baber/WOPTO huggingface dataset:
Patent GB-1002142-A (GB)
Title: Method of, and apparatus for, propelling railway vehicles
Inventor: BICK DAVID EWART
IPC: B61K7/02
Filed: 1961-05-03
Abstract: 1,002,142. Propelling railway vehicles. DOUTY MINING EQUIPMENT Ltd. May 2, 1962 [May 3, 19611, No. 16066/61. Heading B7L. In a method of propelling vehicles along a railway track a number of fluid pressure operated telescopic devices are spaced at intervals along the track so as to be successively engaged by passing vehicle wheels and fluid under pressure is applied to extend the devices successively in rising engagement with the periphery of the vehicle wheel as the wheel moves away from each device. In operation the flange of a vehicle wheel rolling along the rail 12 engages a head 14 of a device 10 which head 14 is depressed so that a cylinder 13 slides downwardly until its lower part compresses a spring 34 to overcome the friction between a packing ring 33 of a slide valve 19 and a bore 21 to shift the valve 19 downwards on to a ring 32. A recess 28 on the valve 19 is now opposite an high-pressure port 25 so that when the point of contact of the wheel with the rail 12 passes beyond the central axis of the piston 13 the piston 13 is moved upwards by pressure fluid, passing through a connection 24, port 25, holes 29 and chambers 37, 36 to engage the periphery of the wheel. Towards the end of the upward stroke a flange 17 on the stem 16 of a piston 13 engages a flange 18 on the valve 19 and lifts the valve 19 upwards against a step 23 to place the chambers 37, 36 into communication with a low-pressure fluid supply port 27 in readiness for the next downward stroke of the piston 13 by a vehicle wheel. Specification 909,181 is referred to.
Patent GB-1109131-A (GB)
Title: Methods of adding information to data storage media
IPC: G03G5/08
Filed: 1965-04-14
Abstract: 1,109,131. Photographic process. ITEK CORPORATION. April 14, 1965 [April 15, 1964], No. 16068/65. Headings G2C and G2H. ' Information is added to a data storage medium having information already stored therein, optionally after erasure of a portion of said stored . information, which comprises a photo-conductive semi-conductor, by uniformly de-activating at least part of the medium and imagewise exposing the de-activated medium to activating radiation (e.g. visible or u.v. light) to reversably activate the semi-conductor to render it capable of causing chemical reaction at the portions of the medium corresponding to said pattern. The image may be developed with a liquid redox system as described in Specification 1, 043, 250, or a metal salt the latent metal images formed by development being amplified by physical development; silver/dye images may be formed by treating the medium with silver nitrate to form a latent silver image and with the colour coupler and a silver halide colour developer; the silver image may be bleached and the process repeated to give multi-colour images. The images may be at least partially erased (e.g. by bleaching or solvent) and/or more information may be added. The medium may be de-activated by infrared radiation, dark storage or corona discharge. In an apparatus of adding and selectively erasing information on a data storage medium on a plate, a conveyer belt transports the plate through a heating station, an exposure station, processing baths, an erasing station comprising a liquid bath or liquid dispenser fitted with a mask; alternatively the apparatus of Specification 1,109,132 may be used.
Patent GB-291763-A (GB)
Title: Improvements in photo-electric cells and other electric discharge devices
IPC: H01J40/06
Filed: 1928-06-02
Abstract: 291,763. Westinghouse Electric & Manufacturing Co., (Assignees of Zworykin, V. K.). June 8, 1927, [Convention date]. Vacuum tubes.-A photoelectric or other discharge device has an active surface formed by layers of different materials made so thin that the combined layer is transparent. A layer of an alkali metal such as potassium, sodium, rubidium, or caesium may be deposited on a layer of metal of lower vapour pressure such as tungsten or molybdenum. As shown, a glass tube 8 is mounted on supports 2 which are welded to copper collars 9 fused to the tube, the fused joint and a part of the adjacent glass being coated with silver. A filament 10 of tungsten or molybdenum and a filament 11 of platinum or nickel coated with potassium or sodium trinitride, or with an alkali metal or salt thereof, are mounted inside the tube 8. The bulb is evacuated and current is passed through the filament 10 to vaporize tungsten &c., which is deposited on the inside of the tube 8, the thickness of the transparent film being determined by resistance measurement. A deposit of alkali metal on the tungsten &c. film is formed by passing current through the filament 11. When the device is used as a photo-electric cell, the electrodes consist of the film and one of the filaments 10, 11.
Patent GB-161562-A (GB)
Abstract: 161.562. Krupp Akt.-Ges., F. April 8, 1920. [Convention date]. Cash registers; calculating-apparatus. - In a cash register or calculating-machine, the rows of keys are arranged in transverse partitions or brackets A, the edges of which are provided with semicircular bearings B', K' opening toward the outside and closed by suitable caps b<2>, k<2> so that the shafts B, K running across the key banks may be readily built in with all the parts appertaining thereto already assembled thereon- Each partition carries two rows of keys.
Patent GB-659538-A (GB)
Title: Improvements in or relating to tups for drop forging machines
IPC: B21J7/36
Filed: 1949-06-17
Abstract: 659,538. Power hammers. ABBEY, A. (Louvroil-Montbard Aulnoye). June 17, 1949, No. 16235. [Class 83 (iv)] [Also in Group XXIX] In a drop forging machine the movement of the tup is controlled by electric contacts disposed at different levels. The tup 20 is supported by a belt 22 which may be raised by driven rollers 23, 24, the roller 23 being adjustable but normally fixed and the roller 24 being movable towards or from the roller 23 in order to grip or releasa the belt. The movement of the roller 24 is effected by a piston 16 under the action of a spring 18 and compressed air supplied to a cylinder 30 from an inlet 40 under the control of a valve 37, 39 which is operated by a servo-valve actuated by a solenoid (see Group XXIX). The tup may be retained in its lifted position between two drop forging operations by a brake device comprising an adjustable normally fixed jaw 32 and a jaw 31 operable by a piston 8 under the control of a valve 7 and solenoid 5 controlled by a pedal switch 1. Switches 2, 3, 4 are arranged in the path of travel of a finger 21 projecting from the side of the tup. In operation, the pedal 1 is depressed, releasing the brake and allowing the tup to fall until the finger 21 closes the switch 2. Through a solenoid 12 and valve 37, 39, the roller 24 is then moved to raise the tup. If a contact maker 9 is closed, the opening of switch 3 on the upward movement of the tup has no effect, but when the switch 4 is opened, the solenoid is cut off, the roller 24 retracted by the spring 18 and the tup allowed to fall again. This continues as long as the pedal 1 is depressed. If, however, the pedal is raised, the brake is locked and a mechanical connection therefrom to the contact maker opens the latter so that on again depressing the pedal, it is the opening of the contact 3 which causes the tup to fall. By again operating the pedal 1, the contact maker is closed so that the switch 4 controls the fall of the tup. Compressed air exhausted from the cylinder 30 is used to clean the lower die. The frame of the machine is provided with a number of guideways for the tup near the bottom of its path, but with only a single guideway at the upper part.
Patent GB-921622-A (GB)
Title: Epoxy modified alkyd resins
IPC: C09D167/08
Filed: 1959-05-12
Abstract: An epoxy modified alkyd resin, capable of being infinitely diluted with water and suitable for use as a paint or varnish vehicle, is made by (1) heating an oil modified alkyd with a dicarboxylic acid or anhydride to obtain a partial ester with residual acidity (2) cooling the partial ester, (3) adding a water-miscible solvent and an epoxidized ester derived from a fatty oil to the cooled composition, (4) effecting a partial reaction between the epoxy compound and the partial ester and (5) inhibiting further reaction by neutralizing residual acidity of the partial ester with a volatile neutralizing agent.  Upon heating the resultant resin, the neutralizer is driven off and curing of the resin takes place.  In examples the alkyd resins were made by reacting (a) phthalic anhydride or tetrahydrophthalic anhydride, (b) maleic anhydride (optional), (c) pentaerythritol, glycerol, a mixture of trimethylol ethane and sorbitol or a mixture of pentaerythritol and ethylene glycol and (d) pelargonic acid, coconut fatty acids, tall oil fatty acids, soyabean fatty acids, linseed fatty acids, dehydrated castor oil fatty acids or an alcoholysis product of soyabean oil and pentaerythritol.  Other alkyd forming components mentioned are polypentaerythritols, diethylene glycol and butanediol; cottonseed, corn, soyabean, rapeseed, safflower, castor, dehydrated castor, linseed, coconut, menhaden, sardine, whale, cod, tallow, or lard fatty oil; and caproic, caprylic, capric, lauric, myristic, palmitic, stearic, behenic, oleic, erucic, linoleic, arachidonic and clupadonic acids. The alkyd resin-forming reaction may be effected in the presence of a solvent, e.g. diethylene glycol diethyl ether.  The dibasic compound with which the alkyd is condensed may be phthalic, tetrahydrophthalic, hexahydrophthalic, monochlorophthalic, tetrachlorophthalic or chlorendic anhydride. The water-miscible solvent may be denatured alcohol, or the monomethyl-, monoethyl-, or monobutyl-ethers of ethylene glycol or diethylene glycol.  The epoxy compound may be an epoxidized oil containing 5-12% oxirane oxygen (e.g. epoxidized linseed, soyabean, safflower or fish oils), epoxidized linseed fatty acid ester, epoxy-stearyl epoxy stearate, butyl epoxy-stearate, octyl epoxy-behenate, methyl di-epoxy stearate, propyl tri-epoxy stearate or allyl epoxy-stearate.  The volatile neutralizing agent may be ammonia, an alkyl amine containing 1-5 carbon atoms, dipropylamine, diisopropylamine, triethylamine, monoethanolamine, diethanolamine, dimethylethanolamine, diethylethanolamine, morpholine or N-methyl morpholine.  The resins may be admixed with other water-soluble or water-dispersible resins, e.g. phenol-formaldehyde, melamine-formaldehyde, butylated melamine-formaldehyde, silicon, butadine-styrene or acrylic resins. Pigments such as titanium dioxide or a mixture of brown iron oxide, china clay and lithophone may be added.  Specification 921,623 is referred to.
Patent GB-1146444-A (GB)
Title: Improvements in or relating to microwave/d.c. converters
IPC: H01J25/49
Filed: 1966-04-14
Abstract: 1,146,444. Velocity-modulated tubes. SIEMENS A.G. 14 April, 1966 [15 April, 1965], No. 16296/66. Heading HID. In a microwave/D.C. converter, the microwave signal produces a uniform increase in the drift velocity of an electron beam, the subsequent retardation of which by a gridded collector system provides the D.C. output. In one embodiment (Fig. 1, not shown), the microwave signal is applied to a Cuccia coupler to produce a fast cyclotron wave on an electron beam moving in an axial magnetic field, the cyclotron wave being subsequently converted to a synchronous wave-with a consequent uniform increase in the drift velocity of the beamby an abrupt reversal in sense of the magnetic field. Instead of a Cuccia coupler, a waveguide providing a circularly polarized electric field may be employed. In another embodiment, Fig. 3, which dispenses with a magnetic field, the coupler is in the form of a pair of parallel electrodes twisted about the beam to impose upon the latter a continuous radial deflection, such that the resultant beam rotates around a conical surface, the collector 5 with its grid 6 being of appropriately concave shape to ensure normal receipt of the beam. The coupler in this embodiment may be in the form of a twisted rectangular waveguide (Fig. 4, not shown), arranged such that during a half-cycle of the microwave signal, the beam traverses a 180 degree section of twist.
Patent GB-529916-A (GB)
Title: Improvements in or relating to a device for introducing tubes into tube-bending machines
IPC: B21D7/16
Filed: 1939-06-02
Abstract: 529,916. Angular bending. HILGERS MASCHINEN-UND APPARATE-BAUANSTALT GES. June 2, 1939, No. 16315. Convention date, June 4, 1938. [Class 83 (iv)] In a tube bending machine with a mandrel g movable longitudinally by a drive h independent of the drive for the bending member b, a chain, draw-bar, or cable k fixed to one end of the mandrel and to the rear end of the tube α assists in drawing the tube into the machine. The cable or chain is fastened to the mandrel by a hook and eye, screw means, or a bayonet joint and to the tube by a disc n, a hook, or a transverse bolt. The slide rail c is displaceable longitudinally on the guide by independent means.
Patent GB-591267-A (GB)
Title: Improvements in or relating to cam generating apparatus
IPC: B23Q35/10
Filed: 1943-10-05
Abstract: 591,267. Cams. THOMAS, A. Oct. 5, 1943. No. 16334. [Class 80 (iii)] [Also in Group XXII] The invention relates to a method and machine for generating three-dimensional cams of the kind shown in Figs. 10 and 11 in which the outer surface of the body a is generated by straight lines A .... A, B .... B, whose angle to the axis b .... b varies from a positive angle Q at A to a negative angle Q at B so that axial movement of the cam will move a spherical follower c radially, the rate of radial movement being variable according to the angular position which the cam is given about its axis. Alternatively the follower may be moved in accordance with a function derived from the simultaneous angular and linear movements of the cam. The cam is generated in the machine by reciprocating a planing tool along a straight line path corresponding to the lines A .... A &c., and changing the angle of said path relatively to the blank axis at each stroke, the blank being rotated intermittently about its axis between successive strokes of the tool.
Patent GB-163533-A (GB)
Abstract: 163,533. Scott, H. R., and Rentell, G. H. March 13, 1920. Turning.-In a tool-post for turret lathes &c., one, or two tools k are clamped against ledges j on a base member a by means of a sliding gripping block b. The base member has a threaded portion c coasting with a collar d to adjust the height of the tool and a bolt f serves both to secure the tools and to clamp the tool-post; to its table e. When only one tool is used, as shown, a bolt p may serve as a distance piece. The tools are released when the nut g is slackened by means of a spring q.
Patent GB-1499292-A (GB)
Title: Scaffolding
IPC: E04G1/14
Filed: 1976-04-22
Abstract: 1499292 Scaffolding FORM-SCAFF (PTY) Ltd 22 April 1976 [24 April 1975] 16363/76 Heading E1S A scaffolding element comprises a right angled triangular frame housing a vertical member 12, a horizontal member 14 and an inclined member 16 with an end element 18 at the joint between the horizontal and inclined members in the form of a U-shaped locating and locking yoke having an aperture 26 of diameter slightly greater than the diameter of the vertical member 12 and slot 30 being slightly wider than the diameter of the vertical member 12, the distance between the aperture and slot being slightly greater than the distance between the end of the vertical mmber 12 and the underside of the horizontal member 14. Three or more such elements may be connected as in Fig. 1 to form one course of a scaffold tower. Further courses may be built up using locating pins 36 and locking pins 40 to connect the vertical members of the elements.
Patent GB-857000-A (GB)
Title: Improvements in or relating to fulling machines
IPC: D06C17/02
Filed: 1959-05-13
Abstract: 857,000. Finishing fabrics; stop mechanisms. BERTOLDI, A. May 13, 1959 [May 24, 19581, No. 16364/59. Class 42 (1). An arrangement for arresting the operation of a fulling-machine in the event of knotting or entanglement of the fabric piece during a fulling-operation, comprises a feeler device adapted to contact a piece of fabric in the machine and to detect knotting or entanglement of the fabric, and a pressure fluid control means responsive to detection of knotting or entanglement by the feeler to apply pressure to separate the pressure rollers and thus arrest the operation of the machine before the knotting or entanglement can reach the pressure rollers. The machine shown comprises pressure-rollers 4 and 5, one of which is driven, and walls 6 and 7 delimiting a feed channel 8. The position of the wall 6 can be adjusted by connection 9 and the pressure exerted on the fabric by wall 6 is adjusted by regulating the air pressure in the cylinder 10. The upper roller 4 is supported so as to be pivotable about axis 13 by the action of a system of adjustable bars 14 terminating at the rod of a piston 15 slidable in a fixed cylinder 16. The cylinder 16 is fed from an air compressor K through a main cock 17 and from thence through electromagnetically-operated valve 18 or 19. If through 18, the air passes through two pressure reducers 20, 21 which are controlled through knobs 22, 23 and thence via lines 24, 25 to the two opposite cylinder chambers 16a, 16b of cylinder 16. Numeral 26 denotes a three-way valve which permits the compressed air in cylinder 16 to be released to atmosphere. The branch 28 of the circuit is controlled by valve 19 whilst the line 24 can be released to atmosphere by valve 29. In operation on the occurrence of a knot or entanglement the feeler lever 30 is lifted, thereby thus operating the switch 33 to stop the electric motor driving the machine and at the same time open the valves 19 and 29 and close valve 18 so that the piston 15 is quickly lifted and the pressure roller 4 is raised. In normal operation valve 18 is open and valves 19 and 29 closed so that the cylinder 16 is fed on both sides of piston 15, and by suitably regulating the two pressure reducers 20 and 21 the pressure exerted on the fabric passing through the rollers can be regulated. In the event of a feed frame 35 being fitted, when knots or entanglement are formed, the frame lifts an arm 36 to actuate a switch 39 in series with switch 33. The feeler device 30 may support a piece of wire gauze so that should a workman inadvertently interpose his hands between rollers 4 and 5, the feeler 30 is displaced so causing stopping of the machine and lifting of the roller 4.
Patent GB-1467791-A (GB)
Title: Automatic document handler
IPC: G03B27/62
Filed: 1975-04-21
Abstract: 1467791 Registering sheets XEROX CORP 21 April 1975 [26 April 1974] 16461/75 Heading B8R In a device wherein sheets are registered on a platen 6 against a register stop 22 by first advancing the sheets forwardly over the stop and then rearwardly into engagement with the stop, the registering edge of the stop is arranged at an included angle a to the platen of 79-84 degrees. The sheet transport belt 34 co-operates with the top end of the register edge to keep it constantly sharpened. The register is movable out of operative position to permit the sheet to be moved rearwardly off the platen.
Patent GB-810741-A (GB)
Title: Improvements in or relating to lubricating oil compositions
Inventor: GOSSLING PERCY WILLIAM LINGLEY
IPC: C10M141/08
Filed: 1956-05-28
Abstract: Lubricating oil compositions, particularly suitable as switch oils, transformer oils and turbine oils comprise a lubricating oil and minor proportions of (a) a secondary aromatic mono-, di- or poly-amine in which the nitrogen atom is attached directly to two aromatic radicals; and (b) a compound having the formula <FORM:0810741/III/1> where R1 and R2 are alkyl, aryl or alicyclic radicals or may together form part of a ring; R is CH2, R4CH3 or R4.CH2R5, where R4 and R5 are hydrocarbon radicals; and R3 is an alkyl, aryl or alicyclic radical.  The preferred lubricating oils are naphthenic mineral oils with a viscosity of 85 to 200 seconds Redwood I at 70 DEG  F. but other mineral oils and synthetic oils, e.g. di (2-ethyl hexyl) sebacate may also be used.  The amines may carry alkyl, aryl or etherified hydroxyl substituents in the aromatic ring. Examples of suitable amines are phenyl alpha or beta naphthylamine; xylyl beta naphthylamine; n-heptyl-, pp1-dioctyl-, or p-isopropoxy - diphenylamine; diphenylamine; and N,N1-diphenyl-p-phenylene diamine. Examples of additive (b) include n-butyl (dimethyl dithiocarbamyl) acetate; n-butyl (di-n-butyl dithiocarbamyl) acetate; n-butyl (di-isopropyl dithiocarbamyl) acetate; isopropyl (di-n-butyl dithiocarbamyl) acetate; 2-ethyl hexyl (cyclo-pentamethylene dithiocarbamyl) acetate; and n - butyl - alpha - (dimethyl dithiocarbamyl) isobutyrate.  Additives (a) and (b) may each comprise 0.01 to 1 per cent weight of the composition and the ratio of (a) : (b) should be between 3 : 1 and 1 : 3, preferably 1 : 1.  Optional ingredients mentioned are mercaptoarylene thiazoles and derivatives thereof capable of dissociation into free radicals, e.g. 2-mercapto-benzothiazole, benzothiazole disulphide and hydroxymethyl thiobenzothiazole and additives having the formula <FORM:0810741/III/2> where R1 and R2 are hydrocarbon radicals and may form part of a ring and X is S, O, or NH, e.g. 3 - piperidinomethyl - 2 - benzothiazolinethione and 3 - morpholinomethyl - 2 - benzothiazolinethione.  Examples comprise mineral oils and (i) 0.1 per cent wt. each of phenyl beta naphthylamine and n-butyl (dimethyl dithiocarbamyl) acetate; (ii) 0.05 per cent wt. each of phenyl alpha naphthylamine and n-butyl (dimethyldithiocarbamyl) acetate; and (iii) 0.25 per cent wt. phenyl beta naphthylamine, 0.1 per cent wt. n-butyl (di-n-butyl dithiocarbamyl) acetate and 0.015 per cent wt. of an alkylated succinic acid corrision inhibitor.  Specification 797,316 is referred to.
Patent GB-999555-A (GB)
Title: New textile material
IPC: B29C44/00
Filed: 1962-04-30
Abstract: A porous textile product suitable for use as a chamois leather is produced by coating a textile material on one or both sides with a mixture comprising (1) viscose, and (2) a volatile organic liquid having a boiling point between 35 DEG  C. and 80  DEG C., e.g. carbon disulphide or alcohol, and treating the coated textile material in an acid coagulating bath at a temperature sufficiently high to volatilize at least part of the volatile organic liquid.  The mixture may be coagulated by heating at a temperature sufficient to volatilize substantially all the volatile organic liquid.  The viscose (1) may also contain a water-soluble crystalline material, e.g. sodium sulphate.  The viscose layer, after application to the textile material, may be smoothed by mechanical means, e.g. brushing in the presence of water.  The textile material may be a woven or nonwoven fabric, e.g. a hairy fabric such as flannel or cotton fabric.  The product may have a layer with large pores on one side and a layer with small pores on the other side.
Patent GB-695835-A (GB)
Title: Improvements in or relating to lamp-houses for optical picture projectors
IPC: G03B21/20
Filed: 1951-07-12
Abstract: 695,835. Optical-projection apparatus. ZEISS IKON AKT.-GES. July 12, 1951 [Nov. 4, 1950], No. 16560/51. Class 97 (i). A lamphouse includes a casing and a door adapted to be moved into said casing on opening, guiding means being provided for the door to move its leading edge past adjacent parts of the housing along a path which is not wholly circular. As shown, the door 1 is supported at the bottom on pivoted links 16 and at the top by rails 15 which guide pins 14 projecting from the door. The rails are shaped at 17 to guide the door as it is opened and at 18 to assist in retaining it open. Part of the weight of the door is balanced by a spring 20. The door may be supported whollyon pivoted links. In another form, sliding bolts, spring-urged outwardly, are provided at each corner of the door and their ends are slotted to engage guide rails adjacent the ends of the door.