baber/WOPTO huggingface dataset:
Patent GB-527943-A (GB)
Title: Arrangement in the drive of rotary printing presses
IPC: H02P5/50
Filed: 1939-04-24
Abstract: 527,943. Automatic speed control systems. ALLMANNA SVENSKA ELEKTRISKA AKTIEBOLAGET. April 24, 1939, No. 12262. Convention date, April 25, 1938. [Class 38 (iv)] A three-phase commutator motor 2 driving a master section 10 of a rotary printing- press is speed-controlled by a brush-shifting motor 3 which is automatically started, stopped, and reversed through a balanced relay 18. One coil 22 is energized from a circuit containing an adjustable potentiometer 29 and a tachometer generator 14 running at a speed proportionate to that of the master section. An opposing coil 23 is energized from a tachometer generator 6 on the shaft of the brushshifting motor. A similar three-phase commutator motor 35 driving a subordinate section 42 of the printing machinery is speed-controlled by a brushshifting motor 38 associated with a balanced relay 50. One coil 48 of the relay 50 is energized from a circuit arranged, under synchronized running conditions, to contain a tachometer generator 45 and a potentiometer 82 fed through a rectifier bridge 80 by equalization current circulating between two synchronism-indicating machines 12 and 43. The-tachometer voltage is opposed by the equalization voltage in order to regulate the motor 35 to a speed proportional to the difference between the two quantities.
Patent GB-541060-A (GB)
Title: Improvements in variable-speed gearing
IPC: F16H61/02
Filed: 1940-07-29
Abstract: 541,060. Variable-speed gearing. WATSON, S. C. July 29, 1940, No. 12276. [Class 80 (ii)] Gearing, stated to give a solid drive when the load torque is below the driving torque and a reduced speed when the load torque exceeds the driving torque, comprises a driving member 19 carrying planetary bevel pinions 27 gearing with sun wheels 14, 16. Sun wheel 16 and a helical or worm gear 2 are fixed to an intermediate shaft 1. Gear 2 engages planet gears 12 carried in a loose frame 7 to which the sun wheel 14 is fixed, the gears 12 also engaging an internal annular gear 35 fixed to a driven casing 28. The latter is freely supported on bearings 34, 30 and the shaft 1 has an extension 4 journalled in the driving member 19.
Patent GB-342217-A (GB)
Title: Protection of networks against excess voltage in relation to earth potential
IPC: H02J3/04
Filed: 1930-04-17
Abstract: 342,217. Supply systems. COMPAGNIE GENERALE D'ELECTRICITE, 54, Rue La BoÙtie, Paris. April 17, 1930, No. 12281. Convention date, May 1, 1929. [Class 38 (iv).] Where two transmission lines l<1>, l<2> at different voltages are installed on the same posts of an over. head line, one line l<1> forming, for example, part of a distribution network or ring main the other part of which mav be underground, the lower voltage line is connected by 1:1 ratio transformers t to the remainder of the network, &c. The windings connected to the overhead portion are insulated for the voltage of the higher tension line.
Patent GB-322152-A (GB)
Title: Improvements in cigarette cartons or packages
IPC: B65D85/10
Filed: 1929-04-20
Abstract: 322,152. Pilon, C. A., and Schwartz, R. April 20, 1929. Boxes made from special blanks; contents, delivering. - In a cardboard or like cigarette carton having an opening through which one or more cigarettes may be ejected at a time by a slidable carrier disposed in the carton, the carrier 21 is provided with a side flap or flaps 22 which make slidable contact with the adjacent side or sides of the carton and give substantial angular support and guidance to the carrier. The part 25 of the carrier which supports the cigarettes to be ejected is formed with side flaps 24 which are secured to the flaps 22 and the top 23 of the carrier has a tongue 26 which engages a slit 26<a> in the top of the carton when the top 23 is folded over the flap 20<a> closing the delivery opening 20. The carton is formed from a blank bent and secured into tubular form with a hinged top 16.
Patent GB-812844-A (GB)
Title: Improvements in and a mould for the production from thermoplastic synthetic materials of cellular articles having closed cells
IPC: B29C37/00
Filed: 1957-04-16
Abstract: 812,844. Moulding cellular materials. CHEMISCHE WERKE HœLS A.G. April 16, 1957 [Dec. 12, 1956], No. 12360/57. Class 87(2). In a process for manufacturing cellular articles having closed cells wherein a mass of thermoplastic synthetic material containing a blowing agent is heated in a closed mould to plasticise it and to activate the blowing agent, the mass being then cooled, removed from the mould, and then subsequently heated to expand it, the cavity of the mould is completely filled with the mass and thermal expansion of the latter is permitted by providing an elastic cushion within the mould. The elastic cushion may consist of a body of air such as that contained in an annular groove 1 in the wall of a mould 5, 6, Fig. 1, for forming circular slabs, the body of air communicating through restricted passages 2 with the mould cavity 4. The passages 2 may be formed by flattening circumferentially spaced portions of the upper surface, of a packing ring 3, Fig. 3. During the heating of the mass some of the material passes from the cavity 4 through the passages 2 into the groove 1, the volume of which may be 5 to 30 per cent. of that of the cavity 4. The surplus material in the groove 1 may subsequently be utilized in form of small pieces. Alternatively the elastic cushion may consist of a body of air separated from the mould cavity by a resilient metal membrane, e.g. of copper, and preferably in the upper part of the mould. In examples are described the manufacture of slabs of cellular polyvinyl chloride material in a mould of the construction illustrated.
Patent GB-541742-A (GB)
Title: Improvements in two-way transmission systems
IPC: H04B3/20
Filed: 1940-07-31
Abstract: 541,742. Repeaters. ASSOCIATED ELECTRIC LABORATORIES, Inc. July 31, 1940, No. 12370. Convention date, Aug. 14, 1939. [Class 40 (iv)] In a two-way repeater in which one path is normally disabled or partially disabled, an attenuating device 60 is inserted between the output of the transmitting amplifier and the line so that outgoing speech causes equal and opposite effects on a control relay by currents from the receiving and transmitting paths whereas currents received from the line are amplified in the receiving path and attenuated in the transmitting path so that the control effects are unbalanced. In the arrangement shown, a moving-coil loud-speaker 10 acts as receiver and transmitter and is normally in effective association with the transmitting amplifier 31. Transmitted speech, rectified by a neon tube 47 with adjustable biassing arrangements, energizes one winding 21 of a differential relay, the other winding 22 however being equally energized by the same speech after attenuation at 60, amplification in the receiving path and rectification by a similar neon tube 48. Received speech on the other hand is ineffective, owing to the attenuator 60, on the transmitting path rectifier and so causes the operation of the relay to disable the transmitting path and shunt winding 21 to give a suitable hangover.
Patent GB-1501132-A (GB)
Title: Electroslag casting of a metal roll
IPC: B23K25/00
Filed: 1975-03-25
Abstract: 1501132 Casting composite articles HITACHI METALS Ltd 25 March 1975 [29 March 1974 17 May 1974 29 Nov 1974 (2)] 12437/75 Heading B3F A process 1 for producing a roll comprises placing horizontally a core body 1 made of cast steel or steel based Adamite containing 0À5 to 2À5% C, said core body having one or more circumferential grooves, feeding a consumable electrode 3 into said groove or grooves while rotating said core body to thereby obtain by electro-slag casting a deposited metal buildup over the the surface or surfaces of said groove or grooves to fill same, said deposited metal containing, in weight per cent, from 1À5 to 2À5% C, from 0À2 to 1À0% Si, from 0À5 to 1À0% Mn, from 0.5 to 3À0% Cr, from 0À2 to 3À0% Mo, the balance including Fe and impurities, and heat treating the roll at a temperature of between 500 and 700C. The deposited metal may also include less than 2À0% V. The thickness of the deposited metal ranges from a minimum of 20 mm. to a maximum of 1/10 of the original diameter of the core. In the electroslag casting process a start tab 2 made of graphite is used, a consumable electrode 3 is used to initially melt a slag layer 6, a non- consumable electrode 12 is used to further heat up the slag and adjacent part of the roll core 1, and then the consumable electrode is once again fed as the core is rotated. The start tab 2 is removed to leave a sloping face 11 which assists in the terminating stage of filling the groove as the slag floats up and into a space formed by a copper plate 9. The deposited metal is supported and cooled by a water cooled copper plate 4.
Patent GB-768362-A (GB)
Title: Improvements in or relating to machines adapted for folding margins of leather or like material
IPC: A43D8/40
Filed: 1954-04-30
Abstract: <PICT:0768362/III/1> <PICT:0768362/III/2> In a machine for folding margins of leather (see Group VIII), molten thermoplastic cement is fed intermittently to the folded edge of the workpiece W, Fig. 5, through outlets 72 in the creaser foot 26 fed through a passage 70 controlled by a needle valve 76. Valve 76 is opened, against a spring 98, by a cable 104 acting via a lever 90 pivoted at 92.  Cable 104 is connected to a slide 108, Fig. 4, movable, against a spring 112, by a laterally-extending lever 124.  Lever 124 also operates, by releasing pressure on a pin 126, to close a connection between a power-operated drive mechanism and a gear pump mounted on the creaser foot carrier 132.  The gear pump is driven in steps, at such times as pin 126 is released from pressure by lever 124, by mechanism similar to that described for a corresponding purpose in Specification 749,660. Lever 124 is operatorcontrolled, e.g. by means of a treadle-actuated switch which energizes a solenoid to start feeding of the work.  A strip or rod of thermoplastic material is supplied by feed wheels through a tube 262 to a heated casing 190 containing a cement supply unit including the gear pump; the latter delivers molten cement, past a thermostaticallycontrolled electric heater in carrier 132, to valve 76.
Patent GB-324866-A (GB)
Title: Improvements in or relating to valve seat grinding devices
IPC: B24B15/00
Filed: 1929-04-23
Abstract: 324,866. Hammond, R. J., Oswald, A. R.. J., and Sharp, A. B. April 23, 1929. Disc apparatus.-In a valve seat grinding machine the grinding wheel is driven through a flexible and resilient coupling. The grinding wheel 6 is attached to a rod 1, which engages the valve rod bush, by a member 7. A driven member 13 is connected to the member 7 by a spring 15. A ball and socket joint on the ends of the members 7. 13 transmits the drive. The spring is a forced fit on the members 7, 13 and holds the parts forming the ball and socket joint in contact.
Patent GB-1493797-A (GB)
Title: Trailer having a longitudinally adjustable undercarriage
IPC: B62D53/06
Filed: 1976-03-29
Abstract: 1493797 Vehicle suspensions N A MASSEY 29 March 1976 12547/76 Heading B7D In a semi-trailer having a tandem axle undercarriage 16 which can be moved along the chassis of the semi-trailer to allow the semi-trailer to be tipped rearwardly for easy loading, an angle iron 30 is welded to a flange plate 26 beneath each chassis side member 11 to form a pair of spaced parallel tracks which engage grooved rollers 32 rotatably mounted in undercarriage side members 18, a locking device on the undercarriage includes a spring-loaded pin engageable in one of a series of slots 47 for locking the undercarriage in a desired position, and retaining pins 43 mounted on the undercarriage extend above the flange plates 26 to limit upward movement of the semi-trailer relative to the undercarriage.
Patent GB-603439-A (GB)
Title: Improvements in or relating to processes of producing immediately saleable, dry fumaric acid, and the improved dry fumaric acid resulting therefrom
IPC: C07C51/353
Filed: 1945-05-18
Abstract: Dry fumaric acid is prepared from a form of maleic acid comprising either maleic acid or maleic anhydride in admixture with sufficient water to hydrate it to maleic acid by sweeping adsorbed oxygen from said form of maleic acid by means of an inert non-oxidizing gas and then heating said form of maleic acid in a gaseous non-oxidizing atmosphere inert to the compounds present at a temperature within the range of 145 DEG  to 260 DEG  C. for a time sufficient to convert substantially all said form of maleic acid into fumaric acid.  Inert gaseous fluids, which are non-oxidizing, include nitrogen, carbon dioxide, helium, neon and vapours of hydrocarbons and ethers which are non-reactive with either maleic or fumaric acids, for example, ethyl ether and aliphatic hydrocarbons having less than five carbon atoms.  In comparative experiments, three glass containers are charged with maleic acid and the first is sealed in air, the second is swept with oxygen to remove air and ensure an atmosphere of pure oxygen and then sealed p  and the third container is similarly swept with nitrogen and sealed; the containers are then heated at 195 DEG to 210 DEG  C. for two hours, the products obtained in the first two containers being of a light and dark tan colour respectively, whereas that obtained in the third container is white and does not require purification.
Patent GB-235851-A (GB)
Title: Improvements in or relating to furnaces
IPC: F23M11/02
Filed: 1925-05-14
Abstract: 235,851. Balthasar, J., and Viola, A. June 19, 1924, [Convention date]. Emission of flames and hot gases through working apertures, preventing; door frames. - The frame 7, Fig. 2, of a fire-door 6 is provided with a tubular passage 8 to which air is admitted by a pipe 14 and from which the air is delivered in converging streams through apertures 9 to prevent the escape of heat and gases from the furnace when the door is opened. The supply of air is controlled by valves actuated by movement of the door in such a manner that the relationship between door and valve movements varies with different door positions in a predetermined manner. In the arrangement shown in Figs. 2 and 3, the supply of air is controlled by valves 16 the spindles of which are connected by a rod 20. The valve adjacent the door hinge is provided with a stem 26 carrying an arm 28 pivoted to a rod 29 the upper end of which is slotted and provided with rollers adapted to engage with a spiral cam 35 secured to a vertical post 33 mounted on the door. During the opening of the door, the passage of the cam between the rollers lifts the rod 29 and rotates the arm 28 to open the valves. The valve remote from the door hinge has its spindle provided with a squared stem to enable the valves to be operated independently of the door.
Patent GB-867239-A (GB)
Title: Ceramic arc plate construction
IPC: H01H9/34
Filed: 1958-04-21
Abstract: 867,239. Arc rupturing in switches. I-T-E CIRCUIT BREAKER CO. April 21, 1958 [Oct. 9, 1957], No. 12597/58. Class 38 (5). A ceramic arc plate has a shape permitting it to be compression moulded in all steel dies using a mixture of ceramic material having a water content of less than 5%, the plate having a cross-section comprising a thin central portion 20 joined to integral flanges 17, 18 by gradually sloping surfaces. The flanges may extend on one or both sides of the plate and the sloping surfaces may be flat or concave. In the latter case the surface of the central portion and the sloping surfaces form a continuously curved concave surface. Specifications 776,798, 791,613 and 797,412 are referred to.
Patent GB-684785-A (GB)
Title: Improvements in or relating to sun glasses and other protective spectacles and eye pieces
IPC: G02B5/20
Filed: 1950-05-22
Abstract: 684,785. Colour filters. HERAEUS GES., W. C. May 22, 1950 [May 20, 1949; July 23, 1949; Nov. 28, 1949; March 1, 1950], No. 12807/50. Class 97 (i). A transparent eye-piece, e.g. of glass, for spectacles or other protective glasses, is coated on one or both surfaces by vapour deposition in a high vacuum with one or more filter layers containing a lower oxide of silicon, particularly silicon monoxide. Successive layers of silicon monoxide and a metal such as iron, molybdenum or tungsten may be used. Alternatively titanium, manganese, cobalt, nickel or silicon may be evaporated or deposited by cathode spluttering on to the surface and the layer covered with an evaporated coating of a lower oxide of silicon. Successive layers of iron and silicon monoxide may be applied by vaporization, or these two substances may be vaporized simultaneously from separate sources or from the same source, thereby forming a layer in which the iron is embedded in the silicon monoxide. Vanadium, copper, thorium, tantalum, chromium, or precious metals, may be substituted for iron. Alternatively a mixture comprising silicon, quartz, and manganese, iron, copper, silver or gold may be evaporated to form a composite layer. Other substances which can be used in this process are beryllium, zinc, cadmium, aluminium, indium, germanium, tin, lead, titanium, antimony, molybdenum or tungsten. The layers may be deposited on one side area only of the glass for use in anti-dazzle spectacles for drivers of road vehicles, or the density of the deposit may decrease from the top to the bottom of the lens.
Patent GB-1223364-A (GB)
Title: Improvements in and relating to sheet cutting arrangements
IPC: G03D15/04
Filed: 1969-03-11
Abstract: 1,223,364. Cutting apparatus. RICOH, K. K. 11 March, 1969 [19 March, 1968], No. 12822/69. Heading B4B. A cutting apparatus for sheet material, e.g. a photocopying machine, comprises a rotatable cutter blade 4, a stationary cutter blade 8 having a curved cutting edge which is inclined to the direction of feed of the sheet and which lies along the cylindrical surface generated when the rotatable cutter blade is rotated, and means for maintaining the peripheral speed of the cutting edge of the rotatable blade equal to the speed at which a sheet is fed into the apparatus. The cutter blade 4 is mounted on a shaft 2 which is rotated, via a gearing 28, 29, 30, 31, 32, by means of a driven feed roller 24; the feed roller 24 together with a second feed roller 25, are driven by means of a roller 27 via a belt 26. The gear train is such that the peripheral speeds of the feed rollers 24, 25 and the edge of the blade 4 are equal. The gear 32 is coupled to the shaft 2 through an electromagnetic clutch. The blade 8 is mounted on a pivoted shaft 11 and may be adjusted in relation to the blade 4 by means of a screw 17 acting against springs 14, 15. In operation, when a sheet is fed between guide plates 19, 20 a measuring device is operative which then actuates the electromagnetic clutch so that the blade 4 rotates to cut the sheet. In a modification, the blade 8 can be made thin in order to resiliently contact the blade 4, thereby dispensing with the springs 14, 15.
Patent GB-543153-A (GB)
Title: Ultra high frequency oscillator
IPC: H04B1/03
Filed: 1940-08-12
Abstract: 543,153. Valve generating circuits. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. Aug. 12, 1940, No. 12892. Convention date, Aug. 10, 1939. [Classes 40 (iii) and 40 (v)] A generator comprises a single concentric line resonator associated with a plurality of valves having their anodes earthed and their inputs coupled to.the line. A further concentric line may be coupled to the cathodes for deriving the output energy or a line may be associated with each cathode circuit. Fig. 4 shows a concentric line 1, 2 and coupling loops 3 connected to the valve grid terminal 48 and a further concentric line 2, 13 provided with coupling loops 12 through which pass the filament leads, fine tuning to tune out at least part of the reactance of the filament lead being effected by adjusting screw 28. The anode terminals 47 of the valves 4 are earthed by a strip 18 and the end-plate 19. The line 2, 13 is tuned by a plate 151 arranged at a high impedance point and the line 1, 2, is tuned by the bellows 31, screw 33 and spring 34. The output is taken from loop 14. In a modification, Fig. 7, separate concentric lines 36, 37 are provided for each valve filament tuned by slider 38 and with the output taken from a connection 41 to the line and a balanced output by dividing at a point 42 and arranging that the lines 43, 44 differ in length by one-half wavelength. Fig. 10 shows the mounting of the filament concentric line 36, 37 and the tuning slider S. A centre tapping on each filament is preferably conductively connected to the associated resonant circuit and the ends of each filament capacitatively connected thereto.
Patent GB-312056-A (GB)
Filed: 1929-04-25
Abstract: 312,056. Weaver Manufacturing Co., (Assignees of Weaver, I. A.). May 18, 1928, [Convention date]. Gauging-apparatus.-A vehicle wheel alignment indicator comprises a pair of members mounted to be movable toward and from one another by the rolling contact of the wheels therewith, equalizing means connecting said members together, and an indicator to show the movements of said equalizing means. A shallow elongated base 11 adapted to rest on a garage floor and provided with oppositely inclined approaches 12 supports on antifriction bearings two aligned plates 13, 14 connected by rods 18, 19 of equal length to an equalizer bar 16 mounted on a pivot 17, the bar 16 being provided with a pointer 21 moving over a scale 22. The vehicle whose wheels pass over the device at the same time is free to move laterally in either direction and misalignment of the wheels is shown on the indicator.
Patent GB-203736-A (GB)
Title: Improvements in or relating to wall brackets
IPC: A47H1/14
Filed: 1922-05-09
Abstract: 203,736. Bibby, F. May 9, 1922. Curtains, suspending.-A curtain is supported on a wire 11 attached at each end to a screwed eyebolt 10 which passes through the cantilever arm 7 of a bracket with two wall arms 6, 7 at right-angles to each other. Thearms 7 may have notches 13 to receive a rod 14 supporting a covering frill. Reference has been directed by the Comptroller to Specifications 2839/84, 10443/02, 16216/04, 130,794, and 148,647.
Patent GB-101545-A (GB)
Title: Improvements in or relating to Carburettors for Explosion Engines.
Inventor: FEROLDI ENRICO
IPC: F02M3/08
Filed: 1916-09-15
Abstract: 101,545. Feroldi, E. Sept. 21, 1915, [Convention date]. Addition to 100,644, [Class 7 (iii), Internal-combustion engines, Carburetting-apparatus &c. for]. Valve members and faces.-To obtain different rates of opening at the two edges of a butterfly throttle valve 24 the wings are inclined to one another instead of being, as is usual, in one plane. In the closed position of the throttle valve one of the wings is perpendicular to the wall of the passage controlled by the valve, and the inclined wing closes a lateral port 27.
Patent GB-735923-A (GB)
Title: Improvements in or relating to hinges for the side pieces of spectacles and eye protectors
IPC: G02C5/14
Filed: 1953-05-11
Abstract: 735,923. Spectacle frames. FLEMING, Ltd., J. & R., FLEMING, R. A., and ELDERTON, H. W. R. May 11, 1954 [May 11, 1953], No. 13126/53. Class 97 (1). To provide a hinge for the side pieces of spectacles and eye protectors the end of the side piece 10 is bifurcated to form portions 14 and 15 between which a member 12 of the spectacle frame 13 is pivoted by a pin 11, the ends of the bifurcations being joined together at 18 to form a closed loop. The loop may be formed by flattening the end of the stem 16 and bending it into a loop, and joining it at 17 by solder or the like. The end 18 may be arranged to form a strip limiting opening movement of the sidepiece.