baber/WOPTO huggingface dataset:
Patent GB-772561-A (GB)
Title: Timing means employing relays for counting cycles of alternating current
IPC: G04F10/04
Filed: 1955-04-20
Abstract: 772,561. Measuring time intervals by counting cycles of alternating current. WESTING- HOUSE AIR BRAKE CO. April 20, 1955 [April 20, 1954], No. 11439/55. Class 106 (1). A time interval is measured by counting cycles of alternating current of known frequency the arrangement being such that the cycles to be counted begin exactly at the start of the interval. An alternating voltage E1 of sixty or hundred cycles per second is supplied to the primary P1 of a transformer TI. With the switches C1, C2 in the positions shown a saw-tooth current generator comprising capacitor 30, gas-discharge valve V2, amplifying valve V3 and phase inverter valve V4 supplies the control winding W3 of a saturable reactor the other windings W1, W2 of which are connected in series with a resistor R6 and with the secondary winding S1 of the transformer T1. The control grid of valve V2 is connected through a 90 degree phase-shifting network comprising resistors R9, R10, R11 and condensers 28, 22 and a full-wave rectifier tube VI. The arrangement is such that the voltage E2 across the primary P2 of a transformer T2 is kept substantially zero during each half-cycle of the voltage E4. Each time the voltage E 1 passes through half a cycle and the valve V2 fires the resistor R7 develops a voltage which is applied to the grid of a valve V5 which becomes conducting and passes current through the counting relays NX, PX in such a direction as to reset their contacts to their initial positions. When, at the start of the interval to be measured, the switch C1 is closed and switch C2 is opened the capacitor 30 is held at its charged level and the valves V3, V4 continue to conduct at the level established at that instant and the resulting current in the winding W3 of the saturable reactor A causes the reactor to be saturated at the level obtaining at that instant. The voltage E2 will then start at zero and follow the reference voltage and is fed via the transformer T2 to the relays PX, NX the circuits of which are so arranged that the relay PX counts the positive half-cycles of voltage E2 and relay NX counts the negative half-cycles of E2, until at the end of the time interval, the switch C1 is opened and switch C2 is closed, whereupon the saw-tooth generator again becomes operative and the valve V5 is caused to conduct to reset the contacts of the counting relays.
Patent GB-142139-A (GB)
Title: Improvements in motor tractors
IPC: B62D49/00
Filed: 1920-04-24
Abstract: 142,139. Gr³bler, E. June 9, 1917, [Convention date]. Field carriages. - The rear driving-wheels of a tractor are arranged with a clearance between them enabling the wheels of a trailer, such as a gun carriage, to be placed between them and coupled thereto. The tractor comprises front wheels 1 supporting the motor &c. which drives a transverse shaft 6, Fig. 4, driving the rear wheels 2 supported on frame members 11 through chain gearing 4 arranged externally. A temporary axle 12, Fig. 3, may be fitted between the wheels 2, and is provided with flanges 12<a> fitting the wheel hubs, and arms 13 terminating in an eye 16 fitting over the hook 17. The axle 12 may be offset and fitted with auxiliary stay members to support a trailer such as a gun carriage having wheels of different diameter and gauge from the tractor wheels.
Patent GB-527584-A (GB)
Title: Apparatus relating to jute or the like spinning machines
IPC: D01H9/00
Filed: 1939-04-15
Abstract: 527,584. Spinning and winding jute &c. HAYES, J. April 15, 1939, No. 11499. [Class 120 (ii)] A jute or like winding machine, especially one having an automatic self-doffing arrangement, is combined with a roll-winding apparatus, for winding the yarn from the doffed bobbins into rolls, located within or substantially within the lateral limits of the spinning machine. As shown the spinning machine has an automatic self-doffing arrangement of a known type and the yarn from the doffed bobbins 10 is wound directly upon spools 28 driven by drum 29 ; the spool rises as it is wound and finally leaves the open-topped bearing slots 27a and rolls down inclined ramps 30. The spool may be raised out of contact with the driving drum 29 when the bobbin supply is exhausted by a treadle 31. The yarn from the bobbin 10 passes through a hole in a traverse bar 36 and the yarns from a group of bobbins may be wound on one spool. The doffed bobbins are carried on a rail 18 which is engaged by spaced fingers 43 on a bar 33 so that the rail 18 cannot be displaced by the drag of the yarn. Specification 521,131 is referred to.
Patent GB-747533-A (GB)
Title: Method of and apparatus for the fabrication of endless metal rods from metal powders
IPC: B22F3/18
Filed: 1954-04-21
Abstract: 747,533. Powder metallurgy. HOLDING INTERCITO SOC. ANON. April 21, 1954 [April 21, 1953], No. 11521/54. Class 83 (4). In a continuous process for making rods from metal powder, the powder is fed at a controlled rate into the upper end of a continuously vibrated tube of heatresisting dielectric material wherein it is presintered by a high-frequency heating device. Metal powder is fed into a tube 1 which is longitudinally vibrated by vibrators 4 to compact the powder which is pre-sintered by a high-frequency heater 5, then passes into another heater 7 for a final sintering at 1300-1400‹ C. and finally is reduced by rolls 8 which also serve to move the rod and powder continuously through the apparatus. As shown in Fig. 2, powder is fed into the tube from a hopper 9 by a worm conveyer 10, the feeding unit being bolted to a base 13. The tube is resiliently supported by an annular diaphragm 14 secured at its inner edge to the top of the tube and at its outer edge to the base 13. Protective gas may be supplied to the feeding unit at 19 and, if desired, a protective gas casing may be provided around the pre-sintered rod 6 below the furnace 5. The walls of the tube 1 may be prevented from getting overheated by using a water-cooled coil as the high-frequency heater and by means of air jets. The tube may be subjected to a jolting action in addition to the continuous vibration.
Patent GB-1213527-A (GB)
Title: Electron probe
Inventor: MACRES VICTOR G
IPC: H01J37/20
Filed: 1968-03-08
Abstract: 1,213,527. Electron microscopes; X-ray tubes. V. G. MACRES. 8 March, 1968, No. 11538/68. Heading H1D. An electron probe comprises a short focal length electron lens 34 disposed entirely between an electron gun and the specimen S to be examined for focusing the beam on the specimen, the lens having an internal convergent configuration in the direction of electron motion and a lens centre closely adjacent the specimen. As shown the upper polepiece 36 and the lower polepiece 40 are inclined at an angle of slightly greater than 30 degrees and enclose an energizing coil (not shown). The centre of the lower polepiece is provided with an inward and downward taper to restrict the fringing fields of the lens from the space occupied by the specimen. A non-magnetic tube 52 of an optical microscope extends through the lens to the vicinity of the specimen; the microscope includes a light source (not shown) and extends to an external eyepiece 60. A small cylindrical metal shield 62 is attached to the microscope body to isolate the electron beam from any electric charges which may accumulate on the glass lens of the microscope. A plurality of specimens S are mounted on an inclined rotatable disc 74 which is mounted for translation in two directions under the control of micrometer screws 82 and 86. The disc 74 is preferably normal to the optical axis of the microscope tube 52. One of the specimens may be fluorescent to facilitate focusing, and a window 64 allows X-rays generated by a specimen to pass to associated spectrographic equipment (not shown). One of four apertured plates 24 is disposed in the path of the electron beam, to restrict the beam to a required diameter, by rotating the external knob 26 to select the required plate. Instead of an aperture, one of the plates 24 may be provided with a fluorescent surface with cross-hair line indicia 24b which may be observed through a window 28. Adjustably-supported electrostatic deflection plates 32 allow the beam to be centred or to be scanned across the specimen.
Patent GB-145924-A (GB)
Title: Improvements in the method of moulding cast metal hollow-ware, and in the means for use therein
IPC: B22C9/24
Filed: 1919-05-09
Abstract: 145,924. Clark & Co., T. & C., and Baker, A. H. May 9, 1919. Moulding processes; core-boxes.-In moulding hollow-ware, the core b<3> is formed right way up in a box E, F, Fig. 5, divided horizontally, the top half E is replaced by a half mould in its box B, Fig. 8, the whole inverted, the bottom half core-box F is then replaced 'by the other half mould in its box A, Fig. 10, and the casting made in the inverted position. The joint of the core box may be rabbeted at f<3> and the top half E is open for ramming and smoothing, and is slightly extended beyond the height required for the article. The pins f<2> of the bottom half F are adapted to engage holes in the top half and also corresponding holes in the lug of bottom mould box B. The pattern D, Fig. 3, for the bottom mould has projections d<2> to form gits, and a projection d<3> to form a print d<4> to take the extension of the core.
Patent GB-1018679-A (GB)
Title: Gyroscopic device
IPC: G01C19/32
Filed: 1964-03-20
Abstract: 1,018,679. Gyroscopic apparatus. PRECITRONIC GESELLSCHAFT FUR FEENMECHANIK UND ELECTRONIC. March 20, 1964 [Feb. 17, 1964], No. 11798/64. Heading G1C. Gyroscopic apparatus is supplied from a pump 13, or from a pressure cylinder, with a gaseous medium, e.g. air or nitrogen by way of single conduit 12, the gaseous medium serving both to drive the rotor system of the gyro, which comprises an inner rotor 11 surrounded by an outer rotor 8, and to support the inner rotor within the outer rotor. The outer rotor is mounted on bearings 6, 7 within a housing 1 gimbal-mounted in a frame 3 by a member 2. The gaseous medium is supplied by way of a three-way valve 14 which may be controlled by a control unit 42. Initially the medium is supplied only to a nozzle 16 by way of a pipe 15 to rotate the rotors 8, 11 by way of vanes 44 on the outer rotor 8, so that the rotors are brought quickly to the desired rotational speed. The valve 14 is then operated to supply air to a conduit 17 to establish the gaseous suspension for the inner rotor 11, by admission of the gaseous medium to a plenum chamber 20 within the outer rotor 8 and thus to the space 10 between the rotors. The gaseous medium leaves the space 10 by way of nozzles 25, 26 to impinge on member 27, 28 in the form of vanes carried by the housing. The gaseous medium then returns to the pump 13. In the final operational stage the supply to the nozzle 16 is cut off and the rotors are maintained in rotation by the gas flow from the nozzles 25, 26. Deflection of the inner rotor 11 with respect to the outer rotor 8 is sensed by an optical system comprising a projector 30 with a condenser lens 31, light passing to a mirror 31 carried by the outer rotor by way of a lens system 32 also carried by the rotor 8, and lens systems 34, 35 mounted at the ends of a hole 33 in the inner rotor 11. If the rotor 11 is deflected the reflected light beam 45 will strike an annular mirror surface 40 on the condenser 31 and will be reflected on an annular mirror 39 to an graduated scale 37.
Patent GB-591731-A (GB)
Title: Improvements in or relating to mounting of grinding wheels
IPC: B23Q1/70
Filed: 1945-05-11
Abstract: 591,731. Flexible couplings. BUCATTI, E. May 11, 1945, No. 11842. Convention date, Dec. 3, 1943. [Class 80 (ii)] [Also in Group XXIII] In a grinding-machine in which the grinding-wheel is carried by a tubular main shaft running in a bearing, the wheel is driven by an inner shaft extending through the bore of the main shaft which inner shaft is resiliently connected at one end to the main shaft'adjacent to the hub of the grinding-wheel and at the other end to a driving member such as a pulley. A hollow cylindrical grinding-wheel spindle 1 revolves in a bearing 2, held in its cradle 71 by stretchable straps 72, and is positioned by spring-pressed double-acting ball thrust bearings 7. A driving pulley 4, turning on bearings 14, 14a, is resiliently coupled to a shaft 26, running through the spindle 1, by means of a plastic mass 28 attached to an inner ring 27 keyed to the shaft 26 and to an outer ring 24 keyed to the pulley housing 23. A coil spring 37 axially pushes the shaft in opposition to a spring 39 acting on its other end. This end is resiliently coupled, at 25a, to a conical part 49 of the spindle 1 to which the grinding-wheel 47 is locked by a threaded ring 45 pushing a conical part 48 of the grinding-wheel hub. Lubricating oil from a pipe 53 is distributed by a groove 56 in the bore of the bearing 2 and drains eventually towards the outlet 70.
Patent GB-773164-A (GB)
Title: Improvements in brakes for spindles for textile spinning and twisting machines
IPC: D01H7/22
Filed: 1955-04-25
Abstract: 773,164. Spindle brakes. NAZIONALE COGNE SOC. PER AZIONI. April 25, 1955 [April 27, 1954], No. 11881/55. Class 120 (2). A brake for textile spinning and twisting machine spindles driven by means of a belt engaging a wharve on the spindle is characterized in that the braking action is produced with shoes which are applied in a resilient manner to the wharve of the spindle creating a couple opposed to the rotating couple of the spindle. In the arrangement shown two shoes 2 are disposed on opposite sides of the driving wharve of the spindle, on the inner faces of resilient supporting members 4. Two blade springs 8 urge the shoes 2 towards the braking position and between the open ends of the members 4 is disposed a cam 5 operable by means of a lever 6 to force the shoes away from the wharve. The lever 6 is provided with a tooth 9 which engages in an annular groove 10 in the pulley 3 in one position of the lever 6 to prevent the withdrawal of the spindle.
Patent GB-701259-A (GB)
Title: Improvements relating to model railway tracks
Inventor: VANETZIAN ALEXANDER GREGORY
IPC: A63H19/30
Filed: 1950-06-12
Abstract: 701,259. Model railway tracks &c. ROVEX PLASTICS, Ltd. Sept. 12, 1951 [June 12, 1950], No. 11951/50. Class 132(3) Model railway track sections each comprise a plastic base which has at one end a longitudinal projecting tongue and at the other end a socket. The tongue and socket have parts which are adapted by their shape and resiliency to snap into interlocking engagement when the ends of adjacent track sections are pushed - together. In Fig. 2, a tongue 28 is formed with a notch 29 and partly circular recess 31. The complementary socket of the adjoining section, Fig. 3, is confined by a transverse sill 33 and bar 34, and a partly circular boss 36 leading into a V-shaped tail 37 extends across the socket. Fig. 9 (not shown) illustrates two track sections assembled together. For effecting electrical contact between adjoining rails a spring clip 38, Fig. 12, is fitted to each rail 26 at the tongued end of the track, the clips also serving to hold the rail longitudinally. For connecting current supply to the rails, Fig. 13, conductor members 49, 50 are located in moulded walls 47, 48 on the underside of a track section, terminal sockets 51, 52 and rail clip portions being formed at the respective ends. In a modification, Fig. 18 (not shown), the interengaging parts are identical in form though reversed with respect to each other. For alignment of adjoining rail ends co-operating projections and recesses may be formed in the rail base flanges, Fig. 16 (not shown), or in the upper portion of the rails. The invention may be embodied in prints or cross-overs.
Patent GB-1011025-A (GB)
Title: An apparatus for producing melamine
Inventor: SATO HIDEO
IPC: H05B3/78
Filed: 1964-03-20
Abstract: Melamine is prepared by pyrolysis of urea in a pressure vessel 11 having top and bottom lids 21 through which pass electric heaters 31 having internal insulated elements clad by tubes of double wall construction, the inner wall being pressure and heat resistant and the outer wall being corrosive resistant.  Pumps 41, 51 respectively <PICT:1011025/C2/1> force urea and ammonia into the vessel which is maintained at a pressure of 100 atmospheres and a temperature of 400 DEG  C., the discharge being through a pipe 71. Constructional details of the vessel and rate of feed of the reactants are given in the Specification.
Patent GB-513867-A (GB)
Title: Improvements in the hydrolytic precipitation of titanium compounds and in the manufacture of titanium pigments
IPC: C01G23/053
Filed: 1938-04-21
Abstract: 513,867. Titanium dioxide ; pigments. TITAN GES. April 21, 1938, Nos. 12017, 12018, 12019, 12020 and 12021. Convention dates, April 29, 1937, Oct. 6, 1937, Nov. 5, 1937, Jan. 25,1938, and Jan. 28,1938. [Classes 1 (iii) and 95] The hydrolysis of a solution containing a titanium compound, for instance the tetrachloride, fluoride, nitrate, or sulphate, is carried out in the presence of a sol of a titanium compound having univalent anions which has been obtained directly from titanium salts having univalent anions and has been subjected to heat treatment, preferably to 70-90‹C. The sol may be obtained by adjusting a solution of titanium tetrachloride,. nitrate, or fluoride to a concentration of at most about 20 grams TiO2 per litre, and then heating the solution to above 70‹C. This produces an isodisperse sol. Alternatively, the diluted solution may be allowed to stand several days before heating, or pure tetrachloride be added to ice water and the sol so obtained be heated with or without prior dialysis. Hydrolysis is preferably effected by adding the solution to be hydrolysed to the hot sol and further heating the mixture. Hydrolysis'may be effected continuously, or by separately heating the sol and solution to be hydrolysed in spiral tubes, and after admixture, continuing the heating in a further spiral tube. In hydrolysing a titanium sulphate solution, the amount of sol used for hydrolysis may be decreased when the TiO2content of the solution increases above 140 grams per litre. Hydrolysis may be effected in the presence of carriers such as barium sulphate, and by washing and calcining the products of hydrolysis pigments having high tinting strength and covering power are obtained. Numerous examples of operation are given. The Specification, as open to inspection under Sect. 91, comprises also the following subject matter. The use, for assisting hydrolysis, of any sol of a titanium compound having univalent anions which has been heated, and an example of preparing the sol by precipitation with ammonia from a dilute tetrachloride solution, washing free from electrolytes, and dispersion by hydrochloric acid under . heat. This subject-matter does not appear in the Specification as accepted.
Patent GB-252017-A (GB)
Title: A process of producing iron and other carbon-binding metals and alloys thereof having a very low percentage of carbon
IPC: C21B13/12
Filed: 1926-05-10
Abstract: 252,017. Cornelius, H. G. E. May 11, 1925, [Convention date]. Extracting. - In a method of obtaining lowcarbon iron and alloys thereof, from oxide ores by reduction in an electric furnace or briquettes of finely-divided ore and reducing agents which are wholly or partly carbonaceous, the reducing agent is used in an amount less than that theoretically required for the reduction of the whole of the ore present. The deficiency may be 5 per cent or more. A number of charts may be used, one. containing iron ore and the others ores of alloying metals. The slag in the electric furnace may be made viscous or its electric conductivity decreased by suitable additions, and the metallic oxides therein may be reduced by the addition of ferro-silicon or other reducing agents prior to tapping; and the temperature of the furnace may be increased by operating the furnace prior to tapping with resistance and with the electrodes immersed in the slag. The additions to the slag may be in briquette form. The molten metal obtained may be deoxidized during or after tapping by lowcarbon additions such as ferro-manganese. Specification 227,435 is referred to.
Patent GB-295417-A (GB)
Title: Improvements in apparatus for the electro-magnetic separation of ores
IPC: B03C1/14
Filed: 1927-05-05
Abstract: 295,417. Davies, A. May 5, 1927. Magnetic separators.-In a magnetic separator of the kind in which the material is fed by a conveyer between a rotating upper magnet and a lower fixed one, a preliminary separation is produced by one or more supplementary magnets which are energized by flux leakage from the main magnets. 'The supplementary magnets 6 in the form of concentric rings and separated by distance pieces 7 are secured to the head 8 carrying the upper magnets 1, 2, 3 which rotate over shaking feed trays 5 and the caps 15 of pole pieces 13 which are provided with individual windings 14. The separted materials collected by the rings 1, 2, 3 are discharged into troughs which are arranged concentrically with regard to each other in the spaces between the trays 5 and outside the magnetic influence of the poles 13. The residue left on the conveyer is also discharged into a shoot. The points 4 of the rings 1, 2 and 3 may be constructed as described in Specifications 105,354 or 277,210.
Patent GB-901390-A (GB)
Title: Improvements in and relating to apparatus for measuring or controlling the thickness of thin transparent film
IPC: G01B11/06
Filed: 1961-04-05
Abstract: 901,390. Electric selective signalling systems. INTERNATIONAL BUSINESS MACHINES CORPORATION. April 5, 1961 [July 5, 1960], No. 12110/61. Class 40 (1). In a system for measuring the thickness of a thin transparent film as it is deposited or removed from a transparent substrate monochromatic light is passed through the film and the successive maxima and minima in the light intensity caused by optical interference as the thickness varies are counted. As described, light 22, Fig. 1, is passed through a film 18 being vapour-deposited from a source 12. As the thickness increases the light, and hence the electric signal from a photo-electric cell 20, varies as indicated in Fig. 3, the successive maxima and minima occurring approximately after increments of thickness equal to a quarter of the light wavelength. There maxima and minima are detected by a circuit including diodes 30, 32, capacitor 42 and comparator 58, to count down a pre-set counter, whereby when the film reaches a predetermined thickness further deposition can be stopped. The detailed operation of the detection circuit is as follows. When the equipment is turned on, with a film of zero thickness, the output of amplifier 28 rises to 10 volts and capacitor 42 charges towards this voltage via diode 32. When the capacitor reaches the output of amplifier 28 (at time To, Fig. 3) its output will have fallen because the film is gradually being deposited. However, once capacitor 42 has reached amplifier's 28 output it cannot follow the amplifiers out negatively owing to the unidirectional property of diode 32. A voltage therefore appears across diode 32 and is applied, via an amplifier 52, to a voltage comparator which detects when the voltage has risen to 0.1 volts and then actuates the relay circuitry which changes over switch 38. Capacitor 42 then follows the output of amplifier 28 negatively, on diode 30, but is unable to follow it positively. As soon as the amplifier out rises therefore a voltage appears across diode 30 causing the relay circuitry to change over switch 38 again, when the cycle repeats. Each change over of switch 38 causes one pulse to be counted.