baber/WOPTO huggingface dataset:
Patent GB-1397391-A (GB)
Title: Actuator for stroke control in hydraulic machines
IPC: F04B49/00
Filed: 1971-06-23
Abstract: 1397391 Variable-stroke pump and motor control LUCAS INDUSTRIES Ltd 16 June 1972 [23 June 1971] 29402/71 Heading G3P [Also in Division F2]  The displacement of a pump or motor in a hydrostatic transmission is controlled by a piston 14 subjected at its right-hand side to the pump output pressure, as transmitted by selector valve 16, and at its left-hand side to a servo pressure established by spool 20 which can connect the left-hand side to exhaust via 30, 29, 31, 28, 32 or to the right-hand side via 30, 29, 27, the piston tending to follow-up displacement of the spool. A sleeve 34 on the spool coacts with the ends of chamber 35 to limit relative displacement of the spool, and also serves to connect the spool to extension 36 which is biased by spring 40 into abutment with piston 38 which responds to a control pressure at 42 opposed either by a spring 41 or a second control pressure at 43. In the embodiment shown, the extreme leftward position of piston 38 corresponds to maximum stroke, port 43 is blanked off and piston 38 has plug 46 with a by-pass restrictor 47, and an external control pressure is applied at 42 in the case where the transmission is controlled by varying motor displacement. When the transmission is controlled by varying pump displacement, the pump discharge pressure is applied at 42. In a modification, piston 38 has a blank plug which abuts a stop screw in the end of chamber 37, defining a zero-stroke position, and in this case an external pressure is applied at 42 when the transmission is controlled by varying pump displacement, whereas motor input pressure is applied at 42 when the transmission is controlled by varying motor displacement. In the latter case, the control mode at the motor may be such that the power output (PxQ) remains constant. In a further modification, spring 41 is omitted and piston 38 responds to the pressure drop across a restrictor in the return line and adjusts pump displacement to maintain the motor speed constant. Alternatively, the piston responds to the pressure drop across a restrictor in a make-up line supplied by an auxiliary pump driven by the same prime mover as the main pump, and in this case piston 38 adjusts the motor or pump displacement to maintain the prime mover speed constant.
Patent GB-1057622-A (GB)
Title: Variable impedance network
IPC: H03G1/00
Filed: 1963-07-25
Abstract: 1,057,622. Phase modulation; transistor oscillator circuits; data trasnmission. WESTERN ELECTRIC CO. Inc. July 25, 1963 [Aug. 7, 1962], No. 29440/63. Headings H3R, H3T and H4P. A junction transistor has its collector/ emitter biased to the sustaining voltage i.e. where a (ratio of collector to emitter current) is unity so that an alternating modulating voltage in the collector circuit causes a to vary between values greater and less than unity whereby the emitter-earth impedance of the transistor reverses in sign as a passes through unity A carrier wave applied across emitter circuit resistor 16 is therefore phase modulated by analogue modulating signals. If the modulating signals are digital, as shown, phase inversion is effected by the alternate + and - pulses provided that resistors 16, 18 are large. The capacitor C in the base circuit may be removed from across R and inserted in place of resistor 18, Fig. 4 (not shown). Alternatively, with the carrier source 28 omitted, a capacitor or tuned circuit may be connected in the emitter circuit, to form an oscillator, and C may be omitted in the case of a tuned emitter circuit.
Patent GB-533459-A (GB)
Title: Process for the regenerating catalysts for the hydrogenation of carbon monoxide
IPC: B01J23/94
Filed: 1939-11-07
Abstract: 533,459. Catalytic agents. POTTS, H. E. (Naamlooze Vennootschap International Koolwaterstoffen Synthese Maatschappij International Hydrocarbon Synthesis Co.). Nov. 7, 1939, No.29534. [Class 1 (i)] Catalysts used in the synthesis of hydrocarbons from carbon monoxide and hydrogen are regenerated by treatment with a current of hydrogen at a temperature of 400-450‹C. for a period longer than is necessary to remove high molecular products.
Patent GB-498208-A (GB)
Title: Improvements relating to sound producing apparatus
IPC: G08B3/06
Filed: 1937-10-29
Abstract: 498,208. Sirens. CHANCE BROS. & CO., Ltd., DODDS, J. W., and COOPER, F. W. Oct. 29, 1937, No. 29579. [Class 13] In a sound-producing apparatus of the type in which compressed air is periodically admitted to a horn at an appropriate frequency by a piston actuated by compressed air, the part of the apparatus through which compressed air is admitted to the piston includes two or more valves through which air can be supplied individually to the piston at different pressures. The air controlling the piston passes from a reservoir d to a pipe h either through a pipe g and a valve m or through a pipe i, reducing valve q, auxiliary reservoir j, pipe k and a second valve m. The valves m are controlled by valves r operated by cams s on the shaft of a motor t and the valve e controlling the supply of sound-producing air to the chamber b and the horn a is controlled by a valve actuated by a cam u. Non - return valves p are included between the valves m and the pipe h.
Patent GB-760793-A (GB)
Title: Improvements in or relating to means for rigidly coupling the component parts of metal frameworks for buildings
IPC: E04B1/58
Filed: 1952-11-22
Abstract: 760,793. Joining structural metal members. COOKE BROS. Oct. 26, 1953 [Nov. 22, 1952], No. 29579/52. Class 20(2) An I-section knee 5 has seatings at both ends for I-section beams 6 to which it is bolted. The seatings are formed by extensions 9 of the flange 7 of the knee, and the beams are bolted to these extensions and plates 14 on the other side are bolted to the knee and the beams. The webs of the beams and knee are connected by pairs of fish plates 17.
Patent GB-1116431-A (GB)
Title: Agricultural tractor having a power lifting installation
IPC: A01B67/00
Filed: 1965-07-13
Abstract: 1,116,431. Tractor power lift mechanisms. KLÍCKNER-HUMBOLDT-DEUTZ A.G. 13 July, 1965 [18 Sept., 1964], No. 29642/65. Heading A1P. Draft control signals originating in a rod 16 of a tractor power lift mechanism and operating a main control valve 26 are modified by signals derived from the velocity of the tractor. A shaft 4 driven by the axle 5 of the tractor drives a pump 2 supplying hydraulic fluid to a cylinder 9 to move a spring biased piston 10 operating a lever 14 which forms part of the lever connection between the rod 16 and the control valve 26. The pressures obtainable in the cylinder 9 are variable by means of a throttle valve 11 connected to the sump 6. In an embodiment the pressure of fluid in a cylinder is influenced both by the draft control rod (in the form of a piston) and by the pressure fluid from the pump 2 to operate the main control valve. In a further embodiment the sensitivity of the velocity control is adjustable.
Patent GB-1308552-A (GB)
Title: Programmed thermostat systems
IPC: G05D23/275
Filed: 1970-06-18
Abstract: 1308552 Automatic temperature control HONEYWELL Inc 18 June 1970 [8 Sept 1969 25 Sept 1969] 29707/70 Heading G3R In a central heating system having a thermostat unit in the space the temperature of which is to be controlled in which unit an A. C. motor driven clock operates a cam to select the control point for a thermostat switch during different time periods, a single pair of wires only connects the unit to the remainder of the system and carries both the A. C. supply to the motor and the control current from the thermostat to actuate a valve on the gas supply to a boiler. In Fig. 1 when the thermostat switch 21 closes on a call for heat, half-wave D. C. passes through a diode 35 and anticipatory heater 35 and is superimposed on the symmetrical A. C. flowing through a relay coil 33 to the clock motor 22 thereby closing the relay contacts to energize gas valve 32. The motor current only is insufficient to operate the relay. In a further embodiment Fig. 2, the clock motor is normally supplied with A. C. via capacitors 75, 77, the capacitor 77 blocking D. C. through relay coil 73. On a call for heat the thermostat switch 61 shorts C77 and half-wave D. C. is passed by diode 78 is smoothed by C80 and energizes the relay. In a further embodiment Fig. 3 (not shown) the motor draws lagging current via a diode and transistor alternately. When the thermostat switch closes, it connects a capacitor and anticipatory heater across the wire pair changing the phase relationship of current to voltage e.g. to unity or leading p.f. This results in an S. C. R. in series with the relay coil firing at the beginning of each positive half-cycle to energize the relay and being maintained conductive during the next half-cycle by the charge in a capacitor in parallel with the relay coil.
Patent GB-1199762-A (GB)
Title: Improvements relating to Switching Arrangements
Inventor: MURRAY LAWRENCE JOHN
IPC: H04Q3/00
Filed: 1967-06-28
Abstract: 1,199,762. Automatic exchange systems. AUTOMATIC TELEPHONE & ELECTRIC CO. Ltd. 27 June, 1968 [28 June, 1967], No. 29921/67. Heading H4K. A group selector comprises three stages A, B and C, the switches of each stage being identical relay crosspoint matrices, the number of A-B links being the same as the number of B-C links, the matrices of the B-stage having as many inlets as outlets, the outlets of each C-stage matrix being distributed one to each of a numerically distinct group, the C-stage matrices being arranged in sets there being as many matrices in a set as there are outlets from a B-stage matrix and each set providing access to all the outlets of a pair of B-stage matrices, the outlets of one B-stage matrix being linked to the first inlets of the C-stage matrix set while the outlets of the other B- stage matrix are linked to the second inlets of the C-stage matrix set. Two arrangements are described in which 48 access circuit inlets are given full access to groups of 20 outlets in each of 10 levels. In one arrangement the 48 inlets are divided in two groups of 24, each such group being distributed by way of 4, 6 x 10 A matrices to 10, 4 x 4 B matrices. Corresponding ones of the two sets of 10 B matrices are paired with their outlets linked to respective first and second inlets of respective sets of 4 out of 40, 2 x 5 C matrices. The twenty outlets of each set of four C matrices are distributed two to each of ten numerical outlet levels. For selectors having 96 or 192 access circuit inlets a corresponding number of 48 inlet groups may be employed, the C matrices each having 4 or 8 inlets respectively. In the other arrangement the 48 inlets are distributed as a whole over 8, 6 x 10 A matrices to 10, 8 x 8 B matrices. The B matrices are divided into two sets of five, corresponding pairs of which have their outlets linked to a set of 8, 2 x 5 C matrices there being five such sets in a rank of 40. The 40 outlets of each set of 8 C matrices are distributed 4 to each of the 10 numerical outlet levels. The outlet capacity may be doubled by using 2 x 10 C matrices. The arrangements. achieve the same function as the group selector described in Specification 1,131,367 but do so with substantially fewer crosspoint relays.
Patent GB-737679-A (GB)
Title: Improvements relating to hypodermic syringes
Inventor: EVERETT SAMUEL JAMES
IPC: A61M5/31
Filed: 1952-11-26
Abstract: 737,679. Hypodermic syringes. EVERETT & CO., Ltd., S & R. J. Jan. 21, 1954 [Nov. 26, 1952], No. 29976/52. Class 81 (2). In the case of a syringe comprising a barrel and a uniform cylindrical plunger, flexible, inwardly-directed annular lips are provided near the outer end of the bore of the barrel to ensure liquid-tightness. The lips engage the plunger around the whole of its circumference. Preferably the syringe barrel 1 is made of transparent flexible synthetic resin and the lips 11 are undercut to provide forwardly directed knife edges which engage around the plunger and provide a tight fit.
Patent GB-1354966-A (GB)
Title: Combination of tubular sections and couplings for joining the  sections and couplings for joining the sections together
IPC: F16B12/40
Filed: 1971-06-28
Abstract: 1354966 Furniture joints J. LAHET 28 June 1971 [26 June 1970] 30119/71 Heading F2M Two tubular sections P, P<SP>1</SP> are joined at right angles by two coupling units R, R<SP>1</SP>, each coupling unit comprising four external lateral walls M2, M<SP>1</SP>2, M3, M<SP>1</SP>3, and an internal cross having three mutually perpendicular intersecting threaded bores 1, 2, 3. Unit R is placed in the upper end of section P so that its bore 2 is aligned with an aperture P1 in the section, unit R<SP>1</SP> is placed against section P so that its bore 1 is aligned with aperture P1, and a screw V is inserted through bore 1 and aperture P1 and threaded into bore 2. Coupling unit R<SP>1</SP> is then placed in the end of section P<SP>1</SP> so that its bore 3 is aligned with an aperture P1<SP>1</SP> in the section, and a screw v is inserted through aperture P1<SP>1</SP> and threaded into bore 3. Both ends of bores 2, 3 and at least one end of bore 1 are countersunk, and bore 1 has a larger diameter than bores 2, 3. The axial bore 1 may have an extension S for the screw of a jack (W, Fig. 6, not shown) for forming a foot.
Patent GB-1041967-A (GB)
Title: Electrodeposition of alkali metals from nonaqueous solvents and electrochemical cells containing solutions of alkali metals in nonaqueous solvents as electrolyte
IPC: B01J19/08
Filed: 1965-07-15
Abstract: In electrodepositing sodium or lithium, the electrolytic bath comprises a solution in liquid sulphur dioxide of a tetrachloro- or tetrabromoaluminate of the corresponding alkali metal, preferably in an amount sufficient to provide a conductivity of at least 5 X 10-5 ohm-1 cm-1 at 22 DEG C.  Typically the electrolysis is effected in a cell of glass, polythene, polypropylene or PTFE under an inert atmosphere of argon xeonon or helium at atmospheric pressure with a bath temperature of -10 to -30 DEG C. or under pressure at a temperature below the critical temperature of SO2 whereby sodium may be obtained in molten form.  Any non-reactive conductive material may be used as cathode while the anode may be of sodium or lithium as appropriate alone or coated on conductive support or an amalgam. Propylene carbonate or tetrabutyl ammonium perchlorate is included in the electrolyte in comparison test runs but neither assists plating efficiency.  Reference is made to the known prior use of a solution in propylene carbonate of lithium salts for electrodepositing lithium and to attempts to deposit potassium and sodium from solution of their iodides or bromides in sulphur dioxide.
Patent GB-837139-A (GB)
Title: Improvements relating to apparatus for smoothing floors
IPC: E04F21/24
Filed: 1957-09-26
Abstract: 837,139. Floor smoothing apparatus. GRUB, R. Sept. 26, 1957, No. 30267/57. Class 107. Unset cement or asphaltic floors are smoothed by disc tools rotatable about a vertical axis and having rib-like formations with a negative rake on the bottom working edges. The flooring material is thus spread and smoothed. As shown the formations 2 are arranged at an angle to the radius of the disc, the angle being selected in accordance with the material being worked. The ribs are made of flexible steel and may be of curved formation. A composite tool with inserted cutters is disclosed.
Patent GB-640147-A (GB)
Title: Improvements in or relating to target detection systems
IPC: G01S13/44
Filed: 1946-10-10
Abstract: 640,147. Radio direction-finding. SADIRCARPENTIER. Oct. 10, 1946, No. 30321. Convention date, Nov. 7, 1945. [Class 40 (vii)] In a target detecting system in which electrical pulses transmitted to a target and reflected therefrom are received by a continuously variable directional receiving device means are provided for deriving from the received reflected pulses a signal which becomes of zero or negligibly small value when the orientation of the receiving device agrees with the direction of the reflecting target. In one embodiment the receiving device comprises two directional aerials 3, 4, Fig. 4, having directional characteristics (as shown in Fig. 5) disposed at a small angle relatively to one another and moving together as a unit, the aerials feeding similar receivers 5, 6, the outputs from which (a and b, Fig. 6) when combined in opposition in a circuit 7, provide an auxiliary series of pulses (d, Fig. 6) which is combined with one of the original series (e.g. that supplied by receiver 5) in an anti-coincidence circuit 8 the latter circuit being arranged only to allow the passage to the cathode-ray tube indicator of a pulse (e, Fig. 6) of the original series when the corresponding pulse of the auxiliary series is of zero or negligibly small amplitude. In a further embodiment the directional aerials are mounted as a structural unit such that one aerial has substantially zero response in the direction of the axis of the other, the signals from each aerial being combined in an anticoincidence circuit which is arranged to supply a pulse to the cathode-ray indicator tube when the response of one aerial is substantially zero. An arrangement employing a single directional aerial and a single receiver together with a delay line introducing a delay equal to the interval between the transmission of successive pulses, the output of the delay line being equivalent to the output of the second receiver in the other embodiments, is described with reference to Fig. 7 (not shown).
Patent GB-410410-A (GB)
Title: Improvements in and relating to terminal connectors and insulators for the leading-in conductors for the electrodes of metal vapour rectifiers
IPC: H01J13/16
Filed: 1933-11-01
Abstract: 410,410. Metal-vapour rectifiers. SIEMENS - SCHUCKERTWERKE AKT.-GES., Siemensstadt, Berlin. Nov. 1, 1933, No. 30395. Convention date, Nov. 1, 1932. [Class 39 (i).] A metallic anode cap of a metal. vapour rectifier has one or more insulators constituting carriers for the current conductors of the auxiliary and control electrodes of the rectifier. In the arrangement shown, the anode lead 1 carries a metallic cap 2 which is cemented to the anode arm 3. A tube 4 of insulating material, such as porcelain, is cemented or fused into the anode cap 2 and carries a metal tube 5 through which the current conductor 6 of the grid 7 extends. The grid 7 is carried by a frame 10 clamped to an insulating tube 12, preferably of quartz, which slides over the stem 13 and extends into an annular recess in the anode 9. The terminal connector 14 may carry connecting leads to external starting devices &c., in addition to the main current t conductors for the auxiliary and control electrodes. The space inside the anode cap is filled with glass wool. The insulator 4 may be provided with ribs, collars or domes for high potentials.
Patent GB-912964-A (GB)
Title: A process for the production of triallylic isocyanurates
IPC: C07D/
Filed: 1961-08-23
Abstract: Tri-allylic isocyanurates are obtained by reacting a cyanuric acid salt with an allylic halide at elevated temperature in an NN di C1-5 alkyl formamide medium.  The salts are obtained from cyanuric acid and inorganic or organic bases.  Specified halides are allyl and methallyl chloride and bromide, 1-bromo-butene-2, and 1-chloropentene-2, whilst a temperature of 60 DEG  to 150 DEG C. is preferred.
Patent GB-700762-A (GB)
Title: Improvements in or relating to electromagnetic devices
Inventor: ADDISON GEORGE MURISON
IPC: G01N27/90
Filed: 1950-12-13
Abstract: 700,762. Electromagnets. ROLLS-ROYCE, Ltd. Nov. 5, 1951 fDec. 13, 1950]. No. 30479/50. Class 35. [Also in Group XXXVI] Testing equipment to detect flaws in magnetic material comprises a bar 10 of magnetic material carrying an energizing coil 11 and pole-pieces 12 each comprising 36 rods 26a partly received rubber block 30. The rods 26a are of square section and they are by a housing also accommodating a arranged to form a square sectioned pole-core 26 to slide (en masse) in and out of the housing. The outward travel of the polecore 26 is restricted by three piano wires 28 passing through slots 27 formed by registering channels in abutting surfaces of the rods. The ends of the wires 28 are soldered in ferrules 29 by the side plates 25c of the housing.
Patent GB-1274541-A (GB)
Title: A device for delayed operation of a utiliser system
IPC: H01H43/30
Filed: 1969-06-17
Abstract: 1,274,541. Switching systems for consuming apparatus. PROJECTEURS CIBIE. 17 June, 1969 [19 June, 1968], No. 30645/69. Heading H2H. [Also in Division H1] In a thermal time-delay and relay system for delayed operation of a device U after closure of manual switch K, current is first applied only to a heater R of a bimetal 2 through normally closed contacts C 1 , C 2  of the non-energized magnetic relay B. On delayed heating of the bimetal 2, a snap-action spring 3 and compensating bimetal 4 snap over to engage contact 10b of the thermal relay with contact C 6 . Magnetic relay B is thereby energized cutting off the current to heater R, relay B being maintained energized by its holding circuit contacts C 2 , C 3 . On cooling of bimetal 2, the snap system, 2, 3, 4 re-engages contacts 10b, C 4  of the thermal delay switch so that the circuit to the device U is now complete. Operation of the device U is therefor delayed until after the bimetal U has been first heated and then cooled.
Patent GB-1147222-A (GB)
Title: Reinforced sheet material
Inventor: HEBBERLING FRIEDRICH
Filed: 1966-01-12
Abstract: 1,147,222. Reinforced laminates. F. HEBBERLING. 12 Jan., 1966, No. 30752/68. Divided out of 1,147,221. Heading B5N. [Also in Division D1] The subject-matter of this Specification is included in that described in Specification 1,147,221, but the claims relate to a laminated web material bonded together with an array of reinforcing strands between them, the array comprising four sets of strands in an undulating pattern, the undulations in each set being out of phase with those in each other set.
Patent GB-392192-A (GB)
Title: Improvements in and relating to flow meters
IPC: G01F1/37
Filed: 1931-11-06
Abstract: 392,192. Flow meters. BAILEY METER CO., 1050, Ivanhoe Road, Cleveland, Ohio, U.S.A. Nov. 6, 1931, No. 30797. Convention date, Nov. 7, 1930. [Class 69 (i).] In a differentialpressure orifice flow meter, for all flow rates above a given value, the orifice area is a maximum, and for all rates below another given value is a minimum. In the form shown, a plate 5 projecting into a conduit 2 is carried by a stem 7 having a head 10 movable between adjustable stops 11, 12. A differential pressure gauge operates a rod 30 carrying adjustable stops 31, 32 adapted to operate a pilot valve 23 for controlling the distribution of pressure fluid in a cylinder 9.
Patent GB-379912-A (GB)
Title: Improvements in cutting-off mechanism for continuous-rod cigarette-making machines
IPC: A24C5/28
Filed: 1931-11-06
Abstract: 379,912. Cigarette-making machines. TRIGGS, W. W., 57, Lincoln's Inn Fields, London.-(American Machine & Foundry Co. ; 511, 5th Avenue, New York, U.S.A.) Nov. 6, 1931, No. 30841. [Class 130.] In cutting-off mechanism for continuous rod machines the blade 9 is held frictionally between a collar 19 and a resilient radially-slotted washer 17, the flat peripheral surface of the washer being pressed against the blade by a nut 20.