baber/WOPTO huggingface dataset:
Patent GB-814110-A (GB)
Title: A method and means for forming helicoidal-involute gear wheel teeth
Inventor: TURNER LESLIE ARTHUR
IPC: B23F5/02
Filed: 1956-10-24
Abstract: 814,110. Gear-grinding. GEAR GRINDING CO. Ltd. Oct. 14, 1957 [Oct. 24, 1956], No. 32398/56. Class 83 (3). [Also in Group XXIII] A method of forming the faces of helicoidal-involute gear-wheel teeth comprises using a grinding wheel a, Figs. 1 and 3, having on each of its side faces a working surface b of concave section, such that the wheel makes contact with adjacent pairs of teeth e along straight generating lines lying between points c, d adjacent the tip and root portions of the faces, and imparting an angular movement to the gear wheel during relative movement between it and the grinding wheel. The concave surfaces of the grinding wheel are of less curvature than the convex faces of the teeth to be ground, and have, during grinding, the straight generating lines c, d in contact with similar lines on the faces of the gear teeth. The gear-wheel f is carried by a spindle 10, Fig. 9, between a headstock 12 and a tailstock on a slide 21, which can be reciprocated parallel to the wheel axis past the grinding-wheel a mounted with its axis substantially at right angles to the faces of the wheel teeth. Alternatively the grinding wheel may be reciprocated relative to the gear-wheel. The spindle 10 is connected to a rod 11, Fig. 7, which is angularly moved during reciprocation of the slide 21 to produce the helical form on the teeth of the wheel, by metal tapes 14 wrapped around the rod 11 and secured to a bar 15 coupled at 18 to a sinebar 17 on a rotatably adjustable disc 16 secured to the machine frame. The grinding-wheel is supported by a slide 23, Fig. 9, on a horizontal guide 22. For tooth forms having portions of different involutes, each with its own generating line, the form of the grinding wheel is correspondingly modified.
Patent GB-281687-A (GB)
Title: Improvements in the manufacture of electron emitting bodies
IPC: B64C25/38
Filed: 1927-12-01
Abstract: 281,687. Westinghouse Lamp Co., (Assignees of Sproesser, W. C.). Dec. 1, 1926, [Convention date]. Resistance furnaces. - An internally-heated furnace through which hydrogen passes is cooled at one end by fluid circulation through a jacket 10, and is closed by a screw cap 9. Alternatively the furnace may be evacuated or contain an inert atmosphere.
Patent GB-268419-A (GB)
Title: Improvements relating to disc wheels
IPC: B60B3/08
Filed: 1925-12-23
Abstract: 268,419. Lines, W. Dec. 23, 1925. Disc wheels.-A light metal wheel for perambulators, toy vehicles, &c. comprises a pair of discs 3, the edges of which are turned over the plain flanges 4a of the tyre-carrying rim 4 so that the load is supported by the tension of the discs.
Patent GB-985336-A (GB)
Title: Improvements in or relating to inverter circuits
Inventor: DAVEY ANTHONY WALTER
IPC: H02M7/525
Filed: 1962-08-23
Abstract: 985,336. Automatic voltage control. GENERAL ELECTRIC CO. Ltd. Aug. 23,1963 [Aug. 23, 1962], No. 32477/62. Heading G3R. [Also in Division H2] A parallel inverter comprises a transformer whose primary winding 2 has a centre-tap and two intermediate taps,the ends of the winding being connected to customary thyristors 6,9, and the intermediate tappings being connected to additional thyristors 7, 8, so that by firing the latter an enhanced output is obtained. As shown,D.C. from a source is filtered at 21 and supplied between the common cathode connection of the thyristors and the centre tap through a choke 22. The thyristors 6 and 9 are provided with gate clamping elements 10,11,12, 13;and a commutating capacitor 18 in series with a current limiting inductor 9 is provided. Elements 23, 24, 25 and 26 may be provided to facilitate the operation of the inverter when the load is reactive. The transformer has a secondary winding 3 feeding a load 5 through an output filter 4. The control of the inverter is derived from a blocking oscillator 27 providing pulses at twice the output frequency. These are supplied to a trigger circuit 28 providing two square waves which are phase displaced by 180 degrees. The pulses are also supplied to a sawtooth generator 29 the output of which is fed to a comparator circuit together with a D.C. signal from a source 31. The output of the comparator is a pulse whose phase and length depends on these two signals. Two gating circuits 32,33 are fed with the outputs of the circuits 28,30, and provide four signals for firing the four rectifiers 6.... 9 sequentially every cycle. However the output of the inverter is dependent on the instant of firing of the rectifiers 7,8, which is dependent on the phase of the pulses from the comparator, i.e. on the D.C. signal. As shown, in an automatically regulated arrangement, this D.C, signal is derived from comparison of a reference 37 with a sample voltage derived from a transformer 35 across the load, and operates to maintain a constant voltage output.
Patent GB-920077-A (GB)
Title: Improvements relating to reversing-gearing
Inventor: LENTON SIDNEY JOHN
IPC: F16H3/14
Filed: 1960-09-22
Abstract: 920,077. Change speed and clutch control; reversing gearing. MORRIS MOTORS Ltd. Oct. 27, 1961 [Sept. 22, 1960], No. 32534/60. Class 80 (2). Reverse gear controlling means comprises two clutch controlling and gear-selecting linkages rotating a selector means in opposite directions to operate a synchromesh forward and reverse gear coupling mechanism. An internal combustion engine driven clutch 3 drives an input gear 4 which may be clutched by a synchromesh mechanism 12 to an output shaft 11 for ahead drive or may drive through two countershafts, having gears 6, 9 to a gear 10 similarly clutchable to the shaft 11 for astern drive. The mechanism 12 is actuated by a fork 13 and a lever 14 rotated in opposite directions by two hydraulic slave cylinders 27, acting through lost motion linkwork 24, 22 and levers 17, 18 rigid with a shaft 15 to which the lever 14 is attached. A cross-pin 34 in the main clutch release lever co-operates with slots 33 in the links 24 to provide clutch release during shift. A manual control lever 53 is mounted for lateral angular movement, limited by stops 59, 60, in a member 56 mounted for pivotal movement about pins 57, 57A, and has blocks 67, 68 engageable with pivoted levers 61, 66 operating hydraulic master cylinders 40, 41 connected to the slave cylinders 27. The lever 53 is normally held against the stop 60 by a spring 73, with the lower end of the lever through a gate 69. In this condition, the blocks 67, 68 are clear of the lenses 61, 66 and a spigot 70 engages a hole 71 in a pivoted plate 72 connected to the engine throttle by link 76, to provide engine control only.
Patent GB-280393-A (GB)
Title: Improved means for supplying liquid fuel to internal combustion engines
IPC: B01D35/00
Filed: 1926-12-23
Abstract: 280,393. Mugleston, R. L. Dec. 23, 1926. Stop-gear.-Apparatus for stopping an internalcombustion engine when the fuel reaches a predetermined level in the fuel tank comprises a vessel A to which fuel is normally supplied by a pipe D inside the vessel A which extends almost to the bottom; the fuel flows through a connection C to the carburettor. The outflow of the tank is connected to a union G and the bottom of the tank is arranged at the level indicated at L so that when the liquid level has fallen to the level of the top of the vessel A, which is connected to atmosphere by a pipe R, an air lock occurs and the fuel supply stops. A two-way tap F is then turned to enable the remaining fuel to enter the vessel A by a direct pipe E. According to a modification the piping D is replaced by a passage inside the vessel, and the two-way tap F by a needle valve which normally closes a connection to the bottom of the vessel.
Patent GB-1019005-A (GB)
Title: Packaging method and apparatus
IPC: B65B47/10
Filed: 1962-08-24
Abstract: 1,019,005. Packaging between webs. CLOUD PACKAGING CORPORATION. Aug. 24, 1962 [Sept. 11, 1961], No. 32605/62. Heading B8C. General arrangement; forms of package; adjustment for different sizes.-A web 16 (Fig. 1) is drawn into moulds 11 on a carrier 10 by suction, the compartments so formed are filled with material from hoppers 18, and a second web 21, which has been made tacky by a liquid applied at 24, is sealed over the first web. In the arrangement illustrated a drum 10 has pairs of moulds 39, 40 (Fig. 4), the larger moulds receiving detergent powder and the smaller moulds a blueing powder. Each mould is formed by a plastic insert secured by a screw 41 and spaced from pockets in the drum by spacing washers 42. The lands between and around the pockets are polished to provide better adhesion to the film. The plastic inserts are a loose fit in the pockets to permit the vacuum to reach the web. Rotary valves associated with the hollow interior of the drum shaft control the application of suction. A solvent may be added to the web 16, to ensure its adhesion to the drum, and the roller 17, which is spring-pressed against the drum, may be heated. The film may be of polyvinyl alcohol and the solvent may be water. The drive to the drum may be continuous or intermittent. Cutting and separating packages from drum.- The edges of the web are pushed inwardly, to separate them from the drum, by an inclined roller 27 (Fig. 7). Delivery of the packages to a conveyer 35 (Fig. 1) may be facilitated by admitting air to the vacuum packages 44. The web is cut longitudinally by fixed knives 28 and transversely by knives 32 rotating on a shaft 31. The knives take into grooves 33 in the drum.  Delivering material.-A surplus of material is delivered to each compartment, and is then smoothed off by three resilient blades 57, 58, 59 (Fig. 1) of which the first blade 57 extends some way into the compartment to leave a void which is subsequently filled by material swept by the blades 58, 59. Alternatively the blade 57 may be replaced by a soft rubber roller. The heights of the hoppers 18 can be adjusted. Sealing webs together; applying adhesive.- Water is applied to the web 21 by a wick 64 extending from a vat 68 supplied through an adjustable float valve (not shown) to provide a constant head. The wick is mounted on pivoted arms 69 so that it normally rests against the web by its weight, but may be swung aside when the machine is stopped. The webs are pressed together by a heated roller 23.
Patent GB-359221-A (GB)
Title: Improvements relating to sand blasting machines
IPC: B24C9/00
Filed: 1930-10-30
Abstract: 359,221. Sand-blast. WILSON, F. W. and TILGHMAN'S PATENT SAND BLAST CO., Ltd., Atlantic Works, Broadheath, near Manchester. Oct. 30, 1930, No. 32607. [Class 60.] A sand-blasting machine of the type having a rotary work-supporting table and a sand-blasting device which is traversed across the table area, has two (or more) superposed work-tables, the upper table c being adapted to support large articles for treatment, while the lower table a supports smaller articles which receive the blast passing through gaps between the upper larger articles. The upper table may consist of radially or otherwise arranged flat bars having legs d resting on the table a which is of grid formation. In a modification, Fig. 3, three superposed tables a, c, c<1> may be employed.
Patent GB-382778-A (GB)
Title: Improved drip return valve for beer or other pumps
IPC: B67D1/16
Filed: 1931-11-25
Abstract: 382,778. Recovering waste liquids. HALL, T., 93, Preston Old Road, Blackpool. Nov. 25,1931, No. 32643. [Class 102 (i).] Drip from a beer engine or other pump collects in a chamber A and flows by a passage C to a chamber D, which is inserted in or connected at both ends to the suction pipe of the pump. The outlet from the chamber A is controlled by a float valve b and the passage C and chamber D are provided with check valves c, d<2>.
Patent GB-177564-A (GB)
Title: Improvements in and connected with continuous annealing furnaces
IPC: C21D9/00
Filed: 1920-11-20
Abstract: 177,564. Gibbons Bros., Ltd., and Marle, M. van. Nov. 20, 1920. Annealing-furnaces.-In a continuous annealing-furnace of the kind in which the goods are carried by an endless conveyer through a heating- chamber water-sealed at each end, the conveyerchain is arranged to hang in loops dipping into the water tanks and is positively driven at each end. The furnace shown has a heating-chamber 2 provided with hoods 3, 4, extending into the water tank 1 and the goods are carried through the chamber by the endless chain 6a which passes over end sprocket-wheels 5, 6, and intermediate sprocket-wheels 7, 8, this arrangement permitting the chain to hang in loops which dip into the tank 1. The sprockets 5, 6, 7, 8, are all positively driven from the first motion shaft 19, the motion being transmitted through an eccentric 22, ratchet lever 24, ratchet-wheel 26, and spur- and-pinion wheels 28, 29, to the shaft 30 which, through spur-and-pinion gearing 31, 32, operates the shaft 18 of the sprockets 6. From the shaft 18 the sprockets 8 are driven through sprocketwheels 15, 17, and an endless chain 16. A similar arrangement is provided to drive the sprockets 5, 7, the motion being transmitted from the shaft 19 by connecting-rods 35, 35a, 36, and levers 34, 34<a>. A coned pulley 29 is provided on the shaft 19 to permit the conveyer to be run at different speeds, and for the same purpose the ratchetwheels 26, which are engaged by the pawls 25, are made in three sections 26, 26a, 26b, having teeth of different pitches. At the outlet end a free-wheel device is introduced into the driving- gear so that the driving-gear may be run independently of the drive. Each of the sprocketwheels 5, 6, 7, 8, is formed of a central disc 40, having bolted to both sides toothed plates 41 which are formed with a flat plate portion forming a sector of a circle of the same diameter as the disc 40. To facilitate engagement and disengagement of the chains with the sprockets, there are provided rollers 44 beneath the sprockets 5, 6, and a narrow plate 45 which just clears the teeth of the sprocket 8. The hoods 3, 4, are each constructed of an end frame 50 having an opening corresponding with the mouth of the chamber 2, to which the frame 50 and flanged side plates are secured. The top and inclined front of the hood are covered bv plates 52, and the side plates are provided with detachable inspection windows immediately above the sprockets 7,8.
Patent GB-888678-A (GB)
Title: A process for the stabilization of heparin preparations against colour changes
Filed: 1960-09-23
Abstract: Heparin preparations are stabilized against colour change by removing oxygen therefrom and storing in oxygen-free condition. The preferred method used is to add to the heparin preparations a substance capable of forming sulphite ions in water, e.g. alkali-metal sulphites, bisulphites and hyposulphites (preferred), the corresponding alkaline-earth metal salts and sulphurous acid.  The preparations may be made and stored under an inert gas, e.g. carbon dioxide or nitrogen and the passage of these gases through liquid preparations may be utilized to displace the oxygen therefrom.
Patent GB-446835-A (GB)
Title: Improvements in or relating to the reproduction of recorded sounds
IPC: G11B7/12
Filed: 1934-11-14
Abstract: 446,835. Optical sound-reproducing apparatus. BERGAMINI, N., 18, Via L. Perosi, Tortona, Italy. Nov. 14, 1934, No. 32784. [Class 40 (ii)] A sound-record in the form of a sinuous line of uniform width made on a band 5, Fig. 1, of paper &c. by means of a pen, pencil or similar marking means 7 actuated by an electromagnet 8 fed with the variable currents corresponding to the sounds to be recorded is reproduced by passing the band between a light source 1 and light-sensitive cell 6, Fig. 2, an optical system 2, slotted screen 3 and a plate 4, the opacity of which is graduated in the longitudinal direction of the slit 3<a>, being arranged in the light path as shown. According to a modification, Figs. 3 and 4 (not shown), the plate 4 may be replaced by a lens having a strong spherical aberration. If desired, the sound reproduction may be effected by reflection in which case the record may be made on an opaque sheet of paper mounted on a rotating disc or helically wound on a mandrel. The means for gradually varying the intensity of the light beam from one end thereof to the other may comprise a wedge-shaped prism arranged between the light source and the mandrel, Fig. 5 (not shown), or, as shown in Fig. 6, the light reflected from the record may pass through the aperture 3<a> in a dark chamber 12 where it is reflected by a mirror 4<c> having a large radius of curvature on to a small condensing mirror 13 from which it is reflected through a small aperture in the central axis of the mirror 4<a> on to the cell 6.
Patent GB-679859-A (GB)
Title: Improvements in or relating to food mills
IPC: A47J43/25
Filed: 1949-12-22
Abstract: 679,859. Graters. SIDES SOC. ANON. Dec. 22, 1949 [June 8, 1949], No. 32805/49. Class 28 (ii). The perforations 10 of a rotary paddle food grater are elongated and have raised up cutting edges 9 extending over part only of the perforations. The inclined rotated vanes or paddles 2 have their trailing edges 14 perpendicular or steeply inclined to the grating surface 5 so that these edges will scrape the food around against the rasp-like edges 9 of the perforations 10 of the grater. The grater 5 is replaceable as it rests on a bottom peripheral shoulder 11 and is held against rotation by having a tooth-like projection engaging in a slot in the body. The grating edges 9 are arranged in rows which lie at an angle to the rear edges of the rotated vanes to give a progressive grating action.
Patent GB-1277657-A (GB)
Title: Reciprocating machines, such as fluid-pressure motors, pumps, compressors or the like
Inventor: AVERMAETE GILBERT VAN
IPC: F01B1/06
Filed: 1969-06-30
Abstract: 1277657 Labyrinth seals G VAN AVERMAETE 30 June 1969 [3 July 1968 24 June 1969] 32841/69 Addition to 1208768 Heading F2B [Also in Division F1] In a reciprocating machine, e.g. a fluiddriven motor, a pump, a compressor or the like, comprising a rotor coaxially mounted in a stator and provided with radial cylinders having pistons therein connected to a crank-shaft mounted eccentrically to the rotor, the rotor and stator are provided with co-operating annular grooves and ribs at each side of the cylinders to prevent leakage axially of the rotor. The machine in Fig. 1 comprises a compressor rotor 1 which supplies air to a combustion chamber (43), Fig. 2 (not shown), supplying working gas to a motor rotor 2. Each rotor 1, 2 is formed at each side of its radial cylinders 4, with annular sealing grooves 9 which co-operate with annular sealing ribs 10 on the stator 3. Additional sealing ribs 12 may be provided intermediate the ribs 10 to co-operate with the annular rotor surfaces lying between adjacent grooves 9. The ribs are formed on divided rings 14, 15 retained by clamping rings 17 and screws 18. Alternatively the sealing grooves may be provided in the stator and the ribs formed on the rotor, Fig. 5 (not shown). Moreover, a number of brass or copper sealing plates (58), Figs 6, 8 and 9 (not shown), may be provided, each lying in a respective radial plane and crimped by its radially outer edge into a respective slot (60) in the stator, the radially inner edge being notched to receive the sealing ribs with small clearance (e.g. 1/10 mm.) and thereby provide a sealing baffle in the circumferential direction of the rotor.
Patent GB-171899-A (GB)
Title: Improvements relating to gear wheels
IPC: B23F1/04
Filed: 1920-11-22
Abstract: 171,899. Lucas, H., and Turner, W. C. Nov. 22, 1920. Gear-cutting; tools.-In a process for rounding the ends of the teeth of a spur-wheel a, an annular groove b, Fig. 2, is first cut at the base of the teeth and the wheel is then mounted on a spindle c in a bearing secured to the table of a screw press, and a formed cutting-tool f is actuated from a handle h to round the teeth, preferably in a single radial cut.
Patent GB-1194431-A (GB)
Title: Fluorinated Ethers and their Derivatives
IPC: C07C51/41
Filed: 1967-07-18
Abstract: 1,194,431. Perfluorinated ether derivatives. MONTECATINI EDISON S.p.A. 18 July, 1967 [22 July, 1966; 16 Dec., 1966], No. 33042/67. Heading C2C. Novel fluorine-containing ethers of the formula or mixtures thereof, wherein L, M and N are from 0 to 99, the sum M+N+L being from 0 to 99 and the ratio (N+L) : (M+1) being from 0 to 2, C 3 F 6  is a unit derived from the opening of the olefinic bond in hexafluoropropylene, the different perfluoroalkylene units having a random distribution along the polymer chain with any terminal CF 3 O(C 3 F 6 O) unit being of the formula CF 3 O-CF 2 CF(CF 3 )O, and X is a hydrogen atom or a radical of the formula -COOH, -COOMe, -COOR, -COF, -COCl, -COBr, -CONR<SP>1</SP>R<SP>11</SP> or -C#N, Me being an equivalent of an electropositive metal, R being a C 1-12  alkyl, cycloalkyl, or aryl radical, and R<SP>1</SP> and R<SP>11</SP> each being a hydrogen atom or a C 1-12  alkyl, aryl or cycloalkyl radical, are obtained by reacting compounds of the formula with an excess up to 200% of alkali or alkalineearth bases or solutions thereof in water or in other proton donor solvents at 10 to 180 C., to give compounds of the above formula in which X is a hydrogen atom and/or a -COOMe radical, where Me is an alkali or alkaline-earth metal, and, if desired, acidifying compounds of the latter formula and converting them into other functional derivatives, e.g. by reaction with ammonia or diazomethane. Compounds of the above formula in which X is a hydrogen atom are useful as lubricants, inert fluids for heat or hydraulic transmission or as dielectric media (see Division C5). Fluoroform and salts of trifluoroacetic acid may be produced as by-products.
Patent GB-1161593-A (GB)
Title: Tensioning Apparatus
Inventor: LANGLEY VERNON
IPC: G01N3/10
Filed: 1965-08-04
Abstract: 1,161,593. Tensioning devices. CABLE COVERS Ltd. 31 Oct., 1966 [4 Aug., 1965], No. 33268/65. Heading F2G. An hydraulic or pneumatic jack for stressing wires, tendons or other elongate members comprising an outer tube 2, an inner tube 4, and an intermediate piston tube 5, is provided with an electrical, mechanical, or combination of electrical and mechanical load-measuring device or devices of the compression type 60 to signify the load applied to the tendon or member being stressed, said device or devices being operatively positioned between the outer tube end and a load-bearing member secured directly or indirectly to the inner tube. As shown, the loadmeasuring device is tubular and is carried on a tubular extension 58 screwed to the inner tube, a nut 62, or alternatively a flange, being provided on said extension to act as a load-bearing member. In operation, the tendon or member being stressed (not shown), is entered into the front of the jack with attendant barrels and wedges (not shown) being positioned in a recess 20 formed in a nozzle body 16 secured to the piston tube, said nozzle bearing against a bearing plate of the member to the prestressed by the tendon. Pressure fluid is admitted to a port 70 and outer tube is moved to the right producing a corresponding movement of the inner tube to the right by transmission of the load through the load measuring device 60, nut 62 and extension tube 58. An annular wedge ring 26 carried by the inner tube forces a serrated wedge member 24 to grip the tendon. Further pressure is applied until the desired tensioning of the tendon as signified by the load-measuring device or devices is achieved. Pressure fluid is then admitted to channels 76, 78 to move a locking plunger 38 forwardly to urge the barrels and wedges of the tendon into locking engagement with the bearing plate thereby holding the tendon in the stressed condition. Fluid pressure is then admitted to the other side of the piston to release the wedge 24.