baber/WOPTO huggingface dataset:
Patent GB-1191343-A (GB)
Title: Improvements in or relating to Ingots and the Manufacture Thereof
Inventor: TIGERSCHIOELD BO MAGNUS
IPC: B22D7/10
Filed: 1967-02-11
Abstract: 1,191,343. Ingot moulds; lining moulds. UDDEHOLMS A.B. 10 May, 1968 [11 Feb., 1967], No. 6635/67. Heading B3F. An ingot 1 of rectangular cross-section, has a circular sink-head 5 which is joined to the main body of the ingot 2 by a transition portion 4 that has bevelled faces 6. The lower edge 7 of transition portion is rectangular but the upper edge 8 curves upwardly from its nearest approach 9 to the ingot body 2 (midway of the sides of the body) to the rounded corners 10 of the body. The angle between the bevelled faces 6 and the ingot axis is preferably 30 to 50 degrees. The ingot is cast in a mould having a hot top shaped to form the above sink-head and transition portion. A former (Fig. 6) is placed in the top of the ingot mould and there supported by the projections 11. A hot top composition is packed around the ingot mould top and hardened by CO 2  gas. The former is then collapsed (see Fig. 5) and withdrawn leaving a moulded hot-top lining. A top 14 and eight sections each with an upper and lower part make up the former. Four lower parts 21 mould the rounded corners of the hot-top, while the flat parts 20 mould the flat bevelled surfaces. Eight upper parts 18, 19 form the cylindrical sink head, the lower parts 20 being pivotally attached to parts 18 and the parts 19 being attached to a handle 12 by an " umbrella type mechanism (not shown). When the handle 12 is pulled the former collapses as shown in Fig. 5.
Patent GB-527289-A (GB)
Title: Improvements in or relating to change speed gearing
IPC: F16H61/02
Filed: 1939-03-01
Abstract: 527,289. Change-speed gearing. BOSTOCK, F. J., and BOSTOCK & BRAMLEY, Ltd. March 1, 1939, No. 6647. [Class 80 (ii)] In a control system for a change-speed gear for a rail .vehicle &c. a rotational shaft carries cams which control automatically the sequential operation of selector rods, reversing gear and clutch. The shaft 1 carries cams 8/F, 8/R, 8/1, 8/2 notched to allow movement of plungers 9F, 9R, 9/1, 9/2 positioned over notched selector bars 2/F, 2/R, 2/1, 2/2 carrying forks for operating the gear pinions. Diaphragms 10, 10a when under pressure axially move the selector bars. Cams 5, 5a on the shaft control air valves 6, 6a for supplying air to the system and to the diaphragms 10, 10a. A one-way cam 19 operates the air valve 20 of a clutch diaphragm 22. Reversing clutch 29 is operated by a diaphragm 28 from a cam 25. To change from neutral to forward the shaft 1 is rotated and cam 5 opens valve 6 admitting air to the system and to the diaphragm 10. The cam 8/F permits movement of the selector bar 2/F. The reversing cam 25 opens valve 26 to operate the slow speed reversing gear 30. The bar 2/F moves and raises the plunger 9/F operating a valve to cut off pressure from the system through bell-crank 11. To change to first gear position the shaft 1 is rotated to cause cam 5a to open valve 6a placing the diaphragm 10a under pressure. The bar 2/1 is freed to move. The cam 19 opens the valve 20 to actuate the clutch 23, and the plunger 9/1 rises to cut air off through the operation of a bell-crank 11a. The mechanism may be operated by pneumatic electric or manual means.
Patent GB-405126-A (GB)
Title: Improvements in and relating to roofing tiles
IPC: E04D1/04
Filed: 1933-03-04
Abstract: 405,126. Roofing-tiles. LUDOWICI K.-G. A. AKT., C., Jockgrim, Pfalz, Germany. March 4, 1933, Nos. 6654 and 6655. Convention dates, April 23, 1932 and Sept. 17, 1932. [Class 87 (i).] An interlocking roofing-tile comprises one or more head ribs e, f, a bottom closing rib g set back and adapted to engage with the head rib f of the next lower tile, an upwardly directed rib at one side forming the boundary wall of a main drainage trough b, said wall having an auxiliary trough b<1> formed therein, and a pair of underneath side closing ribs c, a, adapted to engage respectively with the troughs b, b<1> in the adjacent tile. The top edge of each tile is formed with a rib p for securing to the rafters, while the lower end of the tile is curved round as at n. A central longitudinal rib k is provided with a hole o<1> for tying, and joins a further transverse rib l with similar holes. The rib f has two gaps therein for the escape of water, and is joined to the rib e by short longitudinal ribs which engage corresponding slots in the ribs g of the tiles above. Modifications may be made in the ribs e, f, g to permit longitudinal adjustment of the tiles, and the ends of the lower edge n may be notched to facilitate the escape of water from the trough b.
Patent GB-548921-A (GB)
Title: Improvements in and relating to air or gas blast electric circuit breakers
IPC: H01H33/32
Filed: 1941-05-29
Abstract: 548,921. Gas-blast switches. FLURSCHEIM, C. H., HOLMES, H., PEARSON, A. B., and METROPOLITAN-VICKERS ELECTRICAL CO., Ltd. May 29, 1941, No. 6901. [Class 38 (v)] The cylindrical or other tank 1 of a gas-blast switch is extended beyond the end wall 8 so as to provide a space in which is housed, and supported on wall 8, an air or other servo motor 9 for operating contacts mechanically, the space being closed by a plate 10. The wall 8 may, for example, be inserted into the tank 1 from one end. The arc-extinguishing contact-assemblies 3 of a three-phase switch are mounted in insulators 2 on the tank and are opened by the blastgas pressure. A set of isolating blades A, cooperating with contacts 5, are pivoted to the assemblies 3 and operated through insulators 18 and cranks 17 from a common shaft 11 which, in an annex 14 of the tank 1, houses a crank 15 connected by rod 16 to a crank 17 of the servo motor 9. The application to a switch in which the movable blast contact is itself servo actuated is also described and illustrated, Fig. 3 (not shown). The space may also house blast and control valves, auxiliary switches, and interlocking means.
Patent GB-214059-A (GB)
Title: Improvements in driving mechanism for looms for weaving
IPC: D03D51/00
Filed: 1923-03-10
Abstract: 214,059. Hollingworth, E., (Crompton & Knowles). March 10, 1923. Driving-arrangements.- Wide looms are provided with a separate powerapplying device at each side of the loom, connected driving-mechanism operating at both sides of the loom, and friction connections between the powerapplying devices and the driving-mechanism at each side of the loom. As shown, each side of the loom is provided with a motor 20, Fig. 1, geared to a wheel 23 loose on a shaft 24 carrying a pinion 29 in mesh with a wheel 30 on a countershaft 28. The countershaft is geared to the loom crankshaft 11 by elliptical gearing 33, 34 and eccentric gearing 31, 32. To start the loom, each wheel 23 is moved into contact with a friction disc 27 fast on the shaft 24 by link and lever mechanism 48 - - 60, Fig. 4, controlled by linked shipper levers 46 at either side of the loom. The bell-crank lever 52 carries a rocking lever 54 for equalizing the load imposed on the motors. Springs 62 normally draw the friction discs 27 away from the gear-wheels 23.
Patent GB-931703-A (GB)
Title: Improvements in advertising signs
IPC: G09F13/26
Filed: 1959-02-27
Abstract: 931,703. Signs. S. G. FORD. Dec. 22, 1959 [Feb. 27, 1959], No. 6984/59. Class 3 (2). A sign comprises a base 1 in the form of a trough-shaped member which is provided with clips 5 to releasably position in spaced relationship thereto a character face 7. The member 1 is made of metal or plastic whilst the member 7 may be made of polymethylmethacrylate provided, if desired, with internal illumination 2.
Patent GB-735592-A (GB)
Title: Improvements in or relating to television equipment
Inventor: DONNAY JACQUES RENE
IPC: H04N5/16
Filed: 1953-03-13
Abstract: 735,592. Television. RADIO-INDUSTRIE. March 13, 1953, No. 6998/53. Class 40 (3). In a television transmitter in which pedestal pulses are produced in the video waveform by the action of a limiting device on high amplitude pulses introduced into the waveform during retrace periods variation of the level at which the limiting device operates caused by the lowfrequency component of the video signal is compensated by producing a similar variation in the high amplitude pulses. As shown in Fig. 1 the composite signals, comprising video signals derived from stage 1 and high amplitude pulses derived from generator 13, cathodefollower 15 and amplifier 2, developed across resistor 5 are supplied to a limiting device 11 which produces the desired pedestal pulses in the composite signal output from condenser 12 by limiting the high amplitude pulses at a level determined by the setting of potentiometer 9. This level, however, tends to vary due to variations in the potential of the cathode of device 11 caused by the low-frequency component of the video signal (since condenser 29 cannot, in practice, be made of sufficiently high capacity to hold the cathode at a steady potential) and to counteract this variation the high amplitude pulses are caused to vary in a similar manner by modulating them according to this low-frequency component. This is effected by rectifying the video signals by means of diode 19 and supplying the signal developed across condenser 21, which due to the integrating action of 21, 22 comprises the low-frequency component only, to the control grid of amplifier 2. During the occurrence of the high amplitude pulses (i.e. the blanking periods) the D.C. setting diode 18 is non-conductirig (due to the positive high amplitude pulses on its cathode) and during the occurrence of vision signals diode 18 conducts until the negative charge on condenser 26 brings the anode of diode 18 to earth potential (negatively going video signals being supplied at terminal 4). The control grid of amplifier 1 is then held at this potential which sets the level of the positive peaks in the applied video signal.
Patent GB-491929-A (GB)
Title: Improvements relating to electric switches of the tumbler type, or like electrical fittings
IPC: H01H23/04
Filed: 1937-03-10
Abstract: 491,929. Covers for couplings. BAIN, R., and ALLDAY, N. March 10, 1937, No. 7020. [Class 38 (i)] [Also in Group XXXVII] A flush - mounted socket member has a main cover plate a secured by screws (not shown) and an auxiliary cover plate b which closes a central aperture in plate a and serves to cover the fixing screws. The plate b is held in position by a spring catch h on the plate a engaging an undercut portion of plate b and tightened by a concealed screw i.
Patent GB-180766-A (GB)
Title: Improved process of and apparatus for manufacturing paper
IPC: D21F1/02
Filed: 1921-03-04
Abstract: 180,766. Wade, H., (International Paper Co.). March 4, 1921. Fourdrinier paper-machines.-In apparatus for delivering pulp to the forming wire, the pulp flows in an uninterrupted stream down a sloping surface or dam 7b held down yieldingly by springs 12 against the action of a flexible rod 21 which may be adjusted throughout its length to ensure regularity in the flow of pulp by a number of adjusting rods 20 threaded in a bar 10<a>. An internal overflow chamber 25 in the head box 1 carries away foam which is skimmed from the surface of the stock by an adjustable weir 26.
Patent GB-1441462-A (GB)
Title: Method and apapratus for liquid chromotography
IPC: G01N30/34
Filed: 1973-02-14
Abstract: 1441462 Liquid gradients; chromatography UNIVERSITY OF EDINBURGH 14 Feb 1974 [14 Feb 1973] 7142/73 Headings BIC and B1H A method of preparing a liquid sample gradient (e.g. an elution sample for high-speed chromatography) comprises filling with a first liquid an elongate tube the dimensions of which are such that any sharply-defined bond of one liquid in a surrounding liquid is always disparsed in a reproducible way when it is passed through the tube, replacing at least part of the first liquid with a second liquid, the composition of which moves along the tube in a predetermined manner, and discharging the second liquid under pressure to yield the desired (elution) sample. The tube may be filled with a particulate material e.g. glass beads, polymer beads, silica gel chips, kieselguhr or ground pumice. The second liquid may be a bonded liquid which disperses to form a liquid gradient, or a uniform liquid which provides a sample having a concentration gradient on the leading and trailing fronts. An apparatus may comprise a tube 1 which is initially filled with the first liquid from a pressurisation device 18; second liquid is then admitted from a low pressure device 14, displaced first liquid being discharged at 9, and the samlple formed by discharging the second liquid by pressure from the device 18, to a chromatographic column 15. Particulate material is retained in the tube by a frit (3, Fig. 2) and there may also be a flow improver frit 13. A chromatographic column may be regenerby passing through it a liquid whose composition changes in a reverse sequence to that originally fed to the column, and which is prepared by the above method either in the tube 1 or in a tube in parallel therewith.
Patent GB-717780-A (GB)
Title: Improvements in or relating to triggering arrangements for electrical scale-of-two counter circuits
Inventor: LUCAS JOHN HAROLD
IPC: H03K3/12
Filed: 1952-03-19
Abstract: 717,780. Multi-stable state circuits. VICKERSARMSTRONGS, Ltd. Feb. 11, 1953 [March 19, 1952], No. 7146/52. Class 40 (6) A trigger-pair circuit comprising two triode valves has the feed-back connection taken from the anode of each valve to the grid of the other via a capacitor and two series resistors connected in parallel with it, the junction of each pair of resistors being connected to the input pulse lead via a diode poled to pass negative input pulses and positive input pulses being bye-passed to the common cathode load via a third diode. The Figure shows a trigger-pair circuit comprising two cathode-coupled triode valves Tl, T2, which have their respective anodes connected to the control grids of the other valve via capacitors FC1, FC2 and via the series resistors R1, FR1 and R2, FR2 which are respectively connected in parallel with the feed-back capacitors. Negative-going triggering pulses are applied to the input lead IL and thus via diodes D1, D2 and resistors R1, R2 respectively to the control grids of the triodes T1, T2. Diode D3 prevents the potential at point I rising above that of the common cathode lead CL and suppresses spurious positive input pulses. Resistors R1, R2 buffer the input circuit from the anodes of the triodes T2, T1 respectively thus enabling the change-over of the circuit to be less dependent upon the shape of the triggering pulses. Diodes D1, D2, D3 may be thermionic diodes or selenium or germanium crystal diodes.
Patent GB-816338-A (GB)
Title: Improvements in or relating to methods of generating and manufacturing a refractive surface in an optical system having a progressively variable focal power
IPC: E21B19/06
Filed: 1956-03-07
Abstract: 816,338. Grinding lenses &c. SOC. INDUSTRIELLE ET COMMERCIALE DES OUVRIERS LUNETIERS, COTTET, POICHET, TAGNON & CIE. March 7, 1956 [March 9, 1955], No. 7212/56. Addition to 790,310. Class 60. Relates to a process for cutting in a piece of transparent material of uniform index of refraction or in a piece of other material intended to constitute a mould, a surface of the form defined in claim 1 of the parent Specification, the surface being crossed by a principal line along which the two main radii of curvature are equal to a common value increasing progressively along the line, in which process use is made of a cutting machine adopted to cut a generating surface having a principal line, the sections of said generating surface in planes normal to the main line having at the points on the principal line radii of curvature of valves graduated according to the common values of the main radii of curvature of the progressive surface along the principal line thereof ; the process comprises the steps of rigidly disposing the machine fixedly to locate the generating surface, setting the machine into continuous cutting movement, rigidly fixing the material to be cut on a mounting, imparting to the mounting a continuous movement relative to the machine and to the generating surface, the generating surface defining the progressive surface on the material to be cut by the envelope of the successive positions of the generating surface relative to the mounting of the material to be cut and the principal line of the generating surface defining the principal line of the progressive surface by the envelope of the successive positions of the principal line of the generating surface relative to the mounting of the material to be cut, and arranging the continuous movement of the mounting relative to the generating surface so as to satisfy the condition that each element of the principal curve of the progressive surface is generated by contact at one point with the principal curve of the generating surface having the same radius of curvature as the section of the generating surface at the same point by the generating surface at the same point. The body on which the surface V is to be generated is rigidly secured on a mounting E which also carries a cam C rolling without sliding on a cam C 1  which is movable or fixed. The surface V is constantly tangential to a fixed generating surface S, the principal line G of which has the evolute g. The sections of the surface S through planes normal at points T to the line G are curves of which the centres of curvature lie on a curve W. The cams C, C 1  are so chosen that the generation, through the rolling of C on C 1  at the contact point I, and possibly through the displacement of C 1 , will give a curve V of which the centres of curvature at the points of contact with G lie constantly on W. Several applications of the principle are described.
Patent GB-350520-A (GB)
Title: Improvements in and relating to electric transformers
IPC: H01F27/28
Filed: 1930-03-05
Abstract: 350,520. Electric transformers; inductances. BRITISH THOMSONHOUSTON CO., Ltd., Crown House, Aldwych, London.-(Assignees of Palueff, K. K. ; 18, Laflin Terrace, Pittsfield, Massachusetts, U.S.A.) March 5, 1930, No. 7216. Convention date, March 5, 1929. [Class 38 (ii).] In a transformer equipped with a shielding structure similar in principle to the arrangements described in Specifications 173,606 and 178,609, [both in Class 38 (ii), Electric currents, Converting &c.], the high-tension winding comprises two groups of turns 15, 16 each surrounding a section of the low-voltage winding 13, 14 on different limbs 10, 11 of the core, the arrangement being such that the spacing between the two windings increases progressively from the earthed end of the highvoltage winding to the opposite end connected to the high-voltage terminal. As indicated in Fig. 8, the winding 15 which may also be used as a reactor comprises two portions in parallel, the ends being earthed, and the centre point being connected to the ends of the winding 16 which also comprises two portions in parallel connected at the centre to the high-voltage terminal 17. The spacing between the winding 16 and the corresponding lowvoltage winding 14 is greater than the spacing between the winding 15 and the corresponding lowvoltage winding 13 on account of greater voltage differences between the windings; and, to compensate for the difference in reactance between the windings on the two limbs due to the difference in spacing, the winding 16 is made of fewer turns than the winding 15. The shielding structure associated with the windings comprises conductors 20 partly encircling the winding 16 in the neighbourhood of the high-voltage connection, and conical shields 24, 26 disposed adjacent the lower potential parts of the winding 16 and the higher potential parts of the winding 15, all the elements of the shielding structure being connected to the high-voltage terminal 17. The shields 24, 26 comprise an insulating support 27, Fig. 3, overwound with a flat narrow conducting strip 28.
Patent GB-785182-A (GB)
Title: Improvements in brakes for perambulators
IPC: B62B9/08
Filed: 1956-03-08
Abstract: 785,182. Perambulator brakes. RICHARDSON, T. April 27, 1956 [March 8, 1956], No. 7254/56. Class 103 (1). A braking mechanism for a perambulator comprises a framework consisting of longitudinal bars 10 having secured thereto transverse members 11 on the ends of which are mounted the brake pads 13 for engagement with the tyres 7 and 9, the framework resting upon the top of the longitudinal main frames 1 and being prevented from lifting away therefrom by a cross-bar 22. The brake pads are held engaged with the tyres by springs 14 between the cross-bar 12 and the axle 8 and are released by drawing a T-shaped member 18, 19 towards the handle 4.
Patent GB-182068-A (GB)
Title: Improvements relating to connecting devices for fuses, blasting cartridges and the like
IPC: F42B3/00
Filed: 1922-03-13
Abstract: 182,068. Wells, F. March 13, 1922. Blasting cartridges, detonators, and fuzes. -Relates to rubber cr like elastic connecting- sleeves of the kind having a part 2 of small diameter to grip the fuze 9 or fuze wires and an enlarged part 1 to grip the cartridge 4. According to the invention, the larger part 1, after the device is moulded, is rolled upon itself, as shown in Fig. 2, and cured, whereby it can retain this position to facilitate attachment to the fuze or fuze wires, and can then be unrolled over the end of the cartridge. The edge 3 may be thickened to ensure a firm grip on the cartridge. The cartridge 4 may be stored in a rubber or like casing 11 with a cap 14, Fig. 6, which is removed and replaced bv the large part 1 of the sleeve when the fuze 9 and detonator 6 are attached. The sleeve 1 also serves to protect the detonator 6 during the insertion of the cartridge into the bore-hole if the detonator has been insertied too near the periphery of the cartridge.
Patent GB-718302-A (GB)
Title: Improvements in pipe joints
Inventor: WARREN FREDERICK WILLIAM
IPC: F16L47/16
Filed: 1952-03-21
Abstract: 718,302. Pipe joints. DUNLOP RUBBER CO., Ltd. Jan. 28, 1953 [March 21, 1952], No. 7296/52. Class 99 (1). Pipes which are normally rigid but are made of a so-called plastic material such as polyvinyl chloride, are connected by flanges 1, 2 which are secured on the pipes by a screw-threaded connection 6 which extends part-way through the flange from its joint face, the remaining portion 4 of the flange bore fitting closely on the pipe. A sealing ring 10 in a recess 9 in flange 2 is compressed by a spigot 8 on flange 1. The contiguous faces of pipe and flange are coated with a cement, and the flanges are drawn together by bolts.
Patent GB-1473821-A (GB)
Title: Tube heat exchanger
IPC: C01F7/064
Filed: 1976-02-24
Abstract: 1473821 Tubular heat exchangers VEREINIGTE ALUMINIUM-WERKE AG 24 Feb 1976 [2 April 1975] 07316/76 Heading F4S A tubular heat exchanger comprises a substantially U-shaped tube 1 conveying a first fluid in heat exchange with a second fluid flowing through another tube 2 extending through the tube 1 and consisting of a plurality of tube loops interconnected outside the tube 1 so as to form a continuous passageway for the second fluid. Preferably portions of the tube 2 cross each other either inside (e.g. at points A, B, Fig. 1) or outside (e.g. at points C, D, Fig. 2) the tube 1. The arrangement of the tube 2 may include return bends outside the tube 1 which, as shown in Fig. 3, may be enclosed within insulating material 3. Said bends may be joined by individual connections 4 (or alternatively by a common connector 5, Fig. 6) to the ends of the tube 2 projecting from the tube 1. Fig. 5 shows an arrangement comprising two of the tubes 1 placed end to end. In this case short detachable tubes are removable by means of joints 4 to enable the tube 2 to be cleaned. Water-jet cleaning means may be located within the tube 1. In use, a fluid medium such as a suspension of bauxite in sodium hydroxide passes through the tube 2 and is heated by a medium such as steam, a molten salt or a hot liquor flowing in the tube 1.