baber/WOPTO huggingface dataset:
Patent GB-992859-A (GB)
Title: Permanent magnet ferrite
Inventor: BERGE GODSHALK
IPC: C04B35/26
Filed: 1962-05-17
Abstract: 992,859. Magnetic compositions. THOMAS H. MINER & ASSOCIATES Inc. May 17, 1962, No. 19020/62. Heading H1H. A permanent magnet material comprises a sintered mixture of barium and/or strontium ferrite with barium and/or strontium manganite having the formula x(ZO.yFe 2 O 3 ).ZMnO 3  where Z is Ba, Sr or a combination of both, x is from 3 to 14 and y is from 5 to 7. The ferrite and manganite are made in separate sintering processes. The ferrite is formed by mixing barium (or strontium) carbonate with ferric oxide, drying, and sintering between 1900‹ F. and 2300‹ F. for 4 to 6 hours. A similar process is used to form the manganite. A mixture of 94%-98% ferrite with 6%-2% manganite by weight is mixed, ground to a size less than 5 Á, mixed with a consumable binder, moulded under 2000-20,000 p.s.i., or extruded and sintered in an oxidizing atmosphere between 1600‹ F. and 2700‹ F. for ¢ to 6 hours. The formed body is magnetized.
Patent GB-219491-A (GB)
Title: Improved method of and means for manufacturing shells for gold tooth crowns and finished crowns from such shells
IPC: A61C5/77
Filed: 1923-07-25
Abstract: 219,491. Lippel, G. July 25, 1923. Artificial t e e t h.- Gold shells for use in the manufacture of tooth crowns are formed by the application under pressure of a liquid or plastic material to gold discs located over cylindrical drawing moulds and clamped at their margins by guide rings to prevent' undesirable deformation. The shells may be formed intc finished crowns by placing them within matrices and forcing into the cavity of the shell a plastic pressure medium such as paraffin wax. The shell-forming apparatus, Fig. 1, comprises a drawing-die a mounted within a liner i in an outer casing k and fitted with an adjustable spring pressed plunger to support the base of the shell during the drawing operation. The pressure cylinder l, fitted with a screw fed plunger n and a conical nozzle e, is held to the casing k by a union' nut m. A guide ring b engaged by the nozzle e clamps the gold disc c at its margin. The die and lower side of the plate are lubricated with graphite emulsion, wax, or other viscous lubricant. The apparatus may be modified for producing finished crowns from the shells by removing the guide ring b, replacing the die by a two-part die p, Fig. 2, and fitting an elongated nozzle e for forcing wax or other plastic material into the shell q. The cylinder l may be fitted with a pressure gauge. The apparatus may be employed also for punching out the discs c from which the shells are to be formed by fitting a cutting-die in place of the dies a or p, and by modifying the guide ring b so as to serve as a punch operated by the nut m.
Patent GB-922513-A (GB)
Title: Typewriter ribbons or other transfer mediums
IPC: B41J31/05
Filed: 1959-06-05
Abstract: An ink, for use on a typewriter ribbon, (see Group VIII), comprises carnauba wax, beeswax, lanolin, heavy mineral oil, methyl violet base, dye-toned carbon black and lecithin, and is applied molten.ALSO:Anti-static coating compositions, applied to typewriter ribbons (see Group VIII), comprise a solid glycol, stearamidopropyldimethyl-betahydroxyethyl-ammonium nitrate, sodium dioctyl sulphosuccinate, anhydrous denatured alcohol, and optionally water.  Specified glycols are those having the trade names Carbowax 4000 and 20M.
Patent GB-565322-A (GB)
Title: Improvements in or relating to thermally operated electric cut-outs
IPC: H01R13/713
Filed: 1943-11-19
Abstract: 565,322. Thermal switches. ANDREWS, J. B.; and KATZ, E. Nov. 19, 1943, No. 19408. [Class 38 (v)] A thermal snapaction cut-out, shown as embodied in a twopin connector a has a three-armed bellcrank lever, pivoting on spindle f, the arms comprising a support e for a bridging contact d<1>, d<2> engaging one of the pins b<2> and a connector pin c, a projecting arm h at one end of the spindle f and an arm g at the other. A single strip of bimetal is secured to the base and is bent so that one end j bears, under heat, on the arm h to tilt the contacts away from the pins b<2>, c, this motion being delayed until the other end i of the bimetal strip has been moved clear of a slot in arm g, this delay causing the break of contact to be effected suddenly. Arm g projects through a slot k<1> to allow of resetting by pushing over to closing position where it is again held by detent i. Two separate bimetal strips may be used for tilting the contacts and operating the detent respectively.
Patent GB-204443-A (GB)
Title: Improvements in pawl and ratchet mechanism operated by hand pressure
IPC: F16H19/04
Filed: 1922-07-15
Abstract: 204,443. Sheridan, R. B. C. July 15, 1922. Driving.-Ratchet driving-gearing of the kind shown in Figs. 4 - - 7 of Specification 190,787 is applied to rotary fans, ventilators, brushes, egg-beaters, and rotating apparatus generally. A rack B is pressed inwards by hand and is returned by a spring and engages a pinion J connected by a pawl and ratchet clutch K with a wheel F, which gears with a pinion L secured on the driven spindle H. The return stroke of the rack B, which does not influence the wheel F, is made effective by pivoting to the rack a pawl D engaging with a ratchet-wheel C secured to the spindle H. By inclining the teeth of the rack D, or by controlling its movement by cam means, or by providing a stop H<1>, Fig. 4, against which contacts a spring @ secured to the rack, the rack is caused to drive the wheel C only on the return stroke. A fly-wheel may be provided.
Patent GB-640934-A (GB)
Title: Process for effecting catalyzed endothermic reactions
IPC: B01J8/38
Filed: 1947-07-22
Abstract: <PICT:0640934/III/1> In vapour or liquid phase endothermic reactions of organic compounds, e.g. cracking, reforming, destructive hydrogenation, dehydrogenation and dehydrocyclization of hydrocarbons, wherein the reactants are passed along with a finely-divided catalyst through a reaction zone, the catalyst, prior to its entry into the reaction zone, is heated at least to the temperature of the reaction whereby it serves as a heat source and controls the temperature of the endothermic reaction.  The preheated reactants enter the reaction zone 2 from line 1 and pick up the powdered catalyst from line 12.  The mixture of catalyst and reaction products leaving the reaction zone is separated at 3 and the separated catalyst is returned to the reaction zone through line 12, wherein it is brought to the desired temperature by heater 14. The reaction products are quenched in separator 3 by a cooling coil 4 and are withdrawn through line 6.
Patent GB-237926-A (GB)
Title: Improvements in fine adjustment devices for tuning radio receiving apparatus and the like
IPC: H03J1/14
Filed: 1925-08-04
Abstract: 237,926. Burke, J. P. Aug. 1, 1924, [Convention date]. Wireless tuning-devices, adjustment devices for. -Relates to fine adjustment tuning devices for radio receiving apparatus. The pawl or other support 10 is apertured to receive the shaft 12 of a condenser or other instrument (not shown). The other end of the shaft supports a housing 13 having a scale or like extension 16, movement of the housing causing a corresponding movement of the shaft by means of an actuating intermediary sleeve 19 and set screw 20. A knob 17 is mounted so as to be rotatable relatively to the dial and is secured to a spindle 22 which is journaled in the sleeve 19 and bears a pinion 23 smaller in diameter than the sleeve. The latter is cut away at 24 to permit engagement of the pinion 23 by a gear 25 forming part of a reducing train 25 - - 29, of which 29 is mounted on the sleeve 19 in rotatable and axially slidable relation and carries a cork gasket or friction member 30 for frictionally engaging the panel. A spring 31 acts between the clutch so formed and a collar 32 to urge the gear 29 against the panel, and is compressed when the scale is urged against the panel and held by tightening the screw 20. Direct adjustment of the instrument is made by turning the housing, the gasket sliding over the panel in the following manner:-A friction member such as a spring washer 47 acts between the shaft 12 and spindle 22 as by friction between the sleeve and knob so that the resistance of this washer is magnified through the gear train and transmitted to the gasket 30, causing a sliding contact between it and the panel. For fine adjustment the knob 17 is rotated, causing the clutch gear to be held by the gasket against rotation and an infinitesimal rotation of the shaft 12 to ensue. The clutch gear then forms a fixed abutment about which the adjacent gears revolve and cause rotation of the dial at low speed. A flexible mounting for the gear train comprises arms 36, 37 pivoted at 38, 39 to the dial and having bearings for the supporting pins 40, 41 of the gears. Resilient means such as springs 42, 43 anchored to a pin 44 ensure the necessary interengagement of the train. In this way the gear supports are removed from the congested area about the gear train, looseness or irregularities being taken up and burr prevented.
Patent GB-922179-A (GB)
Title: Photographic elements
IPC: G03C1/04
Filed: 1959-06-09
Abstract: 922,179. Photographic elements. KODAK Ltd. June 9, 1959 [June 9, 1958], No. 19634/59. Class 98 (2). A support carries a light-sensitive silver halide emulsion layer in which the binder comprises 10-50% by weight of gum arabic. The remainder is usually gelatin but may be of other materials or of gelatin together with an extender therefor. Increased covering power for the developed silver of the image in the dry state results. Seven examples first indicate the preparation of gelatin-bromoiodide emulsion and then describe the addition of gum arabic and numerous other materials for comparison procedures, the coating as on to cellulose acetate supports, and testing by sensitometric exposure and processing using an X-ray developer; initial emulsification may, however, be effected in polyvinyl acetate or numerous other materials, and coating agents, sensitizers and other additions may be included. Specifications 542, 703, 646, 712, 648,927, 670,458, 807,894, 809,340 and 841,136 are referred to.
Patent GB-1204772-A (GB)
Title: Electric razors
IPC: B26B19/10
Filed: 1968-04-25
Abstract: 1,204,772. Dry shavers. ROBERT KRUPS. 25 April, 1968 [29 April, 1967], No. 19645/68. Heading B4B. An electric razor has a long-hair cutter 18 and a perforated mantle 17 co-operating with a cutting head 10, the mantle being carried by a support 16 which is mounted over a casing top 11 and is hingedly mounted on the casing by means of bearings provided at both ends of the long-hair cutter. The bearings are formed by brackets 37 integral with a plate 12 secured to the casing top 11, and extending from the support 16 are integral limbs 38 which can be swivelled into recesses 39 in the casing top 11. This construction prevents hairs severed by the cutter 18 from entering the space below the plate 12. The head 10 is reciprocated by means of an oscillating armature motor having an oscillating lever (15), Fig. 4 (not shown), which projects through an aperture in the plate 12. Integral with the support 16 is a closure member 40 forming a lug 41 which enters under spring action an aperture 42 in the casing top. The cutter 18, which comprises a comb (19), Fig. 3 (not shown ), and a cutting blade (20), is mounted in a slot 23 in the casing top. The cutter 18 can be moved in and out by an adjusting member 29 and an identical member (35), Fig. 2 (not shown), on the opposite narrow side of casing 14 controls an on-off switch for the razor. The casing comprises halves 13 secured together. In a modification, the plate 12 and the casing top 11 are secured to the casing 14 by screwing the plate on to cramps (49), Figs. 4 to 6 (not shown), which are secured to the casing halves by inserting bent portions (50) of the cramps therein. In another modification, the brackets 37 and limbs 38 form bearing lugs (60), Figs. 7 and 8 (not shown), which project laterally beyond the casing top.
Patent GB-613776-A (GB)
Title: Improvements in filters
IPC: B01D29/15
Filed: 1946-07-02
Abstract: 613,776. Filters. PICKARD, J. A., and METAFILTRATION CO., Ltd. July 2, 1946, No. 19780. [Class 46] In a filter of the edge filtration type, the filter element is formed by a helically-wound wire adjacent turns or parts of turns of the wire being alternatively of plain and undulating form. In the construction shown in Fig. 1, a wire 17, successive lengths of which are alternately of plain and undulated form, is wound round an apertured drainage tube 7. The tube is secured to a boss 11 on a rod 12 which is rotatably mounted in a partition 6 dividing a container 1 into two parts 4, 5 for unfiltered and filtered liquid respectively. The wire 17 is engaged by a scraper 21 on a sleeve 20 which is slidably mounted on a rod 10 secured to the partition 6. The rod 12 has a handle 16 by means of which the tube 7 with the wire 17 can be turned with respect to the scraper 21 whereby solid impurities are removed from the wire. The undulations in the wire 17 may be in a vertical instead of a horizontal plane, or may extend helically along the wire. In the arrangement shown in Fig. 4, the helically-coiled wire 17 has the undulations horizontal and is secured at each end to a collar 24 the lower collar being connected to the drainage tube 7, which is pressed towards the partition 6 by means of a spring 26. A brush 27 with a handle 31 is rotatably mounted in the partition 6. To clear the wire 17 the handle 31 is turned to bring the bristles against the wire and the handle 16 of the rod 12 is depressed and turned so that the wire is engaged by the bristles. The filter may be used with a filter aid of diatomaceous earth.
Patent GB-286963-A (GB)
Title: Improvements in windows
IPC: E06B3/50
Filed: 1927-07-26
Abstract: 286,963. Riddlesworth, J. July 26, 1927. Fanlights; sashes balanced by weights. - The sliding sash A of a window, having a combined sliding and hinged sash C lying when closed in the same plane, is balanced by a cord F secured to the front face of the sash style and passing over a pulley to a weight in a recess in the frame. The lower sash is hinged to the sill and is secured in any position by bolts and holes G in the hopper sides E.
Patent GB-220954-A (GB)
Title: Improvements in sprayers
IPC: F23D11/28
Filed: 1923-07-17
Abstract: 220,954. HugÚ, E. March 2, 1923, [Convention date]. Spray burners.-In a sprayer wherein regulation of the quantity of fuel sprayed is effected by withdrawing some of the liquid, in order that the flow of liquid may not be disturbed by such withdrawal, this is arranged to take place through a pipe 10 having a mouthpiece 3<1> of a similar shape to the exit 3 of the nozzle, the mouthpiece and exit being symmetrically arranged with respect to the tangential inlets 1 to the whirl chamber of the sprayer. Specification 201,166 is referred to.
Patent GB-1199893-A (GB)
Title: Improved Seat Support Arrangement for Lift Trucks
Inventor: DANIELS RUSSELL WOODROW
IPC: B60N2/14
Filed: 1969-04-18
Abstract: 1,199,893. Battery-electric vehicles. ALLISCHALMERS MFG. CO. 18 April, 1969 [22 April, 1968], No. 19868/69. Heading B7H. A battery electric lift truck has a battery 13 supported on the rear of the vehicle chassis below a seat which is disposed rearwardly of a steering wheel 22, the seat 31 being mounted in a double-hinged support arrangement comprising a seat support member 26 pivotable to the chassis 24 about a transverse vehicle axis 27 from a normal horizontal position to a vertical position clear of the battery and the seat 31 being pivotable about an axis 33 on one lateral side of the member 26 from its horizontal position to a vertical position to one side of the truck and to be clear of the steering wheel when the member 26 is in its vertical position to permit raising of the battery without obstruction. The pivot axes 27, 33 are preferably perpendicular.
Patent GB-147871-A (GB)
Title: Improvements in superheaters for steam generators
IPC: F22G7/02
Filed: 1920-07-09
Abstract: 147,871. Schmidt'sche Heissdampf- Ges. May 17, 1919, [Convention date]. Fire and smoke tube superheaters.-In a superheater of the smoke-tube type, the tube elements are attached by flanges to the front of the headers, the headers being arranged in the spaces between the groups of smoke tubes. In one modification, Figs. 9, 11, the header is cast into concentric semicircular chambers closed by a plate c and is divided into saturated and superheated steam chambers g and f respectively. The ends of the superheater tube elements are fixed in the flanges d so that their inlet ends register through ports l with the saturated steam chamber g and outlet ends register through ports k with the superheated steam chamber f. Each flange may be secured by one bolt n or, as in a modification where the header is divided into two parts by a longitudinal partition into saturated and superheated steam chambers, one bolt secures both triangular shaped flanges. The flanges may also be of rectangular shape, in two parts superposed, the superheater tubes radiating from opposite sides and having their saturated and superheated steam ends registering through horizontal channels to a common inlet and outlet as l and k respectively in Fig. 11.
Patent GB-840987-A (GB)
Title: Process for the preparation of rubber-protein-aldehyde products
IPC: C08L21/00
Filed: 1957-06-25
Abstract: Rubber-protein-aldehyde products are made by preparing a homogeneous mixture, of alkaline reaction, of a latex of a natural or synthetic rubber and an aqueous solution or dispersion of a protein, adding an aldehyde to the mixture, adding acid in quantity sufficient to produce acid reaction and cause flocculation, and separating the flocs.  The protein may be soya bean, peanut or maize protein, milk casein, gelatine, fibrin, a polypeptide, or a condensation product of a fatty acid chloride with a degraded protein.  Examples are concerned with adding glyoxal or formaldehyde to a mixture of casein dissolved in ammonia water and 60% natural rubber latex or 45% GR-S latex, allowing the gel so formed to age, incorporating acetic acid and agitating, and filtering off, washing and drying the flocs so formed.  Vulcanized articles from the rubber-protein-aldehyde products have improved tear strength.
Patent GB-395875-A (GB)
Title: Improvements in or relating to display racks or stands
IPC: A47F7/08
Filed: 1932-07-14
Abstract: 395,875. Rack stands. WESTON, E. B., 422, Bacon Street, Dayton, Ohio. U.S.A. July 14, 1932, No. 19949. [Class 52 (v).] A collapsable display stand or rack comprises a number of article - supporting members each including two closed frames of unequal size 25, 26 connected together in spaced relation by fixed links or strips 27, four uprights 5 held in spaced relation by an octagonal brace 7 and struts 10. The brace is secured to the uprights by screws 8 and wing nuts 9, and the struts 10 are pivoted on the uprights and secured to the brace by wing-nuts 13. The lower frames 25 are supported on plates 21 which are secured to but spaced from the uprights to provide a slot into which fit the supporting frames. Castors 17 are mounted on the bottom of the uprights.
Patent GB-1060903-A (GB)
Title: Improvements to hybrid computers and simulators
IPC: G06J1/00
Filed: 1964-05-13
Abstract: 1,060,903. Electric analogue calculating. HITACHI SEISAKUSHO KABUSHIKI KAISHA. May 13, 1964 [May 15, 1963], No. 19950/64. Heading G4G. In a hybrid analogue/digital computer, time delays due to sampling time T and computation time # of the digital circuit are compensated by pre-estimating the data signal at a time (T/2 + #) ahead. The sampled output from the digital circuit fed to the analogue circuit is in the form of a staircase a, Fig. 2, the averaging of which produces curve L. The curve is delayed by (T/2 + #) from the ideal curve b. Where the analogue computer includes an integrator circuit, it is shown that compensation is effected if an amount is added to the integrator output where: e i  is the input signal to the integrator; CR is the time constant of the integrator. As shown in Fig. 5A, the input e; is fed to a potentiometer multiplier P and sign changer SC to produce the output e oa  which is added to the output @@ from integrator I. The integrator may also assume the function of the sign changer, Fig. 5B, by including a circuit having a capacitance C a  equal to the feedback capacitor. Alternatively the data may be pre-estimated by assuming that the curve L is a linear or quadratic function of time t over a limited range of sampling period and exterpolating for a time (T/2 + T) ahead in the digital computer.
Patent GB-647487-A (GB)
Title: Improvements relating to the recovery of tar acids from coal oils or tars
IPC: C07C37/00
Filed: 1947-07-24
Abstract: Tar acids are recovered from coal oils or tars by extraction with aqueous caustic soda, followed by acidification of the solution of sodium salts with carbon dioxide under a pressure above atmospheric but not exceeding 50 lbs. per square inch.  The pressure is preferably 30-35 lbs. per square inch.  The acidification process may be operated in a counter-current manner, using a tower packed with Raschig rings; the carbon dioxide may be diluted with nitrogen, e.g. 80 per cent, and with oxygen, say 5 per cent.  The Provisional Specification describes also a process in which the carbon dioxide pressure is not limited to 50 lbs. per square inch, and specifies the extraction of sodium cresylates in particular.
Patent GB-331387-A (GB)
Title: Improvements in self-locking screw thread connections
IPC: F16B39/30
Filed: 1929-07-01
Abstract: 331,387. Geisel, E. March 2, 1929, [Convention date]. Right to Patent relinquished. Locking nuts and bolts.-Self-locking screwthreaded 'members capable of reversible engagement are formed with the axial distance between adjacent turns of the thread or one member, such as the bolt d, Fig. 2, greater than the axial thickness of the thread on the other member, such as the nut c, whilst the top or bottom of the thread on one member, in this case the bottom ef of the bolt thread, is inclined to the axis. Figs. 6, 13, 17 illustrate others of the forms which may be used, in all of which the thread on one member is longitudinally symmetrical. British Specification 242,299 and French Specification 585,894 are referred to.
Patent GB-1287394-A (GB)
Title: Improvements in stand and shelving frame structures
Inventor: CASALI ANGELO
IPC: A47B57/40
Filed: 1970-04-28
Abstract: 1287394 Shelving STRONG-BLOCK SpA 28 April 1970 20315/70 Heading A4B A frame structure for stands or shelving comprises spaced channel section uprights 10 interconnected by detachable bearer beams 12, each upright 10 being provided in its web 22 with vertically spaced slots 30 defined between oppositely pressed-out, truncated triangular portions 31, 32 of the web 2 and each beam 12 having ends provided with an L-shaped connection 14 with vertically spaced tongues 41 pressed out of one limb 18 for selective engagement with the slots 30. Both portions 31, 32 having downwardly convergent sides corresponding to taper of the tongues 41. The connection may include bolts, pins or screws passed through aligned perforations 43, 44 in the web 22 and the connector limb 18.