baber/WOPTO huggingface dataset:
Patent GB-977827-A (GB)
Title: Improvements in or relating to electron multipliers
Inventor: PICARD ETIENNE
IPC: G01T1/208
Filed: 1961-02-09
Abstract: 977,827. Photo-multiplier circuits. COMMISSARIAT A L'ENERGIE ATOMIQUE. Feb. 9, 1961 [Feb. 9, 1960], No. 4920/61. Heading G1A. [Also in Division H3] The gain of an electron multiplier tube is controlled by switching circuits which, when the output current exceeds a certain value, operate to strap a number of the dynodes and the anode to a point of reduced potential. As shown in Fig. 1, a first rise in output current results in relays B14 S1 operating to connect dynodes D10, D11 and anode A to point 10 on the potential divider network r 0 .... r 11 . Further increases in output current result in other relay circuits operating to strap more dynodes to the anode, and to connect these strapped electrodes to lower potential points on the potential divider chain r o .... r 11 . A modified circuit, Fig. 2 (not shown) includes a differential relay which makes one pair of contacts when the current through it exceeds 100 microamps and another pair when the current through it is less than 10 microamps.
Patent GB-651278-A (GB)
Title: Improvements in or relating to building wall units
IPC: E04C2/06
Filed: 1949-04-01
Abstract: 651,278. Building units; walls. STUART, D. G., and GREENGROVE, G. F. April 1, 1949, No. 5004/48. [Classes 20(iv) and 87(i)] A hollow reinforced concrete building slab of storey height comprises a continuous face 4 provided with marginal and intermediate ribs 1 forming recesses which are closed by panels 3 having inclined edges 3a. Vertical reinforcing rods 1 or dowels project from the upper and lower faces to engage with a roof or floor. Hooks 2a on horizontal reinforcements project at the side edges into grooves which receive bonding material X, Fig. 8, the hooks being engaged by vertical rods 10. At corners and wall junctions, the edge of the slab is formed as in Fig. 2, and the corner completed by a separate corner piece 12 held in place by a wire strainer 13, and the wall junction by the end of the branch wall. Roofing felt 11 is provided at the junctions between slabs.
Patent GB-736529-A (GB)
Title: Actuating means for a variable-speed power transmission mechanism
IPC: F16H63/14
Filed: 1953-02-24
Abstract: 736,529. Change-speed gearing. BURMAN & SONS, Ltd., and BRIGGS, W. H. Feb. 23, 1954 [Feb. 24, 1953], No. 5115/53. Class 80 (2). Control means for a motor-cycle change-speed gear comprises a plate a which is rotated in steps, so as to slide gear selector rods c, d by cam slots g, h, by successive oscillations of a double-armed pawl q co-acting with teeth k on the periphery of the plate a, the pawl q being mounted, through a flat-sided member r, for rotation with a foot- or hand-operated spindle p, disposed at right-angles to the axis of the plate a, while being free to tilt sideways against the action of a spring s in riding over the teeth k when being returned to central position by a U-spring v. The plate a is held against accidental movement by a spring-loaded detent n.
Patent GB-1534965-A (GB)
Title: Forage harvesters
IPC: A01F29/14
Filed: 1977-05-06
Abstract: 1534965 Forage harvesters WESTERN MACHINERY & EQUIPMENT CO Ltd 6 May 1977 [10 Feb 1976] 05119/76 Heading A1F Crop cut by cutters 12 is fed by screw conveyer 5 radially to a cylindrical chopper 3 whose axis of rotation 1 is substantially in line with a tractor power-take-off drive so that it can be driven directly.
Patent GB-572033-A (GB)
Title: Improvements in or relating to self-sealing fuel tanks
IPC: B64D37/06
Filed: 1944-03-20
Abstract: 572,033. Tanks. HAWKER AIRCRAFT, Ltd., and COXWELL, R. F. H. D. March 20, 1944, No. 5168. [Class 69 (i)] A device for clamping the margins of rubber coverings 14, Figs. 1 and 3, surrounding tank apertures 24, comprises a clamping ring 10 extending over the margin of the covering 14 around an aperture 24 therein and having its inner edge 16 bevelled, a retaining ring 18 secured to the tank shell 22 and formed with an external overhanging lip 28 and a locking member or members 30 inserted between the clamping ring 10 and the retaining ring 18 when the clamping ring 10 is depressed by means of levers 32. In a modification, the retaining ring is a nut 38, Fig. 5, which engages the external thread of a filler-cap or like socket 40, thereby clamping the socket to the tank.
Patent GB-525279-A (GB)
Title: Improvements in and relating to valve bags
IPC: B65D30/24
Filed: 1939-02-16
Abstract: 525,279. Paper bags. BATES INTERNATIONAL BAG CO. Feb. 16, 1939, No. 5201. Convention date, March 4, 1938. [Class 94 (ii)] In a valve bag having a valve in one corner the sides of the valve are secured to the adjacent walls of the bag by adhesive which extends to and slightly below the places where the' bag walls bend to form the shoulders of the bag end when the bag is filled. In applying the invention to a valve bag 10 of the form described in Specification 252,038, [Class 94 (ii)], with a corner above a gusset 12 folded inwardly to form a valve 13, the sides of the valve are adhered to the inner surfaces of the bag walls at 14, so that when the bag is filled and expanded, as shown in Fig. 3, the side walls are spread apart and bent along lines 15. The adhesive between the valve sides and the bag walls extends to, and somewhat beyond, the shoulder lines 15, as far as the positions 16. When the bag is filled the walls are separated and bent outwardly as shown, thereby tearing away the adhesive from positions 16 back to the shoulder lines 15'and ensuring the lateral spreading of the valve, which is thus closed. Short slits 17 may be provided in the edge of the valve along the fold lines 15 to ensure the proper closing of the valve. The edge of the valve may also have a slit 18 at the bottom fold which occurs when the bag is empty.
Patent GB-310126-A (GB)
Title: Improvements in or relating to backing sheets for stencil sheets
IPC: B41N1/24
Filed: 1928-02-20
Abstract: 310,126. Horii, S. Feb. 20, 1928. Stencils.-Backing - sheets for duplicating- machine stencil sheets are coated with a composition comprising a non-drying oil, such as castor oil, with or without a hardening-material, such as beeswax, carnauba wax, montan wax, copal, or ester gum, and a solvent, such as turpentine, with the object of preventing the backing-sheet from sticking to the stencil sheet, and also to prevent the coating of the stencil sheet from drying. A suitable composition comprises castor oil, carnauba wax, copal, turpentine, benzol, and petroleum benzine in specified proportions. After coating, the sheets may be calendered between hot rollers. The stencil sheet is superimposed on the backing sheet, and may be attached at one end, and the combined sheet is passed through a typewriter or cut by means of a style in the usual way. A sheet of cloth or thin paper may be placed between the stencil and backing sheets.
Patent GB-972316-A (GB)
Title: Electronic switch
IPC: H03K17/97
Filed: 1962-02-12
Abstract: 972,316. Transistor switching circuits. COMPAGNIE ELECTRO-MECANIQUE. Feb. 12, 1962 [Feb. 10, 1961], No. 5328/62. Heading H3T. A switch for connecting a power supply 5 to a load 2 comprises a transistor blocking oscillator connected in parallel with the load, variation in the air gap of the transformer Tf producing starting and stopping of the oscillator so as to effectively cut the supply off from the load or connect it to the load respectively, the mark to space ratio of the oscillator output being large. As described, the transformer comprises a potshaped dust core moved by a push-button. In the oscillating condition of the circuit the pulses are absorbed by capacitor C 2  which produces an effective low impedance shunt across the load 2. The transformer may be provided with a large number of turns so that, on opening the air gap, oscillation does not cease immediately, but continues until the end of an oscillation period. A base bias circuit including a N.T.C. resistor may be provided for temperature stabilization, Fig. 2 (not shown).
Patent GB-1454356-A (GB)
Title: Electric circuit breakers
IPC: H01H71/12
Filed: 1974-02-06
Abstract: 1454356 Circuit breakers CUTLER-HAMMER EUROPA Ltd 6 Feb 1974 [6 Feb 1973] 05440/74 Heading H1N In a circuit breaker having an insulating housing 2, 4, a stationary contact 8, a movable contact 10 and an operating mechanism, the moving contact is mounted on a rocking shaft 22 journalled in bearings in two brackets 24 within the housing, each bearing having two parts to facilitate assembly, one part 100 being provided by the bracket, the other being provided by a removable retainer 98. Retainers 98 have lugs 101, 102, 103 that hold it engaged by friction with lug 104 of bracket 24 during assembly. A shoulder of the housing (106 Fig. 11, not shown) holds the retainer in place after bracket 24 is secured to housing 2. As described the circuit breaker is multipole with dual thermal and magnetic current sensing means 16 for each pole. Upon overload in one circuit, tripbar 18 extending across all poles is moved releasing all three latching systems. The movable contacts are carried by arms 12 of assemblies having frames 20 secured to common rocking shaft 22. The toggle system is arranged such that whenever the contacts are closed (e.g. welded together) the operating lever is biased to the "on" position (Fig. 5, not shown). Each latch system has a primary latch 48, which restrains lever 27 to fix in position upper pivot pin 32 of the toggle linkage and is retained itself by secondary latch 58 engaged on overcurrent by member 16.
Patent GB-720760-A (GB)
Title: Improvements in or relating to radio receiver circuits for at least two ultra high-frequency ranges
IPC: H04N5/44
Filed: 1953-02-27
Abstract: 720,760. Valve circuits for radio reception. PHILIPS ELECTRICAL INDUSTRIES, Ltd. Feb. 27, 1953 [March 3, 1952], No. 5537/53. Class 40 (5). In a superheterodyne receiver operating on two ultra-high frequency ranges, the valve used for frequency-changing on the lower frequency range is switched to operate as an intermediate-frequency amplifier on the higherfrequency range, a crystal or diode mixer being used on this range. In one embodiment, Fig. 2, on the lower-frequency range signals from aerial 5 are amplified in a grounded-grid stage 16 and pass via coupled circuits 3, 4 to a triode mixer 8. Local oscillations from the oscillator 1 are also applied to the grid of the valve 8, the LF. output being taken from an anode coil 9 tuned by circuit capacity. On the higher frequency range, i.e. switch 17 moved to the left, signals are picked up on an aerial 15 tuned by a Lecher system 14, and are applied directly to a crystal mixer 12. A harmonic of the local oscillator frequency is used for mixing, being applied to the crystal 12 via a filter 11. On this range, the valves 16, 8 comprise respectively a grounded cathode and grounded grid stage operating at intermediate frequency, being coupled together by inductance 18 which is tuned by circuit capacity. In another embodiment, Fig. I (not shown), a pentode R.F. amplifier is used on the lower frequency range and is inoperative on the higher range; on this range I.F. signals are fed directly from the crystal mixer to the cathode of the triode mixer of the lower frequency range, which operates on the higher range as a grounded grid I.F. amplifier.
Patent GB-583801-A (GB)
Title: Improvements in or relating to metallic vacuum jacketted vessels
IPC: B60K15/03
Filed: 1943-04-07
Abstract: 583,801. Tanks. EGERTON, A. C. G., and PEARCE, M. April 7, 1943, No. 5585. [Class 69 (i)] In a metallic vacuum jacketed vessel for holding liquid methane or like fuel &c., wherein each junction between the inner and outer vessels is provided at the ends of elongated metallic necks, the, or each, pair of necks 5, 6 is connected by a ring 7 and extends inwardly preferably to near the centre of gravity of the inner vessel, and is screened from contact with the liquid by inner and outer guard tubes 8, 9 connected by a ring 10 and supported from the neck 6 by circumferentially spaced supports 11. The guard tube 8 is open at both ends, its outer end being normally closed by a plug. Stays and an absorbent may be placed in the vacuum space as in Specification 579,840. The vessels 1, 2 may be of copper or steel or aluminium alloys; the materials known under the Registered Trade Marks " Monel " metal and " Everdur " may be used. The necks 5, 6 may be of austenitic steel or of the material known under the Registered Trade Mark " Inconel." The facing surfaces of the vessels, and especially the outer face of the vessel 1, should be made highly reflecting, as by electrolytically plating with copper, silver or chromium.
Patent GB-949796-A (GB)
Title: Plant for mixing two liquids of different specific weight
Filed: 1961-02-15
Abstract: <PICT:0949796/C1/1> In vertical column 1 has a plurality of horizontal plates 2 which are between 50 and 100 millimetres apart. Compartments 12 and 3 are used to discharge the contacted liquids introduced at inlets 15 and 16 respectively.  Rotary stirrers 14 contribute to the intimate mixing of the co-current flow through the compartments formed by the horizontal plates and under the influence of gravity settling takes place at the end of the compartment remote from the mixer.
Patent GB-781730-A (GB)
Title: Improvements in or relating to disinfectant composition
IPC: A01N59/10
Filed: 1955-02-25
Abstract: A dry, stable, non-interreacting disinfectant composition consists essentially of a dry mixture of an anhydrous chlorine-containing compound, preferably in the proportion of 10 to 99.5 parts by weight, that is stable in the dry state and provides hypochlorite ions in aqueous solution, and an anhydrous, water-soluble alkali metal bromide, e.g. sodium bromide, preferably in the proportion of 90 to 0.5 parts by weight, which does not become hydrated when mixed with the chlorine-containing compound and which provides hypobromite ions in aqueous solution in the presence of hypochlorite ions.  Specified chlorine containing compounds are calcium hypochlorite, p-toluenesulfonchloramide, chloromelamine, sodium benzenesulfonchloramine, chloramine T, chloramine B, and 1,3-dichloro-5,5-dimethylhydantoin.
Patent GB-762206-A (GB)
Title: Improvements in and relating to electrical circuits including polarised electromagnetic switches
Inventor: FLEMING GEORGE COWAN
IPC: H03K17/28
Filed: 1954-02-26
Abstract: 762,206. Electromagnetic relays. ENGLISH ELECTRIC CO., Ltd. Feb. 25, 1955 [Feb. 26, 1954], No. 5720/54. Class 38(5) A relay operating after a desired timedelay which remains constant irrespective of voltage variations comprises a polarized relay 1 having opposed windings 2, 3 energized from a D.C. source 6 through a switch 5, the relay contact 9 being biased by a light spring to the closed position. The winding 2 is in series with a capacitor 7 and a rheostat 8, and the winding 3 in series with a resistance 4, the circuit components having such values that when the switch 5 is closed the initial value of the transient current flowing through the winding 2 is greater than the steady current through winding 3, where by the contact 9 is opened. After a time-delay during which the current through winding 2 has decayed to a value equal to that in winding 3, the contact 9 recloses. The contact 9 controls a slow-to-operate relay 10 and thus this relay is not operated until reclosure of contact 9. Different time-delay ranges are obtained by changing the capacitor 7, and positions within the ranges are obtained by the rheostat 8. In modifications the capacitor may be replaced by an inductance, the resistance 4 replaced by a capacitor in a circuit having a different time constant from that of the capacitor 7, and the resistance 4 replaced by an inductance (Figs. 2-4 of the Complete Specification, not shown). In each of these three modifications as also in the first-described embodiment, the polarized relay 1 operates at the point where the current-time curves of the currents through the windings 2, 3 intersect. In a further modification, the windings 2, 3 axe in series, one winding being shunted by a capacitor. In an alternative arrangement adapted to function as a pulse generator, the contact 9 opens after a predetermined delay.
Patent GB-325118-A (GB)
Title: A roller massaging appliance
IPC: A61H15/00
Filed: 1929-02-21
Abstract: 325,118. Mayer, P. Feb. 21, 1929. Massage. - A roller massaging appliance is composed of thin, polygonal or toothed discs, rings, stars, or the like 1, made, e.g., of waste rubber, placed close together and having their corners or teeth offset with respect to one another. The handle 2 is of bent wire.
Patent GB-286297-A (GB)
Title: Appliance for roasting, baking, stewing, and like purposes
IPC: F24B1/00
Filed: 1928-02-23
Abstract: 286,297. Drehmann, H., March 3, 1927, [Convention date]. Ovens. - In an appliance for baking, roasting, and stewing, of the kind comprising a stand a supporting a cooking-vessel d and cover i, the gases from a heating device enter through spaced arcuate inlet slots a<1>, a<2>, a<3> in the stand, and leave by groups of openings i<1> - i<4> arranged in the lateral wall of the cover in staggered relation to the inlet slots. The vessel d is supported on an insulating plate b, and is provided with a wire grid and a cuplike device h, Fig. 3, which are inserted respectively for use in roasting and baking annular pies. An inspection hole k closed by transparent material is provided in the cover i.
Patent GB-582734-A (GB)
Title: Improvements relating to the hinged connections of the lids of sheet metal boxes
IPC: B65D43/16
Filed: 1944-03-29
Abstract: 582,734. Boxes. SYKES, J., and READS, Ltd. March 29, 1944, No. 5763. [Class 18] [Also in Group XXV] The lid of a sheet metal box is hinged to the body by cutting slits 3, 3, for some distance down from the edge of the rear wall of the body, so as partly to separate a comparatively wide part 4 in which is formed an inwardly open groove 5, bending the part 4 out of the plane of the rear wall, engaging thereover a slot 9 formed in the lid flange, and bending back the part 4 substantially into that plane. The groove 5 accommodates the part 8a of the lid beading a, and outwardly open grooves 10 accommodate that part of the beading which extends at each side beyond the part 4, towards its free end to facilitate entry into the slot 9. The corners 4b may be well rounded off. More than one separated part, with the corresponding lid slots, may be provided.
Patent GB-1370331-A (GB)
Title: Sports ball having an electrically conducting surface
Inventor: SUPRAN L
IPC: A63B39/08
Filed: 1971-03-03
Abstract: 1370331 Electric couplings L D SUPRAN 29 Feb 1972 (3 March 1971] 5865/71 Heading H2E [Also in Division A6] In order to indicate whether a ball, such as a tennis ball, has bounced in an out of play area on a court, the outer surface of the ball incorporates electrical conductive means which, upon contact with boundary marking tapes, shorts at least two of a plurality of wires 22 carried on the tapes which are connected to sources of potential and indicating means (see Specifications 1,370,332 and 1,370,333). As shown in Fig. 1, tennis court markings comprise tapes 10, 11, 12, 14a &c. which may be stuck to the court surface. Auxiliary sensing tapes such as at 18a, 16a, 17 are also stuck to the court and are of the same colour as the court surface 20a, 20b. The wires 22 may run in a zig-zag fashion along the tapes or they may be straight. In relation to the righthand service court area shown bounded by tapes 10, 12, 14a a ball is indicated as in court if it bounces during service on one of these tapes or on the auxiliary tapes 18b, 18c or 16a whereas if it bounces on the other tapes it is indicated as out. A ball bouncing in areas such as 20a is followed only visually and indication is only given for "close-call" balls near the court lines 10, 12 &c. As shown in Fig. 2 the conductive means on the ball surface comprises conductive steel wires 28 woven into the cloth so as to appear at the surface intermittently. In another embodiment, each panel 26 of the ball cloth receives a single wire (28) (Fig. 3, not shown) stitched into the cloth in a zig-zag manner. In a further arrangement a cloth woven from wool and staple sliver steel (27) (Fig. 4, not shown) and optionally nylon is used as the outer ball covering, the steel being distributed evenly over the surface. Steel may be replaced by other metals such as copper or aluminium.
Patent GB-452718-A (GB)
Title: Improvements in and relating to apparatus for determining the quantity of one or more of the constituents in samples of air, flue or other gases
IPC: G01N7/04
Filed: 1935-02-23
Abstract: <PICT:0452718/III/1> A constituent of a gaseous mixture is estimated by absorbing it from a known volume of the gas and measuring the reduction in pressure, or by allowing an added quantity of the constituent (e.g. water) to vaporize into the gas till the latter is saturated and measuring the increase in pressure.  Fig. 2 shows one form of the apparatus comprising a cylinder 1 in which slide three equidistant rigidly connected pistons 4, 5, 6 forming two chambers A, B.  A recess 13 in the cylinder wall contains the absorbent or vaporizable substances 15.  The pistons are normally displaced to the right so that chamber A communicates with recess 13 and piston 6 is beyond the end of the cylinder.  When the pistons are moved to the illustrated position a sample of the atmosphere is trapped in chamber B and subjected to the action of the absorbent, and chambers A, B are placed in communication with the ends of the manometer 11.  Fig. 3 shows an alternative form in which the absorbent chamber 20 is protected by a sliding cover 23. A raised extension 22 of the latter encloses a sample of gas and bring it into communication with the chamber upon sliding the cover to the left.  By applying the invention to air drawn from the interior of a block of solid material such as tobacco the moisture content of the latter may be estimated.
Patent GB-828000-A (GB)
Title: Roller briquetting press for pressing ores, coal, and similar substances
IPC: B30B11/16
Filed: 1957-02-22
Abstract: 828,000. Roller briquetting presses. KLOCKNER - HUMBOLDT - DEUTZ A.G. Feb. 22, 1957 [Feb. 25, 1956], No. 6040/57. Class 87(2). A press for briquetting ores, coal &c., comprising pairs of rollers 25 and 27, 26 and 28, geared to rotate in opposite directions, and a distributing box 4 for the material with a charging aperture 9, has its frame divided into detachably connected upper and lower portions whereby, after detaching and lifting the upper portion, the rollers can be rolled out of the machine frame on a support. The roller shafts 23, 24 are positioned by spacers 35, 36, 63 held by members 37, 38, 41, 42 which are released when the rollers are to be removed. The upper part of the press is lifted by a crane 18, Fig. 4, or screw jacks may be inserted between the upper and lower parts. A framework 62 of the heat conveyer 53 which carries material from a kneading device 54 to the distributing box 4 swings on joints 55, 56 and guides the movement. Beneath each briquetting roller is an eccentrically mounted roller 48, Fig. 6. An extraction rail 52 is inserted between the two and the shaft 49 of the roller 48 is rotated by a spanner applied to its square end 51 until the rail is given an inclination. Thus a pair of briquetting rollers can be rolled down two extraction rails. The material to be briquetted, mixed with a binder, is agitated in the device 54 by rotating arms 58 and preheated by steam through nozzles 61, then passing through a shoot 67 onto the belt 53. From the distributing box 4 the material is fed to the rollers through a shoot 11 which can be narrowed, to provide a degree of precompression of the material, by moving in one of its walls 12 by a rod 13 operated by a hand-wheel 14.