baber/WOPTO huggingface dataset:
Patent GB-599139-A (GB)
Title: Improvements in electrical devices for the automatic control of a variable quantity
IPC: H02P23/16
Filed: 1945-02-13
Abstract: 599,139. Actuation of switches. DICKINSON, F. H., and LONDON PASSENGER TRANSPORT BOARD. Feb. 13, 1945, No. 3598. [Class 38(v)] [Also in Group XXXV] A switch mechanism comprises a number of co-operating switch actuating members interconnected by a multiplying gear train so that one of the members may revolve many times without repeated actuation of the switch and one switch may be restored after actuation only when the mechanism has been restored to its original condition. A shaft 28 drives a cam 37 cut away at 38 and also, through successive stages of reduction gearing the notched cams 40, 41 and 42; the shaft also drives a notched disc 52 whereby a switch arm 53 is operated to engage contact 58 or 59 according to the sense of rotation of shaft 28. When operated the arm 53 is held by a notch 55 or 56 on a lever 50 pivoted at 51 and carrying projections riding on cam 38 the notched cams 40-42. Repeated rotation of shaft 28 in the original sense has no effect on switch arm 53, which is only restored or operated in the reverse sense when the shaft 28 has retraced all its revolutions in the original sense to bring all the notches on the cams into register with the respective projections on lever 50.
Patent GB-232363-A (GB)
Title: Improvements in or relating to wireless receiving circuits
IPC: H04B1/16
Filed: 1924-02-12
Abstract: 232,363. Warner, H. J., and Tyler, H. Feb. 12, 1924. Thermionic amplifiers and detectors.-Interelectrode capacity coupling between the grid and plate circuits is utilized to secure a positive reaction tending towards self-oscillation, and the valve is then stabilized on the threshold point by means of reverse electromagnetic coupling between untuned coils in the external circuits. As shown in Fig. 1, the untuned plate coil 9 and grid coil 3 are, of equal dimensions, both wound in disc form, the direction of the turns being such as to curb the tendency to oscillation arising from the internal capacity coupling. The grid condenser 4 is of relatively small capacity. The grid may be connected to the positive pole of the filament battery instead of the negative as shown. In Fig. 3 the aerial is coupled to the grid through a secondary circuit comprising a tuned circuit 12, 13 shunted by a second tuned circuit 14, 15 as shown. The condenser 15 may be fixed, and the coil 14 may be a variometer. The degree of electrostatic coupling may also be adjusted by varying the relative position of the coils 3, 9.
Patent GB-138435-A (GB)
Title: Improvements in and relating to candle moulding machines
IPC: C11C5/02
Filed: 1919-02-14
Abstract: 138,435. Day, W. H., and Strickland, W. A. H. Feb. 14, 1919. Candles.-In a candle-making machine, the material is poured into the mould 3 through a filling-channel 1 positioned bv a stop 8 and laterally movable slabs 9 so that its edges lie along the centre of two adjacent lines of moulds, the wicks 5 passing through grooves 4 in the edges of the channel, the slats, or both, to the candles 6 in the clamps 7. When the material sets it is removed from the channel and the wicks are cut by a suitably-shaped knife, the channel is removed, the slabs moved aside, and the candles pushed into the clamps 7 bv the pistons 13. Preferably, the channel is sloped upward from the filling-inlet 12, and is double walled to retain the heat. The clamps shown in Fig. 3 consist of two parts provided with semicircular candle recesses 16 and normally kept slightly apart by springs but brought together by a lever 17 having cams 19 or being grooved at one side where it engages the eyes 18. Cooling about the mouths of the moulds 3 is hastened by suitably recessing the mould-plate on the underside.
Patent GB-247559-A (GB)
Title: Cable connecting device
IPC: H01R4/62
Filed: 1926-02-09
Abstract: 247,559. Dufour, P. F. Feb. 16, 1925, [Convention date]. Cable couplings. - Cables consisting of a core and surrounding strands, e.g. a core of steel and strands of aluminium, are connected by a device having two independent sets of wedging means, one for the core and the other for the external strands. A split tapered sleeve 5 separates the core 6 from the outer strands 3 and grips the latter against the inner tapered surface of the screwed sleeve 4. A split sleeve 8 of galvanized sfeel similarly surrounds the centre wire and grips the other strands within a sleeve 7 of galvanized steel or aluminium. The sleeve 8 may surround the entire core. The sleeves 4 at each end have right and left hand threads so that they are drawn together when the body 1 of the coupling is turned, and abut against the sleeves 7. Alternatively the outside of the sleeve 7 may be coned to fit within an extension of the sleeve 4.
Patent GB-229297-A (GB)
IPC: H01H33/42
Filed: 1925-02-10
Abstract: 229,297. International General Electric Co., Inc., (Assignees of Allgemeine Elektricitõts Ges.). Feb. 11, 1924, [Convention date]. High-potential switches have the pivoted switch blade e operated through a rod k of insulating material which passes through the hollow insulator a. Rotation of the operating crank m draws down the rod k which causes the crank h to rotate the blade e about its pivot d. The blade e is provided with an auxiliary spring controlled sparking blade g which leaves the fixed contact f with a quick-action.
Patent GB-634975-A (GB)
Title: Improvements in or relating to valves
IPC: F16K7/08
Filed: 1948-02-09
Abstract: 634,975. Manually-actuated valves. KILCOIN, A. H. P. Feb. 9, 1948, No. 3752. [Class 135] [Also in Group XXX] A valve, suitable to control the flow of lumpy solids &c. comprises a body formed with a through passage, a ring rotatable around the longitudinal axis of the passage, and a flexible sleeve so connected to the ring and the body that, on rotation of the ring, the sleeve is twisted and forms two spaced diaphragms closing the passage through the valve. As shown, the body is made up of two rings 10, 11 bolted together, and the rotatable ring 12 is housed in a recess in ring 10 and is provided with an external operating handle 13 movable in a slot cut in ring 10. The ends of the flexible sleeve 15 are attached to rings 10, 11 by means of retaining rings 16 held in position by screws, and the middle portion of the sleeve is attached in a similar manner to ring 12. The sleeve is made of fabric, chains, rubber strips, &c. and the two folds may comprise two separate portions of material. A screw is provided to lock ring 12 in its adjusted position. The recess housing ring 12 may be made up of opposed recesses cut in both rings 10, 11, and handle 13 may be replaced by a cord, chain, pawl-and-ratchet actuating means &c. The passageway through the valve may be tapered &c.
Patent GB-966853-A (GB)
Title: Pneumatic operating device
Inventor: MORTIMER FRANK RADCLIFFE
IPC: F15B7/08
Filed: 1960-02-03
Abstract: 966,853. Controlling vehicles. DUNLOP RUBBER CO. Ltd. Jan. 19, 1961 [Feb. 3 1960], No. 3769/60. Heading B7H. [Also in Division F1] A pneumatic device for operating a carburetter throttle arm, for example, comprises a deformable pneumatic operating unit, means to transmit air pressure generated in the unit by deformation thereof to a unit for actuating the throttle arm, and valve means arranged to be held open by the unit in the undeformed state thereof to permit communication between the interior of the unit and atmosphere, the valve means being arranged to close on deformation of the unit to seal the interior from atmosphere. As described, the operating unit is foot operable and consists of a moulded sac 2, Fig. 1, e.g. of rubber mounted air-tightly on a base-plate 3, the latter having an air vent 17 therein and a circular ridge 16 acting as a valve seat for cooperation with an annular impermeable rubber diaphragm 18 to seal the interior of the unit; the diaphragm 18 is normally held away from the ridge 16 by a tension cord 28, e.g. of nylon, and has holes 27 therein communicating with a tube 13 for receiving the end of a flexible pipe (not shown) leading to a tubular member 47 of the actuating unit, Fig. 2. The latter consists of a cylindrical metal body 32 in which is slidably disposed a spring-loaded plunger 40 provided with a rod 41 for coupling to the carburetter throttle arm, a rolling lobe rubber diaphragm 38 being air-tightly sealed to the body 32 and to the plunger 40. In alternative constructions, not shown in the drawings, the operating unit may comprise bellows or a diaphragm, and the actuating unit may comprise a coiled, flat, narrow-section pneumatic chamber connected at its inner end to the throttle spindle in such a manner that as the chamber is inflated it tends to open out and rotate the spindle, or the actuating unit may comprise a flat, narrow-section pneumatic chamber associated with a part-circular guide, the throttle spindle being provided with a roller co-operating with the chamber and the guide so that as the chamber is inflated the roller is pushed along the guide to rotate the spindle.
Patent GB-962881-A (GB)
Title: Improvements in or relating to machines for laying up hollow laminated articles
Inventor: WARNKEN ELMER PERSHING
IPC: B29C53/66
Filed: 1963-01-30
Abstract: 962,881. Casings for projectiles. STUDEBAKER CORPORATION. June 30, 1963, No. 3818/63. Heading F3A. [Also in Division F2] A machine for helically winding tape on a mandrel (see Division F2) is used to produce a portion 125 of a nose cone for a rocket. The tape used can be of glass fibre cloth, asbestos fibre cloth, or other heat resistant fibrous material, impregnated with a thermosetting resin such as a phenol formaldehyde resin. When the strip laminations have been wound on the mandrel, the laminations are moulded and the resin is set and cured. The outer face of the portion 125 is machined to remove irregularities and a nose cone 127 of resin-impregnated glass fibre cloth laminations can be adhesively attached to the body. Specification 959,360 is referred to.
Patent GB-1062001-A (GB)
Title: An inverter
IPC: H02M1/06
Filed: 1965-01-28
Abstract: 1,062,001. Inverting. GENERAL ELECTRIC CO. Jan. 28, 1965 [Feb. 28, 1964]. No. 3834/65. Heading H2F. A parallel inverter including main controllable rectifiers such as thyratrons, ignitrons or as shown thyristors SCR1 and SCR2 also includes a shut-off circuit for each main rectifier, each such circuit including an auxiliary rectifier SCR3, SCR4. As shown, the anode of each auxiliary rectifier is connected to the D.C. supply through a resistor 12, 13 of a value such that when conducting no more than minimum hold-on current flows. The anodes of the main and auxiliary rectifiers are connected through commutating capacitors 6, 9, and each auxiliary rectifier is shunted by a series connection of inductor 8 and diode 7. Control of the output is effected by pulse width variation. The arrangement permits intermittent operation, whereupon in the stand-by periods control signals to SCR1 and SCR2 are stopped, and SCR3 and SCR4 are continuously conducting. In operation after SCR2 has fired and with SCR3 conducting a charge of 2Vs is developed across the commutating capacitor 6 with the polarity shown. On firing SCR1, this capacitor applies - 2Vs to the anode of SCR3, shutting it off, and then resonant discharge through the inductor 8 and diode 7 reverses this voltage. Subsequently SCR3 is fired to shut off SCR1. At a subsequent time SCR2 is fired to start the opposite half-cycle. In a first modification the inductor and diode are dispensed with. After SCR1 has fired shutting off SCR3 the capacitor 6 is charged via resistor 12 to a voltage +Vs which is used to shut-off SCR1 when SCR3 fires. In a second embodiment, the resistors R12, R13 are dispensed with, and the D.C. positive pole is connected to the transformer centre tap via one half of a tapped inductor whose other half is connected to earth via a diode to minimize voltage surges (Fig. 3, not shown). Unsymmetrical square-waves (Fig. 4, not shown) are applied as firing pulses. The output may be rectified to provide a D.C:-D.C. converter.
Patent GB-970455-A (GB)
Title: Improvements in or relating to magnetic playback heads
IPC: G11B5/127
Filed: 1963-01-30
Abstract: 970,455. Hall-plate playback heads. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. Jan. 30, 1963 [Feb. 2, 1962], No; 3839/63. Heading G5R.  After assembling ferrite members 3 with a glass gap-spacer 1 and a further support 11, a pair of coplanar Hall plates 5, 6 are evaporated on to a large ferrite base 4, the plates overlapping the members 3 to enable the Hall connections to be readily made. The plates are preferably in a plane normal to the gap and are wired up so that their outputs are series-assisting. Specification 782,327 is referred to.
Patent GB-1500653-A (GB)
Title: Cooking plates
IPC: H05B3/74
Filed: 1976-01-30
Abstract: 1500653 Glass cooker plate CARL-ZEISSSTIFTUNG [trading as JENAER GLASWERK SCHOTT & GEN] 30 Jan 1976 03841/76 Heading C1M [Also in Divisions B2 and F4] A composite glass plate, suitable for use with one or more heating elements as a cooking plate, comprises a first layer of a glass ceramic having a high transmittance value for radiation with a wave length of 0À7-5 microns and a second layer (thinner than the first) having substantial absorbence for these wave lengths, tenaciously adherent to the first layer. The second layer preferably has a thickness no more than 1/10th of that of the first layer, and may be produced by fusing metal oxides (e.g. of Co or Mn) into the first surface or by applying an enamel coating. The second layer may be only applied to preselected areas of the first layer. A third layer may be applied, on to the first layer on the opposite side thereof to the second layer, which has the same size and stress condition as the second layer but transmittance characteristics as the first layer. The second and third layers may be applied over the whole of the first layer under sufficient pressure to impart permanent compressive stress to the composite plate.
Patent GB-346892-A (GB)
Title: Improvements in means for regulating internal combustion engines for aircraft
IPC: F02D9/00
Filed: 1930-02-05
Abstract: 346,892. Regulating. ROYCE, SIR F. H., Nightingale Road, Derby. Feb. 5, 1930, Nos. 3877 and 10548. [Classes 7 (iii) and 7 (vi).] In aircraft engines fitted with altitude controls, full opening of the throttle at ground level is prevented by a cam c bearing against a member i connected to the pilot's control h, h<1> of the throttle a<2>. The cam may be actuated by a relay comprising a piston b<7> moved in a cylinder b<6> by the pressure of the supercharging-blower a controlled by a valve d actuated by an aneroid device b<2>. The casing b<1> is in communication with the inlet manifold at the outlet side of the blower by means of a pipe ,g, passage d<2> through the valve, and holes d<4>. At low levels, the aneroid device b<2> contracts and raises the valve d, so as to connect the lower side of the piston b<7> to the pipe g through a passage e<5>, and the upper side of the piston through passages e3, d<5> to a pipe f leading to the inlet side of the blower, whereupon the piston is raised and the cam c actuated to give a closing movement to the throttle. The cam c may be shaped so as to be irreversible by the pilot's control at low levels, but reversible at higher altitudes. Hunting of the relay device may be prevented by forming small serrations in the valve or valve casing at the ends of the recess d<5> and at the bottom and top of the ports e and e<2> respectively. The aneroid device b<2> may be protected against backfire or excessive vacuum by means described in Specification 346,503. Specifications 348,316 and 351,117 also are referred to.
Patent GB-104400-A (GB)
Title: Improvements relating to Valves for Oxygen and other High Pressure Gases.
Inventor: JENKINS HAROLD CARNEGIE
IPC: B63C11/22
Filed: 1916-03-15
Abstract: 104,400. Jenkins, H. C., and Ellacott, E. March 15, 1916. Devices for preventing accidental removal or loss of valve parts.-In screwdown valves for oxygen or other high-pressure gases, such as are used in breathing-apparatus for diving, mining, or marine rescue, a stop-device is provided to prevent the valve from being completely screwed out of the valve body. The stop comprises a member g of resilient or other material attached to the hand-wheel f or handle, or to the spindle, and having a laterally projecting portion g<1> embracing the screw-thread of the gland nut e, or a groove in the nut or the valve body, entirely as a ring or partly.
Patent GB-162427-A (GB)
Title: Improved household rack
IPC: A47G29/02
Filed: 1920-02-10
Abstract: 162,427. Buckley, W. J., and Bunting, G. E. Feb. 10, 1920. Clothes racks.-In a clothes-airing device of the kind comprising a vertical wall bracket and a second semicircular bracket projecting horizontally therefrom and slotted to hold the clothes suspension rods projecting outwards, the wall bracket, Fig. 1, is formed with T-shaped slots c partly undercut and the horizontal bracket, Fig. 4, is formed with undercut projections f to engage the T-sbaped slots of the wall bracket or of a third bracket formed with a clamp by which it is secured to a mantelshelf &c. The rods are formed with hooks by which they may be suspended from the slots e when out of use.
Patent GB-339195-A (GB)
Title: Improvements in or relating to fishing reels
IPC: A01K89/015
Filed: 1930-02-07
Abstract: 339,195. Hardy Bros. (Alnwick) 1928, Ltd., and Hardy, L. R. Feb. 7, 1930. Reels and winches, rod. - The gear-controlling lever 26 of a fishing reel is adapted to be positively held when the gears are in mesh by a spring- actuated lever 28. To disengage the multiplying gear connecting the handle with the spool, the lever 28 is moved to the dotted position and its nose 30 moves the gear lever 26 to the position shown dotted against the action of a spring 27. Attached to the lever 26 is a finger 34, which is adapted to bear on a brake lever 15 so that the spool is braked immediately it is disengaged from the gear lever 26. The braking effect is adjusted by a thumbscrew 21, which tensions a spring 18. Fig. 3 shows a modified arrangement of the levers 26, 28. Specification 9788/15 is referred to.
Patent GB-892394-A (GB)
Title: Means for supplying electric power to a control circuit of an electric current control device
IPC: G05F1/42
Filed: 1960-02-08
Abstract: 892,394. Supply systems for resistance welding. ALLMANNA SVENSKA ELEKTRISKA AB. Feb. 8, 1960 [Feb. 9, 1959], No. 4322/60. Class 38 (4). A single-phase load 1 such as a resistance welder supplied from a 3-phase source R, S<SP>1</SP>, T<SP>1</SP>, and controlled by a device 6 which is phase or voltage sensitive, has the device connected to the phase or voltage RS<SP>1</SP> least influenced by changes in the load, and the phase change is compensated by a phase-displacing circuit such as a capacitor 3, resistance 4 and transformer 7. The supply to the device 6 is taken from across the resistor 4. The k.v.a. rating of the resistor capacitor combination 3, 4 is made about 10 times that of the device 6. In the Specification, it is stated that the voltage RS<SP>1</SP> changes less than the voltage RT<SP>1</SP>.
Patent GB-716898-A (GB)
Title: Improvements in or relating to electromagnetic transducer head
Inventor: CAMRAS MARVIN
IPC: C21B3/04
Filed: 1952-02-19
Abstract: 716,898. Magnetic recording and reproducing apparatus. ARMOUR RESEARCH FOUNDATION OF ILLINOIS INSTITUTE OF TECHNOLOGY. Feb. 19, 1952, No. 4358/52. Class 40 (2). A magnetic transducing head is provided with means for producing a secondary magnetic field to produce changes in the intensity and configuration of the primary field in the region of one of the pole tips as compared with that of the other tip. In the embodiments described, the secondary magnetic field is obtained by the use of a second core member 15 such as shown in Fig. 1. A coil 26 on the second core member may be fed with the same audio currents as fed to the main coils 24, 25, and the polarity so arranged that the resultant field is strengthened in the region of the trailing polepiece 13, Fig. 5, after leaving which the field rapidly decreases. Both core members may be energised by signal currents having high frequency bias currents superimposed on them. A second winding 39, Fig. 13, may be provided on the secondary core member 15 and connected in such a manner as to produce an intense audio field on one side of the transducing gap and an intense bias field on the other side of the said gap. In another embodiment, Figs. 14 and 15, the high frequency bias is supplied to both core portions through separate windings 42, 43. The high frequency bias supplied to these windings is displaced 90 degrees in phase with respect to each other to produce a rotating high frequency field. In yet another embodiment, Fig. 10, an auxiliary yoke 37 is provided having a coil 38 which has a sufficient number of turns to provide an intense magnetic field for erazing purposes. A modification of this embodiment, Fig. 11 (not shown), dispenses with the secondary yoke 34, the auxiliary yoke 37 serving to provide a sufficient cross field in the region of the gap to provide the desired high frequency bias.
Patent GB-471897-A (GB)
Title: Improvements in or relating to devices for conditioning the air intake to carburettors
IPC: F02M35/04
Filed: 1936-02-13
Abstract: 471,897. Carburetters ; conditioning air. NOBLE, P. W., and NOBLE, H. Feb. 13, 1936, No. 4359. [Class 7 (iii)] [Also in Group XXVIII] A device for conditioning the air supply to a carburetter comprises an air filter E through which part of the air flows past the lower edge of a valve H and direct to the carburetter through a flared passage C whilst the remainder enters the passage after traversing a heater F. The valve H which regulates the quantity of air flowing past the heater is controlled by a thermostat J. The heater has corrugated pipes F arranged in parallel and heated by the exhaust gases.
Patent GB-1064741-A (GB)
Title: Apparatus for feeding wrapper or other sheets
Inventor: LIEDTKE KURT
IPC: B65B41/10
Filed: 1963-02-04
Abstract: 1,064,741. Feeding sheets. K. KÍRBER. Jan. 2, 1964 [Feb. 4, 1963], No. 4422/63. Heading B6B. [Also in Division B8] A suction member for feeding wrapper sheets comprises two suction feeder wheels which engage the two side edges of a wrapper, the periphery of each wheel having suction recesses which overlap as seen in the direction of the axis of the wheels. As described, sheets S of wrapping foil such as regenerated cellulose or synthetic resin, are fed transversely across the path of an article 8 to be wrapped by two spaced suction wheels 4, 5, wheels which grip the edges of the sheets and which are arranged on the two sides of a track 1 for the articles 8. Each article 8 is pushed along the track between the suction wheels by a member 2 on a feeder chain, and carries the sheet S with it. Each suction wheel has a series of inclined recesses 20 on its peripheral surface into which small holes lead from radial suction passages in the wheel: some recesses 20 communicate with radial passages by means of inclined holes drilled into the passages, and others by holes drilled in plugs fitted in the passages. Wrapper material E in web form is fed by a roller 12 to a suction drum 9, is cut into sheets S by a cutter 10 on a drum 11, and the sheets are transferred to the two suction wheels with the assistance of compressed air from a chamber in the drum 9.