baber/WOPTO huggingface dataset:
Patent GB-1179567-A (GB)
Title: Improvements in or relating to Power Controllers
IPC: H02P7/295
Filed: 1967-02-03
Abstract: 1,179,567. Rectifying; control of D.C. motors. HEBERLEIN & CO. A.G. 3 Feb., 1967 [3 Feb., 1966], No. 5398/67. Headings H2F and H2J. [Also in Division G3] A circuit for controlling the supply of power to a series motor 16 comprises a thyratron or thyristor 1, the control electrode of which is connected to a capacitor 8. The capacitor is charged during each cycle in two steps, the charging rate during the first step being greater than that during the second step, the potential at which the charging rate changes being controlled in dependence on motor load so that the speed remains constant. As described, capacitor 8 charges rapidly at the beginning of each positive half-cycle of the A.C. supply at 3 until the voltage at the junction of resistors 13, 14 becomes sufficient to turn on transistor 12, when diode 11 becomes non-conductive. The charge continues at a lower rate dependent on the setting of variable resistor 7 until a breakdown diode or neon tube 9 breaks down, triggering thyristor 1 which passes current for the remainder of the positive half-cycle. Resistor 17 in series with the motor 16, diode 18 and capacitor 19 provide a compensating circuit which results in the speed/torque characteristic of the series motor 16 becoming similar to that of a shunt motor.
Patent GB-928435-A (GB)
Title: Apparatus and methods for the treatment of wire
Inventor: HEBARD HUGH CHARLES
IPC: B21C47/26
Filed: 1961-02-14
Abstract: 928,435. Metals cleaning, pickling and coating; wire; heat treatment of metals. BRITISH OXYGEN CO. Ltd. Feb. 13, 1962 [Feb. 14, 1961], No. 5426/61. Classes 72 and 82. [Also in Group XXII] Apparatus for continuously passing wire through a treatment zone comprising winding the wire 27 on to a tapered drum 15, arranging for each coil of wire on the drum to travel down the drum in succession so as to slide off on to a cage 18; causing the wire to travel down the cage, subjecting the wire to the desired treatment while travelling down the cage in the enclosure 32, and continuously withdrawing wire from the cage after treatment. The wire is presented to the tapered drum at the larger diameter, and leaves the cage over idling wire guide pulleys 22 and 23 to be drawn through a pair of driven rolls 33 as the cage 18 revolves. In particular, the wire is immersed in liquid solutions in the treatment zone as for example solutions chosen to effect degreasing, acid pickling, or surface coating of the wire; enclosure 32 is then a tank positioned so that the wire on cage 18 is completely below the surface of the liquid. Alternatively the wire could be subjected to heat-treatment with the cage inserted in a small oven.
Patent GB-286266-A (GB)
Title: Oil-break switch with resistance
IPC: H01H33/16
Filed: 1928-02-21
Abstract: 286,266. Maschinenfabrik Oerlikon. March 2, 1927, [Convention date]. Oil switches; sparking, preventing. - The resistance b in connection with the main contacts c<1> and auxiliary contacts c, of an oil switch is mounted around and supported by the lower end of the lead-in insulator immersed in the oil so that the resistance does not project beyond the insulator.
Patent GB-654682-A (GB)
Title: Railway truck device
IPC: B61F3/08
Filed: 1948-02-24
Abstract: 654,682. Railway-vehicle underframes. GENERAL STEEL CASTINGS CORPORATION. Feb. 24, 1948, Nos. 5471 and 5472. Convention dates, Sept. 16, 1938 and Nov. 3, 1938. [Class 103(vi)] A railway truck device for connecting relatively movable truck parts, includes an elongated rigid force-transmitting member provided with a pad of rubber-like material at one end at least, and means for compressing said pad between said member and one truck part so as to transmit, from one truck part to the other, forces exerted longitudinally of said member, and to accommodate movement between said parts in a direction transversely of said member. The truck, which may be of the four- or six-wheel type, comprises a frame 7 mounted on wheels 2 and axles 3 and provided with transoms 9 from which the bolster 13 is suspended by vertical swing- ing links, not shown. To eliminate excessive relative movement and rattle between various parts of the truck, tie rods such as shown at 14, 15 connect the axle boxes 4 to the frame 7 and the frame 7 to the bolster 13 or connect the axle boxes directly to the bolster 13. Each tie rod comprises a central portion 16, Fig. 6, provided with abutment shoulders 17 for loose collars 18. Each end portion of the tie rod passes through an aperture in the flange of the bracket integrally formed on or bolted to the appropriate truck part, the flange being sandwiched between two rubber discs 20 clamped together by the outer threaded collar 18. To restrict sliding movement between the rubber discs and the bracket flanges in a plane transverse to the axis of the rod the interengaging faces of the discs and the flange are made concavo-convex. In an alternative arrangement, Fig. 13 (not shown), the tie rod comprises a tubular member having discs equivalent to the inner collars 18 welded thereto and a threaded rod passed through the tubular member, collars and rubber discs and secured by nuts and locknuts at each end.
Patent GB-677930-A (GB)
Title: Improved mountings for apparatus for having optical and electrical elements
IPC: G03B17/56
Filed: 1950-03-03
Abstract: 677,930. Kinematograph apparatus. DEBRIE, A. V. L. C. March 3, 1950 [April 7, 1949], No. 5497/50. Class 97 (i). [Also in Group XXXVI] The apparatus has a housing with a cylindrically shaped shoe fitting in a cradle in a base, whereby by movement of the shoe in the cradle the optical axis can be inclined, contact strips on the shoe and fingers projecting through the cradle providing electrical connections between electrical elements in the housing and other electrical elements in the base which is formed of two hollow parts with an intermediate plate for mounting the said other elements. In the form shown the projector 7 carries a shoe 6 with skids 5 engaging runners 4 in a cradle 2 on the base 1. The projector is locked by latch members 9 at both sides of the shoe 6 bent inwardly to engage the upper faces of the skids 5 when pulled down by cams 13 on a common rotatable shaft 14. A split collar 35 below the base, may be clamped to a tripod by a screw 38. The bottom of the shoe 6 is of insulating material in which are embedded the contact strips engaged by the resilient fingers 22. The components 19, 19<SP>1</SP> of an associated amplifier are mounted on the plate 21 between the two parts of the base secured by bolts 29 which also carry rubber feet 33. Spacing members 34 are secured to the plate 21 to support it when removed. The amplifier connections are made through pairs of resilient fingers 25, 26.
Patent GB-1524442-A (GB)
Title: Apparatus for use in fedding animals
IPC: A01K5/02
Filed: 1976-02-12
Abstract: 1524442 Feeding animals FUNKI MASKINFABRIK AS 12 Feb 1976 [24 Feb 1975] 05506/76 Heading AIM Animal feeding apparatus comprises a feeding trough 8 supplied with dry fodder from a container 1 and with water from a tank 9 at timed intervals, the trough having guard doors 21, 22 opened at timed intervals to give animals access to the trough. Supply of feed to the trough is controlled by a shutter 3, supply of water is controlled by a valve 17, and the doors are linked and controlled by a rod 27. The controls are interconnected and operate in a determined sequence at determined hours. Fodder is supplied to the container 1 by a chain conveyor (not shown), the maximum amount in the container being determined by adjustable telescopic tubes projecting into the container from the conveyor. The water tank has a float-controlled inlet valve 12.
Patent GB-490912-A (GB)
Title: A device for drying intaglio-printed paper webs
IPC: B41F23/04
Filed: 1938-02-22
Abstract: 490,912. Drying printed paper webs. MASCHINENFABRIK AUGSBURG-NURNBERG AKT.-GES. Feb. 22, 1938, No. 5608. Convention date, March 10, 1937. [Class 34 (i)] [Also in Group XVI] In means for drying printed paper webs, in which air is passed under pressure through a long and narrow channel formed by a member 3 over the web 1, which forms the bottom of the channel and is shown as passing over a feed drum 2, a partition 6 is inserted at the exit end of the channel, forming with the member 3 at the exit tube 5 a nozzle 7, whereby drying air containing solvent vapours is prevented from escaping through the exit slot 9 for the web by an injector action.
Patent GB-1179726-A (GB)
Title: Closure for Intravenous Fluids Bottle
IPC: B65D51/00
Filed: 1967-02-07
Abstract: 1,179,726. Container closures. MERCO TYRE & RUBBER CO. PTY. Ltd. 7 Feb., 1967 [16 Feb., 1966], No. 5737/67. Heading B8T. A closure for an intravenous fluids bottle comprises a pierceable resilient disc 9 with at least two shallow cavities 14, which may be tubular, as shown, or saucer-shaped, leaving easily pierceable diaphragms 15, and an opencentre clamping sleeve 12 screwed on to the bottle neck 10. In a modification, Fig. 3 (not shown), a locating projection on the inner side of the disc is provided to lie within the bottle neck. Also, Figs. 5-8 (not shown), an extra cavity (18) may be provided, opening to the lower face of the disc.
Patent GB-724432-A (GB)
Title: Improvements in and relating to rotary impact tools
IPC: B25B21/02
Filed: 1953-03-02
Abstract: 724,432. Brush-gear for electric motors. MILLERS FALLS CO. March 2, 1953 [Feb. 28, 1952], No. 5804/53. Class 35. [Also in Groups XXII and XXXVI] The end cover 5 of an electrically driven impact wrench (see Group XXII) is rotatable on the body 4 and is connected by a projection 15 to a brushholder 17 that also carries the movable contacts 19 of a rotary reversing switch 19, 33, so that operation of the switch also moves the brushes into the commutating plane most efficient for the particular rotation of the driving motor.
Patent GB-749291-A (GB)
Title: Improvements in rotary printing machines
IPC: B41F13/30
Filed: 1954-02-26
Abstract: 749,291. Rotary printing machines; feeding webs. MANUFACTURE DE MACHINES MODERNES. Feb. 26, 1954 [Feb. 27, 1953], No. 5816/54. Classes 100 (1) and 100 (2). In a rotary web printing machine, e.g. comprising a number of intaglio printing units for multi-colour printing in which each impression cylinder 10 is movable towards and away from the coacting printing cylinder 3, correct registration of the web outside each unit is maintained by the provision of an assembly 18 movable with the impression cylinder, the web passing over rollers on the frame 1 of the unit and on the movable assembly, the rollers being disposed so that there are an even number of parallel paths for the web between the movable assembly and the fixed frame so that variations in the length of these paths, as the impression cylinder and the assembly are moved, are equal and opposite and there is consequently no change in the length of the web in each unit. In the form shown, the impression cylinder 10 is mounted in slide members 11 connected to screwed rods 13, threadedly engaged in toothed gear-wheels 14. The wheels 14 mesh with worm gears 15 mounted on a shaft 16 rotatable by a handle 17 to raise and lower the impression cylinder. Frame members 18<SP>1</SP>, joined by crossbars 22, forming the assembly 18 are connected at the upper end to the screwed rods 13 and vertically guided at their lower ends by rollers 19 engaging bearing plates 21 on the machine frame. The web 7 for printing is led in under a roller 8 round roller 9 fixed to the machine frame, round rollers 23, 24 and 25 on the movable assembly and round stationary roller 26. The web paths 7a and 7b, between stationary roller 9 and movable roller 23 and between movable roller 25 and stationary roller 26, are parallel and vary in length equally and oppositely during movement of the impression cylinder so that the total length of web between fixed rollers 8 and 26 remains constant. This avoids changes of tension and position in those parts of the web which are passing through other units.
Patent GB-248405-A (GB)
Title: A method of producing stencils
IPC: B05C17/06
Filed: 1926-03-02
Abstract: 248,405. Theobald, P. March 2, 1925, [Convention date]. Stencils.-Stencils are produced by placing a master stencil on a sheet of paper or the like and removing the exposed parts of the blank by brushing or equivalent mechanical means. The master stencil may consist of two similar stencil plates hinged together, the sheet being placed between the plates and treated on both sides. The pattern in the master stencil is preferably pricked out with a needle so as to form sharp ridges at the edges of the apertures therein. The Specification as open to inspection under Sect. 91 (3) (a) comprises also a process of removing an acid-resisting coating from the exposed parts of a sheet and subsequently treating with acid. This subject-matter does not appear in the Specification as accepted.
Patent GB-575594-A (GB)
Title: Improvements in or relating to frequency meters
IPC: G01R23/02
Filed: 1944-03-29
Abstract: 575,594. Frequency measurements. COMPAGNIA PARA LA FABRICACION DE CONTADORES Y MATERIAL INDUSTRIAL SOC. ANON., and VITEAU, P. March 29, 1944, No. 5793. [Class 37] A frequency meter has two ranges of measurement, one according to a double resonance connection and another according to an antiresonant connection, the same frequencysensitive elements being employed in both connections by grouping the condensers and inductances of the first connection in parallel to obtain the condenser and inductance of the second. Two fixed coils 13, 13<1> co-operate with a movable system comprising a wound double frame 15 and an iron bar 16, both fixed on the spindle 17. Condensers 11, 11<1> and inductances 12, 12<1> are connected as shown to a multiple switch 34 operated by an electromagnet 35. The scale 33 of the instrument has a lower scale for high-sensitivity measurement graduated from 49.5 to 50.5 cycles per second and an upper scale for lower-sensitivity measurement graduated from 35.5 to 49.5 cycles per second. The deflection of the movable system is reversed on change of sensitivity so that the two scales are graduated in opposite directions and have a common limit of 49.5. In the position shown the frequency has fallen to 49.5 and the pointer 36 has closed contacts 37 so that the electromagnet 35 has changed over the switch 34 from the high-sensitivity to the low-sensitivity position shown. A maintenance relay 38 is also excited and a pilot lamp 39 lights up. In this position of the switch 34 the condensers 11, 11<1> are in parallel with one another and in series with the coil 13 and the movable coil 15 across the mains U. The inductances 12, 12<1> are in parallel and in series with the coil 13<1> and movable coil 15 across the mains. The closed circuit 13, 13<1>, 12, 12<1>. 11, 11<1> is tuned to the Nominal frequency of the apparatus. With the switch 34 in the other position the coil 13 is in series with the inductance 12 and condenser 11 and is tuned to a lower frequency than the nominal. The coil 13<1> is in series with the inductance 121 and condenser 11<1> and is tuned to a higher frequency than the nominal. The moving coil 15 is traversed by the sum of the currents in these two circuits. When the frequency resumes its normal value of 50 cycles per second, the return to the range 49.5-50.5 is obtained by operating a switch 40 in order to break the circuit of the maintenance relay 38. Alternatively the range-changing may be automatic in both directions.
Patent GB-837245-A (GB)
Title: Multi-barrel lock
Inventor: STACKHOUSE WELLS
IPC: E05B67/24
Filed: 1958-02-25
Abstract: 837,245. Key locks. AMERICAN LOCKER CO. Inc. Feb. 25, 1958, No. 6002/58. Class 44 In a lock, for example a padlock, Fig. 2, having a shackle 18 which is held in the locked position by a spring-loaded latch 22, a casing 10 houses a primary barrel lock 25 and a secondary barrel lock 32, and the barrel 34 of the latter has mounted thereon a disc shutter 40 which covers the key slot of the lock 25 when the lock 32 is in the locked position. The barrel locks 25, 32 are so interconnected that upon rotation of the barrel 34 in one direction the key slot of the lock 25 is uncovered by an opening in the shutter 40 being aligned therewith, and upon insertion therein of the appropriate key and rotation of the barrel 34 in the other direction the shutter 40 again covers the said key slot and the lock 25 is operated to release the latch 22. The interconnection between the locks 25, 32 is by a link 46, Fig. 5, pivoted at one end 47 to an arm 48 extending from the barrel 34 and having its other end slotted at 50 to receive a pivot pin 52 of an arm 54 extending from the barrel 26 of the lock 25. The slot allows rotation of the barrel 34 in the said one direction, and the link end 47 passes over a dead-centre position to prevent the lock 26 from being operated by the key, the insertion therein of which allows the barrel 34 to be rotated in the other direction. The barrel 26, 34 of the locks 25, 32 each has a plate fixed to its inner end and recessed for co-operation with a fixed pin to limit the rotation of the barrels in both directions. The locks are normally locked against rotation by longitudinal and radial key releasable tumblers, Fig. 12 (not shown). Either or both barrels 26, 34 may be provided with meter recording mechanism 70 for registering the rotation of the barrels. In a modification, Fig. 10 (not shown), permitting the use of the two keys for the locks 25, 32, respectively, when they are attached to the ends of a lanyard, the casing 10 and the shutter 40 are slotted to permit passage of the lanyard when the keys are inserted in their respective slots.
Patent GB-544536-A (GB)
Title: Improvements relating to chairs
IPC: A47C13/00
Filed: 1941-05-13
Abstract: 544,536. Furniture combinations. AMBERTON, R. May 13, 1941. No. 6150. [Class 52 (iii)] A chair is provided with a top rail c shaped to serve as a coat hanger, circular rail d on which other garments may be hung and the space below the seat enclosed to form a cupboard provided with a door p. The corners may be strengthened by sheet metal brackets r, Fig. 4, having a horizontal turned over edge s in contact with the lower surface of the seat f and a vertical edge t flush with one of the legs g and secured by lugs u, v secured to the leg and seat respectively.
Patent GB-941064-A (GB)
Title: Emulsion copolymers and methods of preparation thereof
IPC: C08F2/22
Filed: 1960-02-22
Abstract: 941,064. Polyvinyl acetate graft copolymers. ROHM & HAAS CO. Feb. 22, 1960 [Feb. 26, 1959], No. 6152/60. Heading C3G. Graft copolymers consisting of polyvinyl acetate to which is grafted at least one C 1 -C 1  8  ester of acrylic or methacrylic acid, the proportion of polyvinyl acetate being from 5 to 25% by weight of the copolymer, are obtained by polymerizing vinyl acetate in an aqueous medium in the presence of an emulsifier and a free-radical initiator to form an aqueous dispersion of polyvinyl acetate, adding to the dispersion while the polymer is still in the active state an additional quantity of emulsifier, from 3 to 19 times the weight of the polyvinyl acetate of one or more C 1 -C 18  esters of acrylic or methacrylic acid and from 1 to 6% by weight, based on the weight of polyvinyl acetate and the ester monomer, of a 75% to 95% hydrolyzed polyvinyl acetate, and polymerizing the added ester monomer, in the presence of additional initiator, if needed. The added ester monomers may contain up to 5% of other monomers, such as styrene, vinyl toluene, ethylene, isobutylene, acrylonitrile, methacrylonitrile, acrylic, methacrylic, itaconic, maleic, fumaric and citraconic acids, acrylamide, methacrylamide, hydroxyalkyl and aminoalkyl acrylates and methacrylates, vinyl and vinylidene chlorides, vinyl acetate, hydroxyalkyl vinyl sulphides and vinyl ethers. To the resulting graft copolymer dispersions there may be added thickeners, e.g. casein, tragacanth, alginates, water-soluble cellulose derivatives and salts of polymers and copolymers of unsaturated acids, and pigments, e.g. titanium dioxide, titanates, zinc sulphides, lithopones, zinc oxide, antimony oxide and organic colouring matters. The examples describe the preparation of graft copolymers of polyvinyl acetate and mixtures of methyl methacrylate with ethyl acrylate or 2- ethylhexyl acrylate. The resulting graft copolymer dispersions are thickened and pigmented, and used as paints.
Patent GB-572098-A (GB)
Title: Improvements in centreless grinding machines
IPC: B24B5/38
Filed: 1944-04-03
Abstract: 572,098. Centreless grinders. CHURCHILL MACHINE TOOL CO., Ltd., and LONGTHORPE, H. April 3, 1944, No. 6181. '[Class 60] In a centreless grinding machine for treating work in bar form, means is provided for supporting the work as it is fed into and passes out of the grinding throat. The work d, during grinding, is supported on the inclined upper surface of a rest e lying between the grinding-wheel f and the control wheel g and forming with the operative surfaces of the wheels, the grinding throat. The means for supporting the work outside the grinding throat comprises a series of pairs of rollers a, b with bevelled faces, the axes of the rollers being set so that a V-throat is formed, as shown by the dotted lines c, and the lower roller a of each pair being set so that its work-engaging line is parallel to the work-engaging surface of the rest e. The upper roller b is set so that its work-engaging line coincides substantially with the contour of the control wheel g where it engages the work, and the rollers b are carried on a base h which moves with the control wheel head slide, the control wheel being adjustable into line with the roller faces as described above. The rollers a and the blade e are mounted on a platform i slidable by rack gearing i<1> on the base h at an angle to maintain the V-throat angle c when the rollers are adjusted to suit the diameter of the work d ; the outer ends of the base h are supported by rollers on members j. In machines having the grinding- wheel, or the grinding and control wheels adjustable, the base h is mounted accordingly.
Patent GB-771023-A (GB)
Title: Process and apparatus for the production of reinforced bodies of light-weight concrete or similar material
IPC: E04C5/16
Filed: 1955-03-02
Abstract: 771,023. Reinforced concrete. INTERNATIONAL YTONG-STABALITE CO., Ltd. March 2, 1955 [March 19, 1954; July 30, 1954], No. 6194/55. Class 20(4) A device for positioning a cage-like reinforcement for concrete consisting of U-shaped members 24 (Fig. 1) having welded thereto longitudinal members 25 comprises a two part frame 11, the upper part 13 of which is removed from the mould when the concrete has set sufficiently to hold the reinforcement in position, the lower part 12 of the frame 11 being removable when the concrete part is removed from the mould. The lower part 12 consists of a 'thin flat bar having projections 14 with grooves to receive the lower ends of the U-shaped members 24 and at each end an upstanding lug 15 which enables the lower part of the frame to be secured to the upper part 13 by pins 18 as shown in Fig. 2. The upper part 13 comprises a tube 16 to which two side bars 17 with slotted ends are welded. The tube 16 is provided with a number of tubular guide members 19 which extend through the tube 16 and are held down by helical springs 20. The free ends of the U-shaped members 24 are received in the lower ends of the guide members 19. In use the reinforcement 'and the positioning devices are assembled and lifted into the mould and the pins 18 holding the two parts of the frame 11 together are removed before the concrete is cast in the mould.