baber/WOPTO huggingface dataset:
Patent GB-508347-A (GB)
Title: Improvements in or relating to magnet systems for flywheel magnetos
IPC: H02K21/22
Filed: 1938-10-01
Abstract: 508,347. Magnetos. BOSCH GES., R. Oct. 1, 1938, No. 28554. Convention date, Oct. 2, 1937. [Class 35] The magnet system of a flywheel magneto comprising ring-segment shapec bar magnets of a materia having a coercive force of more 'than 300 Oorstec circumferentially spaced or the flywheel with soft iror pole shoes between them consists of at least one group of three pole shoes b and two magnets a occupying part only of the circumference, the remaining part of which is taken up by one or more filling pieces c, which may be of iron, extending between the outer pole shoes of the group or groups. A casing d of nonmagnetic material is cast around the system. The armature e together with the interrupter and condenser are mounted on a fixed plate. A magneto is described having two groups of magnets and pole shoes disposed diametrically opposite one another, the end pole shoes being spaced by iron or other filling pieces. In this case the fixed plate carries two armatures with their associated interrupters and condensers.
Patent GB-190591-A (GB)
Title: A new or improved puzzle
IPC: A63F9/08
Filed: 1922-07-27
Abstract: 190,591. Wardle, E., Jones, B. R., Hayes, H., and Tunnicliffe, H. E., (trading as Wardle & Jones), and Webster. A. E. July 27, 1922. Fuzzles.-Relates to puzzles of the kind comprising a closed box formed with parts 4, 5, Fig. 3, the inner part 5 containing a ball &c. and having an opening in its top whereby the ball can be removed by flattening the inner part, and consists in constructing the box from one piece of material shaped as shown in Fig. 1, the parts 4<c> and 5<a> being gummed on their undersides so that they can be secured to the parts 4b and 4a respectively after the material has been bent along the dotted lines.
Patent GB-252622-A (GB)
Title: Improvements in the mounting and driving of electric generators on internal combustion engines
IPC: H02K7/108
Filed: 1925-11-13
Abstract: 252,622. Alvis Car & Engineering Co., Ltd., and Clarke, G. T. Smith-. Nov. 13, 1925. Dynamos, driving.-A dynamo is mounted concentrically around an extension of the crankshaft of an internal-combustion engine and is driven through a friction clutch from the extension. The dynamo casing is secured by a flange or by lugs 5 to the engine 6, and the armature shaft is in the form of a hollow sleeve 11 surrounding an extension 4 of the crankshaft. Keyways 12, 13 are formed in the interior surface of the armature shaft and on the exterior surface of the crankshaft, and in these keyways annular clutch discs engage. The clutch discs are pressed together by a plate 15, between which and a fixed abutment 16 is a coil spring 17. A nut 24 screwed on to the end of the crankshaft extension series to take the starting handle. By loosening the screws 19 and nuts 20, the dynamo may be removed, leaving the clutch plates on the crankshaft. An oil-tight running joint is provided at 21. In a modification the abutments 16, 18 screw into the inside surface of the armature shaft, and the annular space between the crankshaft and the armature shaft may be filled with lubricant. The clutch allows of slip upon the occurrence of violent accelerations of the engine.
Patent GB-982795-A (GB)
Title: Improvements in or relating to gyratory crushers
IPC: B02C2/04
Filed: 1961-08-08
Abstract: 982,795. Gyratory crushers. NORDBERG MANUFACTURING CO. Aug. 8, 1961 [Aug. 5, 1960; May 1, 1961], No. 28613/61. Heading B2A. [Also in Division F2] In a gyratory crusher having a crushing bowl supported by a tilting ring 5 provided with a conical steel surface 10 which opposes a complementary steel surface 4 on the main frame 1 of the crusher, one or each of the conical steel surfaces is provided with a weartaking liner or insert 20 of non-ferrous metallic material or of non-metallic material. The or each liner preferably comprises a number of conical segments. The non-ferrous material may be brass or bronze while the non-metallic material may be an epoxy resin, a neopreneimpregnated cotton or fabric provided with a hard wear-resistant surface, or a self-lubricating synthetic plastic material.
Patent GB-625443-A (GB)
Title: Improvements in or relating to hygroscopic units
IPC: G01N19/10
Filed: 1946-09-25
Abstract: 625,443. Hygrometers. SERDEX, Inc. Sept. 25, 1946, No. 28666. Convention date, Jan. 25. [Class 97 (iii)] [Also in Group XXXVIII] A hygroscopic membrane 22 of goldbeater's skin is supported between an outer ring 10 and an inner locking ring 20 so that the membrane is gripped securely under tension around its margin. A rod 38, mounted in a socket 34 of a boss 32 formed centrally on the casing 30 has at one end a rounded button 39 bearing against the centre of the membrane 22 so that the rod moves under the control of a spring 40 with changes of tension in the membrane 22. An arm 45 engaging a pin 44 in the rod 38 is pivoted at its upper end on a pin 46 secured in a boss 48 and is secured to a pointer 50. In a modification an eyelet in the centre of the membrane carries a rod on which is pivoted an arm co-operating with a pointer through a gear segment. In further modifications the movements of the rod 38 are used to vary the characteristics of an electrical recording or indicating circuit (see Group XXXVIII).
Patent GB-727512-A (GB)
Title: Improved radar reflector
Inventor: STEMP VERNON PETER
IPC: H01Q15/20
Filed: 1952-11-14
Abstract: 727,512. Radio reflectors. NATIONAL RESEARCH DEVELOPMENT CORPORATION. Sept. 1, 1953 [Nov. 14, 1952], No. 28749/52. Class 40 (7). A collapsible corner reflector comprises a main plate A with a pair of additional plates B and C hinged thereto on one or both sides diagonally and at right angles to each other. The plates B (in the case of the two sided arrangement shown) have central flanges D at right angles to their hinged edges and when they are moved to a position at right angles to the plate A the plates C are able to, be drawn up over them due to the slots F cut centrally in plates C. When plates C are also at right angles to the plate A they are hard against the flanges D and may be retained there by spring clips which engage slots close to the extremities of the plates. One open corner of the reflector may be provided with hinged flaps J having holes K which can be brought into alignment to form a socket to receive the tapered end L of a mounting adaptor whose enlarged end O can be fixed to the top of a mast or pole. Spring clips N on the adaptor hold the flaps J together and against the end O when assembly is complete and the pointed end M at the vertex of the adaptor fits into the extreme corner where all the reflector plates meet. Specification 658,915 is referred to.
Patent GB-639606-A (GB)
Title: Improvements relating to the production of fluorescent electric discharge lamps
IPC: C09K11/02
Filed: 1947-10-28
Abstract: 639,606. Electrostatic precipitation. BRITISH THOMSON-HOUSTON CO., Ltd., BLOOD, W. R., MOORE, J. W., and WELLS, R. S. Oct. 28, 1947, No. 28768. [Class 39 (i)] In the process of forming the luminescent layer of a fluorescent discharge lamp by the electrostatic precipitation of powdered luminescent material on to the surface of an insulating wall from a smoke of which the powder particles are ionized, at least that part of the wall remote from that on which the precipitation is to take place is maintained at the uniform potential of an electrode in contact therewith, through the intermediary of a conducting film of water to which has been added a wetting agent so as to enable it to flow uniformly. The conducting film may be formed on a tubular container such as for a fluorescent lamp by passing axially along the outer surface of the container a collar of spongy substance impregnated with the water to which the wetting agent has been added. Examples of suitable wetting agents are given.
Patent GB-319590-A (GB)
Title: Improvement in or relating to coating compositions
IPC: C09D125/06
Filed: 1929-09-23
Abstract: 319,590. Du Pont de Nemours & Co., E. I., (Assignees of Lawson, W. E.. and Sandborn, L. T.). Sept. 22, 1928, [Convention date]. Polymerized vinyl esters; polymerized styrene. -The polymerization of vinyl compounds is effected in presence of an inert solvent and a catalyst and at a temperature not exceeding 140‹ C. In the example, a solution of styrene in ethylbenzene containing some benzoyl peroxide is heated at 115-120‹ C. for five hours and steamdistilled, the residue of polymerized styrene being ground at ordinary temperature and dried at 65‹ C. A 25 per cent solution of this resin in a solvent mixture containing benzene, toluene, and xylene, is sprayed without cobwebbing. The Specification as open to inspection under Sect. 91 (3) (a) comprises also the following examples :-(1) a solution of vinyl acetate is heated to 85-100‹ C., the resin dissolved in butyl and ethyl acetates showing no tendency to cobwebbing; (2) vinyl acetate, butyl acetate and benzoyl peroxide are heated together; (3) vinyl acetate, di-n-butyl ether and benzoyl peroxide are heated together, the polymer in this case being insoluble in the reaction mixture: (4) vinyl acetate is polymerized in presence of benzene, chlorbenzene, ethylene dichloride, ethyl methyl ketone, ethyl acetate, or ethyl alcohol; (5) vinyl chloracetate, benzoyl peroxide and ethyl acetate are heated on a waterbath to start the reaction, and another mixture of these reagents is added slowly under reflux; (6) butyl acetate is substituted for ethyl acetate in example 6; (7) vinyl propionate and vinyl butyrate are substituted for vinyl chloracetate in example 6; (8) a mixture of vinyl acetate, vinyl chloracetate, butyl acetate, and benzoyl peroxide is heated on a waterbath. This subject-matter does not appear in the Specification as accepted.
Patent GB-756654-A (GB)
Title: Improvements in or relating to treatment of polymeric materials
IPC: C08J9/18
Filed: 1954-10-06
Abstract: Polymeric particles capable of being expanded to produce a cellular structure are produced by forming an aqueous suspension of a polymer of an ethylenically unsaturated hydrocarbon monomer, stabilized by a suspending agent, adding thereto a normally liquid expanding agent, and separating the polymer particles from the aqueous suspension when the agent has been integrated with the polymer particles.  Specified polymers are those from ethylene, styrene, nuclear dimethyl styrenes, isobutylenes, vinyl naphthalene, and specified copolymers are those of styrene with butadiene a -methyl styrene, isobutylene or dimethyl styrene or of butadiene with a -methyl styrene or isobutylene. Specified suspending agents are difficulty-soluble phosphates, e.g. the calcium and magnesium phosphates such as hydroxy apatite, zinc oxide, calcium carbonate, calcium fluorate, bentonite, talc, kaolin, kieselguhr, aluminium oxide, barium sulphate, magnesium carbonate or silicate and ferric carbonate, anionic surface-active agents, e.g. sodium dodecylbenzene sulphonate, may also be present.  Specified expanding agents are petroleum ethers, ligroins and hydrocarbons; the ethers may be mixed with mixed amounts of chloroform, carbon tetrachloride, methyl ethyl ketone or toluene.  The aqueous dispersions may be formed by adding the suspending agent to water and stirring in the polymer particles, or by polymerizing the liquid monomer in the presence of the dispersing agent and a catalyst such as benzoyl peroxide and tert.-butyl perbenzoate.  The polymer particles after removal from the aqueous suspension may be washed with dilute hydrochloric acid to remove the suspending agent, and dried to remove surface water. The particles may then be expanded by heating in contact with steam or water, or in a mould.  Specification 690,124 is referred to.
Patent GB-848165-A (GB)
Title: Position-responsive servo-control unit
IPC: F15B9/12
Filed: 1958-09-09
Abstract: 848,165. Steering motor vehicles. NEW YORK AIR BRAKE CO. Sept. 9, 1958 [Sept. 18, 1957], No. 28849/58. Class 79(5). [Also in Group XXIX] A servo-control unit comprises a double-acting motor 11, Fig. 8, which is supplied with fluid from a pump 29 under the control of a primary distributing valve 27 manually actuated e.g. by the linkage shown to which linkage the motor is also connected to provide follow-up. The primary valve 27 also acts as a pilot valve for a secondary distributing valve 41 which controls the supply of fluid to the motor 11 from a second pump 31 having a higher rate of flow than the pump 29. Only when the valve 27 is moved beyond a minimum range is the second valve 41 moved to connect the motor 11 to the pump 31. The primary and secondary valves 27, 41, Fig. 3, are each of the plunger open-centre type disclosed in Specification 576,309. The supply ports 42, 43 of each valves 27, 41 are normally connected to the discharge port 35 which leads back to the sump. The exhaust ports 45, 46 of valve 27 and 47, 48 of valve 41 are interconnected as shown by passages 49, 51. The pressure in the supply ports 42, 43 may be relieved into extensions 49a, 49b of the passage 49 via similar poppet relief valves 54 which each have an adjustable loading spring 62. The working ports 63a, 63b and 64a, 64b of the valves 27, 41 are interconnected by passages 63, 64 connected respectively to the lines 36, 37, Fig. 3, leading to the doubleacting motor 11. The plunger 27 has two bores separated by a central partition 65, each bore having a spring loaded poppet valve 68, 69 which controls ports 76 leading to ports 63a, 64a. The plunger 41 also has two bores separated by a central partition 81 and each bore has a poppet valve 82 or 83, loaded by a spring 86, 87 retained by a plug 88 or 89. The plug 89 co-operates with a centering unit 91-95. The working chambers 99, 101 at each end of the plunger 41 are connected to ports 102, 103 controlled by ports 104, 105 in the plunger 27. In operation, slight movement of the plunger 27 connects one or other of the passages 63, 64 to the pump 29 and theother one to exhaust so causing appropriate movement of the double-acting motor 11. The follow-up mechanism acts to restore the plunger 27 to its initial position. If the plunger 27 is moved beyond a narrow range i.e. if the rate of movement of wheel 16 is greater than that of the motor 11, the supply from port 42 passes via the appropriate check valve 68 or 69 and port 102 or 103 to chamber 99 or 101 so moving the plunger 41 and connecting the pump 31 to the motor 11 through one or other of the passages 63, 64 and lines 36, 37. Each passage 63, 64 is provided with a back pressure valve 106, Fig. 7 (not shown) which ensures that if the motor 11 is only lightly loaded when the plunger 27 is moved beyond its initial range, there is still sufficient back pressure to shift the plunger 41. To relieve shocks, two reversely set spring loaded relief valves Fig. 6 (not shown) permit throttled cross flow between passages 63, 64.
Patent GB-208127-A (GB)
Title: Electrical relay switch
IPC: H01H51/08
Filed: 1923-11-15
Abstract: 208,127. Dumont, G. Dec. 8, 1922, [Convention date]. Electromagnetic switches.-Successive depressions of a push button in the low-tension circuit of an electromagnet 4 cause the alternate closing and opening of contacts 10, 12 in a high tension circuit. The movable contact 12 is part of an L.shaped member 12, 13, which is pivoted at 14 to the frame and carries on a pivot 20 on its other arm 13, aT-shaped member 16. With the apparatus in the position shown, in the Figures. on depression of the push button, the armature 5 is attracted and the left hand of two arms 6 carried by the armature engages the arm 17 of the member 16 which in turn pushes the member 12, 13 into the circuit closed position. On releasing the push button, the member 16 falls back by gravity into a vertical position, which is slightly to the right of its original one. Accordingly when the push button is again depressed', the arm 18 of the member 16 will be engaged by the right hand arm 6, and the switch arm 12 will be moved back to its open position.
Patent GB-1467167-A (GB)
Title: Tractor cab
IPC: B60R21/13
Filed: 1975-05-22
Abstract: 1467167 Tractor cabs DAVID BROWN TRACTORS Ltd 22 May 1975 [29 June 1974] 28960/74 Heading B7B A tractor cab comprises mudguard assemblies 10, a floor unit 12 secured between the assemblies, a protective frame 11 mounted on the assemblies and a front frame 13 secured to the floor unit and the frame 11, the floor and mudguard assemblies being mounted on the tractor frame through resilient pads (37, 20) (Fig. 1, not shown) to reduce vibrational noise.
Patent GB-519900-A (GB)
Title: Process for polymerising vinyl esters
IPC: C08F18/04
Filed: 1938-10-07
Abstract: 519,900. Vinyl polymerisation products. CARBIDE & CARBON CHEMICALS CORPORATION. Oct. 7, 1938, No. 29073. Convention date, Oct. 29, 1937. [Class 2 (iii)] Highly polymerised vinyl esters are prepared by polymerising vinyl esters, soluble or dispersible in methyl acetate, in the presence of methyl acetate, the monomeric and low polymeric vinyl ester being removed by distillation leaving the highly polmeric ester in solution. A solution of the polymer in methanol may be obtained by adding methanol to the methyl acetate solution and distilling the methyl acetate therefrom, the distillation, if desired, serving also' to remove the monomers and low polymers. In examples vinyl acetate is polymerised in the presence of methyl acetate using as catalyst diacetyl or benzoyl peroxide. Other esters such as the butyrate or propionate may be similarly polymerised.
Patent GB-794567-A (GB)
Title: Improvements in feeding bottles
Inventor: PORTHOUSE CYRIL ROUTLEDGE
IPC: A61J11/02
Filed: 1954-10-08
Abstract: 794,567. Feeding-bottles; venting-apparatus. EVENFLO INTERNATIONAL N.V. Oct. 8, 1954, No. 29078/54. Classes 21 and 66. A feeding bottle 11 has a teat 21 with a lower radial flange 27 that is adapted to be pressed against the rim 14 of the bottle by a screw-cap 40, the flange 27 having axially extending vent holes 29, 30 arranged so that the outer edge portion of each vent hole is tangential to the inner face of the bottle rim 14 ; the surface on the underside of the nipple flange 27 immediately adjacent the vent holes 29, 30 being flush with the contiguous surface on the underside of the nipple flange that engages the bottle rim 14. The flange 27 has an annular portion 28 of reduced thickness near the main body 26 of the teat 21. As liquid is drawn from the bottle, the resultant lowering of the internal pressure causes the flange 27 to flex inwardly to move the upper ends of the vent holes 29, 30 away from the screw-cap 40 and so allow air to enter through the vent holes 29, 30 via the top portion 41 of the cap 40 and clearance channels between the cap 40 and the nipple 21. When the pressures are equalized the flange 27 returns to its normal position against the under surface of the cap 40 thereby sealing the holes 29, 30. In a modification, the rim 14 of the bottle may have upstanding, radially extending, projections to form additional vent passages between the flange 27 and the rim 14 of the bottle. By adjusting the degree to which the cap 40 is tightened, the cross-sectional areas of the various vent holes and passages may be varied. During storage or transport the nipple 21, Fig. 5, is inverted and covered by a seal disc 200 held in place by the screw-cap 40. When the bottle is to be used, the seal disc 200 may be used to push the nipple into position through the screw-cap.
Patent GB-356513-A (GB)
Title: Improvements in or relating to propelling pencils
IPC: B43K21/02
Filed: 1930-09-30
Abstract: 356,513. Pencil holders. LIVSEY, C., 13, Hope Street, Liverpool. Sept. 30, 1930, No. 29238. [Class 146 (iii).] The propelling-mechanism of a pencil holder is held in position in the barrel by means of a spring sleeve k which lies between the inner wall of the barrel b and the casing j of the mechanism. The sleeve is preferably formed from a strip of metal rolled to form a split tube, in the wall of which is provided a number of spaced longitudinal slots leaving strips o which are slightly bent inwardly and outwardly to engage frictionally the mechanism or the barrel. A shoulder may be formed on the wall of the barrel to maintain the spring sleeve in position.
Patent GB-1082966-A (GB)
Title: Production of foamable vinylaromatic polymers
Inventor: BURT PATRICK VIVIAN
IPC: C08J9/22
Filed: 1963-07-24
Abstract: In a process for the production of a foamable vinyl aromatic polymer having a shortened cooling time on moulding, particles of the polymer containing a volatile blowing agent are subjected to a quenching operation in which they are cooled through at least 10 DEG  C. at a rate of not less than 2 DEG  C. per minute from an initial temperature of 60 DEG  C. or higher.  The vinyl aromatic polymer can be polystyrene, a toughened polystyrene, a polymer of a substituted styrene or a copolymer of a styrene with a minor proportion of an ethylenic unsaturated monomer.  Quenching can be brought about by the addition of a cold liquid, by cooling jackets or by a current of gas.
Patent GB-974444-A (GB)
Title: Improvements in or relating to electric arc furnaces
Inventor: MCGEE LAWRENCE
IPC: H05B7/00
Filed: 1962-07-31
Abstract: 974,444. Supply systems for electric arc furnaces. BRITISH IRON & STEEL RESEARCH ASSOCIATION. July 23, 1963 [July 31, 1962], No. 29344/62. Heading H2H. To reduce the reactance of the electrode system of a direct arc furnace and to prevent strong electromagnetic fields being produced therein, the electrodes 12 ... 17 are arranged in pairs which are connected to a three-phase supply transformer so that the electrodes of each pair carry equal and opposite currents, and the two electrode groups 13, 14, 17 and 12, 15, 16 have opposite phase rotation. In Fig. 1 a double star connection is used, but double delta may be employed, Fig. 2 (not shown), and the three-phase transformer may be replaced by three single-phase ones. The position of each electrode may be automatically adjusted by servo systems, one for each pair of electrodes and comprising a D.C. motor whose field is connected to the rectified sum of the two electrode currents or voltages, and whose armature is fed from the rectified difference between the two electrode currents. Each electrode pair is supported by a mast whose position is controlled by another servo system. Alternatively six masts may be provided, one for each electrode and having its own servo system linked to the other of the electrode pair. This arrangement facilitates the use of only three of the electrodes during certain operating periods.
Patent GB-1499835-A (GB)
Title: Locks
IPC: E05B9/04
Filed: 1976-06-24
Abstract: 1499835 Mould J LEGGE & CO Ltd 24 June 1976 [12 July 1975] 29382/7S Heading B5A [Also in Division E2] A die for moulding synthetic plastic into a lock body comprises parts 17 and 20 for forming the outer surfaces of the body, a core 21 to define a cylindrical passageway and draw cores 19 in passages 18 of part 17 to provide channels transverse to the passageway. Recesses 25 are provided in the core so that the moulded channels may communicate with the cylindrical passageway.