baber/WOPTO huggingface dataset:
Patent GB-272249-A (GB)
Title: Improvements in or relating to thermionic valves
IPC: H01J19/00
Filed: 1927-06-07
Abstract: 272,249. Telefunken Ges. f³r Drahtlose Telegraphie. June 4, 1926, [Convention date]. Vacuum tubes.- Secondary electron emission from a control grid or other electrode is reduced by arranging near the grid an auxiliary electrode in the form of a metal cage, ring or coil, partly surrounding the grid and maintained at a potential equal to or less than that of the cathode. The auxiliary electrode may be connected with the cathode by a lead within the bulb, or by a circuit outside the bulb. The length of the auxiliary electrode is preferably one-sixth of that of the control grid. The Specification, as open to inspection under Sect. 91 (3) (a) comprises also an auxiliary electrode H extending along the length of the control grid G and mounted between the grid and anode A. The electrode is connected with the cathode F by a lead 1. This subject-matter does not appear in the Specification as accepted.
Patent GB-377354-A (GB)
Title: Improvements in and relating to balls such as golf balls
IPC: A63B37/00
Filed: 1931-05-22
Abstract: 377,354. Golf &c. balls. PUGH, J. V., Meriden House, Meriden, Warwickshire. May 22, 1931, No. 15197. [Class 132 (ii).] In the manufacture of a golf ball the positions of the depressions and/or projections forming the surface pattern are located by dividing the surface into areas determined by joining (by means of the shortest arcs) the angular points of an inscribed regular tetrahedron, hexahedron, dodecahedron or icosahedron. As shown in Fig. 3, the outer surface is divided into twenty main spherical triangles indicated by dotted lines 1 and each triangle contains sixteen triangular depressions outlined by ribs 2 conforming to the spherical surface of the ball. In further examples, the triangles 1, instead of containing triangular depressions contain circular depressions, and additional circular depressions are arranged on the vertices and sides of the triangle. In a modification the division of the surface is defined by an inscribed octahedron, dividing the surface into eight spherical triangles, and each of these triangles is subdivided into thirty-six smaller triangles. In the form shown in Fig. 17, a plane area is left in the centre of each face to receive appropriate symbols or markings. In a modification, Fig. 22, the surface is divided into six main triangles by equal division of three segmental areas extending from opposite poles, and each of the six main triangles is subdivided into an equal number of parts to receive a symmetrical distribution of depressions.
Patent GB-860187-A (GB)
Title: Improvements in radiation gauges having ionization chambers
IPC: G01N23/08
Filed: 1956-05-15
Abstract: 860,187. Radiation gauges. POWELL, G. F. W., and MOLINS MACHINE CO. Ltd. May 14, 1957 [May 15, 1956], No. 15274/57. Divided out of 860,184. Class 40 (3). [Also in Group XL (a)] The quantity of tobacco T passing along a trough in a cigarette-making machine is monitored by measuring the radiation transmitted through it from a source 29 of strontium 90 to an ionization chamber 1 which is adjustable in sensitivity by rotating it (see Group XL (a)). The tobacco is carried on a paper web which slides in a trough P over the window 5 of the chamber, and thus keeps it clean of dust. To remove the chamber the source 29 is slid back over the massive bed of the machine and locked. A balancing chamber of similar construction is provided, and a spring flap is provided which screens the source if the chamber is removed. Specifications 781,041, 781,867 and 805,044 also are referred to.
Patent GB-529187-A (GB)
Title: Improvements in and relating to sheet metal pulleys
IPC: F16H55/44
Filed: 1939-05-24
Abstract: 529,187. Pulleys. UNITED-CARR FASTENER CORPORATION. May 24, 1939, No. 15398. Convention date, June 11, 1938. [Class 80 (i)] A one-piece sheet-metal pulley comprises a disc 1 having a central tubular shank 6, and a rim 2 extending to one side of the disc and formed with a groove to receive a drive cord. The end 7 of the shank 6 preferably extends slightly beyond the plane of the edge of the rim and a raised part 8 is provided at the opposite side, these parts 7 and 8 serving to space the rim slightly from the supports to which the pulley may be secured. The pulley is particularly for operating dial pointers in radio sets.
Patent GB-698138-A (GB)
Title: Process for producing trinitroalcohols and esters thereof
Filed: 1951-06-29
Abstract: In the preparation of a trinitroalcohol an aldehyde or ketone is reacted with nitroform in the presence of an inert solvent for the reaction components.  The reactions may be represented thus <FORM:0698138/IV (b)/1> and <FORM:0698138/IV (b)/2> in which R may be an alkyl, aryl, aralkyl or heterocyclic radical. The aldehydes and ketones used may be saturated or unsaturated, lower aliphatic saturated and unsaturated aldehydes such as formaldehyde, crotonaldehyde and acrolein being especially suitable.  Other starting materials mentioned include benzaldehyde, furfural, acetone, mesityl oxide and benzophenone. The solvent may consist of a reaction component, water, alcohols, dioxane and carbon tetrachloride.  The trinitroalcohols may be converted into derivatives by known methods, e.g. into stable organic or inorganic esters.  Esters may be produced directly by employing liquid carboxylic acid anhydrides as solvents. In examples, nitroform is dissolved in formaldehyde solution to yield trinitroethanol (1); in a methanolic solution containing nitric acid is mixed with formaldehyde solution to obtain trinitroethanol (2); in an aqueous solution is added to acetaldehyde with cooling to obtain trinitropropyl alcohol (3); is dissolved in ethyl alcohol with cooling to obtain a condensation product (4); is dissolved in a mixture of acetic anhydride and acetone to obtain trinitrobutylacetate (5); is dissolved in butyl alcohol containing furfural while cooling to obtain a condensation product (6); is added to mesityl oxide to obtain an oil (7); is dissolved in acetic anhydride and mixed with benzaldehyde to obtain a product of the formula <FORM:0698138/IV (b)/3> and may be reacted with nitrobenzaldehyde in water to obtain the corresponding trinitroalcohol (8) and dissolved in acetic anhydride is mixed with benzophenone to obtain a product of the formula <FORM:0698138/IV (b)/4>
Patent GB-481013-A (GB)
Title: Tubular scaffolding bracket
IPC: E04G7/18
Filed: 1936-06-03
Abstract: 481,013. Scaffold clamps. THORNTON, A. A., SHEEHY, T. P., and EMMS, S. June 3, 1936, No. 15475. [Class 20 (ii)] A scaffold clamp comprises a U-shaped saddle-member c adapted to embrace a scaffold member a and provided with hooked extensions d which pass under and support a scaffold member b disposed at rightangles to the former scaffold member, a clamping member being provided to engage these hooked extensions and bear upon the first scaffold member a. The hooked extensions may be of sufficient length to pass over the scaffold member a and are provided with a bridge-piece h carrying a clamping screw or, alternatively, the clamping member may engage the scaffold member a and be provided with engaging portions for the ends of the extensions of the saddle-member.
Patent GB-1178151-A (GB)
Title: Grid Wire for Electron Tubes
IPC: H01B1/02
Filed: 1967-04-04
Abstract: 1,178,151. Making grid wires. ENGELHARD MINERALS & CHEMICALS CORP. 4 April, 1967 [6 Dec., 1966], No. 15478/67. Heading B3A. [Also in Divisions C7 and H1] An emission inhibiting grid wire for electron tubes comprises a core in the form of a mass of interfused wires having a fibrous grain structure of an alloy of 48% to 52% Mo and 52% to 48% Re coated with Ti. The wire is formed by inserting about 200 alloy wires into a Ti tube, cold swaging then alternately annealing in vacuum and cold drawing. Reference has been directed by the Comptroller to Specification 816,135.
Patent GB-273477-A (GB)
Title: Improvements in the colouring of cement, concrete and the like
IPC: C04B16/00
Filed: 1926-06-19
Abstract: 273,477. British Dyestuffs Corporation, Ltd., Baddiley, J., Shepherdson, A., and Davidson, A. June 19, 1926. Colouring concretes &c. - Cement, concrete, plaster, &c. are coloured by the addition of vat dyes in a highly dispersed form before, during, or after the gauging process. Preferably the dyestuff in the form of paste or of readily dispersable powder is added to the gauging water. Examples are given of the use of thioindigo Red B, Bromindigo 4B, Duranthrene golden orange Y, and Duranthrene claret. Specification 277,389 is referred to.
Patent GB-770254-A (GB)
Title: Improvements in increasing the particle size of synthetic rubber latices
IPC: C08C1/065
Filed: 1955-05-31
Abstract: The particle size of synthetic rubber latices is increased by preparing an alkaline synthetic rubber latex having a pH above 9, and containing 3 to 10 parts per 100 of rubber of alkali-metal soap of a monocarboxylic acid having 10-20 carbon atoms, and containing a volatile base salt of an acid, other than such soap-forming acid, having an ionisation constant greater than 1 X 10-5 and which is more soluble in water than the soap acid and which is not volatilized from aqueous solution on distillation of the volatile base from an aqueous solution of the volatile base salt, the volatile base salt being present in amounts to react with 2/10 to 7/10 of the soap on removal of the volatile base, distilling off the volatile base, whereby the acid of this salt is liberated and reacts with part of the soap present so as to reduce the pH of the latex without coagulation, heating for at least one hour at 40-110 DEG  C. and adding alkali to the latex to raise the pH at least one unit and produce a pH above 9. The latex may be heated until its solid content has increased at least 5 per cent or until the optical density per gram of rubber per litre of water is increased at least 25 per cent.  Specified synthetic rubbers are the polymers of butadiene, isoprene, chloroprene, cyanobutadiene, 2-phenyl butadiene, piperylene and 2.3-dimethyl butadiene or copolymers thereof with styrene, vinyl naphthylene, alpha-methyl styrene, p-chloro-styrene, dichlorostyrene, alpha-methyl dichlorostyrene, acrylic acid, methyl acrylate and methacrylate, acrylonitrile, methacrylonitrile, methacrylamide, methyl vinyl ether or ketone, vinylidene chloride, alpha, beta and gamma vinyl pyridines, 5 - ethyl - 2 - vinyl pyridine, 2 - methyl - 5-vinyl pyridine and vinyl carbazole.  Specified soap-forming acids are capric, undecenoic, lauric, myristic, palmitic, margaric, stearic, oleic, linoleic, arachidic acids, and rosin acids including abietic and hydrogenated, dehydrogenated, disproportionated and polymerized abietic acids.  The volatile base salts may be derived from ammonia, methyl, ethyl, dimethyl, diethyl, triethyl, propyl, dipropyl, isopropyl, di-isopropyl, butyl, amyl, hexyl and cyclohexyl amines; piperidine, 1-methyl-piperidine, 2-, 3- or 4-pipecoline, morpholine, methyl ethylamine, methyl propylamine, methyl butyl amine and methyl diethylamine.  Specified other acids are benzoic, bromic, bromopropionic, butyric, chloric, citric, fumaric, hydrochloric, malic, naphthoic, oxalic, succinic, sulphanilic valeric and many others.  The alkali metal soap may also contain a volatile base chloride, e.g. ammonium chloride.
Patent GB-452533-A (GB)
Title: Improvements in or relating to cigarette cases
IPC: A24F15/20
Filed: 1935-05-29
Abstract: 452,533. Cigarette cases. SHANKS & CO., Ltd., D., 12, Denmark Street, and SCORER, R. I., 9, Chantry Road, Moseley, both in Birmingham. May 29, 1935, No. 15584. [Class 18] In a cigarette case of the kind in which the cigarettes are individually supported upon a row of springs f upstanding from a common plate e within the bottom of the case, the cigarettes being successively raised or ejected from the case on opening the lid, the row of springs f is attached to the common foundation plate e which may have scalloped edges by slipping the lower terminal coils thereof over one side of the plate. The end or ends f of each spring f may be more closely coiled to reinforce the attachment to the plate. The springs and plate may be assembled on a jig and then inserted into the case. Specification 438,381 is referred to. The Provisional Specification indicates, also, the attachment of the springs to the plate by means of hooked tongues pressed therefrom.
Patent GB-366396-A (GB)
Title: Needle-clamp for sewing machines
IPC: D05B55/02
Filed: 1931-05-28
Abstract: 366,396. Sewing-machines. FAIRWEATHER, W., 65, Chancery Lane, London.-(Singer Manufacturing Co. ; Elizabeth, New Jersey, U.S.A.) May 28, 1931, No. 15600. [Class 112.] Needle-holders.-The slabbed side 6 of a standard sewing-machine needle shank 5 is clamped against a seat 3 formed in he recessed end of a needle bar 2 by a clamping band 8, which embraces the needle bar and carries a clamping screw 9 engaging a gib 12 seated in opposed recesses in the clamping band and needle bar. A stop 7 locates the needle in correct longitudinal position. A standard sewing-machine needle may thus be clamped in a position reverse from the usual position to engage a loop taker having a beak passing to the left of the needle without disturbing the usual position of the needle clamping screw, or the clearance between the loop taker and needle blade for different sizes of needles.
Patent GB-1183045-A (GB)
Title: Improvements in or relating to Bearings
Inventor: NEW NIGEL HENRY
IPC: F16C17/02
Filed: 1966-04-07
Abstract: 1,183,045. Bearings. GLACIER METAL CO. Ltd. 7 April, 1967 [7 April, 1966], No. 15600/66. Heading F2A. A plain bearing comprises bearing elements 1, 2, 3 in different circumferential positions, the elements being resilient and thus radially and circumferentially flexible. Each element has a part-cylindrical portion supported by end limbs 4-9 located in recesses in housing 14. A clearance between the radially inner ends of adjacent limbs facilitates circumferential flexing. Cavities 18-20 in the housing contain damping fluid which may be a lubricant fed to the bearing surfaces via apertures in the elements. The elements may form a generally elliptical bearing surface or have steps to provide hydrodynamic action. The bearing surfaces are of bronze, alloys of Cu-Pb, Be-Cu, Al-Cu, Al-Sn, Al-Pb, or PTFE. The element may have a steel backing.
Patent GB-973235-A (GB)
Title: Mobile batching plant
IPC: B28C7/04
Filed: 1962-04-25
Abstract: 973,235. Tank vehicles. R. E. HELTZEL. April 25, 1962 [May 2, 1961; April 5, 1962], No. 16716/62. Heading B7B. [Also in Divisions B1, B8 and G1] In a mobile batching plant aggregate is transported in a storage bin 20 having three separate compartments 21, 22, 23 mounted on a frame 24 having a rear supporting wheel assembly 25 and provided at its forward end with a fifth wheel or other detachable connection 26 to a truck tractor 27.
Patent GB-593075-A (GB)
Title: Improvements in or relating to the driving gear of half track vehicles
IPC: B62M27/02
Filed: 1944-08-17
Abstract: 593,075. Motor vehicles. WILLYS-OVERLAND MOTORS, Inc. Aug. 17, 1944, No. 15744. Convention date, Sept. 17, 1943. [Classes 79 (i), 79 (iii), and 79 (iv)] [Also in Group XXXII] A half-track vehicle which has spring supported beams at opposite sides of the frame which carry idler wheels and which are articulately interconnected, and an endless track embracing the driving wheels and the idler wheels. The articulated connection between the beams preferably comprises a pair of parallel links transverse to the frame, their ends being pivoted on the beams, and one of the beams is preferably connected to the frame by a pair of stabilising transverse links. Means may be provided for adjusting the downward pressure of the idler wheels on to the ground. Extending transversely of the frame members 10, 11, Figs. 2 and 3, is a rigid tubular member 35 to whose ends are secured brackets '39 to which the springs 47 and 52 are articulated. The rear ends of the springs are secured to the normal rear axle casing 56, which is located by the distance rod 61, and the forward ends are articulated to brackets 63 to each of which is pivoted a beam 65 carrying two idler wheels 68, 74, the driving wheel 60 and idler wheels 68, 74 being embraced by an endless track. The wheel 74 is movable longitudinally of the beam 65 to adjust the tension in the endless track. The two brackets 63 are articulately connected by a pair of parallel links 95, 96, see Fig. 4, which is a section on line IV-IV of Fig. 2, and by a link 107, Figs. 3 and 5. One of the beams 65 is connected to the chassis frame by a pair of links 101, 102; see Fig. 5, which is in a section on a' line V-V of Fig. 2. For varying the downward thrust of the idler wheels, a handle 136 is turned which moves the nut 126 and arm 124, rotates the rod 116 and levers 118 and raises or lowers the links 111 attached to the brackets 63 and beams 65. A suitable endless track comprises cleats 81 having flanged openings 86 and tyre engaging brackets 79, the cleats being linked together by chain links 85. The tyre engaging brackets 79 are adapted to co-operate with projections 91 on the tyre. The endless track is stated to be suitable for use on ice or snow, and for such use the steering wheels of the vehicle may be mounted on skids.
Patent GB-591900-A (GB)
Title: Electronic-optical micro-chronometer
IPC: G04F13/02
Filed: 1944-08-17
Abstract: 591,900. Cathode-ray oscillographs. GES. ZUR FORDERUNG DER FORSCHUNG AUF DEM GEBIETE DER TECHNISCHEN PHYSIK AN DER EIDGENOSSISCHEN TECHNISCHEN HOCHSCHULE. Aug. 17, 1944, No. 15777. Convention date, Feb. 13, 1943. [Class 37] Apparatus for measuring short time intervals between electrical impulses comprises two or more cathode-ray tubes, the rays of which are rotated at different angular velocities, the chronological order of the various impulses being indicated electrically. The number of complete revolutions made by the ray having the greatest angular velocity may thus be determined by the reading of the second tube. The tubes A, B are shown having deflecting electrodes 7, 8 connected to a bridge 10 so that they receive voltages in quadrature which produce circular deflection of the ray. The bridges 10 are fed from amplifiers 11 connected to a quartz or tuning fork oscillator 12 which is arranged to supply the amplifiers 11 with different frequencies, for example the upper amplifier 11 with 10,000 cycles per second and the lower with 1000 cycles per second. The impulses are applied through an amplifier 15 to the control grids of the tubes A, B so as to cancel the normal blocking of the cathode-rays and produce short luminous arcs. These are arranged to fall on circles of different diameters to enable their chronological order to be distinguished. This is effected by after acceleration electrodes 18 fed with a high positive voltage from a feeding and control appliance 19. The diameter of the circle described by the cathode-ray is made larger or smaller by the apparatus 19 changing the after acceleration voltage during the interval between consecutive impulses. The ray deflection may be modified by controlling the anode voltage.
Patent GB-597698-A (GB)
Title: Improvements in or relating to wireless aerial systems
IPC: H01Q19/06
Filed: 1945-06-20
Abstract: 597,698. Aerials. HARVIE, R. B. ROBERTSON-SHERSBY-, and GARFITT, R. G. June 20, 1945, No. 15791. [Class 40 (v)] A wireless aerial system which provides an asymmetrical radiation /reception characteristic comprises a wave-guide or reflecting mirror wherein the wave paths in or out of the mirror are divided into a number of zones, in one of which a dielectric member is placed, the member being so shaped and positioned that the wave paths through the member are displaced angularly to produce the desired asymmetrical characteristic. A prism 16, Fig. 3, of dielectric material is placed in the mouth of a wave-guide horn 15. The direction of the main beam, which is narrow and of large amplitude, is shown at a while the direction of the smaller and broader refracted. beam is shown at b, thus producing the resultant radiation /reception characteristic shown in Fig. 1. To improve the directivity of the main beam, an additional lens 17 which may be formed integrally with the prism may be incorporated into the guide. In the application of the invention to a reflecting mirror system, Fig. 5, the prism 21 is situated as shown. Internal reflection from the surface 21a of the prism may be used to obtain additional effects.
Patent GB-1420903-A (GB)
Title: Process for the preparation of compounds which contain  hydantoin rings
IPC: C07D233/78
Filed: 1974-04-10
Abstract: 1420903 Hydantoin derivatives; amides BAYER AG 10 April 1974 [11 April 1973] 15873/74 Heading C2C [Also in Division C3] Compounds containing hydantoin or thiohydantoin groups are obtained by reacting compounds containing at least one isocyanate or isothiocyanate group at 50‹ to 350‹ C. with compounds which contain at least one α-halocarboxylic acid amide group or one α,α<SP>1</SP>-dihalodicarboxylic acid diamide group or a derivative thereof. The isocyanates may be used partly or completely in the form of masked isocyanates which are obtained by reacting the free isocyanates with compounds containing reactive hydrogen. The reaction may be carried out in a solvent, e.g. an optionally substituted aliphatic or aromatic hydrocarbon solvent or a phenolic solvent. The compounds, some of which are novel, may be polyhydantoins containing recurrent structural units of the Formula V or VII: or they may be compounds of the Formula XII, XIII, XIV, XV, XVI, XVII, XVIII or XIX: wherein R<SP>3</SP> is an optionally substituted C 1-20  aliphatic or C 5-12  aromatic radical or a C 5-12  cycloaliphatic or C 6-20  aliphatic aromatic radical or an aromatic or cycloaliphatic heterocyclic radical containing from 5 to 12 ring atoms which contains or is substituted by one or more heteroatoms, R<SP>4</SP> is a hydrogen atom or an optionally substituted C 5-10  aromatic, C 1-20  aliphatic or C 5-10  cycloaliphatic radical or two R<SP>4</SP>s complete a C 5-7  cycloaliphatic ring, R<SP>5</SP> represents an optionally substituted C 1-20  aliphatic or C 5-12  aromatic radical or a C 6-20  aliphatic aromatic or C 5-12  cycloaliphatic radical or an aromatic or cycloaliphatic heterocyclic radical which contains or is substituted by one or more heteroatoms, A is a C 1-10  aliphatic, C 5-10  cycloaliphatic, C 6-12  cycloaliphatic or C 5-12  aromatic radical, o is from 2 to 200, and R<SP>6</SP> is a single bond or a C 1-10  aliphatic, C 5-10  cycloaliphatic, C 6-10  aliphatic aromatic or C 5-10  aromatic radical. α-Chloroacetanilide is prepared by reacting chloroacetyl chloride with aniline in tetrahydrofuran. 1,6 - bis - α - Chloroacetamidohexane, 1,3 - bis - α - chloroacetamidobenzene, 4,4<SP>1</SP>- bis - α - chloroacetamidodiphenylmethane and 4,4<SP>1</SP> - bis - α - chloroacetamido - diphenyl ether may be prepared similarly.