baber/WOPTO huggingface dataset:
Patent GB-725999-A (GB)
Title: Improvements in or relating to controlling double-acting, pressure-responsive devices
Inventor: HOLM HANS FESER
IPC: F15B11/08
Filed: 1953-04-15
Abstract: 725,999. Pneumatic single-stroke apparatus. SMALLPEICE, Ltd. April 15, 1953. No. 10262/53. Class 8 (2). A piston valve A for controlling the supply of pneumatic pressure from a duct 7 through one or other of ducts 8, 9 to the ends of a working cylinder 10 comprises connected pistons 3 ... 6 within a casing 1 having end chambers 20, 14 and moved to the right from the position shown on opening a normally closed three-way impulse valve 35 to allow compressed air from a duct 39 to flow through ducts 31, 30 within the piston 26 of a control valve B, and its rod 27, a chamber 36 and a duct 21 to the chamber 20 : when the end position of the pistons 3 ... 6 is reached, pressure in a duct 44 connecting the pressure duct 9 to a piston 42 within the casing 22 of the valve B displaces this piston and the piston 26 against which it abuts to its other extreme position to allow the chamber 20 to exhaust through the duct 21, a groove 28 of the piston rod 27 and a duct 40 open to atmosphere ; the return of pistons 3 ... 6 being effected irrespective of whether the valve 35 is open or closed on opening a three-way impulse valve 16 to allow compressed air from a duct 19 to gain access to the chamber 14 which was hitherto vented through the valve 16 to atmosphere. At the completion of the cycle i.e., when the pistons3 ... 6 and 11 are in their initial position shown, the valve 35 is assumed to be released whereupon the chamber to the right of the piston 26 is vented through the valve 35, and said piston 26 and rod 27 are returned by pressure from the duct 8 and a duct 41 connecting it to the left of the piston 26.
Patent GB-320612-A (GB)
Title: Improvements in braking mechanism
IPC: B60T11/04
Filed: 1928-04-05
Abstract: 320,612. Girling, A. H. G. April 5, 1928. Pinless hinges.-An articulated joint, more particularly applicable for the control of brakes for vehicles, comprises a knife-edge H formed as one wall of an enclosed' slot F in the rod B, Fig. 1, to prevent displacement of the lever A which carries the V-shaped notch for engagement with the knife-edge. The end of the lever opposite its notch is formed with a rounded edge centred about the root of the notch, and a stop-pin D may be provided. The slot F for the lever may be formed in side pieces B<2>, Fig. 4; in this arrangement the knife-edge member H is pivotally mounted about the pin K. The V-shaped notch may be provided at the middle of one of the edges of a lever. The bearing parts may consist of hardened steel or alloy metal, which may be welded in position. The knife-edge may be produced by bending the end B, Fig. 3, pressing up at E the metal in the position of the slot, and cutting the metal along the line G to leave a sharp edge H, which is then rounded off.
Patent GB-111445-A (GB)
Title: Hosiery Drying and Shaping Forms.
IPC: D06C5/00
Filed: 1917-07-18
Abstract: 111,445. Paramount Hosiery Form Drying Co., and Pope, H. July 18, 1917. Shaping made-up goods upon internal frames. -A form for shaping and drying hosiery comprises a foot-section provided with oppositely disposed gore-positioning depressions for trueing up the hosiery placed thereon. As shown, the form is hollow in order that it may be steamheated internally, and the edge 3 is reduced to crease the hosiery. The toe portion 6 has a thickened part 7 to flatten the toe of the article and a groove G extending in the same direction on each side to receive and position the gore without stretching, the looper's knot being received in a widened recess 13. The thickened parts 7 may be dispensed with.
Patent GB-456135-A (GB)
Title: Improvements in and relating to television and like transmitting systems
IPC: H04N5/40
Filed: 1935-04-03
Abstract: 456,135. Television. BLUMLEIN, A. D., 32, Audley Road, and NIND, E. A., 10A, Gordon Road, both in Ealing, London. April 3, 1935, No. 10395. [Class 40 (iii)] In a television transmission system in which the amplitude of a carrier is modulated in an amplifier by trains of picture signals having intervals between the. successive trains, the amplitude of the carrier is modulated by synchronizing signals at a secondary modulating point between the generator of the carrier oscillations and the modulated amplifier in such a manner that the amplitude of the transmitted modulated carrier is equal substantially to zero during the intervals between the trains. The picture signals with their D.C. components are applied to a valve 1 and a modulator valve 2 which feeds an amplifier 6 and the output terminal 7. Carrier current at the input 4 passes to the amplifier 5 and is also fed to the amplifier 6. The synchronizing signals are applied to a valve 9 and make the upper end of a resistance 12 sufficiently negative to cut off the anode current in the valves of the amplifier 5 and thus suppress the carrier oscilla - tions. If necessary, a delay network may be incorporated to delay the signals established by the modulator 2 relative to the signals fed by the valve 9 to the upper end of resistance 12. In a modified arrangement, Fig. 2, the signals are applied in anti-phase relation to the grids of valves 2, 15, the valve 2 acting as a modulator of the carrier applied at 4. The synchronizing impulses are applied to make the anode of the valve 15 less negative so that the valves 16, 16<1>, which are biassed to be insulating during the trains of picture signals, are rendered conducting and the carrier input to the modulated amplifier is substantially reduced to zero. An acceptor circuit 17, offering low impedance to the carrier frequency, is arranged between the grid and cathode of the valve 16, and condensers 18, 19 remove the effect of inter-electrode capacity in the push-pull valve arrangement 2, 15. The full-wave absorption circuit comprising the valves 16, 161 may be replaced by a halfwave absorption circuit, Fig. 2 (Prov., not shown).
Patent GB-934794-A (GB)
Title: Improvements in or relating to travelling wave tubes
Inventor: MINAKOVIC BORIVOJE
IPC: H01J23/42
Filed: 1960-03-24
Abstract: 934,794. Travelling wave tubes. STANDARD TELEPHONES & CABLES Ltd. March 24, 1960, No. 10408/60. Drawings to Specification. Class 39 (1). A travelling wave tube includes at least three similar slow-wave structures closely spaced from one another in circular symmetry about a given axis without overlapping in either longitudinal or transverse directions and with their axes of propagation parallel to the given axis and separate from one another, and means for projecting a cylindrical beam of electrons along the given axis without substantial interception by the slow-wave structure, the spacing between the structures being such that each is coupled closely to the electromagnetic field of its immediately neighbouring structure and to the electron beam in such manner that their individual electromagnetic fields oscillate in phase along the electron beam path and combine to produce a slow wave for interaction with the beam, in which slow wave the electric vector is predominantly longitudinal. The slow-wave structures may be helices, ladders or mesh structures of the type shown in Specification 906,206. In a set of 6 or 8 helices each helix is wound on a ceramic rod and the rods are symmetrically arranged in a circle about the axis. All the helices can be wound in the same direction. For an even number of helices adjacent helices or groups of helices may be contra-wound. For a large number of helices a hollow electron beam is used. The coupling is by external contra-wound helix couplers or by a metal tube joined to a choke sleeve to a waveguide feeder. For an even number of helices with adjacent helices contra-wound a waveguide or coaxial line feeder is coupled to only one of them. In another embodiment four or six ladders with 45 degree wings and slanting bar rungs form a box about the electron beam. Extensions of the ladders or meshes project into waveguide feeders. The device may be a backward wave oscillator or backward wave amplifier and may be electronically tuned.
Patent GB-176691-A (GB)
Title: Improvements in and relating to steam superheaters
IPC: F22G7/10
Filed: 1921-04-09
Abstract: 176,691. Scott, H. B., and Smith's Dock Co., Ltd. April 9, 1921. Junction-pieces.-The group of vertical superheating tubes e in the combustion chamber a of a marine boiler open into enlargements d secured to or formed integral with the tubes b connected to the outside headers. The superheating tubes may be secured to the enlargements by screwing, welding or expanding. The conical joint between a header and a tube b described in Specification 159,588, has two or more asbestos, copper, or other metal, or composition rings placed between the cone on the end of the tube and recesses in the aperture in the header.
Patent GB-1219712-A (GB)
Title: Catalysts for the conversion of hydrocarbons
Inventor: WOLF FRIEDRICH
IPC: C07C5/10
Filed: 1969-02-27
Abstract: 1,219,712. Hydrocarbon conversion catalysts. MARTIN-LUTHER UNIVERSITAT HALLE-WITTENBERG. 27 Feb., 1969, No. 10530/69. Heading B1E. [Also in Division C5] A hydrocarbon conversion catalyst comprises a catalytically active metal e.g. Pt and a carrier consisting of a leached out glass, the composition of which lies in the range of the boric acid anomaly of glass systems metal oxide(s) boron-oxide, silicon dioxide and which shows a phase separation in the system, characterised in that the glass which can be leached out has been subjected, before the leaching out process, to a heat treatment between 100 and 700‹C., combined with a cooling process and/or after the leaching out process to an alkali treatment in aqueous phase between 20 and 100‹C. The pre-leached glass carrier may be 70%SiO 2 , 23%B 2 O 3  and 7%Na 2 O. Other catalytically active metals are Pd and Ni.
Patent GB-645089-A (GB)
Title: Improvements in preparation of copolymers of styrene and acrylonitrile
IPC: C08F212/10
Filed: 1948-04-16
Abstract: An aqueous dispersion of a copolymer of styrene and acrylonitrile is prepared without the use of an emulsifying agent such as a soap or a sulphated or sulphonated organic compound by subjecting to polymerizing conditions a mixture of styrene and acrylonitrile in water with the aid of an oxidation-reduction catalyst system, the styrene content being 20 to 90 per cent by weight of the polymerizable monomers.  The catalyst system is preferably a mixture of alkali-metal persulphate and bisulphite, preferred proportions being 0.05 to 2 parts persulphate and 0.05 to 5 parts bisulphite per 100 parts of polymerizable monomers.
Patent GB-478925-A (GB)
Title: Method of pulverizing melted products by atomization
IPC: B01J2/04
Filed: 1937-04-14
Abstract: In the solidification by spraying into air of solutions or melts of soap, soda, nitrate of ammonia, calcium nitrate, nitro chalk and other substances, the hot solution or melt before atomization is passed through a cooling device containing a rapidly rotating worm or other member adapted to maintain the size of particles solidified in the cooler not greater than those formed by the atomization.
Patent GB-106754-A (GB)
IPC: H02K9/06
Abstract: 106,754. Tilling-Stevens, Ltd., and Smith, P. F. Sept. 29, 1916. Dynamos and motors, cooling; armatures, cooling.-The end supports E, F for the armature windings D of a dynamo or motor are formed with fan blades H for forcing air through the casing B and through the armature core. The fan blades H are preferably cast integrally with the hub H<3> and outer rings H<1>, H<2>. The support E is formed with a curved or flared mouth, as shown. The invention is applied to machines used on petrolelectric vehicles, one or more pipes G being pro. vided to act as a scoop for carrying cold air into the casing B from the exterior of the vehicle.
Patent GB-972006-A (GB)
Title: Novel insecticidal dialkyl polyhalo-alpha-(halomethylene) benzyl phosphates
IPC: C07F9/113
Filed: 1963-03-18
Abstract: The invention comprises compounds of formula <FORM:0972006/C1/1> where the alkyl groups are C1-4, each X is chlorine or bromine and n is 3, 4 or 5. They are prepared by reacting a trialkyl phosphite with a compound of formula <FORM:0972006/C1/2> The products are insecticides (see Division A5). 2,2,21,41,51-, 2,2,21,41,61- and 2,2,21,31,41-pentachloro- and 2,2-dichloro-21,41,51-tribromo-acetophenones are prepared from dichloroacetyl chloride and 1,2,4-, 1,3,5- or 1,2,3-trichlorobenzene or 1,2,4-tribromobenzene respectively in the presence of AlCl3. Reference is made to the preparation of the corresponding bromo compounds from 2,2-dibromoacetyl chloride or by bromination of appropriately substituted acetophenones.  Reference has been directed by the Comptroller to Specification 775,085.ALSO:Insecticidal compositions comprise organophosphorus esters of formula <FORM:0972006/A5-A6/1> where the alkyl groups are C1-4, each X is chlorine or bromine and n is 3, 4 or 5 (for preparation see Division C2). Reference is made to solutions, suspensions or dispersions, emulsions, dusts and aerosols.  There may also be present: surfactants; other insecticides including pyrethrum, rotenone and sabadilla, DDT, benzene hexachloride, thiodiphenylamine, cyanides, azobenzene, tetraethylpyrophosphate, parathion, DDVP, dimethyl 1,2-dibromo-2,2-dichloroethylphosphate and compounds of As, Pb and/or F.  The compositions may contain adjuvants, e.g. soaps, rosin salts, saponins, gelatin, casein, long chain fatty alcohols and anionic, nonionic and cationic surface-active agents. The compositions are used for treating soil, plants, animals and air.  Reference has been directed by the Comptroller to Specification 775,085.
Patent GB-755670-A (GB)
Title: An improved trailer
IPC: B62D53/06
Filed: 1954-04-12
Abstract: 755,670. Trailer vehicles. RISEBOROUGH, J. H. April 12, 1955 [April 12, 1954; Nov. 9, 1954], Nos. 10765/54 and 32441/54. Class 108 (1). [Also in Group XXX] A two-wheeled trailer comprises a rear deck 12, Fig. 2, which is horizontal in the towing position, a fore-deck 13 which slopes upwardly in the towing position but is horizontal when the front end is lowered to the ground, an openable tail wall 33, and hinged flaps 20, 21 so that loads such as corn sacks may be hand-trucked on to the deck 13. The loaded deck 13 may then be brought back to the towing position by power lift linkage on the tractor or by jacks 25, and the loads then moved to the rear of the trailer. In another embodiment, Fig. 5, the hinged flaps are formed as ramps, a tail gate is provided, and all or part of the front wall 34 may be removed. The trailer is further provided with a cranked draw-bar 42 pivoted at 43 and coupled to the tractor by means of a universal joint, and between plates 44 on the wall 34 is pivotally mounted at 47 the body of an hydraulic jack 48 which is pivoted at its other end to the draw-bar at 52. This hydraulic jack may be operated from the tractor or by remote control, or may be replaced by a manuallyoperated jack. When fluid is withdrawn from the hydraulic jack it telescopes and lowers the deck 13 to the ground, whilst if fluid is pumped into the jack the distance between the pivot points 47 and 52 increases to tip the trailer as in Fig. 9. In yet a further embodiment, the rectangular corners of the foredeck are removed to provide more room for the tractor wheels, and the flaps are hinged to the oblique edges.
Patent GB-1140227-A (GB)
Title: Electric lamp having an envelope of transparent aluminium oxide
IPC: C04B37/00
Filed: 1966-03-11
Abstract: 1,140,227. Metal-ceramic seals. PATENTTREUHAND GES. FR ELEKTRISCHE GLHLAMPEN m.b.H. 11 March, 1966 [11 March, 1965], No. 10782/66. Heading B3V. An electric lamp, e.g. an alkalimetal vapour discharge lamp comprises an envelope 1 of transparent sintered alumina the ends of which are each fused to a ceramic closure or one of metal 4, 5 having a ceramic layer 2, 3 against the envelope, the ceramic closure, or the ceramic layer, or at least the portion thereof adjacent the envelope being composed of at least 90% by weight of aluminium oxide and a maximum of 10% of another metal oxide, such that the composition has a eutectic point above 1700 C. and below that of the alumina of the envelope. The other oxide may be magnesium oxide below 5% by weight, e.g. 2%, thus lowering the m.p. by more than 100 C. Additions of beryllium oxide of less than 10%, e.g. 7%, lower the m.p. by more than 200 C. End closures of niobium may be fused to the transparent alumina envelope 1 during a fusion period of one to two minutes at 1900 C. Electrodes 6 and 7 pass through the seals.
Patent GB-1106405-A (GB)
Title: Improvements in or relating to golf practice devices
IPC: A63B69/36
Filed: 1966-03-11
Abstract: 1,106,405. Golf practice device. W. M. LEES. 8 March, 1967 [11 March, 1966], No. 10802/66. Heading A6D. A device, for simulating the feel of golf play from a fairway, comprises a frame, a surface defining means 14, and beneath the latter a resilient support means 19, 20, the surface defining means being retained under tension by location means at opposite sides of the frame. In the embodiment shown in crosssection, tubes 14 of are reinforced polyvinyl chloride, preferably with a slightly undulating outer surface, which are supported by plastics mesh 19 and foamed plastics material 20 (e.g. of polyester); webbing straps 21 are attached to the frame of which longitudinal sides 2, 3 and guide tubes 18 are shown.
Patent GB-610494-A (GB)
Title: Improvements in or relating to die casting
IPC: B22C9/10
Filed: 1946-04-08
Abstract: 610,494. Moulders' cores. WHEELER, M. A. April 8, 1946, No. 10804. [Class 83 (i)] To overcome the cracking of castings due to their contraction around the cores used, a hollow metal core 6 is employed, the material and wall thickness of which is chosen to retain its strength until the casting solidifies and then deform plastically as the casting cools down to the point at which the core may be removed. The core 6 is chilled locally by a block 7 held in place by a spring 8 or other means which will permit the block 7 to move inward as the casting contracts. The core may be cooled in the initial stages by passing air or other fluid through it. For alloys which melt at very high temperatures, between 900‹ C. and 1500‹ C., mild steel is a suitable core material, for lower melting points copper cores may be used.
Patent GB-686190-A (GB)
Title: Improvements in and relating to the treatment of artificial threads, filaments, fibres and the like filamentary articles
Inventor: CARPENTER ALBERT STANLEY
IPC: D06M13/11
Filed: 1950-05-03
Abstract: The dimensional stability of polythiourea filaments, fibres, threads and ribbons is improved by treating them with an epoxy compound, e.g. epichlorhydrin, glycidol or ethylene oxide, and then washing and drying.  Treatment is effected by immersing the threads in a liquid epoxy compound or an aqueous solution of an epoxy compound. Specifications 524,795, 534,699, 660,905 and 669,059 are referred to.
Patent GB-728627-A (GB)
Title: Improvements in multi-spindle duplicating wood turning lathes
IPC: B27C7/00
Filed: 1953-04-21
Abstract: 728,627. Wood-turning lathes; copy-turning. GEIGER, R. April 21, 1953, No. 10955/53. Class 83 (3). A multi-spindle duplicating wood turning lathe comprises a number of tool shafts 6 inclined to the longitudinal axes of the workpieces, the tools being axially adjustable. The carriage 1 carrying the tools is fed in a direction at right angles to the axes of the workpieces, such as 2, supported between centres 3, 4. To allow for slight differences in the diameter of the tools 5, the ball-races 7, supporting the shafts, are adjustable longitudinally by nuts 12. Play in the bearings is taken up by a screwed sleeve 15. Instead of setting the shafts at an angle, as shown, the carriage may be displaceable at an angle to the axes of the workpieces. One of the shafts may be non-adjustable.
Patent GB-709542-A (GB)
Title: Improvements in or relating to photographic contact printing apparatus
Inventor: BUNGAY JEFFERY ARTHUR
IPC: G03B27/22
Filed: 1952-05-01
Abstract: 709,542. Photographic contact printing apparatus. HALL HARDING, Ltd. April 14, 1953 [May 1, 1952], No. 11014/52. Class 98(2) In contact printing apparatus in which a lighttransmitting cylindrical or part cylindrical printing platen 2 is mounted for turning about its axis and a tensioned blind 18 is provided for holding the light-sensitive material and the original thereon, the printing light source being positioned within the platen, spring means 12 are provided acting on the platen in opposition to the tension applied by the blind. Preferably the difference between the forces exerted on the platen by the spring and the blind are insufficient to overcome the friction in the platen bearings. As shown, the platen is a glass drum 2 with a metallic end flange 4 mounted on rollers (not shown) in an end support 6 secured to the base 8 and is rotatable by a hand wheel 10 secured to the end of the drum and the blind is tensioned by a spring roller 20, while the spring 12 which is secured to the drum flange 4 at 14 and to the end support is a flat helical spring.
Patent GB-364466-A (GB)
Title: Method of making fibrous substances impermeable to fluids
IPC: D21H17/14
Filed: 1931-04-14
Abstract: 364,466. Waterproofing. RYDEBERG, E. T., Liljeholmen, Sweden. April 14, 1931, No. 11034. [Classes 76 and 140.] Fibrous substances such as leather and cardboard are rendered impermeable to fluids by forming within the substances a factice by impregnating them with a mixture of vulcanizable oils such as boiled linseed oil and sulphur monochloride, the quantity of the latter being insufficient for complete vulcanization, and afterwards subjecting the substances to the action of a further quantity of sulphur monochloride to complete the vulcanization. The oil mixture and the sulphur monochloride are preferably diluted with benzine or benzol and the hydrochloric acid formed during the process is neutralized by washing the product with soda solution.
Patent GB-581836-A (GB)
Title: Improved means for feeding paper to the rollers of calendering machines or apparatus
IPC: D21G9/00
Filed: 1945-05-02
Abstract: 581,836. Feeding and registering webs. HALL & KAY, Ltd., KAY H., and HALL, S. May 2, 1945, No. 11057. [Class 100 (i)] A web of paper is guided into the nip of a pair of the rollers of a calendering machine by a blast of air which passes from a fan 7 to an air-distributing box 6 provided with a controlling damper 9 and with an outlet 8 from which the air passes over a hinged guide plate 10. To prevent improper deflection of the web due to rebound of air from the rollers, the lower part of the plate 10 is formed with perforations 13 which are controllable by a hinged regulator 14. A perforated grid 16 is fitted at the bottom of the plate 10. To ensure an even blast the box 6 is fitted with curved vertical divisions 17, and the outlet passages are fitted with vertical baffles 19 of channel section which subdivide the outlet 8 into a series of passages. In a modification the air distributing box 6 is arranged horizontally, and the form of the guide plate 10 made straight instead of curved.
Patent GB-498982-A (GB)
Title: Improvements in or relating to tubular boilers heated by exhaust gases
IPC: F22B1/18
Filed: 1938-04-12
Abstract: 498,982. Heating water. DELANEY, C. T., and GALLAY, Ltd. April 12, 1938, No. 11127. [Class 64 (iii)] A water heater in the exhaust pipe of an internal-combustion engine and consisting of tubes c connected to headers a, b, is removably secured by a flange d formed on one of the headers and secured to the pipe by screwed studs or bolts e. The tubes may be curved to correspond with the curve of the exhaust pipe.