baber/WOPTO huggingface dataset:
Patent GB-670512-A (GB)
Title: Improvements in controlling electrically propelled lift-trucks
IPC: B62B5/06
Filed: 1949-05-04
Abstract: 670,512. Controllers. WENNBERG, O. C. G., and WENNBERG, C. E. S. May 4, 1949. [May 7, 1948] No. 11920/49. Class 38 (iii). [Also in Group XXXI] In an electrically propelled lift truck steered and controlled by a walking operator by. a tiller, which is swingable about a horizontal axis and has a manually-operated contact device control the driving motor of the truck, a cam 'disc, which is keyed to a stationary shaft forming the horizontal axis, is adapted to controlling the contact device by a push rod engaging the disc so that the disc controls the speed of the motor. As shown, the electrically propelled lift truck comprises a load carrying portion 1, battery storage 6, a motor unit 4 carrying a traction wheel 5 and rotatable about a vertical axis for steering by the tiller 8. The tiller is swingable between a vertical position and a horizontal position about the shaft 9 in a, bearing housing 7. Keyed by the shaft 9 is the cam disc 10 against which bears a roller 22 carried by the push rod 19 carried in the tiller 8, which also carries a tappet 18 carrying an adjusting set screw 29. The upper end of the tappet 18 carries a fork 14 abutting in the position shown a flat surface 17 on a handle 11 which is rotatable about an axis A and carries contacts to control the electric motor 50<SP>1</SP> to give two speeds. The abutment between the surface 17 and the fork 14 does. not permit rotation of the. handle 11 to start the motor unless the tiller 8 has .been moved into zones I or I<SP>1</SP> when, the roller 22 enters a depression 34 in the cam disc 10, thus allowing the parts 18, 19 to. drop and permitting partial rotation of the handle 11. Zone II position of the tiller 8 permits the handle 11 to be rotated to operate the motor at the higher speed with the tiller 8 in positional zones O, O<SP>1</SP> the motor is stopped and a brake applied to a countershaft in the transmission from the motor to the wheel 5. The brake is formed by pivoted shoes 48 urged in the engaged position by a spring 48<SP>1</SP>. The brake is released by means of a, cam 40 on the tiller 8 engaging a roller 41 on a two-armed lever 42 connected to a brake arm 45 having a wedgeshaped end portion 46 which operates on roller 47 on the shoes 48.
Patent GB-149082-A (GB)
Title: Improvements in or relating to steam separators
IPC: F22B37/30
Filed: 1919-05-13
Abstract: 149,082. Johnson, C., and Hunt, W. T. May 13, 1919. Separators.-The separator is arranged within the boiler and is of the type in which the steam flows radially inward through tortuous passages formed by baffles. The separator comprises top and bottom plates a, c, Fig. 2, preferably octagonal in plan, the top plate having a central outlet b for the steam. The bottom plate is conical in shape and is connected to a bent pipe i extending below the water level in the boiler. The plates a, c are separated bv block of tubes f, which are preferably rectangular in cross section and formed of sheets of corrugated metal soldered together as shown in Fig. 4. The tubes may be slotted as shown, or perforated, in such a manner that the steam is forced to take a tortuous path in passing radially inwards to the outlet b.
Patent GB-826823-A (GB)
Title: Improvements in or relating to semi-conductor electrode devices
IPC: H01L23/10
Filed: 1958-04-15
Abstract: 826,823. Semi-conductor system envelopes. PHILIPS ELECTRICAL INDUSTRIES Ltd. April 15, 1958 [April 16, 1957], No. 11944/58. Class 37. A vacuum-tight envelope for a semi-conductor system comprises two parts of, e.g. iron, copper, brass, or aluminium provided with facing plane surfaces, one or more meeting grooves being formed in each of these surfaces, the walls of the grooves being substantially at right-angles to the surfaces. A layer of very soft metal, e.g. lead, tin or indium, is provided between the surfaces and fills the grooves. One of the parts has a flanged rim which embraces the other parts and maintains the parts pressed together.
Patent GB-494004-A (GB)
Title: Process for sealing off vessels containing gases
IPC: H01J9/40
Filed: 1938-04-21
Abstract: 494,004. Sealing leading-in wires into glass. EGYESULT IZZOLAMPA ES VILLAMOSSAGI R. T. April 21, 1938, No. 11971. Convention date, April 22, 1937. Addition to 404,566, [Group XI]. [Class 36] In sealing gas-filled electric lamps by enclosing the glass evacuating and filling tube within a sleeve or envelope of material having a higher melting point, and heating this sheath to soften the enclosed tube, which is sealed by effecting a change of shape, as described in the parent Specification, one or more current leads are located' within the softened tube so that they are sealed in position simultaneously with the sealing of the tube. The softened evacuating- tube is preferably compressed along the direction of its axis to effect the sealing. The sleeve may be made of an alloy containing chromium or nickel, or both these metals.
Patent GB-310875-A (GB)
Title: Improvement in cementitious composition
IPC: C04B22/00
Filed: 1929-04-17
Abstract: 310,875. Metherell, A., (Assignee of Barnhart, G. E., and Pfaff, H, E.). May 2. 1928, [Convention date].H. E.). May 2. Concretes and mortars, cement.-A waterproofing and glaze-forming composition for adding .to the gauging water of cement mortars and concretes comprises a mixture of metallic sulphates or other salts. The preferred mixture comprises equal volumes of aluminium, magnesium, sodium and potassium sulphates. 'Various changes may be made in this mixture, for instance some of the sulphates may be omitted or replaced by the sulphates of other metals, such as zinc or iron, or by other salts such as potassium or magnesium chloride or sodium silicate. Calcium chloride is not used. Examples of these modified mixtures are (a) two parts of sodium sulphate, two parts of zinc sulphate, four parts of potassium chloride and one part of magnesium chloride, and (b) equal parts of sodium silicate, aluminium sulpha.te. potassium chloride and magnesium sulphate. In making up the solution to be used as the gauging water, thirtv volumes of water are used to each volume of chemical.
Patent GB-233725-A (GB)
Title: Improvements in or relating to cases or holders for maps and plans
IPC: G09B29/06
Filed: 1925-05-08
Abstract: 233,725. Mengden, G. May 10, 1924, [Convention date]. Maps and charts.-Maps and plans for aviators, motorists, tourists, &c. are mounted as a series of bands of uniform width on separate pairs of rollers in a case provided with a window aperture, and are arranged so that by manipulation of two knobs any part of any band can be brought to the window aperture, one knob effecting longitudinal movement of all the bands. and the other knob effecting lateral shift of the bands in relation to the aperture. Fig. 1 shows an arrangement of five pairs of rollers b, b<1> mounted to slide on square-section shafts c, c<1> intergeared in two groups for simultaneous operation by means of a knob d<1>. The shaft e of the knob d<1> is provided with two loose gear wheels d<11>, Fig. 8, connected together by a spring e<1>, and each of the gear wheels is provided with a stud e<11> for engagement by a stud f on the shaft e, so that in either direction of drive the spring e<1> permits a variable movement of the unwinding rollers to maintain the bands taut. The rollers are connected together in pairs by sheet-metal plates g, Fig. 6, and nested together so that the bands are superposed, the band on the inner pair of rollers being lowermost. The plates g are formed with depending portions m, Figs. 6 and 11, for engagement, according to the direction of shift, by one or other of two pawls k<1>, k<11> sliding on a support l and operated by means of an arm bearing the second knob, not shown. The plates g are interconnected by overhanging portions n, Fig. 6, to move serially, two bands being exposed at a time at the aperture a<11>, Fig. 1, in the case a, and the others being concealed at either end of the case and held in place by spring catches p, Fig. 11, engaging in apertures in the plates g. The ends g<1>, Fig. 6, of the plates g are shaped to guide the bands. The rollers are made of metal and formed with a longitudinal slot for attaching the end of the band. The Specification as open to inspection under Sect. 91 (3) (a) comprises also constructions in which the case is made in two or three sections telescoping together, the roller shafts being then made telescopic. This subject-matter does not appear in the Specification as accepted.
Patent GB-841841-A (GB)
Title: Improvements in or relating to tools for forming dimples or like depression in sheetmetal
Inventor: GILBERTSON THOMAS
IPC: B21D22/04
Filed: 1955-04-26
Abstract: 841,841. Dimpling by spinning. FOLLAND AIRCRAFT Ltd. July 26, 1956 [April 26, 1955], No. 12031/55. Class 83 (4). A spin dimpling tool comprises a pneumaticallyoperated motor for rotating a dimpling die which coacts with a complementary fixed die and pneumatic thrusting-means for urging the rotating die towards the fixed die. From the housing 2 of a rotary pneumatic motor axially slidable in a body 1, extends the tubular stem 5 of a spring-loaded piston 6 slidable in a cylinder 4. A conical die 9 is mounted in a chuck 7 on the spindle of the motor. A fixed die 12 carried by an arm 11 co-operates with the die 9 and also with a spring-loaded pressure-pad 30. During operation, air enters the motor housing under the control of a valve 14 actuated by a lever 15, passes through ports 13 and the supply then divides to actuate the motor and to pass up the stem 5 to urge the piston 6 and the slidable assembly carrying the rotating die 9 towards die 12 to dimple the work which is located by a pin 10 of the die 9. A slidable ring 18, with longitudinal grooves 19 on its inner periphery, restricts the passage of fluid contained between partitions 16 and so damps the forward movement of the die assembly. The stroke of the tool may be varied by adjusting the position of projection 25 in the casing 3.
Patent GB-927750-A (GB)
Title: Vacuum cleaner nozzles
IPC: A47L9/02
Filed: 1962-03-29
Abstract: 927,750. Suction nozzles. UNION TANK CAR CO. March 29, 1962 [April 21, 1961], No. 12052/62. Class 8(1). In a suction nozzle a base member 10 with roller means 78, 60 adjacent to the front and rear edges supports between and parallel to the rollers, spaced walls 12, 14 forming an elongated suction opening 15 with narrow lips 16, 18 terminating substantially in the lower tangent plane of the rollers. A third parallel wall 30, forms a recess with the rear wall 14 to house a retractable brush 34 whose bristles 36 extend below the lower tangent plane of the rollers. For easy movement over a carpet there is a gliding surface 76 behind the brush substantially in the plane of the lips 16, 18, and there are tyres 61, 81 on the ends of the rollers 60, 78 which penetrate a soft floor covering but prevent the nozzle and gliding surface scratching a hard surface. The rear roller 78 has an adjustable eccentric mounting (not shown) so that the penetration of the nozzle into the floor covering may be varied.
Patent GB-796602-A (GB)
Title: Improvements in and relating to decorative hardboard and process of manufacturing same
IPC: D21H27/02
Filed: 1955-04-26
Abstract: 796,602. Laminates. SCHAFFER, L. L. April 24, 1956 [April 26, 1955; July 8, 1955], Nos. 12061/55 and 19881/55. Class 140. [Also in Group XV] A decorative hardboard comprises a base la of matted cellulosic fibres having a thin layer 2 of thin wood flakes pressed into one or both faces so as to be integral with the base. The wood flakes may cover the base completely or may have small gaps between them through which the base is visible. The flakes or the base or both may be coated thinly with an adhesive such as urea-, melamine-, or phenolformaldehyde polyvinyl or polyacrylic resins, elastomers, or casein in liquid or powder form. The flakes in moist condition may be distributed from a hopper on to the mat of damp or semidry fibres, preliminarily pressed into the mat by a roller, and the flake-coated mat finally hotpressed, e.g. between polished metal cauls which may be treated with a silicone parting agent. The pH value of the fibrous mat is between 4 and 5 during formation of the board to avoid discolouration of the wood flakes, which may comprise a mixture of flakes from different woods contrasting in colours or texture. The flakes may be obtained by planing, slicing, peeling, or cutting. The cellulosic fibres may be of wood, bagasse, straw, or flax, and may be made into a mat by air-felting or water-felting.
Patent GB-647776-A (GB)
Title: Improvements in or relating to automatic control systems
IPC: G05B11/01
Filed: 1948-04-30
Abstract: 647,776. Automatic steering control systems. SMITH & SONS (ENGLAND), Ltd., S., FURZEHILL LABORATORIES, Ltd., and MILSOM, F. R. May 5, 1947, No. 12136. [Class 38 (iv)] [Also in Group XL (c)] In an amplifier haying an input to two similar grid-controlled valves so operated that variation or commencement of an input signal produces a variation in opposite senses of the direct current through the valves, condenser means charged in accordance with the difference between the two currents provide a differential bias whereby the gain of the amplifier is increased for long duration variations, as distinct from short duration variations in the amplitude of the input signal. In the automatic course control system shown, for any disturbance in yaw a gyroscope 34 precesses and applies an A.C. signal proportional to the rate of turn in yaw to a high-gain amplifier 21 controlling through D.C. windings 63b, 64b of transductors 63a, 64a, a two-phase rudder servomotor 50, the latter operating at such a speed that the coupled two-phase generator 55 applies to the amplifier input a signal approximately reducing to zero the input signal, i.e. the rudder is operated at a counteracting speed proportional to the rate of yaw. The amplifier comprises balanced gridcontrolled triodes with A.C. voltage applied in push-pull to the anodes so that the A.C. input signal in parallel to the valves through condensers 72, 71 is either in phase or antiphase with its anode voltage, and the relative magnitude of the pulses of direct current alternately passing through each valve saturating the transductors therefore controlled by the input. The relative mean anode voltage of valves 65, 66 at the same time varies to charge through resistors 67, 68 the large capacity condenser 71 between the valve grids, producing delayed D.C. positive feed-back. Only a small input is necessary to correct any constant or long tendency to deviation in course as compared with momentary yaw so that although the rudder mean setting does not wholly eliminate any constant tendency to deviation in course actual drift is much reduced. The amplifier is a modification of the 'type described in Specification 611,048, [Group XXXVIII], and automatic control system of the type described in Specifications 611,037.and 617,240. The generator 22 and motor 19 are of the two-phase type described in Specifications 576,248, 576,249 and 576,351 respectively.
Patent GB-587152-A (GB)
Title: Improvements in buoyant electric cables
IPC: H01B7/12
Filed: 1943-07-26
Abstract: 587,152. Electric cables. OKONITECALLENDER CABLE CO., Inc. July 26, 1943, No. 12165. Convention date, Sept. 26, 1942. [Class 36] A buoyant electric cable of the kind described in -Specification 586,471 has the tubular core supplied with air under such pressure as to maintain the core under an internal pressure substantially above atmospheric pressure. The air cools the cable and prevents water entering at any puncture below the water line. The core 2 comprises a hollow spiral of metal or treated paper surrounded by a conductor 4, an insulating layer 6 of rubber or the like, a second conductor 8 and a sheath 10 similar to the layer 6. Floats 12 of treated wood or wood pulp and with curved ends are threaded upon the sheath 10.
Patent GB-1462090-A (GB)
Title: Clinker cement 0mpositions
IPC: C04B28/02
Filed: 1974-03-20
Abstract: 1462090 Cement composition SOC FRANCAISE LANCO 20 March 1974 [22 March 1973] 12307/74 Heading C1H A cement composition comprises ground clinker cement and from 0À5 to 3 wt. per cent of sodium thiosulphate as an adjuvant, based on the weight of the cement. One or more further adjuvants may be present. Based on the total weight of adjuvants, there may be present 1- 5% paraformaldehyde adjuvant, 1-10% sodium hydroxide adjuvant and 20-45% sodium nitrite adjuvant. A liquid composition comprising 50 wt. per cent sodium thiosulphate, 2 wt. per cent paraformaldehyde, 1 wt. per cent sodium hydroxide and 47 wt. per cent water may be mixed in a quantity of between 1 and 3 wt. per cent with cement. Alternatively, a powder containing sodium thiosulphate (50% by wt.), sodium nitrite (40 wt. per cent), paraformaldehyde (2 wt. per cent) and anti-coagulating agent (8 wt. per cent) may be mixed in an amount of between 1 and 2 wt. per cent with the cement.
Patent GB-353431-A (GB)
Title: Improvements in or relating to coal and like cutting machines
IPC: E21C35/04
Filed: 1930-04-22
Abstract: 353,431. Guards for coal -cutting machines. VERNON, W., The Elms, Kingsbury, near Tamworth, and THOMAS, S., Euroclydon, Weddington Road, Nun. eaton, both in Warwickshire. April 22, 1930, No. 12333. [Class 68 (i).] A guard for a coalcutting machine comprises a guard frame fitted to the rear of the machine frame adjacent the cutter jib and extending rearwardly, and one or more rearwardlydirected deflector plates carried by the guard frame. A skeleton frame 8 is pivoted to the machine frame by an arm 9 and pin 10 and is normally fixed thereto by adjustable arms 11 ; when the cutter jib 5 is to be slued, the arms 11 are released. A guard-plate 12 is fixed to the arms 9. 11 and has a groove 15 engaged by a pin on the top of the machine; it also has a guideflange 17 engaging the machine frame. A guardplate 13 on the coal-face side is fixed to the plate 12 and the jib ring 14. A guard-plate 18 is pivoted at 19 to the frame 8 and supported in guides 20, while it may be locked by a pin passing through a hole 22 ; the plate 18 is curved rearwardly to help to clear the cut. A deflector 23 for cuttings is adjustably and detachably fixed to the plate 12 on the goaf side of the machine by an angle bracket 24; a shorter deflector 26 is similarly fixed on the coal face side of the machine. A bar 28 surrounds the cutter-chain drive sprocket, being fixed to the deflector 23 and slidably supported in a bracket 29. The guard and scraper may be adjusted for either right or left-hand cutting, and for over or undercutting. A bracket 30 carries the electric cables to the machine. A scraper 31, Fig. 7, or 32, Fig. 5, is attached to a cutter box or at the front or back of a cutter to assist in removing cuttings.
Patent GB-804185-A (GB)
Title: Improvements relating to teat cup assemblies
Inventor: COUSINS SIDNEY HERBERT
IPC: A01J5/08
Filed: 1956-04-23
Abstract: 804,185. Teat-cups. GASCOIGNES (READING), Ltd. April 18, 1957 [April 23, 1956], No. 12334/56. Class 84. A teat cup liner comprises interfitting barrel and stem parts (A and B respectively) made of rubber or like material. The barrel is shaped as shown with a constricting portion 2A forming a seating for the head 1B of the stem. The parts fit sufficiently to resist normal tensioning of the liner but to come apart when they are pulled.
Patent GB-1140702-A (GB)
Title: Improvements in or relating to fluid control valves
IPC: F16K1/226
Filed: 1966-03-21
Abstract: 1,140,702. Valves. K. ADAMS. 21 March, 1966 [23 March, 1965], No. 12354/66. Heading F2V. A flap valve housing 3 accommodates a metallic annular seat 4 which is inclined to a transverse plane 5 at an angle alpha; the plane 5 is normal to the longitudinal housing axis 8 and includes a pivot shaft 7, the axis of which is normal to but spaced from the axis 8 (Fig. 2, not shown). The internal seat surface 9 is conical, the axis 10a of which makes an angle beta with the axis 8; one surface 10 of the cone is parallel to the latter whilst the other surface 12 makes an angle (gamma) with a line (15a) that is tangential to the arcuate path (15b) of a point on the movable closure member sealing element (13), which angle is about 10 degrees for a check valve. The corresponding angle delta associated with the surface 10 is about 35 degrees. The conicity of the surface 10 (eta) is twice the angle beta and depends upon the angle (gamma) and hence the axial position of shaft 7 which should intersect the seat surface at or close to a point (14) located at a maximum distance from the axis 8. The distance between the shaft 7 and axis 8 depends upon valve size and whether the valve is of the check or shut-off type.
Patent GB-1382377-A (GB)
Title: Hydraulic pressure control valve
IPC: B60T8/48
Filed: 1973-03-14
Abstract: 1382377 Automatic regulation of vehicle brakes AISIN SEIKI KK 14 March 1973 [14 March 1972] 12387/73 Heading F2F A control valve device 10 for transmitting hydraulic pressure from a pressure source such as a master cylinder 30 to a brake mechanism and overriding the control pressure to transmit a greater or lesser pressure in response to an electrical signal such as that obtained from a vehicle wheel rotation sensor comprises a piston 12 slidable within a housing 11 and having first and second pressure chambers 60, 36 for urging the piston in one direction and third and fourth pressure chambers 53, 67 for urging the piston in the opposite direction, movement of the piston from rest causing interruption of a passage from the third chamber 67 to a drain port 70 and opening of a passage therefrom to a port 48 for communication with the brake mechanism 51, means for connecting the second chamber 36 to the master cylinder, means for connecting the first, third and fourth chambers to a power pressure source and means for creating a pressure differential between the first and fourth chambers in response to electrical signal. A pump 38 charges an accumulator 41 via a check valve 40 and conduit 42 and the fluid passes via a check valve 43 to an annular groove 45 of housing 11 and an annular groove 46 of piston 12, an annular groove 47 being connected through an outlet 48 to wheel cylinders 51 and to compartment 53 through a radial port 52 in piston 12. Chamber 60 is connected to a junction 63 in conduit 42 and to a nozzle 6. Similarly chamber 67 is connected to the junction 63 and to a nozzle 72 facing nozzle 66, both nozzles discharging to a reservoir 37 via a further conduit (not shown). A torque motor 73 has a flapper 74 pivoted on a pin 75 with one end lying between nozzles 66, 72 and the other end lying between a pair of magnets 76 and a coil 77 being wound on the flapper and being connected to a wheel sensor providing the electrical signal. A switch 83 is opened when pedal 29 is depressed and a brake responsive variable resistance 84 varies the potential on the base of a transistor 85 so that a condenser 80 discharges in proportion to the depression of the pedal 29. The output of generator G responsive to vehicle speed is lower or higher than the voltage of condenser 80 depending on the braking effort and the flapper 74 is moved accordingly by circuits including amplifiers 81, 82 and transistors 87, 86.