baber/WOPTO huggingface dataset:
Patent GB-485222-A (GB)
Abstract: 485,222. Electromagnetic switches. RYDER, N., EIDSFORTH, S. J., and METROPOLITAN-VICKERS ELECTRICAL CO., Ltd. Feb. 24,1937, No. 5592. [Class 38 (v)] [Also in Group XXXVI] In a moving-coil instrument or relay the core 6 is carried by a bracket 3 forming part of a die casting 1 secured relatively to the magnet so as to form a bridge across the polepieces. Projections 4 on the rear face of the bracket 1 register with holes or grooves ground in the permanent magnet. The iron core 6, which may be laminated, has an undercut groove 7 of keyhole form extending the whole length of the core, and is placed in the mould of the die casting so that the metal enters the groove. A small transverse notch or groove 8 prevents longitudinal displacement. Alternatively, the core may be provided with one or more projections around which the bracket is cast. The moving coil, which is situated in the air-gap 2 between the core 6 and the magnet poles, is pivoted at one end in the part 5 of the bracket 3 and at the other end in a cross-piece carried by pillars 10, 11. The dial plate is supported by a pillar 12, which registers with an aperture in the dial plate, and screws engaging pillars 13, 14. The casting 1 is secured in correct position to the permanent magnet and baseplate by screws passing through holes 15.
Patent GB-1066256-A (GB)
Title: Improvements in or relating to x-ray apparatus
Inventor: SHAYLOR JOHN HAROLD
IPC: H05G1/04
Filed: 1964-11-30
Abstract: 1,066,256. Container for X-ray tube. MACHLETT X-RAY TUBES (GREAT BRITAIN) Ltd. Nov. 24, 1965 [Nov. 30, 1964], No. 48554/64. Heading H5R. In the tube unit of an X-ray apparatus comprising an oil-filled tube the tube housing incorporates an expansion means in the form of a concave membrane of a resilient and extensible material, said membrane having its convex surface directed inwardly with respect to the housing and being so formed and of such dimensions that in the event of an excessive rise in pressure within the housing due to overheating of the tube, the membrane turns at least partly inside out and thereby produces an appreciable increase in the volume of the housing. Preferably the increase in volume afforded by the distortable membrane is such that any undue pressure rise is accommodated for a period at least sufficient for the cut-out to operate and disconnect the X-ray tube. The membrane may be enclosed within a cover attached to the housing, the space within the cover being sufficient to enable the membrane to turn inside out. The cover may alternatively be attached to the housing by means which are automatically released when the membrane operates, e.g. spring catches or frangible bolts or other devices. Means are preferably included for releasing the pressure within the housing after the membrane has operated and the above mentioned cover may be firmly attached to the housing and include a means for puncturing the membrane to release the pressure, the cover being provided with vents to release vapours but being shaped to prevent the escape of any significant quantity of oil. Alternatively the membrane may be formed with weakened portions which will rupture under fault conditions to release the internal pressure at a predetermined pressure, this membrane being as indicated above being provided with gas vents but restraining the escape of oil. The housing may carry a metal rod extending through the membrane which is covered with a cover firmly attached to the housing, the aperture in the membrane fitting round the rod to form an airtight sliding seal which permits movement of the membrane along the rod to accommodate expansion and whilst maintaining the seal under normal conditions permits, under fault condition, the membrane to uncover a pathway passing through the rod between the interior and exterior of the housing so as to provide the necessary pressure release, the gas, vapours and oil escaping into an appropriate container.
Patent GB-1205975-A (GB)
Title: Electric torches
IPC: F21L4/00
Filed: 1967-10-26
Abstract: 1,205,975. Electric torches. HOI YUEN MFG. CO. Ltd. 16 Sept., 1968 [26 Oct., 1967], No. 48696/67. Heading F4R. An electric torch has a switch comprising a knurled rotatable wheel 16, part of which projects from the torch casing to allow operation and part of which lies within the casing and has a projection 17 which when the wheel is rotated to operate the switch bends a brass strip 10 into contact with contact strip 7 to complete the electrical circuit from batteries 6, 14 to the bulb 5 and so switch on the torch. Rotation of the wheel in the opposite direction will then allow strips 7 and 10 to spring apart and the light will be extinguished. The body of the torch which is in the shape of a cigarette lighter is made of plastics, there being a transparent lens 21 in front of the bulb. A metal plate 23 at the base allows a current path between the batteries.
Patent GB-1463869-A (GB)
Title: Apparatus for the removal by suction of broken threads in  spinning and twisting machines
IPC: D01H5/68
Filed: 1974-11-11
Abstract: 1463869 Cleaning spinning &c machines SCHUBERT & SALZER MASCHINENFABRIK AG 11 Nov 1974 [21 Nov 1973] 48704/74 Heading D1F In the operation of apparatus for the removal by suction of broken threads in spinning and twisting machines comprising a suction duct 3, which terminates in a suction box containing a filter 40, and suction tubes 5 and 6 underlying delivery roller 1 with apertures 60 extending towards the spinning stations, entrained staple fibres are readily opened and removed by the flow of air and conveyed to the filter: continuous threads which are not so readily opened and removed are retained by an element 7 (preceding the filter, as considered in the direction of air flow) which is effective to sever the threads, at least when they are subjected to mechanical forces e.g. the pull exerted by roller 1 around which running thread may have become entangled, acting in the opposite direction to and exceeding the force due to the air flow, and perhaps continuously. The element 7 has severing means e.g. a knife, breaking or sawtooth edge or (perhaps relatively reciprocating) off-set saw-tooth edges as on plates 70, 71, Figs. 2-6 (not shown) and may be formed by a serrated edge of a circular opening where tube 5 opens into conduit 3, Figs. 7 and 8 (not shown).
Patent GB-1461014-A (GB)
Title: Adjusting mechanism for the main blade 'f a grader
IPC: E02F3/627
Filed: 1974-11-15
Abstract: 1461014 Graders O & K ORENSTEIN & KOPPEL AG 15 Nov 1974 [17 Nov 1973] 49662/74 Heading E1F A blade 7 of a grader is adjusted by a mechanism comprising a swivel arm 14 pivotally connected at 13a to the cylinder of a lifting ram 10, a swivel arm 16 pivotally connected at 15a and 19 to the cylinders of a lifting ram 11 and a side displacement ram 12 respectively, the swivel arms being pivotally mounted at 23, 22 to walls 20, 21 of bridge frame 2 and pivotally connected at 26, 25 to a locking member 24 having holes 27a to 31c, and a spring biassed locking bolt 32c for selective engagement with holes 27a to 31a. The pivot points 22, 23, 25 and 26 define a linkage quadrilateral which is asymmetrically disposed with respect to transverse horizontal and vertical axes of symmetry of the bridge frame.
Patent GB-1112617-A (GB)
Title: Recovery of sodium chloride in the production of bleached pulp
Inventor: HUMMEL RICHARD LINE
IPC: D21C11/06
Filed: 1965-11-23
Abstract: In a process for pulping of cellulosic materials wherein the cellulosic material is digested in known manner with an aqueous solution containing sodium hydroxide and/or sodium sulphide, and the spent digestion liquor is sent to a recovery system wherein it is evaporated and heated in a furnace to produce a smelt, which is dissolved in water, clarified and causticized in known manner, and a fume containing sodium chloride and sodium sulphate, the fume is leached with water to produce a solution rich in sodium chloride. Instead of water, a saturated solution of sodium sulphate can be used to increase the separation of chloride from sulphate in the fume. The sodium chloride solution thus obtained may be used for the generation of a mixture of chlorine and chlorine dioxide by the reaction of sodium chloride, sodium chlorate and sulphuric acid, which mixture is then used to bleach the digested cellulosic material.  The solids remaining from the leaching process, consisting mostly of sodium sulphate, may be recycled to the furnace, or employed to provide sulphuric acid and/or sodium hydroxide.
Patent GB-1523989-A (GB)
Title: Working fluid for and the operation of vapour turbines or turbine sections of multiple turbine sets
IPC: F01K25/06
Filed: 1976-11-29
Abstract: 1523989 Vapour turbines MASCHINENFABRIK AUGSBURG-NURNBERG AG 29 Nov 1976 [28 Nov 1975 25 Aug 1976] 49709/76 Heading FIT  A turbine plant uses as the working fluid the azeotropic mixture of water and methoxypropanol, the latter consisting of 80 to 95% 1-methoxy-2-propanol and 20 to 5% 2-methoxy-1- propanol. The azeotropic mixture comprises 53 wt. per cent methoxy propanol and 47% water.
Patent GB-1286177-A (GB)
Title: Fastener
IPC: F16P3/08
Filed: 1970-10-21
Abstract: 1286177 Electrically operated fastening ELLENBERGER & POENSGEN GmbH 21 Oct 1970 [27 Oct 1969] 50054/70 Heading E2A An electrically operated fastening has a sliding bolt 2, a pivoted lever 7 and has a bimetallic strip 13 which is attached to the lever 7 adjacent a pivoted end thereof and which is also attached to a housing 1. The bending of the strip 13 causes rotary movement of the lever 7 and thus sliding movement of the bolt 2. The bolt is provided with a projection 3 and a flat portion 5 having pins 6 projecting from each side thereof. The lever comprises two insulating plates 8 which are spaced apart by means of a 'U'-shaped member 9 attached thereto, is pivoted to the housing 1 by means of pins 12, and is connected to the bolt 2 by means of an end thereof being located between the pins 6. The bimetallic strip 13 is connected to the member 9 of the lever and has a stud 24 thereof retained against a projection 43 of the housing 1 by means of a member 44. Heating coils 14, 15 are wound on insulating sleeves 22, 23 respectively and the latter are mounted on the strip 13. One end 18 of the coil 14 is connected to a lug 20 and one end 19 of the coil 15 is connected to a lug 21. Ends 16, 17 respectively of the coils 14, 15 are connected to the strip 13. A contact spring 25 is fastened by the rivet 24 to the strip 13 and carries a contact 26 which is engageable with a contact 27 carried by an extension 28 of the lug 21. The fastening is also provided with a lug 31 which is connected to one end of a spring 33 and with a lug 32 having a contact 35 which is engageable with a contact 34 carried by the spring 33. The other end 36 of the latter engages a projection 37 on one of the insulating plates 8. A spring 38 has one end thereof secured, by means of a plate 10, to the lever 7 and has the other end thereof fastened to a lever 39, the latter being carried by the housing 1 and adjusted by means of a screw 41. Electricity supplied to the lugs 20, 21, when a door of a washing machine is closed for example, passes through the coil 14, via the contacts 26, 27 which are closed as shown in Fig. 1. The strip 13 is heated and bends to the position shown in Fig. 2 where the lever 7 has been pivoted to move the bolt 2, against the urging of the spring 38, to its fastening position. The contacts 26, 27 are disconnected due to the pivoting of the lever 7, this allowing electricity to pass through both the coil 14 and the coil 15 but at a reduced rate. Thus the strip is retained in its bent state without being overheated. At the same time the contacts 34, 35 are engaged to connect electricity to a motor, for example, via the lugs 31, 32. When the electricity supply is disconnected from the lugs 20, 21, the strip 13 unbends and the bolt returns to its unfastened position.
Patent GB-1280519-A (GB)
Title: Improvements in or relating to memory elements
IPC: G11C17/00
Filed: 1969-10-13
Abstract: 1280519 Semi-conductor devices SPERRY RAND CORP 13 Oct 1969 [14 Oct 1968] 50151/69 Heading H1K A memory element designed for non-destructive read-out comprises a conductive electrode 15 capacitively coupled to a semi-conductor substrate 18 through at least two contiguous dieleoric layers 16, 17 whose electrical conductivities differ by a factor of more than two. The current density versus electric field characteristic of each dielectric layer is highly non-linear so that electric charges accumulate at the interface 20 relatively rapidly in the presence of a high "read-in" field and disproportionately slowly in the presence of a relatively low "read-out" field. The dielectric layers 16, 17 may comprise the gate insulation of an IGFET, in which case the device parameter varied in accordance with the stored information is the threshold voltage which must be applied to the gate electrode to initiate conduction between the source and drain regions. Alternatively the memory element may comprise an MIS capacitor, the relevant device parameter being the "flat-band voltage" at which variation of capacitance with voltage commences. In both cases the parameter concerned is dependent upon charges present at the interface 20, and so may be shifted by the application of a relatively high voltage across the dielectric layers or non-destructively measured by the application of a relatively low interrogation voltage across the dielectric layers. The dielectric layers may respectively comprise silicon nitride and silicon oxynitride, and in a modification a third layer of silicon dioxide may be used.
Patent GB-1382089-A (GB)
Title: Plasma generator nozzles
IPC: H05B7/00
Filed: 1972-11-03
Abstract: 1382089 Spray producers METCO INC 3 Nov 1972 [12 Nov 1971] 50730/72 Heading B2F [Also in Division H5]  A nozzle for a plasma generator comprises a passage having an inlet portion 12 an intermediate portion 14 inclined to the inlet portion 12 and an outlet portion 15 inclined in the same sense to the intermediate portion 14, and at a greater angle to the inlet portion 12. As described, the angle A between the inlet portion 12 and intermediate portion 14 is between 4 and 28 and the angle B between the inlet portion 12 and outlet portion 15 is between 45 and 90. For optimum plasma generation sin (B-A)#90% sin B. The nozzle construction enables work to be performed around corners and in small apertures. The nozzle may be made of copper, copper alloy, brass, aluminium or steel or of insulating material such as polyethylene or nylon having at least one inch of the bore made of or lined with electrically conductive material. Blind bores 20, 21 are provided for cooling and ribs 16 for securing to a generator so that rod electrode 18 has on the axis of the inlet portion 12. Welding, cutting and flame spraying of metal and ceramics are specified applications. A powder feed passage 30 is fed with powder in a carrier gas. The nozzle may be used with an extension tube.
Patent GB-1528964-A (GB)
Title: Apparatus and process for atomizing molten material
IPC: B22F/
Filed: 1975-12-12
Abstract: 1528964 Spray producers UDDEHOLMS AB 12 Dec 1975 [18 Dec 1974] 51094/75 Heading B2F [Also in Division C7] Molten metal, e.g. steel, falls through an opening 5 in a tundish 4 and is atomised by a first jet of fluid e.g. nitrogen or argon from a nozzle 6 having an elongated outlet and a second jet from a nozzle 7 which has an outlet which is elongated and is curved in section e.g. semicircular.
Patent GB-1291746-A (GB)
Title: Gas barrier for muffle furnaces
IPC: F27D99/00
Filed: 1970-10-28
Abstract: 1291746 Separating furnace zones BTU ENG CORP 28 Oct 1970 [3 Nov 1969] 51180/70 Heading F4B An adjustable gas barrier for separating the atmospheres of two adjacent sections of a muffle furnace comprises two circular plates 18, 20 each sealed to an adjacent section 12, 14 of the furnace and connected by a cylindrical member 22, and inner plates 24, 26 connected to the member 22. The spaces between the inner plates 24, 26 and the outer plates 18, 20 are open to the furnace, and a U-shaped tubular member 44 has holes 46 to deliver a sealing gas curtain into the furnace space. An inverted triangular sectioned baffle 56 slides between the inner plates 24, 26 and a sealing gas supplied through a pipe 58, issues between out turned flanges 70 at the bottom of the baffle 56 to complete the gas curtain. The gases from the adjacent sections 12, 14 of the furnace are exhausted from the annular spaces on either side of the barrier through tubes 40, 42 and may be burnt with additional air. The barrier gas may be nitrogen, or other inert gas, and the cylindrical member 22 may be water cooled.
Patent GB-1237334-A (GB)
Title: Dealkylation process
IPC: C07C17/14
Filed: 1969-10-21
Abstract: 1,237,334. Benzyl chloride. LUMMUS CO. 21 Oct., 1969 [23 Oct., 1968], No. 51571/69. Heading C2C. [Also in Division C5] Halogenated aromatic compounds are produced as by-products in the demethylation of methyl-substituted aromatic hydrocarbons using oxygenated melts containing a multi-valent metal halide in both its higher and lower valence state. In an example the reaction of toluene and an oxygenated melt containing KCl, CuCl and CuCl 2  gives a product comprising mainly benzyl chloride.
Patent GB-1495168-A (GB)
Title: Stabilized nitrile polymers
IPC: C08L33/00
Filed: 1975-12-18
Abstract: 1495168 Stabilizing nitrile polymers STANDARD OIL CO 18 Dec 1975 [6 Jan 1975] 51812/75 Headings C3P and C3G A polymer of a major portion of an ethylenically unsaturated nitrile and a minor portion of another vinyl monomer is stabilized by the incorporat on therein of a compound wherein X is oxygen, -NH- or -NR- where R is a C 1-8  alkyl, phenyl or alkyl phenyl group, Y is -O- or -CH 2 - and each Z may be H or C 1-12  alkyl. The polymer may be a graft polymer.
Patent GB-518131-A (GB)
Abstract: 518,131. Moulding by dipping. BRATRING, K., and INTERNATIONAL CONTAINERS, Ltd. Aug. 16, 1938, No. 34104. [Class 87 (ii)] A bath that is raised and lowered for dipping moulds in liquid has a cover in two parts which are moved apart laterally, the weight of the means for raising the bath being adapted to act on the cover parts and press them together and on to the edges of the bath opening. The bath 1 is adapted to run into and out of the casing 10 on rails 5 and is raised and lowered by a hydraulic plunger 7. The two-part cover 13 is moved laterally by two pairs of bell crank levers 12 pivoted on shafts 11 and the cover 13 carries studs 16 which are guided in channels 17. The plunger 7 carries studs 9 on plates 8, which studs coact with the bifurcated ends 18 of the levers 12 to close the cover 13 when the plunger 7 is in its lowest position. Rubber gaskets 19, 20 are provided on the cover and bath to form a gas-tight joint. -
Patent GB-1180774-A (GB)
Title: Counter apparatus for recording the results of testing batches of articles.
Inventor: PIGGOTT JOHN BRIAN
IPC: G07C3/14
Filed: 1967-11-16
Abstract: 1,180,774. Quality control. VAUXHALL MOTORS Ltd. 19 Sept., 1968 [16 Nov., 1967]. No. 52231/67. Heading G4D. The quality of a batch of articles is estimated by depressing an accept or reject lever as each article is tested. A disc 21 is rotated by a clockwork motor and release of an escapement mechanism at each operation. The reject lever 28 also operates a double pawl-and-rack mechanism to step an indicator 4 along a bar 5. The disc 21 carries an insulating disc 1 with conductive tracks 2, 3 for co-operation with a contact on the indicator 4 so that an accept or reject signal is given when the quality of the batch is sufficiently estimated. The disc 1 is interchangeable according to the standard required, and the apparatus is portable, Fig. 2. Reverse movement of the accept lever frees the escapement so that the disc is driven to starting position. At the same time the reject count indicator 4 is returned by a spring.
Patent GB-1248618-A (GB)
Title: Packaging device for sheet materials
Inventor: CASTIAUX MARCEL
IPC: B65D85/48
Filed: 1968-11-06
Abstract: 1,248,618. Packing sheet material. GLAVERBEL. 6 Nov., 1968, No. 52574/68. Heading B8C. A package comprises a pack of sheets surrounded by at least one frame and extending therethrough, the sheets bearing edgewise on a bearer connected to the frame, and one or more stops on the bearer extending across one end or across opposite ends of the pack to prevent or limit displacement of the sheets through the frame in one or each direction. A stack of sheets, e.g. of glass, is held within two wooden frames 18 which surround the stack and-support a floor panel or bearer 6 provided with stop members 13, 14 which limit movement of the sheets which are placed on edge on the bearer. Each frame comprises two interconnected L- shaped sections, each section consisting of a relatively long member with one end received between two shorter members. The two sections of each frame are interconnected by steel bands 21 extending around the top and bottom of the frame and secured by nailing. The inside faces of the longer members and the floor panel are covered by a plastics material. A top panel 23 is attached to the frames; additional panels may be connected to the frames and floor panel to completely enclose the sheets. In an alternative construction only one frame is used, provided with a bearer panel and end stops. In further embodiments two or more stacks of sheets are supported on a bearer panel and adjacent stacks are separated by a spacer sheet; a panel may separate upper and lower stacks and be provided with end stops extending above and below the panel.
Patent GB-1090600-A (GB)
Title: Improvements in or relating to hydraulic dampers
IPC: F16F9/42
Filed: 1964-12-31
Abstract: 1,090,600. Hydropneumatic shock absorbers. M KATZ-. Dec. 31, 1964 [March 11, 1964], No. 52996/64-. Heading F2S. In a hydro pneumatic telescopic damper of the direct-acting or lever type comprising a piston 11 movable in a liquid filled tube 10 communicating; by means of a foot valve- 28, with an annular-compensating chamber 33 the piston 11 consists of three similar-elements 11<SP>1</SP>, 11<SP>11</SP>, 11<SP>111</SP>, two of which 11<SP>1</SP>, 11<SP>11</SP> are orientated in the same direction and one 11<SP>111</SP>in the opposite direction, all of the elements having through bores and a  concave face upon which bear valves 25<SP>1</SP>; 25<SP>11</SP>, 25<SP>1</SP>1<SP>1</SP> made up of one or more resilient-washers. The opposite faces of the valves 25<SP>1</SP>, 25<SP>11</SP>, 25<SP>111</SP> bear against insert, members. 26<SP>1</SP>, 26<SP>11</SP>, 26<SP>111</SP> with apertures-27<SP>1</SP>, 27<SP>11</SP>, 27<SP>111</SP> on their cylindrical parts which, serve as guides and form, liquid passages of variable cross-section. The profiles of the apertures 27<SP>1</SP>, 27<SP>11</SP>, 27<SP>111</SP> may be-shaped to give the desired damping characteristics. A piston-rod 12, carrying a protective tube 38, passes through a plug 17, which closes the upper ends of the tube 10 and an outer tube 15, and through a fluid-tight packing 19, the compensat. ing chamber 33 accommodating a piece of corru gated heat-conducting sheet metal 36. The foot valve comprises a resilient washer 28, an insert member 29 with apertures 30, and a weak spring 32 all being fitted to a base closure member 18 by a screw 31. In. a modification, Fig. 7, (not shown), the piston comprises-only one element having concave end faces-each associated with a resilient washer, and the foot valve includes a laterally movableinertia type valvewhich, when the damperis fitted to a vehicle, hardens the suspension during e.g. braking and cornering. In a further, modification a damper, adapted to be located, horizontally in a vehicle suspension system, Fig. 8, (not shown), has an inertia mass (42) in the foot valve the mass being movable axially of the damper to obturate a port (46).