baber/WOPTO huggingface dataset:
Patent GB-627391-A (GB)
Title: Improvements in manure drills
IPC: A01C15/00
Filed: 1947-09-10
Abstract: 627,391. Manure distributers. AKTIESELSKABET GYRO SKIVE JERNSTOBERI & MASKINFABRIK. Sept. 10, 1347, No. 24856. Convention date, Nov. 9, 1946. [Class 6(i)] Relates to manure distributers of the kind having an elongated hopper 2, mounted on a wheeled frame 3, the hopper having bottom orifices throughwhich manure passes to pans rotating about vertical axes. According to the invention, the pans are situated at a level lower than the tops of the land-wheels and scatter material forwardly of the hopper. The hopper 2 is mounted on the frame 3 in front of the land wheels 1 and the pans are driven therefrom by chains 16, 17. The hopper, which is longer than the distance between the land wheels, is rotatable about a horizontal pivot 7 into a longitudinal, transport position 2<SP>1</SP>. In order to render this possible, one of the land wheels is readily removable and the frame is supported on this side by a retractible jack 18. Pins 12, 13 secure the hopper in its working position.
Patent GB-1224542-A (GB)
Title: Motion picture camera
Inventor: MCGILLION ROBERT W
IPC: G03B7/085
Filed: 1968-05-24
Abstract: 1,224,542. Cine cameras. EASTMAN KODAK CO. May 24, 1968 [May 29,1967], No.24864/68. Heading G2E . In a cine camera having an exposure control circuit comprising photo-responsive element P, galvonometer M which sets the diaphragm vanes, and voltage source V 3 , fade-in and fade-out effects are provided by the selective application of gradually increasing or decreasing voltages across the meter. For fade-out, switch S contacts prints 1 and 2 and condenser C 1  charges from source V 1 , greater than V 3 , through a resistor R, this greater voltage being applied across M and the parallel capacitor C 2 . Meter M therefore slowly closes the aperture dependent on the value of R and C 1  and C 2 . For fade-in, switch S is first set to fade-out to ensure that the aperture is closed, arid then to points 4, 6 to discharge C 1  and permit discharging of C 2  depending on the values of C 2 , R m .
Patent GB-717330-A (GB)
Title: Improvements relating to x-ray microscopes
Inventor: DYSON JAMES
IPC: G21K7/00
Filed: 1951-10-24
Abstract: 717,330. X-ray microscopes. ASSOCIATED ELECTRICAL INDUSTRIES, Ltd. Oct. 22, 1952 [Oct. 24, 1951], No. 24879/S1. Class 97(1) In an X-ray microscope in which the object is imaged by reflection by a curved mirror surface provided with an aperture stop located on the image side of the mirror to correct field obliquity, the stop is located substantially at a distance iR/3 afrom the point of incidence of the principal ray on the mirror, where i is the glancing angle of incidence of the principal ray (in radius) and R the radius of curvature of the mirror at the point of incidence. Alternatively, the object is imaged by at least two curved mirrors having their axes mutually at right angles and having an aperture stop on the image side of each mirror to correct field obliquity, each stop being located at a distance iR/3 from the point of incidence of the principal ray on the respective mirror. If the mirror is circular, circular aberration is present, but may be reduced by making the cross-section of the reflecting surface correspond to the curve given by the polar equation: where @ r are polar co-ordinates with the origin at the focal point. and A, B are constants chosen for minimum circular aberration. The required shape is obtained either by local polishing of the mirror or by bending a plate of non-uniform crosssection. The or each mirror may be replaced by a pair of mirrors M1, M2, Fig. 3, with their concavities facing in the same direction. The dimensions satisfy the equations where R 1 , R, are the radii of mirrors M1, M2 respectively, and the other dimensions are as shown. Field obliquity and circular aberration are cor rected. Curvature of field is corrected by choice of the position of the the stop S.
Patent GB-923499-A (GB)
Title: Improvements in or relating to methods of and apparatus for producing shell moulds
IPC: B22C23/00
Filed: 1959-07-20
Abstract: 923,499. Moulding-machines. POLYGRAM CASTING CO. Ltd. July 20, 1959 [July 19, 1958], No. 24904/59. Class 83 (1). In a shell-moulding apparatus the mix is lifted into contact with the pattern 5 by compressed air applied beneath the air-pervious diaphragm 2, e.g. of ceramic or perforated metal which is impervious to the mould mix. Release of the air pressure allows excess mix to fall back on to the diaphragm. Specification 821,611 is referred to.
Patent GB-481525-A (GB)
Title: Improvements in or relating to pyrophoric pocket lighters, cigarette cases and compacts
IPC: A24F15/18
Filed: 1936-09-12
Abstract: 481,525. Cigarette &c. cases. CURWEN & CO., Ltd., W. M., and STERN, P. M. Sept. 12, 1936, No. 24912. [Class 18] [Also in Group XI] A pyrophoric igniter 1 is detachably secured to a cigarette case 14 by sliding an end of the fuel reservoir into an extension 8 on one end of the case and may be retained therein by a spring catch. The lid of the case may be hinged at the side or bottom. In modifications, the case comprises two compartments for cigarettes and face powder or the like respectively, hinged lids opening from a central partition, or one side of the case, secured to the end carrying the extension 8. The Provisional Specification describes also a construction in which the igniter is secured to the case by two pins on the bottom of the reservoir engaging bayonet slots in the top wall of the case.
Patent GB-628206-A (GB)
Title: Improvements relating to contact breakers for electric spark ignition apparatus for internal combustion engines
IPC: F02P5/10
Filed: 1947-09-11
Abstract: 628,206. Interrupters. LUCAS, Ltd., J., and GILBERT, B. Sept. 11, 1947, No. 24938. [Class 38(v)] An ignition contact - breaker - in which the timing is automatically adjusted by the pressure in the fuel induction system, comprises a contact arm a actuated by a cam e through a slidable heel f, and has a chamber g connected at i to the induction system. A diaphragm h in the chamber has a stem j slidable through the chamber wall and provided with an adjustable screwed head k, between which and the chamber is compressed a pair of springs n, o. A stirrup m supporting the heel f embraces the stem j and is connected between the springs n, o, so that as the pressure in the cham. ber g decreases, the head k compresses the springs and moves the heel a correspondingly smaller amount to adjust the ignition timing. The diaphragm may be replaced by a piston, and the stirrup may be connected to an intermediate part of a single spring.
Patent GB-467260-A (GB)
Title: Improvements relating to skip hoists especially for mines
IPC: B66B17/26
Filed: 1935-09-07
Abstract: 467,260. Skips. DEMAG AKT.-GES. Sept. 7, 1935, No. 24987. Convention date, Sept. 8, 1934. [Class 78 (iv)] A skip hoist in which the hoisting cable or a cable sus. pended from the skip to main. tain the moving masses approximately constant, is connected elastically to the skip frame and an auxiliary device is provided for such a purpose as raising and lowering an anti-breakage flap is characterized by the provision of an energy-converter, such as a piston and cylinder device, which is operated by relative movement between the connecting gear of the cable and the skip frame and which supplies the energy for operating the auxiliary device. In the embodiment shown, a cable 9 is suspended from a beam 10 supported on the skip by springs 11. Each time the skip is raised or accelerated or retarded the resulting relative movement between the cable and skip effects movement of the piston 12 of an air-compressor 13 whereby a pressure is built-up in pipes 14, 17 to raise a piston 19 in a cylinder 18 and hold an antibreakage flap 22 in its operative position. When the skip is loaded, it is depressed by the charge relative to the cable 3, the skip being connected to a beam 5 on the cable through a rod 7 and spring 8. This movement causes an arm 23 to adjust a cock 16 so that communication with the pipe 14 is interrupted and the pipe 17 communicates with the atmosphere. The piston 19 now moves downwardly and the plate 22 falls, the charge falling into the bottom of the skip. When the skip is emptied, the spring 8 gradually expands and the arm 23 returns the cock to a position in which communication between the pipes 14, 17 is restored. The Specification as open to inspection under Sect. 91 comprises also the subject-matter of Specification 467,331. This does not appear in the Specification as accepted.
Patent GB-505951-A (GB)
Title: Improvements in or relating to electric discharge devices
IPC: H01J17/06
Filed: 1938-08-25
Abstract: 505,951. Thermionic cathodes. WESTINGHOUSE ELECTRIC & MANUFACTUR. ING CO. Aug. 25, 1938, No. 25012. Convention date, Sept. 16, 1937. [Class 39 (i)] A cathode comprises a core formed from ribbon material so shaped as to provide a passage extending therethrough which increases in cross-sectional area along part or the whole of its length. In the form shown, the cathode core 7 is formed by winding up into a helix a tapered nickel or nickel-cobalt ribbon coated with barium and strontium oxides. The core is assembled with a heater 5 embedded in a refractory coating 8 surrounded by metallic sleeves 9, 11 supporting the cathode from the envelope 1 and the sleeve 11 may have a reflecting coating. The tube may contain mercury 12 or a permanent gas and may have fluid cooled surfaces above the cathode. The control electrode 3 may be of carbonized nickel mesh wires À02 centimetres in diameter and be spaced two centimetres from the face of the anode 2. Suitable dimensions of the cathode are given.
Patent GB-1268709-A (GB)
Title: Monitoring dust concentration
Inventor: BADZIOCH STANISLAW
IPC: G01N15/06
Filed: 1969-05-16
Abstract: 1,268,709. Gas analysis. COAL INDUSTRY (PATENTS) Ltd. May 5, 1970 [May 16, 1969], No. 25012/69. Heading G1B. The concentration of dust in a gas stream is obtained by passing the dust laden gas stream into a centrifugal flow separating device 10 and either monitoring the difference in pressure at the inlet 12 and outlet 16 of the device while maintaining constant the rate of gas flow through the device or monitoring the rate of gas flow through the device while maintaining constant the pressure difference between the inlet and outlet of the device, the monitored value being indicative of the dust concentration. As shown, a pressure transducer 34 which may actuate a recorder is connected across the inlet 12 and outlet 16 of a cyclone 10 having a closeable opening 18 located above a hopper 20. At predetermined intervals the dust in a gas stream is allowed to accumulate in the cyclone 10 during pre-selected times and the consequential decreases in pressure difference at the inlet and outlet are indicative of the dust concentrations in the gas stream during the pre-selected times, the rate of flow of gas through the cyclone being maintained constant by a critical orifice or servooperated valve 24 which is connected in a conduit 26 leading to a gas impeller. In an alternative embodiment, Fig. 2 (not shown), a device (42) which is controlled by the pressures at the inlet (12) and outlet (16) of a cyclone (10) maintains the pressure difference constant and a flowmeter 40 senses changes in gas flow to indicate dust concentration in a gas stream fed to the cyclone (10). In either embodiment an alarm may be actuated automatically to indicate when a pre-selected dust concentration is exceeded and signals indicative of dust concentration may be utilized for control of a plant.
Patent GB-1182712-A (GB)
Title: Improvements in Symbol Reading System
IPC: G06V30/224
Filed: 1967-05-31
Abstract: 1,182,712. Character recognition. GENERAL ELECTRIC CO. 31 May, 1967 [31 May, 1966 (2)], No. 25017/67. Heading G4R. A system for reading symbols each formed of a plurality of spaced substantially parallel bars with a distinctive combination of narrow and wider spacings between the centre-lines of the bars, scans the symbol optically to feed a peak detector which produces a signal pulse for each bar, having its leading edge in synchronism with the centre-line of the bar, wide and narrow space indications being produced in response to lack of concurrence and concurrence respectively of such a signal pulse and a timing pulse, the timing pulses having been derived from the signal pulses. Fig. 4 shows symbols, each composed of five vertical bars selectively shortened and interrupted to make the symbols human-recognizable, the spacing between adjacent bars having one of two values, and the combination of spacings being characteristic of the individual symbol for machine recognition. In reading apparatus, a single horizontal scan across one of the symbols produces a waveform having a peak for each bar. Whenever the waveform amplitude exceeds a noise threshold, the output of a peak detector also fed with the waveform is gated to a series pair of singleshots, each pulse firing the first which fires the second. On occurrence of a given pulse, the state of the second singleshot is gated into a shift register so that a 1 is gated into the shift register in response to the first peak and each interpeak spacing having the larger value and a 0 is gated in in response to each interpeak spacing having the smaller value. Shift is controlled by the peak signals. Recognition logic is enabled to respond to the first four shift register stages after the 1 inserted in response to the first peak reaches the fifth stage, provided a cue symbol (last symbol in second line of Fig. 4) was detected previously (at the start of the line of symbols). Resetting occurs in the absence of a document. Error detection.-An error signal is produced after timing-out of a single-shot fired by the second peak signal if the fifth stage of the shift register still holds 0 at that time, i.e. if the number peak is less than 5. An error signal is also produced if there are more than 5 peaks as witnessed by a 1 in a sixth stage of the shift register, and if two adjacent peaks are too close together or too far apart. Error disables the recognition logic and rejects the document. Specification 1,182,711 which is referred to, claims a document printed with symbols from the font of Fig. 4 and describes the virtues of the font.
Patent GB-520329-A (GB)
Title: Improvements in or relating to gun fire control mechanisms
IPC: F41A17/08
Filed: 1938-08-25
Abstract: 520,329. Gun fire control. INDIA RUBBER, GUTTA PERCHA, & TELEGRAPH WORKS CO., Ltd., TARRIS, F. J., and WEBB, D. Aug. 25, 1938, No. 25057. [Classes 92 (i) and 92 (ii)] Relates to fluid-pressure-operated gun fire control means of the kind on which a main valve 29, Fig. 1, is operated, either to  supply pressure fluid to actuate the gun firing motor 22, or to permit the pressure fluid to escape to a return connection. According to the invention, an auxiliary valve 31, similar to the main control valve, is controlled by movements of the gun so as to prevent pressure fluid passing to the motor 22 when the gun is moved to an endangering .position. Fig. 1 shows a remotely-controlled hydraulic firing circuit for a gun 23 which includes reservoir 10, pump 12, accumulator 15, pressure pipe lines 16, 18, and exhaust pipe lines 24, 25. In series with the Bowden-operated main control valve 29 is the auxiliary control valve 31 having a follower 42 engaging a cam 35, Fig. 2, which, under elevation of the gun, slides in a bracket 36 which during training rotates round a vertical pivot 39 for the gun. Cam projections, corresponding to endangering positions of the gun,- cause the valve 31 to be moved against the action of a spring 32 to cut off the pressure supply to the gun firing motor 22 and permit of escape of the pressure fluid to the return line 24. Specifications 461,824, 488,489, [Group XXIX], and 500,725 are referred to.
Patent GB-275818-A (GB)
Title: Improvements in and relating to sweetmeat manufacturing machines or the like
IPC: A23G3/02
Filed: 1926-10-08
Abstract: 275,818. Berten & Co., Ges., and Henkel, E. Oct. 8, 1926. Addition to 272,363. Cutting-machines; rolling-machines. - The spindles on which the rollers are mounted as described in the parent Specification are provided at the ends remote from the rollers with tools g, h, i, for the manufacture of cut sweetmeats so that cut and rolled sweetmeats can be produced simultaneously. The feed pipe k for the cutting tools is laterally movable.
Patent GB-1193810-A (GB)
Title: Method of preparing a Nitride Nuclear Reactor Fuel
IPC: C01B21/06
Filed: 1969-05-16
Abstract: 1,193,810. Nuclear fuel; plutonium nitride. UNITED STATES ATOMIC ENERGY COMMISSION. 16 May, 1969 [6 June, 1968], No. 25076/69. Headings G6C and G6R. [Also in Division C1] A mononitride of U and/or Pu is prepared by mixing carbon and an oxide of U and/or Pu, passing N 2  through the mixture at 1500- 1700‹ C. until evolution of CO ceases, passing H 2  at 1000-1200‹ C. to remove free carbon as CH 4 , passing N 2  at 1000-1200‹ C. to displace combined carbon, repeating the passage of H 2  at 1000-1200‹ C., passing an inert gas, e.g. helium, at a temperature of at least 1500‹ C. to decompose higher nitrides, and cooling while continuing to pass the inert gas. In an example, UO 2 , PuO 2  and carbon are mixed and ballmilled, and the mixture pelleted and granulated with the addition of polyethylene glycol. The granules are treated in an electrically-heated tungsten reactor which is described with reference to a drawing. The nitride product is useful as a nuclear fuel for fast reactors. Reference is also made to the use of UO 3  as the starting material.
Patent GB-738923-A (GB)
Title: Improvements in or relating to electric circuits for the static balancing of bridge circuits provided with non-linear elements
IPC: H03F3/28
Filed: 1953-09-10
Abstract: 738,923. Valve circuits. NEDERLANDSE CENTRALE ORGANISATIE VOOR TOEGEPAST-NATUURWETENSCHAPPELIJK ONDERZOEK. Sept. 10. 1953 [Sept. 12. 19521. No. 25112/53. Class 40 (6). In a push-pull circuit including non- linear elements such as thermionic valves, a static balance is obtained by connecting the two branches of the circuit, viz. R1, R3 and R2, R4 (Fig. 3) to separate tapping-points 6, 7 respectively on a resistance network R, R6 connected across the supply source. Tapping-point 6 is fixed and point 7 adjustable, the resistance values being such that the resistance #R between these points at static balance is small compared with the resistances of the circuit arms. Stabilization against variations in the power supply is obtained by means of a gas-discharge tube S connected in parallel with the resistance R. A potentiometer R5 allows the dynamic balance of the circuit to be adjusted. In an embodiment, the non-linear push-pull elements comprise the screen grids of a pair of pentode valves 1, 2 (Fig. 4), the anode paths of which in parallel constitute the resistance R6 of Fig. 3.
Patent GB-1306693-A (GB)
Title: Process for polymerizing tetraoxane and certain products of the  process
IPC: C08G2/00
Filed: 1970-05-26
Abstract: 1306693 Tetraoxan polymerization DAICEL Ltd and UBE INDUSTRIES Ltd 26 May 1970 [26 May 1969 20 June 1969 9 March 1970 4 April 1970] 25112/70 Heading C3P Oxymethylene polymers, which may contain units derived from a thiirane, a thiocyanate or a trithianoxide either as comonomer, on chainends or on the stem of the polymer, are obtained by the polymerization of tetraoxan in the presence of sulphur, carbon disulphide, or certain specified classes of organic sulphur compounds. The polymerization is suitably carried out with solid phase monomer, and may be further promoted by the use of ionizing radiation or ultra-violet light, either prior to or during the polymerization. In examples the sulphur compound is CS 2 , methyl thiocyanate, trithian, dimethyl disulphide, methyl thioglycolate, methyl sulphide, S, thiourea, thiocetamide, ethylene trithiocarbonate, tetrahydrothiophen, ethylene thiourea, diethyl- or dimethyl-sulphate, dimethyl sulphone, dimethyl sulphoxide, glycol sulphite, dimethyl sulphite, ethylene-, propylene- and cyclohexene sulphide, methyl- or benzyl-thiocyanate, trimethylene tri-sulphone, tetrahydrothiophen-1-oxide or -1-dioxide, dihydrothiophen-1-oxide, thiophen and tetramethylene sulphone. Comparative experiments with trioxan are described.
Patent GB-367842-A (GB)
Title: Improvements in and connected with the distillation of tar
IPC: C10C1/04
Filed: 1930-08-22
Abstract: <PICT:0367842/III/1> <PICT:0367842/III/2> Hot coal gases from coke ovens are fractionally cooled to separate in the collector main a heavier tar having a melting point between 90-110 DEG  F. suitable for use as road tar without further treatment, and a lighter tar which is distilled.  The heavier tar is preferably obtained by cooling the hot gases in the collector main with gas house tar, the tar separating from the gases blending with the gas house tar to form the road tar.  The lighter tar is condensed in condensers and distilled by contact with fresh hot coke oven gases to give a distillate which is chilled and extracted for its naphthalene and tar acid content or blended to give a creosote.  The hot gases from a battery of coke ovens 5 pass through goosenecks 6 to a collector main 7 where they are cooled by ammonia liquor with or without gas house tar supplied through sprays 8, 9.  Alternatively the gas house tar may be flushed through the bottom of the main and the blended tar after passage through a decanter 14 is collected in a tank 15. The gases pass from the collector main through a crossover main 11 to condensers 12, 13 where a lighter tar is condensed and collected in decanter 17 and tank 18 from which it is delivered through a preheater coil 41, Fig. 2, and vapour chamber 42 to a sprayer 35 situated in a tower 8 at one end of a still 27 in which the tar is distilled by direct contact with hot gases from selected ovens of the coke oven plant which are collected in a header 26.  The tar is sprayed into the hot gases by a roll 28. Separate fractions distilled from the tar are condensed in condensers 44, 53 and the heat exchanger 29 and are stored in tanks 45, 51, 54.  Specifications 346,753, 347,107, and 351,388 are referred to.
Patent GB-518553-A (GB)
Title: Improvements in electron multipliers
IPC: H01J43/16
Filed: 1938-08-26
Abstract: 518,553. Electron multipliers. MARCONI'S WIRELESS TELEGRAPH CO., Ltd., and BANKS, G. B. Aug. 26, 1938, No. 25173. Addition to 511,449. [Class 39 (i)] In a multiplier the secondary emissive electrode 4 is " out of sight " of the barium coated cathode 1 the electrons being deflected by electrostatic means ; either the plate 8 or a coating on the envelope is used. The anode 6 is of grid form and with a second grid 5 forms a lens to direct the primary electrons on the electrode 4. A plate 7 shields the cathode from direct access to the electrode 4 ; the cathode is end on to the latter and the grid supports 2 assists in the shielding.