baber/WOPTO huggingface dataset:
Patent GB-1090874-A (GB)
Title: Improvements relating to voltage controlling apparatus
Inventor: WHITE GEOFFREY
IPC: B60L9/26
Filed: 1964-07-30
Abstract: 1,090,874. Control of D.C. motors; tap changing transformers. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. June 15, 1965 [July 30, 1964; Jan. 8, 1965], Nos. 30228/64 and 947/65. Headings H2H and H2J. [Also in Division H1] A system providing progressive voltage variation between two taps on a transformer to supply a traction motor M wherein a series of whole cycles or half cycles are provided comprises pairs of reverse parallel connected thyristors TA1, TA2, TB1, TB2 connected to the taps which vary the ratio of cycles or half cycles fed from the lower and higher taps. A constant current generator 1 has its current output I divided in correspondence with a signal C into variable proportions which are passed into capacitors 3, 4, the voltages from which pass to a comparator 5 giving an output on line 9 when the voltage on line 7 is more positive than on line 6 and vice versa. Lines 8, 9 feed AND gates 11, 12 which pass a signal to a bistable circuit when a pulse of frequency f from a generator 21 occurs, for example once per cycle hence the appropriate thyristors will be fired in proportion to the current division. The signals on lines 13, 14 are passed to circuits 15, 16 which remove with a delay 23 a charge from each capacitor equal to I/f each cycle hence the average charge remains constant and instantaneously has a sawtooth ripple. The signal C is derived from a continuous potentiometer P coupled to the tap changing mechanism. In an alternative arrangement the pulses occur every half cycle. A mean voltage detector 19 maintains the current I constant. The system may be modified to supply a plurality of motors, the control circuit being arranged to fire the respective thyristors in succession thus reduce the instantaneous load. In a modification (Fig. 3, not shown) a polarity responsive circuit is incorporated into the system to ensure that successive half cycles have opposite polarity to avoid a D.C. bias in transformer L.T.
Patent GB-171408-A (GB)
Title: Oil feeding means
IPC: F01M9/10
Filed: 1921-11-14
Abstract: 171,408. Wills, C. H. Nov. 12, 1920, [Convention date]. Channels in shafts and cams.- To secure the uniform distribution of lubricant to the cams of an internal-combustion engine, which are supplied by oil pumped through a hollow cam-shaft, tubes 7 with expanded ends are placed in the bore of the shaft, and the oil passes through small openings 10 to the annular spaces around the tubes, whence it is delivered to the cams 2 through openings 3. The oil is supplied by a pump 5 to a central point in the cam-shaft.
Patent GB-1428792-A (GB)
Title: Mould transport assembly for blow moulding apparatus
IPC: B29C49/04
Filed: 1973-03-05
Abstract: 1428792 Blow-moulding ETHYL DEVELOPMENT CORP 5 March 1973 [8 March 1972] 30397/75 Divided out of 1428791 Heading B5A The subject matter of this Specification is substantially identical to parts of that of Specification 1,428,791, but the claims relate to the assembly for transporting the parison between the parison supply station and a blow station.
Patent GB-171296-A (GB)
Title: Improvements in truck tipplers or apparatus for emptying trucks and the like
IPC: B65G67/00
Filed: 1920-10-27
Abstract: 171,296. Provay, G. A. P. Oct. 27, 1920. Rotary tipplers.-Comprises pairs of levers adapted for holding trucks in position in rotary tipplers during the tipping operation. The tippler is of known construction comprising a series of braced rings 9 connected by longitudinal girders 8, and rotated by ropes engaging grooves in the peripheries of the rings; while the truck is supported on a carriage 13 which moves along the inclined track 12 to bring the side of the truck into contact with a stop 17 during the tipping movement. Between each pair of rings 9 a pair of independently-actuated levers 20, 21 is arranged. Each lever 20 is pivoted to its corresponding ring at 22 and is counterweighted at the tail end to maintain it horizontal in the loading position of the tippler. The free ends of both levers are connected by a cord 29 passing over a pulley 33 on a travelling weight 34. In the loading position, the line of pull of the cord 29 between the levers and the guide-pulley 31 is so near to the pivots 22, 23 that the weight 34 is unable to pull the levers down. The rotation of the tippler causes the pivots 22. 23 to become more remote from the line of pull until the levers are pulled down by the weight to engage and clamp the truck as shown in Fig. 3. In this position the action of the counterweight 28 is reversed, and now assists in keeping the lever 20 in its lowered clamped position. Pulleys 30, 37 on the lever 20 and the ring respectively form additional guides for the rope when the levers are in the clamped position. The levers may be fitted with wooden stops at the points where they contact with the trucks.
Patent GB-1017023-A (GB)
Title: A process for the production of textile sheet formations with a felt-like character
IPC: D04H1/40
Filed: 1964-08-04
Abstract: Sheets of felt-like character are made from an aqueous dispersion containing a mixture of fibres of three different kinds.  Each kind comprises 10 to 80% of the total.  The first kind of fibre is a tubular fibre of cellulose regenerated from xarthate solutions.  The second is a natural or synthetic fibre; examples are polyamides, polyesters, regenerated cellulose, glass fibres, cotton and natural silk.  The third is another synthetic fibre having a flow point at least 10 DEG C. below the flow points of the other fibres; examples are copolyamides, copolyesters, polylaurolactam and polypropyene. The sheet is made by pouring the dispersion on to a fourdrinier wire, dewatering, drying and subjecting to heat treatment at a temperature at which the fibres of the third kind soften, but the others do not. The heat treatment may be with saturated or superheated steam, hot air infra-red heaters.  Heating may be by steam when the fibres of the third kind may soften at a lower temperature in steam than when dry.  The heat treatment may be in two stages, the first above the softening point but below the melting point of the third fibres, the second above their melting points but below the melting point of the others.  The heat treatment may be carried out free of tension, e.g. by carrying the sheet on the fourdrinier wire through an oven, so that the sheet can contract in its own plane and expand in thickness. When heat-treatment is in two stages, the first may be free of tension, but the second may be under tension, e.g. in a tenter.  The dispersion may include a wetting agent, e.g. a polyoxyethylated fatty alcohol.  The product may be pressed between rollers.  The products may be used to make leather substitutes.
Patent GB-174215-A (GB)
Title: Improvements in locomotives
IPC: F22B21/00
Filed: 1920-10-28
Abstract: 174,215. La Torre, H. de. Oct. 28, 1920. Water-tube boilers.-A locomotive is fitted with a water tube boiler comprising headers 12, 16 connected by water tubes 17 secured by means of flanges 18, 19 to the inner walls of the headers. The headers are fitted with connections 11, 15 to a water and steam receiver 8. The outer walls of the headers are connected by stays 20 passing through the tubes 17. Baffles 28, 24 are provided for deflecting the hot gases.
Patent GB-856273-A (GB)
Title: Improvements in and relating to mixing
IPC: B01F7/00
Filed: 1959-09-08
Abstract: 856,273. Mixing. UNION CARBIDE CORPORATION. Sept. 8, 1959 [Sept. 5, 1958], No. 30545/59. Class 86- Apparatus for mixing materials forming viscous masses consists of a cone-shaped rotor having zones which are alternately smooth and stepped, the stator having corresponding smooth and stepped zones whereby the materials being mixed are subjected between opposed stepped zones to a homogenizing and shearing action, and between opposed stepped and smooth zones to a folding and raking action. The rotor 22 is screwed on to the end of a drive shaft 16, lubricant being introduced through the passage 19a. The stator 13 has alternate smooth and stepped zones 27, 28 and the rotor has corresponding smooth and stepped zones 23 24. The materials are introduced at 39, the centrifugal action of the rotor tending to prevent the materials from passing up the surface 40 towards the shaft 16; the materials being subjected to the alternating treatments as they descend spiral-wise to the lower end of the cone to be discharged at 44. A coolant is introduced to the stator body at 34, a manifold 35 feeding channels 36 leading to a manifold 37 connected to the discharge 38. Rotor speeds of from 50 to 10,000 r.p.m., and clearances between the stepped portions of 0.0035 to 0.14 inches are referred to. In a modification, the rotor is inverted, the material being fed to the larger end and discharged at the smaller end. In an example, a polyurethane foaming formulation was mixed and CO<SP>2</SP> gas was fed in with the materials to help in the forming of the foam.
Patent GB-776079-A (GB)
Title: Improvements in or relating to target apparatus for shooting ranges
IPC: F41J5/04
Filed: 1954-10-25
Abstract: 776,079. Kinematograph apparatus. KOHLER, K. Oct. 25, 1954 [Oct. 1, 1954], No. 30621/54. Class 97(1) [Also in Group X] Kinematograph shooting target apparatus (Group X) includes means for projecting one or more moving target pictures on a screen on which there is also projected a static scene. Fig. 1 shows a projector 9 for projecting a moving picture on a screen 1 comprising a transparent strip or strips conveyed over rollers 8; alternatively, the projector may be situated in front of the screen. In Fig. 3, a target surface 23 includes moving target scenes 21, 22, projected from apparatus shown in Fig. 1 located behind each moving scene area, the remainder of the surface 23 having a static scene projected on it. Fig. 2 shows means for starting and stopping the travel of the film through a projector. When an electromagnet Mk is energized, an axially displaceable dog clutch member 14 is drawn clear of a stationary member 15, a brake 18 is released and a motor 12 rotates the projector shutter 13. Upon the magnet Mk being de-energized, dog member 14 is moved into engagement with member 15 by a spring 19, the brake 18 is applied, and the motor 12 switched off, the shutter 13 being brought to rest in a position such that the projected light 20 is unobstructed. The momentum of the rotating parts including the motor armature is absorbed by one or more springs 17, but means may be provided for disengaging the shaft 11 from the motor. In the circuit shown in Fig. 8, the electromagnet Mk is not energized, the dog-clutch members (Fig. 2) are engaged and the film is stationary. Upon loading a rifle which includes a contact S, the contact is closed, a relay A is energized and contacts a 1 , a 2 , are closed and opened respectively. Magnet Mk is thus energized, the clutch disengaged and the film scene begins to move. When the shot is fired, contact S is opened, Mk is no longer energized and the film comes to rest so that the scene is immobilised in the position at the moment of firing the shot. A further electromagnet Mp moves the paper strips forming the projection screen thus concealing the hole made by the projectile.
Patent GB-731658-A (GB)
Title: Improvements in or relating to tipping wagons
Inventor: HANSON FREDERICK THOMAS
IPC: B61D9/02
Filed: 1953-11-07
Abstract: .731,658. Railway tip-wagons. CENTRAL WAGON CO., Ltd. Feb. 24, 1954 [Nov. 7, 1953], No. 30888/53. Class 103 (4). [Also in Group XXXIV] A railway tipping wagon comprises a chassis 14 on which is pivotally-mounted a tipping body 10, hand-releasable catch mechanism 22, 22a, 23 to hold the wagon body in upright position until discharge of the load is required, and tie-rods 20 extending longitudinally of the chassis below the axles, each tie-rod being provided with springs 30 which engage resiliently axle bearing-boxes 17 when the body 10 is completing the tipping operation, whereby adverse effects to the parts of the wagon caused by tipping are reduced. The body 10 is provided with stops 28 which engage end faces 13a of support-members 13 when the body is tipped and springs 28c may be provided to reduce the shock of impact. The body 10, as shown, is supported at each end by a semi-circular rocker member 11 in rolling engagement with a track plate 12 mounted on a support member 13. The member 11 has pins 11a which co-operate with spaced grooves 31a on a transverse bar 31 to prevent sliding of the rockers upon the track-plates 12. The wagon is provided at one end with a frame consisting of uprights 37 and transverse bars 37a whereby a shunter by placing the end of a shunting pole over brake lever 36c, inserting the pole under an appropriate transverse bar 37a, and bearing down on the pole, can obtain increased brake pressure.
Patent GB-1470373-A (GB)
Title: Fuel injector
IPC: F02M61/10
Filed: 1973-06-30
Abstract: 1470373 Liquid fuel injector; fuel injection pumps BRITISH LEYLAND UK Ltd 12 June 1974 [30 June 1973] 31262/73 Heading F1A and F1B A fuel injector assembly comprises a valve element 16 having a co-axial bore within which a plunger 18 is slidable, the motion of the plunger acting to increase the pressure within an annular chamber 15, the result of which is upward movement of valve element 16 and flow of fuel through a nozzle 13. A passage 47 in plunger 18 is closed by a non return valve consisting of a ball 51 and spring 49 contained in a chamber 40 within valve element 16, the passage communicating with a fuel inlet 12 via a cross boring 48 and annular channel 42. The lower portion of valve element 16 is tapered producing a conical surface 46 ending in a pintle shaped tip 45 held resiliently in contact with the nozzle 13 by a spring washer 44. Fuel is supplied to the assembly under pressure sufficient to overcome the tension in spring 49, the fuel entering chambers 40 and 15 which communicate via passages 41. After the chambers are filled, plunger 18 is caused by the action of a solenoid 50 to descend thereby increasing the pressure within chambers 40 and 15; the pressure within chamber 15 acts upon conical surface 46 to force valve element 16 upward against the tension in spring washer 44 enabling fuel to be injected through nozzle 13 and into a combustion chamber, the quantity of fuel injected being dependent upon the stroke of plunger 18. In a second embodiment Fig. 3 (not shown), the annular chamber 15 is linked directly with the inlet 12 which contains a non return valve allowing pressurized fuel to flow into the chamber whilst preventing the escape of fuel through the inlet 12 as plunger 18 descends. In a third embodiment, Fig. 1 (not shown) the ball 48 and spring 49 are replaced by a solenoid operated valve. In this embodiment, the stroke of plunger 18 is constant, the metering of fuel being governed by the duration for which the solenoid operated valve is held open.
Patent GB-385710-A (GB)
Title: Improvements in steam or vapour heating plants
IPC: F24D3/04
Filed: 1931-11-11
Abstract: 385,710. Fluid-actuated and thermally-actuated valves. PFEIFFER, E., 770, Gabelsbergerstrasse, Kaaden-on-Eger, Czecho-Slovakia. Nov. 11, 1931, No. 31289. Convention date, Nov. 12, 1930. [Class 135.] In a process for distributing heat by circula. tion of a vapour such as steam a main vapour pipe 1 has branches 2 each leading through an automatic cut-off valve 6, and hand-controlled valve 4, to a boiling plate 10. The vapour and condensates flow through a pipe 19 and handoperated expansion valve 22. The cone valve 6 is held open by a spring 7, and closes in the event of vapour passing through it at excessive speed due, for example, to breakage of a pipe, and is again opened when the nipple 5 of valve 4 is caused to raise the cone 6 from its seat. The valve 4 is of similar construction to that of valve 22, the rod 21 of which has a screw thread 25, and is turned by a handle 29. If the valve spindle 21 has a higher coefficient of expansion than that of the casing 22, the adjusted opening of the valve will be greater in a cold condition than in a hot, and will become smaller with increasing temperature, so that by selecting the material and the length of spindle any desired ratio between the hot and cold positions may be obtained.
Patent GB-193491-A (GB)
Title: Improvements in or relating to driving belts
IPC: B29D29/10
Filed: 1921-11-23
Abstract: 193,491. Dunlop Rubber Co., Ltd., and Hardeman, W. E. Nov. 23, 1921. Belts.-In V-belts built up of several layers of rubber-coated canvas which may be sewn together and are covered in rubber by passing the core through a rubber extruding machine, strips of the prepared canvas are fed simultaneously to a pair of rollers which may be heated to cause the layers to adhere, or the layers may be heated before entering the rollers. The sheet. Fig. 1, thus produced is cut into V-shaped strips along lines Ax by inclined rotary cutters or by tilting a table carrying the sheet in two directions with relation to a vertical band knife or other cutter. The material may be cut to belt lengths before entering the rollers, or in the sheet, or from the strips. The layers may be sewn together, and the core is covered with a layer B of rubber by passing it through a rubber-extruding machine.
Patent GB-623055-A (GB)
Title: Improvements in rails or beading
IPC: B60J1/20
Filed: 1946-10-23
Abstract: 623,055. Conduits. FRIDOLPH, A. E. Oct. 23, 1946, No. 31431. [Class 36] [Also in Groups X and XIV] A rail or beading for securing lining fabrics or the like 2, 3 to walls of vehicles or buildings comprises a base strip 21 adapted to be secured to the wall, and a capping strip 30 which can be applied thereto to clamp the fabric therebetween by means of a tongue and channel connection, there being a second channel or track 14 on one of the strips to receive and hold slidable supporting elements for curtains C, covering a window 1. Fabricreceiving channels and co-operating capping strips may be provided on both sides of the curtain track, the capping strips being locked in position by a " snap " engagement. Electric conductors W may be located in the channel and masked by the capping strip. Specifications 619,215 and 619,302, [both in Group XIV], are referred to.
Patent GB-1215336-A (GB)
Title: Absolute value function generator
IPC: G06G7/25
Filed: 1968-07-02
Abstract: 1,215,336. Polarity insensitive amplifiers. INTERNATIONAL BUSINESS MACHINES CORP. 2 July, 1968 [12 July, 1967], No. 31505/68. Heading H3T. A circuit for reproducing at its output, signals of the same amplitude as the input signals but of one polarity irrespective of the input polarity comprises a feedback differential amplifier 1 having the input signal fed to lock input terminals, the path to the terminal to which the feedback is applied including means 2, 10 responsive to the polarity. Feedback and other parameters are chosen such that the joint effect of the signals at the input provides a gain of the circuit for negative signals is - 1. For positive signals the upper input to the amplifier is clamped to earth by the output transistor 10 of a polarity detector and the resulting gain of the circuit is + 1. The polarity detector comprises a limiter 19, 20, a comparator 16, 17 comprising the input signal level with an adjustable zero reference level from 22, an amplifier 35 and a clamp transistor 10 having its base biased to compensate offset due to the saturated emitter collector voltage of the clamp. Adjustable resistors may be provided where indicated to set the operating conditions.
Patent GB-831501-A (GB)
Title: Improvements in or relating to plugs for repairing holes in tubeless tyres
Inventor: WOODS EDGAR CHARLES
IPC: B29C73/06
Filed: 1956-10-17
Abstract: 831,501. Tyre repair plugs. JOHN BULL RUBBER CO. Ltd. Oct. 14, 1957 [Oct. 17, 1956], No. 31567/56. Class 144 (1). A tubeless tyre repair plug comprises a solid shank 10 to plug the puncture with a head 11 at one end to abut the inner surface of the tyre, the shank 10 having a plurality of axiallyspaced ridges 13 on its surface and the head 11 having a maximum diameter greater than that of the shank by not more than three times. As shown, the head 11 is conical with a conically-recessed undersurface 23 to provide thin tapered edges 24. The shank 10 may comprise a cylindrical portion z adjacent the head which joins with a cylindrical tail 12 by a tapered portion y. The portions z, y having the ridges 13 which may comprise separate rings, or a helix. The ridges may be of D-section, or may be of triangular or trapezoidal section including a face normal to the shank axis and directed towards the head. Alternatively, when of triangular section, both faces may be inclined to the shank axis.
Patent GB-654846-A (GB)
Title: Improvements in or relating to the sorting or separation of granular products
IPC: B07B13/00
Filed: 1947-12-01
Abstract: 654,846. Separating granular materials. GOEJE, M. J. DE. Dec. 1, 1947, No. 31732. Convention date, April 16, 1943. [Class 117] Sound granular products such as peas, seeds or grains are separated from wormeaten products or damaged ones by the action of picking members in the form of one or more rotating discs 5 provided with needles 6 which point in the direction of movement of the disc or discs and against the relative movement of the products with respect to the needles, the worm-eaten or damaged products being impaled on the needles 6 and when raised above the products in the drum 1 are brushed or wiped off by brushes 7 to fall into a discharge channel 8 and common outlet 9 for all such channels. As shown, the discs are mounted at right angles to the longitudinal axis of the containing drum 1, but one or more spindles with the discs thereon may be mounted at right angles to the longitudinal axis with the distance between the spindles less than the diameter of the discs. The distance between the discs may be adjustable according to the nature of the products to be picked and may be provided with needles 6 on both sides. A pair of brushes 7 rotated about the longitudinal axis thereof in opposite directions are provided between adjacent discs 5 or the brushes may be mounted on discs rotated on shafts parallel to the disc shafts. For causing the products to traverse the drum from the inlet 2 of the drum to the outlet 3, the drum may be inclined or a helical picking disc may be used. Alternatively, as shown, the picking members 5 are provided with propelling blades 10.
Patent GB-483754-A (GB)
Title: Improvements relating to carriers for or combined with bags for golf-clubs
IPC: B62B1/20
Filed: 1936-11-20
Abstract: 483,754. Golf-bag carrier. GREGORY, F. W. Nov. 20, 1936, No. 31850. [Class 132 (ii)] A golf-bag carrier consists of a light metal framework, the bag-supporting member 1 being inclined at about 45‹ to the horizontal, and connected at one end of the bottom member 2 by a hinge 6. Two splayed legs 4 are united on a cross-piece 8 connected by a bolt 7 to the member 1. The lower ends of the legs 4 are connected by bolts 9 to the ends of the cross members 3, connected by bolts 10 to the member 2. Relatively large wheels 12 on brackets 11 are connected to the member 3. A rigid handle 14 is connected to the member 2 by a bolt 15. The lower end of the bag is secured by straps 16 to metal brackets 17 secured to the member 1 and the top by a bolt 18 passing through a strip 19 in the mouth of the bag. For smooth and easy motion the projection of the centre of gravity of the carrier and its load is arranged to be just inside the wheels 12. The carrier may be dismantled for packing. A carrier designed to fold up more conveniently has the cross-piece 8 hinged to the member 1, and the separate legs are pivotally connected to this cross-piece.