baber/WOPTO huggingface dataset:
Patent GB-375477-A (GB)
Title: Improvements in and relating to electric lamps
IPC: H01J61/54
Filed: 1931-04-22
Abstract: 375,477. Electric incandescent lamps. BRITISH THOMSON-HOUSTON CO., Ltd., Crown House, Aldwych, London.- (Assignees of Strickland, R. F. ; 2227, Noble Road, Cleveland Heights, Ohio, U.S.A.). April 22, 1931, No. 11934. Convention date, April 22, 1930. [Class 39 (ii).] Lamps of the kind described in Specification 317,832, [Class 39 (ii), Electric lamps, Incandescent], having an incandescent filament 29 across the arc gap between refractory electrodes 30, 31 and a filling of mercury vapour and inert gas such as argon, are connected in series with one or more incandescent filaments acting as ballast to consume the voltage drop after the arc starts and so avoid the use of a transformer with a drooping characteristic. The ballast may comprise two halves of a coiled tungsten filament 19 connected in parallel and mounted in an outer bulb 10 filled with inert gas, such as nitrogen or argon or a mixture thereof at a pressure slightly below atmospheric, as described in Specification 10918/13, [Class 39 (ii), Electric lamps, Incandescent]. The leads to the are in the inner bulb may comprise parts 25 of nickel or copper, parts 26 of tungsten and parts 27 of molybdenum or tungsten or of nickel with ends 28 of molybdenum or tungsten. The bulbs may be of quartz or boro-silicate glass transparent to ultra-violet rays. The pressure in the inner bulb may be 100 mm. when cold, the pressure rising in operation due to the arc and to heating by the filament 19. The ends of the filament 29 may surround the leads 28 to form the arc electrodes. The stem 22 is of the kind described in Specification 147,293, [Class 39 (ii), Electric lamps, Incandescent]. In a modification, the bulb 10 and filament 19 are replaced by two separate incandescent lamps in parallel.
Patent GB-591736-A (GB)
Title: Improvements in or relating to turbo-compressor propulsive apparatus
IPC: F02C7/18
Filed: 1945-05-11
Abstract: 591,736. Gas turbines; jet propulsion. DE HAVILLAND AIRCRAFT CO., Ltd., HALFORD, F. B., and BRISTOW, G. May 11, 1945, No. 11942. [Class 110 (iii)] In a gas turbine plant, for the jet-propulsion of aircraft, in which a turbine D drives a compressor C, the turbine casing, the converging conduit E and the propulsion nozzle F are enclosed by a conical casing G and air is supplied to the space between. Air enters this space through holes A<4> in a partition A<2> and holes L<3> and flows into the propulsive jet through an annular exit F'. The casing may be formed with an internal gutter on its underside draining to an escape pipe through the nacelle. In the form in which the conduit E has a long cylindrical extension leading to the nozzle F, the casing G is continued by a similar cylindrical extension. These extensions are articulated to the conduit and casing by universal joints formed by pressing the engaging parts into spherical shape. In a modification, the casing G finishes with a closed end G<2>, Fig. 5, before the end of the converging conduit E. An air jacket around the further part of the conduit E and the nozzle F is provided by the nacelle L and the latter is extended at L<2> beyond the end of the nozzle.
Patent GB-757904-A (GB)
Title: N:n -dibenzylethylenediamine salt of penicillin
Inventor: JONES WILLIAM GLYNNE MOSS
IPC: C07D499/00
Filed: 1953-04-30
Abstract: The N,N1-dibenzylethylene diamine salt of penicillin is prepared by bringing penicillin in solution in a solvent comprising an organic solvent (defined) into reaction with an iminazolidine of the formula <FORM:0757904/IV(a)/1> wherein R stands for hydrogen or a hydrocarbon radical which optionally may bear substituents, the resulting iminazolidine salt of penicillin being then allowed to decompose by means of the water present in the solvent to give rise to the N,N1-dibenzylethylene diamine salt of penicillin.  Specified for R are alkyl such as methyl, ethyl, n-propyl, isopropyl, n-butyl and a -hydroxy-n-butyl; and aryl such as phenyl, p-methoxyphenyl, p-chlorophenyl and p-methylphenyl.  Reaction solvents employed in the examples are ethanol, acetone, ether and mixtures of chloroform and acetone.  The iminazolidine may be prepared in situ by the addition of an aldehyde of formula R.CHO to an organic solvent solution of N,N1-dibenzylethylenediamine.  The iminazolidine may be added directly to an organic solvent extract of a fermentation broth since the acidic impurities present in such an extract are not precipitated by the iminazolidine.  Reference has been directed by the Comptroller to Specification 716,556.
Patent GB-1033052-A (GB)
Title: Improvements in or relating to methods and apparatus for producing toughened glass
IPC: C03B27/052
Filed: 1962-03-28
Abstract: <PICT:1033052/C1/1> In the toughening of sheet glass wherein the heated sheet is subjected to the action of a chilling medium directed at the surfaces whereby a temperature difference between the surfaces and the interior is obtained, the cooling of the interior is retarded by directing on to the glass radiations of a wavelength to which the glass is partially transparent and in the absence of radiations to which the glass is opaque.  The glass sheet 3 is positioned between blowing boxes 1, 2 with nozzles 4 to direct cooling air and either lamps 6 and/or a coating 5 of zirconium silicate or calcium silicate is provided to give radiations or reflect radiations of wavelength from 0.4 to 5 microns. Alternatively, the coating 5 may be replaced by a thin sheet of glass having an outer coating of gold.
Patent GB-1389844-A (GB)
Title: Electric transformers
IPC: H01F29/14
Filed: 1972-03-15
Abstract: 1389844 Transformers WESTINGHOUSE ELECTRIC CORP 15 March 1972 (23 April 1971] 12055/72 Heading H1T A variable transformer of parametric type similar to that disclosed in Specification 1,308,966 comprises an input winding 46 which when energized produces alternating flux in two magnetic paths, one linking an output winding 52 connected to load terminals and having a capacitor 54 in parallel to provide a resonant tank circuit tuned to the input frequency, the other path including a magnetic member 26 which is saturated during each half cycle by the fluxes produced therein by windings 46 and 52, means, e.g. 62 being provided by which the output voltage can be varied. When the tank circuit starts to oscillate and member 26 saturates, coupling between input winding 46 and output winding 52 increases (twice per cycle) (when 26 saturates) transferring energy to the tank circuit and load. The period of coupling due to the saturation may be 10-15 degrees. Various forms of shell and core type magnetic circuits may be used formed either of wound grain oriented strip or flat laminations and similar to those disclosed in Specification 1,385,224. Non-magnetic gaps may be provided by spacers 60 which may be between the core parts as for example by spacer 128 (Fig. 8) which is arranged between a shunt member 126 (which forms the saturable member) and one of two sets of E -laminations 122<1>, 124<1>; voltage variability being provided by moving a laminated member 146 to vary the linkage (by varying the leakage flux) between the output winding and the core. This movable member may be used to set the output voltage or a manufacturing adjustment and then fixed in place. Alternatively it may be movable in use to provide a user adjustment. The size of the non- magnetic gap(s) determines the threshold voltage for self-starting operation of the transformer. A separate starting circuit may be provided to charge the capacitor 54 to initiate oscillation.
Patent GB-1433132-A (GB)
Title: Method of manufacturing screw rotors for compressors
IPC: B21C23/01
Filed: 1972-03-16
Abstract: 1433132 Extruding; making screw compressor rotors HOWDEN COMPRESSORS Ltd 7 May 1973 [16 March 1972] 12223/72 Headings B3P and B3A A screw compressor rotor is made by manufacturing, e.g. casting, a blank having approximately the shape of the rotor, followed by exextruding the blank to form the rotor. The blank may be heated before extrusion and either the extrusion die or the blank may be rotated during the extrusion.
Patent GB-1094526-A (GB)
Title: Magnetic memory device
IPC: G11C7/02
Filed: 1965-03-23
Abstract: 1,094,526. Magnetic data-storage devices. TOKO KABUSHIKI KAISHA. March 23, 1965 [March 26, 1964; April 13, 1964]. No. 12267/65. Heading H3B. In a magnetic memory matrix, non-destructive read-out of the binary information stored in magnetized regions p at the intersections of magnetically coated digit lines 1 and word drive lines 4 is accomplished by using read-out drive pulses of insufficient ampere turns to permanently switch the direction of magnetization in the regions. As shown, each digit line 1 has a conductor core 2 coated with a magnetic film 3 having a circumferential easy axis y. Writing in is done by simultaneous application of a write pulse or high frequency current I w  and a digit pulse I D  of polarity dependent on whether a " 1 " or a " 0 " is to be written in, Fig. 2 (not shown). A read-out pulse on line 5 generates a voltage on the digit line of polarity dependent on the information stored. To reduce the number of terminals needed, part of a word drive line is used as a readout drive line, Fig. 6 (not shown), and preferably diodes are used to short circuit some of the drive line turns with respect to a read-out pulse I R  but not with respect to a write pulse I w , Fig. 12 or Figs. 14 and 15 (not shown). The matrix may be woven, Figs 3 to 6 (not shown) or the drive lines (4) and (5) may be printed on insulators (7), Figs. 7 to 11 (not shown).
Patent GB-551171-A (GB)
Title: Improvements in or relating to typographical composing and slug casting machines
IPC: B41B7/16
Filed: 1941-09-22
Abstract: 551,171. Dashpots. MERGENTHALER LINOTYPE CO. Sept. 22, 1941, No. 12271. Convention date, Feb. 4. [Class 108 (iii)] [Also in Group XVI] A dashpot for cushioning movement of the elevator of a typographical compsosing and slug-casting machine [see Group (XVI)] comprises of an oil cylinder K<SP>19</SP>, the piston K<SP>20</SP> of which has a passage K<SP>21</SP>, through which oil flows from one end of the cylinder to the other. The piston contains a vertically sliding valve K<SP>22</SP>, which is supported by a spring and has a passage through it, which registers with the passage K<SP>21</SP> in the piston when the valve is in the upper position. The piston is reciprocated by a lever K<SP>27</SP> and a slotted link K<SP>31</SP> from the segment K<SP>9</SP>. As the elevator nears an extreme position, the piston is moved by the slotted link K<SP>31</SP>, so that oil flows through it. A lip on the valve K<SP>22</SP> then encounters one of a pair of pivoted cam-plates K<SP>33</SP>, K<SP>34</SP>, which are held against stops by a connecting spring. The valve is thereby cammed down, so as to reduce the size of the oil passage through the piston, and to retard increasingly the flow of oil. Towards the end of the piston stroke, the lip on the valve escapes from the cam-plate, and the oil passage is enlarged in readiness for the return stroke of the elevator. During the return stroke, the pivoted cam-plate is pushed aside, and the other cam-plate acts to depress the valve K<SP>22</SP>.
Patent GB-1224191-A (GB)
Title: Light reflector
IPC: G03G15/04
Filed: 1968-03-13
Abstract: 1,224,191. Electrostatic copying machines; optical reflectors. G.A. F. CORP. March 13, 1968 [March 15, 1967], No.12284/68. Heading G2H and G2J. A light reflector, particularly for use in a copying machine, comprises an elongated member 112 having a substantially curvilinear elliptical cross-section, the inner surface comprising a plurality of longitudinal planar reflecting surfaces. The reflecting surfaces form surfaces 117, 118 of generally elliptical form generated about a common axis 'A', but asymmetrically displaced about this axis. The reflecting surface provides for a uniform light intensity at a scanning aperture (42), Fig. 1 (not shown) of a copying machine.
Patent GB-552062-A (GB)
Title: Improvements in or relating to electrical impulse transmission
IPC: H04Q1/36
Filed: 1941-09-23
Abstract: 552,062. Automatic exchange systems. BIRSS, R. R. Sept. 23, 1941, No. 12306. [Class 40 (iv)] In an impulse receiving arrangement for restoring distorted impulses to rectangular form, a thermionic valve V which controls the responding relay A is rendered conductive when the impulse circuit 10 is closed by the voltage across a resistance R1, and in addition a voltage kick is produced at the beginning and end of each impulse through a transformer TR1 to assist and quicken the response of the relay A. Alternatively, the voltage across the resistance R1 may be arranged to release a normally operative relay. A second correcting stage may be used if one stage is insufficient, and the circuit is also applicable as a second stage in the arrangement described in Specification 552,063 for correcting rectified A.C. impulses.
Patent GB-1382104-A (GB)
Title: Mobile gas supply systems
IPC: F17C9/02
Filed: 1972-03-16
Abstract: 1382104 Inflating tyres RE BIEVER 16 March 1972 [17 March 1971] 12312/72 Heading A4T [Also in Division F4] A mobile gas supply system, e.g. for inflating aircraft or other vehicle tyres, comprises a wheeled cart, Figs. 1, 2 (not shown), carrying a cryogenic liquid tank 58, and vaporizing coils 66 producing a stream of cold gas which is warmed in a heat exchange coil 50 in which the gas is warmed by convection due to the passage of ambient air over the coil, and by conduction through a plate 49 to which the coil is attached by e.g. brazing, the warmed gas then passing to a distribution manifold 54' whence it may pass to one of a plurality of flexible noses 34 each having a dispensing valve 38. The coil 50 may be abutted by a second conducting plate (53) Fig. 4 (not shown), having a plurality of ribs coinciding with the vertical portions of the coil 50.
Patent GB-591322-A (GB)
Title: Improvements in navigating apparatus
IPC: G01S7/24
Filed: 1945-05-16
Abstract: 591,322. Radiolocation. O'KANE, B. J., and DICKIE, E. J. May 16, 1945, No. 12370. [Class 40 (v)] In a pulse radar system with a P.P.I. display for use on a moving craft or vehicle, means are provided for controlling the rotation of the time base so as to maintain the orientation of the display with reference to some bearing other than the instantaneous course bearing, e.g. true or magnetic north or the track of the craft. As shown in the Figure, a saw-tooth time-base voltage from the generator 8 is applied to the rotor winding 9 of a rotary transformer and the outputs from the two perpendicular stator windings are applied to the. perpendicular deflection systems of the cathode-ray tube 7, the rotor 9 being mounted on the same shaft 3 as the aerial 1 so that rotation of the aerial by the motor 6 causes a synchronous rotation of the radial time base 15. The time base is initially set up so that the top of the P.P.I. display represents true north and in order to compensate for changes in the orientation of the craft the stator windings are mounted on a rotatable frame 10 geared to a repeater motor 20, which is connected to a distant reading compass 21. Alternatively, if it is desired to orientate the display in relation to the track of the craft the navigational instrument may comprise a drift angle computer. In a modification, Fig. 2 (not shown), the radial time base is produced by a rotary potentiometer having two 90 degree displaced wipers the voltage outputs from which are proportional to the sine and cosine of the angular position of the spindle and are applied to control the amplitudes of two sets of synchronous square waves which are applied through R.C. saw-tooth generating circuits . to the X and Y plates of the cathode-ray tube. The orientation compensation is obtained by gearing the aerial shaft and the navigational repeater motor to the two sun wheels of a differential gear, the potentiometer spindle being geared to the planet wheel. Alternatively, the rotary potentiometer could be replaced by the rotary transformer of Fig. 1 with fixed stators or the compensation system of Fig. I could be applied to the rotary potentiometer.
Patent GB-346580-A (GB)
Title: Improvements in or relating to pyrophoric lighters
IPC: F23Q2/08
Filed: 1930-04-22
Abstract: 346,580. Frictional pocket-igniters. HITCHCOCK, W. H., 24, Westbourne Square, and BOBILLIER, G., 85, Hatton Garden, both in London. April 22, 1930, No. 12433. [Class 75 (iii).] In an igniter in which the friction-wheel 8 is rotated by a spring when an arm 9, rotatable witl the wheel, is released from a spring catch 14 the spring 11 is connected to one end of a lever 7, the other end of which is provided with a pin 13 adapted to rotate the arm 9, or to an extension of the arm 9. The spring 11 extends through a tube 12 in the casing 1 and is always held in tension. The arm 9 carries an extinguishing cap 15 for the wick 2. A wind shield 16 may be provided.
Patent GB-1012947-A (GB)
Title: Improvements relating to chain conveyors
Inventor: SMITH WALTER ARTHUR
IPC: B65G23/00
Filed: 1963-03-29
Abstract: 1,012,947. Endless conveyers. CHARROLD Ltd. June 24, 1964 [March 29, 1963], No. 12603/63. Heading B8A. An endless conveyer chain 2 is driven at a number of different points by sprockets 3, 4, 5, 6, all driven from a common drive member through the intermediary of means adapted automatically to ensure that the sprockets each transmit an equal force to the chain. Fig. 1 shows the common drive provided by a motor 9 through a clutch 11 and gearing including differential devices 16, 21, 22. Fig. 5 shows the common drive provided by a pump 43 driving hydraulic motor units 42 interconnected to allow fluid from one to pass to the others.
Patent GB-551540-A (GB)
Title: Improved apparatus for effecting the proportional addition of one liquid to another
IPC: C02F1/68
Filed: 1941-09-30
Abstract: 551,540. Mixing liquids. SMALLEY, W. Sept. 30, 1941, No. 12644. [Class 86] Relates to apparatus for effecting the proportional addition of one liquid to another, of the kind comprising a container e for the liquid to be added arranged in proximity to the delivery pipe c from the pump or other source of supply to the storage tank, and a device such as. a Venturi tube in the delivery pipe adapted to exert a suction to withdraw liquid from the container e to mix with the liquid passing to the storage tank, and consists in providing for a constant level in the chamber b from which the liquid is withdrawn by closing the container e airtight and providing a liquid sealed escape orifice b' near its base discharging into the chamber b<SP>2</SP> on the bird-fountain principle. The flow may be adjusted by a throttling valve g.
Patent GB-724856-A (GB)
Title: Improved thermal insulation for refrigerators
IPC: F25D23/06
Filed: 1953-05-07
Abstract: 724,856. Heat insulation. GENERAL MOTORS CORPORATION. May 7, 1953 [May 23, 1952], No. 12696/53. Class 64 (2). For insulation, e.g. of refrigeration apparatus or installations, a sealed bag 14 is made of inner and outer layers 18, 20 of impervious materials such as a copolymer of vinyl chloride and vinylidene, and a polyester of ethylene glycol and terephthalic acid respectively (polystyrene may also be used for one of the layers) and the bag contains material such as glass fibres 26 and a gas, such as difluorodichloromethane, having thermal conductivity less than air. The layers are joined by a rubberbase or vinyl chloride type adhesive 32 which also seals any holes 30 which may be in the layers. When the bags are located in the hollow wall of a refrigerator, Fig. 2, insulation such as glass fibres 16 is included to take up any expansion of the bags. The densities of the glass fibres 16 and glass fibres 26 are 1.25 and 3.75 Ibs/cu. ft. respectively.
Patent GB-153851-A (GB)
Title: Improvements in buffers for railway and like vehicles
IPC: B61G11/08
Filed: 1920-05-07
Abstract: 153,851. Spencer, A. May 7, 1920. Buffers.-In a railway buffer of the type described in Specification 415/08 having both main and supplementary springs for absorbing the initial and final shocks, a flanged sleeve G is fixed to the back plate of the buffer casing C and projects through the supplementary spring J. The flange on sleeve G supports the base of main spring H and the end of the buffer spindle F just enters the sleeve G when the buffer is fully extended. The lengths of spindle F and sleeve G are so proportioned that the end of the spindle F does not project beyond the back plate C when the buffer is fully compressed. Specification 364/15 is also referred to.
Patent GB-697047-A (GB)
Title: Improvements in synchronous clock gear device
Inventor: BRUING PER-OLOF VILHELM
IPC: G04B13/00
Filed: 1951-05-30
Abstract: 697,047. Electric clocks. KOOPERATIVA FORBUNDET, FORENING U.P.A. May 30, 1951, No. 12764/51. Class 139 [Also in Group XXIV] The toothed rotor 2 of a synchronous electric motor drives the hour-hand wheel 5 and the minute-hand shaft 6 of an electric clock through cascade epicyclic eccentric gearing. The rotor is enclosed by pole shoes 1 connected by a yoke on which is mounted the energizing coil 4, and is mounted in a casing having stepped infernal teeth 8. The shaft 6 concentrically supports the rotor 2, the wheel 5 which carries the hour-hand and has internal teeth 10, and two intermediate wheels each having also internal teeth 10. Eccentric hubs 12 on the rotor 2 and on the intermediate wheels gyrate three stepped planetary gears whose teeth 7 engage the fixed teeth 8 and whose teeth 9 drive the internally toothed wheels. The shaft 6 is secured, as shown, to the intermediate wheel on the left of Fig. 3.
Patent GB-1353031-A (GB)
Title: Removal of unwanted projections from articles
Inventor: RICE E E
IPC: B23D79/00
Filed: 1971-05-03
Abstract: 1353031 Removing metal by fusion CHEMOTRONICS INTERNATIONAL Inc 3 May 1971 [25 May 1970] 12784/71 Heading B3V [Also in Division F2] Projections are removed from an article 10 by exploding a fuel such as a gas in an enclosed space formed by a chamber part 12 and a movable article support 14. The support 14, which includes a male member 51 having an annular cross-section and carrying a replaceable seal 52, is lifted from an indexing table 19 so as to form an enclosed chamber by a push rod 35 which is raised by a piston and cylinder device 31, 32 via toggle linkage 33, 34. A gas mixture comprising oxygen and hydrogen or methane, or containing propane or butane is introduced into the chamber from lines 103, 104 and is exploded by a spark plug 46. The sequence of operations is controlled by limit switches.
Patent GB-1601659-A (GB)
Title: Production of derivatives of straight-chained perfluorinated olefins
IPC: C07C43/12
Filed: 1978-04-03
Abstract: To prepare surface-active compounds, straight-chain perfluoroolefins or mixtures thereof are reacted with nucleophilic substances. The straight-chain perfluoroolefins having 5 to 20 carbon atoms contain terminal and internal [lacuna] and optionally several double bonds in the molecule. The reaction is carried out in a solvent at normal pressure or at elevated pressure and at temperatures from 20 to 150 DEG C. The compounds of the straight-chain perfluoroolefins prepared have surface-active properties, including hydrophobic/oleophobic properties, or are suitable as intermediates for obtaining compounds of this type. They are used in electrotechnology as additives in chroming baths, as highly effective additives in fire extinguishers, as mould release agents, antifouling agents, flow agents, emulsifiers and as finishing agents for textiles, leather and paper.