baber/WOPTO huggingface dataset:
Patent GB-257869-A (GB)
Title: Improvements in steering devices for airships
IPC: B64B1/40
Filed: 1925-06-17
Abstract: 257,869. Valkenberg, E. H. van. June 17,1925. Aerostats; steering; planes, construction of.- An airship is provided with pairs of vanes 4, 5, 6 7 normally pressed against the surface of the aerostat but adapted to be selectively moved intc the airstream to effect horizontal and vertical steering. The vanes are cambered to fit the sur. face of the airship and have the outline shown in Fig. 4, their forward ends 8 being pivoted on spindles 10 about which springs 12, 13 are wound. Channel shaped guides 14 on the inside of each blade engage rollers on the opposite ends of twc bars 15, 16 which are moved to thrust outwards the appropriate blade of each pair by racks 21 22 engaging toothed quadrants moved by cords 26, 27.
Patent GB-1022771-A (GB)
Title: Process for degassing steel in the ladle
IPC: C21C7/10
Filed: 1964-04-15
Abstract: In a process and apparatus in which a ladle of metal is placed in a subsequently evacuated vessel, the load on the vacuum pumps is lessened by heating the air initially contained in the vessel. The air may be also partially replaced by water vapour.  Heating may be carried out by a gas or oil burner, or by an electric heater; alternatively the exterior wall of the ladle may be heated prior to its positioning in the vacuum vessel.
Patent GB-763115-A (GB)
Title: Improvements in the production of hollow metal articles
Inventor: BETTERIDGE WALTER
IPC: C21D8/00
Filed: 1954-05-26
Abstract: In a process for hot-working metal having one or more holes containing a filler which flows with the metal and can subsequently be removed, the filler used is a steel of the following composition:- .Mn.5.0-20.0.per cent .Ti.1.0-10.0.per cent .C.up to 0.5.per cent Fe, with or without the usual minor constituents and impurities, the balance.  The filler composition is so chosen as to give a deformability factor not greater than 1.2, i.e. the ratio given by dividing the ratio of filler cross-sectional area before and after extrusion by the ratio of metal cross-sectional area before and after extrusion, and a recovery factor of at least 20 per cent, i.e. the ratio of the continuous length of extruded product having a hole crosssectional area deviating by not more than 5.0 per cent from the mean area to the whole length of extruded product.  The metal to be hot worked may be of the kind which is heated in use to 700 DEG C. or above and containing at least 25.0 per cent of nickel + chromium or nickel + chromium + cobalt.
Patent GB-120241-A (GB)
Title: Improvements in or relating to Cooling Arrangements for Dynamo Electric Machines.
IPC: H02K9/16
Filed: 1917-10-26
Abstract: 120,241. Mossay, P. A. H., Jacoby, H. C. E., and Enclosed Motor Co. Oct. 26, 1917. Dynamos and motors, cooling; field magnets, cooling.-The magnet ring 6, Fig. 1, of an enclosed machine is traversed by separate channels 7, 10 for the passage respectively of the hot internal air of the machine and for cooling fluid, the outer air being used in the example shown. The two streams of air are directed into the proper channels by means of fans 37, 38 and openings 11, 31 in the end shields 8, 9. The portions of the ring 6 are connected at intervals adjacent the poles 36 by bosses 35. In the modification shown in Figs. 4a and 5, the channels 7, 10 for the hot and cold air respectively are triangular in cross-section and are formed in the yoke 6. Rings 46 with openings therein are interposed between the end shields and the yoke 6. The channels 7, 10 may be rectangular in cross-section and may have webs to increase the radiating surface. Specifications 110,269 and 119,505 are referred to.
Patent GB-284920-A (GB)
Title: Improvements in mechanism for raising and lowering sliding windows
IPC: E05F11/38
Filed: 1927-06-11
Abstract: 284,920. EtorÚ, E. June 11, 1927. Vehicle-window opening and closing apparatus. -Sliding windows, more particularly of motor cars, are raised and lowered by a hand-operated pinion geared to a rack C connected to the pivoted lifting lever L. The rack C is retained in engagement with the pinion by a pivoted stirrup A. A self-sustaining device consists of a cage containing two balls or rollers separated by the spring R<1>, said cage being housed between an outer casing B and an eccentric E non-rotatably connected by slot and projection to the pinion r and engaged by cross-pins a in the spindle loosely housed in the slot. Movement of the window, wedges one of the rollers g<1>, g<2> between the eccentric E and the casing, whereas on actuation by the handle the cross-pins free the rollers and subsequently rotate the eccentric E and pinion r.
Patent GB-581967-A (GB)
Title: Improvements in and relating to gun turrets
IPC: F41A27/20
Filed: 1940-10-25
Abstract: 581,967. Gun turrets. R.A.D., Ltd., and JONES, D. G. Oct. 25, 1940, No. 15706. [Class 92 (i)] A rotatable gun turret for aircraft, marine craft and land vehicles comprises a skeleton structure formed of tubular legs trainable round a circular track and united by tubular yokes and braces to one another and to a central vertical training column. As shown, the turret is in the form of a structure comprising parallel inverted U-tubes 1 braced together and to a vertical column 15 rotatably supported on a double-thrust footstep bearing 32'carried by the floor x of the vehicle or craft. 'The downwardly-extending arms of the skeleton frame carry castor wheels 2 shrouded by wipers 14 and running on the floor x. The frame supports the gun trunnions 66, the gunner's seat 9, footrests 65, firing-pedal 64 and the control-valve 56 of a hydraulic system for aiming the gun (not shown). The control-valve is that described in Specification 579,723 and is connected to an elevation-jack 58 hinged at 61 to the frame, and to a training-motor 52 on the column, which motor drives a worm 21 engaging a fixed worm-wheel 22. Pressure and exhaust pipes 54, 55 are connected to a hydraulic distributer as described in Specification 568,118. The worm casing forms an oil bath, sealing being effected by an upstanding wiper flange 28.
Patent GB-282599-A (GB)
Title: Improvements in casement and like stays and fasteners
IPC: E05C17/38
Filed: 1927-06-13
Abstract: 282,599. Percival, S., (Williams, J. S., and Williams, S. P.). June 13, 1927. Stays.-In a combined stay and fastener for casement windows and like hinged structures in which the relatively movable plate stay-members 1, 2 are secured in an adjusted position by a spring- pressed pawl 6 on one plate engaging with the notched edge 4 of the other plate, the plate 2 secured to the window sill supports a pivoted and notched extension arm 7 that is moved into a position to form a continuation of the notched part 4 when the window is opened beyond a predetermined extent, and is moved into a closed or inoperative position when the window is closed again. The staypart 7 is moved into its extended position as the window is opened by the pawl 6 pressing against a point 7<b>. The end 7<c> is rounded so as to engage with and be moved from its extended position when the window is being closed from its widely-open position. The notches 4<b> provide tor the window to be held in an adjusted open position by engagement with the pawl, the notch 4<a> providing for the window being secured in the closed position. A stop on the free end of the arm 7 serves to engage with an extension of the pawl and limit the opening movement of the window. Finger lugs 8, 9 are provided on the rail 3 and pawl 6 respectively. The sill plate 2 is positioned as shown and its notched arms are curved about the axis of the hinge H as a centre.
Patent GB-1095266-A (GB)
Title: Improvements relating to feed units for machine tools
Inventor: WILKINSON JOHN GRANVILLE GINDE
IPC: B21D43/11
Filed: 1964-04-16
Abstract: 1,095,266. Metal sheet feeds; bar feeds. BOUCHER & CO. Ltd. May 26, 1965 [April 16, 1964], No. 15729/64. Headings B3B and B3W. A strip feed, for a power press comprises holding gripper means for alternately holding the stock so as to restrain it against movement and releasing it for movement, a feeding head including releasable feeding gripper means for periodically gripping the stock to advance it intermittently along the feed path, and a traversing means for moving the feeding head forwardly and reversely of the feed path, the feeding gripper means and the traversing means being operated by respective pressure fluid operated gripper and traverse actuating devices, and respective gripper valve means and traverse valve means being provided which are operable independently from a controlling member of the machine tool and so connected with their respectively associated gripper and traverse actuating devices as to produce operation thereof in the required sequence to effect stepwise advancement of the strip along the feed path. The device is supported by a bracket 10 which is bolted to the work table of a press and which has three bosses 14 supporting three guide rods 15, which are connected at their free ends by plates 16, 18. An anchor bracket 20 is clamped to the rods 15 and supports a fluid cylinder 25. The piston rod of the cylinder is connected to a movable bracket 26 which slides on the rods 15 and carries the feeding gripper. The top surface of the movable bracket forms one clamping surface and the lower end of the piston rod of a fluid cylinder 34 forms the co-operating clamping surface of the gripper. Retrograde movement of the metal sheet is prevented by a stationary gripper 35 of similar construction mounted on the bracket 10. The flow of fluid to the cylinders is controlled by two valves (39) and (40), Fig. 2 (not shown), which are operated by push rods actuated by two eccentrics (41) (42), Fig. 4 (not shown), which are driven from the press to which the device is attached. In a modification electropneumatic valves are used controlled by microswitches operated by cams driven by the press.
Patent GB-903579-A (GB)
Title: Improvements in or relating to colour television methods and systems
IPC: H04N9/45
Filed: 1959-05-07
Abstract: 903,579. Colour television. COMPAGNIE FRANCAISE DE TELEVISION. May 7, 1959 [May 9, 1958], No. 15733/59. Class 40 (3). The invention relates to a colour television system in which there is transmitted a continuous luminance signal together with a subcarrier wave on which are modulated two chrominance signals which alternate at line rate. In accordance with the invention, colour crawling effects and disturbance by the subcarrier in the reproduced image are prevented by reversing the alternation order of the chrominance signals during an even number of frame periods which are followed by the same number of frame periods during which the order remains unaltered but at the beginning of each of which the phase of the subcarrier is reversed. The invention is illustrated in Figs. 1 and 2 for the case where the even number of frames is four. Master generator 1 produces a subcarrier wave which is applied through a centre-tapped transformer 12 and phase inverter 8 to a chrominance modulator 15, horizontal blanking pulses which are applied to a normally open gate 2, and vertical blanking pulses which are applied to normally closed gates 3 and 5 and a square wave generator 4. Generator 4 triggers at every fourth input pulse to produce directly wave A, Fig. 2, which is applied to open gate 3, and via phase shifter 4a, wave B which is applied to open gate 5. The pulses passing through gate 3 trigger a pulse generator 6 which produces output pulses C which are applied to close gate 2, whilst the pulses D passing through gate 5 trigger back and forth a multivibrator 7 to produce wave E. The horizontal blanking pulses passing through gate 2 trigger back and forth a multivibrator 9 which operates a changeover switch 10 to control the passage of chrominance signals G and H alternately to modulator 15. The duration of each pulse C is such that an odd number of horizontal blanking pulses is prevented from passing through gate 2. As a consequence, each pulse C causes the alternation order of multivibrator 9, and hence also that of chrominance signals G and H, to be reversed. Wave E from multivibrator 7 controls inverter 8 to reverse the subcarrier phase, curve F. Thus, each four frames T1-T4 during which the chrominance order is reversed are followed by four frames T5-T8 during which the subcarrier phase is reversed. Specification 821,246 is referred to.
Patent GB-1146402-A (GB)
Title: Drive circuit for lines including inductance
IPC: H03K17/0416
Filed: 1967-04-05
Abstract: 1,146,402. Matrix drive circuits; transistor switching circuits. RADIO CORPORATION OF AMERICA. 5 April, 1967 [15 April, 1966], No. 15738/67. Headings H3B and H3T. The steepness of the leading edge of a driving pulse applied to a drive line of a memory matrix is increased by increasing the voltage applied to the line at the beginning of the pulse and subsequently reducing the voltage to the required value, using the arrangement shown in Fig. 2. Switch Q1 is closed so that the line charges to voltage V1, then switch Q2 is closed so that a rapidly increasing current flows. After a predetermined interval when the current has reached a desired level switch Q1 is opened, but current continues to flow at the desired level through diode CR until switch Q2 is opened. As shown, the switches are preferably transistors. Pulses C1, C2 for operating the switches may be produced using a chain of delay units (Fig. 3, not shown). A control circuit for transistors Q1, Q2, using further transistors, is also illustrated but not described in detail.
Patent GB-562030-A (GB)
Title: Improvements relating to draw bench dogs
IPC: B21C1/28
Filed: 1942-11-09
Abstract: 562,030. Drawing-tongs and grippers. T.I. (GROUP SERVICES), Ltd., and EVANS, D. W. T. Nov. 9, 1942, No. 15814. [Class 83 (iv)] A draw bench carriage having a hook for engagement with the chain and grippers for engaging the work, has the grippers moved into their active position by the descent of the hook to engage the chain. On the return stroke, the hook m is maintained inraised position by a pivoted link n engaging a crank-pin o on a shaft geared at r to a wheel s on the shaft of a pinion v engaging a rack bar w. A light spring 4 maintains the bar with an abutment y against the bearing 6a in which position of the part's the crank-pin is just beyond the dead centre. At the end of the stroke the grippers e engage the tag end of the work and a fixed stop 3 engages a lever 2 on'the crank-shaft and' rocks the pin o over its dead centre. The hook m; that is made specially massive, then descends, rotating the crank-shaft and the abutment' y acts through a strong spring z on an abutment x on a second rack bar i operating a shaft h carrying a lever f engaging notches in the grippers to close them on the tag. As the hook m engages the chain and takes the pull on starting the draw it rises resetting the crank-pin o.
Patent GB-631274-A (GB)
Title: Improvements in photogravure, letterpress halftone, and photo-offset colour printingprocesses and apparatus therefor
IPC: G03F3/00
Filed: 1947-06-16
Abstract: 631,274. Photo mechanical process and apparatus. SUN PRINTERS, Ltd., ALEXANDER, H. E., and COOK, C. F. June 16, 1947, No. 15829. [Classes 98 (i) and 98 (ii)] Lettering or similar matter is incorporated into reproductions made from a colour transparency original such as colour film by preparing a transparency of the desired lettering, superimposing a projected image of the lettering transparency on to a projected image of the original transparency on a screen, and then placing a series of photographic plates in the position of the screen and exposing them with the interposition of colour filters to produce the desired number of colour separation records. Printing plates are made from the records and colour printing is effected by normal methods. As shown in Fig. 2, overlapping images from the transparencies in holders 8, 8a in a double camera or enlarger are projected through lenses 9, 9a on to a focusing screen S, adjustments being made to mechanisms (not shown) operable separately in each limb of the enlarger to provide the required degree of enlargement of each transparency and to place the lettering image wherever it is wanted on the original image. The colour of the superimposed lettering on the final reproduction is varied as desired by the use of a coloured lettering transparency or colour filters with the lettering, or by varying the exposure times of such. The records produced may bear representations corresponding to the lettering in any size or colour, not necessarily a darker colour than the portions of the original on which the lettering lies. A masking frame bearing register marks thereon may be interposed between the transparencies and the focussing screen, to provide register marks on the resulting colour records. Images of two or three lettering transparencies may be projected on to the focussing screen by use of a triple or quadruple camera assembly.
Patent GB-878025-A (GB)
Title: Improvements in spring arrangements for chairs, settees and other articles of furniture
Inventor: ARGENT EDWARD OSCAR
IPC: A47C7/30
Filed: 1959-05-08
Abstract: 878,025. Spring upholstery. NO-SAG SPRING CO. (GREAT BRITAIN) Ltd. July 15, 1959 [May 8, 1959], No. 15861/59. Class 52(4). In a sinuous spring in which a separate fishmouth member 5 diverges at a point inwardly of the end of the body-supporting member 4, the fish-mouth member overlaps the member 4 from the point of divergence to its end. Specification 681,795 is referred to.
Patent GB-297143-A (GB)
Title: Improvements in or relating to machines for the manufacture of glass articles
IPC: C03B7/10
Filed: 1927-06-15
Abstract: 297,143. Hunt, S. June 15, 1927. Cutting - off excess metal. - Relates to a forming-machine of the type in which molten glass is gathered into the parison mould by suction, and consists in providing means for cooling the knife which cuts off the thread of glass that trails from the parison mould after it has made a gather. 'The knife blade 19 is secured to the lower end of a vertical shaft 13 carried by a hollow arm 3 through which cooling air is supplied. The .shaft 13 is journaled in a casing 7 which is fitted into a, bore in the arm 3, and air passes from the arm down through the casing and escapes through an outlet 18. The flow of air cools the shaft, and the outlet 18 is so shaped as to direct the escaping air on to the blade 19 when the latter is in its inoperative position. A pipe 23 is provided to enable lubricant to be supplied to the lower bearing of the shaft 13.
Patent GB-348895-A (GB)
Title: Improvements in or relating to gas compressors
IPC: F04B39/12
Filed: 1930-05-23
Abstract: 348,895. Lubricating. FORTUNE, J. A., 4463, Tholozan Avenue, and WHITSON, D. E., 4007, Botanical Avenue, both in St. Louis, and SCHAAF, E., St. Marys, both in Missouri, U.S.A. May 23, 1930, No. 15968. [Class 12 (iii).] In a gas compressor especially for refrigerating systems, an oil cup 50 supplies oil to the hub of the actuating lever 6 and a passage 52 within the lever, the cup being supplied by a pump 54 actuated by the lever. The ends of the cylinders are apertured and covered with cotton waste &c. 3 to absorb oil.
Patent GB-1014404-A (GB)
Title: Water-insoluble mono- and dis-azo dyestuffs
IPC: C09B43/11
Filed: 1964-04-17
Abstract: The invention comprises azo dyes of formula <FORM:1014404/C4-C5/1> wherein R is a hydrogen atom or an alkyl or aralkyl radical and A is an aromatic-carbocyclic or -heterocyclic radical, which may be substituted by an azo group, and the naphthalene ring and A and R may be substituted other than by sulphonic or carboxylic acid groups. The dyes are prepared by cyclizing a compound of formula <FORM:1014404/C4-C5/2> or an ester or amide thereof, by the action of a condensing agent and, if desired, alkylating or aralkylating the dye so obtained. Specified condensation agents are formic, acetic, chloroacetic, tartaric, lactic, citric, hydrochloric, sulphuric and phosphoric acids, acetic anhydride, phosphorus oxychloride and acetyl thionyl and sulphuryl chlorides.  The dyes may be used to colour synthetic polyester, polyamide, polyurethane, polystyrene, polyolefine and cellulose ester materials in the mass in yellow or red shades.  In examples, the preparation of mono and dis-azo dyes is described, some of which are further treated with dimethyl or diethyl sulphate, N-n-butyl-N-21-chloroethylaniline, benzyl chloride and its 4-methyl-, 4-methoxy-, 4-ethoxy-, 4-phenoxy-, 4-nitro-, 4-chloro-, 3,4-dichloro- and 4-phenyl-derivatives, chloroacetic acid ethyl ester or 2-dimethylaminoand diethylamino-ethyl chloride.
Patent GB-352182-A (GB)
Title: Improvements in or relating to weighing apparatus
IPC: G01G21/30
Filed: 1930-05-24
Abstract: 352,182. Weighing-apparatus. FITZPATRICK, H. D., 94, Hope Street, Glasgow.- (Naamlooze Vennootschap Maatschappij tot Vervaardiging van Snijmachines Volgens van Berkel's Patent en van Andere Werktuigen ; 33, Boezemsingel, Rotterdam, Holland.) May 24, 1930, No. 16022. [Class 143.] Indicating-mechanism; pendulum -weight apparatus.-In weighing-apparatus of the kind in which the indicator chart is enlarged by optical means, either fixed or movable under gravity relatively to the stationary parts of the apparatus, the chart is provided with a transparent dust shield independent of the indicator casing or other housing if employed. The invention is described as applied to a weighing-scale of the kind in which a transparent indicator - chart 1 is carried by a pendulous resistant 2. The chart is shielded from dust by an arcuate glass cover 10 mounted on the pendulum above the chart. The dust shield may be used in optical systems employing an opaque chart and may serve to cover the chart only when the latter is in unloaded position.
Patent GB-747021-A (GB)
Title: Improvements in and relating to roller mills, roller and breast mills or other apparatus incorporating co-operating pressure members between which substances are passed for grinding, crushing or comminuting or like purposes
Inventor: BALFOUR PETER STEPHEN ANDREW
IPC: B02C4/32
Filed: 1953-06-10
Abstract: 747,021. Reciprocating pumps. HOLMES BROS. PAINT MACHINERY, Ltd. May 27, 1954 [June 10, 1953], No. 16030/53. Addition to 743,119. Class 102(1). [Also in Group XXIX] An improvement of the invention claimed and described in the parent Specification comprises using a diaphragm 13 as a yieldable member having an area greater than that of the pump piston 8. The diaphragm is backed by a thimble 23 having a flange 33 pressed into engagement with a shoulder 34 in the casing 3 by a spring 21 adjusted by the knob 28. To permit movement of the diaphragm 13 relative to the thimble 23 during the suction stroke of the piston 8, the diaphragm is clamped between the head 39, of a bolt 38, and a flange 42 of a sleeve 37 ; the flange 42 is pressed into a groove 40 in the thimble 23 and the head 39 is pressed against the diaphragm by a spring 41 bearing against a washer carried by the bolt 38. The cylinder 6 has radial ports 9, 9a and 10, 10a communicating with the inlet and outlet 15a, 10c respectively and also connected with the pumping chamber 12 by a channel 11 ; the ports 9, 9a, 10, 10a are controlled by a groove 16 on the piston 8. In a further modification as shown in Fig. 2, the pump piston 52 is mounted in a reservoir 51 and controls an inlet port 55 in the cylinder and delivers past a non-return valve 71 to a yielding member 53 which is arranged in another cylinder 62 and is loaded by an adjustable spring 66 and controls a relief port 63. The piston 52 is actuated by a cam 56 through a rocker 56a to which is secured a member 57a in which screws a rod 57 attached to the piston. The effective stroke of the piston 52 is varied by rotating the stem 61 which is connected to the rod 57 through a pin and slot mechanism 59. Several pairs of cylinders 54, 62 may be arranged in the same reservoir. Specification 734,113, [Group XXIX], is referred to.