baber/WOPTO huggingface dataset:
Patent GB-977805-A (GB)
Title: Method for preparing glycol esters and polyesters
IPC: C08G63/85
Filed: 1962-03-27
Abstract: In the manufacture of glycol esters of dicarboxylic acids by the trans-esterification process, a niobium compound is used as a catalyst. Specified compounds are the oxalate, pentoxide, pentachloride and pentaalkoxides.  As an additional catalyst, zinc acetate or manganous acetate may be used.  Specified glycols are ethylene-, propylene-, hexamethylene- and diethylene-glycol, and 2,2-bis[4-(b -hydroxyethoxy) phenyl] propane.  Specified dicarboxylic acids are sebacic, adipic, azelaic, naphthalic, phthalic, isophthalic and terephthalic acid.  In examples, transesterification reactions are effected between ethylene glycol and dimethyl terephthalate (or a mixture thereof with dimethyl isophthalate) to produce the bis(ethylene glycol) esters. Specification 877,539 is referred to.ALSO:In the manufacture of linear polyesters by polycondensing a bis (glycol) ester of a dicarboxylic acid, a niobium compound is used as a catalyst.  Specified compounds are the oxalate, pentoxide, pentachloride and pentaalkoxides. The bis (glycol) ester may be made by an ester-interchange reaction and the niobium compound may also be used to catalyze the ester-interchange reaction.  As an additional catalyst, zinc acetate or manganous acetate may be used.  Specified glycols are ethylene-, propylene-, hexamethylene-and diethylene-glycol and 2, 2-bis [4-(b -hydroxyethoxy) phenyl] propane. Specified dicarboxylic acids are sebacic, adipic, azelaic, naphthalic, phthalic, isophthalic and terephthalic acids. In examples, polyesters are made by reacting ethylene glycol with dimethyl terephthalate (or a mixture thereof with dimethyl isophthalate). Specification 877,539 is referred to.
Patent GB-194191-A (GB)
Title: Improvements in superheaters for water tube boilers
IPC: F22G7/14
Filed: 1922-04-25
Abstract: 194,191. Yarrow, H. E. April 25, 1922. Controlling and moderating superheat; mounting and supporting superheaters.-For varying superheat, the superheater tubes are swung into different positions within the furnace setting of the boiler. The superheater drum D has compartments D<1>, D<2> carrying the U-shaped superheater tubes F. A steam supply pipe enters the drum through a stuffing-box H whereby the drum D can be rotated to change the position of the tubes F. In a modification, the drum is at the top of the boiler and the U tubes hang downwardly. Instead of a stuffing-box connection, the flange of the steam pipe may be connected to a flange on the drum through an intermediate fitting having different numbers of stud or bolt connections with these two flanges, so that on breaking the joints the drum may be reset in new positions.
Patent GB-499846-A (GB)
Title: Improvements in or relating to fastenings for cowlings, inspection doors and the like on aircraft and other means of transport
IPC: B64D29/08
Filed: 1937-04-23
Abstract: 499,846. Fastenings. NAAMLOOZE VENNOOTSCHAP NEDERLANDSCHE VLIEGTUIGENFABRIEK. April 23,1937, No. 11637. Void. Convention date, July 25, 1936. [Class 44] A fastening for cowlings, inspection doors, &c. of aircraft comprises a spring-wire member 4 slidable in an opening in a member 6 secured to the cowling 1 and adapted to engage the part 7 to which the cowling is to be fastened. Member 4 is pivoted to and operated by a flap 2, cut from the cowling and pivoted thereto at 3. In the fastened position shown in full lines, the flap lies flush with the cowling. Member 4 is retracted by pressing the flap to tilt it to the position shown dotted. The member 4 is bent as shown so that its resilience holds the flap against accidental movement in each of its extreme positions.
Patent GB-1187593-A (GB)
Title: Improvements in or relating to Decollator Units
Inventor: GILL EDWARD WILLIAM
IPC: B41L1/00
Filed: 1966-08-16
Abstract: 1,187,593. Decollating continuous stationery. LAMSON PARAGON Ltd. 4 Aug., 1967 [16 Aug., 1966; 13 March, 1967], Nos. 36653/66 and 11646/67. Heading B8R. In a decollating apparatus, each record web passes from a pack 3 over a driven roller 10 to a platform 7, and a freely rotatable disc 16 is associated with at least one of the rollers 10 to press the web against the roller. The intermediate carbon web, if one is present, is wound upon a spindle 12 comprising two end discs joined by two rods as described in Specification 988,387. A motor 21 drives the rollers 10 and spindle 12 by means of an endless belt 25 passing around pulleys on the ends of the parts 10, 12. The pulley on one of the rollers 10 comprises two parts (Fig. 4, not shown) axially adjustable so as to adjust its effective diameter and thus vary the roller speed. Each disc 16 is rubbertyred and rests on the centre of its roller. Levers 17 carry the discs 16 and are pivoted to a lever 18 which can be turned in a clockwise direction to remove the discs from the rollers. If one of the record webs is of heavier weight than the other, both discs 16 can be placed in contact with that web.
Patent GB-1350691-A (GB)
Title: Method of purging a mixing chamber of a spraying machine
IPC: B29C48/27
Filed: 1971-04-27
Abstract: 1350691 Mixing apparatus SVENSKA AB PLASTIC PROTECTION 27 April 1971 [27 April 1970] 11670/71 Heading B1C In a method and apparatus for mixing and spraying the components of epoxy or urethane resin having a short polymerization time, a mix ing head 1 having a mixing chamber (6) and a stirrer driven by a motor 4 is supplied through two double-flow plug valves 2 (see Figs. 1-6, not shown) operable simulataneously by a lever 3. In one position of the valves (Figs. 4 and 6) air from a compressor 7 passes through passages B1, B2 to close switch 14 of motor 15 driving resin component supply pumps 16; through passage B3 to supply atomizing air to the mixing head; and through valve 9 to actuate cylinder 10 to cause the cleaning fluid pump cylinder 11 to perform a suction stroke. In the other position of the valves 2 (see Figs. 3 and 5) B2 is vented; valve 9 changes over causing the pump cylinder 11 to discharge cleaning fluid through passage A3 to purge the mixer; switch 14 is opened so that the component supply pumps stop; and valve 8 is actuated to cut off air to the mixing motor 4 through a pneumatic time delay 17, allowing the stirrer to operate during purging. The motor 15 drives the pumps 16 through speed variators.
Patent GB-387183-A (GB)
Title: Improvements in and relating to laminated wood products
IPC: B27D1/04
Filed: 1932-04-23
Abstract: 387,183. Insulating-materials. BRITISH THOMSON-HOUSTON CO., Ltd., Crown House, Aldwych, London.-(Assignees of Brossman, J. R. ; 824, S. Ferrell Avenue, Yeadon, Pennsylvania, U.S.A.) April 23, 1932, No. 11680. Convention date, April 24, 1931. [Class 36.] A laminated material having a low water absorption and suitable for electric insulation is formed by impregnating pre-dried, sap-wood veneers under pressure with a phenol-aldehyde condensation product in the form of a varnish, excess varnish being removed and the impregnated veneers dried at 100‹ C. under reduced pressure. The veneers are sprinkled with the powdered resin, assembled in a mould and subjected to a pressure of 1500 pounds per square inch at 140‹ C., the mould being cooled before the material is removed.
Patent GB-995495-A (GB)
Title: Improvements in or relating to ladders
IPC: E06C1/32
Filed: 1962-03-27
Abstract: 995,495. Ladders. W. ZARGES. March 27, 1962 [March 30, 1961], No. 11683/62. Heading A6L. A combined long and step ladder comprises a chain 20 to limit separation of the ladder parts 1 and 7 and convex parts 16 on the part 7 engaging in concave parts 12 on the part 1 to allow pivoting of the parts when in step-ladder form. A rod 6 connecting plates 4 on the side members of the part 1 guides the part 7. Hooks 21 on the part 7 engage a rung on the part 1 when in long ladder form. In a modification, Figs. 4-6 (not shown), pins on the part 7 engage concave surfaces on the part 1 when in stepladder form.
Patent GB-315908-A (GB)
Title: Improvements in and relating to brush gear for dynamo-electric machines
IPC: H01R39/38
Filed: 1928-04-20
Abstract: 315,908. Parsons, Sir C. A., and Rosen, J. April 20, 1928. Brush-holders. - Brush gear for a dynamoelectric machine comprises juxtaposed and insulated rocker rings provided with imbricated brackets, and the positive brushes of a double commutator are carried by the brackets associated with one of the rocker rings and the negative brushes by the brackets associated with the other ring. The rocker comprises two rings G, H of cast iron separated by insulation N and secured together by insulated bolts P. A series of channel like elements H<1> is incorporated in each ring so that the two series are imbricated in relation to each other. Each element has bolted on the faces h, h a pair of radial brush arms E, F carrying brushes D so that all the positive brushes are electrically connected to one ring and the negative brushes to the other, while as seen in end view, the positive and negative brushes alternate. The rocker carrier L carries the rocker rings by means of insulated facings J or the carrier itself may be divided into two insulated parts. Each part of the brush gear may be divided into two or more parts for ease of assembly, and the rocker rings may be provided with thickened portions where the main leads are attached.
Patent GB-946294-A (GB)
Title: Improvements in and relating to electric air-break isolating switches
Inventor: SENHENN WILLIAM EDWARD
IPC: H01H31/16
Filed: 1959-04-07
Abstract: 946,294. High-voltage switches. ENGLISH ELECTRIC CO. Ltd. April 7, 1960 [April 7, 1959], No. 11713/59. Heading H2B. A high-voltage air-break isolating switch has a pair of fixed contacts 15 and a movable bridging conductor 18, 19 which when disengaged from the fixed contacts leaves them separated by a clear air gap, the separation between the fixed contacts and the bridging conductor when the latter is in its open position being at least as great as the effective line-to-ground clearance of the fixed contacts. Each end 18 of the bridging conductor is carried by one end of an insulating arm 17 having its other end pivoted about a transverse axis. In Figs. 1 and 2, the arms 17 and the insulators 12 carrying the fixed contacts 15 are arranged in a common plane and the arms 17 pivot towards each other to open the switch. The bridging conductor comprises contacts 18 interconnected by links 20 and/or a flexible conductor 21. In a slightly modified arrangement the arms 17 are displaced from the plane containing the insulators 12 to enable the length of the switch to be reduced, Figs. 3-5 (not shown). In other arrangements the bridging conductor is rigid and the pivotal axes of the arms carrying this conductor lie in a plane parallel to that containing the insulators 12 or in the plane containing the insulators 12, Figs. 6-8 (not shown). Reference is made to the use of the switch as a load-breaking switch, arc-extinguishing devices being provided. Provision may be made for earthing the bridging conductor in its fully open position and earthing switches for earthing the fixed contacts may take the form of hinged switch blades pivotally mounted at the foot of the insulator columns.
Patent GB-650425-A (GB)
Title: Improvements in or relating to concentric conductor electric cables
Inventor: WESTON WILLIAM KIRBY
IPC: H01B11/18
Filed: 1945-05-10
Abstract: 650,425. Concentric conductor cables. STANDARD TELEPHONES & CABLES, Ltd. May 10, 1945, No. 11723. [Class 36] The invention relates to a coaxial cable with a hollow cylindrical inner conductor member the interior of which houses one or more further conductors. The invention in one aspect consists in that the space between the hollow cylindrical inner conductor member and the outer conductor member is filled with solid insulation. In another aspect the invention consists in that the hollow cylindrical inner conductor member comprises a metal tape folded into tube form with the longitudinal edges interengaging by projections thereon and a thin layer of insulating material being extruded over such hollow cylindrical inner conductor member to maintain the tube form. The coaxial cable shown in Fig. 1 has central, intermediate and outer conductors 1, 3, 6, the intermediate conductor 3 being in the form of a hollow cylinder, the other conductors 1, 6 being spaced from it by solid dielectric. The solid copper central conductor 1 has extruded thereover a solid body 2 of a polymer of ethylene over which is applied the inner hollow cylindrical conductor 3 formed from a thin copper tape with butt edges and integral projections as in Specification 476,098, the projections underlying the edges. This tube 3 has extruded thereover a solid body of a polymer of ethylene over which is applied the outer conductor 6, formed from a copper tape or tapes with long lay, a binding 7 of bituminous tape, armouring 8 and an external serving 9 of bituminous tape. The solid central conductor 1 may be replaced by, say, four separately insulated conductors stranded together to form a power or signalling circuit, Fig. 2 (not shown). In an air-space cable, Fig. 3, the inner hollow cylindrical conductor member 3 is carried on spacing washers 14 slotted to fit over the central solid conductor 1. The inner hollow cylindrical conductor member is formed by several copper tapes with long lay, held together by a thin covering 15 of insulation such as a polymer of ethylene which carries similar slotted washers 16 enclosed within an extruded insulating tube 17 over which is formed the outer conductor 6 from copper tapes with a long lay. Windings of steel tape 18 (to form a magnetic shield) and a lead sheath 19 complete the cable. The Provisional Specification states also that the spacing washers may be in halves, cemented or keyed together, the inner conductor may be a multi-telephone cable and the outer conductor may be formed by metallizing the surface of a tube of insulating material, and it refers also to Specifications 458,772, 459,518 and 478,768.
Patent GB-121093-A (GB)
Title: A New or Improved Protecting Tip for Boots or Shoes.
Inventor: WATSON ALGERNON CHARLES
IPC: A43C13/02
Filed: 1918-07-18
Abstract: 121,093. Watson, A. C. July 18, 1918. Sole edges, protectors for. - A protecting-tip for the toe of a shoe is made from a plate a of sheet metal which is formed with an upstanding flange c corrugated to represent clinker nails.
Patent GB-162280-A (GB)
Title: Improvements relating to alighting gear for lighter than air aircraft
IPC: B64F1/14
Filed: 1921-04-25
Abstract: 162,280. Luftschiffbau Zeppelin Ges., and Jaray, P. April 23, 1920, [Convention date]. Shock-absorbers, applications of; land wheels.-For use when starting or alighting, and to facilitate the handling of airships on the ground, wheeled frames b, having elastic nets c, are detachably and elastically secured to the gondolas d of the airship. The frame b has two pairs of swivelling wheels a, and an elastic net c for engaging the undersurface of the car or car-buffer. The frame is secured to the car by elastic connections e which may be connected and detached by means of toggle levers. The frames b may be made heavy or provided with removable weights to neutralize the lift of the airship. According to the Specification as open to inspection under Sect. 91 (3) (a), a common alighting- gear may be used for several cars. This subjectmatter does not appear in the Specification as accepted.
Patent GB-816771-A (GB)
Title: Calutrons
IPC: B01D59/44
Filed: 1945-05-10
Abstract: 816,771. Mass separators. UNITED KING- DOM ATOMIC ENERGY AUTHORITY. May 10, 1945 [May 19, 1944], No. 11800/45. Class 39(1). A multiple-beam calutron mass separator has a number of ion sources and an equal number of receivers. The beams may be in the same or parallel planes, and may intersect, Fig. 12. Ion sources and receivers may be disposed back to back, Fig. 2, and may be mounted on removable panels of the tank. A multiple ion source unit, Fig. 17 has three arc chambers 2408, 2409 and 2410 supplied with vapour from a common charge receptacle 2401. Apertured quartz baffles 2463, 2464 and 2465 are provided in the arc chambers. Electron emitting filaments associated with the arc chambers are energized in parallel. Specification 816,772 is referred to.
Patent GB-651148-A (GB)
Title: Improvements in or relating to a.c. tumbler switches
IPC: H01H23/04
Filed: 1948-04-29
Abstract: 651,148. Tumbler switches. CLANG, Ltd., and AUSTEN, H. E. April 29, 1948, No. 11813. [Class 38(v)] The movable contact blades 11, 12 of a two-way switch are mounted in a recess formed in the underside of the base 1 and are actuated through an opening in the base by a lever 9 pivoted on the base at 10. The lever 9 is connected at 8 to the operating dolly 7 which is pivoted at 6 to brackets 2 on the front of the base, the arrangement including a telescopic compression-spring member or equivalent device. The lever 9 may also be yieldingly held in the central position wherein a projection thereon operates a third contact blade. The base recess is closed by a plate apertured to receive the leads, and the usual slotted front cover is provided.
Patent GB-142490-A (GB)
Title: Box cover shell making machines
IPC: B31B3/34
Filed: 1920-04-29
Abstract: 142,490. Ritchie & Co., W. C., (Assignees of Milmoc, M. J ). April 10, 1915, [Convention date]. Sheet-separators; pile supports.-In a machine for making the shells of drawer-and-shell boxes, a pile of scored pasteboard blanks rests on bars 102, 104, Fig. 6, and are fed forwards singly by a pair of rack-operated slides 118 running on rollers 122 arranged below the magazine. The slides 118 have shoulders 119 that engage the lowest blank and push it forwards past verticallyadjustable parts 95, 108 arranged to hold back the stack of blanks. The walls of the magazine are adjustable to suit blanks of different sizes. A sheet of covering paper is fed to the machine by a slide 261, Fig. 11, which has a paper-guiding extension 267, and is provided with a spring pressing-device 270 and with a number of spring- pressed dogs 271 arranged to engage the paper. The slide 261 first moves a slight distance to the left, carrying the paper with it, and then retracts, the paper being retained in position by contact with the box-shell. The slide then moves forwards again and causes a loop to be formed in the paper. A blast of air from a nozzle 283 prevents the forward free end of the paper from being fanned upwards by the folding-mechanism.
Patent GB-379299-A (GB)
Title: Improvements in and relating to electrolytic cells
IPC: H01G9/00
Filed: 1931-04-22
Abstract: 379,299. Electrolytic condensers. AEROVOX WIRELESS CORPORATION, 70, Washington Street, Brooklyn, New York, U.S.A.-(Assignees of Georgiev, A. ; 70, Washington Street, Brooklyn, New York, U.S.A.) April 22, 1931, No. 11916. Convention date, Oct. 18, 1930. [Class 37.] The cell element for an electrolytic cell such as a condenser rectifier or lightning arrester comprises cathode and anode foils and a thin dielectric film adhering to the entire area of the anode and maintained by electrolyte in an absorbent interlay between the anode and cathode, the anode and cathode foils being displaced transversely, the cell being placed in a container with the provision of air spaces therein.to facilitate cooling and escape of gases from the cell element. Each condenser unit is formed of two strips of aluminium foil 10, 11 offset both lengthwise and laterally, and an interposed absorbent layer 12 of gauze folded over the end of the anode foil to provide an additional sheet 13. Terminal tabs t<1>, t<2> are provided by slitting each foil transversely near one end to provide a tongue 15 which is reversely bent as at 16. The superposed layers are rolled up, one or two complete turns extra being provided by the cathode foil for screening and heat dissipation purposes, and the condenser roll is impregnated with hot electrolyte after which it is " formed " by passing direct current through it. Pairs of condensers are laid in trays filled with electrolyte cooler than that in the impregnation tank and current is passed through them in series with a resistance and indicating lamp, the total forming voltage being higher than that during use. By this means the potential across the condenser adjusts itself in accordance with the current flow, being low at first and high towards the end of the forming operation. Series jacks are provided for metering the current flow. The condenser or condensers are then arranged in a can C, of the same metal as the electrodes, with an interposed wrapping W of paper or fibre so as to leave substantial air spaces therebetween, the anode slit tabs t<2>, at the top, being taken to terminal studs 33 in a cover 34 of insulating material and the cathode tabs t<1> being passed along the bottom of the can, up the side, and riveted to the can at 43, an inner cover 42, Fig. 10, and an outer connection tab 31 being also provided over this part of the can which is also bored and provided with a perforated rubber gas vent 41. The top of the can is bent over the cap 34 and sealed over a gasket 38 and all joints, screws, washers, rivets, &c. on the can are subjected to the " forming " operation.
Patent GB-548523-A (GB)
Title: Improvements in belt conveyor driving means
IPC: B65G23/12
Filed: 1941-09-17
Abstract: 548,523. Conveyers. NYBORG, T. G., and MINING ENGINEERING CO., Ltd. Sept. 17, 1941, No. 11938. [Class 78 (i)] In endless belt driving means of the mangle type, in which the belt is gripped between rollers, the spring loading means for an idle roller are external of side frame plates between which the belt passes. The belt 10 is gripped between the driving roller 2 and the idle roller 3 which is mounted on the ends of levers 5, 7 pivoted to the side frames 1 at 6 Springs 8 force roller 3 towards the driving roller 2. The bearings 51 for the roller 3 project from the ends of arms 5 through curved slots 52 in frames 1. The bearings 51 and the point of application of the springs 8 are offset oppositely thus avoiding bending loads on lever bearings 6. Specifications 438,754 and 459,987 are referred to.
Patent GB-893496-A (GB)
Title: Improvements in or relating to liquid-flushed cleaning devices
Inventor: SADLER LESLIE REGINALD
IPC: A46B11/06
Filed: 1959-04-09
Abstract: 893,496. Hand-tool handles; mops; brushes. BETTERWEAR PRODUCTS Ltd. March 22, 1960 [April 9, 1959], No. 11994/59. Classes 19 and 61. [Also in Group XXVIII] A tubular handle 2, Fig. 2, is formed at one end with a spigot 7 which is inserted in a socket 11 formed in the stock 9 of a liquid flushed brush. The spigot and/or the socket is tapered. The other end of the handle receives a spigot 5 provided with saw teeth 6 for connection to a hose. In Fig. 5, the handle is inserted in a socket 15 secured to a sponge 14. The handle is provided with longitudinal ribs 4 and is made of flexible synthetic resin such as polyethylene or polypropylene.