baber/WOPTO huggingface dataset:
Patent GB-925483-A (GB)
Title: Fuel supply apparatus for gas turbine engines
Inventor: SKELLERN JOHN
IPC: F02C9/16
Filed: 1960-08-12
Abstract: 925,483. Gas turbine plant. D. NAPIER & SON Ltd. Aug. 8, 1961 [Aug. 12, 1960], No. 28062/60. Class 110 (3). [Also in Group XXIX] A gas turbine engine of the kind in which at least part of the useful output is in the form of a mechanical drive, e.g. an engine having a compressorturbine 11, 14 and a free power turbine 15 driving a helicopter rotor 21, is supplied with fuel by a variable delivery pump controlled, at speed settings above a predetermined value, in response to power turbine speed to maintain that speed at a set value, whilst at speeds below the predetermined value fuel flow is controlled by a metering orifice the pressure difference across which is maintained constant by means operative on the fuel pump. As shown, a variable swashplate fuel pump 23 driven by the compressor turbine delivers fuel through a conduit 29 to the interior of a fixed sleeve 49 from which the fuel through a metering orifice 53 and conduit 41 to the burners 13. The orifice 53, which consists of a triangular port in a tube 46 slidable on the fixed sleeve 49, is adjustable by a speed control lever 54 which moves the tube 46 axially and by a sleeve 50 which is movable by means 52 responsive to the temperature at the inlet to the compressor. The swashplate of the fuel pump is adjusted by a servopiston 30 under the control of valves 60, 62 in series and the arrangement is such that at low speed settings a speed setting lever 69 is positioned so that the valve 62 is relieved of pressure of a spring 67 whereby it remains fully open and does not influence the servopiston 30 which is then controlled solely by the valve 60. This valve, which is actuated by a diaphragm 56 subject to the pressure drop across the metering orifice and may be influenced also by ambient pressure, therefore governs the servo piston to keep the metering pressure drop constant. At higher selected speeds, due to the action of the spring 67, the valve 62 comes into action to increase the pump displacement so that the pressure drop across the metering orifice becomes such as to hold the valve 60 fully open and to cause a spring-loaded valve 42 to open to allow fuel to by-pass the metering orifice. Speed control is then effected by the action of diaphragms 66, 71 opposing the spring 67. The diaphragm 66 is subject to a pressure differential generated by a speedresponsive device 18 on the output shaft 16 of the power turbine, whilst the diaphragm 71 is subject to the pressure differential generated centrifugally by a drilling 35 in the fuel pump rotor and is therefore a function of compressorturbine speed. An inertia governor, as described in Specification 925,482, opens a fuel dump valve 73 to stop the engine in the event of excessive acceleration. In a modification the two valves 60, 62 are replaced by a single valve acted upon, through a lever, by the diaphragms 56, 66, 71.
Patent GB-187243-A (GB)
Title: Improvements in oil pumps
IPC: F16N13/02
Filed: 1922-10-16
Abstract: 187,243. M³ller, E. L. Oct. 14, 1921, [Convention date]. Mounting.-An oil pump 1 is attached to a driving or driven machine by means of a flange 6 and centring spigot 7, so that the machine shaft 8 and pump shaft 2 are in alignment. The shafts may be connected by means of a dog 4. The pump is driven through worm gearing.
Patent GB-617133-A (GB)
Title: Improvements connected with safety devices for the bolts of firearms
IPC: F41A17/64
Filed: 1946-09-19
Abstract: 617,133. Smallarms. ZBROJOVKA BRNO NARODNI PODNIK. Sept. 19, 1946, No. 28078. Convention date, Sept. 14, 1945. [Class 119] A safety device for the breech bolt 1 of a firearm consists of a headed pin 9 which extends through the hollow bolt and striker 3 and which has a plurality of extensions adapted to engage with the striker and with a bolt-operating member 2 to prevent movement thereof, the pin passing also through a support 8 for the striker spring 7 in such manner that it retains the bolt, striker and support in the assembled condition. In the construction shown the striker is slotted at 12 for the passage of the pin and within the striker is its spring 7 which bears at its rear on the support 8 which has a D-shaped bore 13 for the pin. The flat part of this bore is to the front and it co-operates with flats on the pin so as to maintain the pin in either of its positions of adjustment when rotated by a finger-piece 10. This finger-piece carries a projection 17 which, as shown in Fig. 4, engages with a projection 4 on the striker to retract it to the safe position. In this position a cylindrical part 18 of the projection 17 engages in a groove 20 of the breech bolt and locks it against rotation. Both the bolt and striker are released when the pin is rotated to its other position.
Patent GB-519655-A (GB)
Title: Improvements in or relating to dry shavers and like apparatus
IPC: B26B19/28
Filed: 1938-09-27
Abstract: 519,655. Alternating-current motors. AMERICAN SAFETY RAZOR CORPORATION. Sept. 27, 1938, Nos. 28119 and 28122. Convention dates, Oct. 1, 1937, and Aug. 24, 1938. [Class 35] [Also in Group XXXVII] In an electric shaver or other motor-operated tool comprising a stator winding the current through which is controlled by a make-and-break device the motion is transmitted to the moving portion of the tool by a lever pivoted so as to reciprocate with respect to the stator, which lever also operates the make-and-break device. In the form shown the shaver operating lever 56 is pivoted on a pin 58 and has a slot 52 in its end engaged by a bush 50 surrounding an eccentric 48 on the shaft 18 of the armature 16 disposed between the limbs of a U-shaped stator. Two series connected interrupters 76, 80 are alternately opened when the projection 86 on the lever 56 strikes the contact carrying member 82. Alternatively, the interrupter may be parallel connected and closed alternately by the projection 86. A knurled wheel may be mounted on the armature shaft to give a manual starting impulse. In a modification, the starting device is combined with a switch for closing the stator .circuit. For this purpose a starting-lever 210, Fig. 12, with a knurled end carries a pivoted piece 224 the motion of which is limited by a stop 232. To the piece 224 is pivotal .a pin 254 passing through a projection 258 on a cranklever 240 and surrounded by a compression spring 256. Thepiece 224 and the pin 254 form a toggle which is forced through its dead-centre against the action of the spring by the lever 210. When this occurs a projection on the piece 224 strikes a tappet 234 on the motor spindle, starting the motor, and the end of the lever 240 brings two springs 246, 248 into contact, closing the motor circuit. The Specification as open to inspection under Sect. 91 also describes lighting-devices such as those described in Specification 519,717. This subject-matter does not appear in the Specification as accepted.
Patent GB-200009-A (GB)
Title: Improvements in and relating to safety locking devices for use with bolts, nuts and the like
IPC: F16B39/10
Filed: 1922-10-17
Abstract: 200,009. Morgan, M. V. Oct. 17, 1922. Locking nuts.- A nut is locked both to a bolt and to the bed or work by means of a washer A having a ball B retained in a recess in the side of the bolt hole in the washer, and having an extension C shaped to fit the sides or corner of the nut when folded upon itself between upstanding lugs D. On screwing up the nut, the ball B is forced into engagement with the bolt and the work, and the extension C 'is afterwards folded to engage the nut.
Patent GB-158405-A (GB)
Title: Improvements in or relating to the raising and lowering of curtains, scenery and the like
IPC: A63J1/02
Filed: 1919-11-13
Abstract: 158,405. Huggett, W. J., and Express Lift Co., Ltd. Nov. 13, 1919. Theatrical appliances.-Relates to apparatus for raising and lowering theatrical curtains, scenery, &c. The ropes x, to which the scenery battens are attached, pass over pulleys p to electricallyoperated hooks 11. A carrier 4 is hung from cords 5, 6 joined to a single cord 7, which passes round a fixed pulley 8, round another pulley 9 mounted on a crank 10, and is then fixed to the bracket 8<a>. The appropriate hooks 11 are connected to the carrier 4 and the crank 10 is rotated at a uniform speed by an electromotor. The scene is thus lowered, first slowly, then rapidly, and finally brought slowly to rest by the harmonic action of the crank 10. Raising is performed similarly. A second crank 10<b> is employed to work a second carrier similar to the carrier 4, so that two scenes may be worked at once.
Patent GB-685965-A (GB)
Title: Improvements in and relating to methods and apparatus for measuring the concentration of condensation nuclei
IPC: G01N15/06
Filed: 1950-11-20
Abstract: 685,965. Determining the concentration of conduction nuclei. BRITISH THOMSONHOUSTON CO., Ltd. Nov. 20, 1950 [Nov. 23, 1949], No. 28308/50. Class 40 (iii). The concentration of condensation nuclei is determined by periodically condensing a substance about the nuclei, irradiating the clouds thus formed and measuring the intensity of the radiation scattered from the clouds. As shown, air is drawn by an exhaust pump 104 through a cotton or glass wool plug 110 where any nuclei such as dust particles are removed, through a bubble humidifier 109, and into a sealed chamber 100. The nuclei-containing substance is admitted periodically into the container through a motor driven valve 119. The cooling of the moist air on entry into chamber 100 causes it to .condense provided the nuclei are present. Light enters the chamber through a sleeve and diaphragm 126, 127, and is reflected by the condensation cloud to a photo-cell so mounted in a tube 128 as to receive light reflected at an angle of 45 degrees to the incident light. Each time valve 119 is opened a condensation cloud is formed in the container so that the photocell output comprises a number of pulsations which may be amplified in an A.C. amplifier. The apparatus may be maintained at a constant temperature by external heating tubes 101. In a further embodiment, Figs. 3 and 4 (not shown), moist air containing the nuclei is drawn into a chamber through a non-return valve, the air expanding as it enters the chamber and forming drops of condensation on the nuclei. The pressure in the container is now increased when the condensation disappears and the moist air is expelled. In these figures also a lens system is described for focusing the light source, which may be a tungsten filament lamp, at a point in the container. In all embodiments the inside of the container may be blackened so as to reduce the effect of reflection from the walls, although this constant component is blocked by a capacitor in the amplifier input. The light source may be A.C. or D.C. energized but the alternating frequency should not be nearly equal that at which the condensation clouds are formed. A shorter wavelength light source may be employed. Other condensing substances than water may be used, and the atmosphere in which condensation takes place may be hydrogen or helium.
Patent GB-787334-A (GB)
Title: Push-in type electric lamp holder
IPC: H01R33/06
Filed: 1954-10-01
Abstract: 787,334. Lamp-holders. BAUER, H., EUL, H., and GUNTHER, H. Oct. 1, 1954 [Oct. 5, 1953), No. 28317/54. Class 38 (1). A push-in type lamp-holder has a number of radially-extending blades 12 pivotally mounted at the mouth of the body 1 so as to be deflected inwardly of the body by insertion of a screwthreaded lamp cap, whereupon they engage the threads to retain the cap in the holder, the lamp .being removed by unscrewing in the normal manner. The blades are urged to their inoperative or horizontal position, in which they form a shield, by an annular spring 14 engaging projections 13 on the blades, each blade also having lateral projections 11 seating in recesses 7 in an annular plate 7 to form a pivot. A ring 15 retains the projections in position. In a modification, Fig. 4a, the end of each blade 12 has a slot 19 engaged by a projection 20 on the ring 17 to form a pivot. Other methods of mounting the blades are by bending the ends over a wire ring or fixing transverse pins at the ends to replace projections 11. In Fig. 5, the projections 11 engage recesses 23 in the sides of spaced projections 22 on an annular ring 21. According to a further modification (Fig. 7, not shown), the blades are integral with an annular ring, the assembly being sufficiently flexible to permit the necessary movement of the blades.
Patent GB-1389695-A (GB)
Title: Thermoplastic material mixing
IPC: B29C48/51
Filed: 1972-06-16
Abstract: 1389695 Screw mixing head UNION CARBIDE CORP 16 June 1972 [17 June 1971] 28385/72 Heading B5A [Also in Division B1] An extrusion screw 14 terminates in a detachable mixing head 18; thermoplastic material is heated in the extruder to a flowable state and passes through radial inlet ports 34 to an internal bore 20, thence outwardly through longitudinal slots 36 to be sheared between blades 40 and the barrel 12, and into longitudinal grooves 22 where it is subjected to a circular swirling motion. The upstream ends 24 of the grooves 22 are closed and they open at the downstream ends 26 into a common chamber 28 which discharges through a breaker plate 16. The slots 36 are situated between scraping blades 38 and the shearing blades 40 which are on the trailing side of the slots.
Patent GB-1187547-A (GB)
Title: Density Gradient Fractionator
IPC: G01N33/49
Filed: 1968-06-17
Abstract: 1,187,547. Syringes. INSTRUMENTATION SPECIALTIES CO. June 17, 1968 [Nov. 29, 1967], No. 28672/68. Heading F1R. [Also in Divisions G1 and G2] Apparatus for fractionating and transferring liquid from a density gradient tube 84, used in density gradient centrifugation, comprises a piston 40 fixed to a support arm 14 of a stand 10, and a tube support 70 which is axially movable relative to the piston 40 by a lead screw 54 rotated by a synchronous electric motor 64 and working in a half nut 56 fixed to stand arm 16, axial movement of tube 84 over piston 40 displacing the tube contents through piston passage 46 tapered opening 48 preventing turbulence. The tube contents pass through a chamber 20 having quartz windows 22 through which light from an ultra violet lamp 34 passes to an optical detector 36 comprising a filter and a photo-cell. As the optical characteristics of the liquid passing through chamber 20 vary, a varying output signal is produced by detector 36, and is recorded on a chart associated with a recorder 38. The axial position of tube 84 is indicated by a moving scale 76 sliding in an adjustable fixed scale 78. Tube 84 is returned to its lowermost position by loosening half nut 56, or by using a revercible motor.
Patent GB-354605-A (GB)
IPC: H03G3/22
Filed: 1930-09-25
Abstract: 354,605. Valve amplifying circuits. MARCONI'S WIRELESS TELEGRAPH CO., Ltd., Marconi House, Strand, London.-(Assignees of Smith, T. A. ; 20, Heights Road, Ridgewood, New Jersey, U.S.A.) Sept. 25, 1930, No. 28749. Convention date, Oct. 29, 1929. [Class 40 (v).] In a system in which volume is controlled automatically by varying the anode load of an amp)ifying valve means are provided to vary at will the speed at which the control operates. The Figure shows amplifying valves 2, 2<1> the coupling resistance R2 is shunted by a control valve 6 which varies the anode load of amplifying valve 2. Auxiliary resistance R1 prevents over control while resistance R3 prevents the distortion that would occur if the plate impedance of the control valve was too low. The bias of the control valve is derived from amplified and rectified signal voltages and the time control effected by resistance 30, condenser 31, choke 32, variable resistance R and condenser 33. A grounded shield may be provided between the rectifier 4 and the control valve 6 to avoid coupling and a switch S may also be provided. to disconnect the control system. Specification 346,666 is referred to.
Patent GB-1048765-A (GB)
Title: Reset mechanism for registers
IPC: G06M1/36
Filed: 1963-07-19
Abstract: 1,048,765. Resetting counters. TOKHEIM CORPORATION. July 19, 1963 [July 30, 1962], No. 28795/63. Heading G4D. A petrol pump comprises means whereby the registers are zeroized before dispensing can begin, a lost-motion device ensuring that a pause is provided between the zeroizing and dispensing operations. The pump is operated by withdrawing a nozzle 25 from a boot 107, Fig. 1, turning a control lever 97 first counterclockwise to zeroize the registers, operating the nozzle valve to dispense fuel, returning lever 97 clockwise and then restoring the nozzle to the boot. The lever 97 cannot be turned to zeroize the registers while the nozzle is in position, nor can the nozzle be returned while the lever 97 is away from home position. After the nozzle has been removed. counterclockwise rotation of lever 97, Fig. 7, rotates control shaft 99, spring 121 acting as a toggle to ensure a sufficient rotation. A motor control cam 157 has a pin-and-slot connection to shaft 99 so as to provide 37 degrees of lost motion before beginning to operate snap-action switch 167 to energize motors 5, 95. Motor 95 drives power shaft 91, Figs. 2, 4, 7, cam 89 displacing rack-ended shafts 69, Fig. 2, to declutch the registers from meter-driven shafts and to engage them with resetting gears. Mutilated gear 273, Fig. 4, drives mutilated pinion 279 through 1¢ revolutions and then locks it, so as to effect zeroization in known manner. During this looking period cam 89 restores the drive from the meter to the cost and volume registers. Shaft 91 also drives power shaft 195 on which a cam 217 then depresses a plunger 245 to open a valve of known type whereupon fuel is permitted to flow through the nozzle under the control of a nozzle valve. The cam 217 also operates a switch 237 to de-energize motor 95 and bring shaft 91 to rest. Meanwhile fuel flow and associated cost are entered into the registers because dispenser motor 5 continues to run. At the end of dispensing the nozzle valve is closed and lever 97 is rotated clockwise to home position. After 37 degrees of lost motion cam 141 clears latching pawl 149 which then prevents reverse operation. Motor 95 and shaft 91 are then restarted to complete the cycle, after which the nozzle is returned to its boot. Several interlocks are provided to prevent reverse operation or other attempts at fraud.
Patent GB-279903-A (GB)
Title: Sealing means for rotary or centrifugal machines
IPC: F16J15/44
Filed: 1927-10-31
Abstract: 279,903. Stauber, G. Oct. 30, 1926, [Convention date]. Addition to 279,094, [Class 122 (v), Stuffing-boxes &c.]. Balancing moving parts. - In a turbine or centrifugal machine the radial clearances 2, 3 at the sides of the rotor 1 are made with straight walls converging in the direction in which leakage occurs. Axial movement of the rotor in either direction produces a rise of pressure in the corresponding clearance which restores the rotor to the medium position. The clearances mav be made of unequal sizes in order tu balance an axial thrust.
Patent GB-248464-A (GB)
Title: Improvements in electric couplings
IPC: H01R13/04
Filed: 1924-12-04
Abstract: 248,464. Chapman, A. E., and Cook, C. R. Dec. 4, 1924. Plug couplings; two-part couplings. - A hollow resilient plug is formed with a helical slot in the wall, either by cutting a tubular member, or coiling a wire or strip. The plug a may be parallel-sided or tapered and the helical material a<1> may be of square or other angular section so as to form edges a<2> that secure a good contact and clean the socket. The plug may be screw-threaded for mounting in an insulating block x and to carry a nut a<6> for attaching leads. A head or flange a<5> may be provided and transverse holes or slots a<7> may be formed to receive the leads. A clamping screw may be inserted in the axial bore or in the transverse hole to grip the lead. Specification 231,280 is referred to.
Patent GB-455881-A (GB)
Title: Process of filling vessels with beer
IPC: B67C3/02
Filed: 1935-10-22
Abstract: 455,881. Filling bottles, casks, &c. ENZINGER UNION - WERKE AKT.-GES., Pfeddersheim, near Worms-on-Rhine, Germany. Oct. 22, 1935, No. 29142. Convention date, Nov. 1, 1934. Drawings to Specification. [Classes 21 and 125 (ii)] Bottles, casks, &c. are filled with beer by an apparatus in which the conduits between the vats and the filling apparatus and the latter itself are washed out with carbon dioxide before the beer is allowed to enter. The carbondioxide is preferably a by-product from the vats. Each vessel before filling is washed out with carbon dioxide. During filling the pressure in the maturing vessel and the filling pressure in the filling apparatus is produced with carbon dioxide so that the beer maintains its condition.
Patent GB-1153434-A (GB)
Title: Multifeeder Circular Purl Knitting Machine for Producing Purl Knitwear Comprising a Rib-Purl Jacquard Patterrning
IPC: D04B9/10
Filed: 1966-06-29
Abstract: 1,153,434. Knitting-machines. MAYER & CIE MASCHINENFABRIK. 29 June, 1966 [26 Aug., 1965], No. 29167/66. Heading D1C. Patterning is produced on a superposed cylinder machine by having selecting stations 11, 11' at alternate feeding stations after the first of which he selected sliders and corresponding needles in the lower cylinder are elevated to a transfer height 16a of a track 16 to enable the needles to be received by the upper sliders which have been projected to level 17a in a cam track 17. The unselected sliders and needles in the lower cylinder having butts riding in track 15 and the sliders in the upper cylinder are then operated under stitch cams 19, 18 to cause their needles to take yarn from guide 20 and to knit. The selected sliders in the upper cam track 16 of the lower cylinder cam box although devoid of needles are maintained at an elevated height, and following the knitting station the upper cylinder sliders are lowered into transfer track 17e where the needles are retransferred back to the sliders at level 16e in track 16. Subsequently the lower sliders are all lowered under slider cam 22 and all the needles knit in the lower cylinder. In a multifeed machines the selection is made at alternate feeding stations to determine which needles knit in which cylinder whilst all the needles knit in the lower cylinder at the intermediate stations. The sliders of the bottom cylinder having transferred their needles to the upper cylinder remain at transfer level level until they receive the needles back again.
Patent GB-629217-A (GB)
Title: Improvements in or relating to the identification of lifting ropes and slings
IPC: G09F3/16
Filed: 1947-11-01
Abstract: 629,217. Spring clips. COX, A. F. Nov. 1, 1947, No. 29222. [Class 44] [Also in Group XV] A spring clip label for attachment to ropes &c. comprises springy arms A<SP>1</SP> connected by a preferably flat piece A having a barb A<SP>2</SP> pressed out to engage the rope. The ends of the arms A<SP>1</SP> may be curved as at A<SP>5</SP>, or one corner of each arm may be bent to facilitate the application of the clip to a rope. The connections between the arms A<SP>1</SP> and flat piece A may be curved to allow greater bending of the arms. Indicia are stamped on a soft metal tag which is attached to the flat piece A.
Patent GB-350356-A (GB)
Title: Improvements in or relating to brushholders for dynamo-electric machines
IPC: H01R39/38
Filed: 1930-09-30
Abstract: The finger which exerts pressure on the brush of a dynamo-electric machine has a tip of cadmium-copper alloy, preferably containing 1/2 -1 per cent of cadmium, the remainder being substantially pure copper.ALSO:The finger which exerts pressure on the brush of a dynamo-electric machine may be supported on a spindle of graphitized fibrous material such as that obtained by thinning a mixture of synthetic resin varnish and graphite with a mixture of alcohol and benzol and using the product to impregnate cloth which is subsequently dried and moulded on a mandrel under heat and pressure.