baber/WOPTO huggingface dataset:
Patent GB-1107992-A (GB)
Title: Bladed rotary blowers
Inventor: ALLEMANN MARTIN
IPC: D06B11/00
Filed: 1965-04-08
Abstract: 1,107,992. Axial-flow and radial-flow blowers. SULZER BROTHERS Ltd. April 8, 1965 [April 8, 1964], No. 50868/67. Divided out of 1,107, 991. Heading F1C. The subject-matter of this Specification is substantially the same as that of Figs. 1 and 2 of Specification 1,107,991, but the claims are concerned with a blower having a housing which is supported from a wall surrounding the blower by a bearer surrounding and connected to the housing and anchored in the wall, at least some of the peripheral portions of the surface of the bearer being arranged to receive a flow of coolant.
Patent GB-1372198-A (GB)
Title: Optical alignment and contact printing system with chuck assembly
IPC: G03F7/20
Filed: 1971-11-02
Abstract: 1372198 Alignment in contact printing KASPER INSTRUMENTS Inc 2 Nov 1971 [12 Nov 1970] 50951/71 Heading G2A The invention relates to apparatus for aligning a semi-conductor wafer 54 and a photo-mask 22, substantially as described and shown in Specification 1324810, the wafer being supported on a perforated plate 189 carried by a vacuum chuck 52, which chuck is raised and lowered by a piston 120 sliding over a cylindrical wall 118. The manner of operation is as described in Specification 1324810. The claims are directed towards the additional features of the means 200 movable from a retracted to a sealing position, and the means 226, 227 for producing a partial evacuation.
Patent GB-1414842-A (GB)
Title: 2,5-anhydro-d-alloses
IPC: C07H19/052
Filed: 1973-02-06
Abstract: 1414842 2,5-anhydro-D-alloses SYNTEX (USA) Inc 6 Feb 1973 [11 Feb 1972] 50993/74 Divided out of 1414841 Heading C2C Compounds II  in which OR<SP>3</SP>, is a C 1-12  hydrolysable acyloxy group, t-butoxy, tetrahydropyran-2<SP>1</SP>-yloxy, 4<SP>1</SP>- methoxytetrahydropyran-4<SP>1</SP>-yloxy, benzyloxy or benzyloxy substituted by nitro, halo, C 1-6  akyl or C 1-6  alkoxy, OR<SP>1</SP> and OR<SP>2</SP> are the same and are selected from the same groups as OR<SP>3</SP> or together form an alkylidenedioxy or cycloalkylidenedioxy group having up to 10 C atoms and R is optionally substituted phenyl are prepared by (1) treating a compound I  in dichloromethane with p-toluenesulphonic acid in acetone or (2) treating a compound I with an ion exchange resin in hydrogen form in a suitable solvent. Compounds II are novel except when OR<SP>1</SP>, OR<SP>2</SP> and OR<SP>3</SP> are benzyloxy. Compounds I prepared are those in which (a) OR<SP>1</SP>, OR<SP>2</SP> and OR<SP>3</SP> are the same and are benzoyloxy, benzyloxy, acetyloxy, t-butoxy, tetrahydropyran-2<SP>1</SP>- yloxy or 4<SP>1</SP>-methoxytetrahydropyran-4<SP>1</SP>-yloxy or (b) OR<SP>3</SP> is benzoyloxy and OR<SP>1</SP> and OR<SP>2</SP> are isopropylidenedioxy.
Patent GB-1195420-A (GB)
Title: Electric Power Supplies for Arc Welding
Inventor: SZEKELY PAUL
IPC: B23K10/02
Filed: 1967-11-09
Abstract: 1,195,420. Control circuits for arc welding. WESTINGHOUSE BRAKE & SIGNAL CO. Ltd. 1 Nov., 1968 [9 Nov., 1967], No. 51055/67. Heading H2H. [Also in Division G3] Circuit for an arc welding system includes a first supply for striking an arc and providing ionization current, and a second supply which provides the welding current and is controlled by a feedback device responsive to the welding current. As shown in Fig. 1, a first supply through diodes 1-6 and a ballast resistor 17 is connected between a non-consumable electrode 31 and the nozzle 32 of a welding torch, between which an arc is struck. Plasma in the nozzle 32 is shielded by inert gas fed through an outer nozzle 33, and the arc is transferred to a workpiece 34 which is connected to the second supply through a choke 15 and a thyristor bridge 14. The current from the second supply is sampled by a device 16 which, through a transistor 24, controls the firing angles of the thyristors 7-12, thus controlling the welding current. The circuit may be adapted for a TIG welding system. The nozzle 32 is then not present and the terminal D is connected directly to the workpiece.
Patent GB-1060800-A (GB)
Title: Improvements in or relating to memory devices
Inventor: HEWITT MAURICE CHARLES PATON
IPC: B65G47/50
Filed: 1964-12-15
Abstract: 1,060,800. Mechanical digital data storage apparatus. VICKERS Ltd. Nov. 12, 1965 [Dec. 15, 1964], No. 51102/64. Heading G4B. A memory device comprises a ring rotatable about its axis, elements mounted on said ring and capable of assuming at least two operative positions on the ring, which positions are angularly spaced about the circular axis of the ring but not along this axis, means for shifting each element from one operative position to another as said element passes a first location upon rotation of the ring and means for detecting the operative position of each element as the latter passes a second location upon rotation of the ring. As illustrated in Fig. 1 (not shown) the elements e.g. of nylon, spring steel or copper have spring arms (7) partially surrounding the ring (3) and a projection (8). Fig. 2 (not shown) illustrates the arms (7) as being split and Figs. 3 and 4 (not shown) illustrate various methods of locating the elements on the ring. A setting mechanism (9) is disposed above the ring with an arm (10) arranged to co-operate with projections (8). A detecting device (14) e.g. microswitch, photo-electric device, magnetic device or a capacitance device is shown. in Fig. 1. The memory device may work in conjunction with a conveyer belt.
Patent GB-1047770-A (GB)
Title: Improvements in or relating to generators for producing pulses of adjustable duration
IPC: H03K5/01
Filed: 1963-12-30
Abstract: 1,047,770. Transistor-tunnel diode pulse circuits. COMPAGNIE DES MACHINES BULL. Dec. 30, 1963 [Jan. 8, 1963], No. 51237/63. Heading H3T. A variable width pulse generator comprises a transistor having tunnel diodes connected respectively to the emitter and base and an input terminal connected to the emitter through a variable capacitor and to the base through a resistor so that an input signal triggers first the emitter tunnel diode to turn the transistor on and then the base diode to turn it off. In the circuit described the input signal is a sine wave and variation of the capacitor can cause the emitter voltage to lead by up to 90 degrees to produce a corresponding change in conduction period of the transistor. This period may be shortened by connecting a capacitor across the resistor. Pulses derived from the transistor may be clipped to a constant-amplitude and two circuits may be driven in antiphase by a centre-tapped transformer to produce two 180 degrees displaced pulse trains.
Patent GB-1519610-A (GB)
Title: Process for molecular weight lowering of vinyl or vinylidene halide polymers
IPC: C08F14/00
Filed: 1975-12-15
Abstract: 1519610 Polymerization of vinyl or vinylidene halides HOOKER CHEMICALS & PLASTICS CORP 15 Dec 1975 [30 Dec 1974] 51280/75 Heading C3P A vinyl or vinylidene halide is homopolymerized or copolymerized with up to 50% by weight of a comonomer or back bone polymer in the liquid phase in the presence of an azo initiator and as a molecular weight controlling agent an organotin mercaptide ester of the formula RnSn(SR<1>-COOR<11>)4-n where n is 1, 2 or 3, and R and R<11> are optionally substituted alkyl, aryl, aralkyl or alkaryl radicals and R<1> is an optionally substituted alkylene or arylene radical. The polymerization may be carried out in bulk in two stages with different rates of stirring, and the mercaptide ester being present in the second stage only. In the examples vinyl chloride is homopolymerized or copolymerized with methyl acrylate in bulk in two stages using azo bis(2,4-dimethylvaleronitrile) as initiator in the presence of dibutyl (or octyl) tin SS<1> bisisooctylmercaptoacetate.
Patent GB-1126756-A (GB)
Title: Process for the production of ethylene polymers or copolymers of ethylene
Inventor: RATZSCH MANFRED
IPC: C08F10/00
Filed: 1966-11-16
Abstract: 1,126,756. Polymerizing ethylene. LEUNAWERKE "WALTER ULBRICHT" VEB. 16 Nov., 1966, No. 51351/66. Heading C3P. In a process for the polymerization of ethylene in a tubular reactor at 50‹ to 400‹ C. and above 500 atmospheres in the presence of radical-forming initiators in which ethylene and initiator are introduced at the beginning of the reactor and in association at one or more further zones along the reactor tube, the further point in such zones at which initiator is fed is before the further point at which ethylene is fed in association, and the initiator is fed at 20‹ to 200‹ C. above the temperature of the reaction mixture immediately after the associated ethylene feed point. Specified initiators are oxygen, peroxides and azo compounds, and chain transfer agents, e.g. cyclohexane, paraffins, chlorinated hydrocarbons, alcohols, aldehydes, chlorinated carboxylic acids and hydrogen, and solvents, e.g. benzene and iso-octane, may also be present. The polymerization may be terminated by pressure reduction. Examples describe the polymerization of ethylene in the presence of (1) t-butyl perbenzoate and di-t-butyl peroxide in paraffin oil, (2) dilauroyl peroxide and di-t-butyl peroxide in paraffin oil and (3) dilauroyl peroxide and t-butyl perbenzoate in methanol.
Patent GB-1269928-A (GB)
Title: Method for laminating oriented polystyrene film to polystyrene foam
IPC: B29C43/30
Filed: 1970-10-29
Abstract: 1,269,928. Laminates. MOBIL OIL CORP. 29 Oct., 1970 [14 Nov., 1969], No. 51369/70. Heading B5N. A laminate comprising a layer of polystyrene film and at least one layer of an oriented polystyrene film is made by extruding a polystyrene foam containing a blowing agent which has a softening effect on polystyrene, bringing the polystyrene foam which still contains residual quantities of the blowing agent into contact with an oriented polystyrene film and thermally bonding the foam and film together under conditions which do not cause disorientation of the film, e.g. 215 to 225 F. Suitable blowing agents are pentane, isopentane, propane, acetone, methyl acetate and aliphatic hydrocarbons such as hexane or heptane. The polystyrene film is preferably heated prior to bonding with the foam, e.g. by the passage over heated rollers. In an embodiment a film is bonded to both sides of a foam to form a sandwich laminate.
Patent GB-1277571-A (GB)
Title: Improvements in or relating to door handle assemblies
Inventor: MUNDAY ERIC OSMOND
IPC: E05B3/06
Filed: 1968-04-05
Abstract: 1277571 Attaching door handles to spindles TAURUS HARDWARE Ltd 4 July 1969 [5 April 1968 30 Oct 1968] 16496/68 and 51476/68 Heading F2U [Also in Division E2] In a door handle assembly in which the latchoperated shaft 18 projects from one handle 12 and into a cavity 22 in the other handle 10, there is a spring 44 within the handle 10 acting in torsion and compression to return the handle and to retain the roses against the sides of the door. The ends of the shaft are located in a square hole 26 in the handle 12 and transverse bores 20 hold a locating pin 30, while the other end is bent over and moulded into the other handle 10. The handles carry roses 32, 34 with respect to which they are rotatable. A metal bearing surface 42 is provided on the boss 14 of handle 10, and this end is secured by a washer 56 and pin 62 and a circlip. The locating pin 30 moves in sector-shaped slots in the rose 34 to limit the handle movement. The roses are located by spigots entering bores in the sides of the door. Each rose has a cover-plate (92) secured by a key (100, Fig. 4, not shown) and a grub-screw (106, Fig. 3, not shown). In a modification (Figs. 5 and 6, not shown) the shaft is screw-threaded to carry the handle 12 and a key-plate (30<SP>1</SP>) engages flats on the shaft which prevents unscrewing and acts to limit turning as does pin 30.
Patent GB-1241026-A (GB)
Title: Multi-layer centrifugal web forming machine
IPC: D21F11/04
Filed: 1968-10-31
Abstract: 1,241,026. Paper-making machine. BELOIT CORP. 31 Oct., 1968 [5 Jan., 1968], No. 51730/68. Heading D2A. A paper-making machine comprises:-a first forming roll 1, wrapped by the outside of wire 3, slurry being fed in at 9 to forming zone A; a second forming roll 7, spaced apart from the first, and wrapped by the inside of the first wire, and, over this, the outside of the second wire, 13; and a second slurry feed 17 to inject stock to the second forming zone B. The first wire may wrap the top-side or the bottom-side of the first roll, and, correspondingly, the bottom-side or the top-side of the second roll. Transfer rolls 19a, 19 may be provided, to retain the formed web on the correct wire, and these may be plain or suction. The wires may be tensioned by rolls e.g. 5, 15. The sequence of forming rolls and wires to give forming zones may be extended, e.g: zones C and D. The product web may finally be couched over 35, and removed by felt F. The forming rolls may be solid, suction, or of the cylinder mould type. Doctors and savealls such as 11 and 12 may be provided to remove and collect water from the insides of the wires.
Patent GB-1143447-A (GB)
Title: Pilot controlled level regulator
IPC: H04B3/10
Filed: 1966-11-18
Abstract: 1,143,447. Automatic gain control. INTERNATIONAL STANDARD ELECTRIC CORP. 18 Nov., 1966 [23 Nov., 1965], No. 51812/66. Heading H4R. In a pilot signal controlled automatic gain system of a telecommunications transmission path where the departure of the pilot signal from a predetermined range of tolerance resets a counter according to the extent and direction of the excursion and whose state of count determines the strength of current to an indirectly heated thermistor regulating the gain of the transmission path, the rate at which the counter is driven and hence the rate of step-wise adjustment of the thermistor heating current is such that the pilot signal on returning to the range of tolerance at least does not overshoot the opposite side of the range due to the thermal inertia of the thermistor. The thermistor responds linearly by making the duration of the equal amplitude steps of adjusting current small enough. The regulation rate is represented in Fig. 4 by the straight line C B E drawn as a tangent to the exponential response of the thermistor to a step a of adjustment at the point B, where the upper limit 20 of the tolerance range cuts the curve if the curve at D is not to overshoot the lower limit 21. If the thermistor is being adjusted at a rate given by the tangent C B E at the point B at the moment the level returns to the tolerance range and is thereafter not adjusted further, the thermistor will carry on regulating the transmission path gain exponentially according to the curve B D and so return the pilot level to just within the tolerance range. The regulation rate is therefore made constant at the value given by the gradient of the tangent which is dependent upon the width b of the tolerance range and the time constant of the thermistor. The pilot level is returned to the middle level B if the whole range is pitched lower making the gradient of the tangent, and hence the regulation rate less. The counter may comprise a number of transfluxors.
Patent GB-1112354-A (GB)
Title: Rotational shaft encoder
IPC: G01C19/38
Filed: 1966-05-04
Abstract: 1,112,354. Shaft position encoders. LITTON INDUSTRIES Inc. 4 May, 1966 [4 May, 1965], No. 51875/67. Divided out of 1,112,353. Heading G4H. Two encoder discs are mounted to rotate at different speeds by means of a planetary gear train transmitting motion from the input shaft, carrying the higher speed disc, to another shaft, carrying the lower speed disc, the discs cooperate with sliding contact assemblies, one of the shafts is coaxially mounted within the other, and the planetary gear train includes a planet gear mounted for orbital motion centred on the axis of the shafts and meshing with two other gears of the train which are coaxial with the shaft.
Patent GB-1102628-A (GB)
Title: Grinding wheel
IPC: B24D7/06
Filed: 1965-12-07
Abstract: 1,102,628. Grinding wheels. ENGELHARD HANOVIA Inc. 7 Dec., 1965 [9 Dec., 1964], No. 51908/65. Heading B3D. A grinding wheel comprises a plurality of concentric fixed abrasive annular grinding means having substantially coplanar grinding faces and having abrasive particles bonded therein, the concentration of abrasive particles in adjacent grinding means differing. A grinding wheel, for surfacing a glass sheet, comprises concentric grinding means 15-19 each having contiguous arcuate segments 20- 24. The segments 20, 21 forming the means 15, 16 are contiguous and secured to a holder 26; the segments 22, 23 forming the means 17, 18 are contiguous and secured to a holder 27; the segments 24 forming the means 19 are secured to a holder 28. The holders 26, 27, 28 are secured to an annular metal plate 12 by concentric locking strips 29, 30 and bolts 31, 32. Each arcuate segment 20-24 comprises a matrix having a predetermined concentration of abrasive grits, e.g. diamond particles, of predetermined particle size bonded therein. The concentration increases progressively from the outermost grinding means 15 (e.g. 0À3 carats/ cu. inch) to the innermost grinding means 19 (e.g. 1À1 carats/cu. inch). The particle size in the outermost grinding means 15 is greater (e.g. 44-53 microns) than that in the grinding means 16-19 (e.g. 20-35 microns). Each arcuate segment 20-24 has uniformly spaced radial grooves formed therein. The grooves in segments 20, 21 communicate with a concentric groove 35 separating segments 21, 22. The grooves in segments 22, 23 communicate with the groove 35 and with a concentric groove 36 separating segments 23, 24. The grooves in segments 24 communicate with the groove 36 and with the central area leading to a passageway 37. Coolant, e.g. 25 parts of water to 1 part of oil and emulsifier, is supplied through the passageway 37 and through apertures 38 passing slantwise through the plate 12 to the groove 36.
Patent GB-1179757-A (GB)
Title: Process for the Catalytic Conversion of Hydrocarbons
Inventor: WOLF FRIEDRICH
IPC: C07C5/41
Filed: 1967-11-15
Abstract: 1,179,757. Hydrocarbon conversion. FARBENFABRIK WOLFEN VEB. 15 Nov., 1967, No. 52013/67. Heading C5E. [Also in Division C1] Conversion of hydrocarbons is effected in the presence of a carrier and a catalytically active metal, the carrier being a porous glass produced from a non-homogeneous extractable glass by treatment with mineral acid, the glass being a SiO 2 -B 2 O 3 -Na 2 O glass. In examples (1) n-hexane is dehydrocyclized to benzene at 500‹ C. and atmospheric pressure (2) a similar process is used to make toluene from n-heptane (3) cyclohexane is dehydrogenated to yield benzene (4) toluene is hydrodealkylated to benzene and (5) benzene is condensed to yield naphthalene.
Patent GB-1410794-A (GB)
Title: Towing vehicles and semi-trailer having trailer coupling means
IPC: B62D53/04
Filed: 1972-11-13
Abstract: 1410794 Tractor/trailer couplings D U HOWARD 13 Nov 1972 [12 Nov 1971] 52346/72 Heading B7T In a coupled semi trailer and towing vehicle, a portion 13 of the trailer which extends forwardly of the trailer wheels is connected by a fifth wheel coupling means 21 to a demountable frame 20 of automobile 11, the frame 20 being fixably attachable at the surface of the body 16 to a sub-frame 17 which is mounted on the automobile frame 15, so that the point at which the weight of the semi trailer is transmitted to the automobile is forward of the rear wheels of the automobile. The sub-frame 17 has mounting plates 18, 19 for the demountable frame 20. The frame 20 may alternatively be of a cantilevered structure, Fig. 4 (not shown). Coupling means 21 comprises frame members 50, 51, Fig. 5 connected to the automobile and trailer respectively, a plate 52 mounted on the frame 50 having an aperture 53 which receives a protuberance 54 of a second plate 55 and a pivot pin 58 passing through the control apertures of the plates 52 and 55. The pivot pin 58 is connected to the plate 55 by a resilient mount 57 and terminates in a spring loaded piston 72 within a shock absorber 71. A cross member 62 connected to the frame 51 carries rollers 60, 61 which engage the plate 55, this plate having recesses which act as detents for the rollers when the automobile and the trailer are aligned. A speed responsive damp valve 72 of the shock absorber 71 shuts when the speed of the automobile exceeds a predetermined value.
Patent GB-1234888-A (GB)
Title: Improvements in endless track pulling apparatus for cables or similar objects
Inventor: COURRET BERNARD
IPC: B66D3/00
Filed: 1969-10-27
Abstract: 1,234,888. Hauling elongated elements; endless conveyers. B. COURRET. 27 Oct., 1969 [31 Dec., 1968], No. 52610/69. Headings B8A and B8B. [Also in Divisions F1 and F2] An apparatus by which a cable 2 or similar object is clamped and hauled by opposing runs of a pair of endless tracks 1 comprises longitudinal abutments 7 guiding the tracks in the said runs and a plurality of casings 27 on the abutments 7, each casing incorporating a pressure fluid arrangement whereby the track adjacent thereto is forced against the cable and is driven to haul the cable. Each of the tracks 1 which pass around idler sprockets 5 comprises articulated links 3, each having an outer face resiliently mounted and formed to suit the contour of the cable 2, and an inner face formed with two parallel cavities separated by a central rib extending along the link and frictionally engageable with the abutment 7 to act as a brake unless displaced therefrom by the fluid pressure causing the link to clamp the cable. The leading edge of each link is provided with a seal for continuous engagement with the abutment 7 whereby the cavities of adjacent links are separated. Each casing 27 includes two chambers for alignment with the two cavities of each link, and each chamber houses a piston having a circular longitudinal cross section whereby it rollingly engages the curved base profiles of the link cavities. With the application of fluid pressure into a casing 27, the pistons are forced down into the link cavities and pressure fluid also passes to the cavities downstream of the pistons whereby the link is forced away from the abutment into contact with the cable and the link is forced away from the pistons whereby the track is moved, fluid being exhausted from the cavities on the upstream side of the pistons. The relative spacing of the two abutments 7 is adjustable by jacks 8.
Patent GB-1567940-A (GB)
Title: Method and apparatus for the measurenent of relative movement between elements
IPC: G01P3/60
Filed: 1976-12-17
Abstract: The novel method is provided for the purpose of continuously monitoring the slip between the drum (1) and bearing track rings (2, 3) that is required, in particular, in the case of internally heated rotary drums provided with a fragile inner coating. For this purpose, counting pulses, the frequency of which is proportional to the driving speed, are generated on the driving device (8, 30), and after each revolution of one of the bearing track rings (2, 3) a contact pulse is generated. The number of the counting pulses generated between two clock pulses is compared with a constant number which corresponds to the number of the counting pulses generated during a complete revolution of the rotary drum. The difference between the constant number and the counting pulses provides a measure of the slip of the bearing track ring on the rotary drum, and vanishes when the bearing track ring is seated firmly on the rotary drum. <IMAGE>