baber/WOPTO huggingface dataset:
Patent GB-315589-A (GB)
Title: Display apparatus
IPC: G09F11/34
Filed: 1928-08-02
Abstract: 315,589. McDonald, L. R. Aug. 2, 1928. Boards and like elements, travelling. - In apparatus comprising independent placards 22 disposed vertically in two packs and moved in a circuit so that end placards slide laterally and the packs move bodily transversely, the sliding mechanism comprises a rack 39 engaged by a rotating pinion 37. In Fig. 6 the rack is shown approaching one end of its travel in an oil-containing channel 60. An incline 61 forces the outer end of the rack to the opposite side of the channel, and the pinion 37 is kept in engagement with the rack while rounding its end by a shoulder 41. Slides 47, 48 carrying pivoted dogs 51, 52 which engage the placard supports 20 are connected to the rack 39 by links 45, 46. The packs are pushed transversely by pressers 68 which are moved by flanges 43 on the rack acting on pins 65 on levers 63, 64. The pressers are provided with inclines 69 so as to be returned by, and to come outside of, the laterally moving placard. Springs 25 force the tops of the placards forwardly so that the front one is upright. The worm gear 32, 33 between the motor 30 and the pinion 37 is surrounded by an oil container 36. Adjustable reflector lamps are arranged over both faces of the apparatus.
Patent GB-440628-A (GB)
Title: Tension device for driving belts or bands
IPC: F16H7/12
Filed: 1935-08-08
Abstract: 440,628. Tensioning driving-bands. JACKSON, L. MELLERSH-, 28, Southampton Buildings, Chancery Lane, London.-(Smith, W. H.; Cornwall, New York, U.S.A.) Aug. 8, 1935, No. 22425. [Class 80 (i)] [See also Group IX] In tensioning devices more particularly for the driving-bands 4 of the spindles 2 of a twisting - machine, the tension is applied by pulleys 12 supported on pivoted yokes 16 and pressed into action by springs 27, or other yielding means. When a band 4 is moved from the live pulley 1 to a dead pulley 5, or vice versa, by the fork 6, a lug 7 on the flange of the pulley 1 moves the band with a sudden flexure so that the band jerks the tension pulleys into alignment with its new position. Preferably the pulley 12 has sidewise play in its bearings, to allow for the bodily movement of that part of the band which it engages.
Patent GB-478602-A (GB)
Title: Improvements in or relating to electrical condensers
IPC: H01G4/08
Filed: 1936-08-14
Abstract: 478,602. Condensers. SPORING, P. A. Aug. 14, 1936, No. 22477. [Class 37] Disc-form condensers have the ceramic dielectric 1 of non-uniform thickness substantially less at the edges than at the centre. Bosses 2 may be provided to facilitate the attachment of connection wires 4 to the metallic coatings 3. Adjustment of capacity is effected by grinding away or otherwise removing portions of the coatings.
Patent GB-426758-A (GB)
Title: Improvements in or relating to a method for producing a concentrate of chrome-ores
IPC: B03D1/001
Filed: 1934-08-01
Abstract: Oxidized ores of chromium, e.g. chrome-iron ores, are concentrated by treating with a complex heteropolyacid and then subjecting the treated ore to froth-flotation.  Acids that may be used include phosphomolybdic acids, phosphotungstic acids, arsenomolybdic acids, arsenotungstic acids, phosphovanadic acids, phosphouranic acids, phosphosulphuric acids, and arsenosulphuric acids.  The treatment is effected in the presence of water with or without caustic soda.  The Specification as open to inspection under Sect. 91 describes the froth flotation of a chrome-iron ore which has been treated with phosphomolybdic or phosphotungstic acid using as flotation agents sodium palmitate, and pine oil with or without water glass, and of a chrome-iron ore which has been treated with phosphotungstic acid and caustic soda using as flotation agents oleic acid, aerofloat, tannic acid, and terpineol.  This subject-matter does not appear in the Specification as accepted.
Patent GB-1270723-A (GB)
Title: Alkanolamine derivatives
Inventor: LEIGH THOMAS
IPC: A61K31/205
Filed: 1969-05-02
Abstract: 1,270,723. #-Adrenergic blocking medicines. IMPERIAL CHEMICAL INDUSTRIES Ltd. 20 Feb., 1970 [2 May, 1969], No. 22513/69. Heading A5B. [Also in Division C2] Pharmaceutical compositions comprise (-)- 1 - (4 - acetamidophenoxy) - 3 - isopropylamino - 2 - propanol or a salt thereof in association with a carrier. The compositions may also contain one or more further active ingredients selected from sedatives (e.g. phenobarbitone, meprobamate, chlorpromazine), vasodilators (e.g. glyceryl trinitrate, pentaerythritol tetranitrate, isosorbide dinitrate), diuretics (e.g. chlorothiazide), hypotensive agents e.g. reserpine, bethanidine, guanethidine), myocardial depressants (e.g. quinidine), agents used in the treatment of Parkinsonism (e.g. benzhexol) and sympathomimetic bronchodilators (e.g. isoprenaline, orciprenaline, adrenaline, ephedrine). The primary active ingredients possess selective #-adrenergic blocking activity.
Patent GB-1262644-A (GB)
Title: Improvements relating to roller conveyors
Inventor: FITZGERALD LESLIE
IPC: B65G47/29
Filed: 1968-05-13
Abstract: 1,262,644. Roller. conveyers. MARSHALL HANDLING EQUIPMENT Ltd. 2 May, 1969 [13 May, 1968], No. 22570/68. Heading B8A.  Driving rollers 12 are engageable with conveying rollers 10 of a roller conveyer and are driven by an endless belt 13, the rollers 12 being arranged as units, each comprising a frame 16, which are displaceable lengthwise of the conveyer path, to bring the rollers 12 on to and out of driving engagement with the conveying rollers 10. Some of the rollers 10 may be idlers. Each unit is biased to the left by a spring 17 and 15 controlled by a trip device 18 which is connected by a link 22 to the downstream end of its unit. At the discharge end of the conveyer, Fig. 3, the four conveying rollers 10 are constantly driven and the trip device 18 controlling the penultimate roller unit is provided with a skid plate 19<SP>1</SP> in place of a roller. Articles are propelled from right to left and when an article operates a trip device 18, drive to the preceding unit is disengaged, the following article is halted and the articles are spaced apart. Removal of an article from the final unit permits drive to the penultimate unit to be re-engaged. The conveyer may be driven in the reverse direction, the links 22 being modified to allow the device 18 to be inoperative. In place of the devices 18, electrical contacts or light-beam arrangements may be used to detect the conveyed articles. One or more of the units may be moved to the non-driving position by an operator. The conveying path may be arcuate, the rollers 10 then being slightly tapered.
Patent GB-810328-A (GB)
Title: Improvements in or relating to mechanism for actuating vehicular brakes
Inventor: JULIER BERTRAM HARVEY
IPC: B60T13/58
Filed: 1956-07-20
Abstract: 810,328. Fluid pressure brakes. TALCO ENGINEERING CO. July 20, 1956, No. 22621/56. Class 103 (1). [Also in Group XXI] In an emergency brake applying means for vehicles fitted with fluid-pressure brake applying means, an auxiliary piston and cylinder unit, normally inactive when the normal fluid pressure means is operated, is a gas pressure generating means. Inserted in an otherwise conventional vehicular air brake system is an auxiliary unit comprising a cylinder 23 within which is disposed a piston rod 25 carrying a piston 26; the piston rod being attached to the actuating arm 11 of the brake actuating cam shaft 10 and the head 24 of the cylinder 23 being secured to the piston rod 12 of a conventional air-operated diaphragm brake cylinder 13 secured to the vehicle axle 22. An electrically or mechanically operated gas generating cartridge mechanism 32 is supported by head 24 of cylinder 23 as shown in Fig. 3 such that when, on failure of the normal air braking system, a switch is closed in the driver's cab, the cartridge 35 burns the fuel charge 36 and the gas pressure resulting from the combustion enters the forward end of cylinder head 24 via passage 43 to drive piston 25 to the right, as shown in Figs. 2 and 3, to actuate the brakes. Various modifications are described and illustrated in the Specification including arrangements in which, for instance, the auxiliary unit may be formed separately from the normal linkage mechanism and in which the auxiliary unit operates the brake-actuating arm under tension instead of under compression as shown in Fig. 2. Various forms of gas-generating mechanism are described in the Specification. An automatic auxiliary brake operating means is also described in the Specification suitable for a tractor-trailer combination such that the brakes are automatically applied should the trailer become detached from the tractor.
Patent GB-321411-A (GB)
Title: Improvements in or relating to the treatment of peat
IPC: C10F5/04
Filed: 1928-08-04
Abstract: 321,411. Springborn, E. von. Aug. 4, 1928. Peat, preparing.-A process for treating peat consists in cutting it into thin layers transversely of the general run of the peat fibre, forcing the cut peat through apertured plates on to a movable carrier when it is dried, and subsequently carbonizing it in the minimum amount of evolved steam and gases which are continuously withdrawn from the carbonizing chamber. Specifications 26191/96 and 25962/13 are referred to.
Patent GB-657701-A (GB)
Title: Improved methods of gain control in audio frequency amplifiers
IPC: H03G3/06
Filed: 1948-08-27
Abstract: 657,701. Automatic volume control. SNEATH, O. B., and KNIGHT, E. A. Aug. 27, 1948, No. 22715. [Class 40 (iv)] [Also in Group XL (c)] In an amplifying system incorporating volume compression and also a manual gain control, a voltage derived from the rectified output of a later stage is applied to one grid of an earlier stage and a manually controlled bias is applied to another grid and/or the anode of the earlier stage. In the deaf-aid circuit, Fig. 3, for amplifying sounds picked up by the piezo-electric microphone M, the rectified output of the stage V 6  is applied to the control grid of the first stage V 4  for effecting volume compression, and the manual control is effected by the rheostat R 13  which changes the potentials of the anodes and screen grids of valves V 4 , V 5 . The circuit shown is suitable for use with low high-tension voltages, e.g. 20V. In a modification, Fig. 1 (not shown), the anode voltage of a single stage is derived from a manually controlled tapping on a resistance across the H.T. supply. In a further modification, Fig. 2 (not shown), the anode and screen potentials are obtained from a tapping on the screen grid resistor of the subsequent stage.
Patent GB-227438-A (GB)
Abstract: 227,438. National Cash Register Co., (Assignees of Goldberg, M. M.). Jan. 10, 1924, [Convention date]. Systems for continuouscurrent motors. - In a motor - operated cash register, adapted to work under varying loads, the speed of the motor is automatically rendered constant despite the changes in load. The invention is described as applied to a known type of voucher-issuing machine wherein the change from issuing to non-issuing is brought about by the endwise sliding of a shaft 118 connected with cams &c. mounted on a parallel shaft and controlling the operation of the voucher feeding, impression, perforating, severing, and ejecting mechanisms. In one arrangement, the pivoted switch arm 177 connected with the pin 137 on the shaft 118 is positioned as shown when the voucher-issue is required and in consequence the full voltage of the supply is applied to the motor 183. When the shaft is slid forward to disable the voucher-issuing mechanisms, however, the switch is closed to introduce a shunt circuit 188 for the armature and thereby nullify the effect of the decreased load by diminishing the voltage applied and increasing the field. In another arrangement, the switch operates reversely to this so as to cut out a resistance in series with the motor when the machine is working under full load.
Patent GB-404391-A (GB)
Title: Improvements in coin-freed vending machines
IPC: G07F11/10
Filed: 1932-08-15
Abstract: 404,391. Coin-freed article-delivery apparatus. SALTER & CO., Ltd., G., and CALDWELL, T. F., 144, High Street, West Bromwich. Aug. 15, 1932, No. 22782. [Class 27.] Articles stored in piles; coin action, weight and multiple-coin.-In a coin-freed vending- machine, a wheel or angularly-movable member 5, Fig. 6, is turned by a coin or coins to bring a projection or abutment fixed or attached to it, into the path of a part on or connected with a retaining catch, which normally holds the delivery drawer locked, so that the action of pulling out the drawer causes the catch to be moved to inoperative position and allows the drawer to be pulled out sufficiently to deliver an article. In the application to a machine for selling cigarette packets of two different sizes arranged in piles above two delivery drawers 2, 4, an underside view of which is shown in Fig. 10, the wheel 5 is provided on opposite faces with projections 7, 7d to cooperate respectively with retaining catches 8, 8a for the drawers 4, 2. The projection 7 is brought into action by the insertion of two pennies and the projection 7a by the insertion of four. The coins dropping down a shoot 6 to a money-box engage curved recesses 19, Fig. 6, on the wheel 5 and turn this through a definite angular distance for each coin. The wheel is held in advanced position after the passage of a coin by a pawl 23 engaging ratchet teeth 24, and is located by a finger 25 on the pawl engaging lateral projections 26 on the wheel. After insertion of two coins, the projection 7 is in the path of an inclined face 15 on a lateral extension of the catch 8 which is pivoted at 9 to the drawer 4 and is normally held by a spring 13 in alignment with a shoulder 10 on a fixed drawer guide 11. When the drawer is pulled out, the projection 7 moves aside the catch to releasing position. The projection 7a acts similarly, after the insertion of four coins, to release the drawer 2. If three coins are inserted, an L-shaped extension of the pin 7 lies in front of the catch 8 and enables the drawer 4 to be withdrawn. If more than four coins are inserted at a time, the fifth and succeeding coins fall past the wheel 5 without jamming. The pawl 23 is raised to allow the wheel 5 to return to its initial position, after a drawer is pulled out, by a lateral extension 30 on each of the catches 8, 8a engaging under the lower arm 28, Fig. 16, of a bell-crank lever, the upper arm 29 of which engages a pin 31 on the pawl. Fraud, preventing.-Actuation of the wheel 5 by tilting the machine is prevented by a swing- ing plate 35, Fig. 6, pivoted at 36 to the shoot 6 and having a shoulder 37 to engage beneath a projection 38 on the wheel. Pawls 39 engaging racks 40, Fig. 10, ensure a full stroke of each drawer. One drawer is prevented from being pulled out, when the other is actuated, by a sliding transverse rod, which is pressed by the moved drawer into engagement with a recess on the other.
Patent GB-771425-A (GB)
Title: Process for the production of substituted 2-imino thiazolidines
Filed: 1955-08-08
Abstract: Substituted thiazolidines of the formula <FORM:0771425/IV(b)/1> where R is an aromatic radical and R1 and R2 are alkyl are prepared by heating aminoalcohols of the formula R-CHOH-CHR1-NHR2 (or salts thereof) with thiourea or ammonium thiocyanate at 180-250 DEG  C. The product is obtained as thiocyanate salt from which the free base may be produced by treatment with alkali hydroxide.  Examples are given of the process where R is phenyl and R1 and R2 are methyl. Specification 690,238 is referred to.
Patent GB-277646-A (GB)
Title: Improvements relating to the driving of constant speed clearing apparatus for carding drums
IPC: D01G15/36
Filed: 1927-08-31
Abstract: 277,646. Weinbrenner, J. Sept. 14, 1926, [Convention date]. Carding-engines.-The stripping-brush d, Fig. 1, is driven from the pulley b on the main cylinder shaft a through a countershaft e carrying two pulleys f, g. The driving-belts h, mare tensioned by jockey pulleys l, i and n respectively provided with weights k, o. The axial reciprocation of the stripping-brush is obtained from a double pulley q, r, Fig. 3. The part q is fixed on the shaft and the part r, which is of slightly larger diameter, is loose on the shaft and carries a boss with a cam groove t, engaged by a pin u on the part q. The. belt m drives both parts of the double pulley.
Patent GB-787687-A (GB)
Title: Sprinkler head for use in underground lawn sprinkling systems
IPC: A01G25/00
Filed: 1955-08-09
Abstract: 787,687. Agricultural irrigation. LEADBETTER, G. E. Aug. 9, 1955 [Aug. 24, 1954], No. 22968/55. Class 33. [Also in Group XXIX]  An underground sprinkler system comprises a buried water circulating pipe 15 in which, at each sprinkling location, a T-connection 16 is inserted to which a sprinkler head is coupled. The head includes a tubular extension 10, a flat annular apron 12 which lies level with the ground and a curved perforated closure 13. The pipe and heads &c. are of thermoplastic material, e.g. polyethylene.
Patent GB-1089114-A (GB)
Title: Preparation of polycarbonates
IPC: C08G64/30
Filed: 1964-09-25
Abstract: Polycarbonates may be prepared by polymerizing a saturated cyclic carbonate in the presence of a catalyst of formula MR3 where M is a Group IIIb element and R is a hydrocarbyloxy radical.  The carbonate may contain a carbonate ring of at least 6 carbon atoms all of which are carbon or oxygen and which has no more than 4 substituents. Compounds specified are 4,4-dimethyl-2,6-dioxacyclo-hexanone and 3,4,5-trimethyl - 2,6 - dioxacyclohexanone. A copolymer may be formed by mixing this with a lactone, e.g. epsilon caprolactone. The catalyst, e.g. aluminium triisopropoxide, may be supplemented by 1-100 mole per cent of a zinc halide, e.g. ZnCl2.  The reaction may be at 0-225 DEG  C. under a nitrogen atmosphere and the product may have a M.W. of at least 10,000.
Patent GB-402715-A (GB)
Title: Improvements in wringer cabinets
IPC: D06F45/00
Filed: 1932-06-14
Abstract: 402,715. Wringer cabinets. ACME WRINGERS, Ltd., and BURT, J. W., 97, David Street, Bridgeton, Glasgow. June 14, 1932, No. 23074/33. Divided on 399,613. [Class 138 (ii).] A cabinet for supporting a wringer 8 in the vertical operative position or in the horizontal inoperative position is provided with extensible shelves which can be positioned to support a pair of wash-tubs, baskets &c. one on each side below the wringer and are collapsable for accommodation partly within the cabinet. The cabinet comprises three walls 1, 2, 3, the back being formed by a shelf 16 pivoted at 23 and provided with hooks 24. The shelf may be raised about its pivots to a horizontal position, legs pivoted beneath the shelf being let down to assist in supporting it. The space between the inner edge of the shelf and the back face of the front panel of the cabinet may be filled by another shelf which rests on the cross-bars and framework bars of the cabinet. The front wall of the cabinet is formed by a lower fixed section and an upper section pivoted thereto so that it may be swung downwardly ; the shelf 16 may then be removed from its pivots and hooked on to the folded sections at the front of the cabinet. The framework of the cabinet is stayed by V-shaped braces forming a recess to receive a dolly tub standing on the floor as in Specification 313,752, [Class 138 (ii), Washing, mangling, &c.].
Patent GB-270150-A (GB)
Title: Improvements in or relating to processes for treating jute fibres
IPC: D06M13/02
Filed: 1926-09-18
Abstract: 270,150. Peace, G., and Carnegie, A. L. Sept. 18, 1926. Lubricants for fibres. - A stable emulsion or colloid dispersion of mineral oil and water for treating jute is prepared by pulverizing the materials in the presence of a small amount of a stabilizing or a dispersing agent. e.g. sodium oleate. The emulsion may contain from 1 to 90 per cent of oil, and may be produced in a high speed disintegrating apparatus, such as a colloid mill, or by spraying the materials under pressure on to a rotating disc. 0.1 per cent of dispersator is sufficient. The emulsion contains very fine particles of from <1>/250,000 to <1>/2,500,000 of an inch diameter; it may be diluted with water.
Patent GB-232880-A (GB)
Abstract: 232,880. Engelbert, W. Dec. 1, 1924. Catch gear of mine-cage type.-Flat springs h, Fig. 2, or other resilient means, are placed between the inclined surface of the wedge e and the guide g attached to the top of the cage. Each guide is pivotally connected to the cage at it's lower end i and at its upper end is acted upon by a strong spring j so that it has only a limited movement. Each wedge is connected by a cable c to a weight a which drops into a recept'a.cle b when the hoisting rope breaks. A compressed spring thereupon forces the wedge upwardly between the guide g and the fixed cage guide f.
Patent GB-197251-A (GB)
Title: Improvements in and relating to automobile tops
IPC: B62D25/06
Filed: 1922-08-28
Abstract: 197,251. Blunt, G. T. Aug. 28, 1922. Hoods; bodies.-A device for preventing the roof 10 of an automobile top from rubbing against the transverse bows 12 comprises a cushion 13 extending across the roof between it and the bow and secured at its ends by rivets 16 to longitudinal stays 11 which rest on the bows and are in contact with the top at their outer edges only.
Patent GB-830055-A (GB)
Title: Improvements in or relating to mechanism for driving a spool of a cinematographic projector
IPC: G03B1/40
Filed: 1957-07-24
Abstract: 830,055. Kinematograph apparatus. PAILLARD S.A. July 24, 1957 [Sept. 28, 1956], No. 23404/57. Class 97(1) A spool friction drive of the kind which provides increasing torque as the weight of the spool increases, has friction surfaces perpendicular to the shaft axes and other surfaces whose generating lines are inclined to the axes to produce a wedging action to hold the first-mentioned surfaces in contact and maintain the alignment of the shafts. As shown, the shaft 1, in bearings 2, 3 is driven through a belt 15 and pulley 14 and carries a disc 4 having a plane friction member 5 and a conical friction member 6 engaging, respectively, surfaces 8, 9 in a drum 10 secured to the driven shaft 11 carrying the spool. The weight of the spool causes a wedging action between the surfaces 7 and 9 to produce, between the surfaces 5 and 8, an axial force which increase with the weight of the spool and takes up any wear. In another form, not shown, suitable for a feed spool for rewinding, the shaft 1 is driven from the pulley 13 through a pawl and ratchet operative only in the rewinding direction and is hollow, containing a spring loaded plunger carrying a disc between the disc 4 and the wall of the drum 10. The additional disc is in driving connection with the disc 4 and carries a driving member which, when the plunger is depressed, is brought into driving connection With a member on the wall of the drum to provide a direct drive between the shafts 1 and 11.