baber/WOPTO huggingface dataset:
Patent GB-731321-A (GB)
Title: Method of manufacturing hollow metal bodies by extrusion
IPC: B21C23/32
Filed: 1953-04-15
Abstract: 731,321. Extruding. COMPTOIR INDUSTRIEL D'ETIRAGE ET PROFILAGE DE METAUX. April 15, 1953 [April 18, 1952], No. 10327/53. Class 83 (4). In the manufacture of hollow metal bodies by backward extrusion of a heated billet there is inserted between the closed end of the container 1 and the billet and/or between the front face of the ram 5 and the billet, a material of a vitreous nature capable of assuming a viscous condition at the extrusion temperature. A layer 3. 7 of vitreous material is placed in front of the billet and on the dummy block 6. The billet after being heated in a salt bath is wrapped in vitreous material, such as a glass sheath, before insertion into the container. The container bore 2 is flared at 4 or the entire bore may be frusto-conical for receiving frusto-conical shaped billets. The billet may be of rectangular cross-section. The vitreous material may be ordinary window glass or certain slags, and may be in solid, powdered or fibrous form. The viscosity and composition of a preferred glass, and examples of the extrusion pressures and temperatures are given. Specifications 663,357 and 684,013 are referred to.
Patent GB-686069-A (GB)
Title: New phenthiazine derivatives and process for their preparation
Filed: 1951-05-02
Abstract: The Specification comprises phenthiazine compounds of the formula <FORM:0686069/IV (b)/1> in which R represents an alkyl group having 1 to 4 carbon atoms. Such compounds are obtained by reacting a secondary amine R2NH with N - (2 : 3 - epoxypropyl) - phenthiazine. Examples describe the preparation in this way (in alcohol solution and at increased temperatures and pressures) of compounds of the above general formula in which R represent ethyl- and methyl radicals respectively.  N-(2 : 3-Epoxypropyl)-phenthiazine is obtained by reaction of epichlorhydrin with a mixture of phenthiazine lithium phenyl in ether.
Patent GB-1298694-A (GB)
Title: Improvements in or relating to extruders
IPC: B29C48/515
Filed: 1970-03-04
Abstract: 1298694 Extruder screw shaft seal GLOUCESTER ENG CO inc 4 March 1970 [13 March 1969] 10364/70 Heading B5A [Also in Division F2] In a vertical or horizontal barrel screw extruder for plastics, wherein the screw shank 122, extends beyond a barrel crosshead outlet 40 into driving engagement with a gear box 119, leakage of plastics material between the barrel and shank is minimized by a heat insulating air containing chamber 117, by water-cooling of the shank 122 outwardly therefrom, by a hollow member 116 within the interior of the shank 122, and by a water cooled seal 152 surrounding the shank portion 122 and attached to the barrel end. The lower end of chamber 117 is defined by the hollow member 116 on to which the shank portion 122 is shrunk fit, with the drive being transmitted between the gear box 119 and the shank 122 by a hollow cylindrical shaft 118. The cooling water circulates within member 166 from a pump, via concentric exterior outlet and interior inlet pipes 126, 127 connecting at a rotary seal 130. The interior of the seal 152 comprises a thread of opposite hand to that of the extrusion screw and which provides a clearance around the shank portion 122, decreasing outwardly from the barrel from À005 to À001 to accommodate eccentricity of the screw.
Patent GB-769266-A (GB)
Title: Steelworks converter
IPC: C21C5/48
Filed: 1955-04-07
Abstract: 769,266. Metallurgical converters. DEMAG AKT.-GES. April 7, 1955 [April 29, 1954], No. 10375/55. Class 72 A mechanically operated device for removing the tuyere plate from a metallurgical converter comprises a first-part engaging the tuyere plate and a second part bearing against the converter body, the first part being adapted to withdraw the plate or turn it relatively to the converter body by means of a pressure applying device e.g. a screw, wedges, or a hydraulic device. As shown, a bar 9 may have hydraulic jacks 12 fitted at its ends, the free ends of the jacks being secured to the converter body 1. A bolt 10 connects the bar to a three-armed star-shaped member 7 through a ball and socket joint 11, the ends of the arms having slots through which pass bolts 8 engaging in recesses near the circumference of the tuyere plate 5. Operation of the jacks enables the plate to be removed easily and without damage.
Patent GB-541894-A (GB)
Title: Improvements in or relating to limb protectors, for example, for sports wear
IPC: A63B71/12
Filed: 1940-06-14
Abstract: 541,894. Limb protectors for sporting and other purposes. SOC. ITALIANA PIRELLI. June 14, 1940, No. 10396. Convention date, Aug. 12, 1939. [Class 132 (ii)] A limb protector, for example for sports wear, comprises a stiff trough-shaped outer member 1 to extend along the limb, a coextensive trough-shaped inner member 2 of flexible substantially inextensible material spaced from the outer member and connected to it along the longitudinal edges, and means such as straps 5, laces or a sliding clasp fastener for attaching the protector to the limb. The inner member 2 and the fastening straps may be lined with a resilient cushioning material. The protector may be secured to the stocking of the wearer.
Patent GB-259629-A (GB)
Title: Improvements in or relating to lehrs, annealing furnaces or like apparatus
IPC: C03B25/06
Filed: 1925-04-21
Abstract: 259,629. United Glass Bottle Manufacturers, Ltd., and Pryor, E. A. C. April 21, 1925. Annealing-furnaces. - A leer in which annealing is effected largely by heat of the goods as fed into the leer comprises an annealing chamber proper a and a second chamber b containing means for heating the return run of the conveyer prior to entry into the annealing chamber. The chamber b is heated by roof flues k fired by gas or oil burners and closed below by conductive plates m. Removable trays q close the chamber b below. Electric or other heating means are provided in the annealing chamber for attaining and, if necessary, maintaining, the required temperature Draught screens j and r are provided and also automatically opening doors h.
Patent GB-610394-A (GB)
Title: Improvements in or relating to pipes, pipe joints and methods of forming the same
IPC: F16L21/035
Filed: 1946-04-04
Abstract: 610,394. Pipe joints. LOCK JOINT PIPE CO. April 4, 1946, No. 10410. Convention date, Dec. 29, 1941. [Class 99 (i)] A joint for pipes made of plastic materials which subsequently harden and particularly for concrete pipes in which a spigot 11 of one pipe telescopes into a socket 10 of another pipe so as to compress a sealing gasket 15, is characterised in that the spigot consists of plastic such as cementitious material, that both bearing surfaces 12, 13 are cylindrical, and that a circumferential groove 14 is provided in the surface 13 of the spigot, the groove having a uniform cross-section and enclosing the gasket which is made of rubber or like deformable material. In Fig. 2, the socket 10 is an integral part of the pipe and is wholly cementitious. Fig. 3 shows the socket formed by affixing a separately formed collar 21 to the pipe 22; it also shows the socket bearing surface constituted by a metal ring 23 and the space 24 at the end of the socket filled with mortar.
Patent GB-548782-A (GB)
Title: Improvements in adjustable cylindrical guides and bearings
IPC: B23Q1/26
Filed: 1941-08-16
Abstract: 548,782. Bearings. MUNTZ & CO., Ltd., A., and SCHREIBER, E. O. Aug. 16, 1941. No. 10440. [Class 12 (i)] In a cylindrical bearing for axial or rotary movement the bearing fit is adjusted by a wedge arrangement extending substantially for the full length of the support 10 and exerting a thrust tangential to the cylindrical member. A parallel key 21, Fig. 2, is secured to one member and a taper key 23 is secured at right angles to key 21, key 23 being engaged by a wedge 25. The wedge is retained in adjusted position by screws 26 threaded into the key 23, the screws engaging the wedge directly or through plates adjusted by set screws. The keys 21, 23 may be secured to the moving column 11 or to the fixed support 10. Key 23 may be replaced by two tapered elements with the wedge 25 between them, one of the elements being secured either to the support 10 or the column 11. Alternatively, the support 10c, Fig. 8, is split and carries a flange 34 on one edge, the wedge 25c acting between the flange and the other edge of the support.
Patent GB-574896-A (GB)
Title: Improvements relating to apparatus for the filtration of liquids
IPC: B04B5/12
Filed: 1944-05-31
Abstract: 574,896. Centrifugal separators. BROWNLOW, R. S. May 31, 1944, Nos. 10474/44 and 4625/45. [Class 23] Liquid, containing solid matter, is forced into a container 1, through a pipe 16, the liquid passing inwards through filters 12 to hollow screws 13 leading to a hollow extension 11 of a rotary shaft 4 driven by a pulley 7. Solid matter is flung from the surfaces of the filters, under centrifugal action, and falls to the bottom of the container, from which it can be removed. Radial rods 18 agitate the liquid in the container. The filters may be porous pots, built up of piles of discs, or consist of closelycoiled wire. In a modification, the filters are arranged with their axes parallel with the axis of the shaft. The first Provisional Specification states that the discs may be of stainless steel, and the container 1 revolve around a stationary pile of filters.
Patent GB-298448-A (GB)
Title: Improvements in steels for sharpening knives
IPC: B24D15/08
Filed: 1928-04-10
Abstract: 298,448. Atkins, H. r., and British Cutlery Research Association. April 10, 1928. Drawings to Specification. Steels for sharpening knives have twelve or more flutes which are ground after the steel is hardened.
Patent GB-667758-A (GB)
Title: Improvements in ladies skirts
IPC: A41F9/02
Filed: 1950-04-28
Abstract: 667,758. Skirts. SIMPSON, Ltd., S. April 28, 1950, No. 10540/50. Class 141. A skirt is provided with a length of elas tic webbing 4 extend ing through a tunne or loops at the rear of the waistband 1 and having buttonholed tabs 5 at each side adapted to en gage buttons 3 on tabs 2 extending from the front of the waistband. Spaced friction pads 16 of rubber &c. are provided on the inside. Specification 499,170 is referred to.
Patent GB-924224-A (GB)
Title: Improvements in and relating to time-base circuits
Inventor: REID TERENCE PATRICK
IPC: H03K4/502
Filed: 1960-03-24
Abstract: 924,224. Transistor sawtooth generators. KELVIN & HUGHES Ltd. March 22, 1961 [March 24, 1960], No. 10544/60. Class 40 (6). A sawtooth generating circuit comprises a transistor connected as shown in Fig. 1. Capacitor 12 is arranged to charge linearly under control of the " bootstrap " feedback via a highvalue capacitor 13. Diode 14 is normally conductive but is cut-off by the fall in voltage from capacitor 13 when switch 15 is opened to initiate each sweep. Switch 15 may be a transistor controlled by a bi-stable or monostable state circuit. When a negative trigger pulse is fed to the bi-stable circuit shown in Fig. 2, transistor 17 is rendered conductive so that transistor 18 is cut off. The rise in collector voltage of transistor 17 cuts off transistor 15 and allows capacitor 12 to charge linearly under control of transitor 10. When the output voltage at terminal TX has fallen sufficiently, the state of the bi-stable transistors 17, 18 is reversed, so that transistor 15 is rendered conductive, discharging capacitor 12 and terminating the sweep. In Fig. 3 (not shown) resistor 26 is replaced by a capacitor so that the circuit becomes self-oscillating.
Patent GB-1491643-A (GB)
Title: Tool holder construction
IPC: B24D15/00
Filed: 1976-03-16
Abstract: 1491643 Hand tools E R OLSON 16 March 1976 10546/76 Heading B4K [Also in Division B3] A tool holder construction adapted to support a workpiece eroding tool, such as an abrasive stone 18, Figs. 1 and 2, against a workpieee 29 for reciprocation by a power source 10, comprises an elongated resiliently flexible member 14 having an aperture 22 at an end portion for receiving the tool, the aperture being larger 23 along the axis of the member than the crosssectional thickness t of the tool whereby engagement of a free end of the tool with a workpiece 29 carries the tool to pivot into engagement with the longitudinal spaced edges of the aperture. The member which may be of nylon, steel, aluminium, brass, copper or hard wood, has a clamp 16 at one end for securing to the output member of a hand held reciprocatory power source 10, and the other end of the member has a strip or blade 20 formed with the rectangular aperture 22 which has a length 23 greater than the thickness t of the abrasive stone 18. The effective length of the aperture may be adjusted by movement of the strip 20 relative to the end 24 of the member, the strip and member being secured in adjusted position by a screw 26 which also holds a clip 28 of spring steel for retaining the stone in the aperture when it is lifted from the surface 30 of a workpiece 29 such as a die or mould. In another embodiment, the tool holder comprises a pair of superimposed spring steel elongate members 14a, 14b each of which has an aperture that has a length in the longitudinal direction of the members greater than the thickness of the abrasive stone 18n, the members being positioned relative to one another to hold the stone in an inclined position.
Patent GB-436231-A (GB)
Title: Improvements in electrically operated pumps
IPC: F02M37/08
Filed: 1934-04-07
Abstract: 436,231. Fuel pumps. JONES, F. J. S., Moreton, New Road, Porthcawl, Glamorgan. April 7, 1934, No. 10572. [Class 102 (i)] In an electrically-operated diaphragm pump the diaphragm 9 is secured to a tapered magnetic core 3, which moves in an arcuate path, the diaphragm pivoting about an abutment 6. The core 3 carries a non- magnetic bracket 14, which passes through a slot in a magnetic plate 12 at the end of an electric coil 2. When the coil is energized the core is moved against the action of a spring 13, and operates a snap-over switch 19 to break the circuit at a contact 19<a>. The base 30 contains the suction valve 36, the discharge valve 35 and a filter 33. In order to prevent sparking, a resistance wire is connected across the ends of the coil 2. The wire is doubled to prevent induction and is wound on the coil. Specification 410,537 is referred to.
Patent GB-513435-A (GB)
Title: An improved folding canopy or cover for motor cars
IPC: B60J11/00
Filed: 1938-04-07
Abstract: 513,435. Covers for motor cars. FREUND, W. (Gugel, W.). April 7, 1938, No. 10603. [Class 20 (i)] A waterproof cover for a motor car is shaped to the form of the car and is provided with one or more closable openings adjacent the doors of the car, to provide access to the interior of the car without removing the cover. The cover 1 is provided with openings 4 adapted to be closed by sliding-clasp fasteners and also with celluloid covered spaces 2, 3 forming windows for the lamps and number plate. The cover is locked to the car by a rod 5 extending through the eyes 6 of the fastening on opposite sides of the car, and a padlock 9. The cover is spaced from the roof by rubber balls 12 held in pockets in the cover, and the space between the car and cover is ventilated by means of flaps 11 and a spring valve 13. A reinforced cover strip 4a may be provided at the fastenings for the openings. A tent extension as shown in dotted lines in Fig. 1 may be attached to the cover for camping purposes.
Patent GB-994591-A (GB)
Title: Sealing and pivotable mounting arrangement for rocket engine discharge nozzles
Inventor: ERNST ADOLPHE OTTON GONTIER
IPC: F02K9/84
Filed: 1963-03-19
Abstract: 994,591. Deflecting rocket engine jets. SOC. NATIONALE D'ETUDE ET DE CONSTRUCTION DE MOTEURS D'AVIATION. March 19, 1963 [March 20, 1962], No. 10827/63. Heading B7G. A rocket engine discharge nozzle has an upstream portion rotatable about its axis with respect to the engine, and a downstream portion forming an elbow with the upstream portion, sealing and pivotal mounting means being disposed about the upstream portion and comprising an annular piston 9 and a labyrinth packing 8 downstream thereof, an annular chamber 7 being defined by the piston 9, packing 8, nozzle, and a fixed part 13 of the engine, and being filled with lubricant paste, such as grease charged with graphite flakes. In Fig. 2, the nozzle 11 has a throat 12 at the elbow and the mounting further comprises oblique contact ball bearings 17, 19, with spring means 18 taking up play. A variety of bearing arrangements are described, in which flow of the paste past the labyrinth is radial or axial of the nozzle, and in one, Fig. 12, there are no ball bearings, and labyrinth packings 8m, 8p, are secured to the nozzle wall 11 and fixed part 13 respectively, and paste is contained in chambers 7a and 7b. The paste is pressurized by piston 9a subject to spring 35. The piston may have an upstream facing of heat insulating material.
Patent GB-683674-A (GB)
Title: Improvements in the production of dihydrofurane
IPC: C07D307/28
Filed: 1951-05-09
Abstract: Dihydrofurane is produced by reacting 1,4-dichlorbutene-2 with acid-neutralizing substances in aqueous medium at elevated temperature.  The dichlorbutene, obtainable from 1,4-dihydroxybutene-2 and HCl below 70 DEG  C. or from butadiene and Cl2, may be mixed with an aqueous solution or suspension of the neutralizing substance, particularly the oxides or hydroxides of the alkali or alkaline-earth metals, including Mg, at about 100 DEG  C., or, for example, at 60-150 DEG  C. with reduced or increased pressure to distil off the dihydrofurane.  The reactants may flow continuously down a filled column so that the solution from the base is still alkaline.  Alkali carbonates are less suitable as neutralizing substances.  In examples, sodium or potassium hydroxide or calcium oxide is used.
Patent GB-873898-A (GB)
Title: Constant frequency generator
IPC: H02K17/44
Filed: 1960-03-29
Abstract: 873,898. Induction generators; transformers. JACK & HEINTZ Inc. March 29, 1960 [April 6, 1959], No. 11027/60. Classes 35 and 38 (2). In an induction generator like that described in Specification 868,400 in which an induction generator is caused to produce a constant frequency at variable speed by supplying its rotor with slip frequency current, the static frequency changer and its controlling pulse-generator (identical with that shown in Fig. 7 of the previous case) are mounted within a hollow rotor shaft to avoid the use of slip-rings. The rotor winding 12 of the main generator 11 is fed through frequency changer 17 with current from the rotor winding 21 of a synchronous exciter generator 18 whose stator winding 20 may be energized at starting from a permanent magnet generator 22 through a rectifier and regulator 23. The pulse-generator 25 which controls the frequency changer is connected to the exciter winding 21 and also to a source 29 of reference frequency which is transmitted to the pulse generator through a rotating transformer 26. This transformer has fixed and rotating coil-sets 27, 28 which are arranged concentrically so that the frequency is not influenced by the rotation. If the regulator 23 requires it, an additional induction machine 33 may be provided which generates a signal current proportional to the exciter voltage. The rotor windings 34 of this machine are connected in reverse phase rotation to the exciter winding 21, and the stator winding 35 is connected across a choke in the regulator 23 to provide the desired current. The hollow rotor comprises concentric tubes 83, 95 between which are located the components 1-6 and 40, 42 of the frequency changer. Cooling oil is circulated through this space and also through stator passages 78. A synchronous condenser 15 may be connected to the machine output winding 14.
Patent GB-832660-A (GB)
Title: Hydraulic coupling
IPC: F16D33/14
Filed: 1958-04-08
Abstract: 832,660. Hydraulic couplings. NELSON, G. E. April 8, 1958, No. 11074/58. Class 69 (2). A coupling has a stationary reservoir 48 and a casing 34 that rotates with the impeller 10; any liquid that escapes into the space between the casing 34 and stationary casings 18 and 44 is exhausted into reservoir 48 via a port 77 by centrifugal action. Adjustable scoop tube 40 determines the amount of liquid in chamber 36 and hence in the working chamber which chambers are connected by passages 38. Liquid may be pumped from the reservoir via port 70 and a cooler back into the working chamber via passages 55, 56, 58, 60, 64, 65.
Patent GB-276702-A (GB)
Title: Improvements in electromagnetic brakes for rail-borne vehicles
IPC: B61K7/10
Filed: 1926-04-27
Abstract: 276,702. Bõseler, W. April 27, 1926. Rails.-In an electromagnetic brake system of the kind comprising brake shoes 1 constituting the pole pieces of magnets arranged on the track for engagement with the vehicle wheels, provision for the passage over the track of locomotives which have a greater ground clearance than trucks is effected by raising the rails as shown in Fig. 9 or by means of a face plate 24 hinged beneath the upper flange of the rail. The rails may be made of hard Krupp steel or other relatively non-magnetic material to reduce stray magnetic flux.
Patent GB-971293-A (GB)
Title: Improvements in apparatus for heating fluids
IPC: F24H1/14
Filed: 1963-03-21
Abstract: 971,293. Fluid fuel fired liquid heaters. FOSTER WHEEL Ltd. March 21, 1963 [March 21, 1962], No. 11307/63. Heading F4B. In a tubulous liquid heater, particularly for cryogenic liquids, having a bank of tubes for the liquid, air for combustion is heated within the double walls of the combustion chamber and cools the inner wall as it passes to a burner at one end of the combustion chamber. The walls 10, 12 are preferably of metal, the inner shell of a heat-resistant nickel alloy. The liquid is heated in a bank of tubes 16 at upper end of the combustion chamber 12, which is of rectangular cross-section. The longer walls 22, 24 of the shell 12 incline inwardly at the bottom to form a slot 26 into which burner nozzles 28 project. The space 38 between the shells 10, 12 communicates with the slot 26 and with inlets 40 in the outer shell 10 fed from blowers 44. The air thus flows down the space 38 in countercurrent to the gases passing up the combustion chamber 12 to the flue outlet 36. Shrouds 46 surrounding each burner 28 conducts primary air to the fuel and spaced from the edges of the slot 26 to allow the passage of secondary air. Tertiary air enters the combustion chamber 12 through inlets 52, arranged to supply about 10% of the air fed to the space 38.
Patent GB-1314462-A (GB)
Title: Signal generators
IPC: H03L7/185
Filed: 1971-04-26
Abstract: 1314462 Frequency synthesizers SPERRY RAND CORP 26 April 1971 [28 April 1970] 11315/71 Heading H3A A signal generator has a closed loop with series-connected elements comprising voltagetuned oscillator means 6, frequency mixer means 1, first frequency divider means 2, and frequency difference detector means 3, wherein there are means provided for adjusting a division modulus N of the first frequency divider means 2. The arrangement also includes second frequency divider means 4, including means for adjusting a division modulus X thereof, for supplying an input to the frequency difference detector means 3, and reference frequency source means 5 for supplying stable frequency signals to the frequency mixer means 1, and to the second frequency divider means 4, the means for adjusting the first and second frequency divider means being adapted to be operated so that the quantity N - X is an integer including zero. The output may be derived from the frequency mixer 1 via a harmonic generator 7. The frequency difference detector 3 may comprise coarse and fine means.
Patent GB-117941-A (GB)
Title: Improvements relating to the Tanning of Hides and Skins.
Inventor: LEVIN BERTRAM
IPC: C14C3/04
Filed: 1917-08-07
Abstract: 117,941. Levin, B. Aug. 7, 1917. Tanning with special chemicals. - In tanning with aluminium pyrophosphate, the hides are first saturated with a solution of an aluminium compound, such as alum, and subsequently with a solution of a pyrophosphate such as the sodium or potassium salt, or vice versa.