baber/WOPTO huggingface dataset:
Patent GB-116909-A (GB)
Title: Improvements in and relating to Machines for Forming the Ends of Punches for Cartridge Cases and the like.
Inventor: RINTOUL HARRY ERNEST
IPC: B24B3/36
Filed: 1917-05-01
Abstract: 116,909. Rintoul, H. E. May 1, 1917. Disk apparatus.-In apparatus for grinding and rounding-off the ends of punches used in the manufacture of cartridge cases &c., the punch 64 is mounted in a chuck provided with a driving- pulley 56 and carried in bearings 53. 54 on a compressed slide providing adjustment in the direction of the axis of the chuck and at right-angles thereto. The lower slide is fitted on a table 42 mounted to swing over the surface of a slide 29 about the axis of a pin 30 supported on the slide. The slide 29 is movable along guide-rods 27, 28 carried by flanges 25, 26 on a lower slide 12 that is movable in the bed 10 by means of a hand-lever 17, spindle 14, pinion, and rack. The pin 30 of the slide 29 carries a pinion 31, which gears with a rack 37 on the guide-rod 28 and with a rack 76 slidable on the rod 32 against the action of a spring 34. When, with the parts in the position shown in Fig. 2, the punch has been inserted in the chuck, the slide 29 is moved to the left by means of the lever 35; this movement, in consequence of the engagement of the pinion with the fixed rack 37, causes the pinion and the table 42 to swing through a right-angle. The slide 12 is then advanced by means of the lever 17 to bring the end of the punch up against the periphery of the grinding-wheel 65, whereby its end is ground; the lever 35 is then moved to the right, causing the punch to move laterally across the face of the grinding-wheel, at the same time rounding off its edge by the swinging movement of the table about the axis of the pin 30; the return movement is provided by the action of the spring 34 upon the slidable rack 76. For the purpose of trueing the surface of the grinding-wheel, the guide-rod 28 is arranged to be turned on its axis to throw the rack clear of the pinion; the operation of the lever 35 thus serves to move the apparatus to and fro parallel to the axis of the grinding-wheel, which is dressed by a tool inserted in the chuck. The chuck is provided with a work-bearing back centre 60 carried on a guide-rod 77 pressed up by a spring 61 and drawn back by a handle 80. Springs 20 are provided to draw the slide 12 away from the grinding-wheel.
Patent GB-700701-A (GB)
Title: Metallized dyes for cotton
IPC: C09B35/20
Filed: 1951-03-14
Abstract: The invention comprises the complex copper derivative of the disazo dyestuff which is obtained by coupling tetrazotized dianisidine with 1 mol of 2-naphthol-3 : 6-disulphonic acid and 1 mol of 1 - (m-sulphophenyl) - 3 - methyl - 5 - pyrazolone and coppering the product under demethylating conditions.  The two couplings may take place in either order.  In an example, dianisidine is dissolved in hydrochloric acid containing sodium di-n-butylnaphthalene sulphonate and tetrazotized as usual; the naphthol coupler is then added, followed by the pyrazolone and the disazo dyestuff isolated. Coppering is effected with ammoniacal copper sulphate.  An example is given of the dyeing of cotton reddish-blue with the product. Specification 635,621 is referred to.
Patent GB-459623-A (GB)
Title: Improvements in and relating to liquid-screening apparatus
IPC: E02B5/08
Filed: 1936-02-29
Abstract: 459,623. Filters. PEEBLES, J., Waterworks Cottage, Dalrymple, and GLENFIELD & KENNEDY, Ltd., Kilmarnock, both in Ayrshire, Feb. 29, 1936, No. 6163. [Class 46] A rotary drum filter is provided with an end wall 2 of truncated conical shape which projects into the interior of the drum to prevent solid material from banking up against the end wall. The latter is made of plates which are attached to spokes 7 radiating from a hub 5 secured to the shaft 3. A second hub 4 carries straight spokes 6. The screen 1 is provided with plates 8 which collect and carry up the solids within the screen for deposition into a hopper connected to an outlet.
Patent GB-312595-A (GB)
Title: Improvements in or in connection with pneumatically operated percussive tools
IPC: B25D9/08
Filed: 1928-02-28
Abstract: 312,595. Curti, E. Feb. 28, 1928. Percussive tools.-The striker 10 is actuated by compressed air supplied from a compressor A in uni-directional impulses under the control of a rotary reciprocating valve 5 which reciprocates in phase with the compressor piston 1, aided by a spring 6, and is caused to rotate by a screw thread 20 on the spindle 17 of a ratchet wheel 18. The valve 5 is hollow and divided by a partition 11. In its left-hand position air is admitted above the striker 10 through one of the ports 7 and in its right-hand position air is admitted below the striker through a port 13, whilst the space above the striker is opened to exhaust ports 16 by way of ports 12, 15. Relief ports 21 for excess air are provided, as well as a vent in the air pipe C if desired. In a modified device (not shown) the upstroke of the striker is .effected by a spring, and the valve 5 is replaced by a slide valve.
Patent GB-456403-A (GB)
Title: Method and devices for bending pipes
IPC: B21D9/07
Filed: 1936-03-02
Abstract: 456,403. Angular bending. CLEVER, O., 59, Buscheystrasse, Hagen, Westphalia, Germany. March 2, 1936, No. 6273. Convention date, May 2, 1935. [Class 83 (iv)] In bending a tube c by a pivoted former a, to which the tube is clamped by a member e, the tube is compressed on the outside of the bend to neutralize the tension. The end of the tube may be cut obliquely and end pressure applied to the tube by a recess l on a carrier f, which may be split and moved axially by screws. If the end of the tube is cut at right angles to the axis, the recess is oblique. Mandrels.-A mandrel h with a thickened curved end is located within the carrier f.
Patent GB-212921-A (GB)
Title: Improvements in devices for use in the production of kinematographic combination pictures
IPC: G03B15/08
Filed: 1924-03-11
Abstract: 212,921. Lehmann, E. March 12, 1923, [Convention date]. Composite photo. graphs.-To facilitate the production of composite and trick photographs in which it is necessary to expose the film several times, a plate having division lines on its surface is inserted during adjustment in the focusing screen or is permanently situated behind it, and moved forward on guides. The lines are in the form of a rectangular net work. Alternatively an adjustable microscope a may be used fltaed with a micrometer screen, and arranged to view the focusing screen directly or through reflecting prisms p as shown.
Patent GB-1335813-A (GB)
Title: Transistor and method of manufacturing the same
IPC: H01L27/088
Filed: 1973-10-14
Abstract: 1335813 Semi-conductor devices KOGYO GIJUTSUIN 14 Oct 1970 [14 Oct 1969] 6335/73 Divided out of 1327241 Heading H1K In a method of making an IGFET or a lateral transistor, the IGFET having a "base" region of opposite conductivity type, within part of which the channel is induced, separating the source and drain regions, the base region and a heavily doped part of the drain or collector region are produced by introduction of impurities into spaced areas defined by apertures in a single mask. As shown, a semi-conductor substrate 100 which is to form the lightly doped part of the drain collector region is covered with a layer 200 of SiO 2  in which are opened all the diffusion windows 201, 202 required. A layer (300) of Si 3 N 4  is applied and selectively removed to expose the base-source/emitter diffusion window 202, only approximate alignment being required. Impurities are then diffused in to form the base region 2, the remainder of the Si 3 N 4  layer (300) is removed and opposite conductivity type impurities are diffused-in to form the source/ emitter region 3 within the base region 2 and the highly doped part 1 of the drain/collector region. Instead of using a different material for the second masking layer a thin layer of the same material as the first layer may be used, selective removal being achieved by using etching times insufficient for the complete removal of any part of the first layer. The base region may be produced by ion implantation using Al as the second masking layer and the source/emitter and drain/collector regions may be produced by ion implantation or diffusion.
Patent GB-590423-A (GB)
Title: An improved portable scaffolding unit
IPC: E04G1/20
Filed: 1945-03-14
Abstract: 590,423. Scaffolding. AVELING-BARFORD, Ltd., and PENN, O. S. March 14, 1945, No. 6345. [Class 20 (ii)] A portable scaffolding unit consists of a mast formed of four tubular uprights a connected by crosspieces, and two platforms b, c which can slide on the mast and are connected to it by cable and pulley gear d. The upper platform b is in two halves, one on each side of the mast, whilst the lower platform c extends completely across the front of the mast. The two platforms are rigidly connected together, the bottom one c being hinged at c', as shown in the side view Fig. 2, so that it can be folded against the mast for transport purposes. Arms f pivoted to the top of the mast can be used to connect several masts together. The invention can be used in conjunction with the elevator described in Speciflcation 590,424, [Group XXX]
Patent GB-692452-A (GB)
Title: Plasticisers, catalysts and stabilisers for aminoplastic resins and their industrialapplications
Inventor: DURR ANDRE
IPC: C08K5/103
Filed: 1951-03-16
Abstract: Amino resins, i.e. condensation products of formaldehyde with urea, thiourea, dicyandiamide and its derivatives or melamine and its derivatives, are plasticized by the addition of a hexamethylene tetramine salt of the general formula RO-CH2-Q-CH2-A-B where R is an alkyl, aryl, aralkyl or cycloalkyl group, -CH2-Q-CH2- represents the residue of a polyhydric alcohol, A is the radical of a dibasic or polybasic inorganic or organic acid and B represents hexamethylene tetramine neutralizing the unesterified acid groups of A (see Group IV (b)).  In the general formula R may suitably be a butyl, propyl, amyl, benzyl, phenyl or cresyl radical; Q may be the residue of glycerol, pentaerythritol, sorbitol, trimethylol propane or hexanetriol and the polybasic acid may be for example be sulphuric, phosphoric, oxalic, phthalic, maleic, succinic or tartaric acid.  The plasticizer is suitably added to the resin-forming ingredients of, for example, a urea-formaldehyde resin prior to hardening the resin. The compounds act as combined plasticizers, stabilizers and catalysts in cast resins, moulding powders, adhesives and lacquers.  In examples catalysts of the above general formula are incorporated into (8) a urea-formaldehyde glue, and (9) a urea-formaldehyde moulding powder.ALSO:The invention comprises hexamethylene tetramine salts of the general formula RO.CH2-Q-CH2-A-B where R is an alkyl, aryl, aralkyl or cycloalkyl group, -CH2-Q-CH2- represents the residue of a polyhydric alcohol, A represents the radical of a dibasic or polybasic inorganic or organic acid and B represents hexamethylene tetramine neutralizing the unesterified acid groups of A, and the preparation thereof by esterifying a monoether of a polyhydric alcohol with a dibasic or polybasic acid and neutralizing the unesterified groups of the acid with hexamethylene tetramine. Suitably the polyhydric alcohol may be glycerol pentaerythritol, sorbitol, trimethylol propane or hexane triol, the etherifying group R may be derived from butyl, propyl, amyl or benzyl alcohol or from a phenol such as o-, m- or p-cresol or phenol itself and the polybasic acid may be a mineral acid such as a sulphuric, boric or phosphoric acid or an organic acid such as oxalic, phthalic, maleic, succinic or tartaric acid.  The compounds are used as additives to urea-formaldehyde and other amino synthetic resins.  In examples, there are prepared the hexamethylene tetramine salts of (1) the sulphuric acid mono-ester of glycerol o-cresyl mono-ether; (2) the sulphuric acid mono-ester of glycerol monobenzyl ether; (4) the oxalic acid mono-ester of hexanetriol phenyl mono-ether; (5) the phosphoric acid mono-ester of glycerol mono-o-cresyl ether; (6) the phthalic acid mono-ester of glycerol m- and p-cresyl-monoether and (7) the oxalic acid mono-ester of glycerol monophenyl ether.
Patent GB-1139286-A (GB)
Title: Exposure control apparatus
Inventor: METZGER LENARD M
IPC: G03B7/085
Filed: 1967-02-09
Abstract: 1,139,286. Photo-electric diaphragm control. EASTMAN KODAK CO. Feb. 9, 1967 [July 28, 1966; Feb.14, 1966], No. 6353/67. Heading G2A. [Also in Division G1] In an exposure control apparatus of the type having an exposure aperture regulator controlled by a photo-electric device, the device controls the energy content of one polarity of a source of current pulses energizing an electro-mechanical transducer to determine the mean regulator position and to provide vibration thereabout. Light incident upon a lens L, Fig. 1, passes through a pair of apertures in a plate A to fall respectively on a photo-sensitive material F and a photo-resistor R4. The latter is connected to shunt a resistor R2 in a multivibrator energizing the coils N1, N2, of a motor controlling the aperture plate A through a linkage B and the plate is driven to a point whereat the amount of light falling on the photoresistor equalizes the pulse currents through the two coils. A number of permanent magnet and electromagnet motor arrangements with coils N1, N2, mounted alternatively on the stator or rotor are described with reference to Figs. 2-4 (not shown). Further arrangements described include a transistor amplifier between the multi-vibrator and coil N1, and single and double stage transistor amplifier between the multi-vibrator and both the coils, and in still further arrangements the direction of current flow through a motor comprising a single coil element is reversed by four switching transistors or by a Schmitt trigger. The circuit may include filters to suppress noise and may be built as an integrated component. Application of the invention to a television camera is also mentioned.
Patent GB-415785-A (GB)
Title: Electrical conductors
IPC: H01B1/08
Filed: 1933-03-03
Abstract: A material for electric conductors is obtained by separating from a titaniferous ironsand occurring in New Zealand and elsewhere, a portion containing from 25-70 per cent of iron oxides and 10-15 per cent of titanium dioxide; the separation may be effected by magnetic separators.  The material may be enclosed in an insulating sheath or fused and moulded or drawn into wire.
Patent GB-1494705-A (GB)
Title: Vehicle engine cooling system
IPC: G05D23/185
Filed: 1975-02-08
Abstract: 1494705 Fluid-pressure servomotor systems PLESSEY CO Ltd 30 Jan 1976 [18 Feb 1975]  6738/75 Heading G3P A valve device in a vehicle engine cooling system comprises an orifice 6 whose flow area is controlled by a closure member 8 in dependence on the expansion and contraction of a sensor 4 responsive to the temperature of a fluid external to the valve device, an orifice 16 which is opened or closed by a sensor 18 responsive to fluidpressure in the valve device, and a spool valve 24 which is in a first position, in which fluid in the cooling system does not pass through the valve device, when the orifices 6, 16 are closed, and is in a second position, in which fluid from the system does flow through the device, when one or both of the orifices 6, 16 is open. The temperature sensor 4 is a wax element carrying a tapered spigot 8 which is urged to return on contraction of the wax element by a spring 14. The device is described for controlling the flow of fluid from a pump (passage 34) to a hydraulically-driven engine cooling fan (passage 62). When the engine temperature is above a given value and the pressure in the valve device is normal both orifices 6, 16 are closed and spool 24 is biased by spring 46 to shut off fluid gallery 30. Should the engine temperature fall, or the pressure in the device exceed a safe value, the appropriate one of the orifices 6 or 16 will be opened, the pressure above web 26 will fall and the spool 24 will be moved to allow fluid from the pump to pass via ports 28, the gallery 30 and either passages 68, 72, 66 or passage 74 to tank.
Patent GB-1074295-A (GB)
Title: Improvements in and relating to transmission circuit arrangements for inverting the polarity of a signal
IPC: H04N5/46
Filed: 1965-02-17
Abstract: 1,074,295. Phase - reversible amplifiers. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. Feb. 17, 1965 [Feb. 19, 1964 (2)], No. 6858/65. Heading H3T. A transistor amplifier may be converted into a non-inverting unity gain stage by biasing the collector-base junction so that it acts as a shortcircuit. As applied to the post-detector stage of a dual-standard T.V. receiver (Fig. 2), the transistor 22 acts as a normal amplifier on one standard with switch 20 open, and as a non- inverting stage with switch 20 closed when the vision signal is of opposite polarity. The resistors 34 and 35 can be chosen so that the amplification is unity for both polarities. The collector-base junction also functions as a limiter for suppressing interference since, when forward biased, it will not pass negative signals large enough to overcome the bias. The preceding stage 21 acts as an emitter-follower for the video signals and a tuned commonemitter stage for the sound-carrier which is taken off at 24. Sound-rejection in the video channel is assisted by the rejector circuit 25. The switch 20 may apply a negative bias to the base instead of a positive bias to the collector. One or both transistors may be NPN. The arrangement is also applicable to logic circuits, computers and control systems.
Patent GB-627891-A (GB)
Title: Improvements in or relating to expanding linkwork and bracelets chains and the like comprised thereof
IPC: A44C5/06
Filed: 1947-03-12
Abstract: 627,891. - Bracelets. HELLINGS, E., and WINCHESTER, R. W. March 12, 1947, No. 6923. [Class 43] [Also in Group XXIV] An expanding bracelet comprises pairs of similar links 1, having integral tabs or lugs 2 for securing or anchoring restoring springs 7, the links being pivoted together by eyelets 6, 9. A helical spring 7 within each eyelet 6 has arms 8a, 8b, engaging bent over tabs 2. Each end of the linkage is terminated at a yoke 10 provided with two lugs 11 having slots in which the securing eyelets 9 can slide. A dished cover 12 is secured to each link as by tabs 13, and a similar cover is provided for the lugs 11.
Patent GB-720808-A (GB)
Title: Improvements in wide-angle objectives
IPC: G02B13/04
Filed: 1953-03-13
Abstract: 720,808. Optical objectives. ANGENIEUX, P. March 13, 1953 [May 29, 1952], No.6963/53. Class 97 (1). A wide-angle objective in .which the back focal length is between 115 and 160 per cent of the focal length F of the objective consists of a negative part spaced in front of a positive part at a distance greater than ¢F and smaller than 12F and having a focal length f numerically smaller than 4F and greater than F, the negative part consisting of a simple convergent lens of focal length less than 10f but greater than f, and a simple divergent meniscus, convex towards the front, and of focal length between 90 per cent f and 45 per cent f, while the positive part consists, in order from the front, of a simple convergent lens, a simple convergent meniscus convex towards the front, a simple biconcave lens or a simple convergent lens. The front surface of the negative part may have a radius of curvature between f and 10f. Numerical data are given for one example of the objective shown. Specification 673,358 is referred to.
Patent GB-1384742-A (GB)
Title: Electrostatic powder coating apparatus
IPC: B05B5/03
Filed: 1972-02-15
Abstract: 1384742 Electrostatic powder spraying GRACO Inc 15 Feb 1972 [16 Feb 1971] 6988/72 Heading B2F The specification describes a spray gun which is also described in Specification 1384741 but the claims are directed to different aspects of electrostatic powder coating apparatus.
Patent GB-1254167-A (GB)
Title: Device for precipitating solid and/or liquid particles suspended in gas
Inventor: KOKA VOLODIMIR PETROVICH
IPC: B01D46/24
Filed: 1969-02-10
Abstract: 1,254,167. Apparatus for removing suspended particles from a gas. INSTITUT PROBLEM MATERIALOVEDENIA. 10 Feb., 1969, No: 7032/69. Heading B1R. Apparatus for removing particles suspended on a gas comprises an outer conduit 1 with a jacket through which a cooling medium is passed and an inner tubular member with walls permeable to a vapour passed through the tubular member via pipes 5 and 6; the particle laden gas to be treated being passed through the space between conduit 1 and tubular member 2 and vapour permeating through the wall of member 2 enters the gas and is condensed by the cooled inner surface of the conduit 1 whereby particles in the gas are precipitated. Gas passing through the space between the conduit 1 and the member 2 may be given a rotational movement by vanes 3. A plurality of permeable tubes may be arranged in a single conduit and the tubes may taper in the direction of flow of the gas. Instead of a vapour being supplied to the tubular member a vaporisable liquid may be introduced thereinto, the outer surface of the member being provided with means to' vaporise the liquid.
Patent GB-663526-A (GB)
Title: Improvements relating to liquid operated servo mechanisms
Inventor: IFIELD RICHARD JOSEPH
IPC: F15B11/10
Filed: 1948-03-08
Abstract: 663,526. Fluid-pressure servomotor control systems. LUCAS, Ltd., J. April 6, 1949 [March 8, 1948], No. 7070/48. Class 135. A fluid pressure servomotor system comprises a piston 16 movable in a cylinder a under liquid pressure under the control of a valve d operated by an actuating member such as the diaphragm e, itself controlled by a number of normally-open control valves o, p, q arranged in series. The valves o, p, q are responsive to different controlling factors such as the speed of a pump, the rate of fluid delivery, temperature, blower delivery pressure or atmospheric pressure. Thus the valve o is actuated by a solenoid 7 controlled by a thermally or manually operated switch (not shown). The valve p is actuated by a capsule g responsive to blower or other pressure, and the valve q is actuated by a spring-loaded diaphragm 11 exposed through a port 13 to the discharge pressure of a pump and responsive therefore to the speed of the pump. The valves o, p, q are opened by springs 2, 3, 4 and have restricted by-passes x, y, z which may be separate channels as shown or may be provided in either of the valve closure surfaces. The final valve q has an exhaust outlet n. The diaphragm e is loaded by a spring f in a chamber g having a connection 20 to atmospheric or other pressure. The chamber below the diaphragm is supplied through a restriction h from the same source 22 as supplies the servocylinder a through a further restriction 19. A spring 17 maintains the piston 16 in its upper position until an outlet b is opened by the valve d. The piston 16 may control the output of a swashplate pump supplying liquid fuel to a furnace or the combustion chamber of an engine. Alternatively it may control a throttle valve. Fig. 2 shows a modification in which the by-pass passages x, y, z are dispensed with, since the valve d has a direct outlet n<SP>1</SP> to exhaust. In this case the control pressure acts in a chamber g above the valve and passes through the valves o, p, q to exhaust in the reverse order. In another modification, the valve d is formed as a piston and has a direct passage to exhaust. The valve d in this case controls two servopistons simultaneously. In a still further modification, the valve d is of spool form and controls the inlet and exhaust of pressure liquid to and from both ends of the servocylinder.