baber/WOPTO huggingface dataset:
Patent GB-968810-A (GB)
Title: Improvements relating to props for use in mining
Inventor: SCHULTE HEINRICH
IPC: E21D15/42
Filed: 1963-04-30
Abstract: 968,810. Pit props. BECORIT (G.B.) Ltd. April 30, 1963, No. 16957/63. Heading E1E. In a telescopic pit prop 10, 11 wherein friction locking is effected by a wedge 22 urging friction pads 18, 20 carried by a housing 16 of the outer prop into contact with the inner prop, the latter member is slightly tapered and provided with treads 28, 29 as shown to maintain a substantially constant contact pressure between the inner prop and the pads. The pads abut a flange 30 welded to the housing 16 which is provided with a filler piece 25 for wedge-engagement purposes. The taper is about 1 in 500. For details of materials employed the Specification should be referred to.
Patent GB-873652-A (GB)
Title: Improvements in or relating to valve operating mechanism for internal combustion engines
Inventor: THOMAS JAMES ALBERT EDWARD
IPC: F02F1/24
Filed: 1959-05-19
Abstract: 873,652. Valve gear; casings. DAVEY, PAXMAN & CO. Ltd. May 16, 1960 [May 19, 1959], No. 17032/59. Classes 7(2) and 7(6). A bridge-piece 3, Fig. 1, is actuated from a camshaft (not shown) via a push-rod and a rocker lever 1 and operatively bears on the stems of a pair of overhead valves. The piece 3 is fixedly mounted on a post 6, Fig. 4, vertically slidable in a guide means 7 having extensions 9 which prevent rotation of the piece 3. As shown there are two pieces 3 operating respectively a pair of inlet and a pair of exhaust valves in one diesel cylinder head. A valve cover 11 (shown in broken lines) has a recess 12 arranged to clear a fuel inlet pipe.
Patent GB-668324-A (GB)
Title: Improvements in and relating to gas blast electric circuit breakers
Inventor: FERGUSON JOHN MCINTYRE
IPC: H01H33/70
Filed: 1949-06-28
Abstract: 668,324. Gas-blast circuit-breakers. ENGLISH ELECTRIC CO., Ltd. June 23, 1950. [June 28, 1949] No. 17075/49. Class 38 (v). In order to prevent turbulation of the gas as it flows to the contacts, and to increase the voltage strength of the contact gap, the gas path is subdivided into a number of parallel paths by baffles 7, 8 arranged between the movable contact support 2 and the tubular housing 1. The baffles may be in series, as shown, or concentric, and may comprise a ring 7 and a number of radial fins 8. The baffles may be shaped so as to direct the gas into the contact gap.
Patent GB-1058709-A (GB)
Title: Improvements in or relating to implements for spreading materials
IPC: A01C17/00
Filed: 1964-04-24
Abstract: 1,058,709. Centrifugal distributers. PATENT CONCERN N.V. April 24, 1964 [May 7, 1963], No. 17191/64. Heading A1D. An implement for spreading materials over the ground comprises a hopper from which material is fed by means of an endless conveyer to a spreading member 18 which is provided with a free wheel clutch 39 and an inertia weight 24 arranged adjacent to the periphery. The spreading member 18 is attached to a drive shaft 9 by means of a universal ball joint 27 and a resilient ring 34 so that due to the weight 24 the spreading member tends to remain in a horizontal plane even if the shaft 9 temporarily becomes inclined to the vertical. The housing 33 serves as a stop to enable the member 18 to tilt up to 10 degrees relative to the shaft 9.
Patent GB-1456920-A (GB)
Title: Self-extinguishing thermoplastic moulding compositions sealing arrangement
IPC: C08L21/00
Filed: 1974-04-19
Abstract: 1456920 Flame retardant compositions and foams thereof BASF AG 19 April 1974 [21 April 1973 25 Oct 1973] 17192/74 Headings C3C and C3P Self-extinguishing thermoplastic moulding compositions comprise (1) a styrene polymer, (2) an organic bromine compound as flameproofer and (3) 0À01 to 5 weight per cent of an azo compound of formula wherein R<SP>1</SP> and R<SP>2</SP> are C 1-12  aliphatic, cycloaliphatic or araliphatic radicals and X is chlorine or bromine, or a radical as R<SP>1</SP> and R<SP>2</SP>. The polymer may be a polystyrene, copolymer of styrene with α-methyl styrene, acrylonitrile, butadiene, isoprene and C 1-8  alkyl (meth)acrylates, particularly high impact polystyrenes containing 2-10 weight per cent of polybutadiene and ABS resins. The compositions may contain expanding agents and may be converted to foams. The bromine compound may be hexabromocyclododecane, octabromohexadecane or a brominated rubber. Exemplified azo compounds are 2,2<SP>1</SP>-dimethyl-[2,2<SP>1</SP>-azobutane], 2,2<SP>1</SP>- dimethyl - [2,2<SP>1 </SP>- azodecane], 2,2<SP>1</SP>,4,4<SP>1</SP> - tetramethyl - [2,2<SP>1</SP> - azopentane], 3,3<SP>1</SP> - dimethyl- [3,31 - azopentane], 3,3<SP>1</SP> - diethyl - [3,3<SP>1</SP>- azopentane], 3,3<SP>1</SP> - dibenzyl - [3,3<SP>1</SP> - azopentane], 2,2<SP>1</SP>,4,4<SP>1</SP> - tetramethyl - 3,3<SP>1</SP> - dicyclohexyl- [3,3<SP>1</SP> - azopentane] , 2,2<SP>1</SP>,3,3<SP>1</SP> - tetramethyl- [3,3<SP>1</SP> - azopentane], 2,2,2<SP>1</SP>,2<SP>1</SP>,3,3<SP>1</SP> - hexamethyl- [3,3<SP>1</SP>-azopentane], 2,2<SP>1</SP> - methylchloro - [2,2<SP>1</SP>- azobutane], 2,2<SP>1</SP> - methylbromo - [2,2<SP>1</SP> - azobutane], 2,2<SP>1</SP> - methylchloro - [2,2<SP>1</SP> - azodecane], 3,3<SP>1</SP> - ethylchloro - [3,3<SP>1</SP> - azopentane]. and 3,3<SP>1</SP>- benzyl chloro - [3,3<SP>1</SP> - azopentane]. The products of Examples (1) to (22), (24) and (25) are foamed using methylene chloride and pentane as blowing agents.
Patent GB-582302-A (GB)
Title: Improvements in or relating to electrical systems for motor driven vehicles
IPC: H02J7/14
Filed: 1944-09-12
Abstract: 582,302. Supply systems for consuming devices ; charging batteries. BIRMINGHAM SMALL ARMS CO., Ltd., and POPPE, E. Sept. 12, 1944, No. 17365. [Class 38 (iv)] An A.C. generator 1 driven by a motorvehicle engine has a tapped,field winding 5, adapted to charge a battery 11 through a double-acting switch device 7 and a dry-plate rectifier 9, connection being also made from the battery through the switch 7 to a lighting system. The switch 7 simultaneously controls the generator-output and the lighting system in such a manner as to utilise the whole winding 5 for charging the battery when the switch arm 27 engages lamp contact 23 or 25, and to utilise only part of the winding 5 when the lamps are not in use, as in the position shown, so as to prevent overcharging of the battery.
Patent GB-1180546-A (GB)
Title: Improvements in Gyroscopes
IPC: G01C19/02
Filed: 1968-04-10
Abstract: 1,180,546. Gyroscopic apparatus. BÍLKOW G.m.b.H. April 10, 1968 [April 21, 1967], No.17409/68. Heading G1C. A gyroscope having a rotor 2 containing a powder charge 8 which can be fired by an electrical detonator 14, the rotor being mounted in gimbals 6, 26 is caged prior to use by a pivoted lever 23 having an opening 7 which is held in engagement with an extension 5 of the gimbal 6 electrical contact elements 19, 20 also being provided on the lever 23 to engage with contacts 17, 18 coaxial with the rotor and connected to the detonator 14. The lever 23 is positively held in engagement with the extension 5 on the gimbal 6 by a U-shaped rod having one limb 36 and its other limb connected to an attachment adapted to be moved by firing of a pyrotechoric charge (not shown) to clear the lever 23 for pivoted movement away from the extension 5 under the action of a spring 16. The limb 36 then moves back after firing of the pyrotechnic charge to hold the lever 23 free of the rotor. The contacts 22 are carried by a support on the lever 23 and will be disconnected by pivotal movement of the lever. In use the charge 8 is fired to bring the rotor to speed, and then the pyrotechnic charge is fired to release the lever 23 and uncage the rotor and gimbals.
Patent GB-112125-A (GB)
Title: Improvements in Processes and Machines for Plating Sheet Metal.
Inventor: ROBERTS CHARLES CROSS
Filed: 1917-11-26
Abstract: 112,125. Roberts, C. C. Dec. 16, 1916, [Convention date]. Tinning; coating by dipping. - In a machine tor coating metal sheets with tin or other material, particularly on one side only, a sheet is passed over acid brushes 6 and heated drums 9 to a tinning &c. bath 17 and thence over wiping brushes 13 and a drum 15 to a reel 16 which may serve to pull the sheet through the machine. The sheet 51 is guided through the bath 17 by a shoe 35, preferably heated internally, and the edges of the sheet are engaged by laterally adjustable members 19, 24 formed respectively wit h grooves 21 and ribs 25, whereby the bath is confined to the lower surface of the sheet. To insert a sheet in the machine, the parts 19, 24, 35 are raised clear of the bath by gearing provided for the purpose and, after the insertion of a sheet, are lowered to depress the sheet into the bath. The members 24 may be revolving or fixed or may be attached to or form part of the shoe 35. Other means may be employed for forming a fluid-tight joint at the edges of the sheet ; for example the sheet may pass through curved grooves in the faces of yieldingly mounted vertical plates. An internally heated rotatable drum may be used instead of the shoe 35. The machine may be adapted also to coat sheets on both sides.
Patent GB-718217-A (GB)
Title: Improvements in stabilizer chemicals and their use in rubber
IPC: C08K5/526
Filed: 1952-07-11
Abstract: An aqueous emulsion of a rubbery conjugated diene polymerizate is stabilized with a triphenyl phosphite in which each benzene ring is linked to one or to two alkyl groups, each alkyl group containing at least eight carbon atoms.  Specified polymerizates are polybutadiene, polyisoprene, and copolymers of 1, 3-butadiene with styrene, acrylonitrile, methyl acrylate or methacrylate, vinyl toluene, or vinyl pyridine.  Particularly specified phosphates are tri- (octyl-phenyl) tri- (nonyl-phenyl), tri- (dodecyl-phenyl), tri-(dinonyl-phenyl), mono-(octyl-phenyl) di- (nonyl-phenyl) and mono-(nonyl-phenyl) di (octyl-phenyl), and mixtures of octyl and nonyl substituted triphenyl phosphites. Small proportions, e.g. 0.1-10 per cent. of an epoxy compound such as propylene oxide, ethylene oxide, styrene oxide, butadiene monoxide, glycidol, epichlorhydrin, glycidyl ethers, isobutylene oxide, 1, 2:3, 4 diepoxy butane, bis (2, 3-epoxy-propyl) ether, di-(2, 3-epoxy propoxy) benzene, 1, 2:5, 6-diepoxyhexane, p-divinyl benzene dioxide, 1 vinyl 3-hexane dioxide, cyclohexene oxide, 1, 2:3, 4-diepoxy-1, 4-dimethyl butane and 1, 2:3, 4-diepoxy-1, 4-diphenyloctane may be present.  The phosphites may be added in the form of aqueous emulsions with oleic acid.  U.S.A. Specifications 2,008,032 and 2,419,354 are referred to.ALSO:Triphenyl phosphites in which each benzene ring is linked to one or two alkyl groups each containing at least eight carbon atoms are prepared by the reacting of the corresponding alkyl phenol with phosphorus trichloride.  In examples: (1) p-octyl phenol is heated with phosphorus trichloride and, after cooling and sweeping out of residual hydrochloric acid, reduced pressure distillation yields tri-(p-octylphenyl) phosphite; (2) tri-(nonyl-phenyl) phosphite is prepared as in (1) starting from nonyl phenol; (5) tri-(dodecyl-phenyl) phosphite as in (1) from dodecyl phenol; (6) tri-(di-nonyl phenyl) phosphite as in (1) from o-p-dinonyl phenol; (7) a mixture of octyl and nonyl substituted triphenyl phosphites as in (1) from a mixture of octyl and nonyl phenols; (3) p-octyl phenol is reacted with phosphorus trichloride to give octyl phenoxy phosphorus dichloride which is then treated as in (1) with nonyl phenol to yield mono-(octyl phenol) di(nonyl-phenyl) phosphite; (4) nonyl phenol is reacted with phosphorus trichloride to give mono-nonyl phenoxy phosphorus dichloride which with p-octyl phenol gives mono-(nonyl phenol) di-(nonyl-phenyl) phosphite; and (8) phenol and nonene are heated with concentrated sulphuric acid to give a mixture of monononyl phenol and some dinonyl phenol which on treatment with phosphorus trichloride as in (1) yields a mixture of nonyl substituted triphenyl phosphites.  U.S.A. Specifications 2,008,032 and 2,419,354 are referred to.
Patent GB-1418031-A (GB)
Title: Electrical connectors
IPC: H01R31/00
Filed: 1972-04-15
Abstract: 1418031 Two-part couplings RISTS WIRES & CABLES Ltd 6 April 1973 [15 April 1972] 17487/72 Heading H2E A connector comprises an insulating body 1 with a plurality of double-ended plug pins 3, each pin having one end 4 on one side of the body and the other end 5 on the other side of the body, the ends 4 being of smaller diameter than the ends 5 and the pins being relatively positioned and directed to provide an identical arrangement on each side of the body. The plastics body 1 is moulded around the pins and includes a mounting flange 2, pairs of walls 9, partitions 11 and a gas-tight partition 8. The pins include a central portion 6 with an annular recess 7.
Patent GB-835404-A (GB)
Title: Improvements in and relating to non-linear electric circuit arrangements
Inventor: ASBURY ALLAN
IPC: G06G7/28
Filed: 1955-06-17
Abstract: 835,404. Electric correspondence control systems. ENGLISH ELECTRIC CO. Ltd. June 15, 1956 [June 17, 1955], No. 17550/55. Class 40 (1). [Also in Groups XXXV and XXXVI] An electric circuit arrangement arranged to produce an output voltage which varies non linearly with the input voltage comprises input terminals 16a, 16b to which are applied a voltage, from a tachometer generator 15, which varies linearly with the speed of the generator 15, the circuit arrangement 11, 12, 13, 14 being arranged so that the voltage which appears across the output terminals 19a, 19b decreases at a progressively decreasing rate with increase in input voltage whilst the voltage which appears across output terminals 19b, 19c increases at a progressively increasing rate with increase in input volts. The resistor 11 has a linear characteristic whilst the circuit components 12b, 13b, 14b are non-linear resistors of the kind which offer high resistance to current flow therethrough at low-current values and a low resistance at high current values, the transition from the high to the resistance conditions taking place rapidly over a small current range. The elements 12b, 13b, 14b may be oppositely connected barrier-layer-type rectifiers and each network has a different number of elements so that each network requires a different value of current therethrough to cause it to change from the highto the low-resistance condition. By a suitable choice of components the voltage developed across the terminals 19a, 19b can be made to vary in accordance with the square root of the input voltage, that is the rate of increase progressively decreases. Concomitantly, the resistor 11 being linear, the voltage developed across it will show a rate of increase which progressively increases.
Patent GB-798989-A (GB)
Title: Improvements in or relating to apparatus for measuring small distances
IPC: G01B7/14
Filed: 1955-06-17
Abstract: 798,989. Electric tests. WAYNE KERR LABORATORIES, Ltd., and CALVERT, R. Sept. 14, 1956 [June 17, 1955], No. 17567/55. Addition to 762,396. Class 37. [Also in Group XXXVIII] The invention relates to apparatus of the type claimed in the parent Specification 762,396 in which relative movement of the plates of a condenser 35 is determined by incorporating it in a bridge circuit with a considerably larger condenser 36 the plates of which are provided with micrometer adjustment so that the spacing of plates 35 is given by the reading of the micrometer divided by the relative sizes of the two condensers. According to the invention the condensers 28 to 31 may be inserted in series with condenser 20 by means of switch 27. Condensers 28 to 31 are equivalent to steps of distance between the plate of capacitor 35. Thus if capacitor 20 corresponds to one-hundredth of an inch on capacitor 35, capacitors 28 to 31 may be made equivalent to steps of one-hundredth of an inch in the spacing of the plates of container 35. In the arrangement of Fig. 2 (not shown) the output of detector 18 operates a moving coil meter 40 which moves a plate of condenser 26 to rebalance the bridge.
Patent GB-931360-A (GB)
Title: Cut pile tufting machine
IPC: D05C15/22
Filed: 1962-05-08
Abstract: 931,360. Tufting machines. SINGERCOBBLE Inc. May 8, 1962 [May 31, 1961], No. 17570/62. Class 112. [Also in Group VIII] Cut pile is produced by a tufting-machine in accordance with a predetermined pattern by cutting each loop either substantially at its centre to provide a tuft with legs of substantially equal length, or at a point removed from its centre to provide a tuft with legs of markedly different length. As shown, an oscillating looper hook 16 has a loop-seizing beak 23, one side of which has a lower edge 25 adapted to co-operate with an edge 26 of an oscillating loop-cutting blade 19. The other side of blade 23 has a cut-away portion 27 extending between a shoulder 28 situated near the point 24, and a shoulder 29 extending downwardly at the other end. A finger 30 is pivoted midway at 31 in cutaway portion 27 and is biased by a spring 34, whereby its lower edge normally abuts the upper edge 33 of shoulder 29 and is positioned parallel to and somewhat below the lower edge 25 of blade 23. The yarn 37 is fed to the needle 12 by pattern-controlled two-speed means, as described in U.S.A. Specification 2,966,866. At the low feeding speed the yarn tension is sufficient to swing finger 36 upwardly till its lower edge is juxtaposed with the lower edge 25 of blade 23. A short tuft A is thereby formed having legs B of substantially equal length. At the high feeding speed the yarn tension is sufficiently reduced for finger 30 to move downwardly into engagement with edge 31. A tuft C is thereby formed having a short leg D and a long leg E.
Patent GB-462509-A (GB)
Title: Improvements in elastic trail plates for guns
IPC: F41A23/54
Filed: 1936-06-25
Abstract: 462,509. Gun-mountings. MATERIELS ET ARMEMENTS MODERNES. June 25, 1936, No. 17661. Convention date, June 25, 1935. [Class 92 (i)] A device for directly cushioning recoil of high-angle guns comprises a trail-plate 2 fitted with a cylinder 11 housing a piston 7<a>, the hollow rod of which is connected to the gun 1 by a joint 7. Springs 8, 10 are fitted above and below the piston, the cylinder also containing gas and a non-freezable liquid. A cushionblock 12<a> mounted on a guide-pin 12 forms a yielding abutment for the piston 7<a> at the end of the recoil. The plate 2 may be provided with a covering of rubber &c. 14. As shown in Fig. 3, a plurality of similarly-constructed elastic trail plates may be arranged symmetrically about the joint 7.
Patent GB-1436060-A (GB)
Title: Ceramic pigments and a process for their production
IPC: C09C1/62
Filed: 1974-04-23
Abstract: 1436060 Ceramic pigments DEUTSCHE GOLD-UND SILBER SCHEIDEANSTALT 23 April 1974 [11 May 1973] 17667/74 Heading C1M A ceramic pigment, for colouring ceramic glazes, comprises discrete, homogenously distributed colloidal metal particles of size 0À005-0À1 Ám incorporated into an acid-resistant compound which is stable at the temperatures at which ceramic glazes are fired. The acidresistant compound preferably is of size 1-10 microns. The metal may be Au, Ag, Ru, Rh, Pd, Ir or Pt, or an alloy thereof. The colloidal metal preferably comprises, as an alloy, gold and 1-10%, based on the weight of the gold, of Hg, Cd, Zn, Sn, Ni and/or Pb. The metal content of the pigment is preferably 0À1-3% by weight. The acid-resistant compound may be ZrSiO 4 , SnO 2 , ZrO 2 , Al 2 O 3 , ZnAl 2 O 4 , CeO 2 , CePO 4 , CaSnSiO 5  or spinel (MgAl 2 O 4 ). The pigment may also include LiF or borax. Preferably the colloidal metal particles are formed by pyrolytic decomposition (e.g. at 850-1100‹ C.) of an organic metal resinate, during synthesis or crystal growth, of the acid-resistant compound. Preferably the acid-resistant compound, or its components or precursor(s), is mixed with (e.g.) gold resinate, silver resinate, palladium resinate, AuCN or AgNO 3 , and formed into a paste with water and, optionally, added colophony (rosin), and heated at 850-100‹ C., for example.
Patent GB-1168220-A (GB)
Title: gamma-Butyrolactone
IPC: C07D315/00
Filed: 1968-04-11
Abstract: 1,168,220. #-Butyrolactone. KYOWA CHEMICALS K.K. 11 April, 1968 [11 April, 1967], No. 17677/68. Heading C2C. γ-Butyrolactone is prepared from maleic or succinic anhydride or an ester of maleic, succinic or fumaric acid, preferably a diester of a C 1-6  alcohol, by hydrogenation in the vapour phase in the presence of copper-zinc catalyst. The ratio of Cu to Zn may be 1 : 99 to 95 : 5 or preferably 80 : 20 to 95 : 5 and the catalyst may contain a promoter, other than chromium, a carrier or a filler. The reaction may be performed at 150-350‹ 0. and at atmospheric pressure or slightly elevated pressure in the presence of H 2  gas or H 2  gas diluted with an inert gas. The reactant may be mixed with an organic solvent, e.g. γ-butyrolactone prior to the hydrogenation.
Patent GB-996867-A (GB)
Title: Improvements in and relating to viscous friction dampers
Inventor: EDWARDS MAURICE FRED
IPC: F16F9/30
Filed: 1963-05-04
Abstract: 996,867. Torsional vibration dampers. HYDROKIN Ltd. April 27, 1964 [May 4, 1963], No. 17728/63. Heading F2S. In a torsional vibration damper in which an annular flywheel 10 is enclosed in and slips relatively to a casing 12 containing a viscous damping medium, a non-metallic journal bearing 18 comprising a ring of material having some inherent flexibility and resilience is provided in free-floating relation between axially directed surfaces of the casing 12 and the flywheel 10. In the construction shown, thrust bearings of the same non-metallic bearing material are arranged around the hub 14 of the damper. The bearing 18 is circumferentially discontinuous (Fig. 2, not shown). The material may comprise a nylon base material, an asbestos base fabric material, thermosetting plastic or synthetic resins or polyester resins, all of which are moulded into the strip of bearing material. In a modification, the flywheel is made integral with the securing flange (22 in Fig. 1), the casing being mounted around and sealed to the flywheel and its mounting (Fig. 3, not shown). In a further embodiment, the bearing is provided over part of the inner periphery of the flywheel, the thrust bearings being radially co-extensive with the flywheel.(Fig. 4, not shown). The damper hub is recessed adjacent its interna louter end to provide a reservoir for the damping medium.
Patent GB-580513-A (GB)
Title: Improvements relating to synchro-mesh change-speed gearing
IPC: F16D23/06
Filed: 1944-09-16
Abstract: 580,513. Synchronized claw-clutches. HUMBER, Ltd., and FROST, E. D. Sept. 16, 1944, No. 17743. [Class 80 (ii)] Balk-rings 28, 29 of a double synchromeshed claw-clutch in a change-speed gear have a number (six shown) of angularly-spaced forked arms 33 which connect them without axial play to an outwardly-springing ring 35, which bears on the teeth of an external slidable clutch-sleeve 24 and, during engagement, transmits axial thrust from the latter to the appropriate balkring at each of the arms 33, thereby pressing a coned surface on the balk-ring into frictional engagement with a complementary surface on a co-acting positive clutch member 25 or 26, for synchronising. At the same time the ring 35 positively retracts the idle balk-ring from contact with its co-acting friction-cone thus preventing rubbing and so wear of the cones. The balk rings 28, 29 are centred in, and their arms 33 have limited circumferential play in slots in a hub-member 17, which is fast on the driven shaft 12 and is in splined engagement externally with the sliding clutch-sleeve 24. The spring- ring 35 engages notches in the sliding clutchsleeve 24 in gear and neutral positions. The co-acting clutch-elements 25, 26 are secured to freely-mounted wheels 13, 14 of the changespeed gear. Specification 524,517 is referred to.