baber/WOPTO huggingface dataset:
Patent GB-313190-A (GB)
Title: Improvements in or relating to looms for weaving knotted pile fabrics
IPC: D03D39/02
Filed: 1928-02-09
Abstract: 313,190. Worth & Sons, Ltd., T. B., and Walters, F. Feb. 9, 1928. Pile-fabric looms.-The tuft-yarn ends 1 hanging from bobbins 2 are passed in the ordinary manner through the warps 13, gripped by bars 9, 10 the latter of which is carried by the lay 11, and after the bobbins have been raised to draw off the required lengths of tuft-yarns these are bent laterally over two warp threads 13 by deflectors 14, cut off by knives 17, 18, and then bent over the two warp threads as shown in Fig. 7, when the pairs of warp threads are raised. The deflectors are pivoted to their operating levers 16 and connected with a cam-controlled link 50 which prevents them from assuming too steep an angle relatively to the warp 13, and have inclined noses a which bend the tuft yarns laterally when the deflectors are moved forward. A tuft-yarn can be tied round each pair ot warp threads at one operation, or only a fraction of them. As shown in Fig. 7, they are tied around each alternate pair of warp threads, the tuft-yarn supplying mechanism and the knot tying mechanism being moved laterally to supply and tie tuft yarns on the remaining pairs of warp threads, when the whole of the tuft yarns are beaten up.
Patent GB-648352-A (GB)
Title: Improvements in or relating to the mining or winning of coal or other material
IPC: E21C35/12
Filed: 1948-02-12
Abstract: 648,352. Mining-machines. HUWOOD MINING MACHINERY, Ltd., and BAINBRIDGE, F. Feb. 12, 1948, Nos. 4137 and 4138. [Class 68 (i)] In mineral mining, a plough, which may be of the type disclosed in Specification 648,351, is supported on the sides of a conveyer structure in such a manner that the plough is prevented from rising away from, and from partaking of lateral movement with respect to, the conveyer structure 3 during movement of the plough along the face. To accomplish this, the plough has a bridge-like form which straddles and engages the conveyer by wheels on the legs of the bridge portion, the sides of which conveyer are formed of laterally outwardly directed channel-section members 24. The vertical wheels 17 engage the flanges of the channel-sections to prevent the plough from rising during travel, and the horizontal wheels 18, which are arranged at the corners of a triangle or truncated triangle having its apex on the face side of the conveyer, engage the bottom of 'the channel of such members 24 to prevent lateral movement of the plough. Specification 648,353 also is referred to.
Patent GB-541544-A (GB)
Title: Improvements in or relating to refractory castings for glass making and other apparatus
IPC: C04B35/44
Filed: 1941-03-27
Abstract: 541,544. Refractory substances for glassmelting apparatus &c. HADDAN R. (Corning Glass Works]. March 27, 1941, No. 4147. [Class 22] A cast refractory for glass-melting apparatus &c. contains over 15 per cent. of an iron oxide, up to 50 per cent. of alumina, some chromic oxide, e.g. commercial chrome green oxide, and is substantially free of magnesia and silica. Specification 545,949 is referred to.
Patent GB-444862-A (GB)
Title: Improvements in or relating to rotary furnaces
IPC: F27B7/28
Filed: 1934-06-22
Abstract: The lining of a rotary furnace, on which the charge forms a protective crust, is made of material having a porosity throughout its mass of at least 35 per cent.  The lining may be constructed of pre-burnt bricks, or a plastic mass or formed shapes containing combustible or volatile substances may be burnt in situ.  The refractory material may be alumina, magnesite, chromite or chamotte, and provided that the material is sufficiently strong it may have a porosity up to 80 per cent.  Specifications 281,254, [Class 70], and 444,878, are referred to.
Patent GB-401673-A (GB)
Title: Improvements in resistance coupled thermionic amplifiers
IPC: H03F1/50
Filed: 1932-02-12
Abstract: 401,673. Valve amplifying circuits. DUBILIER CONDENSER CO. (1925), Ltd., Victoria Road, North Acton, London. -(Assignees of Nyman, A. ; Genehurst Apartments, Dobbs Ferry, New York, U.S.A.) Feb. 12, 1932, No. 4217. Convention date, Feb. 12, 1931. [Class 40 (v).] In a direct-coupled thermionic amplifier, in which resistances are inserted between the negative supply lead and the cathodes of the valves and are so chosen that the potential difference between the grid and cathode of the second valve remains substantially constant in spite of small variations in the supply potential, condensers are associated with the feed resistances, so that these potential differences may be made equal'in phase as well as in magnitude. Fig. 1 shows a screen-grid valve 1 having two resistances R1, R2 in the cathode side of the anode circuit, from the common point 10 of which direct connection is made to the grid of a power amplifier 2. As the grid of valve 2 will be positive with respect to the negative supply lead 4 by an amount equal to the voltage drop across R1 (which for optimum coupling should equal the drop across the valve 1), the voltage drop in R3 should equal this amount plus the requisite grid bias for valve 2. The screen grid voltage for valve 1 is derived from G on potentiometer R4 and the input is applied to the control grid and tapping 7 on resistance R2 to provide control grid bias. The connection H from the cathode through C2 compensates for hum introduced by the screen-grid tapping G. Resistance R2 is shunted by condenser C1 to ensure that maximum signal voltage developed across R1 is transferred to the next stage. In order that no hum from the supply mains shall reach the output of valve 2 it is necessary that the points 10 and 12 shall divide the total impedances of their respective circuits 5-4, 3-4 in the same ratio, this being effected by shunting R3 by a variable condenser C4. The potentiometer R4 may be dispensed with, in which case the screengrid voltage is taken from the anode supply through a voltage-dropping resistance and hum is prevented in this stage by a condenser between lead 4 and a variable tapping on the coupling resistance R1, Fig. 2 (not shown). The invention may also be used with indirectly heated valves having a separate heater circuit for each valve, Fig. 3 (not shown). Specification 398,826 is referred to.
Patent GB-545743-A (GB)
Title: Improvements in and connected with socket couplings, switch sockets and similar electrical accessories
IPC: H01R13/453
Filed: 1941-03-31
Abstract: 545,743. Two-part couplings. CRABTREE & CO., Ltd, J. A., McLOUGHLIN, H. F., and MORGAN, R. W. March 31, 1941, No. 4282. [Class 38 (i)] A rotary shutter a that normally covers the sockets e is locked in the closed position by studs g entering recesses in the cover of the fitting, the spring j serving both to turn the shutter by engagement with flats l on the spindle and to lift the shutter into the locking position. If the plug member is correctly inserted the pins engage oblique surfaces d on the shutter and after depressing it to withdraw the studs g from the recesses, turn it to expose the sockets e. If only one wing of the shutter is depressed the shutter tilts, allowing the stud g on the other wing to maintain locking engagement.
Patent GB-1450731-A (GB)
Title: Piece goods extraction apparatus
IPC: D06B15/04
Filed: 1974-01-30
Abstract: 1450731 Drying webs GASTON COUNTY DYEING MACHINE CO 30 Jan 1974 [22 Feb 1973 6 Aug 1973] 4293/74 Heading F4G The invention relates to an apparatus for drying a web W of material. The apparatus comprises a suction slot 210, means for passing the web W over the suction slot 210 with the slot extending in use transversely of one face of the web W, a pressure slot 220 aligned with the suction slot 210 and adjacent in use the other face of the web, means, e.g. a blower 224, for impressing suction at the suction slot, and, e.g. a blower 230, for delivering air under pressure through the pressure slot. As shown the suction slot 210 forms part of a suction chamber 212 which is mounted non-rotatably within a honeycomb roll 214 driven by a motor 216. A further suction chamber-roll combination 212<SP>1</SP>, 214<SP>1</SP> is also provided. Drying gas may be circulated through the pressure slot 220 to the suction slot and thence back to the pressure slot by a single blower. The roll 214 comprises a plurality of annular members 14 which interfit and are held together by a plurality of tie rods 22 passing through aligned bores 44 in the members 14 and being tensioned by a spring 26. Each annular member 14 has a base portion 40 and radially extending partition portions 42 which has as thin a radially outer edge as mechanically possible considering the load to be carried and the constructional stability of the roll, the free radially extending edge of each partition portion being provided with a rib 50 and an edge portion 54 for co-operation with complementary formations on an adjacent base portion 40. The plurality of connected annular members 14 are mounted by means of end flanges 18 on mounting flanges 28 one of which is secured to a sprocket member 32. The roll rotates on bearings 34 which are connected by spider arrangements to a member 36 communicating with the suction slot. The annular members 14 may be of plastics material and the tie rods stainless steel wire. The annular members may be glued or fused together or form a snap fitting one with another.
Patent GB-1150025-A (GB)
Title: Improvements in can filling apparatus
IPC: B67C3/20
Filed: 1967-01-30
Abstract: 1,150,025. Can-filling machines. F.M.C. (AUSTRALIA) Ltd. 30 Jan., 1967 [28 Jan., 1966], No. 4428/67. Headings B8C and B8T. A can filling machine, for use with liquids or fluent solids, comprises a filling head 3 with a measuring cylinder 7 into which a piston 41 draws filling material, the cylinder 7 being angularly movable to align ports at its base so that the piston may expel the material into a waiting can. A central storage vessel 2 has a plurality of filling heads 3 arranged peripherally about it, the whole assembly being rotatable about the central vertical axis of the vessel 2. Each cylinder 7 is rotatable in a housing 4 and has inlet parts 10 in its wall able to register with a supply passage 5 and an aperture 6. The base plate 8 of the cylinder 7 has outlet ports (11), Fig. 3 (not shown), which can be aligned with a hole 24 in a fixed bottom plate 13 of the housing 4 to allow discharge of material into a can 12. The upper end 25 of the cylinder 7 has a sleeve 28 provided with striker arms 29, 30 engageable with a pair of rollers 31, 32 fixed to the frame of the machine, to cause rotation of the cylinder 7 by approximately 90 degrees when the cylinder 7 passes the position of each roller 31, 32 during rotation of the assembly. The piston 41 has a rod 53 which is slidable in a bearing 54 and an arm 57 with a roller 61which operates in a cam track 62 extending around the machine and shaped to raise and lower the piston 41 at appropriate points during the rotation of the assembly. In operation, a sensing device (not shown) actuates a fluid pressure mechanism 46, lowering the roller 31 into the path of the striker arm 30, only if an empty can 12 is present. Material then is drawn into the cylinder 7 by the piston 41 with the outlet ports 11 closed; the inlet port 10 is then closed and material is ejected into the can 12 by opening one of the ports 11 and lowering the piston 41. After the refilling of the cylinder 7, the filled can is removed and an empty can 12 is placed beneath the head 3. Ejection of material does not take place if no can is present since the roller 31 is not in position to be contacted by the striker 29; the material is returned to the vessel 2 by the piston 41, and the cylinder 7 is not rotated since the strikers 30 remain out of contact with the roller 32. In a modification, Figs. 9-14 (not shown), for use with liquids only, the inlet parts for the cylinder 7 are in the base plate 8 instead of in the cylinder wall. Further modifications incorporate different numbers of ports, and, in particular, the cylinder may have a common passage for inflow and discharge. The filling head as described may be used, with suitable modifications, in a "straight-line" machine. The cylinder 7 may be rotated alternately in opposite directions.
Patent GB-416482-A (GB)
Title: Improvements relating to the examination of objects by means of x-rays
IPC: G21K1/02
Filed: 1933-02-13
Abstract: 416,482. R÷ntgen-ray apparatus. LANGE, F., and BRASCH, A., 4, Clausewitzstrasse, Charlottenburg, Berlin. Feb. 13, 1933, No. 4438. Convention date, Feb. 13, 1932. [Class 98 (i).] An arrangement for visual or photographic examination of layers of considerable thickness or of high atomic weight, e.g. large cast iron or cast steel objects, comprises an X-ray tube operatized under a voltage of at least 500,000 volts whereby the Compton wave-length displacement is of such magnitude that scattered radiation may be separated from the direct radiation by simple filtering. Fig. 1 shows an arrangement wherein the object 2 is radiated from the anti-cathode 1 of an X-ray tube in which the high voltage is produced by shock ionization. A lead filter 3 is interposed between the body 2 and the projection screen or photographic film 4 if the body is not of sufficient thickness to act as a filter. Fig. 2 shows another arrangement in which the body 2 is of sufficient thickness to act as a filter, but, to prevent edge blurring, lateral cover members 5, 6 are provided ; or a grooved filter 3, similar to a Bucky grid, is arranged between the body 2 and anti-cathode 1
Patent GB-524948-A (GB)
Title: Improvements in or relating to chairs
IPC: A47C3/04
Filed: 1939-02-10
Abstract: 524,948. Nesting chairs. POLLIT, P., and PRIMOBENTWOOD FURNITURE CO., Ltd. Feb. 10, 1939, No. 4473. [Class 52 (ii)] A stackable chair of the kind in which the front legs 3, 4 project beyond the contour of the seat has the front corners well rounded for example with a radius about three or four inches. The back corners may also be rounded and the back legs 5, 6 may be arranged outside the contour of the chair and defined within the width of the seat at the back and are splayed rearwardly and laterally, the cross bar 7 forming the top of the back being curved rearwardly. The chairs may be stacked spiral fashion with the rear legs on one side threaded through the backs of the chairs below.
Patent GB-688795-A (GB)
Title: Improvements in and relating to endless track vehicles
IPC: E02F9/02
Filed: 1951-02-23
Abstract: 688,795. Bulldozers. ACIERIES DU NORD. Feb. 23, 1951 [Feb. 27, 1950], No. 4485/51. Class 68(i) [Also in Group XXXI] An endless-track bulldozer comprises a track driving engine mounted within a resiliently deformable shell and a rigid reinforcing member which surrounds the rear part of the shell and extends forwardly to near the centre of gravity of the vehicle, the rigid member supporting the endless tracks and a dozer blade at its forward end. The rear part of the shell 1, Figs. 2 and 3, in the form of a tunnel of sheet metal, supports the engine main clutch and gear box and is surroudned at its rear part by the reinforcing member 5. The forward ends of the member 5 are provided with bearings 7, to support the endless track suspension means, and yoke members 8 to support a U-shaped lever 9 carrying the dozer blade 10. The member 5 also has a pair of wide openings 6 through which passes the drive transmission to the endless tracks. The engine frame normally has its bearing flanges resting on, and bolted to, angle irons 4, Fig. 12, fitted to the inside of the shell but if the bolts 35 are rotated to cause the bell-crank levers 33 to rock about pins 34, the rollers 31 mounted on the other ends of the levers 33 lift the bearing flanges (with the retaining bolts removed) from the angles 4 so that the engine frame may be slid from the shell with rollers 31 on the angles 4. The main clutch shaft from the engine is connected to the gear box through a flexible coupling.
Patent GB-268738-A (GB)
Title: Improvements in process for the electrolytic production of metals and in particular of magnesium
IPC: C25C3/04
Filed: 1927-02-17
Abstract: 268,738. Jessup, A. C. March 30, 1926, [Convention date]. Void [Published under Sect. 91 of the Acts]. Electrolytic furnaces.-Metals are obtained by electrodeposition from a molten electrolyte into a molten metal acting as cathode, the molten alloy thereafter acting as anode in a secondary compartment of the cell whereby pure metal is deposited at the cathode of this compartment. In the apparatus shown in Fig. 1, the primary electrolysis takes place between anodes 3 of graphite or hard carbon and a layer of molten metal at the bottom of the cell; secondary electrolysis takes place between this layer and a cathode enclosed within a refractory container 2. The pure metal e.g. magnesium forms a layer above the electrolyte; this may be covered with a protective layer of relatively light chlorides. A certain amount of direct electrolysis may take place between the final cathode and the anodes 3 without harmful effects. In a modification, the container 2 extends to the molten metal. Different electrolytes may in this case be employed within and without the container e.g. a fluoride bath containing a magnesium oxy-compound in the primary cell and a chloride in the secondary cell. In a modification the cathode is maintained between the wall of the cell and a partition 4, Fig. 3. A backing 5 of solidified electrolyte may be formed on the partition 4 by means of a cooling coil 6. A similar backing may be produced on the cell wall by a coil 8. Means for circulating the molten alloy may be provided. Either portion of the cell may be shunted so as to prevent progressive enriching or impoverishment of the intermediate alloy. Specifications 256,610 and 259,554 are referred to.
Patent GB-137160-A (GB)
Title: An improvement relating to nails brads and screws
IPC: F16B15/02
Filed: 1919-02-24
Abstract: 137,160. Glascodine, N. E. Feb. 24, 1919. Nails; wood-screms.-The head of a nail, brad, or screw is formed with a recess to contain a radium compound or other luminous material so as to indicate the positions of shelves, walls, switches, key-holes, &c. The material may be enclosed in glass and inserted in a recess in the rail etc.; or, as shown in Fig. 4, the material b may be placed in the recess a and left uncovered or covered by glass c either flat or of lens form. In order to prevent damage to the material in inserting the screw &c., marginal notches d may be provided to receive the claws e, Fig. 6, of a driver; in the case of a nail, a punch is employed having a shouldered recess g, Fig. 8, to receive the nail head.
Patent GB-1017576-A (GB)
Title: Method of and apparatus for coating webs
Inventor: STERN MFRED
IPC: B05D1/04
Filed: 1962-02-06
Abstract: In a method of coating a web 22 a liquid coating composition e.g. from a trough 28 is caused to flow down an inclined plane 25 to a sharp edge at the lower end thereof, said liquid being dammed back by an adjustable retainer blade 32 and released in a controlled manner. The web is passed over a counter-electrode e.g. roller 18 spaced from the sharp edge and the composition is atomised at the sharp edge and deposited on the web by means of a high potential difference (40-75 kv.) maintained between the edge and the counter-electrode.
Patent GB-592516-A (GB)
Title: Improvements in or relating to flashlight photography
IPC: G03B15/04
Filed: 1945-02-23
Abstract: 592,516. Photographic cameras combined with flashlights. MASON & SONS, Ltd., E. N., and GOLDRING, E. A. H. Feb. 23, 1945, No. 4656. [Class 98 (i)] In apparatus for operating synchronously by means of a single switch a flash-lamp and a photographic shutter, the latter being controlled by a solenoid across which the lamp is shunted and by an adjustable resistance provided between a source of current and the solenoid to delay the shutter actuation until the peak of the flash is reached, the solenoid controls a trigger normally holding a spring-actuated piston which when the trigger is released moves against the action of an adjustable dashpot to operate the shutter and simultaneously breaks the circuit to both solenoid and flash bulb, preventing a second firing of flash bulb until the bulb has been replaced and the trigger reset. As shown, an electromagnet consisting of an iron-cored solenoid 1, has a part of the core, which is slidable within the solenoid, pivotally attached to a trigger 19, which is hinged in a bracket 20 fastened to the iron frame 2 and is depressed by a spring blade into engagement with a plunger 22 operating a shutter release system. The extension 22 which is attached to a piston 23 outwardly urged by a spring 25 is controlled by a dashpot device containing an air inlet 28 to the cylinder 24 adjustable by a needle valve 27, and is held against the trigger 19 so that the projection 45 touches a spring contact 10 in the " unexposed " position. The solenoid 1 is connected in series with a variable resistance 8 across a flash bulb 161 by leads 16, 17 and to a source of current 5 by leads 3, 4 and by lead 9 via spring contact 10, extension 22, piston 23, spring 25, cylinder 24 and a firing switch 15. A switch 43 is provided so that the bulb may be connected as at 42 across a part only of the solenoid 1. On closing switch 15, the flash bulb heats up causing a rise in the solenoid current until the core is attracted into the solenoid, releasing extension 22 thus operating the shutter and breaking the circuit between spring 10 and projection 45. Before a second exposure can be made, the extension 22 provided with a thumb piece (not shown) must be pressed to return the piston 23 into the cylinder until the extension has passed to the right of the trigger 19 making the circuit again through spring contact 10 and projection 45. Both switch 15 and flash bulb 16<1> may be arranged at a distance from the main unit.
Patent GB-135720-A (GB)
Title: Process of Recovering Potassium Compounds.
Inventor: FAIRBROTHER HENRY
IPC: C01D17/00
Filed: 1919-02-24
Abstract: 135,720. Fairbrother, H., (Chemical Construction Co.). Feb. 24, 1919. Potassium salts.-Hot gases such as cementkiln gases, which contain potassium compounds and insoluble matter, are washed first in an apparatus which collects the insoluble matter and part of the potassium compounds in a liquid, and then in another apparatus in which the remaining potassium compounds are collected as a clear solution. The slurry produced in the first washer is treated for recovering the potassium salts. The second washer may be supplied with an acid, such as sulphuric, nitric, hydrochloric, or boric acid, to obtain the corresponding salts. The apparatus employed consists of two sets of towers 11, 13 and 16, 18 having a pump 15 between them and having separate liquid circulations, though all the towers are in series to the gases. The liquid for the towers 11, 13 is circulated by a pump 21 and is drawn off to a filter-press 36, while that for the towers 16, 18 is circulated by a pump 28 and is drawn off at 39.
Patent GB-470417-A (GB)
Title: Improvements in or relating to the treatment of gases containing hydrochloric acid
IPC: C01B7/00
Filed: 1936-02-14
Abstract: Sulphur dioxide is removed from gases containing hydrochloric acid by contacting the gases in the presence of oxygen with an aqueous solution of hydrochloric acid and a soluble calcium salt, preferably calcium chloride, having calcium sulphate suspended therein. Preferably, the hydrochloric acid has a concentration which is in equilibrium with the gas being treated.  The solution may be continuously circulated through a tower in which it is contacted with the gas, preferably through a settling tank whereby the amount of suspended matter in the circulating liquid is maintained constant. The gas and liquor may flow in counter-current or co-current through packed or unpacked towers.