baber/WOPTO huggingface dataset:
Patent GB-550647-A (GB)
Title: Improved tanning process
IPC: C14C3/06
Filed: 1941-07-07
Abstract: 550,647. Tanning. BURCHILL, J., CALLAGHAN, A. S., HUNNAM, R. E., and IMPERIAL CHEMICAL INDUSTRIES, Ltd. July 7, 1941, No. 8550. Divided out of 547,129. [Class 76] Skins &c. in the unpickled state are tanned by means of a chrome tanning agent in conjunction with a water-soluble salt of an aromatic dicarboxylic acid in the proportion of moles of salt to moles of Cr 2  O 3  within the range of 1:4 to 1:1, a preferred ratio being about 1:2. Sodium orthophthalate is a suitable salt. Specification 451,087 is referred to.
Patent GB-975507-A (GB)
Title: Improvements in or relating to compressors
IPC: F04B39/10
Filed: 1961-03-09
Abstract: 975,507. Compressors. INGERSOLL-RAND CO. March 9, 1961 [March 22, 1960], No. 8736/61. Heading F1N. A horizontally mounted double acting reciprocating piston compressor having sets of inlet valves 22 Fig. 1 and exhaust valves 24 disposed adjacent opposite ends of the compressor cylinder 12 has its inlet and exhaust pipes 26, 28, connected to the underside of a cylindrical housing 18 surrounding the cylinder 12 and forming therewith a valve chamber 20 which is divided into separate intake and exhaust compartments 52, 54 by apertured transverse partitions 30, 32 and by non-apertured longitudinal partitions 46, 48 Figs. 2 and 3. In operation air from the inlet pipe 26 and chamber 20 traverses apertures 38 in the upper portion of transverse partition 30 thus gaining access to both sets of inlet valves 22 and air exhausted by the sets of exhaust valves 24 which are disposed in the lower portion of chamber 20 traverses apertures 44 to gain access to the compartment 54 and the exhaust pipe 28.
Patent GB-104988-A (GB)
Title: Improved Variable Speed Driving Mechanism.
Inventor: MACLAUGHLIN ALEXANDER WILSON
IPC: B62M25/00
Filed: 1916-06-22
Abstract: 104,988. MacLaughlin, A. W. June 22, 1916. Change-speed gearing for motor-cycles.-Two loose pinions e gear with rings of teeth c, d, on the fly-wheel b on the engine shaft a, and either may be connected with the driven shaft f by a clutch g.
Patent GB-444986-A (GB)
Title: Improvements in machines for applying cement or adhesive solution to the edge, seams and other parts of waterproof garments
IPC: D06B3/10
Filed: 1935-03-21
Abstract: <PICT:0444986/III/1> A coating device, particularly for applying adhesive to parts of waterproof garments, comprises a cylindrical, conical or spherical applying roller B dipping into adhesive in a tank A, a longitudinally movable work guide and a doctor blade C to remove surplus adhesive from the work.  The guide is formed by the end d<1> of the lid D, or by a separate plate.  The doctor <PICT:0444986/III/2> blade C may be vertically adjustable to control the thickness of the coating, the fabric or garment passing over guide rollers (not shown) near the blades.
Patent GB-1453056-A (GB)
Title: Hydraulically actuated steering mechanism
IPC: B62D5/087
Filed: 1973-02-23
Abstract: 1453056 Power steering mechanism BURMAN & SONS Ltd 18 Feb 1974 [23 Feb 1973] 8878/73 Heading B7H In hydrostatic steering mechanism comprising two valve members 11, 12 which are connected to an input member 13 and to the rotor 14 of a metering pump/motor unit respectively and are arranged to direct pressure fluid to one end or the other of a steering motor upon relative rotation, initial relative rotation of the valve members 11, 12 causes relative axial movement of the members to cut off a free flow of fluid through the valve from a servo pump to a reservoir. A ball 20 projects into recesses formed in the valve members 11, 12 and so shaped that initial angular movement of the member 11 in the member 12 results in axial displacement of the member 11 against the resistance of a compression spring 17. This results in loss of communication between a groove 19 to which pressure fluid is supplied by the servo pump and a groove 18 connected through a hole 23 to a reservoir port 24.
Patent GB-369002-A (GB)
Title: Improvements in or relating to smokers' ash trays
IPC: A24F19/12
Filed: 1931-03-23
Abstract: 369,002. Smokers' ash receptacles; match holders. KAUFMANN, G., 16, Milton Street, London. March 23, 1931, No. 8881. [Class 130.] In an. ash receptacle in which an integral or removable match receptacle M depends into the space A for ash &c., the openings O<1>, O<2> for the admission of ash &c. and matches are of different size and a single lid or cover L is adapted to fit and close either opening. The lid L has an outer rim L<1> for engagement with the opening 0<1> and an inner rim R<2> adapted to fit over the rim R<1> of the match receptacle. Cigar &c. ends in the ash receptacle A are extinguished by fitting the lid L in the aperture 0<1>. The receptacle may be made of metal, china, glass, earthenware, or other composition material and provided with match-striking surfaces.
Patent GB-299671-A (GB)
Title: Improvements relating to cinematograph projection apparatus
IPC: G03B21/00
Filed: 1928-04-03
Abstract: 299,671. Gross, A. April 3, 1928. Optical-projection apparatus.-A pair of slides d, e or the equivalent are provided in connection with a projector used with a projection screen c having curtains a, b which part) and close, at the beginning and end respectively of an exhibition, and are moved simultaneously with the curtains to prevent projection of the image thereon. The slides may be formed with racks kl, Fig .4, at their top and bottom edges, the racks being engaged by toothed wheels mn geared together and to a motor r by shafts oqs and toothed The slides and curtains may be moved by separate motors controlled by one switch t and a reverse lever u, and may be synchronized by means of a variable resistance v.
Patent GB-165922-A (GB)
Title: Improvements in and relating to protective devices for electric circuits and apparatus
IPC: H02H3/093
Filed: 1920-03-26
Abstract: 165,922. British Thomson - Houston Co., Ltd., (General Electric Co.). March 26, 1920. Induction relays which move positively into the circuit-controlling position as soon as the current reaches a predetermined amount, and return rapidly when the current drops are provided with electrical means for augmenting the electromagnetic torque as soon as the disc armature begins to move so as to ensure the completion of the movement notwithstanding the increasing restraint of the usual controlling-spring. In the construction shown in Fig. 1, the initial movement of the disc moves, through a tooth and ratchet 11, 12, a metal frame 9 constituting a closed circuit and located between the operating-magnet and the disc thereby displacing the phase of the currents set up by the motor element and gradually increasing :the torque, thereof so as to compensate or overcompensate for the increasing control torque When the current falls, the motor torque falls off very rapidly and the disc rapidly returns to the " off " position. In a modification the movable closed circuit 9 is replaced by a fixed auxiliary winding on the motor element normally opencircuited by the contact-operating arm 5 which in the initial movement allows contacts to come together and short-circuit the auxiliary coil augmenting the motor torque. The torque may be augmented by the attraction of a cam-shaped magnetic armature 19, Fig. 3, located on the shaft 4 between polar extensions 18 of the retarding- magnets 3.
Patent GB-526615-A (GB)
Title: Improvements in tennis rackets and the like
IPC: A63B49/10
Filed: 1939-03-22
Abstract: 526,615. Rackets. SLAZENGERS, Ltd., and JAMES, W. H. March 22, 1939, No. 9082. [Class 132 (ii)] In a tennis racket or like frame the usual solid wedge e is hollowed out at e' below the general contour of the inner surface of the frame so as to give increased length to the central longitudinal strings and thus increase the resiliency of the racket. Insertion strips d strengthen the shoulders.
Patent GB-541370-A (GB)
Title: Improvements relating to auxiliary fuel-air admission devices for internal combustion engines
IPC: F02M1/00
Filed: 1940-05-22
Abstract: 541,370. Admitting auxiliary charges. JACKSON, A. May 22, 1940, No. 9095. [Class 7 (ii)] In a device for admitting extra air drawn through a volatile combustible material into the induction manifold means are provided for ensuring an intimate mixture of the volatile constituents with the extra air before it passes into the manifold. An additional container may be provided for supplying anti-knock mixture. Fig. 1 shows a container 1 filled, for example, with naphthalene or paraformaldehyde and provided with a perforated cap 2, through which extra air is drawn and passes through a perforated cap or strainer 4 on a tube 3 containing a fan 13, the resulting mixture passing through an aperture 6 regulated by a screw 8, and pipe 7, to the manifold 17. A second container may be provided at the side of the first, for holding an anti-knock liquid such as a solution of aniline in alcohol, a wick being provided to form an extended surface to assist evaporation. The anti-knock mixture enters the manifold past a throttle which is actuated with the main throttle. The second container may be closed by a cap, or slide, or check valve when not in use. According to the Provisional Specification, the extra fuel may be acetone, alcohol, or ether, and the anti-knock substance may be tetraethyl lead.
Patent GB-642881-A (GB)
Title: Improvements in and relating to spindles for door locks and the like
Inventor: ADIE GEORGE MOUNTFORD
IPC: E05B3/08
Filed: 1944-05-12
Abstract: 642,881. Latches. LACRINOID PRODUCTS, Ltd. May 12, 1944, No. 9099. [Class 44] A spindle for a door lock or other latching device is made adjustable in length by forming it in two parts 1, reduced in thickness at their inner ends 2 so that the two parts overlap where they extend through the barrel or other rotatable part 4 of the lock, and are kept in engagement in any desired position by means' of teeth 3 or like projections on the contacting surfaces of the overlapping parts. The outer ends of the spindle parts may be formed for the reception of grubscrews or other means for attaching the handle or knob 7, or may directly engage in a recess formed therein. Specification 577,760 is referred to.
Patent GB-916530-A (GB)
Title: Composite products of light metals containing non-metallic materials and method of preparing them
Inventor: FOERSTER GEORGE STEPHEN
IPC: C22C32/00
Filed: 1961-03-13
Abstract: A composite metal and non-metal product is obtained by die expressing a mixture of powdered metal and non-metal using a continuous screw extrusion press.  The metal may be magnesium, aluminium or an alloy thereof.  The non-metal may comprise between 1 and 20% by volume of the product; and may consist of tungsten trioxide, titanium dioxide, iron oxide, lead chromate, barium chromate, barium silicate, carbon, magnesium oxide, aluminium oxide, or mixtures thereof.  The extrusion may be effected in an extrusion press as described in Specification 781,556. Specifications 690,786 and 690,853 also are referred to.
Patent GB-585406-A (GB)
Title: Improvements in or relating to turbines
IPC: F02C5/06
Filed: 1944-05-12
Abstract: 585,406. Generating combustion products. SHAW, D. E. May 12, 1944, Nos. 9161 and 12672. [Class 51 (i)] [Also in Groups XXVI and XXVIII] The turbine blades B, on a rotor 17, are supplied with gas, mixed with steam both generated in four combustion chambers 34, 39, 58, 63 to which compressed air is supplied by compressor cylinders 1, 2, 5, 6. Pistons, in the latter, are operated by cranks 10, 12 on a shaft 13, driven by the turbine shaft 19 through gearing 23, 25, 16. Each combustion chamber, such as 39 is fed with compressed air by two pipes 35, 36 a non-return valve 37 and a pipe 38, part of the compressed air entering an explosion chamber 71, to which fuel is supplied, and part flowing outside 71 to mingle with the products of combustion issuing through holes 73. Working fluid issuesfrom nozzles 53a, 70a, to the turbine blades, ball valves 50, 67, alternately shutting off a combustion chamber such as 39, from 34. Each combustion chamber is lagged to prevent heat loss. Fuel is supplied through conduits 74 by a pump 76 supplied from either tank 79, 78, containing petrol or fuel oil respectively, to a pre-heating coil 75. A sparking or glow plug 76 is fitted to each combustion chamber. An air bottle 83, charged by a hand pump, is used to prevent pressure fluctuation in the fuel supply pipe. The rate of fuel supply is regulated by a rotatable valve V containing jets J of different sizes, one only being used at a time. Each combustion chamber is provided with a water tube 88, acting as a steam generator, the steam mixing with the combustion gases inside the chamber or just before they reach the nozzle. The pressure of the gases may remain constant from air compressor to nozzle, or the point of firing delayed until a higher fuel gas pressure has been reached. A flywheel 14 is carried by the crankshaft 13. The degree of air compression may be slight. The first Provisional Specification refers to Specification 254,384, [Class 110 (i)].
Patent GB-834961-A (GB)
Title: A process for preparing pinacols
Filed: 1958-03-21
Abstract: Pinacols of the general formula <FORM:0834961/IV (b)/1> and their salts (wherein R is an alkyl group) are made by reducing an alkaline solution of an aromatic ketone having the general formula <FORM:0834961/IV (b)/2> with potassium amalgam in a reaction chamber free of polyvalent metals, the amalgam being formed electrolytically in a separate chamber to which the amalgam spent in the reaction chamber is returned for reforming and recycling.  The reforming and recycling may be continuous such that the reaction chamber always contains a substantially uniform concentration of amalgam.
Patent GB-349690-A (GB)
Title: Metal clad roofing elements
IPC: E04D1/26
Filed: 1930-03-22
Abstract: 349,690. Rooming; tiles. INTERNATIONAL COPPERCLAD CO., 25, Broadway, New York, U.S.A.-(Assignees of Levy, S. ; 79, Chestnut Street, Rutherford, New Jersey, U.S.A.) March 22, 1930, No. 9224. Convention date, March 22, 1929. [Classes 20 (iv) and 87 (i).] Roofing shingles are formed by coating the lower surface of asphalted felt 10 thickly with asphalt 19 and embedding therein granular material 20 such as crushed slate, then applying a film of asphalt to the upper surface and coating it electrolytically with metal 11. To render the upper surface of the felt conducting, bronze powder is distributed on a thin tacky film of asphalt or bituminous emulsion. The metal 11 extends around the edges, and may extend only over the exposed areas, leaving uncoated areas 21, and the units may consist of single or multiple shingles.
Patent GB-109817-A (GB)
Title: Improvements in or relating to the Extraction of Lead from its Ores or Lead-containing Materials.
Inventor: SULMAN HENRY LIVINGSTONE
Filed: 1916-06-30
Abstract: 109.817. Sulman, H. L., and Picard, H. F. K. June 30, 1916. Lead carbonate and sulphide; zinc sulphate and carbonate.-Lead ores or materials containing lead sulphate are treated with a solution of sodium chloride containing enough calcium or other chloride to react with the lead sulphate and leave an insoluble sulphate; or the solution of sodium chloride may be used alone and, after the treatment of the ore, the equivalent quantity of the calcium or other chloride is added to remove the sulphate radical from the solution. The lead is precipitated from the solution as carbonate or sulphide or otherwise, and the solution is used again as before. In precipitating with sodium carbonate, dry sodium carbonate is preferably used to avoid increasing the bulk of the liquors. If the initial material is a mixed sulphide ore, the ore is first given a sulphatizing roast and then treated with the chloride solution, in which case the lead is first precipitated by the necessary quantity of sodium carbonate and then the zinc by a further addition of the same salt; or the roasted ore may be leached first with water or dilute sulphuric acid to remove the zinc, and the residue is then treated, as above described, to remove the lead. If silver or gold are present they may be recovered from the residue in known ways. If silver chloride is present or produced in the ore (for instance if the ore is roasted, as may sometimes be desirable, with sodium chloride), it will dissolve with the lead, and may be recovered by precipitation or otherwise.
Patent GB-180488-A (GB)
Title: Improvements in apparatus for indicating approach of railway trains
IPC: B61L1/04
Filed: 1921-03-29
Abstract: 180,488. Taylor, G. March 29, 1921. Approach of trains, alarm apparatus for warning of.-Bell or lamp signals are actuated by means of a portable contact apparatus operable by the train wheels comprising a weighted pivoted rod c with a detachable convex head e and a contact rod f, which is raised as each wheel passes the head e to connect two spring contacts k. A stop k limits the movement of the rod c.
Patent GB-1157218-A (GB)
Title: Improvements in and relating to the Continuous Casting of Molten Metal
IPC: B22D11/06
Filed: 1967-02-28
Abstract: 1,157,218. Continuous casting-machines. SOUTHWIRE CO. 28 Feb., 1967 [19 April, 1966], No. 9366/67. Heading B3F. In the continuous casting of a bar 30, e.g. of copper, in a machine having a casting wheel 11 with a peripheral groove 18 and a continuous belt 17, the wheel 11 and the belt 17 are made from steel, e.g. a low carbon steel, to give a low rate of heat transfer and a low rate of temperature transfer and also increased structural strength. When the molten metal 21 is poured the temperature of the mould forming groove 18 increases to substantially the temperature of the poured metal and heat is retained temporarily in the groove 18 adjacent the pouring point because of the low rate of heat transfer and prevents chilling of the molten metal and premature shrinkage of a peripheral skin of the cast bar. The low rate of temperature transfer allows the gradual passing of heat from the molten metal to a coolant circulating in channels in the wheel 11, and the controlled cooling ensures improved metallic structure of the solidified bar 30. The controlled cooling is said to reduce thermal and fatigue stresses in the cyclic heating and cooling of the wheel 11. The belt 17 is also cooled by sprays 27 and the groove 18 is cooled as it moves from point d-d towards point a-a by the circulating coolant in the channels.
Patent GB-1528441-A (GB)
Title: Tape rule
IPC: G01B3/10
Filed: 1977-03-07
Abstract: 1528441 Tape measures STANLEY-MABO 7 March 1977 [18 March 1976] 09432/77 Heading G1M A splitcasing tape measure has a winding drum 7, Fig. 1, provided with an annular tapered collar 10 or other shaped projection adapted to be frictionally engaged to brake the drum when a button 14 non-rotatably engaging the casing is pushed inwardly. A button 19 may be moved inwardly to push off the button 14 and unlock the drum, or the tape itself when pulled may be used to unlock the drum when the projection 10 is differently shaped and a button 19 is not provided.
Patent GB-232239-A (GB)
Title: Improvements in or relating to duplicating or copying documents
IPC: B41L3/20
Filed: 1925-04-08
Abstract: 232,239. Koreska, W., (Assignee of Oser, A.). April 10, 1924, [Convention date]. Void [Published under Sect. 91 of the Act]. Copying documents; printing processes.-In copying documents, such as book-keeping entries, the writing is effected on the leaf 2 of a ledger, a carbon sheet being placed behind the leaf with the coloured face upwards whereby a reversed copy is provided on the back of the leaf. The carbon sheet is then replaced by a ruled card 1, and the entries are copied line by line by exerting pressure on the face of the leaf 2. The writing may also be effected on a loose sheet, the ledger entry being provided by interposing a carbon sheet in the usual way. For exerting pressure, a device consisting of plate springs 4 attached to a handle 3 is drawn along against a rule 5.
Patent GB-1009613-A (GB)
Title: Lubricating oil composition having extreme pressure lubricating properties
IPC: C10M169/00
Filed: 1963-03-11
Abstract: A lubricating oil composition consists essentially of a lubricating oil base having dissolved therein 0.1-6% by weight of an additive having the general formula R1-S(O)n-S-R11 where R1 and R11 are organic radicals (e.g. alkyl or phenyl groups) and n is 1 or 2.  In examples, the oil is a petroleum lubricating oil and the additive is either n-butyl (n-butane thiolsulphinate) or phenyl (benzene thiolsulphinate).
Patent GB-286485-A (GB)
Title: Improvements in and relating to detachable heel pads for boots and shoes
IPC: A43B21/39
Filed: 1927-04-06
Abstract: 286,485. Hutchison, F. A. April 6, 1927. Protectors, securing.-Detachable heel pads are secured to heels by interengaging plates a, f, Fig. 4, with internal locking means and with flanges b, j, turned up at the front and locked together as an additional securing means against detachment. The upper plate a has the flange b, Fig. 1, preferably spiked at c for ready attachment to a heel. The plate is also secured by a screw e which engages a detent h, Fig. 4, in the lower plate f and acts as an internal locking means. The plate f is slotted at g to ease the passage of the screw head into position. The flanges b, j may be secured together by a screw which enters the heel, or may be fastened by a pivoted piece of channelled metal k, Fig. 5, which engages both flanges, an extension l passing through a slot in the lower plate acting as a lock. In a modification, Fig. 13, the detachment of the lower plate is prevented by a loose piece r, slotted at s, engaging a stud m on the upper plate, which in this case is not spiked. In another modification, the catch consists of an eccentrically-pivoted disc attached to the upper plate and engaging the lower one to lock it in place. Specification 233,269 is referred to.
Patent GB-310513-A (GB)
Title: Improvements in or relating to microphones
IPC: H04R21/02
Filed: 1929-03-25
Abstract: 310,513. Naamlooze Vennootschap Philips' Gloeilampenfabrieken. April 27,1928, [Convention date]. Microphones.-The electrodes 3 4 of a granular microphone e a c h comprise a plurality of electrically connected layers of metal gauze between which extends the layer of carbon 2 thus ensuring good contact with the electrodes. The electrodes may be of precious metal or of copper which may be plainized or plated with gold or silver. The electrodes may be segmental in shape and arranged as shown, so that the direction of current flow through the carbon is parallel to the diaphragm.
Patent GB-1362153-A (GB)
Title: Regulated inverter
IPC: H02M3/338
Filed: 1973-02-27
Abstract: 1362153 Controlling inverters and D.C.-D.C. converters SOC ITALIANA TELECOMUNICAZIONI SIEMENS SpA 27 Feb 1973 [16 May 1972] 9559/73 Heading H2F [Also in Division G3] In an inverter comprising a pair of electronic switches such as transistors T 7 , T 8 , driven by duration-modulated pulses (from M) via gates P 1 , P 2 , and in which the output is regulated by rectification at D 3 , D 4  and comparison at NC with a reference Vr, a pair of optical couplers OC 1 , OC 2  is included in the regulating loop to isolate the control circuit from the inverter. As described, capacitor C is charged via a constant current source G and repetitively discharged at the frequency of a clock source TM so as to generate a sawtooth signal. Comparator CM changes state at each transition of the sawtooth with the error voltage from comparator NC. The resulting pulses are duration-modulated in dependence on the error and passed by NAND gates P 1 , P 2  (alternately enabled by a bi-stable FF) to optical couplers OC 1 , OC 2  and transistors T 5 , T 6  to trigger the inverting transistors T 7 , T 8 . Rectified outputs are derived from RF 1 , RF 2 .