baber/WOPTO huggingface dataset:
Patent GB-523215-A (GB)
Title: Improvements in or relating to reflectors
IPC: F21V7/09
Filed: 1938-12-28
Abstract: 523,215. Reflectors. NAAMLOOZE VENNOOTSCHAP PHILIPS' GLOEILAMPENFABRIEKEN. Dec. 28, 1938, No. 37679. Convention date, Dec. 31, 1937. [Classes 75 (ii) and 75 (iv)] A bell - shaped reflector is, to produce uniform illumination, formed with hollow rib - divided facets built up in cross-section from a plurality of smoothly merging curves whose respective degrees of curvature decrease towards the margins of the facets. The section of each facet may be a circular arc having on either side a circular arc of less curvature The reflector shown is an internally silvered glass bulb having a high pressure mercury vapour discharge lamp mounted therein, the lower end F of the discharge column coinciding with the focus of parabolic faceted walls 8, a neck portion 2 merged with its reflecting portion, a faceted metallic plate 12 covering a top aperture therein and suspended from the pole wire 6, and a clear bottom portion 1. Alternatively the lamp may be a filament one with its filament in or perpendicular to the axis of the reflector and the parabolic portion may be faceted downwardly as well as circularly and surmounted by a conical or spherical reflector also faceted. The reflector may be used with irradiation or shop window lamps.
Patent GB-756539-A (GB)
Title: Dial garuge for linear-dimension measuring instruments
IPC: G01B3/22
Filed: 1954-12-30
Abstract: 756,539. Dial gauges. AKTIEBOLAGET C. E. JOHANSSON. Dec. 30, 1954 [Jan. 7, 1954], No. 37702/54. Class 106(2). A dial gauge comprises a pointer 3 carried by a resilient band 4 which is supported by springs 10, 11 in a frame 8, twisted about its own longitudinal axis and connected by a spring 12 to a plunger 2 supported either side of the band 4 by a spring 1 and spring diaphragm 5 for longitudinal movement freely through but out of contact with a supporting tube 6 to which the frame 8 is attached and by which the dial gauge is attached to a part 15 of a linear-dimension measuring instrument. Clearance between the band 4 and plunger 2 is provided by a hole 13 in the plunger or by offsetting the plunger in the region of the band. Movement of the plunger causes elongation or contraction of the band 4 which rotates the pointer 3 over a scale 9. Specification 390,979 is referred to.
Patent GB-767636-A (GB)
Title: Process for the production of alkali metal perpyrophosphate of low bulk weight
IPC: C01B15/16
Filed: 1954-12-30
Abstract: Products comprising alkali metal perpyrophosphates of low bulk weight are obtained by spraying a melt or solution of an alkali metal phosphate into a hot gas zone to form a voluminous product comprising tetra alkali metal pyrophosphate either directly or by subsequently heating, and spraying said pyrophosphate with a hydrogen peroxide solution whilst the particles are maintained in constant motion and in a dry condition.  The alkali metal: P2O5 ratio in the sprayed solution or melt is adjusted in accordance with that required in the final product and thus in addition to said pyrophosphates and perpyrophosphates, tripolyphosphates and pertripolyphosphates respectively may be present.  Suitable voluminous alkali metal pyrophosphate-containing materials may be obtained from orthophosphates (as described and claimed in Specification 744,576) or from solutions of condensed phosphates, e.g. phosphate glasses (as described and claimed in Specification 764,022) and preferably consist to a major extent or entirely of hollow spheres with a diameter of 0.04-0.6, preferably 0.1-0.5 mm Raising the hydrogen peroxide concentration facilitates the production of products with a high H2O2 content; examples specify 35 and 36 per cent H2O2 by weight concentrations. Increasing the fineness of the hydrogen peroxide spray and increasing the movement of the particles during spraying ensures quicker and better results.  The hydrogen peroxide may, e.g. be sprayed (a) on to a constantly stirred layer of pyrophosphate spread on a large plate or into a mixer in which the pyrophosphate is distributed by a rotating shaft carrying stirrer vanes; (b) on to a layer of pyrophosphate on a vibrating plate (it is desirable to secure continuous production by constructing the apparatus as a shaker-conveyer and spraying at intervals along the conveyer, and essential to avoid sticking to the plate as a result of a sprayed jet impinging directly upon an exposed surface thereof); (c) into a curtain of pyrophosphate formed within a rotating drum; or (d) on to the pyrophosphate moving forward as a fluidized layer: the sprayed material may be recycled in part. The H2O2 content of the perpyrophosphate may be increased by intermediate drying during the spraying operation. A known stabilizer such as magnesium silicate is preferably present in the product: this may be mechanically mixed therewith, but preferably is incorporated in the pyrophosphate during manufacture, or dissolved or suspended in the sprayed solution of hydrogen peroxide or by spraying the pyrophosphate with a suspension in water prior to peroxide spraying, and intermediate drying if necessary.  Examples are given of products having bulk weights of 60 and 40 g. per 100c.c. and H2O2 contents by weight of 14.1 and 11.6 per cent respectively.
Patent GB-915594-A (GB)
Title: Improvements in saddle supports for bicycles and the like
IPC: B62K19/36
Filed: 1960-11-03
Abstract: 915,594. Saddle supports. GATES, G. R. G. Nov. 2, 1961 [Nov. 3, 1960], No. 37745/60. Class 136(3). A cycle saddle support has a stem 10 to enter the seat tube 11, a collapsible connection of parallel limbs 14, 15, 16 between the stem and the saddle which are resiliently urged upwards, at 21, to a vertical position for riding and are pivotable forward and downward to provide a lower saddle position and locking means to hold the limbs in the vertical position. The saddle is attached to a pillar 17. The locking means comprises a quadrant 19 secured to the limbs 15 and having holes 24 and 25 spaced 90 degrees apart which are engaged by a spring loaded plunger 27 operated by a cable 29. A cushion 31 provides shock damping when the linkage is lowered.
Patent GB-1328709-A (GB)
Title: Chlorination of cyanuric acid
IPC: C07C/
Filed: 1971-08-12
Abstract: 1328709 Chloroisocyanuric acids FMC CORP 12 Aug 1971 [21 Aug 1970] 37858/71 Heading C2C Chloroisocyanuric acids are produced by reacting cyanuric acid, sodium hypochlorite and chlorine at a temperature >0 C. and preferably <25 C. until the pH of the resulting aqueous slurry of chloroisocyanuric acids is between 1À7 and 3À5. The cyanuric acid and NaOCl are preferably continuously combined and then the mixture continuously chlorinated at 14-16 C. and at a pH of between 2À5 and 3À5. When a mixture of cyanuric acid and NaOCl with a mole ratio of cyanuric acid to NaOCl of about 1 : 1À7 is chlorinated, trichloroisocyanuric acid is produced and dichloroisocyanuric acid is the product when this mole ratio is about 1 : 1. This latter ratio may be achieved by mixing together NaOCl and cyanuric acid until the pH of the mixture is between 8À4 and 9À0.
Patent GB-843967-A (GB)
Title: Improvements in or relating to finned tubing having resistance-welded fins
IPC: B21C37/26
Filed: 1957-12-06
Abstract: 843,967. Making gilled tubes; welding by pressure. BUSSE, F. Dec. 6, 1957 [Dec. 11, 1956], No. 37956/57. Classes 83 (2) and 83 (4). [Also in Group XIII] In making a finned tube, especially for heat-exchangers of gas-cooled atomic power plant a U or channel-shaped strip is wound helically around the tube and the base of the U or channel is electric resistance seam-welded to the tube. A flat metal strip is continuously drawn from a reel, shaped to U-section 2 and then wound helically around the tube 4, Fig. 3, being fed either to contact the tube in advance of a cooled roller electrode 5 engaging the base of the U or directly to the electrode. The pitch of the helix is twice the width of the shaped strip. A second cooled roller electrode 6 is pressed against the tube and the two electrodes are connected to the secondary of a transformer. Two such strips may be wound, preferably simultaneously, on the tube when each roller electrode engages one of the strips. Three or four strips may be welded to the tube. The walls of the U may be spread apart as in Fig. 7 as they approach the tapered electrodes 5, 5a, or the walls may be spread before the strips are wound on the tube and are returned to correct shape after welding. The rollers, which may be trued during welding, are arranged side-by-side or are spaced by 180 degrees around the tube. The tube or base of the U-section strip may be provided with projections 12, Fig. 9, to ensure that rapid heating and welding is effected. In this case the U has a curved base and the rollers have corresponding curved surfaces and after welding the strips are given a rectangular U-section by means 14.
Patent GB-1531303-A (GB)
Title: Beta-galactosidase
IPC: C12N1/00
Filed: 1976-09-14
Abstract: 1531303 Lactase IMPERIAL CHEMICAL INDUSTRIES Ltd 31 Aug 1977 [14 Sept 1976] 38002/76 Heading C3H [Also in Division C2] A beta-galactosidase (lactase) enzyme is prepared by culturing a micro-organism belonging to the genus of which the micro-organism designated LT-2 (NCIB No. 11259) is a member, the microbiological characteristics of LT-2 being described.
Patent GB-830254-A (GB)
Title: Improvements in or relating to gas discharge apparatus
Inventor: BICKERTON ROY JOHN
IPC: H05H1/12
Filed: 1956-12-12
Abstract: 830,254. Nuclear fusion reactors; electric discharge apparatus. UNITED KINGDOM ATOMIC ENERGY AUTHORITY. Dec. 12, 1957 [Dec. 12, 1956], No. 38011/56. Drawings to Specification. Classes 39(1) and 39(4). In a gas discharge apparatus for producing thermonuclear reactions, of the type wherein a constricted unidirectional high-current pulsed discharge is established periodically in gas substantially along the axis of a containing vessel of substantially circular cross-section having thick electrically-conducting walls, the vessel is provided with windings to which current may be fed to establish within the vessel a magnetic field substantially coaxial with the axis so that spatial instability of the discharge is reduced. The vessel may be provided with an insulating slot parallel to the axis so that alternating current may be supplied to the windings. The windings need not be energised continuously, and may be energised only during part of the operating cycle of the reactor coincident with the discharge. Specifications 830,251 and 830,252 are referred to.
Patent GB-361160-A (GB)
Title: Improvements in or connected with plugs for electric switches
Filed: 1930-12-18
Abstract: 361,160. Locking nuts. MARR, G., 18, Euston Buildings, George Street, London. Dec. 18, 1930, No. 38190. [Class 89 (i).] The block C of an electric terminal is prevented from rotating by a washer A, the lugs E of which enter recesses in the block and the lugs D are then pressed into recess in the base G.
Patent GB-1465049-A (GB)
Title: Electrically operable closure arrangement
IPC: E05F15/60
Filed: 1974-03-28
Abstract: 1465049 Driving arrangements for dynamoelectric machines BOSTWICK GATE & SHUTTER CO (UK) Ltd 28 March 1974 [14 Aug 1973] 38374/73 Heading H2A [Also in Division E2]  An induction motor of the tape in which a coil stator 13 rotates a metal disc armature 10 which drives a roller 1 via gear-wheels 7, 5, 6, and 8 and chain 9. As shown the roller carries a roller shutter but the mechanism can be used to operate any folding closure. A brake pad 14a engages the disc when the motor is inoperative but when engaged does allow slow manual rotation of the mechanism via a pulley wheel 11 secured to disc 10. A limit switch can be operated off shaft 5a and/or a torque limiter provided to protect the mechanism when it meets obstacles.
Patent GB-1111493-A (GB)
Title: Process for preparing polyolefines
IPC: C08F10/00
Filed: 1965-09-08
Abstract: Ethylene polymers are made by polymerizing ethylene alone or in admixture with an alpha-olefin containing up to 8 carbon atoms, in the presence of an organometallic catalyst containing chlorine, titanium and aluminium, in solution, suspension, or in the gaseous phase, under normal pressure or a pressure up to 50 atmospheres, and at a temperature within the range of 20 DEG  to 150 DEG  C., and using the organometallic catalyst in a concentration of less than 0.05 millimole per litre of solvent or dispersing agent when the polymerization is effected in solution or dispersion, or less than 0.025 millimole per litre reactor volume when the polymerization is carried out in the gaseous phase. In addition in the catalyst the molar ratio of the Al to the Ti is at least 10:1, and the solvent or dispersing agent and the monomeric olefin each contain less than 20 p.p.m. of impurities capable of reacting with the catalyst components.  The preferred catalyst is an organoaluminium compound e.g. triethyl aluminium, and TiCl3 prepared by reducing TiCl4 with (C2H5)2AlCl or ethyl aluminium sesquichloride at a temperature within the range of 0 DEG  to 30 DEG  C., in an inert solvent, with a subsequent thermal treatment in the range of 50 DEG  to 150 DEG  C. and separating and washing the solid reaction product.  The alpha-olefin may be propylene or butene-1.  The preparation of polyethylene is exemplified. The polymers may be used without removing catalyst residues.
Patent GB-1358735-A (GB)
Title: Guard actuating linkages
IPC: F16P3/08
Filed: 1972-07-13
Abstract: 1358735 Machinery guards PARNALL & SONS Ltd 13 July 1972 [17 Aug 1971 23 Nov 1971] 38451/71 and 54237/71 Heading F2J A guard device for a manually operated press is interlocked with the starting mechanism and comprises a pair of opposed guards or doors 18, 19 carried respectively at the ends of crossed levers 16, 17 which are fulcrumed at their other ends 14, 15 and centrally interconnected by a pivoted link 22 therebetween whereby both guards 18, 19 can be simultaneously raised or lowered by manipulation of either one of them. A micro-switch 31, actuated by a link 32 pivotally connected to the lever 16, controls a solenoid valve (not shown) in the pneumatic circuit of the press to permit operation of the press only when the guards 18, 19 are fully closed. A tension spring 25 biases and maintains the guards in their extreme upper (open) or lower (closed) positions during loading or operation of the press, the spring 25 passing through a dead-centre position when its attachment pins 26, 27 on the guards 18, 19 are aligned with the fulorumed points 14, 15 of the guards. A further tension spring 28 reduces the overcentre force of the spring 25 in the lower, i.e. closed, position. The guards, or doors, 18 can be made to move relatively in opposite directions by re-arranging the pivotal connection between the link 22 and one of the levers relative the lever pivot and associated guard.
Patent GB-1017753-A (GB)
Title: Improvements in or relating to the manufacture of flat glass
IPC: C03B18/16
Filed: 1962-10-11
Abstract: <PICT:1017753/C1/1> <PICT:1017753/C1/2> An apparatus for use in the manufacture of flat glass during which a ribbon of glass is advanced along a bath of molten metal comprises a tank structure for containing a bath 1 of molten metal (e.g. tin), temperature regulators 9, 10 for maintaining thermal conditions along the bath to ensure that a formed glass ribbon is sufficiently stiff to permit to be taken unharmed from the bath through an outlet 12, a roof structure 6, 7, 8 extending over the tank structure to define a headspace over the bath and also over means 16 for supporting the ribbon 11 and taking it up off the bath and discharging it through the outlet, and means for maintaining a plenum of protective atmosphere in the headspace. The ribbon supporting roll 16 is placed in a pit 14 which is an extension of the bath 1.  A plenum of protective atmosphere is maintained in the pit to prevent ingress of external atmosphere. Alternatively a conveying roll 18 may be placed in a second pit 17 therebeing also provided a sealing means such as a carbon brush 21 spring supported in a seat 22 attached to the floor of the pit, the brush 21 being in sealing relation with the roll 18. A plenum of protective gas is also maintained in this pit.  In this latter embodiment a wall 26 having a groove 28 and pipe 29 for the delivery of protective gas under pressure towards the outlet as described in Specification 1,017,752 may be placed directly above the wall 19 between the two pits.  The roll 16 may be of porous carbon so that protective gas under pressure may be passed through it, or may be steel with a covering of carbon rings. The roll 18 is preferably of stainless steel.
Patent GB-1075729-A (GB)
Title: Improvements in and relating to a sheet separating mechanism
IPC: B65H3/54
Filed: 1965-09-10
Abstract: 1,075,729. Feeding sheets. ZEUTHEN & AAGAARD A.S. Sept. 10, 1965 [Sept. 19, 1964], No. 38799/65. Heading B6B. In sheet separating mechanism for printing machines, such as duplicators, the friction roller or other sheet separator is prevented from separating more than one sheet at a time by front corner members which rest on the top sheet under gravity or spring pressure, can move in a vertical plane, and can also exert pressure at the sides of the stack. In some cases, the corner members incorporate front stops for the top sheets. In one form (Fig. 1), a fixed table 1 for a duplicator supports a stack of sheets, and supports two displaceable side rails 3, each having loosely pivoted thereon at 6, a lever 4 carrying at the front end an angular finger 9, 10 which engages, respectively, over the top corner of the top sheet and the side of the stack, and a front part 11 of the finger engages the front of the stack. The lever may be arcuately formed at 5 so that a spring 8, acting on the rear end of the lever obliquely, can urge the finger 9, 10 downwardly and sidewise. In another form (Figs. 2-5), the duplicator stack table is raised periodically, and each side rail 13 is independent of the table and has a front part 16 which acts as a front stop. A carrier 17, having a pin-and-slot connection 18, 19 with the front 16, carries an angular finger 21, 22 which engages the comer of the top sheet and the side of the stack 14, respectively. The top of the carrier 17 is engaged by a leaf spring 27, adjustable in pressure by an abutment 30, 31, so that top and side pressure is exerted on the finger 21, 22. In a further form (Figs. 6-10), the duplicator stack table 40 is raisable and carries the two side rails 48, and the rails are coupled to further rails 46, 50 and carriages 47. A finger 51 is rotatably and displaceably mounted on each carriage 47 by a pin and slot connection 52, 53 and is urged by a spring in the direction P to exert downward and sidewise pressure on the corner of the top sheet and side of the stack. The finger 51 may have a front stop (Fig. 10).
Patent GB-933970-A (GB)
Title: Signal-translating circuit for a television receiver
IPC: H04N5/213
Filed: 1960-11-11
Abstract: 933,970. Television. HAZELTINE CORPORATION. Nov. 11, 1960 [Dec. 1, 1959], No. 38833/60. Class 40 (3). [Also in Group XL (c)] Combined video and synchronizing signals are supplied to the parallel connected base electrodes of transistors 43, 45, the former being so biased that it delivers an amplified video signal to the image reproducing device 25 and maintains transistor 45 in the cut-off condition whilst when the video signal falls to the blanking level, transistor 43 saturates and allows transistor 45 to conduct and pass amplified synchronizing signals to the scanning generators 31, 33. When transistor 43 is conductive the potential at terminal 29 remains constant at - E 2  so that the scanning generators are isolated from noise signals occurring during the line scanning intervals. During the occurrence of synchronizing signals transistor 45 saturates and the peaks of the synchronizing signals are established at ground potential so that noise pulses on the peaks of the synchronizing signals are also prevented from affecting the scanning generators.
Patent GB-856725-A (GB)
Title: Force transmitting device
IPC: F16H49/00
Filed: 1957-12-13
Abstract: 856,725. Milling-cutter arbors. FREEMAN, H., and SPENDLOVE, E. H. Oct. 22, 1958 [Dec. 13, 1957; April 11, 1958], Nos. 38924/57 and 11604/58. Class 83 (3). [Also in Group XXIV] In a force-transmitting device of piston-andcylinder type, a chamber 20, Fig. 2, having two or more openings closed by pressure-pads 24, 25, which form the force-applying or force-receiving members, is filled with a solid member of rubber, plastic or other material having substantially the properties of a liquid. The pad 24 is actuated through.a ball 23 by a screw 22, and the pad 25, which is of larger diameter, engages a number of push-rods 27 actuating an end-cap 28 which is slidable on the body 19 of the device. The interior of the body 19 is flared, as shown, to connect the small and large-diameter bores therein. In use as a screw-clamp for the cutters on the arbor of a milling-machine, the rods 27 slide in bores in a collar 26, which is secured in the body 19 and has an internal thread for fitting on to the arbor so that as the screw 22 is turned, the cap 28 is forced against the spacing collars abutting the cutters. In a modification, Fig. 4 (not shown), the interior of the body 19 is shaped to provide four smalldiameter axial passages opening into the bore containing the pad 25, each passage having a separate screw-actuated pressure-pad. By screwing-up the four screws, the pad 25 may thus be moved through four times the distance of the Fig. 2 arrangement. In a further modification, each rod 27, Fig. 6, engages a pad 56 engaging one of four rubber or like members 54, which themselves engage a common rubber or like member 53 engaged by a screw-actuated pad 52. The actuating-screws shown may be replaced by screwed flanged rings. The Specification also describes an arrangement wherein a rubber or like member separates two equaldiameter pressure-pads mounted in a cylindrical casing, Fig. 1 (not shown), and an arrangement wherein a rubber or like member 40, Fig. 3, extending between two coaxial pressure-pads 34, 35, of different diameters, is engaged laterally by a second rubber or like member 39 in a transverse bore containing an actuating pressure-pad 33. According to the second Provisional Specification the rubber or like member may be replaced by oil.
Patent GB-1126467-A (GB)
Title: Improvements in or relating to turbines
Inventor: RIZK WAHEEB
IPC: F01D25/14
Filed: 1964-09-24
Abstract: 1,126,467. Turbines. ENGLISH ELECTRIC CO. Ltd. Sept.24, 1965 [Sept. 24, 19641, No. 38974/64. Headings FIG and F1T. In a gas turbine the stator blades 11, 13, Fig. 1, are supported in circumferential channels 65, 73. Cooling air is delivered via a conduit 59, chamber 60, passages 63, Figs. 1 and 3, circumferential groove 70, the spaces between the corrugations of a corrugated ring 66, and around the ends of an aluminium foil lagging 69 to the channel 65. Cooling air is similarly delivered to the channel 73. Air emerges from the channel 65 into the main stream, through a gap between a flange 28 and blade platforms 29 to provide a cooling film over the upstream and inner surfaces of the platforms and over a shroud ring 27. Additionally, air from the passages 63 emerges into the main stream through a cooling space enclosed by a sheet metal cover 71. Air emerges from the channel 73 along the upstream and downstream faces of platforms 49 and flows over the inner surfaces of the platforms 49 and a shroud ring 47.