baber/WOPTO huggingface dataset:
Patent GB-334682-A (GB)
Title: Improvements in or relating to apparatus for compressing carbonic acid snow
IPC: C01B32/55
Filed: 1929-08-07
Abstract: 334,682. Maschinenfabrik Esslingen, and Stoffels, J. Aug. 7, 1929. Solidifying.-Carbon dioxide snow is formed by expansion of the liquid in cylinders 2 and is transferred to a movable container 8 which is subsequently moved under an hydraulic press 6; after the compression, the container is moved away and tilted so that its contents may be easily emptied. In filling, the container is brought on the supporting frame 7 to the cylinder to be discharged and is connected to the rod of a hydraulic cylinder which rod is also connected to the bottom closing lid of the cylinder, the container being thus pushed under the cylinder as the lid is removed ; on the return of stroke, the lid is replaced and the container removed and afterwards disconnected from the piston rod.
Patent GB-670079-A (GB)
Title: Improvements in and relating to the production of emissive coating materials for oxide cathodes and of cathodes provided with such coatings
IPC: H01J9/04
Filed: 1948-09-15
Abstract: In the production of emissive coatings for oxide cathodes of electron tubes in which calcium, barium or strontium carbonates, or mixtures or mixed crystals thereof, are precipitated from an aqueous solution of an alkaline earth metal compound, and a suspension is formed in an organic liquid from which the carbonate(s) can be applied to the cathode core, e.g. by spraying, dipping or, preferably, cataphoresis, substantially all the carbonate grains are constantly protected against contamination by a liquid which protects their surfaces from impurities, particularly in the air, up to the moment of application to the core.  The carbonates may be precipitated as fine crystals, i.e. with no dimension greater than 5m  by addition of sodium or potassium carbonate solution containing the corresponding hydroxide to alkaline earth nitrate solutions, preferably at 70-90 DEG C. or more, the precipitate is washed, whilst not allowing it to dry, and transferred to a preferably water-miscible organic liquid, e.g. methyl or ethyl alcohol.  This is partially removed under reduced pressure, whilst keeping the carbonate moist, and the operation repeated.  Cataphoresis may be effected from a suspension in the above alcohols, or the carbonates may be transferred to isobutyl or other alcohol, acetone or other ketones, &c.  In another procedure, the carbonates are precipitated with a longitudinal dimension of, say, 8-45m , using ammonium carbonate, water is eliminated with the aid of methyl alcohol, and the precipitate transferred to isobutyl alcohol.  The size of the grains is then reduced by the action of high frequency mechanical vibration, e.g. supersonic waves generated by a piezo-electric quartz crystal, or in a mill in which grinding is effected by the impact of a high velocity jet of suspension against a piled-up accumulation of suspended matter.
Patent GB-718576-A (GB)
Title: Improvements in or relating to casting installation for stereotype plates
IPC: B41D3/00
Filed: 1952-09-26
Abstract: 718,576. Stereotype casting. MASCHINENFABRIK AUGSBURG-NURNBERG AKT.- GES. Sept. 26, 1952 [Sept. 26, 1951], No. 24228/52. Class 100 (2). A plug cock for the control of the metal discharge from the melting kettle on stereotype casting installations is characterized in that the plug 9 is supported in the bore 12 for the plug at both sides 13, 14 of the discharge opening 11 by relatively short lengths of the axial dimensions of the plug body so that the ported part of the body occupies a predominantly large axial dimension of the plug body and that coaxial pin-like connecting extensions 15, 16 of the plug project without contact into the bore. The end of the pin 16 is provided with a polygonal surface 17 and carries a ring 18 which bears against a strap 19 secured to the pouring mouth 8. The ring 18 and plug 9 are secured by locking- nuts 20, 21. The pin 15 is also formed with a polygonal surface on which is fitted a sleeve 22, having apertures 23 for reducing heat dissipation. The other end of the sleeve 22 is mounted on the side wall 1 of the frame and has secured to it a spanner head 25 connected with an operating lever 24 by which the plug cock is rotated.
Patent GB-818931-A (GB)
Title: Improvements in or relating to processes for the forming of an electrode on a semi-conductor
IPC: H01L21/24
Filed: 1956-08-07
Abstract: 818,931. Semi-conductor devices. SIEMENS-SCHUCKERTWERKE A.G. Aug. 7, 1956 [Aug. 5, 1955], No. 24231/56. Class 37. An alloy junction electrode on a semi-conductor body is produced by placing a mass of impurity material of desired electrode shape on the semi-conductor and covering the marginal zone(s) of this mass with an auxiliary body of higher melting point material which adheres to the impurity material when this is molten, so that the latter maintains the desired shape during the alloying process. Figs. 1 and 2 show a germanium or silicon body 1 bearing a circular disc 2 of impurity material such as indium, the marginal zone of which is covered by an annular body 3 of material such as molybdenum, tantalum, tungsten or iron. Alternatively the electrode may be rectangular or elliptical, or be in the shape of an annulus, the inner and outer marginal zones each being covered by an annular auxiliary body, with, for example, further auxiliary bridge pieces linking the inner and outer annuli. An intermediate coating of gold, tin, and tin-indium alloy may be provided between the electrode and high melting point body to assist adhesion. The body may be affixed to the electrode material prior to the alloy heating step, or may be shaped to interlock with the electrode material on assembly. The semi-conductor material may alternatively consist of a binary A III , Bv compound. The process may be used to provide a rectifier or a transistor.
Patent GB-1069039-A (GB)
Title: Purification of aluminium sulphate
IPC: C22B21/00
Filed: 1965-06-08
Abstract: Aqueous aluminium sulphate containing as impurities iron, chromium and at least one of titanium and zirconium is purified, in a similar manner as is described in the parent Specification, by (1) adding chlorine to convert Fe2+ and Cr3+ in the aqueous aluminium sulphate to Fe3+ and Cr6+ respectively, (2) adding a water insoluble amine anion exchanger to the oxidized product to remove the impurities, (3) separating and recovering the aqueous aluminium sulphate, (4) reactivating the amine anion exchanger by contacting it with aqueous sulphuric acid (\sF 6% conc.), (5) then treating it to reduce the sulphate content to 25% or less based on the amine anion exchanger (6) recycling the treated anion exchanger to step (2). The chlorine added is equivalent to the Fe2+ and Cr3+.  The amine anion exchanger used in step (2) which generally has a molecular weight of 200 to 600 may be lauryl trialkylamine and is dissolved in a petroleum distillate or organic solvent.  The conc. of exchanger is 3 to 15%. In step (2) aqueous/organic volume ratio is 1 : 1.5 to 1 : 2.5.  In step (4) the aqueous H2SO4/organic volume ratio is 1 : 6 to 1 : 12. The reactivated amine from step (4) may be treated with a 10-20% solution of sodium carbonate to remove chloride conc.  Step (5) may be carried out by washing with water.  The H2SO4 used in step (4) may contain ferrous sulphate.  Step (1) is carried out at 45-60 DEG  C. or at 150-177 DEG  C. under superatmospheric pressure.
Patent GB-317056-A (GB)
IPC: G01R31/01
Filed: 1929-08-08
Abstract: 317,056. Elektrizitõts - Akt. - Ges. Hydrawerk. Aug. 9, 1928, [Convention date]. Condensers are manufactured by a method acording to which the capacity is measured by an ammeter during the winding process, ohmic resistance being neglected. Winding is discontinued when the predetermined current is indicated, either by operation of an indicator or by mechanism such as a relay which automatically stops the winding operation.
Patent GB-673620-A (GB)
Title: Device for igniting vapour discharge apparatus of the liquid cathode type
IPC: H01J13/48
Filed: 1950-10-05
Abstract: 673,620. Metal vapour discharge apparatus. AKT.-GES. BROWN, BOVERI, & CIE. Oct. 5, 1950 [Oct. 12, 1949], No. 24347/50. Class 39 (i). A device for igniting a vapour discharge device 1 having, a resistance igniter 2 and exciter anode 3 comprises a choke coil 8 in series with a D.C. source 4 in the igniter-exciter circuit and a relay 9 for starting ignition. The relay serves to close and open a D.C. shunt circuit to the igniter-exciter circuit in dependance on the voltage Ug so that when the shunt circuit is opened an ignition impulse is released and the excitation initiated. To start the ignition a main switch 6 is closed, the high voltage Ug causing relay 9 to close contacts Kl, K2. Closure of contacts Kl closes the shunt path so that a short-circuit current flows through coil 8 causing the voltage Ug to fall, which together with the effect of a resistance R2 placed across the relay 9 by the contacts K2 causes the relay 9 to become de-energized, opening contacts K1, K2, thus applying the ignition impulse to the device 1.
Patent GB-744204-A (GB)
Title: Improvements in or relating to the control of the rotational direction of synchronous electric motors
Inventor: ELLIS JOHN WYNDHAM
IPC: G04C15/00
Filed: 1953-09-03
Abstract: 744,204. Devices ensuring uni-directional rotation. SMITH & SONS (ENGLAND), Ltd., S. July 29, 1954 [Sept. 3, 1953], No. 24433/53. Class 80(4) A uni -directional starting device for a synchronous electric motor driving worm reduction gearing 3, 6 is of the type wherein two stop members collide if the motor starts in the wrong direction, the resulting impulse reversing the motor. Since such devices require the torque available on the slow-speed shaft, whereas a sufficient impulse to reverse the motor cannot be transmitted back through the worm gearing, the device is arranged so that an' impulse is applied to a pin 5 on the motor shaft by a lug 20 on a member 17 movable between two stationary positions by a slipping coupling on the slow-speed shaft 7. To effect the slipping coupling, the member 17 is loose on the shaft 7 between a pair of loose friction washers bearing respectively against a collar on the shaft and a helical spring whose other end is anchored to the wheel 6. According to the direction of rotation of shaft 7, the member 17 is moved to one or other of two positions determined by a fixed pin 14. As shown, rotation is in the desired direction and lug 20 is clear of the path of pin 5. If the motor starts in the reverse direction the lug 20 is moved into the path of pin 5 and the resulting impulse on the one hand maintains the member 17 against the pin 14 and on the other hand reverses the motor.
Patent GB-502026-A (GB)
Title: Improvements in or relating to wrapping paper for photographic film
IPC: G03C3/02
Filed: 1937-09-09
Abstract: 502,026. Cellulose ester compositions. KODAK, Ltd. Sept. 9, 1937, No. 24547. Convention date, Sept. 17, 1936. Drawings to Specification. [Class 2 (ii)] [Also in Groups XX and VIII] A-protective material for a sensitive photographic layer comprises an opaque support coated with a mixture of a cellulose mixed organic acid ester and a synthetic resin. The support may be paper of the duplex type with black and red or green layers bonded together, the coating being applied to the red or green surface. Suitable mixed esters are cellulose acetate propionate and cellulose acetate butyrate. Suitable resins are polyvinyl esters, polyvinyl acetals, alkyd resins, and polystyrene resins. Resins known under the Registered Trade Marks " Gelva," " Formvar," '' Alvar," " Glyptal," and under the trade name '' Victron," are referred to. Specification 351,082 is referred to.
Patent GB-721642-A (GB)
Title: Improvements in or relating to millinery
IPC: A42B1/20
Filed: 1952-10-02
Abstract: 721,642. Headwear. COAKLEY, A. A. Aug. 31, 1953 [Oct. 2, 1952], No. 24661/52. Class 63. A foldable hood or bonnet comprises a strip 1 of flexible material formed with parallel pleats 2 whose end portions are bundled and secured together as at 3, 4 such that when fully extended the material forms a hollowed shape, whilst on pulling the ends 3, 4 the material reassumes a fully folded form and which may then be folded upon itself to fit into a carrying case. Tapes 5, 6 for tying under the chin may be provided.
Patent GB-190521-A (GB)
Title: Improvements in dynamo-electric machines
IPC: H02K3/51
Filed: 1921-09-17
Abstract: 190,521. Lancashire Dynamo &. Motor Co., Ltd., and Whitmore, K. B. Sept. 17, 1921. Coils and conductors; dampers and shortcircuited screens on cores.-In rotors for dynamoelectric machines wherein the end windings are supported by extended slot wedges, the ends of the wedge-extensions are turned up into a cylindrical spigot so as to fit into an annular recess or socket in a disc or end-plate fixed to the rotor. If the windings are not evenly distributed around the periphery, shallow slots may be cut in the intervening iron portions to accommodate additional wedges. The wedges E, Fig. 1, may be divided at the centre e<2> to prevent the circulation of eddy currents, and the turned ends e<1> are held by annular rings F bolted to extensions b<1> of the end ring B. To give the necessary strength and to suit the shape of the windings, the cross-sectional area of the extended wedges E<3> may be graduated as shown in Fig. 5. 'In a modification, Fig. 6, the wedges E<4> are secured by binding-wire e<3>, and the ends rest on the periphery of the ring F'. Figs. 13 and 14 show the application of the invention to a salient-pole rotor, in which closed slots G<2> are cut in the coreplates A<2>, and bars E<8> are inserted to support the coils D<4>; open slots may be used. The extended wedges may act as damping circuits and ventilating fans.
Patent GB-1004140-A (GB)
Title: Improvements in or relating to safe-load indicators for cranes and the like
IPC: B66C23/90
Filed: 1963-06-21
Abstract: 1,004,140. Safe load indicators. R. L. AITKEN. June 12, 1964 [June 21, 1963], No. 24729/63. Heading B8B. In a safe load indicator for a crane or the like wherein the safe load varies depending on the inclination of the crane jib, a spring-loaded pivoted lever 1 is arranged to close two warning system microswitches 7, 8, one at the maximum safe load and the other at a constant proportion of that load and including means for automatically adjusting the position of the second said switch 8 relative to the lever 1 to maintain this constant proportion. The lever 1 pivoted at 2 and carrying switch strikers 5, 6 is rotated against a compression spring 4 by a roller (not shown) engaging the lever surface 3, the force of the roller being modified for varying angles of the crane jib. The maximum safe load microswitch 7 is rigidly secured to the indicator framework which is secured to the crane jib, and the other switch 8 is pivotally mounted at 9. A roller 14 on a spindle 15 of the switch 8 is engaged by an end 13 of a spring-loaded lever 10, the other end of which engages a cam surface 11. The latter is rotated by a linkage from a portion of the crane so that it assumes a different position for each jig angle and thus alters the position of the switch 8 for the same. In another embodiment the switch 8 is connected directly by a link to a portion of the crane frame. In further embodiments the switch 8 is tilted by a wedge moved accordingly on by a wedge inserted by varying amounts between the switch and the striker. Specification 723,070 is referred to.
Patent GB-615294-A (GB)
Title: Improvements in or relating to floor cramps
IPC: E04F21/22
Filed: 1946-08-20
Abstract: 615,294. Floor cramps. SAYER, E. C., and FRIDAY, F. W. Aug. 20, 1946, No. 24793. Addition to 593,166. [Class 61 (ii)] The ram of a floor cramp and the jaws which grip the joist are actuated by fluid pressure by means of a pump and a distributing chamber. The body 1, Fig. 1, of the cramp comprises a longitudinal ram cylinder 3 in which a ram 4 and plunger 6 slide. A transverse cylinder 7, Fig. 4, also carries a plunger 8 and rod 9 to which a bridge 10 is secured. The bridge 10 is also secured to two rods 13, 14 which slide in holes 15, 16 in the body 1 and carry the movable joist-engaging jaw 17 on their opposite ends. The fixed joist-engaging jaw 2 is integral with the body 1. The body 1 also comprises a pressure fluid chamber 21 connected by means of a one-way valve 30 and distributing chamber 32 to a pump cylinder 25 in which a reciprocable spring-pressed plunger 26 slides. This plunger 26 has an extension 28 which projects from the body 1 and engages the handle 37 of the cramp which is pivoted on upstanding lugs 35 on the body 1. Reciprocation of the handle 37 moves the pump plunger 26 and draws pressure fluid into the chamber 32 and thence into cylinders 3, 7 by means of passages 33, 34; thus drawing together the joist-engaging jaws and extending the ram 4. A valve 47 in the cylinder 3 leads back to the chamber 21 to prevent excessive extension of the ram. In order to release the joist-engaging jaws and withdraw the ram, a release valve 43 is provided, manually operable by means of a wing-nut.
Patent GB-954245-A (GB)
Title: Improvements in or relating to cable drums or reels
IPC: B65H75/02
Filed: 1961-07-08
Abstract: 954,245. Reels. J. HILL. Oct. 5, 1962 [July 8, 1961], No. 24798/61. Heading B8M. On a drum or reel having two or more barrels similarly located between side or end flanges, an electric cable or wire rope is wound in the annulus between two barrels with terminal ends or sockets respectively located and fastened externally of the inner or innermost, and of the outer, barrels. The drum shown comprises barrels 10, 11, 12, mounted between flanges 13 each comprising an annulus 14 connected to a plate 15 mounted on a shaft 16 by spokes 17 attached to a collar 18. A terminal end of a cable 22 is secured to barrel 10 and the cable is guided by a ramp 25 through an opening 19 into the annulus between barrels 11 and 12 where it is coiled around barrel 11 before passing over a ramp 24 and through an opening 20 in barrel 12 wherearound the remaining cable 22, including terminal end 23, is coiled and secured. The annular space external of barrel 12 may then be lagged or covered prior to despatch of the drum to its position of use. In a modification (not shown) the barrels 11, 12, collectively may be of spiral formation with each barrel constituted by a single whorl, the opening for the passage therethrough of the cable &c. being on the radius which is common to both ends of the spiral.
Patent GB-1469998-A (GB)
Title: Sleeve for cable join
IPC: H01R4/00
Filed: 1974-06-05
Abstract: 1469998 Cable insulating sleeves AMP Inc 5 June 1974 [25 June 1973] 24854/74 Heading H2E A sleeve assembly 10 for application to a cable splice comprises a stretched elastic sleeve 12, e.g. of butyl rubber extending through a tubular support member 14, the ends of the sleeve 12 being rolled back over the support member 14 prior to installation over the splice and the support member 14 being split longitudinally so that it can be opened out and removed from the cable after unrolling the sleeve 12 from the support member 14. The assembly preferably includes an inner tube 16, e.g. of polyvinyl chloride which is split longitudinally by a removable I strip 28 and on which the sleeve and support member can be assembled, the resulting assembly being slid over the cable splice and the tube 16 then removed by withdrawing the I strip and squeezing the tube to reduce its diameter. The assembly can be made (Figs. 6 to 11, not shown) by installing the tube 16 on a split mandrel (56), sliding the sleeve 12 over it with the aid of a compressed air supply, rolling up the ends of the sleeve, unrolling over sleeves (70, 70<SP>1</SP>), sliding tube 14 over sleeve 12, pulling sleeves (70, 70<SP>1</SP>) to stretch sleeve 12 and finally rolling up the ends of sleeves 12 on to support 14. The support member 14 preferably includes annular abutments 22 and grooves 44 at one or both ends to assist retention of the sleeve, and the inner surface 50 of the support member 14 carries serrations or ribs to inhibit sliding. The edges 38 of the split 36 in tubes 14 have interengaging teeth to inhibit relative radial movement (Fig. 4, not shown). Mastic can be applied to the cable adjacent the splice prior to unrolling the sleeve.
Patent GB-599971-A (GB)
Title: Improvements in and relating to the colouring of copper and copper-alloy surfaces
IPC: C23C22/63
Filed: 1945-09-25
Abstract: Copper and copper-alloy surfaces are coloured by treating with an aqueous solution of a chlorite of an alkali or alkaline earth metal and an alkaline salt, to which may be added a strong alkali, e.g. sodium or potassium hydroxide.  The alkaline salt may be sodium carbonate, metasilicate, tetraborate (borax), trisodium phosphate, tetrasodium pyrophosphate, sodium sesquisilicate or orthosilicate, or the corresponding potassium or alkaline earth metal compounds where water-soluble; and a plurality of such alkaline salts and/or chlorites may be used.  The water-soluble composition consisting of 1 part by weight of chlorite and 1 to 2.5 parts of alkaline salt with optionally up to 50 per cent of strong alkali, is made up into a solution of any concentration between 4 gm. (total) of salts per litre and saturation, and preferably lying between 10 gm. of chlorite and 20 gm. of alkaline salt per litre and 80 gm. chlorite and 160 gm. of alkaline salt per litre.  The treatment is carried out at a temperature from 70 DEG  F. to the boiling point of the solution, preferably between 120 DEG  and 200 DEG  F., after clearing the surface to "no water-break," and a finishing coat of lacquer, wax or oil may be applied. Copper-alloys treated by the process must contain at least 60 per cent copper.  Specification 595,596 is referred to.
Patent GB-1434516-A (GB)
Title: Metal casting
IPC: B22D18/06
Filed: 1974-06-05
Abstract: 1434516 Vacuum-casting HITCHINER MFG CO Inc 5 June 1974 24957/74 Heading B3F [Also in Division F4] Casting apparatus comprises a crucible 20 in a sealable melting and mold pouring chamber 12, a sealable loading compartment 14 mounted on the chamber, a valve 18 and conduit means 16 between the chambers, a sealable mold container 40 having a bottom opening 42 for sealing around the lower open end 46 of a gas permeable mold 48 supported therewithin and extending downwardly therebeyond, the mold container including upper and lower cup elements 58, 56, power means 64, 68, 70 for supporting the cup elements for relative movement into sealed relationship and for moving the container between the chamber and the compartment, and means 88, 89, 60 for independently varying the pressure of the chamber. The crucible 20 is mounted by load-measuring cells 30 on a platform 26 movable by a hydraulic device 32 on a platform 34 which also supports a closure plate 36. The mould 48 is a refractory gas-permeable shell mould for golf-heads. The riser passage 50 is 1-10 square inches in cross-sectional area and at least five time the area of a gate passage 54. The container 40, the compartment 14 and the chamber 12 are evacuated by pipes 60, 80, 82 and supplied with argon or other inert gas from a bottle 86 through the pipe 60, a valve 89 and a valve 88. In operation, an ingot is melted in the crucible 20 by induction coils 24 while a vacuum of 10 microns is applied. When melted, the metal is stirred by the coils to produce an upward central current and move the dross away from the central area. With the parts positioned as shown, a vacuum of 10 microns is produced in the container 40 and compartment 14 and argon then supplied at 25 inches mercury. The valve 18 is opened and the neck of the mould lowered into the molten metal. When solidification has occurred as shown in Fig. 7, the argon pressure to the container 40 is raised causing the unwanted molten metal to be expelled, leaving the central gate 55 and initial parts of the runners free of metal. The container 40 is then raised and drip doors 76, 78 are closed. A pair of tongs may be temporarily fitted in place of the mould container part 56 in order to lower an ingot to refill the crucible.