baber/WOPTO huggingface dataset:
Patent GB-479077-A (GB)
Title: Improvements in or relating to collapsible containers for pasty, semi-fluid and like substances
IPC: B65D83/00
Filed: 1936-12-16
Abstract: 479,077. Collapsable containers. DAVIS, C. Dec. 16, 1936, No. 34608. [Class 66] An axially-collapsable pleated container having the pleats 1 extending outwardly relative to the upper and lower tubular end portions 2, 3, Fig. 3, is provided with a casing 5, Fig. 4. of metal, cardboard &c., or of transparent material, supported on the uppermost pleat, the casing terminating if desired in a tubular neck portion fitting over the upper tubular end portion. The lower end of the container is fitted with a stopper or piston 6 and a detent, such as a spring 6<1> mounted on a ring device 7, 8, Fig. 6, sliding on the exterior of the casing is provided to prevent return movement of the partially collapsed container. The casing may comprise two portions, one of which is slidable telescopically within the other. A brush &c. holder 11 may be provided on the casing. Specification 479,037 is referred to.
Patent GB-1512669-A (GB)
Title: Circuit for maintaining operating point stability of an amplifier
IPC: H04N9/64
Filed: 1975-08-21
Abstract: 1512669 Transistor amplifiers: television RCA CORPORATION 21 Aug 1975 [9 Sept 1974] 34764/75 Headings H3T and H4F In a clamping circuit for intermittently setting the potential on a capacitor to maintain the D.C. level of an output signal, e.g. to each gun of a colour TV tube, first and second amplifying devices, shown as bipolar transistors 46-, 48- but alternatively FET's or valves, each have their control electrodes (bases, gates, grids) D.C. connected to one of the other main electrodes of the other device, the capacitor carrying signal to the control electrode of the first device and to a first main electrode of the second device: a charging voltage supplied intermittently to the other main electrode of the second device causes this device to conduct to allow the capacitor to charge, fixing the potential of that electrode of the first device which is coupled to the control electrode of the second, independently of the voltage existing across the first device. The three guns 38a, b, c, of the colour tube are supplied with a common luminance signal Y from the luminance processing unit 20 via pnp transistor 50, combined with the three chrominance signals R-Y, B-Y, G-Y in three identical drive circuits 44a, b, c, A.C. coupled via capacitors 54a, b, c and amplified by npn transistors 46a, b, c. The D.C. levels on the emitters of transistors 46- tend to wander and are periodically clamped by the application to the bases of npn transistors 48- of the negative-going blanking pulses (V A , Fig. 2, not shown) from the horizontal deflection unit 32 during line fly-back. The blanking pulse causes transistors 48- to conduct to allow the capacitors 54- to charge rapidly until the voltage equals V A  plus the two base-emitter drops V be2-  + V be1- , the emitters of 46- being at V A  plus the base-emitter drops V be2-  of transistor 48-. These D.C. levels are substantially maintained during the line scan periods, independent of the A.C. signals passed by transistor 46-, the large time constants of the capacitors 54- with resistors 60- and the base currents of transistors 46- ensuring that the voltages on the capacitors drift upwards only slowly. Variable resistors 58- or alternatively 56- are available for independent bias current control on transistors 46-, and variable resistors 52- for gain control, acting as emitter loads in the common base amplification of luminance signals and the common emitter amplification of chrominance signals. The base-emitter drops V be2-  of transistors 48- may be equalized by integrated construction: being in low power circuits their temperature is relatively stable; they should be physically separate from transistors 46-.
Patent GB-980817-A (GB)
Title: Improvements in or relating to regulated d.c. power supply circuit arrangements
Inventor: GREENFIELD RAYMOND LESLIE
IPC: G05F1/573
Filed: 1962-09-13
Abstract: 980,817. Automatic voltage regulators.  MARCONI CO. Ltd. July 25, 1963 [Sept. 13,1962], No. 34915/62. Heading G3R. [Also in Divisions H2 and H3] A voltage regulator of the series transistor type includes means operable in dependence on current through the transistor and in excess of a predetermined value for closing a shunt path for the base current of the transistor. As shown, a voltage regulator comprises input terminals A, output terminals B, a series transistor T2 controlled in known manner by an amplifier C to maintain constant the output voltage at terminals B, a resistor R2 in series between the emitter of transistor T2 and one output terminal, and a Zener diode ZD subject to the voltage drop across resistor R2 and connected between the base of transistor T2 and the said one output terminal. When the current through resistor R2 exceeds a predetermined value, Zener diode ZD conducts to provide a shunt path across the emitter-base path of the transistor so that the base current is reduced and the current through the transistor is limited at a substantially constant value, whereby the transistor is protected against overload. A further Zener diode ZD<SP>1</SP>, connected in series with a resistor R4 across the collector-emitter path of the transistor T2 is rendered conductive when the voltage across the transistor exceeds a predetermined value, e.g. when output terminals B are short-circuited, whereby the transistor is protected against excessive power dissipation.
Patent GB-502274-A (GB)
Title: Improvements relating to buckles and slides
IPC: A44B11/02
Filed: 1937-12-17
Abstract: 502,274. Slide buckles. NEWEY 13ROS., Ltd., and NEWEY, A. J. Dec. 17, 1937, Nos. 34934/37 and 9954/38. [Class 43] A slide buckle for suspenders &c. consists of a rectangular pressing or stamping having a transverse slot c adjacent to its upper end f, the upper edge d of the slot being toothed and turned slightly to the rear while the lower edge c is toothed and turned to the front. The lower part of the pressing below the slot is bent round to the rear and toothed to form an upwardly facing jaw g which is closed on the end of the strap j. A wire loop k is preferably carried in the jaw, being held in position by eyes m which are formed by slitting and curling over the sheet metal and are set in from the sides so as to limit the forward movement of the loop. The sides of the buckle are strengthened by rearwardly directed flanges b. Pressed-out pips i improve the grip of the jaw.
Patent GB-411528-A (GB)
Title: Improvements in and relating to lehrs with roller beds
IPC: C03B25/06
Filed: 1932-12-09
Abstract: 411,528. Glass annealing leers. PILKINGTON BROS., Ltd., 703, Tower Building, Water Street, Liverpool, and WALDRON, F. B., Norwood, Eccleston Park, Prescot, Lancashire. Dec. 9, 1932, No. 34969. [Class 51 (ii).] Charges, conveying.-In a roller-way glassannealing leer 1, loss of heat by conduction to the outside is minimized by locating the rollers 3 entirely within the leer and forming the drivetransmitting rod 7 and the supporting and adjusting members 11, 14 for the bearing blocks 5 of small cross section. To provide a flexible driving connection each rod 7 passes through an asbestos bushing 19 and is formed with squared ends 6, 8 slidably engaging in square holes in the roller bearing pin 4 and in an external worm wheel 9 respectively. The bearing blocks 5, Fig. 1, are adjustable both vertically and transversely of the leer by nuts 12, 17 on the rods 11, 14, the vertical movement being permitted by a sliding connection between the inner ends of the rods 14 and pins 16 on the blocks 5. In the modification shown in Fig. 3, the bearing blocks 20 are adjustable vertically in their supporting troughs 21 by the rods 14 each of which carries on its inner end a wedge 24 engaging the lower inclined surface 23 of the block 20.
Patent GB-416764-A (GB)
Title: Improvements in or relating to fuzes for projectiles and particularly for small calibre high explosive projectiles
IPC: F42C9/14
Filed: 1933-12-12
Abstract: 416,764. Projectile fuzes. RHEINISCHE METALLWAAREN UND MASCHINENFABRIK, 195, Ulmenstrasse, Derendorf, D³sseldorf, and SCHLAFER, V., 5, Uhlandstrasse, S÷mmerda, both in Germany. Dec. 12, 1933, No. 34976. [Class 9 (i).] A time and percussion fuze particularly for anti-aircraft projectiles, is provided with delaymeans and means for automatically firing the charge after a predetermined interval. In the form shown, the firing-pin d is normally held clear of the primer e by a slide f backed by a powder charge g. Fitted between the pin d and the nose c is a plunger b having an explosive section p. The latter is fired after a predetermined interval, if the projectile has failed to strike an objective, by a time-fuze n. When the gun is fired, a primer l moves in its bore k, against the pressure of a spring l<1>, to abut a pin i. The bore k communicates with the charges g and n. The effect of firing the charge g is to release the member f which, by centrifugal force, frees the pin d for actuation by impact of the nose c, or by the firing of the charge p.
Patent GB-1159331-A (GB)
Title: Improvements in and relating to an Apparatus for Separating and Transferring Objects
IPC: B65G47/08
Filed: 1966-08-05
Abstract: 1,159,331. Endless conveyers; shoot discharge. SCHWEIZERISCHE INDUSTRIE - GES. 5 Aug., 1966 [6 Aug., 1965], No. 35100/66. Headings B8A and B8S. Disc-shaped objects, e.g. biscuits, are separated into stacks as they slide down shoots 1 the stacks being seized by gripper assemblies 2 which transfer the stacks to a packaging machine 4 via a conveyer. Each shoot 1 is of U- shaped cross-section in its upper portion but its lower portion has one side wall omitted to permit operation of the associated gripper assembly 2. A support 12 for the biscuits is slidable along the shoot and a separator 13 slides transverse to the shoot to form the stacks. Each gripper assembly is mounted on a shaft 14 which is axially displaceable and pivotable about its longitudinal axis. The assembly includes a clamp 18a secured to a piston rod 17 of an air or oil actuated cylinder-piston device 16. To the cylinder is attached a rod 20 and a clamp 18b, the clamp 18a being slidable on this rod. Axial displacement of the piston rod 17 causes the clamps to seize and release the biscuits. The conveyer comprises a U-shaped channel 21, each stack of biscuits being engaged by a pusher 23 on an endless chain 22.
Patent GB-387477-A (GB)
Title: Improvements in or relating to trip-freed toggle mechanisms
IPC: H01H71/50
Filed: 1931-12-21
Abstract: 387,477. Toggle linkages. ELLIS, I. S., 19, St. George's Road, Stretford, near Manchester, and ASSOCIATED ELECTRICAL INDUSTRIES, Ltd., Crown House, Aldwych, London. Dec. 21, 1931, No. 35342. [Class 80 (iii).] Relates to trip toggle mechanism of the type in which one member comprises a secondary toggle, which norally is locked rigid, but is collapsed when abnormal conditions occur, and consists in forming the secondary toggle of three links 3, 4, 5, of which 3 bears at 6 upon the part to be moved, such as an electric circuitbreaker, and the other two are pivoted to the first, at 7, 9, and on the main pivot 8, one of the pivots being releasable. In the form shown the secondary toggle is held rigid by the engagement of a notch in the link 5 with a roller on the main pivot 8. In this case the circuit is closed by simple toggle action at the pivot 8 by raising a hand-lever 2 rigid with the link 1. The link 5 carries a pin 14 which bears on the shaped edge 18 of a lever 15 having a fixed pivot 16 and resting on a rod sensitive to abnormal conditions. If the lever 15 rises or if the lever 2 is retracted momentarily in its upward movement, the link 5 is unlatched and the secondary toggle collapsed so that the circuit-breaker is not operated.
Patent GB-487795-A (GB)
Title: Improvements in or relating to the manufacture of artificial resin compositions of low temperature sensitivity
IPC: C08L33/06
Filed: 1936-12-24
Abstract: Compositions of low temperature sensitivity are produced by incorporating cellulose tripropionate with one or more products obtained by the polymerization of the methyl and/or ethyl esters of acrylic and/or methacrylic acid, during or after polymerization.  The said polyacrylic or polymethacrylic acid esters may be used with their higher esters or with vinyl acetate or vinyl chloride.  The compositions may be used in the manufacture of films, safety glass, transparent casings or wrappers, lacquers, artificial leather, artificial silk, adhesives, and the like.  Examples describe (1) the preparation of a lacquer by mixing a solution of polyethyl acrylate in ethyl acetate with a solution of cellulose tripropionate in benzene-acetone alcohol; (2) the manufacture of safety glass using an interlayer comprising a film of polyethyl acrylate and cellulose tripropionate, and dibutyl phthalate as plasticizer; (3) the manufacture of a safety glass by spacing two sheets of glass by spacing members made of polymers or gelatine, filling the chamber formed with a mixture of ethyl acrylate, cellulose tripropionate, acrylic acid and benzoyl peroxide, and polymerizing the mixture; (4) the manufacture of artificial silk from a mixture of solutions of polymethyl methacrylate and cellulose tripropionate.  Specification 454,461 is referred to.
Patent GB-1139176-A (GB)
Title: Wax mixtures
IPC: C08L23/10
Filed: 1966-08-08
Abstract: 1,139,176. Olefin copolymer compositions. FARBWERKE HOECHST A.G. 8 Aug., 1966 [7 Aug., 1965], No. 35417/66. Heading C3P. [Also in Division C5] Wax coating compositions comprise a petroleum wax and a predominantly amorphous copolymer of at least two α-olefines each containing more than 2 carbon atoms per monomer molecule. Monomeric constituents include pentene - 1, 3 - methyl butene - 1, hexene - 1, 4- methyl pentene-1, 4-phenyl pentane-1, undeceno-1, and octadecene-1, but the preferred copolymer consists of 5-95% butane-1 and correspondingly 95-5% propylene. The copolymer constitutes 1-70%, preferably 20- 40%, by weight of the wax-copolymer mixture.
Patent GB-1189879-A (GB)
Title: Relief Valve
IPC: F16K17/08
Filed: 1967-08-02
Abstract: 1,189,879. Valves. STERER ENG. & MFG. CO. 2 Aug., 1967 [16 Sept., 1966], No. 35422/67. Heading F2V. A relief valve 10 for use with pressures in excess of 1000 p.s.i., comprises a base 12 and a cap 14 attached thereto, there being secured between the base and cap a metallic diaphragm 24 which is forced to bear against an annular seat 20 by means of a spring 30 acting through a follower 31 and a part spherical pressureapplying member 32, the member being guided within an annular ring 28 and having a flat face 24 which bears on the diaphragm and has a diameter which is greater than that of the seat. The annular seat separates an outlet duct 18 from an annular inlet channel 16 disposed concentrically around it, the channel being in permanent communication with an inlet line 15. The diaphragm is advantageously made of copper berryllium alloy. In a modification, the inlet and outlet ducts may be interchanged.
Patent GB-1484566-A (GB)
Title: Coating of particulate material
IPC: A61M1/36
Filed: 1973-07-26
Abstract: 1484566 Polymer coated porous particles; coating apparatus T J SMITH & NEPHEW RESEARCH Ltd 22 July 1974 [26 July 1973] 35676/73 Headings B2E and B2L [Also in Division Cl] Porous absorptive particles, e.g. carbon or polystyrene are coated with a biocompatible polymer, e.g. polyhydroxyethylmethacrylate, cellulose acetate, polyurethane, silicone or polyamide, which hinders mechanical breakdown of the particles and provides a smooth permeable particle surface without plugging the pores. Up to 20%, preferably 0.5 to 5% of polymer may be used. A method for preparing such material comprises heating a mass of the particles while causing or allowing them to adopt relative motion and spraying the heater particles with a polymer solution. The solvent is allowed to evaporate. Apparatus for coating the particles, e.g. carbon granules 23, comprises means for holding the mass of porous absorptive material, e.g. rotary coating pan 21, while causing or allowing relative motion of the individual particles, a spray head 25 for supplying polymer solution to the mass and means to heat the mass, e.g. heated air from duct 24.
Patent GB-1529136-A (GB)
Title: Bobbins for electrical coils
IPC: H01F5/02
Filed: 1977-08-25
Abstract: 1529136 Bobbins PYE (ELECTRONIC PRODUCTS) Ltd 25 Aug 1977 35682/77 Heading B8M [Also in Division H1] A bobbin assembly for an electric winding (Fig. 2) comprises a first insulant plastics bobbin 1 of, e.g. nylon, and a second bobbin 2 of the same; having central core members 3, 6 with respective end cheeks 4, 5; 7, 8 which define winding spaces therebetween. Integral parallel members 9, 10 of each cheek 4 are conjoined by end member 11 so as to form a rectangular hollow prismatic socket housing the second bobbin 2 inserted from above. Member 11 is rebated to receive terminal block 12 of the cheek 8 of bobbin 2. A similar terminal block 14 may be provided on cheek 5 of bobbin 1. The magnetic core may traverse the central core members 3, 6 through opening 16, and in a modification (Fig. 4, not shown) the second bobbin may be inserted in the housing from above or below. A shield may project from member 11 to isolate the terminals from the magnetic core, and the terminal blocks may carry voltage selector taps and fuses (Figs. 5, 6, not shown). The end cheek 7 of bobbin 2 may carry an orthogonal shield resting on the end cheek 5 of the first bobbin to cover part of its winding space, and may carry a flange protecting terminal block 14. (Figs. 7, 8, 9, not shown) and an orthogonal shield carried an end cheek 7 of bobbin 2 by a flexible web may cover part of its winding space (Fig. 10, not shown). A transformer (Fig. 11) may be wound on such a bobbin assembly with secondary coil 23 on bobbin 1 and primary coil 24 of fine wire on bobbin 2, with an EI laminated core 25 therein, members 9, 10 insulating winding 24 from the core. Other insulators (not shown) may be provided to isolate winding 23 from the core and overlap members 9, 10 with an orthogonal portion overlapping end cheek 5.
Patent GB-303502-A (GB)
Title: Improvements in or relating to the injection of liquid fuel into the cylinders of internal combustion engines
IPC: F02M67/00
Filed: 1928-12-04
Abstract: 303,502. Jalbert, J. H. Jan. 6, 1928, [Convention date]. Addition to 286,670. Cylinders receiving liquid fuel.-In apparatus for operating an engine in which a rich mixture is compressed in an auxiliary cylinder 3 and driven by a piston 4 past a spring- loaded valve 6 into the combustion chamber, as described in the parent Specification, the rich mixture is drawn into the cylinder 3 by the piston 4 when it uncovers, at the end of its outstroke, one or more rows of small ports 20 connected to a carburettor 21. Spray-carburettors. - The orifice of the fuel nozzle 32 is controlled by a needle valve, and a resilient sheet-metal plate 31 is pressed by an adjustable spring 39 to close the outlet 41 until the piston in the cylinder 3 uncovers a row of ports 20 when the suction draws the accumulated fuel over the plate 31, the movement of which is regulated by screws 37.
Patent GB-343572-A (GB)
Title: Improvements in or relating to laminated materials
IPC: H01B3/36
Filed: 1929-11-21
Abstract: Varnishes containing reactive phenolic resins such as phenol-formaldehyde resins and a plasticizer are used in making laminated materials.  Suitable plasticizers are esters having a boiling-point above 150 DEG  C. and preferably above 300 DEG  C. such as tricresylphosphate, triphenylphosphate, di-alkyl esters of phthalic and succinic acids such as dibutyl phthalate and esters of abietic acid such as ethyl and butyl abietate.  The plasticizer may be added to the resin varnish, or incorporated with the resin by heating or mixed with the materials used in the manufacture of the resin with subsequent addition of a solvent such as alcohol. Specifications 9559/11 and 325,281, [both in Class 140, Waterproof &c. fabrics] are referred to.ALSO:Phenol-formaldehyde condensation products for use in making laminated articles are made in the presence of a plasticizer which is non-volatile at the temperature of hardening of the resin. Suitable plasticizers are esters having a boiling point above 150 DEG  C. and preferably above 300 DEG  C. such as tricresylphosphate, triphenylphosphate, di-alkyl esters of phthalic and succinic acids such as dibutyl phthalate and esters of abietic acid such as ethyl and butyl abietate.  In an example, cresol is condensed with formaldehyde in the presence of tricresyl phosphate and a little ammonia, and the product is dehydrated by heating under reduced pressure.  Specifications 9559/11 and 325,281, [both in Class 140, Waterproof &c. fabrics], are referred to.
Patent GB-453927-A (GB)
Title: Improvements in or relating to materials for use in fluorescent screens for cathode ray tubes and the like
IPC: C09K11/08
Filed: 1934-12-12
Abstract: 453,927. Fluorescent screens. TELEFUNKEN GES. FUR DRAHTLOSE TELEGRAPHIE, 12, Hallesches Ufer, Berlin. Dec. 12, 1934, No. 35708. Void [Abridged as open to inspection under Sect. 91 of the Acts, June 13, 1935]: [Class 98 (i)] Fluorescent material for screens for cathode ray tubes and similar purposes comprises zinc sulphide, zinc cadmium sulphide, zinc manganese sulphide, or zinc cadmium manganese sulphide simultaneously activated by two or more different metals. The metals may be so chosen as to produce a white emission, for example, if the combined sulphides are activated with copper, which gives an emission maximum in the orange, and silver which gives one in the green, an approximation to white light is produced.
Patent GB-1185529-A (GB)
Title: Improvements in Distance Measuring Machines
Inventor: ABEL WALTER
IPC: G01B3/12
Filed: 1967-08-03
Abstract: 1,185,529. Bowden cable mechanisms. TRUMETER CO. Ltd. 9 July, 1968 [3 Aug., 1967], No. 35730/67. Heading B7E. [Also in Divisions E1 and G1] A combined measuring wheel and road marker (see also Division G1) comprises a wheel A supporting a frame and an aersol paint can B with a valve c. When a Bowden lever C is moved to position 1 the wire b<SP>5</SP> is pulled to pivot a lever B<SP>1</SP> and operate a valve c on the aerosol can. A lever a<SP>4</SP> operating a clutch to a counter and measuring device A<SP>2</SP> is not however moved due to lost motion in the wire a<SP>6</SP>. When the lever C moves to position 2 the clutch lever a<SP>4</SP> is disengaged thus rendering the device A<SP>2</SP> inoperative whilst increasing the clearance between the lever B<SP>1</SP> and a cam b<SP>2</SP>.
Patent GB-413209-A (GB)
Title: Anti-friction alloy
IPC: C22C9/00
Filed: 1933-12-22
Abstract: An antifriction alloy contains 55-80 per cent of copper, 10-30 per cent of lead, 3-10 per cent of tin, 1-5 per cent of nickel, 0,2-2 per cent of antimony, 0,1-1 per cent of cadmium and 0,5-1 per cent of zinc.  The alloy is made by melting the copper and nickel and adding the remaining metals.
Patent GB-1178284-A (GB)
Title: Improvements in or relating to the Preparation of 0-Chloro-1-Fluoro-Ethane
Inventor: HEDGE THOMAS ERNEST
IPC: C07C17/087
Filed: 1967-08-07
Abstract: 1,178,284. Fluorination catalysts. DIAMOND ALKALI CO. 7 Aug., 1967, No. 36184/ 67. Heading B1E. [Also in Division C2] A catalyst composition is prepared by placing finely-divided activated charcoal in an autoclave, removing all the air, distilling titanium tetrachloride onto the support, which is vigorously agitated, until the catalyst contains 11.7% titanium by weight of the support and the supported titanium tetrachloride is then changed to a tubular reactor under nitrogen and treated with anhydrous hydrogen fluoride vapour at 30‹C for 2 hours to give an anhydrous, charcoal-supported, titanium chloro-fluoro salt.