baber/WOPTO huggingface dataset:
Patent GB-531627-A (GB)
Title: Motorizing unit for bicycles
IPC: B62M9/00
Filed: 1939-07-06
Abstract: 531,627. Motor cycles; driving gearing. DEHN, F. B. July 6, 1939, No. 19756. [Classes 79 (ii) and 79 (iii)] In a motor unit for attachment to a cycle the engine' A is supported above the pedal crank shaft M and drives through belt gearing 27 a roller E mounted in a supporting member 30 which is located below the pedal crank shaft and is manually controlled so as to bring the driving roller into and out of engagement with the rear wheel of the cycle. In the construction shown the engine A is pivoted at 10 by means of a plate 8 to a frame tube K and is slidably supported at 19, 20 by a bar 14 which is pivoted at one end at 16 to the frame tube K and at its other end is slidably supported in a clamp 23 on a frame tube J. The plate 8 is adjustably clamped at 9 to the engine. A lug 19 on the engine is forked downwardly so as to straddle the bar 14, thus permitting relative vertical and horizontal sliding movements between the lug and the bar. The member 20 is a plate clamped to the engine and having a hole through which the bar 14 can slide. The engine shaft carries a pulley 26 connected by a belt 27 to a driving pulley 28 rigid with a friction roller E adapted to engage the rear cycle wheel F, the belt also passing over an adjustable tensioning pulley 29. The pulleys 28, 29 are carried on the ends of a bell-crank member 30 pivoted at 35 to a clamp 33 on the rear wheel fork R, the member 30 being rocked about its pivot 35 by a hand lever 40 and Bowden wire 42 so as to bring the roller E into engagement with the road wheel to drive the latter. The pivot 35 is so situated that as the roller engages the road wheel the belt is tightened. The relative dispositions of the pulleys 26, 28, 29 is such that the belt 27 passes on either side of the pedal crank spindle M and does not interfere with the pedals.
Patent GB-1501669-A (GB)
Title: Apparatus and method for resurfacing the cylindrical face of large drier drums
IPC: B24B5/16
Filed: 1975-05-12
Abstract: 1501669 Grinding SCOTT PAPER CO 12 May 1975 19797/75 Heading B3D A method of forming a predetermined crown contour from end to end on the exterior surface of a drier drum 24 comprises rotating the drum about its axis 32, contacting the surface with a rotating grinder 17 movably mounted on a carriage 8 and positioned with respect to the axis 32 by a cam 27 having a contour with a predetermined relationship to the predetermined crown contour to be formed, traversing the carriage from end to end of the drum, and rotating the cam in proportion to the movement of the carriage to cause the grinder to move in a path having the shape of the predetermined crown contour. In apparatus for carrying out the method, a bed 9 having a flat way 21 and V-way 22 is mounted on the floor adjacent the drum 24 which is mounted on a shaft carried by bearings 6 for rotation about the axis 32. The carriage 8 is movable along the bed by a motor 25 driving a pinion 24 engaging a rack 26. A grinder 7 has a base 11 which is mounted for movement about a pivot 19 on the carriage and is formed with a guideway 10 along which a grinder frame 12 is adjustable by adjustment means 14, the frame rotatably supporting a contact wheel 15, driven by a motor 18, and a backstand wheel 16, an abrasive belt 17 being entrained around the wheels. The grinder 7 is movable about the pivot 19 as the carriage is moved along the bed to form the contour on the drum by the engagement of a follower 31 on the grinder with the cam 27 which is rotated by a worm drive 28, 29, from the rack 26. The contour of the contact wheel is convex and the shape of the cam 27 depends on the contour to be produced on the drum and the movement of the point of contact along the contour of the contact wheel as it moves from the centre of the drum to the ends (Fig. 3). The cam is produced on a computercontrolled milling machine fed with the necessary data. The periphery of the contact wheel may be resilient. In another embodiment, the abrasive belt assembly 15, 16, 17 is replaced by a rigid grinding wheel.
Patent GB-516702-A (GB)
Title: Improvements in or relating to metal bonded abrasive articles
IPC: B24D3/08
Filed: 1938-07-05
Abstract: 516,702. Abrasives. CARBORUNDUM CO., and TENNANT, W. J. July 5, 1938, No. 19925. Addition to 497,006. Drawings to Specification. [Class 70] In abrasive' articles, as described in the parent Specification in which granular or powdered abrasive is mixed with a metallic bond and heated so as to bring the metal to a molten or plastic state, the bond consists of copper together with another metal which forms a diactile copper base alloy containing at least in part a solid solution. Copper containing tin up to 20 per cent., cobalt up to 10 per cent. or zinc up to 39 per cent. may be used. A composite grinding disc or wheel may contain expensive abrasive in the working surface and cheaper abrasive in the remainder added in an amount to produce equal shrinkage.
Patent GB-354942-A (GB)
IPC: A23F3/18
Filed: 1930-07-01
Abstract: Tea and coffee preparations have the noxious taste and smell removed by intimately mixing in the dry state with activated carbon or silicic acid and adding boiling water.  A small quantity of boiling water is added first, and the brew subsequently diluted with more boiling water to bring it to drinkable strength. The activated carbon or silicic acid may be charged with substances soluble in water, such as glycerine, sugar or other carbohydrates.
Patent GB-924967-A (GB)
Title: Improvements in or relating to controls for hydraulically-operated apparatus
Inventor: CARTER THOMAS WOOLLISCROFT
IPC: B66F9/04
Filed: 1960-06-07
Abstract: 924,967. Hydraulic apparatus; valves. LONDON HYDRAULIC POWER CO. June 6, 1961 [June 7, 1960], No. 19976/60. Classes 69 (2) and 135. [Also in Group XXX] A lift platform 10, which is movable between two levels by an hydraulic ram 12, is controlled by a valve 14 and an auxiliary valve 17 which is in series between the valve 14 and ram 12 and which is controlled by the platform 10 as it approaches a landing level to restrict the liquid flow thereby reducing the speed of the platform, and limit devices at the landing levels are actuated by the platform to operate the valve 14 to cut-off the liquid flow. The valve 14, Fig. 2, comprises a pair of stepped cylinder spaces 31, 32, which are connected by a bore 33, which contain pistons 34, 35 and which are connected to the drain 16 and pressure inlet 15 respectively. The cylinder spaces 31, 32 are associated with spindles 38, 39, which have internal bores 57 and ports 58, which slide in fluid-transfer sleeves 42, 46, 47, separated by sealing rings 48, 49, 50 and mounted in a bore 40 and which are actuated by solenoids 21, 22, Fig. 1, controlled by limit switches 23, 24, and push-button switches 25, 26 for calling the lift. When solenoids 22, 23 are de-energized, the spindles 38, 39 move outwardly under the action of springs 53 and fluid from the pressure inlet 15 passes through a bore 61, ports 58 and bores 57 in the spindles 38, 39, the external channel 47a of sleeve 47, through the interior of the sleeve and through sleeve 46 and a bore 62 to the cylinder spaces 31, 32 to act on the larger end of pistons 34, 35, thereby cutting off the inlet 15 and outlet 16 from the ram connection 13. When solenoid 21 or 22 is energized, the associated spindle 38 or 39 moves inwardly until the bores in the spindle are cutoff from the pressure supply and place the bore 62 and cylinder space 31 or 32 in communication with drain thereby allowing the piston 34 or 35 to move to connect the ram connection 13 with the pressure outlet 16 or inlet 15 through the bore 33. The valve 17 is of the rotary plug-type and, is moved from its closed position, in which it allows a small flow of liquid, to its open position and vice versa by engagement between the platform 10 and tappets 20 on a rod 19 connected to the valveoperating arm 18. At the limits of travel, the platform 10 actuates limit switches 23, 24 to de-energize the associated solenoid 21, 22.
Patent GB-1473520-A (GB)
Title: Elevator system
IPC: B66B3/02
Filed: 1974-05-07
Abstract: 1473520 Lift signalling WESTINGHOUSE ELECTRIC CORP 7 May 1974 [8 May 1973] 20062/74 Heading G3N The description is similar to that of Specifications 1473518, 1473519 but the claims are directed to the use of the matrix to operate car position indicators. The indicators are in the car and/or on landings or supervisary centre. The position indicated is that of the car if it is at rest, or the first landing at which it could stop if travelling. Each matrix row represents a group of floors and each column a particular floor within the group.
Patent GB-455910-A (GB)
Title: Improvements in and relating to metal cutting tool bits
IPC: B23K35/00
Filed: 1936-07-20
Abstract: 455,910. Tools. BRITISH THOMSONHOUSTON CO., Ltd., Crown House, Aldwych, London. July 20, 1936, No. 20063. Convention date, July 24, 1935. [Classes 83 (ii) and 83 (iii)] A metal-cutting tool bit consists of upper or cutting layer 1 of tantalum carbide with a binder such as cobalt, a foundation layer 3 of tungsten carbide and a binder, and one or more intermediate layers 2 of a binder with tungsten and tantalum carbides in any proportion. The tantalum carbide may be wholly or in part replaced by carbide of another metal of the fifth group, and the tungsten carbide replaced by carbide of another metal of the sixth group such as molybdenum. The tip may be copper brazed to a shank 4. Each layer may contain 3-20 per cent of cobalt as a binder. The foundation layer of powdered material may be placed in a steel mould and covered by the intermediate and top layers also in powdered form. Pressure is applied and the material then sintered in a hydrogen furnace. Alternatively the successive layers of powdered material may be placed in a carbon mould and simultaneously pressed and sintered. If more than one intermediate layer is used, the layers nearer the foundation layer have the greater proportion of tungsten carbide.
Patent GB-1110658-A (GB)
Title: Removal of heavy metal contaminants from chromate oxidation products
IPC: C07C51/16
Filed: 1966-05-06
Abstract: Heavy metal contaminants are removed from the products, obtained by the oxidation of an alkyl aromatic hydrocarbon in the presence of carbon dioxide and soluble inorganic dichromate salts, by treating them with an amount of carbon monoxide sufficient to precitate substantially all of the heavy metals from the solution at a temperature of 150-350 DEG  F., the mixture during treatment having a pH of at least 8, and subsequently removing the precipitate from the carboxy aromatic acid salt products of the process which remain in solution. In an example 2,6-dimethyl naphthalene is treated with carbon dioxide and an aqueous solution of a mixture of sodum chromate and sodium dichromate and the product containing solid Cr2O3, NaHCO3 and Na2CO3 and a solution of these carbonates and the sodium salt of 2,6-dicarboxynaphthalene is treated with carbon monoxide, the mixture filtered and the filtrate containing salts of 2,6-dicarboxy naphthalene acidified to precipitate the free acid, which is separated by filtration.
Patent GB-604305-A (GB)
Title: Improvements in or relating to reciprocating pumps
IPC: F02M59/44
Filed: 1945-08-08
Abstract: 604,305. Removing oil-leakage from pistons. BENDIX AVIATION CORPORATION. Aug. 8, 1945, No. 20287. Convention date, Aug. 17, 1944. [Class 122 (i)] [Also in Group XXVIII] In an injection pump comprising a cylinder 7, Fig. 1, and a piston 13 formed with a helical timing groove 16, an annular groove 44 is formed in the piston below the lowest part of the helical groove 16 and adapted to be connected by a.passage 45, Fig. 3, to a low pressure chamber 43 outside the cylinder 7. The chamber 43 communicates with the inlet to the pump to return thereto oil which leaks between the piston and cylinder and escapes along the passage 45 which is arranged at about 90 degrees to the inlet and byepass ports of the cylinder and entirely out of contact with the helical groove 16.
Patent GB-148400-A (GB)
Title: Improvements in devices for stropping razors
IPC: B24D15/08
Filed: 1920-07-09
Abstract: 148,400. Schumann, E. March 4, 1919, [Convention date]. Stropping-apparatus.-A device for stropping double-edged razor blades comprises a plate of metal bent to form a handle a and a curved part b. Two slots c are formed in the curved part and are so disposed that when the blade e is placed in position its edges project slightly from the slots. The blade is held in position by means of tongues f formed on the part b which engage the holes in the blade and are of such length that the blade is bent, as shown in Fig. 1, when in position. A strop is threaded through the slots c and the device is moved to and fro along the strop, being tilted to lift the foremost edge of the blade clear of the strop and to bring the rear edge into contact therewith.
Patent GB-744468-A (GB)
Title: Improvements in the production of interpolymers
IPC: C08L67/06
Filed: 1952-08-14
Abstract: Unsaturated polyesters and styrene are copolymerized in bulk in the presence of 0.1 to 3 per cent of an unpolymerizable hydrophobic substance containing a hydrocarbon radical of 10 to 40 carbon atoms, and a catalyst and accelerator.  Hydrophobic substances specified are paraffin wax, ceresin, montan wax and its esters and stearic acid. The unsaturated polyesters may be derived from maleic, fumaric, muconic, phthalic, terephthalic, succinic, adipic, sebacic and suberic acids and dihydric alcohols such as glycol, diglycol, propane-diols, butanediols and 1,4-butanediol.  Catalysts disclosed are benzoyl, lauroyl and t.-butyl peroxides and 1 - hydroxy - 11 - hydroperoxy - dicyclohexyl peroxide and the accelerators may be the naphthenates of iron, manganese and cobalt.  In a preferred process the polymerization is carried out in a thin layer, the polymerizable mixture containing one component of the initiation system while the second component is added either to the substrate before application of the mixture or to said layer of mixture after its application. The products are useful as lacquers for iron or wood and may include titanium dioxide.
Patent GB-1456061-A (GB)
Title: Method and apparatus for measuring the refractive error of an  eye
IPC: A61B3/10
Filed: 1974-05-09
Abstract: 1456061 Measuring refraction of eye TROPEL Inc 9 May 1974 [9 May 1973] 20446/74 Heading G1A [Also in Division G2] Apparatus for measuring the refractive error of an eye comprises means for directing a pattern of radiant energy into the eye and means for detecting the focus of the energy reflected from the eye, The directing means consist of an infrared source 11, a polarizing beam-splitter 12, condenser lens 13, drum-shaped chopper reticle 14, polarizing beamsplitter 15, slits 16 of reticle 14, light path 17, reticle motor 18, collimator lens 19, focusing lens 20, eyepiece 21 and quarter wave plate 22. The detecting means consist of a mask 27, focusing lens 28 and detector 29. The apparatus further comprises a digital computer 30, means for converting the analog signal from the detector 29 to a digital stream fed to the computer 30 and means 31, 32 responsive to the computer for varying the focus and orientation of the radiant energy pattern directed into the eye. Means may be provided for detecting the beginning of a blink, the computer being programmed to stop examination of the eye during the blink.
Patent GB-185307-A (GB)
Title: Improvements in catches for boxes
IPC: A45C13/10
Filed: 1921-08-04
Abstract: 185,307. Marks, B. Aug 4, 1921. Catches yielding to pull and pressure.-A wire d bent to form a loop and secured to the lid of a box by forming the ends as prongs d<1>, rides over and engages with a domeshaped boss b on a plate c on the box. To prevent use of the fingernail for releasing the catch, a crescent-shaped guard-piece f is embossed on the plate c.
Patent GB-1039880-A (GB)
Title: New acylaminopyrazolones and colour photographic materials containing them
Inventor: MENZEL KARL-HEINZ
IPC: G03C7/384
Filed: 1965-05-17
Abstract: The invention comprises compounds of the general formula <FORM:1039880/C2/1> in which R represents an alkyl or olefinically unsaturated alkyl group having between 8 and 20 carbon atoms.  These compounds are prepared by heating the appropriate acyl chloride at about 80 DEG  C. for two hours with 1-(31-sulpho-41-ethoxy)-phenyl-3-amino pyrazolone-(5) which is prepared by reacting 4-ethoxyphenylhydrazine sulphonic acid (3) with the hydrochloride of b -ethoxy-b -iminopropionic acid ethyl ester. The compounds of the invention are photographic colour couplers (see Division G2).
Patent GB-277793-A (GB)
Title: An improved fuel feeding device for internal combustion engines
IPC: F02M37/02
Filed: 1926-08-24
Abstract: 277,793. Dash, G. H., and Williams, A. H. Aug. 24, 1926. Vacuum apparatus.-Apparatus for supplying fuel to internal-combustion engines comprises a chamber a connected by a permanently open connection i to the suction of the induction pipe, by a pipe to the fuel tank, and by a valvecontrolled pipe k to atmosphere. As the fuel rises in the chamber a, a float v lifts a rod u and opens the air valve n, thereby destroying the vacuum so that the fuel may flow through the pipe q into an outer chamber w connected to the carburettor. The outlet pipe q is controlled by a needle valve at the end of the rod u.
Patent GB-1046792-A (GB)
Title: Coding equipment for pulse code modulation systems
Inventor: REEVES ALEC HARLEY
IPC: H04B14/06
Filed: 1963-05-24
Abstract: 1,046,792. Linkwork. STANDARD TELEPHONES & CABLES Ltd. May 22, 1964 [May 24, 1963], No. 20842/63. Heading F2K. [Also in Division G4] A linkwork, Fig. 2, comprising a combination of toggles R1, R2, R3, each having a " swing " which is twice that of the preceding toggle, and suitably proportioned stiffnesses, is so arranged that when the bi-stable point 22 of the smallest toggle is displaced to the left (as shown) and when a damped oscillatory motion is superimposed upon the displacement, the toggles eventually come to rest in a stable condition of equilibrium in which the pattern of settings of the toggles represents (as precisely as is possible) the extent of the displacement imparted to the point 22. Each toggle, e.g. R2, comprises two pins 34, 35, fixed with respect to a plate 39, and against which two levers 25, 26 are caused to press by a spring 30. Two links 16, 17 connected to the ends of the levers 25, 26, determine a point 21 having two stable equilibrium positions, namely, either to the right (as shown) of the ends of the levers 25, 26, or to the left. As described toggles R2 and R3 are free to move bodily in the direction of their axis XY and the toggle R1 has its plate 38 fixed.
Patent GB-373478-A (GB)
Title: Improvements in butterfly valves
IPC: F16K1/24
Filed: 1931-07-22
Abstract: 373,478. Butterfly valves. USHIO, Y., 1016, Oaza Kanamachi, Kanamachi, Minami Katsushika-Gori, Tokio. July 22, 1931, No. 20996. Convention date, July 30, 1930. [Class 135.] A butterfly hinged valve of the kind withdrawn from its seating and then rotated is provided with means, preferably a balancing or byepass valve 21 and passage 19, for putting the valve chamber into communication with the low pressure side before opening the valve. The first action of rotation of the wheel 15 raises the slidable member 20 on the screwed spindle 3 and with it the by-pass valve 21 to the open position until it abuts against a stop 24 ; further rotation of the wheel 15 thereupon depresses the spindle 3 thereby causing inclined parts 4 thereon, operating in inclined grooves 11 in the valve member 7, to withdraw the latter from its seating 8. Subsequently the valve is turned to a position substantially parallel with the flow by manipulation of a wheel 16 operating worm gearing 18. The dual operating wheels can be replaced by single wheel manipulation by the provision on the spindle of a block provided with a groove partly vertical and then helical engaging a fixed pin in the casing whereby the withdrawal and balancing, and subsequent rotation to the open position take place in succession.
Patent GB-206233-A (GB)
Title: Improvements in and relating to inductances used in high frequency circuits
IPC: H01F17/02
Filed: 1922-08-01
Abstract: 206,233. O'Keeffe, M. J., and Dickinson Electrical Manufacturing Co., Ltd. Aug. 1, 1922. Inductances. - In basket inductance coils applicable as variometer and reaction coils in wireless telegraphy or telephony, and of the kind wound on a movable frame of radial pegs, the wire is passed each time over two or more pegs before crossing between pegs from one side or layer of the coil to another, the number of pegs being so chosen that crossings do not take place between adjacent turns, and that there is a displacement around the ceil between corresponding parts of altenate turns. The first turn of a flat coil wound on eleven radial pegs 1 .. 11, Fig. 2, the wire passing two pegs each time before crossing between pegs, is shown in Fig. 2 in full lines, subsequent turns being shown in dotted lines. In modifications, the coil is wound around a cylinder on two or more series of radial pegs. When two series 1 .. 11, 1<1> .. 11<1>, Fig. 3, are used, the coil is wound as aoove on each series in turn, and is then wound across between the two series, passing two pegs of each series before crossing to the other series, the three windings being then re peated.
Patent GB-998226-A (GB)
Title: A current limiting arrangement
IPC: H02H9/02
Filed: 1963-05-27
Abstract: 998,226. Protective arrangements. TRENCH ELECTRIC Ltd. May 27, 1963 [May 25, 1962], No. 21164/63. Heading H2H. [Also in Division H3] A saturable reactor 16 is connected in series with a load 12 and is normally saturated by control current derived from a rectifier 17 connected across the load. If a load fault occurs so that excessive current is taken from the supply 13, 14, the A.C. magnetization of the reactor neutralizes the control magnetization and the reactor desaturates, thereby limiting the fault current. Preferably an inductor 18 is included in the control circuit 1 to delay any change in control current which may occur. The reactor may consist of two separate cores, each having an A.C. winding and a control winding, the A.C. windings being connected in series aiding relationship and the control windings in series opposition, Fig. 3 (not shown). Alternatives are a single A.C. winding common to both cores, Fig. 6 (not shown), or a single core having two A.C. windings and one control winding. A three-phase embodiment is outlined, Fig. 7 (not shown).