baber/WOPTO huggingface dataset:
Patent GB-433545-A (GB)
Title: Improvements in and relating to automatic stabilisation for electrical circuit arrangements using a gas discharge tube as an intervalve coupling
IPC: H03F1/54
Filed: 1934-02-16
Abstract: 433,545. Valve amplifying circuits. BEVAN, R. H. L., SMITH, H., and HILL, E. G., H.M. Signal School, Royal Naval Barracks, Portsmouth. Feb. 16, 1934, No. 5135. [Class 40, (v)] A thermionic amplifier of the type employing a gas discharge tube as an intervalve coupling is stabilized by causing the anode current of the output valve to control the grid bias of the input valve in such manner that any change in the anode current of the output stage (other than that due to the signal) is counteracted ; a time delay makes the control action slower than that of changes in signal voltage. In the arrangement shown, variations in anode current of the last valve produce grid bias variations in the first stage, obtained from a resistance shunt across the output valve, through a biassing battery B and delay circuit R, C. The upper portion of the potentiometer P may be a gas discharge tube. Where the amplifier comprises an even number of stages, P is connected between the cathode of the last valve (which is of the indirectly heated type) and earth, Fig. 1 (not shown). The invention is particularly applicable to Morse frequency impulse amplifiers. Specification 369,578 is referred to.
Patent GB-234882-A (GB)
Title: Improvements in or relating to apparatus for television
IPC: H04N5/228
Filed: 1924-02-28
Abstract: 234,882. Blake, G. J., and Spooner, H. J. Feb. 28, 1924. Television apparatus. - The transmitting arrangements for a wireless television system comprise in combination means for producing an electric discharge and focusing it on an anode screen 15, Fig. 1, of selenium or like light-sensitive material, thus producing in an external circuit a discharge current varying in accordance with the intensity of light incident on the screen, means for causing the discharge to be incident successively on all parts of the screen, means for transmitting wirelessly energy varying in accordance with the variations of the discharge current, and means for transmitting wirelessly energy causing an electric discharge to be incident synchronously and in a similar manner on a reproducing screen 43, Fig. 2, at the receiving station. The anode 15 is connected through a very high resistance 16 to the positive pole of a battery 17 of which the negative pole is connected to the cathode 11, and the ends of the resistance 16 are connected through an amplifier 18 and a modulator 19 to a continuous wave wireless transmitter 1. The focused discharge is caused to be incident successively on all parts of the anode by alternating currents in pairs of field coils 5, 6 and 9, 10, the coils 5, 6 being connected in series through a high frequency transformer or like coupling 4 to a continuous wave wireless transmitter 3, and the coils 9, 10 being similarly connected through a coupling 8 to a similar transmitter 2. Fig. 2 shows the receiving arrangements which include the use of a cathode ray tube 31 in the manner described in Specifications 27570/07 and 5486/11, [Class 40 (iii), Telegraphs, Electric]. The intensity of the discharge in this tube is controlled by a grid 38 connected through a detector or demodulator 44, associated with a wireless receiving apparatus 25, to a potentiometer 40 in the circuit of a battery 39. The focused discharge is caused to traverse the screen 43, synchronously with the similar traversing of the screen 15 by the discharge at the transmitting station, by pairs of electrodes 29, 30 and 33, 34 connected respectively through couplings 28 and 32 to wireless receiving apparatus 27 and 26.
Patent GB-1142990-A (GB)
Title: Polytetrafluoroethylene sinterings
Inventor: ZULIANI GIUSEPPE
IPC: B29B13/00
Filed: 1968-02-02
Abstract: 1,142,990. Sinterings comprising P.T.F.E. and titanium. MONTECATINI EDISON S.p.A. 2 Feb., 1968 [7 Feb., 1967], No. 5333/68. Heading B5A. [Also in Division C3] Sinterings are prepared by preliminary mixing of a mixture comprising polytetrafluoroethylene powder loaded with titanium micropowder, preforming of the mixture in a compression mould at from 4000 to 6000 kg. per sq. cm., sintering of the compacted mixture by slow heating to between 300‹ C. and 450‹ C. for from 1 to 3 hours, and gradual cooling of the sintering.
Patent GB-372447-A (GB)
Title: Improvements in or relating to electric switches for use with electric systems of motor vehicles
IPC: C10L1/00
Filed: 1931-02-25
Abstract: 372,447. Latching switches. BOSCH AKT.-GES., R., 4, Militarstrasse, Stuttgart, Germany. Feb. 25, 1931, No. 5858. Convention date, Feb. 26, 1930. [Class 38 (v).] In a switching arrangement for use in motor vehicles two concentric switching members such as for controlling the lighting and ignition circuits are automatically locked on the withdrawal of a key which, after insertion and partial rotation is automatically coupled to the inner switch member so that on further rotation the circuits controlled by the inner member may be made and broken. As shown in Figs. 1 and 2 the outer annular switching plate 12 for controlling the lighting circuits is adapted to be operated by a handle 13 and the inner switch member 11 for the ignition and horn circuits is secured to a rotatable insulating cylinder 4. In a recess formed in the upper end of the cylinder 4 are secured two keyhole members 6, 7, Figs. 3 and 4, with slots 8, 9 as shown. On insertion of a key 5, Fig. 5, the wards 1c of the key pass downwardly through the slots 8, the lower end of the key depressing a spring-controlled locking bolt 14 having an arm 15 fitted with a guided pin 16 normally engaging semicircular recesses in the adjacent faces of the rotatable switching members. Thus both members are freed for operation and if the key is now rotated through 90‹ the wards 10 slip upwardly into the recesses 9 of the lower disc 7 which are meshed by the upper disc so automatically coupling the ignition &c. switching member to the key. Further rotation of the key causes the movement of the inner switching member. The angle of rotation of the switching members is limited by fixed pins 21 in peripheral slots of the members 11, 12 and each of the contact positions has a locking recess 18, 19 opposite the pin 6 so that both switching members are automatically locked on withdrawal of the key. The fixed switch contacts 22 bear on the lower faces of the switching members 11, 12 and are carried by springy arms attached to terminals spaced around the insulating base 1.
Patent GB-475727-A (GB)
Title: Improvements relating to the distillation of coal, and for the consolidation of other materials by the application of heat
IPC: C10B7/00
Filed: 1936-02-22
Abstract: 475,727. Coking or heat-treatment of solid materials. DAVIDSON, T. M. Feb. 22, 1936, Nos. 5413/36, 19238/36, and 5236 /37. [Classes 51 (ii), 55 (i), and 55 (ii)] [Also in Group XIII] In the coking of coal or shale or the heating of finely divided solid material, the charge is fed from a hopper j<3> by a push plate conveyer in casing j<4>, feed shoot j<5> and feed box j<6> to channels c formed between flanges k secured to a rotary casing a, the charge being compressed into the channels by a roller or rollers o. Undercut recesses k<5> in the casing, and recesses or circular holes k<2> in the flanges retain the material in place during the downward movement from the charging position. A vertically movable plate l is supported by links l<1> from brackets l<2> on the feed box, and has attached to it scrapers m<3> and inwardly directed members m<1> which contact with the surface of the casing a, and enter the channels c and scrape off the coke which is removed by a screw conveyer i in a channel i<1>. A gauge plate n is supported by brackets n<1> from the plate l and is coextensive with the latter, whereby the depth of the layer may be adjusted. The roller o which may be grooved and arranged in sections on units is confined in position by stop plates p. Distillates are withdrawn through outlets b<5>. The ends of the casing a are lined with firebrick at a<2>, and carry bearing rings a<1> supported on rollers, and the casing is slowly rotated by gearing h. The setting b has a central chamber containing the rotary casing and lateral heating flues d. Hot gases from a furnace e pass through a mixing chamber e<1>, and vertical flues, into the lateral flues d, and end flue d<1>, returning through the casing a, their circulation being assisted by a fan f. Part of the heating gases passes through flues d<4> and d<5> for recirculation, and part passes down a lateral flue d<6> and rearwardly through an air heating recuperator to the chimney d<9>. A blend of 25 to 75 per cent Durham coking coal and 75 to 25 per cent anthracite is suitable, or pitch may be used instead of a coking coal. The carbonization takes place during one revolution of the casing in about one or two hours, and the wall of the casing is maintained at from 500 to 700‹ C. The second Provisional Specification refers also to a sintering process, and to grooving the walls of the channels, the upper parts of these walls being caused to overhang. The third Provisional Specification refers also to the drying of clay in a plastic condition in which case the wall of the casing is maintained at 150 to 450‹ C.
Patent GB-225101-A (GB)
Title: An improved process for the production of rice-starch
IPC: C08B30/04
Filed: 1924-03-04
Abstract: Rice is finely ground, without any preparation, with a predetermined quantity of water in a mill, and the product is treated centrifugally in known manner to separate starch, which is treated with water and further purified by decantation.  The purified starch may be again centrifuged, treated with water, and decanted.  An example of the process is given.
Patent GB-525234-A (GB)
Title: New or improved book-stand and rest
IPC: A47B19/04
Filed: 1939-02-20
Abstract: 525,234. Book stands &c. WALKER, Ltd., A. E., and WILLIAMSON, N. Feb. 20, 1939, No. 5596. [Class 52 (i)] A stand and sloping rest for books of reference such as directories comprises a rigid frame with back 1, 'base 2, and triangular sides 3, and a movable book support 10 adapted to occupy an upright position against the back as shown in Fig. 2 when the books are out of use and an inclined position when a book is opened with its sides resting against the edges of the triangular side frames, as shown in Fig. 5. The support 10 has upper and lower ledge fittings 11 formed with tubular sockets 13 for .cross-rods 12, the ends of these rods projecting into guide tracks along the back and base so that the support may be moved to the sloping position by pulling on a cord 21 until its lower edge abuts a rubber buffer 7 at the front of the base frame, and be restored to the upright position by pushing it in at the front. Rollers 15 are mounted on the rods 12 at cut away parts of the sockets 13, to facilitate movement. The books may be secured in place by springs 16 hooked to the lower ledge 11 and having knobs 18 at their upper ends to engage them in notches 19 of the upper ledge.
Patent GB-804570-A (GB)
Title: Improvements in cyclone furnaces
IPC: F23C3/00
Filed: 1957-02-19
Abstract: 804,570. Cyclone furnaces. BABCOCK & WILCOX Ltd. Feb. 19, 1957 [Feb. 20, 1956], No. 5597/57. Class 51 (1). Airborne pulverulent fuel entering the combustion chamber of a cyclone furnace through longitudinally arranged nozzles 4 is deflected towards the chamber axis by deflectors 8, each of which forms an integral part of an extensionpiece 7 which is fitted to the partition wall 6 located between a row of secondary air nozzles 5 and the nozzles 4. Each piece 7 is replaceable and may have side walls 9 which form extensions of the side walls of the associated nozzles 4. Each deflector 8 may be straight, as shown, or curved cylindrically. In a modification, the deflector 8 is curved but the roof of the piece 7 is removed so that secondary air can pass through to assist the action of the deflector.
Patent GB-450026-A (GB)
Title: Improvements in or relating to combined electric switches and plug couplings
IPC: H01R13/703
Filed: 1935-02-22
Abstract: 450,026. Plug couplings. WANDSWORTH ELECTRICAL MANUFACTURING CO., Ltd., Imperial Works, Kenyon Street, and BATCHELOR, T., 67, The Avenue, Acocks Green, both in Birmingham. Feb. 22, 1935, No. 5677. [Class 38 (i)] In a switch socket, a spring-loaded lever or catch which, prior to the insertion of the plug coupling, is disposed in the path of a manually operated switch member which is also spring operated in the switching - off direction, is arranged to extend into one of the socket tubes and to be angularly displaced out of the path of the switch member by the insertion of the plug. The moving contacts a<1> are mounted on a sliding switch member a oporable in both directions by means of a finger piece ,f when the pins b<1>, b<2> of a plug are normally engaged with the sockets c<1>, c<2> and also adapted to be moved to the off position by a spring a<2> when the pins are withdrawn. The switch member, when thrown to the off position by withdrawal of the plugs, is automatically engaged by a spring-loaded trip-catch d, which engages a stop e<5>, and is held in the off position. A shoulder d<1> of the catch projects into the socket c<1>, and, upon reinsertion of the plug pins, it is tripped outwards so that it does not engage the stop e<5>, and the switch member can be opened and closed as long as the plug remains properly in position. A ball catch is mounted on the switch member, and is adapted to extend through a slot in the socket c<1> and frictionally engage the pin to hold the switch in the on position. The strength of the loading spring is sufficient to overcome that of the circuit-breaking spring a<2>. In a modification, the moving contact member is of the oscillatory type and may be connected to the spring-loaded switching slide by links. The handle f may be pivoted and adapted to transmit movement by links. The moving may be of the oscillatory type and connected to the switching slide by links. When a mercury switch is used the mercury container may be pivoted.
Patent GB-415437-A (GB)
Title: Improvements in or relating to pressure reducing valves
IPC: G05D16/06
Filed: 1933-02-24
Abstract: 415,437. Pressure-regulating valves. COLLISON, W. E., 87, Eccleston Square, Buckingham Palace Road, London. Feb. 24, 1933, No. 5686. [Class 135.] A pressure - reducing valve particularly applicable for use with vapour inhaling apparatus is fitted with a hinged valve member provided with an adjustably mounted valve facing. The valve facing, preferably of ebonite is forced more or less through a coned or burred aperture D formed in a socket on the valve member by a screw E engaging a screwed part of the same socket. The screwed part may be slit to prevent the screw working loose. An extension of the valve member acted on by a spring C has a projection B<2> bearing against a lever 0 actuated by a diaphragm N. The diaphragm is loaded by a spring M bearing against an adjustable abutment L internally screwed to receive an adjusting screw K rotatably mounted in the casing.
Patent GB-662066-A (GB)
Title: Improvements in or relating to safety-locking devices for machine guards
IPC: F16P3/08
Filed: 1949-03-02
Abstract: 662,066. Machinery guards. POWELL, G. F. W., and MOLINS MACHINE CO., Ltd. March 2, 1950 [March 2, 1949], No. 5746/49. Class 80 (iv). A guard 1 hinged at 2 to a machine frame 8 is held closed by a screw clamp co-operating with a micro-switch 10 in the circuit of the driving motor of the machine so that there is a time lag between the breaking of the motor circuit and the complete release of the clamp. The invention is applied to a continuous rod cigarette machine. The clamp comprises a rod 4 mounted in a bracket 3 attached to the guard 1, the rod being urged upwards by a spring 12 and having at its lower end a screw 6 rotatably arranged in a bush 7 secured to the frame 8. Below the screw 6 the rod 4 extends as a stub 9 contacting the micro-switch 10. A spring-loaded pawl 15 coacts with the buttress thread of the screw 6 so that the clamp may be pressed home when Closing the guard but must be unscrewed' when opening. Initial rotation of the knob 5 of the clamp opens the switch 10, and the thread of the screw is such that by the time unscrewing is completed the machine parts have come to rest. It is stated that the screw itself may comprise one of the contacts of a switch replacing the microswitch 10.
Patent GB-663663-A (GB)
Title: Improvements in or relating to electric devices for igniting fluid fuel
IPC: F23Q7/22
Filed: 1949-03-02
Abstract: 663,663. Lighting burners. ROBERTSHAW-FULTON CONTROLS CO. March 2, 1949, No. 5762/49. Class 75(iii) An electric ignition device for igniting fluid fuel comprises a housing 10, Fig. 5, having an open-ended chamber 16 containing a resistance wire 28 having an igniter portion 26 comprising a single pair of oppositely opposed turns having legs 32, 30, 34, Fig. 7, extending in substantially the same plane normal to the axis of the chamber 16. The side legs 32, 34 are offset forwardly and rearwardly respectively of the centre leg 30, or alternatively, both legs 32, 34 are inclined slightly rearwardly of the leg 30. The wire may be of .platinum-iridium alloy, e.g., 80 per cent platinum, 20 per cent iridium, thus having a catalytic action.
Patent GB-731395-A (GB)
Title: Copying arrangement for machine tools especially lathes, grinding machines and milling machines
IPC: B23Q35/26
Filed: 1951-01-26
Abstract: 731,395. Copy-grinding. VERWALTUNGS. GES. DER WERKZEUGMASCHINENFABRIK OERLIKON. Jan. 26, 1951 [Feb. 2, 1950], No. 5769/53. Divided out of 731,346. Class 60. [Also in Group XXII] A copying device for machine tools comprises two guide edges 11a, 11b, 11c and 12a, 12b, 12c, a feeler support movable longitudinally of, and transversely to, the edges, and a control device 6, 12d, for moving the feeler 3 from one edge to the other as the support is reversed for a return stroke, following a working stroke in which two tools 13, 14 having opposed feeding directions are controlled by the feeler, and wherein the control device also imparts a further changeover movement of the feeler from one edge to the other at an intermediate point in each stroke so that, on the return stroke, the feeler moves between those parts 11a, 12c of the guide edges which are sensed in a working stroke. The grinding-machine may be hydraulically controlled and is as described in Specification 731,346.
Patent GB-860465-A (GB)
Title: Improvements relating to valves
IPC: F16K1/42
Filed: 1957-02-20
Abstract: 860,465. Valves. GUTEHOFFNUNGSHUTTE STERKRADE A.G. Feb. 20, 1957 [Feb. 20, 1956], No. 5804/57. Class 135. A valve closure member 2 having a stem 1 extensible, e.g. by temperature or by pressure acting on the member, for actuating the valve, and anchored at its end opposite its head to the valve housing, has the seating rim 5 of the valve head formed as an annular body generated by rotation of a curve and making line contact within a conical seating bore 3. The valve relieves pressure in an hydraulic strut and as shown the curve is a semi-circle.
Patent GB-472799-A (GB)
Title: Improvements in belt driven reversing gear
IPC: F16H7/02
Filed: 1937-02-26
Abstract: 472,799. Reversing-gearing. LUTTENAUER, C. Feb. 26, 1937, No. 5865. Convention date, Feb. 26, 1936. [Class 80 (ii)] Between forward and reverse pulleys A, R is a loose flywheel-pulley 2, constantly driven in the same direction by an overlapping edge of the single belt 4, and assisting in the reversing operation by delivering its kinetic energy in accelerating the pulley to be driven, and also having conical friction surfaces 3, which, as the flywheel moves axially under the lateral thrust of the belt during a reversal, effect a preliminary braking of the pulley to be driven. As shown, the pulleys A, R drive a common gear-wheel 6 in opposite directions through wheels 14, 15, 16, and 5 respectively, the wheel 6, which is shown out of place in the Figure, meshing with both wheels 5 and 16. The wheel 6, through further gearing including a rack-and-pinion 11, reciprocates a work-table or tool-carrier 12, and reversing is effected automatically. In a modification the wheel 6 is a double bevel-wheel engaging oppositelyrotating bevels on the main and countershafts, and driving the rack-and-pinion through a worm-gear. Sliding speed-changing wheels may also be provided, as shown in Fig. 1.
Patent GB-824290-A (GB)
Title: Stabilized hyaluronidase
IPC: C12N9/26
Filed: 1956-02-24
Abstract: A stabilized aqueous solution of hyaluronidase contains as a stabilizer a substance capable of forming a complex with a heavy metal, which has a higher stability constant for metals than has hyaluronidase and which is sufficiently soluble in water so as to provide a solution thereof which has a molarity with respect thereto of from about 0.02 to about 0.1, together with a neutral salt in an amount to give an ionic strength of the solution from 0.05 to 0.25. The specified stabilizing agents are amino acids, e.g. glycine which is preferred, a -alanine, valine, leucine, asparagine, proline, hydroxy proline, glutamine, threonine, epsilon aminocaproic acid and histidine; dipeptides such as di- or triglycine; amino acid derivatives, e.g. glycol-glycine amide, sarcosine, betaine, or taurine; and lower aliphatic substituted diamines, e.g. ethylene diamine di-, tri- or tetra-acetic acid. The neutral salt may be sodium or potassium chloride or phosphate.
Patent GB-879589-A (GB)
Title: Improvements in or relating to fluid-control valves
Inventor: JEFFERSON JOHN UPTON
IPC: F16K37/00
Filed: 1959-02-20
Abstract: 879,589. Valve accessories. ROLLSROYCE Ltd. Feb. 9, 1960 [Feb. 20, 1959], No. 6037/59. Class 135. A flow passage 10, 10a controlled by a valve member 15, e.g. of non-return type, has a ucct 16, 18 communicating with the passage and adapted to be closed by the valve member in the closed position of this member, the duct being open to pressure within the passage when the valve member is not in the closed position so as to convey pressurized fluid from the passage to a pressure-responsive device 20 adapted to give an indication that the valve member is not in its closed position. The device 20 may be a pressure-responsive diaphragm and may actuate a switch in an indicator lamp circuit. Preferably, the duct is provided with a restricted bleed-off passage to allow the pressure to leak away when the valve member is seated. In modifications designed to give warning if the valve member is not uniformly seated on its seating 16, the duct 16 communicates with a circumferential groove in this seating; or the duct may have several branches opening at spaced points on the seating; or the duct may be formed in a central tube coaxial with the seat opening and have its open end coterminous with the seating surface 16. In another modification, the device is applied to a parallel flow arrangement of two non-return valves in separate branches, and is arranged to indicate when both valves are seated.