baber/WOPTO huggingface dataset:
Patent GB-1461460-A (GB)
Title: Heated dryer roll for a paper machine or the like
IPC: D21F5/02
Filed: 1974-12-11
Abstract: 1461460 Drying J M VOITH GmbH 11 Dec 1974 [13 Dec 1973] 53602/74 Heading F4G [Also in Division F2] A dryer roll comprises an imperforate, heatable dryer shell 1, a pair of dryer heads 2, one at each end of the shell 1, having means 3 by which the roll is rotatably mounted on the dryer heads 2 and a tie rod 5 extending through the dryer shell 1 and interconnecting the dryer head 2, the tie rod 5 being under tension thereby preloading the dryer heads 2 against the ends of the dryer shell 1 and causing elastic deformation of the system comprising the dryer heads 2 and the tie rods 5. The bearing means may be a separate part held against the dryer heads by the tie rod or rods (Figs. 2, 3, 5 and 6, not shown) or bolted to a dryer head (Fig. 4, not shown). The tie rod or rods may be held in tension by screw-threaded means (Figs. 3, 4, 5, 6, 7, not shown) on a resiliently interposed means (Fig. 2, not shown) in which latter case the tie rod is of composite structure. The tie rod(s) may be provided with heating means to initially increase the length thereof to facilitate pretensioning of the same. The rod(s) may carry steam into the roll (Figs. 3, 4, 5, not shown) and carry condensate therefrom (Figs. 4, 5, not shown).
Patent GB-1402808-A (GB)
Title: Rotary internal combustion engine
IPC: F01B13/06
Filed: 1973-11-21
Abstract: 1402808 Gas turbine engines N & S CO 21 Nov 1973 [26 Dec 1972] 53990/73 Heading F1G The invention relates to a rotary internal combustion engine of the turbine type in which the rotor comprises a series of equiangularly-spaced, axially-extending combustion chambers, the gases from each chamber being directed on to guide vanes in stator structure which re-direct the gas on to blades formed in the end face of the rotor whereby the rotor is driven. The engine shown comprises a cylindrical rotor 10 formed with stub shafts 11, the rotor being supported by means of bearings 21 mounted in two end supports or stator members 20A, 20B which in turn are mounted on a base-plate 24. The rotor is formed with a series of axially-extending combustion chambers 15A, 15B, the chambers 15A being closed at the righthand end 16 and open at the left-hand end 17, and the chambers 15B which are disposed between adjacent chambers 15A, are closed at the left-hand end 16 and open at the right-hand end 17. The chamber outlets 17 direct combustion gases from the chambers on to guide vanes 22A, 22B formed in the stator members 20A, 20B, the guide vanes re-directing the gases on to blades 50A, 50B formed in the end-faces of the rotor whereby the rotor is driven, the gases finally discharging through outlets 23A, 23B in the stator members. Each chamber 15A, 15B has an inlet duct 18 through which a fuel/air mixture is supplied from an inlet 25 mounted on a ring member 26 mounted on the base-plate 24. Each chamber 15A, 15B has associated therewith a slide valve 30A, 30B which is movable to close-off and open the chamber. Each valve comprises a plate slidable in a groove 32 and spring-loaded outwardly to the open position by a spring 36 which engages lugs 34 formed on the plate. The valve carries a roller 35A at its outer end which co-operates with a cam surface formed in a ring member 40A, 40B which is disposed around the rotor in the plane of the valves. The cam surface comprises a cylindrical surface 41A, an inclined surface 44A, a "dwell" portion 43A and a second inclined surface 44A, the slide valve being in the fully closed position when the roller 35A is engaged with the "dwell" portion 43A. Each combustion chamber is provided with a sparkplug 45A, each plug being energized when the plug engages a contact (46A) carried in a ring member 47A, 47B disposed around the rotor. Thus in operation fuel/air mixture first enters a combustion chamber, the slide valve is closed and the sparking plug is energized to fire the mixture. The slide valve is then opened to release the gases which are directed by the stator blades 22A, 22B on to the rotor blades 50A, 50B whereby the rotor is driven.
Patent GB-1327254-A (GB)
Title: Three-way valve for directing a flow of gas
IPC: F16K11/052
Filed: 1970-11-16
Abstract: 1327254 Valves ESSO RESEARCH & ENG CO 16 Nov 1970 [1 Dec 1969] 54442/70 Heading F2V A three-way valve having an inlet 1 and two outlets 4, 5 includes a valve plate 11 actuated by double-acting cylinders 27 to close selectively either of the outlets. The valve plate comprises two spaced plates 16 and a spacer ring 14 having a plurality of pressure equalization openings 15. The outer shell 2 is made of carbon steel and the inner lining 3 of stainless steel; the space between the two is filled with a castable insulation of alumina and mineral fibres bonded with a calcium aluminate cement. The drive shafts 24 are sealed against leakage by stuffing boxes 28 supplied with purge couplings 39 which may be attached to vent lines or used for supplying a back pressure of inert gas, e.g. nitrogen.
Patent GB-1286613-A (GB)
Title: Fasteners for smooth shanks
Inventor: ENGELMANN WALTER
IPC: F16B21/20
Filed: 1970-11-16
Abstract: 1286613 Releasable fastenings W ENGELMANN 16 Nov 1970 54466/70 Heading E2B A threadless nut having one or more ratchet teeth for gripping a smooth shaft has at least one radial slot and a circumferential rim for engagement by an expanding tool for releasing the nut from the shaft. In the form shown in Figs. 1 and 2 a pair of gaps on axis 4 space a pair of ratchet grippers 5 and 6 on axis 7 engaging a shaft 3. If the nut is compressed along axis 4 the grippers 5 and 6 are lifted from the shaft to allow withdrawal. The wall may bulge out as at 15, Fig. 6, to facilitate removal, e.g. by means of a simple spanner. In the form in Fig. 4, a single circumferential gripping tooth is cut across at 13, so that a screwdriver can be inserted or spreading tongs inserted in holes 14 to release the nut.
Patent GB-1203426-A (GB)
Title: Device for destroying surface scum in sewage and sludge treatment installations
Inventor: GLASS KARL
IPC: B01F15/00
Filed: 1967-11-30
Abstract: 1,203,426. Agitating sewage sludge. WASSERWIRTSCHAFTSDIREKTION OBERE ELBE. 30 Nov., 1967, No. 54535/67. Heading B1C. Apparatus for the stirring of liquid and sludge and for the destruction of floating scum comprises a jet nozzle 11 which is rotated about the vertical axis of the hollow shaft 4 by means of which the nozzle is supplied with liquid, and simultaneously caused to pivot about the horizontal axis of the gland 9, whereby the jet traces a spiral path on the surface of the liquid or sludge. (For Figures see next column)
Patent GB-1444550-A (GB)
Title: Anti-skid systems
IPC: B60T8/84
Filed: 1972-11-25
Abstract: 1444550 Antiskid braking systems DUNLOP Ltd 15 Nov 1973 [25 Nov 1972] 54573/72 Heading F2F An antiskid brake control system for a vehicle such as an aircraft comprises separate control circuits for each braked wheel of a pair each such circuit including a wheel speed sensor 1 or la and being arranged to control the wheel braking pressure in accordance with preset criteria to alleviate skidding, each circuit also including an excess skid control circuit 9 having a means of recording the speed of the wheel under its control when the brake is first applied and progressively reducing this recorded speed signal in a predetermined manner, each circuit being so arranged that the brake cannot be reapplied until the actual speed signal from the wheel has risen to the level of the progressively reducing signal or the latter has reached zero, the circuits being intercoupled so that if during anti-skid operation the actual speed signal from a wheel sensor fails to rise to the level of the associated reducing speed signal before this reaches zero the control of the braking of that wheel is transferred to the other paired circuit. Each sensor 1, 1a produces an A.C. output which is fed to a square wave amplifier 2 and hence to a pulse generator 3 producing pulses of constant form and width. The output passes to a frequency to voltage converter 4 and is then differentiated in amplifier 5 to give a signal proportional to deceleration which is fed to a driver circuit 6 controlling a solenoid-operated brake pressure control valve 7. In order to preserve the low speed manoeuvrability of the aircraft the anti-skid control circuits are rendered inoperable below a preset minimum ground speed. The output of square wave amplifier 2, 2a is connected to a low speed detector 10 or 10a and a low speed comparator 11 or 11a arranged in series. Comparator 11 or 11a and excess skid control circuit 9 or 9a are coupled to a change-over control unit 12 or 12a the arrangement being that if both low speed comparators give an output indicating a speed below the preset minimum both control circuits are rendered inoperative. If only one comparator shows such a low speed the change-over control unit switches control to the other circuit. A test circuit includes a switch 14, run-down oscillator 15, indicator driver 16 and indicator light 18.
Patent GB-1406893-A (GB)
Title: Railways
IPC: B61B10/00
Filed: 1972-11-27
Abstract: 1406893 Railway with magnetic switch SIEMENS AG 27 Nov 1972 [30 March 1972] 54760/72 Heading B7L A railway comprises a track, preferably overhead, which branches at 9, a vehicle having a running wheel 5 formed with running surfaces for engaging rails 2, 3 of the track and with a central flange, and magnetic guiding means comprising magnets 12, 13 on the track (as shown) or vehicle and armature plates 14, 15 on the vehicle or track, respectively, whereby a selected one of the armature plates is moved into the field of the associated magnet to exert a lateral attractive force for guiding the vehicle at the branch 9. In the embodiment shown the plates 14, 15 are mounted on a rocker 16 to give a guiding force at the level of the running surfaces and noses 22, 23 engage guide rails 20, 21 to safeguard against magnet failure. An element at the end of rail 21 prevents the rocker from adopting a neutral position and deflectors 25 automatically set the rocker of vehicle approaching on the respective branch tracks. The rocker is operated by a relay 18, either doubleacting or having a return spring 19. The pivot axes 17 associated with all the wheels of a vehicle or train may be coupled to rock together. In an alternative embodiment the armature plates are not mounted on a rocker but are raised and lowered by electrical, mechanical, pneumatic or hydraulic means.
Patent GB-1364664-A (GB)
Title: Electric hair clipper with permanent magnet motor
IPC: H02K7/14
Filed: 1971-11-25
Abstract: 1364664 Dynamo-electric machines; controlling rectifiers; control of DC motors WAHL CLIPPER CORP 25 Nov 1971 [3 Dec 1970] 54833/71 Headings H2A H2J and H2F [Also in Division B4] An electric hair clipper includes a D.C. electric motor with a permanent magnet stator field assembly 30, Fig. 1, having an L/D ratio in excess 'of 1.25 and a diameter less than 1À25 inches, the motor further including a commutator 33 connected to a wound rotor 32 energized from a power supply connected to the A.C. mains and arranged to cause the motor to have a no load speed at least 15% below the design no-load speed of the motor. The hair clipper has a two part casing 11 in the lower part 12 of which the motor is mounted by straps 37, 38, 39 secured to bosses on the casing and passing over bearings 35, 36 and stator 30 respectively. The stator has a split cylindrical housing 50 in which are mounted two magnetized members 51, 52 with their magnetic axes offset by between five and fifteen degrees. The rotor drives the movable cutting blade 16 through a cam. The power supply includes a bridge rectifier 83, 84, 85, 86, Fig. 6, in the output arm of which are connected the rotor winding 56 and, as shown, an SCR 90. The conduction angle of the SCR is determined by an RC network 94, 95, 96 and 91, the voltage across capacitor 91 firing a bi-lateral diode 106 which in turn triggers the SCR. The no-load speed is set by the variable resistor 96. In use, variation of potentiometer 95 allows speed variation. 95 may be replaced by fixed resistors. The motor current is increased with mechanical load by increasing the conduction angle of SCR 90. Increasing load reduces motor speed; back e.m.f. of winding 56 falls and charging rate of capacitor 91 increases. The SCR and its associated circuitry may be replaced by a Zener diode (76) in parallel with a switch (78), Fig. 5 (not shown), the arrangement providing two speeds according to whether the switch is open or closed.
Patent GB-1338406-A (GB)
Title: Dithiols and processes for their preparation and use
IPC: C08G59/66
Filed: 1971-10-29
Abstract: 1338406 Curing epoxy resins CIBA-GEIGY (UK) Ltd 29 Get 1971 [19 Nov 1970] 55105/70 Heading C3B [Also in Division C2] Curable epoxide resins comprise either an epoxide resin and a dithiol derivative of a cycloocta-1,5-diene or of a mono- or di-methyl cycloocta-1,5-diene (see Division C2 for preparation), or an epoxide resin and an adduct formed by reaction of a dithiol with a stoichiometric deficit of an epoxide resin. The dithiols or the adducts containing them are preferably used in a proportion sufficient to supply from 0À75 to 1À25 mercaptan groups per 1,2-epoxide group of the epoxide resin to be cured. Specified epoxide resins include polyglycidyl and poly-(#-methylglycidyl) esters and ethers derived from di- or poly-carboxylic acids, or from di- or poly-hydric alcohols and phenols respectively; also poly-(N-glycidyl) compounds derived by dehydrohalogenation of the reaction products of epichlorohydrin and primary amines; triglycidyl isocyanurate; and N,N<SP>1</SP>- diglycidyl derivatives of cyclic alkylene ureas or hydantoins. Examples are given in which (a) an adduct of a cyclooctanedithiol and a poly-(N-glycidyl) amine resin and a polyglycidyl ether of 2,2,-bis-(4-hydroxyphenyl) propane, and (b) a curable composition of cyclooctane dithiol and epoxynovolac resin and diglycidyl tetrahydrophthalate are prepared.
Patent GB-1424258-A (GB)
Title: Hydraulic composition
IPC: C04B24/16
Filed: 1973-11-28
Abstract: 1424258 Cement compositions NIPPON ZEON CO Ltd 28 Nov 1973 [8 Dec 1972] 55256/73 Heading C1H 0À01 to 5% of a compound wherein R is H, C 1-4  alkyl, or COOM M being A.M. (including NH 4 ), A.E.M. or H is added cement, e.g. portland, high alumina, blast furnace slag and lime silica. Gravel (sized) is included for concrete.
Patent GB-1406555-A (GB)
Title: Devices for setting cigarettes in a same direction
IPC: B65B19/06
Filed: 1973-11-30
Abstract: 1406555 Orderly arrangement of cigarettes USINES DECOUFLE 30 Nov 1973 [27 Dec 1972] 55585/73 Heading A2C In a device for longitudinally turning over end to end cigarettes forming a continuous row about one of their ends, of the type comprising a rotary drum mounted with its axis of rotation horizontal and provided with spaced radial cavities of a width slightly greater than the diameter of the cigarettes to be received therein, means for laying the cigarettes into the cavities in mutual alignment, one behind the other and parallel to one another, a fixed guide ramp adapted to lift one end of the cigarettes moving past the ramp in the drum cavities and pivot each cigarette about its opposite end held at a fixed location in the respective cavity until the cigarette falls back into the same cavity after having been turned head over heel, and means for removing the thus turned cigarettes from the drum cavities and discharging them from the device, the improvement is characterised in that the fixed guide ramp is disposed at the lower position of the drum and reverses longitudinally the disposition of the cigarettes by centripetal movement of the cigarette end lifted by the ramp in opposition to centrifugal force generated by rotation of the drum.  As shown cigarettes R 1  to be turned over are conveyed from the initial point B 1  to point C. Thus each cigarette R 1  engaging with slightly more than one-half of its length the gap formed between a pair of adjacent segments 13 is allowed to slide on fixed circular ramps 16, 17 and retained externally by fixed curved guide members 18, 19. Beyond the part C, the filter tip end of the cigarette R 1  to be reversed bears on the side face of guide member 20 providing the fulcrum of this pivotal movement while a ramp 22 lifts the cigarette by reacting against a point adjacent the opposite end of the cigarette. Finally, a curved ramp 21 of adequate contour supports the cigarette in the vicinity of the filter-tip end thereof. The shape of ramp 22 is such that during the rotation of conveyor 11 from C to D the cigarette assumes a vertical position at D (Fig 5). During this straightening movement of the cigarette the latter is constantly retained along more than half its length between the sides of two adjacent segments 13 and uring this same phase the cigarette is urged by both gravity and centrifugal force against guide members 20, 21 and 22 (Fig 6). The cigarette is eventually laid on the curved ramp 23 at R 2  and thence the curved bottom plate 24. At E (Fig 7) rotation is complete and beyond ramps 25, 26 constrain the cigarette between segments 13 and prevent its inward escape (Fig 8).
Patent GB-1272050-A (GB)
Title: Improvements in or relating to a heat engine ventilating device
IPC: F01P7/08
Filed: 1969-04-16
Abstract: 1,272,050. Magnetic couplings. S.E.R.M.A.G. SOC. D'ETUDES ET DE RECHERCHES MAGNETIQUES. 16 April, 1969 [17 April, 1968], No. 55637/71. Divided out of 1,268,444. Heading H2A. [Also in Division F1] In the heat engine ventilating device defined by claims 1 of Specification 1,172,917, the induced member 4 from which heat must be dissipated forms the drivers member and is located at the device front end forming the intake to the far motor 7 which is integral with fan blading 13 and made of a good heat conducting material.
Patent GB-1491868-A (GB)
Title: Couplings
IPC: F16C11/06
Filed: 1974-11-14
Abstract: 1491868 Pivotal connections LUCAS INDUSTRIES Ltd 14 Nov 1974 [1 Dec 1973] 55806/73 Heading E2F Two members 11, 14 have part-spherical inter-engaging surfaces 13 and a component 16 which restricts their relative movement to a single plane. The member 11 is attached to a screw jack, the member 14 has a sleeve 15 which recives a shaft connected to a hinged aircraft wing flap, and the component 16 projects from members 11 into a groove in the member 14, confining the relative movement of the members to a planecontaining the axis of the sleeve 15.
Patent GB-1211286-A (GB)
Title: Improvements in and relating to method and equipment for cross wedge rolling
Inventor: HENCL VLADIMIR
IPC: B21H1/18
Filed: 1968-11-28
Abstract: 1,211,286. Transverse rolling. VYZKUMNY USTAV TVARECICH STROJU A TECHNOLOGIE TVARENI. 28 Nov., 1968 [2 Dec., 1967], No. 56511/68. Heading B3M. A longitudinally rotatable workpiece is rolled transversely between a pair of rolls 1, 2 carrying profiling wedge tools, the workpiece being fed axially by the tools during rolling. A developed view of a roll surface, Fig. 5, shows an inclined wedge portion 3b which feeds a length l 0  of bar stock during rolling. The length is first grooved centrally by a wedge portion 3a, is fed by the portion 3b, and is then profiled by a main section 3c. As the finished article is parted from the bar stock by a wedge 5, rolling commences on a further length l 0 . The bar stock is rotated continuously and can pass through an induction heater before rolling. A separate wedge 6 may be provided for grooving and feeding a workpiece, the wedge preferably being continuous with the wedge 5.
Patent GB-1240136-A (GB)
Title: Improvements in or relating to tree harvesters
IPC: A01G23/087
Filed: 1968-12-02
Abstract: 1,240,136. Tree harvesting machines. MASSEY-FERGUSON SERVICES N.V. 2 Dec., 1968 [4 Dec., 1967], No. 56982/68. Heading A1E. A tree harvester comprises an articulated vehicle 10 with an articulated boom assembly 24 carried by a support 22 rotatably mounted on a pedestal 20, a cutter assembly 36 being pivotally mounted at 34 at the end of a boom arm 30 and being also provided with a magazine 46, Fig. 9, for stakes 48 linked by a cable 52 wound around a winch 50. The arrangement is such that a stake 48 linked to the cable 52 first is power driven into a standing tree which is then felled by operation of a cutter blade 44, the boom assembly 24 is then moved to operate on the next tree so that a plurality of trees are felled sequentially and attached to the cable for subsequent hauling in by the winch and transportation by the vehicle to a collecting area. As shown hydraulic rams are used for all the operations including the driving of the stakes into the trees but the stakes may be driven by an explosive charge or with threaded stakes a power wrench may be used. As shown in Figs. 6, 9 the cable 52 passes through stake eyelets 60 projecting from a longitudinal slot 86 on the top wall of the magazine, the stakes 48 being moved along the magazine to an open-ended chamber 88 from which the leading stage is ejected by a hydraulic ram 96. In a modification, Fig. 12 (not shown), a short length of cable (102) is attached to each stake and the cables (102) slidably attached to the main cable 52.
Patent GB-1506702-A (GB)
Title: Grass cutting apparatus
IPC: A01D75/30
Filed: 1973-12-08
Abstract: 1506702 Gang mowers SISIS EQUIPMENT (MACCLESFIELD) Lid 5 March 1975 [8 Dec 1973] 56991/73 Heading A1F A gang mower for towing behind a tractor comprises a chassis 10, wheels 18, a central mowing unit 14 between the wheels and two outrigger units 16, the mowing units being driven from p.t.o. of the tractor with the drive to each outrigger comprising a universal joint 76, each outrigger being mounted so in use they follow ground undulations with the following movement being limited in the downward direction to within the pivoting capacity of the universal joint 76 e.g. by a bolted - on - plate 40. Each outrigger may be articulated e.g. by hinges 72 into an inoperative position. In use the p.t.o. shaft is connected by an input shaft 30 to a right angle drive conversion unit 28 having an output shaft (not shown) The output shaft carries a chain wheel which via a chain 36 drive a counter shaft 36, the latter carrying chain wheels 40, 46, 54 which via chains 42, 50, 56 drive the mowing units. There may be two forward mowing units 12. The height of the mowing units can be altered by changing the height of rollers 62 associated with each unit.
Patent GB-1098538-A (GB)
Title: A machine for reconditioning pneumatic tyres
Inventor: BEER KARL
IPC: B29B17/02
Filed: 1966-12-20
Abstract: 1,098,538. Grinding. K. BEER. Dec. 20, 1966 [Dec. 24, 1965], No. 56999/66. Heading B3D. A machine for reconditioning pneumatic tyres 6 comprises a pair of felly plates 4, means for inflating a tyre to be reconditioned, and one or more distance pieces 10 mounted on a holder 8 which is movable so that the distance between the plates can be set by engagement of a distance piece with a plate. The plates 4 comprise a rotatable felly which is mounted on axles 7 n the frame of a grinding machine and is rotatable by a motor 5. A conduit (not shown) supplies air to inflate the tyre and to operate systems 9 for lifting holders 8, 8a. The holder 8 has a plurality of pairs of distance pieces 10 of different lengths for selective engagement with a plate to determine the distance between the plates. The holder 8a carries a rotatable disc 8b having distance pieces mounted on its periphery for selective engagement with the other plate, the disc being formed with recesses between the distance pieces so as to engage the axle 7 and symmetrically locate the pieces in relation to the axle. When air is admitted to the tyre, the systems 9 lift the holders so that the distance pieces engage the plates, and when air is released from the tyre, the holders drop under their own weight.