baber/WOPTO huggingface dataset:
Patent GB-526012-A (GB)
Title: Improvements in and relating to electric circuit control systems
IPC: G05F1/00
Filed: 1939-03-06
Abstract: 526,012. Automatic control systems. BRITISH THOMSON-HOUSTON CO., Ltd. March 6, 1939, No. 7277. Convention date, March 5, 1938. [Class 38 (iv)] Electric power.-The power in a circuit is to a degree of approximation maintained constant by regulating the sum of the voltage and current in the circuit to a constant quantity. The error introduced over the working range by the fact that the regulating. quantity is not dependent upon actual power may be compensated for by using regulating elements which work non-linearly. The voltage of the circuit 1 is applied through potential transformer 2 to a potentiometer 8 and a voltage proportional to the current in the circuit is supplied to potentiometer 4 through transformer 3 and a current transformer. These voltages are added in varying proportions by means of potentiometers 4, 8, 5 and supplied via potentiometer 9 together with a constant voltage from the discharge device 6 in the grid circuit of valve 7 which produces the regulation. For a given constant power the potentiometers 4, 5 are employed to adjust the proportions of the voltage and current dependent voltages to make the device operate at any particular point on the voltage-current curve of constant power. When it is desired to adjust to a different power value potentiometers 8, 9 are controlled together. Instead of employing potentiometers the transmission ratio of the transformers 2, 3 can be varied by altering the load 10. Voltage and current-limits are provided to the regulating range by voltage and current control paths 11, 12 in parallel with the main control path. The individual control voltages are reciprocally blocked by rectifiers 13 and are so proportioned that the one with the greatest value -normally the power - dependent one-takes over control. The method is equally applicable to D.C. generators by the use of suitably derived voltage and current components.
Patent GB-678786-A (GB)
Title: Improvements in or relating to braking devices of motor vehicles
IPC: B60T1/06
Filed: 1951-03-29
Abstract: 678,786. Vehicle wheel brake mountings. MOTO GUZZI SOC. PER AZIONI. March 29, 1951 [March 17, 1951], No. 7299/51. Class 103 (i). In the suspension system for a vehicle wheel, the shoe supporting plate 1 is made pivotable on the wheel axle and the four points formed respectively by the ends of the swinging arm 3 between a fixed frame member 5 and the axle B and the ends of a rod 6 pivoted between the member 5 and an arm A rigid with the plate 1, lie at the four corners of a deformable parallelogram.
Patent GB-450986-A (GB)
Title: Improvements in thermionic and like time-base circuits
IPC: H03K4/16
Filed: 1935-03-08
Abstract: 450,986. Valve generating circuits. GENERAL ELECTRIC CO., Ltd., Magnet House, Kingsway, London, and ESPLEY, D. C., c /o General Electric Co., Ltd., Wembley, Middlesex. March 8, 1935, No. 7339. [Class 40 (v)] Relates to means for producing saw-toothed oscillations, of the kind in which a back-coupled discharge valve of the vacuum type is used, in place of the well-known gas-filled type, and in which the required saw-toothed waveform is developed by means of two coupled inductances one in each of the back-coupled circuits. U.S.A. Specification 1,913,449 is referred to in this connection. Fig. 1 shows a known circuit of the kind in which current from the input terminals 9, 10 charges up the condenser 4 through a pentode 8 until the positive bias across a resistance 12 allows the back-coupled valve 1 to start discharging. The resulting drop in voltage across the coil 5 induces through the coil 11 a voltage on the grid 13 which accelerates the discharge. Similarly a negative grid voltage is developed as the condenser 4 charges. According to the invention, the output terminal 7 is transferred from one plate of the condenser 4, as shown, to the grid 13. The second terminal 6 is then more remote, electrically, from the cathode of the valve. This has the effect of further " sharpening " the saw-toothed wave-form. In a modified arrangement, the condenser 4 is charged (and not discharged), by the anode-cathode current through the valve 1. British Specification 438,235 also is referred to.
Patent GB-249852-A (GB)
Title: Improvements in means for locking nuts upon bolts
IPC: F16B39/24
Filed: 1926-03-17
Abstract: 249,852. Delis, R. March 24, 1925, [Convention date]. Locking nuts.-A split spring washer d has a pro jection c which engages with radial grooves b in the face of a nut and sharp projections e which engage the work. The washer is of hard steel and has a tapered end d<1>; the projections e are radial, equally spaced and of triangular section, the apex angle being very acute.
Patent GB-904597-A (GB)
Title: Improvements in the process for manufacturing a yarn consisting of a core of discontinuous fibres embedded in supports of continuous filament yarns
IPC: D02G3/36
Filed: 1959-03-03
Abstract: 904,597. Spinning yarns. ETABLISSEMENTS FRANCOIS MASUREL FRERES. March 3, 1959 [March 4, 1958], No. 7443/59. Classes 120 (2) and 120 (3). A composite yarn comprises a sliver of discontinuous, e.g. wool, fibres and two or more continuous filament synthetic or artificial, e.g. nylon, yarns, which may be bulked, intertwisted in such manner that the fibres of the sliver are gripped by the twists of the yarns. The fibres and yarns may be mixed in approximately equal proportions by weight and/or according to the required bulk, handle and/or twist in the composite yarn and whether it is intended for use in single, doubled or cabled form. The composite yarn may be formed on a " direct-spinning " machine with twist factor less than normal. As shown, a sliver 2 fed by rolls 1a, 1b is drafted by apparatus comprising rollers 3, belt 4 and lateral rollers 5, 6, 7. Untwisted filament yarns 9, 9<SP>1</SP>, are fed by a grooved separating roll 10 into the nip of delivery rollers 8a and 8b on both sides of, and with, the drafted sliver. Merged sliver and yarn are intertwisted at 11 and wound on a rotating bobbin 12. Composite yarn(s) may be bulked, before or after weaving or knitting into fabric, by treatment in water at a temperature of 80-100‹ C. to cause shrinkage of the component yarns exceeding that of the fibres. Specifications 682,263 and 692,236 are referred to.
Patent GB-470196-A (GB)
Title: Improvements in or relating to firing devices for machine guns
IPC: F41A19/55
Filed: 1936-03-12
Abstract: 470,196. Machine guns. DUNLOP RUBBER CO., Ltd., WRIGHT, J., and TREVASKIS, H. March 12, 1936, No. 7449. [Class 92 (ii)] Relates to pneumatic piston-and-cylinder means for operating, through the agency of a firing rod 6, a pivoted trigger of the form used for example in the Vicker's machine gun. According to the invention, the piston 4 engaging the cylinder 2 has abutting contact only with a firing rod controlled by a spring 9. The spring abuts at one end against a collar 13 on a fixed sleeve 7 and at the other end against a collar 8 on the rod 6 which slides in the sleeve. The rear end of the sleeve acts as a stop limiting the forward motion of the rod and piston and the spring serves to return the rod and piston to inoperative position.
Patent GB-397049-A (GB)
Title: Sole for boots and shoes for outdoor games, more especially football
IPC: A43C15/16
Filed: 1933-03-11
Abstract: 397,049. Athletic footwear. MAYER, L., 46, Hauptstrasse, Vienna. March 11, 1933, No. 7463. [Class 17 (ii).] Soles 1 of rubber or rubber composition with integral projecting studs or bars 2 for athletic footwear have reinforcing means of harder wearing material embedded in the projections and extending down or nearly down to the tread surface 6 of the studs or bars to keep that surface anti-slipping and rough. The reinforcement may be in the form of fibres or fibrous material as shown, and may be in one or more concentric coils or layers, or the reinforcement may comprise a metallic core structure joined to an anchorage which may extend into the sole portion. The reinforcement may be such that, in use, owing to the elasticity of the rubber, the lower end may project somewhat beyond the tread surface of the studs or bars.
Patent GB-115512-A (GB)
Title: Means for Controlling the Recoil of Ordnance.
IPC: F41A25/16
Filed: 1917-05-24
Abstract: 115,512. Beardmore & Co., W., and Bremberg, A. May 24, 1917. Recoil apparatus.-Relates to the type of apparatus in which a spring A arranged between a piston C on the gun D and the gun cradle B is freely compressed during recoil, an air dash-pot being employed to control the run out. The invention consists in the special means for controlling air leakage in the dash-pot to suit the angle of elevation of the gun. In the form shown, the air imprisoned in the forward end of the cylinder B passes through ports G, L to a supplementary inclined cylinder K having an outlet M controlled by a ball or other gravity-moved valve P and a secondary constant aperture R. At high angles of elevation, the ball occupies the closed end of the cylinder K, but, as the elevation is reduced, the ball, during the run out, moves nearer and nearer to the port M so as more and more to obstruct the escape of air through this port. At minimum elevation when the ball closes the port M, escape of air takes place only through the port R. Two or more cylinders K with their axes inclined at different angles may be provided.
Patent GB-348756-A (GB)
Title: Improvements appertaining to electro-magnetically operated valves
IPC: F16K31/06
Filed: 1930-03-07
Abstract: 348,756. Electromagnetically actuated valves ; accessories. MUSGRAVE, J. L. and CRITTALL & CO., Ltd., R., 43, Bloomsbury Sqmare, London. March 7, 1930, No. 7488. [Class 135.] Dashpots, applications of.-An electromagnetically-actuated valve device particularly adapted for use with a thermostat is opened by gravity and is fitted with a dashpot to retard the opening movement. In the form shown in the Figure, the valve member D is arranged to work in a dashpot cylinder d<1> adjustably mounted in a cover a<2> so that by manipulating the screwed supporting spindle d<3> the valve may be closed mechanically. In a modification the dashpot cylinder is integral with the cover and in a further modification the cylinder is supported by webs in a detachable part of a right-angle casing.
Patent GB-937061-A (GB)
Title: Fluid flow control valves
IPC: F16K31/62
Filed: 1962-02-27
Abstract: 937,061. Fluid-pressure brakes. LAMBERT BRAKE CORPORATION. Feb. 27, 1962 [March 1, 1961], No. 7616/62. Class 103 (1). [Also in Group XXIX] A valve controlling the supply and exhaust of fluid pressure to a braking system comprises a body having an axial bore from which leads an inlet port 20, and outlet port 28 to the system, and an exhaust port 32, axially spaced in that order. A valve member 96 between the inlet port and a seat 102 controls flow from the inlet to the outlet and also forms a seat for a valve member 38 controlling flow from the outlet through passage 92 to the exhaust. The valve member 96 extends into a bush 44 to form a chamber 98 which communicates with the outlet through a passage 124. The valve member 38 is formed on the end of a stem 48 which is loaded by a spring 68 towards the open position and has an abutment 70 for a spring 72 whose opposite end engages a flanged member slidable on a reduced portion of the stem. In operation, when the brake pedal 112 is depressed it acts on a cover 58 to compress spring 72 which first closes valve 38 and opens valve 96 allowing flow from the inlet to the outlet. Fluid pressure also passes through passage 124 to chamber 98 and when the brake line pressure rises sufficiently, the valve 98 closes and through movement of stem. 48 further compresses the spring 72 to provide feel. If a greater application of the brake is required the pedal is depressed further. On releasing the pedal, the compression of spring 72 is released and valve 38 is opened under the action of spring 68 to allow exhaust from the outlet 28.
Patent GB-589380-A (GB)
Title: Improved process for the manufacture of alcohol of high molecular weight
IPC: C07C29/147
Filed: 1945-03-27
Abstract: <PICT:0589380/IV/1> Alcohols of at least 6 carbon atoms per molecule are prepared by reduction of the corresponding carboxylic ester with sodium in an aliphatic alcohol at a temperature above the melting point of sodium and not exceeding the boiling point of the mixture, the reactants being dried to a degree of humidity lower than .001 per cent and, preferably, lower than .0001 per cent.  The ester preferably has an acidity index below 20 and the solvent alcohol only slight solubility in water and soda.  At least 20 parts of ester per 100 parts of alcohol by weight should be used, at least 1000 litres of reactants being treated in a jacketed spherical vessel 1 having a stirrer 8 and a reflux refrigerating device comprising an open vat 10 with a jacket for cold water.  The mixture is heated externally to about 100 DEG  C., sodium introduced at 7, and cooling effected, additional sodium being added to give p  a temperature near boiling. After a final boiling, the product is run off, water added, and the alcohols separated by distillation. In examples, coconut and spermaceti oils are reduced in amyl alcohol.
Patent GB-565936-A (GB)
Title: Improvements in or relating to rotary cutters or the grinding thereof
IPC: B24B3/02
Filed: 1943-05-15
Abstract: 565,936. Grinding and polishing. WRIGHT, A. May 15, 1943, No. 7748. [Class 60] [Also in Group VII] A rotary cutter having a plurality of teeth around its periphery and a central bore, whereby the cutter may be mounted on a driven rotary shaft for its cutting operation, has means at the surface of the bore for co-operating with means on a device in which the cutter may be mounted for grinding so that each tooth of the cutter may in turn be brought into a predetermined angular position for grinding. Preferably, the bore is formed with a groove 20 for each tooth to fit one of a pair of diametrically disposed splines on a post 22 in which the cutter is slid for grinding. Specifications 23939/11, [Class 60], and 540,142, [Group VII], are referred to.
Patent GB-900858-A (GB)
Title: An improved fastener
Inventor: FERNBERG ERIC BIRGER
IPC: F16B9/02
Filed: 1960-03-04
Abstract: 900,858. Clips; cotters. F.T. PRODUCTS Ltd. Feb. 28, 1961 [March 4, 1960; April 4, 1960], Nos. 7839/60 and 11865/60. Classes 44 and 89 (2). A fastener 10 comprises a single strip of resilient material one end portion of which is of approximately W-shape so as to constitute a head 11 having a web 12 and two flanges 13, 14 the other end portion of the strip constituting an arm 15 which is joined to a flange and extends away from the head, there being formed in the arm, an aperture 16, and the flange 13 remote from the arm, a slot 18 running out of a longitudinal edge of the strip and in the other flange 14 either an aperture or a slot 20 also running out of a longitudinal edge of the strip. As shown, the fastener is used to secure, with free pivoting movement, a cranked rod 23 to a plate 25.
Patent GB-279138-A (GB)
Title: Improvements in or relating to internal combustion engines
IPC: F02C6/12
Filed: 1923-03-20
Abstract: 279,138. Ellor, J. E. March 20, 1923. Pumping - machines; casings; cooling and heating parts. - The turbine-wheel 7 of a turbo-compressor driven by exhaust gases from an internal-combustion aero-engine is integral both with the shaft 8 and with unshrouded blades 6. The turbine casing is in two parts 19, 20 stiffened by a nozzle ring 17, which has a flange 18 on one side encircling the blades 6 and a ring of converging-diverging nozzles 16 on the other side. The casing 19, 20 is further stiffened by distance pieces 25 and is supported from the compressor casing 14 by flexible 'brackets 24, 5 the latter of which is apertured to allow the circulation of air by a fan 35. A scoop 33 deflects cooling air between the casings, cooling being helped by spaced discs 34. The compressor casing 14 which is split in the plane of the impeller encloses radial and radial-andthrust bearings 10, 11 and carries scoops 32 for leading air to fixed guide-blades 31 in the entrance chamber. To permit expansion in connecting pipes, two pipes 36, Fig. 6, are connected by welding one end of an exterior corrugated sleeve 39 to each pipe. The bearings are lubricated through regulating-devices.
Patent GB-1026485-A (GB)
Title: The reduction of unwanted thermoelectric effects in semiconductor devices
IPC: H01L23/42
Filed: 1963-02-27
Abstract: 1,026,485. Semi-conductor devices. SIEMENS-SCHUCKERTWERKE A.G. Feb. 27, 1963 [March 15, 1962], No. 7953/63. Heading H1K. In a semi-conductor device the signal output contacts are located on extensions of the semi-conductor body extending close to one another to reduce unwanted thermo-E.M.F.s. As shown, Fig. 3, the semiconductor plate 32 of a Hall generator has side arms 37, 38 to which the secondary electrodes 35, 36 are attached. The semi-conductor device may be a magnetoresistor 42 instead of a Hall plate, Fig. 4 (not shown), and the contact regions of the side arms 55, 56 may be extended and the contact end of the device mounted in a slot in a copper block 58 to maintain the two contact points at the same temperature, Fig. 5 (not shown). Thermally conductive oil may be used instead of the copper block. Indium antimonide is mentioned as a known semi-conductor material used in magnetoelectric devices.
Patent GB-693752-A (GB)
Title: Preparation of symmetrical trihydroxybenzene compounds
Inventor: KRUEGER JOHN
IPC: C07C37/50
Filed: 1950-03-30
Abstract: Symmetrical trihydroxy-benzene compounds are obtained by the action of finely-divided iron and a strong non-oxidizing mineral acid in sufficient excess to give a specified free acidity, on sym.-trinitrobenzene compounds, followed by decreasing the acidity, and hydrolysing the product.  In examples, sym.-trinitrobenzoic acid, 2 : 4 : 6 - trinitrotoluene, picric acid, and trinitroanisole, are treated as described to give phloroglucinol, tetrahydroxybenzene, or 2-methoxyphloroglucinol. Other products obtainable by the process include 2-hexyl-, 2-propyl-, 2-isopropyl-, 2-butyl-, and 2-cyclohexyl-phloroglucinol.  The carboxylic group, if present, is eliminated during the reaction.  Specifications 445/98, [Class 2], and 166,934, [Class 2 (iii)], are referred to.
Patent GB-1103343-A (GB)
Title: Method of and apparatus for automatically cutting a glass ribbon
IPC: C03B33/027
Filed: 1965-02-24
Abstract: A glass sheet 1 moving continuously forward on rollers 2 is cut transversely by a cutter 5 moving along an oblique guide 3 at a controlled speed determined by the speed of the glass and the angle #q made by the guide with the normal to the direction of movement of the glass sheet. The speed of the sheet is sensed by a roller 17 driving a pulse generator 19 actuating a counter <PICT:1103343/C1/1> 20 from which trains of pulses pass to an amplifier 21 driving a pulse motor 12 which in turn controls a coupled hydraulic motor driving a chain 10 coupled to the cutter carriage 4.  One train of pulses drives the cutter across the sheet, the cutter then being lifted from the sheet by a lug 6 engaging a member 7.  After a predetermined number of pulses (not fed to amplifier 21), during which the cutter rests at the end of its travel, a second train of pulses of reversed polarity returns the cutter to the starting position at which there is a further rest period.  The rest periods are adjusted in accordance with the size of cut glass sheet required. A pulse counter control circuit is described.
Patent GB-578741-A (GB)
Title: Improvements relating to piston-controlled admission ports of two-stroke internal combustion engines
IPC: F02B75/02
Filed: 1941-06-26
Abstract: 578,741. Cylinder ports. BEALE, E. S. L., and MUNTZ & CO., Ltd., A. June 26, 1941, No. 8051. [Class 7 (ii)] The piston-controlled inlet ports 33 of two-stroke engines, particularly of compression ignitionfree piston engines in which the piston stroke varies with the load, are constructed so that their tangential component increases, or their circumferential width decreases, towards the outer end of the ports, in order to compensate the falling-off in the swirl of the incoming charge as the piston stroke, and consequently the amount of port uncovered, increases. At the edge 35 of the ports first uncovered by the piston on its outstroke, the ports 33 have the form shown in full lines in Fig. 3, their inclinations to a radial line increasing along the ports, until at the other edge 36 they have the form shown in dotted lines in Fig. 3. The edge 35 of the port may be formed with a projecting lip to prevent the building up of carbonized oil. Specification 495,604 is referred to.
Patent GB-709993-A (GB)
Title: Below-surface treatment of molten metals
Inventor: TOUR SAM
IPC: C22B9/10
Filed: 1951-04-06
Abstract: 709,993. Treating molten metals or alloys. BATES, J. S. W. April 6, 1951, No. 8104/51. Classes 72 and 82 (1) A cartridge for treating molten metal with a small amount of an agent. consists of a container of a metal not deleterious. to the metal being treated having a cavity containing the agent, the weight of the charge and container exceeding the weight of an equal volume of the metal being treated, and at least one fuse of a metal soluble in the metal being treated and of such thickness that it wdll be dissolved when the cartridge has sunk to a predetermined level in the bath and not later than the point at which the body of the cartridge has been dissolved to such an extent that it will rise to the surface. As shown, the cartridge may have a body 1 with a cavity 2 the upper part 3 of the cavity being of a larger diameter than the lower. A fuse 4 comprising a disc of metal is placed above the charge 6 in the cavity and the sides 3 pressed inwards to seal the disc in position. A screwed plug may be used as a closure and an indent made in the other end of the body of such depth as to leave a thickness of the body metal to. act as a fuse, Fig. 6 (not shown). In a further modification, Fig. 10, fusible plugs 33, 35, may be fitted in the body and the closure respectively. Examples are given of the body metal and the fuse metal for the treatment of different metals with varying agents. A formula is also included relating the size of the cavity to the total volume'of the cartridge.
Patent GB-403361-A (GB)
Title: Improvements in or relating to absorption refrigerating apparatus
IPC: F25B17/00
Filed: 1932-03-18
Abstract: 403,361. Refrigerating. NAAMLOOZE VENNOOTSCHAP PHILIPS' GLOEILAMPENFABRIEKEN, 13D, Emmasingel, Eindhoven, Holland. March 18, 1932, No. 8110. Void [Abridged as open to inspection under Sect. 91 of the Acts, July 9, 1932]. [Class 29.] Absorption machines and systems.-The generator-absorber is provided with a burner 7 adapted to contain sufficient fuel, e.g. alcohol, kerosene, or metaldehyde, to complete the generating period. Flue tubes 8 are provided for the products of combustion.