baber/WOPTO huggingface dataset:
Patent GB-711020-A (GB)
Title: Improvements in and relating to braking devices for elevators
IPC: B66B1/32
Filed: 1952-10-03
Abstract: 711,020. Braking devices for elevators. INVENTIO AKT.-GES. Oct. 3, 1952 [Oct. 31, 1951], No. 24871/52. Class 103(1) [Also in Groups XXX and XXXV] A braking device for elevators capable of ensuring a retardation free from impacts and exact stopping is characterized in that it consists of a brake magnet, an electric amplifier, a tachometerdynamo and a source of voltage, the tachometerdynamo being connected in between the source of voltage and the input of the amplifier. In the circuit illustrating a retardation depending on distance, a resistance W1, acts as a voltage divider and is connected to a constant direct current voltage. During movement of the elevator, the potential at A is determined by the tapping K1 on the resistance Wl. This tapping being so adjusted that when the elevator speed is a maximum the potential of the grid of the amplyfying tube V1 is sufficiently high to cause the brake to be completely lifted. During the braking period, the potential of point A is dependent on the position of the contact K3 which is dependent on the distance of the elevator cage from the storey level. D is a tachometer-dynamo, the voltage of which is proportional to the elevator speed. The gas filled tubes V2 and V3, the transformers T1, T2, T3 and the resistance W6 represent the thyratron connection; the working point of which is determined by the voltage divider W3 and W4. The voltage of the output of the thyratron tubes V2 and V3 is applied to the coil M of the brake B so that the braking pressure of the brake B becomes a function of the grid potential of the tube V1. Another arrangement is shown in which the retardation is dependent on time. This is achieved by the insertion of a capacitor discharging through a resistance and filter between the voltage input and the tachometerdynamo.
Patent GB-831837-A (GB)
Title: New esters of hyponitrous acid and their preparation
Inventor: SCOTT GERALD
IPC: C07C203/00
Filed: 1957-08-07
Abstract: The invention comprises esters of hyponitrous acid in which both organic residues contain one ether oxygen atom on the alpha carbon atoms and said alpha carbon atoms are otherwise attached only to carbon.  The compounds have the formula ROCR1R11ON=NOCR1R11OR, wherein R, R1 and R11 are organic radicals, the same or different, and R and R1 or R1 and R11 may be linked together so as to form, with the alpha carbon atom, a ring.  More particularly R may be alkyl, cycloalkyl, aralkyl, aryl or heterocyclic, R1 and R11 may be alkyl, aryl, aralkyl, cycloalkyl, heterocyclic or may together and with the alpha carbon atom be cycloalkyl, heterocyclic, saturated or unsaturated and may carry further substituents such as cyano, carboxylic ester, halogen or alkyl, preferably on the alpha carbon atom.  The novel compounds may be prepared by interacting at a temperature below -20 DEG  C. silver or another metal hyponitrite and a compound having the formula X.CR1R11OR, where X is a halogen atom. The products are useful as catalysts for the polymerization of ethylenically unsaturated compounds.
Patent GB-235075-A (GB)
Title: Improvements in or relating to apparatus for controlling the supply of material to a fluid in constant or varying proportions
IPC: C02F1/68
Filed: 1924-10-20
Abstract: 235,075. Stein, M. F. Oct. 20, 1924. Ball and float valves; electrically-actuated valves.-A device for controlling the supply of material to a fluid in accordance with the flow of the latter has the supply controlled by a device operated by a varying liquid level which level is produced by means controlled by the flow of the main fluid and by an auxiliary float itself influenced by the varying level. In the form shown in the Figure, the supply of material is regulated by a V notch adjusted by a float 20 acting through bell crank lever 21. The float 20 works in a tank 17 having an open discharge orifice 19 and supplied with fluid from the main conduit 2 through pipes 10 and 18 under the control of a valve 12. The valve 12 is actuated by a diaphragm 8 subject to the pressures existing in either side of a restriction 7 in the main conduit and a float 16 counterbalanced by a weight 16a and working in a bank 15 connected to the pipe 18.In the event of the main flow increasing, the alteration of pressures acting in the diaphragm open the valve 12 to admit fluid to the tanks at a greater rate than it is discharged from the orifice. The consequent use of level acts through the float 20 to regulate the V notch and through the float 16 to restore the valve 12 to its normal position. The float 16 may be paraboloidal in shape or other shape designed to control the flow in constant arithmetic, geometric or varying proportions. The two floats may be arranged in a single tank. In a modification the fixed orifice 19 is replaced by an orifice controlled by a second valve connected to the float 16. The inlet and outlet valves may be actuated by solenoids under the control of switches operated by the float 16. In a further modification the float 16 controls the outflow from the tanks which are continuously supplied with fluid. Specifications 3397/10 and 5400/11, [Class 86, Mixing &c.], are referred to.
Patent GB-946828-A (GB)
Title: Process for the manufacture of very pure silicon carbide
IPC: C01B31/36
Filed: 1960-07-18
Abstract: Pure crystalline SiC is prepared by thermal splitting of a vaporized or gaseous organo-silicon compound in which the atomic ratio of C to Si is greater or smaller than 1 : 1.  At least one such compound may be mixed with at least one other organo-silicon compound, say where the atomic ratio is 1 : 1, and decomposition may be effected in the presence of a gaseous diluent, e.g. H2, A, He, N2, or CO, employing 60% vol. or more diluent.  The diluent may be recycled after purification, e.g. by cooling below - 60 DEG  C., or washing.  The splitting may be at 0.01-50 atmos. and 700-2500 DEG  C., in the presence of heated rods, tubes, plates, spirals, or filaments of carbon, graphite, Si, Ta, Ti, W, Mo, SiC, or B4C1 on which the SiC is deposited. The gas velocity should be below 5 m./sec.  The compounds may be silanes or halogeno-silanes containing one or more organic radicals, e.g. methyl, ethyl, propyl, butyl, vinyl, allyl, propenyl, butenyl, cyclohexyl, cyclohexenyl, phenyl, xenyl, tolyl, naphthyl, or benzyl, which may be bonded to Si through O, N, P, S, Se or B.  The radicals may include substituents, e.g. halogen, nitro, amino, hydroxyl, mercaptyl, or cyano. Cyclic organo-silicon compounds may also be used. Doped SiC, containing 10-10-12% doping agent suitable for semi-conductor use, may be obtained if the organo-silicon compound contains an element of Groups 2-7, e.g. N, B, Al, or P, or if the vapour of such an element or a compound thereof is included in the splitting, e.g. NH3, AlCl3, or B hydride, or halide.  The organo-silicon compounds exemplified are: dimethyl dichlorosilane, disilyl methane [CH2-(SiH3)2], benzyl silane, vinyl trichlorosilane, g -chloropropyl trichlorosilane, tris-(trimethyl - silyl - methyl) - arsine, or phosphine, (CH3)3SiCH2OH, [(CH3)3SiCH2]3B, or [(CH3)3 SiCH2]4Sn.  Specification 899,947 is referred to.
Patent GB-911909-A (GB)
Title: Strip tensioning
IPC: B21F17/00
Filed: 1961-07-11
Abstract: 911,909. Making pressure vessels; coiling; soldering; helically jointing. DORR-OLIVER Inc. July 11, 1961 [July 11, 1960], No. 25059/61. Classes 83 (2) and 83 (4). In apparatus for winding strip material on to a mandrel from a reel which is rotated as the strip is unwound, the strip is tensioned by a retarding mechanism which is freely pivotable about an axis which intersects the plane of the strip substantially at a right angle. A tubular vessel is constructed by multiple overlap helical wrapping of a strip 12 on to a chuck rotated mandrel 11 from a reel 13 mounted on an axle 21 of a reel support 17. A braking means comprises a dynamometer 25 mounted on the reel support 17 and freely pivotable about a pin 18 in a frame 16 mounted on a lathe carriage (not shown) which provides longitudinal movement. Intermeshing step-up gears 26, 27 attached to the axle 21 drive a dynamometer 25 at a higher speed than the reel 13 so that a braking action applied to the dynamometer 25 retards the speed of the reel 13 thereby tensioning the strip 12. The axis of the pivot 18 is located in a plane approximately one-third of the distance from the edge 41 to the edge 42 so as to produce a maximum tension in the leading or overlapping edge and a minimum or zero tension in the trailing edge of the strip 12 during winding. The overlapping portions of the strip are brazed, the brazing material 31 on a carrier 30 being fed between the layers of strip material. Flux is supplied by applicators 32, 33 to both faces of the strip, and a heater 35 fuses the brazing material to bond the laps of the strip. In a modification the tensioning device 54 comprises a housing 58, having top, bottom and side walls 61, 62, 63, and a series of rollers 64 rotatable on axles 65, 66 which extend through the sides 63 and to which are keyed intermeshing gears 68. A gear 70 fitted to one of the extended shafts 66 meshes with a gear 71 to drive a piston pump 72 and provide a braking force on the rollers 64. A piston pump 72 pumps a fluid, e.g. oil, through a conduit 73 past a constrictor valve 74 to a reservoir 75 from which it is re-circulated to the pump. A pressure accumulator 76 includes a hollow chamber and a diaphragm 77 which traps a compressible fluid, e.g. gas, in a chamber 78. Adjustment of the valve 74 produces the desired back pressure, measured by a gauge 74a, to control the braking force applied to the tensioning rollers 64. The assembly 54 is pivoted about pivots 59 and ball bearings 81 in a frame 56 mounted on a lathe carriage 57. The strip 52 is drawn from a reel 53 through a guide 86 and around the rollers 64, the first one of which is supplied with guide flanges 64a and on to a mandrel 51. The brazing arrangement comprises a strip braze 90 fed from a drum 89 through a flux coating device 92, a dryer 93, a guide 94 and a heater 95. The strip material may be initially wound on the supply reels in a tensioned condition and the apparatus used to wind overlapped strip on to the mandrel which may be of a collapsible type or formed of a material which can be melted or dissolved.
Patent GB-707007-A (GB)
Title: Improvements relating to organo-polysiloxane resins
IPC: C09D183/04
Filed: 1951-10-26
Abstract: Colloidal solutions of polysiloxane resins, suitable as varnishes, are produced by mechanically disintegrating a gelled polysiloxane which has been swollen by a solvent.  The resulting solutions have a higher viscosity for a given solvent content than those made from ungelled resins.  In examples: (1) A 60 per cent. solution in toluene of a methylphenyl polysiloxane resin of R/Si ratio 1.75, prepared by the method of Specification 657,704, was heated to drive off the solvent and further heated for several hours at 200 DEG C. to gel the resin.  Toluene equal to that removed was added to swell the gel which was then disintegrated with a turbo-stirrer and colloid mill to give a varnish having a viscosity of 380 c.P. compared with 40 c.P. for the original solution.  The varnish, diluted to 50 per cent. concentration gave hard glossy transparent coatings.  (2) A gelled varnish of resin concentration 80 per cent. and R/Si ratio 1.6 was diluted with toluene to 60 per cent. solids and disintegrated with a turbo-stirrer and roller mill to give a varnish of viscosity 420 c.P. At low concentrations the varnish gave opaque coatings and at high concentrations relatively transparent coatings.  A varnish containing 60 per cent. resin, pigmented with 30 per cent. aluminium powder gave a uniform paint layer on a glass plate.  (3) A mixture of methyltrichlorosilane, dimethyldichlorosilane, phenyl trichlorosilane and diphenyldichlorosilane was hydrolyzed and condensed in toluene and ether to give a resin which was then washed.  After separation, the resin solution was dried and the solvents distilled off.  The resulting resin as a 60 per cent. solution in toluene had a viscosity of below 50 c.P.  This solution was heated until gelation began, toluene was added to give a solids content of 50 per cent. and the gel disintegrated in a ball mill.  The resulting varnish had a viscosity of 300 c.P. (4) a methyl-phenyl polysiloxane resin varnish of R/Si ratio 1.7 was heated to remove solvent and low polymers.  A part of the product was dissolved in toluene to give an 80 per cent. solution. Another part was gelled by heating at 250 DEG C. for an hour and toluene added to a solids content of 58 per cent.  The gel was then disintegrated.  The varnishes from the ungelled and gelled resins are compared for (a) viscosity; (b) hardness after baking; (c) uniformity of thickness of coating on a vertical surface.
Patent GB-302272-A (GB)
Title: Method of constructing pneumatic tyres
IPC: B60C9/22
Filed: 1928-08-31
Abstract: 302,272. Goodyear Tire & Rubber Co., (Assignees of Darraw, B.). Dec. 13, 1927, [Convention date]. Jackets and covers. -To prevent undue stretching in the subsequent tyre-shaping operation, the breakerstrip 14 is applied to the foundation 10 of a tyre cover in a crimped or equivalent condition so as to provide the necessary surplus of material longitudinally. Specification 284,397. [Class 144 (i), Wheels for vehicles], is referred to.
Patent GB-1009106-A (GB)
Title: Improvements in or relating to methods of producing permanent magnet materials
IPC: H01F1/06
Filed: 1963-06-25
Abstract: 1,009,106. Making composite wire; drawing wire; altering physical properties; welding by pressure. ROLA CO. (AUSTRALIA) PROPRIETARY Ltd. June 25, 1963 [July 2, 1962], No. 25222/63. Headings B3A, B3P, B3R and B3V. [Also in Division H1]  Permanent magnet materials are made by successive elongations of cased ferromagnetic wire. Iron wires encased in bronze are drawn down until the iron wires have a diameter of 0À005 inch. 300 of such drawn encased iron wires are assembled parallel to each other and the group enclosed by an aluminium casing, to form a primary composite body. Each of a number of such primary composite bodies is drawn until it has a diameter of 0À005 inch, the bronze casings being cold welded together during the drawing operation. A secondary composite body is formed by assembling a group of 300 parallel drawn primary composite bodies and enclosing the group in an aluminium casing. The resulting secondary composite body is drawn until it has a diameter of 0À005 inch to become a completed secondary compact. This is then immersed in a caustic solution to dissolve the aluminium casings to permit the groups of united encased iron wires to be separated from each other. The casings enclosing the primary composite bodies may be of bronze instead of aluminium. The thickness of the casings is such as to result in an iron content of approximately 30% by volume of the completed secondary compact. Specifications 896,881 and 1,009,104 are referred to.
Patent GB-150719-A (GB)
Title: Improvements in or relating to building sets for toys
IPC: A63H33/06
Filed: 1920-09-01
Abstract: 150,719. Vancl, J., (Assignee of Konig, A.). Sept. 9, 1919, [Convention date]. Mechanical constructions, details for building- up.-Toy constructions are built up of stripmetal elements consisting mainly of two types a, m, Fig. 1. The elements a consist of metal strips having hooks c formed at the ends, while the elements m are formed with eyes g, parallel with the edge of the strip, pressed out of the body of the strip. The strips m may also have their ends forked, as shown at e, Fig. 2, the prongs being bent at right-angles to the strip, or the ends may be formed with hooks. The strips may be of various lengths, and angle strips, rods, wheels, &c. may be associated with them for the construction of toys. A wheel. barrow, Fig. 10, or a roundabout are among the toys that can be built with the elements.
Patent GB-1078888-A (GB)
Title: Sealing arrangements
Inventor: COSTER NEIL TREVOR
IPC: G05G25/04
Filed: 1966-06-07
Abstract: 1,078,888. Sealing apertures for control pedals. FORD MOTOR CO. Ltd. June 7, 1966, No. 25311/66. Heading B7H. In an arrangement for sealing a motor vehicle control pedal 11 in an aperture 13 in a floor panel 12, a polyurethane foam or waxed felt seal 16 seals the pedal 11 in two plastics members 14, 15 joined together through the aperture 13 so as to grip the panel 12 between them. The members 14, 15 are joined by snap fasteners comprising pins 23 engaging holes 24. Ridges 17 around the members 14, 15 engage the panel 12, and upstanding portions 19 cooperate to form a rectangular recess 22 for the seal 16. Splits 26, 27, 28 in the members 14, 15 and in the seal 16 permit their assembly around the pedal 11.
Patent GB-407080-A (GB)
Title: Improvements in or relating to bed settees, couches, divans and the like
IPC: A47C17/14
Filed: 1932-09-12
Abstract: 407,080. Bed-settees. ANDREWS, F. J., 124, Quebec Road, Ilford, Essex. Sept. 12, 1932, No. 25373. [Class 52 (ii).] A head rest 1 for bed-settees &c. is connected to the settee frame 2 by two pairs of substantially parallel links, the upper link 3 of each pair being joined by a rod 3a which is held in brackets to form the pivot. A plate 6 on the head rest is pivoted to the two links of each pair and the other end of the bottom link is slotted as at 7 and engages with a stud 8 on the bracket 9 which is secured to the back of the chair. Two further studs 10 are mounted on the bracket so that the end of the link can be dropped between them and held in an upright position. A spring 11 connecting the link at 4a with the stud 8 acts to hold the link in the locking position between the two studs 10.
Patent GB-299586-A (GB)
Title: A new or improved wire strand and process for making the same
IPC: D07B1/08
Filed: 1927-09-26
Abstract: 299,586. Jackson, L. Mellersh-, (American Chain Co., Inc.). Sept. 26, 1927. Wire ropes; strands of special section, with; shaping by pressure.-Wire strands or ropes for use as stays or tension members of aeroplanes are made of streamline section. The strands are preferably worked' while cold to convert the individual wires 2, or other components, from their original circular form to the streamline form. The ends 3 of the strand may have a screw-thread formed thereon to receive a shacke or other attachment member 5. The component wires 2 are preferably helically pretwisted to form an inert-lay strand.
Patent GB-173568-A (GB)
Title: Improvements in and relating to the construction of thermionic valves as used in wireless signalling systems
IPC: H01J19/50
Filed: 1920-09-03
Abstract: 173,568. Taggart, J. Scott-, and Farley, G. G. Sept. 3, 1920. Vacuum tubes. - In a thermionic valve one or more rigid supporting-bars C are secured substantially rigidly at one end to an electrode, such as an anode A or a grid, and at the other end are fastened to projections P of insulation material on a stem S by tying or otherwise, without fusion. The projections may be of glass or silica, and the rods may be tied by wire. In a modification, the projections are in the form of rods or tubes of extended length, and the bars are riveted thereto. Means for securing the bars, as described in Specification 159,920, may be employed. According to the Provisional Specification, the projections may pass through holes in the bars.
Patent GB-233977-A (GB)
Title: Improvements in or relating to gauges for hair clippers
IPC: B26B19/20
Filed: 1924-10-25
Abstract: 233,977. Friedman, S. Oct. 25, 1924. Hair clippers. - A gauge for regulating the length of hair left uncut is slidably and adjustably mounted on a hair clipper in such a manner that the plane of the gauge is at all times at an angle to the plane of the clipper. The gauge has side walls with slots at an angle to its base which engage the clipper, and means, such as a screw serve to adjust the gauge relatively to the clipper. The gauge comprises a base 1, Figs. 5 and 8, formed at its forward end with teeth 2 preferably of greater depth than the cutting teeth of the clipper. The lower surface 4 of the gauge is rounded and the side walls 5 increase in height towards the rear of the gauge and are formed with channels 6 on their inner surfaces to engage the edges of the base plate of the clipper. Adjustment of the gauge is effected by means of a screw 11, Fig. 5, threaded through a cross bar .12 on the gauge and rotatably mounted in a yoke 10 adapted to be secured to the base of the clipper by screws passing through holes 9. The screw 11 may be operated by the driving shaft in the case of electrically-operated clippers, a reversible clutch being provided. In the hand-operated clipper shown in Fig. 2, a rod 17 projects from the gauge and is connected to a cross bar 18 slidable on pins 19 fixed to the clipper. The bar 18 is normally pressed away from the clipper by springs 20. Supported on an offset from the fixed handle 16 is a ratchet wheel 22 in the lower face of which is cut a cam groove in which engages a pin projecting from the rod 17. The movable handle 15 has spring-pressed pawls 25, 26, engaging the ratchet wheel which is thus rotated in one direction as the handles are manipulated. The engagement of the pin in the cam groove causes the gauge to move forward until the pin reaches a radial part of the groove, when the springs 20 return the gauge to the normal position. The rod 17 is provided with a series of openings to receive the pin, so that the limits of the movement of the gauge may be varied. In the construction shown in Figs. 7 and S, the gauge is adjustable by means of a screw 10<1> with a head 9<1> engaging a slot 8<1> formed in the base of the clipper and screwed through a threaded socket 13<1> secured to the gauge. The screw may be rotatably mounted in a bracket 30<1>, Fig. 7, and operated by a handle 35<1> through bevel wheels 33<1>, 31', or by means of a knurled head 29<1>, Fig. 8. Figs. 6 shows a gauge in which the base plate 28 is formed with guiding teeth 29 on its forward edge, and with side, walls 30 of considerable height at their rear ends and sloping downwardly towards the forward edge. The base of the gauge is rounded, and the teeth 29 are upwardly curved. A cross bar 33 connects the side walls at the rear and has a threaded opening 34 for an adjusting screw. The side walls have slots 35 to engage. the base plate of the clipper, and a roller 36 is arranged between the side walls to the rear of the base 28.
Patent GB-1471140-A (GB)
Title: Laminated plastics film
IPC: B32B27/32
Filed: 1974-06-11
Abstract: 1471140 Laminates; seaming non-metallic sheet material CONTINENTAL GROUP Inc 11 June 1974 [29 May 1973] 25542/73 Headings B5N and B5K A laminate is produced by priming a surface of a sub-laminate web having a thickness of 12-50 microns and consisting of an oriented layer of polypropylene between two layers of polyvinylidene chloride with a solution of a plastics resin primer, e.g. a polyurethane, in a solvent to provide an amount of primer having a dry weight in the range 0À1-1À5 grams. per square metre, removing the solvent, e.g. by heating, applying to the primed surface at a temperature 290-320 C. a layer of molten polyethylene having a melt index 1-12, a density of 915-925 kilograms per cubic metre and a thickness of 7-50 microns and bonding to the polyethylene layer a layer of ethylenevinyl acetate copolymer having a thickness of 20-80 microns and a vinyl acetate content of 2-8% by weight. The polyethylene and ethylene-vinyl acetate copolymer layers may be applied by extrusion coating. A bag or pouch suitable for use in packaging, e.g. for meat, may be produced by superimposing two webs of the laminate with the ethylene-vinyl acetate copolymer layers facing each other, passing them together through a heat-sealing apparatus which forms a continuous longitudinal weld seam at each side edge and then forming transverse welds spaced apart longitudinally of the flattened tube so produced which are then cut transversely adjacent each transverse weld.