baber/WOPTO huggingface dataset:
Patent GB-697702-A (GB)
Title: Sewing machine
IPC: D05B27/02
Filed: 1951-09-08
Abstract: 697,702. Sewing-machines. FAIRWEATHER W. C. (Singer Manufacturing Co.). Sept. 8, 1951, No. 21234/51. Class 112. [Also in Group XXXII] The invention relates to the design for easy assembly of the frame and mechanism of a machine having a main crank-shaft and an oscillating shaft actuated therefrom by a link. In the machine shown, the crank-shaft is formed in two sections 53, 54, the section 53 carrying one crank-web 64 and the other section carrying the other crank-web 66 with the crank-pin 65 secured therein by brazing or otherwise; the pin 65 engages a notch in the web 64 so that the two shaft-sections rotate together. The web 66 is formed with a balance weight. The shaft-section 54 is carried by two ball-bearings 67 mounted in a sleeve 69 secured, by a screw 72, in an opening in the frame which is big enough to allow the passage of the shaft-section 53 with the crank-web 64; the sleeve projects from the frame so that the pull of the driving belt on the pulley 71 is in line with the outer bearing. The rock-shaft 33, with a crank-arm 84 fixed to it, is inserted through an opening 36 in the frame into its bearings in a partition 32 and a web 34, and a needle-operating crank-arm 80 is clamped on it; the arm 84 has a pin which receives the upper end of the link 85 connecting the upper and lower shafts, and the link is kept in position on the pin by engagement with a bearing face on the partition 32. The form of the crankarms 80, 84 is such that the forces on the crankpins are in line with the bearings of the shaft 33. In assembly, the shaft-section 53 is first placed in position, and then the link 85, followed by the shaft-section 54 with its bearing sleeve 69 and the rock-shaft 33 with its crankarm 84; the rock-shaft is secured by a nut on its left-hand end. The face of the machine head is closed by a cover 35 and the aperture 36 by a cover 37. The left-hand part 39 of the workplate is mounted on a pivot 43 so that it can be swung clear for access to the looper and feed mechanism; it carries a looper-guard 45. The machine stands in a drip-pan 50, and is supported by resilient cushions 46 passing over tubular buttons which are brazed or otherwise fixed to the drip-pan and through which fixing screws pass. The machine is lubricated as described in Specification 697,720. Governing needle - thread.-In conjunction with a thread pull-off as described in Specification 687,553, a thread-nipper 147 is provided. This comprises a pair of discs 166, between which the thread passes, loosely mounted on a headed plunger 168 slidable in an adjustable bush 169 under the action of a spring in the bush and a cam formed by the periphery of the crank-web 64 and engaged by a spring-pressed plunger-operating rod 171. The cam opens the nipper at the required period during the stitchforming cycle.
Patent GB-1141493-A (GB)
Title: Improvements in aircraft
Inventor: DENNING RALPH MURCH
IPC: F02C7/042
Filed: 1965-05-19
Abstract: 1,141,493. Aircraft. ROLLS-ROYCE Ltd. 18 May, 1966 [19 May, 1965], No. 21297/65. Addition to 1,050,924. Heading B7G. [Also in Division F1] In an aircraft having a jet propulsion engine accommodated in a housing which projects below the underneath surface of the aircraft as described in the parent Specification, the under surface of the housing instead of being completely planar is formed of a planar rear half 2 and a forwardly and generally upwardly curving front half 6. The mean angle of incidence of the under surface is preferably 2 degrees greater than that of the aircraft's primary lifting surfaces. The curved front surface has two downwardly convex parts separated by a concave part, the rear convex part blending smoothly with the rear half 2 and the front convex part terminating in an intake lip 8 inclined upwards at an angle of about 15 degrees relative to the rear half 2.
Patent GB-214107-A (GB)
Abstract: 214,107. Santis, L. de. May 23, 1923. Combined-flow type; axial-flow type; circular-flow type.-Turbine units mounted on a common shaft 19 in separate casings 13, 14, Fig. 2, comprise high-pressure circular-flow motors 23 and lowpressure axial-flow motors 43. Motive fluid is supplied to an annular chamber 29 in the end wall of one. unit, the other unit being used for reversing. A nozzle 33, Fig. 1, supplies fluid to blades 27 of the rotor 23, the fluid being guided again and again on to the blades by passages 35, 36 and finally to the exhaust chambers 42 whence it passes through nozzles 47, Fig. 2, to the rotors 43, 44 between which is a guideblade member 46. Additional manually-controlled nozzles 37 for the rotor 23 are circumferentially spaced around the blades 27, while manually-controlled passages 52, 53, 54 supply high-pressure fluid to the rotors 43, 44. Regulating; reversing.-Motive fluid passing through a stop-cock 63 is led through a hand or governor-controlled valve 61 to either of the supply pipes 66, 67. Slide-valves 70, 71, Figs. 2 and 3, operated through a rod 76 alternatively open the ports 64, 65, one of which is always entirely covered. The valves 70, 71 are telescopically connected to overhead slides 81, springs 82 entering a steam-tight joint. The nozzles 37 and the passage 53 are controlled by screw-down valves 41, 57.
Patent GB-786065-A (GB)
Title: Chromonyl-3-(4-hydroxycoumarinyl-3)-acetic acid derivatives and compositions containing them
IPC: C07D311/48
Filed: 1954-07-22
Abstract: The invention comprises the ethyl ester of chromonyl - 3 - (41 - hydroxycoumarinyl - 31)-acetic acid, its water-soluble alkali metal and ammonium salts, and a method for the preparation of esters of chromonyl-3-(41-hydroxycoumarinyl-31)-acetic acid (and also the sodium salt thereof) by cyclizing the appropriate ester of a  - (4 - hydroxycoumarinyl - 3) - b  - salicyloylpropionic acid with an alkyl formate and metallic sodium followed by acidification, if desired, of the sodium salt obtained.  In an example: a  - (41 - hydroxycoumarinyl - 31) - b  - salicyloyl-propionic acid ethyl ester in cooled ethyl formate is treated with powdered sodium and the resulting sodium salt dissolved in water and acidified yielding ethyl chromonyl-3-(41-hydroxycoumarinyl-31)-acetate.  Other esters mentioned are methyl, propyl, isopropyl, n-butyl, isobutyl and benzyl.ALSO:Raticidal compositions comprise an ester of chromonyl - 3 - (41 - hydroxycoumarinyl - 31) - acetic acid or a water-soluble alkali metal or ammonium salt thereof together with an edilbe bait. Specified esters are methyl, ethyl, propyl, isopropyl, n-butyl, isobutyl and benzyl.
Patent GB-990089-A (GB)
Title: Trioxane copolymers and a process for their manufacture
IPC: C08G2/24
Filed: 1962-06-04
Abstract: Trioxane is copolymerized with tetramethylene diol formed at - 100 DEG  C. to 150 DEG  C. in the presence of 0.0001 to 1 mol. per cent of a cationically active catalyst.  The catalyst may be a Lewis acid, or an etherate, an amine complex or an oxonium salt thereof or an aryl diazonium fluoroborate.  Lists of specific catalysts are given. The formal may be dissolved in molten trioxane and polymerized.
Patent GB-1085491-A (GB)
Title: Electrical hybrid circuit members
IPC: H05K3/06
Filed: 1965-05-20
Abstract: 1,085,491. Circuit assemblies. SOCIETE D'ELECTRONIQUE ET D'AUTOMATISME. May 20, 1965 [June 26, 1964], No. 21486/65. Heading H1R. In a " hybrid " circuit assembly containing both thin film and conventional components, a dielectric carrier plate has on one side film resistors of relatively high resistivity, and on the other side film resistors of relatively low resistivity, and printed conductors on at least one side and on the walls of holes extending through the carrier plate. The invention is described with reference to a three-stage amplifier comprising, in addition to the film resistors and conductors, three transistors, three diodes, and three capacitors. A dielectric carrier plate having holes formed therein where required is coated on one face and inside the holes with a relatively low resistivity film of stannic oxide doped with aluminium obtained by the pyrolysis of an acid solution of chlorides of tin and aluminium sprayed on to a heated carrier plate. A similar coating, but incorporating an oxidizing agent such as zinc oxide to increase its resistivity, is applied to the other side of the carrier plate and the inside of the holes. The pattern of resistances and conductors desired is then formed in the resistive films by silk screen engraving or photo-etching. The areas which are to form resistors are protected by a plating resist, and the rest of the resistive areas, including if desired the hole walls, are electroplated with a tin-nickel alloy to form conductive paths. The resistors on each side of the carrier plate may comprise the same material, their different values being determined by their thicknesses; and the resistive and conductive pattern may be formed by spraying through a mask.
Patent GB-1142032-A (GB)
Title: Improvements in electrical pinboard assemblies
Inventor: COLLIER JOHN COVELL
IPC: G06F9/00
Filed: 1966-05-14
Abstract: 1,142,032. Two-part couplings; plugboards. AMP Inc. 1 May, 1967 [14 May, 1966; 29 Nov., 1966], Nos. 21533/66 and 53371/66. Heading H2E. External circuits are connected to the contact strips of a cross-bar distributer 1-4 by contact pins 16, 18 which are crimped to the circuit leads and which are latched by detents in a panel recess 14 which receives the distributer, further contact pins (not shown) being inserted in selected apertures 2 at the front of the distributer 1-4 to interconnect selected circuits. Projections 10, 11 on the distributer casing engage locating slots 19, 20 in the panel 12, the distributer being inserted in the panel recess 14 by a handle 3. The distributer contact strips (not shown) are arranged in crossed parallel arrays in the insulating casing 1-4 and have, at their cross-over points, socket contacts which are aligned with the apertures 2 and with further apertures (5, 6, Fig. 3, not shown) which receive the contact pins 16, 18. One layer of distributer contact strips has sockets aligned with a column of apertures (6) in a recess in the casing part 4, the apertures (6) receiving contact pins 18 which are mounted in an insulating block secured to the panel 12. Indicator lamps which are located in panel apertures 22, or alternatively in the distributer casing 1-4, are connected to selected contact pins 16, 18.
Patent GB-1049904-A (GB)
Title: Improvements in or relating to collapsible shelters
Inventor: NEUMARK OTTO WALTER
IPC: E04H15/18
Filed: 1964-05-26
Abstract: 1,049,904. Suspended tents. FRANKENSTEIN GROUP Ltd. May 25, 1965 [May 26, 1964]; No. 21621/64. Heading E1A. A tent roof comprises radially outward directed ridge sections supported on wire cables 23 which are in turn carried by posts 20 and which are all, connected to a plate 24 at the centre of the tent. The cables 23 are shackled at their outer ends to cables 28 which pass over either a single pulley or a set. of grooved rollers at the top of the post, and are anchored to the ground.. The roof is formed in three sections laced together at their edges, with edge flaps connected together by touch-fastener strips or slide-fasteners. The posts 20 are each constructed from two truncated metal cones with a central bolted flange connection (Fig. 5, not shown). The tent side walls 36 are laced to, the underside of the roof, and, can be pulled over wires 31 connecting the heads, of the post 20 by means of cords 45 (Fig. 6, not shown), each being fixed to the top ring of sets of vertically. aligned rings 44. attached at intervals along the length of each side wall 36, and passing down through the rings and up over the wire 31. The roof edges are tensioned by cables 33 and 34 passing through sleeves on said edges and anchored at each end and the side, 36, and end walls 38 are fixed at their lower edges by tension webbings 40 (Fig. 7, not shown) passing through sleeves 39 and attached to ground anchors 41.
Patent GB-1504953-A (GB)
Title: Process for the continuous hardening of tubes
IPC: C21D9/08
Filed: 1975-05-20
Abstract: 1504953 Heat-treatment of tubes MANNESMANN AG 20 May 1975 [5 July 1974] 21621/75 Heading C7N Tubes, such as horizontally disposed thickwalled steel tubes, are continuously hardened by arranging them end-to-end, and advancing them helically while being heated externally by heating gas, flames, radiation or inductive currents, and simultaneously heating internally by radiation or electro-inductively, and subsequently cooling both externally and internally by a cooling medium, the speed of advance of the tubes being from time to time temporarily increased to divide the continuous line of tubes into individual tubes, suitable apparatus comprises a roller table to transport the tubes, an external heat source 3, an external cooling spray ring 4, an internal electrical heat source 5 and an internal spraying head 6, both 5 and 6 being carried on a rod 4a which is clamped by at least one pair of clamps 7, or 7', through which electricity is supplied, and which are spaced by more than one or two tube lengths, so that with clamp 7 open as shown, one or two tubes can proceed towards 7', then clamp 7 is closed to hold tube 49, whilst 7' is opened and the tubes proceed further.
Patent GB-532875-A (GB)
Title: Improvements in intaglio printing machines
IPC: B41F9/06
Filed: 1939-07-25
Abstract: 532,875. Rotary intaglio machines. QUICK, C. G., BENNISON, W. E., and PHYTHIAN, T. E. July 25, 1939, Nos. 21622 and 31356. [Class 100 (ii)] Inking apparatus; printing - cylinders. In a rotary intaglio machine in which the printing cylinder extends into an ink housing the spaces between the ends of the cylinder and the end walls of the housing are closed by sealing members which abut against tne enas of the cylinder and allow of axial adjustment of the cylinder while maintaining the seal. Improved means are also provided for sealing the spaces between the cylinder and the side walls of the housing. As shown, an end sealing block 6, Figs. 1 and 3, slidably engaging a hood 8 fixed to the end wall 5 of the housing 2 is pressed against the end of the cylinder 1 by springs 9 which permit of axial movement of the cylinder. The block 6 is provided with an extension 10 of the same radius as the cylinder to form a bearing surface for the doctor blade 3 which is reciprocated longitudinally by any suitable mechanism. The blade 3 is clamped in a holder 12 carried by a plate 13 fixed to a pivot shaft 14 and the ends of the holder 12 and plate 13 extend into and in sealing engagement with a hood member 15, having inwardly directed flanged portions engaging the extension 10 and an end wall in sealing contact with a flange 18 on the end of the hood 8. The hoods 15 at the opposite ends of the cylinder are connected by a bar 16 partly embracing the shaft 14 and having a curved exterior surface engaged by a spring pressed sealing strip 19. The housing is sealed on the side opposite the doctor blade by a plate 22 adjustably secured to a plate mounted on end portions 24 of the hoods 8. To provide for a continuous bearing surface for the doctor blade when the printing cylinder is of the form having radiused ends R, Fig. 7, and tapered parts T, adaptor rings 27 shaped internally to fit the parts R, T and of cylindrical form externally are placed on the ends of the cylinder. The crevice at the inner edge of the ring 27 may be filled by a suitable composition F. Specifications 481,188 and 505,390 are referred to in the first Provisional Specification.
Patent GB-933327-A (GB)
Title: An improved cattle grid
IPC: A01K3/00
Filed: 1961-06-15
Abstract: 933,327. Cattle grids. I. J. SUTHERLAND, and I. J. FLEMING. Sept. 29, 1961 [June 15, 1961], No. 21679/61. Class 104 (2). A cattle grid comprises an outer frame 10 from which an inner frame 12, carrying a grid 13 of wire mesh or expanded metal, is supported by springs 16 through hooks 15 and brackets 11. Two floor carrying sections 17, 18 hinged to the side of the outer frame 10 are lowered when cattle are to be driven across the inner frame 12. The inner frame 12 or wire mesh 13 may be electrified in which case the hooks 15 are electrically insulated or, alternatively, the frame 12 is supported by rubber bonded to the inner and outer frames 12, 10.
Patent GB-385558-A (GB)
Title: An improved form for the handles of weed-extractors
IPC: A01B1/16
Filed: 1932-08-03
Abstract: 385,558. Hand tools for destroying weeds. CUNYNGHAME, SIR H. H. S., 24, Upperton Road, Eastbourne, Sussex. Aug. 3, 1932, No. 21724. [Class 6 (iil.], A weed extractor &c. has a branch handle a, c attached at about 60‹ or a right-angle to the end of the main handle a, b to enable the device to be manipulated without stooping ; a third leg b, c may be added forming a triangle and a foot step may be provided at b. The legs may be formed of wood or metal jointed together or of one piece bent to triangular form with the extractor fixed to one angle.
Patent GB-650634-A (GB)
Title: Improved method of erecting houses or other structures from prefabricated elements
IPC: E04B2/42
Filed: 1948-08-17
Abstract: 650,634. Building slabs. SEMERARO. A. Aug. 17, 1948, No. 21740. Convention date, June 11. [Class 87(i)] A storey-high building slab formed with vertical holes b and part-circular edge grooves 1 has slots c, e in a side face and the bottom of a groove 1 respectively communicating with holes b to assist the connection of slabs at right angles and edge to edge. The slabs are also used for roofs, jointing mortar entering the ends of the holes b. One side of the groove 1 may be partly cut away.
Patent GB-689292-A (GB)
Title: Magnetic ferrite of high maximum permeability and high curie point
IPC: C04B35/42
Filed: 1951-09-17
Abstract: 689,292. Magnetic compositions. STEATITE RESEARCH CORPORATION. Sept. 17, 1951 [Oct. 7. 1950], No. 21809/51. Class 38 (ii). A magnetic ferrite composition has the formula x(NiO,ZnO,CuO) y Fe 2 O 3  in which x : y is between 0.98 : 1.02 and 0.95 : 1.05 and the CuO forms 1.25 to 7 per cent by weight. Copper oxide, carbonate, or basic carbonate is mixed with the right proportions of the other powdered oxides, milled, in water, dried, powdered, mixed with a little binder such as flour, gum or wax emulsion, pressed, fired at about 2400‹ F. for several hours in air and cooled. The initial permeability is between 650 and 1200, maximum permeability exceeds 4000, saturation flux density is about 4000 gauss, coercivity is less than 0.25 oersted, brine point is between 120‹ and 190‹ C., residual magnetism is not more than 2000 gauss, and the hysteresis and other losses measured by the coefficient a of the Legg equation and below 15 Î 10<SP>-6</SP>. pressing, the powdered oxides may be separated into several grain sizes, the parts being mixed in selected proportions. Specification 677,418 is referred to.
Patent GB-597987-A (GB)
Title: Improvements in blowpipe nozzles
IPC: F23D14/54
Filed: 1945-08-25
Abstract: 597,987. Blow-pipe burners. LINDE AIR PRODUCTS CO. Aug. 25, 1945, No. 21857. Convention date, Nov. 1, 1944. Addition to 585,952. [Class 75 (i)] The blow-pipe nozzle of the parent Specification is modified by providing a single fuel gas chamber 30 on either side of the central oxygen passage 0, fuel gas being discharged through a narrow elongated slot 32 parallel to the longer axis of the oblong oxygen discharge orifice 16. The front end of the body B and the cap C are provided with slots 20, 24 wider than the orifice 1.6 so that a step 22 is formed to divert a portion of the oxygen stream as a current fringe to mix with the acetylene. The cap C is supported on the front face of the body B by portions 36 of the body, and may be removably secured by a fillet weld 38 which can be melted to remove the cap, the slot 24 of which is bevelled at 29 so that a cleaning tool may be inserted in the slots 32. The chambers 30 are formed by milling recesses into the front wall of the body, the bottom of each recess sloping at an angle of about 30 degrees towards the rear, and the broached-out side walls 17 of the oxygen passage are preferably inclined at an angle of about 15 degrees.
Patent GB-614731-A (GB)
Title: Improvements in or relating to screw propellers
IPC: B63H3/04
Filed: 1946-07-23
Abstract: 614,731. Reversible propellers. BOWLER, H. P. July 23, 1946, No. 21899. [Class 114] A reversible marine propeller has its blades 1 . secured to a common shaft 2. This shaft can be rotated through 90 degrees by the rod 6 so as to move the blades from the ahead to the astern position.
Patent GB-1399156-A (GB)
Title: Wiper balde cleaning apparatus for a xerographic surface
IPC: G03G21/00
Filed: 1972-05-11
Abstract: 1399156 Cleaning xerographic surfaces XEROX CORP 11 May 1972 [13 May 1971 (2) ] 22056/72 Heading G2H Residual powder toner is removed from a moving xerographic surface 12, which is preferably a drum but may be a plate or belt, by a longitudinally reciprocated scraper 50. Preferably the scraper is flexible, and is softer than the surface 12, being composed of, e.g. polyurethane. An auger 60 and a bead chain conveyer 66 return the removed toner to sump 29, where it is mixed with unused developer and fresh toner from supply bottle 31 before being applied again by cascading from bucket conveyer 30. When the moving xerographic surface is stopped the scraper may be made to continue its reciprocation for a limited period, so as to complete removal of toner. For Figure see next page
Patent GB-1546277-A (GB)
Title: Protection of underground conduits
IPC: H02G9/02
Filed: 1977-05-25
Abstract: To simplify installation and transportation, the low-cost profile which can be wound has weakness lines running in a longitudinal direction around which it can be simply and securely folded at the installation site to form a cable protection channel. Three weakness lines (2, 3, 4) divide the profile into four strips. The two outer longitudinal strips form a projection (11) pointing away from the channel and are interconnected by fixing means (12). <IMAGE>
Patent GB-531725-A (GB)
Title: Improvements in or relating to loose-leaf binders
IPC: F27B1/16
Filed: 1939-07-31
Abstract: 531,725. Loose-leaf binders. BLOORE, E. J. July 31, 1939, No. 22167. [Class 146 (i)] In a binder in which the two sets of prongs 4, 4<SP>1</SP> are mounted on hinged back-sections 1, 2, one set being mounted on a plate 5 slidable on one back-section for leaf-shifting purposes, the slidable plate is positioned by means of a stepped stop 9 mounted thereon and co-operating with a finger-operated stop-lever 13 pivoted on the back-section, the lever being also laterally movable against spring pressure. The lever is turned into position to engage the desired step of the stop, and is held in adjusted position by lateral movement into engagement with one or other of notches 12' formed in a flange on the stepped stop. The lever is itself notched, so that it co-operates with the bottom of the notch in the stepped stop and thereby positively locks the stop and the slidable plate in position.
Patent GB-380903-A (GB)
Title: Improvements in heat-insulated containers for storing perishable commodities
IPC: A47J41/02
Filed: 1931-08-05
Abstract: 380,903. Vacuum jacketed vessels. LUNT, W. R. F., 339, Smith Street, Durban, Natal, South Africa. Aug. 5, 1931, No. 22179. [Class 29.] A vacuum-jacketed storage vessel comprises inner and outer cylinders of sheetmetal, preferably Staybrite steel or Monel metal, having an opening formed by a metal sleeve 6 and adapted to be closed by a stopper 11, the ends of the cylinders being oppositely dished and the inner cylinder supported by a cork segment 5. The space between the cylinders is evacuated through a valve 13 which is afterwards sealed by soldering &c., and the surfaces of the cylinders enclosing the space are either highly polished or plated. The substance to be stored in the vessel is either cooled before being placed in the vessel or, alternatively, the inner cylinder is initially cooled by means of ice &c. The stopper is either evacuated or packed with heat-insulating material, and the joints between the cylinders and the sleeve are made by welding, brazing, riveting or soldering.