baber/WOPTO huggingface dataset:
Patent GB-515013-A (GB)
Title: Improvements in, and connected with, electric fires
IPC: F24C7/00
Filed: 1938-05-20
Abstract: 515,013. Imitation solid-fuel fires. BERKELEY & YOUNG, Ltd., and GRUNDON, G. L. A, May 20, 1938, No. 15046. [Class 126] [Also in Group XIII] An electric fire having means for simulating a coal fire has a motor driven fan for passing air over the electric heating elements. A fan a driven by a motor b passes air through a duct d containing heating elements c at the rear of an imitation coal fire f. A hollow sheet metal member g separates and insulates the imitation coal from the elements c. The air leaves the duct d through a grille i. Mounted in the lower part are flicker units x, driven by air currents from lamps l. Each flicker fan x may have one of its blades offset so as to abut against a fixed projection during each rotation to reverse the rotation. An alternative outlet from the duct is provided by opening a hinged lid k, or the heated air may be blown through the imitation fuel f. Air can be circulated by the fan without the heating elements being switched in.
Patent GB-786326-A (GB)
Title: Improvements in and relating to folding beds
IPC: A47C19/12
Filed: 1956-05-15
Abstract: 786,326. Folding bedsteads; bedsettees MARCHOT, H. May 15, 1956 [May 17 1955], No. 15055/56. Class 52(2) In a folding metal bed whose head 3 and foot 4 are articulated on the mattress frame by means of struts 1, 2 allowing them to be folded under the mattress the struts articulated at 8, 9 to the bed uprights 10 have eyelets 11, 12 at their free ends which engage lugs 13, 14 on the side members 6 to be pivotable thereabout. When the crosspiece 7 of the spring mattress 5 is in place it forms a stop to prevent the head or foot being moved forward to disengage the eyelets from the lugs. In a half-folded position (Fig. 2) the bed forms a divan, the upright 10 and the side members 6 of the bed having interengaging slots 16, 16<SP>1</SP>. The struts may have aligned holes at their intersection to be engaged by a split pin 18. In the normal position of the bed stability is strengthened by the engagement of a slot 17 in strut 1 with lug 14.
Patent GB-185481-A (GB)
Title: Improvements relating to cases or enclosures for instruments and apparatus used in coal mines and so forth
IPC: E21F17/00
Filed: 1921-05-31
Abstract: 185,481. Amberton, R. May 31, 1921. Pressure-relieving devices for fluids; safety valves.- In a casing or enclosure for instruments or apparatus subject to excessive internal pressure such as switch casings and cases for instruments and apparatus used in coal mines, the body and cover of the casing are provided with broad machined flanges a, b, which are normally held in contact by relief bolts d constructed to allow a limited separation of the cover from the body upon the internal pressure becoming excessive, the escaping gases being cooled by the broad flanges. The relief bolts d are provided with boxes f enclosing springs k which press on the bolt-heads c, the boxes being positively limited in their upward movements by washers g to limit the separation of the casing flanges b, and the springs ensuring immediate closing of the flanges when the pressure returns to normal. A wire ring m is sprung into a groove formed in the shank of the bolt after the box f, washer g and spring k have been assembled thereon. A centrally-arranged relief bolt may be fitted to the covers of small instruments, while two bolts on opposite sides of an oval plate may serve on other cases. Four or more bolts are required for rectangular covers of switch casings &c.
Patent GB-812386-A (GB)
Title: Footwear with strengthened or reinforced toe portions
IPC: A43B23/08
Filed: 1956-05-15
Abstract: 812,386. Boots &c. C. I. C. ENGINEERING Ltd., COTTIER, R., and DENTON, G. H. May 2, 1957 [May 15, 1956], No. 15072/56. Class 17(2) A reinforced toe for boots for miners, quarrymen or other industrial workers comprises a metal or similar toe cap 7 having inturned flanges 6 located between an insole 8 and a leather toe cap 9 and a firm sole 3, such as hard moulded rubber having a compressible zone 1 within the area surrounded by the flanges 6. The zone 1 is made compressible by arcuate grooves 10 following the contour of the sole edge moulded into the tread face and it allows the toe of the boot to maintain its depth when the toe cap is compressed. In a modification a single deep and narrow groove is used leaving only a thin bridging portion between the zone 1 and the edge of the sole. As shown the sole is moulded in situ to the boot but other constructions are described where soles are stuck on with or without the use of a welt.
Patent GB-829446-A (GB)
Title: Improvements in or relating to tools for inserting wire hook fasteners in transmission belts
Inventor: TEBB BERNARD
IPC: F16G3/00
Filed: 1957-05-14
Abstract: 829,446. Belt-fastening appliances. MASTABAR MINING EQUIPMENT CO. Ltd. May 7, 1958 [May 14, 1957], No. 15210/57. Class 80 (1). In a belt-fastening appliance in which a row of hooks 22 are held in a comb 10 by a pin 30 whilst they are inserted into a belt end 28 by a pair of jaws which are moved along the comb, the pin 30 is provided at the handle end 34 with a wedge 36 co-operating with the edge of the opening 32 of the comb and the comb is provided with a wedge 38 co-operating with the forward end of the pin so that after the fasteners at each edge of the belt have been inserted the belt end can be drawn back up to the comb whilst the remaining fasteners are inserted by forward movement of the pin.
Patent GB-743844-A (GB)
Title: Improvements in or relating to electric circuit arrangements for operating low pressure electric discharge lamps
IPC: H05B41/392
Filed: 1952-06-17
Abstract: 743,844. Control systems for space discharge apparatus. GENERAL ELECTRIC CO., Ltd., and WILLIAMS, C. E. June 10, 1953 [June 17, 1952], No. 15242/52. Class 38 (4). In an electric circuit including one or more low-pressure electric discharge lamps 1 connected to an A.C. supply in series with two gasfilled grid - controlled thermionic valves 2 arranged in reverse parallel to permit current flow through the lamp(s) during each half-cycle of the supply voltage, and means for varying the period in each cycle of conduction of the valves to vary the lamp(s) brightness, an oscillatory circuit is provided in a series circuit connected between the input terminals and including the valves but not the lamp(s), the oscillatory circuit being set into oscillation as each valve starts to conduct so as to generate a voltage to facilitate lamp starting by step-up transformer action of a secondary inductance which is magnetically coupled to a primary inductance in the oscillatory circuit. As shown, there are a number of oscillatory circuits each comprising a capacitor C6, shunted across its respective lamp 1 and the major part of the lamp's ballast inductance L1, and the minor part of said inductance, the entire inductance L1 and minor parts thereof forming the secondary and primary inductances respectively. In another embodiment (not shown), a single oscillatory circuit is formed by a power factor correction capacitor C5 and the minor part of a current limiting impedance L2. A respective oscillation damping resistor R4 is serially connected with each capacitors C6. The invention is applicable to hot or cold cathode lamps, and in another embodiment each lamp and ballast inductance may be replaced by the primary winding of a step-up transformer across the secondary winding of which are connected one or more series connected lamps. Conduction of the valves is controlled by a pulse-forming transformer T2 whose secondary windings 5, 6 are connected between the grids and cathodes of the respective valves and whose primary winding 7 is connected between the centre tapping of an autotransformer T1, and, through a capacitor C4, the junction of a phase-shifting variable resistor R2 and a capacitor C1 shunted across the transformer T1. A resistor R3 is connected in parallel with the lamp load to maintain the voltage across the valves when the lamps are extinguished, and premature firing of one valve caused by extinction of the other is prevented by a respective capacitor C7 connected between the grid and cathode of each valve. Where a three-phase supply having a neutral conductor is available, a simplified phase-shifting circuit, Fig. 3 (not shown), may be used. Specifications 436,469 and 743,899 are referred to.
Patent GB-1056402-A (GB)
Title: Connecting-and-testing plug-in unit for wafers with printed circuits
IPC: H01R12/71
Filed: 1965-04-09
Abstract: 1,056,402. Edge connectors for printed circuit boards. INTERNATIONAL STANDARD ELECTRIC CORPORATION. April 9, 1965 [April 10, 19641, No. 15245/65. Heading H2E. A plug strip 5 is secured to the edge of a printed circuit board at right angles to the plane of the board, the contacts of the strip being electrically connected, e.g. by soldering, to the printed circuit conductors: The strip is held in position by angle brackets which may pass through the board (Fig. 5, not shown) or be entirely on one side of the board. These brackets are held by rivets 6 and 7. The strip may have a polarizing plate 8 secured to it, and may be used for testing purposes.
Patent GB-834003-A (GB)
Title: Improvements in pressure relief valves
IPC: A47J27/09
Filed: 1956-05-16
Abstract: 834,003. Pressure relief valves. VISCHER, A. May 16, 1956 [June 2, 1955], No. 15290/56. Class 135. A pressure relief valve for pressure cookers and other thin-walled pressurized vessels comprises a valve member 20, Fig. 1, mounted on the outside of the vessel so as to co-operate with a seat formed about an aperture 11a formed in a wall 11 of the vessel, and means for resiliently urging the valve member against the seat, such means engaging the opposite side of the wall to the seat throughout an area which is directly opposite the seat defining surface. The wall 11 may be the cover of the vessel. The valve member 20 is of cap-like form and has an external flange 26 grooved to receive a resilient sealing ring 28. The means acting resiliently on the valve member comprise a sleeve 13 and a spring 25. The sleeve 13 which has an upturned flange 15 engaging the under side of the cover 11 projects through the aperture 11a into the valve member. The spring 25 is arranged between an inwardly projecting flange 16 on the sleeve and the head of a screw 22 threaded into a boss 19 depending from the top of the valve member. Apertures 30 in the sleeve 13 facilitate the rapid release of fluid. In a modification (Fig. 3), the valve member 113 has a truncated conical extension 113a passing through the seat aperture 112 and is urged to its seat by a truncated conical spring 115 engaging the under side of the cover 111 and a flange 121 on the extension 113a. The flange 121 has an inclined slot to facilitate assembly of the spring 115 and also has grooves 123 to permit fluid to pass should the end of the bore 124 become obstructed by a large item of food. A threaded bore 126 open to the bore 124 may be provided to facilitate the attachment of a pressure-indicating device 116.
Patent GB-733579-A (GB)
Title: Improvements in or relating to rotary pumps
Inventor: THOREN THEODORE ROOSEVELT
IPC: F04C2/44
Filed: 1953-06-03
Abstract: 733,579. Rotary pumps. THOMPSON PRODUCTS, Inc. June 3, 1953, No. 15321/53. Class 110 (2). A rotary pump of the flexible vane type comprises a tapered cam-shaped pumping chamber 14 of fixed dimensions disposed between plates 34, 36 of cartridge brass. The sealing means comprises a stationary cup 30 positioned against a shoulder 11c of the casing, a flanged ring 31 of resilient material, carried by the cup, and a spring-loaded packing 33 urged against. a bushing 29. A rubber rotor 17 is moulded or cemented on the bushing 29 which in turn constitutes a press fit on the rotor shaft 28. The end of the bushing 29 may be screwthreaded to facilitate withdrawal of the shaft 28 which is journalled in a ball bearing assembly 27. The liquid is discharged into the turbulent zone 20a of a standpipe 20, thence over a baffle 22, provided for de-aerating purposes, to a quiescent zone 20b having a discharge port 21. The pump is provided with a drain plug 24 and recirculating passages 36a, , 37, Fig. 4 (not shown). The body portion 11 and the cover 12 of the pump are cast from aluminium and interconnected by a bolted flange connection.
Patent GB-1459691-A (GB)
Title: Isocyanates
IPC: C07C265/12
Filed: 1974-04-08
Abstract: 1459691 Isocyanate purification IMPERIAL CHEMICAL INDUSTRIES Ltd 10 March 1975 [8 April 1974] 15455/74 Heading C2C The hydrolysable chlorine content of organic isocyanates is reduced by heating them with sulphuric acid or an ester thereof. The isocyanate may be distilled or part distilled after the above treatment. Specified isocyanates are phenylisocyanate, tolylene diisocyanate, diphenylmethane diisocyanate, hexamethylene diisocyanate and methylene bridged polyphenyl polyisocyanates. The sulphuric acid or ester thereof is preferably used in an amount of up to three molar proportions for each atomic proportion of hydrolysable chlorine. The esters of sulphuric acid may be full esters, half esters or ester salts.
Patent GB-906617-A (GB)
Title: Process for highly purifying liquid or gaseous organic or inorganic silicon compounds
IPC: C01B33/08
Filed: 1960-05-02
Abstract: Silicon compounds, containing 10-3% to 106% by weight of impurities are purified by contacting them in the liquid state with a carboxylic acid amide and/or a dithiocarbamate and/or a salt of ethylene diamine tetracetic acid, at a temperature below the carbonization point of the purifying agent, and then not more than 90% of the silicon compound is isolated from the mixture, for example by distillation or by passing a carrier gas, for example nitrogen, hydrogen, carbon monoxide, inert gases, and gases which are reacted at a later stage with the purified compound, through the mixture.  The mixture may be agitated or refluxed at 0-50 atmospheres gauge.  The purifying agent may be present in an amount of 0,1% by weight, or less, although more may be present. Suitable purifying agents include thioglycolic acid (b -naphthyl)-amide, sodium and ammonium pyrrolidine dithiocarbamate. For dealing with very impure silicon compounds, inert porous contact materials, for example hydrogen-containing silica, brown silicon, highly active graphite, or porous quartz glass or quartz ware, may also be present.  The reaction vessel may be made of quartz glass or ware, glass, noble metals or alloys, or synthetic resins, for example, polymethacrylates, polytetrafluorethylene, polyvinyl chloride or polytrifluorethylene.  In examples, silicon tetrachloride and trichlorsilane were purified.ALSO:Organic silicon compounds (only monomethyl trichlorosilane and monomethyl monochlorsilane are exemplified), containing 10-3%-10-6% by weight of impurities, are purified by contacting them in the liquid state with a carboxylic acid amide and/or a dithiocarbamate and/or a salt of ethylene diamine tetracetic acid, at a temperature below the carbonization point of the purifying agent, and then not more than 90% of the silicon compound is isolated from the mixture, for example by distillation or by passing a carrier gas, such as hydrogen, nitrogen carbon monoxide, inert gases, and gases which are reacted with the silicon compound at a later stage, through the mixture.  The mixture may be agitated or refluxed at 0-50 atmospheres guage. The purifying agent may be present in amounts of less or more than 0,1% by weight.  Suitable agents include thioglycolic acid (b -naphthyl)-amide, sodium and ammonium pyrrolidine dithiocarbamate.  For dealing with very impure silicon compounds inert porous contact materials, such as hydrogen-containing silica, brown silicon, highly active graphite or porous quartz glass or ware may also be present.  The reaction vessel may be made of quartz glass or ware, glass, noble metals and alloys, or synthetic resins, for example polymethacrylates, polyvinyl chloride, polytetrafluorethylene or polytrifluorethylene.
Patent GB-674080-A (GB)
Title: Improvements in or relating to the polymerization of vinylidene compounds
IPC: C08F283/00
Filed: 1949-06-13
Abstract: Vinyl chloride is polymerized in an aqueous medium containing only vinyl chloride, from 0.3 to 12 per cent by weight based on the vinyl chloride of a water-soluble urea-aldehyde condensation product, a peroxygen compound and, if desired, small quantities of a buffer and/or stabilizing agent.  The peroxygen compound may be o1,o-dichlorobenzoyl peroxide, dicaproyl peroxide, dibenzoyl peroxide, hydrogen peroxide, potassium, sodium or ammonium persulphate, or sodium perborate, percarbonate or perphosphate. The buffer may be sodium bicarbonate, sodium metasilicate, lead acetate or ammonia.  The Specification as open to inspection under Sect. 91, relates also to the preparation of polymers and copolymers of vinyl chloride, vinylidene chloride, vinyl bromide, vinyl fluoride, vinylidene bromide, styrene, p-chlorostyrene, 3,5-dichlorostyrene, p-methoxy styrene, acrylonitrile, methacrylonitrile, alphachloroacrylonitrile, methyl acrylate, ethyl acrylate, methylmethacrylate, butyl ethacrylate, methyl alpha - cyanoacrylate, ethyl alpha - chloroacrylate, methacrylamide, vinyl methyl ketone, vinyl pyridine, vinyl carbazole, vinyl methylether, vinyl acetate, benzoate, propionate and butyrate; isobutylene, ethylene, butadiene-1,3, isoprene, chloroprene, 3-cyano-butadiene-1,3, myrcene, vinyl ethynyl diethyl carbinol, di-ethyl maleate, diethyl fumarate, and maleic acid and anhydride.  This subject-matter does not appear in the Specification as accepted.
Patent GB-355332-A (GB)
Title: Improvements in or relating to the manufacture of shoes
IPC: A43B13/38
Filed: 1930-05-22
Abstract: 355,332. Boots &c. UNITED SHOE MACHINERY CORPORATION, 140, Federal Street, Boston, U.S.A.-(Assignees of Goddu, G. ; Winchester, Massachusetts, U.S.A.) May 22, 1930, No. 15718. Convention date, Aug. 15, 1929. [Class 17 (ii).] Connecting uppers to insoles and soles.-The margin of the upper of a shoe is lasted with an inner portion in upstanding relation to the sole, Fig. 6, and a part, at least, of this portion of the upper is removed after adhesive, e.g. water dispersed rubber cement or hydroxylin, which connects the upper and sole has set. The lasting pressure during lasting is so directed as to urge the flow of excess adhesive on to the upturned portion of the upper without removing it from the surfaces to be joined and that portion at least of the upturned part on to which excess adhesive has flown is removed during trimming. The lasting of the forepart and waist of the shoe may be performed in a machine of the kind described in Specification 283,978, [Class 17 (i), Boots and shoes, Apparatus for making &c.], and the toe portion may be lasted by a bed lasting machine and held in position by a toe binder, preferably of the type described in Specification 338,558, [Class 17 (ii), Boots and shoes, Construction of]. The edge of the upper at the forepart is left upstanding preferably against a lip channelled from the insole and is secured by staples 56, Fig. 7, or other fastenings clinched on the inside while the cement is setting. The insole, Fig. 1, may have a two-ply lip 24, 30 around the forepart, the lips being unconnected at the toe end. The waist may be plain or have a single ply lip 26 at each side to receive a shank stiffener. The edge of the insole may be recessed, at 22, Figs. 6 and 8, to an amount equal to the thickness of the upper and lining, &c., so that the upper after setting of the adhesive and removal of the toe binder may be trimmed flush with the outer face of the insole to remove the upstanding portion and the lasting staples. The waist is preferably trimmed in a plane outside the staples to leave these in position. An outersole is secured by adhesive and also additionally, if desired, by through stitching. Specifications 294,640, [Class 17 (ii), Boots and shoes, Construction of], and 354,787 also are referred to.
Patent GB-783609-A (GB)
Title: Jet propelled aircraft
Inventor: ASHWOOD PETER FREDERICK
IPC: B64C9/38
Filed: 1954-05-27
Abstract: 783,609. Jet-propulsion plant. POWER JETS (RESEARCH & DEVELOPMENT), Ltd. May 27, 1955 [May 27, 1954], No. 15758/54. Class 110 (3). A nozzle of low discharge co-efficient for a propulsive jet of an aircraft is provided with means for applying a controlling gas stream to act on the propulsive jet upstream of the nozzle orifice to modify the discharge co-efficient so as to increase the mass flow. The drawings show nozzles 1 provided with controlling air jets supplied by pipes 3 having control valves 4. In Fig. 3, the flow to the outside of an inner tapered tube 8 is cut off or reduced by the controlling stream. With a gas turbine engine the controlling stream is supplied from the engine compressor or an auxiliary boosting compressor, and it may be controlled automatically in accordance with fuel supply to a reheat burner or with the movement of the throttle for the main fuel supply. Specifications 659,793 and 659,800 are referred to.
Patent GB-318187-A (GB)
Title: Improved cut-off for cigarette making machines
IPC: B24B3/44
Filed: 1928-05-30
Abstract: 318,187. Skidmore, T. E., and Wills, G. M. May 30, 1928. Cigarette-making machines. - In a cutting-mechanism for continuousrod machines, of the type comprising a cutter shaft 10 inclined to the cigarette rod 11 and carrying a knife 16 set at an angle to the shaft in order to move with the rod when cutting, an oscillating movement is imparted to a guide tube 23, one end of which serves as a ledger plate, or to a knife sharpener 22, by an arm 18 rotatable upon an axle 17 secured at an angle to the cutter shaft 10. The arm 18 is coupled through a spherical bearing 19 with a rod 20 connected at its lower end through a spherical bearing 21 with a fixed part of the machine. The guide tube 23 is mounted to reciprocate in the direction of the cigarette rod, and is coupled to the rod 20 through a link 25 and spherical bearings 24, 26. The guide tube may be mounted on flat springs 27, 28 and may carry a rotatable grinding wheel. The cutter shaft 10 is driven from a vertical shaft 4 through a sliding clutch 3, gear wheels 5, 6, and bevel gears 8, 9, and a sleeve 12 provides a bearing for a sleeve-like extension 13 of a disc 14 secured to tha shaft 10.