baber/WOPTO huggingface dataset:
Patent GB-503056-A (GB)
Title: Improved circuit comprising gasfilled discharge tubes connected in parallel
IPC: H05B41/18
Filed: 1938-06-13
Abstract: 503,056. Discharge apparatus. NAAMLOOZE VENNOOTSCHAP PHILIPS' GLOEILAMPENFABRIEKEN. June 13, 1938, No. 17568. Convention date, June 15, 1937. [Class 39 (i)] In starting circuits for two or more gas or vapour filled discharge tubes 1, 2 connected in parallel and each in series with an inductance 24, 26, a common switch 11 opened during operation of the tubes bridges the tubes and is connected in series with part at least of each of the inductances 24, 26 through a current limiting device 10, 13. As shown, each tube is in series with two inductances 24 and 25 or 26 and 27 arranged on a common core so as to be magnetically coupled and the devices 10, 13 are resistances connected to the centre points of the inductances 24, 26. At starting, the switch 11 is closed and then opened and produces a voltage impulse in the upper half of the inductances 24, 26, a higher voltage impulse being induced in the remainder of the inductances to start the tubes. The electrodes 28 .. 31 have heaters connected to a few turns of the inductances and are heated, to facilitate starting of the discharges, by the currents induced in these turns by current flow through the inductances 24, 26 when the switch 11 is closed. Asymmetry in the parallel discharge paths results in current flow across resistances 10, 13 when the tubes 1, 2 are running, but this may be reduced by dimensioning the resistances or avoided by replacing the resistances by auxiliary discharge devices ceasing to conduct after the switch 11 is opened. The switch 11 may be in series with the whole of the series inductances of the tubes 1, 2 and the current limiting devices at 10, 13 may also be inductive or capacitive ; in the latter case, the tubes may start with the switch 11 closed if these capacities are tuned to the series inductances. Specification 435,786, [Group XXXV], is referred to.
Patent GB-118951-A (GB)
Title: Improvements in Nut Blank Forming Machines.
Inventor: HOLLINGS ERNEST
IPC: B21K1/64
Filed: 1917-11-28
Abstract: 118,951. Hollings, E. Nov. 28. 1917. Baths.-For lubricating a cam shaft which operates a hollow rocking lever 37 for actuating a punch slide of a nut-blank forging-machine, the lever is formed with a chamber 43 forming an oil bath from which oil is taken up by cams on the shaft.
Patent GB-615929-A (GB)
Title: Improvements in and relating to a lifting device
IPC: B66F7/02
Filed: 1946-06-12
Abstract: 615,929. Load-handling apparatus. VILLARS, J. June 12, 1946, No. 17590. Convention date, March 14. (Class 78 (iii)] A lifting device comprising lifting arms, each connected at one end to a lifting mechanism housed in a support, is characterised in that each arm is connected rigidly to a sleeve which is moved vertically in the support by the lifting mechanism, the member rigidly connecting the arm to its sleeve moving along a slot in the support completely covered by the sleeve, and the sleeve being guided by rollers at its ends engaging the inner wall of the support. In the embodiment shown, rails 2 for supporting a motor vehicle are connected at their ends to a pair of arms 1 carried by members 17 on sleeves 13, each of which is raised and lowered in a housing 4 by a screw 6 engaging a nut 12 attached to the sleeve. Both screws are connected through gearing 8, 9 to a shaft 10 driven by an electric motor 11. Each member 17 moves along a slot 16 in its housing 4, whilst each sleeve 13 is guided by rollers 14, 15 engaging the inner wall of its housing. The lifting mechanism may comprise a cable and pulley, a rack-and-pinion or a hydraulic jack.
Patent GB-642227-A (GB)
Title: Improvements in amplifier circuits
IPC: H03F3/54
Filed: 1948-06-30
Abstract: 642,227. Valve amplifying circuits. RADIO CORPORATION OF AMERICA. June 30, 1948, Nos. 17654 and 17655. Convention dates, Aug. 21, 1947. [Class 40 (vi)] A transmitting amplifier comprises two similar vacuum tubes each of which includes first, second, and third electrodes, a connection for energy of the operating frequency from ground to the first electrode, another connection for energy at the operating frequency between the second electrodes of the tubes, a source of radio frequency energy coupled to the second connection, and tuned circuits individually coupled with the third electrodes and coupled to a common load. In Fig. 6, amplifier tubes 1, 2 have their grids grounded for radio frequency. The input circuit 9 is coupled through an impedance matching circuit in the form of a coaxial unit comprising adjustable capacity and inductance 10, 11, and capacities 12, 13 to the cathodes. The anodes are connected to individual adjustable coaxial resonators 20, 21 having output loops 22, 24 fed to a coaxial feeder 28 and a common load. The cathode heater leads include chokes 6 in the form of quarter-wave coaxial lines. A rectifier and meter A are connected in the output circuit so as to measure only the circulating current. The tuning of the output circuits is adjusted to give a minimum, the outputs from the two valves are then in phase. Modifications are described in which the cathode is grounded and the input is applied to the grid, and in which the anode is grounded and the output is taken from the cathode.
Patent GB-319069-A (GB)
Title: Improvements relating to rubber overshoes or the like
IPC: A43B3/16
Filed: 1928-06-19
Abstract: 319,069. Liverpool Rubber Co., Ltd., and Davies, I. W. June 19, 1928. Heels; overshoes. - The sunken heel 1 of a rubber overshoe is formed with an extension 2 of its tread surface. This extension consists of a tongue or strip at the inside of the shoe extending below the arch and serving as a support when walking.
Patent GB-421289-A (GB)
Title: Improvements in or relating to the treatment of sulphur-dioxide-containing gases
IPC: C01B17/60
Filed: 1933-06-21
Abstract: A mixture of a reducing gas and sulphur dioxide, suitable for the recovery of elementary sulphur by reduction, is obtained by treating sulphur dioxide containing gases, e.g. gases from the roasting of sulphide ores, with water and then expelling the dissolved sulphur dioxide from the resulting solution by bringing it into contact with the reducing gas.  The reducing gases referred to are producer gas, water gas, coke-oven gas, and natural gas.  The absorption and expulsion of the sulphur dioxide may be conducted at the same temperature, the transfer of the sulphur dioxide being effected without change in concentration, or the temperature of the expulsion stage may be higher to produce a mixture more concentrated in sulphur dioxide.  Both stages may be conducted by passing the gases and the liquid in counter-current. The Provisional Specification describes also the use of other gases such as air in the expulsion stage, the mixture of air and sulphur dioxide obtained being employed, for example, for the production of sulphuric acid or in place of air in the calcination of sulphide ores such as pyrites.  British Specifications 203,722, [Class 1 (ii)], and 349,287 and U.S.A. Specifications 1,823,372 and 1,901,416 are referred to.
Patent GB-336251-A (GB)
Title: Process for the manufacture of anhydrous sodium sulphide
IPC: C01B17/28
Filed: 1929-06-10
Abstract: 336,251. Carpmael, A., (I. G. Farbenindustrie Akt.-Ges.). June. 10, 1929. Anhydrous sodium sulphide is obtained by raducing sodium sulphate in the mass with hydrogen or other gaseous reducing agent at such temperatures, say 500-600‹ C., that the mass is maintained in the solid state throughout the reaction. Reaction may be accelerated by the addition of a small percentage of sodium sulphide or the crude melt obtained in its manufacture, caustic soda, sulphur, or iron or nickel or mixtures or compounds thereof. Specifications 11846/87, 27477/10, and 12657/11 are referred to.
Patent GB-850932-A (GB)
Title: Method and appatarus for forming nonwoven fabric
IPC: D04H1/70
Filed: 1957-06-04
Abstract: 850,932. Agglutinated fibrous materials. HARMON, C., PLUMMER, C. H., and SMITH, J. H. June 4, 1957 [June 6, 1956], No. 17790/57. Classes 96 and 140. A method of forming a non-woven fabric comprises passing streams of a gas carrying particles of bonding-material in a substantially non-adhesive state into a layer or layers of relatively loosely-assembled intersecting fibres in a predetermined pattern, depositing the particles in areas of the fibrous layer corresponding to the pattern by the filtering action of the fibres and activating the particles to make them adhesive and thereby form bonds with the fibres. Specified bonding materials are ethyl cellulose, nylon, polyvinyl chloride, polyvinyl acetate, polyvinyl butyral, polyvinyl formal, and cellulose acetate. Natural fibres of animal or vegetable origin or artificial fibres such as nylon or regenerated cellulose may be used. The or each layer may be produced by carding, garnetting, air-laying, or paper-making methods In an illustrated embodiment (Fig. 3) a fibrous layer 16 supported on a foraminous flexible backing screen 17 is brought into contact with the surface of an apertured distributing drum 14 and passed under a transfer duct 18 through which there is passing an air stream carrying thermoplastic binder particles 19. The surface of the drum 14 (as shown in Fig. 5A) comprises apertures 15 spaced apart from one another and arranged in a regular pattern. As the air carrying the particles approaches the inner surface of the drum 14 (as shown in Fig. 5) it forms into a number of individual streams 21 which pass through the apertures 15 in the drum, then through the fibrous layer 16 and finally through the backing screen 17. The particles are filtered out of the air by the fibres to form deposits 22 of the particles in areas corresponding to the arrangement of the apertures 15 in the drum. A vacuum duct 104 is positioned directly under the lower end of the transfer duct 18. The drum is caused to rotate by the travel of the belt 17. After leaving the distributing drum the fibrous layer is carried, on the backing belt, beneath a bank of radiant heaters (not shown), whereby the binder particles are activated, and then through the pressure-nip formed between a pair of heated bonding rollers (not shown). Before passing between the bonding rollers the layer 16 with the binder on it may be plied with a similar fibrous layer (not shown), the side of the layer 16 carrying the binder being in contact with the second layer. The product is a non-woven fabric such as shown in Fig. 7, wherein bonds 26 are formed in the fabric 25.
Patent GB-350722-A (GB)
Title: Improvements in or relating to drive transmission gears of the bevel differential type
IPC: F16H1/28
Filed: 1930-06-10
Abstract: 350,722. Reducing-gearing. FARMAN, H. and FARMAN, M., (trading as FARMAN, H. ET M.), 149, Rue de Silly, Billancourt, Seine, France. June 10, 1930, No. 17808. Convention date, July 1, 1929. [Class 80 (i).] An epicyclic reducing gear specially suitable for aeroplane propellers moves axially with the driven shaft 6 when play has developed owing to wear, the gears remaining properly in mesh. Planet gears 4 on arms 5 on shaft 6 mesh with a side gear 3 and with a non-rotary gear 7. The gears 3, 7 have splined connections 3a, 7a with driving shaft 2 and a fixed casing member 8, respectively. Gear 7 is supported upon a swivel thrust bearing 13 supported in turn by an abutment 14 which is clamped to shaft 6 between a fixed shoulder 17 and the shaft race 16<1> of the propeller thrust bearing 16. There may be a packing 15 between elements 14, 161. Gear 3 is supported from shaft 6 by bearing 11 and abutment 12. Thus the gear train moves along with the propeller shaft 6 when the thrust bearing 16 wears loose.
Patent GB-595987-A (GB)
Title: Improvements in or relating to helicopters
IPC: B64C27/82
Filed: 1945-07-12
Abstract: 595,987. Helicopters. FAIREY AVIATION CO., Ltd., and BENNETT, J. A. J. July 12, 1945, No. 17831. [Class 4] A helicopter comprises an auxiliary lifting rotor in tandem with, and astern of, the main rotor, the tip-path plane of the auxiliary rotor being inclinable forwardly and laterally by means of cyclic pitch control of the blades thereof so that the resulting forward and lateral components of thrust may be utilized for forward propulsion and balancing the reaction torque of the main rotor. The axis of the main rotor may be inclined laterally so that the lateral component of the main rotor thrust balances the lateral component of the auxiliary rotor thrust in hovering flight. Control of rolling or pitching may be effected by cyclical adjustments of the pitch of the main rotor blades. Changes in the longitudinal position of the centre of gravity may be compensated for by a collective adjustment of the pitch of the auxiliary rotor blades. The axis of the main rotor may be displaced laterally from the centre of gravity so that a cyclical adjustment of blade pitch is required for lateral balance. As shown, the main rotor b is driven from a power unit d through a gear-box e and shaft f, and the auxiliary rotor c is driven in the opposite direction through a shaft g, gear-box h and shaft j. The blades of rotor b are mounted on a hub k without freedom to " flap " or " lag," but are arranged for collective and cyclical pitch control by means of a linkage m. The blades of rotor c are mounted on flapping pivots and blade-pitch may be adjusted collectively or cyclically by a linkage 17. The linkages m and 17 are actuated for collective pitch control by a lever n, links p and 14, bell-crank levers r and 15 and links s and 16. Lever r is also coupled by a link 30 to the engine throttle 31. Longitudinal cyclical pitch control of the blades of rotor b is effected through a link w, bellcrank lever x and link y by fore and aft movement of a lever u. Lateral movement of the lever u is transmitted through a torque tube 11 and link 13 to effect lateral control. Longitudinal cyclical control of rotor c is effected by means of a lever 18, link 20, bell-crank lever 21 and link 22, and lateral control by means of a rudder bar 23, links 25, 26 and 27, bell-crank lever 28 and link 29.
Patent GB-447581-A (GB)
Title: Improved tube rolling mill for the manufacture of tubes for barrels for rifles, guns and the like
IPC: B21B17/06
Filed: 1935-06-21
Abstract: 447,581. Rolling tubes. SOC. D'ETUDES INDUSTRIELLES POUR L'EXPLOITATION DE PROCEDES SPECIAUX POUR LA FABRICATION DES CORPS CREUX EN DIVERS METAUX, 19, Rue de Lubeck, Paris. June 21, 1935, No. 17833. Convention date, May 28. [Class 83 (iv)] Tubes for rifle barrels, guns, &c. are formed between rotating pilger rolls 5 with flywheels 7 on their shafts and the roll bearings are spaced apart by elastic washers 8. The mandrel 22 is provided with cooling water through a perforated jacket 21. To operate, pressure fluid admitted to the cylinders 16 first moves the mandrel carriage 19 to the right and after placing a billet between the rolls the fluid flow is reversed and returns the carriage 19 with its mandrel 22, which urges the billet to the left against the roll thrust, an abutment screw 11 on the other side of the rolls, with hand adjustment 12, limiting this urge of the billet to the left. As the rolls during working at each bite on the billet drive the mandrel and carriage 19 to the right, so the cylinders and pistons 17, 16 return it to the left. The mandrel is gradually fed into the work by a ratchet 36 and pawl 35 which rotates the feed screw 36 in the carriage 19, this drive being taken from the roll shaft through bevel gears 30 and shaft 31 driving a crank-wheel 32 in the carriage operating a connecting-rod 33 which oscillates a sleeve 34 carrying the pawl 35. The feed can be suspended by a bridge piece screwed down by hand wheel 41 to pivot the pawl 35 out of engagement with the ratchet 36. The bridge piece is held up by a pin slid below its crown by a hand lever. The carriage stroke to the right is cushioned by hydraulic .buffers 24. The carriage 19 is also supported by a wheel running on a guide bar 29.
Patent GB-581617-A (GB)
Title: Improvements in and relating to devices for use with pencils, pens or the like
IPC: B43K29/00
Filed: 1944-09-19
Abstract: 581,617. Mathematical compasses. McALLISTER, J. Sept. 19, 1944, No. 17857. [Class 97 (iii)] Compasses comprise a clip 1 for a pencil 2, the clip having pivoted thereto at 6 a leg 5 in such a way that the leg may be swung to either side of the pencil in a plane parallel to that of the axis of the pencil. To use the pencil as a compass, the clip is slid down the pencil until the point of the leg coincides with that of the pencil when the leg may be opened out to the required extent.
Patent GB-881324-A (GB)
Title: Improvements in or relating to the treatment of textile fibres
IPC: D01G29/00
Filed: 1957-06-05
Abstract: <PICT:0881324/IV (c)/1> <PICT:0881324/IV (c)/2> <PICT:0881324/IV (c)/3> Textile fibres are fed continuously to an oilin means, the rate at which they are fed is continuously detected and the rate at which oil is supplied to the oiling means is varied automatically according to the detected rate of feed of the fibres.  As shown in Fig. 1 of the Figure accompanying the Provisional Specification, apparatus for continuously oiling textile fibres comprises means for continuously feeding the fibres to an oiling means 16, e.g. a hopper 12, feed lattice 13 and opener 14 the oiling means 16 preferably being provided with a nozzle or nozzles, detector means 19 responsive to the rate of supply of fibres to be oiled and control means operated by the detector means for causing the rate of oil supplied by the oiling means to be substantially in accordance with the detected textile fibres supply rate.  A fan 17 may create the suction necessary to convey the fibres.  The thickness of a layer of fibres on feed lattice 13 is a measure of the rate at which the fibres are supplied to oiling means 16.  A shaft 18 mounted for rotation about its axis and coupled to control means for supply of oil has a detector 19 mounted thereon. Referring to Figs. 2 and 3 of the Figure accompanying the Provisional Specification a shaft 21 of a valve mechanism for adjusting supply of oil may be connected to shaft 18 by any suitable linkage.  Shaft 21 passes through an oil seal gland 22 in the valve mechanism and carries a disc 24 formed with a crescent shaped opening 30 increasing in width from one end to the other. Disc 24 is rotated by shaft 21 in accordance with the thickness of fibres on lattice 13.  As the disc 24 rotates the width of an opening 30 overlying a slot 31 varies and thereby permits oil to escape from space 28 to an outlet 32 at a rate which is dependent on the angular position of disc 24 and hence the thickness of fibres on lattice 13. In a modification (not shown) a device is provided to avoid continuous variation of oil flow to correspond with small and short term variations in fibre thickness. Specifications 740,889, 745,080 and 881,325 are referred to.
Patent GB-126326-A (GB)
Title: Improvements in Fuzes for Projectiles.
Inventor: MANSELL JOHN HERBERT
IPC: F42C15/26
Filed: 1916-12-13
Abstract: 126,326. Mansell, J. H., and Reincke, H. A. Dec. 13, 1916. Projectile fuses.-Relates to percussion fuses in which firing is effected by an air-balanced piston, and consists in (1) providing a spring to move the piston forward when it is released by a slight movement of the piston due to air-pressure, and (2) providing special means for preventing movement of the piston until the projectile is clear of the gun. In the construction shown, a piston C fitting loosely in the fuse-body A carries a cap R and pellet E, while a firing-pin S is mounted on a perforated diaphragm F. The piston has a ring K normally holding pivoted catches L in engage. ment with a bevelled collar M which is subject to the pressure of a spring N. In front of the piston is a ring O cut away to form spring tongues P, Fig. 2, which carry weights Q, adapted to hold the piston at " safe " until centrifugal force moves them outwardly into recesses V. This movement cannot occur during the acceleration period of the projectile's flight. If the nose of the fuse strikes against the fabric of aircraft, the holes in the diaphragm F are closed, and airpressure behind the piston moves it slightly forward. This releases the catches L and consequently the collar M, so that the spring N forces it against the piston, carrying the piston with the percussion cap R on to the firing-pin.
Patent GB-354917-A (GB)
Title: A milk preparation and a process for producing same
IPC: A23C9/18
Filed: 1930-06-11
Abstract: A milk preparation is obtained by forming a mixture of dried milk powder and sugar, adding milk or milk and water, stirring the mixture to form a creamy mass, and evaporating part of the water in vacuo to obtain a doughy mass which is then moulded, forming when cool a substantially solid product.  The milk or milk and water may be heated to 140 DEG  F. before addition to the mixture, to which may also be added an emulsifying or binding agent such as agar or sodium citrate.  The milk added is preferably in condensed form, sweetened or unsweetened.  Specification 350,670 is referred to.
Patent GB-637666-A (GB)
Title: Improvements in grinding and like machines and particularly machines for grinding toric lenses
IPC: B24B13/02
Filed: 1947-07-08
Abstract: 637,666. Grinding lenses &c. TAYLOR, D. July 8, 1947, No. 17958. [Class 60] In a method and apparatus for grinding a compound surface on workpieces, such as toric lenses, the lenses 6 are carried on a rotating drum 2 and a grinding wheel 1 is traversed across them in a plane tangential to the drum and in a direction at right angles to the rotation of the drum, the axis of rotation 3 of the wheel being inclined to the direction of traverse and the wheel contour being shaped in accordance with this inclination. The surface of the wheel is initially formed by a tool having the required curvature of the lens to be ground and the rotating wheel is traversed across the tool in the same way as during actual use. The apparatus described comprises a plate 7 for attachment to the slide of a milling machine which carries the drum 2 on its spindle 13, the plate carrying the grinding wheel 1 and its driving motor 11 and being locked, after adjustment about a pivot below the centre of the grinding wheel, by means of bolts in slots 12.
Patent GB-298265-A (GB)
Title: Improvements in gas-meters
IPC: G01F15/00
Filed: 1927-07-06
Abstract: 298,265. Metropolitan Gas Meters, Ltd., and Forster, J. D. July 6, 1927. Counters actuated by revolving mechanism; stop mechanism.-The device described in Specification 298,099 is modified to render it more suitable for use in gas meters of the open top type by forming the spindle carrying the slotted disc e operating the gas inlet valve e<2> in two telescoping parts f<1>, f<2>, the part f<2> being mounted in a gas-tight bearing f<4> provided in the fixed wall A<1> of a casing enclosing the mechanism and the part f<1> carrying the worm-wheel c<2> and pointer a being movable axially against the resistance of a spring f<3> when the pointer a is to be re-set relatively to the stop-pin on the pointer d. A pin h on the worm wheel c<2> engages a slotted disc g on the part f<2> so that the two parts of the spindle rotatetogether.