baber/WOPTO huggingface dataset:
Patent GB-863037-A (GB)
Title: Method of manufacturing dished articles
IPC: B21D53/26
Filed: 1958-02-06
Abstract: 863,037. Making wheel discs; forging; rolling; spinning; curling. COX, D. S. Feb. 6, 1958, No. 3976/58. Classes 83 (2) and 83 (4). A method of manufacturing a dished article, e.g. a wheel disc 7, from a flat plate comprises forming the plate into a cylindrical blank which is then die-formed to curl and at the same time to gather at least a major portion of its length inwardly so as to thicken and to provide the blank with a continuous taper as seen in crosssection, the central section of said gathered portion being next formed into a plane and the rest of the blank into a tapered outwardly-flared portion which is spin-formed and axially elongated to a predetermined dished contour. In an embodiment a metal plate is formed into a cylinder and the abutting ends welded together. Curling.-The cylinder 4 is placed between dies 6 and 7 and the ends pre-curled to facilitate later operations. Forging.-The forming operation is effected between dies 12 and 14, the dies 14 having an abutment 17 which engages and limits the expansion of the tapered skirt 18 of the blank and assists the thickening of the inwardlycurled portion 16. Alternatively, the dies may be formed as shown in Fig. 8. A central ejector 24 is provided. In another embodiment the pre-curled blank, is formed between dies 36 and 46 (Fig. 10) the die 36 being surrounded by a spring-loaded confining ring 38 and a guide-ring 44 surrounding the die 46 is provided with a hardened insert 50 which has an abutment 56 for the blank. Rolling.-In a further embodiment the first forming operation is carried out by rollers 84 (Fig. 11) mounted in a rotatable housing 70 carried by a vertically reciprocable ram (not shown). The rollers co-operate with a die 62 around which the cylindrical blank 4 is placed with one end supported on the die block 60. The next forming operation is effected between dies 90 and 92 (Fig. 13) whereby the central section of the blank is formed into a common plane and further work hardened. Spinning.-Finally the preformed and flattened blank is spun on a mandrel 104 by a roller 116 to the desired final shape. A member 108 clamps the blank on the mandrel 104. The metal movement accomplished by the spinning is such that the overall diameter of the blank is not increased and the thinning and tapering action work hardens the spun portion to complement the previously work hardened central section.
Patent GB-586565-A (GB)
Title: Improvements in or relating to internal combustion turbine plant
IPC: F04D27/02
Filed: 1942-03-25
Abstract: 586,565. Air compressors. BAUMANN, K., and METROPOLITAN-VICKERS ELECTRICAL CO., Ltd. March 25, 1942, No. 3984. [Class 110 (i)] [Also in Group XXIX] To prevent stalling of an axial-flow air compressor at low speeds, air is extracted from an intermediate point in the compressor by valves, carried by the inner rotor, which are closed by centrifugal means when the speed increases. The extracted air may be returned to the compressor inlet. In Fig. 1, an annular extraction port 11 in the rotor at the end of the firat compressor stage leads air to a chamber 24, whence it is returned, past blading 25c, to the compressor inlet. The chamber 24 is guarded by an annular ported ring valve 23 having internal teeth meshing with a. number of unbalanced pinions 19 meshing also with teeth on ' a sleeve 14. Relative rotation of the sleeve 14 is opposed by a helical spring 15. In Fig. 3, the extracted air passes through ports 33b in an inner sleeve 33 and ports 28a in an outer sleeve 28. Between the sleeves and opposed to the ports 28a are C spring members 34 which open under centrifugal force and seat upon the ports 28a. In Fig. 6, valves 36 are mounted on pivots 37 and are coupled either by pins 42, or by gear teeth to a ring 41. A pair of C springs are secured at one end to the ring 41 and at the other end to a part of the rotor, so that the ring 41 rotates relatively to the rest under . centrifugal force. The C springs may have their ends in unsecured abutting relation with the ring 41 and the rotor. The devices are particularly applicable to contra-rotational compressors such as described in Specifications 586,553 and 586,555.
Patent GB-708094-A (GB)
Title: Apparatus for feeding rod-like articles to and through a furnace or other heating zone
IPC: B21J17/00
Filed: 1952-02-15
Abstract: 708,094. Rotary elevators. ETCHELLS & SON Ltd. D., and ETCHELLS, W. K. Feb. 11, 1953 [Feb. 15, 1952], No. 4031/52. Class 78 (1) [Also in Group XII] Rotary drum apparatus for feeding rods, e.g. cropped pins for the production of forged-headed bolts, to and through a furnace or other heating zone, comprises a feed shoot 11, a positively driven drum 12 formed with peripheral grooves 13 receiving the pins 10 from said feed shoot 11, an arcuate pin retaining member 25 forming part of an endless chain 26 and pressing against the pins on the drum, a reciprocating pusher 38 Fig. 2 positioning the pins for entry into a heating zone, e.g. through an arcuate slot in a furnace wall, and a discharge shoot 41. The drum 12 is driven by an electric motor 15 through reduction gearing, a variable speed pulley device 19, a chain drive 21 and a pinion 23 on a lay shaft 22 meshing with a circular rack 24 on said drum. The chain 26 is supported on sprockets 27, 28, 29, 30 and 31 respectively, one of which 29, is driven from the variable speed pulley device 19 by a belt 32, a lay pulley 33 and a flexible shaft drive 34. Pulleys 27, 29 and 31 are counterweighted in order to tension the chain 26, especially the section 25 which is arranged to travel at the same speed as the peripheral speed of the drum. As described in Specification 661,763, the reciprocating pusher 38 near the feed shoot 11 having a stepped forward end, engages a number of pins simultaneously, and, by repeated strokes, pushes them forward in successive stages to the desired extent. The pusher is mounted on a radial arm 39 reciprocated from the gearbox 16 of the electric motor 15 by lever, link and eccentric mechanism 40. The rotary drum apparatus is mounted on a wheeled carriage 42 supported on rails 43. In a modified arrangement, Fig. 3 (not shown), the retaining member 25 comprises a stationary flexible band formed by curved links. pivotally secured together in end - to - end relationship.
Patent GB-295189-A (GB)
Title: Electric driving device for talking machines
IPC: G11B17/00
Filed: 1928-02-09
Abstract: 295,189. Wrangel, W. de. Aug. 18, 1927, [Convention date], Driving.-To avoid vibration and shock, the electric meter for driving the turntable of a gramophone through a belt and gearing is secured to the framing both above and below through the medium of damping devices which may be adjustable, and the governor is driven from the turntable spindle. As shown, plates 6, 6<1> projecting from the lower part of the motor 1 are held by bolts 4, between rubber blocks 5<1> and conical rubber washers 5<11>, and pins 7 at the upper part of the motor are embraced by rubber sleeves 8 projecting through a plate 9 adjustable by screws 27. The upper and lower supports shown may be reversed, and adjustable mounting plates may be provided for both sets of damping supports.
Patent GB-747486-A (GB)
Title: Improvements in the production of coloured thermoplastic masses for injection moulding
IPC: C08J3/205
Filed: 1953-02-13
Abstract: Coloured thermoplastic masses suitable for injection moulding are obtained by treating thermoplastic polymers, e.g. polystyrene, chlorinated polystyrene, polyethylene, polyacrylic and polymethacrylic acid esters, polyvinyl carbazole, polyvinyl acetals, polyvinyl and polyvinylide chlorides, in granular or bead form with a dispersion of a non-oil-soluble pigment in a readily volatile organic solvent which does not swell or dissolve the polymer and in which is dissolved a resin such as hydrogenated acetophenone - formaldehyde, cyclohexanone - formaldehyde, and colophony-maleic anhydride resins, colophony and copal resin, and finally removing the solvent. Solvents mentioned are methyl and ethyl alcohols.  In examples, granular polystyrene is coloured by stirring with a methanol solution of hydrogenated acetophenone-formaldehyde resin, in which are suspended iron oxide or titanium dioxide.  After evaporation of the solvents injection moulding yields uniformly coloured products.
Patent GB-849945-A (GB)
Title: Improvements in magnetically-controlled electric switching apparatus
Inventor: GANT EDWARD ERNEST
IPC: H01H29/14
Filed: 1958-02-07
Abstract: 849,945. Magnetic switches. AUTO CALL CO. Ltd. Feb. 4, 1959 [Feb. 7, 1958], No. 4139/58. Class 38 (5). In a magnetic switching device, which may be used in a burglar alarm, a biased contact actuating magnet mounted in one member is normally repelled against its bias by a magnet in another member, and relative movement between the member separates the magnets to permit contact operation. As shown, a plate 7 closes a cavity 6 in the lintel 2 of a swing door 1 and carries a bracket 8 pivotally supporting an arm 9. The latter carries a mercury switch 14 at one end and a permanent magnet 11 at the other, the weight of the magnet biasing the arm 9 to the dotted position in which the switch is open. The door carries a second permanent 3 which when the door is closed repels the magnet 11 to maintain the switch contacts closed. The magnets are both polarised in the direction of movement of the door so that the magnet 11 is attracted after the magnet 3 has moved a small amount.
Patent GB-136038-A (GB)
Title: Improvements in or relating to Moving Picture Apparatus.
Inventor: BOIXEDA DANIEL
IPC: G03B41/12
Filed: 1919-02-19
Abstract: 136,038. Boixeda, D. Feb. 19, 1919. Kinematograph apparatus of the type having a continuously-moving film and reciprocating objectives moving parallel to the film so as to produce stationary images. The film 1 passes in front of a prism or other reflecting system 2 adapted by partial transmission and partial reflexion to transmit the picture simultaneously through two parallel objectives 3, 4, which are reciprocated vertically by means of levers 14, and sliding frames 9, actuated in a downward direction by cams 7 and in an upward direction by cams 8 on two parallel shafts 20 which are driven through gears 24, 23, a shaft 22, worm gear 25, and a shaft 26 from the film-actuating drum 33. In order to adjust the stroke of the objectives, shafts 15 forming the fulcra of the levers 14 are adjustable in slots 15<1> by means of screws. In order to avoid flickering, the movements of the objectives 3, 4 and of shutter sectors 39, 40, rotated in opposite directions by bevel gears 36, 37, 38, are so timed that when one of the objectives is shut, (i.e. during its upward or return stroke), the other remains open, and the projection on the screen is never interrupted. Focusing is effected by moving the film-carrying frame by means of a screw 58 actuated from a turn-button 55 through worm gear 57. The picture is centred by adjusting the film by means of a tension roller 61 operated by a screw 62.
Patent GB-522994-A (GB)
Title: Improvements in permeability tuner
IPC: H03J1/10
Filed: 1938-12-19
Abstract: 522,994. Permeability tuners. JOHNSON LABORATORIES, Inc. Dec. 19, 1938, No. 4204/40. Convention date. Dec. 24, 1937. Divided out of 522,946. [Class 37] [Also in Group XXXV] In a permeability tuning unit for radio receivers comprising a number of units each consisting of a capacitator and an inductance provided with a movable magnetic core, the cores are simultaneously reciprocated in the coils by means of a flexible cable wrapped round a rotary tuning shaft and connected at its' ends to a common member linked to the cores. The unit comprises a metal casing 80 enclosing a number of shield cans 81 attached thereto by bolts 82. Each can contains a coil 85 mounted on a former 84 supported at one end on an insulated head 83, the other end passing through a central hole 84 in the can. The magnetic cores 87 slide in the formers 84 and are attached adjustably to a carriage 90 sliding on a rod 91. The carriage is reciprocated from the rotary shaft 92 operated by a tuning knob 95 through the medium of a spring tensioned cable 93 tightly wound round the shaft 92 and attached at its ends to the walls of the carriage 90 (Figs. 7 and 8 not shown). Means are provided (Figs. 9-12 not shown) for limiting the rotational movement of the tuning shaft 92. Specification 405,623 is referred to.
Patent GB-793793-A (GB)
Title: Improvements in or relating to the method of manufacturing electromagnetic delay lines
Inventor: BEVAN NOEL THOMAS JUSTIN
IPC: H01P9/00
Filed: 1955-02-11
Abstract: 793,793. Electromagnetic delay lines. ELLIOTT BROS. (LONDON), Ltd. May 11, 1956 [Feb. 11, 1955], No. 4208/55. Class 40 (8). A delay line for simulating the characteristics of a natural transmission line consists of a flexible sheet 1 of dielectric bearing a conductive pattern wrapped around a former 7 and a winding 8 of wire around the wrapped sheet. The former may be hollow or solid and may be made of an epoxy resin containing a dispersion of iron dust. The dielectric sheet may be made of paper or glass fibre cloth and the conductive pattern may be produced by known printing methods. The pattern extends completely around the circumference of the former and comprises equally-spaced strips 2 and lines 5 of electrically-isolated patches, the strips being connected to each other at one end. An unprinted extension of the dielectric sheet may be used to provide one or more thicknesses of insulation between the pattern and the winding. A further sheet 1a of dielectric having a conductive pattern 2a, 6a either on the inside or the outside may be wrapped around the winding 8. The conductive strips form one conductor of the delay line and the winding forms the other conductor.
Patent GB-750036-A (GB)
Title: Improvements in or relating to automatic thermal alarm systems
IPC: G08B17/06
Filed: 1954-02-12
Abstract: 750,036. Temperature alarms. TELEFONAKTIEBOLAGET L. M. ERICSSON. Feb. 12, 1954 [Feb. 14, 1953], No. 4263/54. Class 118(1) [Also in Groups XL(a) and XL(c)] A temperature-alarm circuit comprises two resistors, of which one at least is temperature-sensitive, joined in series and a gas-discharge-tube circuit connected in parallel with the resistors, the junction of the two resistors being connected to a point in the discharge tube circuit such that when the potential drop across one of the two resistors increases above a predetermined value a discharge occurs in the discharge-tube circuit whereby an alarm is actuated. Fig. 1 shows an arrangement comprising a plurality of temperaturesensitive circuits P1, P2 &c. connected in parallel across a pair of lines L1, L2 and connected in series with an alarm unit C. The circuits P1, P2 &c. each comprise two similarly-temperature-sensitive resistors T1, T2 and a cold-cathode discharge tube G, one of the resistors being heat-insulated as indicated by the rectangle H. The junction point of the resistors T1, T2 is connected to the control electrode of the discharge tube G so that, when the temperature rises suddenly, the resistance of T2 decreases more rapidly than that of T1, and the tube is fired due to the increase in potential at the junction point of the two resistors. The current flowing in the tube G operates the relay R to close the circuit of the alarm S1. Fig. 2 shows an alternative arrangement, wherein the coldcathode tube G is replaced by two series gas-filled diodes, the junction point of the two resistors being connected to the junction point of the two diodes. The circuit may also be modified by the replacement of one of the temperature-sensitive resistors by one not varying with temperature or one having a different temperature coefficient of variation, in which cases the heat insulation may be omitted. The resistance elements may be formed directly on the envelope of the cold-cathode triode shown in Fig. 1.
Patent GB-414764-A (GB)
Title: Improvements in mechanical frequency standards such as piezoelectric crystals
IPC: H03H9/09
Filed: 1933-02-13
Abstract: 414,764. Mechanical frequency standards. STANDARD TELEPHONES & CABLES, Ltd., Connaught House, Aldwych, London.-(Tournier, M. C. ; 46, Avenue de Breteuil, Paris.) Feb. 13, 1933, No. 4359. [Class 40 (v).] Relates to mechanical frequency standards such as piezo-electric crystals, and has for its object the elimination of spurious resonances. According to one aspect of the invention, the crystal 1, is freely supported and its nodal lines 2, 3, are determined, as by dusting the vibrating crystal with lycopodium powder. The crystal is then loaded along the nodal lines, e.g. by spots of paint, and /or supported by means of at least three sharp points, not in a straight line, chosen on the nodal lines. According to another aspect of the invention, the figure assumed by the lycopodium powder is photographed, and a hill-and-dale reproduction used to support the crystal. Other means for damping spurious vibrations include bevelling the edges of the crystal, (Figs. not shown) and damping the edges with paint or spongy rubber.
Patent GB-348568-A (GB)
Title: Improvements in or relating to gas operated machine guns and automatic small arms
IPC: F41A5/26
Filed: 1930-02-10
Abstract: 348,568. Automatic guns. VICKERSARMSTRONGS, Ltd., LARSSON, C. A., and HIGSON, P. R., Vickers House, Broadway, Westminster. Feb. 10, 1930, No. 4436. [Classes 92 (ii) and 119.] A gas-operated machine gun or automatic smallarm has the plug valve for controlling the tapped gases formed in two parts the main part B being adjustable within the gas-block A and carrying a subsidiary part C fitted within the main part and provided with a curved gas passage C<1>. The gasblock A is formed with the customary regulating valve turning in a bore A<x> and the plug valve B is formed with recesses B2, B3 as described in Specification 252,429, [Class 92 (ii), Ordnance, &c.].
Patent GB-1048021-A (GB)
Title: Electrical circuit arrangements
IPC: H05K1/18
Filed: 1963-02-04
Abstract: 1,048,021. Circuit assemblies. N. A. WALTER, J. F. SPILLING and W. E. PRETTY. April 30, 1964 [Feb. 4, 1963], No. 4441/63. Heading H1R. In a circuit assembly, Fig. 7, circuit elements, which may comprise solid or evaporated circuits or conventional components connected together by printed wiring, are located on one side of a flexible insulating strip having printed wiring or screening earth planes &c. on its reverse side; the strip is then folded concertinafashion, with pads of packing material between the folds. Additional interconnections may be provided on a printed-circuit board on which the flexible assembly is mounted, or by crossconnections (not shown) on the component side of the flexible strip. In Fig. 5 (not shown) an H.T. line on the reverse side of the flexible strip is separated by insulation from an earth plane to provide distributed capacitance for decoupling. The assembly may be disposed radialspoke fashion, Fig. 9 (not shown), in a cylindrical container to provide paths for cooling fluid; also cables may pass through the central duct. The assembly may constitute a plug and socket device.
Patent GB-402034-A (GB)
Title: Improvements in devices for operating the brakes of automobiles and like vehicles
IPC: B60T7/06
Filed: 1932-02-15
Abstract: 402,034. Brake transmitting-mechanism. VELITCHKO, B., 38, Rue des Perchamps, Paris. Feb. 15, 1932, No. 4443. Void [Abridged as open to inspection under Sect 91 of the Acts, Feb. 17, 1932]. [Class 103 (i).] A brake-operating device includes a member 7 interposed between a pedal 1 and a rocking- lever 10 controlling the brakes, said member 7 being articulated on the rocking lever and being provided with a roller 6 adapted to travel on a path or cam 5 when the pedal is actuated. The path may be such that full travel of the roller thereon is obtained during two-thirds of the full movement of the brake pedal and if desired the roller may be arrested at an intermediate point or points. A spring 8 connects the member 7 to the vehicle frame and the cam 5 may be separate from the pedal.
Patent GB-247956-A (GB)
Title: A process for the purification of condensation products produced from phenols and aldehydes
IPC: C08G8/28
Filed: 1926-02-16
Abstract: 247,956. Bakelite Ges. Feb. 17, 1925, [Convention date]. Phenol-aldehyde condensation products are purified by dissolving them, in the presence or absence of an organic solvent, in a quantity of alkali solution insufficient to form the resinate but sufficiont to neutralize free phenols, and reprecipitating the condensation product with water or with an aqueous solution containing a hydrotropic salt, e.g. sodium salicylate or a soap. The soaps used may be the alkali soaps, including ammonia soaps, of the liquid and solid fatty acids, the resinic acids, and the wax acids, and the soaps from sulphonated fats or sulphonated fatty acids or hydroxy-acids or halogen-fatty acids. A portion of the hydrotropic salt may be used in preparing the resin solutions before precipitation. Examples are given in which phenolformaldehyde resin is dissolved in varying amounts of alcohol and treated with soap and caustic soda solutions, the resins being precipitated by adding further portions of soap solution, usually more dilute. One example describes the use of water as a precipitant. The operations are conducted at the ordinary temperature or at 50-70‹ C. Specifications 131,112 and 220,043, [Class 95, Paints &c.], are referred to.
Patent GB-784424-A (GB)
Title: Manufacture of silicone oils
IPC: C08G77/00
Filed: 1955-02-15
Abstract: End-blocked polysiloxane oils are obtained by equilibrating linear or cyclic polysiloxanes in which the organic groups are hydrocarbon, with disiloxanes in which the organic groups are also hydrocarbon in the presence, as catalyst, of a cation exchanger which may be a synthetic resin or silicate or a cation exchanger based on carbon. The cation exchanger may also contain basic groups.  The catalyst may be removed by simple filtration.  In examples: (1) 500 gr. of a 33 cs. polydimethylsiloxane are heated under reflux at 140 DEG  C. for 4 hours with 6.5 gr. hexamethylsiloxane in the presence of 15 grams of a sulphonated carbon cation exchanger.  The product is an oil of 360 cs. viscosity.  Examples 2, 3 and 5 are similar but using different cation exchangers.  (4) 1450 gr. octamethylcyclotetrasiloxane and 1450 gr. hexamethyldisiloxane are refluxed at 111 DEG  C. for 4 hours in the presence of a neutral acid-activated bleaching earth and the product distilled to remove a distillate containing the trisiloxane. The residue has a viscosity of 30 cs. (6) 500 grams of a 1440 cs. polydimethylsiloxane is heated at 140 DEG  C. for 4 hours with 25 gr. of hexamethyldisiloxane in the presence of 15 gr. bleaching earth to give an oil of viscosity 45.5 cs.  The Specification refers to prior art in which the equilibrating reaction is carried out in the presence of a mineral acid absorbed on bleaching earth, and in which final traces of catalyst in the equilibrated reaction product are removed by treatment with bleaching earth.
Patent GB-177340-A (GB)
Title: Improvements relating to the propulsion of aircraft
IPC: B64D35/08
Filed: 1921-02-09
Abstract: 177,340. Fornaca, G. Feb. 9, 1921. Motor power plant.-Relates to aircraft motor power plant of the kind wherein a number of motors 1 are geared to a common shaft 3 through free-wheel clutches 6 so that motors falling below the necessary speed automatically disconnect, and consists in disposing the shafts of the side motors in radial symmetrical planes with respect to the plane passing through the main shaft and the shaft of the intermediate motor, the toothed wheels 4 of the motors that drive the toothed wheel 5 on the shaft 3 being looked to their shaft 2 by hand-operated clutches 10 when electric starter 11 is in operation.