baber/WOPTO huggingface dataset:
Patent GB-1416476-A (GB)
Title: Switch with switching condition storage means
IPC: H02J13/00
Filed: 1973-03-28
Abstract: 1416476 Restoring switch to its previous state after supply failure; non-contact-making switches ZELLWEGER USTER Ltd 28 March 1973 [26 April 1972] 14860/73 Headings H3T and H3X [Also in Division H2] A magnetic core is used to remember whether a switch was conducting or not prior to a supply failure and switching on and off of the switch is effected respectively by means of bidirectional and unidirectional switches connected to a "write" winding on the core. In Fig. 1, a triac 2 for connecting a load ZL to an A.C. supply, is switched on by a capacitor 24 charged via a transistor 23 receiving pulses at its base from terminal 14. To switch the triac off a pulse is applied to the gate of a thyristor 32 so that a capacitor 27 discharges through winding 17 to saturate a core 5. The winding 18 therefore becomes a low impedance shortcircuiting the base of transistor 22 so that the pulses are no longer effective at the base of transistor 23. To switch the triac 2 on a pulse is applied to the gate of a triac 30 which, being bidirectional, allows the capacitor to discharge in a decaying resonant oscillation through winding 17 so that the magnetization of the core is removed. Accordingly the winding 18 becomes of high impedance and the pulses from terminal 14 are effective to cause capacitor 24 to charge and the triac to switch on. If the A.C. supply fails the core remains in its saturated or demagnetized state and accordingly, upon a restoration of the supply, the triac returns to the previous state, on or off. Where switching of the triac 2 is required at the zero crossing of the supply the circuit of transistor 22 and the triac is modified as shown in Fig. 2. When pulses are applied to the base of the transistor 23 a capacitor 35 charges and at the zero crossing of the voltage across the triac 2 a breakdown device 43 becomes conducting and applies a pulse to the gate of a thyristor 37. Accordingly the pulses from transistor 23 pass through a transformer 52 to the gate of the triac to switch it on.
Patent GB-994045-A (GB)
Title: Improvements in knitting machines
Inventor: HOPKINSON JOHN CURTIS
IPC: D04B15/48
Filed: 1960-04-28
Abstract: 994,045. Knitting. HOSIERY & ALLIED TRADES RESEARCH ASSOCIATION. July 28, 1961 [April 28, 1960], No. 14864/60. Headings D1C and D1K. A positive yarn feed to a knitting machine comprises means for producing repeated cyclic changes in the rate of yarn feed so that each course comprises a repeating arrangement of loops of differing sizes. As shown, yarn is fed by nip rollers 11, 12 housed in a casing 10 mounted on the upper ends of a spindle 8 and rod 9, roller 11 being driven through shaft 8 from shaft 4. Roller 11 or roller 12 or both is mounted slightly eccentrically to produce the cyclic changes in the yarn feed. Rollers 11, 12 are spring biased apart and may be brought together by the action of a solenoid. The overall rate of feed is varied by thread guide tube 21 carried by a block 23 slidable in a guide way 24 by a pivoted arm 25 moved vertically by rod 9 controlled by a quality cam 30, adjustments being indicated by pointer 33 on a scale 32. The roller may have a swelling instead of being eccentric or a single roller may be mounted eccentrically or have a swelling. The timing of the variation in stitches may be such as to produce diagonal bands or a diamond effect. Specifications 861,879 and 994,044 are referred to.
Patent GB-230692-A (GB)
Title: An improved hack saw frame
IPC: B23D49/12
Filed: 1924-06-23
Abstract: 230,692. Egan, A. June 23, 1924. Saws.-A hack saw is provided with an adjustable frame, consisting of two parts A, B connected together, extension pieces L to increase the depth of the frame and angularly-adjustable sockets F carrying the usual pegs for the blade. The parts A, B are connected by a pin on each part engaging one of a number of holes in the other, a U-shaped screw clip C embracing the overlapping ends. The extension pieces L, each consisting of a folded plate flattened at the lower end, are fixed to the parts A, B by holts P passing through holes as shown. Sockets D for the straining sc;rew D<2> and the adjusting pin D' are channelled to receive the ends of' the parts A and B or the extensions L as required, and are secured thereto by bolts D<1>. The sockets F carrying the blade are fixed to the parts D<2> and D<3> by split pins G, Fig. 7, passing through coinciding holes therein. The screw D<2> is provided with a key-way engaging a key in the socket D to prevent its rotation. The saw is provided with a handle J connected by clamping bolts to links J' secured to the saw frame by similar bolts.
Patent GB-882117-A (GB)
Title: Samarium compensator
Inventor: BORNSTEIN IRA
IPC: F01B3/00
Filed: 1958-05-12
Abstract: 882,117. Nuclear reactors. NORTH AMERICAN AVIATION Inc. May 12, 1958, No. 15205/58. Drawings to Specification. Class 39(4) The excess reactivity needed in a nuclear reactor to compensate for poisoning by Sm<SP>149</SP> is controlled during the period of Sm<SP>149 </SP>buildup in the core by the initial insertion of an amount of samarium equivalent to up to twice the steady state equilibrium concentration of Sm<SP>149</SP>. The samarium may be the natural metal or a compound such as Sm 2 O 3 , and may be uniformly mixed with fissile material such as U<SP>235</SP> (e.g. as UO 2 ), U<SP>233</SP>, or Pu<SP>239</SP>; and made into fuel elements, with aluminium binding.
Patent GB-579712-A (GB)
Title: Improvements in or relating to the low temperature separation of compressed gaseous mixtures
IPC: F25J3/04
Filed: 1944-08-10
Abstract: 579,712. Low temperature distilling. BRITISH OXYGEN CO., Ltd., and GODFREY, R. C. Aug. 10, 1944, No. 15238. [Class 32] [Also in Group XXVIII] A compressed gaseous mixture is separated into a substantially pure relatively high boiling point constituent and a relatively low boiling point fraction by precooling the mixture to the condensation temperature by heat interchange with a mass of the high boiling point constituent in the liquid phase, sub-cooling the condensed mixture, expanding it and then subjecting it to rectification ; the sub-cooling medium being circulated around the rectification zone to shield it against ingress of heat. The separated low boiling point fraction may be employed as the sub-cooling medium. By sub-cooling the mixture prior to expansion, the amount of high boiling point constituent in the separated low boiling point fraction is reduced. The invention may be applied in the separation of compressed air into substantially pure oxygen and a nitrogen fraction. The compressed gaseous mixture is fed through a conduit 15 to a heat exchanger 16 in the reboiler 11 of a packed rectification column where it is precooled by the separated liquid high boiling point constituent. The precooled mixture is then sub-cooled in the tubular helix 17 mounted in the casing 22 through which the separated low boiling point fraction passes. The sub-cooled mixture flows through the expansion valve 18 and is distributed over the contact mass in the column by the distributor 19 which has several outlets 24 extending down into the contact mass. As the temperature of the low boiling point fraction flowing through the casing 22 is lower than that of the peripheral portions of the contact mass in the column, the latter is surrounded with a static air shroud 23 which acts as a thermal insulator.
Patent GB-823961-A (GB)
Title: Convector
Inventor: JR MENKE DREWES
IPC: F24D19/04
Filed: 1956-05-16
Abstract: 823,961. Unit ventilating apparatus. CRANE CO. May 16, 1956, No. 15244/56. Class 137 Apparatus for heating or cooling air, e.g. in a room, comprises a casing 1 which houses heat exchange pipes 11, 12 which are supplied by a heater with either hot or cold fluids and a tube 13 which is located below the pipes 11, 12 and has spaced apart slots 14 for emission of air upwardly past the pipes 11, 12. Lower and upper room air inlets and outlets 7, 8 are respectively formed between the lower and upper edges of a front wall 6 of the casing and the corresponding edges of an upturned edge 5 of a condensate drain pan 4 and a top wall 2 of the casing. Fins 9 extend transversely to, and tightly engage, the pipes 11, 12 and the tube 13. It may be desirable to reduce, or entirely eliminate, the passage 7 in which latter case a series of spaced openings are formed in the lower portion of the front wall 6 of the casing. The pipes 11, 12 and the tube 13 are carried on supports 18.
Patent GB-612234-A (GB)
Title: Improvements in joints suitable for use in steering mechanism for automobile vehicles
IPC: F16C11/00
Filed: 1946-05-20
Abstract: 612,234. Pivotal joints. BISHOP, R., and JOHNSTON, R. H. May 20, 1946, No. 15248. [Class 65 (ii)] A Hooke's joint adapted to allow greater angular movement about one than about the other of its pivotal axes, comprises a member formed with ears 4, a member formed with ears 9 which are made narrower than the gap between the ears 4 and are spaced apart by a distance less than the width of the ears 4, a pivot pin 5 carried by the ears 4, a pivot pin 7 carried by the ears 9 and passed through a bore formed diametrically through the centre of the pin 5, washers 8 of external diameter approximately equal to the gap between the ears 4 and mounted on the pin 7 one on each side of the pin 5, and spring washers 11 adapted to limit axial movement of the pin 7. In a modification, the washers 8 are positioned outside the ears 9, the latter embracing opposed flats formed on the pin 5.
Patent GB-254696-A (GB)
Title: Improved means for drying air in mines
IPC: E21F3/00
Filed: 1926-06-17
Abstract: 254,696. Weiler, A. July 1, 1925, [Convent'ion date]. Drying air.-For maintaining the air dry at the working places in mines, calcium or magnesium chloride or other desiccants are stored in lavers upon removable perforated shelves 3 in a mine truck having hinged ends which may be opened for the passage of the air through the truck at the beginning of the working-shift and closed at the end of the shift. The truck is provided with a drain tap 5.
Patent GB-1464084-A (GB)
Title: Double-acting multi-cylinder stirling-cycle hot gas engine
IPC: F02G1/044
Filed: 1975-04-15
Abstract: 1464084 Hot gas engines UNITED STIRLING (SWEDEN) AB & CO KB 15 April 1975 15392/75 Heading P1S In a double-acting multi-cylinder Stirling cycle hot gas engine, the regenerator - cooler units are clustered around a central axis of the heater head and the expansion chambers 10 of the cylinders are located at greater radial distances than the regenerators from the axis. The regenerators may be in the form of individual units or may be arranged in a common housing 24, as shown.
Patent GB-827447-A (GB)
Title: Improvements in methods and devices for heating a cloth web
IPC: D06B1/00
Filed: 1958-05-14
Abstract: <FORM:0827447/IV(c)/1> <FORM:0827447/IV(c)/2> A cloth web, immediately before it is wound on to a roll, passes in contact with a steam tube extending along the roll and resiliently bearing against the same, and steam is ejected through holes in the tube into the space where the web forms a tangent with the roll.  As shown, cloth web 19 passes in a zig-zag path over rollers 25 and under rollers 23 immersed in a vat 13 of treating liquor, and then between rubber squeeze rollers 15, 17 which remove excess liquor.  It then passes under guide roller 27 before being contacted by steam tube 33 carried by two parallel swinging arms 39 pivoted at 41.  Steam is emitted through holes 37 along tube 33, which is held in engagement with roll 31 and web 19 throughout the treatment period.
Patent GB-1211442-A (GB)
Title: Charging apparatus
IPC: G03G15/02
Filed: 1968-04-01
Abstract: 1,211,442. Electrostatic charging apparatus. RANK XEROX Ltd. April 1, 1968 [April 6, 1967], No.15532/68. Heading G2H. Electrostatic charging apparatus for applying a negative charge to a xerographic plate 11 having a photo-conductive surface 12 on a conductive substrate 13 comprises a direct current source 14, an elongated corona discharge electrode 17 connected to the negative terminal of the source 14 and a field generator 16 which produces a field perpendicular to a line between the corona electrode and the insulating surface. The potential applied to electrode 17 causes positive ions surrounding the electrode to move towards the electrode to ionize neutral gas molecules to produce additional ions which are accelerated to produce more ions. The negative ions and electrons produced are repelled by the negative potential on the electrodes and migrate towards plate 11 to produce a uniform negative charge on the plate 11. The alternating current applied to the electrode produces a circular magnetic field around the electrode the direction of which depends on the direction of current Figs.2A and 2B. The negative ions and electrons are subject to fibres C y  and C x , such that they tend to disperse in a flame along the length of the electrode. In another embodiment an alternating current source 22 Fig.3 is connected to field generators 26 which produce an alternating electric field between corona wire 27 and plate 23 parallel to the wire 27. In a further embodiment, Fig.4 (not shown) two alternating current sources (28, 29) are provided the source (29) being connected to field generators (32).
Patent GB-1139272-A (GB)
Title: Sonic vehicle detector
IPC: G01S15/18
Filed: 1967-04-05
Abstract: 1,139,272. Road traffic detectors. LABORATORY FOR ELECTRONICS Inc. 5 April, 1967 [20 May, 1966], No. 15563/67. Heading G4Q. [Also in Divisions H3 and H4] In an ultrasonic vehicle-detector a transmitted ultrasonic pulse is generated by passing the output of a continuously running oscillator through a gated amplifier to a transducer, and echoes from a vehicle within a selected range are detected in a receiver amplifier gated off during transmission and then gated on by a " range period " pulse. In the embodiment of Figs. 3 and 4 the pulse repetition rate is controlled by free-running multivibrator 20. Continuously running oscillator 24 supplies 19kc. signals through amplifier stages 23, 25, 26, 27, 28 to a transmitting/receiving transducer located over or at the side of a roadway, the output of stage 23 being normally clamped by shunt transistor 58 but being unclamped when a pulse from multivibrator 20 switches transistor 58 off. Capacitors 59, 69 give an appreciable rise and fall time to the envelope of the resulting 19kc. pulse train and this, together with the selection of equal ohmic values for resistors 63, 65, eliminates " key clicks " by preventing large D.C. voltage changes on coupling capacitor 84. Returned echo signals pass through limiter 31 and a tuned amplifier comprising stages 32, 33, 34 to a range gate 35, 36, 37 which is blocked during transmission and is opened under the control of multivibrator 20 a predetermined time after transmission. The gated echo signals switch stages 39, 40 to actuate lamp and relay drive circuits 42, 43, 44 for indicating the presence of a vehicle and actuating a vehicle counter or traffic control system. Details of the operation of the Fig. 4 circuitry are given. In various modifications more than one transmitter/ receiver unit may be used with a single 19kc. pulse modulator (stages 20 to 26) or separate transmitting and receiving transducers may be used.
Patent GB-1056643-A (GB)
Title: A metering arrangement
IPC: G06M1/274
Filed: 1965-04-12
Abstract: 1,056,643. Electric selective signalling. SIEMENS-SCHUCKERTWERKE A.G. April 12, 1965 [April 11, 1964], No. 15574/65. Addition to 1,050,175. Heading G4H. In the metering arrangement described in the parent Specification, in which the numeral disc carries magnetic coded marks placed above and below each numeral, the marks are sensed by first and second Hall generator sensing heads, the signals being received by first and second means for producing corresponding pulses which are then applied to first and second and gates also receiving clock pulses, the gates providing an output for transmission to a distant point when a sensed signal coincides with a clock pulse. The start button 18, Fig. 3 (not shown), sets trigger 30 which causes relay 27 to operate and change contact 26 from its central position to one side. The motor then drives the sensing heads across the numeral discs of the metering arrangement. After a predetermined time trigger 30 resets and relay 27 is energized in the opposite direction moving contact 26 to the other side and causing the motor to return the sensing heads to the initial position. When trigger 30 is set i.e. during the sensing period, the oscillator 33 is switched on applying control currents to the sensing heads 4 and 5 through amplifiers 34, 35. The sensing heads are connected to triggers 39, 40 which are connected to And gates 41, 42. The other inputs are from timing triggers 47, 48. The timing circuit 15 is started by the start mark, the first signal from trigger 39 being applied to set trigger 49 which remains set for 120 milliseconds and causes triggers 47 and 48 to operate alternately each remaining set for 20 milliseconds. The two triggers accordingly each produce three gating pulses of 20 milliseconds. The outputs of the two gates are connected together to provide a succession of pulses for transmission on one head.
Patent GB-497558-A (GB)
Title: Improvements in cabinets for dispensing sheet material
IPC: A47K10/24
Filed: 1938-05-25
Abstract: 497,558. Paper &c. towel dispensing- cabinets. FREEDER, F. A. May 25, 1938, No. 15597. [Class 18] Sheet material such as paper or an endless linen towel passes from a roll C through the bite of a pressure roller 8 and feed roller 6 and out through the opening 16. A spring 14 attached to the roller 6 at 15 tends to rotate the roller in the direction of the arrows A, B and thereby feed out the sheet, but is normally prevented from doing so by the engagement of a catch 23 with a shoulder 20 on a detent plate 19 fast with the roller 6. The catch 23 is fixed to a frame 22 pivoted at 21 and urged towards the detent plate by a spring 24. To the frame 22 is pivoted a pawl 25 which engages with the teeth of a ratchet wheel 17 also fast with the roller 6. When the roller 6 is manually rocked anticlockwise, Fig. 1, by means of an exterior knob, the pawl 25 (and hence the catch 23) is pushed to the left and the spring 14 pulls the roller 6 around to dead centre position, partly feeding out the sheet. The frame 22 is held in the " left " position, Fig. 1, by a strut 26 pivoted thereon ; when the strut moves to the left the forked end thereof drops from the position shown and a toothed part 31 thereon engages with a pinion 32 fixed on the shaft of the roller 6. The user now pulls the sheet completely out, thus (1) rotating the roller 6 and pinion 32 so that the strut moves upwards, the pinion drops into the recess E in the strut, the frame 22 moves to the right and the roller 6 is re-locked, and (2) resetting the spring 14. Means for indicating exhaustion of sheet material comprises a feeler 35 resting on the roll C, pivoted at 36 on the cabinet and moving, via a link 37, an indicator 38 visible through a slot in the casing ; alternatively, or in addition, a window may be provided in the casing. To position the end of the sheet, the pressure roll 8, which is carried between spring (13) -pressed arms 9, is pushed away from roller 6 by means of a link 12 and trigger-plate 10, 11. A saw or knife edge may be positioned at or about the slot 16. The surface of the roller 6 is grooved circumferentially and friction-surfaced.
Patent GB-1489164-A (GB)
Title: Manufacture of scale model handrails
IPC: A63H19/00
Filed: 1976-04-15
Abstract: 1489164 Toys ROVEX Ltd 18 Aug 1976 [15 April 1976] 15651/76 Heading A6S [Also in Division B5] A scale model handrail for a model railway vehicle, ship or aircraft comprises a wire of suitable diameter to form the rail 1 onto which are moulded (see Division B5) at intervals plastics stanchions 2 having pegs 2C for insertion into holes e.g. in a locomotive boiler casing.
Patent GB-746051-A (GB)
Title: S:s-diethyldithioterephthalate and therapeutic compositions containing the same
Inventor: DRIVER GEORGE WILLIAM
Filed: 1953-06-08
Abstract: The invention comprises S:S1-diethyldithio terephthalate of the formula <FORM:0746051/IV(a)/1> and the preparation thereof by esterifying terephthalic acid with ethyl mercaptan or by reacting terephthalic acid halide with ethyl mercaptan.  The latter reaction is preferably carried out in an inert solvent with or without an acid-binding agent, e.g. sodium hydroxide.  In the examples, the compound is prepared from terephthalic acid halide.ALSO:A therapeutic composition containing as the active ingredient S,S1-diethyldithioterephthalate of the formula <FORM:0746051/VI/1> The composition is effective in the treatment of tuberculosis.
Patent GB-887319-A (GB)
Title: Pressure welding metal members by interposition of friable substances therebetween
IPC: B23K20/02
Filed: 1958-05-15
Abstract: 887,319. Welding by pressure. REYNOLDS METALS CO. May 15, 1958 [May 15, 1957], No. 15718/58. Class 83 (4). In pressure - welding cold weldable metal members at least one of which is of aluminium, a layer or layers of total thickness of at least 0.00005 inch, of brittle or friable substance having a greater strength in compression than the members is interposed between the members and pressure is applied across the thickness of the members to shatter the layer or layers and effect welding of the members. Two aluminium strips 11, 12 anodized in aqueous electrolyte solution containing 15-18% sulphuric acid are overlapped, the films 16 having a composite thickness of at least 0.00005 inch, and spot-pressure tool 13 deforms the parts at point 15. Only one strip need be anodized, the other having a natural oxide film. Five aluminium members separated by layers of friable material may be similarly cold-pressure welded. Aluminium foil strip coated on each surface with an anodized or acid bath produced oxide layer, porcelain enamel or glass is disposed between two workpieces, e.g. naturally oxidized aluminium foil and a cold-pressure seam weld made, e.g. to form a foil bag. To assist in holding the strip spots of adhesive may be applied to the coatings. In a further embodiment two overlapped square pieces of aluminium sheet anodized to provide oxide films 0.00025 inch thick are cold-pressure spot welded. In another embodiment a sheet of aluminium is superimposed on a sheet of wirebrushed oxide free copper with a sheet of glass between them and spot-pressure is applied to shatter the glass and effect welding. Two aluminium sheets separated by a glass sheet may be welded. Electrically-conducting workpieces may be coated with an insulating friable substance, which may in turn be coated with silicone resin, and then cold-pressure welded without removing the insulation before welding. It is stated that some heat may be employed in welding, the friable layer may exceed 0.01 inch in thickness, the reduction in welding may be between 55 and 90% and that rollers or ribbed or elongated welding tools may be used. The term aluminium includes aluminium alloy.
Patent GB-116832-A (GB)
Title: An Improved Vessel and Process for the Infusion of Tea, Coffee, and other Materials.
Inventor: MACKAY ROBERT
IPC: A47G19/14
Filed: 1917-10-30
Abstract: 116,832. Mackay, R. Oct. 30, 1917. Pots.-A vessel a, for obtaining an infusion of tea, coffee, &c., is preferably of conical shape with a base b filled with non-conducting material b<1>, and is fitted with a bell or infusion chamber c, which is closed at the top and carries at the lower end a detachable perforated container c<2> for the tea &c. Steam may first be admitted through the spout a<1> and then hot water, the air in the vessel a being expelled through a vent-hole a<4>, or a tube c<3> or a<5> may be provided in the bell or vessel for the admission of boiling water. The aroma from the tea &c. is retained within the bell.