baber/WOPTO huggingface dataset:
Patent GB-212675-A (GB)
Title: Improvements in and relating to systems of control for dynamo electric machines
IPC: B60L15/04
Filed: 1922-12-29
Abstract: 212,675. British Thomson-Houston Co., Ltd., (General Electric Co.). Dec. 29, 1922. Regenerative systems; controllers, interlocking. -Relates to series-parallel regenerative control' systems for a number of motors which are grouped in different ways for motoring and braking by manipulating a master-controller furnished with three handles and governing electromagnetically operated cylinder and cam switches for changing the grouping. The invention is described in relation to a system of twelve motors. Wher motoring, all the machines are first grouped ir series, Fig. 5, next in two parallel groups of six. Fig. 7, and finally either in three parallel groups of four, or in four parallel groups of three. Resistance is short-circuited in steps in each group. ing and is reinserted at the change to the next grouping. Further acceleration is provided for by tapping off a part of the field windings at the final step in each grouping. When regenerating, after a preliminary rheostatic braking step, the machines are arranged in two groups of six, twc machines in each group acting as exciters and being provided with stabilizing and balancing resistances as described in Specifications 186,953 and 180,456. In the first stage of regeneration, the two groups of machines are in series, Fig. 6, and in the second stage the groups are in parallel, Fig. 8. Variation of braking effect is obtained by varying armature resistance and field resistance in each stage. The circuit changes are effected by electromagnetic switches subject tc four master controllers comprising a main resis tance and series-parallel controller MC, a braking and field-tapping controller BC, a switch for selecting one of the alternative final groupings and a reversing switch. A handle MH, Figs. 15 and 16, operates the controller MC, a handle BH capable of movement in two planes operates the braking controller by its horizontal movement and the final grouping switch by its vertical movement, a handle RH operates the reversing switch. A system of mechanical interlocks, shown in dissected form in Fig. 27, provides for mutual interlocking action (i) between the main controller handle MH and the reverser handle RH, (ii) between the horizontal movement of the braking controller BH and the reverser, (iii) between both the horizontal and vertical movements of the braking controller and the main controller.
Patent GB-875037-A (GB)
Title: Improvements in or relating to means for a correct relative positioning of axially aligned components of an electrical switch
IPC: H01H19/56
Filed: 1958-11-04
Abstract: 875,037. Cam-operated switches; switch cases. NAIMER, H. L. Nov. 4, 1958 [Nov. 28, 1957], No. 35449/58. Class 38 (5). [Also n Group XXV] A switch comprises contact units 1, Fig. 1, and other components, e.g. a stepping gear 2, secured in line for actuation by a rotary spindle 4 by dowels 8a, 8b or 8c (see Group XXV) inserted tranverse to the switch axis in registering undercut grooves 6 in adjacent faces 5 of each pair of components. The component casings 10, Fig. 2, and the dowels may be moulded from a synthetic resin. Each contact unit comprises fixed contacts 18 with terminals 19 and movable contacts 16 urged against contacts 18 by springs 17. Contacts 16 are movable against the springs by a cam 12 on spindle 14 contacting rollers 13 on push-rods 14. The grooves 6 may extend radially of the components as shown, or substantially tangentially thereto.
Patent GB-820116-A (GB)
Title: Combination electric switch and variable resistor
Inventor: DAILY ARTHUR M
IPC: H01C10/36
Filed: 1955-12-09
Abstract: 820,116. Cam-operated switches. CHICAGO TELEPHONE SUPPLY CORPORATION. Dec. 9, 1955, No. 35483/55. Class 38 (5). [Also in Group XXXVI] In a combined rotary variable resistor and switch comprising a cylindrical housing with an operating shaft projecting axially from one end face thereof, the switch assembly is arranged within the casing in front of the resistor assembly, i.e. nearer to the face from which the shaft projects and comprises an arcuate metal strip 38 fixed at one end 38a to the front wall 11 of the assembly and having its other end overlying a fixed contact 37 attached to the front wall 11, the movable contact 38 being actuated by a projection 39 from a disc 27 mounted on the shaft 7. Rotation of the shaft 7 thus causes the projection 39 to engage the strip 38 over part of its travel so depressing it into engagement with the fixed contact 37. Terminals 41 of the switch project through the front wall of the assembly.
Patent GB-997966-A (GB)
Title: Improvements in or relating to fuel injectors
IPC: F02M69/04
Filed: 1961-10-02
Abstract: 997,966. Fuel injectors, reciprocating pumps. INTERNATIONAL HARVESTER CO. Oct. 2, 1961 [Dec. 1, 1960], No. 35500/61. Headings F1A and F1B. A fuel injector assembly comprises a hydraulically operable piston 43, Fig. 3, which delivers fuel at high pressure from a fuel ejection metering chamber 35 to an injector nozzle 74 and valve means operable by metering fluid pressure to admit a low pressure metered quantity of fuel to the ejection chamber and with release of metering fluid pressure to admit high pressure fluid to a chamber 37 to displace piston 43. Fuel injection system: As shown in Fig. 2 a primary pump 7 supplies fuel under pressure to a rotary-type metering pump 8. A by-pass line 13 including a pressure operated check valve 14 returns fuel at excess delivery pressure. During metering delivery periods fuel passes through line 18 to each injector 16 whilst during spill periods fuel passes through line 18a to the tank 3. A low-pressure fuel line 19 connected to the inlet line 12 of metering pump 8 and by-pass line 13 communicates through conduits 20 with each fuel injector 16. A high pressure pump 11 supplies each injector through highpressure inlet lines 22. Fuel injector operation: During spill periods pilot valve 28 is moved to stop 80 by spring 50 and residual fuel pressure in chamber 37 whilst servo piston 43 also moves to maintain the same relative position. During the metering stroke of pump 8 fuel is delivered through line 18 and passage 26 to the left-hand end of pilot valve 28 thereby displacing it to the right to a charge position opening ports A and C simultaneously and placing low-pressure line 20 in communication with annulus 35 and cavity 37a. With ports A and C open the high pressure in cavity 37a drops and piston 43, moves with the pilot valve 28 under the influence of tension spring 44, fuel being displaced from cavity 37a and transferred through port C into line 20 and through port A into annulus 35 in a quantity proportional to that metered by pump 8. When displacement of the pilot valve ceases, the piston 43 closes ports A and C and fuel trapped in cavity 37a prevents further movement of the piston 43. When pump 8 commences to spill, the pressure drop causes the valve piston to move to the left closing ports A and C and opening port B. Fluid from high-pressure line 22 and passage 32 is admitted through the passageway 54 into the cavity 37a where it moves pilot valve 28 rapidly to its stop 80 and causes piston 43 to displace fuel from annulus 35 through passages 57, 59, 76 into the nozzle chamber 70 urging nozzle plunger 66 against spring 63 and unseating valve 68 for injection. By varying the injection pressure the time of injection can be varied accordingly independently of the engine speed.
Patent GB-488101-A (GB)
Title: Improvements relating to heat-radiating tubes
IPC: F23C3/00
Filed: 1936-12-30
Abstract: 488,101. Gaseous - fuel furnaces. SURFACE COMBUSTION CORPORATION. Dec. 30, 1936, No. 35731. Convention date, Dec. 30, 1935. [Class 51 (i)] Heat-radiating combustion flues, particularly of the kind having a burner 12 at one end and suction means 13 at the other for inducing air for combustion at the burner end of the flue, have a section 10 of the flue of larger crosssectional area than a preceding section 28 and a succeeding section 30. The flue comprises sections of alternately smaller and larger crosssectional area. The flue is preferably of hairpin form, as shown, with a bend 31 and small and large sections 32 ... 36 beyond the bend. The sections 10, 33, 35 are of oblong shape in cross-section with the smaller cross-sectional dimension equal to the diameter of the sections of small cross-sectional area, Specification 452,204 is referred to.
Patent GB-618759-A (GB)
Title: Improvements in or relating to folding legs for articles of furniture
IPC: A47C7/00
Filed: 1946-12-04
Abstract: 618,759. Folding furniture underframes. SLUMBERLAND, Ltd., and MARTIN. D. H. C. Dec. 4, 1946, No. 35855. [Class 52 (iii)] In folding legs for divans, tables, &c. the upper end of the leg g is provided with a slot h through which passes a pin e so that the leg may be slid vertically and also pivoted thereon. A second pin or rod f is provided, parallel to the pin e and at a higher position, which forms an abutment against which a chamfered surface k of the leg engages when the leg is in its vertical position and slid upwardly on the pin e. This action forces the sides of the upper part of the leg adjacent to the frame, against the frame. As shown the leg and mounting are formed as a unit the pin e and rod f being carried by an angle bracket c which may be secured to the frame. In other forms of frame the bracket may be of channel form. The leg may also be provided with ledges l adapted to take the weight of the frame when the leg is in operative position. Locking means may also be provided comprising lugs n having slots adapted to engage headed studs q mounted on the bracket or frame. To fold the leg it is slid downwardly on the pin e and then pivoted thereon into a horizontal position.
Patent GB-1062170-A (GB)
Title: Turbomachine cooling system
Inventor: ERWIN JOHN RICHARD
IPC: F01D5/08
Filed: 1965-08-20
Abstract: 1,062,170. Turbine and compressor blades. GENERAL ELECTRIC CO. Aug. 20, 1965, No. 35920/65. Headings F1G and F1T. The rotor disc 10 of a gas turbine has airfoil blades 11 (which may be compressor blades or turbine buckets) disposed in a duct 12 through which hot gas flows to drive the disc. In order to cool the blades 11 each blade contains a multiplicity of internal sealed thermosiphons 16 receiving a liquid metal that bolls to conduct heat to the shank portion 15 of the blade. In order to cool the shank portions 15, these have, on one or both sides of the disc 10, turbine blades 17 comprising spiral path buckets 18, Figs.2, 3 (not shown). A casing 19 adjacent the shank portions has a nozzle 20 for admitting hot gaseous fluid, e.g. ram air, to the blades 17 which air gives up energy by driving the disc. The work done on the disc cools the air which is then recycled through the turbine blades 17 by another expanding nozzle 21 to perform further work on the disc. The air may be exhausted through conduit 23 into the engine exhaust nozzle. In a modified construction, Figs.4-6 (not shown) the turbine blades 17 for cooling the shank portions are formed by extensions of the airfoil blades 11 and the air coolant may be exhausted to the main gas flow in the duct 12 through apertures 25.
Patent GB-384455-A (GB)
Title: An improved process of producing sulphite cellulose
IPC: D21C3/26
Filed: 1931-12-30
Abstract: 384,455. Sulphite pulp digestion. PATENTAKTIEBOLAGET GRONDALRAMEN, 28, Jakobsbergsgatan, Stockholm. Dec. 30, 1931, No. 36000. Convention date, Jan. 9. [Class 96.] Wood chips &c. are partially digested with a solution of an alkali metal bisulphate or with a nearly neutral solution thereof and an alkali metal monosulphite without added sulphurous acid and digestion completed with the chips &c. submerged in liquor containing sufficient free SO2. The first solution may be preheated and circulated for one or more hours with indirect heating to 120 C. The liquor may be drawnoff until the digester is -full and the second solution introduced cold under pressure due to liberation of SO2 therefrom. Circulation and heat are again applied for 5-10 hours. The process is stated to save time and avoid the formation of thio-sulphates, sulphates, sulphuric acid, and sulphur, with reduced risk of " black digestion." In an example a 100 cu. metre digester is charged with 25 tons of wood chips and 3350 kgm. of NaHSO3 in 25 cu. metres of water circulated at 135 C. and 2À5 atmospheres for 5 hours, and then partly replaced by 60-65 cu. metres of liquor containing waste liquor and/or washing water.
Patent GB-725269-A (GB)
Title: Improvements in and relating to apparatus for playing board games
IPC: A63F3/00
Filed: 1953-12-29
Abstract: 725,269. Board games. VALENTINE, J. R. Dec. 29, 1953, No. 36023/53. Class 132(2). Apparatus for playing a board game of skill comprises a board as shown and eight playing pieces forming two sets of four pieces.
Patent GB-962660-A (GB)
Title: Improvements in and relating to electrical transformers with variable impedance
IPC: H01F29/10
Filed: 1959-10-26
Abstract: 962,660. Transformers. P. H. GREER, and UNIDARE Ltd. Oct. 25, 1960 [Oct. 26, 1959], No. 36134/59. Heading H1T. A variable impedance transformer has a laminated hollow rectangular core bearing the primary and secondary windings and has a movable magnetic shunt formed from laminations clamped together and bowed from the flat form to reduce vibration in the shunt when the transformer is energized. In one embodiment, Figs. 1, 2, and Figs. 3, 4, 5 (not shown), the shunt 4 moves in a direction perpendicular to the core 1 which is wound with multiple primary and secondary windings 2, 3. The shunt 4 has laminations generally parallel to those of the core and bolted between two curved non-magnetic plates 16, 17 which produce the necessary bowing. Plate 17 is threaded on a lead screw 10 running through an insulated bush 9 in a bridge-piece 5 having legs 6 between which pass insulated bolts 7 which act as guides passing through nylon bushes 21 in an extension of plate 16. The lead screw spindle 10 is held against a lower bush 9a in an insulated cross-piece 12 by a compression spring 14. Wear of thread in plate 17 is taken up by a compression spring 19 retained between the laminations and a nut 18 which is screwed down tightly on plate 16 and locked. The core 1 is insulated from bridge-pieces 5, 12 and bolts 7. A further embodiment, Figs. 6, 7, 8 (not shown), includes two shunts with lamination perpendicular to those of the core and which being screwed on oppositely directed threaded portions move away from each other as the control screw is rotated. The laminations are held by abutments in such a way that punching holes in them is avoided and that the necessary bowing is produced.
Patent GB-631885-A (GB)
Title: Improvements in or relating to collapsible cores or formers for use in the construction of wall panels and the like
IPC: B28B7/30
Filed: 1946-12-09
Abstract: 631,885. Collapsable cores for making hollow wall panels &c. REED & MALLICK, Ltd., and REED, W. E. Dec. 9, 1946, No. 36294. [Class 87 (ii)] A core comprises one or more pairs 7, 20, of oppositely-disposed tray members which are held spaced apart during the concretecasting operation by distance pieces 6. The pieces 6 are held between the longitudinal edges 4, 4a of the tray members by spreaders 8. Each tray member is stiffened by transverse members 5, 5a which are arcuateshaped to allow the pieces 6 to slide inwards when the spreaders 8 have been removed. When the pieces 6 slide inwards the upper tray members 7 collapse upon the lower tray members 20, whereupon the members may be removed. Channels 9 having groove-forming pieces 10 form the ends of the mould. The mould rests on a pallet 1. An insulation board 2 may be initially laid in the mould to form a facing on the panel.
Patent GB-405449-A (GB)
Title: Improvements in or relating to handbags, vanity cases and the like
IPC: A45C15/04
Filed: 1932-12-24
Abstract: 405,449. Handbags &c. ORTWEILER, S., 39, Great Arthur Street, Golden Lane, London. Dec. 24, 1932, No. 36608. [Classes 18 and 133.] A handbag, vanity case, &c. has a mirror detachably secured to it by means of a supporting member hinged to both the mirror and the bag. As shown, the member c, which is of spring wire, is carried in a tubular bearing b attached to the back of the mirror and has outwardly-turned ends d which are received in tubular lugs e mounted on the bag frame, the parts being made a friction fit in the bearings so that the mirror can be supported in any desired position. The part c thus affords a support for the mirror when removed from the bag. Alternatively the supporting member may be hingedly secured to the bag frame and detachable from the mirror, which may be furnished with a separate support.
Patent GB-843285-A (GB)
Title: Improvements in surveying equipment
IPC: G01C15/06
Filed: 1957-11-26
Abstract: 843,285. Surveying-apparatus. ZENTHON, E. R. Oct. 15, 1958 [Nov. 26, 1957], No. 36785/57. Class 97(2) A stadia staff comprises a main calibrated staff portion 1 and an auxiliary calibrated staff portion 9 connected to, and angularly adjustable with respect to,-the main portion 1. To steady the staff a staying strut 3 may be provided. The auxiliary portion 9 has one hole on either side of the pivot so that a peep-sight 15 may be inserted in one or the other to sight on the theodolite and thus ensure that portion 9 is at right angles to the line of sight of the theodolite.
Patent GB-731590-A (GB)
Title: Improvements in and relating to reversible split-phase motors
IPC: H02P23/00
Filed: 1953-04-28
Abstract: 731,590. Control of A.C. motors. GENERAL ELECTRIC CO. April 28, 1953 [May 7, 1952], No. 36797/54. Divided out of 731,570. Class 38 (3). Relates to the control of a single-phase motor having running winding 2, starting winding 3, and phase-splitting capacitor 5. When a reversing switch 22 engages contact 13, a circuit is completed through the coil of relay 9, speedresponsive switch 17, and the running winding. Relay 9 then closes to energize the starting winding so that the motor starts and accelerates. Opening of the switch 17 disconnects the starting winding, but the winding 2 remains energized since a circuit is maintained through coil 11 and contacts 83, 84. To reverse the motor, the switch 22 is engaged with contact 14 whereby the relay 9 is de-energized, and the starting winding is short-circuited through the capacitor 5 for braking. When the motor slows down to the cut-in speed of the switch 17, a circuit is established to the running winding 2 and the coil 12. The relay 10 then picks up to energize the starting winding in the reverse direction. Specification 697,597 is referred to.
Patent GB-344491-A (GB)
Title: Process for the preservation of natural and synthetic varieties of rubber
IPC: C08K5/13
Filed: 1929-12-02
Abstract: An antiager for natural or synthetic rubber consists of a substance of the formula <FORM:0344491/V/1> where R, R1 are similar or dissimilar benzene nuclei, of which at least one is substituted by one or more hydroxy or alkoxy groups and which may be further substituted and in which X and Y represent hydrogen or XY an alkylene residue.  As examples are given p-ethoxy diphenyl methane, 2-4-dibenzyl phenetol, 2-4-dihydroxy diphenyl methane, 1-1-di (p-hydroxyphenyl) cyclohexane, 1-1 di (p-hydroxy o-tolyl) cyclohexane, benzyl resorcin, and 1-1 (o-hydroxyphenyl) cyclohexane. The vulcanized product may be treated with a solution of the antiager.
Patent GB-989002-A (GB)
Title: A new or improved bearing material
Inventor: THOMAS PERCIVAL EDWARD
IPC: C08L63/00
Filed: 1960-10-27
Abstract: Bearing materials comprise polytetrafluoroethylene uniformly distributed throughout and firmly incorporated in a cured epoxy resin matrix.  The compositions may also comprise fillers and reinforcing agents, e.g. graphite, molybdenum disulphide, asbestos and metal powders.  The polytetrafluoroethylene may be in powder or granular form, or may be converted to a fibrous form by compacting and shearing forces either before or during admixture with the uncured epoxy resin.  Mixing may be effected in the presence of a lubricant, e.g. a hydrocarbon, which is subsequently removed.  The compositions may be used as unsupported bearings or may be applied by coating or laminating to backings, e.g. of metal, plastic or reinforced plastic, flexible fabric, rubber or synthetic rubber, to give backed bearings. Examples describe compositions comprising polytetrafluoroethylene, epoxy resins and curing agents therefor together with (2. (4), (14), (17) and (18) graphite, (5), (7), (8) and (15) molybdenum disulphide, (6) molybdenum disulphide and asbestos, (10) lead powder, (11) lead coated copper powder, (12) bronze powder, (13) molybdenum disulphide, asbestos and lead powder, (19) graphite and lead powder and (20) molybdenum disulphide and lead powder.  In Example (21) the epoxy resin is mixed with a liquid urethane polymer containing isocyanate groups.ALSO:Backed bearings may be made by applying to substrates particulate compositions comprising polytetrafluoroethylene and an epoxy resin and curing the compositions under pressure at elevated temperatures.  The compositions may also comprise fillers and reinforcing agents, e.g. graphite, molybdenum disulphide, asbestos and metal powders.  In examples, (16) mixtures of polytetrafluoroethylene powder and epoxy resins, together with (15) molybdenum disulphide are distributed over metal sheets and cured under heat and pressure.
Patent GB-1222464-A (GB)
Title: Arrangement for the actuation of reed contacts
IPC: H01H36/00
Filed: 1969-07-23
Abstract: 1,222,464. Movable magnet switches. INTERNATIONAL STANDARD ELECTRIC CORP. 23 July, 1969 [27 July, 1968], No. 36990/69. Heading HlN. Magnetic switches provided with movable magnet operated reed contact units have permanent magnets which are magnetized in a direction transverse to the axes of rotation of the magnets and have their greatest dimension in the direction of the rotational axis. Each contact unit 2 has its contact reeds influenced by separate rotatable permanent magnets 1 which may extend transverse to the contact unit (Fig. 4), parallel thereto (Fig. 5) or both transverse and parallel in a co-ordinate array (Fig. 6). In a parallel arrangement (Fig. 7, not shown) the contact units may extend at the comers of a square transverse to the plane thereof with the magnets of the centre of the square. The rotatable magnets may be provided with pole shoes co-operating with magnetic plates to retain the . magnets in index positions (Fig. 8, not shown).
Patent GB-1435082-A (GB)
Title: Security cards
IPC: B42D15/10
Filed: 1972-08-09
Abstract: 1435082 Credit cards and the like DEEP PRINT PROJECTS Ltd 11 Oct 1973 [9 Aug 1972] 37105/72 Heading B6A In a method of producing a validated credit card or the like, a first layer is provided with coded information thereon in the form of parallel lines, the information being in two parts composed of alternate lines, a second layer of transparent material is bonded to said first layer so that the information is at the interface, the signature of the intended holder is applied to a signature strip of said card, and then a screen having optical characteristics to decipher the coded information is embossed into the second layer thereby validating the card. The screen may be lenticular so that when the card is rocked from side to side the two parts of the information become legible. The first layer may be sandwiched between two layers which may bear additional embossed information.