baber/WOPTO huggingface dataset:
Patent GB-1200426-A (GB)
Title: Method for providing a planar transistor with heat-dissipating top base and emitter contacts
Inventor: BELARDI R J
IPC: H01L23/29
Filed: 1969-03-21
Abstract: 1,200,426. Planar transistors. HUGHES AIRCRAFT CO. 21 March, 1969 [22 March, 1968], No. 15011/69. Heading H1K. The electrode structure of the silicon planar transistor shown in Fig. 8 is made by first forming apertures through the oxide passivation to the rectifier array of emitter zones 8 and to define a frame base electrode around them. Gold or platinum is then sputtered or vapour deposited over the entire upper surface, that on the oxide removed and the remainder alloyed to the silicon to form electrodes. Then a layer of titanium or layers of chromium and gold which adhere to the oxide, are deposited and photo-resist and etching steps performed so that it remains over the electrodes and forms a base contact area 6<SP>11</SP> with strips 6<SP>111</SP> extending therefrom to the base electrode. After removal of the photo-resist save where it overlies the emitter electrodes and base contact area a layer of silica, beryllia or glass is sputtered on the surface. The assembly is then heated, causing the photo-resist to gasify and blow out the overlying insulation thus exposing the underlying metal. Alternatively exposure is effected by ultrasonic techniques. Superposed layers of chromium and gold are next vapour deposited over the entire surface and covered with photo-resist except where heat dissipating contacts 26, 28 are to be formed, and silver electroplated on using the layers as plating electrode. Finally, the photo-resist and underlying metal are removed to produce the structure shown. In an alternative arrangement a collector contact may be similarly provided on the top face in which case all the contacts may be tinned by dipping in molten lead-tin or silver-tin and the transistor face bonded to a substrate.
Patent GB-1507176-A (GB)
Title: Bag forming and handling apparatus
IPC: B31B155/00
Filed: 1975-04-11
Abstract: 1507176 Forming, opening and filling bags HAVER & BOECKER 11 April 1975 [13 April 1974] 15013/75 Heading B8C [Also in Division B5] An apparatus for making bags and applying the bags to a filling nozzle 51 of a bag filling machine, comprises rollers 20, 21 for intermittently feeding bag lengths of tubular plastics film between opposed transverse welding jaws 7, (7a), Fig. 6 (not shown) and past a transverse cutter 23 which is located below the welding jaws 7, (7a) but above the pick-up end of a conveyer which grips the upper ends of the bags, formed by transverse welding and cutting operations, so that they hang down freely as they are conveyed to a bag mouth opening device from which the bags are successively transferred and applied to the filling nozzle 51. The welding jaw 7 is supported by a pivotally suspended U-shaped carrier (8), Fig. 6 (not shown), and the other welding jaw (7a) is secured to a further pivotally mounted jaw carrier (8a) Fig. 6 (not shown). The jaws 7, (7a) are moved towards each other by a traction force; which is applied to the jaw carrier (8) at two positions which lie outside the width of the jaw 7, and by a pressing force which acts centrally on the jaw carrier (8a). The bag conveyer comprises two laterally spaced endless chains (27), Fig. 2 (not shown), which are movable stepwise and are adjustable in the lateral direction to accommodate bags of different widths. Each chain (27) carries a plurality of co-operating fixed and pivotal bag gripping members (37, 38), Fig, 4 (not shown), spring urged towards one another. The gripping members (37, 38) of each chain (27) are opened at the pick-up and discharge ends of the conveyer by levers (41, 42), Fig. 3 (not shown), which are linked by a rod (43), Fig. 3 (not shown), and actuated by a piston-and-cylinder unit (44), Fig. 3 (not shown). The bag mouth opening device comprises two opposed vacuum tubes 45, 46 which are movable apart to separate the opposed bag walls gripped thereby and are also movable bodily in the downstream direction of the bag conveyer to present the openedup bag below a device for applying the bag to the filling nozzle 51. This latter device comprises fingers 47 which are movable horizontally and about respective vertical axes and a horizontal axis to enter, stretch taut and apply the bag mouth to the filling nozzle 51 to which it is secured by clamping jaws 51a.
Patent GB-1498853-A (GB)
Title: Apparatus for purification of water
IPC: C02F1/52
Filed: 1975-04-11
Abstract: 1498853 Water purification apparatus AGROTECHNIKA np 11 April 1975 [29 April 1974] 15046/75 Heading C1C An apparatus for purification of water by its upward flow through a suspended sludge layer, comprises a vertically oriented tank containing homogenizing, separating and thickening zones formed by walls inserted in the tank, wherein the homogenizing zone is situated at the bottom of the tank and has the shape of a truncated cone or pyramid and is provided with a homogenizing stirring arrangement, the separating zone has the shape of an inverted truncated cone or pyramid and positioned above the homogenizing zone and has in its upper part an extension formed by the wall of the tank, and the thickening zone is spaced between the wall of the tank and the side walls of the homogenizing and separating zones, a raw water inlet being provided at the bottom of the homogenizing zone, a narrowed passage interconnecting the upper part of the homogenizing zone with the bottom of the separating zone, a first clean water collecting means with a clean water discharge being provided in the top part of the separating zone, the separating and thickening zones being interconnected in their upper parts by means of a connecting channel, a second clean water collecting means being provided in the top part of the thickening zone behind the wall of the said connecting channel, sludge discharge tubing with a sludge discharge being provided at the bottom of the thickening zone.
Patent GB-620493-A (GB)
Title: Improvements in or relating to radio systems for enabling geographical positions to be determined and/or indicated at a receiver
IPC: G01S1/02
Filed: 1946-05-17
Abstract: 620,493. Radio navigation. DECCA RECORD CO., Ltd., and FENNESSY, E. May 17, 1946, No. 15054. [Class 40 (vii)] In a radio navigation system for determining position at a receiver utilizing a number of spaced transmitters radiating signals having a fixed phase relationship with one another, the transmitters are arranged to transmit carrierwaves of different very high frequencies which are modulated respectively with signals of different frequencies of a lower order and means are provided for automatically maintaining a fixed phase relationship between the modulation signals. The system is of particular advantage for the accurate determination of position over short ranges and may be used in conjunction with an overall navigation system such as is described in Specification 620,479, where the accuracy of such a system over a particular area is not as great as is required. Fig. 1 shows a map of a bay 2 in the vicinity of which it is desired to navigate with considerable accuracy; dotted lines 4 and 5 indicate equiphase contours created by stations of a system as described in Specification 620,479, which are at a considerable distance. More accurate coverage indicated by equiphase lines 6 and 7 is provided by stations A, B and C, having carrier frequencies of, for example, 40, 40.5, and 41 megacycles modulated respectively with the frequencies used in the overall system which may be 60, 80 and 90 kc. The master transmitter A may comprise simply a 40 mc. transmitter modulated by a stable 60 kc. oscillator. At the slave stations B and C signals from the master station are received and detected and the modulation converted into signals of 80 or 90 kc., as described in the abovementioned Specification. This modulation is used to modulate the slave high frequency transmitter. Means for maintaining the phase relationship between the master and slave modulations are provided also, similar to those used in the prior system, except that it is necessary to pass the signal received on the pick-up loop through a detector, Fig. 2 (not shown). The receiver, Fig. 3 (not shown), comprises three channels associated with a common aerial. Each channel receives and detects the transmission from one of the stations and the three modulation outputs are fed to a receiver for the system of Specification 620,479, such as is described in Specification 620,481. A switch may be provided isolating the high frequency portion of the receiver and switching the rest of the receiver direct to an aerial so that navigation with reference to the overall system is possible with the same receiver. Specification 584,727 also is referred to.
Patent GB-831289-A (GB)
Title: Improvements in the preparation of mono-silane
IPC: C01B33/04
Filed: 1957-05-13
Abstract: Siloxene Si6 O3 H6 is prepared as a grey powder by reacting a metal disilicide with an aqueous-alcoholic solution of mineral acid. Silicides specified are calcium, barium, and strontium silicide. Acids specified are hydrochloric, sulphuric, and acetic acid. Alcohols specified are methyl, ethyl, n- or iso-propyl, or n-, iso- or tert-butyl alcohol.  90-97% of alcohol may be present in the reaction mixture.  Acidic hydrogen to metal ratios of 2-18 to 1 are specified.  The temperature of reaction may be 0-95 DEG  C. but is usually room temperature.  The reaction mixture may be allowed to stand for 17 hours.  The siloxene may be separated by filtration, washed with ethanol, and vacuum dried at 60 DEG  C.  Monosilane is produced by reacting siloxene, preferably prepared as described above, with liquid or gaseous ammonia, in a non-oxidizing atmosphere and at a temperature of at least -33 DEG  C. Argon or helium may be employed as a carrier for gaseous ammonia which may be at a temperature of 350 DEG  C.  The system may be evacuated, or an inert gas atmosphere employed, when using liquid ammonia.  In order to use liquid ammonia, increased pressure may be employed and/or up to 30% of ammonium chloride, bromide, or iodide may be added to the reaction mixture.  The monosilane which is evolved together with ammonia and hydrogen may be condensed together with the ammonia in a liquid nitrogen trap, and thereafter selectively vaporized by replacing the liquid nitrogen by trichloromonofluoromethane at its freezing point.
Patent GB-139711-A (GB)
Title: Tooth pick holder
IPC: A47G21/12
Filed: 1919-06-16
Abstract: 139,711. Singleton, S. G. June 16, 1919. Contents, delivering.-A receptacle for holding toothpicks has a removable cap 3 provided with a number of discharge apertures 4 so arranged that, when the receptacle is inverted, toothpicks project from the apertures 4 and may be removed singly. Inside the cap 3 is an elastic disk 5 formed with narrow slots 6 arranged to restrict the effective area of the apertures 4. The cap 3 is formed with an internal groove to receive and hold the edge of the disk 5.
Patent GB-635145-A (GB)
Title: Improvements in or relating to tuning mechanism for wireless receivers
IPC: H03J1/04
Filed: 1947-06-09
Abstract: 635,145. Adjusting radio apparatus. DAWE, F. W. June 9, 1947, No. 15153. [Class 40 (v)] A radio receiver comprises a number of removable tuning members, one for each radio station to be received, each having a configuration distinctive of its associated radio station and arranged, upon being inserted into the receiver body to a predetermined position, to co-operate mechanically with the adjustable tuning element to tune the receiver to the respective radio station. As shown in Fig. 1, a plate 5 is inserted in a guideway formed by members 3 and 4 mounted on the chassis 1 and is held against end stops 6 by retaining clips 7 and 8. The plate 5 is provided with slotted projecting members 9 and 10 which are adjustably secured by screws 11 and 12. A spring- loaded wave-change switch operated by the lever 17 is moved to the required position by the member 10. The member 9 adjusts the tuning condenser by moving a pin 25, Fig. 2, moving in a guideway 26, and attached to a cord 23 passing round a drum 19 attached to the tuning condenser spindle, and round a drum 21 provided with a spiral spring 24 to rotate the tuning condenser to one end of its travel when the plate 5 is withdrawn. A number of plates are normally used each bearing the name of a station and with members 9 and 10 adjusted to receive that station, the receiver cabinet being provided with a slot through which the plate may be inserted and a window through which the station name is visible. Threaded rods, adjustable in a threaded bush secured to the plate 5, may be used instead of the members 9 and 10.
Patent GB-728634-A (GB)
Title: Inhibition of corrosion of metals
Inventor: SENKUS MURRAY
IPC: C23F11/02
Filed: 1953-06-01
Abstract: 728,634. Anti-corrosion wrapping paper &c. NOX-RUST CHEMICAL CORPORATION. June 1, 1953, No. 15229/53. Class 96. [Also in Group XVII] To paper for anti-corrosion wrapping is applied an organic amide and an inorganic metal nitrite, together with one or more amine or ammonium salts of carboxylic acids containing from 6 to 18 carbon atoms. The amide constituent is preferably urea, but may be guanidine, acetamide, propionamide, stearamide or benzamide &c. The most suitable nitrites are those of the alkali metals. The carboxylic acid may be aliphatic, araliphatic, aromatic straight chain, or branched chain mono- and dicarboxylic, e.g. caproic, benzoic, stearic, phthalic or sebacic acid, and the amine may be aliphatic, araliphatic and aromatic straight chain or branched chain primary, secondary or tertiary, e.g. trimethylamine, butylamine, hydrazine, benzylamine or pyridine. The paper may be made impervious with a microcrystalline or other wax, asphaltum or a soap such as sodium stearate, and may be corrugated.
Patent GB-576326-A (GB)
Title: Improvements in and relating to coal crushers
IPC: B02C4/08
Filed: 1944-08-14
Abstract: 576,326. Coal crushers. TAYLOR, E. Aug. 14, 1944, No. 15442..[Class 59] A coal crusher comprises a pair of parallel crushing rollers of different sizes the coal being crushed first between an abutment and the larger roller, then between the rollers and finally, between the rollers and spring influenced pivoted abutments. The rollers 1, 2 are mounted in the side members 13 of a frame and are driven from a shaft 8. The first crushing is effected between the larger roller 1 and an adjustable abutment 19, and the final crushing between the rollers and the pivoted abutments 20 which are mounted on a common cross rod 21 and are under the influence of springs 24 surrounding adjustable links 23.
Patent GB-1045337-A (GB)
Title: Improvements in or relating to vibrators
IPC: E04G21/08
Filed: 1963-04-19
Abstract: 1,045,337. Vibratory mechanisms. VIBROVERKEN A.B. April 19, 1963 [April 25, 1962], No.15469/63. Heading F2X. [Also in Divisions B1 and B2] A concrete or like vibrator comprises a casing having a cylindrical interior surface with which an eccentric rotatable mass is in sliding contact for more than half its length. The mass may be a solid rod 3 machined to the shape illustrated in Fig. 3 or a metal dumbbell shaped tube (Fig. 2, not shown), whose ends are half-filled with lead or a cylindrical tube (Fig. 1, not shown) half-filled with lead. The space between the casing and the mass and its shaft 4 may serve as a lubricating channel.
Patent GB-1215875-A (GB)
Title: Improvements in or relating to motion transmitting systems, especially for digital step motors
IPC: H02K37/08
Filed: 1968-04-01
Abstract: 1,215,875. Toothed and friction gearing. MESUR - MATIC ELECTRONICS CORP. 1 April, 1968 [31 March, 1967; 30 Aug., 1967], No. 15489/68. Heading F2Q. [Also in Division H2] In an electric motor, a wobble plate armature 43 (Fig. 2) or 143 (Fig. 4), supported on an output shaft 35 or 135 by a universal ball-pivot 47 or 147 which is axially slidable on the shaft, is caused to wobble about its pivot by sequential energization of stator poles 20 or 125, 127 arranged in a ring or rings coaxial with the output shaft, the armature 43 or 143 having facial ring gears 50, 49 or 118, 119 engageable respectively with a fixed reaction ring gear 52 or 116 and a ring gear 40 or 140 secured to the output shaft. In Fig. 2, the gears 40, 49 have the same number of teeth, and the gears 50, 52 have slightly different numbers of teeth. In Fig. 4, the gears 119, 140 have slightly different numbers of teeth and the gears 118, 116 may have the same or slightly different numbers of teeth. Alternatively, friction gears may be used, with ridged, knurled, or rubber-faced engaging surfaces. The armature may be rigid or of a flexible material incorporating rigid or powdered magnetic material.
Patent GB-769289-A (GB)
Title: Improvements in or relating to urine calcium test
IPC: G01N31/02
Filed: 1955-05-31
Abstract: A diagnostic composition for detecting calcium in body fluids comprises oxalic acid, ammonium oxalate and a chemical buffer adapted to maintain the pH between 2.8 and 5.5, preferably between 4.0 and 5.0, when the reagent and fluid are mixed.  Buffers exemplified are (a) potassium acid phthalate and potassium acid phosphate; (b) potassium acid phthalate and one from monosodium maleate, malonate or succinate; (c) potassium acid phosphate and one from monosodium glutarate, itaconate malate, pimelate or pyrotatrate; (d) sodium acid phosphate or acid phthalate or bicarbonate.  A carbonate may be added to the mixture to produce effervescence and facilitate solution of the reagent and a pH indicator such as chorophenol red or bromicresol purple, may be added to indicate when the pH of the solution exceeds 5.5.
Patent GB-834421-A (GB)
Title: Quick starting oxygen producing apparatus
Inventor: BOVARD ROBERT M
IPC: A62B7/08
Filed: 1956-05-18
Abstract: <PICT:0834421/III/1> An oxygen producing candle comprises a body 42 of oxygen producing material having top and bottom parallel faces and an ignition core 43 in an opening through the body, the body being formed to provide after an initial burning period, a burning area which becomes smaller as it recedes from the core, whereby oxygen will be produced at a diminishing rate.  One or more oxygen generating candles, which provide respiration oxygen and heat until a chemical 12 of an oxygen generating canister in a breathing apparatus (see Group VI) begins to generate oxygen, are each located in a cup 15 inside a spring mounted below the canister. Each candle consists of a cylindrical body 42 of oxygen generating material with a downwardly tapering opening, the top of which is offset relative to the axis of the body to form a wall having a part of reduced thickness.  When this wall part has burned through, the burning area of the remainder of the candle progressively decreases.  A dimpled baffle 16, a screen 17 and a filter 18 are located above the candle. A detonating hammer 32 having a detachable cap 36 is fitted in a bracket below each candle.  On removal of a cotter pin 34, the hammer 32 is urged by a tension spring against a primer 25 in the candle. Specification 834,422 is referred to.
Patent GB-1503095-A (GB)
Title: Process for stimulating wool and hair growth
IPC: A61Q7/00
Filed: 1976-04-15
Abstract: 1503095 Stimulating growth of wool and hair IRKUT INST ORGANICHE KHIMII SIBIR OTDELENIA AKAD NAUK SSSR 15 April 1976 15594/76 Heading A5B In a method for stimulating the growth of wool or fur in a wool- or fur-producing animal, 1-chloromethylsilatrane of formula: is orally administered to the animal for an extended period e.g. 2 to 3 months.
Patent GB-784849-A (GB)
Title: Improvements in electrical measuring instruments
Filed: 1951-07-02
Abstract: 784,849. Moving magnet measuring instruments. ARON ELECTRICITY METER, Ltd., and RIORDAN, E. J. Oct. 2, 1952 [July 2, 1951], No. 15702/51. Class 37. [Also in Group XXXV] The eddy current damper cup 4, Fig. 10, surrounding the rotor magnet 1 is closed by a cap 7, Figs. 1 and 2, provided with four radially extending arms 7a each having a tapered positioning tongue 7b for engagement with a correspondingly located slot formed in a magnetic screen 24 or as at 18 formed in a non-magnetic sleeve 15 located within the screen 24. The spindle 2 secured to magnet 1 extends within tubes 9 and drives a pointer 60 through quadrant gear 12 and pinion 57. The deflecting coils 13 and if required ratio coils 14 are mounted on the damping chamber 4/7 so that they are supported by the arms 7a. The sleeve 15 closely embraces the coil assembly with tongues 7b fitting tightly into slots 18 and the upper end of sleeve 15 is closed by a magnetic screen plate 20 which is secured to sleeve 15 by tongues 22. The damping chamber 4/7 and tubes 9 and the surrounding sleeve 15 are all of highly conductive non-magnetic material such as copper. The zeroizing magnet 36 coaxial with rotor magnet 1 is angularly adjustable by rotating a cam eccentric 37 from screw 38 through screen cover plate 32. An adjustable magnetic shunt 41 mounted adjacent magnet 36 in the cover plate 32, Fig.. 12, controls the flux through screen 24 when the cover plate 32 is secured in position. The pinion 57 is mounted between the arms 50 of a bracket secured to a cruciform member 48, Fig. 11, which fits into notches 49 in the upper edge of screen 24 and contains the adjustable top bearing 46 for spindle 2 and is secured in position with the aid of a strip spring 61 engaging diametrically opposed slots, Figs. 7 and 8 (not shown), in the screen 24. The instrument movement is supported entirely by the dial plate 67 which is dished at 68 and has slots, Fig. 9 (not shown), engaged by lugs on the screen 24. The leads from the coils 13, 14 are taken through grommets 29 held by the cover plate 32. Reference has been directed by the Comptroller to Specification 660,894.
Patent GB-1055342-A (GB)
Title: Improvements in or relating to cable harnesses
Inventor: GOW QUINN WONG
IPC: H02G3/04
Filed: 1965-04-13
Abstract: 1,055,342. Cable harness. W.A.PLUMMER. April 13, 1965, No. 15749/65. Heading H2C. A harness for cables with branchouts is manufactured from two thin sheets of thermoplastic material laid one on top of the other by heat fusing the sheets along pairs of substantially parallel lines to form at least three flattened tubular passages communicating with each other at one end and open at the other, and removing material in excess of that forming the passages. At least one of the sheets is formed of at least two sections having tongue and groove means along adjacent lateral edges whereby the parts are interlocked to form the sheet. The material may be polyethylene or PVC. In a junction fitting 10, the formed harness is applied about the grouped terminal ends of cabling 12 by opening seam 22, and laying the main body of the cabling therein. The middle group is laid in central passage 32, the other two groups threaded through passages 31 and 33 and seam 22 closed.