baber/WOPTO huggingface dataset:
Patent GB-574729-A (GB)
Title: Improvements in and relating to engineers gauges
IPC: G01B5/207
Filed: 1944-02-14
Abstract: 574,729. Protractors. CRAIG, H. Feb; 14, 1944, No. 2725. [Class 97 (iii)] [Also in Group XIX] An adjustable outline gauge which may also be used for checking angles comprises a rectangular box-like holder a having one face b of a transparent material engraved with various scales m, w, q, t, and containing a number of feelers e (Fig 4, rear view) capable of independent parallel movement, so that the ends of the feelers may be made to conform to the outline or angle, and the inner ends of the feelers, or a transverse line thereon, will indicate the contour or angle on one of the scales. The gauge is intended primarily for checking contours of welded joints, but may also be used for checking the bevel angle of the edges of plates prepared for butt welding by comparison with the lines w engraved at 30 and 35 degrees to the centre line.
Patent GB-751112-A (GB)
Title: Improvements in or relating to amplifying circuits embodying transistors and discharge tubes
IPC: H03F5/00
Filed: 1954-01-29
Abstract: 751,112. Semi-conductor devices. PHILIPS ELECTRICAL INDUSTRIES, Ltd. Jan. 29, 1954 [Feb. 3, 1953], No. 2770/54. Drawings to Specification. Class 37. [Also in Group XL (c)] In a transistor in which the collector current varies as the two-thirds power of the base current, an N-type germanium crystal is sandwiched between a suitable material such as indium. After heating for a predetermined time at 500‹ C., zones of opposite conductivity are produced by a diffusion or segregation process and these approach one another and are spaced by a small distance, preferably smaller than the characteristic diffusion length of the minority carriers in the intermediate crystal material. The transistor may be used in cascade with a discharge tube biased near cut-off to give a three halves power law (see Group XL (c)).
Patent GB-905465-A (GB)
Title: Dye-receptive graft copolymers, method for preparing same and shaped articles fabricated therefrom
IPC: D06M14/32
Filed: 1959-01-27
Abstract: Dye-receptive graft copolymers comprise an acrylonitrile polymer substrate which contains in the polymer molecule at least 80% by weight of acrylonitrile having attached thereto a minor proportion of graft polymerized units having dye-receptive properties derived from N-vinyl lactams, N-vinyl-3-morpholinone, sulphonated alkenyl aromatic monomers, sulphonated olefines, aminated alkenyl aromatic monomers, aminated ethyl acrylate or methacrylate and alkenyl aromatic polyglycol ether monomers, and mixtures of such compounds with one another and with other monomers, e.g. acrylamides.  The graft polymerization process is advantageously applied to polyacrylonitrile in shaped form, especially in the form of equagel fibres which are impregnated with aqueous solutions of the monomers and then polymerized by means of free-radical polymerization catalysts or high energy irradiation.  The resulting graft copolymers are dye-receptive. Specifications 758,937 and 805,513 are referred to. Reference has been directed by the Comptroller to Specifications 805,513 and 843,063.
Patent GB-1024181-A (GB)
Title: Method and apparatus for damping vibrations
Inventor: CARLSTEDT RAGNAR LEONARD
IPC: F16F15/10
Filed: 1963-01-23
Abstract: 1,024,181. Lathes; machine-tool details. KENNAMETAL Inc. Jan. 23, 1963, No. 2886/63. Headings B3B and B3T. [Also in Division F2] A method of inhibiting vibration of a member comprises transmitting to the member impacts at a frequency differing from the frequency of the vibrations. Axial or radial vibrations of a rotating member, e.g. a workpieee, axle, gear, drum or rotor, may be damped, or vibrations of a non-rotating member such as a workpiece being drilled. Vibrations of the work 16 in a lathe having a cutting tool 18, Figs. 2 and 3 (not shown), are damped by a device including a tube 32 housing rings or discs 36 and rotating between centres 30 by contact between a wheel 34 and the work. Vibration of the work causes the tungsten-nickel-copper alloy discs 36 of different diameters to chatter in the tube, producing impacts which damp the vibrations. A yoke 28 supporting the damper pivots on a bracket 26 on the tool-carriage 22, and the wheel is applied against the work by gravity or a spring, or by a fluid-pressure jack, Fig. 4 (not shown). A peripheral-speed indicator 80 is also carried by the bracket 26. The wheel may engage the top or bottom of the work at a position ahead of or behind the tool 18. If the damper wheel 34 is arranged angularly to the work, e.g. in engagement with the shoulder being turned, longitudinal vibrations may also be suppressed. In a modification, Fig. 5 (not shown), the spring, or fluid, applied damper 62 is not rotated by the work 66, which it engages by means of a nylon pad 64. A milling-cutter 76, Fig. 6 (not shown), is engaged by a spring, or fluid, applied rotatable damper 78.
Patent GB-556522-A (GB)
Title: Improved means for securing fittings to containers for fluids
IPC: B64D37/00
Filed: 1942-03-05
Abstract: 556,522. Storing gases under pressure. SHAKESBY, L., SUTHERLAND, C. A. R., SMITH, S. H., and IMPERIAL CHEMICAL INDUSTRIES, Ltd. March 5, 1942, No. 2900. [Classes 8 (ii) and 99 (i)] [Also in Groups XXIX and XVII] Relates to means for securing fittings, such as filler caps, inspection covers and outlet fittings, to fuel and oil containers for aircraft &c. or other liquid or gas containers, of the kind in which the material of the container adjacent an aperture therein is clamped between rigid inner annular member and a rigid outer annular or plate-like member' by nuts engaging bolts passing through aligned apertures in said members, and consists in forming said apertures oversize with respect to the shanks of the bolts, and providing locking means in association with the inner member and the heads of the bolts, said locking means during assembly permitting limited rotary and/or longitudinal movement of the bolts, sealing means being also provided to ensure liquid-tight joints between the inner member and the bolts. In Fig. 2, a flexible fuel container comprises an inner layer 1 of treated fabric impervious to liquid fuel, a layer of swellable rubber composition and an outer fabric layer 3, an aperture therein being reinforced by adhesively securing to the layer 1 a ring 5 of similar fabric. The layer 1 and ring 5 are secured between an inner ring 6 and a ring 7 by counter-sunk head bolts 8, self-locking nuts 10 and washers 11. A sealing-ring 12 is placed between the ring 7 and the flange 13 of an outlet tube 14. Hexagon-headed bolts 15 pass freely through the parts 6, 5, 1, 7, 12, 13, and have sealing washers adjacent their heads which are locked by lugged caps 17 held by rivets 19, self-locking nuts 22 holding the parts together. A clamp ring 23 is then-threaded over the bolts 15 with its turned-up edge engaging the fabric layer 3, self-locking nuts 25 holding the ring 23. In another form, the caps 17 are replaced by a ring rivetted to the ring 6 and having portions bridging the heads of the bolts 15 and engaging opposite flats thereon. In a further form, the ring 6 is of channel section, the channel sides engaging the bolt-heads to prevent rotation thereof, longitudinal movement of the bolts being prevented by hammering in the channel sides or providing a ring to close the channel. When applied to a metal container, the ring 7 may form part of the fitting.
Patent GB-490004-A (GB)
Title: Improvements relating to the extrusion of viscous, plastic or fluid materials
IPC: A23G3/20
Filed: 1937-02-01
Abstract: 490,004. Moulding confectionery. HENKEL, A. A. Feb. 1, 1937, No. 2926. [Class 87 (ii)] Filled confections are produced by forming and feeding lengthwise a tube of sugar and intermittently delivering a plastic or fluid filling into the tube to produce over-filled and slack-filled sections alternately, the overfilled sections being then worked down or allowed to contract. The filled tube is then cut into pieces and stamped in dies. The sugar &c. is moulded on the surface of a tube 8 by means of conical rollers of known type and is moved endwise by rollers 27. The filling material, such as sugar syrup or jam, is fed from a hopper 1 through a grille 2 into the cylinder 5 of a piston pump. The piston 4 acts as a valve to the base of the hopper and forces the filling through a valve 6 into the tube 8 forming nodes 26 in the sugar tube. The piston passes through packing rings 13 to which water is supplied from tank 14 to wash away sugar crystals. The pump is driven by a crank 18, bell-crank lever 20, and link 21. The pivot 22 of the lever 20 is mounted on a lever 24 whose position can be adjusted to vary the distance by which the piston 4 travels into the cylinder 5 and thus vary the supply of filling. A diaphragm pump may be used instead of a piston pump. Further rollers such as the rollers 27 may be provided to roll down the nodes 26.
Patent GB-683298-A (GB)
Title: Improvements relating to spray nozzles
IPC: B05B1/30
Filed: 1950-02-06
Abstract: 683,298. Spray-producers. WALKER, R., and COOKE, W. A. Feb. 2, 1951 [Feb. 6, 1950], No. 2975/50. Class 69 (iii). A nozzle includes a tubular member 1 with a rod 6 sliding therein and comprising a conical projection 7 and a sleeve 9 of rubber or soft metal. The rod is normally urged forwardly by a spring 12 so that the sleeve engages a flange 3 to close the nozzle outlet. A cap 16, which contains a plug 17 with a threaded bore in which screws a rod 19 with a helical passage in its surface leading to an outlet 18, is screwed to the nozzle. A pivoted lever 13 pulls the rod rearwardly to open the nozzle outlet, and a nut 15 may hold the rod in the open position.
Patent GB-1522773-A (GB)
Title: Low impedance electron beam controlled discharge switching system
IPC: H01T2/02
Filed: 1977-01-25
Abstract: 1522773 Cold cathode tubes R O HUNTER 25 Jan 1977 [4 Feb 1976] 02978/77 Heading H1D A high speed, high current, high voltage switch comprises two electrodes 16, 17 in a gas at pressure at least 0À1 atm., preferably near 1 atm., the electrode gap making secondary ionization negligible at working voltage: ionization is initiated and determined by an electron beam entering the gas chamber 13 via a window 30. The gas may be a rare gas plus a trace of molecular gas, e.g. A+ 1-5% CO 2 , or it may be CH 4  or BF 3 , to provide the required speed of switch-on and switch-off: the gas may preferably be supplied continuously and pumped off for external cooling. The high voltage electrode 16 faces grounded mesh electrode 17 covering supported 31 thin Ti window 30 (Fig. 7, not shown) dividing the gas chamber 13 from vacuum chamber 26 in which window 30 functions as grounded anode facing cold cathode 27. Pulsing cathode 27 negatively via a Marx circuit (Fig. 1, not shown) injects electrons through window 30, ionizing the gas and allowing current, e.g. 20 kA, to flow within 200 ns. (Figs. 3, 4, 5, not shown). Switch-off may be by suppressing the electron beam by shorting its supply via a gas tube. The supply may be continuous rather than via Marx capacitors, with a conventional slow switch to shunt electrodes 16, 17. To protect window 30 at switch-off when it acts as a cathode on the gas chamber, insulated guard grid 64 may be grounded via gas tube 68, triggered by the same circuit which triggers the supply-shorting gas tube. When switching A.C. a similar guard grid may be fitted to electrode 16.
Patent GB-758949-A (GB)
Title: Improvements in or relating to relay selectors and cross-bar switches
IPC: H01H67/26
Filed: 1954-02-01
Abstract: 758,949. Automatic exchange switches. TELEFONAKTIEBOLAGET L. M. ERICSSON. Feb. 1, 1954 [March 4, 1953], No. 2992/54. Class 40 (4). In a cross-bar switch or a relay selector the conductors of the bore-wire multiple are located in grooves in one face of a block of insulating material and the contact springs pass from the opposite face through holes in the block, which holes are crossed by the grooves. As shown, in the selecting bar unit of Fig. 2 the contact springs 18, having cylindrical silver contacts 18a, pass through holes in the block 2, which block 2 has longitudinal grooves in which the bore-wire multiple conductors 2a (Fig. 5) are located. These grooves cross the holes 2b. To operate the cross-bar switch the selecting magnet 17b, corresponding to the spring set shown in Fig. 2, is operated, whereupon the selecting bar 14 moves downwards, thus rotating the indicating means 15 in a counter-clockwise direction so that the lug 15a contacts the operating bar 6. Operation of the operating magnet then rotates the operating bar clockwise, so lifting the indicating device 15, which in turn lifts the lifting bar 16. The springs 18 are thus raised so that the contacts 18a engage the conductors 2a. Release of the selecting magnet restores the selecting bar which can then be reoperated without moving the operated indicating device. Release of the operating bar restores the lifting bar and the contact springs to normal. The bend in each of the conductors 2a at each hole which it crosses is formed after the conductors have been laid in the grooves and serves to provide two points of contact with each spring contact 18a instead of the usual one. A multiple relay (Figs. 6, 7, not shown), is also described in which the holes are vertical slots crossed by the conductors, each slot serving for the passage of all the springs of a spring set.
Patent GB-1088082-A (GB)
Title: A hydraulic feed for controlling linear intermittent motions, particularly in machine tools
IPC: F01L25/06
Filed: 1965-01-22
Abstract: 1,088,082. Reciprocating machine tool tables. HYDREL A.G. Jan. 22, 1965 [Jan. 22, 1964], No. 3014/65. Heading B3L. An hydraulic drive for reciprocating a table in a machine tool &c. comprises an hydraulic piston-cylinder-motor whose piston K is provided with two piston-rods extending in opposite directions through the ends of the cylinder, a variable delivery reversible pump P delivering working fluid under pressure alternately to the alternately operative working surfaces of the piston by way of an hydraulic reversing device U which is fed by a servopump ZP, there being provided a time mechanism, the time constant of which is adjustable in inverse ratio to the volumetric output of the delivery pump, the time mechanism comprising a timing member ZR 1  adapted to open a valve SV 1  in a feed line between the servopump ZP and the reversing device U, under the control of means Z, R, operable by the hydraulic motor piston or by parts connected therewith to provide a control speed proportional to the speed of the piston. The piston U controls the pump P through a link St and its stroke is determined by cams E 1 , E 2 , set by hand wheels H 1 , (H 2 ). Fluid for operating the piston U is supplied at a constant pressure by a pump ZP driven by the same motor which drives the pump P. When a dog N 1  or N 2  travelling with the piston K trips a rod AF 1  or AF 2 , one of the time delay valves AK 1 , AK 2  is operated to cause fluid from a gear pump HP to move one of two spring-pressed valves SV 1 , SV 2 , to direct fluid from the servo pump ZP to the piston U. The length of stroke of the time-delay valves SV, and thence the duration of the time delay, is determined by cams E 3 , E 4  adjusted simultaneously with the cams E 1 , E 2 . The delivery of the pump HP is rendered proportional to the speed of the piston K by driving it by a rack Z and a pinion R. The gear pump HP may be replaced by a positive displacement pump. In modifications, the trip dogs either operate mechanical devices to move the control valves or move pistons within cylinders.
Patent GB-1162334-A (GB)
Title: Production of Organic Sulphides
IPC: C07C319/24
Filed: 1968-01-19
Abstract: 1,162,334. Tertiary hydrocarbyl trisulphides. MONSANTO CO. 19 Jan., 1968 [20 Jan., 1967], No. 3018/68. Heading C2C. [Also in Division C5] Hydrocarbyl trisulphides having the formula wherein each of R 1  to R 6  is a hydrocarbyl or substituted hydrocarbyl radical, are prepared by reaction in the presence of a basic catalyst, a mercaptan having the formula with sulphur, or with one or more polysulphides having the formula wherein Y is an integer greater than 3, using more than one gram mole of mercaptan per gram atom of sulphur or per (Y - 3) gram moles of polysulphide, or when a mixture of polysulphides is used, more than one gram mole of mercaptan per (x - 3) gram moles of the mixture, where x is the average number of S atoms per molecule. Alternatively tert. alkyl trisulphide polymers may be prepared by the process by using as the mercaptan a poly (tert. alkyl) polythiol. The basic catalyst is preferably an amine.
Patent GB-917991-A (GB)
Title: Improvements in and relating to an oleo-pneumatic carrier and damping device for a vehicle suspension system
IPC: F16F9/08
Filed: 1961-01-26
Abstract: 917,991. Hydropneumatic suspension units; adjusting vehicles height. SOC. D'ETUDES ET D'APPLTCATIONS INDUSTRIELLES, COMMERCIALES ET IMMOBILIERS INTER-TECHNIQUE. Jan. 26, 1961 [Feb. 2, 1960], No. 3048/61. Classes 108(2) and 108(3). An oleo-pneumatic vehicle spring damper device of the piston and cylinder type wherein the cylinder 1 has oil inlet and outlet ports 38, 30 connected, respectively, to a pump and an oil tank and in which outlet port 30 co-operates with the piston 3 to maintain the vehicle height constant is characterised in that the piston comprises a constant section plunger sliding in the cylinder and a seal 16 is carried in the end of the cylinder, a discharge duct 36 leading from behind the seal to the outlet port 30. Spring- ing is provided by compressed air above a diaphragm 45 in spherical chamber 40 and damping by spring-loaded valves 48, 49 which close bores 46, 47 in valve plate 28. In operation. the pump pumps oil from the tank through a non-return valve and inlet port 38 into annular chamber 29 whence the oil passes through the serrations on the outer edge of valve plate 28 and the bores 46 into the cylinder above the piston. in the equilibrium position of the device (Fig. 2) oil leaves the cylinder through an annular gap between the top of the piston 3 and annular depression 35 in the cylinder wall, through bore 34, orifice 32 in diaphragm plate 33 and outlet 30 and returns to the oil tank. The orifice restricts the oil flow and hence the required pump capacity. When the vehicle height is reduced the annular gap between piston and depression is closed and the oil entering the inlet port raises the vehicle to the equilibrium position when the ieight is increased the excess oil escapes through bore 34 and restores the vehicle to the equilibrium position. Oil leakage between the piston and cylinder enters the chamber behind seal 16 and returns to the oil tank through duct 36, port 36a and outlet 30. A rubber O-ring 24 or lipped seal is provided in the cylinder just above the normal upper limit of the piston travel and forms a seal with the piston when the vehicle is stationary to limit the drop in vehicle height. The chamfer on the top edge of the piston prevents damage to the seal during abnormally high piston movements.
Patent GB-331482-A (GB)
Title: Improvements in or relating to the preparation of diolefines directly from alcohols
IPC: C07C1/20
Filed: 1929-01-30
Abstract: 331,482. Lebedev, S. V. Jan. 30, 1929. Diolefines and their bromine derivatives. Diolefines are obtained by heating alcohols, having a lower number of carbon atoms than the diolefine required, in the presence of a dehydrating catalyst and a dehydrogenating catalyst. Methyl, ethyl and propyl alcohols may be treated. The reaction is preferably carried out under reduced pressure, and the products cooled rapidly. In an example ethyl alcohol (95 per cent) is led through a quartz tube containing aluminium and zinc oxides at 400‹ C. and a quarter atmospheric pressure. The reaction products are passed through a condenser at 0‹ C. and thence into bromine. The bromides are then fractionally distilled, and the residual tetrabromide is converted into butadiene in a known manner, e.g. by reduction with zinc in alcoholic solution. Specification 17235/12 is referred to.
Patent GB-1387142-A (GB)
Title: Fast motor boats
IPC: B63H5/16
Filed: 1972-01-24
Abstract: 1387142 Propelling boats R LEVI 19 Jan 1973 [24 Jan 1972] 3177/72 Heading B7V A fast motor boat has a propeller shaft which extends through a hull step and which mounts a propeller at a distance aft of the transom or step equal to between 7 and 30% of the overall length of the hull. The shaft extends directly aft of the driving engine or its gearbox so that the direction reversal of a V-drive is avoided. The propeller is located to operate in a semisubmerged condition. The arrangement increases longitudinal stability and reduces appendage drag. If two shafts and propellers are provided, lateral stability is improved since, above a low degree of heeling, one propeller is brought clear of the water to allow the other to apply an unrestricted righting moment. Where a number of shafts and engines are used, the engines may be staggered along the boat and the shafts may converge towards their rear ends. The rear ends of the shafts may be supported by structures which extend from the rear of the hull and which may carry an exhaust emission cover, anti-spray fins, and rudders.
Patent GB-270382-A (GB)
Title: Improvements in gliders for curtain rails
IPC: A47H15/04
Filed: 1926-02-04
Abstract: 270,382. French, G. F., French, R., and Pinch, W. H. Feb. 4, 1926. Curtains, suspending.-A curtain runner for I &c. rails consists of a sheet metal U-shaped glider a with downturned ends a<1> engaging the rail, provided with a swing. ing loop c carrying a ring &c. d to which the curtain is attached. The loop c is attached to the glider a at points above the level of the rail. The ring d is preferably 8-shaped with two upper eyes, which may be spaced apart to receive a receiving cord, engaging the loop c. The ends a<1> may be bent L- shaped and the wearing parts may be faced with anti-friction material. The members a may be made of fibre, vulcanite, hard leather &c. to reduce friction and noise.