baber/WOPTO huggingface dataset:
Patent GB-791240-A (GB)
Title: Improvements in or relating to gas-turbine engines
Inventor: WILDE GEOFFREY LIGHT
IPC: F02C3/08
Filed: 1955-04-27
Abstract: 791,240. Centrifugal and axial flow compressors; gas turbine plant. ROLLS-ROYCE, Ltd. April 19, 1956 [April 27, 1955], No. 12215/55. Classes 110 (1) and 110 (3). A gas turbine plant having a power output shaft has combustion air supplied by a twostage centrifugal compressor, arranged to be operated in normal use at about its highest adiabatic efficiency with one or two axial-flow compression stages at the inlet eye of the first stage centrifugal compressor and connected to the centrifugal compressor impeller so that they rotate at the same speed as the impeller. A stage of axial-flow blading comprises a row of rotor blades followed by a row of stator blades. The invention is described with reference to an aircraft propeller-driving gas-turbine engine. The two-stage centrifugal compressor has a single stage of axial-flow blading 32, 36 provided at the inlet of the first stage compressor 20. The compressor 20 comprises a fully shrouded impeller 22 with rotating inlet guide vanes 23 having a hub-tip ratio at their leading edge of 0.35 to 0.40. The compressor driving shaft 16 is splined not only to receive the impeller 22 and rotating guide vanes 23 but also a distance piece 29 and blade mounting ring 30. The ring 30 is formed with fir-tree channels to receive the roots 31 of a row of axial flow blades 32. A ring 33 splined to the distance piece 29 forms a continuation of the duct wall between the rotor blade platforms 32a and the rotating guide vane support ring 23a. A row of axial flow stator blades 36, mounted on the outer duct wall 35, may be fixed (as shown) or adjustable in pitch. The blades 32, 36 are of free vortex design.
Patent GB-908153-A (GB)
Title: Improvements relating to lathes for spinning material, more especially metal
IPC: B21D22/18
Filed: 1960-04-06
Abstract: 908,153. Spinning. NOURY, M., and NOURY, R. April 6, 1960 [April 6, 1959]. No. 12216/60. Class 83 (4). A lathe for spinning metal comprises a tool to act against the metal in successive passes, and an automatic control device for the tool consisting of guide means defining a series of separate tracks and follower means connected to the tool for following each of said tracks in turn whereby the position of the tool at any point in each pass is defined by the corresponding guide path. The tool operates on a workpiece 2 clamped to a former 1 and is mounted on a carriage 4 provided with a cam follower 7 for engaging successively cams A, B, C, D and E carried on a support 8. As soon as a pass has been completed on one of the cams the cam support 8 automatically brings the next cam opposite the follower 7. The cams allow the tool to effect a return travel while in working contact with the workpiece.
Patent GB-1157219-A (GB)
Title: Improvements relating to Liquid Mixing Systems
Inventor: HIGGINS GEORGE HENRY
IPC: G05D11/00
Filed: 1967-03-15
Abstract: 1,157,219. Mixing flowing liquids in proportions. COVENTRY CLIMAX ENGINES Ltd. 19 Feb., 1968 [15 March, 1967], No. 12228/67. Heading B1C. In apparatus for mixing water and a liquid foam forming compound, the flow of one of the liquids is controlled by a governor valve which is subjected to opposed biassing forces derived respectively from flow sensing means in one of the liquids, and in the other liquid or in the mixture. As shown foam compound is pumped through inlet 10, ports 12, 14 in the sleeve valve 13, outlet 16, pipe 4, orifice 36 and pipe 6; the flow through the sleeve valve 13 does not exert any bias on it as its closed ends are of equal area but it is subjected to the bias in a downward direction on the connected piston and diaphragm assembly 22, 23, 24 caused by the pressure drop across the orifice 36 acting through pipes 4, 45.  The foam forming compound is mixed with water in the pump 7, 8 and the mixture is discharged through a restriction 9 the pressure drop across which acts through pipes 43, 44 to bias in an upward direction the piston and diaphragm assembly 27, 28, 29, the bias being transmitted by push rod 26 to the sleeve valve 13. The valve takes up an equilibrium position in which the flow through parts 12, 14 is adjusted to a rate at which the biasses are equal. As described there are seven orifices 36 of equal size each providing a one per cent admixture and a plate 37 can be rotated so that a cut-away portion 40 uncovers any desired number of them.
Patent GB-290818-A (GB)
Title: Improvements in or relating to mortised tubular locks or latches
IPC: E05B63/08
Filed: 1927-05-06
Abstract: 290,818. Thompson, H. A., and Nettlefold & Sons, Ltd. May 6. 1927. Latches, sliding ; striking - plates for locks and latches; locks, cases and bolts for; keyhole escutcheons.-The casing P of tubular mortice locks has a chamfered or bevelled edge D<1> of slightly greater diameter than the casing. The striking-plate E has a similar edge E<1>. Both the casing D and plate E are forced home into a hole drilled to receive them easily, and are retained by screws G engaging lune-shaped countersunk recesses D<2> in the outer face of the edge. The bolt B has a central projection B<1> to determine the centre of the hole for the striking-plate. The keyhole plate F carries a disc F' of smaller diameter than the hole A, which is the same size as the hole C tor the casing D., to allow for adjustment.
Patent GB-500843-A (GB)
Title: Improvements in and relating to machines for decorticating bast fibre stalks
IPC: D01B1/28
Filed: 1938-04-23
Abstract: 500,843. Decorticating flax &c. ETRICH, I. April 23, 1938, No. 12271. Convention date, April 23, 1937. [Class 120 (i)] In a machine for decorticating flax, hemp, and like bast fibre stalks of the kind in which the stalks are passed through pairs of breaking rollers and while held thereby or by gripping rollers, are beaten by scutching drums 7, 7<1>, Fig. 1, after which the direction of rotation of the breaking rollers 2, 2<1> is reversed and the stalks returned to the operator for reversal, the axes of the scutching drums are arranged below the breaking and gripping rollers which are driven through clutches 10, 101, Fig. 3, actuated by an operator from the feed end of the machine whereby the direction of rotation of the breaking rollers is reversed or the rotation stopped by disengaging the clutches. The stalks are spread on the apron 4, and by the attendant at A leaning to one side and moving the lever 11, the clutch 10 is engaged so that the stalks are fed on the apron 4 between smooth pressing rollers 3 to the bending or breaking rollers 2, 21 and are held fast between the roller 5 and the last lower breaking roller 2<1> while the lower ends are scutched by the drums 7, 7<1>. The attendant then leans to the other side disengages the clutch 10 and engages the clutch 10<1> thus reversing the rollers and apron 4. The stalks are then reversed and fed forward for the scutching of their other ends.
Patent GB-418677-A (GB)
Title: Improvements in or relating to endless conveyors
IPC: B65G69/16
Filed: 1933-04-27
Abstract: 418,677. Endless - belt conveyers. MITCHELL, F. G., Albyns, near Romford, Essex. April 27, 1933, Nos. 12274 and 13494. [Class 78 (i).] In apparatus for lowering granular materials of the kind comprising a pair of endless belts, the adjacent faces of which are arranged to travel in the same direction and to grip the material between them, the downwardly carrying surfaces of the belts 1, 2, Fig. 1, follow a normally vertical path and the gripping of the material is effected partly by longitudinally tensioning the belts by springs 12, weights, or the like, and partly by the action of a series of transversely extending, individually flexible guides 11 or equivalent means. In one construction each guide 11 comprises rollers 15, 15a, 15b, Fig. 2, the spindles of which are connected together and to the framework 9 by springs 17, 18, respectively. Adjusting screws 20 are provided for varying the tension of the springs. In another construction each guide comprises a single spring extending the width of the belt. In a further construction material is delivered by a shoot 21, Fig. 4, on to the horizontal upper run 1<b> of a conveyer 1 which extends downwards in contact with a series of non-flexible movable guide rollers 25 mounted on a series of pivoted members 35 forming a lazytongs arrangement. This belt passes also around a series of pulleys on a framework 22, one of which 29 is movable horizontally to maintain taut the belt as the lazytongs is expanded or contracted. The belt 1 co-operates with a belt 2 which is mounted on a non-telescopic framework 37 and acted on by flexible guides 11.
Patent GB-987591-A (GB)
Title: Keyboard transmitter for teleprinters and data-processing input devices or similar apparatus
IPC: H04L13/16
Filed: 1962-03-30
Abstract: 987,591. Selective printing. CREED & CO. Ltd. March 30, 1962 [April 1, 1961 (2); April 27, 1961 (2)], No. 12288/62. Heading B6F. [Also in Divisions G4 and H4] The invention relates to a keyboard apparatus, e.g. a teleprinter or data processing input device, wherein it may be required to change from one code to another. To permit such a change each key lever is provided with a detachable comb 1 which represents a character in a first code when mounted as shown and a character in a second code when reversed and affixed to another key lever. Thus one set of combs is able to represent two codes. Depression of a character key causes one bar of each of a number of pairs of selector bars 25a to move vertically and thereby a setting bar 25b to move horizontally to the right or the left. This action sets the transmitter contacts. Depression of any key moves release bar 44 vertically and causes the transmitter clutch to be operated. Each character key lever has a detachable cog 28 which co-acts with toothed bar 18. When the letter shift key is pressed bar 18 is moved to the right by a small amount and the teeth and cogs are then in such a relative position that only the letter keys can be depressed. The bar 18 moves to the left if the figure shift key is pressed, and then only figure keys can be pressed. To facilitate alteration of keyboard layout or change of combs 1, the keys levers are readily detachable from the machine bed, the forked end of each key lever being held against a pivot bar 10 by a spring 12, Fig. 3.
Patent GB-295419-A (GB)
Title: Improvements in or connected with plansifters and similar vibratory machinery
IPC: B07B1/46
Filed: 1927-05-09
Abstract: 295,419. Robinson & Son, Ltd., T., Robinson, W. N., and Tweedale, J. May 9, 1927. Plansifters.-In plansifter machines, the sieve boxes are clamped between fixed supports at the outer ends of the frames, and adjustable supports actuated by toggle &c. devices at the inner sides of the boxes. In the construction described, the frame comprises two longitudinal channel members 2 which are braced together at intervals by transverse tie rods 18, 18x. The sieve boxes 1 rest on bars 5 supported from the members 2 by rods 13, 6, 15, and are clamped vertically by bars 12 and rods 13, 15<x> ridge members 16 and nuts 17. The corners of the sieve boxes are embraced by angle, members 3, and intermediate T-shaped members 4. At the outer ends of the members 2, hooked members 22, pivoted at 23 and held by the rods 18x form a fixed abutment for the angle members. Longitudinal clamping of the boxes is obtained by a toggle device bearing on the inner member 3 and moving all the assemblage against the fixed hook members 22, the rods 18 being allowed freedom of movement for this purpose. The toggle device consists of two arms 25 pivoted together on a pin 26, one arm bearing against a fixed abutment 27. The device is actuated by a screw stud 29, which is provided with a compression spring 34 to maintain the parts in position when the clamp is released.
Patent GB-373369-A (GB)
Title: Improvements in and relating to arc welding electrodes
IPC: B23K35/365
Filed: 1931-04-27
Abstract: 373,369. Uniting by fusion. BRITISH THOMSON-HOUSTON CO., Ltd., Crown House, Aldwych, London.-(Assignees of Brophy, G. R. ; 19, Dean Street, Schenectady, New York, U.S.A.) April 27, 1931, No. 12410. Convention date, April 30, 1930. [Class 83 (iv).] A metallic arc welding electrode is provided with a coating containing a non-fibrous comminuted cellulosic material having an appreciable ammonia content, which disintegrates during the welding operation so as to produce a protective atmosphere. It is mixed, preferably in equal parts with a finely divided slag-forming material such as clay, e.g. china clay, so as to form a thin coating of flux on the deposited metal. The cellulosic material may consist of bagasse flour obtained after the fibrous portion of sugar-cane as it comes crushed from the mill has been removed. Any fibrous material contained in the flour is brought to a fine powder by grinding. Such flour is stated to burn in the arc forming a gaseous mixture containing hydrocarbons, carbon monoxide and dioxide, nitrogen and hydrogen. The powdered materials are mixed with a water-soluble silicate such as sodium silicate having the Na2O and SiO2 in the ratio of 2: 1. 5 to 15 per cent of metallic oxidizers such as powdered manganese and titanium may also be included, the titanium also serving as an arc stabilizer. One mixture may consist of 16 per cent of sodium silicate, 38 per cent of powdered bagasse flour, 38 per cent of fireclay, 4 per cent of manganese, and 4 per cent of titanium. The coating may be applied by dipping or extrusion and is then dried and baked. Its thickness may be one-fifth that of the diameter of the electrode. Specifications 301,221, [Class 83 (iv), Metals, Working], and 353,499 are referred to.
Patent GB-924101-A (GB)
Title: Sawing device
IPC: B28B11/14
Filed: 1961-04-07
Abstract: 924,101. Sawing. SKOVDE GASHETONG A.B. April 7, 1961 [April 20, 1960], No. 12536/61. Classes 124 and 145. A device for sawing, for example, light weight concrete blocks 13 comprises a structure 1, a framework 3 vertically adjustable on the structure, and a saw 8 carried by and reciprocable relative to the framework. Saws which may be wires or blades are stretched between beams carried at the lower end of arms 6 which are pivoted at 7 to the framework. The upper ends of pairs of arms are connected by a bar 9, and the upper end of one arm is connected by a rod 10 to an eccentric 11, rotation of which reciprocates the saws.
Patent GB-734453-A (GB)
Title: Method of making circuit connections to a transducer unit
IPC: H01L41/22
Filed: 1953-05-06
Abstract: 734,453. Piezo-electric transducers. CLEVITE CORPORATION. May 6, 1953 [May 17, 1952], No. 12601/53. Class 40 (8). A multiplate transducer comprising plates of, e.g., barium titanate with an inner electrode between two of the plates is connected, for purposes of polarization, to an external circuit by pressing one edge of the transducer against a conductor to effect contact with the inner electrodes, the outer electrodes being insulated from the conductor by a non-conducting margin along the edge. Small sheets of barium titanate may be prepared by the dipping and firing processes described in Specification 663,424. These sheets are trimmed and cut into strips having a width equal to the desired length of the transducer. Each strip is provided with a conductive coating by dipping the strip in a suspension of a powder containing silver particles and a vitreous binder in a suitable vehicle such as toluol. The edges and a narrow margin along one side (the outer side) of each strip are wiped clean and the conductive coating is fired. The inner side of each strip is then tinned and the strips sweated together in pairs. Finally the strip is cut along its narrow dimension to produce a number of transducers 23, Fig. 2, each having two plates 24, 25 joined by an inner electrode 26 extending to the lower edge and having also two outer electrodes 27, 32 spaced from the lower edge by a margin 28. At this point in the process leads 31, 33 are connected to the outer electrodes. In order to apply a polarizing voltage to the transducer plates a number of transducers are mounted in an insulated holder 36 by means of rows 'of phosphor-bronze spring contacts 38, 39 which hold the lower edge of each transducer in contact with a corresponding yieldable conductor 42 having a terminal 44. The members 42, which may consist of metallic brushes or rubber pads pigmented with acetylene black, contact the edge of the inner electrodes 26 but are insulated from the outer ones by the margins 28. The holder 36 is adapted to clip into a further holder 46 having rows of spring contacts 48, 49 which contact the springs 38, 39 and are connected in parallel through resistors 52, 53 (# 10 M#) to a terminal 57. A polarization voltage of, e.g., 20 kv./in. is applied for 10 or 15 minutes across the terminals 44, 57. The holders may be immersed in oil at a desired temperature during this time. To test the effectiveness of the polarization a voltmeter is connected between the terminal 44 and each of the contacts 38, 39 in turn. Wherever a short-circuit occurs a voltage lower than the full polarization voltage will be registered since a portion of this voltage will be dropped across one of the resistors 52, 53. The holders may be tested for continuity with the transducers in position by means of an A.C. voltage applied across the terminals 44, 57. U.S.A. Specification 2,486,560 is referred to.
Patent GB-725210-A (GB)
Title: Improvements in or relating to a method of fitting a rotor on a shaft by means of anintermediate bushing and products made in accordance with such methods
IPC: F16B4/00
Filed: 1953-05-06
Abstract: 725,210. Making dynamo-electric machines. PHILIPS ELECTRICAL INDUSTRIES, Ltd. May 6, 1953 [May 9, 1952], No. 12615/53. Classes 83 (2) and 83 (4). Assembling force fits.-A method of assembling in coaxial relationship a rotor 1 having an axial bore 6, a bushing 2 for the rotor and a shaft 3 is characterized in that the shaft and bushing have a sliding fit with each other and. that the bushing is a force fit within the rotor bore and that during assembly the shaft is inserted within the bushing which is supported at one end by a part of a pressing machine, the rotor being subsequently forced over the bushing to lock the parts together. The assembled shaft and bushing is arranged in a press the bushing being supported by a pin 8 and the shaft centred in a cavity 7 in the pin. The bushing projects above a table 9 supported on a spring 10 and the rotor is placed on the table over the projecting end of the shaft. The rotor is rotated relatively to the bushing while being forced on to the bushing, the shaft being mainly subjected to a radial loading k (Fig. 5) during the pressing operation.
Patent GB-456313-A (GB)
Title: Improvements in grips for hose supporters and the like
IPC: A41F11/04
Filed: 1936-05-05
Abstract: 456,313. Stocking-suspender grips. BERGER BROS. CO., 135, Derby Avenue, New Haven, Connecticut, U.S.A. May 5, 1936, No. 12705. Convention date, May 20, 1935. [Class 44] A hose supporter, comprising a loop engaging a button, has the button mounted on the convex side of a transversely curved base plate so that the edges of the plate do not damage the stocking. A button 15 engaged by the narrow end 13 of a wire loop 12 is riveted to a transversely curved plate 17 have slots 19, 18 for the passage of a fabric loop 21. The parts between the slotted ends of the plate are cut away as shown at 20.
Patent GB-149097-A (GB)
Title: Improvements in coin freed gas meters
IPC: G07F15/10
Filed: 1919-05-22
Abstract: 149,097. Matthews, J. May 22, 1919. Registering.-A gasmeter in which a measuring wheel or shaft is rotated in one .direction to turn on supply and in the opposite direction by the registering-mechanism for cutting off supply when the prepaid quantity is consumed, is fitted with a lever which is moved in the plane of the coin-holder to register the passage of the coin. For this purpose, the rotation of the coin-holder, after insertion of the coin, carries the coin past the cam-shaped end b<2> of, and rocks, a lever b pivoted at a<1> on the fixed cam plate a of the mechanism, and the lever acts through a rod d extending into the meter casing to operate a bellcrank e pivoted on a slide f and engaging a ratchet wheel k on a spindle j extending through the casing and carrying a pointer movable over a dial to register the coin value, e.g. a penny. The central part of the spindle j is formed as a wheel to drive a wheel l<1> on a spindle l with a pointer to register shillings, and the spindle l drives through the wheel m<1> a spindle m with a pointer to register pounds. The plate k slides on fixed studs g and is retracted by a spring n.
Patent GB-296291-A (GB)
Title: Improvements in the manufacture of tubular gear chains
IPC: F16G13/02
Filed: 1928-05-02
Abstract: 296,291. Soc. Anon. Ancienne Maison Galle. Nov. 24, 1927, [Convention date]. Addition to 288,640. Driving-chains with separate joint pins.- Tubes for connecting the side plates of the inner links of gear chains and formed as described in the parent Specification are of circular section at 4, Fig. 2, between the plates while their ends 4a are of U-shape for engagement in the plates. Projections 1<a> are formed on the inner link plates to prevent the dismantling of the chain, by the aid of key-hole slots 14 as described in the parent Specification, except when adjacent links are turned to an abnormal angle as shown in Fig. 6.
Patent GB-870891-A (GB)
Title: Improvements in or relating to nuclear reactors
Inventor: NEILSON IAN DOUGLAS
IPC: G21C15/04
Filed: 1959-04-16
Abstract: 870,891. Nuclear reactors. HAWKER SIDDELEY NUCLEAR POWER CO. Ltd. April 11, 1960 [April 16, 1959], No. 12955/59. Class 39(4). In a heterogeneous reactor using uranium fuel enriched with up to 1% Pu by weight and having one organic liquid as coolant and moderator in an under-moderated lattice, the organic liquid is divided into two flows in the core: a fast-moving coolant flow adjacent to the fuel, and a slower moderator flow separated from the fuel by and occupying twice as much core volume as the coolant flow. The moderator flow is adjusted to produce littlerise in moderator temperature in the core so that the response of the reactor depends on the negative temperature coefficient of reactivity of the fuel. The Figure shows stainless steelclad fuel rods F enclosed by tubes T inside which is the coolant flow and between which is the moderator flow, at M. The two flows pass through separate heat exchangers; the coolant flow can be switched to the moderator heat exchanger for emergency cooling, this exchanger being smaller and more easily shielded. The moderator can be drained off in an emergency.
Patent GB-246433-A (GB)
Title: Improvements in and relating to lens systems for signal lamps
IPC: B61L5/18
Filed: 1925-05-18
Abstract: 246,433. Westinghouse Brake & Saxby Signal Co., Ltd., (Assignees of Wells, W. B.). Jan. 23, 1925, [Convention date]. Lenses.-A signal lamp of the kind comprising two spaced lenses 2, 5 with concentric ridges 4, is provided with means adapted to absorb light rays from an external source. As shown, the lens system is fitted with frusto-conical shields 8 and with central intersecting strips or ribs 9, which do not interfere with the refraction and emission of the light from the electric bulb A, but absorb stray beams, such as sunlight, entering the system along lines such as 11.