baber/WOPTO huggingface dataset:
Patent GB-578148-A (GB)
Title: Improvements in and relating to the water-proofing of casein formaldehyde plastics
Filed: 1943-11-10
Abstract: Preformed casein-formaldehyde plastics, i.e. in the form of sheets, rods or other shaped articles, are waterproofed by providing a coating or deposit of synthetic resin generated in situ throughout the mass by a process involving chemical reaction and/or polymerization.  They may be treated with aqueous solutions to form resins of the phenol-formaldehyde or like type or with liquids such as styrene or other vinyl compounds to form p  polymeric resins.  The treatment may be subsequent to one with bond-building agents as described in Specification 577,753.  In examples: (1) casein-formaldehyde sheets is heated under reflux on a steam bath with phenol, formalin, and hydrochloric or oxalic acid for 4-6 hrs.; (2) the sheet is heated in styrene at 85 DEG  C. for 5 hrs., hydrogen peroxide added, the whole left overnight, and then heated a further 5 hrs. at 85 DEG  C. and 1 hr. in an air oven at 80 DEG  C.; (3) the sheet is treated with benzoquinone as in example (1) of Specification 577,753 and then heated in styrene for 4 hrs. at 212 DEG  F. under reflux.  Figures for water absorption are compared with those of the untreated sheet.
Patent GB-143599-A (GB)
Title: Improvements in or relating to electrical plug and socket switches
IPC: H01R13/703
Filed: 1919-02-20
Abstract: 143,599. Crabtree, J. A. Feb. 20, 1919. Plug couplings combined with electric switches. In a switch-plug of the kind in which the withdrawal of the plug automatically opens the switch, this movement also automatically locks the switch in the open position. In the arrangement shown, a plug with an earthing- socket and a tumbler switch are enclosed within a common casing. The switch may be of the kind described in Specifications 140,179 and 140,180, [both in Class 38 (v), Electric switches &c.], in which a movement of the operating-lever in one direction actuates the contact-member in the opposite direction. A cam-member 57 is pivoted in proximity to the plug sockets and is connected with the switch-operating member 1 by a link 59 controlled by a spring 61, the connexion to the switch being through a pin 63 engaging the slotted end of the link. The on position of the switch is shown in full lines, and, with the plug in place as shown, the switch can be moved on or off. When the plug is withdrawn, a roller 65 mounted within the bifurcated end of the earthing-plug rocks the cam and link (which together constitute a toggle linkage) and carries the linkage over the dead-centre position. The link 59 moves to the right and carries with it the pin 63 on the switchoperating member, thereby bringing the switch to the off position, in which it is positively locked, since the pin 63 engages the end of the slot and cannot be moved.
Patent GB-657668-A (GB)
Title: Gyroscopic stabilising apparatus
IPC: F41G5/16
Filed: 1943-03-16
Abstract: 657,668. Self-levelling arrangements. KUIJVENHOVEN, A. W. March 16, 1943, No. 4237. [Class 113 (i)] [Also in Groups XX, XXI and XXXVIII] A pair of gyroscopes having a common gimbal frame are used to provide stabilized horizontal and vertical datum planes with respect to which controlled apparatus, e.g. guns, directors, sights, searchlights, &c. may be given elevational and training movements. The roll gyro with a normally vertical axis A3, Fig. 1, is mounted in a casing G1 rigidly secured in a gimbal F1 which in turn is pivotally mounted about an axis A2 within an outer gimbal F2. The outer gimbal F2 is pivotally mounted about an axis A1 within brackets B1 secured to the moving body. Relative movements between the fixed brackets B1 and the frame F2, and between the frames F2 and F1 are imparted through gearing WT1 and WT2 to two pairs of transmitters T1 and T2 respectively. Gravity responsive mercury switches MS1 and MS2 of the kind described in Specification 657,670, [Group XX], operate on tilt of the axis A3 from the vertical to energize slit phase induction motors TM2 and TM1 which apply torques to restore the frames F1 and F2 to their normal positions. The yaw gyro with a horizontal spin axis A5 is mounted in a casing G2 pivoted about a horizontal axis A4 within a gimbal F4 which in turn is pivoted on the roll gyro about the vertical axis A3 within the common gimbal F1. Relative movement between the frames F4 and F1 is imparted by gearing WT3 to a transmitter T3. A mercury switch MS3, similar to switches MS2 and MS1 energizes a torque motor TM3 which, on tilt of casing G2 about axis A4, precesses the gyro so that its axis of spin A5 is maintained in a horizontal plane. The combination of the two gyros provides a stabilized horizontal plane (A2-A1) and a stabilized vertical plane through F4 and the controlled apparatus may be stabilized with reference to these planes by motors responsive to transmitters T1, T2 and T3 by mechanical or electrical means (see Group XXXVIII). The yaw gyro may be slaved to a compass so that the transmitter T3 provides control in an invariable azimuth datum plane. An electromagnetic clutch may be fitted in the drive to the transmitter T3 which, when the transmitter is switched off, declutches the rotor from the gyro drive and locks it to the stator so that when the transmission is switched on again the rotor takes up instantaneously the new position with respect to the gyro drive thus avoiding a violent movement of the corresponding axis in the controlled apparatus.
Patent GB-248721-A (GB)
Title: Improvements in electronic discharge devices
IPC: H01J21/20
Filed: 1926-02-15
Abstract: 248,721. Raytheon Manufacturing Co., (Assignees of Smith, C. G.). March 5, 1925, [Convention date]. Vacuum tubes; lowpressure metallicvapour apparatus. - The potential drop in the gas or vapour in a discharge tube is lowered by maintaining a higher gas &c. pressure in the. region of the source of the discharge than elsewhere, by providing a small discharge opening in a confined source of discharge, and causing gas &c. to flow into the confined space through the opening under the action of an electrostatic or electromagnetic field, and independently of vaporization in the region of the opening. The filling is preferably the vapour of an alkali metal such as caesium. In the rectifier shown in Fig. 1, a cathode comprises concentric cylinders 8, 9 with a neck 11 having a diameter lass than the mean free path of molecules outside the cathode. A heating current is passed through the cylinders in such direction that the outer end of the neck is positive with respect to the inner end. A heatlocalizing shield 4 encloses the cathode and a cup-shaped anode 3. It is suggested that molecules are ionized in the neck 11, and the ions, which are drawn into the cylinder 8 by the potential gradient along the neck. increase the pressure in the cylinder, and produce a high electron emission from its internal surface. Electrons are directed axially through the neck to the anode by a magnetic field produced by a winding 5. In a modification for use as an amplifier or detector, a control grid is mounted between a plate anode and the neck. In the rectifier shown in Fig. 2, a cylindrical cathode 15 mounted on leads 16 is surrounded by a shield 18. Two plate or ring-shaped anodes 19 are mounted adjacent to openings in the shield and cathode, and serve to provide the field for directing the ions into the cathode. In the oscillation-generator shown in Fig. 4, a cathode 41 having a neck 42 is enclosed with a heating-filament 46, a positively-charged ring 44, and two plate anodes 43, in a shield 45. A winding 54 produces an axial magnetic field for directing electrons to the anodes. The anodes are connected with the positive terminal of a battery 50 through coils 51 coupled with coils in the oscillating-circuit 53, and the frequency of the oscillations is controlled by magnetic fields produced by alternating-current windings 55. In a modification, four pairs of plate anodes are mounted adjacent to openings in the cathode, and the shield is replaced by a helical strip which serves to heat the cathode and to provide the axial magnetic field. In another arrangement a rod-shaped anode projects into a cylindrical cathode of boron or carbon or the rod may terminate at the end of the cathode, across the mouth of which perforated plates are mounted. Specification 248,722 is referred to.
Patent GB-213231-A (GB)
Title: Improvements in advertising devices for passenger vehicles
IPC: G09F21/04
Filed: 1924-02-19
Abstract: 213.231. Andresen, N. March 23, 1923, [Convention date]. Actuating.-A notice board, model or other object is suspended or supported upon one cr more stationary members so that it alters its position by its own inertia upon variation in the movement of a vehicle. As shown in Fig. 1, a model of a cigarette 1 is suspended to travel on a rod 4 provided at its ends with spring buffers 6. The board or model may rest upon the bar and be supported at its upper part. Also, it may lie flat upon two parallel bars.
Patent GB-1139154-A (GB)
Title: Semi-conductor devices and the manufacture thereof
Inventor: GLASS WILLIAM BRIAN
IPC: H01L29/00
Filed: 1967-01-30
Abstract: 1,139,154. Semi-conductor devices. WESTINGHOUSE BRAKE & SIGNAL CO. Ltd. 27 Nov., 1967 [30 Jan., 1967], No. 4382/67. Heading H1K. A method of manufacturing a semi-conductor device includes dividing a larger crystal containing a PN junction into smaller pellets, each including a junction, and mounting a pair of contacts 8, 9 one on each of the opposed faces of such a pellet, one of the contacts 8 being of lesser area than the other 9, and both lying completely within the bounds of the faces to which they are applied, after which the material of the pellet is etched away from the areas not covered by the contacts 8, 9 so that the peripheral face slopes inwards from the larger to the smaller contact. The contacts may be circular, forming a frusto-conical body, and they are made of silver. A coating 7 of nickel gold alloy is deposited on the surface of the pellet before the application of the contacts which are soldered to the alloy. The semi-conductor body is silicon with boron and phosphorus as acceptor and donor impurities. The doping is such that the resistivity of the material 4 on the side of the PN junction nearer the larger area contact 9 is lower than the resistivity on the side nearer the smaller area contact 8. The device is completed with a coating of varnish, resin or rubber.
Patent GB-693521-A (GB)
Title: Improvements in or relating to apparatus for determining the position of a mercury meniscus
IPC: G01D5/20
Filed: 1951-02-23
Abstract: 693,521. Electric indicating systems. BRITISH OXYGEN CO., Ltd., and COCKETT, A. H. Feb. 4, 1952 [Feb. 23, 1951], No. 4472/51. Class 40 (i). Variations in the height of a mercury column 2 in a closed non-magnetic container, e.g., a tube 1, are measured by the corresponding impedance changes produced in an A.C. energized coil 5 surrounding the tube. To enhance the sensitivity of the device an iron wire 3 may be held centrally within the tube 1, e.g., by springs 4, and a further shorter coil 6 series connected with coil 5 may embrace the latter at a position corresponding to a predetermined (zero) position of the mercury meniscus. For measuring fluid-flow by means of a differential manometer, each of the limbs of the manometer is constructed as shown in Fig. 1, and the series combination of coils 5, 6, on the two limbs connected in alternate arms L1-R1, L2-R2 of an impedance bridge, Fig. 2, fed through a constant output voltage transformer T1 and step-down transformer T2. The bridge is balanced at a predetermined mercury level, the galvanometer G then indicating deviations therefrom. Alternatively, a barreter may be used for ensuring a constant voltage supply to the bridge.
Patent GB-750388-A (GB)
Title: Improvements in or relating to printing machines
IPC: B41L45/02
Filed: 1953-02-09
Abstract: 750,388. Printing-machines. EAU, GAZ, ELECTRICITE & APPLICATIONS. Feb. 9, 1953 [Feb. 8, 1952], No. 4550/55. Divided out of 750,306. Class 100 (2). Platen machines.-In a machine of the construction disclosed in Specification 750,306, a second detachable printing unit 121, Figs. 2 and 4, is provided, e.g. for printing a date, mounted on a movable support 122. By sliding and rotating a rod 125 by means of a knob 124 outside the casing 123, the unit 121 is brought into a position where it is accessible through an aperture 126 in the casing, and can be replaced. Thereafter the rod 125 is rotated until the unit abuts'a stop at the level of the printing position, and then displaced axially to insert the printng unit below the printing head 8. Specification 651,263 also is referred to.
Patent GB-280758-A (GB)
Title: Improvements in closures for jars, glass bottles, tins and like containers
IPC: B65D41/16
Filed: 1927-02-18
Abstract: 280,758. Chamberlain, G. P. Feb. 18, 1927. Capsule - like closures; detachable stoppers secured by clips. - Bottles, jars, tins &c. having a rimfitted mouth are closed by a cap having a spring tongue b depending from its flange a<1>, the tongue being provided intermediate its height with a transverse indentation or bar d, preferably of less width than the tongue, adapted to snap under the bead e of the bottle &c. The tongue may co-operate with similar tongues or with inturned arms preliminarily hooked under the bead on the opposite side of the closure. In the former case, an incision or slot c cut from the flange of the cap above one of the tongues may provide means for tearing off the tongue to remove the closure. A vertical channel or groove formed on the exterior and beneath the widest diameter of the bead may engage the sides of the indentation to prevent rotation of the closure. Specifications 14861/06, 216,633, and 247,896 are referred to.
Patent GB-548120-A (GB)
Title: Improvements relating to the production of oil-modified phenolic condensation products
IPC: C08G8/28
Filed: 1941-04-08
Abstract: 548,120. Phenol-aldehyde resins. BRITISH THOMSON-HOUSTON CO., Ltd. April 8, 1941, No. 4652. Convention date, April 12, 1940. [Class 2 (iii)] Oil modified phenol-aldehyde condensation products suitable for use as solventless coating or impregnating materials or after further hardening and curing by application of heat as moulding materials are obtained by heating to 100-110‹C. in the presence of an alkaline catalyst phenols or substituted phenols with aldehydes in the presence of at least 35 per cent. oiticica oil the heating being continued until a product is obtained which cures in 25 secs when heated on a hot plate to 200‹C. The oiticica oil can be replaced as to 65 per cent. of its content by castor oil. Catalysts specified comprise monamylamine, triethanolamine or alkali hydroxides. Preferably cresol comprising a mixture of substituted phenols having an average molecular weight of 120 is used as the phenol constituent. Suitable driers e.g. lead, manganese, and cobalt compounds may be added. In examples (1) 46 parts oiticica oil, 9 parts paraformaldehyde, 3 parts formalin, 41 parts cresol and 0.6 parts monoamylamine are mixed in an iron kettle and heated slowly at 100-110‹C. for about two hours ; (2) oiticica oil and castor oil in equal parts are mixed with other ingredients as in (1). 'Specifications 491,519 and 515,985 are referred to.
Patent GB-1412174-A (GB)
Title: Electrochemical cell with organic electrolyte solvent
IPC: H01M6/16
Filed: 1973-01-30
Abstract: 1412174 Cell with organic electrolyte SAFTSOC DES ACCUMULATEURS FIXES ET DE TRACTION 30 Jan 1973 [31 Jan 1972 16 March 1972 23 March 1972 30 Oct 1972] 4707/73 Heading H1B A cell comprises a negative electrode whose active material is an alkali metal, a positive electrode, and an electrolyte consisting of a solute and a solvent, the solvent comprising an ether selected from the group consisting of dioxane, dioxolane and propylene oxide, the ether being alone or in combination with an ester. The preferred negative active material is lithium and the positive electrode active material is selected from the group comprising copper oxide, monovalent silver chromate, lead chromate, a fluorinated carbon, and a fluorinated hydrocarbon polymer, e.g. PTFE. The positive active material may be mixed with graphite. Preferred esters are polypropylene carbonate and ethylene carbonate. The preferred solute is lithium perchlorate. Button type cells having a pair of lithium anodes and a single cathode, are described.
Patent GB-398407-A (GB)
Title: Improvements relating to apparatus for polishing flat surfaces
IPC: B24B7/24
Filed: 1933-02-16
Abstract: 398,407. Polishing glass, marble, &c. SOC. ANON. DES MANUFACTURES DES GLACES ET PRODUITS CHIMIQUES DE ST-GOBAIN, CHAUNY, ET CIREY, 1, Place des Saussaies, Paris. Feb. 16, 1933, No. 4807. Convention date, Feb. 17, 1932. [Class 60.] In apparatus for polishing sheets of glass, marble slabs, &c., having a rotating runner g carrying pins e driving polishing-discs c, means are provided to prevent tilting of the discs under the action of centrifugal force, the means comprising a double armed lever i pivoted at k to the runner, the upper arm of the lever carrying an adjustable weight l, and the other arm pressing on a pin m slidable in the runner. The pin carries a wheel q bearing on the disc, the force on the pin due to the action of centrifugal force on the weight l serving to prevent tilting of the disc.
Patent GB-998192-A (GB)
Title: Pneumatically-operated table game
IPC: A63F7/06
Filed: 1961-11-15
Abstract: 998,192. Table games. E. ROMEI. Nov. 15, 1961 [Nov. 16, 1960], No. 40822/61. Headings A6D and A6H.  Apparatus for playing a table game, wherein balls are propelled over a playing surface by air jets, comprises a plurality of nozzles 13 rotatably mounted on a playing surface 3, each nozzle being in communication with a valve 15, 16 whereby the nozzle may be selectively connected to either the compressed air manifold 23 of a compressor unit 21 (not shown) or to the suction manifold of the unit, the connection to the compressed air manifold incorporating a further valve 24 which permits an air jet of only short duration to issue from the nozzle at any particular time. A single control 33a is provided for each nozzle and is so arranged that by pushing and pulling on the control the corresponding valve 15, 16 is operated via cable 34a, and by rotating the control the orientation of the corresponding nozzle 13 is varied via cable 26. Balls are fed to the playing surface from an underlying reservoir by means of a plunger 5 operated by push-button 7. As particularly described, the game simulates football, each nozzle being surmounted by a model player, and two nozzles occupying simulated " goal areas " (Fig. 10). These latter two nozzles are arranged to be laterally displaceable across the goal area in addition to being rotatable, and two further plungers 42 situated in the playing surface in front of the " goals " are operable to return into play balls passing behind the " goal lines," the balls being fed to the plungers via ramps 41 in the playing surface support. For administration of the game in public places, the push-button 7 and the plungers 42 may be controlled by a coin-freed mechanism and the drive to the compressor 21 may be time-controlled.
Patent GB-901295-A (GB)
Title: Substituted dioxanes and substituted dioxenes
IPC: B01J41/20
Filed: 1961-02-09
Abstract: Dioxanes of general formula <FORM:0901295/IV(a)/1> and dioxenes of general formula <FORM:0901295/IV(a)/2> in which R1 is a hydrogen atom or a C1-C4 alkyl or alkenyl group or phenyl group, R2, R3, R4 and R5 are each a hydrogen atom or a C1-C4 alkyl or phenyl group, provided that R2 and R3 are both hydrogen atoms, may be polymerized in the presence of a small amount of boron fluoride.ALSO:The invention comprises dioxanes of the general formula <FORM:0901295/IV (b)/1> and dioxenes of formula <FORM:0901295/IV (b)/2> in which R1 is a hydrogen atom or a lower alkyl, lower alkenyl or phenyl group and R2, R3, R4 and R5 are each a hydrogen atom or a lower alkyl or phenyl group provided that both R2 and R3 are not both hydrogen atoms.  The "lower" alkyl and alkenyl groups are groups containing not more than 4 carbon atoms.  The substituted dioxanes may be formed by heating at a temperature of from 100-200 DEG C., preferably at a refluxing temperature, an alkynyl b -hydroxyethyl ether of the general formula <FORM:0901295/IV (b)/3> with potassium hydroxide in an organic solvent.  The substituted dioxenes may be obtained similarly from an ether of formula <FORM:0901295/IV (b)/4> Examples are given of the preparation of 2-methylene-3,3-dimethyl-1,4-dioxane; 2-methylene-3,3-dimethyl-1,4-dioxane which on catalytic hydrogenation gives 2-methyl-3,3-dimethyl-1,4-dioxane; 2-methylene-3-n-propyl-1,4-dioxane; 2-methylene-3-methyl-3-ethyl-1,4-dioxane; and 2-methyl-2-dioxene. The alkynyl b -hydroxyethyl ethers used as starting materials may be prepared by reacting acetylenically unsaturated alcohols, 1-alkyn-3-ols with lower alkylene oxides in the presence of boron fluoride as catalyst.  Alternatively the ethers used as starting materials for preparing the dioxenes may be obtained by reacting an acetylenic alcohol with a lower alkylene chlorohydrin in the presence of potassium hydroxide.
Patent GB-747515-A (GB)
Title: Improved method for coating a rope splice with a thermoplastic layer and coated rope splices produced thereby
IPC: B29C45/14
Filed: 1954-02-19
Abstract: In coating a splice in a steel cable with thermoplastic p  material by injection-moulding, the cable is tensioned to such a degree that the part of the cable in the mould does not bend.  The splice may occur adjacent a loop or eye at the end of the cable.
Patent GB-394388-A (GB)
Title: Improvements in and relating to electrodes for mercury arc lamps for the production of ultra-violet light
IPC: H01J17/44
Filed: 1931-10-26
Abstract: 394,388. Discharge apparatus. HANOVIA CHEMICAL & MANUFACTURING CO., Chestnut Street, Newark, New Jersey, U.S.A.-(Assignees of Anderson, W. T. ; 233, New Jersey Railroad Avenue, Newark, and Fraser, H. D. ; 3, East Lincoln Street, Verona, both in New Jersey, U.S.A.) Oct. 26, 1931, No. 5085/33. Convention date, June 16, 1931.. Divided on 394,367. [Class 39 (i).] In a mercury-arc lamp for the production of ultraviolet light comprising a gastight insulating vessel 1 enclosing a solid electrode 2, a series of spirals or layers of gauzes or foils 3 of metal having high thermal conductivities such as tungsten or molybdenum are introduced into or placed in intimate contact with the electrode 2, and are so disposed that they contact with the wall of the container or with a part 4 sealed thereto. The electrode may consist of barium and strontium oxides which are mixed in powdered form with granulated metallic oxides such as ferric oxide, oxides of chromium, aluminium, zirconium, nickel, cobalt and titanium and made into a paste with cellulose acetate in ether-alcohol solution. The paste is moulded on the splayed end of the lead-in wire of tantalum, molybdenum or tungsten, gauzes or the like are wound round to fill the space between the electrode and the tube, and the electrode is dried in a vacuum. It is then heated in a silica tube to 1000‹ C. to carbonize the binder and glowed for a few seconds in the oxy-hydrogen reducing flame. The filling may consist of mercury, introduced into the pocket 6, and neon at a few cms. pressure. The tube is started by stroking it gently with a cloth. Specification 394,367 is referred to. The Specification as open to inspection under Sect. 91 comprises also the application of the invention to discharge devices generally, and the modified construction shown in Fig. 5 (Cancelled), in which gauzes 9 are moulded radially into the electrode and have their outer ends contacting with the walls of the tube. This subject-matter does not appear in the Specification as accepted.