baber/WOPTO huggingface dataset:
Patent GB-1526816-A (GB)
Title: Recording or erasure of images on thermo-plastic material
IPC: G03G5/022
Filed: 1975-11-21
Abstract: 1526816 Thermoplastic image recording/ erasing; automatic control HOECHST AG 21 Nov 1975 [25 Nov 1974] 47974/75 Headings G2X and G3N Images on thermoplastic recording materials are recorded or erased by supplying an adjustable quantity of heat for reaching a required development or erasure temperature in inverse relation to the temperature of the recording medium at the beginning, sensing directly or indirectly the temperature of the recording medium and discontinuing the supply of heat when a predetermined development or erasure temperature of the recording medium is reached. As shown (Fig. 2) a recording material 29 comprising a photo-conductive thermoplastic layer on a polyester support is developed by a heater 5 comprising a conductive layer on a glass plate. Heater 5, fixed resistors 6, 7 and variable resistor 8 form a bridge circuit 8 to which heating current from a source 34 is supplied and from which an output voltage is tapped off at terminals 3, 4 and fed to a control 33 comprising an amplifier 13 which is connected via a low pass filter 14 and a photo-electric coupler 15 to a comparator. When the signal voltage fed to the comparator is the same as a reference voltage, the heating current is switched off by a relay 22. In alternative embodiments heating is effected by an A.C. source, Fig. 3 (not shown) or a timecontrolled pulse voltage, Fig. 4 (not shown).
Patent GB-1492927-A (GB)
Title: Sheet material cutter
IPC: B26D1/30
Filed: 1973-10-15
Abstract: 1492927 Cutting apparatus C S E AITKEN 10 Jan 1975 [15 Oct 1973] 47990/73 Headings B4B and B5E A cutter for sheet material, e.g. asbestos, plastics or slate comprises a strip 1 of generally rectangular cross-section steel presenting a relatively narrow cutting face 9 and relatively wide side faces 3, 4 and having a handle 6 at one end and, at the other end, a pair of trunnions 7. The trunnions are in the form of a pin welded in the strip and are arranged to co-operate with the undersides of a pair of support members 11. The support members are spaced apart laterally to just clear the blade strip. In operation, the cutter is pivoted downwardly to effect a cut in the material 10, Fig. 3, the cutter then being progressively moved along the kerb to change the pivot point. The cutting edge 2 may be transversely hollow ground.
Patent GB-1404584-A (GB)
Title: Liquid fuel injection pumping apparatus for an internal  combustion engine
IPC: F02M59/00
Filed: 1971-10-15
Abstract: 1404584 I C engine fuel supply, measuring valves CAV Ltd 6 Oct 1972 [15 Oct 1971]  48020/71 Heading F1B Fuel from an accumulator 10, supplied by a pump 9, e.g. engine driven, is fed to an outlet conduit 14 via valves 16, 17, 19, 20 and a cylinder 11 containing a shuttle 12. The valves are operated by a solenoid 25 and armature 26, the solenoid, when energized, permitting the valve member 19 to engage the seat 20 and causing the valve member 16 to move from its seat on the member 17. Fuel flows through the passage 22 in the member 17 to one end of the cylinder 11 and the shuttle 12 is moved against the bias of the spring 13 to deliver fuel to the conduit 14 and an injector 15. When the solenoid 25 is de-energized the valve member 16 closes the passage 22 and the valve member 19 is moved from the seat 20 to permit the shuttle 12 to be moved by the spring 13. The fuel delivery by the shuttle may be controlled by the time during which the solenoid is de-energized and thus the starting position of the shuttle. A piston 24 subject to accumulator pressure provides fuel pressure balancing of the valve member 16. The conduit 14 may be connected in turn to a plurality of injectors (31), Fig.2 (not shown). The effective delivery stroke of the shuttle (32), Fig.2, may be terminated by providing communication of the delivery end of the shuttle cylinder with the cylinder of a spring-biased pressure-relief piston (36) through a passage (33) in the shuttle. At a predetermined shuttle position the shuttle passage (33) allows fuel to flow into pressure-relief cylinder, the fuel being discharged from the cylinder to a drain through a groove (38) in the shuttle towards the end of a return stroke of the shuttle by the spring 13. An extension (39), Fig.2, of the valve member 19 is subject to accumulator pressure to provide fuel pressure balance of the member 17.
Patent GB-1165941-A (GB)
Title: Fuel Injection Pumps
Inventor: ROOSA VERNON DAVIS
IPC: F02B3/06
Filed: 1966-10-27
Abstract: 1,165,941. Fuel injection pumps. V.D. ROOSA. Oct.27, 1966 [Nov. 1, 1965; Dec.9, 1965], No.48237/66. Heading F1A. In a rotating distributer type fuel injection pump the plungers 44 are mounted in a bore 42 in the distributer 14 and actuated by a cam ring 50 which is angularly adjustable in the cylindrical housing cavity 49 by means of a piston 102 to vary the timing of injection. The cam ring is split across the bore 101 in which the end 120 of the connector 115 to the piston 102 is mounted and is deflectable outwardly during the pumping strokes of the plungers 44 to engage the surface of the cavity 49. The surface of the cavity is roughened, e.g. knurled or grooved, and the engagement between the ring 50 and the cavity provides resistance to angular movement of the ring during the plunger pumping strokes. Fuel is supplied to the distributer bore (42, Fig. 1, not shown), from a vane feed pump (18) via an air separator chamber (26), a regulating valve (32, Fig. 3, not shown), which regulates the output pressure of the feed pump in accordance with speed and a metering valve (34) operated by an adjustable centrifugal governor (31). The timing piston 102 is subject to the output pressure of the feed pump in the chamber 113 under the control of a pilot valve 105, biased by a spring 109 and the output pressure of the feed pump in piston chamber 106 in opposition to the spring 109. The spring 109 abuts a piston 125, biased by a spring 126 mounted in chamber 127 which is connected to a groove (51, Fig. 1, not shown), on the distributer (14) in the flow path of fuel from the metering valve (34) to the bore (42). The pressure in the chamber 127 will be dependent upon the position of the metering valve (34) and therefore the load on the engine and the pressure in the chamber 113 will be dependent on speed. The operation of the piston 102 will therefore control the injection pump timing in accordance with engine speed and load.
Patent GB-1318766-A (GB)
Title: Noise suppressor for jet aircraft engine exhaust gases
IPC: B64F1/26
Filed: 1970-10-12
Abstract: 1318766 Silencing jet engine exhaust C D SMITH 12 Oct 1970 [5 Nov 1969] 48419/70 Heading F1B A silencer for jet engines in aircraft comprises a chamber for receiving engine exhaust gases and doors 15 mounted on a wall 12 of the chamber for horizontal movement to effect a seal against the aircraft fuselage or engine nacelle. The resilient sealing members 30 are carried by panels 27 mounted for vertical and horizontal movement relative to the doors 15 by spring hangers 34. Hinged lower portions of the panels 27 provide for sealing against the indented underside of the aircraft. The doors 15 are movable on rollers 16 by pneumatic cylinders 23 and engage the wall 12 through rollers 21. Air enters the chamber to mix with the exhaust gases past baffles 48, 49, and sprays 50, Fig.5, inject water into the gases upstream of diverging tubes 52, one for each exhaust jet. The tubes 52 contain respective water spray assemblies 54, Fig. 3, and exhaust gases leaving the tubes are deflected by a baffle 60 to an outlet 62 containing baffles 65. The front, rear and side walls 12, 46, 45 of the chamber are formed of panels (70), Figs.6A and 13 (not shown), mounted between vertical columns (68) carrying exterior metal plates (69). The panels (70) each comprise a channel perimeter frame (72) containing a corrugated and perforated front metal plate (74) and having a metal back plate (73) with a woven fibre-glass blanket (75) and loose fibrous material (76), e.g. fibre-glass or rock wool, therebetween.
Patent GB-1357280-A (GB)
Title: Purification of 2,3,5-trimethyl hydroquinone
IPC: C07C37/84
Filed: 1972-10-20
Abstract: 1357280 Purification of 2,3,5 - trimethyl hydroquinone KURARAY CO Ltd 20 Oct 1972 [5 Nov 1971] 48490/72 Heading C2C Crude 2,3,5 - trimethyl hydroquinone is purified by dissolving it in an organic solvent comprising an ester, a ketone, an ether or an aliphatic alcohol, then adding a liquid hydrocarbon (e.g. pentane, hexane, octane, cyclohexane, cyclohexene, benzene, toluene, xylene or a mixture thereof) to the solution to precipitate the crystalline 2,3,5-trimethyl hydroquinone and separating the crystals -of 2,3,5- trimethyl -hydroquinone.
Patent GB-1485948-A (GB)
Title: Scaffolding fitting
IPC: E04G7/18
Filed: 1974-09-02
Abstract: 1485948 Clamps WCB CONTAINERS Ltd 2 Sept 1974 [18 Oct 1973] 48616/73 Heading E2B A clamp for securing mutually transverse scaffold tubes 10, 11, 12 comprises a pair of three-pronged dished jaws 13, 14 held in gripping position by bolt 16 and welded-on nut 15. Loss of the bolt is prevented by a cord 17 and stop 18.
Patent GB-1148082-A (GB)
Title: Writing instrument
Inventor: TESSIER ARAM JOSEPH
IPC: B43K24/06
Filed: 1966-10-31
Abstract: 1,148,082. Retractable ball-point pens; pro- , pelling pencils. T & T MFG. CO. 31 Oct., 1966, No. 48784/66. Heading B6P. A carrier 26 for a ball-point pen cartridge or pencil 29 is externally threaded to engage the internal threads of a bushing 25 fitted into the end of a first tubular section 12. An extension 30 of the carrier 26 has a hexagonal section which mates with a part 36 of a second tubular section 15, also of hexagonal section, whereby relative rotation is prevented and axial sliding movement allowed between the carrier 26 and the second tubular section. Relative rotation between the first and second tubular sections 12 and 15 thereby propels or retracts the carrier 26 relative to the first tubular section 12. A front barrel portion 20 of the writing instrument frictionally surrounds the forward end of the first tubular section 12 and a cap portion 21 frictionally surrounds the second tubular section 15. A detent 37 is provided in the hexagonal part 36 so as to apply sufficient friction on the hexagonal extension 30 of the carrier to prevent writing pressure on the writing unit 29 from causing retraction of the unit and its carrier into the casing.
Patent GB-1492808-A (GB)
Title: Stress reduction in multi-layer structures
IPC: H01S5/20
Filed: 1974-11-12
Abstract: 1492808 Semiconductor devices; lasers WESTERN ELECTRIC CO Inc 12 Nov 1974 [12 Nov 1973 25 April 1974] 48843/74 Headings H1K and H1C Gallium arsenide layers and epitaxially grown aluminium gallium arsenide layers are substantially lattice-matched at the growth temperature, but on cooling to room temperature difference in thermal expansion coefficients lead to mismatch and consequential stress, particularly undesirable in the case of double heterojunction lasers. According to the invention, phosphorus added to the growth layer introduces slight mismatch at the growth temperature, but by selecting the correct proportion of phosphorus in relation to aluminium and gallium, a substantially stress-free structure is obtained at room temperature. It is shown that when the first layer is Al x Ga 1-x As, wherein x may be O, and the second layer Al y Ga 1-y As 1-z P z , the stress in the second layer at room temperature is less than 2 x 10<SP>8</SP> degrees/  cm.<SP>2</SP> when z/(y-x) lies between 0À03 and 0À05, and is substantially zero when it equals 0À04. The double heterostructure laser shown comprises a Si doped n-GaAs substrate 10, a Te doped n-Al y G 1-y As 1-z P layer 12, a Ge doped n- or p-GaAs layer 14, a Ge doped p-Al q Ga 1-q  As 1-p P p  layer 16 wherein for a symmetric wave guide y=q and z=p, and a Ge doped p-GaAs layer 18, optionally having a higher conductivity surface formed by diffusion of Zn. The phosphorus content of layers 12, 16 is selected to meet the requirements above, whereby junctions 13, 15 are substantially stress-free at the working temperature of the laser. Contacts 20, 22 are deposited and a resonator is formed by mirrors 24, 26, typically cleavage faces of the crystal. Heat sinks may be associated with the assembly. Current applied to contact 20 may be confined to zone 30 lying between high resistivity zones formed by proton bombardment to the depth of junction 13.
Patent GB-1208023-A (GB)
Title: Improvements in roof assemblies
IPC: E04D1/28
Filed: 1967-10-27
Abstract: 1,208,023. Roof covering. BRAAS & CO. G.m.b.H. 27 Oct., 1967 [27 Oct., 1966], No. 48905/67. Heading E1W. A composite roofing sheet 25 having an upper impervious layer, and progressing downwardly, an insulating layer and a layer serving as a damp excluder, has ventilating grooves 28 in the layer which is to abut the roof, the individual sheets being secured to the roof to extend from ridge to eaves without the use of adhesives, adjacent sheets being connected by means overlapping their edges, such as a ridge cap 39 or capping strip 42. The ridge cap 36 and capping strip 42 are designed to resiliently engage inverted T-section bars 26, 27 respectively, secured to the roof. The sheets have turned up edge portions 31, 35 adjacent the inverted stems of the T-bars. Pins may be passed through the portions 31 into the bars 26 to prevent the sheets from sliding towards the eaves. At the eaves a tongue 45 of the sheet enters a gutter 45.
Patent GB-1413131-A (GB)
Title: Money dispenser
IPC: G07D11/00
Filed: 1972-10-24
Abstract: 1413131 Money dispensers GLORY KOGYO KK 24 Oct 1972 [28 Oct 1971 8 Nov 1971] 48913/72 Headings G4X and G4H A money dispenser includes a register M for storing information representative of a sum to be dispensed, the digits of the sum stored in the register being read out one by one into a section S for determining the denominations of money necessary to make up thesum. The embodiments described are banknote dispensers operable to dispense a required sum in the minimum possible number of notes of 10,000; 5000; 1000 and 500 yen. In the embodiment shown the sum is stored dynamically in register M and the digits M0 to M5 are read out sequentially by the application of timing pulses T1. Outputs S1 to S4 from section S are introduced as command signals to a money dispensing section (not shown) and to respective display units D1 to D4 so that the denominations selected may be checked before dispensation is initiated. In a second embodiment (Fig. 2, not shown) the sum is storedin a static register (Ma) and the digits M0a to (M5a) are read out via gates (G0) to (G5) by the application of timing pulses (T0) to (T5). In a further embodiment (Figs. 3 to 8, not shown) the sum stored in register M is read out by the application of timing pulses (t 1 ) to (t4) into a four-bit read out register (XC) the outputs of the stages of the read out register being analysed by sections (D), (E) and (F) for determining the denominations required.
Patent GB-1399535-A (GB)
Title: Electrical connecting device
IPC: H01R25/14
Filed: 1972-10-24
Abstract: 1399535 Electric connectors PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 24 Oct 1972 [27 Oct 1971] 48979/72 Heading H2E A connector for electrically and mechanically interconnecting the ends of two or more support rails 10 carrying conductors 12, 22 comprises an insulating housing 1 with a plurality of mutually insulated metal plates 26, 27 connected to lead-through conductors 15 projecting beyond the housing and engaging the conductors, the lead-through conductors being embedded in a coupling member 6 of insulating material detachably secured to the housing. The housing 1 is formed as a rectangular box with a recess 4 in each sidewall, a central boss 5 in the bottom wall 2 and a cover 3. Each coupling member 6 has one lead-through conductor 15 for each conductor in a rail pivotally mounted for rotation about a respective aperture 35 in a widened end portion 7 of the member and urged outwardly by a spring (16). A rebate 8 enables the end portion 7 to be engaged in a recess 4 while the other end of the coupling member 6 is inserted into the end of a rail 10, a metal plate 18 screwed to the member 6 being clamped within slots 19 of the rail, a projecting portion 17 of each lead-through conductor 15 bearing against a respective conductor 12 or 22 against the resilience of the springs (16) and the end 21 of an earth strip (20) engaging an earth strip 20 in the rail. Each plate 26, 27 has four pin contacts which enter a respective hole 35 to engage a lead-through conductor and effect interconnection of like poled conductors 12, 22 in the tracks. The plates 26, 27 are separated by an insulating plate 28 and a further insulating plate 31 lies between the housing and the plate 26, all being contained within the cover and held by a screw 41 engaged by a sleeve 42 in the housing wall 2. A recess 4 not receiving a rail is closed by a cover 43. A metal earth plate 39 has holes 40 which engage pins (37) projecting from the earth strips 20.
Patent GB-1269609-A (GB)
Title: Multiple electrode assembly for electrical discharge machining
Inventor: DIETZ CLIFFORD H
IPC: B23H7/26
Filed: 1970-10-16
Abstract: 1,269,609. Electro-erosion. ENGINEERED MODELS CORP. 16 Oct., 1970, No. 49245/70. Heading B3V. An electro-erosion multiple electrode assembly comprises two spaced parallel plates 51, 52 having registering apertures 51a, 52a through which extend tubes 56 accommodating electrodes 61. The tubes 56 are secured to the plates 51, 52 by layers of epoxy resin 57. The assembly is mounted by screws 53 in a slot 44 of a plate 42 which is connected to the vertically movable ram of the erosion apparatus. When the electrodes 61 have pierced through the workpiece to form a series of closely spaced apertures, a switch is engaged and actuated by the electrodes to cause the ram to be raised.
Patent GB-1203966-A (GB)
Title: Balancing of gravitational forces in a vertically disposed valve spool
IPC: F15B13/00
Filed: 1967-10-31
Abstract: 1,203,966. Fluid pressure servomotor systems. CATERPILLAR TRACTOR. Oct.31, 1967 [Dec.15, 1966], No.49396/67. Heading G3P. [Also in Division F2] An arrangement for maintaining a trailer unit at a constant height with respect to a tractor unit regardless of the load on the trailer, is partly constitiuted by a vertical orientated valve 10 and a resilient actuator 11, the valve, which is carried by one of the units, having a pressure supply line 14 and two motor lines 15, 16, which motor lines are connected to the remainder of the arrangement, and the actuator having a coupling rod 27 which is attached to the other of the units. The valve is formed as a spool 13 having slots 15a and 16a and is provided with a spring arrangement 34, 35, 36 which serves to urge the spool upwardly with just sufficient force to equal twice the net gravitational force tending to move the spool downwardly and hence facilitates centering of the spool. A coupling lever 12 connects the spool to an actuator sleeve 29 which is responsive to movements of the rod 27 by virtue of a spring 30 interposed between the sleeve and rod, movements of the rod being thus transformed into corresponding movemnets of the spool and hence appropriate adjustments of one unit relative to the other. In order to eliminate small fluctuations of the spool to either side of the central position shown, which would result from small and of short duration fluctuations of the rod 27, there is formed at each end of the spool a chamber to which fluid from line 14 is supplied via a check valve 25, a restriction 18 and further check valves 21 and 22 serving to eliminate such fluctuations by hindering the transfer of fluid from one to the other chamber, but permitting such transfer of fluid if the spool moves one of its extreme positions, in which one of the further check valves is opened to its corresponding chamber, to the central, inactive position. In a modification Fig. 2 (not shown), the spool uppermost end is provided with two springs one of which biases the spool to its neutral position and the other serves to counteract downwardly acting gravitational forces, actuation of the spool being effected by means other than the resilient actuator.
Patent GB-1134201-A (GB)
Title: Improvements in and relating to door closers
Inventor: EYRE IVAN DAVID
IPC: E05F3/12
Filed: 1964-12-05
Abstract: 1,134,201. Door-operating appliances; checks. ARMSTRONG PATENTS CO. Ltd. 2 Dec., 1965 [5 Dec., 1964], No. 49571/64. Heading E2M. A door closer and means, wherein the door is checked until nearly closed 'and is then free to ensure closure by a slight slamming, for mounting in the top of a door, is actuated by a rotatable arm 44 linked to the door frame and comprises a double-headed piston 16 in a hydraulic cylinder 12. When the door is opened the piston 16 moves against the action of a spring assembly 18 and displaces fluid from the spring chamber 14, acting as a reservoir, through a non-return valve 32, 34, in an axial bore 20 of the piston 16 to a working space. On closure of the door the spring assembly reverses the direction of the piston and the working fluid returns to the reservoir by way of a restriction valve 62 and associated flow tubes 52, 50, 55, 58, 21. Towards the end of the door closure movement the piston opens a branch passage 74 thus connecting the flow tube 50 with the annular space 60 between the heads 24, 26, of the piston which in turn communicates via passageway 21 with the reservoir to bypass the restriction valve 62 and provide the snap-shut action. The restrictor 62 is a barrel or sleeve having angularly spaced radial holes 64, 66, 68 of different diameters to permit pre-selection of the damping rate by rotation of the barrel.
Patent GB-1111803-A (GB)
Title: Improvements in or relating to ceilings
IPC: E04B9/36
Filed: 1965-11-24
Abstract: 1,111,803. Suspended ceilings. O. LINDSTROM. 24 Nov., 1965 [1 Dec., 1964], No. 49922/65. Heading E1W. Metal strips 1 are supported from parallel inverted L-sectioned beams 2, (Fig. 1, not shown) in side-by-side abutting relationship, with the curved longitudinal flange portion 5 on one strip engaging the curved longitudinal flange portion 6 of an adjacent strip, both portions being seated in curved recesses 7 in aligned cut-out portions of adjacent beams 2, and being located along the lengths of the beams 2 by edge portions 8 of the flanges 4 seated in slots 9 in the recesses 7.
Patent GB-1109182-A (GB)
Title: A frame for supporting shuttering for casting floors
Inventor: MCGOWAN JOSEPH LOWRY
IPC: E04G11/48
Filed: 1965-04-12
Abstract: 1,109,182. Shuttering for floors. HOLST & CO. Ltd. 12 April, 1965, No. 50520/67. Divided out of 1,109,181. Heading E1S. The subject matter of this Specification is disclosed in Specification 1,109,181 but the claims are concerned with a frame for lifting the floor shuttering into position.
Patent GB-984629-A (GB)
Title: Adjustable backing key
IPC: B21D37/04
Filed: 1963-12-23
Abstract: 984,629. Positioning punches and dies. L. S. WARNER. Dec. 23, 1963, No. 50721/63. Heading B3W. A device for adjusting the position of a punch or die on a bolster 11 which has a counterbored tapped hole therein comprises an assembly of a backing collar 34, an adjustable key 22, a retaining screw 30 and a retaining ring 43, the backing collar being polygonal with a non- central hole 35 and four flat vertical sides one of which engages the tool 12, the key comprising a cylindrical journal 23 which is rotatable in the counterbore 32 in the bolster, an intermediate cylindrical cam portion 24 which is rotatable in the hole 35 and which is eccentric to the journal 23 and a nut portion 25 and having a central hole 26 which is counterbored at 27 to receive the head 29 of the retaining screw 30, the nut portion having a groove 42 to receive the retaining ring 43. The device is adjusted by rotating the key 22 to produce the desired lateral movement of the collar 34 and is then locked by the bolt 30. The nut portion 25 has a threaded bore 28 which receives a further screw 44 to lock the retaining screw.