it is fitted with perforated' shelves 20 which may be provided on top with wires or a grid to support the dishes, and are formed with beaded edges 21, Fig. 4, sliding in slit tubes 22. A hinged flap 41 in the base carries a gas-ring 42 in an asbestos-lined casing 43 and is turned outwards when required for heating utensils upon it. Above the stove is a structure formed of rods, which comprises a plate-rack formed by the rods 31, 33, and carries a clothesdrier consisting of webs or the like 36 which may be mounted on a spring roller and are fitted with collapsable or other hooks 37 to support rods on which the clothes are hung to be dried by the heat from the oven. A blanket or the like 35 carried on the upper structure absorbs steam and keeps away dust. A pivoted flap 28 at the bottom of the oven door acts as a rest for dishes when in the horizontal position. The metal rods or tubing subjected to heat are whenever possible covered with bamboo to permit of handling. Specification 189,713, [Class 64 (i), Heating liquids &c.], is referred to.
Patent GB-514297-A (GB)
Title: Improvements in or relating to electron multipliers and circuits therefor
IPC: H01J43/30
Filed: 1937-12-10
Abstract: 514,297. Circuits for electron-multipliers. WALTON, G. W. Dec. 10, 1937, No. 34300. [Classes 39 (i) and 40 (v)] In a circuit arrangement employing an electron multiplier with grid-like secondary electron emitting electrodes, a varying voltage superimposed upon a steady potential difference is applied between a control electrode adapted to emit substantially no secondary electrons and a preceding secondary electron emitting grid. In Fig. 2, a carrier wave is applied by coil 11 and tuned circuit 12, 13 between the anode 7 and the preceding grid 6 of the multiplier tube 1. The electron stream from the cathode 2, which may be photo-electric or thermionic, is varied in the rhythm of the modulating signal, and a modulated carrier is taken from the anode circuit at the terminals 16. The steady voltage difference between the electrodes 6, 7 is so chosen that the tube operates midway along the rising portion of the characteristic showing anode current against this voltage difference. Capacity effects within the tube are neutralized by means of a centre tapping on the input coil 12 and a balancing condenser 15 and resistance 14. The carrier may be applied between any of the grids and an immediately-preceding secondary-emitting electrode. Fig. 3 shows an amplifying or modulating circuit in which the signal or carrier is applied between a steady voltage point 18 and a secondary-emitting grid 5, the secondary emission of which is suppressed by a grid 19 situated beyond the grid 5 and held at a lower voltage by connexion to the point 20 on the potentiometer 8. Two or more control electrodes may be employed in a single multiplier so that each controls the secondary emission of a separate preceding electrode. By this means it is possible to achieve mixing of independent modulations. Specification 493,048 is referred to.
Patent GB-1113354-A (GB)
Title: A sound producing device for music boxes and the like
Inventor: KOMATSU FUMITO
IPC: G10F1/06
Filed: 1965-08-11
Abstract: 1,113,354. Musical box. SANKYO SEIKI SEISAKUSHO KABUSHIKI KAISHA. 11 Aug., 1965, No. 34330/65. Heading G5J. In a sound-producing unit for a musical box, consisting of a plurality of metal reeds formed in one piece with a base and struck by pins on a revolving drum C, the axles of at least some of the transmission gears of the drive to the drum are journal led between the upper edges of flanges projecting from base-plate A and concave surfaces in the wall of a casing which is secured to the base-plate and covers the driving spring, transmission and governor. The speed of rotation of drum C is controlled by an expanding rubber disc 29, and the reed-plate has dumb side-reeds which rest on revolving guides integral with the drum C, and so locate the reed-plate. The base-plate A, gears and cover are preferably mouldings of plastics material, the gears being preferably of a low friction material such as nylon.
Patent GB-507425-A (GB)
Title: Improvements in or relating to baths
IPC: A47K3/04
Filed: 1937-12-13
Abstract: 507,425. Baths; panels. COCKBURN & CO., Ltd., M., and HUNTER, R. L. Dec. 13, 1937, No. 34428. [Class 26] [Also in Group X] A bath of the kind provided with a side panel or panels has a butt joint between a panel and an adjacent part of the bath, and a member having a head portion extending on each side of the joint and a stem portion extending into the joint. The stem portion may extend beyond the joint and be secured to a part of the bath so that the head part both conceals the joint and secures the panel in place. This stem portion may if desired extend beyond the joint only at such parts as are to be secured to the bath. In the construction shown the aluminium strip 9 of T-section extends between the edge 8 of the bath and the side panel 6 along the whole length of the bath. The outer surface 11 of the strip is preferably faced with stainless steel and is rounded, and the under surface is recessed so as to grip the panel and hold jointing material when used. The strip is riveted to the bar 13- of L-section which is secured to the lugs 15 of the bath and which extends the length of the bath. The limb 17 prevents any inward bending of the panel. The corner of the bath may be covered by a corrugated white metal corner piece as described in 607,426 that is held beneath the T-shaped strip at its upper edge.
Patent GB-308236-A (GB)
Title: Improvements in and relating to governors for prime movers driven by elastic fluid
IPC: G05D13/00
Filed: 1927-12-20
Abstract: 308,236. British Thomson-Houston Co., Ltd., and Collingham, R. H. Dec. 20, 1927. Centrifugal governors; fluid-relays.-In a fluid pressure prime mover the adjustment of the governor setting to produce an increase in the speed of the prime mover beyond a predetermined value operates mechanism to limit the output of the prime mover. A hand-controlled fluid-relay adjusts the spring-loading of the governor and the sleeve of a pilot valve of a fluid-pressure transmitting mechanism. The invention is described as applied to a turbine driving a generator which may be coupled to two motors driving two propellors for ordinary speeds or to one motor driving one of the two propellors for maximum speed. A worm-driven centrifugal governor 5 operates through a sleeve 6 a lever 9 connected at one end to the pilot valve 30 of a fluidrelay and at the other end to a spring 10 connected to a block 11 which slides on guides 12 secured to the casing. The block 11 is connected by links to a lever 13 operated by a fluid-relay under the control of a hand lever 23. For any position of the lever 23 there is a set position for the lever 13. The governor may operate from full speed to one-fifth of full speed. A piston controls the admission of steam to the turbine by one more inlet valves 42 operated through rack- and-pinion and cam-and-lever mechanism 37 - - 40. The valve 30 slides in movable liner 28 connected to a rod 26 slidable in the casing and provided with an adjustable, spring-pressed collar 24. When upon operating the lever 23 for maximum speed the block 11 is brought to the bottom of the guide 12, the spring 10 is put under maximum tension and the rod 26 through the collar 24 is depressed. This raises the sleeve 35 to supply oil to move the piston whereby a number of valves are put out of action, or the effective area of a main throttle valve is reduced. The position of the lever 13 determines the proportion of the valves or valve area closed, the remaining values or value area being under the control of the governor.
Patent GB-1015952-A (GB)
Title: Improvements in or relating to a new parlour game
IPC: A63F3/00
Filed: 1962-09-10
Abstract: 1,015,952. Board games. A. ORTMANS and J. VELADO-GARCIA. Sept. 10, 1962 [Sept. 15, 1961], No. 34516/62. Heading A6H. Apparatus for playing a board game simulating space travel comprises a board marked with a representation of the solar system and with paths 1, 2, 3 to be traced by playing pieces representing rockets, the progress of the playing pieces over the paths being determined by throwing dice and by rules associated with various markings on the board. The apparatus also comprises two sets of tokens representing money and fuel respectively.
Patent GB-897740-A (GB)
Title: A method and device for determining the dimensions of an object
IPC: G01B11/02
Filed: 1958-10-29
Abstract: 897,740. Measuring thickness photo-electrically. ZEISS-STIFTUNG, CARL, [trading as ZEISS, CARL [firm of]]. Oct. 29, 1958 [Oct. 31, 1957; Sept. 10, 1958], No. 34676/58. Class 40(3). The thickness of an object is determined by photo-electric detection of the movement of the image of a mark projected first on to the surface of a gauge of known thickness and then on to the object. In the arrangement of Fig. 1 the mark is a slit in a diaphragm 3 projected on to the gauge or object and reflected through lenses 7, 8 to the junction of photo-cells 9, 10 the output of which feeds a differential amplifier 14. Initially the gauge is put in place. If the mark image does not coincide with the gap between the cells the cell assembly is displaced vertically until it does when the image of a scale 18 is projected on to a glass plate 21. The workpiece now replaces the gauge. If the workpiece and gauge have not the same thickness the amplifier output drives motor 15 which moves the cell assembly until the mark image falls on the cell junction when the image of scale 18 gives the object thickness directly. The cell assembly may be mechanically coupled to switch arrangements to control machine tools or to classify workpieces. In the arrangement shown in Fig. 2 motor 31, controlled by the photo-cell output, adjusts light deflecting plates 32, 35 simultaneously to equalise the light falling on the two cells and at the same time adjusts stylus 37 to mark a rotating drum. The adjustment of these plates may be coupled to adjust an electric bridge circuit the unbalance voltage of which will indicate thickness. In the arrangement of Fig. 3 (not shown) light reflected from the object passes by two paths chopped alternately to a single cell which gives an A.C. ouput unless the thickness is correct. In a still further arrangement a double image eyepiece in which the images coincide when the gauge is in position but are brought back to coincidence automatically when a workpiece of differing thickness is inserted is used. Fig. 4 shows the device for measuring the thickness of transparent layer 60. The image from the layer-support junction is adjusted by rotation of plate 76 by motor 77 fed from the output of differential photo-cells 70. At the same time variation of the upper surfaces are taken into account by a similar arrangement responding to the image produced at the top surface thus the relative rotation of plate 76, 79 will give an indication of layer thickness.
Patent GB-1308566-A (GB)
Title: Low pressure drop heater for fluids
IPC: C10G9/20
Filed: 1970-07-17
Abstract: 1308566 Fluid heater UNIVERSAL OIL PRODUCTS CO 17 July 1970 [25 July 1969] 34652/70 Headings F4A and F4S In a fluid heater, parallel inlet and outlet headers 10 and 12 are positioned along the top of chamber 1. A series of U-shaped tube sections 14 interconnect the headers and are spaced along the length of the chamber. Burner means 15, 16, 17 set into the end walls 3 of the chamber pass flame on either side of the tubes, and a flue gas outlet 7 extends between the headers. A convection section 8 may be provided containing reheat tubes 31. The headers have spring supports, Fig. 3 (not shown), so that they and their depending U-tubes can accommodate expansion and contraction to reduce stress.
Patent GB-504653-A (GB)
Title: Improvements in or relating to cigarette collecting mechanism for use on cigarette-making machines
IPC: A24C5/32
Filed: 1937-12-15
Abstract: 504,653. cigarette-making machines. RUAU, F. F., and MOLINS MACHINE CO., Ltd. Dec. 15, 1937, No. 34758. Divided out of 504,652. [Class 130] In mechanism for collecting cigarettes, of the kind in which cigarettes severed from a continuous rod and spaced axially on a conveyer band are moved laterally from the band by a deflecting element, and in which an abutment determines the extent of axial movement of the cigarettes from the cutting mechanism, the axial movement of the cigarettes on the band is continued during their lateral movement until or almost until they engage the abutment. As shown, a rotatable member 23, mounted on a shaft 24 and carrying plates 25 to which bars 26 are secured, delivers the cigarettes laterally from a band 8 on to a collector belt 13. The leading cigarettes are moved laterally by surfaces 27 on the bars 26, whilst the succeeding cigarettes are moved laterally by surfaces 28 on the plates 25. The width of the band 8 is such that the cigarettes are supported by it whilst being moved laterally until they engage abutments which are formed by a stationary plate 29 and by the ends 30 of the bars 26. The cigarettes rebound towards stops 18, 20. To arrest any upward movement imparted to the cigarettes, hanging pieces of felt 21 may be provided above the belt 13. In a modified construction, the stationary abutment 29 is replaced by an abutment secured to the bar 26. Specifications 345,484, 371,113, 420,158, and 420,821 are referred to.