baber/WOPTO huggingface dataset:
Patent GB-651446-A (GB)
Title: Improvements in endless tracks for track laying vehicles
Inventor: ODDY CLIFFORD GRAYSON
IPC: B62D55/205
Filed: 1948-10-07
Abstract: 651,446. Hinges. VICKERS-ARMSTRONGS, Ltd. Oct. 7, 1948, No, 26162. [Class 65(ii)] [Also in Group XXXI] Relates to a joint in vehicular endless track (see Group XXXI), having the bearing surfaces of a link connecting bolt hermetically sealed against the entry of dirt, &c. by axially compressed sealing rings. The sealing rings for each joint are pressed axially against lateral faces of one of the links by the compression action of a nut on one end of the bolt, the compression action being applied through axially movable metallic bushes surrounding the bolt and located in bores in jaws on the other link, and additional sealing rings are located at the outer ends of the bores and are similarly compressed by the nut. As shown each link 1 is formed with a boss 2 at one end and the jaws 3, 4, at the other, the boss of one link fitting between the jaws.of the adjacent links and interconnected by the bolt 6. On the bolt 6 at each side of the boss 2 is mounted one rubber sealing ring. Each ring has a flange 7<1> of the same diameter as the bore 5 in each. jaw and is sandwiched between the boss 2 and the axially movable bush 10. The assembly is held in position by the head 6<1> of the bolt, rotation of the head being prevented by a flat 6a on the head mating with a lug 12 on the jaw 4, and at the other end of the bolt a stout washer 9 having a boss like part 9<1> engaging in the bore of the jaw 3, the washer being held in position by the nut 8. Entry of dirt, &c. behind the head 6<1> or the washer 9 is prevented by the additional sealing ring 13 which may be formed of rubber, soft metal or other suitable material. A seal is provided between the bolt 6 and the washer 9 by a short taper 6b on the bolt and a mating taper on the inner diameter of the washer.
Patent GB-955222-A (GB)
Title: Screw machine feed gripper
IPC: B23B31/00
Filed: 1962-07-09
Abstract: 955,222. Machine-tool details. A. O. PIEPER. July 9, 1962 [July 10, 1961], No. 26181/62. Heading B3B. A bar-feed gripper comprises a pair of ceramic gripping elements 1 interlocked with semicylindrical holders 7. Axial grooves 4 and a circumferential rib 5 on each element 1 prevent movement of the element in the holder, which may be of nylon &c. moulded on to the element. Alternatively, the holder may be of metal, with axial strips engaging the grooves 4, Fig. 5 (not shown), and secured by screws which may engage the element to prevent relative endwise movement.
Patent GB-257122-A (GB)
Title: Improvements in radio frequency amplifying system
IPC: H03H7/01
Filed: 1925-10-20
Abstract: 257,122. Jones, L. L. Oct. 20, 1925. Thermionic amplifiers. - A high-frequency amplifying-system comprises a thermionic valve 2RF with an input circuit i<2> tunable through a predetermined range of frequencies and an output circuit o<2> coupled to another circuit or valve 3RF by a non-tunable coupling having a natural frequency greater than the highest frequency of the predetermined range. The coupling may be by a transformer T<2> or by an impedance such as I<1>, I<2>, or I<3>. Inherent reaction is neutralized throughout the frequency range by inserting in the plate circuits o<1>, o<2>, o<3>, o<5> resistances R - - R, which are free from capacity or inductance and have a value substantially equal to the impedance of the associated valve divided by its amplification factor. The output from the amplifier is controlled by adjustable filament resistances r<4>, r<5>, r<6>. Alternatively the output is controlled and the amplifier stabilized by means of a potentiometer x, Fig. 3, placed across the primary P of transformer T and having a resistance of the order of magnitude of the impedance of the valve. The central part of the potentiometer may be used for varying the selectivity while maintaining the output constant.
Patent GB-1183565-A (GB)
Title: Improvements in and relating to Tool Clamping Devices
Inventor: LEBBAEUS ROLF
IPC: B21D37/04
Filed: 1968-05-31
Abstract: 1,183,565. Tool holders. PRESSEN-UND SCHERENBAU ERFURT VEB. 31 May, 1968, No. 26212/68. Heading B3H. A tool clamping device comprises a doubleacting piston-cylinder assembly 1 whose pistonrod 10 is connected to a pair of parallel bellcrank levers 2 which are pivoted in the housing of the device and pivotally connected at their mid-point to a thrust link 3 connected in turn to a stud head 15 of a clamping stud 4. The stud has a spring mounted flange 9 at its lower end so that the tool can be clamped between a plate 20 on the ram or press bed and the flange. The stud is screwed into the head 15 so that the separation of the flange and plate can be adjusted. The piston-cylinder assembly may be pneumatic or hydraulic and upward movement of the piston-rod causes the stud 4 to pivot inwards until it abuts a stop 8 and then slide upwards. The link 3 and one arm of the bell-crank act as a toggle which is over-stepped at the end of the movement to retain the clamping force. A limit-switch 19 on the housing is connected with the pivot pin 12 to stop the fluid supply. The process is reversed to unclamp the tool. A twin arrangement comprising two clamping devices of the above type may be used, Figs. 3 and 4 (not shown).
Patent GB-1060935-A (GB)
Title: Storage electrode for television pickup tubes
IPC: H01J29/41
Filed: 1965-06-21
Abstract: 1,060,935. Television pick-up tubes. FERNSEH G.m.b.H. June 21, 1965 [June 20, 1964], No. 26224/65. Heading HID. To reduce image retention in the vitreous storage electrode of an image orthicon camera tube, the surface thereof facing the photocathode has evaporated thereon an oxygencontaining compound of lithium with one or both of the elements beryllium and boron. In particular lithium beryllate or ortho-lithium borate may be evaporated on to a glass foil in an oxygen-containing atmosphere at a pressure of not more than 5 x 10-<SP>4</SP> Torr. The lithium may be present in stoichiometric excess.
Patent GB-852728-A (GB)
Title: Improvements in or relating to electrical discharge tubes
IPC: H01J5/52
Filed: 1959-07-31
Abstract: 852,728. Discharge apparatus. MARTOUDIS, S. G., and VASSILOPOULOS, A.G. July 31, 1959, No. 26295/59. Class 39(1). An electric discharge tube, particularly a lamp, has an electrode 1 connected by a lead to lead sheafed H.T. cable 3. The connection between this is protected a waterproof sleeve of resilient plastic material 4 which envelopes part of the lead and the discharge tube envelope. Particular materials of the member 4 are polyvinylchloride, polyethlyene, synthetic rubber or neoprene. Prior use of glass caps packed with insulating compound is referred to.
Patent GB-340527-A (GB)
Title: Improvements in or connected with light-sensitive cells and like devices
IPC: H01J40/04
Filed: 1929-08-29
Abstract: 340,527. Photo-electric cells. KAYE, L. KECSKEMETI-, 51, Sudbury Avenue, Wembley, Middlesex, and BRITISH TALKING PICTURES, Ltd., River Plate House, Finsbury Circus, London. Aug. 29, 1929, No. 26358. [Class 39 (i).] The cathode of a photoelectric cell is formed on a conical or frusto-conical surface and surrounds or is surrounded by an anode so that the anode does not shade the cathode, and light entering through a window in the envelope passes through an annular space between the electrodes. As shown, the cathode f consists of a coating on a conical part of the envelope, and the anode d is of truncated conical shape. In a modification a conical anode is supported at its apex, and is surrounded by the cathode.
Patent GB-907831-A (GB)
Title: Vulcanisation of natural or synthetic rubber
Inventor: KENDALL CHARLES EDWIN
IPC: C08K5/00
Filed: 1958-08-19
Abstract: In vulcanizing natural or synthetic rubber, the rubber is admixed with sulphur and a thiourea substituted with one or more aliphatic hydrocarbon substituents and the mixture heated at vulcanizing temperature, e.g. 90 DEG C. to 160 DEG C., preferably 140 DEG C. The thiourea, which acts as an antiozonant in the vulcanizate preferably contains from one to four substituents which may, in the case of more than one substituent, be either identical or dissimilar.  The substituents may be acyclic or alicyclic, e.g. alkyl, alkenyl, or cyclohexyl, and be saturated groups, or unsaturated groups containing at least 8 carbon atoms; specified substituted thioureas are:- tetrabutyl thiourea, di-n-hexyl thiourea, symmetrical diphenyl thiourea, ethylene thiourea, pentamethylene thiourea, di-octadedecenyl thiourea &c., and the amount used is preferably 0,5% to 5% by weight based on the weight of the rubber, the substituted thiourea comprising at least 70% by weight of the accelerator content of the rubber mixture, which preferably contains from 1 to 5% of sulphur by weight, based on the weight of the rubber.  Other vulcanizing ingredients may be incorporated, e.g. zinc oxide, stearic acid, and up to 30% of the accelerator content may comprise a known accelerator, e.g. a benzthiazole or a dithiocarbamate.  In order to increase the antiozonant action of the thiourea a small amount of a carrier substance, e.g. a metal soap of a fatty acid, a liquid organic polysulphide, a polyethylene condensation product such substances and others being described in Specification 887,173, may be incorporated in the mixture.  Specified synthetic rubbers vulcanizable by the process include copolymers of butadiene and isoprene with, e.g. styrene, isobutylene ketone, acrylonitrile, methyl vinyl ketone or methyl isoprophenyl ketone.  Specification 887,174 also is referred to.
Patent GB-246929-A (GB)
Title: Improvements in or relating to transformers for electric arc welding
IPC: H01F29/12
Filed: 1924-11-08
Abstract: 246,929. Schr÷der, E. Nov. 8, 1924. Transformers. - In a welding transformer in which regulation is effected by relative movement of the primary and secondary windings, the movable winding S is divided into two parts which are independently movable about the centre of an annular core A. The core is supported by bolts P radiating from bosses B to one of which is secured a notched disc K adapted to be engaged by a lever H pivoted at i to the coil former so as to enable the coil to be retained in any position of adjustment. The transformer is enclosed in, a cylindrical casing U so as to facilitate portability by rolling, and the casing is extended at one end to provide storage accommodation for accessories such as welding mask, gloves, &c.
Patent GB-537682-A (GB)
Title: Improvements in or relating to treating or refining glyceride oils and fats
IPC: C11B3/00
Filed: 1939-09-27
Abstract: 537,682. Purifying oils. CLAYTON, W. L., HEINMG, L., WHITTINGTON, H., FUESLER, J. P., CANNAFAX, D. SUMNERS, D., McASHAN, S. M., ODEN, S., and ANDERSON, W. L., [trading as ANDERSON, CLAYTON & CO.]. Sept. 27, 1939, No. 26737. Convention date, Oct. 13, 1938. [Class 91] Glyceride oils or fats are refined by subjecting to a preliminary refining treatment and then subjecting to the action of radiant energy having a wavelength of less than 0À535 micron and then refining the oil or fat. This treatment is stated to reduce the degree of dispersion of the colouring matter. The subsequent refining is a necessary step in the process since without this, the bleaching action by the radiant energy is only temporary. The preferred forms of radiant energy are ultra-violet rays and X-rays. Examples are given of the treatment of oils with a Cooper-Hewitt mercury vapour lamp and also with X-rays.
Patent GB-190289-A (GB)
Title: Improvements in or connected with electric connections or couplings
IPC: H01R4/26
Filed: 1921-10-10
Abstract: 190,289. Oldham, G., and Oldham, J. Oct. 10, 1921. Couplings between conductors having mating teeth, ridges, serrations or the like d on an outer surface have the fastening devices e arranged so that the pressure is applied externally of the conductors in a direction at right angles to the plane containing the teeth or the like. Clamping plates g and spring washers h may be used with the fastening devices.
Patent GB-722574-A (GB)
Title: Production of salts of substituted naphthalenones
Filed: 1952-10-27
Abstract: A method of preparing an alkali or alkaline earth metal salt of 5,8,8a-trihydro-4-hydroxy-3-alkoxy - 8a - methyl - 1 - naphthalenone comprises treating a 4a,5,8,8a-tetrahydro-2-alkoxy-4a-methyl-1,4-naphthoquinone in which the alkoxy group contains from one to five carbon atoms with an alkaline derivative of an alkali or alkaline earth metal in an inert organic solvent.  Suitable alkaline derivatives are the alkali metal and alkaline earth metal alkoxides, oxides and hydroxides, e.g. sodium, potassium and lithium hydroxides and calcium, barium or magnesium oxides or hydroxides.  The product may be precipitated by pouring the reaction mixture into a non-solvent for the salt, e.g. open chain and cyclic ethers.  In examples: (1) the sodium salt of dl-5,8,8a-trihydro-4-hydroxy-3-methoxy-8a-methyl-1-naphthalenone is prepared by reacting dl-trans.-4a,5,8,8a-tetrahydro-2-methoxy-4a-methyl-1, 4-naphthoquinone with a methanol solution of sodium or sodium hydroxide.  The naphthoquinone derivative is recovered by neutralizing the salt with acid; (2) the same product is obtained using the cis-naphthoquinone derivative in place of the trans.-compound of example (1).  In a generally similar manner are prepared (3) the potassium salt of dl-5,8,8a-trihydro-4-hydroxy-3-methoxy-8a-methyl-1-naphthalenone; (4) the potassium salt of dl-5,8,8a-trihydro-4-hydroxy-3-ethoxy - 8a - methyl - 1 - naphthalenone; (5) the barium salt of d-5,8,8a-trihydro-4-hydroxy-3 - n - propoxy - 8a - methyl - 1 - naphthalenone; (6) the calcium salt of dl-5,8,8a-trihydro-4-hydroxy - 3 - n - pentoxy - 8a - methyl - 1 - naphthalenone; (7) the barium salt of dl-5,8,8a - trihydro - 4 - hydroxy - 3 - n - butoxy - 8a - methyl - 1 - naphthalenone; (8) the barium salt of dl-5,8,8a-trihydro-4-hydroxy-3-methoxy-8a-methyl-1-naphthalenone.
Patent GB-1149839-A (GB)
Title: Improvements in or relating to the manufacture of compression rings
Inventor: PRASSE HERBERT FREDERICK
IPC: F16J9/26
Filed: 1966-05-20
Abstract: 1,149,839. Piston rings. RAMSEY CORP. 20 May, 1966, No. 26993/68. Divided out of 1,133,753. Heading F2T. A piston ring comprises upper and lower annular portions of equal radius and an annular portion extending between, and of greater radius than, the other portions and having thereon a layer 183 of wear-resistant metal. The ring may be made of cast iron and the layer 183 sprayed on as disclosed in Specification 1,133,753.
Patent GB-206828-A (GB)
Title: Improvements in shock absorbers for vehicles
IPC: F16F7/04
Filed: 1923-10-29
Abstract: 206,828. Marcus, C. Nov. 10, 1922, [Convention date]. Vibration-dampers.-In a frictional shock-absorber for vehicles of the type in which movement in one direction is retarded while movement in the other direction is substantially free, a pair of friction members are pressed together by a nut controlled by a member connected to one of the relatively moving parts of the vehicle between which the shock absorber acts, resilient means being provided for turning the said nut for the purpose of allowing a short, substantially free initial movement of the bodv in the direction in which movement is to be retarded after which the device applies the maximum resistance and maintains this resistance substantially uniform thereafter. The apparatus as shown comprises a plate 1 attached in spaced relation to the chassis 2, a fixed spindle 3 having a steeply-pitched screw thread 21, two friction washers 18, 19, a movable plate 14 with an arm 15 adapted for attachment to the axle, a nut 20 with flange 21<a>, a spring 22, and a cap 26. The spring 22 is coiled and attached at one end to the flange 21<a> at 24 and at the other end in a slot 25 in the spindle 3. On movement of the arm 15 in the free direction, the slight friction caused by the pressure of the spring 22 causes the nut 20 to be unscrewed and allow unretarded movement of the plate 14. On the return stroke, a small initial free movement is permitted owing to the play of the nut, after which the flange 21<a> of the nut compresses the friction washers and causes the maximum retardation during the remainder of the stroke. The pitch of the screw is designed to give the desired pressure and consequent frictional resistance.
Patent GB-1273950-A (GB)
Title: Improvements in or relating to sealing means for rolling bearings
IPC: F16J15/3232
Filed: 1971-04-19
Abstract: 1,273,950. Sealing rolling bearings. SKF KUGELLAGERFABRIKEN G.m.b.H. 19 April, 1971 [16 April, 1970], No. 27050/71. Headings F2A and F2B. A rolling bearing assembly comprises an angle-sectioned sheet metal ring 4 pressed on to the shaft 6 and a resilient sealing disc 1 of U- shaped cross-section secured in an annular groove in the outer race; one flange 2 of the disc bears axially on a lateral surface of the radially-extending part 3 of the ring 4, whilst the other flange 5 bears against the shaft or a member rotating with the shaft. The sealing disc may contain a sheet metal insert 8. The space 7 acts as a grease reservoir.
Patent GB-683576-A (GB)
Title: A hydraulic system for selective operation of tops, windows and other parts of automobiles
IPC: B60J7/12
Filed: 1950-11-07
Abstract: 683,576. Hydraulic machines. PARSONS, J. B. Nov. 7, 1950, No. 27185/50. Class 69 (ii). A hydraulic system for automobiles having a folding top and shiftable members such as windows and seats, comprises a reversible electric motor M<SP>1</SP> driving a pump M<SP>3</SP>, an hydraulic top operating mechanism 10-11, a hydraulic regulator mechanism individual to each shiftable member R, R<SP>1</SP>, R<SP>2</SP> R<SP>3</SP>, SA, a normally open valve 17 allowing free liquid flow between the pump and the hydraulic top operating mechanism, and tubes B, C, switches 26, and electrical circuits for energising the motor M<SP>1</SP> and concomitantly operating a selected regulator mechanism and closing the valve 17 thereby to operate a regulator mechanism independently of the top mechanism, and tubes D, G, electrical circuits, and a switch 31 for energising the motor M<SP>1</SP> in one direction or the other for actuating the top mechanism 10-11 to fold or extend the top independently of the regulator mechanisms. The top operating mechanism comprises cylinders 10 and double acting piston rods 11 ; the valve 17 being spring urged to its open position and closed by energising a solenoid surrounding it. Each regulator mechanism comprises a cylinder 12 having a single-acting piston rod 13 attached to a spring-loaded linkage 14 on the shiftable member. Each cylinder 12 has in its base a normally closed valve surrounded by a solenoid which, when energised, opens the valve to allow liquid to flow to the cylinder or to flow from the cylinder under the action of a spring 16. Specifications 604,000, [Group X], 619,003, [Group XIV], and 674,316 are referred to.
Patent GB-1235185-A (GB)
Title: Process for the production of unsaturated esters of carboxylic acids
Inventor: KRONIG WALTER
IPC: C07C69/15
Filed: 1968-06-07
Abstract: 1,235,185. Preparation of unsaturated esters of carboxylic acids. FARBENFABRIKEN BAYER A.G. 7 June, 1968 [11 July, 1967; 29 March, 1968; 15 Feb., 1968], No. 27216/68. Heading C2C. A process for producing unsaturated esters of carboxylic acids comprises catalytically reacting olefins with organic acids and oxygen at elevated temperature and at normal or elevated pressure, wherein most of the carboxylic ester formed, the acids and water are separated by cooling from the reaction products leaving the reactor, and the uncondensed components are recycled either wholly or in part to the inlet of the reactor, the recycled gas from which the condensed components have been removed being washed before it enters the reactor with a liquid organic solvent boiling at a higher temperature than the unsaturated ester formed. Examples describe the preparation of vinyl acetate from ethylene, oxygen and acetic acid using a catalyst comprising palladium, gold and potassium acetate on a silicic acid support. The liquid organic solvent may be an oxygen-containing compound of the glycol type, or an ether or ester thereof or may be the same carboxylic acid as that used to prepare the unsaturated ester.
Patent GB-375639-A (GB)
Title: Improvements in or relating to photo-electric cells
IPC: H01J31/50
Filed: 1931-10-01
Abstract: 375,639. Photo-electric cells. NAAMLOOZE VENNOOTSCHAP PHILIPS' GLOEILAMPENFABRIEKEN, 13D, Emmasingel, Eindhoven, Holland. Oct. 1, 1931, No. 27341. Convention date, Oct. 1, 1930. [Class 39 (i).] In a photo-electric cell, particularly for photography, having a photo-electric electrode and an electrode consisting at least in part of a fluorescent substance, a screen, arranged between the electrodes, allows the passage of electrons but not of fluorescent rays. As shown in Fig. 1, the cathode 5 consists of an alkali metal such as caesium deposited on a thin transparent layer 4 of calcium fluoride. The anode 8 consists of a fluorescent substance such as zinc sulphide, willemite (zinc silicate), scheelite (calcium tungstate), or barium platinocyanide applied to a layer 7 of metal such as platinum, transparent to fluorescent rays, for example by evaporation in a vacuum ; the conductivity of the layer may be improved by the inclusion of conducting particles. The screen 10 consists of a sheet of black paper in a metal frame. In the cell shown in Fig. 2, the screen 16 consists of a thin metal plate which may be connected by a switch 19 so that a positive or negative potential may be applied to the screen in order to accelerate or retard the passage of electrons. A shaft 23, carrying a drum for a film 22, is provided with lugs 24 engaging with a lever 25 to operate the switch 19 at intervals, so as to apply a positive potential to the screen during the periods when the film is exposed to the fluorescent rays, and a negative potential for other periods. Specifications 326,200, [Class 39 (i), Electric lamps, Arc &c.], and 366,883 also are referred to.
Patent GB-907779-A (GB)
Title: Polyoxymethylene resin compositions
IPC: C08K5/053
Filed: 1961-07-28
Abstract: A composition comprises a polyoxymethylene resin and a minor proportion of glycerin.  Specified proportions of glycerin are 1 to 20, preferably 3 to 10%, based on the total composition.  The glycerin may be added to the resin in finely divided form and the mixture extruded or milled to give a homogeneous blend. Specifications 753,299, 770,717 and 868,565 are referred to.
Patent GB-1129779-A (GB)
Title: Medical treatment area
IPC: E04B1/346
Filed: 1967-06-14
Abstract: 1,129,779. Dental offices. C. P. SMITH. 14 june, 1967 [10 Aug., 1966], No. 27485/67. Heading E1A. A dental office has three treatment rooms I, II, III which are separated by movable curtains 18, 20, 22 and disposed within a wall 13 having doors 14, 15, 16 communicating with a reception centre 10, 11, 12 and an exit 17. Dental chairs 27 and operating equipment are mounted on a rotary platform 24 adapted to float on an air cushion and be driven in either direction. The curtains, air supply motor and drive motor for the platform, to-gether with attendant equipment used for treatment are controlled by a common electrical circuit for details of which Fig. 4 (not shown) shouldbe referred to.