baber/WOPTO huggingface dataset:
Patent GB-1447892-A (GB)
Title: Manufacture of ultra high frequency transistors
IPC: H01L21/265
Filed: 1973-11-06
Abstract: 1447892 Transistors LIGNES TELEGRAPHIQUES ET TELEPHONIQUES 6 Nov 1973 [10 Nov 1972] 51546/73 Heading H1K A U.H.F. transistor is manufactured from a semi-conductor substrate, having thereon a high resistivity epitaxial layer of the same conductivity type, by forming the emitter region by ion implantation through an emitter window in oxide layer, and subsequently annealing the device in an inert atmosphere with the window still open. The annealing may take 5-25 minutes at just below 1000‹ C. The substrate and epitaxial layer may be of N-type silicon with a thermally grown oxide layer thereon, the base region being formed by diffusion or implantation of boron ions. The emitter region is doped with arsenic ions. Further implantations may be made into the base region to reduce base contact resistance, and a deeper implantation to reduce general base resistance. Contacts to the regions may be of platinum alloyed with the silicon followed by layers of molybdenum and gold. A plurality of devices may be produced in a single substrate which is later subdivided.
Patent GB-1219104-A (GB)
Title: Fluid flow metering device
Inventor: CLEMENTS HUBERT JOHN TOPHAM
IPC: G01F15/00
Filed: 1967-11-13
Abstract: 1,219,104. Regulating fluid-flow. WALTER KIDDE CO. Ltd. Nov. 13, 1968 [Nov. 13, 1967], No. 51626/67. Heading G3H. A self cleaning flow metering device which may be used in the discharge head of a gas bottle, comprises a screw 10 provided with stepped bores 17, 18 and a wire 19 which has a limited degree of radial and axial freedom. The Specification sets out optimum dimensions for the bores and wire. Specification 1, 219, 105 is referred to.
Patent GB-1126672-A (GB)
Title: Sulphamylanthranilic acid amides and process for their manufacture
IPC: C07D307/52
Filed: 1965-12-06
Abstract: 1,126,672. Sulphamoylanthranilic hydroxylamides. FARBWERKE HOECHST A.G. 6 Dec., 1965 [8 Dec., 1964], No. 51658/65. Heading C2C. Novel compounds of the formula wherein R<SP>1</SP> is a benzyl, furfuryl or thenyl-(2) group, R<SP>2</SP> is a hydrogen or C 1-3  alkyl, R<SP>3</SP> is hydrogen or methoxy and X is Cl or Br are made either by reacting an appropriate 2,4-dihalo-5-sulphamoyl-benzoic hydroxylamide with an amine R<SP>1</SP>NH 2 , or by reacting a reactive derivative of a 4-halo-5-sulphamoyl-anthranilic acid, such as a halide or a symmetrical or mixed anhydride, with a hydroxylamine compound R<SP>2</SP>ONH 2 . 2,4 - Dihalo - 5 - sulphamoyl - benzoic hydroxylamide starting materials are made by treating the corresponding 2,4-dihalo-5-sulphamoyl-benzoic acid with thionyl chloride and reacting the resulting acid chloride with an amine R<SP>2</SP>ONH 2 . 4 - Halo - 5 - sulphamoyl - anthranilic acid halides and anhydrides are prepared from the free acid by standard methods for preparing acid halides and anhydrides. Pharmaceutical preparations having diuretic and saliuretic activity comprise the above compounds of the invention and a carrier, preferably in forms adapted to oral or parenteral administration.
Patent GB-1278619-A (GB)
Title: Continuous fermentation
IPC: C12M1/36
Filed: 1969-10-27
Abstract: 1278619 Sorbose by fermentation of sorbitol TANABE SEIYAKU CO Ltd 27 Oct 1969 [25 Oct 1968] 52457/69 Heading C2C [Also in Division C6] Sorbose is prepared from sorbitol by continuous fermentation of a nutrient medium with Acetobacter suboxidans ATCC 621, wherein the nutrient medium and an oxygen-containing gas are fed to, and the fermentation broth and exhaust gas are withdrawn from, a fermentation zone, variations in the rate of transfer of oxygen into the fermentation medium being detected by monitoring the variations in the partial pressure of oxygen in the exhaust gas to provide an error signal which is fed back to control the rate of feed of the nutrient medium and the rate of withdrawal of the fermentation broth to maintain the conditions in the fermentation zone substantially constant. Oxygen in the exhaust gas may be sensed by a membrane oxygen electrode or magnetic oxygen analyser. Fermentations to produce gluconic acid and 2-ketogluconic acid are also mentioned.
Patent GB-524653-A (GB)
Abstract: 524,653. Directive wireless systems. TELEFUNKEN GES. FUR DRAHTLOSE TELEGRAPHIE. Feb. 2, 1939, No. 3567. Convention date, Feb. 2, 1938. [Class 40 (v)] In a homing direction-finder of the type in which the voltage derived from two crossed frame aerials is periodically reversed in phase before being fed to the receiver proper the output from the latter being fed to an indicator through a synchronous reversing switch, means are provided for " marking " or modulating the voltage derived from one aerial so as to distinguish it from the voltage derived from the other. This serves to eliminate the 90 degree ambiguity produced by a crossed aerial system. In Fig. 2 the two crossed frames 1, 2 are mounted in the fore-and-aft and athwartship positions respectively. The frame 1 is continuously connected to the receiver proper 4, but the leads of frame 2 are periodically reversed by the change-over switch 3 in synchronism with the reversing switch 7 through which the indicator 8 is fed via the rectifier 6 from the receiver proper. A zero indication is given by the indicator 8 when the direction of the transmitter lies in the plane of aerial 1 or 2. In order to indicate the minimum corresponding to the transmitter lying in the fore-and-aft direction, the pick-up from frame 1 is given a distinctive note frequency by the modulator M, this frequency being filtered out by the filter 14 and applied to the indicator 15. The sense of the transmitter can be determined by disconnecting the frame 2, switching in the open aerial 9, and connecting an indicator 13 with the receiver by means of the synchronously-operated switches 10, 11 and 12 respectively. The aerials 1 and 9 together give a cardioid response so that observation of whether a minimum or maximum deflection is obtained by the instrument 13 determines the sense. Instead of using a separate instrument 13, the sense indication will show on the indicator 8 if the switch 7 is held in a particular position when switches 10 and 11 are moved into the sense position. In order to produce aural indications in the headphones 17, the switches 3 and 7 may be operated in the rhythm of complementary signals in which case the visual indicator 26, Fig. 5, may be fed from the receiver through a switch 23 which alternately charges two condensers 24 and 25, the voltage difference being indicated by the instrument 26. For use on short waves, the crossed frames may be replaced by a crossed Adcock system of aerials.
Patent GB-1206836-A (GB)
Title: Hydromassage bath installation
IPC: A61H33/14
Filed: 1968-11-06
Abstract: 1,206,836. Hydromassage Assemblies. JACUZZI RESEARCH Inc. 6 Nov., 1968 [6 June, 1968], No. 52538/68. Heading A4N. [Also in Divisions A5 and B1] A hydromassage bath comprises a bath 1 having end walls 7, 9 and vertical side walls 3, (5) and a bottom wall 11, the bath being preferably contoured for encouraging the user to take up a position along one diagonal, vertical flat surfaces (17), 19 being diagonal for receiving jet assemblies 25 recessed in the walls and connected to controllable air intakes mounted above them in the bath walls, and to a water pump 55, which supplies the jets with water from a drain opening (15), in the bottom wall 11, covering a hollow fitting 69 which is connected to the pump by a pipe 63 and, via a pipe 71 and a T-coupling 73, to a drain pipe 65, the connection to the drain pipe being blocked off by a plug (75) when the pump is in operation. The plug (75) is connected to a linkage actuated by a lever (77) in the overflow opening 13 placed in the end wall 7, the linkage being contained within the pipe 71, T-coupling 73 a pipe 79 which connects the overflow opening to the T-coupling. The jet assemblies 25 may be of the type disclosed in U.S.A. Specification 3,297,025.
Patent GB-1126967-A (GB)
Title: Improvements in or relating to side-delivery rakes
IPC: A01D78/00
Filed: 1965-12-13
Abstract: 1,126,967. Haymaking machines. DEERE & CO. 13 Dec., 1965 [11 Dec., 1964], No. 52916/65. Heading A1F. A rake-wheel type haymaking machine comprises an extended Z-shaped frame the two parallel limbs of which carry rows of rake-wheels and are so arranged that the two rows form a single echelon, the intermediate section extending obliquely between the two rake-wheel rows and carrying mountings for two transversely-spaced co-axial land-wheels. In one construction, short arms extend outwardly from points adjacent to the junction between the limbs and the intermediate section of the frame and these arms carry stub-shafts on which the land wheels are journalled. In another construction, an arched axle-structure passes over the mid-point of the intermediate section, to which it is attached by struts, and carries land-wheels on its lower ends. The rake-wheels are mounted on cranks attached by springs to rods longitudinally adjustable along the limbs. The device is towed by a drawbar pivoted near the centre of the frame.
Patent GB-1472312-A (GB)
Title: Artificial joints
IPC: A61F2/34
Filed: 1974-04-11
Abstract: 1472312 Hip-joint prostheses FELDMUHLE ANLAGENUND PRODUKTIONS GmbH 11 April 1974 [12 April 1973] 53122/76 Divided out of 1472311 Heading A5R A hip joint prosthesis comprises a ball member 10 having a generally part-spherical front surface and a rear surface having a polyhedral recess 20 so shaped to fit over the head 18 of a patients' femur 1 that has been complementarily shaped into a polyhedron, that when in the body of a patient the ball member will remain attached to the head of the femur solely by virtue of the shape of said polyhedral recess in its rear surface, and a socket member 14 having a generally concave hemispherical front surface and a rear surface for attachment to the patients' pelvic bone 13, at least the superficial parts of the ball and socket members consisting of sintered aluminium oxide having a purity greater than 99%, a density greater than 3.9 g/m<3> and a mean grain size below 10 Ám. The aluminium oxide has been sintered above 1700‹C. The ball and socket members may be internally reinforced by metal and their rear surfaces may be irregular and/or rough. The rear surface of the socket member has a tongue-like projection 21 secured to the pelvic bone by means of a countersunk screw 15. A part of the rear surface of the socket member comprises two planar surfaces 22 inclined to one another at an angle between 0‹ and 180‹.
Patent GB-1095637-A (GB)
Title: Improvements in the manufacture of threads, cords, ropes and like filamentary articles
Inventor: FELIX PIERRE
IPC: D01D5/42
Filed: 1965-12-13
Abstract: Threads, ropes, cords, &c. are manufactured by fibrillating a film of an oriented linear synthetic polymeric material by false-twisting the film while holding it under tension, and during the false-twisting subjecting it to a sharp change of direction. The film is stretched and then cut into strips, or vice-versa. The strips are false-twisted by means of a spindle having bars as twist locking means.  One or more of the fibrillated strips are twisted and, if necessary, a heat or other setting treatment applied to the twisted strands.  The film may be composed of a polyamide, polyolefine, polyester, polyvinyl chloride or its derivatives, or a polymer or copolymer of acrylonitrile.
Patent GB-1170454-A (GB)
Title: Improvements in or relating to Gauge Means
IPC: G01B7/06
Filed: 1966-12-02
Abstract: 1,170,454. Measuring thickness of a moving web, electrically. CONSOLIDATED PAPERS Inc. Dec.2, 1966 [Dec.6, 1965], No.54059/66. Heading G1N. The thickness of a travelling paper web W is measured by contacting one side of the web with an electromagnetic reactor 10 comprising a single coil wound on a soft iron core and contacting the other surface of the web with a soft iron shoe 12 so that variations in the thickness of the paper cause corresponding variations in the inductance of the coil, the shoe being held in contact with the paper by the magnetic field generated by the coil. The shoe 12 is preferably in the form of a roller 60. The reactor 10 may be of the form shown in Fig.2 of may be in the form of a roller, Fig.4 (not shown). In use, the reactor and the roller 60 are traversed conjointly across the width of the web, a switch 45 initiating the return to the starting position (shown) for the next traversal. In order to avoid breaking the web at the start of a traversal, the roller 60 is run up to speed before the web is contacted by the reactor by contacting the roller with the web and withdrawing it, then raising the reactor 10 to contact the underside of the web and finally lowering the roller 60 or raising the reactor 10 further until the roller again contacts the web. Cams 41, 43 control the raising and lowering of the roller and the reactor and a switch 44 introduces a temporary interruption in the traversal during the initial contact of the roller 60.
Patent GB-809247-A (GB)
Title: A method of electroplating non-conductive material
IPC: H05K3/10
Filed: 1957-11-15
Abstract: 809,247. Ornamenting. FURNESS, R. W. Nov. 15, 1957, No. 548/55. Class 93 [Also in Group XXXVI] A method of electroplating predetermined areas of non-conductive material, e.g. to produce a display sign, comprises coating the material with an adhesive, coating the adhesive with an electrically conductive substance e.g. chemically deposited silver, applying an acid-resisting substance, e.g wax or lacquer, to leave predetermined areas exposed, electroplating the areas. e.g. with copper and washing with a solvent for both the adhesive and the wax or lacquer to remove these substances, along with the silver, from the unplated areas. The solvent may be acetone or methyl ethyl ketone, and instead of silver, a minute deposit of nickelchrome followed by one of copper, botH vacuum-deposited, may be employed. The non-conductive material may be a sheet pierced with holes, the finished sheet comprising copper plated areas on each face connected by copper plating extending through the holes.
Patent GB-1084499-A (GB)
Title: Shrink-resistant fabric
Inventor: GEIPEL UDO
IPC: D04B1/02
Filed: 1965-12-24
Abstract: An interlock fabric has the yarn forming one layer composed of a crimped synthetic material such as nylon whilst the yarn for the other layer is composed of a natural material such as cotton.  The resultant fabric is bulked or wet treated to cause the layer composed of the synthetic yarn to shrink such that the loops of the other layer extend on both faces of the fabric beyond the surface of the other layer and form a covering for it.
Patent GB-1178939-A (GB)
Title: A Device for Use in Manually Moving and Steering an Air-Supportable Lawn Mower
Inventor: SVENSSON ERNST STURE LENNART
IPC: B62D51/00
Filed: 1968-11-21
Abstract: 1,178,939. Lawnmower. FLYMO S.A. 21 Nov., 1968, No. 55190/68. Heading A1F. A lawnmower of the kind supported by an air cushion is provided with a pair of links 4 rigidly interconnected and pivoted to brackets 3, a pair of wheels 7, and a handle 9 pivotable about the axis of the wheels. No downward force can be transmitted to the mower via the handle 9, but an upward force is transmitted when the handle 9 is urged on to buffers 10. Brackets 8 then prevent rotation of the mower relative to the links 4.
Patent GB-1335087-A (GB)
Title: Automatic battery charging circuit
IPC: H02J7/00
Filed: 1971-11-30
Abstract: 1335087 Battery charging systems MOTOROLA Inc 30 Nov 1971 [2 Dec 1970] 55432/71 Heading H2H A battery charging circuit comprises a rectifier 22 coupled to an A.C. source and a silicon controlled rectifier 25 connected in series with the battery 11 to be charged, the conduction of the silicon controlled rectifier being controlled in dependence on the battery temperature. A positive temperature coefficient thermistor 12 is connected to the battery in a unit 10 which has contacts 13-15 for connection to terminals 23, 24, 28 of the charging circuit. Initially the thermistor 12 has a low resistance and a transistor 31 is conductive, the voltage supplied to the base of a transistor 42 in a Schmitt trigger 41 varying in accordance with the battery temperature. When the resistance of the thermistor is low, the transistor 42 is switched on whilst a transistor 44 is switched off. A transistor 48 is therefore switched on and applies a gate voltage to the S.C.R. 25 which conducts to provide a high current charging path for the battery 11. An S.C.R. 91 is also conductive causing a light 90 to illuminate and indicate that charging is in progress. When the battery approaches full charge, the increase in battery temperature increases the resistance of the thermistor thereby decreasing the voltage at the base of the transistor 42. The Schmitt trigger changes state and switches off a transistor 58 causing an S.C.R. 64 to conduct. The S.C.R. 64 switches on a transistor 74 which connects the gate electrode of the S.C.R. 25 to earth so that the S.C.R. 25 is non-conductive. The rapid charging of the battery is therefore stopped and a trickle charge path is provided by a resistor 27. An S.C.R. 96 is also switched on to illuminate a light 95 which indicates that charging is completed. Since the S.C.R. 64 and the transistor 74 remain conductive as the battery cools down, further rapid charging is prevented.
Patent GB-1204355-A (GB)
Title: Input devices for pin carriages in calculating machines
IPC: G06C7/10
Filed: 1967-12-06
Abstract: 1,204,355. Keyboards for printers. OLYMPIA WERKE A.G. 6 Dec., 1967 [24 Dec., 1966], No. 55478/67. Heading B6F. [Also in Division G4] An input device for a ten-key calculating machine comprises a keyboard, each key being attached to the core 40 of a Bowden cable which terminates in a free end 400 for setting the pin carriage of the calculating machine, wherein the Bowden cables are all of equal length. The digit keys 14 are attached to stems 18 located in guides 4. The stems are shaped to provide hooks 23 co-operating with cut-away portions 9 of the guides 4. The cores 40 of the Bowden cables are shaped to provide heads 41 received in apertures 24 in the key stems. The sheaths 42 are formed with sleeves 44 on one end engaging keyhole slots 36 in a face plate 34. The other ends of the sheaths are attached to guide blocks 48 joined by a web 47 for attachment to a plate 52. The sleeves 44 and guide blocks 48 consist of a plastics material injection-moulded on to the sheaths. The cores 40 and heads 41 consist of a plastics material, the cores having an oval cross-section and transverse grooves to increase their flexibility. The function keys 16 are attached to stems 25 having an L-shaped cross-section and terminating in hooks 31 cooperating with the undersides of guides 5. Springs 33 are received in blind holes 11 to maintain the function keys in their upper positions.
Patent GB-1497799-A (GB)
Title: Device for sterilising the human female or male by ligation
IPC: A61F6/20
Filed: 1974-12-23
Abstract: 1497799 Ligature ring applicator I B YOON 23 Dec 1974 55549/74 Heading A5R A ligature applicator for applying resilient ligature rings for female or male sterilization comprises inner and outer relatively longitudinally movable tubes 1, 2 and an inner axially displaceable rod 5 which carries a resilient forceps 6. In use with the ligature rings 12 located in grooves 11 on an end of the inner tube 2 projecting beyond the outer tube 1, the rod 5 is displaced to project the forceps 6 out of the tube 2 whereby they spring apart for subsequent engagement with a body tube. The rod 5 is then retracted whereby the body tube is withdrawn into the inner tube 2 with the forceps 6 being closed against its natural bias by abutment with the inner surface of the inner tube. The outer tube 1 is then slid or, if screwed to the inner tube, rotated to displace the forward ring 12 onto the body tube. The rod 5 is then again projected to expel the body tube. Upon withdrawing the outer tube its resilient end 15 passes behind the now foremost ring 12 for subsequent application. The tubes can be manipulated by ring handles 7, 9 and a ring 4. The forceps and inner tube may have cutting edges. The inner and outer tubes may be lockable with respect to each other by a button or ratchet, Fig. 8 (not shown).  The applicator may be used in one bore of a double bored catheter or trocar, the other bore of which accomodates a laparoscope or culdoscope. The rings may be of resilient plastics or metal.
Patent GB-1474970-A (GB)
Title: Bipolar dual-slope analogue-to-digital converter
IPC: H03M1/00
Filed: 1974-12-24
Abstract: 1474970 Analogue - to - digital conversion MONSANTO CO 24 Dec 1974 [26 Dec 1973] 55716/74 Heading H3H [Also in Division G4] In a dual ramp analogue-to-digital converter, the algebraic difference between an input voltage Ei of unknown magnitude and unknown polarity and a reference voltage Vr=kV R  is integrated (A2, Fig. 1, T3, Fig. 2) for a predetermined period t 1  to t 2  and the V R  (1-K) is integrated for the return ramp and if the return ramp ends before a predetermined time t 3  (Ei positive) the complement of the count in the clock pulse counter is displayed with a + sign and if the return ramp ends after t 3  (Ei negative) the true count is displayed with a - sign. As shown 500 kHz clock pulses are counted by four BCD decades and flip-flops FF2, FF3, FF4 giving a total capacity of 80,000 but the display is connected only to the BCD stages and FF2 giving a range Œ1À9999, the count in these stages passing through 00000 at t 3 . The up ramp duration is between counts 00000 and 18000, detected by NAND 71 to cause FF1 to switch S 1 from Ei to V R . If the end of the down ramp occurs outside the count range 20,000 to 60,000, flip-flop FF5 disables drivers DD1- DD4 to blank out the digits ND1-ND4 as an overrange indication. The output of the end-oframp detecting comparator A3 is fed back to the integrator via a critically damped clamping circuit, ensuring only one pulse at the end of the return ramp and holding the integrator output at zero until the next conversion cycle begins when 5 Hz oscillator 27 and flip-flop FF1 switch S1 back to Ei.
Patent GB-1362663-A (GB)
Title: Cock for controlling the flow of natural or other gas to gas  burners
IPC: F16K3/04
Filed: 1971-12-01
Abstract: 1362663 Valves AUSTRALIAN CONTROLS MFG PTY Ltd 1 Dec 1971 [16 Dec 1970] 55779/71 Heading F2V A gas cock for controlling gas flow to a burner comprises a body member 18, Fig. 1, and a rotary control member 21 in face-to-face contact and formed with control ports 24, 26 through which gas flow is regulated by rotation of the control member. One of the ports, e.g. the port 24, has a generally L-shaped profile defined by a radial limb and a lateral limb, see Figs. 8a and 9a, and the other port 26 has a lateral projection projecting oppositely to the lateral limb. Thus when the control member is rotated from the closed position shown in Figs. 8a and 9a, the port 26 progressively opens the port 24. A simmer port 38 may be provided. Gas is supplied to the port 24 via a duct 11 and is discharged from the cock through an outlet passage 12. The control member is rotated by means 36, 39 which may include a knob (not shown). A spring 37 returns the control member to its off position if an attempt is made to adjust the cock to an unsuitably small setting. The spring 37 or a separate detent spring may co-operate with a number of detents formed in portion 39 to enable the control member 21. to be adjusted to particular settings.