baber/WOPTO huggingface dataset:
Patent GB-644172-A (GB)
Title: Improvements in or relating to fire or heat detecting devices
Inventor: FARMER ROBERT BLACK
IPC: G01K5/46
Filed: 1948-03-25
Abstract: 644,172. Thermal switches. MINISTER OF SUPPLY. March 25, 1948, No. 8844. Addition to 600,486. [Class 38(v)] A fire - detecting device according to the parent Specification has its detector tube 113 connected to the central cavity 122 of a part 111, to which are also connected a contactcarrying bourdon tube 112 and, by way of a hole 117, a bellows 115 joined at one end to the part 111 and at the other to a hollow piston 116. The piston is a loose fit in a cylinder formed in the part 111and has a jet 114 slidable in the central cavity 122 and formed with a bleed orifice 123, the pistonextending slidably through a shell 118 which, together with a cover 110 and further bellows 120, forms a pressure-tight enclosure. Slight upward movement of the piston 116 may be permitted by stops 119 compressing a spring 121 or, alternatively, the stops may directly engage the shell 118 and prevent this movement. The detector tube 113, bourdon tube 112, and bellows 115, are filled with a liquid having the desired temperature of vaporization, the hollow piston 116 mainly containing air. On a gradual low temperature rise the bourdon tube does not flex, but the liquid expands through the bleed orifice 123 into the piston 116 compressing the air therein, the bellows 115 also possibly expanding slightly, and unwanted actuation of the device is thereby avoided. On a sudden high temperature rise, the pressure cannot be relieved through the jet orifice 123 and accordingly the bourdon tube closes a circuit. The device may be tested by suddenly pressing the bellows 120 which causes the piston 116 to move in its cylinder and generate a sharp pressure rise in the bourdon tube. Further, the bellows 120 may be biassed to control the initial pressure in the device and therefore the vaporization of the liquid. In an alternative construction the bellows 115 and: piston 116 are replaced by a further bourdon tube connected to the other tube 112 by a restricted passage.
Patent GB-113058-A (GB)
Title: An Improved Window Lock.
Inventor: KAY JOSEPH
IPC: E05C5/02
Filed: 1917-06-21
Abstract: 113,058. Kay, J. June 21, 1917. Fastenings for sliding windows; sliding bolts. -Relates to a window fastener of the type in which a sliding bolt having a lug projecting from its end engages with a series of holes in a plate or bracket on the opposite sash. According to the invention, lugs 2C, 2D extend from the front of the bolt casing 2 and embrace the bracket 8. The base of the bracket may have a flange 8C, as shown in Fig. 6, so that it can be more firmly secured. The sashes are drawn together by the action of the stem 6A of the knob 6 on the incline 4A when the knob is turned down.
Patent GB-1467175-A (GB)
Title: Electrostatic developing
IPC: G03G15/09
Filed: 1974-02-27
Abstract: 1467175 Magnetic brush developing apparatus ADDRESSOGRAPH MULTIGRAPH CORP 27 Feb 1974 [2 March 1973] 9009/74 Heading G2H Brushes are formed on the surfaces of a series of hollow non-magnetic rollers 14, each rotated in the same direction, and each containing magnets 16 with their polarities directed as shown in Fig. 3. Magnetic developer material is carried around the series of rollers as a continuous blanket, the particles thereof forming upstanding tufts when directly over the magnets and flattening as shown in the gaps between adjacent rollers, the four magnetic brushes thus formed applying developer to an electrostatic image carried on the surface of a rotating drum 10. Additional developer material is cascaded on to the back run of the said blanket by a conventional bucket system, Fig. 1, and surplus material is removed from the blanket by a doctor blade 30. A hopper 32 supplies fresh toner material as required.
Patent GB-268815-A (GB)
Title: Improved process for the manufacture of cathodes for discharge devices
IPC: H01J9/04
Filed: 1927-04-01
Abstract: 268,815. Allgemeine Elektricitõts- Ges. April 1, 1926, [Convention date]. Vacuum tubes.-Non-conducting oxide bases for cathodes, particularly indirectly-heated cathodes, of discharge devices such as thermionic valves are coated with metal by applying a paste of finely divided metal and a viscous non-aqueous fluid not reacting with the oxide at normal temperature and by heating to the sintering temperature of the metal. The liquid may be paraffin, or, in applying, for example, a molybdenum coating to a tantalum oxide base, may be a solution, such as of sugar in ethylene glycol, yielding carbon on heating, the carbon reacting with the oxide and the metal to produce electrically conducting carbide and a good combination of the metal coating with the base. When oxidizable metal such as nickel or iron is used, the heating is done in an atmosphere of hydrogen or other inert gas. A metal coating thus produced on a tube of non-conducting oxide may be given a further coating of electron emitting material. The Specification as open to inspection under Sect. 91 (3) (a) comprises also the heating to the liquefaction temperature of the metal and coating tantalum-oxide filaments. This subject-matter does not appear in the Specification as accepted.
Patent GB-1154772-A (GB)
Title: Improvements in or relating to Devices for Loading and Unloading Ring-Shaped Piles
IPC: B65G65/00
Filed: 1967-02-24
Abstract: 1,154,772. Piling and reclaiming apparatus. MASCHINENFABRIK BUCKAU R. WOLF A.G. 24 Feb., 1967 [25 Feb., 1966], No. 9082/67. Heading B8E. Apparatus for simultaneous piling and reclaiming from a ring-shaped pile comprises a central tower having rotatable sections 5, 6 mounted on ball mounted turntables 9-11. A piling delivery conveyer 8 receives material from a fixed feeder conveyer 13 and is displaceably and pivotally mounted on a bridge 7 rotatable by a motor 33 with the tower section 6 to form a layered pile. A rotating bucket tube reclaimer having an internal conveyer 15 which feeds through a weighing control machine 29 to the interior of the tower section 5 and thus to a discharge conveyer 19 is supported on circular tracks 25 by bogies 24 which are driven to rotate the reclaimer with the tower section 5. The piling and reclaiming devices can operate at the same time at different parts of the site. In an alternative arrangement the bridge 7 can also be supported on driven bogies running on circular tracks.
Patent GB-186084-A (GB)
Title: Improved process of and apparatus for deriving motive power from steam
IPC: F01K21/04
Filed: 1921-03-24
Abstract: 186,084. Tesla, N.. March 24, 1921. Working-fluid supply.-Steam is directed on to a turbine rotor by annular non-convergent nozzles 6 which operate as ejector nozzles and draw heated gases from the chambers 16 through nozzles 7. The gases may be products of combustion obtained by burning in a chamber 12, fuel and air entering through valves 24 and 23 respectively. The products of combustion pass to the chambers 16 by way of superheater coils 11 in a chamber 8 through which the steam passes. The turbine may be of the type described in Specification 24001/10.
Patent GB-1171075-A (GB)
Title: Improvements in or relating to Telecommunications Exchange Systems.
IPC: H04Q3/00
Filed: 1968-02-26
Abstract: 1,171,075. Automatic exchange systems. SIEMENS A.G. 26 Feb., 1968 [27 Feb., 1967], No. 9108/68. Heading H4K. A cross-point switching network which comprises two stages A, B and a number of sections KG1, KG2 ... KGq, Fig. 1, is controlled by a simulating relay network, Fig. 2 (the relays being shown only for switches KA11, KB11), wherein the horizontals in each section of stage A are connected in multiple to marking wires mq, the verticals in each section of stage B are connected in multiple to marking wires qr, and the corresponding links between the verticals of A and horizontals of B in the several sections are connected in multiple to marking wires np. The marking wires are controlled by relay matrices SF1, SF2, SF3.
Patent GB-882917-A (GB)
Title: Improvements relating to electric snap-action switches
Inventor: GOSSLING CLEMENT ELPHICK
IPC: H01H3/00
Filed: 1959-03-17
Abstract: 882,917. Snap-action switches; make-andbreak switches, mechanical. AUSTINLITE Ltd. Feb. 22, 1960 [March 17, 1959], No. 9181/59. Class 38 (5). An electric snap-action switch comprises a worm which upon rotation first moves axially to abut a stop and then rotates a worm-wheel to stress a resilient reaction means which thereafter with a snap action further rotates the worm-wheel and drives the worm axially away from the stop. A worm-wheel 17 is held in a top dead-centre position by a spring 20 and piston 25 acting through a connecting-rod 28 and crank-pin 26. A continuously rotating electric motor 12 drives, through gearing 13, a splined shaft 2 on which is slidably mounted a worm 1. The worm 1 first slides to the right until it abuts against a stop, when it rotates the worm-wheel 17 through 180 degrees to compress the spring 20. As the motor-driven rotation continues, the mechanism passes the lower dead-centre position and the spring 20 thereupon drives the worm-wheel 17 rapidly through a further 180 degrees, driving the worm 1 back along its shaft 2 until it reaches a spring- loaded buffer at the left-hand end of a surrounding tube 5, when the cycle recommences. A contact drum driven by the worm-wheel 17 thus has an idle period followed by 180 degrees steady rotation and then a rapid snap-action rotation for a further 180 degrees. The switch is described as supplying current to aircraft de-icing mats. Should seizing of the fixed and moving contacts occur, e.g. due to a heavy short-circuit current, and the spring 20 be unable to rotate the mechanism, the rotation will be continued by the worm-drive to force the contacts free. The stop against which the worm 1 abuts may be spring-loaded, adjustment of this spring pressure varying the idle time of the switch.
Patent GB-1483886-A (GB)
Title: Electric switch
IPC: H01H13/50
Filed: 1976-03-08
Abstract: 1483886 Mechanical switches E MARQUARDT J MARQUARDT H MARQUARDT and E MARQUARDT [trading as J & J MARQUARDT] 8 March 1976 [13 March 1975] 09187/76 Heading H1N In an electric switch having a sudden reduction in actuating force to provide feel, a corrugated leaf spring 6, Fig. 1, engaged by the actuator 17 is strained between a pair of end pivots 18, 20 and has a contact arm 8 connected at one end through an arcuate bearing portion 9, Fig. 4. The spring 6 has a pair of upwardly projecting convex regions 13, 14 at opposite ends, an intermediate downwardly projecting convex portion 15 and a flat portion 16 engaged by the actuator 7. The contact arm 8 may be bifurcated and has points 10 which may be of gold.
Patent GB-1042933-A (GB)
Title: Methods of growing crystals of gallium arsenide, gallium phosphide or mixtures thereof
IPC: C01G15/00
Filed: 1963-03-08
Abstract: A crystal of gallium phosphide or gallium arsenide or a mixture thereof is grown on a crystalline semi-conductor substrate by a process comprising passing over the substrate a gas stream consisting of hydrogen containing from 10-4 to 1 atmosphere of water vapour, Ga2O and P or As or both, optionally an impurity vapour and optionally an inert diluent gas, the gas stream temperature being at least 700 DEG  C., and the substrate being maintained at a temperature below the lowest saturation temperature of the vapour constituents of the gas stream. Examples relate to forming the initial gas mixture by passing H2/H2O over S and over GaP; by passing H2/H2O over GaAs; by passing H2/H2O over GaP; by passing CO2/H2 over GaP; by passing H2 over P2O5 and over Ga; by passing H2 over ZnO and over GaP; by passing H2/H2O over GaAs and then over GaP.  Other source materials referred to are gallium oxide; arsenic oxide, elemental arsenic or phosphorus, metal arsenides or phosphides. Substrate materials are GaP, GaAs, Mg-doped GaP.
Patent GB-1500848-A (GB)
Title: Forced draught gas fuelled heater installation
IPC: G05D23/20
Filed: 1976-03-08
Abstract: 1500848 Temperature control SAUNIER DUVAL 8 March 1976 [18 March 1975] 9226/76 Heading G3R A forced-draught gas-fuelled heater is controlled so as to maintain a required heat output by circuitry 9 which adjusts the voltage fed to one of two coils of a motor 15 driving the forced-draught fan 5. As shown, the fan is an extractor fan and the two coils of the motor comprise a main coil fed with variable low-voltage via lines 18, 18' plus a phase delay coil fed with mains voltage via lines 16, 16'. The supply via lines 18, 18' is varied in response to the water temperature sensed at 14 in a pipeline 11. The control circuitry 9 may operate either in analogue or in "digital" fashion to provide, in the former case, a control signal whose magnitude is proportional to the temperature error and in the latter case a pulse train whose mark-to-space ratio is proportional to the temperature error. The gas supply to the burner, via a valve 8, may be varied to correspond with the fan speed. Specification 1481589 (see Division F4) is referred to.
Patent GB-328402-A (GB)
Title: Improvements in or relating to the joints of pipes for roadways
IPC: F16L27/113
Filed: 1929-03-22
Abstract: 328,402. Dunlop Rubber Co., Ltd., Paull, W. H., and Bond, W. de la R. March 22, 1929. Joints with yielding outer part compressed. - A pipe joint for road mains comprises a flexible sleeve 5 which is secured by clamps 6, 7 to the spaced pipe ends 1, 2, and a rigid member 10, wholly or rubberized fabric with or sleeve. The sleeve may be of rubber, rubber composition or rubberized fabric with or without metallic wire reinforcement, and is preferably moulded to conform to the shape of the pipa ends. The shield 10 may be a metal tube in one or more parts secured by bolts 12, or it may be of brick or concrete, and may comprise half a tube with its ends bearing on the pipe ends.
Patent GB-651293-A (GB)
Title: Improvements in magnetic transducing apparatus
IPC: G11B15/67
Filed: 1948-04-02
Abstract: 651,293. Spools. BRUSH DEVELOPMENT CO. April 2, 1948, No. 9334. Convention date, April 15, 1947. [Class 120(iii)] [Alsoin Groups XVI, XX and XXXVIII] In a magnetic recording and reproducing apparatus having a medium in the form of a tape or filament, the sides of the spools are provided with at least one radial slot 45, Fig. 1, which leads into a recess 30 in the side of the hub, whereby the end 31-1 of the medium 31 may be passed between the sides of the spool and out through the said slot, and grasped by the fingers and drawn down to the recess 30 into which it is folded back in order to anchor it. Flares 48 may be provided in the edges of the spools near the outer ends of the slots 45 in order to facilitate threading of the tape 31 through the slots 45. Indicator marks 44 may be provided at intervals along the slots 45 to indicate the amount of tape on the spools. The tape 31 is drawn at a constant speed over a guide pulley 26, an erazing head 27 and transducer 29 by means of a shaft 32 against which the tape is pressed by means of a roller 84. A support member 93 having a groove 95 is provided to support the shaft 32, and may be of a self-lubricating material such as graphite or briquetted powdered bronze and graphite impregnated with an oily lubricant. To avoid contamination of the tape, the support member 93 may be cut away at part where the tape comes into contact with the shaft 32. A flywheel 91 is fitted to the shaft 32 for thepurpose of maintaining uniform speed. In another construction, Fig. 2, a shaft 52 is fitted with a flange 62 which supports a spool to which it is coupled by a pin 56. The flange 62 carries a sensing lever 67 which presses into the slot 45 against the turns of the tape 31. When the spool becomes nearly empty the lever 67 enters the spool and its outer end 66 is intercepted by one of the projections 73 on a disc 70 which is thus rotated so that one of the projections 75 trips the switch lever 77 to interrupt or reverse the driving motor.
Patent GB-1005370-A (GB)
Title: A stacking apparatus for rolled materials, in particular for metal ingots
IPC: B65G57/18
Filed: 1962-03-12
Abstract: 1,005,370. Stacking-machines. SIEMAG SIEGENER MASCHINENBAU G.m.b.H. March 12, 1962 [March 21, 1961], No. 9344/62. Heading B8C. [Also in Division B3] A machine for stacking ingots comprises support fingers for rising beneath a group of ingots and lifting them from supporting bars, the fingers being mounted on a reciprocating carriage which advances them to above the stacking position, permits them to tilt downwards and then withdraws them past means for stripping the ingots onto the stack. The ingots K are advanced along bars, Fig. 8, by dogs 6 mounted to feed forward above the bars and withdraw beneath them on the non- feeding stroke (Fig. 7, not shown). The fingers 17 are mounted on carriages 16 reciprocated through links 19, 20 with lost motion limited by stops 23, 24. In the withdrawn position, the fingers are lowered, but as the links 19, 20 pivot clockwise as shown, to advance the carriages, members 26 on the links 19 pivot the fingers upwards to raise the ingots above clear of the bars. When the carriages are fully advanced, the links 19, 20 pivot anticlockwise prior to withdrawal and the fingers 17 descend so that strippers 28 will remove the ingots as the fingers retract.
Patent GB-445644-A (GB)
Title: Electrostatic charging apparatus
IPC: B05B5/03
Filed: 1935-03-26
Abstract: 445,644. Atomizing liquids and disseminating powders. BARTHEL, J., 50, Stammheimerstrasse, Riehl, and HUEBNER, H., 34, Paffratherstrasse, Dellbruck, both in Cologne, Germany. March 26, 1935, No. 9415. [Class 69 (iii)] Liquid or finely divided solid material is atomized by a fluid under pressure supplied through the interior of an electrically charged apertured ball-shaped hollow body, the pressure fluid engaging the substance to be atomized on its emergence from the apertures. In the form shown in Fig. 1, fluid to be sprayed is passed through a duct i into the upper part of a charged sphere a and emerges through a ring of apertures h directly above a second ring of fine apertures e from which emerges gas under pressure supplied to the lower part of the sphere through the pipe d. In the form shown in Fig. 4, the charged spiral S is equivalent to a rounded body and the spaces f between the turns serve as apertures for the outlet of fluid under pressure which there engages the substance to be atomized, the said substance trickling over the helix. In a modification, the substance trickles over a charged perforated sphere, the arrangement being generally similar to that in Fig. 4.
Patent GB-1027321-A (GB)
Title: Improvements in or relating to anti-condensation or anti-mist panels for attachment to screens or windows
Inventor: ZELL SALOMON
IPC: E06B3/28
Filed: 1964-03-06
Abstract: 1,027,321. Double glazing. ZELL-EM Ltd. Oct. 9, 1964 [March 6, 1964], No. 9488/64. Heading E1R. An anti-condensation or-mist panel for attachment to a car screen or window comprises a pane 10 of flat stiff but flexible transparent cellulose accetate or P.V.C. coloured if desired and an annular strip 11 of flexible P.V.C. secured to the peripheral portion of the pane 10 as by adhesive or H.F. welding, the portion of the strip 11 projecting beyond the pane being highly polished to render it self adhesive to the screen or window, and a P.V.C. or metal, natural rubber or acrylic resin spacing member 12 secured to the strip 11 as by adhesive or welding, or between the strip 11 and pane 10 and located close to the peripheral of the pane. Disc shaped bosses are secured to the centre of the pane especially on large panes to prevent sagging of the pane 10 and prevent it touching the screen or window. The spacing member- 12 may be a folded strip to provide a channel section member which embraces the inner edge of the framing strip 11.
Patent GB-218028-A (GB)
Title: Improvements in or relating to engine-pistons
IPC: F16J9/00
Filed: 1923-04-07
Abstract: 218,028. Ward, A. H. M. J. April 7, 1923. Pistons; reducing and equalizing wear of. -In an aluminium or other piston for an internal - combustion or other engine having a hard - metal ring E which takes the wear, the ring E bottoms its groove only on the faces of the piston which take the connecting-rod thrust, the groove being increased in depth adjacent the gudgeon-pin bosses. Rotation of the ring is prevented by a pin F. Thebearing faces of the skirt may have vertical slits B and the skirt may be expanded by an internal spring ring. In a piston without a skirt, the ring E is placed in the plane of the gudgeon-pin, the ends of which are notched to receive the ring.
Patent GB-1382829-A (GB)
Title: Manufacture of materials which are rendered electrically conductive  by deformation
IPC: H01B1/22
Filed: 1971-04-16
Abstract: 1382829 Conductive material JOSEPH LUCAS (INDUSTRIES) Ltd 6 April 1972 [16 April 1971] 9622/71 Heading B5A A method of producing a material which is rendered electrically conductive by deformation comprises introducing a mixture of conductive particles, i.e. silver-plated copper and binder, i.e. silicone rubber, into a mould, removing the material after the binder has cured and detaching and discarding an upper portion of the material to avoid inhomogeneity in the distribution of the particles in the final material due to sinking during curing. The portion may be 2-3% of the height of the cured material. The mould may comprise a pair of vertical glass plates held spaced apart by spacers, clips or clamps. The particles may comprise 80-84% by weight of the mixture and may have diameters within the range 0À063 to 1À50 mm.
Patent GB-1175891-A (GB)
Title: Improvements in or relating to Valves
Inventor: DUYMELINCK JACOBUS HENRICUS
IPC: B60C29/04
Filed: 1967-03-01
Abstract: 1,175,891. Moulding tyre valves. J. H. DUYMELINCK, and R. SCHOOTSTRA. 1 March, 1967, No. 9733/67. Heading B5A. [Also in Division F2] A valve (see Division F2) has a moulded synthetic plastics body 1, e.g. of nylon, and a patch 19 for joining the valve to an air tube is subsequently moulded to it, or inserted in the mould prior to forming the body. A strip of patches 19 can be passed stepwise through a mould, and separated before moulding the valve body.
Patent GB-493368-A (GB)
Title: Improvements in or relating to alternating current amplifiers
IPC: H03F3/22
Filed: 1937-04-06
Abstract: 493,368. Valve circuits. MARCONI'S WIRELESS TELEGRAPH CO., Ltd., and CLOUGH, N. H. April 6, 1937, No. 9771. [Class 40 (v)] The magnifier stage of a transmitting amplifier becomes conductive when flow in a normally-energized inductive circuit suddenly ceases or is reduced, the frequency of the flow variations being controlled by an oscillation generator. The oscillation generator 1, 2 feeds a pair of valves 14, 15 which pass on the positive and negative peaks of the oscillator as negative flicks of twice the oscillator frequency to the grid of valve 26. This valve is normally conductive and its plate circuit includes inductance 30. The negative flicks cut off valve 26 so that the flow in the inductive anode circuit is interrupted at twice the oscillator frequency. The anode 29 is directly connected to grid 31 of magnifier valve 32 which has its own tuned flywheel circuit 35, tuned to twice the oscillator frequency and the interruption of flow through valve 26 causes steep sided positive pulses to be applied to the grid 31 so that an approximately sinusoidal waveform of twice the oscillator frequency appears across tuned circuit 35. The valves 14, 15 may be replaced by a single phase reversing valve, the output then being at the same frequency as the oscillation generator. Modulation is effected by operating telegraph key or relay 36 or, for telephone transmission, by connecting the grid resistance 24 to the cathode 25 through a source 37 of modulation potential and a negative grid bias source 37. Alternatively the valve 32 may be a pentode, modulation potentials being applied to the suppressor grid or the phase reversing valve may be a pentode, keying being effected by a key or relay between the screening grid and earth.