baber/WOPTO huggingface dataset:
Patent GB-633880-A (GB)
Title: Improvements in reservoir writing instruments
IPC: B43K7/02
Filed: 1945-04-19
Abstract: 633,880. Reservoir pens. MARTIN, H. G. April 19 1945 No. 33591/47. Divided out of 633,821. [Class 146 (iiij] In a ball-tip reservoir pen, the reservoir has its walls impervious to ink and air and has at least an area of the walls of such a flexible character as to be capable of responding to diminution in the volume of the reservoir contents and thereby adapting the reservoir capacity to the ink volume, the reservoir being connected to the ball by a feed duct of capillary size. Means for exerting pressure on the ink may be provided which pressure may be removed when the pen is not being used for writing. In one form, the reservoir consists of a rubber cylinder 5 enclosed in a metal sheath 15 and communicating with the ball through a capillary passage 4,4<SP>1</SP>, and closed at the opposite end by a disc 7. A spring 6 extends between the disc and a plunger 8 having a sliding movement in the casing 1 limited by a pin-and-slot connection 9, 10, and is compressed to apply pressure to the ink when a plug 12 on the pointprotecting cap 11 is screwed into the end of the casing. In an alternative construction, a tube connected at one end to the duct 4, 4<SP>1</SP> and open at the other end extends into the reservoir which is in the form of a flexible sac with its open end secured to the point section. Holes in the tube permit the ink to flow to the point and pressure is applied by a spring-pressed ring which presses the sac against the sides of the tube. The spring may extend between the ring and a fixed end of the casing or a plunger 8 may be provided as before. Alternatively a weight may be attached to the end of the spring, so that pressure is applied only when the pen is held with the point downwards. Specification 633,821 is referred to. According to the Provisional Specification, a spring- pressed plunger or compressed air may be used for exerting pressure on the ink. Further, the reservoir may consist of a corrugated metal cylinder or a cylinder with a flexible diaphragm. Moreover the protecting cap may be used to compress the reservoir without the interposition of a spring, and the reservoir may consist of a capillary tube. In another construction, the reservoir and ball are slidable in a casing against the action of a spring so that when pressure is exerted on the point during writing, the spring applies pressure to the reservoir. Specification 629,226 is referred to in the Provisional Specification.
Patent GB-1079065-A (GB)
Title: Photoconductive insulators
IPC: G03G5/085
Filed: 1964-08-18
Abstract: 1,079,065. Photoconductors. RANK XEROX Ltd. Aug. 18, 1964 [Sept. 18, 1963], No. 33626/64. Heading H1K. A sintered photoconductive insulating layer is prepared by forming a layer of CdS, CdSe or Cd S/Se including as an activator Cl, Br, I, In, Ga or mixtures thereof and Cu, Ag, Au, Mn or mixtures thereof, firing the layer in a restricted volume of air to form a polycrystalline sintered layer, washing the layer with deionized water and drying the layer. The layer is preferably washed with acetone before drying. A photo-cell comprises a borosilicate glass substrate 36, a transparent tin oxide layer 37, the sintered photoconductive film 38, a thin insulating layer 39, e.g. of SiO, PVC or ZnS and a layer 41 of Al, Cu, Ag or Au. An electrostatic imaging system (Fig. 6, not shown) may also be made using Nesa glass (47), the sintered photo-conductive film (46), a thin oil film (49), e.g. dimethyl polysiloxane, a PVC insulating layer (48), a layer of SnO or Cu 2 I 2  (51) and a layer (52) of glass or polyethylene terephthalate. According to the direction in which the system is exposed the various layers may be transparent but for X- ray work this is not necessary. On exposure of the system, a charge pattern formed in the photoconductive layer (46) passes through the oil film (49) and is deposited on the insulating layer (48) which may be separated and the pattern read out using an electrometer or developed with electroscopic particles or by frosting. Hydrogenated rosin ester or polystyrene may be used for the insulating layer (48). The photoconductive insulating layer may be prepared by coating a substrate of silica, borosilicate or Nesa glass with an aqueous slurry of the cadmium compound, the activators, e.g. CuCl 2  and a flux of a cadmium halide, firing at 550-600 C., washing and drying in vacuo at 20-150 C.
Patent GB-1103478-A (GB)
Title: Memory elements for digital memory storage systems
IPC: G11C15/02
Filed: 1965-08-06
Abstract: 1,103,478. Associative stores. GOODYEAR AEROSPACE CORPORATION. 6 Aug., 1965 [6 Aug., 1964; 23 Sept., 1964], No. 33723/68. Heading G4C. [Also in Divisions H1 and H3] An associative memory comprises a magnetic storage matrix 202 formed of closed magnetic cores arranged in rows and columns in an external magnetic field which is perpendicular to the path of the remanent fluxes storing bits of information in the cores, means being provided for non-destructive read-out by applying interrogate fields to the cores in a direction parallel to the external magnetic field and for sensing the flux changes produced. The interrogating means is pulsed sequentially from 204 in accordance with a compare word and the output is applied through a compare unit 206 to a " compare core planes section " 209 to determine the address of words in 202 corresponding to the compare word. The desired compare word in 202 may then be selected by a word address register 210.
Patent GB-1303113-A (GB)
Inventor: SPIRA JOEL S
IPC: H05B41/392
Filed: 1970-07-13
Abstract: 1303113 Operating discharge lamps LUTRON ELECTRONICS CO Inc 13 July 1970 [23 July 1969] 33841/70 Heading H2H An operating circuit for a discharge lamp comprises a pulse generator 62 driven by a D.C. or low frequency A.C. source connected in series with a discharge lamp 64 and an oscillating network 63 connected in parallel across the lamp. As shown the oscillating network comprises two inductances 71, 72 in series and in parallel respectively with a capacitor 73, the impedance of the network being such that pulses from 62 cause ringing thereby operating the lamp at higher frequency. A plurality of lamps (100)-(102), Fig. 14 (not shown), may be operated in parallel from a single pulse generator, a suitable circuit for which is described with respect to Fig. 13 (not shown). Alternatively the lamp may be connected in series with a pair of back-to-back thyristors operated by a pulse timing circuit which circuit may be adapted to vary the pulse length or repetition frequency inversely with a varying power input, and a plurality of lamps may be connected in parallel, each in series with a pair of SCR's which may be adapted to conduct current pulses sequentially.
Patent GB-890060-A (GB)
Title: Improved reciprocatory gas compressor and valve therefor
Inventor: TREGANOWAN BERNARD ERIC
IPC: F04B39/10
Filed: 1959-10-07
Abstract: 890,060. Compressor valves. DE HAVILLAND AIRCRAFT CO. Ltd. Sept. 2, 1960 [Oct. 7, 1959], No. 33932/59. Class 8(1). [Also in Group XXIX] A valve closure member for a plurality of ports provided in a reciprocatory gas compressor, e.g. for a refrigeration system, is constituted by a relatively thin plate having an annular rim portion integral with which are tongue portions formed with thickened end portions to overlie the ports. The plate 50 shown in detail in Fig. 4 is for the outlet ports 48 of the compressor, and the centres of the circular thickened end portions 56 of the tongue portions 52, 54 lie on two concentric circles to correspond to the outlet ports 48 provided in a plate 44 backing an inlet valve plate 38 ; the latter is similar to the plate 50 but has the centres of the circular thickened end portions lying on one circle to correspond to the inlet ports 37. The plate 50 is backed by a cylinder cover 66 provided with an outlet passage 64, and this cover and the backing plate 44 have curved portions 60 and 46, respectively, for limiting the movement of the tongue portions of the plates 50 and 38. The compressor has a closed crank case 14 provided with a gas inlet 26, and two oppositely disposed cylinder housings 12 each of which has a cylinder liner 28 spaced from the outer wall of the housing to leave an annular space 30 therebetween, the latter being in communication with the interior of the crank case by means of kidney-shaped ports 36 and with the cylinder space by means of the inlet ports 37 which are in a flange 34 of the liner 28. Since during operation of the compressor the inlet gas flowing through the annular space 30 provides cooling for the piston skirt no lubricant is necessary for the piston 80, the latter having a groove housing three segments of a carbon piston ring 82 which is spring- pressed into engagement with the liner 28.
Patent GB-1537254-A (GB)
Title: Pipe support
IPC: F16L3/205
Filed: 1976-09-29
Abstract: 1537254 Making pipe supports PIPE SUPPORTS Ltd 29 Sept 1976 [15 Aug 1975] 34001/75 Heading B3A [Also in Division F2] A pipe support comprises a generally tubular body 10, a coil spring 18 engaging an abutment 17 at the lower end of the body, a piston 20 engaging the upper end of the coil spring 18, and a rod 21 for connection through a turnbuckle 22 to the pipe, the pipe support being characterized in that the body 10 is substantially polygonal in cross-sections perpendicular to its longitudinal axis. As illustrated, the body 10 comprises two parts 13, each formed by a bending operation, connected by a top plate 11 and the abutment 17. Keys 32 may be used to lock the piston 20 relative to the body 10 during acid cleaning and hydraulic testing of the supported pipe. A plate 38 co-operable with an adjustable nut 27 may be used to place the pipe support in its cold setting position. In a modification of the illustrated pipe support, the single coil spring 18 may be replaced by a pair of coil springs arranged either one within another or in end-to-end relationship.
Patent GB-1383317-A (GB)
Title: Melt spinning of coloured polymers
IPC: D01D1/06
Filed: 1971-07-20
Abstract: 1383317 Coloured polyester fibres IMPERIAL CHEMICAL INDUSTRIES Ltd 6 July 1972 [20 July 1971] 34011/71 Heading C3R At least two filaments or two groups of filaments, each or each group of which is differently coloured are made from polymers of the same predetermined molecular weight by melt spinning comprising the addition of a proportion of colouring material immediately prior to extrusion, the colouring material also being responsible for reduction in the average molecular weight of the polymer, the method being characterized by melt spinning separately first and second portions of polymer to yield first and second filaments or groups of filaments, the colouring material added to each portion of polymer being different in composition and/or proportion and being added to at least all but one of the portions of polymer prior to meltspinning, and adjusting the component polymers to the same average molecular weight by the addition of a proportion of a non-coloured additive. Polyesters, polyamides and polyolefins may be used in the melt-spinning process and they may be coloured with disperse dyestuffs. The non-coloured additives may be mono- or dicarboxylic acids, monohydric alcohols, glycols, alkyl esters of monocarboxylic acids in which alkyl is C 1-4 , dialkyl esters of dicarboxylic acids where alkyl is C 1-4 , phenyl esters of monocarboxylic acids, diphenyl esters of dicarboxylic acids, bis-(#-hydroxyalkyl) dicarboxylates and low molecular weight polyesters up to tetramers. The average molecular weight of polyesters may be raised by adding dicarboxylic acid anhydrides and diisocyanates. Examples describe the mixing of filaments from polyethylene terephthalate and bis-(#-hydroxyethyl) terephthalate.
Patent GB-618993-A (GB)
Title: Improvements in or relating to aerial pick-up devices
IPC: B64D1/22
Filed: 1946-11-18
Abstract: 618,993. Transferring articles to conveyances in motion. LANDRY, M. E. Nov. 18, 1946, No. 34082. Convention date, June 26, 1942. [Class 103 (iii)] [Also in Group XXX] The reel for the pick-up cable used on aircraft for picking up or dropping loads during flight is provided with hydraulic braking means of the fluid friction type which absorbs the shock on the cable without transferring it to the aircraft. The grappling line 3, having a hook 7. is'wound on a drum 8 free on a shaft 9 which is non-rotatably mounted in supports 10, 11. A hydraulic coupling 19 of fluid friction type comprises a shell 20, which is rotatably mounted on the shaft 9 and is rigidly connected to a brake drum 14, and an impeller fast on the shaft 9. The brake band 15 has one end anchored to the base member 12 and the other end connected to a brake lever pivotally connected to the base. An auxiliary winding arrangement for adjusting the position of load, e.g. a glider, consists of a ring gear 22 connected to a flange 13 rotatable on the shaft 9. A pinion shaft 23 in brackets 24 and 25 on supports 10 and 11 has a pinion 26 arranged to slide in and out of engagement with ring gear 22. The movement is effected by a yoke 27 operated by a handle 28 slidably mounted in a bearing 29 in bracket 25. An operating wheel 30 mounted in a pinion shaft 23 rotates the cable reel when the pinion 26 and ring gear 22 are in mesh. An additional cable reel may be installed in the towed glider for picking up succeeding gliders. A speedometer attached to the cable is incorporated.
Patent GB-1514828-A (GB)
Title: Tail rotor arrangement for helicopters
IPC: B64C27/33
Filed: 1975-08-18
Abstract: 1514828 Helicopters SOC NATIONALE INDUSTRIELLE AEROSPATIALE 18 Aug 1975 [19 Sept 1974] 34250/75 Headings B7G and B7W A helicopter anti-torque rotor comprising two blades 5, 6 mounted on a rotor shaft 16 comprises a single star 2 of flat plate form which is clamped to the shaft by a hub structure comprising a member 17 mounted on a frustroconical head 15 of shaft 16 and extended spanwise by flat plates 29, 32. Plates 20, 33 sandwich the central portion of span 2 and are clamped between plates 29, 32 and further superimposed plates 30, 30 on a member 25, the whole being secured together by a bolt 26 threaded into the head 15 and spaced bolts 27, 28. The rotor blades comprise shells 3, 4 secured to the tips of the span 2 and reduced at the root portions into cylindrical sleeves 7, 8 within which are secured flanged collars 9, 10. The inside faces of collars 9, 10 and the outer faces of plates 29, 32 and 30, 33 are formed with circular recesses to accommodate end faces of flexible elastic spools 31 which provide the root connection between the blade shells and the span and also provide the degree of flexibility to enable pitch changing movements to be applied to the blades through a pitch control horn 12 or 13 secured to the flange of a respective collar 9 or 10. The root portion of the blade is enclosed by profiled upper and lower fairings 35, 36 secured by the bolts 27, 28.
Patent GB-1202553-A (GB)
Title: Preparation of polyesters
Inventor: BARKEY KENNETH THOMAS
IPC: C08G63/78
Filed: 1967-07-27
Abstract: 1,202,553. Polyesters. EASTMAN KODAK CO. 27 July, 1967 [27 July, 1966], No. 34550/67. Heading C3R. Polyesters are made by (a) reacting a lower alkyl ester of a dicarboxylic acid (preferably dimethyl terephthalate) with a stoichiometric excess of a glycol (preferably ethylene glycol) in the presence of a zinc compound (20 to 80 p.p.m. of Zn based on the polyester) and a titanium compound (5 to 50 p.p.m. of Ti based on the polyester) to produce a prepolymer having an intrinsic viscosity of 0À1 to 0À45, (b) solidifying and comminuting the prepolymer and (c) effecting a solid phase polymerization of the prepolymer; a phosphorous acid, an ester of a phosphorous acid, a phosphoric acid or an ester of a phosphoric acid (20 to 160 p.p.m. of P based on the polyester) being added to the solid phase when at least 98À5% of the excess glycol has been removed from the reaction mixture. A small proportion of the phosphorus additive may be added during the melt phase.
Patent GB-482530-A (GB)
Title: Improvements in and relating to collapsible display show cards or stands
IPC: B65D5/42
Filed: 1936-12-16
Abstract: 482,530. Collapsable display stands. RECKITT & SONS, Ltd., and STABLER, W. Dec. 16, 1936, No. 34586. [Class 3 (ii)] A collapsable stand for displaying tins and the like comprises a box-shaped member 1 formed with one or more apertures 3 having hinged platforms 4 on which the tins are supported in an inclined position by apertured tabs 6a engaging over their necks. Each platform engages in the recess at the bottom of the tin and the flange 6 on the tin engages in grooves 5 at the sides of the apertures. Fig. 3 shows a modification for displaying a single article in which a display card 10 is supported at the top of the stand by bent-up flaps 11 engaging the sides of the member 1.
Patent GB-1384755-A (GB)
Title: Desulphurisation of molten ferrous metals
IPC: C21C1/02
Filed: 1972-07-24
Abstract: 1384755 Lime ACIERIES REUNIES DE BURBACH-EICH-DUDELANGE SA and RHEINISCHE KALKSTEINWERKE GmbH 24 July 1972 [26 July 1971] 34591/72 Heading C1A [Also in Division C7] A desulphurizing agent for molten ferrous metal is prepared by a two step process consisting of hydrating non-fused quicklime to form calcium hydroxide and thermally decomposing the hydroxide to produce a fine powder. The first part of the process can be effected by the action of steam on lump or coarsely crushed quicklime and the subsequent heating may be at 600-700‹ C.
Patent GB-1398781-A (GB)
Title: Densimeters
IPC: G01N9/12
Filed: 1972-07-27
Abstract: 1398781 Densimeter TORAY INDUSTRIES Inc 27 July 1972 [30 July 1971] 34631/72 Heading G1S A densimeter float comprises a deformable chamber filled with a standard fluid, the fluid  being chosen such that, in use, the coefficients of expansion of the float and the test liquid are equal, whereby the density reading is automatically temperature compensated. The float is hollow to form the chamber, the float being generally of square cross-section and having conical ends. The float may be of stainless steel, titanium, copper alloy, aluminium, p.t.fe., or polyethylene. The standard fluid may be ethanol, methanol, ethanolwater, sulphuric acid, silicone oil or aqueous dimethyl sulphoxide, and may contain fine solid particles. The float may be suspended from a spring, the elongation of which is measured electrically by a coil-magnet system Fig. 1 (not shown). Alternatively the float may be suspended from a balance lever having a counterbalance weight, fine balancing being achieved by a magnetic coupling Fig. 3 (not shown). The float may be used to measure the density and hence the concentration of a methanol in water solution, a dimethyl sulphoxide in water solution or an ethanol in water solution.
Patent GB-918668-A (GB)
Title: Improvements relating to the production of 5-(b-cyanoethyl) hydantoin and glutamic acid
IPC: C07D233/76
Filed: 1961-09-27
Abstract: The invention comprises (1) the preparation of 5-(b -cyanoethyl)hydantoin by reacting b -cyanopropionaldehyde azine or a hydrazone of the formula:-  NC-CH2CH2-CH=N-NRR1, wherein R is hydrogen or a C1-4 alkyl radical and R1 is phenyl or a C1-4 alkyl radical, with ammonium ions, carbonate ions and cyanide ions in an inert polar liquid solvent at a temperature of between 50 DEG  and 150 DEG C.; and (2) the subsequent acid or alkali hydrolysis of the 5-(b -cyanoethyl)hydantoin.  Suitable solvents are water and/or alcohols.  The reaction is preferably conducted in the presence of a bisulphite and in the absence of oxygen.
Patent GB-979155-A (GB)
Title: Gaging device
IPC: B24B49/04
Filed: 1962-09-12
Abstract: 979,155. Grinding. TIMKEN ROLLER BEARING CO. Sept. 12, 1962 [Jan. 2, 1962], No. 34813/62. Heading B3D. [Also in Division G1]  The internal surface of a rotating workpiece W is ground by a rotating wheel 20 and a pneumatic gauge head 42 is positioned in the bore of the workpiece W and shaped so that it does not obstruct the grinding wheel 20. Lubricating fluid is supplied via a tube 50. The size of the bore is indicated by a gauge 78 and the grinding may be stopped automatically when the desired dimension is reached.
Patent GB-1424498-A (GB)
Title: Sealing jaw
IPC: B65B51/14
Filed: 1974-08-07
Abstract: 1424498 Seaming non-metallic sheet material ALTSTADTER VERPACKUNGS - VERTRIEBS GmbH 7 Aug 1974 [8 Aug 1973] 34821/74 Heading B5K A sealing jaw comprises an electricallyinsulating thermally-conductive carrier 1 detachably secured to a mounting 12 and having at least one groove 6, one limb of an L-section electrical heating element 7 in the groove 6, the element 7 extending above the surface of the carrier 1. As shown in Fig. 6, the lower surface of the carrier 1 is provided with a groove 4 for the circulation of a cooling liquid 5. The carrier 1 may be made of surface-anodized aluminium, aluminium oxide or nickel oxide. Two grooves 6 are provided to each receive an element 7, the depth of each groove 6 being greater than the corresponding dimension of the limb of the element 7 which it receives. Preferably, the elements 7, Figs. 4 and 5, are stamped from a single piece of sheet metal, bent over at their edges, and are connected by integral contact pieces 9. Alternatively, separate elements 7 may be connected at their ends by soldered-on metal plates. A gasket 13, Fig. 6, is provided between the carrier 1 and the mounting 12 which are secured together by clamping rails 14, 15 urged together by a screw connection 16. The pressing action of the rails 14, 15 assists the clamping of the elements 7 in the channels 6. The jaw is used in a packaging machine for impulse welding thermoplastic material, e.g. polyethylene, or paper or cardboard coated with thermoplastic material.
Patent GB-911832-A (GB)
Title: An improved fastener
Inventor: SECKERSON CLIFFORD ALEXANDER
IPC: F16C11/04
Filed: 1960-10-11
Abstract: 911,832. Clips; cotters. F. T. PRODUCTS Ltd. Sept. 5, 1961 [Oct. 11, 1960], No. 34835/61. Classes 44 and 89 (2). A fastener 10 consists of a single strip of resilient material sheared and bent to an approximate C-shape so as to have a web 11 and two limbs 12, 13, wherein the web 11 is formed with an aperture 24, the free ends 16, 17 of the limbs are formed with facing cut-away portions 20, 21 and these are sheared and bent from the web, a pair of lugs 25, 26 inclined inwardly and towards the free ends of the limbs. As shown, the fastener is used to secure an apertured lever 27 rotatably upon a pivot pin 29 attached to a member 28, the portions 20, 21 of the fastener engaging below a head 31 of the pin and the lugs 25, 26 engaging against a sloping shoulder 30.
Patent GB-1280241-A (GB)
Title: Improvements in and relating to offset printing machines
IPC: B41F21/00
Filed: 1970-07-20
Abstract: 1280241 Printing apparatus RICOH K K 20 July 1970 [8 Sept 1969] 35029/70 Heading B6C An offset printing machine is arranged to print a predetermined number of sheets from a master on a master cylinder, followed by the passage of a second predetermined number of sheets through the machine while no master is present, and then to print from a second master which has replaced the first on the master cylinder. The result is a stack of sheets which comprises groups of sheets printed from the two masters, separated by a body of blank sheets which acts as a marker.