baber/WOPTO huggingface dataset:
Patent GB-794790-A (GB)
Title: Work-feeding mechanism for sewing machines
IPC: D05B27/12
Filed: 1956-07-02
Abstract: 794,790. Sewing machines. SINGER MANUFACTURING CO. July 2,1956 [July 27, 1955], No. 20359/56. Class 112 [Also in Group XXIV] Feeding by wheels. The feeding wheel 17 is belt-driven from a pulley 47 of variable diameter (see Group XXIV). The pulley is arranged on a vertical shaft 44 coupled by a driving belt 42 to a shaft 36 geared to a lower feeding wheel 16. The shaft 36 includes a one-way clutch 37 oscillated by an actuating arm 38 connected to a pitman 39 embracing an eccentric on the driving shaft 25. Specification 679,456 is referred to.
Patent GB-424565-A (GB)
Title: Improvements in or relating to automatic guns
IPC: F41A7/02
Filed: 1933-07-19
Abstract: 424,565. Automatic guns. LAHTI, A. J., 1, Kausakoulukatu, Jyvõskylõ, Finland. July 19, 1933, No. 20381. [Classes 92 (ii) and 119] Relates to machine guns automatic pistols and other short-recoil firearms of the kind in which the breech-block 6 is slidably displaced within the barrelextension 5 by a breech-block carrier 2, the movement of which relatively to the breech-block actuates a locking-lever 3 pivoted to the breech-block. According to the invention, the release of the locking-lever from an abutment 5<a> on the barrel-extension is effected by a stirrup member 4 the depending arms of which engage inclines 2<c> in side grooves x in the carrier 2 when the latter moves rearwards in relation to the breech-block. After firing, the carrier is in the example shown, moved rearwards by an accelerating-lever 14 which bears against the recoiling barrel 7. After the breechblock is unlocked as described above, the breech-block and carrier move rearwards together against the action of the closing spring 11, until the carrier is retained by the sear 10. On pulling the trigger 12, the carrier is released and, when the breech-block has loaded a fresh cartridge, the carrier moves relatively to the block to lift the locking-lever 3 by means of an incline 2<g> and to fire the cartridge by means of the firing pin 13.
Patent GB-971958-A (GB)
Title: Foam-backed carpets and method for their production
IPC: D06M15/227
Filed: 1963-05-22
Abstract: 971,958. Laminates and laminating. DOW CHEMICAL CO. May 22, 1963 [May 31, 1962], No. 20389/63. Drawings to Specification. Heading B5N. Foam-backed carpets comprise a web of carpeting to the back of which a foamed, resilient, rubber-like layer is bonded by means of an intermediate layer comprising a thermoplastic polymer of an olefin having from 2 to 4 carbon atoms, e.g. low- or high-density polyethylenes, or copolymers of ethylene and other olefines such as propylene and butylene with each other or with other monomers such as ethyl acrylate, methyl acrylate, methyl methacrylate and vinyl acetate. The latter type of copolymer should have at least 50% by weight of olefin monomer in the polymer molecule a preferred copolymer being of 88% ethylene and 12% ethyl acrylate. The carpet web need only be pile on base or tufting material, the olefin layer serving to bind the pile and to size or stiffen as well as to bond the web to the backing. The tufting material may be burlap, hemp, cotton or synthetics such as nylon or polyolefins and may additionally be sized with starch, latex or a polyolefin; the pile may be natural or synthetic yarn, e.g. wool, cotton, rayon, nylon, and acrylic or propylene fibres. The foamed layer may be e.g. of natural or synthetic rubber such as styrene-butadiene, or of polyurethanes, polyethylene or polyvinyl chloride and need not be the same width as the carpet web. The carpet web and foam layer may be laminated by passing them through rolls whilst extruding the polyolefin layer between them (Fig. 3, not shown) or on to either or both of them before they enter the nip of the rolls; alternatively, the polymer may be scattered in granular form on to the carpet back and fused into a molten layer by infra-red lamps. The rolls apply pressure to regulate the thickness and penetration of the molten layer and may also heat or cool the laminate as it passes through depending on the characteristics required. Cooling may instead be effected by forced air.
Patent GB-148482-A (GB)
Title: Improvements in automatically controlled valve mechanism
IPC: G05D23/02
Filed: 1920-07-10
Abstract: 148,482. Yoder, C. M. Sept. 30, 1916, [Convention date]. Void [Published under Sect. 91 of the Act]. Thermostats.-A valve mechanism particularly applicable for use as a thermostat for controlling the supply of gas for heating purposes comprises a ball valve 10 adapted to be moved away from a knife-edge seat 9<a> by a loaded lever 22a pivoted to a second lever 16a and connected by a link 16 to a third lever 18. The third lever 18 bears against an adjustable abutment 19 and is pivoted at 18a to the lever 16<a> which in turn is pivoted to the casing. The lever mechanism is also loaded by a spring 26 arranged 'between a hook 26<a> on the casing and a cross-pin 26<b> on the lever 16<a>. One end of each of the levers 16a and 18 and of the link 16 is bifurcated to receive one or other of the single parts. The abutment 19 is formed on a member screwed through a boss 8b and provided with an indicator 19<b> arranged in a case 23. The thermostat comprises a copper tube 13 secured to a boss 12 on the casing and adjustably connected at its free end to a rod of porcelain 14 which bears against a projection 30 on the lever 16<a>. The ball valve is guided to and from its seat by ribs 11 formed on an enlarged part of the casing.
Patent GB-238565-A (GB)
Title: An improved device for regulating the pressure of mercury vapour in the working chamber of mercury-vapour apparatus and more particularly in mercury-vapour rectifiers
IPC: H01J13/22
Filed: 1925-08-14
Abstract: 238,565. Dõllenbach, W. Aug. 15, 1924, [Convention date]. Low-pressure metallicvapour apparatus. - In mercury-vapour apparatus, such as rectifiers, with a working chamber and a separate condensation chamber, the chambers are connected by one or more adjustable openings for the vapour. In a rectifier, the metal working chamber A and the condensation chamber B with a connection K to a p u m p are connected through a nozzle E cooperating with a pointed solid of revolution F. In modifications, a slide valve or rotary slide valve is used. The valve may be electromagnetically operated from the exterior of the apparatus, for example, by suspension of the body F from a spring-controlled armature I of an external solenoid H or by a shortcircuited rotor in the rotating field of an external stator. The valve may be arranged to give a fluid-tight joint when closed by a packing margin on the valve body dipping, when the valve closes, into a channel of mercury secured to the nozzle E or to the condensation chamber. The valve may be controlled at will or automatically; it may be opened automatically on an increase of the load current or working temperature of the chamber A or may be controlled by the voltage drop of the are or by the vapour pressure in the chamber A, a pressure gauge being interposed or the valve being sufficiently light to be raised by the vapour pressure to an extent sufficient to maintain the desired pressure in the chamber A. The valve may also be controlled by positive ion current towards the vessel A or an auxiliary electrode, this current increasing as the vapour pressure decreases. The entire working chamber may be maintained above the surrounding temperature by insulation or heating. The vapour pressure in the chamber A is thus adjustable and may be maintained steady to prevent back ignition in rectifiers, whilst gaseous impurities are carried by the vapour through the valve and removed by the pump.
Patent GB-495498-A (GB)
Title: A new or improved vibratory screen
IPC: B07B1/40
Filed: 1937-07-23
Abstract: 495,498. Sifting-apparatus. KRUPP GRUSONWERK AKT.-GES., F. July 23, 1937, No. 20477. Convention date, Aug. 5, 1936. [Class 117] In screening - apparatus of the kind comprising a screen box 1 resiliently mounted on a frame 3 resiliently supported on the base structure and carry. ing the means for driving the screen box, the frame 3 is mounted on the base structure by links 5 and springs 11 so as to have a reciprocating movement in a vertical plane. The screen box is mounted on the frame by resilient strips 2 parallel with the links 5, and by rubber buffers or springs 7 carried in a bridle 9 on the frame and adjustably tensioned by screws 8. The driving connection consists of an eccentric shaft 10 on the frame, a connecting'rod 12, and a link 13 pivoted to the screen box at 14 and acting between buffers 15.
Patent GB-903197-A (GB)
Title: Improvements in and relating to electrically driven spin-drying machines
Inventor: FLOYD GERALD WILLIAM
IPC: D06F37/36
Filed: 1960-06-10
Abstract: 903,197. Spring-applied brakes. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. June 2, 1961 [June 10, 1960], No. 20549/60. Glass 103 (1). [Also. in Group XIII] Braking of an electrically-driven spin drier is effected through the end surface of the rotor moving downwardly into contact with a braking surface under the action of a helical or spiral spring between the rotor and the driving shaft, which spring is stressed by the relative angular movement between the rotor and shaft when Current is supplied to the motor. The shaft 2 of the spur basket mounts the rotor 3 so that it has limited axial movement between collars 9, 10 through the interengagement between the rotor and shaft of helical splines 8. A helical spring 14 is connected between the rotor and shaft which is stressed when the motor is energized, the rotor transmitting the drive to the shaft and spin basket when it reaches the collar 9. De-energizing the motor allows the spring 14 to move the rotor axially down the shaft to bring a friction surface 13 thereon into contact with the friction surface of a brake 11.
Patent GB-148558-A (GB)
Title: Improvements in steam heating apparatus for baker's ovens and other purposes
IPC: A21B1/08
Filed: 1920-07-10
Abstract: 148,558. High Velocity Heating Co. July 13, 1917, [Convention date]. Coiled and sinuous tube superheaters.-In a system for heating bakers' ovens by means of a gaseous fluid such as superheated steam as described in Specification 28963/11, Venturi tubes K are arranged at the entrance to and also, if desired, at the exit from the superheater coils to increase the velocity of the steam.
Patent GB-184688-A (GB)
Title: Improvements in and relating to ships' davits
IPC: B63B23/04
Filed: 1921-08-02
Abstract: 184,688. Alexander, A. E., (Steward Davit & Equipment Corporation). Aug. 2, 1921. Securing cranks on shafts.-The, crank handle operating the gear by which a davit is luffed in and out board is connected to the screw so that it can be moved thereon into an unobtrusive position. This object is achieved by fitting the end of the screw with a tubular holder 8 for the crank 5, the holder terminating at its upper end in open ended ears 11<b> flanked by a recess 12. When in the operative position, the end 11 of the ciank rests between the ears 11<b> but it may be raised and then turned through a right angle with the end resting athwart the recesses 12.
Patent GB-148780-A (GB)
Title: Improvements in and relating to the manufacture of compounds of nitrogen
IPC: C01C1/08
Filed: 1920-07-10
Abstract: 148,780. Riedel, A. Nov. 20, 1915, [Convention date]. Void [Published under Sect. 91 of the Act]. Materials for making gas and other products.- Hydrated magnesium and calcium chlorides are added to the charge in a producer to facilitate the formation of ammonium chloride.
Patent GB-148797-A (GB)
Title: Method of producing small form pieces, especially buttons, from gypsum, cement or the like
IPC: C04B40/00
Filed: 1920-07-10
Abstract: 148,797. Haenicke, A. March 17, 1919, [Convention date]. Making buttons; materials for buttons. - Relates to the production of small shaped articles, e.g. buttons, from gypsum, cement, &c. and consists in pressing the finely-ground material in a dry state, removing the pressed article from the mould and subjecting it to a spray of water or setting-liquid until just sufficient liquid for setting has been absorbed. Burnt magnesite may be employed, a lye of chloride of magnesium being employed as a setting-liquid.
Patent GB-922613-A (GB)
Title: A utility of decorative rail device
IPC: A47B95/04
Filed: 1959-06-16
Abstract: 922,613. Skirting &c. rails. W. UHLENBRUCH, and G. FRANK. June 16, 1959 [June 16, 1958], No. 20686/59. Class 20 (4). [Also in Group XIV] A skirting, wainscoting rail, &c. for rooms comprises a base part 5 providing a permanent fixing adapted to be attached to the wall &c. surface, and a cover part 1 formed as a continuous rail and including a front panel 10 and at least one flange along its upper or lower edge whereby it defines a space to accommodate a service line, and interengaging components formed on said parts independently of the flange and arranged to permit removal of the cover part with a service line in position. In Fig. 1, the interengaging components are constituted by a projection 2 and a recess 3 on the cover part and base respectively. As shown in Fig. 5, the invention is applied to a picture rail. Several alternative forms of rail and arrangements of interengaging components are described.
Patent GB-149227-A (GB)
Title: Foldable fly catcher
IPC: A01M1/16
Filed: 1920-07-12
Abstract: 149,227. May, P. E. July 12, 1920. Fly-papers.-A foldable flycatcher comprises a hollow body 1 of a non-transparent and grease proof material, coated on its inner side with adhesive and provided internally with rods 3 adapted to engage at their upper and lower extremities in holes 6 in plates 4, 5 to maintain the fly-catcher in operative position. The upper plate 4 is provided with an internal flange 7, and the lower plate 5 with a groove to receive any adhesive flowing from the body portion 1. The exterior of the a protecting casing which may body 1 may be provided with be used for the display of advertisements. When folded, the rods 3 are withdrawn from the plates, and the body portion is pressed flat, the rods preventing the adhesive surfaces from coming into contact with each other.
Patent GB-1533572-A (GB)
Title: Transferring workpieces in machine tools
IPC: B21K27/04
Filed: 1976-05-11
Abstract: 1533572 Machine tool guideways; making guideways; making nuts SWANSEA JIG & TOOL CO Ltd 11 May 1976 [17 May 1975] 21072/75 Headings B3H B3A and B3W  Transfer means for re-orientating a blank when passing from one workstation to another in a machine tool comprises a guideway 10 of non-circular cross-section leading from one of the working stations to the other, the guideway being twisted about its longitudinal axis. Hexagonal nut blanks 27 are fed down a shoot 28 on to a reciprocating feed finger 29, which carries the blanks to a first punch station. The finger is mounted on a slide 31 which is actuated by a pneumatic piston and cylinder unit in cooperation with a cam 30 secured to a top plate 21 of the reciprocating press slide. Each blank is carried forward on the finger 29 until it drops off its front end and it is then pushed into position in a die block 22. The blank is then punched by a punch 18, ejected and pushed forward by the next following blank the blanks moving with adjacent flat faces in contact. As the line of blanks passes through the guideway 10, each blank is inverted through 180 degrees so that its other face can be punched by a punch 19. Finally the blanks are pierced by a punch 20. The blanks are held at each working station by opposed fingers 34, 35 formed with notches 43. They are moved by pivoted rocker arms 38, 39, via pins 36, 37. The arms 38, 39 are connected by a pin and slot mechanism 40, 41, the arm 39 being acted upon by a return spring 42. The fingers are pushed apart by each blank as it is fed between them and they are returned by the action of the spring 42 to locate the notches 43 on the corners of the blank. Manufacture of guideway.-A groove 12 of rectangular cross-section is machined in a body 11 of metal. A bar of hardened steel which almost fills the groove 12 is placed in it and one or more shims of hardened steel are inserted in the groove so as to fill it completely. A flat, straight cover 13 is welded to the body 11 to close the groove. The assembly so formed is heated to red heat and twisted through 180 degrees. When cool the weld is machined off, the cover removed and the shim(s) and bar drawn out. The cover 13 is then releasably secured to the body 11 and the guideway secured to blocks 14 for use in the press tool assembly of Fig. 3.
Patent GB-290184-A (GB)
Title: Improvements in fuel injection for internal combustion engines
IPC: F02M57/02
Filed: 1927-08-11
Abstract: 290,184. Hemmingsen, T. V. May 9, 1927, [Convention date]. Relief devices; regulating delivery by opening bye-passes and suction valves.-In a fuel injection pump for internal combustion engines, the suction chamber 5' is separated from the pump chamber 4 by an overflow valve 6, which is opened during the suction stroke of the plunger 2 by a cam 9 and lever 8 and is closed during the delivery stroke by a spring 7 until the cain opens it again in the direction of the pump pressure to interrupt the delivery. The moment at which delivery is interrupted may be varied by adjusting the cam 9 angularly on the shaft 10 by hand or governor. The pump may have a separate spring-loaded delivery valve. The valve 6 serves also as a relief valve.
Patent GB-1029175-A (GB)
Title: Process for the preparation of carbonyl compounds
IPC: B01J27/06
Filed: 1963-05-27
Abstract: A carbonyl compound is prepared by reacting an olefin in the gaseous phase with molecular oxygen at a temperature below 350 DEG  C. in the presence of water vapour, and of a halogen and/or a hydrogen halide, and of a catalyst comprising (a) a solid carrier, (b) a compound of a precious metal of Group VIII, (c) a compound of Fe, Co, Ni or a transition metal of Group I or VII and (d) a compound of an alkali metal having an atomic number from 11 to 55 inclusive. Olefins which may be so oxidized are ethylene, propylene, butane-1, pentene-1, butene-2, styrene, cyclopentene, butadiene, pentadiene-1 : 4 and isoprene.  The products may be aldehydes, ketones or carboxylic acids.  Examples comparatively describe the conversion of ethylene to acetaldehyde and acetic acid.
Patent GB-738230-A (GB)
Title: New hydrazones of ketosteroids
IPC: C07J75/00
Filed: 1953-07-30
Abstract: The invention comprises the benzilic hydrazone of keto steroids having the formula <FORM:0738230/IV (b)/1> where <FORM:0738230/IV (b)/2> is a keto steroid (e.g. estrone, cortisone 21-esters, desoxycortisone 21 - esters, cis - testosterone, 21 esters of 3 : 11 : 20 - triketo - 17a :21 - dihydroxypregnane and 3b  - hydroxy - 25 - keto D 5-27-norcholestene) and the purification of ketosteroids by preparing said hydrazone and separating by selective precipitation, followed by regeneration of the ketone, e.g. by acid hydrolysis or functional exchange with another ketone or an aldehyde.  The hydrazone may be formed in a neutral solvent, e.g. methanol, isopropanol, dioxane or benzene, in the presence of an organic acid containing 7 carbon atoms or less, e.g. acetic acid.  Examples describe the preparation of the compounds set out above and in addition the hydrazones of androstanolone benzoate, equilin and equilenin.
Patent GB-597836-A (GB)
Title: Improvements in or relating to oscillograph display systems
IPC: G01R13/28
Filed: 1945-08-20
Abstract: 597,836. Detecting vibrations. PEIRSON, D. H. Aug. 20, 1945, No. 21203. [Class 106 (iv)] [Also in Groups XXXVI, XXXVII and XXXVIII] A plurality of pairs of strain gauges 17, 17 ... 20, 20, Fig. 3, form Wheatstone bridges with resistances 16, 21, 16 and the out-ofbalance currents due to a change of resistance in one of the strain gauges of each pair are applied successively from leads 4 ... 7 over a switch 3 (see Group XXXVI) to an oscillograph at 30, 31, the indications produced by the oscillograph being spaced along a base line by a time base or a moving photographic film. Potentiometers 4a ... 7a may apply a distinctive bias to each lead 4 ... 7 so as to displace the indications of each pair of gauges to a distinctive extent at right angles to the base line, Fig. 2. As shown in Fig. 3, a microammeter 23 can be connected directly to leads 4 ... 7 over switches 25, 24 for testing ; the voltage applied to the bridges can be adjusted by potentiometer 26 and measured by voltmeter 27 ; resistances 28 can be selected to modify the attenuation of the signals applied to the oscillograph at 30, 31 ; and an external meter can be connected at 32 to test each pair of gauges over switches 25, 24. Where there is a large number of strain gauges, high-speed distributers and uniselector switches may be used, Fig. 5 (not shown).
Patent GB-641056-A (GB)
Title: Improvements in and relating to inductive windings
IPC: H01F41/04
Filed: 1948-08-11
Abstract: 641,056. Transformers and inductances. ENGLISH ELECTRIC CO., Ltd., and FRANKLIN, E. B. Aug. 11, 1948, No. 21213. [Class 38 (ii)] An inductive coil winding comprises one or more helically wound sections each having a plurality of layers, the layers being so interconnected that a capacitive by-path exists between at least a part of at least one end layer and at least a part of at least the other end layer. In one embodiment the coil is wound in two half sections A, B of twelve layers each. In each half the first layer is wound with wire from one drum, the second and third layers with wire from another drum, the fourth and fifth layers from the first drum and so on, the 12th layer being wound finally from the first drum. The adjacent ends of the first and second layers of each half are then cross-connected and the adjacent ends of the 11th layer connected together, the free ends of the 12th layer then forming the main coil connections. When winding the layers the winding directions must be such that the layers produce a concerted magnetization. In another embodiment the coil comprises only one half winding section having ten layers and the ends of the first and second layers are connected together, the free ends of the 9th and 10th layers forming the coil connections. In yet another embodiment each layer is wound simultaneously from the two drums beginning at the ends of the layer and working towards the centre where the wires are crossed over and continued to the opposite edges. Specification 587,997 is referred to.
Patent GB-965956-A (GB)
Title: Vertical axis rotary engines
IPC: F02B53/00
Filed: 1962-06-01
Abstract: 965,956. Rotary pumps and I.C. engines. YANMAR DIESEL ENGINE CO. Ltd. June 1, 1962 [June 2, 1961], No. 21249/62. Heading F1F. A rotary internal combustion engine of the Wankel type is mounted with its axis vertical for use as a marine outboard motor. The drive to the propeller is through an intermediate shaft 33 splined at one end to fit the engine output shaft 7, and coupled at the other end to a depending propeller shaft 37. An oil pump (Fig. 2) mounted on the intermediate shaft 33 draws lubricant from a sump 13 through a filter 45 and supplies it through passages 29, 31, 24, 25, 26 and 27 to the piston bearing 52 and an upper main bearing 54. The lubricant then escapes into a hollow 11 in the piston 9, where it cools the piston before draining into the sump 13. Cooling water is passed through pipes 17, 19 (to cool the lubricant) and 21 to passages 23 in the engine cylinder 1, before being discharged overboard.