baber/WOPTO huggingface dataset:
Patent GB-733926-A (GB)
Title: Improved process and device for the hydrolytic treatment with steam of organic material in powder form or small pieces
IPC: C07D307/50
Filed: 1952-07-15
Abstract: In a process for producing furfural, 100 kg. of olive residue which have been treated with 2 kg. of diluted sulphuric acid are introduced into a mixing apparatus (see Group II), and steam, injected at the bottom of the mixing apparatus, is passed through the material, producing 12 kg. of furfural in 20 minutes. Specification 255,375, [Class 86], is referred to.
Patent GB-152752-A (GB)
Title: Improvements in and relating to the treatment of zinc solutions
IPC: C01G9/00
Filed: 1919-07-17
Abstract: In the purification of zinc solutions, and in particular the preparation of zinc solutions for electrolysis, silica is separated in a filterable form by adding an alkali or alkaline earth carbonate in slight excess, to the neutral or substantially neutral liquor, at an elevated temperature.  In an example, a ground zinc sulphide ore is roasted to convert to oxide and sulphate, and then after re-grinding is added to hot sulphuric acid of 10-15 per cent strength, which may be that obtained from the electrolytic cells. When the acidity has been reduced to 0.5 per cent it is still further diminished to 0.1 per cent by the addition of a mixed precipitate of zinc oxide and carbonate and iron oxide, obtained in a subsequent stage in the purification. Neutralization is finally attained by adding whitening in the form of powder or of a milk made with water. The silica is then precipitated by adding about 10 lbs. of whitening per ton of liquor and maintaining the temperature at 90-100 DEG  C. for a short time with agitation.  After filtration, the silica is washed with water to free it from zinc.  It is desirable to neutralize as much of the sulphuric acid as possible with zinc as in the example, and in the method described in Specification 104,697, but the neutralization may be effected by the addition of whitening only.
Patent GB-421727-A (GB)
Title: An improved method of producing photographic dyestuff images
IPC: G03C7/28
Filed: 1933-06-23
Abstract: 421,727. Colour photography. GASPAR, B., 38, Innsbruckerstrasse, Sch÷neberg, Berlin. June 23, 1933, No. 17962. Convention date, June 23, 1932. [Class 98 (ii)] Photographic dyestuff images are formed in photographic material comprising a sensitized, e.g. silver halide, layer and a juxtaposed layer containing a dye or dye forming substance, by subjecting the developed image in the sensitive layer to treatment, producing chemical reactions which act upon the adjacent layer to cause destruction or formation of the dyestuff therein. Thus, a layer containing a leuco body may be disposed above or below the sensitive layer and an oxidizing or catalytically-acting compound produced at the image or non-image portions, the dyestuff being developed by subsequent treatment with an acid or oxidizing agent as described in Specification 379,679. In a further example, a silver halide layer is disposed between two dyed layers and silver images formed on the outer surface of the middle layer by exposure from opposite sides, dye images being subsequently formed by treatment by dye destruction methods as described in Specifications 395,718, 397,188, and 397,192. Dyed gelatine layers may also be disposed between the support and light-sensitive layer, e.g. dyed layers may be applied to opposite sides of the support and silver halide layers applied thereover. Other described arrangements comprise a pair of dyed gelatin layers associated with a pair of thin silver halide layers, the latter being disposed between, or alternating with, the gelatine layers. The layers may also be employed in conjunction with light-sensitive layers containing dyes or dye formers. Specification 397,159 also is referred to.
Patent GB-461170-A (GB)
Title: Improvements in and relating to aircraft
IPC: B64C27/04
Filed: 1936-06-29
Abstract: 461,170. Helicopters. KONIG, J., and KADLEC, J. June 29, 1936, No. 17967. Convention date, June 29, 1935. [Class 4] A helicopter, Fig. 1, has oppositely rotated superposed helical screws 1, 2, respectively secured to shafts 3, 5, which together with driving engines 7 and fuel tanks 16, are mounted in a casing 13 closed by a cover 14 and connected to a nacelle 12 bv trunnion bearings 15, Fig. 3, and adjustable relative thereto in the fore and aft plane. The adjusting means comprise a toothed segment 19 secured to casing 13 with which meshes a pilotoperated worm 20. The helical screws each consist of curved rods or tubes fitted into hubs keyed to the shafts and successively angularly displaced in such manner that when fabric is secured to the rib elements, helical surfaces are produced. A thrust bearing 27 is interposed between the two screws and shaft 3 carries a retaining nut 28. Shaft 3 is fitted with a pinion 4, Fig. 4, at its lower end and shaft 5 with an internally toothed gear ring 6. Gears 4 and 6 are engaged by pinions 8, 9 secured to driving shafts of motors 7.
Patent GB-405877-A (GB)
Title: Improvements in and relating to devices for feeding electron discharge tubes
IPC: H05G1/34
Filed: 1933-06-23
Abstract: 405,877. Discharge apparatus. MULLER AKT.-GES., C. H. F., 24, Rontgenstrasse, Hamburg, Germany. June 23, 1933, No. 17969. Convention date, July 11, 1932. [Classes 39 (i) and 40 (v).] A high-tension tube, particularly a transmitting tube, rectifier or R÷ntgen-ray tube, has a cathode 8 heated partly from a secondary 16 on the main transformer 2 and partly from an auxiliary transformer 3 the primary current of which is variable and the secondary current of which may assist or oppose the current derived from the secondary 16. The two transformers may be arranged in a common housing. The primary current of transformer 2 is derived from an auto-transformer 19, regulated by a switch 11, and the primary current of transformer 3 from taps on the auto-transformer 19, regulated by switch 12. One construction of auxiliary transformer is shown in Fig. 2. The magnet yoke is in two parts 20, 21. The primary 22 and secondary 23 are wound on these parts without high-tension insulation. An insulating layer 24 preferably integral with the insulating casing 25 separates the yokes 20, 21.
Patent GB-390122-A (GB)
Title: Active mass for the positive electrodes of alkaline accumulators
IPC: H01M4/52
Filed: 1931-06-22
Abstract: 390,122. Accumulators. SVENSKA ACKUMULATOR AKTIEBOLAGET JUNGNER, 17, Riddaregatan, Stockholm. June 22, 1931, No. 18016. Convention date, July 12, 1930. Void [Published under Sect. 91 of the Acts]. [Class 53.] The positive electrode of an alkaline accumulator consists of a mixture of nickel hydroxide, nickel scales and graphite. The mixture may be made into briquettes which may be used in tubes or plates.
Patent GB-1006700-A (GB)
Title: Remote control apparatus
Inventor: GOODWIN HERBERT JOHN
IPC: B63H21/22
Filed: 1963-05-07
Abstract: 1,006,700. Electric follow-up systems. BLOCTURE CONTROLS Ltd. April 20, 1964 [May 7, 1963], No. 18039/63. Heading G1N. The invention relates to the ship's telegraph control systems of Specifications 986,132 and 986,675 wherein the control handle 2 (Fig. 1) is coupled to the controls of the ship's engine 6 either through a follow-up switch arrangement or by direct mechanical coupling by operation of a lever 26 which disconnects the follow-up servomotor 21 and couples the handle 2 directly to the shafting 3, 5 and is characterized by the incorporation of further switch means to de-energize the servomotor for a predetermined period when a change in the direction of rotation is signalled. Control handle 2 operates follow-up switches in unit 4 to energize servomotor 21 which rotates shafting 5, 5x until the switches in unit 4 are again opened. The portion 5X of the shafting passes through a box 31 and drives a vertical shaft 30 (Fig. 2) carrying two coaxial cam discs 32, 33 associated with switches 34a, 34b and 35a, 35b respectively, and operable by rocker arms 36, spring-biased so that switches 34a, 34b are operable with clockwise movement, and 35a, 35b with anti-clockwise movement of shaft 30 and discs 32, 33. Rotation of shaft 30 first closes switch 34a (or 35a) to energize a time delay unit (not shown) and then closes switch 34b (or 35b) which breaks the circuit to the servomotor 21 for a period determined by the time delay unit. The physical positions of switches 34b, 35b is such that they are only operated when the shafting 5, 5X passes through the angular position corresponding to the neutral position of the control handle, so that the servomotor is only deenergized for a change in the direction of rotation, and not for a mere change in speed.
Patent GB-458481-A (GB)
Title: Improvements in and relating to scotch, parallel fibre or similar feeds attached to carding machines
IPC: D01G15/40
Filed: 1935-06-24
Abstract: 458,481. Feeding-apparatus for carding-engines. SYKES, J., c/o Sykes & Sons, Ltd., E., Krumlin Mills, Barkisland, Halifax, Yorkshire. June 24, 1935, No. 18041. [Class 120 (i)] In a Scotch, parallel fibre, or similar feed attached to a carding-engine 1 a single lattice conveyer 5 in alignment with the carding- engine and approximately at right-angles to the customary transverse lattice conveyer 4 is adapted to pass over three rollers 6, 7, 8 mounted upon or associated with articulated members 14, 15, one of the rollers, e.g. the roller 6, being adapted to rotate the lattice 5, means being associated with the members 14, 15 for reciprocating the lattice, and a tension roller 9, mounted on a shaft 13 in brackets 26, being weighted or geared to move in co-operation with the roller 7 so as to tension the lattice 5 as the carriage 23 is reciprocated across the lattice 4. The roller 6 is driven by a chain 16 from a shaft 18 which carries a disc 19 provided with a stud 20 which is connected by an adjustable rod 21 to a stud 22 on the carriage 23. Specifications 26637/98, [Class 120], and 126,749, [CLass 120 (i)], are referred to.
Patent GB-180792-A (GB)
Abstract: 180,792. Cederholm, H. S. March 16, 1921. Lighting-torches, electric. -In a portable electric igniter of the kind in which fine platinum igniting-wires are carried on wire supports projecting into the batterycasing and adapted to contact with a dry battery inserted through the lower open end of the casing, the battery 2 is retained in position in such a manner as to be readily removable, by means of a split ring 10 sprung into a groove 11 in the internal surface of the casing 1. The top 3 of the casing is provided with a threaded hole to receive a metal plug 6 electrically connected to the metal shell of the battery by the metallic casing 1. Attached to the plug 6 is a wire 7 supporting the igniting- wires 4 which are secured at their lower ends to a wire 5 projecting through' but insulated from the plug 6. The circuit is closed by pushing the battery forward against a spring 9 until its central terminal 8 contacts with the wire 5. The wires 4, 5, 7 are enclosed in a. perforated cover 13.
Patent GB-346223-A (GB)
Title: An automatic device for unwinding reels in printing machines
IPC: B65H23/04
Filed: 1930-06-12
Abstract: 346,223. Feeding-webs. TISON, R. A., 7, Rue Mousset Robert, Paris. June 12, 1930, No. 18081. Convention date, June 18, 1929. [Class 100 (i).] The paper web fed to a printing-machine is unwound from the supply roll by a pair of feed rollers F, F' so as to form a loop J which, upon reaching a certain size, closes an orifice B communicating with a suction pump A and with a cylinder C, the piston D of which is connected to the feed roller F. When the orifice B is closed, the resulting suction formed in the cylinder C causes the roller F to be drawn away from the roller F<1> against the action of a spring E to stop the feed of the web until the orifice B is again uncovered
Patent GB-1135865-A (GB)
Title: Rotary actuator
Inventor: TATOM JAMES WILLIAM
IPC: H02K7/065
Filed: 1967-04-19
Abstract: 1,135,865. Cam mechanism. LEDEX, Inc. 19 April, 1967, No. 18084/67. Heading F2K. [Also in Division H2] Step-by-step rotary motion is imparted to a shaft 24 by a mechanism comprising a reciprocating armature 26 having a flange 38 forming V-shaped teeth 42, Fig. 6, which co-operate with similar V-shaped teeth 44, Fig. 3, on a plate 32 which has inclined recesses 34 accommodating balls 36 which are also located in inclined recesses 30 in a fixed plate 28. On energization of a coil 16 of an electromagnet, armature 26 is attracted thereto causing engagement of teeth 42, 44 and rotary displacement of disc 32 and armature 26 due to the camming action of balls 36. On de-energization of the electromagnet, disc 32 is returned to its original position under the influence of springs 48, Fig. 4. The armature 26 is coupled to a disc 58, secured to output shaft 24, by pins 54 the ends of which are received in a radial slot in the disc 58. The disc 58 may be located angularly by spring-pressed balls 64 engaging flutes 68 in a ring 66 secured to the housing. In a modification, an element 100, Fig. 8, corresponding to flange 38, has four equally spaced teeth 102a, 102b, 102c, 120d which are adapted to co-operate with three equally spaced teeth 104a, 104b 104c on a plate 94, corresponding to plate 32.
Patent GB-1443428-A (GB)
Title: Weatherbar
IPC: E06B7/23
Filed: 1973-04-16
Abstract: 1443428 Weatherbars SCHLEGEL (UK) Ltd 1 Oct 1973 [1 Nov 1972 16 April 1973] 50444/72 and 18126/73 Heading E1J A weatherbar of plastics comprises an elongate body having a flexible fin 6 extending beyond a ridged portion 12 and positioned between the ridged portion and a base 4 which is adapted for attachment. Base 4 has saw-teeth 14 on opposite sides and is located in a groove in a threshold (22), ledges 16, 18 abutting the upper surface of the threshold. Lip 6 is unitary with ridged portion 12, both being resiliently deformable by a closed door. An additional lip 30 deflects rain.
Patent GB-1110281-A (GB)
Title: Semiconductor junction device for generating optical radiation
IPC: H01L33/00
Filed: 1965-04-29
Abstract: A light emitting device consists of a body of compound semi-conductor including a PN junction between two regions one of which includes a central zone provided with an electrode and a surrounding zone of higher resistivity presenting a high impedance to current flow <PICT:1110281/C4-C5/1> towards the periphery of the junction.  In a typical device, Fig. 5, of gallium arsenide the whole of the P-type region is formed in a single operation by diffusion of zinc or zinc arsenide into a silica masked face of an N-type wafer. The diffusant penetrates the oxide to give a low conductivity annular channel between the heavily doped regions 30, 32 formed beneath apertures in the oxide.  The layer is brought to the form shown by a succession of masking and etching steps and the electrodes 52, 54 are formed by vapour deposition followed by alloying. Electrode 52 is of zinc-gold alloy and electrode 54, which short circuits the periphery of the junction, is of nickel-plated antimony-gold alloy.  In a simplified device electrode 54 makes direct contact with channel 34 thus removing the need for zone 32.  In another device (Fig. 11, not shown) the peripheral electrode contacts the N zone only.  In a modification of this the high resistivity channel extends to the edge of the wafer and the peripheral contact is made to the opposite face of the wafer (Fig. 15, not shown).  In the preferred form of device (Fig. 17, not shown) the annular electrode 54 of Fig. 5 is replaced by two annular electrodes, one contacting P+ zone 32 only and the other contacting only the N region on the opposite wafer face.  In all the above devices forward current across the junction periphery is substantially reduced by the high impedance zone and is eliminated where the junction periphery is short circuited.  As a result the light output does not deteriorate with use and the quantum efficiency for low current densities is enhanced.  In the preferred device the quantum efficiency can be made independent of current by applying between the electrodes on the P region a fixed bias sufficient to zero or reverse bias the periphery of the junction. The bias may be provided by a separate battery or by the supply used to bias the centre of the junction.  If desired a signal source may replace the fixed bias to provide a modulated light output.
Patent GB-957243-A (GB)
Title: Water-proof gloves
Inventor: DAVIS JOHN NORMAN SHEARWOOD
IPC: B29C45/14
Filed: 1962-05-11
Abstract: In a process for manufacturing water-proof gloves a fabric glove is impregnated with a vinyl chloride polymer which may be formed from 100 parts by weight of polyvinyl chloride, 100 parts di-alphanyl phthalate plasticizer, 4 parts calcium stearate paste, and 1 part ethyl palmitate as a lubricant. An alternative composition includes 100 parts polyvinyl chloride, 60 parts of a rubbery copolymer, comprising 65 to 80% butadiene and 20 to 30% acrylonitrile and a vulcanising agent, 100 parts di-alphanyl phthalate, 4 parts calcium stearate dispersion, 1 part dibenzthiazyl disulphide, 0.5 parts tetraethyl thiuram monosulphide, 0.75 part sulphur, 5 parts zinc oxide, 1 part stearic acid.
Patent GB-799682-A (GB)
Title: Improvements in and relating to high frequency apparatus
IPC: H01F17/02
Filed: 1954-06-22
Abstract: 799,682. Inductors. N.S.F., Ltd. (Oak Mfg. Co.). Sept. 22, 1955 [June 22, 1954], No. 18269/54. Class 38 (2). [Also in Group XL (c)] High - frequency electrical apparatus comprises an inductive element 1 of silverplated sheet metal which has a plurality of slots 2 therein extending from an edge of the element 1, the inner end of each slot being enlarged into a circular opening 3. The element may form part of the tuning apparatus for television receivers, the tuning being effected by means of a switch, the contacts of which are secured to the element between the slots by means of apertures 4. Specification 779,553, [Group XL (c)], is referred to.
Patent GB-1464660-A (GB)
Title: Process and device for wet-treating fabrics
IPC: D06B3/28
Filed: 1975-05-01
Abstract: 1464660 Liquid treatment of endless cloth loops A THIES JNR 1 May 1975 [4 May 1974] 18276/75 Heading D1L A continuous loop of cloth is treated with a liquid in apparatus comprising, as shown in Fig. 1, a kier 1 containing a rotatable drum 2 for accommodating the cloth, a feeding-in device 5 by which a length of cloth 6 can be fed into the interior of drum 2 by means of a treating liquid fed to ring-shaped chamber 8 of the feeding-in device 5, and a circulation pump 10 for removing treating liquid from the inside of drum 2 and recirculating it to the feeding-in device 5 so that the cloth in the drum is in a non-floating condition. Spindle 3, on which drum 2 rotates, is surrounded by a perforated cylinder 4 and permits introduction of e.g. steam into the drum 2. The cloth 6 is suitably disposed within drum 2 by means of perforated folding device 15. The level of treating liquid 16 is controlled so that no treating liquid is present in the interior of drum 2. The passage of the cloth is further assisted by means of prerunning or motorised winch 17. The kier is also fitted with an air-circulation system comprising heat exchanger 19 and fan 18. Water or chemicals may be added to the treating liquid by means of pump 31, valve 32, cooler 34 and associated pipework. It is preferred to construct the drum in two halves which are axially spaced so as to provide a gap between them where the feeding-in device for the cloth is installed, so permitting the cloth to enter and leave the drum through its peripheral wall.
Patent GB-213180-A (GB)
Title: Improvements in appliances for opening cans and other containers
IPC: B67B7/46
Filed: 1923-07-16
Abstract: 213,180. Norman, R. July 16, 1923. Opening by cutting.- A can-opener comprises a disc or cover 5, Fig. 2, secured to the tin by a spring clip 1 and having a pointed cutter 12 depending from a guide 9 fixed to the cover and within which slides a lever 10 which in its extended position provides leverage for rotating the cover. In a modification shown in Fig. 10, the cover is slotted at 16 and the cutter is attached to the lever forming a single element which can slide along the groove.
Patent GB-188026-A (GB)
Title: Improvements in appliances for delivering substances in powder form
IPC: A47K5/10
Filed: 1921-09-07
Abstract: 188,026. Reeve, J. T. Sept. 7, 1921. Powder distributors. - An opening d in the bottom of the receptacle is adapted to be closed by a valve e carried by the lower end of a spindle f. The upper end of the spindle is formed with a screw thread and is attached to a sliding cover v, a spring w intervening between the underside of the cover and a bridge-piece x arranged within the receptacle.
Patent GB-887448-A (GB)
Title: Mould-carrier casing for the moulding of objects in plastic material
IPC: B29C45/68
Filed: 1960-05-25
Abstract: 887,448. Mould closing devices. FENDENHEIM, F. May 25, 1960 [May 29, 1959; Nov. 5, 1959], No. 18400/60. Class 87(2). A mould carrier casing for an injection mould comprises a jade 8 acting at an angle of approximately 45 degrees between the cover of the casing and a front wall to effect tight closing of the mould within said casing. A fluid operated jack 8 is inclined at 45 degrees to the cover 2 of a mould easing and is actuated to clamp bosses 43, 44 integral with the casing base 1 and the cover 2 between opposed surfaces 41, 42. Jack 8 is mounted on an arm 28 pivoted at 29 to a slide 30 and movement of arm 24 causes the casing to slide to the right and rod 36 to release a valve in the fluid distributer 37 so that the jack is released. Arm 28 is caused by roller 31 to pivot about 29 and pen 35 slides in slot 34 in arm 28 when movement of slide 30 is arrested by stop 40. In the embodiment of Figs. 1 and 2 (not shown), springs connect the cover and base of the easing and in Figs. 3 and 4 (not shown), the upper mould half is rigidly connected to the cover of the easing.