baber/WOPTO huggingface dataset:
Patent GB-432026-A (GB)
Title: Improvements in or relating to file-making machinery
IPC: B23D73/00
Filed: 1934-01-13
Abstract: 432,026. Cutting files. STUBS, Ltd., P., Warrington, and WINTERHOFF, W., 33, Grappenhall Road, Stockton Heath, Warring- ton. Jan. 13, 1934, No. 1254. [Classes 83 (ii) and 83 (iii)] Planing and shaping.-A machine for cutting files comprises a frame 10 having guides 12 for a reciprocating carriage 13 from which a tool holder 21 is flexibly supported so that by manual means such as a pedal the tool may be withdrawn from the work mounted on the carrier 24 at any part of the stroke. In a modification, the positions of the tool and work may be interchanged. The carriage 13 is reciprocated by an adjustable power-driven crank disc 17 and connecting rod 16 and the carriage is fitted with lugs 22 supporting by links 19 a frame 20 secured to the tool holder which is angularly adjustable around a bolt 34. The frame 20 carries a threaded rod 26 slidable through a lever 28 which is normally urged upwards by a spring 31. The end of the lever is carried on a spring 33 which is compressed to engage the tool with the work by means of a pedal acting on a chain 33b. The tool 23 traverses the whole surface of the blank, but on the return stroke the pressure on the pedal is released so that the spring 33 lifts the tool clear of the file point. In another modification the carriage may be actuated by a hand lever through a toothed sector and rack. Specification 13268/03, [Class 61], is referred to.
Patent GB-837351-A (GB)
Title: Improvements in or relating to luminescent materials
Inventor: RANBY PETER WHITTEN
IPC: C09K11/77
Filed: 1958-01-14
Abstract: 837,351. Luminescent materials. THORN ELECTRICAL INDUSTRIES Ltd. Jan. 13, 1959 [Jan. 14, 1958], No.1329/58. Class 39(1). A method of preparing a luminescent material comprises mixing together oxides of calcium, or of calcium and magnesium and oxides of silicon, cerium and lithnium or compounds which will thermally decompose to yield these oxides and heating the resulting mixture in a non-oxidising atmosphere to a temperature above 850C and below the melting point of the product, at least part of the cerium being present in the cerous valency state. Preferably in the resulting mixture the atomic ratio of calcium to magnesium lies between 1 : 0 and 1 : 5, that of calcium and magnesium together to silicon between 1 : 2 and 6 : 1, that of cerium to silicon lies between 0À002 : 1 and 0À1 : 1 and that of lithnium to silicon between 0À002 : 1 and 1 : 1.
Patent GB-731466-A (GB)
Title: Automatic sound reproducer
IPC: G11B33/10
Filed: 1953-01-16
Abstract: 731,466. Gramophone circuits. ASSMANN GES., W. Jan. 16, 1953 [Jan. 17, 1952], No. 1335/53. Class 40 (4). [Also in Group XXXVIII] An arrangement for indicating an interruption in a sound transmission system of a magnetic sound reproducing apparatus employing disc-shaped records, comprises the use of an induced auxiliary voltage to the transducer while in its position of rest at the edge of the record, whereby in the absence of a signal from either the said auxiliary source, or from the sound record, for a duration of more than 15 seconds a relay is operated to produce an indicating signal. The starting of the apparatus is initiated by a calling voltage at terminals 32, Fig. 4, which operates a relay 31 to close contacts 30 in the circuit of the motor and open the contacts 29 in the circuit of a magnet 13 carrying an audio-frequency tone signal. The transducer 11 traverses the record until at the centre of the record it comes into contact with an adjustable stop to close contacts 36, and operate a relay 34 which opens switch 33 to release relay 31, whereupon motor contacts 30 open and contacts 29 close. The automatic mechanism returns the transducer 11, by means not shown, to its rest or starting position where the magnet 13 induces an audiofrequency in the transducer 11. The resulting signal, or the normal sound signal, is amplified by amplifier 25, and is received by a relay unit 27 which initiates an appropriate signal should there by an absence of any sound signal for a period longer than 15 seconds duration.
Patent GB-118783-A (GB)
Title: Improvements in and relating to Speed Indicators.
Inventor: HART FREDERICK CHARLES
IPC: G01P3/18
Filed: 1918-01-25
Abstract: 118,783. Hart, F. C., and Noon, E. E. Jan. 25, 1918. Centrifugal speed indicators. - Relates to devices of the inclined-ring governor type. The centrifugal member comprises t w o plates connected by masses B and formed with toothed quadrants A gearing with pinions E. On the axis of the pinions is mounted a link F which is connected to a rod G passing down through the tubular rotor shaft C<1>. The movements of the rod G are transmitted to the index hand through a transverse lever, link, and toothed quadrant.
Patent GB-847373-A (GB)
Title: Improvements in or relating to a method of securing thin metal members to supporting means
Inventor: LUBSZYNSKI HANS GERHARD
IPC: H01J29/02
Filed: 1956-01-17
Abstract: 847,373. Soldering; jointing. ELECTRIC & MUSICAL INDUSTRIES Ltd. Jan. 17, 1957 [Jan. 17, 1956], No. 1516/56. Class 83 (4). In securing a thin metal member to supporting means by a process which is deleteriously affected by oxidation of the member and/or means, the member and means are heated in an atmosphere of air or oxygen to burn off any organic contamination on the member, whereby deleterious oxidation of the member and/or means is produced and subsequently the member and means are heated in a gas, capable of reducing action, at a temperature at which said gas causes reduction of the oxidation sufficient to enable the member to be secured to the means. The joining may be effected by diffusion or soldering. A silver mesh 1 is placed on a steel ring 2 plated wholly or partly with silver 3 and the assembly is furnace heated at 650‹ C. in air or oxygen to burn away organic particles on the mesh. Forming gas, 90% nitrogen, 10% hydrogen, is introduced into the furnace and the temperature is raised to 900‹ C., the reducing atmosphere cleaning the mesh and ring which adhere by diffusion between the silver of the mesh and the silver of the plating. The assembly is suitable for an ion trap in a television pick-up tube. A silver mesh may be similarly joined to silver-nickel or silver-copper alloy provided on the ring and the mesh may have 600 bars per inch, each bar being 0.0002 inch thick.
Patent GB-536155-A (GB)
Title: Improvements in windscreen wipers
IPC: B60S1/34
Filed: 1940-01-26
Abstract: 536,155. Windscreen wipers. DUDLEY, W. Jan. 26, 1940, No. 1573. Additions to 518,504. [Class 138 (i)] In a windscreen wiper in which the arm is pivoted on a bracket so as to be movable away from the screen against the influence of a leaf spring carried by the arm and bearing against a roller on the bracket, the roller 6 is carried at the lower end of a bracket 1 fixed to the oscillating spindle 2 and is vertically below the spindle.
Patent GB-428806-A (GB)
Title: Improvements in electric motor control systems
IPC: H02P9/12
Filed: 1934-01-17
Abstract: 428,806. Field control of two D.C. motors. ENGLISH ELECTRIC CO., Ltd., 28, Kingsway, London, and MARTIN, J., 31, Southern Parade, Frenchwood, Preston. Jan. 17, 1934, No. 1693. [Class 38 (iii)] Two traction motors have identical shunt fields 1, 2, each wound for less than the supply voltage, and connected in parallel, identical resistances 3, 4, being connected, one in series with the field 1 on the negative side thereof, and the other in series with the field 2 on the positive side thereof, the junction between one field and its resistance, being connected to the junction of the other field and its resistance, by the closure of a switch C1 or C2, upon the operation of the controller to its " off " position, so that the resistances 3, 4, serve as discharge resistances for the field windings. The resistances may be equal to the ohmic resistances of the field windings which are then wound to suit half the supply voltage. The switches C1, C2, are carried, one on each of two controllers situated at opposite ends of a vehicle, one switch only being provided if there is only one controller. The field strengths are controlled by resistance 5 and the fields are disconnected from the supply by the opening of a switch LP upon operation of the controller to the " off " position. The switch LP opens after the switches C1, C2 close.
Patent GB-668294-A (GB)
Title: Improvements in tenters
IPC: D06C3/00
Filed: 1949-01-21
Abstract: 668,294. Finishing fabrics. DUNGLER, J. Jan. 21, 1949 [Feb. 4, 1948], No. 1749/49. Class 42 (i). A tenter comprising gripping members secured to a flexible endless support is characterized in that the gripping members are fixed at the desired distance apart on the outer side of a flexible endless band disposed on edge, the weight of the movable assembly being supported by a set of spaced rollers, rotatable about horizontal axes, whilst the transverse pull of the cloth being treated is taken up by a vertical race on a fixed guide rail, a set of rollers carried by the endless band rolling on the vertical race. As shown, clips 1 are fixed to an endless metal band 5 by screws 6, 7 which also engage teeth 8 adapted to co-operate with cavities 9 in pulleys 10 located at the ends of the run of the band, one pulley being a driving pulley and the other loose. The face 11 of each clip, and the face 12 of the tooth 8 are domed to allow the clip and tooth some movement relative to the band. The band 5 rests on rollers 19, and guide rollers 15 mounted on extensions 13 of the teeth 8 roll on a race 16 on a stationary guide-rail 17. Band 5 may be of laminated construction. Teeth 8 may be dispensed with, drive being effected by friction between the band and the rim of the driving pulley.
Patent GB-538369-A (GB)
Title: Improvements in or relating to electron discharge valve circuits for the generation of electric currents of a desired waveform
IPC: H03K4/41
Filed: 1940-01-29
Abstract: 538,369. Valve generating circuits. WHITE, E. L. C., and BULL, E. W. Jan. 29, 1940, No. 1756. Addition to 522,637. [Class 40 (v)] A system for generating current of saw-tooth or other desired wave-form in the inductive output circuit of a valve comprises a feed-back path from the output circuit to the grid of a further valve the impedance of which controls the rate of charging of a condenser in the grid circuit of the first valve in such manner that the output current approximates closely to the desired waveform. A condenser 4 is slowly charged through a resistance 5 and is rapidly discharged through a blocking oscillating valve 6 when impulses are applied to its grid. The voltage on the condenser 4 is fed to the grid of a pentode valve 1, the anode circuit of which is transformer coupled to the scanning coil 15, the mid-point of the secondary circuit being earthed. The end of the coil 15 is connected to earth through a condenser 22 and a resistance 23, the time constant of the combination being equal to that of the scanning- coil circuit 15. The junction of condenser 22 and resistance 23 is connected to the grid of a valve 20 which is connected across the condenser 4. The cathode of this valve is held at a fixed adjustable voltage by connexion to a potentiometer across the supply. If the current in the coil 15 rises too rapidly, a positive voltage is applied through the lead 21 to the grid of the valve 20, so that current is diverted from the condenser 4 through the valve 20, and the rise of voltage on the condenser 4 is slowed down. In addition the valve 20 acts as an amplifier, and tends to reduce the grid voltage of the valve 1. The current in the coil 15 is thus caused to rise at the desired rate. When the condenser 4 is discharged through the valve 6, the current in the valve 1 and in the coil 15 falls rapidly, and the valve 20 is rendered non-conducting by the large negative voltage applied to its grid. Adjustment of the cathode voltage of the valve 20 affords control of the amplitude of the saw-tooth current. Spurious high frequency oscillation is prevented by damping resistances 12, 16 connected across the output transformer coils, and an adjustable resistance 28 is inserted between the condenser 4 and earth to adjust the phase advance in the feedback loop comprising valves 20 and 1. Correction for keystone and skewing effects may be provided as in Specifications 529,383 and 530,259. When the desired current wave-form is not a linear saw-tooth, but a curve of higher degree, further differentiating networks are required between the coil 15 and the grid of the valve 20.
Patent GB-432036-A (GB)
Title: Improvements in or relating to seed sprouting apparatus
IPC: A01G31/00
Filed: 1934-01-19
Abstract: 432,036. Sprouting seeds. GODFREY, B. H. L., Manor House, Woodchester, near Stroud, Gloucestershire. Jan. 19, 1934, No. 1875. [Classes 6 (ii) and 58] To sprout seeds in contact with a liquid a tray is provided to con tain the liquid with a main pipe leading there to, a branch pipe is ar ranged to lead into the main pipe and cocks are fitted on the main and the branch pipes to con trol the admission to and withdrawal from the tray. In the form shown a series of trays 11 ... 14 is supplied with water from a tank 15 by a pipe 16 provided with a main cock 18. A main drain pipe 17 is connected to the trays by pipes 22, 29, 35, 41 fitted with cocks 21, 28, 34, 39 respectively. The tray 11 is provided with a T-piece 23 to which the pipes are attached, the tray 12 with a sump 24 and a combined supply and drain pipe 25 leading to the T. piece 26, the tray 13 with a well 30 and combined supply and drain pipe 31 and the tray 14 with a T-piece coupled by flexible pipes 40, 41. The seeds are supported on wire trays 45.
Patent GB-384464-A (GB)
Title: Improvements in or relating to the treatment of sulphurous iron ores
IPC: C22B1/02
Filed: 1932-01-21
Abstract: Sulphide ores of iron, such as pyrites, are roasted with a limited supply of oxygen not substantially diluted with inert gases, whereby ferroso-ferric oxide, and free sulphur which can be condensed from the circulating gases, are obtained.  The oxygen needed may be obtained by the electrolysis of water, the hydrogen also produced then serving for reduction of the ferroso-ferric oxide.  The gases issuing from the reduction furnace, after removal of water, are recirculated with addition of fresh hydrogen which is preheated as by an electric arc or by addition of a little oxygen.  Heat is conserved by employing the issuing hot gases to preheat the incoming gases.ALSO:Sulphide ores of iron are rotated with a limited supply of oxygen obtained by electrolysis of water, and the hydrogen also produced by the electrolysis then used for reduction of the ferroso-ferric oxide.  The gases issuing from the reduction furnace, after removal of water, are recirculated with addition of fresh hydrogen which is preheated as by an electric arc or by addition of a little oxygen, and by heat-interchange with the outgoing gases.
Patent GB-488839-A (GB)
Title: Improvements in or relating to corrugated expansion pipes
IPC: F16L51/02
Filed: 1938-01-20
Abstract: 488,839. Expansion joints for pipes. HASSENKAMM, K. M. Jan. 20, 1938, No. 1891. Convention date, Feb. 19, 1937. [Class 99 (i)] In an expansion pipe joint comprising two pipe parts 1, 2 interconnected by a bellows-like member formed of a plurality of units 3, each unit consisting of a pair of conical plate rings which are connected together at their outer peripheries and to the rings of adjacent units at their inner peripheries, compression of the units is limited by stops located thereon. The stops preferably take the form of integral flanges 4, Fig. 1, along the inner periphery of one of each pair of rings constituting a unit, or by pressed-out projections 5, Fig. 2, on the said rings.
Patent GB-942945-A (GB)
Title: Ceramic materials
Inventor: GOODE ALLEN DAVIDSON
IPC: G21C7/24
Filed: 1960-01-19
Abstract: A neutron-absorbing fired ceramic mass comprises one or more finely divided oxides of gadolinium, samarium and didymium dispersed throughout the mass in amount 4% to 8% of its total weight, i.e. insufficient to cause porosity in the fired material. In an example a plastic mixture of ball and China clays, felspar (Narvic "Spae"), bauxilite, didymium oxide and water was extruded into rods and fired at 1200 DEG  C.
Patent GB-880461-A (GB)
Title: Safety rod for liquid-cooled, liquid-moderated nuclear reactor
Inventor: GUSTAFSSON AXEL GERHARD VAERNE
IPC: G21C7/16
Filed: 1960-01-19
Abstract: 880,461. Reactor control rods. BOFORS A B. Jan. 19, 1960, No. 1977/60. Class 39(4) A safety rod 13 is fastened to a cylinder 11 which is open at the bottom to the tank of a liquid-cooled and moderated reactor and can slide on a piston 6; the piston 6 is supported by a fixed hollow rod 4 which communicates with a distributer, with the space above the piston, and with a chamber 19. An electromagnet normally holds a dome 16 to close the chamber 19, and holds the piston and safety rod up; the distributer normally supplies lowpressure fluid to the piston rod 4. When the safety rod is to be dropped the magnet power is cut off and the rod and the dome 16 are released so that the interior of the piston rod communicates with the reactor tank through chamber 19 and a passage 10. The throttling effect of apertures 17, accentuated by a tapered part 14 of the cylinder, decelerates the safety rod near the end of its travel. The rod is raised by restoring the magnet power and supplying high-pressure fluid through the distributer.
Patent GB-568006-A (GB)
Title: Improvements in or relating to printing devices for addressing and like machines
IPC: B41L47/02
Filed: 1944-02-03
Abstract: 568,006. Addressing-machines; printing surfaces. JENNINGS, H. W. K. (Addressograph-Multigraph Corporation). Feb. 3, 1944, No. 2019. [Class 100 (ii)] Printing devices for addressing and like machines of the kind in which frames or carriers are constructed to retain printing-plates and index cards thereon, are constructed with frames or carriers F, Fig. 2, adapted to slide freely over one another. The frames F are formed from thin sheet metal with raised portions 20 on the front thereof presenting surfaces in a common plane upon which spacing portions SF, Fig. 21, projecting from the back of a similar frame F may slide freely. Fig. 2 shows how the ends of the frames are bent to form the raised parts 20 and the spacing portions SF which when the frames are stacked as shown in Fig. 21, are received in rails G formed in the lower frame. The spacing portion SF is united to the parts 20 by a flange 16. When the frames are stacked there is plenty of room for the printing-surfaces T, and to prevent the frames from catching in one another while being stacked, inclined guides 47, Fig. 26, are attached to the portions SF. The portions 20 comprise panels which form transverse boundaries of pockets adapted to receive printing-plates P, and index cards C. The longitudinal boundaries of the frame F comprise a bead UB formed by folding over the sides of the frame F to form a rounded edge 22, as shown in Fig. 10, and also a similar bend LB is formed on the lower boundary. Between the beads UB, LB, the frame is stamped to form a rib R, Fig. 10, by forming bends 27, 28, 29, the top surface R being in the same plane as the raised parts 20. Retaining lips L<1>, L<2> are stamped from the edges of the ribs to engage and hold the side edges of the index cards C and printing-plates P which rest in recesses P<1>, P<2> formed in the bottom of the frame F. The printing-plates P are formed with edges 35, 36 of reduced thickness, as described in Specification 568,005. The cards and printing-plates are inserted from the right as shown in Fig. 1, and the beads UB, LB have wider openings 26 to receive the edges of the cards and plates, the main part of the beads being inclined as at 25, 39, Fig. 10, so as to be a close fit to the edges of the cards and plates. The ends of the cards C are kept in place by a projection 33, and the plates P are held in place longitudinally by stops S on spring tongues ST provided on the frame F. The stops are depressed while the plates are inserted and spring in position when the plate is registered correctly. In modifications, the frames are constructed to hold more than one printing-plate, and these plates may be of different widths, and in some cases plates of L-shape may be used. Two L-shaped plates may interfit to form a combined plate of rectangular form. In some cases, one stop S may be provided for acting upon two printing-plates arranged side-by-side.
Patent GB-251569-A (GB)
Title: Flushing valves
IPC: E03D3/06
Filed: 1926-01-26
Abstract: 251,569. Jacobson, A., and Ogilvie, A. L. Jan. 26,1926. Valves controlled by pilot or relay valves.-A flushing valve of the kind actuated by conduit pressure acting on a diaphragm under the control of an auxiliary valve has a piston valve member working in a cylindrical seat both of which are provided with non-metallic contacting surfaces. The main actuating diaphragm 7 is held against a seat on the casing 1 by a cap 8 secured in position by a cover 15 screwed to the casing and is attached to the closed end 25 of the valve member 24 by means of a flanged stud 31. The valve member which has ports 35 is either moulded in hard rubber or is formed of a metal shell coated with hard rubber the coating extending over the top and lower edges. The valve seat is provided with a liner coated with hand rubber and the top is adapted to be engaged by the diaphragm when. the valve is in the closed position. The actuating chamber 10 is connected to the inlet 2 by a passage 52 provided with a strainer 54. This strainer which may be constructed to hard rubber comprises a perforated head 58 screwed to a flanged member 55 held in a recessed port in the casing by the diaphragm 7. The exhaust from the actuating chamber by way of passages 49, 50, 51 to outlet 3 is controlled the auxiliary valve 42 actuated by a push 38 against the action of a spring 45. The valve is recessed to receive a packing washer adapted to co-operate with a rib 44 on the cap 8 and the valve spindle 37 has grooves 48 adapted to co-operate with an annular groove leading to the passage 49. Leakage past the auxiliary valve spindle is prevented by a diaphragm 13 secured to the spindle by nuts 40, 41 and to a flange 11 on the cap 8 by a screwed cover 14.
Patent GB-1202045-A (GB)
Title: Improvements in or relating to artificial teeth
Inventor: THURMAN GEORGE SAMUEL
IPC: A61K6/083
Filed: 1967-01-16
Abstract: 1,202,045. Artificial tooth compositions. C.M.W. LABORATORIES Ltd. 3 Jan., 1968 [16 Jan., 1967], No. 2303/67. Heading C3P. [Also in Division A5] An abrasion-resistant artificial tooth is obtained by (a) forming a dough containing a methyl methacrylate polymer, monomeric methyl methacrylate and calcined alumina, and (b) curing the dough under pressure in a suitable mould. The methyl methacrylate polymer is suitably a homopolymer but may also be a copolymer comprising a minor amount of another alkyl (meth)acrylate, e.g. ethyl methacrylate. If desired, ethylene glycol dimethacrylate can be incorporated in the dough as a cross-linking agent; a colouring pigment may also be added. Benzoyl peroxide is a suitable catalyst for curing the dough.
Patent GB-120317-A (GB)
Title: Improvements in and relating to Elastic Fluid Turbines.
IPC: F01D5/02
Filed: 1918-02-08
Abstract: 120,317. British Thomson - Houston Co., (General Electric Co.). Feb. 8, 1918. Rotors; blades.-A turbine rotor is formed of two plates 5, 6 adapted to be pressed up from sheet material and provided each with an annular offset 7 adjacent the hub, permitting differential expansion of the wheel and hub to take place without undue stress under temperature changes. Rings 9 are forced over inner flanges R and riveted in place, while spacing members 11 are provided near the periphery, the blades 13 being secured in any suitable manner.