baber/WOPTO huggingface dataset:
Patent GB-1416447-A (GB)
Title: Channel selector switching arrangements
IPC: H03J7/10
Filed: 1972-10-18
Abstract: 1416447 Channel tuning arrangements MATSUSHITA ELECTRIC INDUSTRIAL CO Ltd 18 Oct 1972 [19 Oct 1971 (3)] 47886/72 Heading H3Q A channel selector comprises an electronic tuner 14a having a voltage variable-capacity tuning element, means 43, 46-51 and 21-35 for providing channel selecting voltages corresponding to the channels to be selected, a switch 1 for selectively taking out a channel selecting voltage, output terminals 3-6 provided on the switch 1, each output terminal corresponding to a different one of groups of receiving channels, a network of resistors 18, 19, 20 for compensation of AFC sensitivity interconnecting the output terminals 3-6 to the tuning element of the tuner 14a and means to superpose the selected channel selecting voltage on the AFC voltage compensated by the resistors 18, 19, 20. The grouping of the channel selection voltages and the grouping of the AFC sensitivities is provided by the common output terminals 3, 4, 5 and 6 of the switch 1 which provides tuning voltages to the tuner 14a via 14 for lower VHF, intermediate VHF, higher VHF and UHF channels. The switch 2 which is gauged to the switch 1 is for switching the channel selecting element of the electronic tuner 14a to the above channels. The outputs 41, 40 and 39 provide switching voltages for the lower VHF, intermediate and higher VHF and UHF channels. A part or whole of tuning coils or additional capacity may be switched in by means of a switching diode. The gauged switches 1 and 2 may be driven to the selected position by a motor or the switches 1 and 2 may be electronic in which case switching can be done by electric pulses. A stop presetting mechanism may be provided for stopping the contacts 8 and 13 only at the desired receiving channel. The stop presetting mechanism may include a further switch gauged with the switches 1 and 2 for providing a stop channel signal for stopping only on the desired channel. The desired channel may be selected by remote control. The AFC input voltage is applied at 15 and the channel preselection voltages are determined by variable resistors 46-51 and are selected by a switch 43 gauged to the switches 1, 2. The resistor 19 is provided and the resistance of the resistors 17, 18 and 20 is made large to compensate for the lowering of AFC sensitivity, in the higher VHF channels. The AFC sensitivity can be controlled to be almost the same. In a simplified embodiment (Fig. 5, not shown) the switch 2 and the resistors 21-35 are omitted.
Patent GB-1488717-A (GB)
Title: Bonding apparatus and method for connecting wires between a semiconductor pellet and a lead frame
IPC: H01L21/60
Filed: 1974-11-06
Abstract: 1488717 Welding by pressure HITACHI Ltd 6 Nov 1974 [14 Nov 1973] 48035/74 Heading B3R [Also in Division G3] Wire bonding apparatus for connecting a wire between an electrode on a pellet fixed on a lead frame and a lead of the lead frame, comprising measurement means for measuring the position of the pellet relative to a reference position on the lead frame calculating means for calculating the desired bonding position of the electrodes and leads relative to the reference position on the basis of the measurement, and wire bonding means provided at a different work station from the position measuring means and including a bonding head operable in accordance with the calculation of the calculating means. In an embodiment the apparatus comprises a display means including a display screen 3, Fig. 1, for a magnifying projector, a table 2 on which the work is placed, an x, y shifter 5 for the projector to shift the lines 4 on the display screen and a means 6 to rotate the screen. A minicomputer 10 is provided to calculate the positions at which the wires are to be bonded, a wire bonding device 7 with a vertically and horizontally movable head 9 is provided at a separate work station from the display means and computer and a numerical control device 11 controls the bonding device 7. In operation a reference workpiece having a lead frame 21 and a semi-conductor pellet 31, Fig. 3, fixed on the lead frame is set on the table 2 and the position of the pellet 31 is measured in terms of the x, y co-ordinates of a corner and the angle of one side to the x axis and signals corresponding to these positions are stored in the minicomputer 10. Electrical signals indicate the positions of the free ends of the leads as well as of the electrodes on the pellet are also stored. A lead frame having a plurality of pellet thereon, on which wires are to be bonded, is then set on the table 2 and differences in the position of the pellets thereon and the reference pellet are measured and electrical signals indicating these differences are supplied to the computer and the computer calculates the position of the electrodes on the pellet and this information is stored in a cassette magnetic tape. The lead frame is placed on the bonding apparatus and the tape is placed in the control device 11, the bonding head then automatically bonding a wire between each electrode and its corresponding lead in accordance with the information on the tape. Instead of tapes, magnetic discs may be used and a number of wire bonding heads may be employed operated in accordance with information obtained at a single table 2. The frames are located at the work stations by pins (24, 25) which engage the holes 22, 23 and a roller (26) which engages the opposite side of the frame (Figs. 7, 8, not shown).
Patent GB-1438840-A (GB)
Title: Optical static card reader
IPC: G06K7/10
Filed: 1973-10-16
Abstract: 1438840 Optical sensor MATSUSHITA ELECTRIC INDUSTRIAL CO Ltd 16 Oct 1973 [17 Oct 1972 (2) 23 July 1973] 48088/73 Heading G4M Optical static punched card reader has a matrix of photo-electric sensors corresponding to perforation locations in a card and a further row or column of sensors compensating for variations in operating conditions. The sensors 21 for the card perforations are connected in series with a diode 22 between an output (row) line connected to an output circuit 23 and an input (column) line connected to an input circuit 24. The compensating sensors are connected to respective diodes acting in the opposite sense to the diodes connected to the data sensors and are connected between a corresponding row line and a potential reference which is earth if a positive interrogations pulse is supplied (Fig. la, not shown) or a positive voltage if a negative pulse is supplied. The columns are interrogated in turn so that in each row a data sensor and compensating sensor are connected in series to form a voltage divider. The sensors have similar characteristics to compensate for variations in light intensity, background illumination aging &c.
Patent GB-1025240-A (GB)
Title: Machining fluid
IPC: C10M173/02
Filed: 1962-12-21
Abstract: Machining fluids, for use as a lubricant and coolant during metal machining operations, comprise an emulsion of one or more glycerides containing both acetyl and higher fatty acyl groups in a ratio of more than 1:1.  Preferably the glycerides contain two aceyl and one higher acyl group per molecule.  The emulsion may be of the water-in-oil or oil-in water type, and may contain any of the following emulsifying agents: alkyl sulphates, alkyl aryl sulphonates, polyoxyethylene sorbitan, higher fatty alcohol ethers, and polyoxypropylene-polyoxyethylene copolymers, and combinations thereof with sorbitan esters, monoglycerides, or propylene glycol esters.  A bactericide may also be present, e.g. hexachlorophene, methyl para-hydroxy benzoate, alkyl dimethyl benzyl ammonium chloride, sodium trichlorophenate, orthophenyl phenol, hexyl resorcinol, or tris-(hydroxymethyl) nitromethane. A mixture of NaNO2ALSO:Water-in-oil or oil-in-water emulsions wherein the oil is a glyceride or mixture of glycerides containing both acetyl and higher fatty acyl groups in a ratio of more than 1 : 1, are used as machining fluids.  Any of the following emulsifiers may be present:- alkyl sulphates, alkyl asyl sulphonates, polyoxyethylene sorbitan, higher fatty alcohol ethers, and polyoxypropylene-polyoxyethylene copolymers, and combinations thereof with sorbitan esters, monoglycerides, or propylene glycol esters.  A mixture of NaNO2 and NaNO3 may be present as a rust inhibitor, and any of several specified bactericides may also be present.
Patent GB-1165942-A (GB)
Title: Fuel Injection Pumps
Inventor: ROOSA VERNON DAVIS
IPC: F02B3/06
Filed: 1966-10-27
Abstract: 1,165,942. Fuel injection pumps. V.D. ROOSA. Oct.27, 1966 [Nov. 1, 1965; Dec.9, 1965], No.48286/66. Headings F1A and F1F. In a rotating distributer type fuel injection pump the feed pump 18 comprises a hub formed at one end of the distributing rotor 14 having spring-biased vanes 19 mounted in transverse slots and engaging a stator 21. A cup-shaped cap 27 encloses the feed pump and holds a tiltable end plate 36 in alignment with one end of the stator. The rotor 14 is provided with an annular groove 15 in which is mounted a two part sealing ring 53 provided with the feed pump inlet and outlet ports 16 and 17. The groove 15 communicates with the outlet port 17 to provide fuel under pressure in the groove. The cap 27 is sealed with respect to the pump housing 10 by a sealing ring 38 and the sealing ring 53 and the stator 21 are maintained in alignment with the housing by a sleeve 39. The rotor 14 is urged to the right in the housing 10 by means of a spring 61, between the drive shaft 60 and the rotor to balance the force urging it to the left produced by the feed pump 18. Fuel is supplied to the injection pump cylinder 42 from the feed pump 18 via an air separator chamber 26, a valve (32, Fig. 3, not shown), which controls the feed pump outlet pressure in accordance with speed and a metering valve 34 operated by a centrifugal governor 31. The timing of operation of the injection pump plungers 44 is adjustable in accordance with speed by means of a piston (102, Fig. 4, not shown), subject to the output pressure of the feed pump 18 and connected by a member (115) to the cam ring (50).
Patent GB-1356829-A (GB)
Title: Device for preparing punch cards
IPC: G06K1/04
Filed: 1971-10-18
Abstract: 1356829 Card reader, punch and printer DECISION DATA COMPUTER CORP 18 Oct 1071 [16 Oct 1970] 48423/71 Heading G4M Data, e.g. orders from retail stores on preprinted forms (Fig. 4a, not shown), are transferred to punch cards for processing. A card reader, punch and printer has a stack 14 of primary or master file cards and a stack 16 of secondary or blank cards. Each primary card relates to a different item of the inventory and is searched for automatically under the control of instructions from a program memory and a specific card punched by the operator. The primary file is searched for cards relating to each item being ordered and the description of the item and the unit price is transferred to a new card. The customer and quantity are entered directly by an operator. On receiving an order form from a store an operator enters a particular discount value on the order form and stores the date, store number and route number from the form. The columns holding the data have A, B and digital 1, 2, 4, 8 positions. A digital 8 punch in a control card prepared by the operator causes transfer of data from a previous card to a succeeding card and ensures entry of the data store number and route number in all cards for the store. The item number of the ordered item is entered via keyboard 64 and the master cards are searched under control of a selected program. Program cards define the area to be searched for comparison with the entered number. On a valid comparison using memories 60, 42 and comparator 66 the master card contents are stored, additional data is added by the operator and this data and data from previous cards are transferred to a punch and entered into a blank card. The appropriate discount rate is entered in accordance with the order form.
Patent GB-1203275-A (GB)
Title: Improvements in process for yttriding and rare earthiding
IPC: C25D3/66
Filed: 1967-10-25
Abstract: 1,203,275. Electrolytically yttriding and rare earthiding metals. GENERAL ELECTRIC CO. Oct.25, 1967, [NOV.10, 1966], No.48513/67. Heading C7B. A method of forming an yttride or rare earthide coating on a base metal selected from the class consisting of (a) metal compositions having a melting point greater than 500‹ C., at least 50 mole per cent of said metal composition being at least one of the metals selected from the class consisting of metals whose atomic numbers are 4, 13, 21, 22, 25 to 29, 40, 43 to 47, 72 and 75 to 79 and (b) beryllided, borided, aluminided and silicided vanadium, chromium, niobium, molybdenum, tantalum or tungsten, and (c) zirconided niobium, which method comprises (1) forming an electric cell containing said base metal as the cathode, joined through an external electrical circuit to carbon, yttrium or rare earth metal serving as anode and a fused salt electrolyte consisting of (i) one or more of the alkali metal fluorides, or a mixture of one or more of the alkali metal fluorides with strontium fluoride and/or barium fluoride and (ii) an additional fluoride consisting of from 0À01-40 mole per cent of yttrium fluoride or 0À01-40 mole per cent of a rare earth fluoride, said additional fluoride being the fluoride of the anode metal when the anode is other than carbon, said electrolyte being maintained at a temperature of at least 500‹ C. but below the melting point of said base metal in the substantial absence of oxygen, and (2) passing a current between said anode and said cathode sufficient to establish a cathode density of from 0À01 to 30 amperes/dm<2> and a cell voltage below 3À0 volts during the formation of the yttride or rare earthide coating, the cell voltage being from 1 to 3À0 volts when a carbon anode is used. The terms "yttride" and "rare earide" designate any solid solution or alloy or intermetallic compound of Y or a rare earth and the base metal. The cell generates electric current. The deposition rate of the Y or rare earth may be decreased by inserting some resistance in the circuit or may be increased by impressing a voltage, e.g. to obtain constant current densities during the reaction. Specified fluorides that may be used are those of Li, Na, K, Rb and Cs, e.g. a eutectic mixture of NaF and LiF or of NaF, KF and LiF. The process may be carried out under vacuum or an inert atmosphere, e.g. of Ar, He, Ne, Kr or Xe. The electrolyte may be purified, e.g. from carbon by an initial electrolysis. An yttrium or rare earth anode may comprise a rod or be in the form of chips in porous metal baskets, such as Nb or Ta. A carbon anode may be shielded with a tightly woven screen of Nb, Mo, Ta, W or Fe.
Patent GB-1451803-A (GB)
Title: Apapratus for deposition of semic9nductor thin layers
IPC: H01L21/208
Filed: 1973-10-19
Abstract: 1451803 Apparatus for epitaxial growth MATSUSHITA ELECTRIC INDUSTRIAL CO Ltd 19 Oct 1973 [19 Oct 1972] 48768/73 Heading BIS In the deposition of epitaxial layers on substrates from a liquid phase an apparatus comprises a furnace with an internal refractory tube, and a boat within the tube provided with at least one axial cavity containing a solution of material to be epitaxially grown on a number of substrates, the boat comprises a number of flat members arranged on top of one another having at least one recess for the substrate, alternate members of the flat members being movable relative to the remaining members so that the solution contacts the substrates a number of times. In an embodiment shown in Fig. 3a, a refractory tube 11 contains a boat assembly 30 which comprises stationary members 70 and rotatable members 50 containing substrates 33 which can be rotated to bring the substrates 33 and solution 31 in cavity 35 in contact, rotation being by means of drive shaft 15 and rotating shaft 42 through cap members 40, doping impurity is added from chamber 23. Fig. 3b shows the same apparatus after withdrawal of the stirrer 28 and rotation of the rotatable members 50 to bring the substrates in contact with the solution. Substrates exemplified are GaP, on which n and p type layers are grown using a solution of GaP in Ga containing Le or Zn as impurities, and GaAs on which Ga Al As layers are grown using Si as an impurity.
Patent GB-1073913-A (GB)
Title: Improvements in and relating to thermoplastic bags
Inventor: DUNS JOHN
IPC: A47G25/54
Filed: 1962-12-28
Abstract: 1,073,913. Filing papers. SMITH & NEPHEW PLASTICS Ltd. Dec., 20; 1963 [Dec. 28, 1962], No. 48811/62. Heading-B6E. [Also in Division B8] A dispenser for pads of thermoplastic bags (see Division B8) comprises a base plate 24, curved or straight filing, posts. 26, and a weight- or, spring-pressed roller 30 pivoted on the base plate. by arms 31 for maintaining, the pad in position. Apertures 25 are provided whereby the dispenser is secured to a wall or counter.
Patent GB-1007537-A (GB)
Title: Improvements in and relating to the depth feed of hobbing machines
IPC: B23F23/12
Filed: 1962-12-31
Abstract: 1,007,537. Gear-cutting. F. HURTH and H. HURTH. Dec. 31, 1962 [April 27, 1962]' No. 49012/62. Heading B3K. A gear-hobbing machine comprises a hydraulic means 90, 66 to feed the work 52 towards the hob 30 and means 71 for adjusting the work relatively to the drive. The machine is generally as described in Specification 940,893. The work-slide 14 carries the nut 71 engaged by the screw-threaded portion 70 of the rod 66. Manual adjustment of the nut 71 by a shaft 75 determines the initial position of the work, and a washer 84 and an adjustable screwed knob 77 determine the limits of movement. The knob 77 may also actuate a switch 85. The hydraulic piston 90 moves the rod 66 through a lever 95. The lever also operates switches 98, 99 and a lubricating pump 100. The hob slide may be fed instead of the work. The adjustment may be effected by other gearing or hydraulic means or automatically by a hydraulic or electric motor.
Patent GB-1085178-A (GB)
Title: Tunnel diode multistable circuit
Inventor: KOHN GERHARD
IPC: H03K3/315
Filed: 1965-11-19
Abstract: 1,085,178. Tristable tunnel diode circuits. INTERNATIONAL BUSINESS MACHINES CORPORATION. Nov. 19, 1965 [Dec. 24, 1964], No. 49206/65. Heading H3T. A switching circuit for use as an amplifier of the first half of a bipolar pulse which is insensitive to the second half, has a current-voltage characteristic with three stable regions separated by two negative resistance regions, and is composed of three parallel current paths, two of which contain tunnel diodes oppositely poled with respect to one another and the third of which consists of a resistor. The two diodes are forwardly biased (Fig. 3, not shown). In a practical form (Fig. 5) the bias sources for the tunnel diodes are in the form of a voltage divider R1, R2 across a voltage source V s . The circuit is initially in its central stable state (A - , Fig. 4, not shown), and a positive current pulse at 11 will switch it to its positive highvoltage state (B), while a negative current pulse will switch it to its negative high-voltage state (C). Switching direct from (B) to (C) or vice versa needs a pulse of greater amplitude than the initial pulse and hence the circuit is insensitive to the second half of a normal bipolar pulse from a thin film magnetic store. Asymmetries in the diode characteristics can be corrected by changing the ratio of R1 and R2, which can be constructed as a potentiometer. The source V s  can be a strobe pulse generator with a sharp initial peak to reset the circuit to point A on the characteristic at the end of the peak. The sum of R and the parallel connection of R1 + R2 (in ohms) should be between 4/3 and 4/5 times the ratio of the voltage (in millivolts) provided by the source and the tunnel-diode peak current (in milliamps),
Patent GB-1135788-A (GB)
Title: Improved tio precipitation process
Inventor: TWIST WALTER
IPC: C09C1/36
Filed: 1966-11-05
Abstract: 1,135,788. Sulphate hydrolysis. BRITISH TITAN PRODUCTS CO. Ltd. 11 Sept., 1967 [5 Nov., 1966], No. 49696/66. Heading C1A. TiO 2  is produced by heating a seeded aqueous Ti sulphate solution at a substantially constant temperature in the range 90-108‹ C. to hydrolyse 15-60% of the sulphate, and then raising the temperature by 2-18‹ C. and subsequently maintaining a temperature such that the rate of hydrolysis is not greater than 1% (of the initial Ti sulphate content) per min. The Ti sulphate solution may be obtained by digesting ilmenite or Ti slag with cone. H 2 SO 4  followed by lixiviating the cake with H 2 O or dil. H 2 SO 4 . The solution may be reduced with scrap iron, clarified, and some FeSO 4 $ may be crystallized out. It may have a Ti concentration (as TiO 2 ) of 100-300 g./l., an Fe/TiO 2  ratio not greater than 1, and an acid/TiO 2  ratio of 1À6-2À1. The seeds may be anatase or rutile inducing, and may be obtained by hydrolysis of TiCl 4  partially neutralized with NaOH. 0À05-5% of seeds, based on the Ti content (as TiO 2 ) of the solution, may be used. Raising of the temperature, e.g. from 97‹ C. to 105‹ or 100‹ C., may be carried out over not more than 25 mins., e.g. 3-10 mins., and the raised temperature maintained for not more than 30 mins., e.g. 1 min. The temperature may then be lowered to 85-95‹ C. over 30-180 mins., and the rate of hydrolysis is preferably then maintained constant at 0À2- l%/min. by varying the temperature, e.g. by raising it from 91‹ to 102‹ C. over 110 mins. The product may be calcined at 890‹ C. after the addition of ZnO, K 2 SO 4 , and NH 4 H 2 P0 4 , and finally wet milled and dried at 105‹ C.
Patent GB-1326979-A (GB)
Title: Method of and apparatus for producing magnetic recording tapes
IPC: B29C48/08
Filed: 1971-10-27
Abstract: 1326979 Coating webs AGFA-GEVAERT AG 27 Oct 1971 [29 Oct 1970] 49896/71 Addition to 1300645 Heading D1L The process and apparatus of the parent Specification are modified by providing at least one of the interior surfaces of the nozzle passage between inlet zone 33 and the extrusion slit 32 in the extrusion head 3 with a sawtooth like profile. The modification forms sections 34 and 35 in the head 3 of increased and decreased size and by thus producing a mixing movement in the dispersion 4a improves the uniformity of the magnetic coating layer on the support 5.
Patent GB-1327624-A (GB)
Title: Ultrasonic delay lines and a method of making them
IPC: C03C15/00
Filed: 1970-10-26
Abstract: 1327624 Acoustic delay lines LICENTIA PATENT-VERWALTUNGS-GmbH 26 Oct 1970 [25 Oct 1969] 50727/70 Heading H3U The glass body of a delay line having input and output transducers 1, 2 has its major surfaces 4, 5 substantially totally reflecting and to reduce the sensitivity of these surfaces to moisture and temperature they are subjected to a chemical etching treatment. The entire body may be subjected to the treatment carried out by application of an acid, the transducers 1, 2 being protected by a suitable coating.