baber/WOPTO huggingface dataset:
Patent GB-740512-A (GB)
Title: Improvements in or relating to the production of current pulses through the winding of an electro-acoustic transducer by capacitator discharge
IPC: G01S1/72
Filed: 1953-10-06
Abstract: 740,512. Systems of charging and discharging condensers. ATLAS-WERKE AKT.-GES. Oct. 6, 1953 [Oct. 6, 1952; Dec. 1, 1952; Feb. 16, 1953], No. 27414/53. Class 38 (4). The winding 8 of an electro-acoustic transducer, such as a magnetostriction transducer used in echo-sounding apparatus, is pulsed by the charging and discharge currents of a condenser 7, the winding and condenser in series being alternately connected across different voltage sources of low internal resistance, or across a single low-resistance voltage source alternately reversed in polarity. In the arrangement shown, when cam-operated contacts 6 (controlled by a uniformly rotating shaft 4) close, a charging pulse flows into condenser 7 from a large reservoir condenser 3 over closed contacts 12 operated by a cam 11 driven by a shaft 10 at half the speed of shaft 4. Condenser 3 constitutes one voltage source and is permanently on charge from a battery 1. After one revolution of shaft 4, contacts 6 again close and condenser 7 discharges through winding 8 over contacts 13, which are now closed, and a short-circuiting conductor 14 which may be regarded as a source of zero voltage. Contacts 12 are open during this phase. In another arrangement, Fig. 2, a spark gap 15 is in series with the condenser 7 to limit the voltage to which it can discharge and further cam switch 17, 19, 21 is provided for alternately reversing the connections of the condenser 7 to condenser 3, whereby the effective change of voltage across the condenser 7 may be made double the voltage of the battery 1.
Patent GB-1400466-A (GB)
Title: Terminal for flexible circuits
IPC: H01R12/68
Filed: 1972-06-12
Abstract: 1400466 Clip &c fastenings MOLEX Inc 12 June 1972 [28 Sept 1971] 27417/72 Heading E2B [Also in Division H2] A socket contact 10 for mounting on a flexible circuit 12 comprises a conductive body having a planar portion 20 with tangs 26 extending therefrom adapted to be forced through from one side of the circuit and crimped towards the other side to connect with a conductor 30 and to mount the contact on the circuit, the portion 20 having slots 34-38 which form two spaced parallel arms 40, 42 with opposed portions 44, 46 for bearingly receiving a male contact 14 to have an interfering fit therebetween. The contact 10 is pressed from one piece of sheet metal with a rim 22 and four tangs 26 and is mounted over an aperture 33 in the circuit 12.
Patent GB-533659-A (GB)
Title: Improvements in or connected with shaking chutes for dealing with material such as coal
IPC: B65D90/62
Filed: 1939-10-07
Abstract: 533,659. Jigging shoots. MAVOR & COULSON Ltd., and THOMSON, J. Oct. 7, 1939. No. 27440. [Class 78 (i)] In a jigging shoot forming the deliverymeans from an endless-belt conveyer which is made in two parts pivoted together so that one part can be lowered for anti-breakage purposes. the lowering of this part below a predetermined inclination automatically opens a discharge gate at the lower end of the shoot. As shown applied to the loading of trucks in mines, the two portions 1, 2 of the shoot which are pivoted at 3 are reciprocated by rods 14 connected to levers 15 oscillated by a crank. When the tub E has been run underneath, the attendant lowers the section 2 by hand or power against the action of a counterweight on the rope 7 until it rests on the bottom of the truck as shown in dotted lines. The lowering action causes a pin 21 on the section 1 to exert a pull on a rod 20 and so release a pawl 19 from the hinged door 4, thus allowing the latter to fall forwardly and downwardly to deliver material. The section 2 is raised gradually as filling proceeds, and the final raising clear of the loaded truck causes a cam 25 to push a lever 24 and thus operate the rope 23 to re-close the door. A winding-drum driven by the motor D can be used to raise and lower the section 2.
Patent GB-472941-A (GB)
Title: Improvements relating to radio transmitting systems
IPC: G01S1/02
Filed: 1936-10-09
Abstract: 472,941. Directive wireless signalling. BERRY, R. J. (Lorenz Akt.-Ges., C.) Oct. 9, 1936, No. 27468. [A Specification was laid open to inspection under Sect. 91 of the Acts, April 12, 1937.] [Class 40 (v)] In a course-marking installation of the type described in Specification 405,727, comprising a transmitting dipole E and two reflecting dipoles R1, R2 which are alternately keyed by a commutator K and relays M1, M2, for defining an equisignal zone, a switch q is provided for energizing both relays simitltaneously to convert the installation into a single directional transmitter for message transmission by signal modulation.
Patent GB-1040718-A (GB)
Title: Methyl methacrylate polymers having flame retardant properties
Inventor: BASKETT ARTHUR COLIN
IPC: C08F259/04
Filed: 1963-07-11
Abstract: Fire retardant polymers are prepared by polymerizing in bulk methyl methacrylate monomer with or without a minor proportion of another copolymerizable monomer while in the form of a mixture with a vinyl chloride polymer or copolymer containing a major proportion by weight of vinyl chloride units or an after-chlorinated form of said polymer or copolymer, said mixture containing from 20 to 40% by weight of said polymer or copolymer or after-chlorinated form thereof and substantially no other polymer or copolymer. Comonomers for the methyl methacrylate include acrylic acid, methacrylic acid and esters of these acids, acrylonitrile, styrene and substituted styrenes, e.g. halo-styrenes.  The vinyl chloride copolymer may comprise units of vinyl acetate, vinylidene chloride, ethyl acrylate or acrylonitrile. Polymerization may be initiated by heat or light preferably in the presence of a catalyst such as a ,a 1-azodiisobutyronitrile, benzoyl peroxide or lauroyl peroxide for heat polymerization, or benzoin, acetoin, butyroin or diacetyl for light activated polymerization.  A known flame retardant agent may be included in the polymerization mixture, e.g. a phosphate ester such as trischlorethyl phosphate or trisdibromopropyl phosphate, a chlorinated paraffin, or one sold under the Registered Trade Mark " Phosgard."  Other optional additives include dyestuffs, U.V. absorbers, heat stabilizers and plasticizers; exemplified are dibutyl tin dilaurate and 2,4 - dihydroxy - benzophenone.  The polymer products may be formed into articles or sheets, and the polymerization mixture may be incorporated into woven or non-woven mats or layers of glass fibres to form reinforced sheets on polymerizing.  Examples illustrate the polymerization of methyl methacrylate in the presence of (a) vinyl chloride/vinyl acetate copolymer, (b) vinyl chloride/vinylidene chloride copolymer and (c) chlorinated polyvinyl chloride.
Patent GB-509965-A (GB)
Title: Improvements in and relating to methods of coating metals
IPC: C25D5/10
Filed: 1938-09-21
Abstract: 509,965. Electroplating. BRITISH THOMSON-HOUSTON CO., Ltd. Sept. 21, 1938, No. 27539. Convention date, Sept. 22, 1937. [Class 41] A copper article is coated with silver by first dipping in an acid solution, or an alkaline solution followed by an acid solution, to brighten the copper, coating electrolytically with mercury and electrolytically depositing silver on the mercury surface before any substantial oxidation of the mercury occurs. The mercury-plating solution may contain 1¢ ozs. of mercuric chloride, 4 ozs. of sodium cyanide, 2 ozs. of ammonium chloride, and 1 gallon (U.S.A.) of water. The ferrous metal tank serves as anode. A current of 10-15 amps. per sq. ft. is applied for 3-5 seconds. The article is rinsed in water and transferred to a silver-plating solution containing 4 ozs. of silver cyanide, 6 ozs. of sodium cyanide, ¢ oz. of ammonium chloride and 1 gallon (U.S.A.) of water. Specifications 476,375, [Group XXII], and 492,088 are referred to.
Patent GB-519630-A (GB)
Title: Improvements in or relating to vacuum cleaners
IPC: A47L5/22
Filed: 1938-09-22
Abstract: 519,630. Centrifugal fans. WHITAKER, A., and BARNES, N. Sept. 22, 1938, No. 27648. [Class 110 (i)] The discharge of the impeller is divided peripherally and passes to several overlapping volutes which lead to a common outlet passage. The part 14b, Fig. 2, of the first volute 14 curls out of the plane of the impeller and becomes the passage 16. A second volute is shown at 15. Both are extended laterally to keep the outside dimensions small. The volute 14 is open at 21 to the outlet 17 and the commencement of the second volute is open to the neighbouring part of the first volute.
Patent GB-1261787-A (GB)
Title: Improvements relating to gas lasers
Inventor: CHILCOT ARTHUR LESLIE
IPC: H01S3/038
Filed: 1969-05-31
Abstract: 1,261,787. Lasers. FERRANTI Ltd. 13 May, 1970 [31 May, 1969], No. 27707/69. Heading H1C. A gas laser pumped by a cold cathode discharge has a hollow cylindrical Fe-Ni cathode 13 coated with an oxide layer. The discharge takes place mainly on the inner surface of the cathode, and the current density at the surface does not exceed 5 ma. per sq. inch. The cathode has an aspect ratio (i.e. length to internal diameter ratio) in the range 1-6, preferably 4-6. The discharge passes from the cathode to an anode 9 via a narrow bore tube 2. The end of the cathode remote from the connecting tube 12 may be closed. The oxide layer is formed by heating the cathode for an hour at 650‹ C., and has a resistance of 1000 # per sq. cm. The construction of the cathode and the current density minimizes sputtering and absorption of the gaseous active medium. The cathode may contain 40% Ni.
Patent GB-884861-A (GB)
Title: Improvements relating to gramophones
Inventor: HUMBY EDWARD THOMAS
IPC: F16H15/46
Filed: 1960-08-13
Abstract: 884,861. Change-speed friction gear. COLLARO Ltd. July 1, 1960 [Aug. 13, 1959], No. 27725/59. Class 80 (2). [Also in Group XXXVIII] In a gramophone change-speed gear wherein a rubber idler 8 frictionally engages a multistepped driving wheel 6 on a constant-speed motor spindle 7 and a driven turntable 2, a first mechanism manually operated by a knob 37 controls a motor switch 59 and laterally moves the idler so that when the switch is open the idler is disengaged and when the switch is closed the idler is engaged, a second mechanism manually operated by a knob 31 axially shifts the idler into register with any one of driving wheel steps 20-23, and the two mechanisms are so interconnected that operation of the second mechanism when the switch is closed and the idler engaged causes the first mechanism to open the switch and disengage the idler before the latter is registered with another driving wheel step. The first mechanism comprises a plate 43 which when substantially longitudinally moved by the knob 37, through a quadrant eccentric 38, a rod 41 and a lost motion connection 42, controls the switch 59 through a bell-crank lever 51 pivoted at 48 and laterally moves the idler 8 through the bell-cranked lever 51, a spring and lost motion connection 55, 54, and a link 53 pivoted to an arm 12 pivotally supporting the idler through an arm 10. The second mechanism comprises a cam plate 24 which is guided in a slot 29 in a fixed plate 15 and by a spindle 35 of the knob 37, is longitudinally moved by the knob 31, an eccentric peg 32 engaging a slot 34 in an extension 30 of the cam plate 24, and axially shifts, against a return spring 37a, a carrier 14 on which the arm 12 is pivoted, a rivet 18 on the carrier coacting with earn surfaces 25-28 on the cam plate. The plate 43 is held in the switch closed, idler engaged position, against a spring 44 by a fixed pin 61 engaging a notch 62 in the plate. A trigger member 63 pivoted on the cam plate extension 30 is urged by a spring 65 to engage one of cam notches 66-69 thereon with a further fixed pin 70 and engages a pin 45 on the plate 43. In operation, longitudinal movement of the cam plate 24 and hence of the trigger member 63, when the pin 61 is engaged in the notch 62, causes the trigger member 63 to be cammed away from the pin 70 and to act on the plate 43 through the pin 45 thereby releasing the notch 62 from the pin 61. The plate 43 is then spring urged to move to the switch open, idler disengaged position before the cam plate 24 can register the idler with another driving wheel step. When the cam plate movement is completed the pin 70 is engaged in the next notch in the trigger member 63 which permits the pin 61 to engage the notch 62 when the plate 43 is moved again by the knob 37 to the switch closed, idler engaged position.
Patent GB-419135-A (GB)
Title: Improvements in or relating to fluid pumps and motors
IPC: F01B3/00
Filed: 1933-03-27
Abstract: 419,135. Cam-actuated pumps. GREENAWAY, F G., 34, Shirehall Park, Hendon, Middlesex, and WELDING, G. L., 1, The Pleasance, Dunstable, Bedfordshire. March 27, 1933, No. 27752/34. Divided out of 418,584. Drawings to Specification. [Class 102 (i).] The description and drawings are the same as in Specification 418,584, but the balancing of the thrusts of the driving mechanism and of the valve is not limited to the particular apparatus described.
Patent GB-427022-A (GB)
Title: Improvements in and relating to dark slides for photographic apparatus
IPC: G03B27/58
Filed: 1933-10-09
Abstract: 427,022. Roll-film dark slides. SALCHOW, W., 85, Dammweg, Treptow, near Berlin. Oct. 9, 1933, No. 27812. [Class 98 (i)] A dark slide for photographic copying- apparatus comprises a casing having a movable covering member, means for reciprocating this member, means connected to the reciprocating means for feeding the sensitive material past the opening exposed by the member, means for severing the exposed material and a collector for the severed sheets. In the form shown, a receptacle 17, Fig. 2, for the sensitive material is mounted on trunnions carried in slotted bearings 42, Fig. 13, on the casing 1 which are provided with locking members. The material passes by way of stretching rollers 23, 24 to the feed roller 19, thence under a pressure roller 25 and down the guide 26 to the exit slot 27 below which the collector 7 is mounted. The feed roller 19 is operated by a crank 20, Fig. 1, through a one-way clutch. The cover member 31, Fig. 13, is operated by a rack 32 through gearing 34, 37, 38, the gear 38 being mounted on the shaft of the feed roller. The gearing is such that the material moves faster than the cover member to provide unexposed gaps between the records. The cover is moved to open and close the aperture by one revolution of the crank in each direction, the one-way clutch preventing the feed roller, which is provided with a brake, from moving in the reverse direction. The knife 29 for severing the paper is carried in a slot at the base of the casing and operated by hand against a spring 86. The collector 7, Fig. 1, is mounted in slots below the casing and is provided with a sliding extension 12. A lamp 6, peep-holes 8, 9 and mirror 11 enable the operator to see that the severed sheets are being properly fed into the collector 7. To ensure that the collector is in correct position a lug 113 on the collector bears on a rod 111, Fig. 13, to remove a stop 110 from the teeth of the gear 38 when the collector is in place. The casing 1 has a removable plate 68, a sliding top plate 30 provided with a mirror and a pivoted cover 70 below this plate. If it is desired to expose less than the full area of the material, the movement of the crank 20 is limited by stop pins 91 on the casing.
Patent GB-1317762-A (GB)
Title: Method for manufacturing water dilutable vinyl synthetic resins based on polyesters
IPC: C08G59/14
Filed: 1970-06-09
Abstract: 1317762 Electro-phoretically coating with resin REICHHOLD-ALBERT-CHEMIE AG 9 June 1970 [11 June 1969 30 Jan 1970 31 March 1970] 27834/70 Heading C7B [Also in Division C3] Electrodiposition processes use as binder a composition comprising the reaction product of: (A) a diglycidyl ether:. having a molecular weight: of 380À3500, (B) a C 3-20  monohydric alcohol containing at least one ethylenic double bond. The product is then esterified with (C) at least one C 6-20  aliphatic ethylenically unsaturated acid, then (C) with an α, #-ethylenically unsaturated acid in the presence of other vinyl or vinylidene monomers and finally neutralised with ammonia or an organic nitrogen base until dispersable in water (see Division C3). In a typical example a mixture of diglycidyl ethers of bisphenol A is etherified with allyl alcohol and subsequently esterified with linseed oil fatty acids. The product is then treated with acrylic acid, styrene, peroxides and mercaptans. The product neutralised with ammonia was pigmented with titanium dioxide and aluminium silicate, dilute to 10 per cent by weight solids with water and coated on to zinc phosphated steel plates using 120 volts D.C. The resultant coating was stoved for 30 mins at 170‹C. Aminoplast and phenoplast resins may also be present.
Patent GB-478610-A (GB)
Title: Improvements in and relating to electric drives for rolling mills
IPC: B21B37/54
Filed: 1936-10-14
Abstract: 478,610. Automatic control systems. BRITISH THOMSON-HOUSTON CO., Ltd. Oct. 14, 1936, No. 27904. Convention date, Oct. 15, 1935. [Class 38 (iv)] Current strength.-In reversible rolling mills, the strip of material is kept under constant tension between the rolls and the winding and unwinding spools connected to winding and braking motors arranged in series, by a vibrating regulator adapted to maintain constant current in the motor circuit. The motors are provided with main windings of opposite polarity and additional windings of the same polarity connected in series. In the system shown in the Figure, the material is tensioned between the motor driven rolls I and the spools 3, 4 each connected to a machine 5, 6 in circuit with one another and with the auxiliary generator 7 driven from the motor 8, and regulated by a reversing switch 26, a resistance 28, and a rheostat 29 adjustable with the controller 30 of the motor 2 driving the rolls 1. The opposed main fields 11, 12 of the machines 5, 6 are supplied from a generator 9 also driven by the motor 8 and are controlled jointly and independently by resistances 20, 21, 25. The current through the additional fields 12, 14 is reversible so that either resultant field may be increased while the other is decreased, the current being supplied by a generator 10, the field of which is supplied from generator 9 through a bridge 17 and vibratory regulator 19 responsive to the current flowing in the circuit of the motors 5, 6 whereby the current and the tension in the strip are maintained constant. In a modification, the field 26 of the generator 7 is dispensed with and an additional motor driven from the shaft of the rolls motor 2 may be included in the circuit of the machines 5, 6.
Patent GB-323469-A (GB)
Title: Improvements in and relating to the pasteurisation of milk, cream and the like
IPC: A01J11/00
Filed: 1928-09-28
Abstract: 323,469. Templeton, A. H. Sept. 28, 1928. Sterilizing and preserving milk. - In an apparatus for deodorizing milk, cream, and the like during pasteurization, the gases and vapours evolved are removed by means of an ejector arranged immediately above the pasteurizer and connected thereto by means of a short length of straight flexible tubing. The ejector consists of pearshaped bulb 7A communicating through a passage 7B and a flexible tube 3 with the lid 1A of the pasteurizer. A tapered jet 10 supplies air, steam, or water, under pressure to actuate the ejector, and the exhausted gases are discharged through a pipe 11. The tube 3 is detachably connected to the lid 1A by means of a female union member 3A engaging with a screwed pipe 4.
Patent GB-1425889-A (GB)
Title: Process and installation for the treatment of water and other liquids
IPC: B01J47/10
Filed: 1973-06-12
Abstract: 1425889 Ion-exchange A B WASSERTECHNIK UND KUNSTSTOFFBAU GmbH 12 June 1973 [13 June 1972] 27938/73 Heading B1J A process for the treatment of and particularly the softening of, partially or fully desalting water, aqueous solutions, acids and other liquids comprising the steps of conducting the liquid being treated through a resinous-bed ion exchanger; withdrawing portions of exhausted ion exchanger resin in charges from said bed; regenerating said withdrawn resin by conducting a regenerating medium through said charge; and re-entraining said regenerated resin charge in said bed, further comprises conducting said liquid being treated with a vertical motion component from above downwardly into the inflow end of said bed and with a vertical motion component from below upwardly out of the outflow end of said bed; withdrawing said charges during treatment of said liquids in the bed from the outflow end of said bed; and reentraining said charges at the inflow end of said bed. As shown, liquid to be treated flows from inlet 40 through U-shaped bed 10 to outlet 42. From time to time resin in the last portion 18 of the bed is conveyed into regenerating chamber 28 via passages 22 and 26 under the control of three-way valve 112. Regenerant is introduced by conduit 76 and flows upwards, leaving at 70 during the subsequent wash cycle when water is introduced via conduit 72. By a further operation of the valve 112 the regenerated resin is moved to the input end of the bed. A mixed bed may be stratified and the two parts separately regenerated by suitable arrangement of pipes and valves.
Patent GB-408578-A (GB)
Title: Improvements in or relating to the manufacture of hydrochloric acid
IPC: C01B7/01
Filed: 1932-10-07
Abstract: Aqueous hydrochloric acid is obtained by absorbing gaseous hydrochloric acid in boiling water.  An odourless acid can thereby be obtained from the gases from organic chlorinations and like sources the organic impurities being removed by the steam produced.  The gases may be passed in counter-current to a stream of water having a temperature of 100--110 DEG  C. in a packed tower which may be insulated against loss of heat.  The heat generated in the reaction may be supplemented if necessary by the introduction of live steam. The incoming water may be preheated by being brought into indirect contact with the effluent gases and vapours and/or the final hot acid solution.  The aqueous acid which is of about 20 per cent strength may be brought up to commercial strength after cooling by absorption in the ordinary manner of further gaseous hydrogen chloride from an inorganic source.  An example of the treatment of gaseous hydrochloric acid from the chlorination of benzene is given.
Patent GB-150920-A (GB)
Title: Improvements in radiators for motor vehicles and the like
IPC: F28D1/04
Filed: 1919-11-12
Abstract: 150,920. Deane, B. P. F. Nov. 12, 1919. Cup-leather joints; joint ing tubes to headers.-In a radiator for a motor-vehicle of the type in which the water tubes are detachably secured by means of flexible water-tight joints, e a c h joint is made by means o a sleeve 18 of rubber having inturned flanges tapered to a feather edge which grips the end of a tube and of a nipple on the water chamber. The hollow washer is used without external support but may rest on a seating formed by two washers 22 and 24 a spring 23 and a tube gill 21. Tube joint guards hinged at one edge and with means of fastening are provided to protect the joints from the weather.
Patent GB-323508-A (GB)
Title: Improvements in advertising apparatus also applicable for indicating and like purposes
IPC: G09F7/14
Filed: 1928-10-01
Abstract: 323,508. Cecconi, A. Oct. 1, 1928. Cylinders, rotating and oscillating.- Letters or numerals are formed of stationary parts 1, 3, 5, 7, 9 fitted to a support, and parts 2, 4, 6, 8, 10 which are rotatable about axes which coincide with the geometrical axes of the rectilinear parts of the symbol, and are mechanically connected together so as to rotate simultaneously. The rotation is effected by gear or friction wheels a, b, c, or by connecting rods driven by cams on, or by flexible spindles from, the main shaft 11. The parts may be given uniform or varying complete continuous or alternate rotations, or uniform or varying alternate partial rotations. Rotatable elements may also be disposed about the frame surrounding the sign.