baber/WOPTO huggingface dataset:
Patent GB-501446-A (GB)
Title: Improvements in or relating to radio receivers
IPC: H03G5/20
Filed: 1937-07-26
Abstract: 501,446. Valve amplifying and filter circuits. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. July 26, 1937, No. 20670. Convention date, July 25, 1936. [Classes 40 (iii) and 40 (v)] A low-pass filter for providing automatic tone-control in a wireless receiver comprises inductance L (which may be the leakage inductance of the coupling transformer) and a thermionic capacity comprising an adjustable condenser 31 and variable-mu valve. The control voltage is derived from the automatic volume control or automatic selectivity control lead and the higher its value the higher the frequency of the cut-off point. Adjustment of the condenser controls the shape of the characteristic and may be used to give a strong peak near the cutoff point to compensate for the effect of high selectivity. In the arrangement shown in Fig. 3 the condenser and the control lead are connected to different grids of a heptode and the voltage of the control lead is controllable manually by a slider 77 as well as automatically. Possible values of the circuit components are given on the Specification. French Specification 768,306 is referred to.
Patent GB-1279558-A (GB)
Title: A support cushion, e.g. for invalids
IPC: B63C9/08
Filed: 1970-04-29
Abstract: 1279558 Cushions JOBST INSTITUTE Inc 29 April 1970 [29 April 1969] 20680/70 Heading A4M A cushion comprises a preshaped body 11 of foamed rubber or plastics loosely contained in an impervious envelope 14, the major part of the internal volume of the body 11 being taken up by a liquid, e.g. water. The cushion is made by enclosing the body 11 on the envelope 14 which is formed by sealing together upper and lower panels at a margin 17, evacuating all air from the envelope 14 and introducing the liquid through a stem 18 closable by a plug 19 so that the thickness of the cushion in this state is less than the unconstrained thickness of the body 11, preferably 70-80%. The liquid preferably occupies 75-85% of the volume of the body 11. The body includes a central recess 12 at its rear end and the envelope is provided with handles 21.
Patent GB-797091-A (GB)
Title: Door fastenings
Inventor: JEAVONS PHILIP SWINGEWOOD
IPC: E05B17/00
Filed: 1955-07-18
Abstract: 797,091. Door latches. WILMOT-BREEDEN, Ltd. June 19, 1956 [July 18,1955], No. 20692/55. Class 44 A door fastening comprises the combination of a spring-loaded bolt, a press-button for effecting withdrawal of the bolt and a spring-loaded catch piece for retaining the bolt in the withdrawn position, the catch piece being disposed to contact and be actuated by a fixed part as the door is closed to effect an automatic release of the bolt and serving also by the reaction of its spring loading on the fixed part to impart an initial opening movement to the door when the bolt is withdrawn. In the arrangement according to Fig. 1, a spring loaded latch bolt 11, which may be formed of nylon, is slidable within a housing at the rear of a door 7 to a retracted position by means of a spring-loaded press-button 14 protruding from a hollow handle 8 on the door. The housing is formed by an apertured spring steel sheet 9 secured to a sheet metal piece 10, the sheet 9 being formed with resilient tongues which grip a boss 8a on the rear side of the handle 8. Oppositely directed projections 14a on the inner end of the press button 14 co-operate with shoulders 11a in a recess in the bolt to withdraw the bolt. Preferably the press-button incorporates a barrel lock which upon insertion therein of a key, permits the press button to be rotated through 90 degrees so that one of the projections 14a will then abut the bolt 11 to prevent movement of the press button. A spring-loaded catch piece 17, which may be of nylon, co-operates with a step 11b on bolt 11 to retain the bolt in the retracted position and also to assist the opening movement of the door, the catch piece automatically freeing the bolt when the door is reclosed. In a modification. Fig. 4, in which a hollow handle 20 and a housing 23, 24 are secured to the door by screws 22, the push button includes a portion 25a which co-operates with a roller or other abutment on the bolt 27. The push button and the bolt are loaded by a common spring 28. The bolt is retained in the retracted position by a spring loaded catch piece 31 in a manner similar to that of the first embodiment.
Patent GB-1524467-A (GB)
Title: Fuel supply system
IPC: F02M1/16
Filed: 1977-04-27
Abstract: 1524467 Treating IC engine fuel; draining carburetters ROLLS-ROYCE MOTORS Ltd 27 April 1977 [20 May 1976] 20797/76 Headings F1B and F1H [Also in Division C5] A system for supply fuel to an internal combustion engine comprises a main fuel tank 1 from which fuel is passed to a device 16 in which the more volatile components are separated from the fuel, an auxiliary fuel tank 2 in which the separated more volatile components of the fuel are stored, a heat exchanger 13, separate from the device 16, in which heat is transferred from the hot products leaving the device 16 to the colder fuel passing to the device, and control means for enabling the carburetters 43 of the engine to be supplied with the more volatile components when it is cold and with fuel from the main tank when it is hot. The separating device 16 can comprise a thinwalled tube, in which the flow of gasoline is heated by passage of an electric current through the wall of the tube, which opens into an evaporation chamber. The heat exchanger 13 in which the more volatile components are condensed can comprise three concentric tubes with the gasoline from the main tank flowing through the annular space in counter-current to the more volatile components 35 which flow through the central tube and the bottoms components 36 which flow through the outer annular space to return to the main fuel tank when the engine is switched off, after having reached normal working temperature, the carburetter float chambers are drained to the main fuel tank.
Patent GB-683471-A (GB)
Title: Improvements in electron tubes
IPC: H01J21/14
Filed: 1949-08-10
Abstract: 683,471. Thermionic valves. RADIO CORPORATION OF AMERICA. Aug. 10, 1949 [Oct. 30, 1948], No. 20820/49. Class 39(i) [Also in Group XL(c)] A thermionic valve comprises a main anode 5, a main cathode 1 spaced from the main anode to define an electron path from the main cathode to the main anode, an auxiliary cathode or cathodes 7 disposed within the electron path and adapted to be heated by electron bombardment, and an auxiliary anode or anodes 8 disposed outside the electron path to collect electrons emitted by the auxiliary cathodes. The auxiliary cathodes are preferably directly connected to the main anode and may be in the form of ribbon-like filaments supported from the main anode. The auxiliary anodes may form part of a beam forming electrode which is preferably connected to the main cathode, Fig. 7, (not shown). The valve may include a control grid and screen grid and may be used in the deflection circuit of a cathode-ray tube, the auxiliary cathode preventing parasitic oscillations which might otherwise occur.
Patent GB-737765-A (GB)
Title: Improvements in or relating to anti-glare mirrors
IPC: B60R1/08
Filed: 1953-07-27
Abstract: 737,765. Mirrors. CAMERON, P. C., and SCHULZE, R. P. July 27, 1953 [Aug. 14, 1952], No. 20835/53. Class 97 (1). [Also in Groups XIV and XXXII] An anti-glare mirror comprises a partially reflective viewing surface and a luminous matt background visible through the reflective surface. As shown, a source of electric light 26 is mounted on a casing 24 behind a diffusion plate 32, a glass layer 30 and a front layer 28 having a partially silvered reflecting surface. In a modification the glass layer is placed in front of the reflecting surface layer. The electric light and diffusion plate may be replaced by a layer or coating of phosphorescent or other luminescent material.
Patent GB-498243-A (GB)
Title: Improvements in or relating to boxes
IPC: B65D5/52
Filed: 1937-07-28
Abstract: 498,243. Smokers' ash-trays. OVEREND, H. July 28, 1937, No. 20853. [Class 130] [Also in Group XVII] The top surface of the lid of a box is apertured at D to form a seating for an ash tray A<1>. After opening out flat to form a cruciform blank the tray is held inside the lid, up against and covering the aperture D, by means of inwardly-directed indentations C in the lid flanges. Recesses G constitute cigar rests. The corners of the aperture are incised to allow the edges thereof to give slightly, and the erected tray can also be seated in the aperture from inside the lid so that the two then form a two-tier tray. The box may be rectangular, oval, &c. and is made of metal, celluloid, cardboard, &c.
Patent GB-1369167-A (GB)
Title: Punching plates
IPC: B26F1/44
Filed: 1973-05-02
Abstract: 1369167 Punching-out tools FERD RUESCH MASCHINENFABRIK 2 May 1973 [5 May 1972] 20859/73 Heading B4B A tool for punching-out shapes from sheet material comprises a cutting tool 2 having a cutting edge 3 and mounted in a base-plate 1, the tool being surrounded by an elastic material 4 having flexible projections 7 extending above the level of the cutting edge so that, after cutting, the material is stripped from the cutting tool. The elastic material may be formed from a sheet of relatively non-extensible cloth coated with a rubber layer. The projections may be cylindrical lugs or in the form of rectangular ribs or flanges. The free ends of the projections may be formed with further pointed projections (8) Fig. 5 (not shown). Pressure is applied to the sheet material to effect cutting by a rotary drum or segment 6.
Patent GB-1388814-A (GB)
Title: Ink reservoirs for hand stamps
IPC: B41K1/24
Filed: 1973-05-02
Abstract: 1388814 Hand stamps WEBER MARKING SYSTEMS Inc 2 May 1973 [15 May 1972] 20861/73 Heading B6D An ink reservoir for a stencil printing rockable hand stamp includes an ink container 15 whose opening is closed by a perforate screen member 25 having side lugs 28, 27, the container being provided with a peripheral flange 19 which is flush with the arcuate face of the member 25 to provide a support face for an inking pad 33. The pad 33 is clipped on to the flange 19 by clamps 34, 35 abutted by clamping members 36, 37 which hold respective edges of a stencil when the latter is applied against the pad 33.
Patent GB-237853-A (GB)
Title: Improvements in means and apparatus for and/or in connection with navigation in the air, on water or for general locomotion
IPC: B64C11/00
Filed: 1924-09-04
Abstract: 237,853. Filleux, H. L. Aug. 1, 1924, [Convention date.]. Addition to 221,790. Screw propellers; propelling by water-jets and vacuum ahead.-Apparatus for propelling or lifting aircraft, or for propelling ships &c., comprises a rotary disc B with two or four circumferential curved, tapered scoops 1, 2, 3, 4, which take in fluid from above and compress it beneath the periphery of the plane or parachute-like member A. Steering can be effected by flaps K, L, M. N.
Patent GB-184462-A (GB)
IPC: D06M11/52
Filed: 1922-08-01
Abstract: 184,462. Moeller, F. Aug. 12, 1921, [Convention date]. Proofing; impregnating materials in long lengths.-Relates to processes in which cellulosic ard like materials are waterproofed by treatment with thionylchloride or sulphur chloride in the vaporized state, and consists in generating the vapours from the finaly divided reagent. The liquid may be sprayed in a chamber h by a sprayer i and thence carried to the treating chamber b, through which the material a such as paper is passed, by a pipe c. The circulating system contains a dryer e, apparatus f for separating sulphurous and hydrochloric acids, and a blower g. The material may alternatively be passed over a porous block saturated with the reagent; or the latter may be applied by porous rollers dipping into the liquid or by rollers sprinkled with it. According to the Specification as open to inspection under Sect. 91 (3) (a) sulphur dichloride may be used as the waterproofing agent. This subject-matter does not appear in the Specification as accepted.
Patent GB-1132277-A (GB)
Title: Polyesters incorporating photosensitive components
IPC: C08G63/19
Filed: 1966-05-12
Abstract: 1,132,277. Photo-sensitive films. E. I. DU PONT DE NEMOURS & CO. 12 May, 1966 [12 May, 1965], No. 21054/66. Heading B5B. [Also in Division C3] Photo-sensitive films are made from a linear polyester or polycarbonate into which there has been condensed a photo-sensitive agent which is a diaryl ketone containing esterforming functional groups. The basic polyester is preferably poly-(ethylene terephthalate) or poly - (1,4 - cyclohexylene - dimethylene terephthalate). After quenching to a temperature of 40 C. or below, the film is molecularly oriented by stretching and/or rolling in both 'the longitudinal and transverse directions, then heat-set at a temperature of 150 C. and finally subjected to electromagnetic radiation, preferably ultra-violet light of wavelength 2000- '4000 , to effect cross-linking.
Patent GB-1078259-A (GB)
Title: Antiknock compounds
IPC: C10L1/30
Filed: 1965-05-18
Abstract: An anti-knock composition comprises tetra-methyl lead, tetraethyl lead or physical or redistributed mixtures of the two alkyl leads containing 10-100% C2H5Br of the total weight of the scavenger, the remainder if any being C2H4Br2.  The theory ratio halogen: alkyl lead may be 0.5-2.5: 1.  The composition may be mixed with gasoline which can contain dye, metal deactivators, anti-icing agents, rust inhibitors, detergents, ignition control additives and methylcyclopentadienyl-manganese-tricarbonyl.ALSO:An antiknock composition comprises tetramethyl lead, tetraethyl lead or physical or redistributed mixtures of the two alkyl leads containing 10-100% C2H5Br of the total weight of the scavenger, the remainder if any being C2H4Br2.  The theory ratio halogen:alkyl lead may be 0.5-2.5:1. The composition may be mixed with gasoline which can contain dye, metal deactivators, anti-icing agents, rust inhibitors, detergents, ignition control additives and methylcyclopentadienyl-manganesetricarbonyl.
Patent GB-853368-A (GB)
Title: Alkoxydisiloxanes
IPC: C07F7/08
Filed: 1959-06-19
Abstract: The invention comprises disiloxanes having the general formula: <FORM:0853368/IV(a)/1> where R is an alkyl group of 2 to 12 carbon atoms and R1 is an alkyl group of 3 to 13 carbon atoms, each R and each R1 being the same or different.  They are prepared by reacting one mole of RSiCl3 with two moles of R 1OH, and reacting two moles of the resulting RSi Cl(OR 1)2 with one mole of water in the presence of an acid acceptor such as a -picoline or pyridine.  The following disiloxanes are specified. 1,3-dipentyl-1, 1, 3, 3-tetra-(2-ethyl butoxy)- and the 1, 3-diethyl-1, 1, 3, 3 tetra-(2 ethylhexoxy)-,-(2 ethyl-butoxy)-, -(2,2 dimethylpentoxy)-and-(2-octoxy) -disiloxanes. Also mentioned for comparison are 1, 3 dimethyl-1, 1, 3, 3-tetra (2, 2 dimethylpentoxy)-and tetra- (2 octoxy)-and 1, 1, 3, 3-tetramethyl-1, 3-di (1-decoxy)-disiloxanes, and hexa (2, 2-dimethyl butoxy)- and hexa (2-octoxy) disiloxanes. Uses: Hydraulic fluids and lubricants.
Patent GB-1442751-A (GB)
Title: Cigarette making machines
IPC: A24C5/00
Filed: 1972-05-05
Abstract: 1442751 Cigarette making machines MOLINS Ltd 6 Aug 1973 [5 May 1972] 21184/72 Heading A2C  A cigarette making machine is provided with a sound proof enclosure having at least one air inlet and at least one outlet a suction device being provided within the enclosure to cause air circulation. As shown the machine is located in an L-shaped enclosure. Air enters through an opening 10 located above a filter attachment device in one limb of the L and more air enters through an inlet 12 in the other limb. A fan 16 draws air from the machine bed and thrusts to an outlet 8. Air is also driven to the outlet 8 by a fan 26 which also operates the various suction devices of the filter attachment device. The air to be drawn from or expelled into the interior of the factory or the outside atmosphere.
Patent GB-583453-A (GB)
Title: Improvements in or relating to feed, measuring or draw through roller components for machines for operating upon sheet material
IPC: B65H5/06
Filed: 1944-10-31
Abstract: 583,453. Printing-machines. TIMSONS, Ltd., TIMSON, E. A., and DICKINSON, C. H. Oct. 31, 1944, No. 21242. [Class 100 (ii)] [Also in Group VIII] A throw-off mechanism applicable to printing- machines or machines for measuring continuous lengths of material is constructed with a roller 1 mounted in fixed bearings and a coacting roller 10 mounted in eccentric bushes 14, 15 which have a yielding connection with a lever 12, by means of which the rollers 1, 10 may be moved apart, the yielding connection permitting the rollers to deal with materials of different thicknesses. The lever 12 is mounted on an extension 11a of the spindle 11 of the roller 10, and a tension spring 17 is connected by a pin 21 to the lever 12 and to a pin or screw 22 connected to the bushing 14. A similar spring 18 is arranged between the spindle 11 and bushing 15. The lever 12 is operated by a handle 16 and is fitted with a locking bolt 33. To throw the rollers 1, 10 into contact the lever 12 is moved clockwise from the position shown in Fig. 3 to an extent. controlled by a quadrant slot 30, and the rotation of the bushes 14, 15 raises the roller 10 into contact with roller 1. The movement of the bushes is controlled by engagement of stop pins 25, 26 screwed to the bushes with adjustable pins 27 carried by the lever 12 and by a part moving with the shaft 11. The springs 17 are passed around grooved flanges on the bushes 14, 15, and a flange 12a on lever 12. and flange 19a serve to complete housings for the springs.
Patent GB-1185594-A (GB)
Title: Moisture-Resistant Plaster of Paris Bandages Containing Water-Swellable Gums
Inventor: SMITH DAVID F
IPC: A61F13/04
Filed: 1968-05-06
Abstract: 1,185,594. Plaster of paris bandages. CONTINENTAL CHEMICAL CO. Inc. 6 May, 1968, No. 21288/68. Heading A5R. A plaster of Paris bandage comprises a porous, flexible backing material impregnated with powdered plaster of Paris having admixed therewith a small amount of water swellable hydroxyethyl ethyl cellulose, preferably with a degree of substitution of hydroxyethyl and ethyl groups in the range 0.5 and 1 and a viscosity between 50 and 4000 c.p.s. in 2 weight per cent aqueous solution at 20‹C. According to an example 18.5 parts by weight of steam cooked aqueous starch solution containing 1.3 parts starch, 29.4 parts 29-30% aqueous ammonia and 6.06 parts of water are thoroughly mixed together. These are added to the mixture: (1) 0.033 part sodium alkyl naphthyl sulphonate (or sodium lauryl sulphate); (2) a solution obtained by wetting 0.123 parts acid casein (or borate) in 2.94 parts water and dissolving up the wet casein by addition of 1.54 parts 29-30% aqua ammonia; (3) 2 parts of potassium or zinc sulphate set accelerator ground to 100 mesh U.S. standard screen size or finer; and (4) a mixture of 0.25 parts hydroxyethyl ethyl cellulose (degree of substitution of hydroxyethyl 0.8 and of ethyl 0.9) with 100 parts plaster of Paris. The resulting slurry is coated upon 32 x 28 mesh surgical gauze at a rate to yield a dry bandage weighing 230-240 grams per 5 sq. ft. and the coated gauze is dried in air at 250‹F to the point (but not substantially beyond) where a roll of the dried product after standing protected from moisture for a few hours does not show any gritty feel when wet and formed into a cast. The dried web is cut and rolled into rolls 4 inch wide by 5 yards long. According to a further example, a solution of 11.3 g. of the hydroxyethyl ethyl cellulose in 805 g. water is added with stirring to 1879 g. of methanol (or ethanol, propanol, isopropanol or acetone) and 1.5 g. sodium alkyl naphthyl sulphonate. There are then added 45.4 g. zein, 45.4 g. powdered potassium sulphate and 10.6 1bs. plaster of Paris. The resulting slurry is then coated on gauze and dried as in the previous example. Binders mentioned: methyl cellulose, hydroxypropyl methyl cellulose, hydroxyethyl ethyl cellulose, polyvinyl acetate emulsion solids, dextrin and cooked starch.
Patent GB-331114-A (GB)
Title: Improvements in or relating to straining or filtering apparatus
IPC: B01D35/00
Filed: 1929-07-11
Abstract: 331,114. Auto-Klean Strainers, Ltd., and Beldam, W. R. July 11, 1929. Vibrations, utilizing. - Strainers of the kind described in Specifications 145,339, 215,098, and 223,627, [all in Class 46, Filtering &c.], having slots and apertures kept clear by means of blades, which project into and move relatively to the slots, are mounted on a machine in such a manner that a moving part of the machine actuates the moving part of the straining apparatus. Figs. 1 and 2 show apparatus fitted on a motor vehicle for the treatment of liquid fuel or lubricating oil. The strainer is arranged as described in Specification 215,098, and comprises a pile of discs fixed on a central shaft, the spaces between the discs being kept clear by blades on a parallel shaft fixed to the casing. The casing 1 is mounted on the engine 2, which is carried by a sub-frame 3. A spindle 15, which carries the strainer discs and extends outside the casing 1, is rotated intermittently by means of a one-way clutch, link 10, lever 4, and a link 7 connected to the main frame 8 of the vehicle. Relative motion between the frames 3, 8 thus serves to keep the strainer clear. The clutch shown is formed by a helical spring 16 surrounding the spindle 15 and having one end attached to an arm 12, which is bent so as to journal on the spindle and is connected by a ball-and-socket joint to the link 10. Another arrangement is described in which the arm 12 is operated by links and a lever from the brake pedal lever.
Patent GB-479357-A (GB)
Title: Improvements in or relating to machine guns or the like
IPC: F41A33/00
Filed: 1936-08-01
Abstract: 479,357. Automatic guns. THORNTON, E. E. Aug. 1, 1936, No. 21377. [Class 92 (ii)] Relates to an attachment for gas-operated guns of the kind in which the gas piston 8 is adapted to be actuated by an external fluidpressure operated piston 7 for the purpose of working the gun without firing ammunition. According to the. invention, the piston 7 is slidably mounted in a cylinder 2 having an inlet valve 16 and an outlet valve 14, the piston controlling one of the valves which in turn controls the other valve whereby the opening or closing of one valve in response to the action of the piston is accompanied by the opposite movement of the other valve. In the construction shown, the attachment comprises the power cylinder 2 connected by sleeves 3, 4 to a supporting tube 1 attached to the muzzle 6 of the gun barrel. The forward end of the cylinder 2 carries a pressure inlet valve 16 and an outlet valve 14. In the position shown, an extension 20 on the piston 7 closes the outlet valve 14 which presses open the inlet valve 16. The fluid pressure forces the piston 7 rearwards, its rod 12 actuating the gas piston 8 to work the gun. When the piston reaches the end of its stroke, it engages the stem 15 of the valve 14 to open same, the inlet valve then closing under the action of its spring 24. The main spring of the gun then returns the piston 7 to the position shown, causing the valve 14 to close and the valve 16 to open, thereby repeating the action on the gun. The speed of action is controlled by a screw 19. The valve 14 may be actuated by hand by means of an extension 21. It is stated that the device may be double-acting.
Patent GB-403594-A (GB)
Title: Improvements in or relating to the rims of metal plate walling such as that of wagonbodies, tanks and the like
IPC: B61D17/04
Filed: 1932-07-29
Abstract: 403,594. Beaded edges of sheet metal. HUDSON, W. S., and HUDSON, E., 38A, Bond Street, Leeds. July 29, 1933, No. 21398. [Class 83 (ii).] A hollow beaded rim for wagon bodies, tanks, &c. is stiffened by an extension A, B providing a half-turn overlap with frictional surface contact. The overlap may be welded.