baber/WOPTO huggingface dataset:
Patent GB-564395-A (GB)
Title: Improvements in epicyclic gearing
IPC: F16H13/06
Filed: 1943-03-22
Abstract: 564,395. Epicyclic gearing. BENNION, R. March 22, 1943, No. 4589. [Classes 80 (i) and 80 (ii)] An epicyclic gearing comprises a shaft 4 having a crank arm 2 in which is supported a wabbler shaft 1 having a gear member 5 connected universally at 8 to a shaft 7. The gear 5 makes contact at two places with a gear member 6 which places are on opposite sides of the joint 8. The connection between the gears 5, 6 may be toothed or frictional and either member 6 or 7 may be held stationary so that the other may be either the driving or driven member: The shaft 1 may be radially slidable in the crank 2 so that centrifugal force on the shaft creates pressure between the gear members 5, 6. The members 5, 6 may be conical. Thus by moving the shaft 7 axially so as to vary the two points of contact between the members 5, 6, a variable speed gearing is obtained.
Patent GB-1491387-A (GB)
Title: Powder compacting machine
IPC: B30B11/18
Filed: 1976-02-05
Abstract: 1491387 Powder compacting TAKEDA YAKUHIN KOGYO KK and FREUND INDUSTRIAL CO Ltd 5 Feb 1976 [27 Feb 1974 21 April 1975 27 June 1975] 04611/76 Heading B5A A powder compacting machine comprises rolls 10, 11, one movable relative the other to vary the nip therebetween to which powder is fed from a hopper 15 by a screw feeder 13. The roll 11 may have annular flanges 11e 11d which correspond with shoulders 10a, 10b of the roll 10. Triangular liners 17a, 17b may be located adjacent the ends of the nip and secured to a shoot 16 to obviate powder leakage. One or more pairs of barriers 18a, 18b may be attached to the shoot to distribute the powder uniformly across the nip length; such barriers may comprise strips of various shapes and cross-sections and may be replaceably and adjustably, e.g. rotatably, mounted.
Patent GB-1030216-A (GB)
Title: Dimethylquinacridone pigments
IPC: C09B67/48
Filed: 1963-02-05
Abstract: The invention comprises 2 : 9-dimethylquinacridone in a crystal form which is a yellow shade of red and has an X-ray diffraction pattern (CuK alpha) having lines (in decreasing intensity) corresponding to the spacings 16.0, 3.35, 6.43, 8.0, 3.51, 3.74 and 3.97 <\>rA.  This is made in pigment form by milling in the presence of a polar organic solvent such as xylene/butanol or crude 2 : 9-dimethyl-quinacridone in a crystal form which is a blue shade of red and has an X-ray diffraction pattern (CuK alpha) having lines (in decreasing intensity) corresponding to the spacings 17.2, 3.34, 6.39 and 8.3<\>rA, or by heating such a blude shade 2 : 9-dimethylquinacridone for example in xylene or in a polar organic solvent such as dimethylformamide, dimethylsulphoxide, methanol or ethanol and then milling the product. Either the blue shade form or the yellow shade form may be obtained directly by oxidation and ring closure concurrently or in either order of a dialkyl 2 : 5 - di - p - toluidino - 3 : 6-dihydro terephthalate and various methods are described.  Thus the blue shade form is made when a dialkyl 2 : 5-di-p-toluidinoterephthalate is heated in polyphosphoric acid and the yellow shade form when such an ester or its free acid is heated in a chlorinated benzene medium in the presence of a benzene- or alkylbenzene-sulphonic acid at 175-220 DEG  C.ALSO:In an Example, (1), diethyl 2 : 5-di-p-toluidinoterephthalate is made by heating diethyl succinate with sodium ethylate in xylene, adding p-toluidine in acetic acid, passing preheated air through the mixture and removing the xylene.
Patent GB-884030-A (GB)
Title: Method of and apparatus for sealing photoflash lamps, incandescent lamps and discharge vessels and lamps produced thereby
IPC: H01J9/40
Filed: 1960-02-10
Abstract: 884,030. Discharge tubes. PATENTTREUHAND-GESELLSCHAFT FUR ELEKTRISCHE GLUHLAMPEN. Feb. 10, 1960 [Feb. 18, 1959], No. 4676/60. Class 39(1) [Also in Groups XI and XXIII] In a method of sealing incandescent lamps, photo-flash bulbs and electric discharge tubes, especially those containing a filling of gas at above atmospheric pressure, by means of pinching jaws, the glass of the exhaust stem is preheated to render it electrically conducting and is then caused to soften by the passage of an electric current. The pre-heating may be carried out by gas flames or electrically. The pinching jaws may be used as the electrodes for the heating current. Fig. 3 shows the electrical arrangement consisting of two pinching jaws 2 engaging the exhaust stem on opposite sides and heated by means of small transformers 3 and heating clamps 4. The jaws are connected across the secondary of a transformer 5 which produces the current for softening the glass, three incandescent lamps 6 being included in the circuit as a current limiting resistance. The pinching force may be produced by compressed air cylinders operating on the pinching jaws.
Patent GB-703085-A (GB)
Title: Stamping device consisting of a rubber stamp and stamp holder
IPC: B41K1/58
Filed: 1951-02-26
Abstract: 703,085. Holders for hand stamps. WUEST, H., and ZIEGFELD, H. Feb. 26, 1951, No. 4701/51. Class 128 [Also in Group XVI] A holder for supporting hand printing stamps, (see Group XVI), has guide slots 11 corresponding to the rectangular necks 2a of the stamp handles, whereby the stamps are prevented from turning. The rearwardly slanting upwardly tapering plate 10 may have an integral base 12, a pressed-out strengthening rib 17, and flanges 16 along the top or both edges of the slots 11. Two such plates joined backto-back by a strap handle 13 and by spotwelding their bases 12 together, may be rotatable on a stand axis 15 on a foot 18.
Patent GB-1200033-A (GB)
Title: Refrigeration machine
IPC: F25B1/00
Filed: 1968-01-30
Abstract: 1,200,033. Valves. CARRIER CORP. 30 Jan., 1968 [2 Feb., 1967], No. 4701/68. Heading F2V. [Also in Division F4] In a refrigeration system in which a compressor motor 9 is cooled by refrigerant from the high pressure side of the system, the flow of such refrigerant is normally restricted by a fixed orifice 35, but under low load conditions an orifice 37 is opened to allow increased flow. Refrigerant passes to the orifices from a point immediately upstream of a float controlled expansion valve 11 and is subcoolcd by passage at 19 through the evaporator 3. After passage through one or both of the orifices refrigerant is sprayed into the motor through nozzles 23 and is returned to the evaporator through a duct 25. An automatic valve 27 ensures that the pressure in the motor is slightly above that in the evaporator to prevent leakage of lubricant from the compressor 7 into the motor housing. Opening of the orifice 37 is controlled by a valve 39 which is biased by a spring 41 towards its open position and by condenser pressure towards its closed position. The condenser communicates through line 45 with the upper side of a diaphragm 44, the lower side of which is subject to valve chamber pressure through an orifice 47.
Patent GB-687207-A (GB)
Title: Improvements relating to electron microscopes
Inventor: PAGE RICHARD STOCKBRIDGE
IPC: H01J37/21
Filed: 1950-02-23
Abstract: 687,207. Cathode-ray tubes. METROPOLITANVICKERS ELECTRICAL CO., Ltd. Jan. 5, 1951 [Feb. 23, 1950], No. 4720/50. Class 39(i) Focusing of an electron microscope is facilitated by causing the position of the apparent electron source to fluctuate rapidly along the common axis of the electron source and the objective lens so that the angle subtended by the apparent source at the object is continuously varied. A high intensity beam which will not damage the object can therefore be used in focusing with the aid of persistence of vision. The cathode a is spaced from the earthed apertured anode c by the insulating plate b. The magnetic lens d, which focuses the beam on to the specimen h carried by the rod j, carries an auxiliary winding if excited by A.C. whereby the apparent electron source is fluctuated along the axis. The beam is focused on to the fluorescent coating p on a glass plate q, by the electromagnetic lenses b, m. The spherical aberration introduced by the focusing aid means that the power of the objective lens must be subsequently increased by a calculated amount. The increase may be obtained by breaking a switch across a pre-set resistance in the objective lens circuit. The microscope is connected to an evacuating pipe k. The anode voltage and also particulars of the field windings are specified.
Patent GB-573239-A (GB)
Title: Improvements in and relating to electric eddy current driving mechanisms
IPC: G05B11/01
Filed: 1942-04-13
Abstract: 573,239. Gun mountings. BRISTOL AEROPLANE CO., Ltd., PONTING, R., HEENAN & FROUDE, Ltd., and WALKER, G. H. April 13, 1942, No. 4859. [Class 92 (i)] [Also in Group XXXV] Two electromagnetic clutches 22, 25 of the eddy current type are arranged to couple a driven shaft 14 to a driving shaft 13 so that by selective excitation of the clutches the shaft 14 may rotate in opposite directions. The invention is described as applied to the mechanism for rotating an aircraft gun turret and elevating the gun. Rheostats 33, 37 in series with the respective exciting windings 122, 125 of the clutches are jointly operable to increase the excitation of one and reduce that of the other at the same time, so that the balanced drive of the clutches is disturbed to produce a drive at a desired speed in a required direction ; after a movement of the controller to an adjustable degree the circuit of one clutch may be opened. The speed of the drive may be automatically limited as by a generator 29 geared to the driven shaft and having a constant polarity, which is opposed to that of the source of exciting current ; other kinds of speed' governor may be used, for example a centrifugal device increasing a resistance in the exciting circuit as speed increases. A resistance 34 common to both excitation circuits may adjust both excitations in common.
Patent GB-486149-A (GB)
Title: Improvements relating to vertical retorts for the carbonisation of coal and the like
IPC: C10B1/04
Filed: 1937-02-18
Abstract: 486,149. Retorts for destructive distillation ; discharging. WEST, I'. J., WEST, E., and WEST'S GAS IMPROVEMENT CO., Ltd. Feb. 18, 1937, No. 4879. [Classes 51 (ii) and 55 (i)) In an annular vertical retort for the carbonization of coal, and of the type described in Specification 408,738, in which the carbonization space a surrounds the combustion space, the charge in space a is supported on movable grates q which may be swung back to allow the hot coke to fall into rectangular coke cooling and steaming chambers r, s. The combustion space is divided into compartments b, c, d, e, f each having a gas inlet g and air inlet h, the gas being obtained from a, producer i and passing through conduits o between the coke cooling chambers to the inlets g. The air is preheated in a passage j by flues k through which pass the combustion products from the space m above the combustion spaces b to f, and the heated air passes to the combustion space through similar passages o<1>. The distillates leave through an outlet p. Two wedge-shaped portions 10 divert the coke from the ends of the annular space a into the cooling chambers r, s. The doors t, u, Fig. 7, are turned by toothed quadrants 12 actuated by a worm shaft 13, each door being counterbalanced by a weight 14. Final closing pressure is exerted by hanging links 15 actuated by eccentrics 16, and having adjustable abutments which engage the ends of arms 17 to which the doors are pivoted.
Patent GB-1331004-A (GB)
Title: Providing an electrode on an insulatiang carrier
IPC: H01J29/82
Filed: 1972-02-02
Abstract: 1331004 Printed circuits; cathode ray tubes PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 2 Feb 1972 [5 Feb 1971] 4896/72 Headings H1D and H1R A method of manufacturing an electrode on an insulating carrier comprises determining the area of the electrode by exposing an area of a photoresist layer formed on the carrier to a light beam, said light beam and photoresist layer being moved relative to one another to trace out the required area. The electrode may be part of an electrostatic deflection or focusing system for a television camera such as one with a lead monoxide target. In a preferred embodiment a cylindrical insulating carrier tube 1, Fig. 2, provided with a nickel layer on its inner surface covered by a photolacquer layer is rotatably mounted around a perforated tube 12 provided with compressed air inlets 13, 14. The carrier tube 1 is held in a clamping device 18 and is rotated by a motor 20 mounted on a block 22, the block being moved axially by a motor 24. Light (visible, infra-red or ultra violet) from a source 4 which may be a mercury lamp or laser is focused on to the inner surface of the carrier tube 1 at right angles by an objective 6 and mirror 10, mounted in a holder 28, through an aperture 29 in the tube 12 and holder 28. After exposure the photolacquer is removed by developing to expose the nickel which is etched away to leave the desired electrode pattern. Metallized through-contacts are provided in the carrier tube wall to connect the electrodes to supply lines via connecting strips formed on the outside of the tube. A semi-conductor resistive layer may be formed over and between the electrodes if desired. Any electrode pattern may be produced on a variety of carriers i.e. cones, prism shaped tubes &c., and may be formed on the outer or inner surface.
Patent GB-396825-A (GB)
Title: Improvements relating to pick holders for coal cutters
IPC: E21C35/19
Filed: 1932-02-19
Abstract: 396,825. Pick-blade fixings. LOGAN, W. A., Park Cottage, Kinghorn, Fife. Feb. 19, 1932, No. 4949. [Class 61 (i).] A pick 2a is secured in the socket 2 of a holder 1 of a chain &c. coal cutter by a key 3 and a roller 4 co-operating with an inclined face on the pick or on the key or on a member interposed between the key and the pick and engaging in a recess 6 in the socket wall 2. In the modification shown in Fig. 3 the pick 2a is locked between a U-section member 9 and the wall 11 of the socket 10 by the action of a toggle link 12 pivoted at 13 to the member 9 which has a spring arm 16 co-operating with the socket 10.
Patent GB-984924-A (GB)
Title: Means for attaching the wires connecting the colour selectors to the yarn carriers in gripper axminster looms
Inventor: WARNER JOHN FRANCIS HENRY
IPC: D03D39/02
Filed: 1963-02-07
Abstract: 984,924. Gripper Axminster looms. APPLEBY EDMONDS Ltd. Feb. 6, 1964 [Feb 7, 1963], No. 4950/63. Heading D1E.  In a gripper Axminster loom the wire 1, connecting the Jacquard lifting member to the tuft yarn carrier member, is secured to these members by means of a plate 2 provided with a socket 7 and grub screw 8.
Patent GB-828431-A (GB)
Title: Improvements in and relating to milk production
Inventor: DUNCAN GEORGE R
IPC: A01J9/04
Filed: 1958-02-15
Abstract: 828,431. Vacuum milking installations. ZERO MANUFACTURING CO. Feb. 15, 1958, No. 5009 /58. Class 84. A milking installation comprises a vacuum supply conduit 12, teat cups 16, pipes connecting the teat cups with the vacuum, a milk receptacle B connected by conduits 18 and 20 to the vacuum, means for cooling the receptacle during milking, conduits 22 and 24 from the teat cups to the receptacle, and pipes 26 and 28 for washing liquids to the receptacle. Cooling may be effected by provision of a cold water jacket 66 for the receptacle B, and may be accelerated by operation of a stirrer 46. Vacuum is applied continuously during milking and filling of the receptacle and milk therein is cooled continuously, milking is discontinued, the vacuum is released and milk is drained from the receptacle, the vacuum is reapplied and the receptacle washed while vacuum is maintained, the vacuum is released and the receptacle drained. Specification 828,432 is referred to.
Patent GB-636938-A (GB)
Title: Improvements in knitting machines
IPC: D04B15/99
Filed: 1948-02-20
Abstract: 636,938. Knitting-machines. ALLMANNA SVENSKA ELEKTRISKA AKTIEBOLAGET. Feb. 20, 1948, No. 5039. Convention date, Feb. 22, 1947. [Class 74 (ii)] A commutator driven knitting-machine is provided with an impulse relay 31, which is actuated by a magnetic disc 29 rotated by the main shaft of the machine, to actuate means for producing speed variation after a lug on a pattern chain has energized a relay 25 which connects the impulse relay to a source of current. The lug on the pattern chain operates a contact 24 which energizes a coil 251 to operate a contact 253 and a holding contact 252. The impulse relay 31 comprises contacts 311, 312, which are adapted to break contact when the contact 312 is attracted by the part 291 of the magnetic disc and to make contact when the part 292 comes opposite the contact 312. A cam 30 mounted on the main shaft is adapted to operate a lever 321 to break a contact 32 when it is desired to resume normal speed. On operation of the relay 25 the impulse relay 31 is actuated by the disc 29 to complete a circuit starting at the positive side of the supply, through contact 32 to a coil 261 which operates a holding switch 262 and normal and changespeed switches 264, 263 for varying the speed of the machine. The circuit is completed by the relay 31 and contact 253 of the relay 25. On completion of knitting at the changed speed, the cam 30 contacts the end of the lever 321 to open contact 32 which breaks the circuit controlling contacts 263, 264 and permits them to return to their original position whereupon normal speed of the machine is resumed. Specification 589,646 is referred to.
Patent GB-230068-A (GB)
IPC: F22B37/22
Filed: 1925-02-25
Abstract: 230,068. Krupp Germaniawerft Akt.- Ges., F. Feb. 37, 1924, [Convention date]. Steam and water drums. - The drums of a water-tube boiler are protected against the direct action of the furnace gases by surrounding them with shells D, each formed of an integral piece of fire-proof metal placed at a short distance from a drum. The water-tubes are passed through and expanded into the shells. The shells may have inner linings of non-conducting material.
Patent GB-271555-A (GB)
Title: An improved pine extract for medical use and process for the manufacture of the same
IPC: A61K36/13
Filed: 1926-02-23
Abstract: 271,555. Danischewsky, I. Feb. 23, 1926. Essential oils. - A soluble pine extract for medical and like purposes is prepared by mixing equal quantities of pine needle oil and alcohol, distilling up to 80‹ C., adding water containing a small proportion of sodium hydrate to the distillate, and drawing off the solution from any oil which may rise to the surface. Fluorescein may be added to the solution.
Patent GB-425258-A (GB)
Title: Improvements in and relating to electric heaters, radiators and fires
IPC: F24C7/08
Filed: 1934-02-16
Abstract: 425,258. Electric radiators. BETTS, W. M., 260, Lower Addiscombe Road, Croydon. Feb. 16, 1934, No. 5215. [Class 39 (iii)] In a self-contained radiator with one or more doors b for covering the fixed heating elements the latter are disconnected when the doors are closed. The elements are connected in parallel and coils g, h<1> are connected in series across the mains. The doors are spring or gravity controlled so as to be normally shut. The coil h<1> co-operates with a latch p so that the doors cannot be opened until the current supply is switched on from a remote point. When the doors are opened they are retained in the open position by co-operation of the coil g and an arm f attached to one of the doors. A switch may be provided in each of the supply leads to the elements, the doors opening and closing the switches. The doors may be opened and closed automatically when current is switched on and off, and may be constructed wholly or partly of asbestos. Louvre shutters may be provided instead of doors, and a bowl fire may have a shutter resembling an iris diaphragm. Specification 334,716, [Class 39 (iii)], is referred to.
Patent GB-1090433-A (GB)
Title: Improvements relating to pulse delaying circuits
Inventor: HALE RODNEY BARKER
IPC: H04N5/46
Filed: 1964-02-07
Abstract: 1,090,433. Pulse delaying. ELECTRIC & MUSICAL INDUSTRIES Ltd. Feb. 3, 1965 [Feb. 7, 1964], No. 5246/64. Heading H3T. A pulse delay circuit in which each output pulse occurs at a predetermined time before the next input pulse, independent of the pulse repetition rate, comprises a sawtooth generator giving a constant slope irrespective of the pulse repetition rate and means for detecting the peak level of the sawtooth voltage and generating an output pulse when the sawtooth voltage reaches a level which is a predetermined amount below the peak level. The sawtooth wave is generated across C3 which charges through a constant-current arrangement of transistor T1, Zener diode D1 and associated resistors. An input pulse at 1 allows transistor T2 to conduct and terminates the sawtooth. R4 and C2 provide a constant D.C. voltage which is added to the sawtooth to provide the base voltage of T3. Transistors T3 and T5 with capacitors C4 and C5 form a peak detector for the sawtooth, a desired fraction of the emitter voltage of T3 being tapped off at the moving contact of S2, transistor T4 and Zener diode D2 maintaining the current constant. The voltage at the righthand side of diode D3 is therefore less than the sawtooth peak by a predetermined amount, depending on the setting of S1 and S2, and when the sawtooth wave at the left-hand side of D3 exceeds this value the diode will conduct and provide an output pulse at 5. Alternatively (not shown) the sawtooth voltage can be passed through a large coupling capacitor and the peak value D.C. restored or clamped to a fixed potential. The invention can be used for compensating for cable delay of T.V. signals of different standards where the line repetition rate is different. The settings of switches S1 and S2 then correspond to different cable lengths.
Patent GB-562745-A (GB)
Title: Improvements in automatic electric circuit breaking devices
IPC: H01H85/38
Filed: 1943-04-01
Abstract: 562,745. Fusible cut-outs. HAEFELFINGER, A. April 1, 1943, No. 5250. [Class 38 (i)] [Also in Group XXXVII] Fusible cut-outs suitable for H.T. circuits normally carrying very low currents are adapted to be ruptured by the arc set up between the fuse and an adjacent auxiliary conductor or conductors, which may also be fusible, when the potential between them rises due to operation of another cutout in series with the fuse, the arrangement enabling a mechanically-robust construction of fuse to be employed. The fuse 6 is in series with a heating coil 8 of a bimetal latch 11 and contacts 9, 10 in the main circuit between the ring 4 and cap 2 of the fuse box 1, which may contain an arcquenching medium. The point 5 of an auxiliary conductor 16 connected to ring 4 is in proximity to the fuse 6, if desired, with an interposed dielectric screen 15. When the contacts 9, 10 open on overload, the potential increases across the gap between 5, 6 and the resulting arc destroys the fuse 6. The mechanical cut-out 7 may be replaced by an auxiliary fuse in a protective metal casing, or by an incandescent lamp, which may be in a separate container on the end of the box 1, Fig. 3 (not shown), or interpolated between the two sections of fuse 6, with the auxiliary conductor having points adjacent each section and shunting the auxiliary fuse, Fig. 2 (not shown). A spark-gap may shunt the cut-out in order to prevent excessive voltage when opened.