baber/WOPTO huggingface dataset:
Patent GB-101573-A (GB)
Title: Sighting and Range Finding Devices for Firearms.
Inventor: GRIFFIN FREDERICK
IPC: F41G1/473
Filed: 1916-02-04
Abstract: 101,573. Griffin, F., and Gaynor, T. F. Feb. 4, 1916. Sights.-Consists of a range-finding foresight comprising an opaque or transparent diaphragm provided with a symmetrical aperture or figure of definite dimensions. The aperture or figure is surrounded by a dark border, and is provided with means for indicating the centre. In the construction shown in Figs. 6 and 8, the range-finding sight consists of a plate A pierced with an aperture B and radial slots B<1>, B<2>, B<3>, B<4>. The aperture may be square instead of round, and the diaphragm may be fitted within a tube and may be adjustable. In a modification, Fig. 26, the aperture is enlarged at the top into an additional range-finding aperture B<8>. Instead of being an opaque plate, the diaphragm may be a transparent plate or a lens, and the aperture may be replaced by a figure marked on the glass, as shown in Figs. 33 and 35. The marks on the glass may consist of grooves in the glass, and the centre of the lens may be marked bv a small hole. Means for illuminating the device for use at night may be provided, comprising a detachable ring I, Figs. 31 and 32, coated with radiferous material I<4>. A suitable aperture or lens backsight is used with the foresight.
Patent GB-1367263-A (GB)
Title: Fuel injection pumps for multi-cylinder internal combustion engines
IPC: F02M41/06
Filed: 1973-01-12
Abstract: 1367263 Fuel injection pumps BARKASWERKE VEB 12 Jan 1973 1721/73 Heading F1A In a fuel injection pump comprising a housing 1, 17 in which are mounted a rotary distributor 3, a priming pump 25, and a cam 5 driven together by a shaft 2, opposed pumping pistons 12 are reciprocable by the cam 5 in a transverse bore 13 in a carrier body 11 exchangeably mounted in the housing. A non-return valve 27 is also mounted in the carrier body 11 and acts to allow fuel from the priming pump 25 to enter the pumping chamber 14 between the pistons 12 via passages 26, 29. During the inward pumping strokes of the pistons caused by rocking levers 8 having rollers 10 contacting opposite sides of the cam 5, one of a plurality of transverse bores 18 registers with a pressure bore 15 from the chamber 14. Thus fuel flows into an axial bore 19, past a non-return valve 20, and through a transverse bore 21 into whichever outlet port 22 is in register therewith. A seal 31 is provided between the housing and the carrier 11.
Patent GB-885439-A (GB)
Title: Improvements in steroids and the synthesis thereof
IPC: C07J75/00
Filed: 1960-01-18
Abstract: The invention comprises cyclopentanophenanthrene compounds of the general formula <FORM:0885439/IV (b)/1> wherein R represents the acyl radical of a hydrocarbon carboxylic acid of less than 13 carbon atoms and R1 represents hydrogen or the acyl radical of a hydrocarbon carboxylic acid containing less than 13 carbon atoms, and the preparation thereof by reacting 16a ,17a -dihydroxyprogesterone with an acid anhydride or an acid halide of the required carboxylic acid to form the required 16a ,17a -diester of the above general formula, and when required, treating the diester with a dilute basic reagent such as a dilute solution of an alkali metal hydroxide or carbonate in a lower alcohol, to form the 17-monoester of the above general formula. The 17-monoester may be subsequently acylated at the 16-position to form a 16,17-diester having different ester groups. The ester groups may be derived from alkanoic, aromatic, aralkanoic, cycloalkane carboxylic, alkenoic and cycloalkene carboxylic acids. In the examples the 16, 17 - dicaproate, 17 - monocaproate, 16 - acetate 17-caproate, 16,17-diacetate, 17-monoacetate and 16-benzoate 17-acetate of 16a ,17a -dihydroxyprogesterone are prepared.
Patent GB-1027945-A (GB)
Title: Improvements in fuel injection systems for mixture compression internal combustion engines
IPC: F02D23/00
Filed: 1965-01-15
Abstract: 1,027,945. Starting. ROBERT BOSCH G.m.b.H. Jan. 15, 1965 [Jan. 16, 1964], No. 1807/65. Heading F1K. Fuel for starting a fuel injection engine is injected into the intake manifold 12 under the control of an electromagnetically operated valve 11 controlled by a time switch 32, and switch 33 responsive to engine temperature. Switches 32, 33, are arranged in parallel in the circuit of a solenoid 28 controlling a switch 20 in the circuit of electromagnet 14. Pressing of the starter switch 24 to close the starter motor and ignition circuits 27, 18, also closes the circuit of coil 28 through the switches 32, 33, to close switch 20 and energize valve 11 to initiate the supply of starting fuel. Switch 32 opens after a short interval, e.g. 0À5 to 1À0 secs., but switch 20 remains closed until the engine temperature reaches a predetermined value, e.g. 40‹C., when switch 33 opens to break switch 20 and close the valve 11. If at starting the engine temperature is above the cut-off temperature of switch 33, valve 11 only remains open for the interval switch 32 remains closed.
Patent GB-505690-A (GB)
Title: Improvements relating to gas heated hot plates for use in cooking operations
IPC: F24C3/04
Filed: 1938-01-20
Abstract: 505,690. Hot-plate stoves; flame-spreaders. RADIATION, Ltd., YATES, H. J., HARTLEY, H., and BROWN, A. Jan. 20, 1938, No. 1886. [Classes 75 (i) and 126] A gas-heated hot-plate for use in cooking comprises an annular or equivalent (e.g. rectangular) burner b with gas nozzles c on its inner periphery, a refractory block g within the burner and with its upper surface beneath the burner flames, a cast-iron or other heatresisting fret i, grid, or the like above the flames, and means such as the plate to support cooking vessels above the grid, fret, or the like. The block g has grooves h in its conical upper surface opposite the burner nozzles, the grooves tapering towards the apex of the block. The latter is recessed in the bottom to fit a positioning-piece r. The fret i may be in segments, and has apertures j1 and an irregular upper surface 80 as to simulate incandescent solid fuel when heated. Around the fret i is a fireclay or other refractory block m, which may be studded, grooved, or ribbed on its upper surface. Specification 370,589 is referred to.
Patent GB-1294171-A (GB)
Title: Process for converting a nitrile to the corresponding amide
Inventor: TEFERTILLER BEN A
IPC: C07C67/00
Filed: 1970-01-14
Abstract: 1294171 Oxide catalyst DOW CHEMICAL CO 14 Jan 1970 [16 Jan 1969 23 June 1969] 1894/70 Heading B1E [Also in Division C2] A catalyst comprising reduced copper oxide, reduced copper - chromium oxide, reduced copper-molybdenum oxide, or a mixture thereof is prepared by reducing the appropriate oxides with elemental hydrogen, suitably at a temperature of from 50 to 500C. Examples describe the preparation of a reduced copper oxide-chromium oxide catalyst in which the starting oxides are obtained by reacting ammonium chromate with copper chloride. The catalysts are used for converting a nitrile to the corresponding amide. The Examples all relate to Cu plus Cr. In Example 5, barium is also present.
Patent GB-109572-A (GB)
Title: A Method of Converting Highly Viscous Mineral Oils, or Highly Viscous Residues from the Distillation of Mineral Oils, into Hydrocarbons of less Viscosity.
Inventor: ROSENBERG IGNAZ
IPC: C10G9/00
Filed: 1917-02-08
Abstract: 109,572. Rosenberg, I. Feb. 8, 1917. Mineral oils.-Viscous mineral oils and oil residues are converted into oils of lower vicosity by heating them to about 400‹ C. under a pressure of 4-6 atmospheres for so short a time, say half an hour, as to minimize the splitting up of the oils. The product is treated at 150‹ C. with a current of steam until the..flash point of 160‹ C. is reached, and is suitable for use as a fuel oil.
Patent GB-892878-A (GB)
Title: Worm gear
Inventor: FRANKE FRANZ
IPC: F16H55/22
Filed: 1959-01-19
Abstract: 892,878. Toothed gearing. PFAUTER, M., PFAUTER, W., PFAUTER, G., and PFAUTER, H. Jan. 19, 1959, No. 1933/59. Class 80(1).  In worm gearing wherein the two flanks I, II of the toothing of a worm have different leads H I , H II , the thickness of the toothing varies along the length of the worm, so that backlash may be taken up by axial movement of the worm, the two flanks of each tooth on the worm and/or the worm-wheel have a different size and shape. As shown, the two flanks extend to different outside diameters. Each flank can then be designed separately in accordance with its respective pitch point C I , C II , to give as long as possible time of engagement, i.e. each flank can be lengthened to a point where undercut is produced. If desired, the pressure angles for the two flanks may differ, each being reduced to increase the time of engagement.
Patent GB-357912-A (GB)
Title: Improvements in rotary well drilling equipment
IPC: H01F41/16
Filed: 1931-01-21
Abstract: 357,912. Well-drilling plant. NATIONAL SUPPLY CORPORATION, 120, Broadway, New York, U.S.A. Jan. 21, 1931, No. 2020. Convention date, Oct. 20, 1930. [Class 85.] In a rotary welldrilling plant, the split bushings 4, 5 are held in the rotary table 1 by centrally - bowed locking bars 6 with hooked ends engaging L-slots 12 formed partly in the table and partly in the bushing 4. Specification 214,605, [Class 85, Mining &c.], is referred to.
Patent GB-1330456-A (GB)
Title: Railway crossover frogs
IPC: E01B7/14
Filed: 1971-01-15
Abstract: 1330456 Railway crossings BUTZBAOHER WEICHENBAU GmbH 15 Jan 1971 [17 Jan 1970] 2190/71 Addition to 1231845 Heading E1G In the railway crossing frog of the parent specification wherein a resilient point 23 formed by welded-together convergent rails is shifted between wing rails 21, 22 by a slide rod, Fig. 1 (not shown) associated with lost motion locking arms (34, 35), the pivotal connection between the locking arms and the point is modified in that the locking arms are pivoted to a laterally-movable point-shifting element 24 in which the point 23 can slide longitudinally to accommodate temperature changes. As shown each locking arm is resiliently and adjustably coupled to the element 24 through an intermediate element 36 provided with a rubber-bushed pin 38 and an eccentric-bushed pin 39.
Patent GB-429297-A (GB)
Title: Means for operating gas-filled luminescent tubes
IPC: H01F38/10
Filed: 1934-01-22
Abstract: 429,297. Supply systems for vacuum &c. lamps; transformers. BOUCHER, C. P., 1484, Crescent Street, Montreal, Canada. Jan. 22, 1934, No. 2215. [Classes 38 (ii) and 38 (iv)] Luminescent electric discharge tubes are connected in parallel to each other to the secondary windings of a high leakage transformer in order to prevent excessive current flow through any one tube. Tubes 10, 11, 12, 13 are connected each to two secondary winding sections of a set of four sections 21, 22, 23, 24 of the transformer 17. The primary windings 15, 16 of the transformer are supplied from a source 14 through a resistance 20. Capacitative elements 32, 33, 34, 35, are connected between the respective secondary windings 21, 22, 23, 24 and the common conductor 30 which is grounded at 31. The secondary windings are so arranged that the mid-point of the two secondaries supplying each tube is grounded through the capacitance elements, it being required only to insulate for half the maximum applied potential. The high leakage transformer 17, Fig. 2, has its windings mounted on the single central leg of the core 25. Magnetic shunt core sections 25d, 25<e>, 25<b>, 25<g> are interposed between the central leg 25<b> and the outer legs 25<a>, 25<c> leaving a short air gap at each end. As the currents in the transformer secondary windings tend to increase due to ionization of the tubes, the magneto motive forces due to these currents increase and the magnetic flux along the central leg 25b is constrained to pass along the magnetic shunts 25d, 25<e>, 25<f>, 25<g> thus detracting from the amount of magnetic flux flowing through the mid portion of the central core leg 25b. There is then a reduction in the total flux linking the primary and secondary windings and a consequent reduction in the potential applied to the tubes, limiting excessive flow of current in the tubes. Reduction of the instantaneous value of the potential is also achieved by the action of the impedance element 20 in the primary circuit. An increase in the amount of primary current raises the potential across the impedance 20 and lowers the potential across the primary and secondary windings. Similarly the capacitance elements in series with the tubes reduce the potential applied to the tubes upon rise of current therethrough. Modifications in the arrangements of the windings on the transformer core are described. The application to a transformer having an uneven number of windings is also described.
Patent GB-620803-A (GB)
Title: Improvements in or relating to mordanting dyestuffs
IPC: D06P1/41
Filed: 1947-01-24
Abstract: A naphthol sulphonamide of the general formula <FORM:0620803/IV (c)/1> wherein A is the divalent radicle of an organic diamine of at least eight carbon atoms which contains at least one benzene nucleus and X is hydrogen, a lower aliphatic acyl group of 2 to 5 carbon atoms or a carbalkoxy group of 1 to 5 carbon atoms, and wherein positions para to the OX group may be substituted by chlorine or bromine atoms or sulphonic or carboxylic acid groups is used as a mordant for basic dyes for material such as filaments, fibres, films and foils of wool, silk, nylon, casein and gelatin.  Particular members of this type of naphthol sulphonamides and their methods of preparation are described in Specification 577,387.  4,41 - Bis - (carbethoxynaph - 2 - sulphonamido - phenyl) ether is exemplified and a number of suitable basic dyes are specified.
Patent GB-1344394-A (GB)
Title: Apparatus for manufacturing filaments from molten synthetic material
IPC: D01D1/06
Filed: 1972-01-18
Abstract: 1344394 Melt-spinning apparatus REIFENHAUSER KG 18 Jan 1972 [19 March 1971] 2256/72 Heading B5B Apparatus for manufacturing filaments spun from molten synthetic material comprises a molten material distributing device 1 having a spinning head 5 with a conical annular channel 6, with an attached front element 7 connected to the annular channel and containing a number of distribution ducts 8 arranged in a circle over the periphery of the annular channel, individual spinneret assemblies 2 each being surrounded by an individual cooling air blowing device 3, and a conventional take-up system for the filaments. The melt is supplied from central feed duct 10 to the annular channel 6 which as shown is preferably of conical form, and passes via distribution ducts 8, which may be equidistant from each other, to the spinneret assemblies 2. Spinning pumps 11 may be fitted between ducts 8 and spinneret assemblies 2. Each individual spinneret assembly may be surrounded by a cooling air blowing device 3, so constructed that cooling air issues from the gap 12 coaxially with respect to the extruded filaments 13. The filaments then pass to winding means (Fig. 1, not shown). The construction of the apparatus is such that each volumetric part of the melt being spun flows through a path of equal length, and the cooling air always flows in the spinning direction, enabling high spinning speeds to be obtained.
Patent GB-1402043-A (GB)
Title: Light-sensitive material suitable for producing a letterpress printing makeready
IPC: B41M9/00
Filed: 1973-01-16
Abstract: 1402043 Light- and heat-sensitive materials for producing letterpress makereadies MINNESOTA MINING & MFG CO 16 Jan 1973 [17 Jan 1972 28 Sept 1972] 2318/73 Heading G2C A light- and heat-sensitive material useful for producing letterpress makereadies comprises (a) a flexible support, (b) a heat-sensitive layer at least 50 microns thick containing a thermoplastic and/ or a curable thermosetting resin and a heatsensitive puffing agent which on heating the layer increases its thickness by at least 50 microns; this layer preferably being capable, on expansion, of supporting at least 42 kg/square centimetres for at least 15 seconds, and (c) a light-sensitive layer which changes its solubility on exposure and either in this layer or coated on this layer, a waterinsoluble polymer and a radiation absorptive pigment. Specified light-sensitive layers are photopolymerizable compositions admixed with carbon black and vinyl polymers, polymethylmethacrylate, polyesters, polyamides, phenol- or urea-aldehyde resins or cellulose acetate butyrate; naphthoquinone diazide esters or diazo sulphones admixed with novolaks and carbon black; or diazo resins overcoated with a polyvinyl formal and carbon black. The specified heat-sensitive layer comprises, a vinyl chloride/vinyl acetate copolymer, a vinyl terpolymer, an epoxy resin, a curing agent for the epoxy resin and azodicarbonamide as puffing agent. The material is imagewise exposed and developed to remove the more soluble areas (and the over-lying overcoat where present). The material is then uniformly exposed to radiant heat which is absorbed by the carbon black and causes the heatsensitive layer to expand according to the amount of carbon black above the layer (i.e. solid tone areas expand more than half tone) to produce a makeready for letterpress which is used as disclosed in Specification 865164.
Patent GB-100426-A (GB)
Title: An Improved Belt for Aviators and the like.
Inventor: ROE ALLIOTT VERDON
IPC: B64D25/06
Filed: 1916-02-17
Abstract: 100,426. Roe, A. V. Feb. 17, 1916. Straps and bands.-A chest pad or support a for wear by an aviator is connected to stay ropes j by means of nuts i on the screwed shanks of links h, each link receiving a bent-over extension d of the support. The extensions are secured by detachable pins g on cords f. The support, Which may be either in one piece or constructed with side wings c articulated at b to the main section, is sustained round the shoulders of a strap m. Push-fasteners n on the strap permit of adjusting the height of the support on the wearer.
Patent GB-791358-A (GB)
Title: An improved overdrive mechanism incorporated in a gear box
Inventor: GLEED BERNARD STANLEY
IPC: B60K17/08
Filed: 1956-01-25
Abstract: 791,358. Change speed gearing. MOSS GEAR CO., Ltd. Sept. 17, 1956 [Jan. 25, 1956], No. 2419/56. Class 80 (2). The input shaft a of a motor-vehicle gear-box carries a rotatable sun wheel g connected to the shaft through a one-way roller clutch g2 and controllable by a band-brake g4, the input shaft carries planet wheels d meshing with the sun g and an annulus e an extension of which drives the primary gear e2 of a synchromesh gear thus forming an overdrive gear contained within the gear-box c. The band-brake g<SP>4</SP> may be applied under manual control by an hydraulic cylinder fed from an air pump driven from the gear-box layshaft.
Patent GB-1273846-A (GB)
Title: Multipole electric switches
Inventor: CLARK CHARLES WILLIAM
IPC: H01H23/16
Filed: 1970-01-19
Abstract: 1,273,846. Inert switches; cam-operated switches; retractive switches. C. W. CLARK. 19 April, 1971 [19 Jan., 1970], No. 2424/70. Heading H1N. A multipole electric switch comprises a housing, fixed contacts 32, an operating lever 9, rockers 36 carrying movable contacts 38 and shaped to form camways, and cam followers 40 mounted on a carrier 50 slidably connected to lever 9 and spring biased to urge cam followers 40 against the camways In the embodiment described, there are four poles (Fig. 2, not shown) with two fixed contacts 32 and one central terminal per pole. Carrier 50 is in the form of a bar with a central aperture through which passes lever 9, cam followers 40 in the form of dumb-bell shaped rollers being mounted on the bar by pins 62 engaging the centre portion 41 of the dumb-bell shape and additionally spring loaded against the camways by a blade spring on the outside of the bar bearing on pins 62 or on the inside of the bar between the bar and a shoulder on pins 62. Rockers 36 are connected to the central terminal by pivoting on the sides of a U-shaped member 34 connected to the central terminal. The camway shown is stable in three positions but different camway profiles may be provided, Fig. 3 (not shown), allowing for stability in only two positions and allowing for latching in one or three positions. The switch is sealed by a rubber seal 10 (Fig. 2) and a cap 11 (Fig. 2) in the rack 8 and by a seal 22 in the base of the switch.
Patent GB-1150187-A (GB)
Title: Electrical Connector Unit.
Inventor: ALLISON KENNETH CLARK
IPC: H01R4/24
Filed: 1968-01-16
Abstract: 1,150,187. Sleeve connector. K. C. ALLISON. 16 Jan., 1968, No. 2429/68. Heading H2E. An electrical connector for joining unbared ends of a pair of wires, comprises an inner conductive sleeve 12 with inwardly pointed teeth 17 arranged along opposite sides of the sleeve. The teeth may be disposed in groups of three, with one tooth 17 larger than the other two 17a, and angled to point away from the entrance to the sleeve to allow the wires to be inserted without fouling on the teeth. The sleeve is tapered down from the cable entrance, and the two leads are pushed in side by side until their insulation 11 frictionally engages on the teeth at the narrow end of the sleeve. An outer conductive sleeve 13, sealed at one end 14, fits telescopically over the inner sleeve, being secured thereto by projection 15 on the inner sleeve co-operating with recess 16 in the outer sleeve. An outer layer of insulation 18 (e.g. nylon), fits over the outer sleeve 13. When assembled the connector is crimped and the teeth 17 bite through the insulation 11 on the wires making conductive contacts to the cores 10. The crimping may take the form of a simple compression or else includes making creases along the length of the connector.
Patent GB-326617-A (GB)
Title: Improvements in thermionic tubes
IPC: H01J1/20
Filed: 1929-01-25
Abstract: 326,617. Wedel, C. J. R. H. von. Jan. 25, 1929. Vacuum tubes.-A tubular cathode C, closed at one end, contains a heater in the form of a doublv-wound conductor H mounted on an insulator B, which is supported by an axial conducting rod 0, the cathode, the rod, and optionally the heater being connected at or near the centre of the closed end of the cathode, and preferably with the neutral point of an A.C. supply. The cathode may be of platinum, molybdenum, nickel, or cobalt or alloys of these with each other or with aluminium, and is coated with electron emitting oxides oramphoteric compounds. The insulator consists. of a mixture of oxides of beryllium, thorium and .aluminium with sintering materials such as barium and calcium fluoride. The heater may .be a helical wire coated with insulating material, tor example amphoteric compounds such as beryllium oxide, and aluminium mixed with sintering materials such as strontium fluoride. A nickel or tungsten wire may be plated with metal before the insulating compound is applied. In order to compensate for the loss of heat from the end of the cathode near the stem E, additional heating may be provided at that end as by (a) varying the spacing of the turns of the helix (b) varying the slope of the grooves on the insulator or (c) providing an electron emitting compound such as strontium nickelate on the wire so as to produce a discharge between the parts of the heater. In a modification in which the valve contains gas, ionic discharge between the parts of the heater are prevented by filling the space between the insulator and the cathode with a powder of the insulating materials previously mentioned; the cathode is mounted on a flanged support. Two stems S may be provided, the grid and anode leads being taken through one stem and the heater wire through the other.