baber/WOPTO huggingface dataset:
Patent GB-1406320-A (GB)
Title: Apparatus for aligning co-acting hitch members on respective separate vehicles
IPC: B60D1/38
Filed: 1972-11-03
Abstract: 1406320 Apparatus for facilitating coupling of a towing vehicle to a trailer M I SALMI 3 Nov 1972 [3 Nov 1971] 48982/72 Heading B7T Apparatus for facilitating coupling of a towing vehicle 12 having a ball hitch member 14 to a trailer 16 having a socket hitch member 18 comprises on the trailer a housing 22 which contains a pulley 64 on an axle 62 and which is biased by a spring 66 to wind a line 24 thereonto, the line having at its free end an attachment member 26 for connection with a hook on vehicle 12 when coupling is to be carried out and which with the aid of sensing means 58 and 32 which detect the relative horizontal and vertical positions of the hitch members serves to guide the approach of the towing vehicle to the trailer. The means 32 consists of a parallelogram of pivoted members 34, 42, 46 and 52 which after spirit level member 42 has neen set to the horizontal and the members clamped to prevent pivoting detects movement of the line 24 from the horizontal and therefore vertical deviation between the towing vehicle and trailer. The movement from the horizontal is detected by mercury switch member 46 and conductors 48 to transmit a signal to indicating means in the drivers view and/or a jack 20 to raise or lower the trailer and return the line to the horizontal. Horizontal deviation between the hitch members is detected by means 58 due to movement of the line 24 in the horizontal plane which will cause either of pivoted arms 92, 94, to actuate a limit switch 114 or 116 and send a signal indicating the deviation to the drivers view. The sensitivity of means 58 is increased as the towing vehicle approaches the trailer since axle 62 drives a parallel axle 74 by belt 70 and causes the latter axle to move vertically, placing a V-shaped member 80 between the line 24 and levers 92, 94 Fig. 7 (not shown). The distance between the towing vehicle and trailer is detected by limitswitches 84, 86 having detectors 88, 90 which extend into the pulley, switch 84 being first actuated as the line is wound on to the pulley to give a warning to the driver, and switch 86 being actuated second to actuate a stop signal.
Patent GB-1162394-A (GB)
Title: Telephone System
IPC: H04M7/14
Filed: 1966-11-02
Abstract: 1,162,394. Automatic exchange systems. TELEFONAKTIEBOLAGET L.M. ERICSSON. 2 Nov., 1966 [2 Nov., 1965], No. 49229/66. Heading H4K. In a system including a number of remote satellites individually connected by data links and speech channels to a computer controlled central exchange, some at least of the satellites are connected to each other, whereby in the event of a failure in a direct connection from one of the satellites to the exchange, data for this satellite can be routed via one of the other satellites. The data consists, for example, of cross-point operation instructions and each such instruction is preceded by the identity of the satellite for which it is intended and is sent over the direct data channel and also simultaneously via (part of) the alternative route. Normally, the intersatellite connections only carry synch. pulses and must be seized for use by the satellite having a faulty direct connection, whereby the simultaneous data appearing at the nearest non-faulty satellite can be directed on to the correct intersatellite connection.
Patent GB-1474233-A (GB)
Title: Method of drying a polymer gel
IPC: C08F6/00
Filed: 1974-05-02
Abstract: 1474233 Drying polymers from polymer gels NITTO KAGAKU KOGYO KK 2 May 1974 [2 May 1973] 49400/76 Divided out of 1474232 Heading C3P A polymer gel is extruded through a perforated plate, the gel being cut by a knife acting along the inner or outer surface of the perforated plate, to form a plurality of aggregates of mutually adhering globules of gel; and the aggregates are then dried by hot air under the application of shearing forces so as to avoid forming a single mass of gel and to provide the maximum drying area. The preferred apparatus for the second step is a rotary cylindrical hot air drying machine. The process is especially suitable for the manufacture of polyacrylamide granules.
Patent GB-1344895-A (GB)
Title: Plate heat exchanger
IPC: F28F3/08
Filed: 1971-10-25
Abstract: 1344895 Plate heat exchangers W K F SCHMIDT 25 Oct 1971 [23 Oct 1970] 49455/71 Heading F4S In a plate heat exchanger comprising an arrangement of ported plates 2, 3, 4, 5 and 6 and interposed sealing gaskets clamped between end-plates 1 and 7 to define alternate flow spaces for first and second heat exchange fluids which enter and leave the stack through ports 8 in the end-plate 1, the first plates 2, 3, 4 of the stack have four ports 8 while the last plates 5 and 6 have only two. All four ports in the first plate 2 are surrounded by sealing rings 9 whereby no fluid enters the space defined between the plates 1 and 2. Further sealing rings 9 are arranged as shown to ensure correct distribution and collection of fluids to and from the respective flow spaces.
Patent GB-1209755-A (GB)
Title: Photographic supersensitised silver halide emulsion
IPC: C09B67/32
Filed: 1967-10-31
Abstract: 1,209,755. Bis-(pyrimidinylamino) stilbenes. FUJI SHASHIN FILM K.K. 31 Oct., 1967 [2 Nov., 1966], No. 49494/67. Heading C2C. [Also in Divisions C4 and G2] Di - sodium 4,4<SP>1</SP> - di - (4,6 - dichloropyrimidin- 2 - ylamino) - stilbene - 2,2<SP>1</SP>- disulphonate is prepared by mixing an aqueous acetone solution of di - sodium 4,4<SP>1 </SP>- diamino - stilbene - 2,2<SP>1</SP>- disulphonate with 2,4,6-trichloropyrimidine at 55-65 C. Di - sodium 4,4<SP>1</SP>- di - {4 - (naphth - 2 - ylamino) - 6 - (phenylamino) - pyrimidin - 2 - ylamino} - stilbene - 2,2<SP>1</SP>- disulphonate is prepared by heating under reflux a solution of the compound prepared above and #-naphthylamine in dimethylformamide in a nitrogen atmosphere and heating the resulting product under reflux in aniline and then adding the reaction product mixture to methanol to precipitate the desired product.
Patent GB-1097754-A (GB)
Title: Chemical heating device in sheet form
IPC: F24V30/00
Filed: 1964-12-04
Abstract: An exothermic heating device in the form of a thin flexible sheet comprises a powdered exothermic mixture bound by asbestos fibres, with or without glass fibres, to form a paper-like sheet. The fibre content should 2 to 20% by weight of the exothermic mixture, which may be: iron and sulphur; iron, lead and sulphur; lead and sulphur; iron, zinc and sulphur; iron oxide or lead oxide and calcium silicide; aluminium, silicon and lead chromate. Where iron and sulphur are used, their proportions may range from 75 : 25 to 65 : 35.  The sheet may be mesh-like and may be laminated between two asbestos fibre sheets, or several heating sheets may be laminated. The sheet is made by mixing the exothermic mixture with water or a suitable organic liquid, e.g. methanol, adding the fibres, and treating the slurry so formed conventionally.  Seven specific examples are described.ALSO:An exothermic heating device in the form of a thin flexible sheet comprises a powdered exothermic mixture bound by asbestos fibres, with or without glass fibres, to form a paper-like sheet. The fibre content should be 2% to 20% by weight of the mixture, and the sheet may be perforated and may be laminated between two asbestos fibre sheets, or several heating sheets may be laminated, where both glass and asbestos fibres are employed, the asbestos should comprise at least 1% by weight of the exothermic mixture, and where the heating sheet is laminated between two asbestos fibre sheets, these outer sheets may contain not more than 90% by weight of glass fibres.  The sheets may be made by mixing the exothermic composition with water or a suitable organic liquid, e.g. methanol, adding the fibres, and treating the slurry so formed conventionally (filtering, drying).  Seven specific examples are described.  The exothermic mixture may be:-iron and sulphur; iron, lead and sulphur; lead and sulphur; iron, zinc and sulphur; iron oxide or lead oxide and calcium silicide; aluminium, silicon and lead chromate.  Where iron and sulphur are used, their proportions may range from 75:25 to 65:35.
Patent GB-1120509-A (GB)
Title: Improvements in or relating to gunn effect pulse generators
IPC: H03K3/02
Filed: 1966-11-04
Abstract: 1,120,509. Gunn effect oscillators. TELEFUNKEN PATENTVERWERTUNGS G.m.b.H. 4 Nov., 1966, No. 49651/66. Heading H3T. [Also in Division H1] A circuit for generating pulse trains or interrupted pulse cycles comprises a Gunn effect oscillator element on which is formed at least one PN junction connected in a feed back line so that oscillations generated by the element are rectified and applied to the same element or another element to reduce the bias on that element below the critical level and thereby interrupt its oscillation. A preferably variable time delay element is included in the feedback line to control the length of the trains or cycles. When two elements are employed they are preferably formed epitaxially as parts of a single body, the first element being biased so that it oscillates and the second receiving a normal bias below the critical level and a triggering voltage derived from the first. Rectified voltage from the second element is fed back to interrupt the oscillation of the first.
Patent GB-1446072-A (GB)
Title: Furnaces for solid fuels
IPC: F23H13/08
Filed: 1973-04-17
Abstract: 1446072 Ash removal devices C O A EKMAN 17 April 1973 [17 April 1972] 49696/75 Divided out of 1446071 Heading F4B Ash from below the grate of a furnace of the type described in the parent Specification 1,446,071 is fed to a trough from whence it is removed by a screw conveyer 26a by pocketed rotary valves 71 mounted below slots 75 formed in a thickened portion of the air distribution chambers. The valves 71 each have a single pocket extending the full length of the valve, and the thickened portion of the furnace wall is shaped to follow closely the contours of the valves. The valves and the ash conveying screw 26a are synchronized.
Patent GB-1159180-A (GB)
Title: Dibenzoxazolyl Thiophenes and their use as Optical Brightening Agents
Inventor: CRESSMAN HOMER WILLIAM JOHN
IPC: C07D409/04
Filed: 1967-11-02
Abstract: 1,159,180. Photographic materials containing ultraviolet absorbers. EASTMAN KODAK CO. Nov. 2, 1967 [Nov.3, 1966], No.49908/67. Heading G2C. [Also in Division C2] Compounds of the general formula I in which Z 1  and Z 2  each represent a hydrogen atom, an alkyl group or an aryl group and the groups R 1  - R 8  each represent a hydrogen atom or an alkyl, phenalkyl or cycloalkyl group so that atleast two of the groups R 1  - R 4  and at least two of the groups C 5  - C 8  are other than hydrogen, are used as optical brightening agents in photographic materials. They may be incorporated in a hydrophilic colloid layer coated over at least one light-sensitive layer or in a layer under at least one light-sensitive layer. They may also be used as ultraviolet absorbers in photographic silver halide materials. They may be incorporated in colour-photographic materials which contain colour-forming couplers or in such materials in which the images one found by colour development with colour-forming couplers contained in the developing solution. They may also be used to protect and brighten colour-photographic elements of the type used in silver-dye-bleach processes. They may also be used as ultraviolet absorbing materials in diffusion transfer processes, such as, for example, processes in which colourphotographic records are reproduced by transferring either solubilized or coupler-developed dyes for a light-sensitive element to a receiving sheet.
Patent GB-1402923-A (GB)
Title: Brakes
IPC: F16D55/00
Filed: 1972-10-30
Abstract: 1402923 Full-face disc brakes H KLAUE 30 Oct 1972 [29 Sept 1972] 49966/72 Addition to 1255450 Heading F2E Each pair of non-rotatable but slidable brake shoes in the modified disc brake consists of two semi-circular members, e.g. 206 3 , 206 4 , the flank edges of which are vertical and abutting, and each of which members is provided with an outwardly-projecting shoulder, e.g. 208. The shoulders engage brackets 209, 210, which are removable for replacement of the brake shoes without dismantling the brake operating mechanism. The brake shoes are forced outwards against rotary members 201, 202, by thrust rings 218, 219, which in turn are forced outwards by actuating rings 211, 212, provided at their adjacent face with ramps, e.g. 212, and separated by balls, e.g. 213. The slight relative rotation of rings 211, 212 to operate the brake is effected by a fluid-pressure operated cam 224. In Fig. 7 (not shown) the brake shoes are forced outwards by a central annular hydraulically-operated piston-and-cylinder device. This embodiment is intended to be associated with the steering knuckle of a front wheel. Reference has been directed by the Comptroller to Specification 1,324,659.
Patent GB-1148394-A (GB)
Title: Broken filament indicator
Inventor: LEWIS DAVID JOHN LLOYD
IPC: B65H63/028
Filed: 1966-11-09
Abstract: 1,148,394. Measuring tension electrically. IMPERIAL CHEMICAL INDUSTRIES Ltd. Oct.18, 1967 [Nov.9, 1966], No.50212/66. Heading G1N. [Also in Division D1] Transient variations in the measured tension of a running yarn composed of one or more filaments are used to indicate the presence of one or more broken filaments, the yarn being subjected to a predetermined extension by adjustment of the speeds of the draw and feed rolls, and tension therein is measured by passing it over a deflection transducer comprising a snubbing pin mounted on a first of two parallel rigid members which, with two further parallel resilient members, constitute a parallelogram structure, the second rigid member being fixed to the fixed base. Piezo-resistive strain gauges are mounted between the rigid members. The output of the strain gauges is in the form of a pulse for each breakage detected and is fed to a threshold device set to give an output only when a pulse is above a predetermined amplitude and pulse width. Discrimination against machine vibrations is effected by measuring such vibrations with a similar strain gauge parallelogram structure not carrying a snubbing pin to contact the yarn, and subtracting its output from that of the first strain gauge transducer. Antivibration mountings are used. The output of the threshold device is used for indication, recording, or yarn stopping purposes.
Patent GB-1060130-A (GB)
Title: Improvements in or relating to treatment of nuclear fuel materials
Inventor: DELL RONALD MICHAEL
IPC: G21C3/62
Filed: 1964-12-10
Abstract: A sulphide or phosphide of uranium or thorium is densified by subjecting it in powder form to a pressing process at an elevated temperature. Pressing may be carried out at 2 to 3 tons per square inch, using a die and plungers made of graphite lined with tungsten, molybdenum or tantalum.  The temperature used for pressing uranium sulphide or phosphide is in the range 1300 DEG  to 1860 DEG  C.
Patent GB-1367958-A (GB)
Title: Cellular structure
IPC: E04B1/90
Filed: 1971-11-01
Abstract: 1367958 Aircraft and spacecraft structure COMMISSARIAT A L'ENERGIE ATOMIQUE 1 Nov 1971 [5 Nov 1970] 50724/71 Heading B7W [Also in Divisions E1 and F2] Lightweight beams or panels, e.g. for use in aircraft or space technology, are formed from a cellular structure, each cell of which comprises a stiff outer box, e.g. 10 surrounding but spaced from a stiff inner box, e.g. 11, with damping means therebetween, there being inwardly directed ribs, e.g. 12 on the outer box engaging in inwardly directed ribs, e.g. 13 on the inner box, the ribs being arranged in a herring-bone pattern. Both boxes may be straight, or the inner one curved and the outer one straight, as shown, or both may be curved, e.g. in a spherical form. Adjacent cells are welded or glued together, and prestressing wires 16 may run from cell to cell. A surface coating 18 of glass cloth may be provided. The damping means may be a poured or injected wires-elastic material such as epoxy resin or polyurethane or may comprise balls or granules of a ductile or plastics material, or comprise spring blades, or a combination of these. The boxes are moulded from aluminium alloy or fibre reinforced plastics, in two halves. The cell cavities may communicate via ports (19), Fig. 1 (not shown). High-inertia beams may be made from panels formed as above, interconnected by similarly-formed webs, arranged in cruciform fashion, or cross braces.
Patent GB-507671-A (GB)
Abstract: 507,671. Endless - belt conveyers. VICARS, Ltd., T. & T., and NAYLOR, J.F. Jan. 11, 1938, No. 813. [Class 78 (i)] In a biscuit-making machine the cutter web 1 is guided over a knife edge 2 and is then lapped back upon itself over guide rollers 9, 6, the former of which, together with the knife edge. can be moved away from the oven conveyer 7 when the manufacture is stopped temporarily to leave a space 8 into which scrap pieces of dough will fall.
Patent GB-1022730-A (GB)
Title: Improvements in or relating to magnetic wire recorders
IPC: G11B15/26
Filed: 1963-12-24
Abstract: 1,022,730. Magnetic wire recorders. K. KOBAYASHI. [Dec. 28, 1962 (4); Nov. 27, 1963], No. 50963/63. Heading G5R. A wire recorder, Fig. 1, evenly layer-winds the wire in both directions by reciprocating a grooved record/playback head 16 on rails 36a, 36b, the direction of winding being determined by reversing the motor 1 which drives the takeup reel 8 through a ratchet 31, Fig. 2A, for record/playback or drives the feed reel 12 through an oppositely-sensed ratchet 32, Fig. 2B, and a belt 22 for rewind. With matched layering on successive windings, the speeds of corresponding portions of the wire are the same on recording and playback. In a second embodiment, Fig. 4, the layering is achieved by rocking the heads 50 about a shaft 51 instead of moving them bodily as in Fig. 1 and the drive may be conveyed alternatively to the reels 8, 12, by rocking a transmission roller 58 by a hand-lever 62.,
Patent GB-1011175-A (GB)
Title: Refrigerated display unit
IPC: A47F3/04
Filed: 1963-12-30
Abstract: 1,011,175. Refrigerators. McCRAY REFRIGERATOR CO. Inc. Dec. 30, 1963 [Jan. 3, 1963], No. 51123/63. Heading F4H. In a refrigerated display unit having shelves 22-30 a cold air curtain is projected downwardly in front of the shelves and a warm air curtain is projected upwardly in front of the lower part of the cold curtain. Air is passed by a fan 60 over evaporators 44 and 48 to vertical passages 66-72 each communicating via a vaned opening with a space between adjacent shelves, and to a vertical passage 74 which projects the cold air curtain from a front opening 98. Air from the curtain and from the shelves is drawn by the fan through an opening 62 for recirculation. A heating element 104 gives rise to a convectional air curtain in front of the cold curtain, the air being drawn through a perforated plate 16. Heating elements 50, 52 and 54 are provided for defrosting purposes, defrost water passing through a drain pipe 56. The shelves and the ceiling board 100 are provided on their undersides with electric heating elements, Fig. 6 (not shown), which may be energized continuously or may be switched on only for defrosting. The elements are connected to a supply through flexible leads so that the height of the shelves may be adjustable. Heating elements are also provided at a lip 102 of the front opening 98 and behind price tag mouldings 42a. Roller curtains of sailcloth, glass fibre cloth, or wire screen cloth are located in an upper housing 14 and may be lowered between the cold and hot air curtains.
Patent GB-1413855-A (GB)
Title: Plastics housing for an optical lens systems inc typewriters
IPC: G02B7/02
Filed: 1973-11-05
Abstract: 1413855 Lens mounts ISCO OPTISCHE WERKE GmbH 5 Nov 1973 [10 Nov 1972] 51196/73 Heading G2J A plastics housing for a lens system comprises an outer objective body 1 integral with an inner lens holder 2, longitudinal recesses 3, 4, 5 being formed between the body and holder and at 6 between a focusing grip 14 and the objective lenses 8, 10, 12 fit into deformable flanged seats 7, 9, 11 and are glued or welded. The housing has threads 13 enabling it to be relatively positioned in an optical instrument, e.g. a projector.
Patent GB-1093177-A (GB)
Title: Improved silver complex diffusion transfer process
Inventor: HAES LOUIS MARIA DE
Filed: 1964-12-16
Abstract: 1,093,177. Photographic process. GEVAERT PHOTO-PRODUCTEN N. V. Dec. 16, 1964 [Dec. 16, 1963], No. 51235/64. Heading G2C. Silver halide complex diffusion transfer process comprises bringing a material comprising an imagewise exposed silver halide layer into contact with an image receiving layer comprising development nuclei and/or substances capable of forming such nuclei in situ, in the presence of a silver halide complexing agent, developing with an aqueous alkali solution and separating the layers, at least one of said materials, or said materials inter se, containing, as developers a 3 - pyrazolldone and either gallic acid, pyrogallol, gentisic acid, glucose or furoin. The developing solution may contain an alkali hydroxide, phosphate or carbonate, a further developer, KBr, calcium sequestering agents or black toning agents. Image receiving sheet preferably comprises supported layer of water-permeable colloid or latex, (e. g. carboxymethyl cellulose or its chromium salt) development nuclei pigments, colloidal silica, preserving agent (e. g. a bisulphite, metabisulphite or aldehyde bisulphite), Na 2 SO 3 , silver halide complexing agent (e. g. hypo), or black toning agents. In an embodiment the light-sensitive layer may be overcoated with a layer of waterpermeable colloid, or the light-sensitive and receiving layers may be in one multi-layer material.
Patent GB-1533656-A (GB)
Title: Mechanical gearing
IPC: F16H15/54
Filed: 1974-11-27
Abstract: 1533656 Friction gearing STRATHEARN AUDIO Ltd 26 Nov 1975 [27 Nov 1974] 51444/74 Heading F2Q A driving shaft 1 has a tapered concave end surface 3 which engages three balls 4 which are thus urged into contact with a flexible hemispherical shell member 5 attached to a driven shaft 7, the balls 4 causing the shell 5 to contact a rigid hemispherical shell 6 at three points. Rotation of the driving shaft 1 causes the flexible shell 5 to rotate relatively slowly and hence effects rotation of the driven shaft 7. In a modification shown in Fig. 2, cylindrical planetary rollers 22 are located between an input shaft 21 and a surrounding flexible tube 23, attached to an output member, and the tube 23 is surrounded by a less flexible tube 24. In a further modification, the members 23, 24 are conical, the rollers 22 are replaced by balls, and a conical end of an input shaft engages the balls. Relative axial movement between the balls 22 and either of the cores 23, 24 causes a change in gear ratio.