baber/WOPTO huggingface dataset:
Patent GB-441602-A (GB)
Title: Free wheel hub with interchangeable sprockets and roller bearings
IPC: B62M9/10
Filed: 1935-08-20
Abstract: 441,602. Free-wheel and variablespeed hubs for cycles. DUBAN, M., 152, Rue Du Onze Novembre, Saint-Etienne, Loire, France. Aug. 20, 1935, No. 23418. Convention date, Aug. 23, 1934. [Class 136 (ii)] A free-wheel cycle hub, provided with sprockets of different sizes for variable-speed. chain gearing and with one or more roller bearings, comprises a hub body 1 provided with an axial extension 2 supporting internally a roller bearing 3 and externally a member 8, which is screwed on the extension 2 and is provided with a collar 9 supporting the freewheel pawls and forming a race for the inner of two spaced ball bearings 11, 12 on which a driving member 10 is mounted. The pawls are engaged by a ratchet ring 15 screwed on the member 10. The outer bearing 12 is provided with an adjustable cone 13 screwing on to the member 8. The driving member .10 is of polygonal section externally, for the reception of spaced sprockets 16, which are interchangeable and are secured by a nut 17.
Patent GB-1017728-A (GB)
Title: Apparatus for indicating and controlling the magnitude of a physical variable
Inventor: CULLEN GRAEME EYRES
IPC: G01K7/14
Filed: 1963-06-12
Abstract: 1,017,728. Indicating-apparatus; reading instruments photo-electrically. S. SMITH & SONS (ENGLAND) Ltd. Sept. 8, 1964 [June 12, 1963], No. 23435/63. Headings G1A and G1J. [Also in Division G3] In indicating and control apparatus wherein a galvanometer pointer 13, 15 moves a vane 17 between a lamp 18 and a photo-cell 19 to generate a control signal of progressively changing magnitude as a variable passes through a selected range of values, the lamp 18 and photo-cell 19 are mounted on a disc 23 on a setting arm 36, the arm 36 being movable to select the position of and the disc 23 being rotatable to change the extent of the range of values. A disc 20, carried by the disc 23 in a position between the lamp 18 and the path of the vane 17, has a slit 21, allowing light to pass to the cell 19. When the arm 36 is turned to press a pin 35, protruding from the disc 23, against a stop 38 continued movement causes the disc to rotate towards a vertical position thus narrowing the range over which the vane 17 affects the passage of light from the lamp 18 to the cell 19. When the arm 36 is turned the opposite way and the pin 35 encounters another stop 37 continued turning rotates the disc back towards the position in which the slit 21 is horizontal. At the same time the pin 35 works in a slot in a lug 33 upturned from an extension of an arm 27 in a lazy-tongs system 27, 28, 31, 32 and thus the relative position of pointers 14 on the arms 27, 28 correspond to the angular setting of the disc 23 and thus to the range of values influenced by the vane 17. The lamp and photo-cell sensing device may be replaced by an oscillator which is de-tuned by the passage of a vane close to one of the impedance elements in its tuned circuit.
Patent GB-518217-A (GB)
Title: Improvements in and relating to electric lighting fittings
IPC: F21V7/04
Filed: 1938-08-09
Abstract: 518,217. Luminairs. GENERAL ELECTRIC CO., Ltd., and HUBBOLID, S. Aug. 9, 1938, No. 23459. [Classes 75 (ii) and 75 (iv)] An electric lighting fitting for shop display counter illumination comprises an elliptical reflector 1 directing light from a source located at one focus 6 through an aperture 10 or clear portion of an indirectly illuminating reflector 7. The clear or apertured portion 10 of the reflector 7 has a diameter or width less than the maximum diameter or width of the elliptic reflector and is arranged near the other focus 9 of the elliptic reflector. A flared extension 11 may be provided at the aperture 10, and upwardly flared cover 2 may enclose the lampholder 3. The lamp, bulb 5 may be arranged horizontally.
Patent GB-884987-A (GB)
Title: Apparatus for protecting the delivery pipes of pumping plants
IPC: E03B7/07
Filed: 1960-07-05
Abstract: 884,987. Pumping systems. SULZER FRERES S.A. July 5, 1960 [Aug. 24, 1959], No. 23504/60. Class 68(1). To allow of the protection of a delivery pipe 5 of a pumping plant against negative pressure on failure of the pump 2 there is fitted to the delivery pipe 5 one or more non-return valves 7 connected to a source 9 of compressed air at a pressure greater than atmospheric pressure.
Patent GB-789693-A (GB)
Title: Unsaturated aldehydes, acetals and ether acetals and a process for the manufacture thereof
Filed: 1955-08-16
Abstract: The invention comprises 4-[21,6,61-trimethylcyclohexen - (21) - ylidene - (11)] - 2 - methyl - buten - (2) - al - (1).  4 - [21,61,61 - Trimethylcyclohexylidene - (11)] - 2 - methyl - buten - (2) - al-(1), and the corresponding substance having a double bond in the 21,31-position.  They are produced by a process comprising acetalizing iso- or retrodehydro-C11 aldehydes, which have the formula R=CH-CH=O, wherein R stands for 2,6,6-trimethyl-cyclohexylidene- or the corresponding radical in which there is a double bond in the 2,3-position, by treatment with an orthoalkanoic acid alkyl ester in the presence of an acidic agent, reacting the resulting 2[21,61,61-trimethyl - cyclohexylidene - (11)] - 1,1 - dihydroxy ethane diether or the corresponding compound having a double bond in the 21,31-position (iso- and retrodehydro-C11-acetals) in the presence of an acidic agent and heating the 4 - [21,61,61 - trimethyl - cyclohexylidene - (11)] - 2 - methyl - 1,1,3 - trihydroxy butane triether or the corresponding compound having a double bond in the 21,31-position (iso- and retrodehydroether acetals) with an acid.  The acetalization is carried out with, e.g., methyl, ethyl or butyl orthoformate in the presence of boron trifluoride, zinc chloride, ammonium nitrate, phosphoric acid or p-toluenesulphonic acid.  In the second stage methyl-, ethyl- or butyl propenyl ether may be employed in the presence of boron trifluoride etherate, zinc chloride, ferric chloride or tin tetrachloride.  In the final stage of the process p-toluene sulphonic, acetic, propionic, oxalic, sulphuric or phosphoric acid, or watersoluble salts of acid reaction, e.g. zinc chloride or sodium hydrogen sulphate may be employed.  Water-miscible solvents, e.g. dioxane, tetrahydrofurane, ethylene glycol or dimethyl ether may be employed.  Dilute phosphoric acid in the presence of such a solvent or acetic acid in the presence of an alkali-metal acetate and water are preferred.  In examples: retrodehydro-C11-aldehyde is converted to the acetal with orthoformic ethyl ester in the presence of phosphoric acid and ethanol, the acetal is converted to retrodehydro-C11-ether acetal by treatment with propenyl ethyl ether in the presence of zinc chloride and ethyl acetate and the ether acetal is heated with glacial acetic acid, sodium acetate and water in the presence of hydroquinone to obtain retrodehydro-C14-aldehyde. Iso-C14-aldehyde is similarly obtained from iso-C11-aldehyde.  The iso- and retrodehydro-C11-aldehydes are prepared respectively from 2,6,6-trimethylcyclohexanone-(1) or 2,6,6-trimethyl-cyclohexen-(2)-one-(1), by condensation with ethoxy acetylene, reducing the triple bond to a double bond in the carbinol obtained by hydrogenation and hydrolysing and dehydrating the compound obtained by treatment with an acid. Specification 719,450 is referred to.
Patent GB-1255750-A (GB)
Title: Silver halide stabilising compositions
Inventor: CASE NELSON SEELEY
IPC: G03C5/39
Filed: 1969-05-08
Abstract: 1,255,750. Silver halide stabilizing compositions. EASTMAN KODAK CO. May 8, 1969 [May 8, 1968], No.23552/69. Heading G2C. A developed photographic silver image stabilizing composition comprises a silver halide complexing agent and adipic acid or succinic acid. The composition may also contain an adipic acidadipate or succinic acid-succinate buffer, a minor amount of sulphite, toning agents such as mercapto azoles or an inorganic sequestering agent. The silver halide complexing agent is preferably ammonium thiocyanate or an alkali metal thiocyanate. The composition preferably comprises an aqueous solution. The stabilizing composition may be used in rapid access processing where the developing agent is in the material and the exposed material is treated with a development activator until the desired image is developed and thereafter contacted with a stabilizing composition. The stabilizing compositions are of high buffer capacity, free from odour, stable, of reasonable cost and do not contribute objectionably to final print tackiness.
Patent GB-1299870-A (GB)
Title: Improvements in or relating to electroluminescent display devices
Inventor: BYATT DENNIS WILLIAM GEORGE
IPC: H05B33/12
Filed: 1969-05-08
Abstract: 1299870 Electroluminescence MARCONI CO Ltd 21 Jan 1970 [8 May 1969] 23556/69 Heading C4S [Also in Division G5] An electroluminescent display device comprises superimposed layers of electroluminescent and semi-conductor material between two sets of crossed conductors A 1  A 2  A 3  ... An, B 1  B 2  B 3  ... B n , the layers being continuous sheets or matrices of discrete elements, the semi-conductor material having a high resistance when a low voltage is applied and a low resistance when a voltage above a critical value is applied, means 3 for applying a first voltage between a selected conductor in each set sufficient to maintain but not produce luminescence and means S for applying a supplementary voltage pulse which superimposed on the first voltage produces luminescence. The voltage pulses are applied via distributor switches SA, SB to produce scanning of the device. The source S applies A.C. or D.C. potential, if D.C. is used a pulse of opposite polarity will extinguish luminescence. The semi-conductor may be a chalcogenide glass.
Patent GB-891641-A (GB)
Title: Improved implement for scarifying and scraping the ground
IPC: A01B35/00
Filed: 1960-07-06
Abstract: 891,641. Agricultural implements. MASSEYFERGUSON Inc. July 6, 1960 [Aug. 5, 1959], No. 23569/60. Class 6(1). An implement for scarifying and scraping the ground arranged to be connected to a tractor hitch linkage 12, 16 comprises a scraper blade 40 connected by a linkage 51, 71 to a tool bar 20 which carries a set of side by side scarifier blades 35 and which is attached to the hitch linkage 12, 16. As shown the scraper 40 is provided with end panels 45 and a frame member 47 to which is pivoted a latch member 80 provided with notches 85, 86 which engage a pin 87 in the upper link 71, the arrangement being that with the pin 87 engaged in the upper notch 86 the scarifier blades 35 are raised clear of the ground while the scraper blade still engages the ground.
Patent GB-662911-A (GB)
Title: Improvements in and relating to laminated core constructions of electric induction apparatus
IPC: H01F38/10
Filed: 1949-09-13
Abstract: 662,911. Transformers and inductances; supply systems for space discharge lamps. BRITISH THOMSON-HOUSTON CO., Ltd. Sept. 13, 1949 [Sept. 23, 1948], No. 23608/49. Classes 38 (ii) and 38 (iv). A choke which also functions as a transformer and particularly suitable for use with an electric discharge device comprises a laminated core composed of a plurality of members, at least one coil mounted on one of the members, and the members magnetically coupled and mechanically clamped together by straight strips of magnetic material wedged between the coil and cone members. As shown, the core may comprise two E-shaped members 4, each carrying a coil 7, 8 and separated by an I-shaped member 5 with air gaps 9 provided, the coils being coupled and the members clamped together by a strip of magnetic material 6 on each side of the core, each having flared portions 11 at the ends and centre to facilitate assembly. When used in conjunction with a discharge device, particularly a germicidal lamp 2 comprising an anode 15 and a filamentary cathode 13, preheating current passes through the coil 7 when switch 12 is closed and a voltage is induced in winding 8 to increase the potential of anode 15 to facilitate starting. Ballasting is effected whilst the lamp is running by winding 8 when switch 12 is opened.
Patent GB-1393795-A (GB)
Title: Set of transfer symbol assemblies
IPC: B44C1/16
Filed: 1972-05-19
Abstract: 1393795 Transfers OMNISCREEN BV 19 May 1972 [19 May 1971] 23756/72 Heading B6C In a set of transfer symbol assemblies for applying to a surface each assembly comprises a symbol cut from a foil, a carrier foil 4 for temporarily supporting the symbol and a cover foil 5 for temporarily covering the symbol, a side of the symbol remote from the cover foil being coated with adhesive. The cover foil has straight upper and lower parallel edges 7, 6 and a side of the cover foil facing the carrier foil is coated with adhesive by means of which the cover foil is removably adhered to the carrier foil and the symbol is removably adhered to the cover foil. The distance between the upper and lower edges is the same for all the cover foils. The symbols include lower case letters of the same basic height, all the letters being similarly positioned with respect to their associated cover foils relative to the upper and lower edges of the cover foils. The cover foil of each assembly has a portion not covering the symbol and extending from one of the said parallel edges thereof towards the other parallel edge over the entire extent of the cover foil in the direction parallel to said parallel edges for a distance at least equal to half the basic height of said letters.
Patent GB-1163803-A (GB)
Title: Preparation of 4-substituted thiazoles
Inventor: WILDMAN GEORGE THOMAS
IPC: C07D277/22
Filed: 1967-05-23
Abstract: 1,163,803. 4-Substituted thiazoles. MERCK & CO Inc. 23 May, 1967 [31 May, 1966], No. 23849/67. Heading C2C. Substituted thiazoles of formula in which R is a C 1 -C 5  alkyl group are treated with hydrogen at elevated temperature in the presence of nickel oxide, nickel sulphide, cobalt oxide or cobalt sulphide to produce 4- substituted thiazoles of formula preferably the catalyst contains a small proportion of zirconium and is supported on a neutral carrier.
Patent GB-533521-A (GB)
Title: Improvements in or relating to methods of thickening latex, and to thickened latex compositions produced thereby
IPC: C08C1/02
Filed: 1939-08-18
Abstract: 533,521. Rubber latex. FIRESTONE TYRE & RUBBER CO., Ltd. Aug. 18, 1939, No. 23860. Convention date, Aug. 19, 1938. [Class 70] Rubber latex which is substantially free from ammonia or the ammonia content of which has been reduced to less than 0.5 per cent. is thickened by adding a stabilizing agent and then a small amount of a fat derived acid such as oleic or stearic acid. The stabilizer may be the commercial product known as Aquarex D which is the sodium salt of the sulphate ester of a mixture of higher fatty alcohols consisting chiefly of the lauryl and myristol derivatives, or other stabilizers such as caustic soda, casein or soaps may be used.
Patent GB-803159-A (GB)
Title: Process for producing peracids from aliphatic carboxylic acids
IPC: C07C409/24
Filed: 1957-07-29
Abstract: C2-3 aliphatic monopercarboxylic acids, specifically peracetic and perpropionic acids, are prepared by the reaction in the liquid phase of the corresponding carboxylic acid and aqueous hydrogen peroxide in the presence of an esterification catalyst and of an inert organic liquid having a b.p.760 of 50-130 DEG  C. which is a solvent for the peracid and not for water and which forms with water preferentially a minimum-boiling, heterogeneous azeotrope containing in the aqueous layer of the distillate not more than 0.5 mol. of the peracid per mol. of water, and removing water from the reaction zone as the azeotrope at 20-90 DEG  C. until an amount of water corresponding to all of the solvent water of the aqueous hydrogen peroxide and at least part of the water formed in the reaction has been removed. Azeotrope-forming solvents with a b.p. of 70-110 DEG  C. are preferred.  Suitable liquids include saturated lower aliphatic carboxylic esters, preferably those having at least 2 carbon atoms in each half of the molecule; saturated lower aliphatic ethers including stable chlorine and fluorine substituted ethers, e.g. those in which the carbon atom to which the halogen is attached is not adjacent to the ether-oxygen atom; halocarbons and aromatic hydrocarbons, e.g. benzene and toluene.  The water removal operation may be carried out at pressures from 6 mm. Hg. absolute to 4 atmos.  It is preferred to use the carboxylic acid and the hydrogen peroxide in stoichiometrically equivalent quantities.  The aqueous hydrogen peroxide preferably contains about 25-90 per cent by weight of H2O2. Preferred esterification catalysts are H2SO4 and the alkyl and aryl sulphonic acids; others include H3PO4, alkyl hydrogen phosphates, trifluoroacetic acid, acetylsulphoacetic acid and ion-exchange resins.  The amount of catalyst may be 0.2-5 parts by weight of carboxylic acid.  The process may be operated continuously or batchwise at 20-90 DEG  C.  Examples describe the preparation of peracetic and perpropionic acids, azeotrope-formers used being chloroform, isopropyl acetate, ethyl acetate and n-propyl acetate. A polyphosphate sequestering agent is included in some examples. Reference has been directed by the Comptroller to Specification 776,758.
Patent GB-633026-A (GB)
Title: New or improved portable spraying apparatus
IPC: B05B7/24
Filed: 1947-08-29
Abstract: 633,026. Spray-producers. ABLE, E. Aug. 29, 1947, No. 23912. [Class 69 (iii)] A portable liquid-spraying device includes a cylindrical container a for air under pressure having a cylindrical liquid container f secured to a closure member e. A rod g connects, via a passage j, with a horizontal passage q leading to a nozzle r in a removable head-portion k housing a nozzle p connected to an eduction tube n. One end of the passage q is open to atmosphere and is covered by the operator's thumb or finger to effect spraying. A tyre pump may be secured to the container a through a flexible pipe connection.
Patent GB-654290-A (GB)
Title: Improvements in or relating to variable ratio transformers
IPC: H01F29/10
Filed: 1944-08-09
Abstract: 654,290. Transformers. SHERMAN, R., (formerly SCHEIRMANN, R.). Aug. 9, 1944, No. 23916/49. Convention date, July 19, 1943. Divided out of 654,231, [Group XXXVI], [Class 38 (ii)] A variable ratio transformer comprises a magnetic core having a saturable portion 701 wherein is wound a secondary winding 636, a primary winding 633 wound on a limb 702 and having a limb 704, of relatively large, cross-section provided with an air gap 714 variable in length by means of a core 710, to act as a magnetic shunt for the saturable limb 701. With normal operating voltages applied to the primary winding, e.g. of the order of a few volts, the core 710 is withdrawn from the air gap and the magnetic circuit through this limb has a high reluctance, the core 701 is not saturated and normal transformer action takes place between windings 633, 636. Any abnormal increase in voltage across the primary winding will saturate the limb 701 and thus prevent excessive voltages in the secondary winding. A solenoid operating coil is then energized to close the air gap 714 to form a low reluctance path which will prevent excessive magnetizing currents in the primary winding to protect the winding from damage. The core 710 may be magnetically attracted to close the air gap without resort to the use of the solenoid operating coil or another limb 703 with a fixed air gap may form the shunt magnetic circuit. More than one secondary winding may be provided and the transformer may be used in current transformer applications or in a system as described in Specification 654,231, [Group XXXVI].
Patent GB-342996-A (GB)
Title: Improvements in and relating to drop hammers
IPC: B21J7/44
Filed: 1929-11-12
Abstract: 342,996. Power hammers. PNEUMATIC DROP HAMMER CO., 141, Milk Street, Boston, U.S.A. Nov. 12, 1929, No. 24002/30. Convention date, Nov. 22, 1928. Divided on 342,024. [Class 83 (iv).] A pneumatic drop hammer comprising a hammer head having extensions slidably mounted on two columns extending from the base and connected to the lower end of the piston rod of a piston reciprocable in a cvlinder mounted on a cross beam supported by the columns has the bearing members 6, 7 bored from the top and fitted with soft metal bushes 10, 11 resting on the shoulders 8, 9 at the bottom of the bores. The head 14 of the piston rod 4 is engaged in a recess in the hammer head 5 between a resilient rubber mass 15 and fibrous washers 16 retained in position by a block 17 rotatable to engage undercut recesses 20 in the walls of the recess 19 and locked by a taper pin 24 which is threaded at the top and fitted with a nut 25 for releasing it. Specification 342,024 is referred to.
Patent GB-941000-A (GB)
Title: Apparatus for weighing bulk material
IPC: G01G13/24
Filed: 1961-07-04
Abstract: 941,000. Weighing apparatus. A. B. BLANCH. May 31,1962 [July 4,1961], No. 24076/61. Heading G1W. [Also in Division B1] An apparatus for weighing granular material e. g. seed comprises-a hopper 1 (Fig. 3) inside which is a rotor 4 on a shaft 5 rotatable by the weight of material acting on a rotor vane 7, a ratchet like cam 10 rotatable with the rotor, a pawl 14 on a lever 12 pivoted at 15 and engageable with the cam to arrest rotor movement and prevent discharge from the hopper 1 until a predetermined weight of material acting on the vane 7 causes the cam 10 to deflect the pawl which is adjustably biased by a jockey weight 13, and a speed governor for the rotor. The speed governor may comprise a pump 19 (Fig. 2), chain driven from rotor shaft 5, acting on a closed circuit having a liquid reservoir 21 and adjustable restricter valve 22. The lever 12 carrying the jockey weight may be calibrated for a range of loads, and a means (not shown) provided to indicate the number of loads discharged. A second material e.g. insecticide, fertilizer, may be added to each weighed load by means of a helical screw conveyer 26, in a hopper 25. The cam 10 acting upon a stud 33, on an adjustable lever 32, which moves the lever 32, the links 31, 30 and pawl 29 to turn the ratchet wheel 27 and hence the conveyer 26. the Second material is thus added as the rotor 4 turns to discharge the first material and is discharged therewith. In a modification shown in Fig.4 a liquid may be added. Cups 41, on a rotor 40 driven by the shaft 5, pick up liquid from the tank 42, carry it upwards and discharge it on to the tray 44 from whence it passes through a pipe 45 to a spray pipe 46 inside the main hopper 1. The quantity of liquid added may be adjusted by varying the level of liquid in the tank or by altering the size or number of cups.
Patent GB-842410-A (GB)
Title: Method and apparatus for the production of filaments or fibre from glass or the like
IPC: C03B37/03
Filed: 1958-07-25
Abstract: 842,410. Glass filaments. SCHULLER, W. H. W. July 25, 1958 [Dec. 7, 1957], No. 24087/58. Class 56. In the event of a break in the production of filaments from glass by a process in which a plurality of filaments are drawn off side by side on to a drum from which they are then removed before completing a turn, the remaining unbroken filaments are removed by an auxiliary removing device. Fig. 2 shows an apparatus wherein filaments from glass rods are removed from drum 3 by scraper 4 and removed by draught u caused by rotating of drum 3 to conveyer belt 6 moving in direction of arrow B and deposited thereon to form a mat or web. If, for example, the filaments from rods 1b and 1c fail, the auxiliary scraper 7 is applied to the periphery of the drum to remove the filaments which continue to be produced. These are collected on the drum 8 which rotates in the direction C. The auxiliary scraper 7 and main scraper 4 may be interconnected so that engagement of the auxiliary scraper causes the main scraper to be disengaged (preferably after a delay to collect residual filaments on drum after the auxiliary scraper) or vice versa.