baber/WOPTO huggingface dataset:
Patent GB-296694-A (GB)
Title: Improvements in the method of working with hydrocarbons at high temperatures
IPC: C07C1/12
Filed: 1927-03-03
Abstract: 296,694. Johnson, J. Y., (I. G. Farbenindustrie Akt.-Ges.). March 3, 1927. Divided on 296,683. Hydrocarbons.-The hot parts of apparatus in which hydrocarbons are treated at high temperature are coated with lustrous carbon to prevent deposition of soot. Lustrous carbon (Glanzkohl) is a form of carbon deposited from hydrocarbons at temperatures above 650‹ C. The process is generally applicable to catalytic and other processes involving heat treatment of hydrocarbons, including cracking processes. According to an example, a mixture of ethylene, hydrogen, and carbon dioxide is passed through a copper tube containing silica gel coated with lustrous carbon, whereupon benzene hydrocarbons are produced.
Patent GB-104663-A (GB)
Title: Improvements relating to Kinematographic Films or Bands.
Inventor: DREYFUS LOUIS
IPC: G03D15/00
Filed: 1916-12-28
Abstract: 104,663. Dreyfus, L. Dec. 28, 1916. Kinematograph films are provided with integral marginal projections in order to strengthen the films and protect the pictures. The preferred form of projection consists of transverse ribs a<4>, Fig. 11, or of transverse pairs of points, but the projections may be formed by cranking the edges of the film, or may consist of one or a pair of continuous or broken ribs a<1>, Fig. 5, along each edge. In other forms, the tongues produced in perforating the sprocket-holes in the film are folded against and made to adhere to one face of the film as at a<3>, Fig. 8, in which the marginal edges are also folded as at a<2>.
Patent GB-262721-A (GB)
Title: Mechanism for the disengaging connection of two machine elements
IPC: F16D13/04
Filed: 1926-07-26
Abstract: 262,721. Todt & Sohn, W. Dec. 10, 1925, [Convention date]. Operating clutches. - In operating-means for disengageable machine elements, shown as applied to a cone clutch 9, 10 for a winch, a sleeve 2, non-rotatable in a bearing 4 and mounted between abutments 5, 6 on the shaft 1, supports the shaft and is secured at the end 3 to coact with a manually-rotatable and axially-movable nut 7, a flange 8 of which engages the shiftable clutch member 9, so that the operating thrust is confined to the shaft 1 and does not act on the bearings 4, 12. A slight modification, applicable to coupling an electromotor to a worm gear, is described.
Patent GB-1201792-A (GB)
Title: Direct-positive photographic silver halide materials
Inventor: BYERLEY BERNARD LEONARD JOHN
IPC: G03C1/485
Filed: 1967-04-22
Abstract: 1,201,792. Direct-positive photographic silver halide materials. KODAK Ltd. May 2, 1968 [April 22, 1967], No.18646/67. Heading G2C. Direct-positive photographic materials comprise an emulsion or emulsion layer containing fogged silver halide grains containing bismuth. The emulsion is made by forming silver halide grains in the presence of a bismuth salt such as bismuth nitrate at a pH in the range of 0 to 5 and then fogging the grains so formed, e.g. with thiourea dioxide or stannous chloride alone or together with a gold compound such as potassium chloroaurate or ammonium hexachloropalladate.
Patent GB-1183176-A (GB)
Title: Process for the Development of Photographic Silver Images
IPC: G03C5/30
Filed: 1968-04-19
Abstract: 1,183,176. Photographic development. CIBA Ltd. April 19, 1968 [April 20, 1967], No.18659/68. Heading G2C. Silver salts are photographically developed in an acid medium by the reduction product of a 1, 4-diazine which has at most been reduced to the dihydro stage. Preferred diazines from which developers are prepared are pyrazines, quinoxalines and phenazines of formula: in which either (1)R 1-4  are each H, carboxyl or C 1-3  alkyl or (2) R 1  and R 2  complete an optionally substituted benzo ring, and R 3  and R 4  are each H, alkyl, phenyl, heterocyclyl, acetyl or benzyl or together complete a benzo ring which is either unsubstituted or contains an NH 2  group in one α-position and an OH or NH 2  group in the other α-position. Other diazines are also listed. The diazine may be chemically or electrolytically reduced in situ (e.g. by Cr SO 4 , sodium dithionite or hydrogenation), or a stable reduced diazine used. The reduced diazine may be used in a developer solution (e.g. one containing 0À1 molar H 2 SO 4 , acetone, dimethylformamide or ethanol as solvent, optionally a buffer to maintain a pH of 0-4 and KBr, KCNS or phenylmercaptotetrazole), a monobath, or a silver halide material (e.g. in the form of a dispersion, a solution in a crystalloid or in microcapsules). The developers are particularly useful in silver-dye-bleach processes (since the unreacted developer can bleach azo and other reducible dyes), black-and-white processes and silver-salt diffusion processes, but may also be used in other processes.
Patent GB-1079522-A (GB)
Title: Improvements in or relating to timer-controlled electric switches
Inventor: SAINTSBURY-GREEN PETER
IPC: G04C23/34
Filed: 1964-05-05
Abstract: 1,079,522. Time switches. ENGEL & GIBBS Ltd. July 9, 1965 [May 5, 1964], No. 18689/64. Heading H2B. Adjustable tappets 28a, 29a and 30a, 31a driven by a synchronous motor (14) (Fig. 2, not shown) act on a nylon cradle 33 pivoted at 47 on a base-plate 18 so as to move a mercury switch (32, Fig. 1, not shown) embedded therein in clear silicon rubber (34), alternately on and off. A spring 35 urges the cradle 33 to the " off " position (Fig. 4, not shown) and the " on " tappets 28a and 30a engage an upstanding projection 46 at respective preset times to pivot the cradle into the position shown, where it is retained by the nose 42 of a pawl 38 urged by spring 40 to overlie a projection 44 on cradle 33. The " off " tappets 29a and 31a engage a part 43 of pawl 38 to release the cradle suddenly at respective preset times. A pin 49 projects forwardly from cradle 33 through a slot in a transparent cover (12, Fig. 2, not shown) for manual actuation of the switch. A day-omission star wheel 51 is stepped by " off " tappet 31a (which is longer than tappet 29a for this purpose) and screws 54 may be inserted in selected ones of seven tapped holes 53 to engage the tip 56 of pawl 38 such that the switch cannot be retained closed on the selected days.
Patent GB-457938-A (GB)
Title: A new or improved process for the prevention of corrosion in aircraft
IPC: C23C4/18
Filed: 1935-07-01
Abstract: Corrosion of metallic parts of aircraft, e.g. the fuselage and wing structures, is prevented by first preparing the surface by sandblasting or etching, then applying by a metal spraying process a coating, not exceeding four thousandths of an inch in thickness, of metal containing not less than 98 per cent of aluminium and then applying to the surface of this coating, by painting, spraying, or dipping, a coating of a liquid which on evaporation will leave a film of grease, such as lanoline solution, or a coating of lacquer or air-drying synthetic lacquer. The sandblasting may be effected with sand, flint, or angular steel grit.  When the surface is prepared by etching, either chemical or electrochemical, the surface may subsequently be treated, e.g. by heating or steaming, to remove all traces of acid &c., prior to the application of the metal coating.
Patent GB-613356-A (GB)
Title: Improvements relating to hard alloys resistant to oxidation at elevated temperatures
IPC: C22C29/06
Filed: 1946-06-21
Abstract: Sintered hard alloys consist of a solid solution or mixed crystals of chromium carbide and titanium carbide containing 5-35 per cent, preferably 10-20 per cent, of chromium carbide to which has been added an auxiliary binder in amount from 10-60 per cent, preferably 40-50 per cent, of the whole composition, such auxiliary binder being chosen from one or more of the metals cobalt, nickel and iron.  The alloy may be made by heating a mixture of titanium dioxide, chromic oxide and finely divided carbon, preferably in the form of lampblack, in a reducing atmosphere or vacuum, e.g., to a temperature of about 2000 DEG C., reducing the double carbide so produced to a fine powder, intimately mixing the powder with the binder metal, pressing the mixture to ingots which are presintered in reducing atmosphere or vacuum, machining the ingots to pieces of the desired shape and finally sintering in the said atmosphere, e.g. at 1250 DEG -1450 DEG C.
Patent GB-469384-A (GB)
Title: Means for distributing ballast beneath and raising railway track sleepers
IPC: E01B27/18
Filed: 1935-12-19
Abstract: 469,384. Packing ballast under sleepers. LAMBLIN, G. Dec. 19, 1935, No. 18803/37. Divided out of 469,316. [Class 104 (ii)] Ballast supported on a tray 1 adjacent the sleeper is forced under the sleeper by a fork-like device, having prongs 5 of triangular cross-section.
Patent GB-1023632-A (GB)
Title: Zoom lenses
IPC: G02B15/14
Filed: 1964-05-06
Abstract: 1,023,632. Zoom lenses. EASTMAN KODAK CO. May 6, 1964 [May 6, 1963], No. 18814/64. Heading G2J. A zoom lens having a geometric mean F of the limiting values of its effective focal length has a main objective whose focal length lies between 0. 6F and 1. 4F and three components in front of it, the first being a cemented doublet I, II, and the second and third simple lenses III and IV, the first and third components being coupled, as by rod 20, to move as a unit during zooming and the second component III either remaining stationary or else moving a distance not greater than 0. 1F. The lenses I-IV have Specifications within the following limits As shown the main objective consists of a single negative element with a positive element on either side, the three elements being in edge contact. On rotating a sleeve 24 by handle 25, the cam groove 23 and follower 22 causes lens mount 21 to slide along rods such as 12 carrying with it ring 16 and thus lenses I, II, the small movement of lens III being brought about by cam groove 33 and follower 32. The front component I, II is carried by lens mount 15 threaded into ring 16 so as to be adjustable for focussing. Optical data are provided for four examples.
Patent GB-403897-A (GB)
Title: Improvements in screw propellers
IPC: B64C11/36
Filed: 1932-09-23
Abstract: 403,897. Air -screws. HEENAN & FROUDE, Ltd., and WALKER, G. H., Worcester Engineering Works, Worcester. Sept. 23, 1932, No. 18918/33. Divided on 403,199. [Class 114.] In a variable pitch air-screw of the kind where the stems of the blades are extended through the boss to overlap, the extensions of the stems are supported at their extremities by journalled guides attached to or formed within the interior of each stem, one of which surrounds the other at one end, and the other surrounds the first at other end and a thrust bearing is placed centrally between the inner ends of the blades, one member of bearing being carried by one stem and the other by the second stem. The blades 1, 1a have hollow extensions 1b, 1c, supported by guides 2, 2a formed within the extension. A thrust bearing 3 is mounted between the two stems to take centrifugal forces. The extension 1c is provided with a collar 9 located between the faces of the bearing 10 and having adjustable supports in the casing. The extensions are provided with worm sectors 12, 12a engaged by worms 13 and are geared to the pitch adjustment mechanism. Specification 403,199 is referred to.
Patent GB-999372-A (GB)
Title: Tape feed
IPC: B41J33/34
Filed: 1962-03-23
Abstract: 999,372. Typewriters &c. S.C.M. CORPORATION. March 23, 1962 [March 10, 1961], No. 18998/64. Divided out of 999,371. Heading B6F. A paper tape 40 is fed in steps past the printing station of a high-speed printer by two solenoid-actuated mechanisms which are energized alternately. The solenoids 103, 104 are energized from respective monostable circuits providing pulses of the appropriate duration, a bi-stable circuit triggering the monostable circuits alternately. The feed mechanism comprises a link 138 and pawl 150 which, when the associated solenoid is energized rotates a ratchet wheel 152 fixed to a shaft 174. The arrangement is such that actuation of either of the pawls causes feed roller 176 to rotate one step in the same direction. A spring leaf 168 prevents back-lash.
Patent GB-716680-A (GB)
Title: Improvements in windshields for friction lighters
IPC: F23Q2/50
Filed: 1952-07-28
Abstract: 716,680. Cigarette lighters. COLIBRI LIGHTERS. Ltd., and LOWENTHAL, H. July 14, 1953 [July 28, 1952], No. 19032/52. Class 75 (3) The windshield of a friction lighter comprises two or more telescopically-mounted parts which, when extended, will at least partly enclose the flame but when telescopically closed will expose the flame either wholly or to a greater extent than when extended. As shown in Fig. 2, three parts 15, 16, 17 each U-shaped in plan, are pivoted together by pins 18. Outwardly projecting lips 19 on the upper edges of parts 15, 16 engage with inwardly projecting lips 20 on the lower edges of parts 16, 17 to limit the extended movement and the lips 19 engage with inwardly directed bulges 21 of parts 16 and 17 to tend yieldably to resist movements of the parts in their extreme open and closed positions. One or more of the parts may have perforations for the passage of air to the flame. The shield may be detachably mounted by providing the innermost part 15 with an inwardly directed flange 29, Fig. 7, wider near the loop end and having a slot 27 adapted for engagement with an undercut 28 on the nipple 25, Fig. 8, the slot 27 having a narrower portion 26 arranged to pass over the undercut for the limbs of the part 15 resiliently to resist disengagement of the slot from the undercut. In the modification shown in Fig. 9 the telescoping parts 30, 31, 32 are cylinders each with a gap in one side, all the gaps being aligned. This shield may be fixed by passing the nipple through the opening in the flange 33 before securing to the body of the lighter or by means of a flange and undercut as in Figs. 7 and 8.
Patent GB-1301712-A (GB)
IPC: F16K31/524
Filed: 1970-04-21
Abstract: 1301712 Valves KAYSER-WERK GmbH 21 April 1970 [22 April 1969] 19054/70 Heading F2V A manually operated fluid control valve is operated by a pin 34 extending from an operating shaft 35 to ride over ramps and into and out of notches 26, 29 between two axially spaced discs 24, 28 whereby the valve is opened or closed each time the shaft 35 is rotated through 90 degrees by its operating handle 8. The operating shaft extends through the two discs into a hole 37 in a slidable spring- loaded jumper member 14 to which the washer 5 is secured by a screw 9. The discs 24, 28 have hexagonal peripheries for engagement with a correspondingly shaped portion 15 of the valve body in which they are retained by a ring 31 and a crimped edge 33. A portion 38 of square cross-section may be provided on the operating shaft to engage the handle or a transverse pin may be used to engage resilient clips inside the handle.
Patent GB-1141457-A (GB)
Title: Improvements in or relating to screw-threading workpieces
Inventor: FITTON DEREK EDWIN
IPC: B23G1/16
Filed: 1966-04-30
Abstract: 1,141,457. Screwing device. GEARAIDE Ltd. 30 May, 1967 [30 April, 1966], No. 19100/66. Heading B3N. A tap or die holder 9 is slidable in a housing secured in a lathe capstan 8, is held in the retracted position by a tension spring 17, and carries a peg 18 which co-operates with a cam 12 mounted on a pivot 10 in the capstan, which pivot carries a torsion spring which tends to hold cam 12 away from the peg. In operation, the capstan is indexed so as to bring the tool holder into the operating position. Cam 12 is lifted by the turret slide, and a latch 16 on the cam, slides up the curved face 20 of peg 18. Holder 9 is moved to the right, Fig. 1, until latch 16 slides over head 20, and is prevented from dropping, thus maintaining the tool 19 in the projected position. The capstan advances, and the tool commences to screw. The tool is pulled into the workpiece by the engagement between the workpiece and tool, cam 12 is released and moves downwardly, due to the action of the torsion spring, and when the operation is completed, the tool is retracted by spring 17.
Patent GB-861015-A (GB)
Title: Life-saving suit made of airtight and waterproof materials
IPC: A41D13/02
Filed: 1959-06-04
Abstract: 861,015. Life-saving suits. HAMMERSCHMIDT, T. June 4, 1959 [July 15, 1958], No. 19115/59. Class 141 A life-saving suit is provided on the leg portions with external lacing 2 or sliding clasp fasteners for reducing the width of these portions. The chest portion may have similar adjustable lacing 4.
Patent GB-279936-A (GB)
Title: Improvements in or relating to cable telegraphy
IPC: H04L5/14
Filed: 1926-08-03
Abstract: 279,936. Smith, W. S., and McLachlan, N. W. Aug. 3, 1926. Artificial lines.-A dummy cable for use, e.g. in laboratory experiments comprises a length 1 of actual or scale model cable connected through one or more valves 6 to a series of impedance meshes 11 - - 13, the whole arrangement being substantially reflectionless. Thus the cable 1 is connected to the filament 7 through an impedance 2 equal to the characteristic impedance of the cable so that no reflection occurs at this point provided that the reflection effect due to interelectrode capacity be neutralized. Neutralization may be effected by connecting a resistance in series with the grid 5 by employing a valve with a screened grid, or otherwise. The receiver 14 (or alternatively the plate 8) is in series with a condenser 15 for attenuating low frequency signal components, together with a shunt resistance 16 for shaping the signals and limiting the direct current from the battery 10, and with a further series impedance 16<1> if desired. The cable 1 and also, if desired, the inductances 12 may be magnetized by passing current through them and removing it gradually so as to reduce the inductances to a desired valve.They are subsequently demagnetized by an alternating field. which may, if necessary, be applied to the winding coils 12, through additional windings. In a modification the direct current through the coils 12 from the battery 10 may be eliminated or controlled by inserting a condenser, with or without shunt resistance, between the anode 8 and first resistance 11, the end of which is in that case earthed through a further resistance. The cross-sectional area and number of turns is designed for each coil according to its position in the line so that the magnetic material is worked under normal conditions throughout. The impedances may be so chosen that the meshes represent greater lengths of cable as they become more remote from the cable 1. In modifications several sections, each comprising a valve 6 and a chain of meshes 11 - - 13, may be arranged between the cable 1 and receiver 14; or a cable may be connected at each end of the series of meshes. Restoring or modifying imperfect signals.- The signals reaching the receiver 14 may be shaped by means of the resistance 16 shunting the condenser 15, Fig. 1, or by means of the mesh shown in Fig. 3, which comprises inductance 17, resistances 18, and a condenser 19.
Patent GB-516582-A (GB)
Title: Improvements in the propelling machinery of motor boats
IPC: B63H23/00
Filed: 1938-06-29
Abstract: 516,582. Driving arrangements for propellers. THORNYCROFT & CO., Ltd., J. I., and THORNYCROFT, Sir J. E. June 29, 1938, No. 19270. [Class 114] Two engines a, b, and an intermediate 'pinion shaft c in line therewith connectable thereto by clutches d which have circular plates formed with V-grooves pressed together for driving engagement by oil under pressure. Flexible couplings may be interposed to compensate for misalignment. The shaft c has pinions g g' gearing respectively with ahead and astern pinions h, h<2> on the driving shaft i and connectable thereto by clutches similar to clutch d.
Patent GB-250081-A (GB)
Title: Improvements in or relating to lamps for burning petrol, benzol or other hydrocarbonliquids
IPC: F21V37/00
Filed: 1925-07-30
Abstract: 250,081. Landi, T. July 30,1925. Fuel reservoirs.-In order to prevent explosions in the reservoirs of lamps burning petrol, benzol or other liquid hydrocarbons the vapour generated in the reservoir is conducted to the atmosphere by means of a vent tube 10 which is bent into a coil or spiral 11 below the normal fuel level and is formed with a preferably contracted inlet or orifice arranged well above the highest fuel level. The discharge opening 3 of the tube 10 is preferably arranged in the bottom of the reservoir so as to be remote from the flame. Some of the escaping vapour condenses in the coil 11 and acts as a seal or valve but does not prevent the passage of vapour when an excessive pressure in the reservoir is reached.
Patent GB-183140-A (GB)
IPC: F02M35/04
Filed: 1922-07-15
Abstract: 183,140. Maybach-Motorenbau Ges. July 15, 1921, [Convention date]. Void [Published under Sect. 91 of the Act]. Dust &c., separating from air. - The air-inlet pipe b to the carburettor a of an automobile engine is provided with a valve c so that air may be drawn from the space within the bonnet through an aperture d in the wall of the pipe, or from the atmosphere through a chamber e below the radiator f. The chamber e has its inlet covered with gauze g and contains one or more removable partitions h, Fig. 3, along which the air must flow and which may be coated with dust-binding means.
Patent GB-1100874-A (GB)
Title: Improvements in or relating to supercharged internalcombustion engine power units
IPC: F02B33/00
Filed: 1965-05-07
Abstract: 1,100,874. Hydraulic transmissions. ETABLISSEMENTS RICHARD FRERES. 7 May, 1965 [4 June, 1964; 15 Dec., 1964], No. 19484/65. Heading F2C. [Also in Division F1] In an engine with an hydraulic transmission comprising a pump 11, Fig. 2, driving a motor 15, the compressor 7 is driven by a second hydraulic motor 12 connected by a pipe 18 to the hydraulic circuit 16, 17 of the main hydraulic transmission 11, 15. The pump 11 draws fluid through a pipe 21 from a supply tank 22 to which the exhaust fluid from motors 15, 12, is delivered through pipes 19, 20. In a modification, Fig. 5, the engine drives separate main drive-shafts 29a, 29b, e.g. in an endless track vehicle through independent hydraulic transmissions 11a, 15a and 11b, 15b, and the compressor is driven by a pair of hydraulic motors 12a, 12b, each connected to its associated main transmission circuit. The output of the pumps 11a, 11b, may be varied to vary the speeds of the separate tracks. In a further modification the engine drives a further hydraulic pump which supplies a hydraulic control and a further motor driving the compressor is actuated from the control circuit.
Patent GB-379808-A (GB)
Title: Improvements relating to garden and like rakes
IPC: A01D7/02
Filed: 1931-07-07
Abstract: 379,808. Rakes ; haymaking &c. LEVY, I., Grove Lodge, Grove Road, Surbiton, Surrey. July 7, 1931, No. 19540. [Classes 6 (ii) and 6 (iii).] The prongs of garden and other rakes for removing leaves &c. from lawns, shaking up hay, &c. are made of indiarubber. The prongs a are formed on a base strip b adapted to slide into a slit or two-part holder c to which a handle d is connected by a socket e and brackets f. The flexible prongs may be reinforced with wire and may have webs g between them. In a rotary rake, such as a horse or motor-drawn rake, base strips carrying indiarubber prongs are slid into holders on a drum.