baber/WOPTO huggingface dataset:
Patent GB-696644-A (GB)
Title: Improvements in printing plates
IPC: B41N1/20
Filed: 1950-06-30
Abstract: 696,644. Printing-surfaces. HOE & CRABTREE, Ltd., R. June 30, 1950 [July 1, 1949], No. 16458/50. Addition to 685,231. Class 100(ii) For forming the composite printing plate of the parent Specification, comprising a thin plate of magnesium alloy secured to a semi-cylindrical support or dummy of rigid material, the dummy is itself equipped with means at its straight edges for stretching the thin plate about the dummy and for holding it stretched. The cast magnesium alloy printing plate 2 is formed with grooves 3 forming a slight shoulder 4 at each end of the plate, and the semi-cylindrical dummy 1 of steel or like rigid material has one rounded straight edge 5 with a slot 6 and undercut groove 7 into which the end 4 of the plate 2 is slid endwise. The other end 4 of the plate 2 is held in a slot 11 and groove 12 in a bar 10 which seats against the concave other end 15 of the dummy 1, the bar 10 being rotatable through about 180 degrees, to the position shown, to stretch the plate 2. The bar 10 is rotated by a handle 19 on a bar 18 having pins 17 which fit into bores 16 in the bar 10, the dummy 1 being recessed at 20 to accommodate the pins 17. The bar 10 is secured in the position of stretch as shown bv ball headed screws 21 which pass through slots 22 in the plate 2 to seat in sockets 23 with slotted openings 24 in the bar 10 and therethrough to engage threaded bores 25 in the dummy 1.
Patent GB-1175122-A (GB)
Title: Improvements in and relating to Semiconductor Devices
IPC: H01L23/04
Filed: 1967-04-11
Abstract: 1,175,122. Semi-conductor devices. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. 11 April, 1967 [14 April, 1966 (2); 18 March, 1967], No. 16566/67. Heading H1K. A semiconductor device 7 is connected through one electrode to an end 6 of a supporting connecting pin 4, which is shielded from a second connecting pin 2, linked through a conductor 8 to a second electrode 14 of the device 7, by a reaction 10 of a third connecting pin 3. The third pin 3 also has a section 12 disposed on the opposite side of the device 7 to the shielding section 10, a third electrode 15 being connected to the section 12 through a conductor 9. An envelope 5 comprising, e.g., a solid mass of a thermosetting or thermoplastic material which may be laminated, a hollow gas-filled insulating shell of a material such as glass, ceramic &c., or a metal shell, completely surrounds the arrangement. The pins 3, 4, 5 may be flat, coplanar strips, or wires which are flattened at the contact areas. The shielding section 10 may extend out of the envelope to provide a fourth point of contact. The pin 3 may provide further shielding between the pins 2, 4 at the point where all three emerge from the envelope, or alternatively the pin 3 may emerge at rightangles to the other two pins. In either case the pin 3 may be connected to the electrode which is common to both input and output circuits, e.g. the emitter or base of a conventional transistor. The supporting pin 4 may be connected to the collector contact. Field-effect transistors of either insulated-gate or junetiongate types may be accommodated by the invention. The form of the device may be planar, mesa or alloy-diffusion. Electrodes are applied by alloying or vapour deposition, and the conductors 8, 9 can be joined thereto by thermocompression bonding or ultrasonic welding. The device 7 is connected to the supporting pin 4 by soldering and/or alloying. Suitable materials for the pins 2-4 include Ni wires, Fe/Co/Ni alloys, or Au plated strips, and the conductors 8, 9 may be Au or Al wires.
Patent GB-1022761-A (GB)
Title: Pulse radar equipment having a pulse compression system
Inventor: MCQUEEN JACK GORDON
IPC: G01S13/28
Filed: 1961-05-08
Abstract: 1,022,761. Pulse radar. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. May 8, 1962 [May 8, 1961], No. 16733/61. Heading H4D. In a frequency modulated pulse radar system the received echo signals are subjected to both a delay and an adjustable phase shift so that the separate frequency components are coincident, in time, at a wide bandwidth adder and detector circuit. The transmitted pulses have a uniform amplitude but each pulse is frequency modulated, in uniform steps, to produce a " staircase " waveform. At the receiver, the echo signals are fed simultaneously to a number of separate channels each of which accepts one of the frequency components, or steps, of the pulse. Each channel includes a separate delay circuit which cause the individual frequency components to be coincident. To provide a correct phase relationship between the component signals of each pulse, measurement of the phase relationships between the components is measured, at the receiver, and the phases of the remaining components are adjusted to correct deviations. One of the frequency components is chosen as a reference and the others are adjusted to correspond. The measurement of the phase deviation of the frequency components of each pulse is effected on the transmitted pulse and the derived phase differences are stored and applied to correct the components of the corresponding echo. Measurement of phase error in the transmitted and echo pulses is effected by the same circuit.
Patent GB-126240-A (GB)
Title: Improvements in Line-spacing Mechanism for Typewriting Machines
Inventor: FAIRWEATHER WALLACE CRANSTON
IPC: B41J19/76
Filed: 1918-10-15
Abstract: 126,240. Fairweather, W. C., (Underwood Typewriter Co.). Oct. 15, 1918. Line-spacing mechanism. -In mechanism in which two ratchet-wheels having different numbers of teeth are provided, a single pawl is arranged to be shifted into engagement with either ratchet-wheel, and individual detents, which may be controlled by the pawlshifting device, are provided for the ratchetwheels. As shown, a dog 5 can be shifted laterally by a hand-lever 14 to bring a tooth 13 on the dog into register with either of two ratchet-wheels 1. 2 secured to the platen-shaft 3, the wheel 2 having a greater number of teeth than the wheel 1. The dog is pressed downwards by a broad spring 5<a>, and a stop 36 is provided for arresting the dog. The dog is mounted on a pin 6 secured to a slide 7 which is operated by the usual linespacing lever and returning-spring 11. The handlever 14 is pivoted at 15 and provided with two depending pins 17 which straddle a rib 18 on the dog and engage a humped spring 19 for retaining the parts in the set position. During part of the travel of the dog, the tooth 13 is held out of engagement with the ratchet-wheels by a support 32 which can be adjusted to vary the line-spacing. The support is secured to a slide 28 which can be moved to the front or the rear by a hand-lever 29, and is held in the set position by a spring detent 33 engaging recesses 35. The support is of sufficient length to engage the tooth in either of the lateral positions of the dog, and is preferably reduced in width at the part that is over the ratchet-wheel 2 to compensate for the difference in pitch of the teeth on the ratchet-wheels. The hand-lever 29 is set with reference to indicating- numerals 38 on the hand-lever 14, the numerals being arranged in two columns which are visible, a column at a time, through, a slot 39 in the casing 40. The ratchet-wheels 1, 2 are provided with detents 20, 21, respectively, arranged so that the operative ratchet-wheel is engaged by its detent. the other detent being diesngaged. The detents consist of levers, which are pivoted on the pin 25 and are provided at the top with rollers engaging a cam-slot 26 in the hand-lever 14. The detents are engaged by springs 23 and are provided with rollers 22 for engaging the ratchetwheels.
Patent GB-771004-A (GB)
Title: Improvements relating to electrical transmission line arrangements
Inventor: NICOLL JOHN HENRY
IPC: H01P5/04
Filed: 1954-06-08
Abstract: 771,004. Transmission line networks. BRITISH THOMSON-HOUSTON CO., Ltd. June 3, 1955 [June 8, 1954], No. 16830/54. Class 40 (8). A transmission arrangement comprises a pair of coupled, parallel transmission lines, e.g. waveguides 1, 2, connecting two inputs A, D to two outputs B, C, a variable constantphase division of power between the outputs being achieved by means of differentially operated phase-shifters 5, 6 in the parallel lines. The lines are connected at spaced points by two 3 db. couplers 3, 4 in such a manner that, when the phase-shifts in the paths are equal, all the energy from the input A appears at B. Operation of the phase-shifters 5, 6 (e.g. by a motor 9) causes an advance in phase in one path and a corresponding lag in the other, the result being a variable division of power between the outputs B, C. The phaseangle between the input A and the two outputs B, C remains constant. Division of energy from the input D between outputs B, C is effected in a similar manner. If the inputs to A and D are in quadrature and the phaseshifters are varied cyclically, the output amplitudes at B and C will vary cyclically between the algebraic sum and the algebraic difference of the input amplitudes. One of the outputs may be terminated by a dummy load and the arrangement used as a constant-phase attenuator. Specification 752,590 is referred to.
Patent GB-1154201-A (GB)
Title: Improvements in or relating to Safety Harnesses for Vehicle Occupants
Inventor: DAVIES IVOR JOHN
IPC: B60R22/02
Filed: 1965-04-21
Abstract: 1,154,201. Safety harness. TELEFLEX PRODUCTS Ltd. 6 June, 1966 [21 April, 1965], No. 16874/65. Heading A3V. A safety harness consists of a lap strap 16, 22 joined by connector 18 and anchored at points 11, 12 and a diagonal strap 16 which is anchored at point 14 and is a continuation of the lap strap 16, the strap 16 passing through a snubbing buckle which locks under tension in either length of webbing 16. The lap strap 22 may be stiffened, e.g. by strips of tempered steel, and the harness may be adjusted first by buckle 17 and then by buckle 19 at the anchor point 14. In a second embodiment (not shown) the strap 22 is unstiffened and may be adjusted by a buckle at the anchor point 12. In a third embodiment (not shown) the diagonal strap 16 passes through a slip ring at the anchor point 14 to an inertia reel which locks in response to vehicle and/or strap acceleration or to a manually operated reel. In a modification (Fig. 5) a double thickness or loop of the strap 16 is taken through the snubbing buckle 17 instead of a single strap thickness so that the lap strap and diagonal strap can be adjusted independently or together by pulling on either one of the sides of the loop or by pulling the loop as a whole.
Patent GB-208179-A (GB)
Title: Improved apparatus for exhibiting advertisements and other announcements
IPC: G09F21/18
Filed: 1922-06-19
Abstract: 208,179. Junghans, H. June 19, 1922. Moving gases and liquids, utilizing; actuating. -The surface of water in rivers, ponds, &c. is agitated in designs &c. for advertising or signalling purposes by forcing a fluid through orifices in tubes of the required configuration located just beneath the surface of the water. Fig. 2 shows perforated tubular letters, preferably removable and changeable, connecting two anchored pipes a to which air or water is supplied under pressure. The tubes may be simply porous, and the apparatus is preferably painted a colour similar to that of the water. Fig. 7 shows a modification in which the design is formed of channelled members d the top edges of which are flush with the water surface and the water in which is maintained in a state of ebullition by fluid injected by pipes c<1> from a conduit h. The fluid may be supplied continuously, or be controlled by hand or automatically to agitate the water intermittently, or parts thereof, in succession. A form mounted on a floating frame and adapted to be towed behind a ship is channel-shaped as in Fig. 7, but is perforated at the sides or has flared curved tubes b<1>, Fig. 5. This form may be constructed for actuation also when at rest. The invention comprises the employment of self-igniting gas, such as phosphoretted hydrogen, either alone or in conjunction with a combustible gas such as acetylene. Fig. 8 shows a submerged buoy divided into two compartments i, k containing either the two gases under pressure or means for generating the gases. A simple flame may be produced at the surface, or the gases may issue through perforations in tubes shaped as signalling arrows, numerals, &c. The igniting gas or both gases may be supplied continuously or intermittently. In a further modification a smoke or mist signal or advertisement is produced by the use of phosphorus pentoxide.
Patent GB-1461925-A (GB)
Title: Tubular heat exchangers
IPC: F28F9/02
Filed: 1974-04-18
Abstract: 1461925 Tubular heat exchangers BORSIG GmbH and R KRUEGER 18 April 1974 16974/74 Heading F4S A heat exchanger comprises housing containing a group of tubes 10, an inlet header 2 at one end of the housing and an outlet header 15 at the other, said headers having a respective inlet 1 and outlet 19 smaller in area than that of the housing, and both said headers decreasing in cross-sectional area from the housing towards said inlet and outlet openings, the inlet header containing a hood 4 with openings 5 in the wall thereof and spaced from the header wall 3 providing a channel 7 which fluid enters as shown by arrows in Fig. 2. Such fluid may rejoin the mainstream via ports 12 in the inlet duct 1, or, as shown in Fig. 4, it may be conveyed via the outer ring 11 of the tubes 10 to a space within the outlet header 15 defined by a baffle 16, from which space it is withdrawn by a jet pump arrangement shown as incorporated in the outlet duct 19. The intention is to reduce eddy currents and to unify the rate of fluid flow in the tubes 10 in particular where a uniform dwell time of the fluid passing through the tubes is of significance. Fluid distribution is said to be further improved by providing a deflector 9 in the throat of the inlet header.
Patent GB-1436526-A (GB)
Title: Process for making eletrophotographic image by use of photo conductive particles
IPC: G03G15/22
Filed: 1974-04-18
Abstract: 1436526 Electro-photography FUJI PHOTO FILM CO Ltd 18 April 1974 [7 May 1973] 17043/74 Heading G2H  Developed electro-photographic images are produced by forming a plurality of layers of photo-conductive toner particles on an insulating or insulating-surfaced substrate, charging their surface in darkness, exposing imagewise so that portions of the layer near the substrate acquire a charge, neutralizing the remaining charge at the surface and removing particles to leave an image of charged particles against the substrate., Alternatively the layers may be formed entirely of charged particles, some of which lose their charge on exposure. The developed images so formed can be fixed by heat, or by spraying with a solvent.
Patent GB-836321-A (GB)
Title: New or improved automatic control means for a forced lubricating oil system of a fuel injection pump for an internal combustion engine
IPC: F02M59/00
Filed: 1958-05-28
Abstract: 836,321. Lubricating. DAIMLER-BENZ A.G. May 28, 1958 [July 2, 1957], No. 17065/58. Class 12 (3). An automatic control means for a forced lubricating oil system of a fuel injection pump, e.g. a petrol injection pump 11 of an I.C. engine, comprises a lubricating oil feed pump 12 which is driven by the shaft 10 of the injection pump 11 and sucks oil through a pipe 13 from an oil sump 14 and delivers it, through a pipe 15, to the lubrication points of the injection pump. The suction pipe 13 is also connected, by a pipe 16 and a valve 17, to the forced lubricating oil circulation system of the I.C. engine to ensure that sufficient oil is always maintained in the injection pump oil system. The valve 17 comprises a hollow piston 18 slidable within a cylinder 19, chambers 21, 22 at the right- and left-hand ends respectively of which are connected by pipes 20, 16 to the delivery side of the pump 12 and the lubricating system of the I.C. engine. The port opening in the cylinder 19 for the upper portion of the pipe 16 corresponds with a slot in the piston 18 so that engine lubricant constantly, with the aid of a spring 23, urges the piston 18 toward the left against the pressure of the oil from the pump 12 in the chamber 21. When the pump 12 supplies oil at normal pressure, the piston 18 is located toward the right to close the port opening for the lower part of the pipe 16. If the pressure from the pipe 12 falls below a certain value, the engine oil pressure predominates and pushes the piston 18 to the left so that engine oil flows through the lower part of the pipe 16 to the suction side of the pump 12. Subsequent rise in pressure on the output side of the pump 12 will displace the piston 18 to the right to shut off the lower part of the pipe 16. A check valve may be incorporated in the pipe and the piston valve 17 may be replaced by a diaphragm device. In a modification, Fig. 3, two piston elements 31, 32 of a piston valve 30 working in a cylinder 29 are acted upon by the pressures from the pump 12 and the engine respectively. The elements 31, 32 control three ports in the cylinder 29 so that the suction side of the pump 12 is either connected with oil from the sump 14 of the pump 11 or from the engine. A spring 34 is situated in the left-hand compartment of the cylinder. The pump 12 and the valve structures may be combined with the housing of the injection pump.
Patent GB-1507371-A (GB)
Title: Forced-convection oven
IPC: F24C15/32
Filed: 1975-04-24
Abstract: 1507371 Forced-flow ovens ZANUSSI GRANDI IMPIANTI SpA 24 April 1975 [18 May 1974] 17099/75 Heading F4W In a forced-flow oven comprising a combustion chamber 10 housing a burner 13, a food heating chamber 8 and a chamber 9 housing a fan impeller 17, having an inlet 16 in communication with the chamber 8, and having outlets communicating with an oven gas outlet 11 and with the chamber 8; a duct 15 directs a mixture of combustion products and heated air from the burner 13 to the chamber 8, and extends through the chamber 9, whereby the impeller 17 draws the mixture through the duct 15, chamber 8 and inlet 16 and directs the mixture into the chamber 8, towards outlet 11 and into admixture with the flow from the burner 13 to cool the flow. In the form shown, the flow from chamber 9 towards the outlet 11 is subdivided into flows 26, 27 through outlet 11 and duct 15 respectively by impact with a wall 14, which may include one or more baffles (Figs. 4, 5). The flow 27 forms a screen which prevents flow directly from the burners 13 to the outlet 11. A thermostatic device is located in the outlet 11 to detect temperature rise, which will occur if the fan impeller fails, and to cut-off fuel supply to the burner. In another embodiment (Fig. 6), the outlet 11 leads directly from the fan chamber 9, and the duct 15 is perforated so that the gases in chamber 9 flow directly into contact with the flow through duct 15. In the latter embodiment, two impellers 17 may be provided in, chamber 9, with the duct 15 extending between the impellers (Fig. 7).
Patent GB-792766-A (GB)
Title: Improvements in electrodes for spot welders
Inventor: WARING FRANK EDGAR
IPC: B23K11/30
Filed: 1955-06-15
Abstract: 792,766. Welding by pressure. TRIANGLE PRODUCTS, Ltd. May 10, 1956 [June 15, 1955], No. 17170/55. Class 83 (4). A replaceable electrode tip 1 for a spot welder is provided with means for passing a cooling fluid through it transversely, near its operative end, the means being adapted for connection with flexible flow and return conduits for the cooling fluid. In Fig. 1 the copper tip 1 has a copper tube 3 brazed into a diametral passage 2, the ends 4, 5 of the tube being bent to lie parallel with the tip. Rubber &c. tubes or articulated tubing may be connected with the ends 4, 5. The ends 4, 5 may be at an angle to the tip as in Fig. 3. Alternatively two separate conduits may be brazed to the tip at each end of the passage 2. The tip may have a tapered end for entry into a taper socket. According to the Provisional Specification more than one transverse passage may be provided.
Patent GB-476893-A (GB)
Title: Improvements in or relating to clutch mechanism for sewing and similar machines
IPC: D05B69/12
Filed: 1936-06-20
Abstract: 476,893. Motor driving-arrangements. ALLBOOK & HASHFIELD, Ltd., and HASHFIELD, P. June 20, 1936, No. 17179. [Class 35] [Also in Groups XXIV and VII] The armature shaft 5 of an electric motor 2 for driving sewing and similar machines, carries a disc 6 with which a friction disc 7 mounted on a shaft 3 is adapted to be brought into engagement by actuating a lever 8 which also carries a braking device. According to the invention, the shaft 3 is carried by a bracket 1, the other end of which is of cylindrical form to fit and be fixed to the outer curved surface of the motor casing.
Patent GB-516767-A (GB)
Title: Improvements in or relating to the treatment of sulphites
IPC: C01B13/18
Filed: 1938-06-09
Abstract: 516,767. Furnaces. ILLINOIS, BOARD OF TRUSTEES OF THE UNIVERSITY OF. June 9, 1938, No. 17181. Convention date, June 14, 1937. [Class 51(ii)] [Also in Group III] Sulphites are decomposed into oxides and sulphur dioxide by passing the finely divided sulphite 'into the top of a vertical chamber having heat-radiating walls, the temperatures of which are' sufficient to heat the sulphite above the decomposition temperature, the hot oxide being withdrawn from the bottom of the chamber and sulphur dioxide together with a little suspended oxide being withdrawn from near the top of the chamber. The finely divided sulphite is fed from the hopper 5 into the chamber 12 having heat-radiating walls, the liberated oxide falling to the hopper 18 and the sulphur. dioxide and suspended oxide going to the separator 24 the sulphur dioxide being collected from vent 26 and the oxide passing through the pipe 25 to be mixed with the other oxide and discharged through the port 22.
Patent GB-600789-A (GB)
Title: Improvements in or relating to electro-magnetic relays
IPC: H01H50/16
Filed: 1945-07-06
Abstract: 600,789. Electromagnetic relays. TELEFONAKTIEBOLAGET L. M. ERICSSON. July 6, 1945, No. 17356. Convention date, July 12, 1944. [Class 38 (v)] The core 11 of a relay is of substantially cylindrical shape and is formed together with mounting flanges 15, 16 and polepiece 12 from a single piece of iron strip. Shoulders 23 retain the winding, and spring sets actuated by an armature 13 are mounted on tabs 14, Fig. 3 shows an alternative core section of greater area. The relay may be secured to a panel, which is slotted to receive the flanges 15, 16 by a curved spring inserted between lips 17.