baber/WOPTO huggingface dataset:
Patent GB-483201-A (GB)
Title: Improvements in and relating to boron nitride and methods of producing the same
IPC: C01B21/064
Filed: 1937-07-29
Abstract: Boron nitride is obtained by intimately mixing an oxygen-containing boron compound with a dilutent consisting of previously formed boron nitride, and then passing gaseous ammonia through the mixture while maintaining it at a temperature resulting in the formation of boron nitride, say about 700-1100 DEG  C.  Suitable oxygen-containing boron compounds comprise boron oxide, boric acid, metaboric acid and pyroboric acid.  The process may be conducted in an electric resistance-type furnace at atmospheric or increased pressures. Preferably, both the initial oxygen-containing boron compound and the diluent boron nitride are employed in a finely divided form.  At the end of the reaction the mass may be cooled in a dry atmosphere and washed free from unconverted oxygen-containing boron compound by means of water or an aqueous solution of ammonium nitrate or chloride.  Preferably however it is washed with a non-aqueous solvent inert to boron nitride but in which boric acid is soluble.  Such solvents are anhydrous methyl, ethyl, propyl, butyl and amyl alcohols or mixtures thereof.  Such solvents may be employed alone or in admixture with other inert liquids which are solvents for boric acid such as ethylene glycol, propylene glycol, glycerol and phenylhydrazine.  The washing may be conducted in the vapour, liquid or vapour-liquid phase.  As the boron nitride is re-used in the process, its density gradually rises.
Patent GB-927803-A (GB)
Title: Improvements in or relating to sealed shaft drive mechanisms
Inventor: SCARLETT JOHN ALAN
IPC: F16J15/52
Filed: 1960-06-16
Abstract: 927,803. Linkwork conveying rotary motion. MARCONI'S WIRELESS TELEGRAPH CO. Ltd. April 6, 1961 [June 16, 1960], No. 21145/60. Class 80 (3). An inclined crank mechanism for coupling shafts 2, 3 on opposite sides of a partition wall 1 comprises a flexible bellows 5 secured at one end to the partition wall and carrying at its other end a hollow pin 6 that receives a bearing sleeve 9 within which the end 8 of the bent shaft 2 is rotatable and which pin 6 is rotatable in a hole 15 in a block 13 carried by a forked crank 10 on the shaft 3. The shafts 2, 3 and bellows 5 may be stainless steel and the bearing surfaces provided by P.T.F.E. bushes.
Patent GB-500702-A (GB)
Title: Apparatus for boring the ground, more particularly for sinking moulds for moulding in situ concrete foundations and the like
IPC: E21B19/22
Filed: 1938-07-18
Abstract: 500,702. Boring earth. GARZI, G. A. July 18, 1938, No. 21224. [Class 85] In apparatus for boring earth, particularly for sinking mouldy for forming concrete foundations &c. in situ, wherein actuating means and change-speed reducing gear are enclosed in a casing which carries the boring tool and sinks into the earth during boring, provision is made of means operated from outside the casing for varying the speed of the tool, means for producing an excess pressure in the casing and also cooling the actuating means, and means for passing water to the bore-hole face. The machine 2 is suspended from a winch 5 by a chain &c. 3 and held against rotation by a hand clamp 33. A compressor 8 supplies air through pipes 7, Fig. 1, and 30, Fig. 2, to cool the motor 16, the air escaping through a check valve 31. A hose 9 supplies flushing water to pipes 32 extending along the sealed outer casing 18 of the apparatus, the water being withdrawn from the bore hole by a pump 12 delivering to a separator 13. The motor 16, which may be hydraulic, pneumatic or electric, drives the drill 17 through gears 28 on the motor shaft meshing with gears 25 on a cross-head 27 secured to the drill, the gears 25 also meshing with rotatable internally toothed gears 23 either of which may be locked, as by screws 24, to vary the speed of drive. '
Patent GB-622744-A (GB)
Title: Gear finishing
IPC: B23F19/06
Filed: 1946-07-17
Abstract: 622,744. Gear-cutting. NATIONAL BROACH & MACHINE CO. July 17, 1946, No. 21343. Convention date, Jan. 2, 1943. [Class 83 (iii)] A method of finishing a shoulder-gear 10 comprises meshing at crossed axes the gear solely with a tapered shaving cutter 5 having its larger end nearest the shoulder, rotating the gear and cutter while in mesh, and at the same time relatively reciprocating the gear and cutter. In a machine for carrying out the method, the cutter 5 is positively driven and mounted on a carriage 4 pivoted to a bracket 3. The shoulder-gear 10 to be finished is mounted between centres 21, 22 on a worktable 20 which is reciprocated along guides 19 by a nut 9 working in an adjustable bracket 23 carried on the slide. The work-table is adjusted angularly about a pivot 14 by a screw 15 on a sub-table 6 which is adjusted vertically by a hand wheel 7 or fed automatically. The bevel angle of the cutter is about 3 to 20 degrees, the axes cross at about 2 to 10 degrees, and the cutter is arranged so that the point of intersection of the axes falls between the centre and the rear face of the cutter as shown in Fig. 2. In a modification, the work is rotated and reciprocated horizontally, and the cutter is mounted on an angularly-adjustable carriage. External and internal gears of the shoulder or open type may be finished, and in the latter case the axes may cross at about 3 to 30 degrees.
Patent GB-531448-A (GB)
Title: Improvements in circuits comprising an indicator tube
IPC: H03J3/14
Filed: 1939-07-22
Abstract: 531,448. Wireless signalling. RADIOWERK HORNY AKT.-GES. July 22, 1939, No. 21376. Convention date, July 25, 1938. [Class 40 (v)] [Also in Group XXXV] An indicator tube of the kind comprising a cathode ray tube combined with an amplifier is arranged so that the amplifier portion is also used in the low-frequency amplifying circuit. The indicator tube 6 responds to a control voltage led to grid 7 from a point 12 in the A.V.C. line, to give an indication on the target anode 16 connected to H.T.+. The audio-frequency is led from a potentiometer 8 to grid 7 and is taken out from anode 14 through condenser 15. For the purposes of A.F. amplification, the indicator control voltage may be regarded as a varying grid bias, but to prevent distortion, it is necessary to provide concurrent variation in the anode voltage so as to keep substantially constant the slope of the dynamic characteristic of the amplifier portion. This is done by connecting anode 14 through resistance 2 to a point 1 between screen grid 3 and resistance 5, the potential of this point varying with the strength of the received signal. The invention can also be applied to an A.C. measuring bridge for zero balance, in which the galvanometer is replaced by a pentode and an indicator tube connected up according to the invention.-
Patent GB-577129-A (GB)
Title: Improvements in and relating to sights for guns and the like
IPC: F41G5/18
Filed: 1939-07-24
Abstract: 577,129. Gun sights. NASH, A. G. FRAZER-. July 24, 1939, Nos. 21421/39 and 12843/40. [Class 92 (ii)] Relates to sights for guns mounted on aircraft or fast-moving vehicles of the kind in which separated points on a sight-bar receive vector adjustments for the effect on the projectile of gravity-drop and " drift " or air flow relatively to the gun. According to the invention, the adjustment for gravity-drop is applied by movement of a member in a vertical rectilinear path, the member being slidable along the sight-bar. The adjustment for gravitydrop is proportional to f(r), where r is the range, and the adjustment for " drift " is parallel to the direction of air flow and is proportional to K.I.#Ph.f(r#), where K is a constant, I the indicated air speed, Ph the air density at altitude h, and f(r#) a known function of r the range and # the angle between the direction of motion of the craft or vehicle and the line of fire. In the form shown in Fig. 4 applied to fighter aircraft, the direction of gravity and air flow may vary with respect to the axis of the aircraft, the factor #Ph being neglected and f(r)# being represented by f1(r) xf2(#). The frame 1 parallel to the gun carries a frame 9 adjustable for range on rollers 11, 12, the rollers 12 engaging cam surfaces 13 to adjust vertically through toggle levers 14, the bearing 15 slidable on the sight bar 17. The adjustment is maintained vertical by a gyroscopic pendulum 5. The remote end of the sight bar is given the " drift " adjustment depending on the air speed I by a bellows 33 connected to a pitot tube. The adjustment is applied through toggle links 37 to a member 21 sliding on a shaft which is oriented in accordance with the angle # round a frame 32 supported by the gun on a bearing 22 and having a cam 31 to apply the correction for range. Fig. 6 shows a modification suitable for bomber aircraft flying steadily on a level keel. The angle #=cos<1>(cos a cos #) for elevation e and azimuth a of the gun is set up by a cam 56, rotated in accordance with a by a shaft 55 and worm gear 92, 93, and translated in accordance with e by links 62, 63, 85, 86. The follower 95 applies the resulting angle # to the translation of a cam 57 which is rotated from the knob 53 to suit the range r. The follower 114 of cam 57 operates on one end of a lever 115, the fulcrum 116 of which is set for I by knob 59, the other end by rod 121 and cam 49, causing a rocking movement of a member 102 about axis 101 to impart sliding movement to the end of the sight bar 54 in a ball joint 43 in bearing 73. This bearing is adjusted vertically to suit gravitydrop by a frame 68 carrying a roller 83 bearing on a cam 52 rotated for range by knob 53 and raised on frame 79 to suit e by the link 62. To introduce the correction I#Ph, the fulcrum 116 may be actuated by a solid cam rotated for I and translated for Ph.
Patent GB-1021253-A (GB)
Title: Improvements in and relating to crimped regenerated cellulose fibres
Inventor: DEELEY CHRISTOPHER MICHAEL
IPC: D01F2/06
Filed: 1961-06-14
Abstract: 1,021,253. Spinning viscose. COURTAULDS Ltd. June 14, 1962 [June 14, 1961], No. 21427/61. Addition to 835,706. Heading B5B. The process of the parent Specification (wherein viscose containing 5-10% cellulose, 5-10% NaOH and more than 0À05%, based on the weight of viscose, of polyethylene glycol of mol. wt. 600-6000 is spun at a salt figure of 3-14 into a bath containing 5-14% H a SC4, 0À5-4% ZnSO 4  and more than 12% Na 2 SO 4 , and the filaments are stretched at least 50%) is modified in that a zinc compound e.g. sodium zincate, in the proportion of 0À01-0À8% by weight of zinc, based on the weight of viscose, is incorporated into the spinning solution.
Patent GB-250096-A (GB)
Title: Improvements in or relating to carburetting apparatus for internal combustion engines
IPC: F02M13/08
Filed: 1925-08-27
Abstract: 250,096. Ralphs, T. B. Aug. 27, 1925. Crank chambers; induction pipes, fittings for. - Oil vapour or oil laden air from the crank case is admitted to the induction pipe a by a valve b interconnected with the ignition control rod k, the valve being closed when the ignition is retarded, and opened as the ignition is advanced.
Patent GB-317470-A (GB)
Title: Improvements in or relating to coal dust furnaces
IPC: F23C99/00
Filed: 1929-07-12
Abstract: 317,470. Szikla, G., and Rozinek, A. Aug. 18, 1928, [Convention date]. Void [Published under Sect. 91 of the Acts]. Producers. - In apparatus for gasifying pulverulent or small coal while in suspension in an air or gas current rising through an opening 3, particles of dust carried out of the combustion chamber 1 are collected, while still glowing, in a separating chamber 7 where they are burnt or degasified by air supplied at 18. The coal sup-, plied at 2 slides down to the opening 3 where it. is picked up by the air blast supplied at 11 and travels in the direction of the arrows 12, returning towards the opening 3, and is either completely burnt or forms combustible gases. The heaviest particles fall to the grate 5 and are completely burnt. Particles carried off in the direction of the arrow 13 drop partly into a chamber 6 whence they are returned to the combustion chamber 1 through an opening 10 by a reciprocating wedge 9 and partly into the chamber 7 below which is a water-jacketed chamber 8 and a grate 15. In the chamber 8 the dust is burnt with air supplied at 18, combustible gases formed being burnt with the gases from the combustion chamber 1 by air supplied at 14. Radiated heat from the main gas current assists in keeping the dust in the chamber 8 in a glowing condition. The chamber 6 and water jacket 17 may be dispensed with and the opening 14 for secondary air arranged between the combustion chamber 1 and the separating chamber 7.
Patent GB-281999-A (GB)
Title: Improvements in or relating to devices for the supply of the cooling medium to and its discharge from hollow rolls
IPC: B21B27/08
Filed: 1927-08-16
Abstract: 281,999. Krupp Grusonwerk A:kt.- Ges., F. Dec. 9, 1926, [Convention date]. Rolling.-Cooling fluid is circulated to hollow rolls through rings 4, 5 loose on the journals, packed at 23, anchored to the housing by means permitting axial float, and provided with annular channels 10 communicating with the interior of the rolls by radial passages 16. End rings 6 and stop clamps 7 are provided. The bores are closed by plugs 18. In a modification the rings 5 slide within flanges on the rings 4 under the control of screw caps permitting adjustment of the packing by axial compression.
Patent GB-725901-A (GB)
Title: Depositing device
IPC: A23G3/20
Filed: 1953-08-05
Abstract: 725,901. Machine for depositing confectionery, dough, &c. OAKES CORPORATION, E. T. Aug. 5, 1953 [Sept. 5, 1952], No. 21615/53. Class 87 (2). [Also in Group VI]. A manifold 11, for depositing different kinds of materials simultaneously, e.g. marshmallow, chocolate, jellies, &c. on cakes, biscuits &c. or for dough or batter in pans or on baking surfaces or for filling containings, comprises a pair of long, side by side passages 12, 13 supplying the selected materials past adjustable valves 32 and through one or other of the openings 27 to various nozzles 20. The supply to the nozzles 20 is interrupted by a slide valve 39 having spaced holes to align with the bores of the nozzles 20 or to block them when the slide valve 39 is reciprocated lengthwise as set in timed relation to the feed of the cakes &c. under the nozzle. An air cylinder or motor 46 or a cam reciprocates the bar 40 of the slide valves 39. The manifold may be traversed through an orbital path. To clean the passages 12, 13 their end plugs 57 may be released from bayonet joints 58 by rotation of finger grips 40, to admit steam or hot water. The various valves 32 may be adjusted so that alternate nozzles 20 receive different materials from one or other of the passages 12, 13 which receive their supply from pressurized sources. They are also adjusted for full or partial delivery to the nozzle so that compensation may be made for their distances from the supply inlets 12A or for the viscosity of the various materials. The deposits are timed to drop when the nozzles are moving over the receiving articles at the same speed and direction. The supply passages 12, 13 may be partitioned to supply a greater variety of deposit materials. Specification 700,962 is referred to.
Patent GB-137094-A (GB)
Title: An improved portable music case or file
IPC: B42F11/02
Filed: 1919-06-24
Abstract: 137,094. Jenyns, G. C. B. June 24, 1919. Fold-engaging files.-In a file for music, documents, &c., of the type comprising a series of parallel fold-engaging threads or cords, these are arranged in pairs in conjunction with engaging- means adapted for stretching and releasing the pairs independently, and means for maintaining all the pairs in position on the engaging-means. Fig. 3 shows an arrangement of a continuous cord f passed alternately round headed pins e on a plate d at one end of the back of the file, and round hinged hooks or catches h mounted on a plate g at the opposite end of the back. A hinged cover j retains the catches in the closed position. Figs. 4, 5, and 6 show different forms of catch h for the purpose.
Patent GB-391759-A (GB)
Title: Improvements in and relating to mercury boilers
IPC: F22B3/02
Filed: 1931-07-29
Abstract: 391,759. Mercury boilers. BRITISH THOMSON-HOUSTON CO., Ltd., Crown House, Aldwych, London.-(Assignees of Nerad, A. J. ; 1061, Glenwood Boulevard, Schenectady, New York, U.S.A.) July 29, 1931, No. 21651. Convention date, Aug. 6, 1930. Drawings to Specification. Void [Published under Sect. 91 of the Acts]. [Class 122 (iii).] In boilers of the kind described in Specification 352,206, a good bond between the tubes and the heat-conducting substance is ensured by uniting them by fused metal. In the case of copper, the tubes may be arranged in correct spaced relationship to each other, and the copper in molten condition caused to flow around the tubes after which it is permitted to harden, the metals being thus united by an autogeneous bond.
Patent GB-1056389-A (GB)
Title: Shoe last with integral heel flange
IPC: A43D3/02
Filed: 1964-05-26
Abstract: 1,056,389. Shoe lasts. G. J. PONCE. May 26, 1964 [June 6, 1963], No. 21691/64. Heading A3B. The heel portion 14 of a two part last has a downwardly directed integral flange 18 at the periphery of the heel portion for positioning an insole in a lasting operation. Preferably the flange is continuous, as shown, and its height is about equal to the thickness of an average insole. The last may be made of a plastics material.
Patent GB-577212-A (GB)
Title: Improvements in and relating to universal joints
IPC: F16D3/221
Filed: 1943-12-30
Abstract: 577,212. Universal joints. DIXON, P. H., and DIXON PLASTICS, Ltd. Dec. 30, 1943, No. 21840. [Class 80 (ii)] A universal joint for transmitting a rotary drive comprises a spherical head 10 formed with a sleeve portion 12, for attachment to a shaft, and also having a pair of grooves 13 and a co-operating member 15 formed as a fork which partly surrounds the head 10 so that the engaging surfaces subtend an angle greater than 180‹. The fork 15 has depressions for balls 18'that are placed in position and the head 10 assembled by turning it so that its axis is perpendicular to the axis'of the fork. The head 10 has a depression 14 and a ball 20 is held in position by a grub screw 21 to limit the rotary movement of the head so that it is retained within the fork.
Patent GB-735529-A (GB)
Title: Liquid heating and circulating system with selectively operable heaters
IPC: F24D19/10
Filed: 1952-09-01
Abstract: 735,529. Heating vehicles; hot-water supply systems. VAPOR HEATING CORPORATION. Sept. 1, 1952 [Sept. 12, 1951], No. 21978/52. Classes 64 (1) and 64 (2). [Also in Group XXXV]  In a heating system, particularly for use in a railway car, a primary liquid circuit comprises a steam-heated liquid heater 15, a boiler 17 and a pipe. 20 and a secondary loop which includes radiators 10, 11 is connected in parallel with the pipe 20, A pump 22 circulates liquid through the two loops, Automatic means actuated by steam pressure shut off the boiler heat supply when steam is available for the steam heater, and bring an electric control system for the boiler into operation when steam is not available. Heating by the boiler 17 and heater 15 is controlled by temperature-sensitive devices 24, 27, 30 in the primary liquid circuit. The boiler is provided with a fuel pump 44 and a combustionair blower 46 both driven by an electric motor 45, which is de-energized by the operation of switch D actuated by steam pressure when steam is supplied through a main steam pipe 43. The flow of steam to the heater 15 is controlled by a solenoid-operated valve 55 which opens a by-pass pipe 57 when the water returned by the pump 22 to the heater 15 opens a thermally actuated switch 27 on reaching a predetermined temperature. When steam, instead of condensate, passes from the heater 15 to a chamber 52 containing a temperature-responsive element 51, the latter closes the valve 50 and cuts off the steam supply until the temperature of the return water falls sufficiently. When steam is not available in the pipe 43, the switch D opens to energize the motor 45 and an audible warning device. An operator then momentarily closes a manually operated switch to open a fuel valve and ignite the fuel. Combustion continues until one of the thermally-actuated switches 24, 30 in the boiler inlet and outlet is actuated to stop the motor 45. If the switch 24 acts, a fall in the temperature to which it is subjected will result in automatic restarting of the boiler; but if the switch 30 acts, closing of the manually operated switch will be necessary. Draw-off water is heated in the heat-exchanger 28.
Patent GB-1158609-A (GB)
Title: Floor Coverings
Inventor: ARNOT JAMES
IPC: C08K3/22
Filed: 1967-05-11
Abstract: 1,158,609. Fluorescent compositions. NAIRNWILLIAMSON Ltd. 3 May, 1968 [11 May, 1967], No. 22007/67. Heading C3P. [Also in Division C4] A fluorescent floor covering comprises a plastics material, a fluorescent agent and an opaque mineral filler. The floor covering may be made entirely from this material or from particles or chips thereof embedded in a matrix which may or may not be opaque or fluorescent. The plastics material is preferably PVC and the filler titanium dioxide, calcium carbonate or whiting. Where the filler is not a pigment, a pigment may also be added, e.g. titanium dioxide, iron oxide or phthalocyanine blue or green. Fluorescent agents are identified by trade names. In the examples the PVC is plasticized with di-Alphenol phthalate (Alphenol is a registered Trade Mark) and stabilized with Ba-Cd-Zn salt and the fluorescent agent is 2,5-di(5-tert.butyl benzoxazol-2-yl)thiophene.
Patent GB-421392-A (GB)
Title: Thread counter
IPC: G01B9/00
Filed: 1934-07-27
Abstract: 421,392. Linen - pravers. BORZYKOWSKI, J., 12, Garbergasse, Vienna. July 27, 1934, No. 22008. Convention date, July 29, 1933. [Class 97 (i)] In a thread-counting instrument comprising a displaceable magnifying appliance and having a scale on its base plate, the scale is outside the field of view of the magnifier and is provided with an adjustable stop against which an operating member carrying the magnifier is arranged to abut, so as to enable the magnifier to be displaced through a predetermined distance. The stop 5 is carried by a slidable rod 3 and moves in a slot 2 in the base plate 1, the edges of the slot being graduated. The member 9 carrying the magnifying appliance is mounted above a slot 26 in the base plate and can be displaced by rack and pinion 17, 18. A ring 10 at the extremity of the member 9 carries a sleeve 11 in which the magnifier and an illumination device are mounted, and a lug 12 projecting from the sleeve abuts against the stop 5 when the magnifier has been moved through the desired distance.
Patent GB-1161482-A (GB)
Title: Improvements relating to Packing Machines
IPC: H05B3/00
Filed: 1965-05-25
Abstract: 1,161,482. Seaming non-metallic sheet material. JESSETT & HENRY (FOOD MACHINERY) Ltd. and F. M. HENRY. 25 Aug., 1966 [25 May, 1965], No. 22023/65. Heading B5K. [Also in Divisions B6, B8 and H5] A heater bar for a pouch forming machine has an electrically conductive heating tape upon which is embossed the date or other information which it is desired to record on the bag. The information may be in coded form. The tape may be of a nickel-chrome alloy.