baber/WOPTO huggingface dataset:
Patent GB-942858-A (GB)
Title: Improvements in filamentary tows and yarns and in fabrics prepared therefrom
IPC: D02G1/18
Filed: 1962-03-01
Abstract: Yarn is spun from filamentary tow which, on conversion yields a blend of two types of staple fibres viz. one (e.g. 20-80% of the blend) having the property of spontaneously and irreversibly extending 1-30% on being heated and made of a synthetic linear polyester such as polyethylene terephthalate (see Specifications 841,130 and 841,229) and the other having the property of shrinking 0-15% on being heated. The differential change in length of the fibres of the two types when immersed in water at 100 DEG C. for five minutes is at least 3%.  The tow may be precrimped, as by "stuffer-box" or "jet relaxation".  The fibres may be stock or yarn dyed and/or the yarn may be twist-set. Bulk e.g. looped, effects are developed by heating the yarn, before or after knitting or weaving into fabric e.g. twill with weft and warp yarns of different and/or opposite twist and/or colour, so that a major proportion of the extensible fibre in the blend is distributed on the fabric surface.  The shrinkable fibre may be natural e.g. wool or man-made e.g. of cellulose acetate, regenerated cellulose, polyacrylonitrile, polyamide, polyester and/or mixture thereof, and may be preshrunk to reduce dimensional change in the fabric upon heating.  A measure of surface cover in a worsted fabric (so-called "Streakmeter" rating) is obtained by mounting the fabric on a rotating drum with the twill lines parallel to the axis of rotation, directing a beam of light along the twill line at an angle of incidence 45 degrees to the normal, and passing the reflected light through an aperture to impinge on a photo-electric cell which records change in intensity of light as a series of deflections.  The aggregated amplitude of these deflections divided by the number (of twill lines) gives a value which is characteristic of the degree of weave obscurity obtained by the bulking of the yarns.  In another test of surface covering, samples of fabric, which have been subjected to processes simulating anticipated treatments e.g. desizing, scouring, dyeing, napping, fulling, shearing, semi-decatising and/or from which fibres (the presence of which are not required to be assessed) may have been removed by selective solvents, are shaved (with a normal men's razor) over a fixed area, and the clippings are collected and weighed.
Patent GB-668443-A (GB)
Title: Improvements in or relating to electric discharge devices
Inventor: ROGERS DOUGLAS CECIL
IPC: H01J19/28
Filed: 1950-03-30
Abstract: 668,443. Thermionic valves. STANDARD TELEPHONES & CABLES, Ltd. March 30, 1950, No. 8045/50. Class 39 (i). An anode has a pair of flanges 19 extending parallel to the active surface 18 at the opposite longitudinal edges thereof, said flanges being joined by strips 20 to complete a coupling loop for eddy-current heating by a coil parallel to the active surface. The anode is made from two channel members, each having one wall bent outwards to form the flange 19, the other left straight to form a cooling fin 21. The fin portions are welded together so that the bases of the channels are aligned to form the rectangular active surface 18. The construction is completed by welding on the cross strips 20. In the valve of Fig. 1 (not shown), two such anodes are used, one either side of the cathode in a grounded grid triode, and taken out through the same top connection.
Patent GB-1198544-A (GB)
Title: Film Cartridge.
IPC: G03B23/12
Filed: 1968-02-19
Abstract: 1,198,544. Cine film cassettes. PANOPIX RESEARCH Inc. Feb.19, 1968 [March 7, 1967], No.8083/68. Heading G2E. In a film cartridge for use in a cine projector, a gate 50 is pivoted against spring 70 about shaft 56 by a projection on the film end as the film is wound back into the cartridge, this pivoted motion causing actuator 66 on the gate to operate a shutoff switch for the projector drive. The film may be 70 mm. wide with multiple picture rows and sound tracks and is held by portions 76 of the gate slot 78. Projections 80 in the slot support the film at blank strip portions along its length. The lid 20 of the cartridge has a boss 30 and the base 18 has an aperture 42 which together locates the film reel 32. Friction drive rollers engage the film through slits in the wall 16.
Patent GB-426094-A (GB)
Title: Improvements in or relating to snap-action electric switches
IPC: H01H13/68
Filed: 1934-03-14
Abstract: 426,094. Snap action switches. BECKER, Ltd., G., Ampere Works, Wembley Park, Middlesex.-(Vedder Ges., Geb. ; Schalksm³hle, Westphalia, Germany) March 14, 1934, No. 8093. [Class 38 (v)] A quick - action switch has an insulating contact arm 7 pivoted by an upstanding central part on a pin 3 which serves to hold in position a resilient arm 30, 31 having a curved central part 32 engaging a recess in the arm 7. Push buttons 33, 34 passing through holes in the cover bear on the resilient arm 30, 31. When the button 33 is depressed the arm 30, 31 is strained until the free end or a part 30<1> engages the contact arm positively to disengage a spring-pressed ball 11 from a recess 10 in the base of the contact arm, which then moves rapidly due to the resilience of the arm 30, 31 and the reaction of the ball 11 on the lower surface of the contact arm. Small compression springs 35, 36 may be placed between the contact arm and the resilient arm 30, 31 to assist the quick action.
Patent GB-609846-A (GB)
Title: Improvements in or relating to push-pull circuit arrangements for very short waves
IPC: H03H2/00
Filed: 1946-03-15
Abstract: 609,846. Electric resonators. PHILIPS LAMPS, Ltd. March 15, 1946, No. 8122. Convention date, July 28, 1941. [Class 40 (viii)] [Also in Group XL (c)] The two parallel wires connecting an oscillatory circuit to a source of energy or a load are crossed at a point such that the mutual inductance between the wires and the circuit is zero. The Figure shows two wires, normally a half wave-length long, connecting to the central conductors of coaxial oscillatory circuit 11, 11<1>, 12, crossed at a point 10 such that the voltage induced in the conductors is zero. The mutual inductance may be adjusted by varying the position of the crossover point or by providing movable screening plates between the conductors and the oscillatory circuit (Figs. 6 and 7, not shown).
Patent GB-946794-A (GB)
Title: Improvements in and relating to axial flow fans or compressors
Inventor: DALY BRIAN BOWMAN
IPC: F01D5/20
Filed: 1961-03-06
Abstract: 946,794. Axial-flow fans and compressors. WOODS OF COLCHESTER Ltd. March 5, 1962 [March 6, 1961], No. 8159/61. Heading F1C. In an axial-flow fan or compressor impeller working in a duct, the blade tips are rounded to promote a smooth leakage flow thereover, and curved in planes at right angles to the chord of the blade section so that the tip extends downstream of the gas flow relative to the greater part of the blade. This reduces noise caused by the shedding of unstable vortices near the tips, which operate in the boundary layer of the flow in the duct. Fig. 4 shows a cross-section at the blade tip in a plane at right angles to the chord of the aerofoil transverse section of the blade. The upstream surface 12 of the blade is curved towards a point 14 in a substantially circular arc with a centre 13, the arc being followed by a tangent between the points 14 and 19. The downstream surface 15 is curved in a substantially circular arc which may be of different radius and different centre 16 from the upstream arc, and the mean of the radii of curvature about the centres 13 and 16 may be of the order of one-fortieth of the radial length of the blade measured from the axis of rotation to its tip. The downstream surface-is radiused at 17 into a radial portion 18 ending at the point 19. The blade tip is curved through about 70 degrees, i.e., the angle 11 is about 20 degrees, and the tip may be machined at the point 19 into a cylindrical surface having the required clearance from the duct.
Patent GB-308588-A (GB)
Title: Improved method of mounting metal rings on the bases of bobbins for shuttles of looms with automatic bobbin change and improved bobbins
IPC: B65H75/10
Filed: 1929-03-13
Abstract: 308,588. Kern, E. March 24, 1928, [Convention date]. Bobbins &c. - The split spring rings c on a bobbin for use in the shuttles of looms wherein the bobbins are changed automatically are formed of diameter only slightly less than that of the cylindrical base a and are held in relative position by unsplit spacing rings d, the assembly being retained between flanges e, f.
Patent GB-256178-A (GB)
Title: Improvements relating to fluid pressure braking apparatus
IPC: B60T15/04
Filed: 1926-03-27
Abstract: 256,178. Westinghouse Brake & Saxby Signal Co., Ltd., (Assignees of Parke, F. H.). July 31, 1025, [Convention date]. Fluid-pressure. - Fluid-pressure braking apparatus comprises two braking equipments which may be applied either by straight air supply to the straight-air train pipe by means of a driver's valve and a controlling valve device associated with one of the brake equipments or automatically by a reduction in pressure in the automatic train pipe, such reduction being arranged to cut off communication between the straight-air train pipe and the controlling valve device of the equipment. The pipe supplying the brake cylinder 3 on the main locomotive is connected by the straight-air pipe 36 comprising a flexible hose connection 38 to a cut-off valve 16 on the auxiliary locomotive and through a cavity 39 in this valve and pipe 40 to the seat of the equalizing slide valve 11 in the distributing valve 5 and through passage 41 to the application cylinder 13. To effect a straight air application, the driver's valve 1 is operated to supply fluid under pressure to the application cylinder of the distributing valve 2 which supplies fluid under pressure from main reservoir 4 to the brake cylinder 3 on the main locomotive and to the application cylinder 13 of the distributing valve device 5 on the auxiliary locomotive. The movement of the piston 12 in the cylinder 13 supplies fluid from a reservoir 9 to the brake cylinder 10. A branch 34 of the automatic train pipe 32 normally supplies fluid to the piston chamber 14 of the cut.off valve 16, fluid also flowing through a feed groove 35 to. the valve chamber 17 and reservoir 7. The pressure on both sides of the piston 15 is thus equalized and it is maintained in normal position by a spring 44. On automatic application of the brakes, the drop in pressure in the automatic train-pipe 32 allows the higher pressure in the reservoir 7 to shift the piston 15 and thus cut off the straight-air pipe 36 from the distributing valve 5. The reservoir 9 is charged from themain reservoir 4 through pipes 29, 30 and a charging valve 8. Fluid flowing through a pipe 31 raises a diaphragm 18 in the valve 8 when the pressure has attained a certain value, thus raising a pin valve 21 and entering a chamber 22 to shift a piston 23 and a valve 25 connected thereto, allowing fluid to pass through pipe 30 to the reservoir 9. If the pressure in the pipe 30 is reduced by a burst connecting hose for instance, the consequent reduction in pressure causes the diaphragm 18 to be moved to close the pin valve 21 and the fluid in the chamber 22 escapes through a port 42 in the piston 23 and the valve 25 is closed to prevent escape of fluid from the reservoir 9. The port 42 is of such small cross-sectional area that, while charging, fluid enters chamber 22 more quickly than it can escape through the ports. Restrictions 37, 43 are provided in pipes 36, 30 to prevent leakage in case of a break-in-two.
Patent GB-146576-A (GB)
Title: Improved device for bending metal tubes
IPC: B21D7/022
Filed: 1919-04-03
Abstract: 146,576. Onions, J. W., and Crump, F. E. April 3, 1919. Angular bending and curving.-In an apparatus for bending tubes of the type in which one end of the tube is clamped to a non-rotatable grooved disk or the like round which it is bent by a roller or like carried between the limbs of a forked member pivoted to the axis of the disk, the clamp consists of a grooved roll or block carried by duplicate bars pivoted on the axis of the disk at opposite sides of the face thereof. A grooved disk former a, interchangeable according to the size of tube and diameter of the bend, is mounted on the squared central portion of a pivot pin d, the lower portion of which is enlarged and the upper portion reduced to form a bearing for the sweep-arm h. The tube is clamped against the former by a grooved roller e, the spindle of which is mounted in one of a series of pairs of holes c<1> in a pair of bars c. The sweep-arm consists of a pair of bars h clamped to a block j carrying the handle k and having slots l to receive the spindle of the grooved bending roller i<2>. The sides of the slots are bevelled to receive similar bevelled strips of length according to the diameter of former. The amount of the bend is determined by a peg m<2> mounted in one of the holes m<1> in a ring m. In a modification, Fig. 2, the clamping roller is replaced by a grooved block n, the slotted bars h by perforated bars, and the stop m<2> by a slotted step o secured bv bolts o<2> to the former a. Reference has been directed by the Comptroller to Specification 14372/05.
Patent GB-627285-A (GB)
Title: An improvement in or relating to the production of foam for fire-extinguishing purposes
IPC: A62C31/12
Filed: 1946-04-05
Abstract: 627,285. Making foam. NU-SWIFT, Ltd., and HENSHAW, T. A. April 5, 1946, No. 8387/45. [Class 47 (ii)] In a foam-producing nozzle of the kind in which air is entrained by a jet of liquid containing a foam-producing compound, the liquid under pressure enters the nozzle through a bore a2, containing a hollow nipple b, in a connector a secured to a tubular member c provided with air inlets c<SP>2</SP> and having a portion c<SP>1</SP> in the form of a frustum of a cone leading into a cylindrical or tapered discharge tube or foam chamber d. The nipple has reduced inlet and outlet openings b<SP>1</SP>, a<SP>3</SP> connected by a chamber b<SP>2</SP> of larger diameter. The inner surface of the cone may be provided with longitudinally-extending ribs forming convergent passages. Specification 588,045 is referred to.
Patent GB-118861-A (GB)
Title: Improvements in or relating to Carburettors for Internal Combustion or Explosion Engines or Motors.
Inventor: JUNG ALFRED JAMES
IPC: F02M9/12
Filed: 1917-06-13
Abstract: 118,861. Jung, A. J., and Tredwen, E. B., (Godward. E. R.). June 13, 1917 Spray carburettors.- The carburettor is of the type described in Specification 102,043 and comprises an outer tube A' secured by clamping-bolts F between a base-plate J and an upper cover E<1>, an inner tube A<2> fitted into the base-plate, both tubes being covered with gauze and absorbent material, and a suction-actuated bell A<3> between the tubes and provided with a depending cone A<6>. The f u e l nozzle A<4>, of gauze, is surrounded by an air valve consisting of a spring coil C, the smaller end of which may be at the top or bottom, and which is secured to a ring C<2> and is larger than the nozzle so as to leave a permanently open air passage. A plate A<7> limits the lift of the bell. The flow of fuel from the float chamber B to the nozzle is controlled by a manually-actuated valve D, the spindle D' of which is grooved to admit air, which ensures equality of level of fuel in the nozzle and float chamber.
Patent GB-667387-A (GB)
Title: Improvements in and relating to protected vacuum-jacketed jugs
IPC: A47J41/02
Filed: 1949-03-29
Abstract: 667,387. Jacketed hollow-ware. SMITH, L. LESLIE-. May 1, 1950 [March 29, 1949], No. 8522/49. Class 66 [Also in Group XIII] A vacuum jug has a cylindrical canister 1, which may have facets, ribs or corugations, and is of sheet, extruded or drawn metal, and a shoulder part 4 moulded integrally in a ceramic or a synthetic resin, with a pouring lip 5, a handle 8, a seating 6 for the neck of the glass vacuum jacketed vessel 2 and a portion 3 threaded &c. for attaching to the top of the canister. Instead of being unsupported as shown, the handle may rest at its lower end against the canister wall and be riveted thereto. In a modification, the threaded .portion 3 is formed externally on the moulded shoulder part 4 for screwing into the canister 1, and in this form the moulding may form a cylindrical or slightly conical extension of the canister of like diameter, Fig. 4 (not shown). The neck of the glass vessel 2 is positioned by packing 7.
Patent GB-226087-A (GB)
Title: Improvements relating to flap valves
IPC: F16K1/24
Filed: 1924-04-04
Abstract: 226,087. Vencl, Z. April 4, 1924. Hinged valves; closure members. - A hinged valve is operated by a spindle at right-angles to the axis of the seating, provided with an eccentric portion co-operating with a non-circular bore. The valve A has a hub B through which passes a spindle C carrying an operating lever E. The bore in the hub B is non-circular of the shape shown, and the spindle C has a longitudinal groove carrying a roller D of such a diameter that it extends outwards from the spindle a distance equal to the depth of the eccentric portion of the bore. When the spindle C is turned anti-clockwise, the valve disc first pivots about its lower edge so that it opens slightly at its upper edge, and then swings as a whole into a position at right-angles to the seating. The roller D may be replaced by other equivalent devices.
Patent GB-1067528-A (GB)
Title: Method of controlling the deposition of asbestos fibres and cement
IPC: B28B21/48
Filed: 1965-03-01
Abstract: 1,067,528. Asbestos-cement boards. JOHNSMANVILLE CORPORATION. March 1, 1965 [April 16, 1964], No. 8572/65. Headings D2A and D2B. [Also in Division F2] In a method of forming a fibrous sheet by deposition of a slurry on a conveyor the variation of thickness of the sheet across the width thereof is controlled by adding a flocculating agent at spaced locations to the slurry. The slurry contains asbestos fibres, cement, and silica. with the flocculating agent being as described in Specification No. 887,997, to form an asbestos-cement pipe by winding the sheet on a rotating mandrel 94, Fig. 10 (not shown), which has two rolls 106, 108 hydraulically pressed thereon, the rolls being permitted to rise as the pipe thickness increases. Alternatively an asbestos-cement sheet or board may be formed. As shown slurry flows over a weir 8 from a trough 2 containing a gate valve into a flow pan 20 having baffles 28 therein. The flocculating agent is supplied through piping 60 which has swivel joints so that nozzles 64, 65 may be positioned at the desired points. The slurry flows into vats containing two cylinder moulds which form a two-ply sheet on the conveyor. The flocculating agent may be added so that a sheet of uniform thickness is obtained-i.e. by counteracting any tendency for the apparatus to form a non- uniform sheet-, or so that a sheet having a greater thickness at the centre is obtained.
Patent GB-943654-A (GB)
Title: Folding roof for motor vehicles
IPC: B60J7/12
Filed: 1961-03-09
Abstract: 943,654. Vehicle roofs. R. KNIGHT. Feb. 23, 1962 [March 9, 1961; July 26, 1961], Nos. 8657/61 and 27060/61. Heading B7B. An aperture in a vehicle roof is closed by a flexible cover 11 releasably secured as by press studs 13 except at the rear so that it may be rolled up and secured at the rear of the aperture. The cover 11 comprises an outer layer and intermediate layer having reinforcing strips 12 and an inner layer.
Patent GB-119424-A (GB)
Title: Improvements in Means for Locking or Clamping the Heads of Brooms, Brushes and the like to their Handles or Sticks.
Inventor: FOERISDAL ANTON OLSEN
IPC: B25G3/26
Filed: 1918-05-25
Abstract: 119,424. Forisdal, A. O. May 25, 1918. Handles or holders with clamping retaining-devices for brushes &c.-The stock 7 of a broom &c. is clamped between a member 1 secured to the handle 4, and a loose member 2 pivoting about its upper end 10 when drawn towards the handle by the clamping device. The member 1 which may be formed from sheet metal has lugs 3' embracing and driven into the handle 4, a central curved hook or grip 5, and two lateral lugs 6 which serve as abutments against which the upper side of the stock 7 is pressed by the clamping-hook 11 on the loose member 2 as it pivots at 10 against the side of the handle 4 when tightened-up by the bolt and nut 8, 9.
Patent GB-146594-A (GB)
Title: Improvements in and relating to spray-producers and liquid-distributing sprinklers and nozzles
IPC: A01G25/14
Filed: 1919-04-07
Abstract: 146,594. Brooker, H. T. April 7, 1919. Combined roses and jets.-A cap a, Figs. 1 and 2, is fixed to the barrel b of a hand-pump or to a hose &c. and has a fine central opening x for producing a fine spray or mist and a number of holes h for producing jets, these holes being closed when required by rotating a disk valve consisting of a similarly perforated plate i, Fig. 3, provided with pins n for turning it. The pins pass through the slots m and may be attached to a perforated rubber &c. washer k, Fig. 4, with holes l registering with the holes j in the valve. A screwed plug e with helical grooves may be arranged as shown, and the stem may support a spring o pressing against the washer. The valve may be extended inwardly so that the central spray may be cut off when the jet-holes h are open and vice versa.