baber/WOPTO huggingface dataset:
Patent GB-588360-A (GB)
Title: Improvements in apparatus for generating electrical impulses
IPC: H03K3/53
Filed: 1943-02-11
Abstract: 588,360. Pulse generating circuits. GENERAL ELECTRIC CO., Ltd., DUNHAM, C. R., and HALL, C. C. Feb. 11, 1943, No. 2321. [Class 40 (v)] In a pulse generator comprising a delay network which is discharged by the operation of a switch associated with a load at one end of the network to send a pulse through the load, a similar switch and load are inserted at the other end of the network, the two switches being operated successively in a variable interval less than the transit time of the network to reduce the width of the output pulse. The Figure shows a delay network 3 charged from a source 1 through a high impedance 2. When switch 4 is closed, a voltage appears across load 5 and a wave travels down the line to be reflected normally and eliminate the voltage across load 5, producing a pulse of duration equal to twice the transit time of the network. However, switch 4<1> is closed before the discharging wavefront from the other end reaches it, and initiates an earlier discharging wavefront to load 5 to reduce the pulse width. In Fig. 2 (not shown), a square waveform is differentiated to provide positive and negative peaks which are fed through oppositely connected rectifiers respectively to trigger thyratrons controlling switches 4, 41. The positive pulse to the thyratron controlling switch 4 is passed through a separate delay line to reduce the interval between switching to a value below the transit time of the network. A reciprocal form of apparatus may be used in which switches 4, 4<1> open short-circuit links across the loads.
Patent GB-788310-A (GB)
Title: Improvements in loose leaf screw post binders
IPC: B42F13/00
Filed: 1953-01-27
Abstract: 788,310. Loose leaf binders. NAGY, L. June 23, 1953 [Jan. 27, 1953; Feb. 19, 1953], Nos. 2330/53 and 4646/53. Class 146(1) A loose leaf screw post binder with inter-engaging screw posts 119-121 supporting the leaves between covers, the posts being threaded on their bottom plug 113, inside the cavity 115 at their top and along most of the outside surface of the main body 114, a narrow ring 114A being left blank at the bottom of the outer surface, and the outside threaded part on at least one post being engaged by a nut 116 to hold the covers and leaves in position. A number of posts 119-121 are secured to a metal bar 122 incorporated into the back cover (not shown) and a metal bar with slots 124-126 is riveted to a top cover 127 similarly slotted. Slotted sheets are filed on the posts 119-121, which are extended by further screwed-in posts as necessary, and the cover 127 is then placed in position and the nuts 116 for each post screwed tightly. Each nut has a top threaded part 117 while the lower part 118 is left blank, the two blank parts 114A and 118 preventing. jamming of the threads.
Patent GB-347627-A (GB)
Title: Improvements in filters
IPC: B01D35/02
Filed: 1930-01-23
Abstract: 347,627. Filters. SHAW, H. S. HELE- and BEACHAM, T. E., 64, Victoria Street, London, Jan. 23, 1930, No. 2366. [Class 46.] Liquid is forced by air or gas under pressure from a vessel a through a pipe a<7> into a casing b and through a hollow filtering element b<1>, held against a removable cover b<11> by a central rod b<10>, the filtrate being discharged through a three-way cock b<50> and pipe b<16>. Air or gas is supplied to the vessel a through a three-way cock b<6>. To cleanse the filter element it is removed with the cover b<11> from the casing and air or gas, supplied from the cock b<6> through a flexible pipe b<4> and the cock b<50>, is passed in the reverse direction through the element. The filter may be heated by gas, electricity or a paraffin lamp. As shown, the element b<1> is of the edge filter type and an electric heater c controlled by a rheostat c<1> is fitted in an outer casing d.
Patent GB-552806-A (GB)
Title: Improvements in welding metal elements
IPC: B23K9/035
Filed: 1941-02-21
Abstract: 552,806. Uniting by fusion. LINDE AIR PRODUCTS CO. Feb. 21, 1941, No. 2378. Convention date, March 1, 1940. [Class 83 (iv)] In forge or fusion welding members by applying a concentrated source of heat progressively along a narrow longitudinally extending zone, the conduction of heat from such zone to the rest of the parts is restrained by establishing between two points in the zone a single heat gradient which is substantially steeper than any heat gradient between points in the zone and points outside the zone. Shunting or warping of thin metal sheets such as in making railway cars, with the consequent necessity for subsequent stress relieving process, are thus avoided and austenitic stainless steels maintain their toughness and resistance to corrosion. In welding abutting plates P to each other and to a plate P<SP>1</SP> the parts are held by clamps C on a support F provided with a channeled part 12 through which a heat absorbing medium such as water; gas, refrigerant or other fluid preferably at a sub-atmospheric temperature is circulated at such a rate that heat is absorbed from the work at the point S at a rate substantially equal to the rate of heat input to the zone. The points A near the extremities of the work are thus kept cool and prevented from warping. The channel is of such shape that the heat absorbing medium is in the form of a thin film only, the part 12 may consist of rubber, fibre, copper or steel. Plates such as at P may be similarly welded to a Z-shaped bar or may be lap welded to each other, or a plate may be fillet welded to a plate at right-angles thereto. In another form, Fig. 3, the plates may be welded to a box girder 20 which forms a conduit for the circulation of the fluid. The box girder may be replaced by a reversed flanged channel plate the flanges resting on a gasket on the support. In another form a plate may be welded through holes therein to one limb of an angle bar or a pair of plates P, Fig. 7, may be welded to the angle by arranging the angle in a bevelled gasket 36 on a support and circulating the cooling medium through the passage 40.
Patent GB-949564-A (GB)
Title: Speed control system
Inventor: BANCROFT NORMAN ROY
IPC: H02P29/00
Filed: 1960-01-22
Abstract: 949, 564. Automatic speed control. PYE Ltd. Jan.13, 1961 [Jan. 22, 1960], No. 2409/60. Drawings to Specification. Heading G3R. The feed-shaft of a lathe is driven by a split phase motor through an electromagnetic coupling which is excited by a full-wave thyratron circuit controlled by opposing first and second tachometer generators driven by the spindle and feedshaft respectively. In this manner, the speed of the feed-shaft is controlled as a proportion of the spindle-speed, the speed-ratio being determined by a potentiometer across the first generator. The thyratron circuit may be replaced by a semiconductor controlled rectifier circuit. Specifications 871,437 and 942,680 are referred to.
Patent GB-347194-A (GB)
Title: Improvements in leaf filters
IPC: B01D29/00
Filed: 1930-01-23
Abstract: 347,194. Filters. ALLIOTT, E. A., Rostherne, Hervines Road, Amersham, Buckinghamshire, and MANLOVE, ALLIOTT, & CO., Ltd., Bloomsgrove Works, Nottingham. Jan. 23, 1930, No. 2412. [Class 46.] The bottom of a c a ing containing vertical filter leaves is formed as a sump to receive matter dislodged from the leaves, and is provided with means for filtering and draining off residual liquid. This means may comprise one or more auxiliary filters or one or more of the vertical filter leaves may project downwardly into the sump. As shown in Fig. 4 a sump 9 is formed below filter leaves 7 by sloping bases 1a, 3a, of a fixed part 1 of the casing and of a hinged door 3, which may be locked together as described in Specification 338,510, [Class 46, Filtering &c.]. The leaves 7 are supported by bolts 8 from a header 6, which has compartments 6a, 6b receiving filtrate separately from the upper and lower portions of the filter leaves through pipes 19, 20 respectively. The filtrate passes from the compartments 6a, 6b to a discharge main 22. The material under treatment is supplied to the casing through a pipe 11, a passage 14, formed between the meeting edges of the casing 1 and cover 3, and a slit 15. A spreader 16, preferably supported from the cover 3, is arranged above the slit 15. Air under pressure may be admitted through a valve 35 into the pipe 11 to assist in forcing the liquid through the leaves and in drying the leaves. Compressed air may also be admitted to the casing through a pipe 36 and valve 37 to force residual liquid back through the feed pipe before the door 3 is opened. An auxiliary filter 23 is provided in the sump 9. It may comprise, like the elements 7, a coarse gauze 25, Fig. 6, with fine mesh 24 on either side. The filtrate passes from the interior through a tube 27 and an annular passage in a sleeve 28 to the interior of a pipe 30, which is screwed into an outlet passage 29 in the casing 1, and which communicates by a tube 31 with the main 22. The element is placed in position by sliding the sleeve 28 over the tube 30 and is fixed by means of a thumb-screw 33 which screws into the end of the tube 30. Fig. 8 shows a modified arrangement in which two auxiliary filter elements 23a, 23b, are arranged transversely to the tube 30 and extend across the casing below the leaves 7. Each element comprises a boss 38 which is held between rings 39 on a sleeve 28b. The weight of the leaves 7 may be taken by runners 40, Fig. 13, bolted to the underside of the header 6. Flanges 10a on the bosses 10 of the leaves 7 engage with the runners. The flanges 10a and the runners 40 may have inclined faces so that the bosses 10 are brought into tight engagement with the header 6 as the leaves slide into position.
Patent GB-1111482-A (GB)
Title: Improvements in or relating to safety harness
Inventor: SPOUGE ERIC HERBERT
IPC: B60R22/415
Filed: 1963-07-19
Abstract: The subject matter of the Specification is identical with that of Specification 1,111,481 but the claims are concerned with a safety harness reel which is braked both by withdrawal of the strap sharply and change of velocity of the vehicle.  Means are provided to render the latter inoperative so that the reel is braked only by strap withdrawal.
Patent GB-836789-A (GB)
Title: Butane lighter filling unit
IPC: F23Q2/52
Filed: 1956-01-26
Abstract: 836,789. Reciprocating pumps. WEST, G. T. Jan. 25, 1957 [Jan. 26, 1956], No. 2550/56. Class 102(1). A unit for filling lighters with a change of liquified gas includes a bulk container 11 connected to a calibrated cylinder 14 through a stop valve 15 and non-return valve 14a; the cylinder 14 has a manually operated plunger 20 and is connected through a non-return valve 14b to a nozzle or nozzles 17 each appropriate to a lighter to be filled and controlled by a stop valve 18.
Patent GB-1142433-A (GB)
Title: Shanked fasteners
IPC: F16B43/00
Filed: 1967-01-18
Abstract: 1,142,433. Guide washers. HILTI A.G. 18 Jan., 1967 [21 Jan., 1966], No. 2554/67. Heading F2H. A shanked fastener 6 which is usually driven into hard receiving material by a driving tool 7 is provided on the shank with a guide disc or washer 1 having a central hole which fits the shank and one or more corrugations 3 extending outwardly from the central hole to the periphery of the disc or washer whereby flattening of the washer tends to increase the size of the hole and thereby facilitates removal of the washer, from the fastener shank when it is in position in the recieving material. The washer may have four corrugations at right angles or may have just one corrugation diametrically opposite to which is a slot so that the washer may be slid from the shank instead of passing over the head of the fastener as in the former.
Patent GB-1216531-A (GB)
Title: Improvements relating to power-assisted steering and like controls
Inventor: ADAMS FREDERICK JOHN
IPC: B62D5/093
Filed: 1967-01-18
Abstract: 1,216,531. Power-assisted telemotor steering systems. CAM GEARS Ltd. 29 Dec., 1967 [18 Jan., 1967], No. 2584/67. Heading B7H. In a power-assisted steering system comprising a reversible rotary manual pump 2, operation of which operates a multi-chamber spool valve 7 to determine the flow of pressure fluid to a double-acting servomotor 1, the pressure fluid is supplied to a central chamber 8 of the valve, the two sides of the manual pump communicate through inner chambers 5, 6 of the valve with the two sides of the servomotor in the neutral position of the valve, two lands 14B, 14C are effective on movement of the spool from the centre to close communication from the manually-operable pump 2 to one side of the servomotor 1 while opening communication with the other side of the servomotor and two end chambers 10, 11 of the valve intercommunicate with one another and with a fluid reservoir. In operation of the valve in either direction, the central chamber 8 is opened to one inner chamber (5 or 6) and the corresponding side of the pump 2, while simultaneously the other inner chamber is opened to one side of the servomotor and the other side of the servomotor is opened through the corresponding end chamber (10 or 11) to the reservoir. Low torque movements of the pump 2 displace the servomotor without displacement of the valve spool. A check valve 15 is provided in the pressure fluid inlet duct 9 which valve is opened on displacement of the valve spool from its neutral position by flanges 16 of the valve spool. In Fig. 2 is shown an actual valve in which displacement of the valve spool 27 is proportional to the torque applied to the pump gear 21. To this end the steering input member 25A is connected to the gear 21 by a resilient torsion bar 26 twisting of which causes axial movement of the valve spool through balls 24 engaging helical grooves 23A in the boss 23 of the wheel 21.
Patent GB-588637-A (GB)
Title: Improvements in valves for controlling the flow of molten metals
IPC: F16K5/02
Filed: 1945-02-01
Abstract: 588,637. Stuffing - box substitutes. CALLENDER'S CABLE & CONSTRUCTION CO., Ltd., HILL, H., and BECKINSALE, S. Feb. 1, 1945, Nos. 2591 and 29522. [Class 122 (v)] [Also in Group XXIX] In a valve for controlling the flow of molten metal, e.g. lead, access of air to the molten metal is prevented by submerging the valve in a bath of molten metal, e.g. tin. Thus, the valve may comprise a plug 1 in a body 2, which has inlet and outlet ports 7, 8 and is supported in a bath 12 containing molten metal to a level 13. The bore of the body 2 is lined with compressed asbestos incorporating a binding material and graphite for preventing seizure of the plug, which may occur if metal to metal contact surfaces are used, and the body and the lining are provided with slots 19, 20, 21, 22, whereby the molten metal in the bath 12 has access to the plug surface to prevent creepage of air from the output, between the plug and the lining, to the passage through the plug when the valve is closed, the edges of the slots in the lining and the inlet and outlet ports being lined with metal 23, 24 to prevent fraying of the asbestos. The container may be heated by a gas burner 41, in which case it is surrounded by a sheet-metal envelope 42 having openings 43.
Patent GB-1518106-A (GB)
Title: Rail tensioning
IPC: E01B29/46
Filed: 1976-04-13
Abstract: 1518106 Stretching railway rails during laying PERMANENT WAY EQUIPMENT CO Ltd 13 April 1976 [20 Jan 1975] 2656/75 Addition to 1294216 Heading E1G In apparatus for stretching the adjacent ends of railway rails towards each other for welding, wherein each rail end is clamped between a pair of jaws and wherein the two clamping heads are pulled towards each other by a pair of hydraulic rams as in parent Specification, the clamping head embracing the rail end 20 comprises a pair of opposed cheeks 11 connected below the rail by upper and lower elements 12, 19, each cheek 11 having an upstanding flanged post 14-16 pivotally supporting a cranked arm 15 which is linked to one of the rams and is thereby swung into clamping engagement with the rail web to act as a jaw. The arm 15 may carry a pivotal or resiliently-mounted jaw piece 18. The upper connecting element 12 may comprise a threaded rod having nuts 13; the lower element 19 may comprise a pair of parallel compression members. To allow assembly the post flange 16 is interrupted at 17 and the arm 15 is retained by a screwed-on plate 22 which can ride under the flange.
Patent GB-817194-A (GB)
Title: Improvements in or relating to electric cable joints
Inventor: DEAN NOEL SPENCER
IPC: H02G15/192
Filed: 1957-01-24
Abstract: 817,194. Insulating cable joints; preventing access of moisture. BRITISH INSULATED CALLENDER'S CABLES Ltd. Jan. 24, 1958 [Jan. 24, 1957; Feb. 7, 1957], Nos. 2659/57 and 4280/57. Class 38 (1). Moisture-proof seals between sleeve 4 and telephone cables 2, 14 are made by casting on the plastic cable sheaths cylinders 13, 15 of water-proof insulating material, which may also cover the plastic cable core insulation 17, and providing annular rubber or similar bungs 18 under axial compression to make circumferential seals with cylinders 13, 15 and sleeve 4. Cylinders 13, 15 may be of coldsetting expoxy resin and may have circumferential ribs of triangular or other crosssection. The sleeve 4 may be of rigid metal or of thermo-setting resin composition or may alternatively be of soft material such as soft lead or polyvinyl chloride in which case a reinforcing ring, such as a worm-driven clip, may be applied outside the sleeve over each rubber bung.
Patent GB-158506-A (GB)
Title: Improvements in change speed gear with progressive speed and reversing of motion, without toothed gear, for use on automobiles and on any machines or engines of whateverkind
IPC: F16H15/12
Filed: 1921-01-20
Abstract: 158,506. Samain, P. Jan. 20, 1920, [Convention date]. Void [Published under Sect. 91 of the Act]. Variable - speed and reversing friction gearing comprises a pair of discs 2, 3 thrust inwards against a driving-wheel 1 and a movable driven roller 4 by the resilient walls 13 of a casing. The wheel 1, which is carried on a hollow shaft 11, may be toothed as shown in Figs. 1 and 2, or conical as shown in Fig. 4. The roller 4, which may be spherical, Fig. 1, or lenticular, Fig. 4, is secured to a shaft 12, which moves longitudinally within the shaft 11, being actuated by a lever 10. Idle rollers 7, 8, Fig. 2, support the discs 2, 3 during forward driving as in the configuration illustrated. Rollers 5, 6 support them during reversed driving. The discs are adjusted by screws 14, having ball connections 15 with the discs, which may have faces formed of hard metal insertions 16, Fig. 4. The invention is applicable for driving motor-vehicles and machine tools.
Patent GB-1533033-A (GB)
Title: Radial cylinder pump
IPC: F04B1/04
Filed: 1976-01-23
Abstract: 1533033 Reciprocating pumps MASCHINENFABRIK HILMA GmbH 23 Jan 1976 [8 Feb 1975] 02710/76 Heading F1A A radial cylinder pump comprises a plurality of high-pressure plungers 19 reciprocated by an eccentric 5a in pumping chambers 18 supplied with liquid, via annular channel 16 and inlet valves 17, by at least one low-pressure, feed plunger 13, the output of which is greater than the input requirement of plungers 19, the surplus liquid returning to the supply reservoir 10 via passage 3a, restrictor 25, crank chamber 26 and variable restrictor 27. Plunger 13 is loaded by spring 14, and restrictor 27 is adjustable to increase the pressure in chamber 26 to overcome spring 14 to reduce the stroke of piston 13, and hence the pump output. Delivery may be stopped by opening valve 24 connecting channel 16 to reservoir 10. Plunger 13 draws from reservoir 10 via annular channel 8 and check-valve 11, and delivers via check-valve 15. Plungers 19 deliver via check-valves 21 to annular channel 22.
Patent GB-1204080-A (GB)
Title: A label sheet having a self-adhesive coating, for making tabs for the cards of card-indexes
Inventor: HEIMANN EGON
IPC: G09F3/10
Filed: 1969-01-17
Abstract: 1,204,080. Adhesive tabs. MAPPEI-ORGANISATIONSMITTEL G.m.b.H. 17 Jan., 1969, No. 2814/69. Heading B6E. [Also in Division B8] Indicia tabs for cards or card indexes are formed from a label sheet 1 adhesively mounted on a backing layer 3. The sheet is divided into rectangular tabs and each tab has a corresponding section of transparent film 4 adhesively mounted thereon. The tab is pulled off the layer 3 (which is adhesive repellant) and one end B of sheet 1 is folded over and stuck down. Indicia are made on the end B, the tab is pressed against a card with the folded-over edge resting on top and the free end of the film 4 is folded over the other side of the card to protect and hold the tab in place. In an alternative embodiment no film 4 is present and the sheet 1 is transparent. The inside of the folded-over portion has no adhesive on it and an indicia slip is held therein. In another embodiment, the backing sheet is transparent and a layer thereof is fixed on the inside of the folded-over end.
Patent GB-104364-A (GB)
Title: Improvements in the Connection of Circular Rotatable Bodies to Shafts and Apparatus for use in Effecting the said Connection.
IPC: D01D7/02
Filed: 1916-02-25
Abstract: 104,364. Courtaulds, Ltd., and Clayton, J. Feb. 25, 1916. Rollers; thread guides.-Glass roller-guides used in machinery for making artificial silk, for guiding the threads between the precipitating-bath and the tubular spinning-guides, are secured to their shafts by means of pitch or other setting material which is poured into the space 3 between the shaft and roller, and when set rigidly secures the parts together. The shaft end and the roller opening may be square or otherwise non-cylindrical.
Patent GB-567371-A (GB)
Title: Improvements in or relating to materials for and methods of polishing or finishing articles
IPC: C01B17/90
Filed: 1943-02-23
Abstract: 567,371. Abrasive materials. BALZ, W. G., and DAVIDSON, L. R. Feb. 23, 1943, No. 2971. [Class 91] An abrasive material for polishing articles preferably by the tumbling method comprises fragments of crushed granite having the sharp points and edges removed without destroying the angular character thereof. The abrasive may be prepared by subjecting the fragments to tumbling with an abrasive. The material may be used with other abrasives, pumice base compound being specified. In the preferred method of working, the tumbling barrel is charged with the articles to be polished, the prepared granite fragments, other abrasive material, and water. The articles may be further polished in a second step by the same method using a mixture of similarly prepared limestone fragments, steel balls, and a soapy solution. A final step may include similar treatment with a mixture of steel balls with soapy water.