baber/WOPTO huggingface dataset:
Patent GB-1320644-A (GB)
Title: Electronic flash device for photography
IPC: G03B15/05
Filed: 1971-04-21
Abstract: 1320644 Electronic flash control WEST ELECTRIC CO Ltd 21 April 1971 [27 April 1970 (2) and 8 June 1970 (3)] 10404/71 Heading G2A An electronic flash device has a series circuit of a luminescent discharge tube 2 and a gate turn off element 3 connected across a main discharge capacitor 1, and a trigger circuit to simultaneously provide trigger pulse voltages to both the  discharge tube and the gate turn off element, a control capacitor 6 being discharged to impress a reverse cut-off voltage across the gate and cathode of the gate turn off element upon triggering of a semi-conductor element 8 by a luminescence detection circuit 9 receiving a predetermined quantity of light reflected by a foreground subject. The trigger circuit consists of a series circuit of a trigger capacitor 12, the primary coil of a transformer 13, a switch 11, a resistor 4 and a diode 5, the trigger pulse voltage to the gate turn off element being produced across the resistor and the trigger pulse voltage to the discharge tube being produced in the secondary coil of the transformer. Diode 5 is connected to block the discharging current from control capacitor 6 being by-passed through resistor 4 either during normal operation or as a result of the incidence of external light other than due to the luminescence of the discharge tube 2, the latter occurrence triggering thyristor 8 which would discharge capacitor 6 in the absence of diode 5. In modifications, a variable resistor is connected across control capacitor 6 to provide a suitable gate voltage to the gate turn off element, Fig.2 (not shown); the voltage on trigger capacitor 12 is controlled by a voltage divider connected via a diode to the junction between resistor 14 and the primary coil of the transformer 13, Fig.3 (not shown); a passive element such as a resistance or an inductance is connected in series with the discharge tube, adjustment of which varies the charging voltage of control capacitor 6, Fig.4 (not shown); a series circuit of a resistor and a capacitor is connected across the anode and cathode of the gate turn off element to allow a small glow discharge current to flow through the discharge tube and thus to ensure reliable discharge of the main discharge capacitor.
Patent GB-1158511-A (GB)
Title: Mechanical Mixers
Inventor: HUTCHINSON RICHARD LEWIS
IPC: B29C48/40
Filed: 1967-03-06
Abstract: 1,158,511. Screw mixers. FRANCIS SHAW & CO. (MANCHESTER) Ltd. 14 Feb., 1968 [6 March, 1967], No. 10424/67. Heading B1C. [Also in Division B5] A mixer or extender has a pair of intermeshing screws 9, 10, the screw 9 being mounted in a thrust bearing 21 at the end of the chamber 5 while the screw 10 is mounted in a thrust bearing 22 at the other end of the chamber. The screws are additionally journalled in bearings in the end wall of the chamber nearest the feed hopper 7. They may be rotated in the same or opposite senses by a prime mover 11 through bevel and worm gearing 12, 15 and 19, 20 and an epicyclic gear 13 which is adjustable manually at 16 or by power to vary the rates of rotation and hence the clearance between the screws. The apparatus discharges through a die head 6.
Patent GB-802316-A (GB)
Title: Improvements in or relating to inhibiting the growth of barnacles on marine structures
IPC: E02B3/12
Filed: 1957-03-29
Abstract: 802,316. Anti-fouling sheathing. DU PONT DE NEMOURS & CO., E. I. March 29, 1957 [April 30, 1956], No. 10431/57. Class 113. The underwater surface of a marine structure is clad with polytetrafluoroethylene in preformed impermeable sheet form.
Patent GB-184834-A (GB)
Title: Automatic load-controlled pressure-regulating valve for air brakes
IPC: B60T13/36
Filed: 1921-04-09
Abstract: 184,834. Bulbick, A. April 9, 1921. Fluid-pressure.-Relates to fluid-pressure-operated brakes of the type in which the braking effect is automatically or manually adjusted according to the load in the vehicle. According to the invention, equal changes of vehicle load produce equal changes in the leverage of levers connected with the pistons. or diaphragms of the fluid pressure control mechanism. In the apparatus described, air passes from the usual triple valve 4, Fig. 3, through a pipe 3, passage 2, Fig. 1, disc valve 9, outlet passage 5 and pipe 6, to the brake cylinder 7. Two pistons 20, 21 are provided, connected by a rocking-lever 26. A fulcrum roller 29 is moved automatically bv the levers and links 30 - - 35 shown, according to the loading of the vehicle 40. The head of the piston 21 is arranged so as to strike the stem 12 of the valve 9 when the former descends sufficiently. When the pressure in the passage 5 rises sufficiently, the piston 21 is forced up against the pressure exerted by the piston 20, thus allowing the valve 9 to close and so prevent a further rise of pressure in the passage 5 and brake cylinder 7. An increase of load in the vehicle 40 moves the roller 29 to the right, thus increasing the leverage of the piston 20 and so retarding the closing of the valve 9. This results in an increased pressure in the passage 5 and hence an increased pressure on the brake blocks. The application of the invention to vacuum brakes is also described. The roller 29 may be hand-operated. Shock-absorbing mechanism 41 is provided.
Patent GB-792422-A (GB)
Title: Improvements in or relating to the treatment of metals
IPC: B21C9/00
Filed: 1956-04-05
Abstract: 792,422. Rolling; drawing; stamping. DIAMOND ALKALI CO. April 5, 1956 [April 8, 1955], No. 10480/56. Drawings to Specification. Class 83 (4). In a method of forming a lubricant soap-like coating on metal for drawing, rolling, stamping, &c. in which the metal is successively contacted with molten alkali metal hydroxide and a fatty acid, the coating is heat-treated to remove any unreacted fatty substance and to provide a more uniform surface which is difficult to remove by abrasion. The subject-matter is substantially as described in Specification 792,421, but the coated wires are subsequently passed through furnaces at temperatures from 1000-2000‹ F. at rates of from 10-20 feet per minute to bake the coating without substantially heating the metal.
Patent GB-1479442-A (GB)
Title: Tyre deflation warning device
IPC: B60C5/00
Filed: 1974-06-13
Abstract: 1479442 Tyre deflation warning means M V HINDERKS 13 June 1974 10611/77 Divided out of 1479441 Heading B7C The subject matter of this Specification is substantially the same as that described in the Parent Specification but the claims are concerned with means comprising a compressible material provided with a plurality of air pockets having discharge apertures communicating with the space between an inner tube and a tyre carcass, which space in use is normally inflated, the ingress and egress of air from the pockets producing an audible signal when the space is deflated.
Patent GB-527265-A (GB)
Title: Improvements in or relating to furnace walls
IPC: F23M5/08
Filed: 1939-04-05
Abstract: 527,265. Furnace walls. IVOR POWER SPECIALITY CO., Ltd., and GREEN S. R. April 5, 1939, No. 10650. [Class 51 (i)] In boiler furnaces where both faces of internal partition walls are subject to heat, the walls are cooled by tubes a, Fig 2, through which air is circulated. The bricks d are recessed at e as shown in Figs. 3, 4 and 6 to receive one or more pipes a. The side faces of the bricks may be grooved at f to receive asbestos rope or fireclay. In a modification the faces of the bricks are corrugated.
Patent GB-417035-A (GB)
Title: Cold accumulator
IPC: F25D17/02
Filed: 1934-04-09
Abstract: 417,035. Cold accumulators. SOC. ANON. POUR L'EXPLOITATION DES PROCEDES M. LEBLANC-VICKERS, 12, Rue Portalis, Paris. April 9, 1934, No. 10670. Convention date, April 10, 1933. [Class 29.] A cold accumulator comprises a tank 1 for water or other liquid, and a vacuum snowproducing apparatus 7, liquid being supplied from the tank to the evaporator by a pipe 9 and a mixture of snow and liquid being restored to the tank by a feed pipe 10 to constitute a reserve of cold. The warm liquid from a heat exchanger 3, employing the refrigerating liquid, is returned by a pipe 5 to the cold accumulator and falls as rain over the snow which is retained in a screen 12. Warm liquid from the consumer 3 may be byepassed into the evaporator at 16 or 16<1> to produce jets in the snow-liquid mixture and prevent snow deposits on the evaporator walls or in the nozzle 17 respectively. The production of snow may be effected in a multi-stage evaporating machine in cascade.
Patent GB-106812-A (GB)
IPC: F23D11/10
Abstract: 106,812. Brookes, N. E., (Good Inventions Co.) May 30, 1916. Drawings to Specification. Lighting burners by electric devices.-An enclosed. device for the continuous and complete combustion of liquid fuel is provided with electricspark igniting-means supplied with current from a magneto-generator connected to the blower which supplies air for combustion and for spraying the fuel. The spark electrodes are bent convergently downwards so that drops of liquid collecting thereon are blown away from the spark gap by the air current.
Patent GB-215367-A (GB)
Title: Improvements in receiving devices for cutting machines of the rotary type for paper or pasteboard, and like machines
IPC: B65H29/04
Filed: 1924-04-30
Abstract: 215,367. Soc. Anon. Marinoni Machines et MatÚriel pour l'Imprimerie et les Industries Annexes, (Assignees of Bobst et Fils, Soc. Anon., J.). May 1,1923, [Convention date]. Delivery apparatus; gripper mechanism. - Delivery apparatus for papercutting &c. machines comprising one or more sets of grippers mounted on supports carried bv endless travelling chains, one of which supports or shafts is operated for opening and closing the grippers, comprises also tappetsarranged in such manner as to detach the sheets from the grippers without at the same time opening them. The paper &c. is severed into sheets by rotary cutters 5, 6 and the sheets delivered to a receiver 65 by grippers on pairs of shafts 19, 20 extending between a pair of endless chains 14 passing round pairs of sprocket wheels 12, 16 on shafts 36, 18. Each shaft 19 is revoluble and keyed at 41 to the pivoted grippers 40, Fig. 5, which are disposed in slots in the gripper-body portion 21, the latter being ,adjustable along the shaft 20 and secured by means of set screws 38 engaging a groove 37. The shaft 19 carrier at the end a fork 31, Fig. 4, adapted to engage a fixed stop 52, by which the fork is swung over and the grippers 40 opened in readiness to receive a sheet. A second fixed step 54 the fork 31 when the grippers are in sheet-receiving position and closes them, the edge of the sheet being held between the grippers 40 and springs 49 secured to the body portions 21. The other ends 48<1> of the springs 49 are adapted to engage small rollers 47 on the grippers 40 to maintain them in closed position and also to engage notches 51 to maintain them in open position. External guides 58, 59, 60, 61 and' internal guides 56, 57 coact with rollers on the ends of the shafts 19, 20 to steady the grippers whilst they are being opened and closed. The sheets are carried by the grippers against uprights or tappets 66 adjustably fixed along a guide 67 at the back of the receiver 65 so as to be spaced between the grippers. whereby the sheets are disengaged and deposited on the pile. Weighted bands 70 support the sheets between the guide bar 64 and the receiver 65.
Patent GB-504418-A (GB)
Title: Improvements in portable sound reproduction equipment
IPC: H04R1/02
Filed: 1938-04-07
Abstract: 504,418. Sound-reproducing apparatus; gramophones. FABBRICA ITALIANA MAGNETI MARELLI. April 7, 1938, No. 10724. Convention date, April 9, 1937, [Class 40 (iv)] [Also in Group XXXVIII] A portable sound-reproduction equipment comprises casings A, B independent of a suit-case C, which include a loud-speaker and valve amplifier and are so shaped that one of the casings forms a cavity for the accommodation of members projecting from the other casing when the casings are placed in the case C. Both casings are formed with compartments for housing accessories. The casing A including the loud-speaker 2 is constituted by a box 1 provided with hinged shutters 7 forming a space for a turntable 15 and gramophone records and formed with a recess for enclosing a gramophone pick-up 10 mounted on the upper surface of the casing B containing the amplifier. The box 1 has compartments 4, preferably provided with shutters 5, which form storage spaces for equipment, such as a microphone, and which communicate with the space at the rear of the loud-speaker 2 through holes 6. The casing B enclosing the amplifier is formed with a compartment 17 for housing additional accessory equipment, and the pick-up 10 is held clear of the top surface of the casing during transport by means of a pin 14 which engages in an inclined slot 13 formed in a 'bracket 12 fixed to the top surface of the casing B.
Patent GB-232419-A (GB)
Title: Improvements in or relating to brooders, hovers and like apparatus
IPC: A01K31/18
Filed: 1924-05-05
Abstract: 232,419. Dixon, R. A. May 5, 1924. Rearing-appliances.-A brooder for chicks, &c. has a floor 5 of perforated or slotted material supported on a frame 2 provided with ventilating- apertures 3. The floor may be of perforated zinc, wire gauze, slats, &c., and transverse supports 4 may be arranged beneath it. A hover or brooder of the usual type is mounted above the floor and its sides 6 may be hinged at the bottom and provided with slats 8 to give a foothold when the side is opened'.
Patent GB-922125-A (GB)
Title: Improvements in or relating to electrical control circuits
Inventor: BARDELL BERTIE LOUIS
IPC: G05B19/04
Filed: 1960-03-29
Abstract: 922,125. Switching systems. M.T.E. CONTROL GEAR Ltd. Feb. 15, 1961 [March 29, 1960], No. 11028/60. Class 38 (4). A multi-position electrical switch such as a uniselector, has its contacts by-passed during each movement to relieve the contacts of current-making and breaking. A circuit, due to, say, a limit switch closing, to contact 25 of uniselector level CB energizes a fast-make, slow-break relay R1, hence closing contacts R1/1, causing the driving magnet DM to move the selector arms to position 1, thus connecting in circuit a contactor coil C1. This coil is however not energized until relay R1 releases, returning make-before-break contacts R1/2 to the position shown. Another feed to position 1 of level CB moves the selector arms to position 2, but the coil C1 is maintained energized through contacts R1/1 and self-holding contacts C1/1 during movement of the arms. Other contactor coils C2 and interlocking contacts C1/2, C2/1 may be provided in the circuit. A mounting and plug-and-socket arrangement for the switch is described in the Specification.
Patent GB-280102-A (GB)
Title: Automatic braking air admission valve for automobile engines
IPC: F01L13/00
Filed: 1927-04-25
Abstract: 280,102. Huffam, G. S. C., and Bergin, E. J. April 25, 1927. Valves controlled by pilot or relay valves.-Air for braking is admitted to the induction manifold of an engine for a vehicle through a nipple 10 controlled by a valve 11 carried by a spring- loaded suction-actuated piston 15, the suction being transmitted to the upper side of the piston through a passage 16 when the armature 21 of a solenoid 19 is lifted. The solenoid is in circuit with an electric generator driven from the engine. The valve is therefore opened only when the current is sufficient to energize the solenoid and the suction in the manifold is sufficient to lift the piston against the action of the loading-spring 17. The circuit of the solenoid may be provided with a switch.
Patent GB-436536-A (GB)
Title: Improvements in or relating to the concentration of latices
IPC: C08C1/12
Filed: 1934-04-12
Abstract: In the concentration of latex in a vacuum flask vaporizer, such as is described in Specifications 382,235 and 393,732, coagulation is prevented by the addition of ammonia during the concentration.  The addition of ammonia is preferably made at the commencement of the concentration, but it may be deferred until the solid content reached 50-55 per cent.  Part of the ammonia may be replaced by other stabilizers such as potassium hydroxide or soaps; these may also be added to the final concentrate which may reach 75 per cent of solids. According to an example, 2,500 litres of latex containing 38 per cent solids and 0,6 per cent ammonia is heated to 65 DEG  C., and passed into a flashing chamber in which the pressure is 52 mm.  The process is repeated for 5 hours during which time the temperature to which the latex is raised is reduced to 45 DEG  C., and the pressure in the chamber to 57 mm. After about two hours treatment, a 25 per cent solution of ammonia is admitted to the pipe leading to the circulation pump from the vacuum chamber, at the rate of 3 litres per hour.  At the conclusion of the concentration, 200 milli equivalents of ammonia are added.
Patent GB-757428-A (GB)
Title: Radio frequency amplifier
IPC: H03F3/54
Filed: 1954-04-15
Abstract: 757,428. Coaxial resonators. STANDARD TELEPHONES & CABLES, Ltd. April 16, 1954 [April 21, 1953], No. 11152/54., Class 40 (8). [Also in Group XL (c)] The anode resonator of a valve amplifier comprises an earthed plate 43, a cylindrical wall 25 and four radially arranged bars 24a coupled through dielectric material 26 and 31 to an outer cylinder 25 and to a cylinder 32 in contact with the anode. The bars which with the ground plate and outer wall constitute short lengths of shorted transmission line are supported on rings 27 and 29 which are slotted to accommodate more or less bars as required to resonate the anode capacitance. Fine tuning is effected by rotating one of the bars about a screw 34 (Fig. 7, not shown) or by supporting one bar 24c (Fig. 5) on two conductive pillars 88 so that the effective length of the bar may be varied by sliding it up or down the pillars. The output is derived from a loop 22 (Fig. 4) located adjacent to one of the bars. The input to the amplifier is fed through a quarter-wave coaxial matching section (Figs. 1 and 2, not shown).
Patent GB-636307-A (GB)
Title: Improvements in and relating to laminated driving belts
IPC: F16G5/16
Filed: 1948-04-23
Abstract: 636,307. Driving belts. GANDY, V. L. April 23, 1948, No. 11166. [Class 80 (i)] A driving belt is formed of laminations 6, through a hole 10 in each of which is secured a stud 5. A stud hole 7 communicates with a rectangular slot 9 by means of a slit 8 which extends beyond the slot towards the stud 5. When the belt is assembled, each lamination has associated with it three studs 5 ; the first is secured in the hole 10, a second is slidable in the slot 9, and a third is held in the hole 7, into which it has been "buttoned" by way of the slot 9 and slit 8. The arrangement allows relative sliding between adjacent laminations.
Patent GB-1421007-A (GB)
Title: Shut-off valves
IPC: F16K3/24
Filed: 1973-03-07
Abstract: 1421007 Valves KLINGER AG 7 March 1973 [8 March 1972] 11194/73 Heading F2V The closure member of a shut-off valve comprises two parts 71 and 7<SP>11</SP> which are clamped together by screws 20 and retain between them a sealing ring 11 and an annular spring 13 which adopts the position shown in dashed lines (Fig. 2) when the valve is open and the position shown in full line when the valve is fully closed such that the sealing is held against the part 7<SP>1</SP> of the closure member by an axial force for all positions of the valve. The spring is of nitrided austenitic steel and the part 7<SP>11</SP> is chromium plated.
Patent GB-372523-A (GB)
Title: Improvements in or relating to road vehicle brake testers
IPC: G01L5/28
Filed: 1931-04-16
Abstract: 372,523. Testing road vehicle brakes. POWELL, A. D., 31, Clare Road, and BRADBURY & SONS, Ltd., J., New Street Works, both in Braintree, Essex. April 16, 1931, No. 11240. [Class 106 (ii).] Relates to apparatus of the type in which the wheels of the vehicle to be tested are driven by rollers, and consist in the provision of means for indicating at a distant point the torques applied to overcome the brakes so that the resistances on all brakes may be observed simultaneously. The wheel A rests on rollers B, one of which is driven from a motor C through epicyclic gearing D. One member of the epicyclic gear D moves to balance the torque and this movement is transmitted through a linkage E<1> to a pendulum F. An arm G attached to the latter is adapted to move over a resistance H and thus vary the resistance in circuit with an amperemeter J. In another form the arm G is hinged to the rod of a piston operating in a cylinder containing coloured liquid which is connected by a pipe line to a transparent tube the liquid in which is thus varied. In a third form a rope is led around pulleys to move an indicator rod. All indicators are mounted at a point easily visible to a person sitting in the driver's seat of the vehicle.
Patent GB-870124-A (GB)
Title: Improvements in dough roll kneading machines
IPC: B29B7/52
Filed: 1960-03-30
Abstract: 870,124. Kneading dough. FAHR, O. March 30, 1960 [June 13, 1959], No. 11294/60. Class 87(2). In a dough kneading machine, pieces of dough are kneaded on the cells 2 of a rotating drum 1 by the action of an inner drum 3 and are then successively discharged into longitudinal grooves 6 in a belt 4 formed by spaced gaps between a roller 7 and the belt which partly envelops the drum 1 and which discharges the pieces of dough over the return roller 7. As shown in Fig. 1, the dough, fed on to the upper part of the drum 1 is kneaded by the action of the inner drum 3 which rotates faster than, and oscillates within the outer drum 1. The grooves 6 are formed by the tensioned belt bearing on the grooved roller 7. In a modification the grooved pulley is replaced by a plain pulley and the belt is provided with spaced longitudinal ribs on its underside so that grooves are formed in the parts of belt which lie between these strips when the belt is tensioned.
Patent GB-1158664-A (GB)
Title: An improved Roof Closure Structure for Hollow Containers
Inventor: HAMILTON WILLIAM
IPC: F17C3/00
Filed: 1967-03-10
Abstract: 1,158,664. Liquefied gas storage reservoirs. W. HAMILTON. 29 Feb., 1968 [10 March, 1967], No. 11366/67. Heading F4P. The periphery 23, Fig. 2, of a domed sheet metal roof 5, Fig. 1, of a ground reservoir for storing liquefied natural gas is supported on a concrete ring 4 resting on the ground around the reservoir mouth and is sealingly secured to said ring 4 by being bolted to a continuous cone-shaped plate 22 welded to the upper rim of a continuous impervious metal plate 19 embedded in the ring 4 which is itself sealed by a frozen sand-filled trench 41, Fig. 3, surrounding the concrete ring 4. The domed roof 5 of aluminium alloy is tensioned by steel bolts 26 embedded in the ring 4 and is freely supported on a lattice assembly of hollow rectangular sectioned aluminium beams 6 spanning the reservoir mouth and connected at spaced points at its periphery by tie-bolts 11 and threaded sleeves 14 pivoted at 15 to vertical plates 16 rigidly secured to the inner marginal edge of ring 4. The inner wall of the trench 41 is lined with a steel band 37 bolted to and surrounding the concrete ring 4 and the outer wall is lined with an aluminium band 42 which extends above ground level to contain water. The ring 4 nests on a layer of sand 2 and heat insulation material 3, and the roof lattice is lined internally by layers of heat insulation material 36 through which gas may run freely thus avoiding a gas pressure differential between the upper and lower sides of said layers.