baber/WOPTO huggingface dataset:
Patent GB-1246835-A (GB)
Title: A carburetor for an internal combustion engines
IPC: F02M3/045
Filed: 1968-10-29
Abstract: 1,246,835. Spray carburettors. NISSAN MOTOR CO. Ltd. Oct.29, 1968 [Nov.9, 1967], No.51152/68. Heading F1B. A system for shutting off the supply of liquid fuel to the choke 16 of a variable choke type carburetter of an automobile internal combustion engine during over-running operation comprises a shut-off valve 20 which closes the fuel supply passage 17 in response to the increased vacuum in the intake manifold 31 resulting from overrunning. The valve 20 is controlled by a solenoid 21 which is arranged so that a spring holds the valve open when the engine is driving the vehicle. When the accelerator pedal is closed, however, a switch 22 linked to the pedal also closes, together with a vacuum switch 24 operated by a diaphragm 28 in response to the increased manifold vacuum communicated through pipe 32. Thus the solenoid 21 is connected to an electric power source 26, causing valve 20 to close and cut off the fuel supply to choke 16. Fuel consumption and atmospheric pollution are therefore reduced. The electric circuit of the solenoid 21 includes ignition switch 25 and a switch 23 which opens whenever the clutch pedal is depressed. A screw 35 permits the force of a spring 33 acting on diaphragm 28 of vacuum switch 24 to be adjusted. Switches 22, 23 may be dispensed with.
Patent GB-1451967-A (GB)
Title: Touch responsive switching circuit
IPC: G04G99/00
Filed: 1973-11-05
Abstract: 1451967 Touch operated switching systems COMPAGNIE INDUSTRIELLE RADIOELECTRIQUE 5 Nov 1973 [9 March 1973] 51270/73 Heading G1N In a touch operated switching system the system is triggered by the resistance of a finger when it bridges a pair of coaxially arranged conductors. A cylindrical conducting ring is force fitted in an aperture of a grounded plate and a central conducting pin is arranged coaxially therein in a ring of insulating material with its top surface flush with that of the ring. The pin is connected to the junction of a pair of resistors connected in series between a bias supply and the base of a first transistor so that when a finger bridges the conductors the voltage at the base of the first transistor, of a Darlington pair, falls. The Darlington pair is then blocked and triggers a monostable circuit to its opposite state which returns to its original state when the finger is removed. Instead of a monostable circuit a bi-stable circuit may be used. The central pin may be in the form of a sign or number.
Patent GB-1125788-A (GB)
Title: Improved hydraulic suspension device
IPC: B60G17/033
Filed: 1965-12-03
Abstract: 1,125,788. Telescopic hydraulic dampers. BEFORS A.B. 3 Dec., 1965 [4 Dec., 1964], No. 51485/65. Heading F2S. [Also in Divisions B7 and G3] A motor vehicle hydraulic suspension device comprises an hydraulic cylinder mechanically connected between a running wheel and the vehicle and hydraulically connected to an hydraulic accumulator through a throttling valve which has a lesser damping effect in the fluid flow toward the accumulator than in the reverse direction; control means for regulating flow of hydraulic fluid into and out of the hydraulic cylinder so as to vary the height of the suspension and means for supplying the throttling valve with a cooling fluid. The vehicle may be an endless track vehicle, over the running wheels of which the endless track passes, and may carry a gun, the elevation of which is determined by controlling the running wheel suspension heights. The throttling valve is described in Specification 1,117,634. A suspension system for vehicle wheels 4, 5, 15, 16 comprises bell-crank suspension arms 9, 12, 19, 20 to which are connected hydraulic cylinders 10, 13, 21, 22, each of which is connected to an hydraulic accumulator 11, 14, 23, 24, respectively, through a damper or throttling valve 41, 42, 43, 44. The accumulators 11, 14, 23 and 24 which are also described in 44, Specification 1,117,634, function as hydraulic springs for the absorption of road shocks. The hydraulic circuit includes a connection 25, 26, 31 or 32 from the throttling valves to variable displacement, reversible pumps 29 and 34, as shown, with pressure relief valves 27 and 33 being provided on a fluid reservoir 28. A pump 66 supplies fluid from the reservoir 28 to the system through a valve 37 from which a return line for discharging fluid is also provided. Non-return valves 30 and 35 are provided in the line 38 connecting valve 37 with lines 26 and 32. Stop valves 45, 46, 47 and 48 control the height of the respective suspension members and are operated by fluid pressure under the control of electromagnetically operated valves 49, 50, 51 and 52 which also supply cooling fluid to the damper valves. The valves 49 to 52 may be operated individually or jointly to regulate the vehicle height or to change the vehicle inclination. In the latter operation, the pumps 29 and 34 transfer fluid from the cylinders 13 and 22 to the cylinders 10 and 21 or vice versa. The suspension of the front wheels 4 and 15 are inter-connected through pipes 25 and 31 to equalize road shocks between the front wheels but interconnection of the rear suspensions is prevented by non-return valves 30 and 35. Changes in track tension during changing of vehicle elevation is prevented by supplying or withdrawing fluid through valve 37.
Patent GB-1176734-A (GB)
Title: Adhesive Application.
IPC: B31B50/62
Filed: 1967-03-15
Abstract: 1,176,734. Coating apparatus. PHILIP MORRIS Inc. 15 March, 1967 [28 July, 1966], No. 51560/67. Divided out of 1,176,733. Heading B2L. An adhesive applicator comprises an adhesive discharge nozzle 42, a pump for delivering adhesive under pressure to the discharge nozzle, a valve 80 for controlling the discharge of adhesive from the discharge nozzle, and a piston 79 connected to the valve and adapted to be subjected to adhesive supplied from the pump to open the valve and allow discharge of adhesive from the nozzle. Adhesive is fed into hopper 70 and is melted therein by suitable heaters and maintained at constant temperature. The molten adhesive feeds into chamber 75 and thence to valve chamber 77 through screens 75a and 78, the outlet passage 83 being normally closed by valve 80 under the action of spring 84. When adhesive is to be applied, air pressure is admitted through pipe 100 into the upper end of cylinder 90 by means of a cam switch and solenoid arrangement (not shown) and pipe 101 is opened to exhaust thus causing plunger 92 to move down so that its lower end enters the cylinder area 102 forcing adhesive down into chamber 77 where it operates on the differential piston 79 to lift valve member 80 so that adhesive can flow out of nozzle 42. To stop the flow of adhesive pipe 100 is opened to exhaust and pipe 101 is connected to the air pressure thus lifting plunger 92 to release the pressure in chamber 77 so that spring 84 returns the valve 80 to its seat.
Patent GB-1171907-A (GB)
Title: Improvements in and relating to Roller Vane Pumps.
Inventor: DICKINSON RONALD SIDNEY
IPC: F04C2/344
Filed: 1965-12-07
Abstract: 1,171,907. Rotary pumps. ARMSTRONG PATENTS CO. Ltd. Dec.7, 1966 [Dec.7, 1965] No.51740/65. Heading F1F. A roller vane pump comprises a rotor 34, Fig. 2, having a plurality of blades 36 defining pumping chambers 38 each co-operable with a roller vane 40, a cam-ring 44 within which the rotor is rotatably and eccentrically mounted and plate members 26, 30, Fig. 1 between which the rotor is sandwiched. Liquid is drawn into the pumping chambers through an inlet connection 43, in a cover 14 and an annular recess 46 and arcuate inlet ports 50, 52 in the plate member 30 and is discharged from the chambers through arcuate ports 56, 58 in the plate member 26 to a chamber 54 behind that member. The chamber 54 is connected to a discharge connection 68, Fig. 3, in the pump body 12 via a passage 62, a valve chamber 60 and a passage 64 having a restriction 66. To allow free running of the rotor without undue leakage the width of cam-ring 44 is made slightly greater than that of the rotor 34. A radial slot 27 on the inner face of each plate member communicates with the pumping chambers 38 opens into annular chambers 74, 76 which communicate with axially-extending grooves 70, 72 in the plate members to cool and lubricate the bearings. The slots 27 also promptly remove pressure from the pumping chambers to reduce noise. Replacement of internal parts is facilitated by the removability of the cover 14. To maintain the quantity and pressure of liquid discharged by the pump substantially constant a spool valve 86 is subjected on one end to pump discharge pressure and on its other end to throttled discharge pressure and the loading of a spring 94. A loose-ball relief valve 106 relieves excessive pump-pressure and instantly reduces pressure on the left-hand end of the valve spool to permit leftward movement of the latter to unload the pump.
Patent GB-1215303-A (GB)
Title: Apparatus for measuring o2 concentrations in gases
Inventor: TRISCHMANN WOLFGANG
IPC: G01N27/74
Filed: 1967-11-14
Abstract: 1,215,303. Thermo-magnetic oxygen detectors. KOMBINAT MESS-UND REGELUNGSTECHNIK DESSAU VEB. Nov. 14, 1967, No.51750/67. Heading G1N. In a thermo-magnetic oxygen detector, to compensate for the effects of the carrier gas, the gas mixture is passed through a similar U-shaped detector cell without magnets and a resultant signal is derived as a ratio of the signals from the two detectors. The absolute pressure of the gas feed is controlled, and a differential pressure regulator is connected across the arms of the U-tubes. The apparatus is enclosed in a thermostatically controlled housing.
Patent GB-517762-A (GB)
Abstract: 517,762. Earthing conductors. LIVERPOOL ELECTRIC CABLE CO., Ltd., and MILNER, R. F. D. March 29, 1938, No. 9566. [Class 36] An earthing conductor comprises a stranded conductor coated or covered with a thin sheathing of lead or other chemically inert metal sufficient to prevent corrosion of the stranded conductor and to provide visible evidence if a fracture has occurred. The lead may be applied directly on to the conductor, or the conductor may be coated with tin prior to the application of the lead. A flux may be applied to the tinned conductor before the application of the lead, so that the sheath becomes united. with the conductor. The sheathing may be provided with means for securing the conductor in place, e.g., with a protuberance through which securing means such as a nail or screw may pass.
Patent GB-1276630-A (GB)
Title: Machine tool
IPC: B23Q5/26
Filed: 1970-10-30
Abstract: 1276630 Gauging; tool mounts; tool-holding rigs LA SALLE MACHINE TOOL Inc 30 Oct 1970 [16 March 1970] 51808/70 Headings B3B and B3T. A device includes means for moving a cutting tool 12, such as a boring or turning tool, relative to the work 14 to compensate various effects on the tool, the means including a plunger 24, a piston 36 movably mounted laterally of the plunger and having a ramp surface 38 for cooperation with the plunger, and fluid supply means for moving the piston. The tool 12 is mounted in block 13 which is attached to a split holder 16 which can flex at its bight. A screw 26 in the deflectable portion 20 of holder 16 pre-loads the plunger. The fluid supply means includes a valve 54 and metering device 58, both operative in response to a gauging device (not shown) which gauges workpieces 14 which have been machined. Dependent upon the signal from the gauging device, the valve 54 is set to direct fluid to one or other side of piston 36 and metering device 58 is set to admit a predetermined volume of fluid to the valve. Means are provided to allow resetting of piston 36 after replacement of tool 12.
Patent GB-1435933-A (GB)
Title: Hydrostatic transmission drive system
IPC: B60T13/22
Filed: 1973-04-18
Abstract: 1435933 Hydrostatic transmission control BATON CORP 18 April 1973 [28 April 1972] 51969/75 Divided out of 1435932 Heading F2W The subject-matter of this Specification is identical with that described in Specification 1,435,932, but the claims are directed to the pump and motor displacement follow-up servomotor control system.
Patent GB-1529067-A (GB)
Title: Miniature lamps
IPC: H01K1/46
Filed: 1975-12-19
Abstract: 1529067 Incandescent lamps GENERAL ELECTRIC CO 19 Dec 1975 [2 Jan 1975] 52133/75 Heading H1F The side lead wire 6 of a tungsten filament lamp is flattened at a portion 16 to be connected to a metal base shell 10 having an inturned rim 15 and is adhesively bonded thereto with an electrically conductive cement 14b, the other lead wire 7 having an insulating coating 17. The cement 14b comprises a heatcurable organic polymer binder with a finely divided dispersed conductive solid. As shown, the envelope 1 of the lamp is secured to the base shell 10 with a ring of electrically insulating cement 14a applied prior to applying a ring of conductive cement 14b.
Patent GB-1366527-A (GB)
Title: Integrated circuit with substrate containing selectively formed regions of different resistivities
IPC: H01L23/535
Filed: 1971-11-10
Abstract: 1366527 MOS integrated circuits STANDARD MICROSYSTEMS CORP 10 Nov 1971 [30 April 1971] 52182/71 Heading H1K In a monolithic integrated circuit comprising a substrate of one conductivity type formation of undesired conductive channels between the opposite conductivity type source and drain regions 64, 66 (Fig. 1e) of a MOSFET disposed on one mesa and regions 68, 70 of the opposite conductivity type on other mesas due to the voltage on conductive tracks, e.g. 74 on the passivating layer 72 is prevented by more heavily doping the surface region of the substrate between the mesas. In the illustrated structure the mesas are first formed on a P- substrate by selective oxidation and etching out or by etching the silicon directly through a nitride mask. A P+ surface region is next formed except on the mesa tops by diffusion through the same masking, and then donor impurity is diffused in to form regions 64-70, a gate structure and source and drain electrodes for the MOSFET provided and oxide 12 deposited to underlie the conductive tracks 74 &c. Isolation and HF performance can be further improved by reverse biasing the junctions between the N+ zones and the substrate.
Patent GB-1321750-A (GB)
Title: Videophone system
IPC: H04N7/56
Filed: 1971-11-10
Abstract: 1321750 Television PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 10 Nov 1971 [13 Nov 1970] 52250/71 Heading H4F An arrangement for transmitting television signals over telephone cables employs analogue representation of the video signals, and digital representation for synchronizing signals which include clock pulses transmitted in "line" periods during a part of the field flyback (to allow a setting-up of synchronization), and a field synchronizing code word recognized at the receiver. As described (Fig. 1) a clock 10 at the transmitter of a video phone T-R unit operates at 1À04 MHz and its output is passed to unit 11 which includes frequency-dividing and logic circuits and generates the necessary timing signals, and also provides on line AA 520 KHz pulses during part of line flyback. At the receiver (Fig. 2) the clock pulses gated at 14, 15 adjust the phase of the clock oscillator 39 through a phase-comparator 36 and feedback loop, and this oscillator supplies a unit 18 generally similar to 11. In order to obtain synchronism on a frame basis, code word detector 19 provides signals representing the recognition of code words generated at 12 once in each field, and this resets the counter in 18. When synchronism is achieved, as recognized at 20 by the coincidence of an I pulse from 18 with a field code signal from 19 a minimum number of times then a SYNC sets up the switching of the various functional components and inverted signal ACQU1 disconnects the clock pulse synchronizing arrangement except during the appropriate parts of the line flyback periods. It is stated that clock pulse synchronizing signals may be sent only during alternate line flybacks, to enable colour-burst signals to be sent in the other flyback periods in the case of colour systems. Specification 1,321,749 is referred to.
Patent GB-523171-A (GB)
Abstract: 523,171. Current and power measurements. LINCOLN, P. M. Dec. 24, 1938, No. 37564. [Class 37] [Also in Group XIII] In a thermal meter means are provided to control the radiation and convection of heat and to ensure that the rate of heat exchange per degree of temperature difference between the heater and the thermally sensitive element is uniform. Two similar elements are connected so that their heaters are traversed by currents proportional to the sum and difference of the current and voltage of the circuit, the elements acting differentially on an indicator so as to measure power. Reservoirs 1 for containing an expansible fluid are formed of steel tube with a rounded end 2 and closed by a re-entrant head 3 so that the cylindrical surface is large compared with the volume. Alternatively both ends may be closed by re-entrant heads. Each reservoir is provided with a capillary tube 4 connected to a Bourdon tube 5, these tubes being connected to act differentially on a pointer 7. Each reservoir 1 is inserted into one end of a vulcanized fibre tube 8 around which is bent a heater 9 of metal sheet. Each heater has a slot 10, Fig. 3, in the centre of its width, and thin sheet copper conductor strips 11, 12 are secured to'the bifurcated ends. These strips may overlap and be separated by a thin insulating layer. Each heater is surrounded by a covering 14 of synthetic resin. A sleeve 15 of copper or other metal of high heat conductivity may surround the insulating cover so as to encircle the heater 9 and extend over the connecting ends of the copper conductors, thus acting as a distributer to equalize the heat at different parts of the heater and also conducting outwardly radiated or conducted heat from the heater to the conductor strip. Each unit is surrounded by a vacuum jacket, 16. For polyphase measurements each reservoir is provided with two or more heaters.
Patent GB-1213175-A (GB)
Title: Hydrocyanation of olefins
IPC: C07C255/07
Filed: 1968-11-06
Abstract: 1,213,175. Production and isomerization of nitriles. E. I. DU PONT DE NEMOURS & CO. 6 Nov., 1968 [6 Nov., 1967], No. 52560/68. Heading C2C. Nitriles are obtained by reacting an unsaturated organic compound having olefinic carbon-carbon unsaturation and containing from 2 to 20 carbon atoms with hydrogen cyanide in the presence of, as catalyst, a compound of formula (M<SP>1</SP>Z 3 ) n RnX m , wherein n is 2, 3 or 4, m is 0, 1, 2 or 3 and the sum of m and n is 4 or 5, X is halide or cyanide group, M<SP>1</SP> is P 1 As or Sb, Z is OR or R and R is an alkyl radical or aryl radical having up to 18 carbon atoms. Suitable starting materials are obtained by isomerizing 3 - pentenenitriles to 4 - pentenenitriles by contacting them with a catalyst which is a compound of iron or ruthenium in which the iron or ruthenium has a valence of +2 or less. Both reactions may be effected at a temperature of - 25‹ to +200‹ C. in the presence of a solvent. The hydrocyanation reaction may be effected in the presence of a catalyst promoter and an excess of a ligand, e.g. an aryl phosphite or phosphine, may be added; suitable starting materials for the hydrocyanation reaction are monoolefins such as ethylene, propylene, butene- 1, pentene-2 and hexene-2, diolefins such as butadiene, and substituted monoolefins such as styrene, α-methylstyrene, 3-pentenenitriles, 4- pentenenitriles and 2-methyl-3-butenenitriles.
Patent GB-1292523-A (GB)
Title: Electronic elevator speed control
IPC: B66B1/16
Filed: 1970-11-05
Abstract: 1292523 Automatic control of speed WESTINGHOUSE ELECTRIC CORP 5 Nov 1970 [25 Nov 1969] 52628/70 Heading G3R [Also in Division B8] A lift car is operated at a lower maximum speed and a lower deceleration for movement between adjacent floors, or at a higher maximum speed and deceleration otherwise. A power modulator receives a voltage developed across capacitor 67 representing the desired speed, and sums it in opposition to a signal, derived from the back e.m.f. of the motor Mo, energising the generator field GF2 of a Ward-Leonard drive to keep the signals matched. When lift operation is initiated, capacitor 67 charges via R1 and R2 whose setting determines the acceleration, towards a high voltage A-B giving a linear charge characteristic. For movement between adjacent landings, contacts OF2 remain closed, so that the voltage across 67 is clamped, via diode D2 at C-B, and contacts OF3 remain open, so that, upon initiation of deceleration, 67 discharges via R11 in addition to R12 and R10. Otherwise, 67 charges to a clamped voltage D-13, and discharges via R10 and R12. Operation When an operator handle in the car is moved to the "up" position, contacts (UR5) Fig.2 (not shown) close, and, contacts (N6) being closed whenever the motor runs, initiate operation of the timer, charging of capacitor 67 commencing via contacts 55-1 and GR9, towards a voltage C-B. If the handle is not returned to the centre position before the timer operates, contacts OF2 open, the relay OF having been energised, before the voltage C-B is attained, the capacitor 67 charging to D-B corresponding to the lift maximum speed. Deceleration is initiated when the induction relay 2L mounted on the lift, and energised, but not operated when the handle reverts to the central position, operates when it passes an induction plate P3 to complete a magnetic circuit, causing discharge of capacitor 67, via R10 and R12 as well as R11 if relay OF has not operated, to a voltage B-F corresponding to a uniform slow lift speed. When the landing induction relay 1L passes plate P2 close to a landing, contacts 22-1 open, so that capacitor 67 discharges further to a value F-B, and the doors begin to open. Passage of the relay 1L past the plate P1 stops the lift. A relay 55, energized during normal operation is de-energized if lift speed rises excessively, causing contacts 55-1 to open, and contacts 55-2 to close, reducing the voltage across capacitor 67 to J-B, allowing further motion at reduced speed. Voltage regulation Resistor R13 in series with Zener diode Z1 ensures that, upon rise in voltage of the mains supply, the voltage across capacitor 67 is increased just enough to keep the motor speed the same, allowing for the increase in its field strength. The control system may be used in automatic lifts. For downward movement, plates P4 initiate operation of relay 2L.
Patent GB-1448708-A (GB)
Title: Dental throughflow heater
IPC: G05D23/24
Filed: 1973-11-13
Abstract: 1448708 Thermostatically controlled flow heaters SIEMENS AG 13 Nov 1973 [14 Nov 1972] 52723/73 Heading H5H [Also in Divisions A5-A6 and G2-G3] A dental throughflow heater, suitable for heating fluid to be supplied to a patient's mouth, comprises a housing 1 defining a chamber 4 for the fluid and connected to inlet and outlet passages, a heating element 2 consisting of a semiconductor device with a control electrode, e.g. a power transistor, the device being contained in a recess in the housing in good thermal conducting relation therewith, and a thermosensitive control element 7, e.g. a P.T.C. resistor, also in good thermal conducting relation with the housing, for controlling the current through the semiconductor device and hence regulating the temperature of the fluid. The housing contains a filter 10 which is accessible by removal of a screw plug 12. Fig. 2 shows a circuit arrangement. The P.T.C. resistor 7 controls the base current of power transistor 2 in dependence on the ambient temperature of the transistor, and the collector current of the latter is limited by a resistor 15 in the collectoremitter path thereof, the potential across which controls a second transistor 16 connected so as to regulate the base current of transistor 2. A temperature responsive switch 18 and a fixed resistor 19 may be used instead of resistor 7.