baber/WOPTO huggingface dataset:
Patent GB-1027245-A (GB)
Title: Dental patient's chair
IPC: A61G15/02
Filed: 1963-05-03
Abstract: 1,027,245. Dental chairs. ADAM SCHNEIDER G.m.b.H. May 3, 1963 [May 5, 1962], No. 17627/63. Heading A4J. A dental patient's chair includes a base 2, an intermediate support 3 mounted for height adjustment on the base, a seat part 5 mounted on the intermediate support for pivotal adjustment about a horizontal axis 50, Fig. 4 (not shown) and a back rest 10 tiltably mounted on the seat part 5. The relative positions of the chair parts are adjustably controlled by hydraulically operable means including a first piston and cylinder assembly 25 arranged to control the height of the intermediate support 3 and hence of the seat and back rest parts 5, 10, a seemed piston and cylinder assembly 32, 30 arranged to control pivotal movement of seat part 5 about the horizontal axis 50 and a third piston and cylinder assembly 43, 44 arranged to control tilting of the back rest 10 relatively to the seat part 5. A hydraulic fluid pump 28, an electric motor 29 and a fluid tank 26, are centrally located on chain base 2. An easily accessible unit 49 is attached to the outside of base 2 and incorporates electromagnetic fluid palves 71 to 76, Fig 5 (not shown), electric switches e 1  to e 4 , and foot operated control means 69, 70. A double foot-operated lever 13 is provided for control switch 70 which actuates hydraulic tilting of seat part 5. The lowering movement of the seat is controlled by a foot switch 69 operated by a lever 12 and by a hand switch 47 with means for self-holding until the fully lowered state is reached. Foot switch 69 is effective only for the duration of actuation. Hand switch 47 is arranged on the back of the chair. The operation of the hydraulic adjustment of the back rest is effected by a spring-biased toggle switch 14 which is sunk into the side wall of the back rest.
Patent GB-493570-A (GB)
Title: Plate shaving machines
IPC: B23D1/02
Filed: 1937-06-24
Abstract: 493,570. Shaving printing-plates. HOE & CO., Ltd., R. (Hoe & Co., Inc., R.) June 24,1937, No. 17641. [Class 83 (iii)] A plate - shaving machine for making printing - plates has a common starting device for actuating the table reciprocating mech anism, the hold-down for the plate and the cutter -positioning mechanism. In the application to a machine as described in Specification 448,108, the work 11 is mounted on a table 14 and reciprocated by a screw 15 driven from a reversible electric motor 16. The blade 12 is mounted in a block 22 to swing about a shaft 24. When a solenoid 25 is energized a lever 27 is moved upwards to pull the blade into cutting position and when the solenoid is de-energized the blade moves about its pivot to its relieved position. The plate is held down on the table during operation by a series of rollers 36 mounted in side arms 33 which may be rocked about a pivot 34 to an inoperative position. This movement is effected from a reversible electric motor 41 which rotates a shaft 43 connected by levers 44 and links 45 to the side arms. The lever 44 actuates a switch 57 to limit the clamping movement of the rollers 36. A second switch 59 limits the withdrawal movement. The forward table movement is limited by a switch 51 coacting with a lug 52 to reverse the motor 16 and at the end of the return movement the motor is stopped by a lug 55 which opens a switch 54. A start switch 62 is operated to start the machine which then continues to complete a cycle, but a second switch 63 may be actuated at any time to stop the machine. When the switch 62 is closed, coil 68 is energized, thus operating contacts to start motor 41 and lower the clamping arms. The coil 68 also closes the switch 76 of a holding circuit so that start switch 62 may be released. When arms 33 reach their limiting position, switch 57 is opened, thus de-energizing coil 68 and stopping motor 41. Switch 57 then closes contacts 73, 91 and energizes a coil 99 to start rotation of the table motor. At the same time solenoid 25 is energized to move the blade to cutting position. At the end of the movement, lug 52 opens switch 51 and de-energizes coil 99 thus de-energizing the solenoid 25 and withdrawing the blade. Coil 112 is also energized to cause reverse rotation of motor 41 to raise the arms 33 until this motor is stopped by the switch 59 and coil 113 is energized to cause reverse movement of the table motor to return the table to the starting position at which point the motor is stopped by the limit switch 54. The cycle is then complete.
Patent GB-576842-A (GB)
Title: Improvements in or relating to the production of polyhydroxy compounds
IPC: C07C31/18
Filed: 1943-10-27
Abstract: Polyhydroxy compounds of general formula CR3-n(CH2OH)n + 1, where R is an alkyl group having not more than 4 carbon atoms and n is the integer 1, 2 or 3, are prepared by reacting at least n molecular equivalents of formaldehyde with one molecular equivalent of an aliphatic aldehyde of formula CHnR3-nCHO in the presence of an alkaline catalyst and passing hydrogen into the reaction mixture in the presence of a hydrogenation catalyst.  In the examples: (1) acetaldehyde is added to a cooled mixture of formaldehyde, paraformaldehyde and sodium hydroxide.  After standing, the reaction mixture is hydrogenated under pressure in the presence of a Raney nickel catalyst.  Oxalic acid is added, sodium oxalate filtered off and the filtrate vacuum concentrated yielding pentaerythritol.  In a comparative experiment, the reaction mixture is worked up to obtain pentaerythritol prior to hydrogenation; (2) and (3) sodium hydroxide solution is added to a cooled mixture of propionaldehyde, formaldehyde solution and methanol and to a cooled mixture of isobutyraldehyde and formaldehyde solution respectively.  In each case, after standing, the reaction mixture is hydrogenated under pressure in the presence of a Raney nickel catalyst and pentaglycerol, and pentaglycol respectively obtained from the product.  Other aldehydes which may be used are stated to be isovaleraldehyde, n-butyraldehyde and 2 - methylbutyraldehyde.  Other hydrogenation catalysts which may be employed are stated to be finely-divided platinum or palladium, nickel or cobalt.
Patent GB-1006387-A (GB)
Title: Hardenable, unsaturated polyester moulding masses
IPC: C08K3/16
Filed: 1964-04-29
Abstract: Polyester moulding masses based on unsaturated polyesters and monomeric compounds copolymerizable therewith are stabilized by adding at least one complex compound of cuprous chloride or bromide with a neutral phosphorous acid ester.  Preferably the polyester moulding masses have a copper content of up to 50 p.p.m.  Phosphorous acid esters mentioned are triethyl, tripropyl and triphenyl phosphite and 2,21,211-trichloroethyl phosphite. In the examples:-(1) an unsaturated polyester prepared from maleic and phthalic anhydrides and propane-1,2-diol is dissolved in styrene and stabilized with CuCl.P(OC2H5)3; (2) an unsaturated polyester prepared from maleic and phthalic anhydrides, ethylene glycol and trimethylol-propane diallyl ether is dissolved in styrene and stabilized with CuBr.P(OC6H5)3; (3) an unsaturated polyester prepared from adipic acid, maleic and phthalic anhydrides, ethylene glycol and dihydroxyethyl-aniline is dissolved in styrene and stabilized with CuCl.P(OC4H9)3.
Patent GB-184649-A (GB)
Title: Improvements in and relating to secondary cells or batteries for electricity storage
IPC: H01M10/10
Filed: 1921-06-30
Abstract: 184,649. Smith, C. G. June 30, 1921. Absorbents; electrodes; separator.-A storage cell is filled with plaster of paris to absorb the electrolyte and to separate and support the electrodes. In one method of construction the cell is filled with plaster of paris and water into which greased glass &c. plates are pressed to form pockets for the electrodes. The plates are removed when the plaster has set. The electrodes may be of the lead grid type or each pocket may be provided with a lead conductor surrounded with a paste of sulphuric acid and red lead or litharge with a small quantity of powdered aluminium sulphate. The aluminium sulphate may constitute about 2 per cent of the volume of the lead oxides. The Provisional Specification states that the ends and bottom of each pocket may be lined with a lead strip of such length that when the pocket is filled with active material one end of the lead strip may be bent over to close the top of the pocket and be joined to the other end of the strip and to a terminal bar. Specification 7619/89 is referred to.
Patent GB-1142814-A (GB)
Title: A mechanical locking device for the piston of a hydraulic or pneumatic cylinder
IPC: F15B15/26
Filed: 1966-04-22
Abstract: 1,142,814. Fluid pressure jacks. S. HANCHEN. 22 April, 1966 [24 April, 1965], No. 17767/66. Heading B8H. A piston and cylinder device comprises a piston-rod 1 with an annular sliding piston 13 urged away from an expanding bush 9 by a spring 17. The bush 9 has a friction liner 10 and a female cone 11 arranged to co-operate with a male cone 12 on the piston 13. Under normal conditions pressure fluid admitted through an inlet 16 moves a load attached to the rod 1. Excessive pressure in the cylinder 2, which may, for example, be caused by the load meeting an obstruction, causes the piston 13 to slide along the rod 1 and force the bush 9 into locking engagement with the cylinder 2. The lock is self-locking and cannot be released until pressure is applied through an inlet 3. In a further embodiment, Fig. 3 (not shown), the male cone (12) is fixed to the rod (11) and co-operates with a bush (9) with a friction line (10). Annular pistons (5) and (13) are arranged either side of the cone (12).
Patent GB-1025319-A (GB)
Title: Reinforced protective pipe wrap material and method and apparatus for producing same and applying the material to pipe
IPC: B29C63/10
Filed: 1964-04-29
Abstract: 1,025,319. Pipe wrapping. OWENS-CORNING FIBERGLASS CORPORATION. April 29, 1964 [May 8, 1963], Heading F2P. [Also in Division B5] A laminated pipe-wrap material comprises parallel spaced strands or yarns of mineral fibres and a paper sheet with a matric of butuminous material (asphalt or coal tar) impregnating and coating the sheet material and the fibres, and a synthetic resin film, e.g. polypropylene, polyvinyl chloride and acetate and copolymers thereof, polyamides and other polyethylene resins, on one or both sides of the assembly, rendering it impervious to water but pervious to organic solvents. Before application to a pipe the latter is treated with a solvent release adhesive or primer comprising toluene, asphalt (coal tar pitch) and chloroprene rubber and the material is applied in a spiral path by a castered ring 70 carrying a spool 76 of the material and motivated in an appropriate manner.
Patent GB-874036-A (GB)
Title: Improvements in and relating to continuous casting
IPC: B22D11/128
Filed: 1958-06-05
Abstract: 874,036. Casting- machines. MANNESMANN A.G. June 5, 1958 [June 11, 1957; June 14, 1957], No. 18006/58. Class 83 (1). In a continuous casting plant, pairs of auxiliary conveying rolls 4, 5, 6 are interposed between the bottom of the mould 1 and the main conveying rolls 2 which are placed below the liquid core, and the starting bar 7 is slightly longer than the distance between succeeding pairs of rolls. The pressure exerted by a pair of auxiliary rolls on the starting bar is relieved when the bar becomes subjected to pressure by the succeeding pair of auxiliary rollers, so that no pressure is exerted upon the casting with a liquid core. The auxiliary rollers 15, 16, Fig. 2, are spring-urged towards the casting by springs 20 adjustable by hand wheels 21, and their distance apart may be increased by the thrust of pistons 22.
Patent GB-904227-A (GB)
Title: New phthalocyanine dyestuffs containing aminotriazine radicals
Inventor: CLARK PETER FREDERICK
IPC: C09B62/016
Filed: 1959-05-27
Abstract: The invention comprises metal-containing phthalocyanine dyestuffs which contain, attached to the 41-position of the benz rings of the phthalocyanine nucleus, at least one sulphonic acid group and at least one group of the formula:- <FORM:0904227/IV (b)/1> wherein Y is hydrogen, halogen, methyl or alkoxy, X is hydrogen or a sulphonic acid group, R1 is hydrogen or an alkyl or hydroxyalkyl radical containing 1 to 5 carbon atoms, R2 is hydrogen or an alkyl or hydroxyalkyl radical containing 1 to 5 carbon atoms or an alkenyl radical containing 3 or 4 carbon atoms and R3 is hydrogen, a hydroxyalkyl radical containing 1 to 5 carbon atoms or an alkenyl radical containing 3 or 4 carbon atoms.  The dyes which do not contain hydroxymethyl groups are made by heating together an appropriate amine and a phthalocyanine containing at least one group of the formula:- <FORM:0904227/IV (b)/2> where Z is chlorine or bromine and R6 has the meaning of R1 above except hydroxymethyl. When at least one of R1, R2 and R3 is hydroxymethyl, the dyes are made by treating the dyes where at least one of R1, R2 and R3 is hydrogen with formaldehyde.  The dyes dye, pad or print cellulose textiles such as cotton viscose rayon, regenerated cellulose and linen greenish-blue shades, preferably in the presence of a substance which yields a resin on heating and a substance which is acid or yields an acid on heating and then heating the material. Resin-forming substances are methylomelamine, methylolurea, acetals, epoxides and isocyanates and acid-liberating substances are ammonium dihydrogen phosphate, ammonium thiocyanate, zinc chloride, magnesium chloride, zinc nitrate and amine hydrochlorides.  In an Example (6) cotton cloth is passed through an aqueous solution containing a dye of the above type, a melamine-formaldehyde precondensate or 1 : 3-dimethylol-2-imidazolidone and ammonium thiocyanate, squeezed, dried and cured at 140 DEG C., and then heated in sodium carbonate and detergent solution, rinsed and dried.  Specification 805,562 is referred to.
Patent GB-810091-A (GB)
Title: Improvements in or relating to refining metal by electrodeposition
Inventor: GIBSON ALLAN ROBERT
IPC: C25C3/34
Filed: 1954-06-18
Abstract: 810,091. Refining refractory metals by electrolysis. UNITED KINGDOM ATOMIC ENERGY AUTHORITY. June 6, 1955 [June 18, 1954], No. 18041/54. Class 41. To refine the metals uranium, thorium, beryllium, cerium, niobium, zirconium, or their alloys, the impure metal or alloy is electrolysed in a fused salt bath containing a chloride of the metal or metals and one or more of the alkali metal and alkaline earth metal chlorides, using an inert anode conductor carrying the impure metal or alloy in electrical contact with it and applying between the anode and a cathode, preferably of the pure metal or metals to be deposited, a potential lower than that generated by a cell having the pure metal or metals as cathode and the anode conductor as anode. Preferably an inert atmosphere, e.g. of argon, is maintained over the fused bath. The refining may be effected in a cell 1 of sintered alumina having a non-gastight cover 2 with a feed port 3 and an inlet 4 for the inert gas. The inert anode conductor comprises a rod 5 and a plate 11 of graphite on which the impure metal is located at 12. The cathode comprises a graphite rod 7 into which is threaded a metal, e.g. uranium, rod 8 depending within a cup 10 of sintered alumina located on the graphite plate 11, the refined metal depositing in the bottom of the cup. Protective sleeves 6, 9 of inert refractory material surround the anode and cathode graphite rods above and just below the surface of the bath. Specifications 760,217 and 773,535, [both in Group II], are referred to.
Patent GB-184958-A (GB)
Title: Improvements in or connected with the ventilation of ships' holds or chambers
IPC: B63J2/10
Filed: 1921-07-04
Abstract: 184,958. Martin, F. G. July 4, 1921. Inlet and outlet ventilators, arrangements of; ventilating ships.-A ship's ejector ventilator comprises a trunk 1 having a mouth 2 of substantially the proportions shown in relation to the trunk and terminating in a nozzle 3 projecting into a tube 4 which extends rearwardly of the trunk. The ventilator is preferably arranged in the fore part of the ship, an inlet ventilator being provided at the other end of the hold with its mouth turned from the direction of sailing.
Patent GB-530880-A (GB)
Title: Improvements in or relating to the manufacture of bromobenzanthrones
IPC: C09B3/08
Filed: 1939-06-21
Abstract: 530,880. Bromobenzanthrones. DU PONT DE NEMOURS & CO., E. I. June 21, 1939, No. 18137. Convention date, June 21, 1938. [Class 2 (iii)] Bz-1-bromobenzanthrone and 6-Bzl-dibromobenzanthrone are made by reacting benzanthrone in an inert organic solvent, e.g. nitrobenzene, nitrotoluene cr a chlorinated benzene, with sufficient bromine to give the desired degree of bromination, the reaction being effected in the presence of sulphuryl chloride and, if desired, in the presence of a halogenation catalyst, e.g. iodine. The amount of bromine may be varied from that theoretically required (1 atom per mol. for the monobromo derivative or 2 atoms per mol. for the dibromo derivative) to approximately 15 per cent. excess. The sulphuryl chloride is preferably employed in molecular proportions relatively to the bromine for the monobrome derivative, and in excess of the molecular proportions for the molecular proportions for the dibromo derivative. Examples are given. Substituted benzanthrones with the Bz-1 position free, e.g. 2- or 6-methylbenzanthrone, may also be brominated by this process.
Patent GB-997299-A (GB)
Title: Improvements relating to the coating of semiconductor bodies with silicon dioxide
Inventor: NUTTALL ROY
IPC: C23C16/40
Filed: 1962-05-11
Abstract: A coating of SiO2 is produced on a semi-conductor body, e.g. Si, Ge, by heating the body in a stream of gases comprising an oxidizing gas, e.g. CO2, H2O vapour, and 2 or more gases (e.g. H2+SiCl4) which react to give silicon, and no other involatile products, such that SiO2 is deposited as glass.  In an example, a silicon body is heated to 1250 DEG  C. in a stream of CO2, H2, and SiCl4 (1 litre/min.) in the molar ratios 0.08: 1: 0.015.
Patent GB-628671-A (GB)
Title: Improvements in and relating to machines for the mining of coal and the like
IPC: E21C27/12
Filed: 1947-07-09
Abstract: 628,671. Coal &c. cutting-machines. BOLTON, A. July 9, 1947, No. 18168. [Class 68 (i)] The wheeled carriage of a mining- machine has projecting from one side a shaft e on which is secured a number of hubs f, each of which has formed therein a number of recesses. In each recess is pivotally mounted a pick g which on rotation of the shaft e flies outwards under centrifugal action to a position in which a shoulder g' on its shank makes contact with a stop f<SP>3</SP>. The pick then delivers a blow upon the buttock of the coal face and if unable to dislodge the coal the pick swings back into the recess clear of the face. Any dislodged coal is carried within the scoop shaped head g<SP>3</SP> and delivered on to a transverse scraper type conveyer j which delivers the coal to a face conveyer running between the wheels of the carriage. The depth of cut is limited by stop plates h which extend between each hub. The drive to the hub e and for the conveyer j is provided by the chain of the face conveyer passing over suitably positioned sprockets. The tension on the chain of the face conveyer as it passes over the guide sprockets on the carriage maintains the stop plates pressed against the face d<SP>1</SP>. In various modified forms the conveyer may be replaced by a shoot and the drive may be from electric motors, whilst a hub-bearing shaft may be provided at each end of the carriage. After each cut along the face the machine is moved up to the face by hydraulic jacks.
Patent GB-109715-A (GB)
Title: Improvements relating to the Drying of Hollow Articles.
Inventor: WILLIAMS EDWARD
IPC: F26B21/00
Filed: 1916-12-20
Abstract: 109,715. Williams, E., and Bunch, W. H. Dec. 20, 1916. Cylindrical articles, drying.-Hollow articles such as projectile shells are dried by placing them with the open end downwards on supports b and drawing or forcing heated air through them. In the arrangement shown, a hollow plate a is heated by gas burners i and air is drawn from or forced into the plate through pipes h. The air passes through openings f communicating with vertical tubes e which extend nearly to the bottom of the shells d. The supports are open at c to allow the passage of the air. A single plate may be used and the heating may be effected by steam, electricity, or otherwise.
Patent GB-497969-A (GB)
Title: Improvements in or relating to aircraft
IPC: B64C39/10
Filed: 1937-07-02
Abstract: 497,969. Tailless aircraft. HANDLEY PAGE, Ltd., and LACHMANN, G. V. July 2, . 1937, No. 18426. [Class 4] A tailless aircraft having a longitudinally stable main wing, i.e. in which the centre of gravity is located in front of the mean aerodynamic centre, is provided with a fore-and-aft trimming device constituted by a floating auxiliary aerofoil located in front of the centre of gravity of the aircraft and preferably in front of the leading edge of the main wing ; the aerofoil is freely pivoted about a span-wise axis disposed in front of its mean aerodynamic centre and is controllable by the pilot to vary its substantially constant angle of incidence. In one form, the auxiliary aerofoil 10 is arranged in front of and slightly above the leading edge of the main wing 11 and is carried on outriggers 12. The aerofoil is massbalanced and has a trimmer tab 14. The aerofoil has a constant positive pitching moment coefficient which is altered by mechanically or hydraulically adjusting the tab 14. In the latter case, pipes 17 are led through the pivot of the aerofoil 10 and supply fluid to a jack 15 pivoted in the aerofoil and connected to a horn 16 on the tab 14. If the wing 11 is provided with lift flaps, the operating-mechanism of the flaps may be interconnected so that the lift produced on the aerofoil 10 provides a pitching moment which balances that due to lowering of the lift flaps. In a modification, aerofoils 10 on either side of the aircraft are operatively connected through sprocket-and-chain gearing and a torque tube 24. A tab 14 on one aerofoil is adjustable manually through chain-andsprocket gearing bevel-wheels and a screwjack 30 from a hand wheel 32. The tab 14 on the other aerofoil is operated concurrently with flaps 19 through chain-and-sprocket gearing. More than two tabs may be provided. Specification 289,517, [Class 4], is referred to.