baber/WOPTO huggingface dataset:
Patent GB-252238-A (GB)
Title: Improvements relating to apparatus for automatically reclosing electric circuit interrupters
IPC: H01H75/04
Filed: 1925-02-17
Abstract: 252,238. Ross, T. W., and Metropolitan- Vickers Electrical Co., Ltd. Feb. 17, 1925. Electric cut-out arrangements.-In automatically reclosing circuit-breaker apparatus a relay is employed comprising an electric motor which imparts an oscillating movement to a contact blade causing it to engage alternately each of a pair of fixed contacts. As shown in Fig. 2 the relay comprises a motor 50 which drives through gearing a shaft 73 on which is secured a cam 77 imparting oscillations to a contact blade and causing it to engage alternately fixed contacts 80, 79 so closing in succession switches 56, 57. The motor is provided with limit switches for forward and reverse rotations consisting of pivoted bell-cranks 92,84 which are resiliently connected to the pivoted bridging members of the switches 54, 55 controlling the forward and reverse field windings 52, 51. Pins 93, 83 on the levers 92, 84 bear on flanged collars 88, 81 carried by the geared shaft 74, the ping being adapted at the ends of the predetermined motions to drop into slots 89, 82 so producing operation of the corresponding switches. In order to permit adjustment of the limits of forward rotation the collar 88 may be slid back on the shaft against the action of a spring 91 and rotated to bring one of a number of axial slots into register with a pin 90 on the shaft 74. The relay described may be employed in the system shown in Fig. 3 in which a three-phase circuit-breaker 41 - - 43 with overload trip gear is employed. After the circuit-breaker has opened on overload a circuit through the field winding 52 and armature 53 for the forward rotation of the relay motor is completed through back contacts of the circuit-breaker and the limit switch 54 the rotation of the motor producing alternate operation of switches 56 and 57. The closure of switch 56 prepares the reclosing circuit by energizing the relay 70 which completes its own maintaining circuit and the closure of switch 57 completes the re-closure by energization of the actuating-coil 60 of electromagnetic switch 62 and consequent energization of the circuit-breaker reclosing coil 40. If the circuit-breaker remains closed the rotation of the motor is reversed by contacts controlled by the circuit-breaker until the limit switch 55 opens when it has reached its normal position. If however the overload persists during a predetermined number of successive re-closures which take place during continued forward rotation of the motor the forward limit switch 55 is finally opened and the reclosing gear remains inoperative until the motor is restored to its normal position by changing over the manually operated control switch 124. Specifications 208,724 and 209,412 are referred to.
Patent GB-564070-A (GB)
Title: Improved coupling device
IPC: F16J10/02
Filed: 1943-03-18
Abstract: 564,070. Pipe joints. MOORES, C. C: March 18, 1943, No. 4439. [Class 99 (i)] [Also in Group XXVI] A joint for fluid-pressure systems is shown as applied to securing an end cover c on a hydraulic cylinder a, the cylinder and cover having screwthreads of the same hand but of differing pitch. A coupling nut e having two screw-threaded portions engaging the cylinder and cap respectively draws the cylinder end face on to packing f located in a recess in the cap.
Patent GB-110295-A (GB)
Title: Improvements in and relating to Apparatus for Winding-up Metal and other Strips.
Inventor: MENZER JOSEPH GUSTAV
IPC: B21C47/32
Filed: 1917-03-27
Abstract: 110,295. Menzer, J. G. March 27, 1917. Winding webs.-A device for initiating the winding of strip or sheet metal S or the like on a rotating block B comprises an endless belt 25 carried by rollers on a frame 14, one part 20 of which is pivoted so that it can be turned back when it is desired to withdraw the device. The frame 14 is on rollers on a track and carries the weighted roller 32 by means of slotted brackets 16 to tension the belt. The part 20 is operated by a toggle 22 actuated by a hand-lever 23. The device may also be employed to hold the coil when reversing the block B to loosen it.
Patent GB-396460-A (GB)
Title: Apparatus for pumping liquids in the treatment of mineral ores
IPC: B03D1/14
Filed: 1932-02-15
Abstract: 396,460. Reciprocating pumps. GENERAL ELECTRIC CO., Ltd., Magnet House, Kingsway, London, GARDINER, H. W. B. and JACKSON, A. B., c/o General Electric Co., Wembley, Middlesex. Feb. 15, 1932, No. 4468. [Class 102 (i).] A pump for the treatment of mineral ores is provided with means for regulating the delivery stroke whereby some of the liquid is forced back through the inlet valve towards the supply tank. The pump comprises two pistons 8, 9 operating in cylinders 10, 11, the leading piston 8 drawing through an inlet passage 14 and by its movement over the ports controls the delivery through the passage 13 to the follower pump 9, which delivers to the delivery pipe. The pumps are operated off a crank shaft 18 through eccentrics and crank levers 22, 24 pivotally mounted at 20, 25 and having pin blocks 27 engaging yoke ends 28 on the pistons. The case for the actuating gear is separated from the pump chambers by a division plate 29. For the purpose of regulating delivery, the pivot point 25 is on a crank member on the shaft 20 extending through the casing, and displacement of this crank member by an external lever 6 controls the timing of the piston 8 and enables the delivery to be adjusted. The pistons 8, 9 may be made of stainless steel or of ordinary steel coated with a suitable ebonite-like material, whilst the body of the pump 12 may be made of non-corrosive alloy or suitably lined.
Patent GB-634552-A (GB)
Title: Improvements in or relating to current transformers
IPC: H01F38/30
Filed: 1948-02-17
Abstract: 634,552. Transformers. WESTINGHOUSE ELECTRIC INTERNATIONAL CO. Feb. 17, 1948, No. 4609. Convention date, April 30, 1947. [Class 38 (ii)] Phase angle errors are reduced in a current transformer comprising a primary winding 5 and a secondary winding 4 on a common portion of a core 1 by providing magnetic shunts 6, 7 positioned in the space between the primary and secondary windings so that the leakage flux passing between these two windings is guided to return via the core portion not surrounded by the two windings. This causes a greater flux leakage and consequently a greater leakage reactance.
Patent GB-894183-A (GB)
Title: Improvements in or relating to sewing machines
IPC: D05B27/16
Filed: 1961-02-08
Abstract: 894,183. Sewing machines. PFAFF A. G., G.M. Feb. 8, 1961 [Feb. 18, 1960], No. 4650/61. Class 112. In a sewing machine with differentially driven upper and lower work-feeding rollers, a friction or other yielding clutch is incorporated in the drive to the roller which is driven at the higher speed. A lower shaft 2, driven by variable speed gearing 4 carries a feed roller 3 and is connected via a friction coupling 13 to a chain 12 which drives the upper shaft 6. A vertical shaft 8 is supplied by gearing 7 to shaft 6 and by gearing 9 to an upper roller 10 co-operating with roller 3. The gearing is so arranged that roller 10 is driven faster than roller 3. The friction coupling comprises a sprocket 19, for chain 12, freely journalled on shaft 2, and engaged on opposite sides by friction linings 17 carried by discs 14 and 15. Disc 14 is rigid with shaft 2 and disc 15 is slidably and non-rotatably coupled to shaft 2. Spring discs 21 are interposed between disc 15 and a knob 25 screwed on the end of shaft 2 for varying the degree of friction in the coupling.
Patent GB-1126993-A (GB)
Title: Viscosity independent hydraulic flow regulator
Inventor: HARNER KERMIT IVAN
IPC: F15B21/045
Filed: 1967-01-31
Abstract: 1,126,993. Valves; dashpots. UNITED AIRCRAFT CORP. 31 Jan., 1967 [24 Feb., 1966], No. 4676/67. Headings F2S and F2V. [Also in Division G3] A continuously rotating pilot spool 5 controlling the supply of fluid to servomotor 4 is provided with axial grooves 29 spaced circumferentially around one end thereof, these grooves serving to periodically connect chamber 28 with a restricted conduit 31 connected to reservoir 1. When the spool is moved axially, the chamber 28 is connected to conduit 31 for periods less than the time required for the fluid in the latter to achieve a terminal-velocity. In this way, it is suggested that movement of the spool is damped in a manner independent of changes in the viscosity of the fluid. The movement of piston 4 is fed back to spool 5.
Patent GB-564557-A (GB)
Title: Improvements in hydraulic nozzles
IPC: B05B1/32
Filed: 1943-03-23
Abstract: 564,557. Spray-producers. MERRYWEATHER & SONS, Ltd., STUBINGTON, R. E., MILLER, L. C., and BATES, F. W. March 23, 1943, No. 4730. [Class 69 (iii)] A nozzle for fire extinguishing, decontamination, washing and the like comprises a casing A having a rectangular opening C and a plug valve G having a port shaped as shown. The valve G is operated by a handle connected to crank levers H mounted on the ends of the plug valve and the handle. is arranged so that in position of rest against the part B the plug valve is in the wide open position. Movement of the handle gradually closes the nozzle.
Patent GB-952801-A (GB)
Title: Cattle dips
Inventor: FRASER JAMES
Filed: 1962-02-07
Abstract: A cattle dip in the form of a miscible liquid comprises 2-cyclohexyl phenyl N-methyl carbamate in association with one or more water-immiscible organic solvents e.g. aromatic hydrocarbon fractions and one or more emulsifying agents to produce a stable emulsion on dilution with water.  An anionic and a non-ionic emulsifying agent may be used together e.g. calcium dodecyl benzene sulphonate and an ethylene oxide alkyl phenol condensate. The dip may include a bacteriostat.
Patent GB-815344-A (GB)
Title: Improvements in web guilding means
IPC: B65H23/32
Filed: 1957-02-12
Abstract: 815,344. Feeding webs. TIMSON, E. A. Feb. 11. 1958 [Feb. 12, 1957], No. 4764/57. Class 100(1) A web turning bar comprises at least two portions 1, 2 which are eccentrically disposed with respect to a common axis a and have shoulders 4, 5 between such portions which effect and maintain, lateral separation of two webs W, W<1> passing around the turning bar. As shown, the portions 1, 2 of equal external diameter are in the form of eccentrically bored sleeves fitted on a common spindle 3 in an end to end relation. The portions may thus be relatively offset transversely equal amounts, such that their surfaces adjacent a common card a are substantially flush, thereby ensuring that the web portions W, W<1> leave the bar in the same common plane. The portions 1, 2 are rotated on the spindle 3 to provide the appropriate degree of offset and then permanently or adjustably fixed in position. The spindle 3 may be adjusted longitudinally and/or transversely to achieve the required alignment of the web. In a modification, the portions are solid cylindrical portions formed integrally or spigoted together the axes of the portions being eccentrically disposed with respect to one another.
Patent GB-1002050-A (GB)
Title: Flexible bonding sheet material
Inventor: BUTLER JOHN P
IPC: B65D65/38
Filed: 1962-02-08
Abstract: A flexible bonding sheet material, adapted to be sealed to a sheet of packaging material by superimposing the bonding material and the packaging material and applying heat and pressure thereto, comprises a flexible web material provided on at least one surface with a coating constituted by a composition including 15-70% by weight of a petroleum wax having a melting point between 130  DEG F. and 170  DEG F. and 15-70% by weight of a copolymer formed by the copolymerization of 2-4 parts by weight of ethylene and 1 part by weight of vinyl acetate, and having a melt index between 5 and 500.  The web material may be a paper sheet, the composition being applied thereto in an amount of 8-20 lb. per ream, paperboard, regenerated cellulose or a laminate of paper and metal foil.  The packaging material may be polypropylene, polyethylene terephthalate, polystyrene, cellulose acetate, rubber hydrochloride, nitrocellulose- or polyvinylidene chloride-coated regenerated cellulose films, or waxed paper.  The composition may contain 10-30% by weight of a modifying resin compatible with the wax, e.g. terpene resins, hydrogenated rosin and esters thereof, coumarone-indene resins, polymerized rosin and esters thereof and/or cyclicized rubber.  The composition may also contain oxidized polyethylene which may have a molecular weight of 1200-1400 and an acid number of 12-25.  The petroleum wax may be microcrystalline, semimicrocrystalline or paraffin wax, or mixtures thereof.  The composition may be applied as a thin even coating, or as a series of small discrete mounds by means of an engraved or knurled applicator roll.
Patent GB-1012460-A (GB)
Title: Constant speed reciprocable hydro-pneumatic retarding device
IPC: F16F9/06
Filed: 1963-02-07
Abstract: 1,012,460. Hydro-pneumatic shock absorbers. J. KIRSCH. Feb. 7, 1963, No. 4990/63. Heading F2S. A unidirectionally constant speed hydropneumatic retarding device comprises a main cylinder 12 having reciprocably mounted therein a longitudinally bored piston 14 extending through the open end of the cylinder and containing a floatingly mounted free piston 16 which divides the bore into a lower pneumatic chamber 26 and a middle hydraulic chamber 24 separated from an upper hydraulic chamber 22 by the head 40 of the piston 14 which includes a cup-shaped sleeve valve member 94 responsive to the flow of fluid in one direction to control the area of ports 80 interconnecting upper and middle hydraulic chambers to thereby maintain the speed of the cylinder 12 constant in that direction. The pneumatic chamber 26 is filled with compressed air or nitrogen through a charging fitting 50 and the hydraulic chambers 22, 24 are filled through a port 25 in the end 23 of the cylinder closed by a threaded plug 27. In operation the cylinder 12 is secured to the movable part of, e.g., a press, and the piston 14 is secured to a stationary part thereof so that in the extended position an annular shoulder 43 on the piston is in close proximity to an annular shoulder 34 on the cylinder 12, and the floating piston 16 is forced by the compressed gas in the chamber 26 close to the casing 66 of the valve 94. When the cylinder 12 moves down on to the piston, hydraulic fluid is forced from the upper chamber 22 through ports 76, 80 in the casing 66 and ports 98, 104 in the valve 94 to the middle chamber 24 to thereby move the floating piston down and compress the gas in the lower chamber 26. A spring 90 maintains the ports 80, 98 aligned. When the cylinder 12 is released the floating piston is urged upwardly by the compressed gas in the chamber 26 and expels hydraulic fluid back into the upper chamber 22 through the port 104, the flow therethrough causing a pressure drop thereacross whereby the valve 94 moves to decrease the area of the ports 80 and thus reduce the flow of fluid to the upper chamber 22. In another construction the valve is reversed and therefore provides a regulated flow of fluid at a constant rate during the retracting stroke and free flow during the extending stroke.
Patent GB-304936-A (GB)
Title: Improvements in or relating to combination grates
IPC: F23H13/00
Filed: 1928-02-18
Abstract: 304,936. Planet roundry Co., Ltd., and Learmonth, J. Feb. 18, 1928. Combined open fireplaces and cooking-stoves; dampers; boilers, arrangement of. - In a combination range in which the boiler c is supported at its ends, the boiler flue c<3> passing under and up the back of the boiler, an inclined flue leads from the flue c<3> up the side of the fire-space to the forward part of the hot-plate flue d above the oven. In the construction shown, the flue is formed of plates c<4>-c<7> secured together and to the sides of the fire-space. The gases pass from the top end of the flue, under control of a damper c<2>, and are directed towards the centre of the flue space by a baffle o; they leave by an outlet formed by a casting e at the side of the oven and above and behind the inclined flue c. An opening b<3> in the side of the grate allows gases to pass to the bottom and outer side oven flues, a damper b<2> being provided at the top of the latter. A removable fire-back plate h closes the space above the boiler and allows access to the pipe connections. The top of the boiler space is closed by a plate indicated by a chain-line k in Fig. 2. The dampers b<2> and c<2> are constructed and arranged as described in Specification 299,693.
Patent GB-1180012-A (GB)
Title: Improvements in or relating to Niobium-Base Alloys.
Inventor: BUCKLEY NORMAN HARGREAVES
IPC: C22C27/02
Filed: 1966-02-05
Abstract: 1,180,012. Niobium alloys. JESSOPSAVILLE Ltd. Feb. 6, 1967 [Feb. 5, 1966], No.5154/66. Heading C7A. Nb-base alloys consist, by weight, of C 0À01 - 0À3% Mo 0À1 - 10% Ta 4 - less than 5%  W 0À1 - 25% Hf 0 - 10% V 0 - 5% Rare earths (ind. Sc and Y) 0 - 5% B 0 - 1% Be 0 - 2% Si 0 - 2% U 0 - 5% Nb and impurities (e. g. O 2  up to 0À2% N 2  up to 0À1%) - balance. The alloys may be heat-treated at 1200‹ -1400‹ C. in the course of applying protective coatings, and may be solution treated at 1500‹ -1900‹ C. and aged at 1200‹ -1400‹ C.
Patent GB-797027-A (GB)
Title: Improvements in electrostatic printing
IPC: G03G15/10
Filed: 1956-02-20
Abstract: 797,027. Electrophotography. GENERAL DYNAMICS CORPORATION. Feb. 20, 1956 [March 7, 1955], No. 5186/56. Class 98(2) [Also in Group XXXV] An electrostatic image is formed and developed simultaneously on a photoconductive layer 16 supported on a translucent conductive layer 14, by contacting successive portions of the photoconductor with a cylinder comprising a semiconductive coating 24 on a conductive core 22, which cylinder is supported so that it is insulated from earth to rotate in a liquid developer composition 28 comprising an electrostatic attractable powder suspended in an insulating liquid, while the layer 16 is exposed to a light image through the transparent layer 14 and while a potential is applied between the conductive layer 14 and the conductive core 22, the container 26 for the developer composition being earthed. The layers 14 and 16 may be supported on a transparent cylinder 12 as shown in Fig. 1, and exposed by a lamp 46 through a negative 18, or they may be supported on a flat transparent plate which is moved across the semiconductor cylinder by means of rollers. The developer compotions may comprise carbon suspended in kerosene, hydrocarbons or chlorinated hydrocarbons. The conductive layer 14 may be formed by evaporating gold with bismuth or tin oxide on to the transparent support 12. Semiconductive layer 24 may be of "conducting" rubber. The developer image may be transferred to a sheet 42 and the surface 16 cleaned at 44. Specifications 755,486 and 796,024 are referred to.
Patent GB-1514449-A (GB)
Title: Combustion chamber for gas turbine engines
IPC: F23R3/32
Filed: 1977-02-09
Abstract: 1514449 Flame tubes MOTOREN-UND TURBINEN-UNION MUNCHEN GmbH 9 Feb 1977 [19 Feb 1976] 05332/77 Heading F1L [Also in Division F4]  The upstream ends of opposed air admission ports 4, 4' in a gas turbine flame tube are shrouded by scoops 7, 8 into which fuel is injected by pipes 5, 6 respectively. To assist fuel metering the latter contain restrictions 18, 17 and metallic sponge 15, 16.
Patent GB-393551-A (GB)
Title: Improvements relating to the aeration of liquids or dispersion of gases or vapours therein
IPC: C02F3/20
Filed: 1933-02-21
Abstract: 393,551. Aerating liquids. DISTILLERS CO., Ltd., 12, Torphichen Street, Edinburgh, and LOCKEY, J., Great Burgh, Epsom, Surrey. Feb. 21, 1933, No. 5349. Addition to 387,486. [Class 14 (i).] Devices for aerating liquids or dispersing gases or vapours therein comprise a body of solid form having a longitudinal gap or gaps between it and a surrounding coil of wire, or equivalent enveloping bars, rods, or the like, the air or gas entering the longitudinal space or spaces and being dispersed through the interstices of the coil or the like. The solid enveloped body may be of fluted, triangular, cruciform, or other non-circular form in crosssection. In the embodiment shown, the cruciform body 1 is surrounded by a coil of flat wire or tape 5 clamped between an end-piece 2 and a ring 3, adjustment of which determines the spacing of the convolutions of the coil 5. Alternatively, the spacing of the convolutions may be fixed by grooves or notches on the edge of the supporting body, which may be constituted by two or more readily assembled pieces.
Patent GB-681103-A (GB)
Title: Improvements in or relating to pneumatically operated percussive tools such as rock drills
IPC: B25D9/14
Filed: 1950-03-04
Abstract: 681,103. Valve-gear for percussive tools. BRITISH ENGINES, Ltd., and McLEMAN, G. A. Feb. 9, 1951 [March 4, 1950], No. 5533/50. Class 122(ii) In a pneumatically operated percussive tool, such as a rock drill, in which the motive air is distributed by a differential piston type valve 23 that reciprocates in a valve chest 7 and on a valve guide 8 and an annular groove 31 formed in the outer periphery of the valve alternately connects with an annular groove 22 in the valve chest bore to admit motive air for the return of the piston 3 and an annular relief groove 28 in the valve chest bore to act as an exhaust on the forward movement of the piston, the space 26 between the valve 23 and the valve guide 8 is vented by openings 23a in the valve that are in continuous communication with the relief groove 28. The valve guide 8 is provided with apertures 17 leading from an annular groove 18 in its lower end. The valve chest 7 has a third annular groove 32 between the grooves 22, 28 communicating by a passage 35 with a port 36 in the lower or outer end of the working cylinder 1. Motive air is supplied through a tumbler valve 14 and passes through ports 16, 19, an annulus 20 and ports 21 to the annular groove 22. In the position shown in Fig. 1 air passes from the groove 22 through grooves 31, 32, passage 35 and port 36 to the back of the piston 3 which moves inwardly, exhaust from the inner end of the cylinder taking place firstly through an exhaust port 5 and, when that port is covered by the piston, through a port 38 and a passage 37 to the space 40 above the valve 23 and thence via an aperture 33, the groove 28 and ports 29 to atmosphere. When the piston covers the port 38 air in the inner end of the cylinder is compressed and at a predetermined position the pressure acting on the underside face 25 of the valve through ports 17 overcomes that acting on the holding area 34 and the valve is moved into its upper position. Motive air now passes from the groove 22 through ports 17 to the inner end of the cylinder and forces the piston forward, air being exhausted from the outer end of the cylinder firstly through port 5 and then, when that port is covered, through the port 36, the passage 35, the groove 32 and past the valve 23 to atmosphere through the groove 28 and ports 29. When the piston uncovers the port 38 pressure air passes to the space 40 above the valve 23 and urges the latter downwards to its original position and the cycle recommences. The space 40 is vented when the valve is in its inner position through aperture 33.