baber/WOPTO huggingface dataset:
Patent GB-523115-A (GB)
Title: Improvements in or relating to castors, and to wheel and like attachments
IPC: B60B33/04
Filed: 1938-12-23
Abstract: 523,115. Furniture castors. MAWBY, R., and HOLT, A. C., [trading as HOMA ENGINEERING CO.]. Dec. 23, 1938, No. 37436. [Class 52 (i)] [Also in Group XXXII] A compression spring 4, preferably of the volute type, is fitted to extend horizontally between a wall 10 of a recess formed in the swivelling fork 8 and the wall 12 of a similar recess in a forked lever 6 which carries the wheel 2 and is pivoted at 27 in the swivelling fork. The big end of the spring may be anchored by a screw 14 passing through a loop 13, Fig. 5, and the small end by a screw 16 engaging a bush expanded to the eye of the spring. The swivelling fork may be fitted with locking means as described in Specification 523,114, [Group XXXII]. It is stated that the spring arrangement may be applied to non-swivelling wheels.
Patent GB-1190408-A (GB)
Title: Process for the Preparation of Bis-(pi-Allylic) Nickel Compounds
IPC: C07F15/04
Filed: 1967-08-15
Abstract: 1,190,408. Bis-#-allyl nickel compounds. STUDIENGESELLSCHAFT KOHLE m.b.H. 15 Aug., 1967 [16 Aug., 1966; 2 Aug., 1967], No. 37484/67. Heading C2J. Bis-#-allylic-nickel compounds are prepared at a temperature between -80‹ C. and +100‹ C. by disproportionation of #-allyl-nickel-X compounds, where X is a halogen, or a complex ion of a halogen atom and a Lewis acid, or an enolate ion of a 1,3-diketone, or a carboxylate ion of an organic acid, or an alcoholate group. The disproportionating agent, which is used in excess, may be a primary, secondary, or tertiary amine, an imine, or a compound containing a hydroxyl group, as listed in the Specification. The #-allylic group referred to may be an unsubstituted ally] group, or one in which some or all of the H atoms are replaced by alkyl, cycloalkyl, alkenyl, cycloalkenyl, aralkyl, or aryl radicals, of which a specific list is given. The reaction may be carried out in solution in various ethers and hydrocarbons as listed, or without a solvent, e.g. in liquid ammonia. Separation of the bis-#-allylic-nickel compounds from the solvent and NiX 2  complexes is described in the examples.
Patent GB-894728-A (GB)
Title: Improvements relating to link couplings
Inventor: SHAND THOMAS GEORGE
IPC: F16G11/00
Filed: 1959-11-05
Abstract: 894,728. Hooks. BARROW HEPBURN & GALE Ltd. Nov. 5, 1959, No. 37630/59. Class 89(2). A hook 3, e.g. of a safety-belt, is engaged by an eye 2 in one end of a rope 1 and retained by a bridge 6 of nylon or other material permanently secured to the hook after assembly of the eye thereon. To mount the bridge, it is softened by heating to enable it to be fitted and then cooled while expanded against the hook.
Patent GB-869890-A (GB)
Title: Improvements in and relating to heat exchange rolls
Inventor: COUDRIET EDWARD AMBROSE
IPC: B41F23/04
Filed: 1957-12-03
Abstract: 869,890. Hollow rollers; drier rolls. INTA-ROTO MACHINE CO. Inc. Dec. 3, 1957, No. 37661/57. Class 34(1) A roller 120 for heat-exchange processes comprises two separate helical fluid flow paths associated with its periphery, the fluid flow in the paths being in opposite rotational directions. Fluid is supplied through a counterbore 138 of each stub axle 128 to a flow path and is discharged from the roller through a pipe 140 in the opposite axle.
Patent GB-921490-A (GB)
Title: Improvements in or relating to balances for fine weighing
Inventor: CHAPPELL FRANK ARTHUR
IPC: G01G23/32
Filed: 1960-11-04
Abstract: 921,490. Electric selective signalling systems. L. OERTLING Ltd. Nov. 6, 1961 [Nov. 4, 1960], No. 38050/60. Class 40 (1). In a weighing arrangement, Fig. 1, a first defraction grating 22 is attached to a pan support 15, pivoted so as to remain vertical, a second defraction grating 18 is fixed in front of a light source 19, 21, and the Moire fringes produced as the balance beam moves are counted to effect fine weighing. In operation the unknown weight is placed in the left-hand pan and approximately balanced by weights on the right-hand pan. After the beam has come to rest in its equilibrium position it is moved back to its horizontal position, by means not shown, and the Moire fringes produced during this movement are detected by a photo-cell 24 and counted. Arrival of the beam in its horizontal position is detected by a further photo-electric cell 28 whose output is used to stop the counting. In order to maintain the distance between the two gratings constant a cylindrical defraction grating rigidly fixed to the balance beam could be used in place of the flat grating attached to the pan support, or alternatively, the planes of the gratings could be arranged to be parallel to the plane in which the beam moves (Fig. 5, not shown).
Patent GB-1267573-A (GB)
Title: Improvements in or relating to multistage switching networks
IPC: H04Q3/52
Filed: 1969-07-30
Abstract: 1,267,573. Semi-conductor switching circuit. SIEMENS A.G. 30 July, 1969 [31 July, 1968], No. 38154/69. Headings H3T and H4K. A connection path between a selected pair of terminals K1, K2 of a plurality (not shown) is established by at least two electronic switches H1, H2 such as SCRs or PNPN diodes which are supplied, once the path is established, with an operating direct current higher than the minimum holding current necessary, from a battery U through a choke L; and a limiter circuit D is connected to an intermediate line Z between the switches H1, H2 to hold it within a fixed potential range. The higher D.C. level ensures that an A.C. signal from K1 does not, when added to the D.C., cause the total current to fall far enough to turn off a switch by mistake. The minimum voltage level maintained at Z ensures that a fall in the total voltage of the path does not cause any switch to turn off; the maximum voltage level ensures that no switch gives a false connection due to an excessive voltage on the path. The voltage range of the limiter is narrow enough to prevent false switch closure due to steeper than average triggering signals which could operate the switches even with a lower voltage applied. The limiter, which may be a Zener diode in series with a battery (Fig. 2, not shown) or a parallel pair of oppositely poled diodes having respective batteries (Fig. 3, not shown), may supply a supplementary current to compensate for failure of the battery U or to make up for temporary drops in current flow in the path which might cause false switch dropout. Such temporary drops might arise from the initial build up of current from U being slowed by the choke L, or during step-by-step switching in which a first section of the connection path, say H1, is completed and carries current from U, and then a second section, say H2, is completed and loads the battery causing a temporary drop in the current in H1 which by this stage may have lost its trigger input and be liable to false drop-out. Diode limiters D1, D2 are also provided at the terminals K1, K2, together with respective batteries.
Patent GB-1187650-A (GB)
Title: Wheelguard
Inventor: BESTWICK JAMES
IPC: B60S5/04
Filed: 1967-08-18
Abstract: 1,187,650. Machinery guards. J. BESTWICK. 31 July, 1968 [18 Aug., 1967], No. 38173/67. Heading F2J. A wheel guard for use when inflating pneumatic tyres comprises two rectangular shield members 11, 12 having cross-bars 13 forming apertures therein, the shield member 11 being located in a fixed position and shield member 12 being adjustably positioned in spaced relationship therewith by corner members 17 of rectangular section having telescopic engagement with open-ended members of the framework of shield member 11. Pins 19 engaging holes 20 locate the members in their adjusted positions. A hinged platform for the operators may be provided in a space 21 and secured to the surrounding framework. A tyre may be disposed between the shields 11, 12 for inflation when detached from a vehicle. When a tyre is being inflated when attached to a vehicle, the two shield members may be located close together and positioned between the operator and the tyre for protection.
Patent GB-303853-A (GB)
Title: Viscosimeter
IPC: G01N11/14
Filed: 1928-12-28
Abstract: 303,853. I. G. Farbenindustrie Akt.- Ges. Jan. 11, 1928, [Convention date]. Testing and measuring viscosity of liquids. -Relates to viscosimeters in which the resistance to a body d rotating in a liquid is measured and consists in mounting the body d in an overhung spindle by means of a needle point and cup bearing s, h, the lateral pull of a thread by which the body is rotated being taken up by the needle point. In a modification the needle point is arranged at the middle point of the roller to which the pull of the thread is transmitted. All parts affecting the friction of the apparatus are made from polished stainless steel. In the second form the spindle is provided with a disc which is drawn upwards towards a vacuum chamber, in a similar manner to the drum of Fig. 1, so that the needle is correctly seated in the bearing.
Patent GB-1048239-A (GB)
Title: Improvements in or relating to brake operating mechanisms
Inventor: SCRIVENER EDWARD WILLIAM ARTHU
IPC: F16D65/22
Filed: 1964-09-21
Abstract: 1,048,239. Brake linkage. SECRETARY OF STATE FOR DEFENCE. Aug. 13, 1965 [Sept. 21, 1964], No. 38360/64. Heading F2E. In brake transmitting mechanism including a sprocket wheel or pulley 4 which transmits a brake-applying force, supplied, e.g. by a hand lever having a pawl engaging a ratchetwheel 5 integral with the wheel or pulley 4, to a brake-applying means through a chain or cable engaged with the wheel or pulley, rotation of the wheel or pulley 4 in the brakerelease direction is restrained to avoid excessive paying-out of the chain or cable. This is effected by a braking device for the shaft 2 carrying the wheel or pulley 4, the device comprising centrifugally-operating brake blocks 12 guided for bodily radial movement in carrier 8 secured to the shaft 2, whereby upon rapid rotation of the wheel or pulley 4 the blocks engage a stationary drum 7 to retard the rotation of the shaft so that excessive paying- out of the chain or cable is prevented. Alternatively, the device may comprise pads applied externally to the drum by a centrifugal weight acting via a bell-crank lever eccentrically mounted on a rotating disc.
Patent GB-627734-A (GB)
Title: Improvements in or connected with machines or apparatus for heating and planing-off worn road or other surfaces
IPC: E01C23/082
Filed: 1948-02-05
Abstract: 627,734. Road &c. making machines. ROBEY & CO., Ltd., BRETHERTON, F. J., and TILBURY CONTRACTING & DREDGING CO., Ltd. Feb. 5, 1948, No. 384/47 [Class 107] At the forward end of a machine for planing off worn road or like surfaces is mounted a heater 9, the deflector 10 of which causes the heat to impinge on the road surface. Scraper blades 16, arranged at an angle to each other collect the heated material and discharge it through a space between the rear ends of the blades which overlap. A curb fender 30 is fitted to the machine. Specification 591,436 is referred to.
Patent GB-975454-A (GB)
Title: Isoprene production
IPC: C07C2/30
Filed: 1960-11-09
Abstract: Isoprene is obtained by dimerizing propylene to 2-methylpentene-1 in the presence of a catalyst of the formula Me(R)n, where Me is aluminium, gallium, indium or beryllium of valency n and R is hydrogen, alkyl or aryl, and cracking the 2-methylpentene-1 in the presence of bromine or a bromine-producing compound. The dimerization is preferably effected with an aluminium trialkyl at 100-350 DEG  C. and 0-5000 p.s.i.g.  The cracking is effected at 300-1000 DEG  C., 10 mm. Hg to 500 p.s.i.g. using 0.5-50% mol. of bromine based on hexane in the presence of 0.5-15 mols. of diluent per mol. of hexene. Bromine may be supplied per se or as ethyl bromide, 2-bromopropane, 1-bromobutene, 1-bromopropane, alpha-bromotoluene, bromobenzene, 1,2-dibromoethane, ammonium bromide or hydrogen bromide.  The diluent may be a hydrocarbon or water.  Reference has been directed by the Comptroller to Specifications 831,249 and 868,566.
Patent GB-1072005-A (GB)
Title: Improvements in and relating to the insulation of roofs
IPC: E04B1/76
Filed: 1965-09-09
Abstract: 1,072,005. Roof lining; expanded polysty. rene strip. INSULATIONS Ltd. and H. S. WOOD. Sept. 9, 1965 [Dec. 4, 1964], No. 38493/65. Headings E1K and E1W. A roof lining comprises one-or, (as shown), two-piece strips 13, 13' of expanded polystyrene stuck to the roof support members 15 and having edge grooves supporting the ends of expanded polystyrene sheets 17. The twopiece strip 13, 13' may have a tongue-andgroove connection 16, and an alternative shape of strip has a simple vertically arranged longitudinal slot (Figs. 1, 4, not shown) by which the strip is fitted to the downwardly projecting flange of an L- or T-sectioned support member, (Fig. 1) or to a downwardly projecting plate 9 fixed to a Z- or [-sectioned support member, (Fig. 4). The expanded polystyrene sheets may have tongue-and-groove interconnections intermediate the support strips.
Patent GB-941947-A (GB)
Title: An improved metal composition and a method of manufacture thereof
IPC: C22C32/00
Filed: 1961-10-27
Abstract: A metal composition for use in the manufacture of resistance welding or spark machining electrodes comprises a pressed, sintered and repressed compact of Cu, Ni, Ag or Al metal powder in which is dispersed 0.05-30 volume per cent of Zr, Cr and/or Ti oxide powder, the oxide particles being oriented in lamina strata. The oxide particles are below 10 microns, preferably 5-10 microns, F.A.P.S. (Fischer Sub Sieve Sizes). The compact is made by forming the mixture of powders, heating in a reducing atmosphere, pressing to form the compact, sintering and repressing, preferably in the same direction as the original pressing, so that the oxide particles are oriented in laminar strata. Specification 917,005 is referred to.
Patent GB-976610-A (GB)
Title: Apparatus for deflecting a beam of light
IPC: G02F1/31
Filed: 1963-10-02
Abstract: 976, 610. Electric selective signalling; read-only memories. INTERNATIONAL BUSINESS MACHINES CORPORATION. Oct. 21, 1963 [Oct. 6, 1962], No. 38730/63. Headings G4A and G4H. In apparatus for deflecting a plane polarised beam of light, a beam of light is polarised in one of two mutually perpendicular planes so that it passes through a birefringent crystal provided either as an ordinary beam or as an extraordinary beam. In Fig. 7, a plane polarised, substantially monochromatic beam is produced by source 1, lens 2, polariser 3 and hole diaphragm 4 and then passed through beam control elements 5, 55, 7, 75, 9 and birefringent crystals 6, 8, 10 arranged in series as shown. Each beam control element is an electrooptic Kerr cell and rotates the plane of polarisation by 90 degrees if a voltage is applied across its two electrodes. The thickness of the crystals 6, 8, 10 are in the ratio 4 : 2 : 1. If the beam control element (e.g. 5) immediately preceding a crystal (6) is energized, the beam passes through the crystal as an extraordinary beam and is accordingly laterally displaced by an amount proportional to the thickness of the crystal: the immediately following beam control element (55) then rotates the plane of polarisation back again, being electrically connected to the preceding beam control element (5). If a preceding beam control element, 5, 7 or 9, is not energized, the beam traverses the following crystal, 6, 8 or 10, as an ordinary beam without lateral displacement. The overall displacement is thus proportional to the three digit binary coded number applied in voltage form to the electrodes of elements 5, 55; 7, 75; 9. Fig. 8 shows two sets of crystals and beam control elements, each as in Fig. 7 but with seven binaryweighted crystals &c. used in series for achieving horizontal and vertical displacement of the beam respectively. The beam is used for storing binary data from a computer in a disc store 600 having photographic plates 601, one of which is moved into position by rotating the disc 600. After developement, the data on a given plate 601 can be read out with the aid of a photo-cell 602 by moving the beamlike a raster. It is mentioned that such an arrangement, using the light of a laser may alternatively be used for recording images or other information on a thermoplastic film or xerographic storage device. It may be used for representing a character in a display unit, or as a character generator for an optical printer. Referring back to Fig. 7, beam control elements 55, 75 may be dispensed with but then the electrical input to the elements 5, 7, 9 will not be pure binary. It is mentioned that by choosing crystal thicknesses and beam control element connections appropriately, any desired code conversion may be performed. If Wollaston or Rochon prisms are employed in place of the crystals 6, 8, 10, the extraordinary beam has a different direction from the ordinary beam when emerging. The beam control elements may alternatively be magneto-optical systems.
Patent GB-1115775-A (GB)
Title: Improvements in or relating to the manufacture of twist-lively yarn
IPC: D02J1/22
Filed: 1965-09-10
Abstract: A twist-lively yarn of a thermoplastic polymer is produced on a drawtwisting machine by causing the twist backed up by the traveller of the ring spindle to run back into a heatsetting zone, with the heat-seat yarn being wound on the spindle at a lower twist level. The heating means may comprise a heated plate, pin, or straight tube. The traveller preferably has a sharp edge to increase the amount of twist backed-up while the yarn may be guided through the traveller, around the edge, and then around the yarn leaving the balloon before reaching the spindle.  The yarn may be a mono-or multi-filament yarn, with the filaments being of non-circular cross-section due to the shape of the spinning orifice, or to the filaments being deformed by pressure rollers or by scraping.
Patent GB-802660-A (GB)
Title: Improvements in or relating to machines adapted for use in assembling electrical components upon workpieces
IPC: H05K13/04
Filed: 1955-06-13
Abstract: 802,660. Assembling electrical components on circuit boards. BRITISH UNITED SHOE MACHINERY CO., Ltd. June 13, 1955 [Sept. 27, 1954], No. 39161/56. Divided out of 802,658. Drawings to Specification. Class 83 (2). A machine for assembling electrical components on workpieces such as circuit boards comprises assembling means arranged to move towards and away from a workpiece at one side thereof and assemble a component on the workpiece and either an anvil device arranged to move towards and away from the workpiece at the opposite side to afford support to the workpiece during the assembly of a component thereon or to clinch portions of the component leads which have been inserted through holes in the workpiece during assembly or, detecting means responsive to the satisfactory assembly of a component and arranged to stop the machine if it has not so responded in an operating cycle of the machine. The machine described is similar to the second illustrative machine described in Specification 802,658. Specification 802,659 is also referred to.
Patent GB-327124-A (GB)
Title: Improvements in or relating to charge forming devices for internal combustion engines
IPC: F02M1/00
Filed: 1928-09-22
Abstract: 327,124. White, A. E., (Delco-Remy Corporation). Sept. 22, 1928. Divided on 327,110. Spray carburettors.- In a charge-forming device, which may be of the type described in Specification 327,107, comprising one or more primary mixture passages with throttle valves therefor, means such as a pump is provided for injecting additional fuel into each mixture passage to enrich the mixture for acceleration, such means becoming effective upon the opening of the throttle or throttles. Three primary mixture passages 61, 62, 63, Fig. 5, are provided and arranged side by side and parallel to one another, and each passage delivers its mixture through a tube such as 70, Fig. 2, into a secondary mixing chamber which may comprise a Venturi tube 175. These secondary mixing chambers are adapted, at certain throttle openings, to receive a supply of additional air through a conduit 81 provided with a valve 94 connected to the throttle 65 controlling the primary passages, and also with a suction-actuated valve 95 pivoted out of centre on a spindle 97. Each of the primary passages has a fuel nozzle such as 42 located in a constricted chamber such as 43. A fuel chamber 27 encloses a float 40 and a dashpot cylinder 25. The bulk of the air supply is admitted by a suction-actuated valve 77, the movements of which are damped by a dashpot consisting of a piston 106 and its cylinder 107. The piston is secured to the stem 86 of the air valve by a flanged member 108 and nut 109, Fig. 4. The cylinder has a bye-pass 113 normally closed at its upper end by the piston, and the lower end of the cylinder is closed by a cover 110 containing a non-return valve 111. A fuel delivery pipe 155, connects the lower end of the cylinder with a channel 156, Figs. 2, 5, which communicates with the primary mixture passages through ducts 158 - - 163, the channel being open to the air through ducts 164, Fig. 2, which prevent suction from drawing fuel into the mixture passages. When the throttle is opened to accelerate, the air valve 77 is drawn downwardly and the piston 106 forces fuel through pipe 155, channel 156, ducts 158 &c. into the mixture passages. This forcing of additional fuel continues until the piston 106 uncovers the upper and of the bye-pass 113, at which point the pressure is released and forcing ceases. Specification 327,123 also is referred to.
Patent GB-393725-A (GB)
IPC: C02F1/16
Abstract: 393,725. Feedmater-supply systems for steam boilers. BABCOCK & WILCOX, Ltd., Babcock House, Farringdon Street, London, and GLINN, R. J., The Cottage, Copse Hill, Purley, Surrey. March 30, 1932, No. 9213. [Class 123 (ii).] In a feedwater heating system for steam generators, blow-down water from a boiler A is delivered to an expansion chamber C from which steam is flashed off and led by a pipe K to the heating coils M of an evaporator E, while the water from the expansion chamber C is led by a pipe 0 to the evaporator ; the condensate of the steam in the coils M and the vapour from the evaporator E are led by pipes T, S to a hot well H or other vessel connected to the condensers J, the condensate from the hot well H being returned to the boiler A by a pump 1. Raw make-up water may be added in the pipe O from a tank F in which a constant level is maintained from a tank G. Condensate from a turbine B is led through condensers J, and a pipe U to the hot well H. Steam bled from the turbine B or other source is led by a pipe N into the pipe K with the steam flashed off from the expansion chamber C to the heating coils M of the evaporator. The expansion chamber has a safety valve D.