baber/WOPTO huggingface dataset:
Patent GB-274514-A (GB)
Title: Improvements relating to multiple thermionic valves
IPC: H01J21/20
Filed: 1927-07-19
Abstract: 274,514. Loewe, S. July 19, 1926, [Convention date]. Vacuum tubes. - In multiple thermionic valves with several amplifier stages, each comprising a separate incandescent cathode, a grid and an anode, enclosed in a common envelope usually together with coupling elements, screens separated from the wall of the envelope are provided to prevent periodic disturbances apparently due to periodic charges on the envelope and condensers produced by the streams of electrons and ions. The electrode system of the final stage 10, Fig. 2, may be enclosed in an electrostatic metallic screen 18, which is cylindrical with closed ends when the electrodes are cylindrical. The screen 18 comprises halves secured together by wires 23, 24 through eyes at the joints. It is made from sheet nickel or nickel alloy and has apertures 29 for the electrode leads and supports. In modifications, the screens limit the movement of electrons and ions mechanically and are of insulating material. A cylindrical screen with ends closed by discs may be made from mica or the screen may comprise glass or mica discs. The mica discs may be coated with magnesium in the usual vaporization. The metallic screens may be connected inside the envelope to a point of constant potential, positive when the vacuum is high and negative when there are traces of gas, for example, to an anode, lead or to the negative end of the filament. Alternatively the earlier electrode systems or the coupling elements may be surrounded or masked by screens which do not enclose them hermetically. Periodic charges on the glass walls may be prevented by connecting the magnesium deposit on the walls to a point of constant potential, preferably inside the envelope, through a wire fused to the envelope. The Specification as open to inspection under Sect. 91 (3) (a) comprises also the following constructions. Several amplifier stages 8 - - 10, Fig. 3 (Cancelled), with coupling condensers 15, 16 and grid leaks 13, 14 are mounted in one envelope and the anode of one of the stages other than the last 10, for example, of stage 8, is connected directly to lead-in 18<1> without any anode resistance, the other stages having anode resistances 12. A tuned circuit or back-coupling coil can be connected to the lead 18' to increase selectivity or an ohmic resistance can be used to obtain the usual aperiodic amplification produced by multiple valves. Filaments 2 - - 4 of the stages 8 - - 10, Fig. 4 (Cancelled), are connected in series with resistance 19<1>, and correct grid-bias is obtained by connecting the grid circuits to points of the filament circuit. The grid leak 13 of stage. 9 is connected to the negative end of the filament 2 of stage 8. The grid-leak 14 of stage 10 may be connected to the same point or to the resistance 19<1>. This multiple valve thus has only five lead-in wires and is suitable for apparatus connected to electric mains. This subject-matter does not appear in the Specification as accepted.
Patent GB-1082747-A (GB)
Title: Improvements in printers
IPC: B41J9/26
Filed: 1966-05-02
Abstract: 1,082,747. Selective Printers. INTERNATIONAL BUSINESS MACHINES CORPORATION. May 2, 1966 [May 24, 1965], No. 19175/66. Heading B6F. Type-case machines; hammer impression arrangements.-The print hammer mechanism and the printer having a horizontal type-bar consisting of a flexible sheet metal comb mounted releasably in the type-bar and provided with a plurality of types mounted on the distal end of each tooth of the comb is identical with that described in Specification 1,002,052. Uniform impression arrangements; type-surfaces.-Types 63 mounted on the distal ends of the teeth of the comb are stylized for printing of characters with magnetic ink and the characters have an asymmetric impression area. To enable use of the types in the above printers the rear surfaces of the types which are struck by the hammers are modified by inclining the plane of the rear surface at an angle with respect to the plane of the hammer impact surface so that a large impression area of the character is impacted first against the second medium and a small impression area is impacted subsequently. The rear surface of type 63 is recessed along lines 63b, 63c as shown in Fig. 10, whereby the type 63 on impact is distorted torsionally with respect to its supporting tooth. Platen arrangements.-Roller platen 12 (Fig. 1) is provided with axially extending platen inserts 16 for backing up a printing medium 18.
Patent GB-1371673-A (GB)
Title: Arrangement for the actuation of an electromagnetic actuation of an electromagnetic actuated control element
IPC: G05D3/18
Filed: 1972-04-25
Abstract: 1371673 Electric control DAIMLER-BENZ A G 25 April 1972 [26 April 1971] 19189/72 An arrangement for controlling a rod in a diesel engine fuel injection pump comprises an electromagnetically actuated control element which is displaced automatically as a function of a D.C. control voltage representing engine speed wherein the voltage is chopped into a rectangular pulse voltage having a constant amplitude and having a pulse interval and pulse width which vary in such a manner that the average value of the pulse voltage is equal to the control voltage, the effect of the pulse voltage on the element being opposed by a loading on the element produced by a spring. The D.C. voltage is applied through series resistor 37 to a non-inverting input of amplifier 36. The amplifier output is connected through positive feedback resistor 42, of resistance ten times that of series resistor 37, to the non- inverting input of the amplifier and through resistor 38 to a capacitor 39 and an inverting input of the amplifier. Thus for positive voltage output on the amplifier the capacitor charges until it reaches the value of the voltage at the non-inverting input when the amplifier is tripped. Its output becomes negative, turning on power transistor 41 to actuate the electromagnet. The voltage of capacitor falls until it is less than the voltage at the inverting input. Then the amplifier trips back and 41 goes off. The arrangement is said to overcome friction of the rod more reliably.
Patent GB-574884-A (GB)
Title: Improvements in or relating to collapsible vehicles
IPC: B62B1/20
Filed: 1943-11-17
Abstract: 574,884. Hinges. KOLLER, E. Nov. 17, 1943, No. 19206. Convention date, June 11. [Class 65 (ii)] [Also in Group XXXII] A hinge, for a collapsible vehicle, which is adjustable to hold the floor and sides of the vehicle at various inclinations comprises a screwed pin 12 fixed to an end floor member 4a and passing through holes in a depending member 14 and another end floor member 4b, the ends of all these members being in the form of discs, the discs on the end floor members being provided with circumferential holes 20 and the disc of the depending member being provided with two pins 19 which enter registering holes when all the discs are clamped together by the handle 22. The depending member 14 is connected by hinged struts 5a, 5b to the hinged sides of the vehicle and a sliding sleeve 17 around the depending member is connected by brackets 15a, 15b with the end floor members 4a, 4b. A hinge 13 at the other end of the vehicle opens in the same direction and may be of identical construction to the hinge 12.
Patent GB-990311-A (GB)
Title: Compositions containing vinyl chloride polymers
Inventor: RUBENS LOUIS CHARLES
IPC: C08F259/04
Filed: 1963-05-15
Abstract: Flowable compositions comprise 35 to 65% by weight of finely divided solid vinyl chloride polymer suspended in a liquid mixture of one or more polymerizable monovinyl aromatic monomers and one or more polyethylenic ally unsaturated monomers which are esters of ethylenically unsaturated aliphatic carboxylic acids.  The vinyl chloride polymer may be polyvinyl chloride or a copolymer of vinyl chloride with vinyl esters, acrylic or methacrylic esters, acrylonitrile or vinylidene chloride. Specified vinyl aromatic monomers are styrene, vinyl toluene, vinyl xylene, ethylstyrene, isopropylstyrene, chlorostyrene, dichlorostyrene, bromostyrene, fluorostyrene, ethylchlorostyrene, methylchlorostyrene and diethylstyrene.  The ester may be an ester of acrylic or methacrylic acid with vinyl alcohol, allyl alcohol, methallyl alcohol, glycerol, 1,3-propane diol, or a glycol or polyglycol of average molecular weight not more than 600, or an ester of maleic, fumaric, itaconic or citraconic acid with a glycol or polyglycol such that the ester has a molecular weight of 258 to 2000.  The compositions may also comprise acrylonitrile, and may be moulded optionally in the presence of reinforcing agents such as cloth, wood fibres, cotton linters, glass fibres, glass cloth and paper, and cured by heating or irradiation to form rigid articles or laminates. In examples, compositions comprising polyvinyl chloride and (1) styrene and ethylene glycol dimethacrylate, (2) vinyl toluene and 1,2-propylene glyco maleate and (3) vinyl toluene and ethylene glycol dimethacrylate are poured on to chopped strand glass fibre mats, pressed and cured by irradiation; and compositions comprising polyvinyl chloride and vinyl toluene together with (4) tetrapropylene glycol dimaleate, (5) acrylonitrile and ethylene glycol maleate and (6) acrylonitrile and vinyl acrylate, vinyl methacrylate, allyl methacrylate, ethylene glycol diacrylate, ethylene glycol dimethacrylate, propylene glycol maleate and polypropylene glycol maleate are poured into moulds and cured by irradiation.
Patent GB-120663-A (GB)
Title: Method of and Means for Initiating the Combustion of Hydrocarbon Fuels.
IPC: F23C99/00
Filed: 1917-12-31
Abstract: 120,663. Marks, E. C. R., (General Engineering Co.). Dec. 31, 1917. Lighting burners by electric devices.-The ignition of a perfectly combustible mixture of oil spray and air is effected by first igniting, by means of an electric spark, a richer mixture of oil spray and air, which is then carried into the poorer mixture so as to ignite it. Figs. 1 and 2 show two parallel vertical sections of part of a, motorvehicle water tube steam generator and its heater. Oil is fed from a manifold D' to the main burner or burners D, C, Fig. 1, and to the igniting burner L, Fig. 2; the apparatus described has two main burners and one igniting burner between them. A perfectly combustible mixture of spray and air is formed in the tube C, and a richer and more readily ignitable mixture is formed in the chamber J, Fig. 2, between them The oil enters each of the main burners through an orifice D<6> in a small venturi tube D, and is carried forward by the air from a blower A' through the tube D into the large venturi tube C and a bowlshaped combustion chamber G, where it is ignited by the flame from the chamber J, Fig. 2. In the igniting-burner the oil from the orifice L<2> is sprayed by air from the nipple L<3>, which carries it forward to the terminals N of the sparking- plug. The outlet from the chamber J has an upturned lip K to carry the flame into the path of the mixture from the tube C. Openings J<1> allow small quantities of air to pass from the blower A' to the chamber J.
Patent GB-1312586-A (GB)
Title: Process for the production of 1,1,-trichloroethane
IPC: C07C17/10
Filed: 1971-06-08
Abstract: 1312586 1,1,1-Trichloroethane SOLVAY & CIE 8 June 1971 [8 June 1970 19 Nov 1970] 19460/71 Heading C2C 1,1,1-Trichloroethane is produced by photochemical chlorination of 1,1-dichloroethane in the vapour phase at 60-150‹ C. using actinic light of wavelength 2500 to 4500 Angstroms, the chlorine : 1,1-dichlorethane molar ratio being 1 : 1 to 4 : 1 and the residence time of the reagents in the reactor being 1/ 50 n to 1/ 2500 n seconds, where n is the square root of the luminous intensity absorbed by the chlorine, expressed in Einsteins per litre per second. Unreacted chlorine and 1,1-dichloroethane may be separated from the reaction mixture and recycled. The 1,1-dichloroethane may be obtained by hydrochlorination of vinyl chloride, and hydrogen chloride obtained from the above chlorination reaction may be recycled to the hydrochlorinator. The chlorination reactor may be annular, spiral or tubular. The light source or sources may be placed in the middle of the reactor, or between parallel reactors, or perpendicularly to a bundle of tubular reactors.
Patent GB-753785-A (GB)
Title: Improvements in or relating to frequency modulated distance measuring radio equipment
IPC: G01S13/34
Filed: 1954-07-02
Abstract: 753,785. Automatic frequency control. COMPAGNIE GENERALE DE TELEGRAPHIE SANS FIL. July 2, 1954 [July 2, 1953], No. 19468/54. Class 38 (4). [Also in Group XL (c)] In a frequency-modulated radar in which the contemporaneous transmitted and received signals are heterodyned to give a beat frequency indicative of range, means are provided for measuring and/or automatically stabilizing the frequency deviation #F and the mean frequency fm of the transmitter. As shown, the frequency f of the transmitter 1 is varied sinusoidally, curve C, Fig. 2, by the output from modulator 2 and an output from transmitter 1 is heterodymed in mixer 6 with a carrier fo and side bands foŒFo obtained by amplitude modulating a stable oscillator 5 of frequency fo with the output from a stable oscillator 4 (frequency Fo), the values of fo and Fo being such that curve C does not exceed the limits foŒFo. The output from mixer 6 is applied through a low-pass filter 7 to frequency counters 81 and 82 which are both rendered operative for equal periods (tl - t2) and (t3 - t4) occurring at the maximum and minimum respectively of curve C, the control being effected by a timebase generator 9 synchronized with the modulator 2. The counters 81 and 82 are connected to discriminators 10 and 11 respectively and each counter counts the number N1 of cycles of the beat frequency {(fo+Fo)-f} during period (t1 - t2) and the number N2 of cycles of the beat frequency {f - (fo - Fo)} during the period (t3 - t4) but counter 81 is reset at the end of each modulation cycle whereas counter 82 is reset at the end of each half cycle so that the outputs from discriminators 10 and 11 are proportional to (N1+N2) and (N1 - N2) respectively and it is shown that (N1+N2) is dependent on #F and independent of fm whereas (N1 -N2) is dependent on fm and independent of #F; accordingly the output from discriminator 10 is applied to control the amplitude of the output from the modulator 2 and the output from discriminator 11 is applied to control the mean frequency fm of transmitter 1; the output from discriminator 10 may also be applied to an indicator displaying the value of #F. Any form of frequency modulation may be employed in which there are no discontinuities during the periods (t1 - t2) and (t3 - t4).
Patent GB-377800-A (GB)
Title: Improvements in hosiery
IPC: D04B1/26
Filed: 1931-07-07
Abstract: 377,800. Wearing-apparel. HOLT, W., Woodleigh, Woolfold, Bury. July 7, 1931, No. 19525. [Class 141.] A fabric article or garment is knitted wholly or in part with braided strands or cords or woven tape. The braided &c. material may be introduced only at the parts subjected to wear, such as the heels, toes, and feet of socks &c., or the arms and legs of other garments.
Patent GB-613747-A (GB)
Title: Improvements in gulleys or catchpits for surface drainage purposes
IPC: E03F5/02
Filed: 1946-07-01
Abstract: 613,747. Catchpits. HUGHES, E. N. July 1,1946. Nos. 19541 and 25324. [Class 33] Gulley or catchpit sections are assembled to form a complete gulley or catchpit and have one or more openings in the walls complementary in adjacent sections. As shown a catchpit is formed of a bottom section 20 two intermediate sections 21 and 22 which have semi-circular apertures formed complementarily in their side walls into which connections of various sections may be fitted, further sections 23 and 24 and finally a gulley cover 32. The connections having an annular recess formed between flanges 34 and 19, Fig. 5, may be of different bore, Figs. 6-8 (not shown), or shape, Figs. 10 and 11 (not shown), or may be blank, Fig. 9 (not shown), and the walls or section are reduced to accommodate the recess. The sections and connections may be jointed by grouting or cement. Gulleys and connections may be arranged on opposite sides of a roadway and interconnected by pipes to discharge into a main drainage line Fig. 1 (not shown).
Patent GB-1379724-A (GB)
Title: Racket for tennis and similar games
IPC: A63B51/12
Filed: 1973-04-25
Abstract: 1379724 Tennis rackets R STEVENS 25 April 1973 [10 May 1972 26 March 1973] 19550/73 Heading A6D In a tennis racket, in which the tension in the strings is adjustable by extending the vertical strings in proportion to their individual lengths so that the consequent deformation of the loop of racket head results in a corresponding extension of the individual lateral strings, the lower ends of the vertical strings are secured to arms 14, which slide on the outer periphery of the loop, as the junction 38, 60 between them is pulled away from the loop. The pull is exerted on rod 40 by a differential screw mechanism 46 or 64. A plastics insert 32 may be arranged in the neck of the racket.
Patent GB-401430-A (GB)
Title: Improvements in electromagnetic separators
IPC: B03C1/08
Filed: 1932-07-12
Abstract: 401,430. Magnetic separators. MORRIS, S., 42, Hanover Street, Burslem, Staffordshire. July 12, 1932, No. 19630. [Class 72.] In a magnetic separator of the trough or tray type, pole shoes 1, 2 are secured to the end of cores 11 or electromagnets 12 arranged in water-tight non-magnetic boxes 9 placed above the trough and provided with a cover 10 to which the magnets are secured, the cover being pivoted on a loose pin 7. The shoes 1, 2 are provided with serrations 3 and projections 4 which project from the upper and lower surfaces of the shoes, the lower projections 4 resting on the floor of the trough 5. Intermediate shoes 6 which may be secured to the main poles by non-magnetic fastenings and which are magnetized by induction from the shoes 1, 2 are mounted in the trough 5 between the shoes. A pivoted tray 17 is provided with an armature 18 which during the working of the separator is held against a shoe 2 ; if the shoe becomes demagnetized, the tray 17 falls away from the shoe and so reverses the outlet flow of the material being treated.
Patent GB-1410394-A (GB)
Title: High speed tray former and loader
IPC: B65B5/02
Filed: 1973-04-25
Abstract: 1410394 Filling and erecting tray blanks A-T-O Inc 25 April 1973 [19 Jan 1973] 19638/73 Headings B8C and B8P Articles 15 are gathered into a group which is fed on to a tray blank supplied from a magazine 18, the blank then being moved to an erection station 24 where a pusher 272 urges the articles and blank downwardly to erect the tray. The articles are fed on a conveyer 14 to longitudinally extending partition plates 30 positioned above a grouping conveyer 16 moving slower than the conveyer 14. An overhead conveyer 22 then feeds the groups of articles through the apparatus. In the magazine 18 a stack of the blanks is held by adjustable guides with the bottom blank being moved by a reciprocating member from the stack to feed rollers which supply each blank to a pair of shafts (130, 136, Fig. 9, not shown) positioned above a pocket tray forming conveyer 20. The shafts have fingers which lower a blank on to rollers 160 on a pair of adjacent pockets in the conveyer 20. A group of articles is then deposited on a blank. At the station 24 a slide assembly 214 is horizontally reciprocated along rods 210, 212 by a cam follower engaging in a groove in a cylinder (230) on a shaft 234. The pusher 272 is mounted on a sub-assembly 229, 258, 228 which is vertically reciprocated in the assembly 214 by a bellcrank lever one arm of which engages in a groove in another cylinder 232 on the shaft 234. The pusher 272 whilst moving longitudinally with the blank pushes the articles and blank downwardly into a pair of pockets in the conveyer 20 while the rollers 160 fold the ends and sides of the blank upwardly. Spray heads 200, 202 apply glue, and arcuate strips 166 fold the comer gusset flaps upwardly against the extremities of the ends and sides. The various parts of the apparatus are adjustably mounted for use with containers and trays of different sizes.
Patent GB-932639-A (GB)
Title: Guide-box for rolling-mills
IPC: B21B39/16
Filed: 1962-05-22
Abstract: 932,639. Rolling. NYBY BRUKS A.B. May 22, 1962 [May 31, 1961], No. 19675/62. Class 83 (4). A guide box for rolling mills contains at least two steering rollers, for guiding the material to be rolled, which are mounted on U-shaped springs and partially enclose an auxiliary steering device. As shown, each of four auxiliary steering devices, consisting of channels having broad openings 8 and narrower exits 9, has on each side of its exit a roller 15 mounted on a U-shaped spring 16 having limbs 17 and 18, the rollers 15 being common between adjacent exits 9. Bolts having conical heads 21 are used to adjust the angle of the springs 16 by acting on tapered portions of the limbs 18, bolts 23 locking the limbs in position. Spacing rods 12 and 13 which may be tapered determine the spacing of the auxiliary steering devices.
Patent GB-715760-A (GB)
Title: Improvements in and relating to suction hoods for grinding discs and the like
IPC: B24B55/10
Filed: 1951-08-21
Abstract: 715,760. Dust confining and removing in industrial processes. BILLAU, J. R., and COOK, E. Nov. 21, 1952 [Aug. 21, 1951], No. 19702/51.. Class 8 (2). A dust collecting suction hood 13, Fig. 2, for metric to the disc axis to provide a wider use with a portable power actuated flexible suction passage at one side. The rib 23 is secured abrading disc 10 has the lower edges of sides 19 to a portion 21, Fig. 4, of the hood floor 20 located in a plane parallel to but slightly below movable in guides 22 so as to extend beneath the that of the unflexed disc, and an open end 18 inoperative portion of the disc. The pivoted partly covering the disc and about which the cover 24 is prevented from falling below the hood may be tilted e.g., about workpiece enplane of the hood on lifting the apparatus by gaging rib 23 or feet at any desired angle to lugs 27 adjacent pins 26 and abutting the hood the workpiece; the operative part of the disc sides 19. A baffle 31 in the mouth of the rear 10 is covered by a visor-like cover 24 pivoted portion of the hood which is tapered prevents to the hood at pins 26 and having a disc viewdust being swept outwardly of the hood by the ing window 28, the hood and cover being asyrotating disc 10.