baber/WOPTO huggingface dataset:
Patent GB-575820-A (GB)
Title: Improved means for sharpening razor blades
IPC: B24D15/10
Filed: 1944-04-12
Abstract: 575,820. Sharpening razors. TIDY, T. April 12, 1944, No. 6767. [Class 60] A device for holding safety razor blades during sharpening comprises two frames 1, 2 having surfaces 3, which may be roughened, to engage the flat faces of a blade 5, and tapered extensions 6, adapted to be engaged by clips 7 to draw the frames together to clamp the blade therebetween. Each frame has therein guide pins, consisting of screws 8-10, serving to centre the blade longitudinally and to adjust it transversely, and each frame has lugs 13 extending outwardly and carrying a spindle 12 on which is a roller 11 adapted, when the device is in use, to rest on the hone and give the blade edge the correct sharpening angle. In a modification, the rollers are omitted and the lugs have curved extensions adapted to rest on the hone. The extensions 6 may be in the form of leaf springs inclined inwardly ; the clips 7 may be made of spring material. The spindles 12 of the rollers 11, or the curved extensions may be adjustable relatively to the frames 1, 2, in order to adjust the sharpening angle.
Patent GB-1082331-A (GB)
Title: Improvements in or relating to methods of enveloping electrical components
IPC: H01L21/56
Filed: 1966-02-16
Abstract: 1,082,331. Electric solid - state devices. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. Feb. 16, 1966 [Feb. 19, 1965], No. 6781/66. Heading H1K. To envelope an electrical component in a protective coating a suitable substance in powder or liquid form is applied to the surface of the component and the latter is then heated by passing current through it. The liquid may be a solution which dries out on heating; the powder may be a fusible or sinterable substance; the powder or the liquid may be a heathardenable resin. In the case of heat-hardenable substances heating to cause the substance to adhere to the component may be followed by heating at a different temperature to effect hardening. This second heating stage may, but need not, also be effected by current passage through the device: it may also be combined with a continuous-operation test. In Figs. 1 and 2 (not shown) semi-conductor diodes are carried along a production line in which they are dipped in an epoxy resin and hardener mixture in powder form, heated by current passage during and after dipping, moved past blowers which remove excess powder, and and then subjected to a currentvoltage characteristic test. This process may be adapted for semi-conductor devices with more than two electrodes.
Patent GB-453055-A (GB)
Title: Improvements in or relating to stud fastenings
IPC: A44B17/00
Filed: 1935-03-04
Abstract: 453,055. Stud fastenings. ROHRS, J., Schenefeld, Hamburg, Germany. March 4, 1935, No. 6826. [Class 44] The female member of a stud fastening has an annular rib f forming an inclined wedging surface, over which the plate portion d of the male member is slid to lock the head c of the latter member in the arched portion b of the female member after the head c has been passed through an insertion opening e and beneath projections i The annular rib is interrupted to form guide surfaces g. In the first form, Figs. 1 and 2, the bottom of the female member is arched downwardly at h to form the insertion opening and the edges of the arched portion b, adjacent the insertion opening, form the projections i In a modification, Figs. 6 and 7, the edges of the insertion opening e are drawn upwards to form the projections i. Locking may also be obtained by internal projections i<1>. Fig. 11, in the arched portion b at the height of the greatest diameter of the stud head c. The members may have round or polygonal plates, which may be ornamented.
Patent GB-860509-A (GB)
Title: Glass pressing apparatus
IPC: C03B11/06
Filed: 1959-02-27
Abstract: 860,509. Glass moulds. PITTSBURGH PLATE GLASS CO. Feb. 27, 1959, No. 6879/59. Class 56. A glass pressing apparatus comprising a mould having a moulding surface and vertically movable within a mould ring, a plunger having an opposing moulding surface and vertically movable within a plunger ring, the plunger and ring being movable to and from the mould ring and both rings being movable radially of the axis of the plunger, has circumferentially disposed means adapted adjustably to contact the plunger ring and the mould ring so as to maintain the mould in vertical alignment with the plunger. The device shown, forming one of a plurality secured to the table of a rotary turret pressing apparatus, comprises a mould ring 12 with chamfered upper periphery and centrally bored to receive the mould 14 vertically movable as by cam means. A plunger ring 22 is set in a recess 20 in an annular jacket 18 which is vertically movable to co-operate with the mould ring 12. The pressing plunger 24 slides in the ring 22 to form a glass article G with the mould 14. Four blocks 26 are welded to the jacket 18, each having angularly disposed circular and square bores 28, 30, the bore 28 being screw-threaded and leading to plain bores 32, 34 and the bore 30 being extended through an extension 36 of the block 26. Four ring segments 64 are held loosely in a recess 66 in the jacket 18 by stop members 67, the segments 64 being chamfered to engage the periphery of ring 12 and engaging a recess in the ring 22. The ring segments are separately adjustable, each being supported on a horizontal foot 52 on a square rod 50 sliding in bore 30 and having a screw threaded upper end 54 loosely fitting in a bore 48 in a guide bracket 44 which is engaged by a threaded cap 56 with a handle 58. A circular slug with bevelled end 68 engages the upper edge of the ring segment 64 and is moved by a circular rod 38 screwed into the bore 28 by a handle 42 and passing through the guide bracket 44 which is positioned by a washer 49 on the rod 38.
Patent GB-1107497-A (GB)
Title: Method of producing electric shunts for bridging a pn-junction in a semiconductor body
IPC: H01L21/308
Filed: 1967-02-13
Abstract: 1,107,497. Semi-conductor devices. SIEMENS A.G. 13 Feb., 1967 [12 Feb., 1966], No. 6882/67. Heading H1K. An electrical shunt across a PN junction of a semi-conductor device is produced by masking parts of the surface and removing the exposed areas of semi-conductor material, by means of a jet of a medium which attacks the material, until the PN junction is broken through. The jet may comprise abrasive particles, in which case the disturbed surface regions at the junctions form the shunt, or may comprise an etohant, in which case the surface of the cavity must be metallized to produce the shunt. The emitter region of an SCR, comprising an N-type silicon layer epitaxially deposited on a P-type surface layer of a silicon disc, is contacted by alloying an annular antimonycontaining gold foil provided with a regular pattern of holes. The surface is then sandblasted to remove the N-type layer exposed by each hole until the emitter PN junction is broken through to form a partial short circuit. The surfaces of the cavities formed may be metallized by vapour deposition to improve the shunt. The mask may also be a perforated plastics foil, e.g. of P.V.C., or a metal foil, e.g. of molybdenum or gold, laid on the surface. The semiconductor material may also be germanium or an intermetallic compound.
Patent GB-1508191-A (GB)
Title: Stringed musical instruments
IPC: G10C1/06
Filed: 1976-05-18
Abstract: 1508191 Pianos M D BUDD and D C EMMONS 18 May 1976 [19 Feb 1975] 6895/75 Heading G5J The keys 11 (Fig. 2) of a musical instrument strike solid members 7 which are in continous engagement with the strings 5. As described each string is attached to a wrest pin which passes through a small hole in an agraffe 6, over a groove in the member 7 and over a metal bridge 8 before being doubled round a hitch pin 9 and returned over bridge 8, over another groove in the same member 7 through another hole in the agraffe 6 and fixed to an adjacent wrest pin 4. The striking area 17 of the key comprises brass, wood and cork sections, one being selected to strike the member 7 by a rack and pinion mechanism 18, 19. The travel of the keys is limited by key stops 42, which when in a lower position permit an increase in the tenson of the string when the member 7 moves upwards and hence the rise in in the pitch of the note. Dampers comprising a felt strip 30 on a rod 27 with a felt pad 43 engaged by a layer of velvet on bar 33 are provided for each string. Vibration of a string induces a signal on electromagnetic transducers 34a, 34b connected to potentiometers which may be adjusted to produce a variety of tones.
Patent GB-842079-A (GB)
Title: Improved apparatus for forming the combustible charge for internal combustion engines
IPC: F02M1/10
Filed: 1959-02-27
Abstract: 842,079. Charge forming apparatus. GENERAL MOTORS CORPORATION. Feb. 27, 1959 [May 23, 1958], No. 6896/59. Class 7(3). In apparatus for forming the combustible charge for an internal-combustion engine, a single thermo-responsive element so controls a choke valve and the idling position of a throttle valve that the choke valve is open at an engine temperature lower than that at which the throttle valve is permitted to move into its normal idling position. When the engine is cold the parts are in the position shown in Fig. 1. The lug 66 engages the lever 58 to retain the choke valve 12 closed and the link 54 engages the upper end of the slot 56 to hold the cam 46 in the position in which the screw 44 is opposite the high step to maintain the engine at high idling speed. When the engine warms up the lever 40 rotates clockwise (Fig. 4). When it has rotated through 35 degrees the lug 66 on the rotary member 60 has moved through 70 degrees and the air flow in the induction system is able to open the choke valve fully open. If the throttle valve is left in its idling position, that is the screw 44 is in engagement with the cam surface 52-while the engine is warming up the lost motion connection enables the link 54 to move the end of the link sliding in the slot 56. If however the throttle valve is opened the cam rocks clockwise under gravity. As the engine continues to warm the lever 40 moves through the remaining 35 degrees and the cam 46 rocks clear of the screw 44. The end of the lever 30 opposite to that acted on by the thermo-responsive coil 34 is articulated to a piston 38 responsive to the vacuum in the induction system. The cover plate 36 to which one end of the coil 34 is secured is adjustable. A certain movement of the thermo-responsive element results in a larger angular movement of the choke valve than of the cam 46.
Patent GB-671588-A (GB)
Title: Improvements in or relating to differential-pressure regulating valve metering systems and methods
Inventor: HANNIBAL LESTER S
IPC: G05D7/01
Filed: 1950-03-20
Abstract: 671,588. Soil treatment. NAAMLOOZE VENNOOTSCHAP DE BATAAFSCHE PETROLEUM MAATSCHAPPIJ. March 20, 1950, No. 6903/50. Classes 6(i) and 6(ii) [Also in Group XXIX] A system for metering the flow of liquefied ammonia substantially at its liquefaction pressure to injection blades 19 drawn by a tractor and with their openings below ground comprises a metering orifice 3, and a regulating valve 9, the latter being controlled by the difference in pressures upstream of the metering orifice and downstream of the metering orifice but upstream of the valve. Liquefied ammonia is supplied from a cylinder 1 past a manually-actuated stop valve 5; and then past the metering orifice and regulating valve to the injection blades. Valve 9 is connected to a diaphragm to the upper surface of which the pressure of the liquid at the outlet from the cylinder is applied through a pipe 14. The valve and diaphragm are loaded by an adjustable spring 11.
Patent GB-497522-A (GB)
Title: An improved composition for treating natural sandstone, brickwork and the like
IPC: C04B41/50
Filed: 1938-03-05
Abstract: An improved composition for treating natural sandstone, brickwork, and slabs or tiles of natural sandstone or burnt clay, comprises an aqueous solution of an acid fluoride of an alkali metal or of an alkaline earth metal treated with silica, and hydrofluosilicic acid substantially free from hydrofluoric acid. Calcium hydroxide may be added to remove any remaining traces of hydrofluoric acid.  90 parts acid ammonium fluoride dissolved in water are mixed with 10 parts silica and the mixture shaken vigorously to separate out excess silica above that added to remove any hydrofluoric acid present.  The decanted solution, which is a neutral silicon ammonium fluoride, is mixed with an equal proportion of a 60 per cent strength solution of hydrofluosilicic acid and sufficient powdered calcium hydroxide. Suitable proportions by weight are: acid fluoride treated with silica 31 per cent, water 33 per cent, hydrofluosilicic acid 33 per cent, calcium hydroxide 3 per cent.  The composition is applied in known manner by spraying, brushing, &c.
Patent GB-1486345-A (GB)
Title: Device for extracting liquid from sludge
IPC: B01D33/04
Filed: 1975-02-19
Abstract: 1486345 Moving belt filter; endless band mixers BELLMER KG MASCHINENFABRIK Gebr 19 Feb 1975 [27 Feb 1974] 6951/75 Headings B1C and BID A filter comprises an endless, porous, moving belt I whose upper run is supported by a drainage grid 4, means 6 delivering sewage sludge on to one end of the upper run which carries it leftwards, and rows of staggered flow breakers 7 extending downwards to close to the belt to stir the sludge and prevent the belt being clogged by solids. Breakers 7 shown are open-ended tubes suspended from transverse rods (9) which allow them to pivot and ride over solid accumulations. The breakers could alternatively be fixed and possibly upwardly inclined in the direction of belt movement, thus tending to lift solids to the top of the bed. In Figs. 3 to 5 (not shown) breakers are prisms of triangular section, pivoted by upstream extending lobes, each row having a transverse bar (12) limiting downward pivoting. The leading edges of the prisms could be inclined, to lift solids. Cross-section and spacing may vary from one row to the next. The mixing induced by the flow breakers enhances the action of any chemical flocculants previously added to the sludge. Side walls 10 retain the sludge on the belt.
Patent GB-122975-A (GB)
Title: Improvements in Grinding Machines.
Inventor: DEHN FRANK BERNHARD
IPC: B24B41/00
Filed: 1918-04-25
Abstract: 122,975. Dehn, F. B., (Middleser Machine Co.). April 25, 1918. Tables &c. - The structure carrying the work-table is provided with bearings to engage necks formed in a vertical cylindrical supporting-column 10. The bearings 35, provided with separable caps, are secured, to a vertical bar 27, which forms a guide for the bracket 23 that carries the work support 13 by means of a compound slide-rest. The bracket is adjustable vertically by means of a screw operated by a hand-wheel 31 through bevel gearing. The grinding-head 12 is bolted to the top of the column 10.
Patent GB-471210-A (GB)
Title: Improvements in flame-proof electrical apparatus
IPC: H02G3/06
Filed: 1936-03-09
Abstract: 471,210. Cable-end sleeves; junction boxes. GENERAL ELECTRIC CO., Ltd., and RICHARDS, S. W. March 9, 1936, No. 7030. [Classes 36 and 38 (i)] A mechanical connection permitting the passage of a conductor from a flame - proof chamber 1, such as a cable sealing gland, to another flame-proof chamber, not shown, comprises a tubular member 6 through which the conductor passes and which is formed in one with the chamber 1. A sleeve 9 is rotatably mounted on the member 6, its inner surface making a flame-proof joint with the member 6 and its outer surface being screw-threaded for engagement with a complementary threaded part of the second chamber. The sleeve is retained on the member 6 either by a split ring 11 or by screws which are screwed into the projecting end portion of the member 6. After connection of the two chambers, the sleeve 9 is locked against rotation by a nut 14 which screws on a threaded portion of the tubular member 6 and which is adapted to bridge electrically the sliding surfaces of the sleeve and the member 6.
Patent GB-903420-A (GB)
Title: Improvements in continuous casting moulds
IPC: B22D11/059
Filed: 1960-02-29
Abstract: 903,420. Continuous casting - machines. MANNESMANN A.G. Feb. 29, 1960 [March 16, 1959], No. 7036/60. Class 83 (1). The walls of a continuous casting mould have externally open horizontal and vertical narrow slits 10, which may be filled with a plastic heat resistant substance such as graphite, or strip inserts of a material such as iron which is of lower thermal conductivity than the mould material.
Patent GB-950578-A (GB)
Title: Lap seam for coated cord fabric and method for making same
IPC: B26B3/00
Filed: 1962-02-23
Abstract: <PICT:0950578/C3/1> A splice for rubber-coated tyre cord fabric comprises two essential portions, a transverse cut vertical to the plane of the cords passing through the cord part of the fabric and a transverse cut oblique to the plane of the cords passing through the thicker lower layer of rubber.
Patent GB-589269-A (GB)
Title: Improvements in or relating to drawing-pins
IPC: B43M15/00
Filed: 1945-03-21
Abstract: 589,269. Drawing pins; spiked strips. CAMERON, W. M. March 21,1945, No. 7128. [Class 89 (ii)] Paper is secured to drawing boards &c. by strips having a number of pins attached to one edge so that the paper is not penetrated. A series of pins 8, Fig. 1 are connected to a strip 7 that engages the paper, the pins being pressed into the board beyond the edge of the paper. The strip may be of leather, plastic material, brass, steel, or rubber &c. or of rubber combined with metal. The surface of the strip may be ornamented and such strips may be used as a beading or ornamentation for panels &c. The strip may be in the form of links hinged at 13 to facilitate curving. According to the Provisional Specification, the part for engaging the paper may be hinged to that carrying the pins and pressed down by springs.
Patent GB-1113846-A (GB)
Title: Electrical resistor for introduction into a flame
IPC: H01C7/04
Filed: 1967-02-15
Abstract: 1,113,846. 846. Temperature-sensitive resistors. DANFOSS A.S. Feb.15, 1967 [March 5, 1966], No. 7193/67. Heading H1K. [Also in Division F4] A negative temperature coefficient resistor has a U-shaped body consisting of silicon carbide granules bonded with silicon oxynitride. Such a resistor is resistant to the conditions found in gas or oil flames and may be used as an ignition element or may be placed in series with the solenoid of an electrically actuated valve to turn off the fuel supply on flame-out.
Patent GB-557699-A (GB)
Title: Improvements in or relating to brakes
IPC: F16D55/33
Filed: 1942-05-27
Abstract: 557,699. Disc brakes. BENDIX AVIATION CORPORATION. May 27, 1942, No. 7200. Convention date, Aug. 16, 1941. [Class 103 (i)] A disc brake with spaced hydraulic actuating cylinders 16 has the cylinders made of cup-shaped stampings to the sides of which the supply pipe 21 is connected directly by welding or brazing. In a modification the supply pipe is in separate parts with their ends welded or brazed into one of two holes formed in the sides of the cylinders. The pipes may be bent to shape after the welding has been completed.
Patent GB-830454-A (GB)
Title: Improvements in or relating to road sweeping machines
Inventor: DEAR ALEXANDER THOMAS CAMERON
IPC: E01H1/05
Filed: 1957-03-05
Abstract: 830,454. Road sweeping machines. LEWIN ROAD SWEEPERS Ltd. Feb. 25, 1958 [March 5, 1957], No. 7201/57. Class 107 A road sweeping machine has a gutter sweeping brush at one side, the mounting of which comprises a parallelogram linkage having two vertical sides, one of the vertical sides being attached to the machine and pivoted about a vertical axis, the other side, which comprises two parts the lower of which carries the brush, being adjustable to incline its angle and that of the brush shaft to the vertical in one direction, preferably in a plane parallel to the direction of travel of the machine. As shown, the gutter sweeping brush 12 is mounted on a parallelogram linkage consisting of a vertical member 15 pivoted to the side of the machine about a vertical axis on brackets 16, two substantially horizontal members 19 and 20 each consisting of a pair of spaced parallel arms pivoted to the vertical member 15 at 21 and 22 respectively, and a further vertical member made up of two parts. One part of the further vertical member is constituted by a housing 27, pivoted at 38 to the member 20, which carries the shaft 28 supporting the brush 12 its upper end being connected to a reduction gear box 31 driven by a telescopic driving shaft, the other part of the second vertical member being formed by a casting 29 provided with a lug 30 having a screw-threaded hole through its centre. Adjustment of the vertical axis of the brush shaft 28 is accomplished by rotation of the bolt 35 which passes through the screwed boss 30 and lugs 33 and 34 welded to a plate 32 pivoted about a vertical axis on the top of gear box 31. The brush 12 is urged against the kerb by a spring-loaded device and may be raised vertically by the hydraulic ram 25. The gear box housing 31 is kept in the same orientation relative to the driving shaft by a further parallelogram linkage comprising the bottom member 20 of the main linkage and a second arm 39. Specifications 830,451, 830,452 and 830,453 are referred to.
Patent GB-163027-A (GB)
Title: Improvements in electric relay devices
IPC: H02H3/42
Filed: 1921-03-07
Abstract: 163,027. Metropolitan-Vickers Electrical Co., Ltd., (Assignees of Boddie, C. A.). May 4, 1920, [Convention date]. Electromagnetic relays.-A relay controlled by the power supplied and responsive also to the direction of current flow comprises a movable core 2, a stationary coil 4 centrally located on the core and energized by the potential of the supply, and two oppositely wound and equal stationary coils 3, 5 connected in series and arranged symmetrically on either side of the central coil so that the core tends to move in one direction or the other, according to the relative direction of flow in the current and voltage coils, and on the average tends to move in accordance with the electric power in the circuit. Normally, the core is maintained in a neutral position, with the bridging contact 6 to which it is connected located on the contact 7, by the combined action of the coils and the spring 10. With increase of power, the core is raised, completing the circuit 7, 8; with decrease, the core falls under its own weight. completing the circuit 7, 9. With reversal of current flow, the core is drawn down from the central position and the circuit 7, 9 completed.
Patent GB-941174-A (GB)
Title: An indoor board game
Inventor: CORBY PETER JOHN
IPC: A63F9/00
Filed: 1962-02-26
Abstract: 941,174. Indoor games. J. & L. RANDALL Ltd. Oct. 1, 1962 [Feb. 26, 1962], No. 7396/62. Heading A6H. Apparatus for playing a game comprises a board 1 folded and supported to represent an erect, natural hazard or structure, such as a cliff or mountain, building or pylon for example, and provided with holes 5 for locating pieces representing spikes 7 and ledges 6. The apparatus further comprises teams of models representing climbers, the models each having a base plate 11 for standing on ledges 6, a hook 10 for engagement over spikes 7, and a hook 12 for engagement by a ring 15 forming part of a device 13 for lifting the models. The models of each team are " roped " together, thereby limiting their relative movement, and the game involves the competitive transference of the various teams of models up and down the playing board, between successive spikes and ledges, by means of the lifting device 13.