baber/WOPTO huggingface dataset:
Patent GB-1239893-A (GB)
Title: Improvements in or relating to photocathodes
Inventor: SELWAY PETER RICHARD
IPC: H01J1/34
Filed: 1970-03-05
Abstract: 1,239,893. Cathode materials. STANDARD TELEPHONES & CABLES Ltd. 5 March, 1970, No. 10626/70. Heading H1D. A photocathode comprises a single crystal substrate of Al-Ga arsenide containing sufficient Al to provide it with a band width larger than GaAs and a caesiated layer of P-type GaAs of a thickness less than its electron diffusion length. The cathode is prepared by placing a single crystal seed of GaAs in contact with a melt of Ga, As and Al to form a layer of Al 0 . 5 Ga 0 . 5 As. This is lapped and polished and a layer of P- type GaAs vapour deposited. The seed crystal is removed by lapping, a Au ring contact is added and the surface of GaAs cleaned by baking in an ultra high vacuum. A thin layer of Cs is deposited under vacuum then O 2  is admitted to oxidize the surface, this is repeated at least 3 times.
Patent GB-674456-A (GB)
Title: Improvements in methods and apparatus for catching and collecting running strands offilamentary or fibrous material
IPC: B65H54/88
Filed: 1950-05-01
Abstract: 674,456. Catching and collecting running yarns &c. AMERICAN VISCOSE CORPORATION. May 1, 1950 [June 9, 1949], No. 10679/50. Classes 120(ii) and 120(iii) A method of and apparatus for catching and collecting a running yarn &c. supported upon a treating reel &c. is characterized in that the yarn &c. is severed by impact thereon of a device,' e.g. a nozzle, of greater hardness than the yarn &c. while the same is supported by the reel &c. while at the same time suction is applied at the point of impact to capture the loose end produced by the impact. As shown, yarn &c. on the bars 32 of a treating reel is severed by the impact thereon of a nozzle 18 connected by a flexible tube 22 to a hollow member 6, 31 provided with air at super-atmospheric pressure through a tube 9. The loose end is sucked through a passage 12 and enters a permeable bag 26 which allows air to escape while retaining the treating fluid carried in with the yarn. In a modification, the bag is replaced by a rigid cylindrical container furnished at its end with a filtering chamber. In a further modification, the rigid cylindrical chamber is divided longitudinally into a smaller and a larger compartment by an apertured plate, the air pressure supply pipe to the nozzle passing through the smaller compartment.
Patent GB-460109-A (GB)
Title: Variable self-inductances
IPC: H01F21/06
Filed: 1936-04-14
Abstract: 460,109. Inductances. LORENZ AKT.- GES., C. April 14, 1936, No. 10708. Convention date, Aug. 30, 1935. [Class 38 (ii)] In a variable self inductance of the variometer type, the inner coil is in two parts arranged on high frequency iron cores. The arrangement is designed to give substantially constant attenuation for any value of inductance, and is contrasted with other arrangements having a single movable winding with and without an iron core and with arrangements in which an iron core is displaced axially within a fixed coil.
Patent GB-693147-A (GB)
Title: Improvements relating to drop hammers
IPC: B21J7/44
Filed: 1951-05-07
Abstract: 693,147. Drop hammers. EUMUCO AKT.- GES. FUR MASCHINENBAU. May 7, 1951 [May 15, 1950], No. 10711/51. Class 83 (iv). In a drop hammer with an electric motor drive the hammer 8 is raised through a distance of not more than one metre by winding a link chain 23 over the periphery of an eccentricallymounted disc 20. A shaft 13 on which the eccentric disc 20 is mounted is driven intermittently by an electric motor 9 through a pneumatically-actuated disc clutch 27, the shaft being rotated through one complete revolution and then released. A spring-loaded brake 21 on the shaft 13 is released by pneumatic means as the clutch is engaged, both the brake and clutch being controlled through a valve which is actuated by a pedal or by the hammer at the ends of its stroke. The upper end of the chain 23 is connected to a pin 24 on the periphery of the disc 20 at the point of minimum radius so that the speed at which the hammer is raised is gradually increased and then gradually decreased throughout the stroke. The lower end of the chain 23 is connected to the hammer 8 through a rubber shock-absorber 25.
Patent GB-527276-A (GB)
Title: Improvements in or relating to venetian blind ladder webbing and the like
IPC: D03D1/08
Filed: 1939-04-06
Abstract: 527,276. Woven fabrics. FRENCH & SONS, Ltd., T., and FRENCH, G. F. April 6, 1939, No. 10725. [Class 142 (iv)] Ladder webbing or like material consisting of two bandings connected at intervals by cross straps or threads 20 is woven with two wefts per band at each shedding. Four superposed shuttles are used, the two shuttles 12, 13 for one band and the two shuttles 15, 16 for the other band preferably moving in opposite directions. The cross warps 17 are woven in with the lower warps 8 of the upper band by the lower shuttle 13, and with the upper warps 9 of the lower band by the upper shuttle 16. The cross warps may be in two lots 18, 19 which at the binding in points engage alternate wefts 13 or 16, Fig. 4, or one weft as 16 of each pair may pass through a shed formed by the cross warps 17 only and the other weft 15 through a shed formed by the banding warps 9, 10 only, thus forming a tubular binding in portion as shown in Fig. 5 where 25 are the cross warps and 22 the banding warps. Six superposed shuttles are used when the two rows of cross warps are woven into tapes. Specification 512,835 is referred to.
Patent GB-473553-A (GB)
Title: Improvements in and relating to rotary kilns
IPC: F28F13/00
Filed: 1936-04-14
Abstract: Chains are used in the helical channels formed in the drying zone of a rotary kiln for promoting transfer of heat between the kiln gases and the charge, instead of loose bodies of heat-resisting material as described in Specification 437,512. The chains may be connected to the kiln shell at one end only; or to the kiln shell at one end and to the central support for the helical partitions at the other, and in this case the chains may form curtains stretched to degrees of tightness which may increase from the inlet end of the kiln.  The helical channels may be divided into a number of sections by perforated walls, which may be formed by chain curtains.  Reference has been directed by the Comptroller to Specification 448,778.
Patent GB-643419-A (GB)
Title: Improvements in false ceilings for buildings
IPC: E04B9/22
Filed: 1948-04-19
Abstract: 643,419. Ceilings. MENUISERIE DE L'OZON. April 19, 1948, Nos. 10758 and 10759. Convention dates, April 17, 1947, and Aug. 28, 1947. [Class 20(iv)] A light trans mitting false ceil ing adapted to be positioned at any desired height un der, for example a saw-tooth roof comprises an assembly of tongued anc grooved frames each covered with transparent or translucent sheet or cloth, the frames being engaged and supported by wires or cables stretched between the walls of the building. In one construction, the ceiling is formed of light wooden frames 1 covered with a suitable transparent or translucent material. The side edges of adjoining frames have interfitting tongues 4 and grooves 3, a wire 2 being laid along the bottom of each groove and secured to walls by hooks 5, the wires being tensioned by adjusters 6, thus forming the support for the frames. To complete the ceiling, sheets of transparent material 7 are secured between the wall and the adjacent frame edges. Some or all of the frames can be made detachable (Figs. 5 and 6, not shown) for cleaning purposes. For large spans, where sagging might occur, a system of catenary and suspension wires is arranged above the ceiling (Fig. 7, not shown).
Patent GB-108002-A (GB)
IPC: B24B3/36
Abstract: 108,002. Hill, J. A. June 20, 1916. Knives, cleaning. - Razor-atropping machines of the kind described in Specification 29498/10, [Class 60, Grinding or abrading &c.], are adapted for cleaning knives of varying lengths. In a machine of this kind, the blade to be treated is reciprocated between sharpening-disks by a carrier B operated by a crankpin C on a wheel D which is rotated by the driving-means of the machine. According to the invention, an adjustable stop H is provided on the carrier B to position knives of different lengths centrally with regard to a clip B<2> on the carrier, and known mechanism of the following character is provided to give a variable-throw to the crank-pin C. A disk F is mounted concentrically with, and angularly adjustable in relation to, the crank-pin wheel D, the crank-pin C being mounted in a radial slot D' in the wheel D and having a foot C<2> which extends into a cam-groove F' in the disk F: The throw of the crank-pin can thus be varied by rotating the disk F witH regard to the wheel D. A detent G fixed to the rotatable spindle E carrying the wheel D, and engaging one of a series of numbered recesses in the back of the disk F, locks the disk against accidental displacement relatively to the wheel D. The adjustable stop H is held in position by a detent H<2>, and is provided with a series of numbered indications corresponding to the. numbered recesses in the disk F. Thus when the stop H is suitably positioned for a knife of a certain length, it is only necessary to set the disk F to the same number to ensure that the correct length of reciprocation will be given.
Patent GB-1174345-A (GB)
Title: Combined Propeller Pitch Lock and Low Pitch Stop System.
IPC: B63H3/08
Filed: 1967-03-08
Abstract: 1,174,345. Variable-pitch aircraft-propellers. UNITED AIRCRAFT CORP. 8 March, 1967 [30 March, 1966], No. 10853/67. Heading B7V. A variable-pitch aircraft-propeller 2, Fig. 1, includes a lever 18 to prevent excessive pitchreduction during normal flight, which lever can be moved when necessary, e.g. during a landing operation, to allow a pitch-changing piston 15 to be further displaced in the pitch-reducing, or reversing, direction. An hydraulic system associated with the propeller comprises an hydraulic-fluid reservoir 20 at atmospheric pressure, a further reservoir 22 at a higher pressure, a pump 24, and a constant-speed governor 26 controlling the flow of fluid into high and low pitch pipes, or " lines," 28 and 30, 32, respectively, which lines direct fluid to opposite sides of the piston 15. During a landing operation, a wedge 34 that normally holds the lever 18 in the position shown to act as a stop for the piston 15 is retracted to permit additional pitch-reduction as initiated by the governor 26, retraction of the wedge being effected electrically in response to operation of a corresponding switch in the cockpit of the aircraft. A pitch-lock mechanism in the propeller includes an annular member 70, Fig. 4, connected by splines to a pitch-changing cam 10 associated with the piston 15, and another annular member 72 fixed to the hub 4 of the propeller, ratchet teeth 74, 76 being formed on said members to prevent relative rotation thereof in the pitchreducing direction when the teeth intermesh. The members 70, 72 are biased towards each other by springs 78 and can be separated by fluid pressure in a chamber 80. A pair of cam elements 81, 82 hold the two members aforesaid apart when necessary. The chamber 80 is pressurized to separate the two members by the pump 24 through a valve 84 and lines 85, 86, 88, 90, 91, 92 during normal operations. If the engine-speed becomes excessive, pressure in the chamber 80 is released by a governor 94 to bring the members 70, 72 together and thereby obviate excessive pitch reduction. During ground-handling operation of the aircraft, switches (100, 102), Fig. 2 (not shown), are closed to energize solenoids 36, 104 associated with valves 114, 106, respectively, resulting in pressurization of the chamber 80 and retraction of the lever 18. When the governor 26 is in an underspeed condition during such operation, the consequent reduction of pitch actuates a switch (128) in the circuit of the solenoid 36 to effect de-energization thereof and hence loss of pressure in the chamber 80 to prevent further pitch reduction. Pitch reversal is obtained by rendering the governor 26 in an underspeed condition and by appropriate actuation of cams 60, 62 to open the valves associated therewith. During pitch reversal the chamber 80 is pressurized and the wedge 34 fully retracted to prevent the lever 18 engaging with the piston 15.
Patent GB-1064973-A (GB)
Title: Improvements in or relating to wires, strands and ropes
Inventor: CAMPBELL ROBERT EDWARD
IPC: H01B7/28
Filed: 1964-03-13
Abstract: A method of coating wires, either in individual form or made up in strands or ropes, with an anticorrosive and lubricating layer comprises coating the wire under pressure e.g. using an annular device such as a drawing die or nips (split die), with a homogeneous dispersion of at least one finely divided metal or metal alloy in a resinous base comprising a phenol-formaldehyde condensation reaction product.  The wire may be drawn using the homogenous dispersion as a drawing lubricant.  The wire may be stranded using the homogeneus dispersion as a lubricant at the stranding point.  The strands may be closed using the homogeneous dispersion as a lubricant in the closing operation.  The strands may be closed around a fibrous core e.g. of steel, natural or synthetic fibre such as manilla, sisal, jute or hemp, which is first coated with the homogeneous dispersion.  The finely divided metal may be zinc or a mixture or alloy of zinc and aluminium, e.g. a mixture of zinc and aluminium having a zinc to aluminium ratio of 5/95 to 95/5 or an alloy of zinc and aluminium having a zinc to aluminium ratio of 40/60 to 60/40 .  The total metal content may be in the range 5 to 80% by weight of the combined weight of metal and resin.  The metal or alloy may be in flake form and of particle size such as will pass a 300 mesh screen but not a 400 mesh e.g. a 325 mesh screen.ALSO:A method of coating wires, either in individual form or made up in strands or ropes, with an anticorrosive and lubricating layer comprises coating the wire under pressure e.g. using an annular device such as a drawing die or nips (split die), with a homogenous dispersion of at least one finely divided metal or metal alloy in a resinous base comprising a phenol-formaldehyde condensation reaction product.  The wire may be drawn using the homogeneous dispersion as a drawing lubricant.  The wire may be stranded using the homogeneous dispersion as a lubricant at the stranding point.  The strands may be closed using the homogeneous dispersion as a lubricant in the closing operation.  The strands may be closed around a fibrous core e.g. of steel, natural or synthetic fibre such as manilla, sisal, jute or hemp, which is first coated with the homogeneous dispersion.  The finely divided metal may be zinc or a mixture or alloy of zinc and aluminium e.g. a mixture of zinc and aluminium having a zinc to aluminium ratio of 5/95 to 95/5 or an alloy of zinc and aluminium having a zinc to aluminium ratio of 40/60 to 60/40 . The total metal content may be in the range 5 to 80% by weight of the combined weight of metal and resin.  The metal or alloy may be in flake form and of particle size such as will pass a 300 mesh screen but not a 400 mesh e.g. a 325 mesh screen.
Patent GB-656063-A (GB)
Title: Receiver for signals consisting of variations of resistances or voltages in an electrical circuit
Inventor: OBERMAN ROELOF MAARTEN MARIE
IPC: H04Q1/18
Filed: 1948-04-20
Abstract: 656,063. Automatic exchange systems. STAATSBEDRIJF DER POSTERIJEN TELEGRAFIE EN TELEFONIE. April 20, 1948, No. 10923. Convention date, April 21, 1947. [Class 40 (iv)] In a receiver for digital signals consisting of the connection of different resistances or voltages into a circuit, the signals are grouped in pairs, each pair containing an odd and an even signal, and the receiver first determines the pair to which the signal belongs and then further determines whether the signal is odd or even. Resistances capable of producing at B of a comparison circuit signal voltages of - 32, - 34, - 36 ... - 52, are inserted at TSL. Relay NW operates over its coil NW(i) and the chain A... E is run down applying in turn voltages from the potentiometer R1 ... R7 of - 34, - 38, - 42 ... - 50 to point A of the comparison circuit until NW releases to stop the running down of the relay chain. Relay F then comes up to connect up coil NW(ii) of the relay NW. According as the signal is even or odd NW re-operates or not so that G only comes up in the latter case. The settings of relays B ... E, G are transferred to storage relays over leads 1, 2, 4, 8 via the wipers of a distributer switch (not shown) stepped by relay F. The relay chain may be replaced by a rotary or a cross-bar switch. Specification 655,369 is referred to.
Patent GB-1161922-A (GB)
Title: Improvements in or relating to Collet Holders for Drum Drawing Machines
Inventor: SCHMIEDT HANS
IPC: B21C1/14
Filed: 1967-03-08
Abstract: 1,161,922. Drawing tongs. SCHWERMASCHINENBAU HEINRICH RAU, VEB. 8 March, 1967, No. 10953/67. Heading B3P. A pivotable collet holder for a drum-type drawing machine comprises a cranked lever 1, gripping jaws 5 at one end of the lever and a counter-weight 3 and a stop 16 at the other end, the lever being pivotally mounted at 2 so that it is movable between the full-line position in which the workpiece can be engaged by the jaws and the dotted line position in which the collet does not project above the surface of the drum. The lever 1 comprises two parallel side plates between which are mounted guides 6 for the jaws 5 which are moved inwards to grip the workpiece by axial movement of a spindle 10 to which is secured a plate 12. The spindle is actuated by a lever 8 and its return movement (to the right in Fig. 1) is limited by a stop (14), Fig. 2 (not shown). When the stop is withdrawn the spindle can be moved to a position in which the jaws are clear of their guides and can be exchanged. The jaws are opened by a spring 11 at the end of each drawing cycle. A screw-stop 16 projecting from the counterweight engages the inside of the drum to determine its innermost position. A scale 17 facilitates positioning of the stop. A second stop 19 adjusts the outward position of the collet.
Patent GB-1536035-A (GB)
Title: Surface treatment process for dispersibility of an absorbent composition and product thereof
IPC: B01J13/00
Filed: 1976-03-18
Abstract: 1536035 Water - absorptive particles NATIONAL STARCH & CHEMICAL CORP 18 March 1976 [9 May 1975] 11028/76 Heading C3L Water - absorptive particles based on water-insoluble anionic polyelectrolytes are rendered more easily water-dispersible and less liable to lumping by a surface treatment involving dispersing the particles in a non- solvent and treating with polyvalent metal cations in an amount and for a time to ionically complex the surfaces of the particles. The starting materials may be ionically or covalently cross-linked. Examples refer to the treatment of a partially neutralized saponified acrylonitrile-starch graft polymer, a covalently cross-linked acrylic acid/acrylamide copolymer and polymers of acrylic acid cross-linked with allyl methacrylate and aluminium ions or with methylene bisacrylamide. Treatment is effected in methanol with ions of Zn, Al, Cr, Mn, Co, Ba or Sn.
Patent GB-164209-A (GB)
Title: Improved method of and apparatus for making scarves, and the like
IPC: D04D7/00
Filed: 1920-04-21
Abstract: 164,209. Paterson, T. April 21, 1920. Knitted fabrics; knitting, methods of.-Scarves, ties, &c. are made by hand on a work frame consisting of a board 1 having two rows of projecting pegs 2 with enlarged heads 2a situated along a centre slot 3. The yarn 4 is passed around alternate pegs in a zig-zag manner so that consecutive courses cross and overlap as shown. After one or more courses of yarn have been laid, the yarn may be passed round an end peg 5 to secure it, and the loops of the lowest course are then thrown over the heads 2<a> by means of a suitable tool, after which one or more courses are again laid and the operation is repeated. Fringes may be made by laying in loose yarns 6b as shown. The end of the article may be finished off by knotting the last course of loops on to separate tassel pieces or fringes. Fig. 5 is a fragmentary view of the completed fabric.
Patent GB-108513-A (GB)
Title: Improvements in or relating to Automatic Feed-regulators for Boilers and the like.
Inventor: ANTHONY ALFRED HYMAN
IPC: F22D5/10
Filed: 1916-08-05
Abstract: 108,513. Anthony, A. H. Aug. 5, 1916. Feed-water, controlling.-Relates to automatic feed-regulators of the kind in which the feed-check valve is controlled by the leakage of feed-water past a piston on the stem of the valve, the escape of the leakage water from behind the piston being controlled bv a float, as described in Specification 16097/02. The escape of the leakage water is controlled by a small piston past which the water leaks at a rate less than that at which it leaks past the piston on the feed-valve. The escape of water from behind the piston A, Fig. 1, through the pipe A<1> and valve D to the outlet J is controlled by a piston E on the stem of the valve D. When the water-level falls, the float-controlled valve G opens, and allows the leakage water behind the piston E to escape, thus closing the valve D, and balancing the piston A, and allowing the feed-valve to be forced from its seat by the pressure of the feed-water. In the modification shown in Fig. 2, leakage water is not allowed to flow past the piston E, the piston being controlled by water from the float-chamber entering the space behind the piston through a passage K. The spring-loaded valve D controls the escape of leakage water from behind the piston on the feedvalve. The piston on the feed-valve may be dispensed with, and a small piston may be arranged to operate the valve through a mechanism, such as a lever, giving a mechanical advantage.
Patent GB-644586-A (GB)
Title: Improvements in or relating to alternators for generating electricity
IPC: H02K19/28
Filed: 1947-04-25
Abstract: 644,586. Alternators. LEECE-NEVILLE CO. April 25, 1947, No. 11103. Convention date, May 20, 1946. [Class 35] A generator to supply a D.C. load comprises a polyphase alternator whose stationary armature 13 is connected through a bridge-connected dry rectifier 28 feeding both the external load and the rotary field member 12. Current passes to the rotor through a brush 22 and slip-ring 24 and returns through the shaft which is earthed by a brush 21. making contact with the end cover 19. A voltage cut-out relay is described for use when charging batteries. The rectifier may be mounted on the generator housing. Specification 644,587 is referred to.
Patent GB-481697-A (GB)
Title: Improvements in or relating to flat knitting machines
IPC: D04B7/04
Filed: 1937-04-19
Abstract: 481,697. Knitting-machines. STOLL, H., and STOLL, R., (trading as REUTLINGER STRICKMASCHINENFABRIK H. STOLL & CO.). April 19, 1937, No. 11106. Convention date, April 17, 1936. [Class 74 (ii)] In flat machines wherein loops are transferred from the needles of one bed to those of another, each transferring needle has attached to its stem a wire spring e that is deflected by the entrance of a receiving needle between the needle stem and the spring to expand or spread the loop to be transferred. For this purpose and to effect a gradual widening, the hook of the receiving needle is bevelled to co-operate with an inclined wall f of the transferring needle. The free end of the spring runs in a groove e<1> in the needle and during the movement of the needle it slides against a guide wall l of the needle track, two inclined surfaces m, n being provided within the trick to push an improperly positioned spring into its groove.