baber/WOPTO huggingface dataset:
Patent GB-1152057-A (GB)
Title: Clutch Device for Controlling the Carrier Rods of Knitting Machines
IPC: D04B15/64
Filed: 1966-08-26
Abstract: 1,152,057. Knitting-machines. FABRIQUE NATIONALE D'ARMES DE GUERRE SOC. ANON. 26 Aug., 1966 [14 Sept., 1965], No. 38357/66. Heading D1C. A more positive connection is made between the friction bar and friction box of a straight-bar machine particularly at the commencement of the drive of the box and carries in each direction of traverse by providing an electromagnetic clutch arrangement which is energised to provide the coupling between the friction box and rod at this time. The friction rod it attached to a rack 17 which when the rod is moved rotates a pinion 14 keyed on a shaft 11. The shaft 11 also has keyed to it a disc 27 which is surrounded by electromagnetic windings which when energised cause the disc 27 to be rotational coupled to a disc 26 secured to a pinion 24 freely rotatable on shaft 11. The latter is geared to a rack 35 secured to the friction box whereby the friction rod and box are more positivey coupled whilst the electromagnet is operative.
Patent GB-809715-A (GB)
Title: Etching composition
IPC: C23F1/26
Filed: 1956-12-17
Abstract: 809,715. Etching. NORTH AMERICAN AVIATION Inc. Dec. 17, 1956 [Dec. 23, 1955], No. 38385/56. Class 100(2) An etching composition, especially for etching titanium, vanadium, silicon, germanium, zirconium and tantalum comprises an aqueous solution of 7-25 per cent preferably 8-20 per cent hydrogen fluoride and an amount of chromic anhydride or an alkali metal salt of chromic acid such that the atom ratio of fluorine to chromium is from 6 : 1 to 3.5 : 1. The hydrogen fluoride may be present in the form of compounds which yield it in solution, such as HBF4' H2TiF5 and H2SiF6. There may also be added 0.01-3 per cent, preferably 0.08-0.15 per cent, of an organic compound consisting of either a hydro-carbon derivative of sulphuric acid having an OM group directly attached to the sulphur atom, where M is hydrogen or an alkali metal, or a hydrocarbon glycol ether, the number of carbon atoms ranging from 6-22. Examples of the organic compound are sodium ethylbenzene sulphonate, potassium naphthylsulphonate, actyl-anthrylsulphonic acid, sodium salt of 1 - sodium carboxylate - 2 - N - octadecylcarboxamide ethylsulphonate, sodium salt of 1 - ethyl - 7 - ethyl - 4 - undecylsulphate, phenyl ethyl ether of diethylene glycol, 1,2 - diethoxyethane, di - menthylp-henyl tetraethylene glycol ether, dodecylbenzene sulphonic acid, hexane sulphonic acid, sodium dodecylnaphthyl sulphonate, sodium - 2 - ethylhexyl sulphate, and 1 - ethoxy - 2 - isopropoxy - 3 - ethylphenoxy propane. In a method particularly suitable for etching titanium, potassium fluoride is added to the composition during etching so as to precipitate the metal in solution, the ratio of KF to metal being from 1 : 5-2 : 1, preferably 2 : 5-1¢ : 1, so as to maintain the strength of the composition and a smooth rate of etching. Sodium fluoride may be used. A part of the composition may be withdrawn from the etching bath, the metal precipitated as above, and the composition returned to the bath. The metal may be suspended in the bath by vinylplastic-covered wires. The resist may be lead-backed tape, vinyl plastic coating, polyethylene on cotton tape with silicon rubber adhesive, or neoprene rubber paint.
Patent GB-326585-A (GB)
Title: Reversing action or mechanism designed for adaptation to all forms of propelling or driving machinery
IPC: F16H35/00
Filed: 1929-02-11
Abstract: 326,585. Barrell, G. N., and Collings, C. T. Feb. 11, 1929. Reversing-gearing provides for a forward drive through a clutch A, Fig. 1, connecting aligned driving and driven shafts 3, 27, and a reversed drive through two sets of cranks and connecting-rods and a clutch B on a countershaft. One linkage set 5, 7, 9, Fig. 2, drives part 8 of countershaft reversely, the connecting-rod 7 carrying a cross-pin 11 workingin a slot 13 in a frame 1 to ensure the reversal of direction. The other part 24 of the countershaft is connected to shaft 27 by two direct-driving crank-linkages 25, 26 in quadrature. Clutches A, B are engaged alternatively by a lever 18 which advances either cone 14 or cone 15, which tilts a lever 30 or 31 to tighten a clutch band.
Patent GB-970304-A (GB)
Title: Electric timepiece
IPC: G04R40/02
Filed: 1960-11-09
Abstract: 970,304. Electric timepieces JAHRESUHREN-FABRIK G.m.b.H., A. SCHATZ & SOHNE. Nov. 9, 1960 [Nov. 26, 1959], No. 38480/60. Heading G3T. An electric timepiece receives from a wireless transmitter a signal having a carrier frequency modulated by a 50 cycles per second mains frequency and comprises a demodulator and a driving mechanism operative in response to the demodulated signal. The driving mechanism may comprise a synchronous motor, Fig. 1, including a closed iron ring 1 having no residual magnetism, solenoids 2-11 and a magnetised disc 12-13. If the clock is of the type including a periodically closed switch the demodulated signal is rectified to charge a capacitor which discharges through a driving coil. The transmitter comprises a mains frequency modulated transistor oscillator having a sonic or ultra-sonic carrier frequency and is housed in a wall plug or a wall socket. The gearing may comprise magnetic discs instead of toothed wheels. An alarm movement may be operated by an additional capacitor.
Patent GB-1010068-A (GB)
Title: Production of acetic acid
IPC: C07C51/25
Filed: 1962-10-11
Abstract: A process for the preparation of acetic acid comprises contacting a gaseous mixture of 1 to 5% ethylene, less than 12% molecular oxygen, and 1 to 10% water vapour, at a temperature of from 150 DEG  to 300 DEG  C., with a catalyst at a pressure of from 150 to 1000 p.s.i.a. and separating the acetic acid from the reaction mixture. Catalysts may contain a salt or oxide of platinum or palladium and a salt or oxide of vanadium, cobalt, manganese and molybdenum, which may be on a support such as a -alumina, silicon carbide or silicon dioxide. The exhaust gases may be recycled and air may be used as the source of molecular oxygen.  An example describes the process with the aid of a flow sheet.  Specification 971,100 is referred to.
Patent GB-1442110-A (GB)
Title: Drying of hydrocarbons
IPC: C10G33/00
Filed: 1974-09-04
Abstract: 1442110 Drying hydrocarbons BRITISH PETROLEUM CO Ltd 4 Sept 1974 [20 Sept 1973] 38636/74 Heading C5E A liquid water phase is separated from an emulsion of water in hydrocarbon oil by passing an inert gas (e.g. air, nitrogen or hydrogen) through the hydrocarbon at 0-60‹ C. A gas oil 1, boiling at 164-356‹ C. and containing 800 p.p.m. water is treated in a column 4 by passing a gas stream 17 through the column and separated water is removed at 22, the treated oil 6 is passed through a second column 9 in which it is dried by a dry gas stream 14 passed into the bottom of the column; the columns 4 and 9 can be packed.
Patent GB-900327-A (GB)
Title: Improvements in or relating to hydraulic clamping or piercing systems and the like
Inventor: BABBS FREDERICK WILLIAM
IPC: F15B7/08
Filed: 1960-11-11
Abstract: 900,327. Hydraulic intensifiers. COX OF WATFORD Ltd. March 28, 1961 [Nov. 11, 1960], No. 38766/60. Class 69 (2). An hydraulic intensifier for a clamping, piercing or like system comprises an hydraulic piston 7 and cylinder 5 for supplying fluid under pressure to clamping, piercing or like heads 2, 3, and means 14 whereby the fluid in the cylinder is automatically replenished when the piston is in its fully retracted position. The piston 7 is connected by a rod 8 to a largediameter piston 9 movable in a cylinder 4 by compressed air to cause the piston 7 to pressurize fluid in the cylinder 5, pipes 6, 6<SP>1</SP> and the heads 2, 3. The pistons are urged to a retracted position by a spring 10 in which position a reservoir 13 is connected by a pipe 16, passages 14 and orifices 15, 17 to the rear and front of the piston 7. A seal 11 is positioned at the end of the cylinder 5. Liquid is drawn into, and expelled from, the space behind the piston during its reciprocation and in its rearward position liquid is admitted through the orifices 17, which are smaller than the orifices 15, to the space in front of the piston to replenish losses in the system caused by leakage.
Patent GB-339800-A (GB)
Title: Improvements in pilger tube rolling mills
IPC: B21J7/18
Filed: 1929-12-18
Abstract: 339,800. Witkowitzer Bergbau-und Eisenh³tten - Gewerkschaft, and Tschulenk, L. May 16, 1929, [Convention date]. Rolling tubes ; feeds for rolling mandrel carriages; separating mandrels from work.-A hollow block 14 on hollow mandrel 13 is rolled into a tube by more than two pilger or segmental rolls 1 which are oscillated to and fro by double acting hydraulic pistons 7 moving a slide 5 to which all the rolls are connected by pivoted rods 4. The work 14 also oscillates along with the rolls by means of the extended piston rods 8 connected to a crosshead 9 detachably connected to the feed spindle 11 which also gives a step by step forward feed by a roller 16 driving intermittent toothed gearing 15. When the tube is completed it projects on the mandrel into guide trough 27 adjusted for height and diameter of tube by screw wedges. The crosshead 9 is detached from driving connection with the feed spindle 11 carrying the mandrel by raising the fork 17 which unlocks the nut 10 from the crosshead. A stripper 18 is then dropped by hand or hydraulically to foul the completed tube edge and the mandrel is withdrawn by two hydraulic pistons 22 the crosshead 23 of which engages a stop 24 on the feed spindle 11 of the mandrel. The finished tube is removed and a fresh block is placed by crane between the roll housing 2 and the mandrel. The mandrel is then moved back towards the roll housing by piston 22 the crosshead 23 of which engage and moves it into the crosshead 9 to which it is reconnected by dropping fork 17 and then the rolling proceeds as before. A spring 15 is interposed between the mandrel and the feed spindle, but fluid pressure may be used.
Patent GB-917355-A (GB)
Title: Method of manufacturing synthetic fibres of polyvinyl alcohol
IPC: D01F6/14
Filed: 1960-11-14
Abstract: An aqueous polyvinyl alcohol solution containing boric acid is wet- or dry-spun and the filaments so formed washed with water to remove boric acid, dried, and then hot-stretched.  Hot-stretching may be followed by further treatments, e.g. heat-treatment or chemical treatment, e.g. acetalization.  In a preferred method, the solution is wet-spun into an aqueous coagulating bath containing an inorganic salt, stretched in a wet state at room temperature, and/or in a hot aqueous solution of an inorganic salt, washed with water to remove boric acid, dried, and further hot-stretched.  Polyvinyl alcohol having an average degree of polymerization of 1,000-2,500 may be used in aqueous solutions of 11-25% by weight concentration containing 0,4-1,5% by weight, based on the polyvinyl alcohol, of boric acid, and wet-spun into coagulating baths containing 480-530 g./l. ammonium sulphate, 0-10 g./l. ammonium hydroxide, and 0-15 g./l. boric acid at 20 DEG -45 DEG C. An alternative coagulating bath contains 380 g./l. anhydrous sodium sulphate and 3 g./l. sodium hydroxide, and is used at 30 DEG C. In a dryspinning method, polyvinyl alcohol having an average degree of polymerization of 1,700 is used in aqueous solution of 30% by weight concentration containing 0,4% by weight, based on the polyvinyl alcohol, of boric acid, dry spun in an air bath, and the filaments formed washed with water, dried, and hot-stretched. Filaments so formed are then subjected either to 100% wet stretch at room temperature followed by 150% hot wet stretch, or to 400% hot wet stretch.  Hot wet stretching in either case is effected in a hot aqueous inorganic salt solution, e.g. 29-30%, or 49-50%, ammonium sulphate at 90 DEG -92 DEG C., and is followed by water-washing, drying, hot stretching and heat-treatment at constant length, e.g. in air, or in baths of polyethylene glycol, silicone oil, solder, or Wood's metal, at 230 DEG -240 DEG C.  Filaments so made show enhanced strength and resistance to hot water.
Patent GB-996384-A (GB)
Title: Railway route setting apparatus
Inventor: CHALLIS ERNEST WALTER
IPC: B61L19/06
Filed: 1960-11-14
Abstract: 996,384. Route setting. WESTINGHOUSE BRAKE & SIGNAL CO. Ltd. Sept. 25, 1961 [Nov. 14, 1960], No. 39042/60. Heading B7N. In a railway signalling system a route selection relay when energized operates a route setting relay if interlocking conditions permit and is held energized until either the route section is occupied or a cancel switch has been operated. A route through a points set to reverse is selected by operation of switch UN which operates route selection relay UR at contact 1UN. This operation releases a slow release relay 1NR and if interlocking conditions permit points setting relay 1LR is energized to its reverse position during the release period of relay 1NR via contacts lUR-c and 1NR-a. Relay 1UR is held operated via a contact 1KN of a release key and a contact 1TSR-a of a normally energized signal disengager relay. When the route signal is operated to the proceed aspect an approach lock stick relay 1ALSR is released at contact 1RGPR of the signal's red aspect proving relay. Entry of a train into the section releases the signal disengager relay which releases the selection relay 1UR and energizes the approach relay at its contact 1TSR-d. The consequential energizing of relay 1NR allows relay 1LR to be operated to its normal position. The route may be cancelled by release of switch contact 1KN, this releases relay 1UR which switches the signal to red aspect and energizes relay 1NR. At contact 1NR-c a delay circuit is energized which on termination of the delay energizes relay 1TER. This energizes relay 1ALSR at contact 1TER-c thus completing the circuit for the normal coil of the setting relay 1LR.
Patent GB-1513406-A (GB)
Title: Cleaning of membrane surfaces
Filed: 1975-09-24
Abstract: 1513406 Cleaning membrane surfaces UOP INC 24 Sept 1975 39082/75 Heading B1X A method of cleaning the surface of a membrane used in a separation process and having material accumulated on its surface comprises repeatedly driving liquid droplets across the surface propelled by a gas stream at superatmospheric pressure to effect removal of the material without damage to the surface.
Patent GB-985065-A (GB)
Title: Ingot
IPC: B22D5/00
Filed: 1962-10-17
Abstract: 985,065. Castings. PECHINEY COMPAGNIE DE PRODUITS CHIMIQUES ET ELECTRO-METALLURGIQUES. Oct. 17, 1962 [Oct. 18, 1961], No. 39323/62. Heading B3F. [Also in Division B8] An ingot 1 for stacking comprises two rectangular parallel bases joined by lateral faces, 2, 4, one of the two bases carrying at least one nipple 3 and the two larger faces 4 having grooves 5 to receive the nipples of other ingots. The ingots are stacked in layers, each layer being at right angles to the adjacent layers, and the ingots of each layer being arranged alternately with one or the other base uppermost. The end of each ingot may have a notch 6 for binding strips.
Patent GB-1152425-A (GB)
Title: Improvements in or relating to piston type internal combustion engines
Inventor: POTT LESLIE
IPC: F01L7/06
Filed: 1966-09-02
Abstract: 1,152,425. Rotary valve engines. L. POTT. Feb.20, 1967 [Sept.2, 1966], No.39348/66. Heading F1B. In an I.C. engine in which admission and exhaust is sequentially controlled with a rotary or semirotary valve and the pistons have extensions 18, 19, Fig. 4 shaped and arranged to correspond with and co-operate within the passages 22, 23 connecting the engine cylinder to the valve, the combustion space contained within the passages is reduced wholly or in part by the extensions when the pistons are in the t. d. c. position. Each piston has a pair of circumferentially disposed extensions 18, 19 co-operating with passages 22, 23 and an intermediate extension 18a co-operating with passages 24, 25. The rotary valve (not shown) rotates at 1/10th crank-shaft speed. In a modification exhaust deflection passages are arranged in the extensions 18a, 19a. In further embodiments a single cylinder engine has five piston extensions (11, Fig. 1, not shown) and a twin-cylinder engine has symetricallyarranged pairs of piston extensions (14, 15, Fig.2, not shown). The top face of the piston extensions may be curved or inclined.
Patent GB-1522535-A (GB)
Title: Method of surface treatment of a steel component
IPC: C25F1/00
Filed: 1976-09-23
Abstract: 1522535 Electrolytic treatment of steel CENTRO SPERIMENTALE METALLURGICO SpA 23 Sept 1976 [26 Sept 1975] 39440/76 Heading C7B Steel is electrolytically activated alternately as cathode and anode (in either order) in an aqueous mineral salt solution at pH 6-8, at 20-100C, for 0À1 - 60 sec using a c.d. of 1-60 A/dm<SP>2</SP> to produce a product suitable for electro-plating. A solution of 0À5 - 2À5M Na 2 SO 4  may be used to activate steel prior to Sn plating.
Patent GB-941772-A (GB)
Title: Improvements in thermoelectric devices
IPC: H01L35/16
Filed: 1959-11-20
Abstract: The invention relates to a thermo-electric element of non-homogeneous composition (see Division H1).  The following alloys for thermo-electric elements are mentioned:  61.95-63% Pb with balance Te and a trace of Al, Bi, Br, Cl, Ga, I, Mn, Ta, Ti or Zr, (2) 72.45-73.5% Pb with balance Se and trace of Al, Sb, Bi, Br, Cl, Cu, F, Ga, Au, I, In, Nb, Si, Ta, Ti or Zr, (3) 86.63 to 87.10% Pb with balance S and a trace of Sb, Bi, Br, Cl, Ga, I, In, Nb, Ta, Ti, U or Zr, (4) 59.0 to 61.8% Pb with balance Te and trace of K, Na or T1, (5) 69.9-72.0% of Te with balance Mn and a trace of K or Li. Specification 898,135 is referred to.
Patent GB-1271345-A (GB)
Title: Coating apparatus
Inventor: SHIELDS ALBERT F
IPC: B31B50/62
Filed: 1970-08-17
Abstract: 1,271,345. Coating apparatus. S. & S. CORRUGATED PAPER MACHINERY CO. Inc. 17 Aug., 1970 [15 Dec., 1969], No. 39558/70. Heading B2L. Apparatus for coating either the upper or lower surfaces of box flaps with glue comprises an applicator roller 50 driven by a unidirectional motor 48 the arrangement being such that if the lower surfaces are to be coated the flaps are fed over the roller via a guide channel 64c and if the upper surfaces are to be coated the flaps are fed under the roller through a channel 59c, the roller 50, drive 48 and pressure members 60, 70 being mounted on a frame 18 which can be moved vertically on a lead screw 19 so that the appropriate feed channel is adjacent the line of feed of box flaps. In order to remove the necessity for reversing the drive direction of the electric motor. 48 the motor and coating wheel are mounted on a further frame 15 which is rotatable about an axis defined by shafts 38, 39 located in the frame 18. Rotation of the frame 15 through 180‹ effectively reverses the direction of rotation of the wheel 50. The pressure means 60, 70 each comprise a roller such as 58 mounted on an arm 51 pivoted at 52 and urged by a spring 53 towards the roller 50. Two such arms may be provided one above and one below the roller 50 or parts may be transferable from one position to another when it is desired to change the mode of operation of the machine. Glue may be fed to the roller from a nozzle (not shown) which sprays directly on to the peripheral surface. An adjustable doctor blade 75 is provided to spread the glue thus applied to the surface of the roller and excess glue is drained through a sump back to the supply container.
Patent GB-1427250-A (GB)
Title: Assembly for the rejuvenation of cathode-ray tubes of tv-sets and for the visual check of cathode conditions
IPC: H01J9/42
Filed: 1973-08-15
Abstract: 1427250 Cathode-ray tubes SAFE ELECTRONIC SYSTEMS SA 15 Aug 1973 [25 Sept 1972] 39566/73 Heading H1D [Also in Division H4] An assembly for the rejuvenation of cathoderay display tubes and for the visual check of cathode conditions comprises first and second voltage converters S1, S2, the former, S1, having input terminals A, B connected to the primary of a mains transformer for, e.g. 220 V A.C. operations and the latter, S2, input lines 1, 2 connected either to the primary of the transformer in converter S1 or, alternatively, to a voltage source in the range 220 to 6000 V. Each converter has a plurality of output terminals to which controlled voltages may be supplied and converter S2 is additionally connected via further input lines 3, 4, to output terminals C and D of converter S1. In operation, when it is required to rejuvenate the tube, terminal C is connected to the tube cathode terminal D is connected to the first grid and terminals E and F are connected to the heater. An A.C. voltage in the range 6 to 12 V is then applied to terminals E and F and the heater is overheated for a period between a few seconds and a few minutes. A voltage in the range 50 to 5000 V is then applied to terminal D for a period ranging between one minute down to a quarter of a second (depending on the magnitude of the applied voltage) and the tube is thus rejuvenated. When the tube is a threegun colour tube each gun may be treated as described above or the converter S1 may be fitted with three separate sets of terminals. When a visual check on the cathode condition is required (even after it has been rejuvenated) terminals E1, F1 are connected to the heater, terminal C is connected to the cathode, terminal H, to which a voltage of between 0-50 V is supplied, is connected to the first grid, terminal L to which a voltage of between 150 and 400 V is supplied, is connected to the first anode, terminal M to which a voltage of between 100 and 300 V is supplied is connected to the second anode (focusing anode) and terminal AT, to which a voltage of between 4000 and 7000 V is supplied, is connected to the main anode. By manually varying the above voltages within the ranges indicated a disc-shaped image of the cathode is produced on the screen and if such image is luminous and uniform the efficiency of the tube is considered to be very good. If the image is speckled, the tube should be subjected to one or two rejuvenation cycles as described above. The various voltages produced by the converters S1, S2 may be either direct, alternating or pulsating and the converters are provided with either manual or automatic control devices controlling the magnitude and durations of the voltages applied to the tube.
Patent GB-1309010-A (GB)
Title: Carbonate polymer
IPC: C08G64/00
Filed: 1970-08-18
Abstract: 1309010 Copolycarbonate-phosphite GENERAL ELECTRIC CO 18 Aug 1970 [19 Aug 1969] 39781/70 Heading C3R A polycarbonate resistant to discoloration at high temperature is prepared by reacting a diphenol, e.g. bisphenol-A, with a carbonate precursor, e.g. phosgene, in the presence of a phosphorus trihalide, preferably PCl 3 , an acid acceptor, e.g. calcium hydroxide plus ethylamine, and a chain terminator, e.g. p-tert.- butylphenol. The copolymer contains 0À0005 to 1À0% by wt. of phosphorus. The polymer derived from bisphenol-A is claimed per se.
Patent GB-1362824-A (GB)
Title: Photographic enlarging apparatus
IPC: G03G15/041
Filed: 1971-08-25
Abstract: 1362824 Photographic enlargers PENTACON DRESDEN KAMERA-UND KINOWERKE VEB 25 Aug 1971 39797/71 Addition to 1319668 Heading G2A In microfilm re-enlargement apparatus having interchangeable lenses 2, 3 mounted on a slide 1 and a signal lamp 10 indicating copying readiness and the size of the microfilm to be re-enlarged, the lamp 10 does not come on if the film frame to be imaged is in a viewing rather than a projecting position. As shown, the lens 3, of short focal length, is in the copying position. If a normal size frame is in the copying position, a switch (15) Fig. 2, (not shown) is closed, thus closure of a switch (13) causes the lamp 10 to light, thus illuminating a field 8. This in turn indicates that a normal size frame is in the copying position. If the frame is in the viewing position, switch (15) remains open, so the field 8 will not be illuminated. For the lens 2, of long focal length, a further switch (14) acts similarly to the switch (15), but for double size film frames. Changeover to the lens 2 automatically uncovers a second field 9 thus indicating a double size film frame.