baber/WOPTO huggingface dataset:
Patent GB-761461-A (GB)
Title: Improvements in or relating to deflecting arrangements for cathode ray tubes
Inventor: ELBOURN ROLAND WILLIAM
IPC: H03K4/26
Filed: 1953-09-29
Abstract: 761,461. Valve amplifying circuits; saw tooth generating circuits; cathode ray tube circuits. CINEMA-TELEVISION, Ltd. Sept. 29, 1954 [Sept. 29, 1953], No. 26724/53. Classes 40(6) and 40(7) The invention relates to circuits for producing a deflection field proportional to the algebraic difference between two voltages such as a saw-tooth voltage and a voltage for correcting for the geometry of a television picture tube or a saw-tooth voltage and a variable D.C. voltage for varying the region scanned in a storage tube. According to the invention the circuit comprises two similar deflection coils 1, 2 each connected in series with a controlling valve 3, 4 and one of a pair of equal resistors 5, 6, a resistive impedance 7 connected between the junction of the resistors and a terminal of the anode current source and two valve circuits 9, 10, 13, 14 each arranged to compare the potential arising across the series connection of one of said resistors and said impedance with one of the input potentials and to vary the current passed by one of the controlling valves in accordance with the difference potential. As shown the two control valves 3, 4 are fed from the input voltage sources A and B'through cathode coupled comparators 9, 10 and 13, 14, the control valves being coupled by a constant current valve 7 so that an increase in current in one of the deflection coils is accompanied by an equal decrease in current in the other. Negative feedback is applied to the grids of valves 10 and 13 from across the valve 7 and one of resistors 5 and 6 so that the voltage applied to the control valves 3, 4 is the difference between the input and feedback voltages. In an alternative embodiment (Fig. 2, not shown) the deflection coils are of the high impedance type and are connected to the anodes of the control valves, instead of the cathodes, the control valves being driven through a further amplifier from the anode of valves 9 and 14. In addition, constant current valves replace the cathode resistors 12 and 16. The voltages applied to A and B may be derived by combining two further voltages applied to opposite ends of a resistor connected to the terminals. Valve 7 may be connected to a tap of a potentiometer connected between resistors 5 and 6 so that the position of the beam may be adjusted.
Patent GB-462608-A (GB)
Title: Improvements in bathing suits and articles of dress with a floating and buoying capacity
IPC: A41D7/00
Filed: 1935-09-27
Abstract: 462,608. Buoyant fabrics. LEKISCH, E. Sept. 27, 1935, No. 26777. Convention date, Oct. 1, 1934. [Class 77] A buoyant bathing costume or other article of dress is made by working up, e.g. by knitting, plaiting, crocheting or weaving, buoyant ribbon-like vegetable fibres, e.g. bast, which have been freed from any wood parts. According to the Specification as open to inspection under Sect. 91, rush, reed, straw, and other buoyant materials may be used. This subject-matter does not appear in the Specification as accepted.
Patent GB-666874-A (GB)
Title: Gear changing device for motor vehicles
IPC: F16H61/34
Filed: 1948-10-14
Abstract: 666,874. Linkwork for variable speed gearing. TATRA, NARODNI PODNIK, and ELIAS, F. Oct. 14, 1948 [Oct. 14, 1947], No. 26814/48. Classes 80 (ii) and (iii). Depression or raising, or rotational movement of a motor vehicle steering column gear change lever 1 imparts through a tube 19 and respective linkworks comprising arms 2, 12, a lever 13, a link 14 and a pin 6 or arms 2, 3, a lever 4, a link 5 and the pin 6 rotational or axial movement to a gear shift rod 7 disposed in the longitudinal direction of the vehicle to a gear box at the rear thereof. The former movement of the lever 1 causes an arm 8 of the rod 7 to select one of three further shift rods 9, 18 &c. in the gear box, each carrying a fork 10, 15 &c. engaging synchromesh couplings 11, 16 &c., and rotational movement of the lever 1 effects axial movement of the selected coupling to engage the appropriate gear. The arrangement may be used in combination with a rear-engined vehicle.
Patent GB-997005-A (GB)
Title: Improvements in or relating to work coils for high frequency heating apparatus
Inventor: TAIT WALTER GORDON
IPC: C21D1/10
Filed: 1962-07-12
Abstract: 997,005. Heating inductors. RADYNE Ltd. July 12, 1963 [July 12, 1962], No. 26867/62. Heading H5H. A work-coil of a high-frequency induction apparatus for surface - hardening a flange mounted on a shaft incorporates a magnetic shunt to limit the flux from the coil to an axial length of the shaft which is less than the axial length of the work-coil. As shown, Fig. 1, the work-coil comprises two channel-shaped copper annuli 1, 2 and a plate 3 fitting over the channel 2 to form a cooling channel connected to supply tubes 4, 5. The space formed by the annuli 1, 2 constitutes a quench channel fed from a tube 6 and discharging on to a flanged shaft, not shown, L-shaped steel laminations 8 are arranged radially with wedge pieces 9 to act as a magnetic shunt. In Fig. 4, the laminations provide a low reluctance path for the work-coil flux to concentrate the heating on a flange 11. During hardening the work-coil is traversed along the shaft and then held stationary near the flange. It is stated that the laminations 8 can be arranged to form only part of the work-coil and heating around the shaft effected by rotating the shaft or angular oscillation. The laminations can be formed from nickel-iron, silicon iron or ferrites. The laminations can also be replaced by ferrite material or nickeliron dust in block form.
Patent GB-268707-A (GB)
Abstract: 268,707. Perrem Ignition & Electric Co., Ltd., and Perrem, F. C. Jan. 8, 1927. Addition to 266,194. Ignition sets; timing.-In ignition apparatus of the kind which an induction coil 3, a trembler 2, and driving gear 4 for a shaft 7 carrying the rotary members of the low tension interrupter 5 and high tension distributor 19 are arranged in one casing with the shaft 7 placed for accessibility above the coil 3, the normally stationary members 8, 9 of the interrupter and distributor are connected by side links 15. Timing adjustment of the two members may thus be effected simultaneously. The high tension current passes by the lead 17 to the pin 10 centrally mounted in the insulating member 9; thence by the brush 18 to the rotary arm 19 and brush 20 to the segments 12.
Patent GB-602407-A (GB)
Title: Spring hinge
IPC: E05F1/12
Filed: 1945-10-15
Abstract: 602,407. Floor springs. BROWN, G. H., and WATKINS, C. S. Oct. 15, 1945, No. 26932. [Class 65 (i)] A floor spring for swing doors comprises a housing 16 secured to the floor, a cam member 18 rotatably mounted in the housing and secured to the door, and a pair of slides 20 carried in the housing. Each slide is biassed inwardly by springs 19 different from the springs associated with the other slides. The cam member and slides co-act to hold the door open (as shown) or closed.
Patent GB-698065-A (GB)
Title: Improvements in protective arrangements for direct current dynamo electric machines
IPC: H02P9/36
Filed: 1951-11-16
Abstract: 698,065. Exciting dynamo-electric machines. METROPOLITAN-VICKERS ELECTRICAL CO., Ltd. Nov. 16, 1951 [Nov. 30, 1950], No. 26953/51. Class 35. [Also in Group XXXVII] Relates to arrangements for protecting direct. current dynamo-electric machines against the production of excessive armature currents as a result of rapid change of excitation by regulating means for the machines. As shown, a Ward-Leonard motor 2 has its field winding 16 supplied from a constant source 26 through a bucking cross-flux exciter 17. The control field winding 18 of the exciter is regulated by rheostat 22 and co-operates with a winding 19 which just counter-balances the sub-neutralization of the exciter when the necessary excitation current is flowing in the winding 16. In order to limit the speed of response of the machine 17 a transformer winding 28 is connected to winding 27 which opposes the change of control ampere-turns. A magnetic amplifier has coils 30, 31 connected to a centre-tapped transformer secondary winding and to the terminals of a resistor 25 which is in the circuit of the control winding 18. Rectifiers 32, 33 are arranged so that the output of the magnetic amplifier opposes the source 26. The amplifier has saturation winding 34 supplied through rectifier 36 in accordance with the motor armature current, and an opposing saturation winding 35 is energized in proportion to the field current of the motor. When rheostat 22 is adjusted to reduce the field excitation of the motor and an excessive armature current is caused thereby, the winding 34 overcomes the winding 35 and the magnetic amplifier produces a voltage across resistor 25 which reduces the extent of field-weakening. The value of armature current at which this operation takes place increases with an increasing prevailing excitation of the motor since the energization of the winding 35 increases with the motor field excitation. Specification 698,064 is referred to.
Patent GB-1422309-A (GB)
Title: Purification of vinyl chloride
IPC: C07C17/386
Filed: 1974-06-18
Abstract: 1422309 Vinyl chloride purification RHONEPROGIL SA 18 June 1974 [20 June 1973] 26990/74 Heading C2C Crude vinyl chloride from the pyrolysis of 1,2-dichloroethane is purified by distillation of impurities lighter than vinyl chloride, addition to the crude vinyl chloride bottom product of at least one C 4-10  tertiary aliphatic alcohol and/or C 3-10  primary or secondary alpha-unsaturated alcohol and rectification of the mixture, the purified vinyl chloride being taken from the top of the zone of rectification. The alcohol added is preferably a C 4-5  saturated tertiary aliphatic alcohol. 3-Methyl-1-butyn-3-ol, and allyl, propargyl, furfuryl and benzyl alcohols are also suitable. At least an equimolar amount of alcohol, based on the amount of HCl present, is preferably employed. Solid alcohols dissolved in a solvent such as ethanol, dichloroethanes, 1,1,2-trichloroethane, tetrachloro- and pentachloroethanes, CCl 4 , per- and trichloroethylenes may also be used.
Patent GB-748258-A (GB)
Title: Improvements in or relating to resonant vibrating systems
Inventor: WRIGHT WALTER WILLIAM
IPC: H02K33/04
Filed: 1954-09-17
Abstract: 748,258. Electromagnetic vibrators. STANDARD TELEPHONES & CABLES, Ltd. Sept. 17, 1954, No. 27010/54. Class 35. [Also in Group XL (c)] An electromagnetic vibrator, used for testing the mechanical strength of components, is fed through a transformer T1 whose primaiy winding 1 is fed with alternating current from a pair of electronic valves V1, V2 whose control grids are energized from the transformer so as to maintain the electrical oscillation at a frequency determined by the mechanical resonance of the vibrator. The valves are supplied. with anode voltage at terminal 6 and screen grid supply at terminal 7, both from a conventional powerpack. The control grids, biased by resistor R4, are fed from either end of an additional transformer winding 3 which serves to pick up a voltage dependent on the movement of the mechanical vibrator and to control the oscillation of the valves accordingly. In a modified arrangement, the valves are cross-connected to the ends of the primary winding while the grids are connected directly to the ends of this winding through resistors and condensers, a tuning- rheostat being also provided between the grids.
Patent GB-351335-A (GB)
IPC: H01H9/44
Filed: 1930-09-10
Abstract: 351,335. Arc-rupturing in switches. ASSOCIATED ELECTRICAL INDUSTRIES, Ltd., Bush House, Aldwych, London.-(Assignees of Baker, B. P. ; R.F.D. No. 1, Monroeville, Turtle Creek, and Dickinson, R. C. ; 750, Princeton Boulevard, Wilkinsburg, both in Pennsylvania, U.S.A.) Sept. 10, 1930, No. 27074. Convention date, Sept. 11, 1929. [Class 38 (v).] Magnetic blow-outs. - In switches of the deionization type, the arc formed on interrupting the circuit is formed in two seriesrelated sections of which one is established across a stack of spaced deionizing plates disposed in shunt with a field coil for producing a magnetic field to propel the other arc section into the deionizing structure. The stack of plates is preferably disposed in the centre of the deionizing structure. When the contact 3 moves away from the fixed contact 2, the arc formed impinges on an extension 12 of venting plates 5, such as described in Specification 332,851, [Class 38 (v), Electric switches &c.], and is divided thereby into two series-connected sections 13, 14. The section 13 is transferred to a deion structure 6, across which is connected at 9, 11 a blow-out winding 8, which thereupon is energized and drives the other section of the arc, which has assumed the position 15, into the main deion structure 4. The arc is arranged to rotate about a recurrent path in the structure 4, as described in Specifications 288,326 and 289,778, [both in Class 38 (v), Electric switches &c.]. The plates 5 may be of magnetic material and may, in a modification, Fig. 3 (not shown), carry a movable contact for engaging the contact 3 whereby the main arc is not built up until a strong blow-out field has been set up. The coil 8 in the form shown in Fig. 4 is connected by leads 26,27 to U-shaped plates 21,22 between which is an extended part 19 of the structure 4. When the contacts 17, 18 move away from one another, the arc is divided into sections by the members 21, 22, the current in which and magnetic members 24, 25 sets up a field acting on the arc. When the arc section 31 establishes the field due to coil 8, the arc is driven into the structure 4, assisted by interaction between the arc and the parallel currentcarrying conductors 26, 27, and caused to rotate by means of the radial field produced by coils 33. Tinfoil sheets may be placed round the covering of the structure to even out the potential gradient therein.
Patent GB-1498380-A (GB)
Title: Polyurea compounds
IPC: C07D211/58
Filed: 1976-06-29
Abstract: 1498380 Polyureas; stabilizing polymers CHIMOSA CHIMICA ORGANICA SpA 29 June 1976 [18 Nov 1975] 27100/76 Headings C3P and C3R Polyureas having the formula wherein R 1  is hydrogen, C 1-18  alkyl, substituted or unsubstituted C 5-18  cycloalkyl, substituted or unsubstituted C 6-18  aryl, C 7-18  aralkyl or a piperidine radical of the formula in which R 5 , R 6 , R 8  and R 9  individually are C 1-6  alkyl arid R 7  is hydrogen, oxygen, C 1-18  alkyl, C 2-18  alkenyl or alkynyl or C 7-18  aralkyl; R 2  is C 2-18  alkylene, C 5-18  substituted or unsubstituted cycloalkylene, C 6-18  substituted or unsubstituted arylene or C 7-18  arylene; R 3  is a piperidine radical of the above formula; R 4  is C 2-18  alkylene, C 5-18  substituted or unsubstituted cycloalkylene, C 6-18  substituted or unsubstituted arylene or C 7-18  aralkylene; X is 0 or 1; Y is an integer from 2 to 200 and A and B each represents a terminal group formed in the polymerization reaction, may be prepared by reacting a diamine of the formula with carbonyl chloride or a diisocyanate of formula OCN-R 4 -NCO. A part of the diamine may be replaced by another diamine, a diol or an aminoalcohol. In a typical Example (1) a polyurea is prepared by reacting 1,3-bis- (2,2,6,6 - tetramethyl - 4 - piperidylamino)- propane with hexamethylene diisocyanate. The polyureas may be mixed with synthetic polymers in order to improve the stability to light, heat and oxidation of such polymers. It is preferred to use from 0À01 to 5% by weight of the polyurea based on the weight of polymer. In examples, polyethylene and polypropylene are stabilized.
Patent GB-656687-A (GB)
Title: Improvements in or relating to luminaires
IPC: F21V7/04
Filed: 1948-10-19
Abstract: 656,687. Fittings for elongated electric lamps. BRITISH THOMSON-HOUSTON CO., Ltd. Oct. 19, 1948, No. 27153. Convention date, Oct. 21, 1947. [Class 75(iv)] A luminaire for a plurality of tubular fluorescent lamps arranged in a horizontal plane comprises an elongated hollow support member 7 serving as a wiring channel and having a substantially flat top wall 14 and a bottom wall formed with a series of longitudinal trough shaped reflectors 9...12, preferably part elliptical in cross section, within which the lamps are mounted. At each end of the luminaire lamp holders 6 are bolted in pairs to the vertical parts 19, 20 of a bracket 13 attached by bolts and distance pieces 17, 18 to the top wall 14 of the support member. Two metal ballast covers 27 are bolted to the top wall 14 and the parts of the top walls under these covers are cut out to accommodate the ballast casings 31 which are secured to the roof of the covers by bolts 32 engaging brackets 34 on the casings and metal buttons 33 on the covers. Access to the interior of each cover is provided by an opening formed by cutting out a part of the bottom wall of the support member to form doors 36 which at one end are welded to a strap 37 bolted to the lamp holder supporting bracket 13; the other ends of the doors rest on the reflectors 9, 10. The support member may be extruded out of aluminium or the upper and lower walls may be made separately and joined by welding their edges together. Alternatively the support member may be made of a plurality of longitudinal sections joined by longitudinal tongue and groove joints 50. The open ends of the ballast covers and support member are closed by end plates having spring fingers which frictionally engage the inner surfaces of the covers and support. Translucent or perforated metal shields 46, 47 clipped to arms 48 bolted to the support member extend the length of the luminaire to shield the two outer lamps. The luminaire is supported from the ceiling by a pair of conduits bolted to the roofs of the ballast covers. The support member shown in Fig. 8 is made up of three longitudinally extending sections 52, 53, 54 bolted together in side by side arrangement with a tongue 60 on one section lying in a groove 61 in the adjacent section. The lamp holders are supported on straps 64, 65 bolted to the outer sections 52, 54 and the ballast covers are supported on the central sections 53. The lamps are shielded by a louvre hinged to the straps 64, 65 and comprising opaque or perforated strips 70 disposed in transverse slots in the bottom surfaces 58 of the sections and fastened to longitudinal side shields 72. The luminaire of Fig. 8 can be expanded laterally by adding further sections to the support member. Specification 556,531 is referred to.
Patent GB-276194-A (GB)
Title: Improvements in and relating to doffing mechanism for flyer spinning frames and doubling frames
IPC: D01H9/04
Filed: 1926-10-30
Abstract: 276,194. Walker, S. Oct. 30, 1926. Doffing-arrangements; lifting rails; spindle apparatus.-In flyer spinning and doubling frames for hemp, flax, jute, and the like, of the kind in which when the bobbins are full a support is removed to allow them to drop, after which a set of empty bobbins is moved into position for spinning, the support is adapted to serve as a guide for the ends of the spindles so that the bobbins cannot be released until the spindles are disengaged. A supporting plate 13 is provided with apertures 15 to receive the lower ends of the spindles during the spinning, the lifting rail being slightly lowered to free the spindles prior to doffing by means of a pinion 24, and is mounted in a guideway in the lifting rail 10. Upon the completion of the set, the plate 13 is moved longitudinally in the guideway by a lever 16 so that the apertures 14 register with apertures 11 in the rail 10 and the full bobbins fall therethrough and are defected by an incline 34 into a receptacle or on to a travelling band, or are received upon adjustable spindles, mounted on a horizontally movable slide. Empty bobbins 18<1> are mounted on a ramp 28 which is raised to engage the bobbins with the spindles by a rack-carriage 26, the deflectors 34 being moved into the vertical position to allow the passage of the bobbins by means of a cam plate 37 on the carriage. The drag cords are moved to clear the bobbins during doffing by means of a handle 22 which operates the notched bar 21.
Patent GB-283539-A (GB)
Title: Apparatus for testing the effect of weather upon objects
IPC: G01N17/00
Filed: 1927-10-13
Abstract: 283,539. Jameson, C. W. Jan. 13, 1927, [Convention date]. Testing physical qualities of materials.-Comprises apparatus in which a specimen is exposed to weather conditions produced artificially including water spraying apparatus, a heat generating lamp which also produces light rays such as ultra violet rays, and means for producing a humid atmosphere. This apparatus is contained in an upper cylindrical compartment 2 supported on a lower rectangular chamber 1 containing the motor mechanism and part of the regulating apparatus. The objects, for instance steel plates 3, under test are detachably supported upon a positioner formed by upper and lower rings 4, 5 connected by rods 6. The positioner is rotated 'oy an electric motor 19 through worm gear 20, 21, shaft 23, worm gear 24, 25, spur gear 26 - - 29 and a shaft 30 having a spider 5<1> that carries the ring 5. Several tiers of radially directed water ejecting nozzles 31 are provided and are connected with headers 32 - - 35 connected with compartments in a tank 44 to which water is carried by a pipe 45. The compartments are arranged in cascade so that the water issues from all nozzles under the same pressure. The nozzles are arranged on an arc coaxial with the positioner. A centrally arranged arc lamp 46 is provided, and the steel plates 3 are shielded from the arc lamp while being sprayed by an arcuate plate 47. This shield is continued to form one wall of a cooling tank 54. Access to the test plate 3 is provided by doors 50, 51 in the compartment 2. Water from a compartment in the tank 44 is supplied to the tank 54 the outer wall of which is lower than the inner wall so that water falls in a thin curtain to the bottom of the compartment 2. A blast fan 55 driven from a motor 19<1> supplies air through a conduit 56 into a chamber 58 containing canvas curtains dipping into water. The cool air is passed through a conduit 62 into an arcuate chamber 63 and through a slot into the chamber 2. A hinged valve 66 in the conduit 56 is controlled by a thermo-motive device including a piston 65 in a cylinder 65<1> containing fluid which expands under heat to move the piston and through a flexible shaft 81 lever 83, link 84, and bell-crank 85 to move a mercury switch 77 which makes the circuit of a solenoid 72 the armature of which through linkage closes the valve 66. The neighbourhood of the doors 50, 51 is kept cool by air from a chamber 90 supplied by a fan 92. Currernt is supplied from the generator 73 and master switches 99, 94, 74, 95 are provided for the motors, the lamps and the solenoid respectively. Pipes 104, 109 drain from the chambers 2 and 58 into a tank 105 through strainers 106, 110. A hand-wheel 111 is provided for positioning the shaft 30 independently of the motor, provision being made for disconnecting the necessary gear wheels. Thermometers are provided in the chamber 2.