baber/WOPTO huggingface dataset:
Patent GB-320617-A (GB)
Title: Improvements in rotary internal combustion engines
IPC: F02B53/00
Filed: 1928-06-16
Abstract: 320,617. Marsden, A. June 16, 1928. Fixed-abutment type; working-fluid supply; packing drums and vanes; cooling parts. - A rotary internal-combustion engine with vanes moving transversely across a rotor under the cam action of the walls of the casing is formed with one or more pairs of chambers on the same side of the rotor; in one chamber of a pair a vane compresses a charge which is transferred to the other chamber and ignited to act upon a preceding vane, the transfer of the charge being effected by a groove in the surface of the rotor which co-operates with a groove in the surface of the casing at the contacting area of the rotor and casing. With vanes pivotally mounted in the rotor any means for transferring the compressed charge to the expansion chamber on the same side of the rotor may be employed. The vanes 15 are shown pivoted in a disc rotor 7 and comprise two sector-shaped plates between which are inserted thin sector plates 21 moving outwardly under centrifugal action and V-shaped members 20 of spring metal strip to give lateral gastightness. Arc-shaped packing strips are also provided in the rotor periphery. The engine is enclosed in a water jacket 4.
Patent GB-645121-A (GB)
Title: Improvements in and relating to self-pulsing oscillators
IPC: H01T1/00
Filed: 1945-07-09
Abstract: 645,121. Valve keying and generating circuits. BRITISH THOMSON-HOUSTON CO., Ltd. July 9, 1945, No. 17513. Convention date, Feb. 19, 1943. [Classes 40 (v) and 40 (vi)] An oscillator comprises an electronic valve with an oscillatory circuit connected in part between anode and cathode, and in part between grid and cathode, and also a pulse generating circuit comprising a second anodecathode circuit which is transformer-coupled to a second grid-cathode circuit. The oscillator section consists of a Hartley circuit comprising valve 10, coils 14, 16, and condenser 18; condensers 17 are byepass condensers which prevent radio frequency oscillations penetrating the pulse generating network. The pulse generating network, which is independent of the oscillator section, consists of valve 10, transformer 20, delay line 26 and resistance 27. In operation, the primary 21 of transformer 20 is fed from the anode potential through condenser 23 which has negligible impedance at pulse frequency, so that as anode current rises, the secondary 22 of transformer 20 produces a positive voltage on the control electrode 13, thus accelerating the change and initiating the pulse. The total resistance of resistance 27 and the grid cathode resistance may be made equal to the surge impedance of the line, so that the voltage across the line is approximately half that developed across the secondary coil 22. This voltage, after travelling down the line and being reflected from the far end, produces a voltage across the line equal to the total voltage across the coil, thus effectively reducing the potential of the grid to zero after a time delay determined by the delay line. This condition causes regenerative action which effectively biasses the valve below cut-off. The resulting charge on condensers 28 in the delay line leaks away at a rate determined by variable resistance 30, after which the circuit is ready for the next synchronizing pulse which is applied to a third winding 25 in transformer 20. To ensure that the anode voltage during the pulse is sufficient to operate the oscillator section, a voltage limiting device 31 is connected across the primary coil 21, and to prevent excessive grid current during the pulse, a voltage limiting device 32 is connected between the grid and cathode.
Patent GB-411685-A (GB)
Title: Improvements in or relating to methods of improving electrical conductors
IPC: H01B3/28
Filed: 1933-06-20
Abstract: 411,685. Insulating conductors. McKAY, R. F., Fort Dunlop, Birmingham.- (International Latex Processes, Ltd.; 10, Lefebvre Street, St. Peter's Port, Guernsey.) June 20, 1933, No. 17514. [Class 36.] An insulated conductor is formed by passing a bare conductor or a paper- or cotton-coated conductor through an aqueous dispersion of rubber which has been purified by creaming or centrifuging. The dispersion may include fillers, stabilizers, vulcanizers and accelerators and may be employed in a prevulcanized condition. The Specification includes examples of such dispersions. Coagulation of the deposited rubber may be effected by passage of the coated conductor through a drying chamber or through an acid bath. A number of coatings may be applied and, to provide an insulation which is resistant to abrasion, a braided coating may be applied between two rubber coatings.
Patent GB-1081121-A (GB)
Title: Improvements in and relating to electrical circuits incorporating silicon-controlled diodes
Inventor: HUGHES ROBERT MICHAEL
IPC: H03K17/725
Filed: 1965-04-26
Abstract: 1,081,121. Transistor switching circuits. INTERNATIONAL RESEARCH & DEVELOPMENT CO. Ltd. March 14, 1966 [April 26, 1965], No. 17543/65. Headings H3T. [Also in Divisions F2 and G1] A thyristor is controlled at its gate electrode by a source of pulses supplied through a diode gate so that by reverse biasing the diode, from for example a photo-cell system, the supply of pulses is interrupted. The Figure shows forward and reverse clutch windings L1, L2 fed from a fullwave rectified supply C via alternatively conducting thyristors SCR1, SCR2. Pulses from a unijunction transistor oscillator 1 are applied to the gate of thyristor 1 so that it fires during each half cycle of the supply to energize the clutch winding and hold SeR2 non-conducting. When the light on a photo-cell P is however sufficient a transistor T conducts, reverse biasing the diode and so interrupting the supply of pulses. Accordingly SCR1 does not fire during the next half cycles but SCR2 does, so that clutch winding L2 is energized.
Patent GB-273746-A (GB)
Title: Improvements in or relating to means for fastening handles and the like on cycle handle-bars and like tubular bodies
IPC: B62K21/26
Filed: 1927-07-01
Abstract: 273,746. Cambi, C., and Flavien, E. July 1, 1926, [Convention date]. Fixing end handles by self-grip sockets.- In means for fastening handles and the like on cycle handle-bars and other tubular articles, wherein a resilient bush is compressed between the two members to be secured together, the bush 5 consists of a resilient tube split along its whole length, and is radially pressed along the greater part of its length against the inner wall of the handle-bar &c. 3 by the direct action of a non- threaded central core 4 on the handle 1. The core 4 may be cylindrical or slightly tapered, The bush 5 may be formed with embossed longitudinal channels. The outer end 5a of the bush is plain, and is provided with a flange 7 adapted to fit against the end of the handle-bar &c. 3.
Patent GB-393422-A (GB)
Title: An improved process for initiating explosives with maximum effciency
IPC: F42B3/10
Filed: 1932-06-21
Abstract: 393,422. Detonators. LIGNOZA SPOLKA AKCYJNA, Katowice, BARCIKOWSKI, J. and KIELCZEWISKI, J., Stary Bierun, both in Poland. June 21, 1932, No. 17586. [Class 9 (i).] A primary detonating charge 1, for example of fulminate of mercury, is made up of two superposed portions 2, 3, the lower portion which comes into contact with the secondary charge 9, which may be trotyl or tetryl, being wider than the upper portion. This arrangement reduces the amount of primary charge required and may even enable the secondary charge to be dispensed with. The secondary charge may first be inserted in its casing 8, then the primary charge, and finally its covering cap 7 ; or, if the casing 8 is open at the bottom, the cap 7 may first be inserted from the bottom, then the primary charge followed by the secondary charge, after which the bottom of the casing is sealed. The primary charge may be loaded into the cap 7 before its insertion in the casing 8, and the cap may have a watertight coating 10 of rubber or cellophane.
Patent GB-120582-A (GB)
Title: Improvements in Boots, Shoes and the like.
Inventor: TUINDER HENDRIK JACOBUS
IPC: A43B13/14
Filed: 1918-10-29
Abstract: 120,582. Tuinder, H. J. Sept. 22, 1917, [Convention date]. Soles.-In a boot or shoe having a heel spring, namely, the angle f, e, d of about 7-8 degrees, as shown upon a last, the hollow, that is the height p q at the reduced width q j, which is about threefourteenths of the length of the part c d (q1/cd = 3/14) is about one-seventh of the length of the part (pq/cd = 1/7), while the hollow r s at the reduced width s j, which is about seven-fortieths of the length of the foot (sj/cd = 7/40),-is about one ninth of the length of the part (rs/cd = 1/9).
Patent GB-1091833-A (GB)
Title: Apparatus for detecting substantially zero speed of a rotatable device
IPC: G01P13/00
Filed: 1966-04-22
Abstract: 1,091,833. Engine turning gear. WESTINGHOUSE ELECTRIC CORPORATION. April 22, 1966 [May 6, 1965], No. 17637/66. Heading F1K. [Also in Division G1] The shaft of a steam turbine 18 is rotated slowly by an auxiliary electric motor 12 during cooling after shut-down, the drive to the motor 12 being engaged automatically when the speed of the turbine - measured electrically, (see Division G1) is at or near zero. Under these conditions, a solenoid 96 is energized to pivot an idler gear 100 into engagement with the turning gear 14 on the turbine shaft, the movement of the lever 98 also serving to close contacts 106 and so energize the motor 12.
Patent GB-530649-A (GB)
Title: Improvements relating to life-saving appliances for use on submarines
IPC: B63G8/41
Filed: 1939-06-19
Abstract: 530,649. Life-saving appliances for submarines. DAVIDSON, T. M. June 19, 1939, No. 17791. [Class 68 (i)] For saving life from sunken submarines, provision is made of a bell E which may be spherical, or cylindrical with hemispherical, convex or concave upper and lower ends, the bell having tight doors, J, J<SP>1</SP>, operable from within or without the bell ; fixed below the bell is a frame H comprising rods welded together below to form a cable attachment, the frame serving to guide the bell back into position on the submarine L', and extending at least half the diameter of the bell below same. The bell normally rests on a rubber seal F above a chamber I with one or more tight doors D operable from either side ; pipes A, A<SP>1</SP>, and valves B, B', are provided to admit sea water to the chamber I to equalize pressure, and a valved pipe A<SP>3</SP> for draining the chamber. The cable N passes to a hand or power driven drum M in a watertight casing M' fixed to the chamber I, the handle of the drum having locking means. Above the bell is a small valved pipe C to ascertain whether the surface of the water has been reached, pipe connections K for supply of air to the submarine when the bell is lowered, and telephone connections ; a battery O, folded rubber raft &c. seat P, and windows Q are also provided.
Patent GB-129709-A (GB)
Title: Improvements in the Construction of Acid Resisting Tanks, Conduits and the like.
IPC: B65D85/84
Filed: 1917-12-03
Abstract: 129,709. Brookes Chemicals, Ltd., and Brooke, N. Dec. 3, 1917. Tanks.-The inner layer or layers c, c' of bricks in acid-resisting conduits, tanks, &c. are laid in or grouted with fused sulphur. A layer b, b<1> of asphalt or bituminous composition, a concrete foundation a, and cement-grouted walls e are also provided, with or without a layer of cement outside the asphalt or other layer.
Patent GB-1317365-A (GB)
Title: Three-way valves
IPC: F16K11/044
Filed: 1971-05-28
Abstract: 1317365 Valves LEBLANCSA 28 May 1971 [22 October 1970] 17838/71 Heading F2V A valve 1, which is intended for controlling the flow of water between a gas-heated boiler, a radiator and a sanitary water heater, none of which are shown, comprises a valve member 6 having a pair of parallel faces 7, 7a which are engageable with respective seats 16, 17 on movement of a lever 10 to which the valve member is pivoted at 9. The lever 10 extends through a resilient block 11, and is acted upon by a three sector cam 14 in opposition to a return spring 13. In use, the boiler is connected to the central inlet 4 whilst the outlets 2 and 3 are connected, respectively, to the radiator and the heater.
Patent GB-1389312-A (GB)
Title: Wetting and rewetting agents
IPC: C11D1/14
Filed: 1972-04-18
Abstract: 1389312 Olefin sulphonate wetting agent JEFFERSON CHEMICAL CO Inc 18 April 1972 [3 May 1971 (2)] 17870/72 Heading C5D [Also in Divisions D1 and D2] A wetting agent comprises (a) at least 75 weight per cent of salts of C 16  sulphonated vinylidene olefines and (b) salts of C 18  sulphonated vinylidene olefines. The agent may be diluted with a carrier.
Patent GB-530842-A (GB)
Title: Improvements in and relating to two-way electrical wave transmission systems
IPC: H04J1/04
Filed: 1939-06-20
Abstract: 530,842. Two-way transmission systems, STANDARD TELEPHONES & CABLES, Ltd., and WALSH, R. June 20, 1939, No. 17964. Drawings to Specification. [Class 40 (iv)] In a two-way carrier system in which the carrier and both side bands are transmitted, received signals are changed in frequency before rectification and the same source of frequency is used at each terminal for modulation by outgoing signals and for changing the frequency of received signals. The invention may be applied to a single channel system over a line which has variable and poor transmission characteristics in some frequency ranges, the frequency of the sources being chosen so that the frequencies of transmitted signals lie in the best part of the range. This is particularly useful for a wide broadcast channel. When applied to a multiplex system, it is arranged that the sum or difference frequencies of the sources at the terminals is constant so that identical filters and rectifiers may be used in the various channels. The sum or difference frequency may lie outside the entire range of frequency of the sources at both terminals or when these sources lie within two spaced bands, a difference frequency lying between the two bands may be used. The invention is applicable to carrier telephony, and voice frequency or high frequency carrier telegraphy.
Patent GB-576331-A (GB)
Title: Furnace temperature control
IPC: G05D23/275
Filed: 1943-11-02
Abstract: 576,331. Heat - treatment furnaces. McDONALD, J., FINLAYSON, A., and G.W.B. ELECTRIC FURNACES, Ltd. Nov. 2, 1943, Nos. 18100 and 19515. [Class 51 (ii)] [Also in Group XXXV] In heat-treatment furnaces in which air is circulated by means of a fan or the like the temperature is controlled by varying the heat derived from the friction of the circulating air. The regulation may be effected by varying the speed of the circulating fan or by varying the cross sectional area available in the furnace for the circulating air. Fig. 1 shows a heat-treatment furnace c having heating elements a and a fan f driven by an electric motor g for circulating air through the furnace and treatment chamber e. A thermocouple h is connected by leads j, l to controlling devices k, m for varying the speed of the motor g. Figs. 4 and 5 show the electric circuits for a two-speed motor M for driving the circulating fan. Current from the mains MS passes through a main contactor C1 provided with an operating coil C1 and thence through the high speed contactor C3 'having an operating coil C31 or a low speed contactor C2 provided with an operating coil C21 to the motor M. The operating coils C11, C21, C31 are supplied from mains CS and normally current flows through the coil C31 of the high speed contactor C3 and a relay switch R which is operated by a relay coil R1 under the control of a thermostat T. When the temperature rises to a predetermined level, the thermostat T operates the switch R to cut out the high speed contactor C3 and close the low speed contactor C2 to run the motor at a lower speed. As shown in Fig. 3, the thermocouple h operates through a control device k and leads l a motor m which actuates through wires r a baffle plate o to vary the cross sectional area of the path for the air circulated by a fan f. Specifications 477,607 and 519,675 are referred to.
Patent GB-942763-A (GB)
Title: Improvements in or relating to varying the inductance of a coil
IPC: H01F21/08
Filed: 1960-05-23
Abstract: 942,763. Controlled non-linear inductors; radio receiver switch tuning arrangements. PHILIPS ELECTRICAL INDUSTRIES Ltd. May 23, 1960 [May 25, 1959], No. 18102/60. Headings H3B and H3Q. [Also in Division H1] The inductance of a coil 5, or of a plurality of interconnected coils, is varied by steps by adjusting the bias magnetization of the coil core 3, or coil cores, by means of a plurality of low coercivity electromagnets 7 each of which is separately energizable and each of which can be demagnetized by passing a current through a winding 11 thereon, and can be magnetized by passing a current of appropriate polarity through the same or another winding (9) thereon. The coil and electromagnet cores may be of suitable ferrites, the latter being demagnetized by discharge of a capacitor 13 through windings 11. The inductance may consist of a number of coil sections on the same core or on separate cores each of which has its own electromagnet. The biasing effect may be adjusted by making the electromagnet cores radially displaceable or by using an adjustable shunting plate. Fig. 2 shows the variable inductance 1 forming a resonant tuning circuit with a variable capacitor 19, e.g. for a radio receiver, three biasing electromagnets being provided with windings 9 to give four different tunings. Depression of any push-button causes a capacitor discharge to demagnetize all the electromagnets, the magnetic re-biasing depending on how many of the windings 9 are connected by the push-button in series with source 25.
Patent GB-450903-A (GB)
Title: Automobile control devices
Filed: 1935-06-24
Abstract: 450,903. Controlling motor vehicles. HULL, H. E., 3700, Massachusetts Avenue, Washington, U.S.A. June 24, 1935, No. 18103. [Class 79 (v)] In a motor vehicle the brake lever 10, Fig. 1, having a pedal 14 is mounted on a transverse shaft 11 and the accelerator lever 13 is mounted on the same shaft, the lever 13 having a pedal 14 projecting through a slot in the pedal 12, so that the throttle lever 17 may be actuated normally against the action of a spring 19 to open the throttle. The lever 13 actuates the lever 17 through a rod 18 pivoted at one end to the lever 13 and having a loose engagement at its other end with the throttle lever. When the pedal 12 is pushed down to apply the brakes, a lever 20, 22 is rocked on its pivot 21 by the brake lever which is connected to it by a link 23. The rod 18, which passes through a slot in lever arm 20, is thereby moved up out of engagement with the lever 17 so that the throttle is immediately closed by spring 19. An arm 26 on the brake lever is also connected by a link 25 with a lever 24, which controls free-wheeling, in such a manner that when the brakes are applied the gear connection with the engine is restored for the engine to assist the brakes. A loose connection between the lever 24 and link 25 allows independent operation of the lever 24 by hand.
Patent GB-600661-A (GB)
Title: Improvements in and relating to gyro-compasses
IPC: G01C19/38
Filed: 1944-09-22
Abstract: 600,661. Gyroscopes. SPERRY GYROSCOPE CO., Inc. Sept. 22, 1944, No. 18139. Convention date, Sept. 29, 1943. [Class 97 (iii)] The rotor-case trunnions 22, 22<1> of a gyrocompass are vertically displaceable in slots 23, 23<1> in the vertically pivoted ring 21 and the case 20 is suspended from the ring by links, preferably flexible tapes or leaf springs 25, 25<1>, connected to the case eccentrically of the trunnion axis so that upon relative tilting of the case and ring a precessing torque is established. The suspension means are preferably secured to cranks 24, 24' arranged above or below the trunnion axis. When below the axis the cranks 24 may be fitted with stop pins 33, Fig. 10, to check excessive displacement due to rolling &c. and with switch contacts 46, 47 which, by bridging contacts 44, 45, control a damping motor the stator 39 of which is housed in the vertical ring 21, the rotor being carried by the phantom ring 28 concentric with the lower pivot. Alternatively the phantom ring may have a slot 36, Fig. 8, to accommodate an extension 35 on one trunnion to which is affixed a blade spring 34 moving between adjustable stops 37.
Patent GB-579230-A (GB)
Title: Improvements in or relating to radio and like ultra high frequency systems
IPC: H01F21/04
Filed: 1939-06-22
Abstract: 579,230. Valve generating circuits; wireless receiving systems. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. June 22, 1939, No. 18252. Convention date, July 30, 1938. [Classes 40 (iii) and- 40 (v)] [Also in Groups XXXV and XXXVI] An ultra-high-frequency oscillating valve 14 has its grid (or anode) connected to the inner conductor 4 of a frequency-stabilizing concentric-tube resonator 3, its anode (or grid) connected to ground for high-frequency energy, and its cathode (indirectly-heated) coupled to ground through a coil 26 providing variable regeneration. As shown, the valve 14 produces local oscillations for an ultra-short-wave superheterodyne receiver, the oscillations being fed over bias resistor R1 to the cathode of a detector valve 15 from the inner conductor 4 and the incoming signals being fed to the. grid over a second concentric-tube resonator 2. The inner conductor of each resonator has an extension 6 adjustable for tuning purposes through flexible coupling means 44 by a threaded shaft engaging a sleeve at the end of the extension 6, the latter being keyed to conductor 4 so as not to rotate. Coarse and fine adjusting means and indicators may be provided, Fig. 2a (not shown). The filament and anode supplies for the valves 14, 15 include filters comprising condensers 17 and chokes 18 or resistances R2, R5, &c., the valves, chokes and resistances being contained in separate compartments formed from partitioned square tubing; and the condensers comprising metal plates and dielectric spacers on each side of the partitions with central clamping screws passing through holes in the partitions. The resonator 2 and the detector and oscillator units are slidable relatively to one another and to the resonator 3 by slotted connections 35, Fig. 2. The regeneration coil 26 may be a coil of copper tubing with tuning effected by screwing a metal plug 28 into the turns of the coil to short-circuit a variable number of turns. The tubing contains the filamentheating conductors. Connection to the inner conductors of the resonators is made by collartype clips 9 with clamping screws 10, the clips having two overlapping recessed portions between which a mica spacer 8 may be provided to constitute the grid condenser 24. The grid-leak resistance R4 is then soldered across the two parts of the connector. The lower part of the connecting clip passes through a slot in the outer conductor of the resonator and may have insulating heads 7 to avoid metallic contact with the outer conductor.