baber/WOPTO huggingface dataset:
Patent GB-1212578-A (GB)
Title: Capacitor charge replacement circuit
IPC: G11C27/02
Filed: 1968-12-16
Abstract: 1,212,578. Capacitor storage arrangement. GENERAL ELECTRIC CO. 16 Dec., 1968 [4 Jan., 1968], No. 59624/68. Heading G4C. [Also in Division H3] Charge leakage from a storage capacitor for analogue or digital signals is restored by a recharging current which is a continuous function of the difference between the capacitor voltage and a corresponding step in an incrementally changing reference voltage. A charge is set into capacitor 1 by a gate 50, 51 and the resulting capacitor voltage is compared at 31, 32 with a staircase voltage of up to 100 steps applied to the base of 31. When a step nearly corresponds with the capacitor voltage the diode 34 becomes conductive to cause a charging transistor 35 to provide a charging current dependent upon the difference, until equality is reached. At the next step diode 33 conducts to prevent the charging transistor conducting again. The staircase then either continues to the top step and resets or a voltage derived from transistor 31 when it become conductive resets the staircase (Fig. 5, not shown). Resistors 46 and 47 make the comparator more sensitive. A number of storage capacitors may be restored in succession by the same staircase generator in which case the generator can reset as soon as each restoration has been achieved (Fig. 6, not shown). Alternatively a number of capacitors can be restored during one staircase if separate comparators are used (Fig. 7, not shown). The staircase wave is generated by repeatedly discharging a small capacitor 10 into a large capacitor 11. Capacitor 10 charges through resistor 18 until its voltage causes aPNP,NPN combination 12, 13 to conduct and discharge it into 11. Stepping in this manner continues until the combination 15, 16 becomes conductive to discharge capacitor 11 whereafter stepping restarts.
Patent GB-1288290-A (GB)
IPC: G05D1/08
Filed: 1969-12-09
Abstract: 1288290 Measuring pitch, roll and heading SPERRY RAND CORP 9 Dec 1969 [11 Dec 1968] 59929/69 Heading G1N In a system for deriving signals representing roll, pitch and heading of an aircraft, the roll and pitch signals are derived by pick-ups 13, 12 on a vertical gyroscope 11 mounted in the fuselage, a short-term heading signal is derived from a fluxvalve 14 stabilized in a horizontal plane by the gyroscope 11 and a long-term heading signal is derived from a second flux-valve 24 pendulously mounted at the tip of a wing or vertical stabilizer of the aircraft, the compass card 32 being positioned under the influence of both the short- and longterm heading signals. As shown in Fig.1, the output signals from the gyrostabilized flux-valve 14 are fed through a synchro differential 15 to a control transformer 16, the rotor of which is positioned by a high gain fast response servoloop 23. The output of fluxvalve 24 is applied to a control transformer 25 positioned by servoloop 23. Any error signal at the output of the control transformer 25 is removed by positioning synchro differential 15 using a low gain or slow response servoloop 26. As shown in Fig.3, a single servomotor 21 receiving error signals from an algebraic summer 36 positions control transformers 16 and 25. The servomotor 21 reacts to short-term error signals from control transformer 16 and to long-term error signals from control transformer 46. The gain of the long-term loop is about 40 times that of the short-term loop. Undesirable stop-functions in the short-term loop due to switching on or off D.C. equipment near the flux-valve 14 are neutralized by a circuit 51 to 56. The holding circuit need not be perfect, since the long-term loop will correct the errors during the gradual decay of the neutralizing signal.
Patent GB-1247540-A (GB)
Title: A connector for printed wiring boards
IPC: H01R12/71
Filed: 1968-12-17
Abstract: 1,247,540. Mounting electrical equipment. GENERAL ELECTRIC CO. 17 Dec., 1968 [26 Dec., 1967], No. 59938/68. Heading H1R. [Also in Division H2] Connector 20 for attachment to an edge of a printed circuit board 14 comprises a strip 21 of rectangular cross-section with a plurality of transverse channels 26, housing preformed spring contacts 32, with (a) hooked ends 35 yieldingly retained by recesses 33, (b) V-shaped portions 36, and (c) flat portions 38 and 40, the last passing through, and being soldered to holes 17 and hence to terminal ends 18 of wire runs 15 of the board 14, whose edge 19 is received in notch 34. A mounting device 13, attached to studs 12 of a panel 10, has a longitudinal slot 43 to receive connector 20, whose contacts 32 engage with terminals 11 on panel 10, and guide arms 44 with grooves 45 to receive side edges 46 of board 14. A retainer cap 49, held in place by clips 54, has a channel 50 which contains a wave-shaped spring and receives the outer edge of board 14.
Patent GB-1333130-A (GB)
Title: Glass melting apparatus
IPC: C03B5/14
Filed: 1971-12-29
Abstract: 1333130 Glass furnace TOKYO SHIBAURA ELECTRIC CO Ltd 29 Dec 1971 [29 Dec 1970 (3)] 60385/71 Heading F4B [Also in Division Cl] A glass-making apparatus comprises; a melting furnace, Fig. 1, having a melting chamber 1 defined by the wall of a cylindrical flue 7, side walls 2 and ceiling 3 and at least one burner 8 for directing fuel, air, and glass raw materials into the melting chamber tangentially of the flue wall; and a purifying furnace, Fig. 3, for removing air bubbles from the glass leaving the melting furnace, the purifying furnace comprising a rotatably mounted cylinder lined with refractory brick 21 and having an inlet end 26 and a glass discharge end 27, and an annular baffle 24, having perforations 25 in its periphery, fixed to the inside wall of the cylinder. Glass, flowing down the inclined wall 10 of the melting furnace enters the purifying furnace at 26 and is subjected to centrifugal force in the rotating cylinder of the purifying furnace. Air bubbles in the glass accordingly move towards the axis of rotation and bubble free glass flows through the perforations 25 and out of the furnace at 27 into a mixer 31 which is rotating more slowly than the cylinder of the purifying furnace and accordingly mixes the glass into a homogeneous mass.
Patent GB-645546-A (GB)
Abstract: 645,546. Electroplating. TRIGGS, W. W. (Carnegie-Illinois Steel Corporation). Sept. 28, 1948, No. 25279. [Class 41] [Also in Groups XXXVIII and XL (b)] A method of electroplating striplike metal objects consists in passing through an electrolyte two strips forming the cathode and the anode, guiding the strips in parallel, proximate relation to each other, and maintaining shields between the edges of the strips. As shown in Fig. 1, a strip of base metal C to be plated is fed sinuously in and out of a bath 20, being guided by cathode rolls 26, 27. An anode strip A in the form of solidified molten metal is drawn from a melting-pot 31 and passed through the tank 20, being guided by rolls 28 and arcuate stationary guides 29. The strips A, C are separated near their edges by shields 38 which, as shown in Fig. 3 (plan view), are moved by means of two screws 41, 42, each formed with right- and left-hand portions. The screws may be moved automatically or by hand through chain-andsprocket gearing 47, 46, whereby the shields are adjusted towards or away from the edges of the cathode strip C. The screws are slidably mounted in bearings 45 to enable the shields to move in accordance with any lateral movement of the strip, such movement of the shields being effected by a reversible electric motor 51 which is operated under the control of photo-electric cell means or electromagnetic means (see Group XXXVIII). The shields 38 are each of U-shape in section with a short leg 38a and a longer leg 38b, the latter leg being notched to prevent heavy deposits being made on the edges of the cathode. The surface of the anode strip may be notched or similarly shaped to provide an increased surface area. In the arrangement shown in Fig. 12 the cathode strip C passes over horizontal rolls 26, 27 and the anode is composed of two strips fed from a horizontal roll 60 to a roll 61, the axes of which is inclined at 45 degrees to the horizontal, and then passed in sinuous form over vertical rolls 281. The anode strips pass one on each side of the cathode strip, shields 38<SP>1</SP> of channel shape separating the anode strips from the edges of the cathode strip.
Patent GB-732961-A (GB)
Abstract: 732,961. Boxes. THOMPSON & NORRIS MANUFACTURING CO., Ltd. (Paige, R. E.). Aug. 15, 1950 [Aug. 15, 1949], No. 21188/49. Class 18. An oblong, substantially rectangular blank 1 of foldable sheet material, to be set up into a structure of generally hour-glass shape, has transverse incisions 5, cut back at one side to form trapezoidal openings as shown and is scored where indicated by chain line, a single chain line indicating that the blank will be folded up, out of the plane of the Figure about that line and a double chain line that it will be folded in the opposite direction. One end of the blank is cut to follow the cut back sides of the slots 5. The blank is folded about scores 11 and the ends secured by adhesive tabs 19, to form a hollow rectangular prism. The walls of the prism are now collapsed by transverse pressure on the waist portions 16 as indicated by the arrows, followed by axial pressure until portions 15, 16 are in surface to surface contact, as are portions 13, 17 and 14, 18. The completed structure supports a cathode ray tube 33 within an outer box 32. The open end being closed by a cap 22, formed by doubling over the flanges 26, 27 on the score lines 30 and inserting them in slots 23. Specification 733,036 is referred to.
Patent GB-739437-A (GB)
Abstract: 739,437. Tappet clearance gauges. P.&G. MANUFACTURING CO. Feb. 17, 1954 [Feb. 20, 1953], No. 4645/54. Class 106 (2). In a device for measuring the clearance between a rocker arm and a valve of an overhead valve engine, a cylindrical casing 1 open at both ends having its lower end 2 adapted to engage a spring retaining washer on the valve, houses an inner cylindrical member 5 having a projecting lip 14 to engage the lower surface of the rocker arm 15, the inner cylinder being forced upwards relative to the outer cylinder by a spring 6 attached by rods 9 and 7 respectively to the cylinders, and both cylinders having axial slits 12, 13 to enable them to straddle the rocker arm. In operation, the inner cylinder is first depressed relative to the outer cylinder and the device is placed on the valve, being kept in position by the spring 6. The rocker arm is then moved until it touches the stem of the valve and a gauge 21, fixed to the casing by a strap 22 is set to read zero by a thumb screw 20 which engages a member 17 attached to the inner cylinder. The rocker arm is then released and the dial indicates the clearance between it and the valve stem. The tappet 25 can then be adjusted and a continuous indication of the clearance will be given.
Patent GB-2023774-A (GB)
Title: Pressure regulator
IPC: G05D16/10
Filed: 1978-06-22
Abstract: The regulator comprises a casing 1 having a bore in which a piston 3 is slidable, the priston being biased by an adjustable spring 6 towards one end of the bore and coupled by a pivotal lever 4 to an electric switch 5. A control port 14 communicates with the end 2 of the bore and a chamber 13 defined by a reduced diameter portion 10 of the piston between an inlet port 9 for pressure fluid and a drain port 8. In operation the piston is moved under the forces of the spring 6 and the pressure in the end 2 of the bore to control the supply and discharge of fluid to and from the chamber 13 to maintain the pressure communicated through port 14 constant. <IMAGE>
Patent GB-2012417-A (GB)
Title: Air Conditioning Devices for Motor Vehicles
IPC: B60H1/00
Filed: 1978-07-18
Abstract: This invention relates to an air- conditioning device, particularly for a motor vehicle, comprising a main air duct (1), at least one heat exchanger in said main duct, first and second air outlet ducts (2, 3) from said main duct, and automatic means (6, 7, 8, 9) for distributing air from the main duct to said first and second outlet ducts in such manner that, at least under certain conditions, air emerging from the first duct is at a temperature different to that of the air emerging from the second duct, said device further comprising regulation means for said automatic distribution means comprising a hand operated control member for selectively regulating the difference between the outlet temperatures of said first and second air outlet ducts. <IMAGE>
Patent GB-2037969-A (GB)
Title: Monitoring vehicle lamp operation
IPC: B60Q11/00
Filed: 1978-08-18
Abstract: The rearlights or brake lights of a vehicle are monitored by light conducted along fibre optic light guides, one end of each guide being inserted into a respective lamp housing and the other end being displayed on the vehicle dashboard.
Patent GB-2004139-A (GB)
Title: Excessive voltage protection circuits
IPC: H02H9/00
Filed: 1978-08-30
Abstract: A circuit for preventing the generation of excessive voltages across a component 3 of a circuit including an inductive element 2, comprises a transformer 4 having its primary circuit connected across the component across which the generation of an excessive voltage is to be prevented, and its secondary circuit connected across a capacitor 8 and an associated load 10, there being included a uni-directional element 6 in the primary circuit of the transformer and another 9 in the secondary circuit, the uni-directional elements being arranged to prevent the said component and the capacitor being short-circuited by the transformer. <IMAGE>
Patent GB-2007628-A (GB)
Title: Copy Sheet Delivery Device for Copying Machine
IPC: B65H29/56
Filed: 1978-09-27
Abstract: A delivery device for a copying machine in which the leading edge of the copy sheet to which an image has been transferred is stripped from the imaging surface and directed into the narrow space between a first continually driven clutch element and a second clutch element resiliently restrained against frictional rotation with the first clutch element in the absence of a sheet in the space, entry of a sheet into the space clutching the elements to move together to carry the sheet to a location at which the clutch releases the copy sheet as it enters the nip between a pair of rollers, one of which moves with the first element. Any suitable stripping means may be employed to direct the sheet into the clutch. The apparatus incorporates means for directing second sheets of misfed double feeds to the rollers to prevent the second sheet entering the surface cleaning means.
Patent GB-2009175-A (GB)
Title: Process for Producing 3- Bromophthalide
IPC: C07D209/48
Filed: 1978-11-30
Abstract: 3-Chlorophthalide is reacted with hydrogen bromide in an inert solvent, optionally in the presence of a halogen exchange catalyst, to form hydrogen chloride and the desired 3- bromophthalide. In general, only stoichiometric amounts of the hydrogen bromide are required. 3-Bromophtalide is used in an organic synthesis as a means for introducing the phthalidyl radical into organic compounds such as antibiotics.
Patent GB-2011417-A (GB)
Title: Process for the Production of 1,3,4-Thiadiazol-5(4H)-Onyl(4)- Methyl Dithiophosphoric Acid Esters
IPC: A01N57/16
Filed: 1978-12-22
Abstract: 1,3,4-Thiadiazol-5(4H)-onyl-(4)- methyl dithiophosphoric acid esters are prepared by adding a thiophosphate acid, or an alkali metal or ammonium salt thereof, and 1,2,4-thiadiazole to an aqueous medium consisting essentially of 60- 98 wt.% of sulfuric acid, the amount of sulfuric acid is at least 0.7 mol per mol of free thiophosphoric acid, if free acid is used, and 1.7 per mol of thiophosphoric acid salt; adding paraformaldehyde to this reaction mixture; extracting the acid ester reaction product after the condensation reaction is completed with a solvent, followed by two water washes including neutralization with the last wash; and stripping the solvent and by co-distillation drying the acid ester reaction product and recovering it in melt form. This process is particularly useful in the preparation of O,O-dimethyl-S-[2- methoxy-1,3,4-thiadiazol-5(4H)-onyl- (4)-methyl]dithiophosphate (methidathion).
Patent GB-2012592-A (GB)
Title: Dental apparatus
IPC: A61C17/00
Filed: 1979-01-15
Abstract: A supply unit for supplying one or more operating media, such as electrical energy and liquid and/or gaseous media, to a number of dental handpieces, said unit comprising: a plurality of supply blocks (1) arranged side-by- side and each intended for the supply of at least one operating medium to a corresponding dental handpiece (8), communicating passages provided in said blocks for conveying operating media to the dental handpieces, and plug and socket type connections (28, 29) provided on the supply blocks to enable the interconnection of adjacent supply blocks and also the intercommunication of the passages thereof; in which each supply block has at least one corresponding plug-connector (29) which is movable relative to the supply block from an engaged position in a corresponding socket (28) of an adjacent supply block to a retracted position out of engagement with the socket to enable removal of the supply block from the supply unit. <IMAGE>
Patent GB-2011014-A (GB)
Title: Method and Apparatus for Sealing off Gas Service Pipes
IPC: F16L55/11
Filed: 1979-01-17
Abstract: This invention relates to a method and apparatus for cutting and sealing off old gas service pipes in an "under- pressure" environment. The method comprises drilling a hole "under- pressure" in the side of the existing service pipe, filling the part of the pipe with a mastic 21 which forms a plug within the pipe, sawing the service pipe so as to leave a stub 22 of pipe and mastic and attaching a cap 1, 2 to the stub left in the gas pipeline. <IMAGE>
Patent GB-2042803-A (GB)
Title: A support housing for a semiconductor power wafer for immersion in a fluorinated hydrocarbon
IPC: H01L23/40
Filed: 1979-03-05
Abstract: A support housing for a semiconductor wafer 3 which is centred therein between anode block 2 and the cathode block 1 includes two polygonal insulating plates 6, 7 bearing against the blocks. The plates are provided with notches at 120 DEG  to one another in which insulating pins 8-10 are snap-fitted. In the case of a thyristor, a flexible wire 17 is connected to a contact piece with a spherical end 18 in contact with the trigger 4 of the thyristor by means of a spiral spring 19. The housing is suitable for immersion in a fluorinated hydrocarbon for cooling the water. <IMAGE>
Patent GB-2046429-A (GB)
Title: Apparatus for testing the braking area, to produce a stop signal which efficiency of a machine
IPC: G01M99/00
Filed: 1979-04-11
Abstract: Industrial machines commonly have a safety system comprising a light beam which is broken when an operator moves his hand into a dangerous area, to produce a stop signal which halts the machine. For testing the stopping time or distance of such a machine, the invention provides a unit 37 mountable on the machine bed (not shown in Figure 4) and adjustable, e.g. by screw 48, so that it just does not interrupt the light beam sufficiently to initiate a stop signal. The unit has an interrupting member 42, 47 movable by a solenoid 38 when energised by a drive circuit 36 triggered by a signal from a device 35. The member 42, 47, moving under the action of the solenoid, operates a switch 44 to produce a timing signal indicating interruption of the light beam. The invention is not only applicable to machines having a light beam safety system, but also to systems where movement of the operator's hand into the danger area results in a change of capacitance, which change produces the stop signal. <IMAGE>
Patent GB-2051539-A (GB)
Title: Conditioner unit for mowers
IPC: A01D43/10
Filed: 1979-05-30
Abstract: A conditioner unit for attachment to a mover comprises a shaft having attached thereto tines which are spaced apart longitudinally and circumferentially of the shaft. To enable the unit to be attached to existing mowers the shaft is driven by a drive arrangement which is adapted to be removably connected to the drive of the mower. For simplicity of construction each tine preferably comprises two arms which are fastened together and to the shaft by a separate fastener, preferably a nut and bolt which secures the arms of each tine to a bracket on the shaft.
Patent GB-2053083-A (GB)
Title: Heating plate for joining together parts of thermoplastic material
IPC: B29C57/00
Filed: 1979-06-26
Abstract: A heating plate 1 for joining together parts 3, 4 formed from a thermoplastic material by heat sealing comprises one planar contact surface 6 and one contact surface 7 with an elevation or rib 2 thereon, by means of which a groove is obtained in the portion 5 of the part 4 heated against the surface 7. The groove serves to guide the part 3 to be joined thereto to its central point and also serves to collect molten material, so that a strong join is obtained. In cross-section, the elevation 2 may be triangular, as shown, or part-circular. The heating plate of the invention is of particular use in the joining of lids to accumulator cells and batteries and may comprise two parts (1a, 1b, Fig. 1) which form an open rectangle. <IMAGE>
Patent GB-2022561-A (GB)
Title: Dispenser for nested containers
IPC: B65G59/10
Filed: 1979-07-03
Abstract: A device for dispensing containers individually from a stack of nested containers includes a plurality of rotary dispensing elements (1b) spaced about the periphery of the bottom container of the stack and jointly supporting the stack. Each dispensing device comprises a disc element with a peripheral groove which extends in a plane normal to the axis of rotation of the element, and which has one side wall cut away in one part of the periphery of the groove and has the other side wall cut away in another part of the periphery of the groove. The side wall nearer the stack is adapted to engage between the bottom- most container and the next adjacent container in the stack. The elements are disposed in corresponding positions to each other in relation to the stack and are driven in unison. <IMAGE>
Patent GB-2086816-A (GB)
Title: Jet Propulsion Efflux Outlets
IPC: F02K9/30
Filed: 1979-07-12
Abstract: A jet propulsion efflux outlet assembly for effecting control of a flight vehicle, e.g. a guided weapon 1, in the pitch, yaw and roll senses comprises a nozzle member 2 defining apertures 3 through which efflux from a rocket motor (not shown) issues, a spoiler plate 4 mounted downstream of the nozzle member 2 with apertures 6 through which the issuing efflux passes, the spoiler plate 4 being movable laterally (cf. arrows 21, 22) to effect control in pitch and yaw and being rotatable (cf. arrow 24) for control in roll. When portions of the lips 5 of the apertures 6 are impinged upon by the efflux, changes in the thrust direction result to effect the desired control of the vehicle. <IMAGE>
Patent GB-2053870-A (GB)
Title: Recovery of sulfur from gas streams containing sulfur and sulfur compounds in dilute concentration
IPC: B01D53/86
Filed: 1979-07-20
Abstract: Gas streams containing dilute concentrations of sulfur vapor, entrained liquid sulfur, hydrogen sulfide, and sulfur dioxide are scrubbed with an acidic aqueous suspension of finely divided catalytic alumina or activated carbon which precludes formation of colloidal sulfur in the aqueous suspension and collects the sulfur values as solid sulfur deposit, which is recovered during restoration of catalytic activity of the catalytic material.
Patent GB-2030257-A (GB)
Title: A device for transmitting oscillatory rotary motion on a textile machine
IPC: D05B57/02
Filed: 1979-08-08
Abstract: The device has a transmission member 6 which is arranged between two oscillating members 2, 4 and which is stiff in tension and compression in the force transmission direction; the transmission member 6 is flexible at at least one end 8 transversely to its force transmission direction and is fastened by this end 8 rigidly to an oscillating member 10 eccentrically of the axis of rotation. <IMAGE>