baber/WOPTO huggingface dataset:
Patent GB-251727-A (GB)
Title: Improvements in or relating to automatic telegraph transmitters
IPC: H04L13/06
Filed: 1926-03-09
Abstract: 251,727. Aston, C. J. March 9, 1925. Automatic transmitters; perforated-strip transmitters.-High-speed telegraphic signals are produced and automatically transmitted by passing between the plates of a condenser a strip having its dielectric properties varied in accordance with the signals. The specific dielectric capacity or the thickness of the strip may be varied for this purpose. The strip may be. of paper, e.g. oiled or waxed paper, or of celluloid, and variations of specific inductive capacity may be produced by punching in it holes, slots, or notches, or by local chemical treatment or application of wax or other dielectric material. Figs. 1 and 2 show a preferred construction in which the strip 1, moved by rollers 6, 7, is guided between condenser electrodes 2, 3 mounted in ebonite blocks 4, 5, the dimensions of the electrodes along the strip being preferably small in relation to their dimensions across the strip. Fig. 3 illustrates methods of punching the strip in accordance with Morse signals to be transmitted. Dots and dashes may be represented by slots 14, 15 of uniform width but of different lengths in the direction of travel of the strip, but preferably, to avoid undue weakening of the strip, dots are represented by transverse series of holes 16, and dashes by transverse series of longer holes 17. The terminals 8, 9 of the electrodes 2, 3 are connected to corresponding plates of a condenser 12 in a tuned circuit 12, 13 of an oscillation generator. The movement of the strip thus varies the frequency of this circuit, and this variation is utilized for transmission of the signals, e.g. by (1) applying the oscillations direct to a power amplifier for use as marking and spacing waves in continuous wave transmission, (2) combining the oscillations with local oscillations of constant frequency to produce oscillations of lower frequency and transmitting these either as long or medium length continuous waves or as modulations of short waves, or (3) selecting a band of frequencies as in (2) and applying these to a trigger valve circuit to produce oscillation or quenching in accordance with the signals, and thereby to control a more powerful source of energy.
Patent GB-741432-A (GB)
Title: Improvements relating to hinged elements, such as doors, having a linkage for the operation thereof
IPC: E05D15/34
Filed: 1953-03-07
Abstract: 741,432. Door-operating appliances, hinges. CAILLET, R. March 7, 1953, No. 6374/53. Classes 65 (1) and 65 (2). A hinged element, such as a door 3, is supported by a linkage comprising at least one main link 7 pivoted respectively on a fixed vertical axis 5 in the vicinity of a vertical edge of the door when the latter is closed and to the door on a parallel axis 8 at approximately the middle of the door, and at least another link 10 pivoted respectively on a fixed vertical axis 11 and to the door on a parallel axis 12, the arrangement being such that both links are of approximately the same length, that in said closed position the links extend in the same direction from their fixed axes to their movable axes, and that the links are capable of moving into an opening position in the same angular direction when the linkage is capable of forming a deformable quadrilateral which permits of the door moving into an opening portion with a minimum of projection relative to a fixed wall during its operation. Axis 5 is constituted by a shaft journalled in brackets 6 secured to the edge of the door opening in the wall 1 of a ship. A pair of links 7 is fired to the shaft. Link 10 is pivoted to the wall 1 above the door opening. Shaft 5 is rotated to operate the door either by means of a worm wheel fixed to the shaft and meshing with a worm driven by a chain and sprocket, or by means of a spur wheel fixed to the shaft and meshing with a rack displaceable by a double-acting hydraulic jack.
Patent GB-139793-A (GB)
Title: Improvements in ball bearings
IPC: F16C43/06
Filed: 1920-03-03
Abstract: 139,793. Marreck, A. Oct. 13, 1913, [Convention date]. Ball bearings. - To prevent injurious contact between the balls of a bearing and the shoulders of a filling- opening g, h, in one or both race rings, the race groove in the locality of the opening has a radius of curvature k greater than in the remainder of the groove resulting in a wider and flatter groove d of uniform depth.
Patent GB-491722-A (GB)
Title: Improvements in the manufacture of sintered hard articles containing metallic carbides
IPC: C22C1/05
Filed: 1937-03-05
Abstract: Sintered hard articles which contain metallic carbides are prepared by mixing a number of different high melting metals and/or inorganic compounds of different high melting metals with carbonaceous reagents (e.g. coal) in sufficient quantity to form the carbides, subjecting them in common to carbonization which simultaneously in a sintering operation converts them into the sintered hard material, and, before or during this treatment, which may occur in stages with disintegration of the intermediate product and renewed admixture, giving the mixture the form of the desired hard article which is thereby obtained directly in the solid condition as a useful workpiece.  According to an example, tungsten or chromium is admixed with titanic and vanadic oxides and sufficient coal for carburization, the mixture being made by first mixing the proper proportion of coal with the individual metal or oxide and finally mixing the three mixtures together. The final mixture is heated to somewhat above 1500 DEG  C.  The mixture is moulded into the form of a plate with the employment of a not excessive pressure before carburization.  The Specification as open to inspection under Sect. 91 comprises also the production of borides and silicides, and is not confined to sintering processes or to the production of the shaped articles before the completion of conversion.  This subject-matter does not appear in the Specification as accepted.ALSO:Sintered hard articles which contain metallic carbides are prepared by mixing a number of different high-melting metals or their inorganic compounds or both with carbonaceous reagents (e.g. coal) in sufficient quantity to form the carbides, subjecting them in common to carburization which simultaneously in a sintering operation converts them into the sintered hard material, and, before or during this treatment, which may occur in stages with disintegration of the intermediate product and renewed admixture, giving the mixture the form of the desired hard article, which is thereby obtained directly in the solid condition as a useful work piece.  According to an example, tungsten or chromium is admixed with titanic and vanadic acid and sufficient coal for carburization, the mixture being made by first mixing the proper proportion of coal with the individual metal or oxide and finally mixing the three mixtures together.  The final mixture is heated to somewhat above 1500 DEG  C.  The mixture is moulded into the form of a plate with the employment of a not excessive pressure before carburization.  The Specification as open to inspection under Sect. 91 comprises also the production of borides and silicides, and is not confined to sintering processes or to the production of the shaped articles before the completion of conversion.  This subject-matter does not appear in the Specification as accepted.
Patent GB-1386363-A (GB)
Title: Two-stroke internal combustion engine
IPC: F02D9/00
Filed: 1972-02-11
Abstract: 1386363 Two stroke I C engines S ONISHI 11 Feb 1972 [25 Feb 1971] 6615/72 Heading FIB A two stroke electrical ignition type I. C. engine comprises an exhaust, port 4 and a scavenging port 3 opened and closed by the motion of a piston 2 in a cylinder 1, a combustion recess 15 in cylinder head 14 being located in the central region thereof and shaped to gradually deepen in the intended direction of gas flow, the open end of the recess not being narrower than any portion of it within the cylinder head and the engine also comprising valves 8, 6 to control the rate of fuel supply and exhaust gas flow, the valves being connected to open or close in conjunction with one another. The combustion chamber is shaped so that as the piston approaches t.d.c. the mixture is squished into the recess 15. The size of pre-chamber 20 upstream of valve 6 is chosen to assist efficient combustion and smooth running. The coupling of valves 7 and 8 also allows operation with a lower compression ratio than otherwise. Instead of supplying fuel via a carburetter 26, the fuel may be injected into the intake pipe, the crank-case or into the cylinder.
Patent GB-1261568-A (GB)
Title: Improvements in or relating to cold pressure welding apparatus
Inventor: ROZMUS WALTER J
IPC: B23K20/02
Filed: 1969-10-08
Abstract: 1,261,568. Welding by pressure. KELSEYHAYES CO. 8 Oct., 1969 [11 Oct., 1968; 19 June, 1969], No. 6624/71. Divided out of 1,261,566. Heading B3R. The subject-matter of this Specification is identical with that of Specification 1,261,566 but the claims omit any reference to the wire-shearing feature of the dies.
Patent GB-581385-A (GB)
Title: Improvements relating to electric current impulse circuit arrangements, suitable for the operation of electromagnetic apparatus
IPC: H01H51/08
Filed: 1944-04-11
Abstract: 581,385. Electric clocks. GENT & CO., Ltd., and CHAPMAN, E. O. April 11, 1944, No. 6665. [Class 139] An electrical circuit arrangement applicable to the step by step operation of individual electromagnetically operated devices by means of alternate electrical impulses of opposite polarity in which impulse transmitting contacts are provided operated periodically to reverse the connection of an electric source to the circuit and one or more of the said electro-magnetically operated devices are to be operated only by the impulses of one polarity means being furnished for preventing the intervening impulses from passing through the said one or more devices and for allowing such impulses to by-pass those devices. Half-minute impulses from a standard transmitter energize a magnet 22, Fig. 1, which attracts its armature 23 against the pull of a spring 24. The return movement of the armature 23 is transmitted by means of pawl 25 and wheel 26 to wheel 28 the teeth of which co-operate with the moving springs 29, 30 of two sets of contacts 31, 32 and 33, 34 to cause the reversal of the connections of a battery 35 to the standard transmitter and to the impulse clocks 38 and workmans recorders 39 every half-minute. The impulse clocks 38 are operated by every halfminute impulse but the workmans recorders 39 each have a contact rectifier 40 connected in series and a contact rectifier 41 and resistance 42 connected in shunt so that they are only operated by every alternate impulse (i.e., impulses of one polarity) the other impulses being by-passed along the shunt circuit. In a modification, Fig. 2, the reversing springs 29, 30 and the contacts 31, 32 and 33, 34 are operated by an alternate action relay 57 which receives half-minute impulses of opposite polarity, the reversing contacts being much nearer the electromagnetic devices in this case. In a further modification, Fig. 3, not shown, one or more branch circuits each controlled by relays and having similar clocks and recorders are provided. In a further modification, Fig. 4, not shown, the arrangement is similar to that shown in Fig. 2 but a branch circuit in which a second alternate action relay operating a second set of contacts which reverse the connections of a local battery is provided. In still a further modification, Fig. 5, not shown, a large installation in which a sub-circuit controlled by a relay in the main circuit and provided with a pilot dial which operates to reverse the connections of a local battery in the same manner as before (Fig. 1) is provided. This pilot dial operates similar impulse clocks and workmans recorders as before.
Patent GB-852527-A (GB)
Title: Steam boiler firing installation permitting simultaneous combustion of fuels differing in inflammability
IPC: F22B37/14
Filed: 1959-02-26
Abstract: 852,527. Solid fuel furnaces. SCHMIDT'- SCHE HEISSDAMPF-G.m.b.H. Feb. 26, 1959 [March 28, 1958], No. 6675/59. Class 51 (1). [Also in Group XIII] Fuel which is not readily inflammable is burnt in an inclined trough grate formed of water tubes connected into the circulation of a steam generator, and more inflammable fuel is burnt on a travelling grate fed separately and passing below the open lower end of the trough grate. Low-grade fuel, such as refuse, is fed to a trough grate 1 formed of water tubes from a hopper 10 in amounts regulated by flap 11, and higher grade fuel from hopper 12 passes to a travelling grate 3 by a shoot 13 extending below the trough grate 1. The partly burnt fuel from grate 1 falls on to the burning fuel on the travelling grate 3, which is inclined upwardly to its discharge end. The slope of the grate 3 is varied by a screw 25 which swings the grate 3 about a horizontal shaft 26 to regulate the depth of fuel on the grate. An air blast nozzle 24 draws the combustion products up the grate 1 below a baffle 20 to a secondary combustion chamber 17 above a trough-shaped baffle 14 supported on tubes 15 bent out from the furnace walls. Openings .in the baffle 14 allow dust to fall on to the grate 3 and an auxiliary oil burner 38 may be mounted above the baffle. The convection pass 31 is lined with water pipes 34 traversed by flue tubes 33.
Patent GB-507953-A (GB)
Title: Improvements in and relating to the manufacture and production of artificial threads, filaments and the like
IPC: D01D10/04
Filed: 1938-03-04
Abstract: 507,953. Treating artificial threads. COURTAULDS, Ltd., MCKEOWN, J. H., and MORTON, E. A. March 4, 1938, No. 6842. [Classes 2 (ii) and 15 (i)] A continuous tow of artificial threads, filaments, &c. is treated with washing, bleaching, and desulphurizing liquids by means of a grid on' to which 'the tow falls'and which comprises fixed longitudinal bars and intermeshing bars which have an up-and-down and longitudinal to-and-fro movement so that the tow forms a blanket of overlapping small coils. The tow 1 is led through a funnel 3 which is carried by a reciprocating frame 7, the tow falling on to the grid comprising the fixed bars 4 and reciprocating bars 5. The liquid is supplied by a spray 13 and is caught by a bath 14. Specifications 16,495/07, [Class 2], 7748/10, [Class 2 (ii)], 332,003, [Class 15 (i)], and 379,880 are referred to.
Patent GB-567242-A (GB)
Title: Coating compositions
IPC: C09D7/45
Filed: 1943-05-03
Abstract: A paint, enamel, or like composition having a pigment which forms a soft, readily redispersable sediment on standing, is obtained by preparing a solution of a cellulose derivative and mixing therewith a pigmented coating composition with which the cellulose derivative is incompatible, whereby the cellulose derivative is precipitated in the form of soft flocculent curds. The dispersed semi-solid curds act in the nature of an auxiliary pigment and bring about a desirable state of flocculation of the main pigment in the paint and result in increased body.  The amount of cellulose derivative curd is preferably in the range of 0.1 to 4 per cent of the enamel solids. Ethyl cellulose is dissolved in a solvent such as xylene or a mixture of xylene and a petroleum naphtha.  Butyl alcohol or other alcohol may be added. p  The ethyl cellulose solution is placed in a ball or pebble mill and the rest of the paint mill base is added, and the composition is ground until even dispersion of the pigments and precipitated ethyl cellulose has taken place.  The paint may be diluted by addition of solvents.  In an example, a varnish comprising a resin, calcium hydrate, linseed oil and mineral spirits is mixed with iron naphthenate, barytes, carbon black and mineral spirits, and with a solution of ethyl cellulose in petroleum naphtha.  The resin may be a natural or synthetic resin.  In another example, a solution of ethyl cellulose is mixed with a paint comprising a linseed oil-modified alkyd resin, calcined pyrophyllite, basic calcium silicate, titanium dioxide, lead naphthenate, manganese naphthenate and petroleum naphtha.  Other fillers or pigments which may be used are silica, whiting, lead chromate, zinc chromate, white lead, zinc oxide, litharge, red lead and calcium aluminate.  The ethyl cellulose may have an ethoxy content of 43.5 to 50 per cent.  Other cellulose derivatives which may be used are cellulose acetate, acetobutyrate and nitrate, and benzyl cellulose.
Patent GB-929289-A (GB)
Title: Improvements relating to electrical duplexers
IPC: G01S7/03
Filed: 1960-02-29
Abstract: 929,289. Waveguide duplexers. COMPAGNIE FRANCAISE THOMSON-HOUSTON. Feb. 29, 1960 [Feb. 27, 1959], No. 7022/60. Addition to 843,634. Class 40 (8). A duplexer for transmit-receive operation comprises four waveguides viz. a transmitter guide 6 connected between a transmitter E and a matched resistance 10, an antenna guide 7 connected between an antenna A and a matched resistance 11, a reception guide 8 connected between a receiver R and a matched resistance 12 containing a resonant gas TR tube 15, and an absorption guide 9 connected between matched resistances 13, 14 containing a resonant gas TR tube 16, the waveguides being coupled through (a) two 3 dB. directional couplers 17, 18 between transmitter and antenna guides, (b) two total couplers 19, 20 of the type described in the parent Specification between transmitter and reception guides and between antenna and absorption guides, and (c) a 3 dB. coupler 23 between reception and absorption guides on the sides of the TR tubes remote from the total couplers. The total couplers are arranged in the common narrow walls of the coupled waveguides and are provided with gas discharge tubes 21, 22 extending in the direction of the electric fields. During transmission, these tubes and the TR tubes 15, 16 fire and substantially the whole of the energy from the transmitter E is directed to the antenna A. Most of the energy leaking past the tubes 15, 16, 19, 20 is absorbed by the resistances 12, 13, 14. During reception none of the gas tubes is fired and the received energy passes almost entirely to the receiver R. A convenient way of arranging the waveguides is shown in Fig. 5. In this arrangement, one set of discharge tubes 42 may be used for both total couplers 19 and 20.
Patent GB-137679-A (GB)
Title: Improvements relating to fuel supply systems for internal combustion engines
IPC: F02B1/00
Filed: 1919-03-21
Abstract: 137,679. Lanchester, G. H., and Lanchester Motor Co. March 21, 1919. Liquid fuel, supplying.-Fuel-supply apparatus comprises a fuel tank a connected by flow and return pipes b, e, each provided with a pump f to a feed-chamber c connected to the carburettor. An overflow d in the chamber returns surplus fuel to the pipe e.
Patent GB-177040-A (GB)
Title: A cloth measuring or computing device
IPC: G01B5/02
Filed: 1921-03-07
Abstract: 177,040. Withers, J. S., (Grand Rapids Show Case Co.). March 7, 1921. Tabular calculators. - A callipering device for a bolt of cloth is combined with a chart, so that, given the number of folds or turns around the central core, the length of material in the bolt can be read off. The chart 1 is attached at one end to a spring roller within the casing 3 and at the other end to a rod 2. The casing 3 and rod 2 are provided with handles as shown, and with extensions 2a, 6 which form the jaws of the callipers. The chart is pulled out and the end of the bolt of cloth gauged between the jaws 2a, 6. The number of folds or turns which has been independently determined is now looked for on the scale 8 and the graduation on the chart next on the left to this number gives the length of material in the bolt.
Patent GB-1533887-A (GB)
Title: Vane type rotary pumps or compressors
IPC: F04C18/344
Filed: 1976-02-24
Abstract: 1533887 Rotary positive-displacement fluidmachines NIPPON PISTON RING KK and TOYOTA JIDOSHA KOGYO KK 24 Feb 1976 [26 Feb 1975] 07325/76 Heading F1F In a rotor for a sliding-vane pump or compressor each vane slot 7 make an angle of 3-27 degrees (preferably 14-18 degrees) with a respective radial plane 8 passing through the centre of the base of the slot. The slots are arranged so that the vanes will be tilted back slightly with respect to the sense of rotation of the rotor. The pump or compressor has pressure-loaded flexible axial sealing plates clamped between a peripheral housing member and a pair of side plates.
Patent GB-398507-A (GB)
Title: Improvements in and relating to electric power converting apparatus
IPC: H02M7/00
Filed: 1932-03-11
Abstract: 398,507. Converting. BRITISH THOMSON-HOUSTON CO., Ltd., Crown House, Aldwych, London.-(Assignees of Vodges, F. B. ; 92, Wayne Avenue, White Plains, New York, U.S.A.) March 11, 1932, No. 7342. Convention date, March 11, 1931. [Class 38 (ii).] Relates to an arrangement for interconnecting D.C. and A.C. circuits comprising a plurality of vapour electric valves and consists in connecting a capacity network having a neutral point between the valve anodes means being provided for periodically depressing the potential of this neutral point so as to interrupt momentarily the current in all the valves to enable the load current to be commutated from a valve of higher anode potential to a valve of lower anode potential. In the arrangement shown in Fig. 1, which can function either as an inverter or as a rectifier, commutating condensers 16, 17 are connected in series between the anodes of the valves 14, 15. The grids of these valves are supplied with control potentials (preferably peaky) from a phase-shifting transformer 20. A commutator 24 driven at twicesynchronous speed by a synchronous motor 29 periodically connects a battery 25 between the cathodes of the valves and the neutral formed by the condensers 16, 17. The battery is connected so that a negative potential is applied to the anodes of the valves sufficient to effect commutation of the current in the valve conducting current and allow the grid to obtain control. The choke 13 will then force current to flow through the other valve. A yoke mechanism 30 enables the phase relation between the commutator 24 and the synchronous motor 29 to be adjusted. The Specification also describes a polyphase arrange. ment. Specification 390,184 is referred to.