baber/WOPTO huggingface dataset:
Patent GB-479583-A (GB)
Title: Improvements in devices for re-setting razor blades
IPC: B24D15/10
Filed: 1937-05-29
Abstract: 479,583. Sharpening razor blades. CITY CONSTRUCTION CO., Ltd., and PATERSON, J. May 29, 1937, No. 14992. [Class 60] A device for use in resetting safety razor blades on a concave surface, for example, the inner curved surface of a tumbler, comprises a holder 1 formed with studs 2 to engage the holes in a double-edged blade 3 and displaceable longitudinally on a backing-member 4 having finger holes 11 therein and provided with upstanding edges 5, which in operation, engage the curved surface and limit the bending of the blade. In order to adjust the amount of bending, the adjacent surfaces 9, 10 of the holder 1 and the member 4 are tapered so that by longitudinal displacement of the holder 1 on the member 4, the height of the edges 5 relatively to the blade may be adjusted ; the holder 1 is locked in adjusted position by a screw 6 and a nut 7. In a modification, Fig. 6, the blade holder 1 is adjustable relatively to the edges 5 by means of a cam 15 on a spindle 6 rotatable in the backing-member 4, the spindle being locked by a nut engaging a screwed part of the spindle, and being provided with a pointer movable over a scale on the member 4 ; springs 24 press the holder 1 against the cam. In a further modification, the cam engages in a, yoke forming an extension of the holder 1. The device may be formed as a single member without adjustability, and the holder 1 may be formed to receive single-edged blades ; the member 4 may have a part 12 to engage the edge of the tumbler ; the holder may be formed as a permanent magnet.
Patent GB-355319-A (GB)
Title: Method of and apparatus for transmitting pictures
IPC: H04N3/32
Filed: 1930-05-15
Abstract: 355,319. Television; copying telegraphy. THUN, R., 57, Waldstrasse, Schoneiche, Post Fichtenau, Germany. May 15, 1930, No. 15034. Convention date, May 18, 1929. [Class 40 (iii).] The fineness of scanning is varied automatically in accordance with the character, or fineness of detail, of the portion of the picture scanned at any instant. The speed of scanning may be influenced by the frequency of the current variations set up in the circuit of the photo-electric cell, or, since fineness of detail is usually associated with the lighter parts of the picture, the speed of scanning may be controlled by the lightness of the portion of the picture being scanned, and in the case of a film by the use of a control band having pictures corresponding (but with less definition) to the film to be transmitted. The picture may be reconstituted at the receiver solely due to the variation in the speed of scanning, light of constant intensity being used. In the system shown in Figs. 1 and 2, a motor 71 moves the film 1 past a slot in a plate 29 and causes a magnet-wheel 10 to induce currents in a coil 9 in circuit with the photo-electric cell 8 and an amplifier 13. The amplified impulses pass to the receiving station and also to an oscillograph which causes a scanning mirror 6 to reflect light from source 4 on to the film 1. When relatively dense portions of the film, corresponding to light portions of the original, are being scanned, the resistance of the cell 8 reduces the current in the oscillograph, so that the mirror 6 moves slowly and the scanning is fine. When light portions of the film are scanned, the mirror 6 moves quickly and the scanning is coarse. In a modification, the speed of the film may also be varied in a similar manner, or by arranging that the reaction of the current induced in coil 9 influences the speed of the motor 11. At the receiving station, the currents (of constant frequency determined by the wheel 10) cause a synchronous motor 25 to rotate a disc carrying lenses 20 which control one component of the scannings. The currents also cause an oscillograph to move a mirror 19 at a speed (corresponding to that of the mirror 6) determined by their strength, so as to reflect light from the source 16 on the screen 23 through a lens 20 arranged so that a complete picture is reproduced during its movement beneath the mirror 19.
Patent GB-823316-A (GB)
Title: Improvements in or relating to needle bearings
IPC: F16C33/54
Filed: 1957-05-13
Abstract: 823,316. Roller bearings. PITNER, A., and ROULEMENTS A AIGUILLES S.A. DES. May 13, 1957 [May 11, 1956], No. 15063/57. Class 12 (1). A needle roller bearing cage comprises axial bars 6 between which rollers 5 are located, the bars being integral with end rings 9 which are adapted to underlie annular plates 10 secured to the outer race 1 thereby allowing the ends of the rollers 5 freedom to contact the plates 10. The annular plate 10 is located in a recess in the outer race 1 by a ring member 12. The bars 6 are of square cross-section. In a modification, the centre parts 26, Fig. 4, of the bars lie in a circle of reduced diameter and the bars are bent outwardly at 28 near each end. In a further modification, the sides 37 of the bars 36 are curved as shown in Fig. 9 so that the distance e is less than the diameter of the rollers. Alternatively, projections 47, Fig. 10, are provided on the inner edges of bars 46. The rollers 35, shown in Fig. 12, have conical ends 39 which are adapted to overlie end rings 40 of the cage.
Patent GB-1350922-A (GB)
Title: Levitated vehicle system
IPC: B65G53/18
Filed: 1971-05-14
Abstract: 1350922 Transport systems UNIFLO SYSTEMS CO 14 May 1971 [15 May 1970] 15090/71 Heading B7L [Also in Divisions F2 and B8] A levitated vehicle system comprises a track 10 fitted with valves 11 each comprising a housing 36 in which a main through flow passageway 40 is defined by a wall of the housing and an opposed flexible diaphragm 41. The diaphragm is operable to open and close the passageway by fluid pressure supplied to or exhausted from, the rear side thereof. The system employs a vehicle 25, e.g. for carrying baggage in an airline terminal or goods in a warehouse. This vehicle has a flexible skirt 27 enclosing an air space over a track 12, 13 in which rows of the valves 11 are installed to supply air from a plenum chamber 15 through an outlet nozzle 31 of the passageway 40, arranged so that the air flow from the nozzles drives the vehicle forward by inpingement on the skirt. A pilot diaphragm valve 46 is operative selectively to place the rear side of the main diaphragm 41 in communication with the upper surface of the track, through passages 44, 60, or to isolate these passages, in response to a control pressure supplied to the diaphragm valve by pipes 21, 22 and control chambers 17B below the chamber 15. Passage 44 adjacent the near side of the main diaphragm, is in permanent communication with the chamber 15 through a restricted opening (45), Figs. 5 and 6 (not shown). The pressure in the plenum chamber 15 will normally be about 2lbs/sq. inch above atmospheric pressure. In use, the control pressure may be arranged so that the main valve opens automatically when a vehicle arrives over the valve, the pressure under the vehicle being about 10lb/sq. inch and acting through passage 60 on the pilot valve diaphragm. This diaphragm has a sealing lip 57A formed by a re-entrant conical blind hole in the diaphragm, and which obturates the end of the passage 44. Alternatively, non-automatic operation may be arranged by an external control means which sets up control pressure signals to open and close the valves selectively in groups, e.g. to vary the forward speed of the vehicle. The valve has a lipped flexible cone 52 which seals round an opening 20 from the control chamber. The valve body has a bayonet joint connection with an interrupted flange 34 on the track. The valve body may be of plastics material.
Patent GB-1018988-A (GB)
Title: Process for obtaining tetrahydro rauwolfia alkaloids
IPC: C07D491/22
Filed: 1964-04-13
Abstract: The invention comprises a process for the production of the Rauwolfia alkaloids tetra-hydro-alstonine and/or ajmalicine or mixtures thereof and of their salts which comprises distribution, within a substantially neutral pH range, between water and an organic solvent that is at most partially miscible with water, of plant material of the Rauwolfia species or extracts thereof containing the Rauwolfia alkaloids belonging to the group of the anhydronum bases; followed by hydrogenation of the content of the aqueous phase with a suitable hydrogenating agent, for example sodium borohydride, and isolation from the hydrogenation mixture of tetrahydro-alstonine and/or ajmalicine or mixtures or salts thereof.  Prior to the above process the plant material may first be freed from secondary and tertiary alkaloid bases by extraction with an organic solvent that is at most partially water miscible, e.g. halogenated aliphatic hydrocarbons such as chloroform, ethylene chloride, methylene chloride or trichloroethylene, also ethyl acetate or aromatic hydrocarbons such as benzene or toluene.  Furthermore the plant material may be freed from its fat content, for example by extraction with petroleum ether.ALSO:A pharmaceutical preparation having adrenolytic properties comprises tetrahydroalstonine or a physiologically tolerable acid addition salt thereof in admixture with a pharmaceutically suitable carrier, optionally with the addition of one or more other therapeutically useful substances, for enteral or parenteral administration or for addition to animal fodder.  Salts specified include those with ascorbic, salicyclic and p-aminosalicyclic acids, methionine, tryptophane, lysine and arginine.
Patent GB-202748-A (GB)
Title: Improvements in or relating to hooks for fixing wire netting and for general use
IPC: F16B15/00
Filed: 1922-05-30
Abstract: 202,748. Downs, S., and Young, W. T. May 30, 1922. Hooks fixed to flat surfaces. - Spikes c and the hook-member b are cut out of a rectangular blank, the hook being curved wholly upwards. Specification 5890/93, [Class 52. Furniture &c.], is referred to.
Patent GB-368151-A (GB)
Title: Improvements in or relating to devices for opening and closing windows, shutters andthe like
IPC: E05F11/00
Filed: 1931-05-22
Abstract: 368,151. Window fastenings. QUICK, .W., 2, Tudor Way, Gunnersbury Avenue, London, THOMAS, S. E., Tregarth, Bath Road, Cranford, Hounslow, Middlesex, and BERWICK, F. W., 53, Drewstead Road, Streatham Hill, London. May 22, 1931, No. 15189. Addition to 322,065, [Class 44, Fastenings, Lock &c.]. [Class 44.] A window fastener for use with a window regulator as described in the parent Specification comprises pawls k on a hand-operated spring-pressed rocking shaft c, said pawls being adapted to engage racks fixed to the frame.
Patent GB-1383693-A (GB)
Title: Method of producing offset lithographic printing plates
IPC: G03F7/06
Filed: 1972-03-30
Abstract: 1383693 Photo-lithography MITSUBISHI PAPER MILLS Ltd 30 March 1972 [30 March 1971] 15235/72 Heading G2C An offset lithographic printing plate is prepared by the photographic silver complex salt diffusion transfer process using (i) a plate containing an image-receiving layer comprising 110 parts by wt of physical development nuclei and optionally up to 30 parts by wt of a high-mol wt binder, and (ii) a developer solution containing a developing agent, a silver halide solvent and at least one compound of one of the formulae: - (in which R 1  and R 4  are each 1-5C alkyl; R 2  is H, alkoxy or 1-5C alkyl; R 5  and R 3  are each 1-5C alkyl or optionally substituted aryl; X is 0, S or N(R 4 ); Y is 0, N(NH 2 ), N(NHCOR 5 ) or NR 5 ).
Patent GB-1005917-A (GB)
Title: Semiconductor devices
Inventor: HILSUM CYRIL
IPC: H01L29/00
Filed: 1961-04-27
Abstract: 1,005,917. Semi-conductor devices. NATIONAL RESEARCH DEVELOPMENT CORPORATION. April 26, 1962 [April 27, 1961], No. 16263/61. Heading H1K. A semi - conductor device comprises a laminar of semi-insulating GaAs having a resistivity greater than 10<SP>5</SP> ohm/cm. with a metal contact on one face and a layer of semi-conductor containing a PN junction on the other and an electrically conducting spike extruding between the contact and the semi-conductor material. The high resistivity material may be obtained by floating zone refining or by heating in oxygen to 1100 C. for 12 hours. Fig. 7 shows a P-type layer s of semi-conductor such as gallium arsenide or germanium produced by epitaxial deposition on the laminar e of semi-insulating gallium arsenide. The deposition may be effected by using iodine vapour or a saturated solution of gallium arsenide in gallium; zinc may be added to the gallium arsenide to render it P-type. A pellet of tin or antimony-tin is then alloyed to the centre of the P-type layer to form an N-type region and the heating is continued until the metal forms a stalk g extending right through the insulating gallium arsenide to contact metallic layer f. This penetration may be assisted by crystal orientation, ´ndueed dislocations such as by ultrasonic machining, heating by electric current or first boring a hole through the material. The PN junction region is then etched to provide a cut-away portion as shown. An ohmic contact h is provided to the P-type layer s. The arrangement may be adapted for coaxial fitting as shown in Fig. 8. Fig. 9 shows an attractive arrangement in which a goldplated molybdenum plate f is provided with a spiked portion g which contacts the alloy pellet a.
Patent GB-552695-A (GB)
Title: Improvements relating to the stopping of high-compression internal-combustion engines
IPC: F01L13/08
Filed: 1941-11-27
Abstract: 552,695. Stopping. SANDERS, A. F. Nov. 27, 1941, No. 15282. [Class 7 (v)] For stopping a high-compression engine, the combustion spaces 23 are vented by poppet valves 21, the stems of which coact with cam grooves 26 in a rod 27 moved axially by means which serve to discontinue the fuel supply while the valves are held open. As shown, the rod 27 is moved by one arm of a lever 13 actuated by a Bowden cable 12, the other arm of the lever being linked to an arm 15 acting on the control member 16 of fuel pumps 17. The head of the valve 21 may be shaped to conform to the curvature of the combustion space 23, and the valves may open into a closed space 24.
Patent GB-386211-A (GB)
Title: Foot swimming appliance
IPC: A63B31/14
Filed: 1932-05-30
Abstract: 386,211. Swimming appliances. BRASSEL, E., St. Margrethen, St. Gallen, Switzerland. May 30, 1932, No. 15329. [Class 77.] A propelling device for use in swimming comprises a sole 1 which is fixed to the foot and a web 8 surrounding the sole and connected by spring-loaded clamping straps 5 to hinge parts 4 projecting from the edge of the sole. The lower of each pair of straps 5 is hinged at 6 to the part 4. The spring 7 normally holds the web in the plane of the sole, the inner end of the strap then abutting against a block on the part 4. Rubber protecting bands 9 surround part of the straps 5.
Patent GB-186958-A (GB)
Title: Improvements in or connected with extensible tables
IPC: A47B1/08
Filed: 1921-06-03
Abstract: 186,958. British & Foreign Industrials, Ltd., and Cooklin, I. June 3, 1921. Telescopic and expanding tables.-An extensible table has inner slides 5 attached to the centre portion 2 and outer slides 3 attached to the end portions 1, on which two leaves 10 may occupy a stowed position from which they may be raised into position in the table. Upon separation of the ends in the usual manner, the leaves are drawn outwards by links 20 pivoted to the ends of the table having pins 22 engaging in slots 23 in bars 16 on either side of the leaves, and are raised by the engagement of inclines on the bars 16 with blocks 17 on the inner slides 5. In lowering the leaves, they are separated from the end portions upon preliminary opening bv the striking of projections 15 on the outer slides 3 against stops on the leaves. A flange 11 is provided at either side of the leaves to correspond with a similar flange on the table, and depends from a pivoted part 24 so that it may be folded downwards in the stowed position.
Patent GB-149114-A (GB)
Title: Improvements in and relating to illuminating or signal projectiles
IPC: F42B12/62
Filed: 1919-06-19
Abstract: 149,114. Darling, R. A. June 19, 1919. Pyrotechnic devices and compositions.-Relates to projectiles which expel a parachute flare during flight, and consists mainly in causing the expulsion by the gases generated by the flare composition instead of by a separate explosive charge. In the form shown, a time fuse 13 vented by holes 30 causes a plunger 32 situated in a partition 28<a> to be driven against a primer 33 for igniting a flare 18. The gases generated by the flare dislodge a covering disk 20 from the mouth of the flare casing 17 and eject the flare and the parachute 24 through the rear end of the shell 10, the base 14, previously retained by pins 15, 16 being simultaneously blown off. The parachute is arranged against a spring 34 in a split casing 23 which, with the help of the spring, opens out and releases the parachute. Several parachutes in tandem fashion may be used. Gas checks 25 are interposed between the open front end of the parachute casing 23 and the base of the flare casing 17. The parachute is connected to the flare by a swivel 26. The flare composition is compressed into a casing 17 which tapers inwardly towards its mouth and is internally screw-threaded to grip the composition firmly. A suitable flare composition contains barium nitrate 16 lbs. 14 oz., magnesium 6 lbs. 10 oz., ammonium perchlorate 2 oz., linseed glue 1 lb. 5 oz., and sodium carbonate 2 oz. To facilitate ignition, a small charge of black powder is provided at the ignition point, or the composition is packed more loosely at that point. In modifications, (1) a ball-bearing is provided for the swivel; (2) the plunger 32 and primer 33 are omitted and the flare ignited directly by the time fuse; and (3) the partition 28a is omitted.
Patent GB-380408-A (GB)
Title: Improvements in or relating to non-skid chains for vehicle wheels
IPC: B60C27/06
Filed: 1932-05-31
Abstract: 380,408. Tyre gaiters. BORBRIDGE, E. W., Peterborough, Ontario, Canada. May 31, 1932, No. 15445. Convention date, June 10, 1931. [Class 144 (ii).] In a tyre gaiter comprising cross-chains 13, with or without a diagonal chain 14, connected by end-pieces 11, 12, one of the end members is formed with a buckle 19, 20 to receive a fastening-strap 10 attached to the part 12. The parts 11, 12 may be formed from stiff wire or stamped metal.
Patent GB-544514-A (GB)
Title: Improvements in or relating to photographic papers
IPC: G03C1/775
Filed: 1940-10-21
Abstract: 544,514. Photographic paper. KODAK, Ltd. (Eastman Kodak Co.). Oct. 21, 1940, No. 15526. [Class 98 (ii)] A paper sheet has a coating of a dispersion of barium sulphate in a water-susceptible lower fatty acid ester of cellulose. The paper sheet may then be coated with a silver halide emulsion in a binder such as gelatine or the hydrolyzed organic esters of cellulose, for example cellulose acetate, cellulose acetate propionate, and cellulose acetate butyrate, and polyvinyl alcohol, and the emulsion may contain a sensitizing dye. The dispersion may be prepared by incorporating barium sulphate in a solution of a farhydrolysed cellulose ester, such as cellulose acetate, dissolved in a mixture of an organic solvent and water, and may be applied in one or more coats. A far-hydrolyzed cellulose acetate having an acetyl content of between 19 and 30 per cent, or a similar cellulose acetate propionate or cellulose acetate butyrate, having an acyl content of between 17 and 30 per cent, may be used. With emulsions using cellulose esters as binder, the cellulose esters in the baryta coating should correspond as regards acetyl content. Acetone or a water-soluble aliphatic monohydroxy alcohol such as methyl, ethyl, n-propyl, or isopropyl alcohol may be used as solvent, and a high boiling solvent such as ethylene glycol, monomethyl or monoethyl ether may be added. In example (1), the coating composition is prepared by adding a dispersion of blanc fixe in ethyl alcohol and water to a solution of cellulose acetate hydrolysed to an acetyl content of 25 per cent in ethyl alcohol and water while stirring. The mixture is added to a further solution of cellulose acetate, and then coated on a high alpha cellulose paper, In example (2), a dispersion of blanc fixe in acetone and water is added to a solution of cellulose acetate propionate hydrolyzed to an acetyl content of 17 per cent and a propionyl content of 9 per cent in acetone and water, and after thorough stirring the mixture is added to a further solution of cellulose acetate propionate. Specifications 515,732, 525,085, [Group IV], 527,283, 531,579 and 542,704 are referred to. The Provisional Specification refers also to Specification 542,703.
Patent GB-783128-A (GB)
Title: Improvements in or relating to thermostatically controlled gas fired water heaters
Inventor: CHAPMAN FREDERICK WALTER
IPC: F24H9/20
Filed: 1955-05-31
Abstract: 783,128. Controlling gas burners. MAIN WATER HEATERS, Ltd. Dec. 7, 1955 [May 31, 1955], No. 15625/55. Class 75(1) [Also in Group XIII] In a gas-fired instantaneous water heater in which water flows through a sinuous externally finned pipe heated by a gas burner controlled by a thermostat, the heat responsive element 30 of the thermostat is disposed in the finned pipe. The element is a cylindrical bulb connected by a capillary tube 32 to a bellows 33 operating the gas valve. The Provisional Specification states that the heat responsive element is arranged about half-way along the finned pipe, where the temperature is midway between its initial and final temperatures. It also describes an instantaneous or storage water heater in which a small burner additional to the main burner may heat the part of the pipe containing a heat-responsive element. When the water is stagnant and the main burner shut off, the element is heated enough through the stagnant water to close the main gas valve. As soon as the water supply is turned on, it cools the element enough to open the main gas valve The small burner may also heat a second heat-responsive element actuating a gas valve in series with the first, so that if the small burner goes out the gas supply to the main burner is cut off.
Patent GB-744185-A (GB)
Title: Polymerisation process
IPC: C08F14/06
Filed: 1953-06-05
Abstract: Polymers of monomers of the formula <FORM:0744185/IV(a)/1> where X is hydrogen or halogen are made by polymerizing the monomers alone or with another monomer in aqueous alkaline dispersion in the presence of a soap emulsifying agent and a redox catalyst, at a temperature of -15 DEG  C. to 30 DEG  C. and in the absence of polymerization modifiers, and when the polymerization is effected below 0 DEG  C., utilizing a monohydric alcohol as the antifreeze ingredient.  The halogen-containing monomer may be vinyl chloride or vinylidene chloride.  Specified other monomers are vinyl acetate, acrylonitrile, glycidyl methacrylate and mixtures.  The oxidizing portion of the redox system is an organic peroxide of the formula ROOR1, where R may be alkyl, aryl, acyl, aralkyl, or cycloalkyl and R1 may be hydrogen, alkyl, acyl, aralkyl or cyclo-alkyl.  Peroxides mentioned are cumene, hydroxy cyclohexyl, t-butyl, triisopropylbenzene, para-menthane, meta- and para-diisopropylbenzene hydroperoxides and meta- and para-alpha-hydroxy, alpha1-hydroperoxy diisopropylbenzene, benzoyl peroxide, t-butyl perbenzoate and mixtures.  The reducing part of the redox system is a non-ionic organic reducing agent containing at least one hydroxyl group such as monohydroxy and dihydroxy acetone, dextrose, glucose, levulose, sorbose, fructose and invert sugar.  The system may also contain compounds of metals such as iron, cerium or osmium which can exist in at least two oxidation states.  The polymerization systems may also include other ingredients such as potassium pyrophosphate and potassium chloride which form complexes with the metal ion and/or reduce the fluidity and increase the stability of the latex. Potassium myristate is the exemplified soap.