baber/WOPTO huggingface dataset:
Patent GB-1310448-A (GB)
Title: Electrophotographic liquid development apparatus
IPC: G03D5/00
Filed: 1971-01-01
Abstract: 1310448 Liquid developing apparatus RANK XEROX Ltd 1 July 1971 [2 July 1970] 30799/71 Heading G2H An electrostatic latent image bearing sheet 100 is fed past an electrode roller 101 spaced therefrom. In Figs. 2, 3, 4 (not shown) a plurality of electrode rollers is provided. Developing liquid is supplied from a nozzle 107. In Figs. 1, 2 sheet 100 is fed by roller pairs; in Fig.3 multiple small rollers (311-315) co-operate with a single large roller (320) to feed the sheet; and in Fig. 4 the sheet is fed by a row of rollers (411-415) cooperating with an endless belt (420). Preferred materials for the rollers are given.
Patent GB-705593-A (GB)
Title: A method and apparatus for partially recovering the sulphur content of iron pyrites
IPC: C01B17/027
Filed: 1950-12-18
Abstract: <PICT:0705593/III/1> A shaft furnace intended for extracting loosely combined sulphur from finely divided sulphide ores by counter-current heating with inert gas, e.g. sulphur dioxide or nitrogen, comprises a narrow shaft 3 fed from an inlet having a valve 6 and a flange 5 for the air-tight connection of ore containers and discharged by a rotating drum 7 through a narrow slot 8 into a container 9 closed by a flap valve 10 and formed with a flange 11 for the attachment of closed containers, the inert gas being supplied by a fan 12 and circulated through the shaft 3 on the cross-draught principle. Incoming gas passes successively, across the lower part of the shaft through louvred openings defined by grate bars 18 thus cooling the treated ore, through a heating chamber 19 containing electric heating elements 20, across the upper calcining section of the shaft in which it picks up volatilized sulphur, around and in heat exchange relationship with a metal casing 4 forming the extreme upper section of the shaft, and, via a pipe 22, to a cooler 23.  Liquid sulphur condensing in the cooler is led off through a liquid seal 24 and the inert gas is re-circulated by the fan 12.  Specification 650,202 is referred to.
Patent GB-408898-A (GB)
Title: Improvements in electric discharge tube signs
IPC: G09F13/26
Filed: 1933-11-06
Abstract: 408,898. Electric discharge tube signs. PATENT-TREUHAND-GES. FUR ELEKTRISCHE GLUHLAMPEN, 11, Ehrenbergstrasse, Berlin. Nov. 6, 1933, No. 30832. Convention date, Nov. 11, 1932. [Class 3 (ii).] In an electric discharge tube shaped as a sign, the limbs of the tube forming dead ends and which are to be illuminated are provided with a longitudinal partition extending almost to their ends. As shown, in a tube shaped as the letter E, the arm 7 is provided with a partition 4 along the sides of which the discharge passes.
Patent GB-682909-A (GB)
Title: Improvements in or relating to brick making machinery
Inventor: BURT JOHN HARRY
IPC: B28B1/04
Filed: 1950-12-19
Abstract: 682,909. Eccentric presses for tamping clay &c. DUNBRICK, Ltd. Dec. 19, 1950, No. 30971/50. Class 87 (ii). Relates to brick-making machines in which clay or other material is tamped in moulds, e.g. a succession thereof on a conveyer, and comprises a frame oscillated by an eccentric inside a chamber in the frame, means being provided for excluding dust or powder from the chamber. The frame 2, to which the tampers are attached at 17, is carried on a shaft 2 and oscillated by an eccentric 25 which engages bearing plates 28 on opposite inner walls of the chamber 10. The chamber is closed at the top by a cover 12 but has in each end plate 11 an opening 24 for the shaft 21 on which the eccentric is mounted, which opening is arcuate to allow for the'oscillations. To prevent ingress of dust through the arcuate slots there is, at each end of the chamber 10, an assembly comprising a packing ring 31 of, e.g., leather, large enough to include the whole opening 24 over its entire range of movement and held against the outer surface of the plate 11 by being mounted on a ring 30 which can slide on the rounded edge of an apertured plate 29 and is urged towards the plate 11 by a spring 32. The spring is enclosed by bellows 34 held in place by spring rings 35. A trowelling member is connected to the oscillating frame by a link 19, or may be fixed between the tamping member 17.
Patent GB-366008-A (GB)
Title: Improvements in high-compression internal combustion engines
IPC: F02B19/08
Filed: 1930-10-16
Abstract: 366,008. Oil engines. WEBER, M. E., 79, Rue des Plantes, Paris. Oct. 16, 1930, No. 31016. Convention date, Oct. 22, 1929. [Classes 7 (iii) and 7 (iv).] In an engine in which intimate mixing of the fuel and combustion air is produced by whirling the air charge, an ignition device 11, Fig. 2, or 11c, Fig. 7, is located near the fuel injector 8 but in a position such that the fuel will reach it only after the air stream has carried the combustible around the combustion chamber, thereby ensuring adequate mixing before ignition occurs. The igniter may be carried by the cylinder head in the alternative positions shown at 11c or 11d, Fig. 7, on the piston, or on the cylinder wall, as shown in Fig. 2 ; it is preferably made from a catalytic or easily oxidizable metal such as copper, nickel, chromium aluminium, cerium or vanadium and is thermally insulated from the cylinder by a sleeve 12. The igniter may be heated electrically for starting. A ring of metal which is a good heat conductor may be fitted in the upper end of the cylinder, in contact with the cooled walls so that its temperature remains below that of spontaneous ignition. According to the Specification as open to inspection under Sect. 91 (3) (a) the top surface of the piston may be made of either of the materials referred to above to act as an igniter. This subject-matter does not appear in the Specification as accepted.
Patent GB-964682-A (GB)
Title: Photographic shutter
IPC: G03B9/22
Filed: 1962-08-13
Abstract: 964,682. Camera shutters. AGFA A.G. Aug. 13, 1962 [Aug. 30, 1961], No. 31034/62. Heading G2A. In a pivoted blade everset shutter, the blade driving mechanism and the speed-regulating mechanism can be brought into engagement by a spring element of one of them, which element yields on initial contact and recovers in an engagement position. In the form shown, the shutter is set by rotating the ring 2, which in turn entrains the ring 3 by means of engaging lugs 6, 7 in the direction of arrow 8. A coupling element 9 on ring 3, having an inclined portion 10, comes into contact with a pin 13 displaceable vertically in a lever 14, and biased downwards by a blade spring 21. Before the completion of the setting movement, the coupling element 9 has moved under and past the pin 13, so that the latter, loaded by its spring, falls behind the edge 12 of element 9. Lever 14 forms a connecting means to the shutter speed regulating mechanism, a pin 15 on the lever moving in a slot 16 of a miniature fly-wheel 11 forming part of the said mechanism. When, on completion of the setting movement, the rings 2, 3 are released, ring 2 runs down under the action of spring 4 to open the shutter blades. The running down of ring 3 is delayed until the speed regulating mechanism has run down, during which time lever 14 has rotated on its pivot 17 to bring pin 13 clear of edge 12. At this point ring 3 is also released to run down, and so close the shutter blades again. The invention could also be applied to shutters having a single ring with a to-and-fro movement.
Patent GB-885051-A (GB)
Title: Knockdown packing case or like container
IPC: B65D6/00
Filed: 1959-09-11
Abstract: 885,051. Collapsible boxes. STARWOOD INDUSTRIES Inc. Sept. 11, 1959 [Sept. 23, 1958] No. 31080/59; Class 18. A knockdown packing-case 10 comprises sidewall panels 11-14 having interlocking rabbeted side edges 17 and rabbeted end edges 21, end wall panels 15, 16 provided with slots 20, interlocking with projections in the sidewall end edges 21 so as to close the case's open ends, and means e.g. strap 28 passing through holes 26 to secure the panels in interlocking relationship. The lower end edges of the sidewall panels 11 and 13 have elongated projecting portions 22a, to either side of which are secured blocks 23 by bolts 24 with a spacer 25 therebetween. In a modification, the end wall edges are complementarily rabbeted so as to interlock with the sidewall end edges, and the case is secured together by screws. In a further modification, see Fig. 9, the sidewall and end wall edges are rabbeted to interlock and the end wall panels are secured together by accentral tie rod having a head 217a at one end and a nut at the other ; this case is suitable for packing a role of sheet material carried on the tie rod by core adapters, and is strapped as at 225.
Patent GB-646493-A (GB)
Title: Valve for a hydraulically operated copying milling machine
IPC: B23Q35/18
Filed: 1945-11-19
Abstract: 646,493. Copy-milling machines. TURCHAN, M., and WALKER, C. Nov. 19, 1945, No. 31104. Convention date, July 1, 1942. [Class 83 (iii)] [Also in Group XXIX] The direction - control valve B employed in the hydraulic copymilling machine described in Specification 646,494 is provided with a valve C<SP>1</SP> for reversing the supply of constant-pressure fluid to the particular feed cylinder giving the leading motion. The valve C<SP>1</SP> is attached to the end of the valve B and the constant-pressure fluid connections are made to it at 38 and 39. Within the valve is a shaft 33 rotatable by a handle 34 and slotted at 35, 36. In the position shown in Fig. 2, the constant-pressure supply through 38 is directed through 35 to a passage 40 communicating with a passage in the valve B by which it is directed to the appropriate cylinder. Fluid returning from the cylinder through the valve B passes through 42 and 36 to 39. By rotating the valve shaft 33 by a quarter turn, the constant-pressure flows are reversed. The operation of the combined direction and reverse valve in a machine similar to that of Specification 646,494, but not having an exhaust throttle valve or a third, vertical feed cylinder, is described in detail in the Specification.
Patent GB-1107327-A (GB)
Title: Polyester moulding materials which are stable in storage
IPC: C08K3/16
Filed: 1965-07-22
Abstract: An unsaturated polyester resin capable of being cured in the cold after the addition of a peroxide comprises an unsaturated polyester, a polymerizable unsaturated monomer, a tertiary aromatic amine as a curing accelerator and 1 to 50 p.p.m. of copper in the form of a compound of monovalent or divalent copper as a stabilizer. Copper compounds mentioned are copper (I) chloride and copper (II) chloride, acetate, maleate, naphthenate, oleate, octoate, o-aminobenzoate, phthalate, tartrate and chelate complexes with acetoacetic ester, malonic ester, acetylacetone; salicyl aldehyde, salicyl aldoxime, anthranilic acid, benzoin oxime, cupferron, nitriloacetic acid or ethylene diamine tetracetic acid or amine complexes with primary, secondary or tertiary amines.  Tertiary aromatic amines mentioned are N,N-dimethyl-aniline; N,N - diethylaniline; N,N - dimethyl - p - toluidine; N,N - diethyl - p-toluidine; N,N - bis - (b  - hydroxyethyl) aniline; N,N - bis (b  - hydroxyethyl) - cumidine; N,N - bis - (b  - hydroxyethyl) - p-toluidine; N,N - bis - (hydroxypropyl) - p-toluidine and N - methyl - N - b  - hydroxyethyl-p-toluidine.
Patent GB-217510-A (GB)
Title: Improvements in and relating to milking machines
IPC: A01J5/04
Filed: 1923-12-12
Abstract: 217,510. Sabroe, A. Dec. 12, 1923. Cow-milkers. - A teat cup for use with a suction milking-machine has a detachable lower portion formed with a cylindrical recess 6 in which a plunger 9 reciprocates, the plunger 9 engaging a diaphragm D adapted to close, the outlet 2 of the teat cup. The diaphragm is secured between The detachable bottom and the main portion of the cup, being provided with thickened edges 3 and with a strengthened middle portion to engage the plunger and the edges of the outlet 2. To prevent wear annular inclined bearing surfaces are formed on the lower portion and the main portion of the teat cup where the diaphragm engages these parts. A recess is formed in the plunger to engage a guide knob on the diaphragm. Small passages 16 are formed in the diaphragm and longitudinal passages 10 extend along the plunger. The passages 16 may lead directly to the passages 10 or indirectly through passages or chambers formed in the top of the plunger. In a modification the diaphragm is situated at the lower end of the recess 6.
Patent GB-174759-A (GB)
Title: Improvements in gas stoves
IPC: F24C3/02
Filed: 1920-11-04
Abstract: 174,759. White, W. Nov. 4, 1920. Gas cooking-stoves; ovens; baffles.-A gas cooking-stove designed for use with the burner described in Specification 21038/13 comprises a bottom plate c having an opening closely fitting the burner a so that only hot gases are admitted, the gases being then checked by a baffle d and divided in any desired proportion between the interior of the oven and external side flues by the appropriate use of plain and perforated oven shelves. The gases after leaving the open and side flues enter a hot plate chamber 'having coned pot wells perforated at the top and eventually escape by perforations k at the back. The air for combustion is supplied through a secondary oven a<2>. Specification 23033/10 also is referred to.
Patent GB-643895-A (GB)
Title: Improvements in conveyor mechanism
IPC: B65G25/00
Filed: 1947-11-28
Abstract: 643,895. Step-by-step conveyers. FALLON, J. Nov. 28, 1947, No. 31490. [Class 78 (i)] [Also in Group XII] A step-by-step conveyer mechanism, particularly for transporting tubes or bars through a vertical slot furnace, comprises pairs of parallel spindles each having a series of spaced ledges mounted thereon, each pair of spindles being adapted for reciprocation of the spindles relative one to the other alternating with a rotation as a pair whereby successively to transfer the work from the ledges of one spindle to the ledges of the other spindle of the pair and thereby intermittently progress the work. The slot 6 of a furnace, shown in plan, Fig. 3, is provided in one of its walls with a plurality of semicircular recesses 7 within which divided shafts 8 are vertically disposed, each shaft comprising two spindles 8a, 8b, on which half-discs 9a, 9b are mounted. The lower ends are in a bearing 10, Fig. 5, and the upper ends enter a casing 17 in which they terminate as racks 11a, 11b, Fig. 4, meshing with a common pinion 12. Rack 11b is extended by spindle 13 which has a cylindrical rack 14 meshing with a segment 15 keyed to a shaft 16, to which an intermittent oscillatory rotation is given, such that one spindle is moved relative to the other a distance equalling the separation of the ledges followed by a rest, and then the reverse movement. During the rest periods an intermittent rotation of the pair is similarly given by means of a worm-wheel 20 on an extended part of the casing projecting through a bearing 18, and a worm 21 suitably intermittently rotated. This rotation is 180 degrees in extent. Guides 17a maintain spindles 8a, 8b in fixed angular relation to casing 17. Shaft 16 through links drives a feed conveyer 33, which feeds tubes to the top half-discs of all the spindles 8, which are simultaneously actuated. Vertical guides 6a locate the tubes centrally of the slot whereby they are supported on only one of the spindles 8a, 8b at a time. Fig. 5 gives the stages of lowering, during which the tubes are alternately lowered and transferred to the ledges of the other spindles of the pairs. At the lower end of the slot the tubes are delivered on to rollers 35 on shafts 34, each driven from a shaft 36, Fig. 3, through bevel gearing 37. According to the Provisional Specification, pinion 12, instead of shaft 16, may be driven.
Patent GB-504843-A (GB)
Title: Improvements relating to the manufacture of air-screws
IPC: B27M3/10
Filed: 1937-11-16
Abstract: 504,843. Screw propellers. DE HAVILLAND AIRCRAFT CO., Ltd., and KING, E. P. Nov. 16, 1937, No. 31499. [Class 114] An air-screw blade which is mounted at its root in a ferrule is reinforced at the root by non-metallic lamine of filament or thread form. The blade is made up of non-metallic laminµ 10 of resin impregnated wood with interposed reinforcing sheets of fabric 11 which are also impregnated with resin. At the root ends the fabric 11 is bent at 12, the double portion extending some way back along the root again. The whole assembly is shaped in a hydraulic press and because of the laminµ arrangement the density of the material at the root end is increased. The fabric interleaves are preferably formed with the warp running longitudinally of the blade and preferably the ratio of warp to weft is 8 to 1. The wood lamine is preferably of 2 mm thickness and the woven fabric is from 0'5 to 1 mm. thick. The root has a cylindrical shape and is provided with a screw-thread to take a buttress thread 17 formed on the inside of a ferrule 16. In order to assemble these two parts, the sleeve or ferrule is heated in a steam chamber or otherwise heated and when hot is internally coated with a synthetic resin ; at the same time the blade itself is cooled, by immersion in liquid air or solid carbon-dioxide or other cooling medium and it is provided with a covering of synthetic resin or the like. The two parts when assembled with these temperature differences result in the ferrule being very tight on the blade at normal temperatures.
Patent GB-1236494-A (GB)
Title: Improvements in or relating to phase difference detectors
Inventor: WHITE COLIN GRAHAM
IPC: H03K5/26
Filed: 1969-06-23
Abstract: 1,236,494. Pulse coincidence circuits. MARCONI CO. Ltd. 10 Feb., 1970 [23 June, 1969], No. 31505/69. Heading H3P. A phase difference detector for detecting when the phase difference between two waves, e.g. from sources 1, 2 exceed a predetermined amount comprises a delay element 21, a J-K flip-flop or other bi-stable circuit 4, to whose data inputs 3, 6 are applied a delayed wave, e.g. from source 1 and a wave inverted after delay while to the sampling input is applied the other of the two waves from source 2. A second J-K flip-flop 9 may be provided to whose data inputs 8, 11 are applied a delayed wave from source 2 and a delayed wave which is inverted at 10, and to the sampling input 13 is applied a wave from source 1. An output of " 1 " appears at 14 or 15 when the phases of waves from 1 or 2 leads the other by more than the delay of elements 2 or 7 and the bi-stable sampling time. Fig. 2 (not shown) indicates an inter-connected arrangement of NAND gates forming a setreset bi-stable circuit usable instead of J-K flip-flop circuits 4 or 9.
Patent GB-638765-A (GB)
Title: Improvements in multi-layer stripping films and process for the production thereof
Inventor: COOTE JACK HOWARD
IPC: G03C1/805
Filed: 1947-11-28
Abstract: 638,765. Colour photography. BRITISH TRICOLOUR PROCESSES, Ltd. Nov. 28, 1947, No. 31569. [Class 98 (ii)] A multilayer stripping film comprises-a support carrying on one side at least two silver halide emulsion layers sensitized to different parts of the spectrum, such silver halide emulsion layers being separated by a layer comprising a hydrophobe copolymer of vinyl chloride and vinyl acetate. Preferably, the copolymer has a molecular weight of about 10,000, and contains about 85.88 per cent of polyvinyl chloride; and may also contain, interpolymerized therewith, a small amount of an aliphatic hydroxy dicarboxylic acid such as malic acid. The copolymer may be applied to an existing silver halide emulsion layer in solution in a mixture of acetone and benzene and the solvent evaporated off at a low temperature. Subbing layers as of gelatine with chrome alum may be applied to the copolymer layer before coating the next silver halide layer. A three-layer film may have a cellulose nitrate base with red-, green- and blue-sensitive silver halide emulsion layers and interposed copolymer layers and subbing layers, with a yellow filter dye in either the copolymer layer or the subbing layer, which underlies the blue sensitive layer. After exposure, the upper emulsion layer, and then the next succeeding emulsion layer, can be developed, copied using the infra-red technique described in Specification 638,308, and then stripped off, the copolymer being impermeable to developers.
Patent GB-428386-A (GB)
Title: Improved method of producing visible finger or like imprints
IPC: A61B5/117
Filed: 1933-11-13
Abstract: 428,386. Preventing fraud. HEINECKE, W., 33, West 63rd Street, New York, U.S.A. Nov. 13, 1933, No. 31588. [Class 16] [See also Groups XVI and VIII] Finger and like impressions for fraudpreventing purposes are obtained by treating a record material with a colourless compound of the aromatic hydrocarbon series, and bringing into contact therewith the finger or other object of which an impression is required, the finger &c. having been previously treated with a substance capable of reacting with the colourless compound to produce a visible imprint. The record material is preferably a roll or sheet of paper coated or impregnated with the compound dissolved in a volatile solvent such as an alcohol, an organic acid, a methyl or ethyl ester or ether, a ketone or an aldehyde ; a binding material such as nitrocellulose, resin, or acetyl cellulose may be added to the solution. The compound is preferably one of the benzene or naphthalene series having two or more hydroxyl groups attached to the nucleus. The finger &c. is first applied to a pad, ribbon, or the like impregnated with a reagent dissolved in a non-drying solvent such as glycerine, and is then pressed on the record material. Suitable compounds and reagents are trimethyl ether of phloroglucin carboxylic acid and ferric chloride, capsulaescic acid and ferric chloride, sappanin and ferric chloride or potassium chlorate, dihydroquinone or phenyl derivative of hydroxylamine and ferric chloride, and 3 : 4 : 5- trihydroxybenzoic ethyl ester or a trihydroxybenzoic acid and an iron or vanadium salt.
Patent GB-1107859-A (GB)
Title: Apparatus for stirring molten metal
IPC: H05B6/34
Filed: 1965-07-24
Abstract: A polyphase electromagnetic stirrer comprises a plurality of coils wound around a ladle of molten metal and spaced from each other along the vertical ladle axis, the coils progressively varying in electrical phase angle.  For each phase of supply there is a set of two coils wound to produce opposite polarity, the coils of each set being separated by a coil of each other set, the consistent phase progression of the coils adding up to a complete cycle of the electric supply.  Equations are given for the depth of current penetration into the molten metal and the ladle, the thickness of the ladle and of a liner around which the coils may be wound, the ratio of axial length to diameter of the coils, and the spacing between oppositely polarized coils with the same phase connection.
Patent GB-231912-A (GB)
Title: Improvements in or relating to valves
IPC: F16K15/02
Filed: 1923-12-18
Abstract: 231,912. Forrest, J. A. Dec. 18, 1923. Valves and valve seats, arrangement of. -A check valve particularly applicable to oil lubrication pumps, has the body formed in two parts, one having the valve seating at its projecting extremity, and the other containing the valve spring. The two parts 1, 4 are secured together at 2, a seating 3 being provided for the closure member 8. A spring 10 is housed in a recess in the part 4. Reference has been directed by the Comptroller to Specifications 29000/96, [Class 51, Furnaces and kilns], and 13309/03, [Class 7, Air and gas engines].