baber/WOPTO huggingface dataset:
Patent GB-1202312-A (GB)
Title: A shut-off device for driver's brake valves of compressed air brake installations on rail vehicles
IPC: B60T15/04
Filed: 1968-02-13
Abstract: 1,202,312. Railway braking systems. KNORR-BREMSE G.m.b.H. 13 Feb., 1968 [14 Feb., 1967], No. 6950/68. Heading F2F. A safety device for compressed-air railway braking systems comprises between the train pipe and the driver's valve a shut-off member which, when the brakes are applied, shuts off the driver's valve from the train pipe and vents the latter to the atmosphere so that a leak of pressure from the driver's valve cannot enter the train pipe and cause unintentional release of the brakes. In Fig. 1 the driver's valve 2 is isolated from the brake pipe 3 by a valve 4 operated by an auxiliary shut-off valve 18. In normal operation valve 18 allows compressed air from the train pipe 20 to flow through lines 19 and 17 to chamber 16, wherein piston 12 moves to the left to lift valve 7 off its double annular seat 8a, 8b. Thus a connection is established between the driver's valve 2 and the brake pipe 3 via chambers 6 and 9. When the driver's valve is closed, leaks therein, which could result in a rise of pressure in the brake pipe 3 and premature release of the brakes, are nullified by moving valve 18 to its other position. Line 17 is now vented to the atmosphere so that piston 12 is driven to the right by a spring 15, uncovering the end of the hollow valve stem 13, and venting this to the atmosphere via chamber 11. At the same time, the valve 7 seats on 8a, 8b isolating chamber 9 from conduit 5 and the driver's valve 2. The piston 12 may be moved manually by a direct connection. In an alternative form (Fig. 2) the auxiliary control 18 is replaced by a special position on the hand lever 1 in which the pressure in the regulator 21 is reduced to atmospheric. As before, a piston 36 then moves to the right allowing a valve 35 to close and isolate the brake pipe 3. Chamber 26 is also reduced to atmospheric pressure so that any pressure remaining in chambers 24 and 29 moves a piston 28 to the right. A valve tube attached to this piston is then unsealed from a valve plate 30 and chambers 24 and 29 are vented to the atmosphere via this valve tube. When the lever 1 is moved to its normal position pressure rises in line 25 and via pistons 28 and 36 forces both valves to the left, connecting chamber 29 to the pressure in regulator 21, and consequently connecting this to the brake pipe 3 via chamber 24. This arrangement with a relay valve 22 can also be used with a separate control 18 (Fig. 3, not shown). In another modification of Fig. 2 (Fig. 4, not shown) the driver's valve operates an impulse valve (40) which operates the relay valve 22 directly and the other valve 35 via a reservoir and non-return valve (41) to the other side of which the auxiliary control (44) is connected. This gives a quick-acting control, and may be used with the regulator 21 instead of an impulse valve.
Patent GB-347386-A (GB)
Title: Improvements in or relating to the heating of fluids of all kinds by means of electrically-heated resistances
IPC: F24H1/10
Filed: 1930-03-03
Abstract: 347,386. Electric fluid heaters. LEFFER, L. G., Kapellen, near Neuss, Germany, and BERGEN, P. VAN, 20, Damrak, Amsterdam. March 3, 1930, No. 6991. [Class 39 (iii).] Fluids are heated by causing them to flow over and through electric resistances consisting of loosely packed hollow bodies of metal &c., Figs. 2 to 5 show various forms of resistance bodies. These are packed in a casing c having an insulating lining b, perforated electrodes d, e at its ends and water inlet and outlet a, z. The bodies are preferably packed in superposed layers.
Patent GB-252828-A (GB)
Title: Improvements in the manufacture of anchors
IPC: B23K33/00
Filed: 1925-03-16
Abstract: 252,828. Taylor, H. G. March 16, 1925. Anchors of the type in which the blade-carrying arms are rigid with the shank, are made by forming a dovetail or other groove across the innner surface of the arms, which are formed of or made up into one piece, and welding therein a corresponding projection on the shank. The arms C are formed with a dovetail groove in which is welded electrically or by the oxyacetylene process the dovetailed end of the shank A. The shoulders on the shank above the dovetail are slanted back so as to receive the welding metal. According to the Provisional Specification the arms may be formed with a hole or recess in which is welded a similarly shaped projection on the shank.
Patent GB-698819-A (GB)
Title: Improvements in or relating to automatic apparatus for dispensing pressurized fluid
Inventor: STURMER ROBERT LEROY
IPC: B60S5/04
Filed: 1951-03-27
Abstract: 698,819. Fluid-actuated valves. NELSON SPECIALTY CORPORATION. March 27, 1951, No. 7059/51. Class 135 An automatic apparatus for dispensing pressure fluid, particularly for tyre filling, includes a casing 11 with an inner supply chamber 64 containing a valve 59 to control the intermittent out-flow of fluid at 24, snap-acting means for moving the valve from normally closed to open position pivotally supported on and controlled by a diaphragm 36 responsive to outlet pressure and loaded by adjustable resilient pressure means 18, 26. When pressure at the outlet 24 falls, pressure in the diaphragm chamber 38 is quickly equalized through the check valve 55 and passage 53, so that spring 26 moves the diaphragm 36 carrying a head 30 downwardly. A lever 43, limited in its movement about a pivot 41 on the head by the end fork 44 engaging a fixed pin 45, has its other end, formed with cams 43a, 43b, snapped past a spring roller 46, so that the forked end lifts the spring-loaded valve 59 which allows fluid to flow from the inlet 23, via passage 63 and chamber 64 to the outlet. Back pressure in the outlet acts via passage 53 and a restriction 55a by passing the check valve to build up pressure slowly in chamber 38 until the diaphragm rises and the lever snaps past the roller and allows the valve to close. The valve snaps open again when the high pressure is dissipated through the outlet.
Patent GB-924780-A (GB)
Title: A suction cleaning device
IPC: A47L5/00
Filed: 1962-02-23
Abstract: 924,780. Buoyant hoses. A. J. CHERNEY. Feb. 23, 1962, No. 7117/62. Class 99(2). [Also in Group XXIII] The hose for a suction cleaner for water tanks comprises two flexible sheaths 32, 33 e.g. of polyvinylchloride sheeting, defining between them a series of air pockets 34 which cause the hose to be buoyant and float. The hose may be reinforced by a spiral winding 35 of resilient wire or plastic tubing.
Patent GB-313111-A (GB)
Title: Improvements in or relating to circuit arrangements for use with high frequency currents
IPC: H03B19/10
Filed: 1928-03-07
Abstract: 313,111. Green, E. March 7, 1928. Thermionic amplifiers and generators. - A balanced-bridge arrangement of the type described in Specification 241,289 is arranged to serve as a frequency-changer, the input circuit V, R1, R2 and the associated elements of the bridge being tuned to the fundamental frequency, whilst the output circuit L1, L2, K1, K2 and associated bridge elements are tuned to any desired harmonic frequency. Each arm of the bridge contains variable resistance, reductance, and capacity elements r, P, and C, respectively, and these are adjusted to be equal each to each. For highfrequency working, an auxiliary condenser D1 is inserted in the arm containing the anode-grid capacity A, G of the amplifier. The bridge elements P4, D1 in the amplifier arm are also adjusted so as to have an inductive reactance at the output frequency, between the point 4 and the grid G, so that a certain voltage at the output frequency is applied to the grid in correct phase, but without loss of balance, i.e. no current of output frequency is fed back to the input. A large grid-bias B should be used and a strong drive applied across the coil V. The system remains balanced over a range of frequencies. To produce odd harmonics only, a second amplifier may be inserted in the arm containing the condenser C2.
Patent GB-1461908-A (GB)
Title: Disposable diaper
IPC: A61F13/15
Filed: 1973-02-14
Abstract: 1461908 Disposable diapers SOUTHALLS (BIRMINGHAM) Ltd 12 Feb 1974 [14 Feb 1973] 7149/73 Heading A5R A disposable diaper comprises in combination a rectangular flexible waterproof synthetic resin backing sheet 10, an absorbent layer 12 of plied cellulose, and a moisture pervious woven or non-woven surfacing sheet 11, the edges of the surfacing sheet 11 and backing sheet 10 being turned over the edges of absorbent layer 12 and secured together by adhesive, and the side edges 13 of the diaper being gathered midway between their ends by folds ,15 secured by stitching through the side edges or by an adhesive to reduce the length of the side edges and the central width of the diaper and to produce a central pleat 16 in the diaper when the end edges of the diaper are pulled away from one another prior to use, the side edges of the diaper then bowing inwardly to facilitate fitting the diaper to the human body.
Patent GB-160655-A (GB)
Title: Improvements in connection with beehives
IPC: A01K47/00
Filed: 1920-03-09
Abstract: 160,655. Parrington, R. March 9, 1920. Beehives.-A floor for beehives consists of a removable centre portion b made of wood, metal, or glass, or as a mirror, which slides in grooves in side strips a, preferably made of lead or covered with lead and attached to the walls of the brood chamber or body-box. Suitable slots closed by shutters are made in the walls of the hive so that the central portion b of the floor can be removed and replaced without opening the hive or disturbing the bees. The slots in the walls of the hive are in alignment so that the centre portion of the floor can be pushed out through one side by inserting a similar portion through the opposite side of the hive,
Patent GB-229124-A (GB)
Title: Improvements in and relating to supports for seats and the like
IPC: A47C4/30
Filed: 1924-03-21
Abstract: 229,124. Collier, V. March 21, 1924. Folding seats; bottoms ; fixing furniture to floors and walls.-Supports for detachable canvas seating surfaces comprise upper and lower rails independently supported by parts in movable connection with a wall, floor &c., the connection permitting the parts to be folded against the walls, floors &c., or into slots or recesses therein. Fig. 1 shows seating surfaces 24 detachably carried by rails 13, 18, the lower rail 18 being carried by arms 17, 19 which can be lowered through slots 16 in the floor. Fig. 8 shows an arrangement in which the lower rail 18 together with the arms 44 and legs 45 can be folded up against the wall 11, while in some modifications described both upper and lower rails can be folded away when the seat is not in use. Specification 187,889 and 209,572 are referred to.
Patent GB-432816-A (GB)
Title: An improved method of emptying tanks and valve apparatus for effecting said method
IPC: B64D37/26
Filed: 1934-03-07
Abstract: 432,816. Linkwork ; gearing for conveying and inter-converting reciprocating and oscillatory motion. MULLER, J., 123, Avenue de LutÞce Ó Garenne, Colombes, Seine, France. March 7, 1934, No. 7269. Convention date, March 9, 1933. [Classes 80 (i) and 80 (iii)] [See also Group XXIX] Tanks are emptied rapidly by means of two interconnected valves 1, 2 and an air-intake 28, 29, the valves being simultaneously operated. In the form of device shown in Fig. 1 lift valves 1, 2 are moved off the seat 6 in the bottom of the tank by means of T-levers 8, 9 working on fixed shafts 10, 11. The valve 1 is raised by means of a rod 24 and the valve 2 is lowered by means of links 15, 16 against the pressure of springs 20, 21 which normally urge the two valves towards each other, i.e. on to the seat 6. Closing is effected by moving the T-levers in the opposite sense by means of a flexible device 30. At a certain point in the rise of the valve 1 a rod 26 is raised with it and the vent 29 is opened. In a modified construction the valve 2 has a vertical solid spindle and the valve 1 a hollow spindle surrounding the former. An intermediate sleeve is in opposite screw-threaded engagement with the spindles, the valves being opened simultaneously by rotating the sleeve. The valves may be flared outwardly at their edges and may have a vertical guide rod to prevent rotation. Relative longitudinal motion may also be given to the spindles by means of a cam, with spring return. In a further modification, Fig. 7, the valves 1, 2 are conical and perforated with a series of holes 83 as are also the two seats. The valves are opened by rotation of a pulley 42 by means of a cable 43. One valve is connected to a tube 38 and the other to a concentric tube 35 and the tubes are connected to the outer ends of a toggle 80, 81. A finger 87, Fig. 9<a>, projecting from the pulley forms the pivot of the toggle and when the pulley rotates, first approaches the toggle ends to lift the valves from their seats, and then rotates them to cause the holes in the valves to register with those in the seats.
Patent GB-540768-A (GB)
Title: Improvements in devices for controlling the automatic opening of pyrophoric lighters
IPC: F23Q2/40
Filed: 1940-04-23
Abstract: 540,768. Pyrophoric lighters. NATIONALE SOC. ANON., and DUNHILL, Ltd., A. April 23, 1940, No. 7294. Convention date, April 24, 1939. [Class 75 (iii)] In a pyrophoric lighter having a spring-opened cover and a manually operated friction wheel, the release of the cover is effected by the initial rotary movement of the friction wheel to effect ignition. The pivoted cover 2 carries a block 5 containing a wick cap and to which is pivoted an arm 11 carrying a pivoted pawl 9 held by a spring 18 in contact with teeth 8 formed on a finger wheel 6 to which is fixed the friction wheel 7. The arm 11 is freely mounted by a tubular part 12 passing through a bore in the block 5 and a pin 15 passing freely through the part 12 has fixed thereto an arm 13 terminating in a hook 14 urged by the spring 18 to engage a fixed hook 19 on the casing of the lighter to hold the cover closed. The part 12 is operatively engaged with the arm 13 by means of a cutaway part 22 of the part 12 and an arcuate overhanging part 23 on the arm 13 by means of a cutaway part 22 of the part 12 and an arcuate overhanging part 23 on the arm 13, lost motion being provided between the parts 22, 23. With the cover closed, rotation of the wheel 6 first actuates the pawl 9 to swing the arm 11 and thereby the arm 13 to release the hook 14 from the hook 19 to allow the cover to open; further movement of the wheel 6 effects the ignition.
Patent GB-646737-A (GB)
Title: Ice eliminating system, oil separator and pressure regulating device therefor
IPC: F22B37/26
Filed: 1948-03-10
Abstract: In a separator for removing oil from oil-laden air, the separator casing carries means to regulate the flow of air through the separator to maintain a predetermined pressure of air in the outlet passage.  In an embodiment, oil-laden air enters at 70 and, after passing a valve 41, flows through a passage 86 into the outer chamber of the separator where it is given a <PICT:0646737/III/1> centrifugal spin by means of radial vanes 91.  Oil drains from the casing through apertures 53.  The air now passes up through an apertured plate 64 and through a filter 65 of cellulose cotton which may be topped by a layer of activated carbon.  After passing an upper apertured plate 63, the filtered air passes to the outlet 12.  The flow of air through the separator is controlled by valve 41 which constitutes a shuttle valve serving to unload some of the air flowing in at 70 out through an exhaust conduit 31.  The pressure existing in outlet 12 is led through a conduit 120 to the underside of a diaphragm 123, the upper side of the diaphragm being subject to atmospheric pressure and to an adjustable loading spring 126.  Should the pressure rise in outlet 12, diaphragm 123 will be forced up and will open a needle valve 128 to allow suction from a conduit 108 to be applied through passages 132, 117, 105 to a diaphragm 102 connected to, and actuating, valve 41. A bleed 118 is provided between the underside of diaphragm 123 and passage 117.  When the separator is not working, a piston valve 116 is lowered and full suction is applied directly to the diaphragm through passage 106 so that valve 41 is forced to the right to prevent the flow of air to the separator.  Valve 116 is raised by energization of a solenoid 110.  The invention is shown applied to an ice eliminating system for aircraft as described in Specification 621,497, [Group XXXIII].  Specifications 621,464 and 621,490, [both in Group XXXIII], also are referred to.
Patent GB-849925-A (GB)
Title: Improvements relating to cathode ray tube supply circuits
Inventor: QUARMBY ERIC
IPC: H04N5/68
Filed: 1957-03-06
Abstract: 849,925. Cathode-ray tube operating circuits. METROPOLITAN-VICKERS ELECTRICAL CO. Ltd. March 3, 1958 [March 6, 1957], No. 7428/57. Class 40(7). In a cathode-ray tube (C.R.T.) E.H.T. circuit Fig. 2 one resistor chain includes high-gain triode Vl and brilliance control R and resistors R1, R2, R6-R9 are so proportioned that the C.R.T. grid-cathode voltage is independent of E.H.T. voltage variation. During time-base sweep brilliance pulses are applied via potentiometer R. A diode may be added to prevent the C.R.T. grid rising above cathode potential. In another embodiment Fig. 1, not shown, only two resistor chains are used.
Patent GB-755447-A (GB)
Title: Process for the production of polyesters from six-membered cyclic esters
Inventor: KLEINE HANS-HENNING
IPC: C08G63/08
Filed: 1954-03-15
Abstract: A six-membered cyclic ester is polymerized in presence of a catalyst which is a metal of the 2nd main or sub-group or the 4th group of the periodic system or an alcoholate, oxide, hydroxide or a weak acid salt of such a metal (e.g. a phosphate, carbonate, acetate or lactate).  Specified esters are lactide, glycolide, deltavalerolactone, trimethylene carbonate, ethylene oxalate and trimethyl-l-arabonic acid lactone.  Polymerization is effected at 130 DEG -200 DEG  C. by a batch or continuous process and may be effected in presence of a solvent, e.g. benzene or toluene, a chain-breaker, e.g. benzoic acid or water.  Polymerization may be effected on surfaces to be coated.  Pigments, plasticizers, solvents, &c., may be added to the polyesters.  In examples (1) and (3) glycolide is polymerized by heating in presence of metallic mercury or lead acetate.  Triphenyl phosphite may be added to the resultant polyester and further heating effected. (2), (4), (5), (6) Lactide is polymerized by heating in presence of zinc dust, zinc oxide, lead oxide or zinc carbonate and in Example (5) in presence of benzoic acid, (7) and (8).  A mixture of glycolide and lactide is polymerized by heating in presence of lead oxide.  (9) Lactide is polymerized by heating in presence of lead oxide and benzene.
Patent GB-540733-A (GB)
Title: Improvements in and relating to single acting high speed multi-cylinder pumps
IPC: F04B1/00
Filed: 1940-04-25
Abstract: 540,733. Single-acting multi-cylinder reciprocating pumps. MAGIS, A. A. G. April 25, 1940, No. 7469. Convention date, May 5, 1939. [Classes 8 (i) and 102 (i)] In a single-acting multi-cylinder reciprocating pump for liquids or gases, the cylinders 2 are disposed in one or more rows, each row having a single delivery chamber 10, and each cylinder is formed with inlet ports 8 which are opened by the piston 3 at the end of its suction stroke, and with a delivery valve 11 the external diameter of the seat of which is substantially equal to that of the cylinder and the piston clearance from which is eliminated or reduced to a minimum. The valve 11 is bevelled and engages a conical seat 12. In the form shown, the valves 11 are in the form of discs the relatively small lift of which is limited by abutments 13 on plugs 14. These valves constitute the end walls of the cylinders, they may be provided with guiding means, and they may be returned to their seats under their own weight or by means of springs. The size of the plugs 14 is sufficient to permit the insertion and removal of the valves 11 and the pistons 3. The ports 8 open into a cavity 7 which, in the case of an oil pump, is in communication with a closed crankcase. In a modification, each valve 11 is in the form of a narrow annulus.
Patent GB-975778-A (GB)
Title: Apparatus for spreading and guiding a fabric web
IPC: D06B3/36
Filed: 1963-02-25
Abstract: 975,778. Guiding webs transversely. SINGER CO. Feb. 25, 1963 [Feb. 28, 1962]; No. 7476/63. Heading B6B. [Also in Division G3] A web W is spread and guided laterally by passage over axially aligned rollers 21 and 22 which are rotated independently through electrically actuated clutch and brake mechanisms 35. The rollers 21 and 22 have small diameter rods 25 wound spirally in opposite directions which spreads the web outwardly. The clutch and brake mechanism which controls the rotation of each roller has a clutch unit 36 and a brake unit 37 which are controlled by an electronic control circuit, Fig. 3 (not shown), which includes brake and clutch coils 49, 50 alternately energized through relay contacts 59, 60. Electrically conductive feelers 38, 39 are arranged to engage opposite edges of the web and area each suspended by a wire 40 from a slidably mounted collar 41. The feelers 38, 39 are connected to wires 48 forming part of the control circuit. Normally, the web W is out of engagement with the feelers 38 and 39, such that both clutch coils 50, Fig. 3 (not shown), are energized and the rollers 21, 22 are rotated continuously to spread the web laterally. Lateral deviation of the web causes the web to engage one of the feelers which completes a circuit through the web to earth, the web being rendered conductive by dyeing solution through which it has passed. The clutch coil 50, Fig. 3 (not shown), of the corresponding roller is then de-energized and the brake coil 49 energized. The corresponding roller is therefore stopped and the web moved back to central position away from the engaged feller. To avoid hunting a relay 57, Fig. 3 (not shown), is energized through a time delay circuit, such that the clutch contacts 60 are not immediately closed so that the web has time to move back to central position.
Patent GB-589843-A (GB)
Title: Improvements in garden shears
IPC: A01G3/02
Filed: 1945-03-26
Abstract: 589,843. Hand shears. NASH & SONS., Ltd., I., and BOULTON, W. C. I. March 26, 1945, No. 7520. [Class 30] [Also in Group XXV] Garden shears are provided with a ball bearing between the pivot pin 12 and a blade 11 pivotally mounted thereon, and the blades are provided with longitudinal sweep or curvature at their extremities only.
Patent GB-787193-A (GB)
Title: Improvements relating to observation mirrors
Inventor: BODDY JOHN
IPC: B60R1/06
Filed: 1955-03-15
Abstract: 787,193. Clamps; hinges. TRICO-FOLBERTH, Ltd. March 15, 1956 [March 15, 1955], No. 7547/55. Classes 44 and 65(2) [Also in Groups XIV and XXXII] A bracket for supporting an observation mirror comprises a channel-section clamp embracing the free edge of a member of a vehicle and at least one wedge interposed between one wall of the clamp and one face of the member, the surfaces which engage the member being of rubber or like material. As shown, a clamp 6 embraces the free edge of a door 4 and is secured by wedges 8, 10 of opposite taper. The wedge. 10 is integral with a stem 12 carrying a mirror 2 and is drawn towards an end wall 16 by a screw 18 to compress a bent sheet of rubber 14 against the surfaces of the door. The mirror has an adjustable ball and socket connection 20 to an arm 22 which is pivoted on a stud 24 on the stem 12 and pressed by a spring 26 against a shoulder on the stem, radial ridges 30 co-operating with grooves in the arm to prevent rotation under normal conditions but allowing the arm to swing if knocked.