baber/WOPTO huggingface dataset:
Patent GB-273492-A (GB)
Title: Improvements in dry gas meters
IPC: G01F3/22
Filed: 1926-07-06
Abstract: 273,492. Thorp, F., and Parkinson & Cowan (Gas Meters), Ltd. July 6, 1926. Gas meters. - A dry gas meter comprises a central part b formed with a division wall c for the gas chamber, cover plates g, h detachably secured to the central part in such a manner as to clamp the edges of the diaphragms in position, a detachable cover a for the central part forming the gas inlet chamber, and means for operating the valves k controlling the flow of gas to and from the diaphragm chambers, such that each diaphragm operates the gas valve controlling the gas passages to the chambers formed by the other diaphragm. These gas passages are formed in the top of the central part b. The valve operating means consist of a pivoted radial arm l carried by each diaphragm engaging through a pin-and-slot connection an arm m secured to an horizontal spindle n which carries an arm p connected to a gas valve k by a link q and to the counter operating mechanism by a link r. The links q may slide in guide pieces s on the valve seats and be formed with grooves to engage projections on the valves. The connection between the links and valves are arranged as near as possible to the faces of the valves so as to prevent the valves from lifting on meeting obstruction.
Patent GB-784724-A (GB)
Title: Improvements in or relating to mechanical power transmission apparatus
Inventor: HOBBS HOWARD FREDERICK
IPC: F16H61/02
Filed: 1955-06-13
Abstract: 784,724. Controlling change-speed gearing. HOBBS TRANSMISSION, Ltd. April 16, 1956 [June 13, 1955], No. 16943/55. Class 80 (2). In a change-speed gear where changes of ratio are made by engagement of hydraulic friction clutches or brakes and in which the pressure in the system is varied in accordance with the position of the throttle, the pressure relief valve comprises a piston urged against the pressure by three springs to give three rates of increase of pressure corresponding to different positions of the throttle control. The relief valve 17 has two diameters sliding in two bores 14, 15 of a chamber having a third bore 16, the chamber being in communication at each end 12, 13 with a channel 11 connected to an oil pump circuit. An exhaust duct 44 communicates with the chamber 14. The valve 17 seats on a ring 20 under pressure from a first spring 21 seating on a plunger 22 carried by a rod 23 actuated by an accelerator pedal 29. Under idling conditions, the valve is loaded only by the spring 21 and by differential pressure fed from the channel 11 through a shut-off valve 51 to the smaller diameter of the valve 17. A small opening of the throttle brings an abutment 38 on the rod 23 into contact with a ring 32 to compress a second spring 30 to cause an increase in the hydraulic pressure. Further movement causes spring 30 to be loaded to the initial loading of a third spring 42 between the abutment 38 and an abutment 39 on the rod 23, and the pressure is then controlled by the three springs. The spring loading is relieved from the accelerator by pressure in the chamber 13, and for at least top gear ratio the valve 51 is closed to reduce the fluid pressure in the system in the lower torque ratios.
Patent GB-802796-A (GB)
Title: Method of preparing hydrocarbon-tin compounds
IPC: C07F7/22
Filed: 1957-05-29
Abstract: Tin chlorides, their complexes with alkali metal chlorides, or hydrocarbon tin chlorides are reacted with hydrocarbon aluminium compounds and before, during or after the reaction and before the resultant hydrocarbon tin compounds are removed, alkali metal chloride is added to form complexes with the aluminium chloride produced in the reaction.  In consequence the hydrocarbon tin compounds may be distilled or decanted from the reaction mixture. In the event of the aluminium hydrocarbon interfering with the distillation, aluminium chloride may be added to form AlRCl2 which complexes with the added alkali metal chloride.  Solvents or diluents may be used in carrying out the reaction.  Reaction may be carried out at temperatures up to about 200 DEG  C.  If desired, the aluminium hydrocarbon may be prepared at the same time as the required tin hydrocarbon by reacting alkyl halide with a suspension of aluminium in stannic tetrachloride or by passing an alkyl halide/stannic tetrachloride vapour mixture over aluminium chips.  In an example, sodium chloride is added to a solution of triethyl aluminium in hexane.  Stannic tetrachloride in hexane is then added, followed by the addition of aluminium trichloride and sodium chloride at the end of the reaction.  Stannic tetraethyl is then distilled from the reaction mixture.
Patent GB-987026-A (GB)
Title: Pulse generator
IPC: H03K3/02
Filed: 1962-05-04
Abstract: 987,026. Transistor pulse generating circuits. C. P. CLARE & CO. May 4, 1962 [May 12, 1961], No. 17169/62. Heading H3T. A pulse generator comprises a pair of transistors 12, 14 controlling a relay 16 provided with a pair of normally closed contacts 22 and a pair of normally open contacts 24, the base of the first transistor 14 being connected to a timing capacitor 30 charged from a potential source 28 over a path including the pair of normally closed contacts 22 and discharged over a path including the pair of normally open contacts 24 and the second transistor 12, the discharge time being controlled by this latter transistor. The arrangement is such that when transistor 14 is rendered conducting relay 16 operates to energize output relay 18 and to render transistor 12 conductive which subsequently renders transistor 14 non-conductive to release relays 16, 18 and to render transistor 12 non-conductive. Capacitor 30 is charged over the circuit including potentiometer 32 and closed contacts 22 until the base of transistor 14 becomes negative with respect to its emitter, biased by means of a network of resistors 34, 40, 26, 36, 38 and potential source 28, and transistor 14 conducts so as to energize winding 20 of relay 16. Contacts 22 are thus opened and contacts 24 closed with the result that the charging circuit of capacitor 30 is interrupted, output relay 18 is operated and a circuit for controlling the time period that transistor 14 remains in a conductive condition is completed, i.e. battery 28 is connected in series with a voltage dividing network including resistors 52, 56 and potentiometer 54. The base of transistor 12 is thus biased negatively with respect to its emitter and this transistor conducts to provide a discharge path for the timing capacitor 30. Thus by varying the setting of the potentiometer 54 the effective collector impedance of transistor 12 is varied to control the time required to discharge capacitor 30. When the capacitor 30 has discharged to the point when the base of transistor 14 is no longer negative with respect to its emitter this transistor is rendered non-conducting so that relay 16 releases to close contacts 22 and open contacts 24, release relay 18 and render transistor 12 non-conductive. Capacitor 30 is thus able to commence charging again under the control of potentiometer 32 and the operation of the circuit is repeated.
Patent GB-773577-A (GB)
Title: Improvements in waist bands for trousers and like garments
IPC: A41F9/02
Filed: 1953-06-22
Abstract: 773,577. Waist bands for trousers &c. RODGERS, S. M. June 22, 1954 [June 22, 1953], No. 17272/53. Class 141. A waist band for trousers or the like has a band of non-extensible material e.g. petersham stiffened in directions perpendicular to its length and having dependent from it a curtain or corselet g capable of extending around the wearer below the waist, the whole or one or more portions of the curtain being composed of elastic fabric so that when in use it fits closely round the body of the wearer. The stiffeners may be whalebone strips f secured between the two layers a, b of the waist band as shown in Fig. 2. The curtain g is vertically stiffened by whalebone strips inserted in linen pockets k. The curtain may consist' of a single piece as shown in Fig. 1 or two or more portions connected together by linen or similar material. The ends of the curtain g are connected by pieces u of linen or the like to fasteners t, w independent of the waist band and fly fastener p so that the curtain can be fastened around the body before the waist band is fastened.
Patent GB-595659-A (GB)
Title: Improvements in lawn mowers
IPC: A01D34/42
Filed: 1945-07-06
Abstract: 595,659. Lawn-mowers. BYFORDS, Ltd., KERR, J. R. A., PARSONS, S. E., and DULSON, A. W. July 6, 1945, Nos. 17332 and 23471. [Class 6 (ii)] Relates to mowing-machines wherein the frame has a 'pair of side members 12 spaced apart by transverse members 13, 14 and 15 and a detachable unit comprising a rotating cutter mounted between a pair of side plates 26. According to the invention the frame side members are disposed close to the sides of the removable unit and the forward edges of the side plates of the latter are slotted 27, to engage pivotally the cross-bar 14, the rotating cutter being fixed on a spindle 24 which projects through an arcuate slot 54 in one of the members 12, this end of the spindle having a detachable gear wheel 57 for transmitting the drive from a supporting roller 10 to said spindle, whereby the detachable unit can readily be removed by taking off said gearwheel and then pivoting the unit about the axis of the crossbar 14. The side plates 26 are connected by a transverse bar 30 whose reduced threaded ends project through arcuate slots 32 in the frame members 12. The unit may be locked in any desired position by means of washers, suitably apertured to fit over a flat on the end of the bar 30, being advanced along the threaded end 31 by nuts 39 until the V-sectioned ribs on the washers interlock with racks of teeth 40 in the slot 32. A grass deflector 41 provided with a shear blade 44 extends between the side plates 26 to which it is pivoted at 43, about which point it can be adjusted by a lug 45 carrying a threaded pin 46 engaged by nuts 47, 48 on opposite sides of the bar 30, said pin passing through said bar. An eccentric may be provided on the pivot 43 for correct alignment of shear blade. A cover encloses both sprocket wheels and their connecting chain. The machine may be hand or power propelled. The first Provisional Specification describes the unit to be pivoted on the spindle of the front rollers or on a pair of projections on the inner sides of the main frame members. The second Provisional Specification describes a modified washer which is positively withdrawn with the nut by means of hook-like projections.
Patent GB-946927-A (GB)
Title: Improvements in or relating to preserving milk-based foods
Inventor: PERRY GEORGE ALEXANDER
IPC: A23C9/13
Filed: 1960-05-17
Abstract: Cultured milk products contain 0.03-0.2% of sorbic acid for promoting growth of useful bacteria, e.g. Lactobacillus and Leuconostoc spp., and inhibiting growth of spoilage bacteria, e.g. those causing off-flavours, slime and ropiness.  The products include cottage, creamed cottage, cream, pot and baker's cheeses, yogurt, cultured milks, cultured buttermilk, i.e. milk or skim milk fermented with lactic acid bacteria, and cultured sour cream, and are generally of pH 4.5-6.4.  The sorbic acid is incorporated as such or as the calcium, potassium or sodium salt; for creamed cottage cheese the sorbic acid or salt thereof is preferably dissolved preliminarily in the preparation of cream with milk or skim milk to be mixed into the curd.
Patent GB-1223837-A (GB)
Title: Improvements relating to humidity control arrangements
Inventor: KNIGHT WILLIAM
IPC: F24F3/14
Filed: 1967-04-14
Abstract: 1,223,837. Air humidity control arrangement. PLESSEY CO. Ltd. 26 April, 1968 [14 April, 1967], No. 17363/67. Heading B1R. [Also in Division F4]  Air within a central portion 4 of a test compartment is circulated by a fan 8 through a duct lying between walls 5, 6 and 7 and the walls of the compartment, the duct below wall 5 being divided by a partition 9 and a proportion of the circulating air controlled by a valve 11 is passed over the surface of a water bath 10 to increase the humidity of the air within the portion 4. Electrical heating elements 12 and 13 are provided to heat the water back and the circulating air respectively.
Patent GB-1043924-A (GB)
Title: Electric circuit interrupters
IPC: H01H73/20
Filed: 1964-04-27
Abstract: 1,043,924. Automatic circuit breakers. WESTINGHOUSE ELECTRIC CORPORATION. April 27, 1964 [May 10, 1963], No. 17371/64. Heading H2B. A circuit breaker is provided with a terminal conductor 23 extending from the base of its insulating housing 11, 13 and having an end portion lying parallel to said base and boltable to a conductor 35 so as to support the breaker on a switchboard 109 (Fig. 5, not shown) as well as to connect it with bus bars A, B, C. The terminal 23 carries at the other end the fixed contact 15 of the breaker and is clamped in place by a bolt 29 and nut 27, the latter forming an arc runner, part of an arc extinguishing chamber 83. The right angle bend is reinforced with two ribs 125. In a modification .(Fig. 6, not shown) the right angle bend is replaced by two, spaced 45-degree bends strengthened by a single rib 125<SP>1</SP>.
Patent GB-800802-A (GB)
Title: Furnace wall structure
IPC: F27D1/00
Filed: 1956-06-06
Abstract: 800,802. Furnace walls. BIGELOW-LIPTAK CORPORATION. June 6, 1956 [June 6, 1955], No. 17452/56. Classes 51 (1) and 51 (2). In a furnace wall including vertical columns 3 carrying vertically-spaced horizontal bars 5, each refractory lining tile 41 rests on a hanger 23 and a shoulder 63 at the top of the tile engages behind a flange 49 on the next hanger 23 above, the hangers 23 are detachably mounted in an inwardly-directed opening in the bars 5 with upwardly-directed flanges 25 engaging a lip 15, and a layer of insulation 59 is held between the tiles 41 and the inner faces of the bars 5, the thickness of the tiles and of the insulation being such that the bars are not subjected to temperatures above 900‹ F. The bars 5 and hangers 23 are of different metals, and a downwardly-directed flange 27 on each hanger engages a groove in the lower limit of the bars 5. To increase stability, the lower flanges 27 are wider than the upper flanges 25. Each hanger, Fig. 4, has a cutaway triagnular shank and an upper flange 33 at the inner end which engages a shoulder 65 at the bottom of a refractory tile. Filler tiles 71 are held in place by shoulders on the tiles 41, and the spaces are filled by fireclay or cement. The insulation 59 is in the form of blocks with notches to allow the hangers 23 to pass through it, and its outer surface is covered with plastic insulating cement 81 held in place by shoulders 83 on the horizontal hanger bars 5. Keying grooves and ridges may be formed at the sides of the tile blocks. In a modification, Fig. 6, the hangers 103 have a horizontal shank on which the upper tile rests, and a downwardlydirected flange 105 engaging a shoulder on the tile below. The tile above may have a shoulder 117 engaging the top surface of the hanger.
Patent GB-356257-A (GB)
Title: Improvements relating to electric vacuum tube circuits
IPC: H03F1/16
Filed: 1930-06-05
Abstract: 356,257. Valve amplifying circuits. BRITISH THOMSON-HOUSTON CO., Ltd., Crown House, Aldwych, London.-(Assignees of Ring, A. D. ; 419, Union Street, Schenectady, New York, U.S.A.) June 5, 1930, No. 17456. Convention date, June 5, 1929. [Class 40 (v).] The inter-electrode capacity of a valve having input and output circuits connected to it by relatively long leads is neutralized by the provision of an inductance 21 connected to the anode through neutralizing condenser 22 and directly, or through a blocking condenser 15, to the grid. The inductance is arranged adjacent to the valve and has a tapping connected to the cathode of the valve.
Patent GB-1177857-A (GB)
Title: Improvements in or relating to Buckling Folding Machines
IPC: B65H45/14
Filed: 1967-04-17
Abstract: 1,177,857. Folding paper. MATHIAS B€UERLE G.m.b.:H. 17 April, 1967 [29 April, 1966], No. 17491/67. Heading B8R. In a buckling-folding machine the folding pocket 6 is adjustable relative to the folding rollers 2, 5 and 7, by pivoting on lugs 10 about bearing stubs 11 at both ends of roller 7, such that one wall of the pocket 6 remains tangential to roller 7. Elongated slots 13 in side plates 12 enable the desired pocket angle to be set, e.g. such that the paper entry angle is variable from 40-60 degrees. The pocket may be pivoted about bearings 11 to permit removal of a jammed sheet (Fig. 4, not shown). A deflector wedge (15, Fig. 5, not shown) may be inserted into the mouth of the folding pocket to render it inoperative. In a further form (Fig. 5), the folding pocket may be held in place by a spring clip (17) which engages a bar (18) attached to side frame 12.
Patent GB-540438-A (GB)
Title: Improvements relating to focus indicating means on photographic cameras
IPC: G03B17/02
Filed: 1940-12-10
Abstract: 540,438. Photographic cameras with focusindicators. KODAK, Ltd. Dec. 10, 1940, No. 17500. Convention date, Feb. 16, 1940. [Class 98 (i)] A camera of the type in which the objective is carried by a telescopic mount movable from within the body to an extended picture-taking position is provided with a focus indicating means and an adjusting means for it both carried on the body, and the telescopic lens mount is provided with an abutment which, when the mount is extended, comes into operative relation to the adjusting means and automatically adjusts the focus indicating means upon focusing of the objective. As shown, a tube 9 carrying the objective is extended from the camera body by rotation of a sleeve 7 which engages it and a ring 6 on the camera front by oppositely-handed threads, focusing being also performed by rotation of the sleeve, which may be effected by a ring 8 or by a knob (not shown) inter-geared with teeth 18 on the rear end of the sleeve, as described in Specification 532,610. Rotation of the tube 9 is prevented by pins 12 passing from it through slotted brackets 14. When the tube 9 is extended, the head of a screw 24 screwed into a lug on its rear end engages a pin 26 on an arm 27 attached to a shaft 29. Further extension of the tube 9 for focusing therefore causes the shaft 29 to rock against the action of a spring (not shown) and through a gear sector secured to its upper end to drive a pinion which rotates a disc 20 carrying a focusing scale, the disc being mounted beneath a transparent window 21 bearing an index mark and a depth of focus scale.
Patent GB-1416480-A (GB)
Title: Corona discharge device cleaning assembly
IPC: H01T19/00
Filed: 1973-04-12
Abstract: 1416480 Corona charging apparatus XEROX CORP 12 April 1973 [19 April 1972] 17680/73 Heading H1X A corona discharge device comprises at least one corona discharge electrode 20, a conductive  shield 14 disposed in partially surrounding relationship with respect to said discharge electrode, a resilient wiper member 40 positioned within said shield and in wiping contact with both said shield and said electrode, and means for moving said wiper member 40 along said electrode and said shield so as to clean each. The shield 14 includes insulating end members 16 and 18 and a baffle 22 between the corona wires 20. The wiper member 40 formed of non- abrasive material, e.g. expanded polyester is clamped between two plates 52 fixed to rods 46 and 48 which slide in grooves 34 and 36 formed in side members 26 and 28 of the shield 14 and are fixed to a handle for moving the wiper member which has slits to receive the corona wires 20 and the baffle 22. Supports 30 and 32 engage arms 60 of a copying machine. A second handle 23 facilitates removal of the device from the machine.
Patent GB-266202-A (GB)
Title: Improvements in or relating to valves
IPC: F16K1/36
Filed: 1926-07-16
Abstract: 266,202. Johnson, L. S. July 16, 1926. Closure members.-In a valve member comprising a disc element 6, a gasket or valve washer 8, and a nut 9 for securing the washer to the disc, the nut is formed with a cylindrical face 11 adapted to fit the walls of the valve seat passage 4 and a downwardly converging face 12. In a modification the cylindrical part 11 is formed on the washer 8.
Patent GB-690945-A (GB)
Title: Improvements in or relating to high pressure diaphragm
Inventor: MULLER WALTER
IPC: F16J3/02
Filed: 1950-07-17
Abstract: 690,945. Pistons. NATIONAL RESEARCH DEVELOPMENT CORPORATION. July 9, 1951 [July 17, 1950], No. 17864/50. Class 122(i) In a diaphragm device in which vanes 7 on an axially movable member 5 fit and slide longitudinally between internal ribs 10 on a casing 3, there is interposed between the diaphragm 1 on the one hand and the vanes 7 and ribs 10 on the other hand, a backing 15 comprising a series of interfitting annular members which are displaceable relative to one another in the axial direction. The annular members have rounded edges engaging the vanes and ribs which may be stepped to fit the edges. A subsidiary diaphragm may be interposed between the ribs and vanes and the backing which may then be lubricated.
Patent GB-118957-A (GB)
Title: Improvements in or relating to Tickets, Badges, Passes and the like.
IPC: G09F3/14
Filed: 1917-12-04
Abstract: 118,957. Brown, W. H., and Metropolitan Railway Co. Dec. 4, 1917. Season tickets, badges, passes, &c. comprise a plate A provided with an undercut recess F for the reception of a card L bearing the variable particulars, adapted to be cut out and renewed by an authorized person, but incapable of removal without damage. A transparent cover M of celluloid &c. is placed over the card L. Permanent particulars are represented by inlaid patches J, H of enamels of different colours on both sides of the plate A. A hole K enables the ticket to be suspended by a chain.
Patent GB-222597-A (GB)
Title: Television
IPC: H04N3/08
Filed: 1923-07-12
Abstract: 222,597. Robb, F. M., and Martin, R. H. July 12, 1923. Oscillographs. - In a receiver for a television system, the current traverses a pivoted coil 25 mounted between field magnets 24, the coil being wound as shown in Fig. 5 and' carrying an opaque sheet 28 allowing the passage of more or less light from a lamp according to the strength of the current.
Patent GB-1269557-A (GB)
Title: Centering device for annular extrusion dies for the manufacture of plastics material shapes
Inventor: LANGECKER ERHARD
IPC: B29C48/09
Filed: 1969-04-09
Abstract: 1,269,557. Extrusion dies. E. LANGECKER. 9 April, 1969 [18 Oct., 1968], No. 18085/69. Heading B5A. An adjustable tube-forming extrusion die comprises an annular die body part 10 having a weakening groove 26 bridged by one or more, preferably four, bolts 20, such bolts being mounted so that the groove may be deformed thereby adjusting nozzle 14, attached to the downstream end of body part 10, relatively to mandrel 30. Each bolt 20 is screw-threaded at both ends, the downstream end engaging body part 10 and having an adjustment nut 19 thereon and the upstream end passing through a sleeve 22 housed in a flange 7 and carrying an adjustment nut 23. As shown, appropriate rotation of nut 19 widens groove 26 on the left hand side and so moves nozzle 14 transversely to the right. Similarly, appropriate rotation of nut 23 decreases groove 26 on the left. In both cases each nut is initially loosened and the nut not affecting the groove width is subsequently tightened to act as a counter-nut. Groove 26 contains a ring 12 of heat insulating material and heaters 3, 5, 13 and 16 are provided.