baber/WOPTO huggingface dataset:
Patent GB-255344-A (GB)
Title: Improvements relating to purifying blast furnace gases
IPC: B03C3/019
Filed: 1926-02-01
Abstract: 255,344. Mathesius, W., and Mathesius, H. Feb. 1, 1926. Washing processes. - Blast-furnace gas is treated electrically to separate a part of the dust, the remainder of which is then removed by wet purification, a fog being produced in the gas for this purpose. Coarse particles may be removed in the electric precipitator, which may be of small dimensions, the finer fume particles produced by sublimation or chemical action being then precipitated by means of the fog. The fog may be produced in the gas either by cooling it or by means of water finely sprayed within two large chambers ,successively traversed by the gas. In the first chamber the water used is at about 35‹ C., while in the second it is as cold as possible. Any fog not deposited in the chamber is removed by centrifugal action within a Theisen washer or fan. The gas may traverse dust pockets before electric treatment.
Patent GB-744246-A (GB)
Title: Improvements in and relating to silicone rubber
Filed: 1953-02-03
Abstract: A silicone rubber is made by curing a composition comprising (1) an alkaline condensed benzene-soluble diorganosiloxane convertible to the solid elastic state in which the structural units are R2SiO where each R is a lower alkyl or aryl radical and in which siloxane at least 75 per cent of the R radicals are lower alkyl, and (2) between 0.1 and 10 per cent by weight of the siloxane of finely divided carbon.  The siloxanes employed are the condensation products of lower molecular weight diorganopolysiloxanes, e.g. octamethylcyclotetrasiloxane, a mixture of 90 mol. per cent of the tetramer with hexaphenylcyclotrisiloxane, octaphenylcyclotetrasiloxane, and tetramethyltetraphenylcyclotetrasiloxane, with alkaline condensing agents, e.g. sodium, potassium and lithium hydroxides, potassium amide, alkali metal salts of triorganosilanols, potassium acetonyl acetone, potassium metal, benzyltrimethyl ammonium hydroxide and benzyltrimethyl ammonium butoxide, in amount, e.g. of 0.001 to 2 per cent by weight of the siloxane, i.e. 1 alkali metal atom per 50 to 10,000 Si atoms.  The carbons specified are gas black, thermal carbons, furnace blacks, bone black, channel black, acetylene black and graphite.  The carbons used preferably have a specific area of 20 to 300 sq. metres/gram. Best results obtain by mixing the carbon with a portion of the uncured siloxane and ageing, e.g. at room temperature for 12 to 16 hours or by hot milling at 110 to 125 DEG C. for 10 to 15 minutes, and then adding this mixture to the remainder of the siloxane. Benzoyl peroxide is the preferred curing catalyst and is used in amount of 1 to 6 per cent by weight of the siloxane.  Fillers that may be added are lithopone, calcium carbonate, titania, talc, zinc oxide, silica aerogels, fumed silica, modified diatomaceous earths, ferric oxide, zinc borate and bismuth oxide, e.g. in amount of 5 to 200 per cent by weight of the siloxane. The compositions may be moulded, e.g. at 110 DEG  to 150 DEG C. and at 250 to 1000 p.s.i. and thereafter cured at 200 DEG  to 250 DEG  C. Examples are given.  The products find use as insulation materials for electrical conductors, gasket materials and as shock absorbers. Specification 19536/48, as open to inspection, is referred to.
Patent GB-911079-A (GB)
Title: Improvements relating to roof support bars for mines
IPC: E21D17/086
Filed: 1960-01-28
Abstract: 911,079. Mine roof support bars. GUTEHOFFNUNGSHUTTE STERKRADE A.G. Jan. 28, 1960 [Jan. 28, 1959], No. 3154/60. Class 20 (2). A support bar for mines having a hearing eye 3 at one end and a pivot pin 5 at the other end whereby it may be pivoted to a like bar by pushing the bearing eye from the side into the pivot pin of the other bar is characterized in that said bar is provided with a worm gear segment 7 at one end and a rotatable worm 8 at the other end to permit angular adjustment of one bar relative to another, interengagement of the teeth being effected by a cross member 6 having a cam surface 6<SP>1</SP>. The worm 8 is provided with hexagonal holes 9 for co-operation with a wrench and the bearing eye 3 constitutes an elongated hole defining together with a slot in the pin 5 guide means for said member 6.
Patent GB-600262-A (GB)
Title: Improvements in or relating to electric pulse modulation systems of communication
IPC: H03K7/04
Filed: 1945-02-07
Abstract: 600,262. Pulse modulation. STANDARD TELEPHONES & CABLES, Ltd. Feb. 7, 1945, No. 3163. Convention date, May 24, 1943. [Class 40 (v)] A received train of pulses modulated in recurrence frequency is converted into an equivalent train of time-modulated pulses before demodulation. This is accomplished by the provision of a pulse generator, the normal pulse period of which is less than the minimum recurrence period of the received pulses, but greater than half the maximum recurrence period. Each received pulse is arranged to synchronize the generator by shifting alternate generated pulses into coincidence therewith. As shown, the locally generated pulses L, curve a, having a normal recurrence period T are each capable, during a preceding time interval S, of being brought into coincidence with a received pulse applied to the generator. If the instantaneous recurrence interval of the incoming signals B1, B2, B3, curve b, is f1, the resultant pulse output is BL1, L1, BL2, L2, &c., curve c, which occurs as follows. Received pulse B1, appears as BL1 after synchronizing the generator ; after a period T, the generator then produces L1 ; the second received pulse synchronizes the third generated pulse to produce BL2 after a period t1, related to f1, and so on. Curves e and h show the pulse outputs for received signal pulses, curves d and g having other instantaneous recurrence frequencies, with intervals f2 and f3 respectively. The resulting spacings corresponding to t1 of curve c become t2 and t3 respectively indicating conversion of the recurrence frequency-modulated pulse train into an equivalent time-modulated train, which can be demodulated as described in Specification 600,291. Specifications 600,255 and 600,299 also are referred to.
Patent GB-265610-A (GB)
Title: Improvements in and relating to internal combustion engines
IPC: F02B75/02
Filed: 1927-02-04
Abstract: 265,610. Felies, J. F. Feb. 6, 1926, [Convention date]. Void [Published under Sect. 91 of the Acts]. Two- and four-stroke-cycle engines. - The Figure shows a double-acting four-stroke compound engine in which the passages 3 between the two cylinders are controlled by valves 5 which are connected to balancing-pistons 6. The passage 3 is made very large, and to allow for this enlargement of the combustion chamber witheut reducing the pressure therein at the end of the compression stroke of the high-pressure piston, the air admitted at the commencement of the pressure stroke is in excess of atmospheric. The amount of fuel injected is also increased to at least 1 1/2 times the normal amount. The pistons 6 are fitted with guiding-baffles 9. The valve 5 may also serve to exhaust the low-pressure cylinder either to the atmosphere or to a third expansion cylinder. The invention may also be applied to two-stroke compound engines. With four-stroke engines, two high-pressure cylinders may discharge into one low-pressure cylinder; or in the case where only one high-pressure cylinder is used, the low-pressure piston may. during its idle stroke, draw in fresh air for cooling purposes. Further, the low-pressure piston may be connected to two cranks, when the pressure thereon is excessive.
Patent GB-699002-A (GB)
Title: Improvements relating to suction-operated fittings
IPC: B60J3/02
Filed: 1952-02-07
Abstract: 699,002. Pneumatic sucker fastenings. PUCKERT, E. W. Feb. 7, 1952, No. 3312/52. Class 44 In means for adjustably attaching an article to a suction device comprising a casing C and a diaphragm D mounted therein, the diaphragm D being operated by an actuating member N, the casing is provided with a bracket arm 1 forming one part of a hinge, the other part being integra with or attached to the article to be supported anc so arranged that the opera tion of moving the actu ating member will lock or release the hinge fitting. In the arrangement shown as applied to the mounting of an anti-dazzle screen, a hinge pin 4 is located;in sockets 8 formed by a supporting strap 6 and is retained in position by a bracket arm 10 mounted on a stud S for the member N. A projection on the arm 10 is located in a punched hole 14 forming a fulcrum 12 on the arm 1. The member N may be in the form of a spring-loaded pin. The head of the stud S embedded in the diaphragm D is preferably formed with a flange and projecting tongues, the latter being formed by a pressing operation. The material of the diaphragm may be P.V.C.
Patent GB-451585-A (GB)
Title: Improvements in or relating to magnetic separators
IPC: B03C1/22
Filed: 1935-02-02
Abstract: 451,585. Magnetic separators. THOMPSON, H. H., and DAVIES, A. E., Magnet Works, Lombard Street, Birmingham. Feb. 2, 1935, No. 3414. Divided out of 451,581. [Class 72] Materials to be treated are fed on to a feed belt q running over pulleys r, s and also over the pole of an electromagnet t, the pole extending lengthwise of the belt, and the magnetic particles are pecked by a belt v travelling parallel to, or at a small angle to and in the same direction as, the belt q and between the latter and an armature or an electromagnet. The lower face of the armature or electromagnet u is extended and curved as at w, the belt v following this curve as shown. The magnetic particles drop onto a transverse belt x and are carried off by it or into a shoot. The pulleys on which the belts travel may bo mounted so that the spacing of the belt v from the belt q may be varied and the poles of the magnet t may be set at an angle to the belt. The armature u may be replaced by an electromagnet and then the magnet t may be replaced by an armature.
Patent GB-1343742-A (GB)
Title: Road transport vehicle
IPC: B60G21/00
Filed: 1972-01-25
Abstract: 1343742 Road vehicle suspensions VAN DOORNES BEDRIJFSWAGENFABRIEK DAF BV 25 Jan 1972 [28 Jan 1971] 3444/72 Heading B7D In a road vehicle suspension system the total axle load on an axle or on two independently suspended wheels situated in a single transverse plane is applied through two separate spring assemblies, each spring assembly comprising a pair of spaced springs having vibration damping means associated therewith, and each spring assembly supporting a mass constituted by a part of the vehicle and amounting to at least one quarter of the total axle load, the masses being movable in relation to one another and in relation to the axle. In Fig. 1, a semi-trailer tractor has a driving cab 1 mounted on a cab frame 2 which also carries the engine 3 and steering gear 4 and is supported on front and rear axles 6, 8 by springs 5, 7. A load frame 11 carrying a fifth-wheel coupling 12 for a semitrailer 13 is supported on the axles 6, 8 by springs 9, 10. In Fig.4, the cab 1 has its centre of gravity Z over the front axle 8 on which it is supported by helical springs 7, and the load frame 11 is supported on the axles 6, 8 by leaf springs 21, 22. A beam 15 extending rearwardly from the cab carries a bellcrank lever 18 which is connected to the rear axle 6 and is linked through a spring 20 and rod 19 to a second bellcrank lever 14 connected to the front axle to control pitching of the cab. In a modification the bellcrank linkage is replaced by a system of levers and torsion bars. In Fig. 5, the cab frame is supported at the front by springs 7 on the front axle 8 and at the rear by springs 30 on levers 31 fixed to torsion bars 24, 25 which have at their other ends levers 32 connected to the rear axle and are rotatably mounted in a load frame 11 supported on the axles by springs 8, 10.
Patent GB-590712-A (GB)
Title: Improvements relating to pressure-responsive valves
IPC: F16K15/02
Filed: 1945-02-12
Abstract: 590,712. Valves. ELECTROL, Inc. Feb. 12, 1945, No. 3496. Convention date, April 14, 1944. [Class 135] A check valve comprises a polygonal-shaped, plate closure member 17, Fig. 1, having upstanding peripheral lugs 18, Fig. 2, and loosely mounted in the bore 12 of a casing 10 having an extension. 11 of smaller diameter. The face 14 of the casing is formed with an annular groove 15 for a seal ring 16 of, e.g. rubber or synthetic rubber, towards which the closure member is urged by a spring 19 held in the casing by a plate 20 and a split snap ring 22. The casing is secured to the wall 26 of a conduit by deforming a rubber ring 25 between the extension 11, the wall 26 and a connector ring 24 held in position by a snap ring 27. In a modification in which the direction of opening of the valve is reversed, a seat member 40, Fig. 3, rests on a shoulder 37 in the casing and a rubber ring 36 ensures fluid-tightness between the seat member and the casing wall. A spring 48 and a retaining ring 49 may be inserted between the connector and snap rings securing the valve casing to the conduit wall. In a further modification in which the valve is double-acting a polygonal-shaped seat member 59, Fig. 5, having annular grooves 61, 62 for rubber rings 63, 64 respectively is urged by a spring 65 towards the face 58 of the casing and another spring 72 urges the valve member 70 into contact with the ring 64.
Patent GB-537753-A (GB)
Title: Improvements in change speed gear of the universally variable type
IPC: F16H3/76
Filed: 1940-02-26
Abstract: 537,753. Variable-speed gearing. LEVERICK, F. Feb. 26, 1940, No. 3522. [Class 80 (ii)] In a change-speed gear, of continuously variable type, a driving toothed wheel D meshes constantly with a driven toothed wheel E, the change of gear ratio being effected by varying the centre about which the wheel D revolves. As shown, the wheel D is part of a casing Having diametrical guides C engaged by a slider B on the end of the driving shaft A. The position of the slider B in the guides C may be varied by screw-andnut gearing or other means. A driven planetary pinion E fixed on a spindle e' gears with a wheel G pivoted on a rod f co-axial with the axis of the casing D. The spindle e<1> is carried by a spider F free on the hub g of the wheel G and having internal teeth f' meshing with the teeth m of a compound gear K, M, pivoted on a plate V. The latter is held fixed in space. Gear K meshes an idler J gearing with a wheel H fixed to the wheel G. A driven shaft N, coaxial with the driving shaft A is connected with the spindle e' by a telescopic shaft n and a pair of universal joints. The wheels D, E, are equal in size to the wheels F, M, respectively, and the gear ratio of the train E to G is the same as the gear ratio of the train M, K, J, H. In operation, rotation of the shaft A produces uniform rotation of the shaft N. The speed' is varied by sliding the casing D along the slider B in a radial direction. When the position of the slider is radially beyond the pitch circle of the teeth d of the casing D reverse rotation is given to the shaft N. The plate V may be held fixed by the means shown in Figs. 5 and 6. In this case the plate V is fixed to the spindle f which is free in a bearing d<1> on the casing D. The spindle f carries a plate 10 having a rod 11 jointed to two parallel rods 12, 12, of a parallel motion device. In this case the drive is preferably taken from a toothed wheel 15 carried by the plate 10 and meshing with a wheel 14 on the wheel G.
Patent GB-535201-A (GB)
Title: Improvements in mobile apparatus for picking up and conveying granular or powdered material
IPC: B65G53/08
Filed: 1940-02-28
Abstract: 535,201. Conveyers. EUROPEESCHE FULLER VERVOERMAATSCHAPPIJ N.V. Feb, 28, 1940, No. 3728. Convention date, March 3. 1939. [Class 78 (i)] In mobile apparatus for picking up and conveying pulverulent material of the kind in which a wheeled structure carries a worm conveyer provided with a rotary feeding disc, the conveyer delivering to a pneumatic conveyer connected to the ultimate delivery point,the motor driving the worm is out of line with the latter so that either motor or worm can be removed for repair without removal of the other. Fig. 1 shows the rotary feeding disc 11 driven from the motor 12 through the carden shaft 16, the worm 1 driven from the same motor through the belt gear 15 and a pressure supply pipe 19 delivering through the nozzles 20 to blow the material delivered by the worm through the outlet 22. To remove the worm, the casing 23 of the belt gear and the disc 11 are removed and then the nut 21 removed from the end of the worm shaft. The worm can then be drawn forward through the opening 10. In a modified construction the worm, sleeve 2 and bearings 4 are drawn out of the other end of the casing as a unit thus obviating removal of the disc 11.
Patent GB-989010-A (GB)
Title: Magneto-resistance non-reciprocal signal amplifier
IPC: H03F15/00
Filed: 1962-01-31
Abstract: 989,010. Magneto-resistive devices. RADIO CORPORATION OF AMERICA. Jan. 31,1962 [Feb. 27, 1961], No. 3729/62. Heading H1K. [Also in Division H3] To increase the gain of a magnetoresistive amplifier, in which current between one pair of electrodes on a semi-conductor body is modulated by a magnetic field in accordance with an input signal, a second pair of electrodes is arranged on the body orthogonally with respect to the other pair of electrodes and the magnetic field and is connected to an independent source of D.C. As shown in Figs. 1 and 2 ohmically connected end electrodes 19 and 20, 29 and 30, and 34 and 35, of three semi-conductor bodies 10, 28 and 33, are connected in series with a D.C. source 58 bridged by capacitor 59. Ohmically connected side electrodes 21 and 22, 31 and 32, and 36 and 37 are connected in series with a D.C. source 49 bridged by capacitor 50. A permanent magnetic field is provided normal to the plane of Fig. 1 for each of the semi-conductor bodies and these fields are modulated by signal current in conductors 24, 25, 64, 65. Signals are supplied to the conductors by way of transformer 71, 72 and tuning capacitor 70. Output signals, derived from the modulated magneto-resistance of the series connected elements, are extracted by winding 52 of a transformer having a timed output winding 53. A negative feed-back is provided by a winding 48 which injects the output signal into the series connection of side electrodes. As shown in Fig. 3, the conductors such as 24, 25, carrying the signal current, may be provided as a double wound helix 76, 77 on a tubular former 78. The semi-conductor bodies 10, 28, 33 are arranged between adjacent turns of the helix so that each turn contributes flux of the same polarity to each body. Since alternate bodies will experience a relative reverse of flux polarity the permanent magnetic fields are similarly reversed by the provision of permanent magnets 85 to 88 placed end to end so as to have the consequent pole structure illustrated. More than one chain of semiconductor bodies may be arranged on the former as shown by the bodies 80, 81 and 82 with associated magnets 89 to 92. The extra chains may provide further stages in cascade or be separate amplifiers. Instead of providing the signal conductors as a double helix they may be arranged as alternate clockwise and anti-clockwise turns, see Fig. 7, not shown. With very high frequencies the signal is applied to a stack as shown in Fig. 8. Germanium and indium antimonide are mentioned as materials exhibiting the magneto-resistive effect.
Patent GB-903052-A (GB)
Title: Process for producing l-glutamic acid by fermentation
Inventor: TSUNODA TOSHINAO
IPC: C12P13/14
Filed: 1959-02-03
Abstract: 1-Glutamic acid is prepared by adding one of a given set of micro-organisms (see below) in spore form to a nutrient medium containing as principal components a crude saccharide as carbon source and a nitrogen compound in excess of the nitrogen growth requirement of the micro-organism as nitrogen source, cultivating the micro-organism aerobically and recovering 1-glutamic acid from the medium.  The micro-organism to be used is one of a set of five whose bacteriological properties are listed and which are classified as Bacillus megatherium or Bacillus circulans.  Various carbon and nitrogen sources are specified.  Reference has been directed by the Comptroller to Specification 826,097.
Patent GB-973117-A (GB)
Title: Improvements in a framework for a suspended ceiling
IPC: E04B9/12
Filed: 1962-02-01
Abstract: 973,117. Joining metal bars. HEYBROEKZELANDER N.V. Feb. 1, 1962 [April 12, 1961; April 20, 1961; July 28, 1961], No. 3842/62. Heading E1K. A method of joining members 1, 2 of U- shaped cross-section with legs 7, thickened at their free ends 6 to reduce the width of the channel, to form a framework to support a ceiling or mainseat comprises inserting sliding pieces 4 in the channel and by two or more screws attaching a cover plate 5 thereto to force the pieces against the ends 6 to join the ports together. The cover piece 5 may be formed with tapered tongues 15, Fig. 8, which upon tightening of the screws 9 cut into the ends 6 and due to their inclined position draw the members 1, 2 together. A modified sliding piece 12, Fig. 5, may be used which can be slid obliquely into the channel where it is impossible to introduce the piece from the end of the channel. The method may be used to join members end to end or at oblique angles.
Patent GB-846164-A (GB)
Title: A preassembled panel for preassembled building construction
Inventor: KRAUSS WOLFGANG W
IPC: E04C2/38
Filed: 1958-02-06
Abstract: 846,164. Building panels, windows, walls. REPUBLIC STEEL CORPORATION. Feb. 6, 1958, No. 3935/58. Classes 20(3), 20(4) and 87(1) A hollow metal building panel comprises a vertical plate 8 spaced from two plates 9, 9a which have corrugations defining an opening S leading to a glass fibre pad 12 inside the panel, the plates being connected by side frame members 10, 11 and upper and lower frame members 13, 14. The side frames 10, 11 are of outwardly facing channel formation and engage with mullions comprising channel-section beams 52, 53 and cover plates 58, 59, as in Fig. 2; the side frames and mullions extend upwardly beyond the metal panel to form window frames. The glass fibre pad is supported by the free edge of the plate 9a, by a plate 27 secured to the lower frame member 14, and by the flanges 49 of angled plates 45a fixed to the side frames, which plates also retain the side flanges of plate 8. Beads 18 on the side frames co-operate with angle bars 19 to support the plate 9. A filter screen 44 may be provided between the insulating pad and vertical plate 9. The upper frame member 13 is stepped to co-operate with the window frame 32 and its packing flange 33. The lower frame member 14 is of similar stepped form and has a downwardly extending flange 40 bolted to an angle brace 37 which is anchored to the concrete floor sill B; to allow for vertical adjustment of the parts, the flange 40 and angle brace are vertically slotted.
Patent GB-442697-A (GB)
Title: An improved method of joining lead pipes
IPC: F16L13/08
Filed: 1935-02-07
Abstract: 442,697. Soldering pipes. AOKI, S., 736, Sanchome, Minami-cho, Takata, Toshimaku, Tokio. Feb. 7, 1935, No. 3987. Convention date, Feb. 16, 1934. [Class 83 (iv)] [See also Group XXVIII] In jointing lead pipes the end of a pipe 2 is placed within the end of a pipe 1 or a connecting pipe, a filler of rubber tubing 3, which is expansible and adhesive under the action of heat, is positioned around the end of the pipe 2 and the remaining space between the ends of the pipes is filled with solder and heated. One end of the tubing is secured inside the other and the tubing is flattened by the pressure applied by the outer pipe. The Specification as open to inspection under Sect. 91 also states that the filler may consist of sodium water glass or rubber cement or of rubber tubing suffused with these materials. This subject-matter does not appear in the Specification as accepted.