baber/WOPTO huggingface dataset:
Patent GB-669891-A (GB)
Title: Improvements in or relating to hot-gas engines
IPC: F02G1/05
Filed: 1946-12-02
Abstract: 669,891. Hot gas engines. NAAMLOOZE VENNOOTSCHAP PHILIPS' GLOEILAMPENFABRIEKEN. Dec. 2, 1946 [Aug. 27, 1943], No. 35653/46. Class 7(i) The power of a hot gas engine is controlled by bringing the working space into communication with another chamber by way of a connection the resistance to flow of which is variable and between the working space and the other chamber are provided in addition to and in parallel with the connection two passages adapted to be closed one of which passages allows flow of gas in one direction only and the other of which passages allows the flow of gas only in the other direction. In Fig. 2, a channel 29 is connected to the engine cylinder (not shown) and a channel 27 connected to an enclosed chamber 26. The channels 29 and 27 have between them three passages in parallel controlled by a plunger 39. By positioning the plunger so that an appropriate groove 42, 43, 44 registers with a passage any desired passage can be opened. Passages 36, 38 have respectively non-return valves 41, 40 in them. The plunger is controlled by a governor, e.g. a centrifugal governor of the engine (not shown). During ordinary operation of the engine both passages 36 and 38 are closed and the channel 29 communicates with a passage 37 through the groove 43. If the load on the engine is suddenly greatly increased the direct result thereof is a decrease of power and therefore of speed. The governor lowers the. plunger 39. Communication between channel 29 and passage 37 becomes continuously increasingly restricted and finally the groove 42 in the plunger opens the passage 38. As long as the gas pressure in the cylinder is lower than the gas pressure in the chamber 26 a current of gas will flow in the direction towards the cylinder. A return flow is prevented by the non-return valve 40. On decrease of external load the governor by displacing the plunger brings the groove 44 in line with the passage 36, thus permitting a gas current flow only from the cylinder to the chamber 26. Instead of two non-return valves, use may be made of two pressure-reducing valves, whose pressure-reducing action is con-' trolled by a governor. The Specification as open to inspection under Sect. 91, describes an engine, Fig. 2 (Cancelled), comprising a channel 27, 28, 29 connecting the cylinder to an enclosed sealed crank chamber 26. A plunger 30 can be moved axially to vary the area of the channel or close it completely. The plunger is controlled by the speed regulator of the engine. This subject-matter does not appear in the Specification as accepted.
Patent GB-1453162-A (GB)
Title: Platen and paper roll support and drive mechanism
IPC: B41J15/04
Filed: 1974-08-15
Abstract: 1453162 Paper feeding VICTOR COMPTOMETER CORP 15 Aug 1974 [8 Nov 1973] 35951/74 Heading B6F Paper handling mechanism for a serial printer comprises a rotatable platen 52 supported by a shaft 57 and releasable so as to be swung away from printing position, drive means for the platen, and a paper roll support which imposes a drag on a paper roll mounted thereon. A paper roll is mounted on a spool having an end plate 111 formed with fingers 112 having projections 114 which engage one edge of the roll. The spool is mounted on a spindle 106 so that the other edge of the roll engages an arm 104 to impose a drag on the paper 51 unwound from the roll. The paper passes between the platen 52 and a pressure roller 73, the platen being swingable on an arm 59 away from the pressure roller. The platen is rotated for line spacing either by a drive shaft (22, Fig. 2, not shown) through gears (29, 92, 94) or manually, when a resilient coupling between the platen and the final gear is discoupled.
Patent GB-360220-A (GB)
Abstract: 360,220. Postmarking-machines ; printing-surfaces. WHEELER, W. H., Stamford, and OGDEN, J. W., Springdale, both in Connecticut, U.S.A. Nov. 26, 1930, No. 35639. [Class 100 (ii).] Fraudulent impressions are prevented in postage meter and like printing-machines by providing, in conjunction with a flat or curved die, a device adapted to project beyond the surface of the die so as to prevent an impression being printed simultaneously from the whole surface of the die. The device is so controlled that, while preventing a complete impression being printed by pressing a sheet against the die when in an exposed position, it does not interfere with the printing operation produced by the usual rocking or rotary impression member. As shown in connection with the printing drum described in Specification 332,918, [Class 100 (ii), Printing processes &c.], the device comprises, in one form, a framework 3, Fig. 1, embracing a die 2 and pivoted thereto at 3a. A roller 3d carried by a pin on the framework 3 rides in a cam groove 10 in the machine frame whereby a member 3b at one end of the framework normally lies flush with the surface of the die 2 but is projected after passing the impression point, and two prongs 3c at the opposite end are normally projected and are withdrawn at the inking and impression points. In the modification shown in Fig. 4, the member 3 is rocked about the pivot 3a by the end of a plunger 5b, which is slidably mounted in a cylinder 5 and is projected towards the pin 3d by a spring 5s at the required moment, whereby the end 3c cannot be pushed into the drum when the die is exposed after the complete impression has been printed ; a pawl 6 engaging a rack 5c on the plunger secures the latter in the operative position. The pawl 6 is released by a stationary cam 8 engaging a roller 6d on the pawl, and the plunger is subsequently withdrawn by a second cam 7. The members 3b, 3c may be plain or may form part of the printing- surface.
Patent GB-945459-A (GB)
Title: Cigarette lighter device for automobile
Inventor: TAKASUGI HIROSUKE
IPC: A24F15/10
Filed: 1962-09-25
Abstract: 945,459. Combined cigarette dispensers and lighters. NIHON TSUSHO SANGYO CO. Ltd. Sept. 25, 1962, No. 36324/62. Heading B8P. [Also in Division F4] A cigarette lighting and delivery device for automobiles comprises a drawer 21 for the cigarettes 18 slidably fitted in a casing 20 and having an inclined bottom surface leading to an opening through which the cigarettes drop one at a time into a chamber. An operating lever is reciprocated to release the cigarette within the chamber whereby one end of the cigarette abuts a heater and is lit. The drawer 21 is provided with a cigarette stopper member which projects across the opening therein when the drawer is removed from the easing for refilling. A projection 26 within the casing 20 holds the stopper member away from the opening when the drawer is in position.
Patent GB-944794-A (GB)
Title: Multi-aperture magnetic core switch circuit
IPC: H03K17/84
Filed: 1962-09-25
Abstract: 944,794. Circuits employing bi-stable magnetic devices. AMP Inc. Sept. 25, 1962 [Oct. 12, 1961], No. 36360/62. Heading H3B. A magnetic switch which is stable in both " ON " and " OFF " positions is comprised by a multi-aperture core 1 of square hysteresis loop material with a minor aperture 4 through which pass radio frequency carrier and D.C. bias windings 7 and 8, a signal winding 9 and a further winding 10 such that when the core is switched to its " OFF " state by a pulse in a winding 5 a signal in winding 9 produces no output in winding 10 but when the core is switched to its " ON " state by a pulse in a winding 6 an R.F. signal modulated by the signal in winding 9 is produced in winding 10. In the embodiment of Fig. 1 two telephone sets are arranged to be interconnected and the receivers are arranged, by means of capacitors 17, 17<SP>1</SP>, to respond only to modulated radio, frequency signals. The windings 9 and 10 may be connected together as a radio frequency output will only be produced when the switch is " ON." The sum of the cross-sectional areas of the limbs adjacent aperture 6 are equal to the cross-sectional area of the torus and greater than the sum of the cross-sectional areas of the limbs adjacent aperture 4 so that the latter limbs are saturated in the " OFF " position. The embodiment of Fig. 3 is stated to require a D.C. bias in the signal winding 109 or 110 before a signal can be induced therein. R.F. chokes may be included in the D.C. winding 7 of Fig. 1 and the switches may be used to interconnect more than two sets by including further signal windings. Several switches may also be used to form a matrix to connect one subscriber to any other. In the " OFF " state the core 1 is saturated in a clockwise direction relative to aperture 2, but in the " ON " state the flux round aperture 3 is anticlockwise and in the rest of the toroid is clockwise with respect to aperture 4 so that flux switching can occur around this aperture 4.
Patent GB-741080-A (GB)
Title: Improvements relating to the formation of oxalate coatings on metallic surfaces
IPC: C23C22/46
Filed: 1953-12-31
Abstract: Oxalate coatings are formed on metallic surfaces by treatment with an aqueous solution of oxalic acid containing titanium. Titanium may be introduced as TiF4, TiCl4, Ti2 (C2O4)-3 10H2O, K2TiF6-H2O or K2TiO (C2O4)-2H2O.  Oxidizing agents which may be present include chlorates, nitrates, hydrogen peroxide, sodium meta nitrobenzine sulphonate and picric acid; activators include chlorides, fluorides, bromides, iodides and thiocyanates.  The coating of Fe, Cu, Cr, Ni, Ni-Cu, Ni-Cr-Fe, brass, Zn, Cd, Mg, Al, Sn and Pb is referred to. Specifications 661,385, 675,024 and 683,954 are referred to.
Patent GB-326449-A (GB)
Title: An improved skeleton carrier for use on bicycles or tricycles
IPC: B62J7/00
Filed: 1928-12-10
Abstract: 326,449. Horner, J., and Hearn, J. W. Dec. 10, 1928. Luggage-carriers.-A front carrier a is provided with two pairs of tubes b<1>, c<1> adapted to be detachably secured in the outer sockets g of two three-way lugs d, e brazed to the cycle frame members h, j, the ends of the tubes b<1>, c<1> engaging shoulders k in the outer sockets g and being threaded to receive screw plugs l. Reference has been directed by the Comptroller to Specification 13114/10.
Patent GB-349949-A (GB)
Title: Improvements in and relating to synchronous motor drives
IPC: G11B17/00
Filed: 1929-11-28
Abstract: 349,949. Driving arrangements. BRITISH THOMSON-HOUSTON CO., Ltd., Crown House, Aldwych, London.-(Assignees of Hall, C. I. ; 709, Packard Avenue, Fort Wayne, Indiana, U.S.A.) Nov. 28, 1929, No. 36480. Convention date, Nov. 28, 1928. Void [Published under Sect. 91 of the Acts]. [Class 35.] A gramophone turntable is driven through gearing from a synchronous motor and spring-operated means are provided to accelerate the motor and turntable at starting to the normal operating speed and to close a switch in the motor circuit. The turntable spindle 13 carries a gear 14 which meshes with a worm gear 15 on a shaft 16 driven by a synchronous motor 17. The worm gear 15 is cut so that the shaft 16 may be driven from the spindle 13 during the starting operation. To prevent transmission of hunting oscillations from the motor 17, a flywheel 18 is secured to the shaft 16 and the armature 19 is frictionally connected to the flywheel 18 by spring fingers 20, this frictional contact being maintained by a collar 21 secured to the shaft 16. Resilient packing is provided at the end bearings of the shaft 16 as shown at 21. To the bearing housing 24 of the spindle 13 is pivoted an arm 25 the outer end of which co-operates with a latch 26. A spiral spring 27 has its inner end fastened to the bearing housing and its outer end secured to a pin on the arm 25. Pivotally mounted at 28 on the arm 25 is a lever 29 whose outer end carries a friction pad 30 which normally contacts with the rim 31 of the gramophone turntable 12 under the influence of a spiral spring 34. The inner end of the lever 29 carries a part 32 adapted to close the motor switch 33. When the latch 26 is moved to release the arm 25, the arm rotates in a clockwise direction under the action of the spring 27 to accelerate the turntable and the rotatable parts of the motor drive. When the part 32 closes the switch contacts 33, the lever 29 turns about the pin 28 until it comes into contact with a stop pin 35. This operation moves the pad 30 away from the rim 31 and the tension in the spring 27 is made sufficient to hold the switch 33 closed and the pad 30 away from the rim 31. To stop the gramophone, the arm 25 is moved back until engaged by the latch 26 thus allowing the switch contacts to open, to effect braking of the turntable and to rewind the spring 27 to its originai tension.
Patent GB-1142320-A (GB)
Title: Fibrous article and latex for bonding thereof
IPC: D04H1/64
Filed: 1966-08-15
Abstract: 1,142,320. Latex compositions. INTERNATIONAL LATEX & CHEMICAL CORP. 15 Aug., 1966 [26 Aug., 1965], No. 36483/66. Heading C3P. [Also in Division D2] A latex composition comprises, by weight of polymer solids, 15-50% of at least one dieneacrylic ester copolymer, 20-40% of at least one carboxyl group containing diene copolymer, and 25-60% of at least one copolymer of a conjugated diene and an ethylenically unsaturated monomer other than an acrylic ester or a carboxyl-containing monomer. The exemplified composition is of equal parts of butadiene/ styrene/itaconic acid, butadiene/methyl methacrylate, and butadiene/styrene copolymers.
Patent GB-835039-A (GB)
Title: Improvements in pressure regulators for breathing apparatus
IPC: B63C11/22
Filed: 1956-11-29
Abstract: 835,039. Underwater breathing apparatus. SPIROTECHNIQUE. Nov. 29, 1956 [Dec. 2, 1955], No. 36515/56. Class 81 (2). [Also in Group XXIX] The diaphragm 2, Fig. 5, of a diver's breathing apparatus experiences a downward thrust due to both water pressure and a weight p, the latter applying a thrust equal to a column of water having a height corresponding to the distance between the centres of thrust of the diaphragm 2 and the diver's lungs; the underside of the diaphragm 2 communicates with the diver's respiratory tracts via a duct 6, and with a source of pressure air through a valve 4. At the outlet of the exhaling duct 9 is a valve 8 consisting of a thin elastic disc which is fixed to a rigid valve 10 by a rod 11. During inhalation the pressure beneath the diaphragm 2 is lowered and the diaphragm moves downwardly to open the valve 4 through levers 5; the two valves 8-10 opening in opposite directions to prevent leakage. Upon exhalation the diaphragm 2 is lifted, since its area is greater than that of the valve 10, and the weight p lifts the rod 11 against the flexibility of the valve 8 to open valve 10, the difference in pressures on both sides of the valve 8 then causing it to open to place the duct 9 in communication with the water space above the diaphragm 2. In a modification, the weight is slidable on a rod secured to the diaphragm so that it does not act on the diaphragm when the apparatus is inverted although in this position it does mechanically open the rigid valve. In another modification, the disc valves are replaced by a single valve 14, Fig. 7, locked into closed position by a spring-loaded lever 15 and opened upon exhalation by the weight p acting on the lever in opposition to its spring 17 and unlocking the valve which then automatically opens.
Patent GB-177275-A (GB)
Title: Improved lifting clamps
IPC: B66C1/48
Filed: 1920-12-30
Abstract: 177,275. Hench, W. M. Dec. 30, 1920. Lifting - dogs. - Double - grip lifting- dcgs, for raising flat articles such as metal plates, are constructed so that the gripping jaws exert an inward and upward pressure on the plate being lifted. Two links 20 suspended from a hook or the like are pivoted to curved gripping - levers 14 which are pivoted in turn to a pair of parallel plates 4 at the lower end of a central load-receiving notch 8 in the plates. When the clamp is free, the weight of the unsupported plates 4 depresses the inner end of the gripping-levers and so rotates them about the axes 18 to close the jaws. On being lowered into contact with a plate the closed jaws rest on the edge of the plate until the continued lowering of the links 20 rotates the levers 14 to open the jaws sufficiently to allow the plate to pass into the notch. Tension applied to the members 20 then closes the gripping-levers again so that the jaws engage the plate with an upward bite.
Patent GB-1362365-A (GB)
Title: Production of enzyme preparations
IPC: C12N9/98
Filed: 1970-07-28
Abstract: 1362365 Pelletized enzyme preparations NOVO TERAPEUTISK LABORATORIUM A S 12 July 1971 [28 July 1970] 36564/70 Heading C3H A process for the production of enzyme preparations consisting of uniformly sized' solid spheres, which comprises subjecting enzymecontaining pellets prepared by extrusion from a mixture containing 75-97% by weight of a solid enzyme containing powder comprising, if desired, an enzyme stabilizer, and from 25- 3% by weight of water, to a spheroidizing process using a rotational speed of up to 2000 r.p.m. in an apparatus causing frictional and centrifugal forces to be applied to the said pellets and then, if desired, fluid bed drying the product.
Patent GB-1215798-A (GB)
Title: Cranes having a telescopic boom with a compensating boom hoist cable system
IPC: B66C23/693
Filed: 1969-07-22
Abstract: 1,215,798. Jib cranes. HARNISCHFEGER CORP. 22 July, 1969 [25 July, 1968], No. 36678/69. Heading B8B. A crane boom B comprises telescopic base, intermediate, third and fourth sections 10, 12, 14, 16. The base section 10 is pivotally mounted for luffing and the boom B is supported by a cable system S extending between the boom tip 25 and a winch (not shown) on the crane frame. The system S comprises line 29a from the winch to pulley 30 and portions of cables 50, 52, 54 which form suspension cables respectively anchored adjacent the rear ends of boom sections 12, 14, 16 at points 12a, 14a, 16a after passing around sheaves 40, 42, 44. The cables 50, 52 are respectively anchored on pulleys 32, 34 after passing around pulleys 30, 32. The cable 54 is anchored at point 25. This arrange ment provides a compensating system when the boom B is extended. The suspension cables 50, 52, 54 can be individually changed in length for a particular crane design to vary the offset of the pulleys 30, 32, 34 from the sheaves 40, 42, 44 selectively to adjust the supporting effect of a suspension cable on its associated boom section as shown in Fig. 5. In a modification, Fig. 6 (not shown), an extra fall is provided between the pulleys 30, 32; 32, 34; 34, 36 by passing the cables 50, 52, 54 around the pulleys 32, 34, 36 and anchoring them on the pulleys 30, 32, 34.
Patent GB-1440450-A (GB)
Title: Process for the dyeing of synthetic fibrous material from organi  solvents
IPC: D06P1/92
Filed: 1973-08-03
Abstract: 1440450 Dyestuffs HOECHST AG 3 Aug 1973 [4 Aug 1972] 36953/73 Heading C4P [Also in Division D1] Dyestuffs of the general formula wherein R is an optionally substituted alkyl, cycloalkyl or aryl group or a heterocyclic group, R 1  is optionally substituted alkyl, R 2 , R 3  and R 4  which may be the same or different are halogen, alkyl, alkoxy, acyloxy, aryl, carbalkoxy or cyano, n, n 1 , n 2  which may be the same or different are 0 or 1 provided that at least one of R, R 1  R 2 , R 3  or R 4  contains at least 6 aliphatically bound carbon atoms are prepared by reacting a 1-nitro-6-alkoxy-benzthioxanthene-3,4-dicarboxylic acid anhydride with an amine H 2 N-R.
Patent GB-816125-A (GB)
Title: Production of ammonium persulfate and potassium persulfate
IPC: C01B15/08
Filed: 1956-12-04
Abstract: <PICT:0816125/III/1> Potassium persulphate is produced by exchange between an aqueous solution, derived from the anodic oxidation of ammonium sulphate, containing ammonium persulphate, ammonium sulphate, and sulphuric acid, wherein part of (NH4)2S2O8 is solid, introduced into the top of a tube, so that the solid settles towards the bottom of the tube, and an aqueous solution of potassium sulphate and sulphuric acid introduced into the bottom of the tube, whereby the settling solids are converted to K2S2O8, which is withdrawn from the bottom of the tube, and an aqueous solution free of K overflows at the top.  This process is described in association with a preparation of hydrogen peroxide and ammonium persulphate.  An aqueous solution of (NH4)2SO4 and H2SO4 is anodically oxidized in electrolysis cell 6 to form (NH4)2S2O8 and the oxidized solution passes to distillation still 8, where hydrolysis and distillation, in the presence of H2SO4, of the (NH4)2S2O8 to (NH4)2SO4, through intermediate formation of Caro's Acid (H2SO5), yields H2O2 which is recovered as vapour at 9.  The remaining solution has make-up water added at 10 and is returned to cell 6.  All or part of the oxidized solution may be withdrawn from the cell at 12, to vacuum evaporator 13 where H2O is evaporated under 50-70 mm. Hg. abs., and thence to crystallizer 16 where cooling to 15-20 DEG  C. under vacuum produces (NH4)2S2O8 crystals. (NH4)2S2O8 crystals could be recovered by passing the slurry from crystallizer 16 through extractor 21, whence separated solution is returned through 25 to distillation still 8, and crystals pass to drier 23.  The crystal slurry from crystallizer 16 passes through 19 to the top of fractionation and conversion tube 30, where the (NH4)2S2O8 crystals settle as a loose mass, and a clear solution flows through 31 to distillation still 8.  An aqueous solution of K2SO4 and H2SO4 enters the tube at 33, and when solute equilibrium is established between the solid and liquid in the tube, NH4+ and SO4- ions predominate in solution and K+ and S2O8- ions in the solid, so that the slurry withdrawn at the bottom of the tube is K2S2O8 crystals in a solution of KHSO4 and K2S2O8, from which K2S2O8 may be recovered by use of the extractor 21 and drier 23, while separated solution is returned to the tube through 35.  The overflowing solution is free of potassium.  Specification 785,660 is referred to.
Patent GB-1164348-A (GB)
Title: Method of Preparing Aminopolyacetonitriles
IPC: C07C67/00
Filed: 1967-08-11
Abstract: 1,164,348. Preparation of aminopolyacetonitriles. W. R. GRACE & CO. 11 Aug., 1967 [15 Aug., 1966], No. 37085/67. Heading C2C. Aminopolyacetonitriles are obtained by a process which comprises the steps in sequence of (1) forming a reaction mixture at or below ambient temperature comprising an aqueous solution of hydrogen cyanide, formaldehyde or a compound capable of liberating formaldehyde, and a primary or secondary amine or a compound capable of liberating such an amine, or of hydrogen cyanide, a compound capable of liberating both formaldehyde and a primary or secondary amine, and if stoichiometrically required, formaldehyde, and (2) heating the reaction mixture in the presence of an acid catalyst to a temperature of not less than 60‹ C. The process may be effected either batchwise or continuously, suitably at a temperature of 100- 200‹ C., and an autogenous pressure (e.g. 1.1 to 10 atmospheres) sufficient to maintain the reactants in the liquid phase is preferably maintained. The acid catalyst may be an aqueous solution of a mineral or organic acid, e.g. sulphuric acid, hydrochloric acid, nitric acid, acetic acid or p-toluene-sulphonic acid, or the catalyst may comprise an acidic ion-exchange resin which is preferably synthetic. Specific examples relate to the preparation of nitrilotriacetonitrile from a reaction mixture comprising hexamethylenetetramine, formaldehyde, hydrogen cyanide, sulphuric acid and water.