baber/WOPTO huggingface dataset:
Patent GB-863480-A (GB)
Title: Improvements in or relating to metal working machines
Inventor: REDMAN ALBERT MAURICE
IPC: B21D7/028
Filed: 1956-09-25
Abstract: 863,480. Bending. WILMOT-BREEDEN Ltd. Dec. 24, 1957 [Sept. 25, 1956; Sept. 20, 1957], Nos. 29304/56 and 29677/57. Class 83 (4). A machine for bending or shaping metal workpieces comprises a former having a working profile corresponding to the full length of the shaped workpiece, means for clamping the workpiece to the former, comprising two clamping units positioned respectively on opposite sides of the middle of the former profile, a forming or press member for engaging the workpiece over a small area thereof, means for urging the forming member into engagement with the workpiece and means for relatively moving the forming member along the length of the workpiece, one clamping unit being operative to clamp the former to the workpiece whilst the other clamping unit is inoperative, whereby the workpiece is bent or shaped in two successive halves. Two formers 16 spaced one above the other are mounted on a table 15 rotated by hydraulic means 21 comprising one, two or three piston and cylinder units. A cross-head 28, on which is pivoted a head 31 carrying two profiled rollers 33 for pressing the workpiece against the former 16, is urged towards the former by an hydraulic piston and cylinder unit 26 and the orientation of the head 31 is altered by an hydraulic piston-and-cylinder unit 36, pivoted on an extension 42 of the head 28, rocking the head 31 about its pivot. In operation, two partially-formed car bumper blanks 10 of U cross-section are presented to the formers 16, positioned as in Fig. 5, by a head 64 pivoted on a reciprocated block 56, as described in Specification 863,482, to which reference is made. A T-headed clamp 44 nearest the roller head 31 is then actuated by hydraulic means 43 to hold the two blanks to the formers. The formers 16 then rotate first quickly then slowly and the roller head 31 moves towards the formers, first quickly then slowly, to engage the blanks slightly to one side of their centres. The angular control unit 36 is then unlocked and the formers rotated quickly until the first halves of the blanks are bent, Fig. 10. The speed of rotation of the formers 16 is controlled, through a valve arrangement, by the pressure exerted by the roller head. The formers 16 are then stopped, the head 31 withdrawn, the other clamp 44 actuated to hold the blanks and the first clamp 44 released. The head 31 is returned and the formers 16 rotated in the opposite direction to bend the other halves of the blanks. After corner blocks 18 in the formers 16 have been retracted, the finished blanks are removed by jaws on another head pivoted on the block 56. The bending pressure is reduced for the ends of the blanks. Specification 665,560 is referred to in the first Provisional Specification. According to the second Provisional Specification, workpieces may be bent to circular form on circular formers having only one clamp, the roller head being replaced by a shoe. Specification 863,481 also is referred to.
Patent GB-271401-A (GB)
Title: Improvements in and relating to thermionic valves and methods of manufacturing the same
IPC: H01J9/04
Filed: 1926-11-22
Abstract: 271,401. Just, A. May 21, 1926, [Convention date]. Vacuum tubes.-Electron-emitting cathodes for thermionic valves comprise a metal or alloy melting above 1000‹ C. and containing or coated with one or more sulphides of zinc or the alkaline earth metals, calcium, barium and strontium, or rare earth metals such as cerium, erbium, yttrium lanthanum, thorium, zirconium, neodymium and praseodymium. The metal melting above 1000‹ C. may be copper or platinum or molybdenum or their alloys such as platinum-iridium or platinumnickel. Phosphorescent sulphides may be used or formed, such sulphides containing traces of sulphides of heavy metals such as copper, cadmium, bismuth, thallium, uranium, tin, manganese, silver and lead. A sulphide coating may be applied to a metal wire and fixed by heating to incandescence. Known oxide cathodes may be heated in sulphur vapour or sulphuretted hydrogen, or a calcium coating containing traces of copper or bismuth on a platinum or platinumiridium core may be converted into sulphide by heating similarly. In modifications, the cathode consists of a homogeneous mixture of metal and sulphide, for instance, a mixture of molybdenum and calcium containing 2-5 per cent of sulphide. Platinum black, or finely powdered amorphous molybdenum obtained by the reduction of molybdenum trioxide with hydrogen, may be mixed with ordinary or phosphorescent calcium sulphide or sulphides of rare earth metals and the mixture pressed into a bar, sintered, hammered and drawn into a wire. Alternatively, powdered platinum or other precious metal may be mixed with calcium powder or oxide or with other alkaline earth or rare earth metals or mixtures or oxides thereof, with or without a small quantity of heavy metal such as copper or a compound thereof, and, after forming into wire, the wire is heated by current or otherwise in an atmosphere of sulphur vapour or sulphuretted hydrogen together with free hydrogen to form sulphides of all the metals except the precious metal. Molten metal such as platinum or platinum nickel may be used instead of powdered metals, the sulphides or metals, with or without a trace of heavy metal, being added to the molten metal.
Patent GB-1528449-A (GB)
Title: Coffins
IPC: A61G17/00
Filed: 1975-10-03
Abstract: 1528449 Method of making coffins C HEWKIN 3 Oct 1975 [4 July 1974] 29600/74 Heading A5X A coffin is constructed by assembling a peripheral frame from moulded end and side components of constant cross section, severing the assembly below the top edge to remove the hatched portion 8 and inverting the flange thus formed so that the cut upper edge of the remainder of the assembly engages in the rebate 4. The coffin is completed by top and base panels. During severing a temporary stiffening panel is located on shoulders 7 of the side components. The components may be moulded from plastics or melamine covered chip board.
Patent GB-661027-A (GB)
Title: Improvements connected with conveyor belts
IPC: B65G17/02
Filed: 1949-12-15
Abstract: 661,027. Endless-belt conveyers; unloading vehicles. WALTERS, K. M. Dec. 15, 1949 No. 29694/48. Classes 78 (i) and 78 (iv). A conveyer comprises parallel sprocket chains 8 connected together by slats 7 supported on lugs 5, 6 secured to the chains, and an endless belt 10 secured to the slats by rivets 9 and troughed by guides 11. The conveyer may be mounted below the body of a vehicle for discharging material therefrom, the bottom of the body being shaped to form the troughing guides.
Patent GB-924185-A (GB)
Title: Continuously variable speed
IPC: F16H47/04
Filed: 1960-08-29
Abstract: 924,185. Hydro-mechanical variable-speed gear. FORD MOTOR CO. Ltd. Aug. 29, 1960 [Aug. 29, 1959], No. 29749/60. Class 80 (2). In a combined hydrostatic transmission and planet gear for motor vehicles, planets 40 on an input carrier 36 mesh an output ring 22 and a sun 23 which latter acts as a reaction member or drives an adjustable swash-plate pump 24 in closed circuit with an adjustable swash-plate motor 26 which is drivingly connectible to output through a friction or positive dog clutch 28. In the arrangement shown, which is suitable for front wheel drive or rear engine arrangements, the ring 22 is mounted on a hollow shaft 29 carrying a bevel pinion 30 meshing an output differential crown wheel 31. An input driven gear type pump 33 supplying transmission and control oil is arranged behind or, as shown, before a separating clutch 37. The sun 23 drives the hydrostatic pump 24 directly or through epicyclic or, as shown, conventional reduction gearing. Servomotors 38, 39 control motor and pump swash-plates 27, 25 respectively. The sun 23 may be braked by hydraulic locking of the pump or by a friction or a positive dog brake 34 which may be a one-way brake when the pump reaches maximum piston displacement. The clutch 28 and the brake 34 may be engaged by mechanically, hydraulically or electrically actuated engaging means. In operation, with the pump swash-plate 25 not tilted, the sun 23 idly overruns. By tilting the pump swash-plate the then driven motor 26 which has its swash-plate tilted to a high angle for low speed, high torque, drives the output shaft 29 through the engaged clutch 28. The output shaft is accelerated by swash-plate control until the speed of the output ring 22 exceeds that of the input carrier. The sun will first slow down, come to rest, and then, as it is urged to rotate backwards, the brake 34 and clutch 28 are simultaneously respectively engaged and disengaged, and the ring is overdriven for wholly mechanical transmission through the planet gear. For engine braking and towed starting, the output ring 25 drives the input carrier 36, the sun 23 being braked; alternatively, for a higher carrier speed, the clutch 28 may be engaged and the swash-plates appropriately controlled so that the motor drives the pump and hence rotates the sun. For reverse, the swash-plates are appropriately controlled to reversely rotate the motor 26 and the clutch 28 is engaged. In Fig. 2 (not shown) the pump and motor are coaxially close-coupled and offset parallel to the input and output shaft. In a conventional vehicle arrangement (Fig. 3, not shown), the input and output shafts extend from opposite sides of the gearing. In transversely mounted engine arrangements (Figs. 4 and 5, not shown) the output ring is geared to the differential cage on the driving axle. The gearing may be controlled manually or automatically depending on speed and load by means not described.
Patent GB-1084432-A (GB)
Title: Method and means for constructing pressure vessels
IPC: E04G21/12
Filed: 1964-07-24
Abstract: 1,084,432. Hollow concrete cylinders. F. M. ADLER. Oct. 22, 1965 [July 24, 1964; Dec. 17, 1964], Nos. 29776/64 and 51439/64. Heading F2P. A concrete pressure-vessel is constructed from circular members each including two or more segments 9 around the periphery of which a cable 43 is wound, the segments then being forced apart by means of jacks and secured there so that the cable is in a tensioned condition. The segments are of concrete with prestressed reinforcement 41, 42 and have inside them hollow cells 51 arranged around an arc which is eccentric to the radius of the segment. The segments are forced apart by jacks which are placed between their ends and are kept apart by concrete packing 52 and a non-load bearing in fill 53. A number of the said members are built one above the other to form the walls of a tall cylindrical pressure vessel (Figs. 1a, 5a &c., not shown) of which the ends are closed by inwardly protruding concrete domes perforated centrally for access. Junctions between the successive layers of segments are made with beds of green mortar. The cable 43 is wound in a vertical series of separate " socks " each of several layers of the winding separated by steel straps 45 and confined at their ends by channel sections 50 with tie-rods 49. After tensioning, the layers are grouted. The vertical assembly of circular members is surrounded by a ring of vertical pre-stressing cables of which the ends are anchored in ring beams at either end of the vessel and by a reinforced concrete skin 24. The inside of the vessel is lined with gasproof plastic membranes 28 with horizontal joints 28 which can burst under excess pressure as a safety precaution. Each annular member is raised on jacks located in recesses 59 to separate it from the member below whilst the cables are tensioned, and the completed assembly is subjected internally to a test pressure until the outer skin 24 has been completed. The vessel is erected on a concrete cap itself supported in precast piles. The cap carries a ring-beam upon which are circumferentially disposed resilient bearings which support the ring beam which anchors the vertical cables, so that the vessel can expand radially relative to its supporting structure.  A service lift is installed in a circular shaft adjacent the outside of the vessel and a platform inside it can be raised or lowered internally by winches.
Patent GB-727076-A (GB)
Title: Speed regulating systems for a.c. motors
Inventor: FRENCH PETER RAYMOND JOSEPH
IPC: H02P7/26
Filed: 1952-11-25
Abstract: 727,076. Automatic speed control systems. BRITISH THOMSON-HOUSTON CO., Ltd. Nov. 16, 1953 [Nov. 25, 1952], No. 29801/52. Class 38 (4). [Also in Group XXXVII] The speed of a single-phase A.C. motor is controlled, in accordance with the difference between a speed responsive and a reference voltage, by a pair of reversely connected thyratrons (or the like) in series with the motor. As shown, reversely connected thyratrons V2, V3 are connected in series with a repulsion motor M and the firing angle is controlled by a saturable reactor SRA having its saturating winding SRD in the anode circuit of a pentode V1 controlled in accordance with the difference between a reference voltage from potentiometer P1 and the voltage of a tachometer generator TG driven by the motor. The grid circuits of the thyratrons are coupled by a transformer T2P to provide the required 180 degrees phase shift in the firing voltage. Starting arrangements.-The starting relay CR is energized through thermal delay switch TDS, to allow the thyratrons to heat up. An auxiliary contact cr4 closes the supply to the valve V1 whereby the reference voltage builds up in a time dependent on C2 to provide gradual acceleration. Modifications.-A larger motor may be controlled by ignitrons " anode fired" by the thyratrons V1, V2, Fig. 2 (not shown).
Patent GB-1203284-A (GB)
Title: Improvements in or relating to hulling machines
IPC: A23N5/00
Filed: 1967-06-28
Abstract: 1,203,284. Hulling machines. WILLIAM McKINNON & CO. Ltd. 26 Aug., 1968 [28 June, 1967], No. 29810/67. Heading A2Q. [Also in Division B2] A hulling machine, particularly for coffee cherries, comprises a series of circumferentially spaced hulling bars 11 forming a cylindrical cage, a rotating paddle arrangement 30 mounted on a shaft 26 within and coaxial with the cage to agitate the coffee cherries for removal of their husks whereby the hulled cherries and husks are enabled to pass through the spaces between the bars 11, and a feed conveyer to feed coffee cherries to be hulled from a hopper 25 into the chamber. The conveyer is preferably a screw 31 mounted on the shaft 26. The paddle arrangement preferably consists of four paddles 32 which are secured to spiders 33 for radial adjustment. Means for simultaneously radially adjusting all the bars 11 is also provided. As shown in Fig. 1 this comprises replaceable bearing rings (19) each having a bearing flange 20A of a selected radius and which co-operates with a ring 16 having radial slots 17 to receive the ends of the bars 11. Worm drive clips (not shown) encircling the bars at each end of the cage hold the bars at the selected radius. Replacement of the rings 19 to adjust this radius is effected by removing cover plates 23, 24 from apertures in the side frame members 12 after unscrewing the bolts shown, the rings 19 being pushfitted on bosses integral with these cover plates. In a modification (Fig. 3, not shown), adjustment of the radius of the bars (11) is effected by providing conical bearing surfaces on rotatable sleeves (43) which are threadedly engaged with threaded fixed sleeves (41) secured to modified cover plates (23<SP>1</SP>, 24<SP>1</SP>). In both embodiments a larger space is left between two of the bars 11 at the bottom of the cage which space is filled by a removable plate 22 to allow blockages to be cleared. A receiving surface 21, inclined to form a shoot, passes the cherries and husks to a pneumatic separator 50, Fig. 4 (see Division B2).
Patent GB-649800-A (GB)
Title: Improvements in or relating to automatic machinery for making staples
IPC: B21F45/24
Filed: 1948-11-17
Abstract: 649,800. Parcelling staples. BRITISH BREHMER, Ltd., and SWAIN. R. H. Nov. 17, 1948, No. 29907. [Class 94(i)] [Also in Groups VIII and XXII] In a machine in which staples are glued together to form a U-section strip 27 which is fed along a delivery rail 4, the strip is cut.into predetermined lengths by a vertically-movable knife blade 13 which is operated automatically by engagement of the end of the strip with a buffer stop 24, 25 arranged in front of the delivery end of the rail. The blade 13, together with an inclined ejector plate 14, is carried by a transverse slide bar 11 supported between guide members 12 in a rectangular frame detachably secured to the rail 4 by retaining pins 7. The bar is movable downwardly against the action of springs 19 by connecting-rods 18 coupled to the armature 17 of a solenoid enclosed in a casing 16. The circuit of the solenoid includes a micro-switch 23 operable by a spring-loaded plunger 24 and adaptor sleeve 25 which together form the buffer stop. Sleeves of different lengths may be fitted to the plunger to vary the length of the strip cut off. The ejector plate is formed with a cut-away portion 15 to ensure that downward pressure is applied to the cut-off strip as near as possible to the sleeve, thereby avoiding buckling of the strip. The Provisional Specification describes a construction to which the knife blade is operated mechanically.
Patent GB-446270-A (GB)
Title: Improvements in circular looms
IPC: D03D37/00
Filed: 1934-10-19
Abstract: 446,270. Circular looms; shuttles. BRITISH CELANESE, Ltd., 22, Hanover Square, London, and HALE, F. C., and YEADON, R., c/o British Celanese, Ltd., Spondon, near Derby. Oct. 19, 1934, No. 29952. [Classes 142 (ii) and 142 (iii)] A circular loom shuttle adapted to be positioned within the shed by rotatable slotted vane wheels 11 passing through the warps into contact with flanged rollers 10 on the shuttle, is provided with guard means, in the form of a flat plate 17 or a stiff wire, for resisting any tendency of backwardly rotating vane wheels to carry the warp threads inwardly towards the rollers. The forward end of the plate 17 or the wire is bent to fit into a hole in the shuttle body in order to prevent the formation of any crevice into which the warps can enter. Specification 413,376 is referred to.
Patent GB-414366-A (GB)
Title: Improvements relating to the manufacture of fuel briquettes from carbonaceous material
IPC: C10L5/10
Filed: 1932-10-26
Abstract: 414,366. Agglomerating fuel. ROBERTS, A. A., Imperial House, Kingsway, London. Oct. 26, 1932, No. 29981. [Class 50.] In the manufacture of briquettes from carbonaceous materials, a cementitious binder in excess of that necessary for the bond is added to the mixture and the combustion temperature maintained by the addition of an accelerator comprising a boron compound such as boric acid. The carbonaceous material may comprise coal, coke, sawdust, tan bark, peat, lignite, anthracite and residuums ; the binder may comprise mineral cements, preferably 6 per cent by weight, sulphite lye or lime ; and the accelerator may comprise as an addition to the boron compound, metallic salts. Bitumen and water may be added to the mixture to assist the bond and copper sulphate or strontium compounds to impart colour to the flame. The moulding pressure is in excess of that necessary for maintaining the coherence of the briquette and may be as high as 6000 lbs. per square inch. Specifications 363,679, 402,107, 402,139, and 414,361 are referred to.
Patent GB-153574-A (GB)
Title: Process for effecting the change of calcium cyanamide into urea
IPC: C07C273/06
Filed: 1920-10-25
Abstract: Urea is obtained by treating calcium cyanamide with nitric acid in the presence of a strong solution of calcium nitrate. Specifications 816/10 and 17018/11 are referred to.
Patent GB-1517828-A (GB)
Title: Aqueous dispersions of olefinic resin compositions and process for preparation thereof
IPC: C09D123/00
Filed: 1976-07-20
Abstract: 1517828 Olefin polymer dispersions MITSUI PETROCHEMICAL INDUSTRIES Ltd 20 July 1976 [22 July 1975] 30164/76 Heading C3M Dispersions of (I) spherical particles of diameter not exceeding 3 microns and consisting of a resin composition comprising (a) 50-99 % carboxyl-free olefin polymer of intrinsic viscosity 0À1-5 and (b) 1-50% of a carboxyl-containing olefin polymer having an intrinsic viscosity of 0À04-1 and an acid number of 30-150, in (II) an aqueous medium which is free from surfaceactive agents and solvents for the polymers, may be prepared by mixing the molten resin composition with the aqueous medium at 140 to 300 C. in the presence of at least 0À2 equivalents of a base relative to the carboxyl groups of polymer (b). Many examples are given in which blends of (b) acrylic acid modified polyethylene, maleic anhydride modified polyethylene or polypropylene, or copolymers of ethylene with acrylic or methacrylic acid with (a) polyethylene, polypropylene, copolymers of ethylene with propylene or butene-1, or ethylene/vinyl acetate copolymer are dispersed in water in the presence of sodium or potassium hydroxide. The dispersions may be used in coating compositions and floor polishes.
Patent GB-758459-A (GB)
Title: Improvements in or relating to preparation of purified hydrous oxide gels
Inventor: HUNTER EDWARD ALLEN
IPC: B01J21/00
Filed: 1953-11-02
Abstract: 1(1) 1(2) 1(3) A method for removing contaminating ions from synthetic hydrous oxide gels, which may be used as catalysts or cataly tic supports, after formation by precipita tion of the hydrous oxide gel from a solu tion of its salt with a basic precipitant characterized in that the slurry of the gel is washed several times with water and is then brought into contact with an ex change resin to remove the contaminating ions.  Preferably the basic precipitant used is ammonium hydroxide and the resins may be acidic or basic or a combi nation of both.  Among such hydrous radicle gels which may be treated are aluminium, magnesium, zinc, chromium, titanium, iron, zirconium, beryllium, cop per, cobalt, nickel, cerium, thorium, silica and co-gels with silica.  Reference to a special means of contacting is made in Specification 750,104.
Patent GB-1416714-A (GB)
Title: Paper processing device
IPC: B26D1/20
Filed: 1972-06-28
Abstract: 1416714 Paper trimming device M MYERS & SON Ltd 16 April 1973 [28 June 1972] 30245/72 Addition to 1247681 Heading B4B A paper trimming machine as claimed in claim 1 of patent Specification 1,247,681, the machine further comprising means 29, 30, 33, 34 mounted on the base board for supporting a roll of paper 28 which is to be cut. The roll support means includes a pair of brackets 29, 30 having slots 29a to 29c and 30a to 30c in which the ends of bars 33, 34 are rotatable. The roll is positioned on the bars and as the free end of the roll is pulled over the cutting area the roll rotates together with the bars; the spacing of the bars may be altered to suit the size of roll.
Patent GB-617653-A (GB)
Title: Improvements in variable inductance tuning devices
IPC: H01F21/06
Filed: 1946-10-10
Abstract: 617,653. Transformers and inductances. BRITISH THOMSON-HOUSTON CO., Ltd. Oct. 10, 1946, No. 30288. Convention date, Oct. 12, 1945. [Class 38 (ii)] In a variable inductance tuning device having two co-axial coils 2, 3, the variations in coupling between the coils caused by the axial movement of an iron core 5 into the coils are counteracted by concentrating the majority of the turns of one of the coils in a region at the core entrance end of the coil, as at A, while the remainder of the turns are openly and evenly distributed. over the remainder of the coil, as at B. Another embodiment provides for the remainder of the turns to be accommodated in a region between the concentrated section at A and the opposite end of the coil. The turns of the secondary coil 3 may also be non-uniformly distributed. Specification 556,774 is referred to.