baber/WOPTO huggingface dataset:
Patent GB-381573-A (GB)
Title: Improvements in or relating to television systems and cathode ray tubes suitable foruse therein
IPC: H01J31/28
Filed: 1931-07-04
Abstract: 381,573. Cathode-ray tubes. MARCONI'S WIRELESS TELEGRAPH CO., Ltd., Marconi House, Strand, DOWSETT, H. M., 47, Drayton Gardens, Winchmore Hill, both in London, and CADZOW, R., Ardentinny, Argyllshire. July 4, 1931, No. 19340. [Classes 39 (i) and 40 (iii).] In a cathode-ray tube for use in television, the ray is controlled by a transverse electron stream produced between a photo-electric cathode, arranged on one side of the rav so as not to be struck by it, and an anode arranged on the other side of the ray. As shown, the photo-electric cathode C and an anode A, consisting of a gauze or pair of wires, are arranged on each side of the ray passing from a cathode G to an anode P ; an auxiliary anode E is mounted near the photo-electric cathode C. Deflecting plates D and windings F for preventing deflection of the ray to the electrodes A, E are provided. The anode is biased bv a battery X negatively with respect to the cathode G. The output circuit is connected through a condenser OC across a resistance R. Light from a lamp L is projected through a film S on to the photo-electric cathode. In a modification, a part of the ray is deflected to the anode A by the transverse stream. In another arrangement the light is reflected bv a polygonal mirror through a slit in a diaphragm.
Patent GB-1499767-A (GB)
Title: Manufacture of derivatives of malondialdehyde
IPC: C07D239/42
Filed: 1975-05-08
Abstract: 1499767 Malondialdehyde derivatives BASF AG 8 May 1975 [20 May 1974] 19371/75 Heading C2C Malondialdehyde derivatives of general formula wherein R<SP>1</SP> is alkyl, R<SP>2</SP> is H, alkyl or alkoxy; and R<SP>3</SP> and R<SP>4</SP> are each alkyl or, together with the N-atom to which they are attached, form a heterocyclic ring, are prepared by simultaneously reacting COCl 2  with a dialkylformamide of general formula and an enol ether of general formula The reaction is preferably conducted in a continuous manner, at least 50% of the conversion being achieved in a reaction space permitting controllable back-mixing, and the remainder with no back-mixing. Complete absence of solvents is desirable and a reaction temperature of 40-100 C. is used. Suitable enol ethers are isobutyl vinyl ether, vinyl methyl ether, 1,2-dimethoxyethylene and propenyl ethyl ether. In the examples vinyl isobutyl ether and dimethylformamide are reacted with COCl 2  to give a product where R 1  = isobutyl, R 2  = H, R<SP>3</SP> = R<SP>4</SP> = CH 3 . 2-Aminopyrimidine is prepared by reacting the above product with guanidine.
Patent GB-173794-A (GB)
Title: Improvements in glass-furnaces
IPC: C03B7/04
Filed: 1920-07-08
Abstract: 173,794. Moorshead, T. C. March 3, 1917, [Convention date]. Glass furnaces.-In a glass furnace having a refining chamber 3 in communication with a melting chamber 1, the refining chamber is surrounded by a rotary annular delivery trough 6, which is exposed at one point to allow access of the gathering machines.
Patent GB-633661-A (GB)
Title: Improvements in or relating to reciprocating pumps
IPC: F04B7/04
Filed: 1947-07-21
Abstract: 633,661. Cylinders. GIUSTI, T., GIUSTI, R. B., and GIUSTI & SON, Ltd., T. July 21, 1947, No. 19461. [Class 122(i)] [Also in Group XXVIII] In a reciprocating pump comprising a body 1 having a through passage 2 for a piston 3 enlarged at the upper part thereof into a subsidiary chamber 5, in which a removable cylinder 7 is disposed, the body 1 is formed with a slot 17 to allow passage of an inlet connection 16 on the cylinder 7 and so facilitate removal of the latter from the pump body 1. The cylinder 7 is sealed at one end by a washer 8 and at its other end by a valve seat 9.
Patent GB-245373-A (GB)
Title: Improvements in percussion drill bits for drilling wells and the like
IPC: E21B10/36
Filed: 1925-07-31
Abstract: 245,373. Cuthill, J., and Oil Well Engineering Co., Ltd. July 31, 1925. Borehole apparatus. -A percussion ropeboring bit for drilling wells &c. is provided with two or more flutes b and is twisted throughout the length of the fluted part to assist in imparting a twisting action to the bit The cutting edge may be V-shaped, Fig. 2, or oppositely bevelled on opposite sides of the axis of the bit, Fig. 5.
Patent GB-302876-A (GB)
Title: Improvements in sandbags employed as core-devices in vulcanizing automobile tyres
IPC: B29C33/76
Filed: 1928-07-06
Abstract: 302,876. Dodge, N. S. July 6, 1928. Sacks and like bags.- A sandbag for use as a core in vulcanizing automobile tyres comprises an elongated tubular fabric bag in which the warp threads run longitudinally of the bag and increase in diameter from the inner to the outer surface, the threads being comparatively fine at the inner surface and comparatively coarse at the outer one. The bag is woven in a form approximately to a semicircle when viewed from the side and the warp threads are arranged in three sections, an inner one A where the warp thread 2 is comparatively fine. an intermediate one B consisting of a coarser thread 3, and an outer one C where the thread 4 is coarser still. The bag is oval or circular in cross section.
Patent GB-425946-A (GB)
Title: Improvements relating to copper oxide rectifiers
IPC: H01L21/16
Filed: 1934-07-04
Abstract: 425,946. Static contact rectifiers. WESTINGHOUSE BRAKE & SAXBY SIGNAL CO., Ltd., 82, York Road, King's Cross, London.-(Assignees of Dowling, P. H. ; 628, Cascade Road, Forest Hills, Pennsylvania, U.S.A.) July 4, 1934, No. 19722. Convention date, Sept. 19, 1933. [Class 37] A copper - oxide rectifier comprises plates or discs of copper dished or bowed to be of curved cross-sectional form. During the oxidizing process the plates are mounted with their convex surfaces in contact. By this arrangement a thick uniform layer of oxide is formed on the concave sides ; that in the convex side is thinner and non-uniform so that on subsequent treatment with nitric acid &c., the oxide layer is removed therefrom. The plates may be dished in all directions or in one direction only or may be of toroidal form as shown, in each case having a central hole 3 for the passage of the mounting rod.
Patent GB-186471-A (GB)
Title: Improvements in or relating to folding or extension tables
IPC: A47B1/02
Filed: 1921-07-22
Abstract: 186,471. Wipf, J. July 22, 1921. Addition to 142,540. Telescopic and expanding tables. -In an expanding table of the kind described in the parent Specification, folding top sections a, b adapted to be raised by spring action into position for use between sliding end sectors, are mounted on journals or hinges d so as to be free to slide and turn on their supporting-rods e; the journals d of the folded levers act as stops to position the open sections centrally. Fig. 3 shows the operating-mechanism in sectional side elevation. The driving-lever i mounted on the rod e is formed with a chain wheel j around which passes a chain k to which is attached a spring l or a weight, or a hydraulic, pneumatic, or electric operation-device. When a spring is used, the tension may be adjusted by means of a screw m and lock-nut e. The lever i has a cam-shaped end q normally engaged y a recess r, Fig. 10, in a swing- ing catch s provided with a spur a<1> adapted to be engaged by a trip member mounted on an end section of the table. When it is desired to extend the table, one end section is pulled out until the catch s swings into the position shown in Fig. 11 and releases the lever i which swings round under the influence of the spring l carrying with it a striker bar g mounted on the folded section b until the position shown in Fig. 8 is reached. The lever i is then arrested by a weighted lever x, but as the levers a, b continue to open under the action of their own weight and momentum, the arm g eventually strikes a projection y on the lever x and checks the movement of the lever i. To close the table, the whole top is. first slid to one end, and the end sections are then moved outwards to disengage their dowels from the folding section and to release the spur a<1> from the catch b<1>. The catch s then swings to a vertical position. Flexible guides g<1> on a centre rail f force the section to be folded endways until the dowels are clear of the rail f, whereupon the section can be folded by hand, the lever i being forced back against the action of its springs &c. until the cam q engages the cam surface t of the catch s and displaces it and finally falls into the latched position shown in Fig. 10.
Patent GB-826829-A (GB)
Title: Improvements in and relating to organometallic catalysts
IPC: C08F10/00
Filed: 1958-06-20
Abstract: A polymerization catalyst prepared by admixture of a Group IV-VI transition compound with an organo-Al compound is activated by means of an organo-Al compound (the same as, or different from, that used in the preparation) in presence of an inert liquid hydrocarbon. Components specified are Al triethyl, triisobutyl, tri-n-heptyl and triphenyl; the ethyl dichloride, diethylmonobromide and diisobutyl hydride and chloride of Al; compounds in which Al is combined with an alkali metal such as LiAl tetra-n-decyl and Ti tetrahalides. Solvents mentioned are pentane, heptane, cyclohexane, benzene and toluene, as examples of aliphatic, cycloaliphatic and aromatic hydrocarbons.  The process is preferably effected in absence of oxygen, moisture and hydroxylcontaining compounds.ALSO:Ethylene, propylene, butene-1 and higher linear or branched a -olefins, as well as conjugated and unconjugated dienes are polymerized by means of a co-ordination catalyst which has been activated by contact with organo-Al compound in presence of inert liquid hydrocarbon such as activated aliphatic, cycloaliphatic and aromatic hydrocarbons, e.g. pentane, heptane, cyclohexane, benzene and toluene; the latter solvents may also be used in polymerization.  Preferred polymerization conditions for ethylene are 25-250 DEG  C. and 1-200 atm.
Patent GB-139410-A (GB)
Title: Improvements relating to the opening of hermetically sealed tins
IPC: B65D43/16
Filed: 1919-08-12
Abstract: 139,410. Coaker, F. F. Aug. 12, 1919. Lids.-A square slip-on lid of an hermetically sealed tin is provided with two pointed cutters, and one flange of the lid is hinged, as shown. On raising the hinged flange and sliding the cutters slightly inwards to puncture the top of the tin, the lid may be slid across the tin in two directions at right-angles, to cut out the sealed top. The hinged flange is provided with small flaps at either end, which are secured to the adjoining flanges by hollows and protuberances when the lid is to serve as an ordinary cover.
Patent GB-1148715-A (GB)
Title: Permanent mould for use in the centrifugal casting of metal bodies and method of producing such mould
Inventor: WILLANGHAM HAROLD E
IPC: B22D13/10
Filed: 1966-05-04
Abstract: 1,148,715. Centrifugal casting-machines; making moulds; blasting. H. E. WILLING- HAM. 4 May, 1966 [4 May, 1965], No. 19787/66. Headings B3A, B3D and B3F. A permanent mould for casting metal bodies, e.g. a centrifugal casting mould for casting pipes, has its inside casting surface electroplated, e.g. chromium plated. Before plating the casting surface is sand blasted with an abrasive grit, e.g. aluminium oxide particles, to produce a matt finish, which finish may be present on the finished plated surface to reduce friction when a pipe is extracted from the mould. A mould release agent comprising an aqueous solution of diatomaceous earth is applied to the mould before each casting operation. The release agent is applied to a rotatably mounted centrifugal casting mould by a spray head on the end of a boom that is fed into the mould. The mould has a slight taper to facilitate extraction. The molten metal is poured into the mould via a pivotable " boat " having a spout extending into the mould and which receives the correct amount of molten metal for a cast pipe from a transportable ladle.
Patent GB-359380-A (GB)
Title: Improvements in and relating to electrical temperaturemeasuring instruments
IPC: G01K7/18
Filed: 1931-03-25
Abstract: 359,380. Resistance thermometers. CAMBRIDGE INSTRUMENT CO., Ltd., ORCHARD, J. L., and SUTTON, C. D., Chesterton Road, Cambridge. March 25, 1931, No. 19985/30. Drawings to Specification. [Class 97 (iii).] A resistance thermometer comprises insulated resistance wire encased in metallic tubing of fine bore and formed as a compact cylindrical or conical helix or as a flat spiral. A helix of resistance wire may itself be coiled into a ring and mounted on a terminal block. For an immersion thermometer a short cylindrical helix of resistance wire may be supported at the end of a light tubular holder. Light radial vanes or a cylindrical shield may protect the resistance element. The application to wet and dry bulb thermometers is referred to.
Patent GB-655775-A (GB)
Title: Improvements in or relating to supersonic apparatus for determining the thickness ofan object
IPC: G01B17/02
Filed: 1948-07-28
Abstract: 655,775. Supersonic inspection devices. SPERRY PRODUCTS, Inc. July 28, 1948, No. 20121. Convention date, Sept. 11, 1947. [Class 118 (ii)] Apparatus for testing the thickness of an object comprises a plurality of supersonic oscillators, oscillations from which are applied in succession to the object under test and means for indicating the amplitudes of the oscillations produced therein. The amplitudes of the oscillations indicate the degree of resonance of the object to the oscillations applied thereto, whereby an estimate of the dimensions of the object may be made. Oscillations of frequencies F1, F2, F3 from oscillators 11, 12, 13 are applied in succession through switch arm 15 to piezo-electric transducer 20 to excite oscillations in the work-piece 10. The oscillations are also applied to an amplifier 25, the output of which is applied to the vertical-deflecting plates of cathode-ray tube 30. Switch arm 15 is rotated continuously by motor 40 to connect with sweep circuit 33 and oscillators 11, 12 and 13 in succession. The connection with circuit 33 initiates a time-base sweep which is applied to the horizontal-deflecting plates of cathoderay tube 30 so that the signals due to the three oscillations are displayed in succession as vertical deflections of a horizontal trace. Frequency F2 is made equal to the resonant frequency of a work-piece of the desired thickness, while frequencies F1 and F3 are made to correspond to lower and upper limits of thickness so that the pattern formed on the screen of the cathode-ray tube indicates whether or not the object is of the desired thickness, and if not, gives an indication of the amount and direction of the variation from the desired thickness. If indication of variation in one direction only is desired only two frequencies need be employed. In an alternate embodiment, Fig. 4 (not shown), the output of amplifier 25 is switched, in synchronism with the switching of the oscillators, to three magic-eye tuning indicators to indicate the amplitudes of the successive outputs. The tuning indicators may all be arranged within a single tube so that all three indications are produced on the one screen.
Patent GB-496417-A (GB)
Title: Improvements in, or relating to, contact member for use in automatic circuit breakers and other electrical switchgear
IPC: H01H1/20
Filed: 1937-07-21
Abstract: 496,417. Switch contacts. CRABTREE & CO., Ltd., J. A., McLOUGHLIN, H. F., and HARRISON, B. G. July 21, 1937, Nos. 20158/37 and 13643/38. [Class 38 (v)] A switch contact comprises two plates a, b formed with contact surfaces al, b<1> and biassed apart by springs d, movement being limited by the ends of a stud f. The two plates are mounted in a cylindrical holder, not shown, the ends of which engage shoulders a<2>, b<2> and prevent lateral movement of the contact plates. The contact plates may be reversed in the holder so that either plate may serve as the contact. Specifications 417,567 and 493,957 are referred to.
Patent GB-1046309-A (GB)
Title: Improvements in and relating to electric shavers
IPC: B26B19/38
Filed: 1965-05-13
Abstract: 1,046,309. Charging and discharging batteries; two-part couplings. R. HIRSCHMANN. May 13, 1965 [May 19, 1964], No. 20262/65. Headings H2E and H2H. A battery electric shaver is provided with a locking removable slide 13 which may be exchanged for another slide having pins constructed to a different standard. A spare slide 37 may be clipped into a protective hood 33. The battery and associated rectifier 6 are mounted in a housing 2 separable from the head 1 which carries the motor 4. The pins are riveted or pinned through the slide 13 to form contacts 18, 19 which engage with depressions in leaf-springs 20, 21.
Patent GB-1512470-A (GB)
Title: Heating of liquids
IPC: F24H1/18
Filed: 1976-05-17
Abstract: 1512470 Liquid heaters COMPAGNIE INTERNATIONALE DE MINERALLURGIE 17 May 1976 20278/76 Heading F4A A liquid heater comprises a tank provided with an electric resistance heating element and includes a glass or ceramic member which separates the element from the interior of the tank. In the embodiment shown a tank 1 is provided with glass member 2 forming a bottom and which carries a heating element 6. A plate 5 urges a heat insulating filling 4 against the member 2. Heating of the element 6 causes secondary currents to be generated in the glass and these can be used to turn off the element if the temperature becomes too high. Alternatively an electrically insulating layer can be arranged between the element and the glass to prevent the production of such currents. In a further embodiment, for use with an element of a higher operating temperature, (Fig. 2, not shown) the element is arranged on an electric insulator and is spaced from the member 2 to enable heat to be transmitted by both conduction and radiation.
Patent GB-958626-A (GB)
Title: Pyrazine derivatives
IPC: C07D513/04
Filed: 1962-05-28
Abstract: The invention comprises the process substantially as set out in the following reaction scheme, and compound IX when so prepared: <FORM:0958626/C2/1>  Pharmaceutical compositions are mentioned comprising 5-methoxy-2-sulphanilamido-pyrazine (IX) with a therapeutically acceptable carrier. Tablets, powders, pills and syrups (oral), solutions (injectable) and suppositories (rectal) are referred to. The compound is antibacterial.  Specification 928,152 is referred to.
Patent GB-148512-A (GB)
Title: Improvements relating to decompression cocks for combustion engines and the like
IPC: F01L13/08
Filed: 1920-07-10
Abstract: 148,512. Colin, R. Feb. 27, 1919, [Convention date]. Starting. - A decompression valve comprises a screw-down plug l and two balls j, k, so that the ball will engage its seat i properly even if the plug l is a little out of line with the seat. A groove is cut in the side of the plug, and the plug is held in position by a pin e engaging a rack f on the valve body.
Patent GB-381969-A (GB)
Title: Improvements in or relating to friction transmission
IPC: F16H61/664
Filed: 1931-07-17
Abstract: 381,969. Variable-speed friction gearing. HAYES, F. A., Middletown, New Jersey, U.S.A. July 17, 1931, No. 20528. Convention date, July 18, 1930. [Class 80 (ii).] In friction gearing comprising torus discs 1, 2 connected by rollers 11 which are tilted to vary the speed ratio, the torus surfaces are arranged or modified so as to increase the frictional engaging pressure at low speeds of the driven member. The driving disc 1 is fast on a driving-shaft 3 which carries abutments for springs 4 pressing the friction train into engagement. When the rollers 11 are non- planetary, the disc 2 is the driven member, but the rollers may be planetary. When the rollers 11 are tilted from the high-speed position shown in full lines to the low-speed position shown in chain lines, the discs 1, 2 are thrust farther apart so that the inward thrust of the springs 4 is increased. This effect is produced by a relative offsetting of the toric races. The centre a of the race 13 on the disc 1 is farther from the gear axis than is the centre c of a race 12 on the disc 2. The centre o of the roller is between the centres a, c. Incidentally the life of the roller is increased since the discs wear it on two different tracks. If b, d are the centres of curvature of the sections of the roller surfaces, then the roller touches the disc 1 at a point b<1> in a line a, b, and the disc 2 at a point d<1> in a line c, d. These touching points are on separate tracks each at a distance H from the middle circle of the roller surface.
Patent GB-776109-A (GB)
Title: Modulation systems with means for reducing distortion introduced by amplifiers
IPC: H03C1/06
Filed: 1955-07-15
Abstract: 776,109. Multiplex radio signalling; modulating systems. STANDARD TELEPHONES & CABLES, Ltd. July 15, 1955 [July 19, 1954], No. 20529/55. Class 40(5) Different carrier frequencies from oscillators 3, 4, each employed e.g. for frequency shift radio telegraphy, are simultaneously amplified in an amplifier 5 and successively transposed up in frequency by oscillators 7, 8 and balanced modulators 6, 10 having upper sideband selection before radiation from an antenna 12. Further, the intermodulation beat between the carriers is detected from the antenna circuit by a half-wave rectifier 16 and retroactively applied through an attenuator 18 and phase adjuster 21, 22 to amplitude modulate the amplifier 5, the oscillator 8 or an amplifier 9 amplifying the output of oscillator 8 or any combination of them so that distortion due to non-linearity of the amplifier or modulators is reduced. Increased efficiency of the final amplifier 11. also results since it may be biased beyond the point of minimum distortion, the feedback cancelling out any additional distorton.
Patent GB-813742-A (GB)
Title: Improvements in and relating to stockings
IPC: D04B1/26
Filed: 1955-07-15
Abstract: 813,742. Knitted stockings; finishing fabrics. PATENTEX Inc. July 15, 1955 [March 18, 1955], No. 20621/55. Classes 42 (1) and 74 (2). A stocking is knitted in alternate courses, or groups of courses, of " S " twisted and "Z" twisted " lively " yarns, each in company with an untwisted " un-lively " yarn, both yarns of each pair being knitted together by the same needles. The stocking is then steamed for about one hour at about 210‹ F., dried for about fifteen minutes at about 170‹ F., dyed for about thirty minutes at about 210‹ F., and finally maintained, in relaxed condition, for about fifteen seconds at from 250‹ to 255‹ F. Liveliness is thus imparted to the originally untwisted yarn and elasticity to the stocking. The untwisted yarn may be of 10 denier monofilament nylon. The lively yarn may be of 15 denier nylon, twisted in one direction (e.g. 20 to 50 turns per inch), heat set, and then reverse twisted (e.g. 20 to 60 turns per inch). Specification 803,584 is referred to.