baber/WOPTO huggingface dataset:
Patent GB-1227132-A (GB)
IPC: C30B11/00
Filed: 1967-04-14
Abstract: 1,227,132. Crystal-pulling. PLESSEY CO. Ltd. 15 May, 1968 [14 April, 1967], No. 17372/ 67. Heading B1S: [Also in Divisions C1, C4 and H1] In the preparation. of crystalline films (see Division C1) lead stearate is poured onto the surface of a molten tin/silver alloy thereby fusing the lead salt to form a film over the surface of the alloy, creating across the plane of the film a gradient which affects the crystalline orientation of the film and firing the film to drive off the organic constituent. An apparatus for the continuous production of single crystal films comprises a shallow bath 7 containing the molten tin/silver alloy, said bath being at least partly within a furnace 6 of internal temperature 800‹C, . and being inclined at a small angle to the horizontal axis so that the molten alloy forms a meniscus 9 outside the furnace, the temperature of the alloy at this point being about 500‹C. Lead stearate is poured onto the surface of the liquid metal 8 at the end of the bath remote from the meniscus 9. Fusion of the salt causes a surface layer to spread over the metal and pass into the furnace where the resulting film is fired at 800‹C. The pressure from the melting of further lead salt causes the fired film to pass through the furnace and move towards the meniscus 9 from which a single crystal 10 of lead oxide may be pulled.
Patent GB-1227674-A (GB)
IPC: G01J1/42
Filed: 1969-07-18
Abstract: 1,227,674. Semi-conductor devices. NIPPON ELECTRIC CO. Ltd. 18 July, 1969 [19 July, 1968], No. 36365/69. Heading H1K. A solid state device for determining a spatial light distribution comprises two elongate piezoelectric semi-conductor crystals 1, 3, each having electrodes, such as 4, at both ends, and an elongate photoconductive element 2 situated between the crystals 1, 3. The crystals 1, 3 are preferably of equal length but staggered as shown so that when a high voltage pulse is applied simultaneously at adjacent ends of both crystals the high field domains which are consequently generated and which travel along the respective crystals 1, 3 at approximately the acoustic velocity are spaced apart along the direction of propagation. The same result may be achieved by aligning the ends of the crystals 1, 3 but applying separate temporally displaced voltage pulses to the respective crystals. If light is falling on a part of the photoconductive element 2 a current flows between the two crystals 1, 3 and to a differential amplifier 6 only while the high field domains are situated such that the illuminated portion lies between the two domains. CdS may be used both for the crystals 1, 3 and for the photoconductive element 2, preferred resistivities being about 10 # cm. for the crystals 1, 3 and 10<SP>5</SP> #.cm. and 5 x 10<SP>2</SP> #cm. for the dark and light conditions respectively of the element 2. The crystals 1, 3 may be bonded to the element 2 by thermocompression using In strips arranged perpendicularly to the current direction. Alternatively the photoconductive element 2 may be a transversely slotted evaporated layer, or the In strips may be replaced by a thin dielectric bonding agent. GaAs may be substituted for CdS for the photoconductive element 2.
Patent GB-1229977-A (GB)
IPC: B21B37/46
Filed: 1968-08-05
Abstract: 1,229,977. Control of two or more motors. WESTINGHOUSE ELECTRIC CORP. 5 Aug., 1968 [28 Sept., 1967], No. 37257/68. Heading H2J. [Also in Division G3] A rolling mill has a feed reel 14 and a deflection roller 24, guiding metal strip 12 into the mill, each driving a pulse generator 30, 26, the speed responsive signals from these two generators being compared and when their difference is such as to indicate that the reel 14 is nearly empty a signal is issued to a master speed control 20 to slow down the mill. Means are provided to adjust the system for differing strip thickness. The outputs of the two pulse generators 26, 30 are applied to gates 40, 42 under the control of a timer 38 which periodically switches the gates on so that counters 48, 50 can count the pulses. When the gates are off a difference detector compares them and then the counters are reset ready for the next cycle. One counter 50 is reset to zero but the other is reset to an offset value by a selector 54, the value being dependent on the thickness of the strip and the running speed of the mill. The selector 54 also varies the on/off ratio of the timer 38 to provide for optimum use of the counters 48, 50.
Patent GB-1231147-A (GB)
IPC: E21C35/08
Filed: 1969-01-24
Abstract: 1,231,147. Optically guided tunnel borers. LAWRENCE Mfg. CO. Jan.24, 1969 [Feb.19, 1968], No.4149/69. Heading G2J. A tunnel boring machine has a guidance system comprising a reflector 60, mounted on the machine rearwardly of a point 48 about which the machine is angularly steered, a laser 58 fixed to a support external of the machine arranged to direct a light beam on to the reflector and a target 62 mounted on the machine rearwardly of the reflector and out of the path of the light beam. The steering point is located on a pilot cutter 28 forward of the main cutter 18. The rearward end of the main cutter is supported in a portion of the machine by vertically, opposed piston-cylinders 50, 54 and 52, 56by which the pilot cutter is vertically moved. The machine is supported in the tunnel by horizontal opposed piston-cylinder-shoe means 42-44-46 by means of which horizontal direction of the machine is made or rectified. Further support is given by skids 34, 36. The target, of the bulls-eye type is arranged at one end of an L-shaped arm, the other end of which is pivoted about a point at the opposite side of the machine centre-line to the target. The arm has a screw levelling device.
Patent GB-1231204-A (GB)
IPC: B23Q3/10
Filed: 1967-08-22
Abstract: 1,231,204. Templates. MOLINS MACHINE CO. Ltd. 21 Aug., 1968 [22 Aug., 1967], No. 38578/67. Heading B4X. [Also in Division B3] In a method of securing a workpiece 28 to a base-plate 12 a template 1 is placed in a predetermined positional relationship, e.g. in a holder for raising and lowering the template, and supports 14-18 are placed on the baseplate through cut-outs 3-7 which define a desired position and orientation of the supports. The supports 14-18 are secured to the baseplate and the template is raised to allow the workpiece 28 to be placed on the supports whereupon the template 1 is lowered and holes 2 in the template are used to position the workpiece on the supports. The workpiece 28 is then secured to the supports and the template 1 removed. The holes 2 allow distinctive features of the workpiece, e.g. the corners, to be sighted and the diameter of the holes gives the required tolerance for positioning the workpiece. The template 1 includse magnetic and non-magnetic plugs 9 to provide a binary code identification means, a hole 8 to engage a datum 13 on the base-plate and a chamfered corner 10 to assist in orienting the template. Operating instructions are provided on the template, e.g. in a first operation in which slots are machined a workpiece is clamped at supports 17, 18 in a second operation the workpiece is clamped at support 16. The supports 14-18 are secured to the base-plate by screws that engage with a square grid pattern of holes. Each support 14, 15 has raised support surfaces 19, 20 against which the workpiece is clamped by spring urged screws which screw up into tapped holes in the workpiece, Each support 16, 17, 18 has raised support surfaces, e.g. 21, against which the workpiece is clamped by a top clamp, e.g. 32, 34, having clamping surfaces aligned with the support surfaces and by means of a bolt 33, 36. A packing plate may be used, e.g. at support 17, when the workpiece 28 only partly overlies the support.
Patent GB-1232460-A (GB)
IPC: B24B1/00
Filed: 1968-06-14
Abstract: 1,232,460. Grinding. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. 14 June, 1968 [17 June, 1967], No. 28464/68. Heading B3D. A method of grinding plates of brittle material to a small thickness, such as 20 Ám, comprises adhering the plate 3 to a metal gauze 2 on a support 1, effecting grinding to a thickness determined by measuring the distance between the upper side of the plate and a fixed point on the support, and removing the plate from the support. The gauze may be brass mesh of 20 Ám thickness which is placed on the support 1. The plate 3, which may be of piezo-oxide, having a thickness of approximately 1 mm. is coated on one surface with cement 4 and placed with a slightly resilient layer 5 on the gauze. The assembly is heated and pressed by a die 6 to secure the plate to the support. Dust or contaminations in the cement are passed into the meshes of the gauze and do not cause breakage of the plate. After cooling, the support carrying the plate is removed for the grinding operation.
Patent GB-1233089-A (GB)
IPC: C08K5/11
Filed: 1968-08-15
Abstract: 1,233,089. Ether-nitriles; ether-acids. GEIGY (U.K.) Ltd. 14 Aug., 1969 [15 Aug., 1968], No. 38982/68. Heading C2C. [Also in Division C3] Propane - 1,2 - dioxypropionitrile; bis - (#- cyanoethyl} ether and ethane - 1,2 - dioxypropionitrile are prepared by reacting acrylonitrile with 1,2-propylene glycol, dioxan and ethylene glycol respectively and are then reacted with isooctanol or isobutanol to give di-iso-octyl 4,7- dioxa - 5 - methylsebacate, di - isobutyl 4,7 - dioxa- 5 - methylsehacate, di - iso - octyl 4,7 - dioxasebacate and di - iso - octyl 4 - oxapimelate. The esters are used as plasticizers.
Patent GB-1238950-A (GB)
IPC: H03F1/52
Filed: 1968-09-27
Abstract: 1,238,950. Protecting and stabilizing transistor amplifiers. RCA CORPORATION. 26 Sept., 1969 [27 Sept., 1968], No. 46153/68. Heading H3T. An overload protection arrangement for an amplifier 11 comprises a transistor 16 on the same substrate connected across the input path, the base receiving a steady bias (e.g. from 17 and 20) such that when the temperature exceeds a given value the transistor conducts. The protecting transistor varies in temperature with the amplifier transistor and by arranging that the steady bias offsets the temperature stable component of the base-emitter threshold of the protecting transistor, protection from overload can be made dependent upon the temperature varying component so that it becomes effective at a lower output level as the temperature increases. As shown, protection from overload is effected in dependence upon current in and voltage across the amplifier as sensed by resistor 15 and potentiometers 23, 22 respectively. Fig. 4 shows a class B amplifier incorporating in each half the protection arrangement 16-23 of Fig. 2. Each amplifying transistor has its input shunted by a diode connected transistor having an area in relation to its associated amplifier to define the gain. For positive excursions of the input voltage at 56 transistor 51 cuts off and the lower half of the amplifier is driven via transistor 50. For negative excursions transistor 51 acts as a common base stage to drive the upper half. The inputs of transistors 51, 50 are shunted by a transistor-diode series 53, 52 of some 20 times the area so that the required quiescent bias may be obtained from a conveniently low valued resistor 55. This resistor also provides the necessary large current drive for high signal peaks. The circuit permits the total quiescent current to be very low.
Patent GB-1252105-A (GB)
IPC: A01N47/22
Filed: 1970-06-01
Abstract: 1,252,105. Phenyl N-methyl carbamates. IMPERIAL CHEMICAL INDUSTRIES OF AUSTRALIA & NEW ZEALAND Ltd. 1 June, 1970 [22 Dec., 1969; 23 Feb., 1970], No. 26295/70. Heading C2C. The invention comprises 3-isopropyl-5-methyl phenyl N-propionyl (and N-butyryl)-N-methyl carbamate. They are prepared from 3-isopropyl- 5 - methylphenyl N - methyl carbamate and propionic or butyric anhydride or chloride. They have pesticidal activity and are used in compositions together with an inert diluent or carrier.
Patent GB-1253128-A (GB)
IPC: B23Q35/46
Filed: 1969-03-28
Abstract: 1,253,128. Milling machine details. HAMPSON JIG, TOOL & AUTOMATION Ltd., and W. F. HAYWARD. 24 June, 1970 [28 March, 1969], No. 16407/69. Headings B3B and B3K. A copying device for a milling machine comprises a slide 16, a template holder 17 mounted on the slide, providing adjustment of the template in two planes transverse to the direction of slide movement, a rotary work-table 12, drive means 15, 22-28, for interconnecting the slide and table, and a stylus 29 arranged to engage the template, and control the axial and transverse position of the tool 11. Table 12 is rotated by a hand wheel 28 through a shaft 27 and a mechanism (not shown), and the hand wheel also drives a lead screw 15 for slide 16, through shaft 27, and change gearing 22-26. Template holder 17 comprises a base 17a secured to slide 16, a member 17b is bolted to the base 17a at positions 18, and can be horizontally adjusted on the base by moving either or both of its ends laterally, and inserting spacer blocks 20. A second member 17c is bolted to member 17b at positions 19 and can be vertically adjusted by inserting blocks (21), Fig. 4 (not shown). A number of workpieces can be machined in succession, and progressive movement of the table 12 and slide 16 can be controlled through the hand wheel, or in accordance with a programme, by an automatic operating mechanism. Operation of the slides carrying the tool may be hydraulic.
Patent GB-1264252-A (GB)
IPC: B21J15/02
Filed: 1970-02-03
Abstract: 1,264,252. Can ends; preventing corrosion in packages. HAUSTRUPS FABRIKER AS. 3 Feb., 1970 [18 Feb., 1969], No. 5055/70. Headings B8C and B8D. [Also in Division B3] A method of connecting two sheets 1, 2, at least one surface of sheet 1 being solderable and at least one surface of sheet 2 being unsolderable, comprises placing sheet 2 on a solderable surface of sheet 1 with an unsolderable surface of sheet 2 outermost, and depositing liquid solder 4 on the sheet 1 through an aperture 3 in sheet 2, the solder uniformly overlapping the edge of the aperture to form a stud. The sheet 1 may form the lid of a container and the sheet 2 a pull-tab. Additional apertured sheets may be interposed between sheets 1, 2. The connection may also be used for fastening inside a container of cooked ham an aluminium electrode for electrolytically protecting the interior of the container against corrosion. During hardening of the solder, the head of the stud 4 may be pressed as in a modified connection, Fig. 3 (not shown), in which the aperture is formed in a depression in the sheet (2). The solderable and unsolderable surfaces may be provided by appropriate coatings, e.g. a lacquer, silicone or chrome may provide unsolderable coatings.
Patent GB-1266048-A (GB)
IPC: B32B15/08
Filed: 1969-07-02
Abstract: 1,266,048. Coated sheet materials. MITSUBISHI KASEI KOGYO K.K. 2 July, 1969 [6 July, 1968; 3 June, 1969], No. 33324/69. Heading B2E. [Also in Division B5] A method of making a composite body of metal and a polyolefin comprises applying a binder to a surface of said metal and/or to a surface of said polyolefin, the main component of said binder being a maleic acid-vinyl acetate copolymer, an acrylic acid-vinyl acetate copolymer, a partial ester of a maleic acidvinyl acetate copolymer, a partial ester of a maleic acid-styrene copolymer or a mixture thereof, assembling said metal and said polyolefin such that said binder is interposed therebetween, and applying pressure to the resultant assembly while heating the same to a temperature at which the surface of the polyolefin in contact with the metal melts to effect bonding. The polyolefin may be foamed or non-foamed, may be in the form of a sheet, powder or pellets and may be surface treated prior to bonding e.g. by flame, solvent, hot air, acid, electric discharge or by grafting a high molecular weight hydrophilic compound thereon. Specified polyolefins are polyethylene, polypropylene, polybutene and copolymers of olefins with other olefins or with non-olefinic monomers. The metal may be in the shape of a sheet, plate or block and may comprise iron, aluminium, copper, zinc, nickel, tin, magnesium, titanium or manganese or an alloy thereof. The binder is preferably applied in the form of a solution by dipping, spraying or brushing.
Patent GB-1266875-A (GB)
IPC: B29C67/00
Filed: 1968-08-06
Abstract: 1,266,875. Coated particles. IMPERIAL CHEMICAL INDUSTRIES Ltd. 9 July, 1969 [6 Aug., 1968], No. 37526/68. Heading B2E. [Also in Division C3] Mouldable thermoplastic materials containing a reinforcing filler are obtained by depositing a solid thermoplastic material from a liquid medium onto the filler, separating from the liquid medium, granulating the reinforced material and drying. The liquid medium may be an aqueous emulsion. The thermoplastic material may comprise polymers and copolymers of vinyl chloride and vinylidene chloride, and copolymers of acrylonitrile and styrene, particularly those containing more than 50% of acrylonitrile. A third monomer may be present, such as maleimides and N-aryl maleimides. The polymer may be deposited on the filler by adding the material to the polymerisation emulsion, followed by a material which destroys the effect of the emulsifying agent or dispersing agent. Suitable fillers are glass fibres, asbestos wool, mineral wool, natural and synthetic fibres, mica, glass plates, talc, clay and calcium carbonate. The filler is preferably pre-coated with a coupling agent, such as silanes, e.g. j-aminopropyl-triethoxysilane and vinyl trichlorosilane.
Patent GB-1289166-A (GB)
IPC: H01J61/82
Filed: 1969-12-03
Abstract: 1289166 Cooling discharge lamps WESTING- HOUSE ELECTRIC CORP 3 Dec 1969 [27 Jan 1969] 59064/69 Heading H1D Excessive heat build-up on any particular area of a constricted arc lamp envelope 12 is prevented by rotating the envelope about its longitudinal axis and providing the envelope with a plurality of internal spiral splines. Lead-ins 14 supporting electrodes 81 are connected through molybdenum ribbons 17 to molybdenum rods 20 sealed through the quartz envelope 12 and connected to lead-ins 22 sealed through an outer evacuated glass envelope 24 and supported in graphite or metal pivot blocks 28. Lower lead-in 22 is secured to the rotor 30 of an electric motor 32. The outer envelope 24 may be omitted and alternative driving arrangements provided. The envelope 12 is provided with four equispaced spiral splines (Fig. 3, not shown) which cause the tube atmosphere and the arc to spiral about the tube axis. The said atmosphere may be Hg, CeI 3 , DyI 3 , and A at a partial pressure of 20 torr. An auxiliary starting electrode may be provided.
Patent GB-1290953-A (GB)
IPC: H04M1/278
Filed: 1970-03-10
Abstract: 1290953 Repertory dialling apparatus PYE TMC Ltd 19 April 1971 [10 March 1970] 11441/70 Heading H4K [Also in Division G4] In an automatic dialler the dial information is binary coded on a card which is inserted in a reader until it operates a sensing switch 13 which starts the equipment and allows the card to be ejected at constant speed and the information read. The read information is stored until it is complete when it is transmitted as dial pulses or tones. The dialler is designed for use with the push-button telephone system described in Specification 1,195,141 and PBT in Fig. 3 represents this telephone instrument. In operation full insertion of the card closes microswitch contacts SS to operate relays RR and RL. The telephone line AB is looped through contact RL1 and electromagnet. TM is energized to release the card. Lamp LP and relay RL are energized through the line and Zener diodes Z1, Z2 ensure that the loop impedance is correct. While the card is being ejected photo-cells 20- 23 sense the positions of the holes in each row and the respective illuminated photo-cells cause the respective AND gates 31-34 to open and set the binary dial information into a store as if the respective push-buttons PBK had been operated. When the card is fully ejected all the photo-cells are illuminated and gate 35 opens to cause pulse generator 30 to operate and close gate 38, thus restoring the relay contacts and connecting LA to the telephone line so that dial pulses or tones can be transmitted. If the apparatus is for use in a PABX installation the circuit is modified, Fig. 4 (not shown), so that operation of the mirror switch causes an access digit to be sent to seize an exchange line and operation of relay RR is delayed until either dial tone is detected or a fixed delay time has elapsed. . Preferably the card is made of plastics material with punch-out holes but the information may be stored in magnetic form and an appropriate reader used.
Patent GB-1290979-A (GB)
IPC: H01L31/0224
Filed: 1970-10-22
Abstract: 1290979 Semi-conductor devices LINCENTIA PATENT - VERWALTUNGS GmbH 22 Oct 1970 [17 Nov 1969] 50297/70 Heading H1K A solar cell is produced by applying the back contact and sintering prior to the application of the front contact. This improves the electrical properties of the back contact without imparing the PN junction which lies just below the front contact. A solar cell may be provided with a vapour deposted T1-Ag alloy back contact which is sintered in a time-temperature range of 5 min. at 620 C. to 7 min. at 600 C., after 5 min. heating-up time, before application of the front contact which is briefly sintered at a lower temperature, e.g. 5 min. at 580 C. (including heating-up time).
Patent GB-1291007-A (GB)
IPC: A01K5/02
Filed: 1971-04-19
Abstract: 1291007 Mixing J F LARCON and P E BALLAND 19 April 1971 [24 April 1970] 26881/71 Heading B1C [Also in Division Al] Automatic apparatus for mixing and dispensing in metered proportions powdered and liquid foods to animals comprises a hopper 2 for powdered food, a metering dispenser 3 for receiving powdered food from the hopper 2 to pour the food at a predetermined adjustable output into a mixing chamber 6 having a dispensing spout 6a, a hose 5 for delivering liquid food to a constant-level reservoir 4 having an outlet valve 13 which is operable to deliver a predetermined adjustable amount of liquid food into the mixing chamber 6, the apparatus being movable along a service passage 26 so that the spout 6a travels above a row of feeding troughs, and a member at each trough which operates a device carried by the apparatus for determining the amount of food to be dispensed into each trough. Electricity is supplied to the apparatus by a cable 51 coiled on a drum 50. Powdered food is moved from the hopper 2 to the dispenser 3 by a screw 8, and the dispenser consists of a partitioned rotating drum driven by a speedadjustable constant speed motor 9. The outlet valve 13 is connected by a cable 23 to a pair of hinged flaps, Figs. 1 and 3 (not shown), which cooperate with a stationary gauging fork, Figs. 1 and 4 (not shown), at each trough to move the cable and so open the valve. The flaps are held in operated position by a spring-urged, pin-engaging rack adapted to be subsequently engaged by a stationary stop member to release the rack and so close the valve 13. In a modification, Fig. 5 (not shown), the amount of food dispensed is made independent of the movement of the apparatus by providing a time-lag device to close the valve 13. The device comprises a cable attached to a pair of fork-operated hinged flaps and to a spring-loaded piston disposed in an oilfilled cylinder and provided with a valve having a gauged orifice. A limit switch operated by the device controls the drive of the metering dispenser 3 and the energization of an electromagnet which releases the pinengaging rack holding the flaps connected to the valve 13 in operated position.
Patent GB-1308160-A (GB)
Title: Gas burner
IPC: F23D14/00
Filed: 1971-03-30
Abstract: 1308160 Gas burner PENZENSKY KOMPRESSORNY ZAVOD 30 March 1971 8128/71  Heading F4T In a gas burner, a mixer 1 is supplied with air through a branch pipe 5 and with gas via a branch pipe 16 and holes 7 in a pipe 6 and the air-gas mixture is fed to a nozzle 2, which has a tapered outlet opening or slot 3 having a crosssection in the form of several circular arcs which merge smoothly into one another, and gas is also supplied from pipe 6 via openings 9, branch pipes 10 and nozzles 11 to openings 4 in the centres of the circular arcs.