baber/WOPTO huggingface dataset:
Patent GB-795221-A (GB)
Title: Improvements in heat regenerators
IPC: F28D19/04
Filed: 1956-04-20
Abstract: 795,221. Regenerators. BMW STUDIENGES FUR TRIEBWERKSBAU GES. April 20, 1956 [April 21, 1955], No. 12148/56. Class 64(1) A ,regenerative heat exchanger has a matrix comprising two concentrically arranged stacks 5, 6 of annular lamellae which rotate in opposite directions and are resiliently urged into sealing engagement with spacing discs 7 arranged between the individual lamellae to separate the air and gas passages 3, 4 of the regenerator. Rotation of the lamellae is effected by frictional engagement with the discs 7 which are slidably keyed to a driven shaft 8 and may be provided with scraping edges to clean the lamellae. Rollers 11 driven by chains or toothed gears from the shaft 8 seal the inner and outer peripheral surfaces of the lamellae. At least one of the rollers is resiliently mounted to compensate for thermal expansion of the matrix. The sealing pressure between the discs 7 and the lamellae is produced by a spring-loaded thrust member mounted at one end of the shaft 8. Guide rollers 14 freely rotatable on a shaft 15 ensure correct axial spacing of the lamellae while the latter are in the air and gas passages. In a modification, teeth are provided on the lamellae, the rollers 11 and the discs 7 to form a positive drive from the shaft 8.
Patent GB-1284022-A (GB)
Title: Automatic video signal gain controlling apparatus
IPC: H04N5/52
Filed: 1970-03-13
Abstract: 1284022 Automatic gain control-television RCA CORPORATION 13 March 1970 [21 March 1969] 12152/70 Headings H4F and H4R In a television video signal automatic gain control system the black level of the signal is clamped to a predetermined level and a sampling circuit produces an output whenever a given maximum white level is exceeded. The excessive white level signal is fed both direct and inverted to a combiner circuit which developes, from whichever signal is instantaneously the greater, a gain control signal which is applied to a variable gain unit in the signal path. The excessive white level signal detector may respond to the level in the picture signal and/or to the level in a vertical interval test signal. In addition the D.C. level of the signal from the automatic gain control system is maintained constant regardless of gain setting by a feedback system. As shown in Fig. 1 the output signal from a video signal processing module 14 has its black level lamped to earth potential in clamp 31 and the signal passed to a mode gate 33 which passes either the full video signal, the picture signal only, or the vertical interval signal only, so that AGC is responsive to peak white in the picture and/or the vertical test signal as desired. The resulting is fed to a white signal detector 32, shown in detail in Fig. 4. In the detector 32 the signal after passing through an emitter follower 63 is applied to transistor 64 which amplifies only signals over a predetermined level of whiteness, which signals are fed to transistor 67 while transistor 65 inverts these signals before application to transistor 73. The resulting signals having their positive excursions clamped to earth by diodes 72 and 76 are mixed for application to the output 42 by transistors 68 and 77. The resulting signal is a voltage level dependent on the peak white level and independent of the average picture level. This signal is supplied as a gain controlling signal to the AGC amplifier 18, which is shown in detail in Fig. 5. In the AGC amplifier the video input signal is supplied to the common emitter circuit of a differential amplifier comprising transistors 97, 98 and the division of the signal between the two transistors is controlled by the gain controlling signal which is applied to terminal 21. Since variation of the gain control potential will vary the D.C. signal level at the output 19, a D.C. feedback signal is derived from the output of a video amplifier, Fig. 6 (not shown), connected to the AGC amplifier output 19, by a sync tip clamp, Fig. 7 (not shown), and the D.C. feedback signal applied to terminal 22 of the AGC amplifier to control the D.C. conditions in the amplifier and keep the video output signal at a predetermined D.C. level.
Patent GB-819757-A (GB)
Title: Foundation at great depths of water
IPC: E02D29/09
Filed: 1957-04-15
Abstract: 819,757. Sub-aqueous foundations. CHRISTIANI & NIELSEN. April 15, 1957 [Aug. 6, 1956], No. 12167/57. Class 68(2) A sub-aqueous foundation for constructions at great depths comprises a lower part 1 having a cross shaped recess 2 on its upper surface and an upper part 3 having a correspondingly shaped projection 4 on its lower surface. In use the lower part 1 is first lowered into place to assume a position dependent on the contour of the bottom, then the angle of its top face is determined so that the upper part 3 can be correspondingly constructed so that its upper face will assume the desired orientation when its lower face is made to rest upon the upper surface of the lower part with the projection 4 and recess 2 in engagement. When this procedure has been carried out for all of the foundations the construction to be supported is lowered on to them. The engaging projections and recesses may be formed and distributed on the contact surfaces otherwise than as shown. The parts 1 and 2 are particularly suitable for production by concrete casting.
Patent GB-1204243-A (GB)
Title: Improvements in or relating to the production of fructose and glucose from sucrose
IPC: C13K3/00
Filed: 1968-03-13
Abstract: 1,204,243. Fructose and glucose from sucrose. LAEVOSAN-GESELLSCHAFT CHEM. PHARM. INDUSTRIE FRANCK & DR. FREUDL K.G. 13 March, 1968 [15 March, 1967; 31 Jan., 1968], No. 12174/68. Heading C2C. Fruotose and glucose are prepared from sucrose in a process in which the sucrose is firstly inverted under mild conditions, the pure inert sugar solution freed from mineral acids, if necessary after separation of crystallized glucose, and evaporated under mild conditions, whereupon the invert sugar concentrate, if necessary after separation of crystallized glucose, is treated with a lower alcohol e.g. methanol, and from this solution, if necessary after removal of the residual water down to about 1%, the two sugars are crystallized alternately after inoculation. The inversion may be carried out in 20- 75% (preferably 60%) solution, with an acid content of 0À001-0À05 equivalent of mineral acid, preferably 0À01 equivalent of HC1 per litre of solution at a temperature of 50-120‹ C., preferably at 80‹ C., or with a strongly acid cation exchanger and inversion is stopped by cooling and neutralization when minimum optical rotation is obtained. The invert sugar solution may be evaporated in a thin layer evaporator at a temperature less than 120‹ C. and the water may be removed from the invert sugar solution by treatment of the solution with a countercurrent of dry solvent vapour. The mother solution after crystallization may be rehydrolysed and the hydrolysate again crystallized. This hydrolysate or the original invert sugar solution may be crystallized to yield a mixed crystallisate of fructose and glucose which may be separated as before while the mother liquor from this crystallization is rehydpolysed.
Patent GB-332540-A (GB)
Title: Improvements in revolving cylinder internal-combustion engines
IPC: F02B75/26
Filed: 1929-04-19
Abstract: 332,540. Schõfer, E., and Flechtheim, E. April 19, 1929. Four-stroke-cycle engines; driving-gear; casings.-In a revolving-cylinder engine the cylinders are arranged in pairs tangential to a circle around the shaft b; the pistons carry pairs of rollers f, h which engage on the two sides of a stationary cam rail i. The combustible mixture enters the combustion chamber n and the exhaust leaves through one valve-controlled port; a short passage z connects this port in sequence to a supply passage s<1> and exhaust pipe t<1> formed in the gearing u for the shaft, one set of passage and pipe serving two cylinders. Instead of the two rollers f, h engaging the same cam rail, a separate roller d<1> may be provided for each piston to engage a separate cam for ensuring the movement of the piston on its suction stroke. The cam is shaped to give a longer exhaust than compression stroke. The four cylinders forming the engine are enclosed in a casing k supporting the cams. The valves are held open during the whole of the suction and exhaust strokes.
Patent GB-1376492-A (GB)
Title: Insulated gate field effect transistors and methods of making them
IPC: H01L29/51
Filed: 1972-03-16
Abstract: 1376492 Semi-conductor devices WESTERN ELECTRIC CO Inc 16 March 1972 [18 March 1971] 12243/72 Heading H1K An IGFET comprises (Fig. 1), a semi-insulant substrate 17 superimposed with a semi-conductor layer 14 having source and drain ohmic contacts 11, 13 separated by insulant layer 15 carrying a gate contact 12 and a channel 16 between the contacts overlying the insulant substrate 17; the source-drain current being modulated by the gate voltage. The substrate is of III-V material, e.g. gallium arsenide on which layer 14 is epitaxially grown with vapour deposited source-drain contacts; the intervening uncovered part of layer 14 being irradiated in the high energy protons from a source (Fig. 2, not shown), to increase its resistivity by crystal lattice destruction for part of its depth to form insulant layer 15, in which gate 12 is deposited by etching and vapour deposition. Plural IGFETS may be fomed on a single wafer, separated by scribing and cleaving, and enclosed in a package with thermocompression bonded gold electrode wires. The gallium arsenide substrate may be chromium doped and the source drain contacts may be gold germanium alloy overlain by gold electrodes. Helium ion bombardment may alternatively be used to produce layer 15. The III-V material may be indium phosphide, indium arsenide, phosphide or gallium arsenide phosphide.
Patent GB-489585-A (GB)
Title: Improvements in scaffolding or tubular supports for gravity railways and other purposes
IPC: E04G7/26
Filed: 1937-04-29
Abstract: 489,585. Scaffold clamps. KINGSMAN, H. E. April 29, 1937, No. 12247. [Class 20 (ii)] A tubular scaffolding comprises steel tubes formed with a series of recesses, and brackets or connectors having sleeve portions to encircle the tubes and provided with projections to engage these recesses, whereby slip between the tubes and sleeves is obviated and a considerable range of adjustment of the brackets along the tubes is provided for. In the form shown in Fig. 1, the tubular member 1 is provided with a series of recesses 2 and one member 4 of a two part clamp is provided with corresponding projections 8, clamping being effected by a bolt 9. The clamping members 5, 6, for the other tube may also be provided with projections to engage recesses in that tube. In another form, Fig. 3, the clamping member 10 is made of bent sheet metal and the projections 8 are formed by indenting the metal.
Patent GB-768639-A (GB)
Title: Method for ensilage of grass and green fodder
IPC: A23K3/03
Filed: 1955-04-28
Abstract: A method of ensilage comprises the employment of a salt mixture, either dry or in aqueous solution, consisting of the lactates and or benzoates of sodium, potassium or calcium together with the borates and chlorides of these metals, the pH of the resultant mixture, when in aqueous solution, being approximately 7,0.  The mixture may be produced by mixing the free acids with alkalies such as common soda or sodium bicarbonate.  Starch and other carbohydrates may also be added. The percentage of each constituent is between 0,01 per cent and 15,0 per cent.
Patent GB-1388133-A (GB)
Title: Read mechanism for optically disernible characters
IPC: G06K7/10
Filed: 1972-03-16
Abstract: 1388133 Optical character reader ZELLWEGER USTER Ltd 16 March 1972 [22 Ma ch 1971] 12337/72 Heading G4M The subject matter of this Specification is substantially the same as that of Specification 1,388,131, but the claims relate to the cylindrical lenses 2, 11. Light beam 1 is scanned along a path perpendicular to the figure. The lenses 2, 11 have a length sufficient to act on the scanning beam and the beam reflected from a scanned character. Lens 11 is wider than lens 2 and acts to focus light reflected from a character within a depth of focus region T on to a photo-cell, e.g. a photo-multiplier 13. The ratio of the widths of the lenses is greater than 3, preferably 5-15.
Patent GB-401291-A (GB)
Title: Improvements relating to air filtering arrangements for motorcar and other internal combustion engines
IPC: F02M35/16
Filed: 1932-04-29
Abstract: 401,291. Purifying charge ; casings. VOKES, C. G., 95, Lower Richmond Road, Putney, London. April 29, 1932, No. 12347. [Class 7 (ii).] Dust and grit are prevented from entering the cylinders with the charge and from attacking exposed moving parts, by arranging an air filter adjacent the radiator or between the radiator-fan and the engine. As shown, vertically corrugated or pleated filtering screens 1 are placed behind the radiator and inside the louvres 4 of a motor-car bonnet.
Patent GB-770589-A (GB)
Title: Improvements in or relating to means for regulating flow inside the headers of steamgenerators
IPC: F28F27/02
Filed: 1955-04-28
Abstract: 770,589. Steam boiler headers. SIEMENS-SCHUCKERTWERKE AKT.-GES. April 28, 1955 [April 28, 1954], No. 12355/55. Class 123(2) In a water-tube boiler, especially of the forced flow type, having. riser tubes 2 extending between an upper collector header, Fig. 2a, and a lower distributer header, Fig. 2b, downcomer tubes 4 extending from respective ends of each-header are connected to a tube 5 which passes coaxially through the header and which has a number of openings 6 aligned on the side thereof remote from the ends of the tubes 2, each opening 6-being disposed between two riser openings. Water entering the distributer header from the downcomers flows out through openings 6, around tube 5 into the nearest of the riser tubes, steam-water mixture flowing from the outlet ends of the risers into the collector header, around the tube 5 therein and through its openings 6 into the downcomers. Since the flow paths in the headers are of substantially equal length the working fluid is distributed evenly between the tubes 2 so that overheating of particular tubes is avoided. In modifications, one or more downcomers are connected to' the tube 5 between its ends.
Patent GB-310059-A (GB)
Title: Improvements in and relating to bookbinding
IPC: B42C5/00
Filed: 1929-04-20
Abstract: 310,059. Howard, C. C. April 20, 1928, [Convention date]. Bookbinding. - Leaves of cheque books, note books, ledgers, &c. are cut on the binding edge to form a series of spaced tongues 15, 16 in staggered relation on the alternate leaves, the leaves are assembled in pairs, with the tongues interfitting, the free ends of the tongues are doubled over to form tabs 17, adhesive is applied to the tabs, and the pairs of leaves are stacked together so that the tabs of alternate leaves adhere together and the leaves are interlocked by the tongues.
Patent GB-1117177-A (GB)
Title: A method of protecting materials from flames
Inventor: KRAGH-LUND AAGE
IPC: C08K3/26
Filed: 1967-03-16
Abstract: A foaming composition for temporarily protecting a material from flames or high temperature comprises a solid component and a liquid component which foam when mixed.  The liquid component comprises water, polyvinylpyrrolidone, and an acid salt such as aluminium sulphate or aluminium potassium sulphate, and the solid component comprises pea meal and a material which reacts with the acid salt and water to produce CO2 e.g. NaHCO3, preferably plus K2CO3.  Borax and NaCl may also be present.  In an Example a liquid component comprising, by weight, 20 pts Al2(SO4)3, 30 pts water and 1 pt polyvinylpyrrolidone is mixed in 1:1 ratio with a solid component comprising 12 pts Na2CO3, 1 pt K2CO3 and 8 pts pea meal.
Patent GB-571696-A (GB)
Title: Improvements in or relating to machines adapted for applying pressure to shoe parts
IPC: A43D25/06
Filed: 1943-07-31
Abstract: 571,696. Boot - making machines. BRITISH UNITED SHOE MACHINERY CO., Ltd. (United Shoe Machinery Corporation). July 31, 1943, No. 12453. [Class 17 (i)] Sole levelling.-A machine for applying pressure to a work-piece placed between members to which may be given relative movement of approach, has means which measure a dimension of the work-piece in a plane at least substantially at right angles to the direction of pressure application, e.g. the length and/or width of a sole in a sole-levelling machine, and control automatically the total pressure applied accordingly. The invention is described as applied to a shoe-sole-levelling press having two pressure-applying stations at which right and left shoes may be operated on alternately, and at each of which stations a shoe-supporting jack is moved into and out of presentation and pressure positions,pressure members are lowered and a table slide is moved upwardly to apply levelling pressure, all by means substantially as described for the second form of apparatus in Specification 21588/03, [Class 17]. The lower end 146 of the toggle linkage 132, 133, by which levelling pressure is applied by the table 14, which carries the heel post with engaging pin and toe post, is supported on a lever 148 pivoted at 150 to the machine frame and connected at its other extremity to a piston 154 in a hydraulic cylinder 156, the escape valve 162 of which is loaded by a spring 172 so as to yield in accordance with a pressure dependent on the dimension of the shoe sole. The pressure at which the toggle linkage 132, 133 yields is determined by the compression of the spring 172 which in turn is determined by the relative position of toe gauge 232 and side gauges 234, 235 positioned to engage respectively toe and sides in vicinity of the ball line, i.e. by the length and width of the shoe. These gauges position relatively to each other, through flexible cable drive and rack-and-pinion gear, a pair of wedge members 196, 200 around a pin to determine the compression of the spring 172. The wedges 196, 200 are forced together and thereby locked during movement of the shoe support from loading or presentation position to pressure position, and the gauges are then moved from the shoe to permit the pressure determined by the setting of the wedges to be applied to the shoe bottom.
Patent GB-1075742-A (GB)
Title: Improvements in or relating to industrial trucks
Inventor: CONSTABLE CHARLES FREDERICK
IPC: B62B3/06
Filed: 1964-03-24
Abstract: 1,075,742. Masted lift trucks; pallet trucks. LANSING BAGNALL Ltd. March 18, 1965 [March 24, 1964], No. 12460/64. Heading B8H. A masted lift truck which is operable as a pallet truck comprises a body portion 11, supported on a steerable drive wheel 13 and castor wheels 19, 20, and a mast assembly 25, 26, provided with forwardly projecting legs 40 having lowerable ground-engaging wheels 42. The mast assembly is supported on a cross-member (22), Figs. 2, 6 (not shown), supported on levers (30) mounted on rock-shafts (31) fixed to the cross-member (22). The levers (30) carry arms (35) connected by spherical bushes (36) to a rock-shaft (32), which is supported on a spherical rubber bush (33) held in a bracket 34 welded to the body portion 11, whereby, on raising the mast assembly relative to the body portion by extending hydraulic jacks 4G, 47, the mast is tilted rearwardly. The wheels 42 are supported in forks (59) which are pivoted at (58) to the arms 40 and which are connected by links (53) to arms (64) on one end of the levers (30) whereby, as the mast is raised the wheels 42 are lowered. A lifting carriage 27 on the mast assembly is provided with fork arms 50 which are of downwardly facing channel section and which, in their lowermost position, nest over the legs 40, Fig. 4 (not shown). Controls are provided whereby the legs 40 and mast assembly are lowered when the fork arms 50 reach a predetermined height.
Patent GB-1028789-A (GB)
Title: Toy submarine
Inventor: HESS BRUNO
IPC: A63H23/04
Filed: 1965-03-24
Abstract: 1,028,789. Toy submarines. PREFO DRESDEN VEB. March 24, 1965, No. 12477/65. Heading A6S. An electrically driven toy submarine having vanes or fins set to diving position is varied from normal speed to low speed by a resistance which is brought into circuit by a member driven by the motor, whereby the craft rises to the surface under the influence of buoyancy chambers 12,14. A worm 2 on the propeller shaft 1 drives a worm wheel 3 having a projection 5 thereon which periodically during its rotation intercepts contacts 8a, 8b whereby the resistance 9 is brought into series connection between motor 4 and battery 10.
Patent GB-1197377-A (GB)
Title: Silica
IPC: C01B33/113
Filed: 1968-03-14
Abstract: 1,197,377. Crystalline hydrated silica. ENTREPRISE MINIERE CHIMIQUE. 14 March, 1968 [17 March, 1967], No. 12480/68. Heading C1A. A crystalline hydrated silica, 2SiO 2 .H 2 O, has acid properties and a characteristic X-ray diffraction pattern. It may be prepared from potassium hydrogen disilicate KHSi 2 O 5 , by;treating with an acid, filtering off the precipitated silica, and drying. The reaction takes place rapidly at room temperature and 99% yields are possible if stoichiometric amounts of acid, relative to the potassium in the silicate, are used. Any aqueous acid can be used e.g. sulphuric, hydrochloric, nitric, phosphoric and acetic acids, and it should preferably be sufficiently dilute for the potassium salt product to be taken up into solution. The silica hydrate may be partially dried by standing in air or completely dried by standing in vacuo in the presence of phosphoric anhydride. In a preferred method the potassium hydrogen disilicate is prepared by the hydrothermal reaction of amorphous silica with potassium hydroxide in an autoclave at 150-400‹ C. The reaction mixture contains less than 1 mole of potassium hydroxide per mole of silica and the water to silica molar ratio is between 1 and 20.
Patent GB-241515-A (GB)
Title: Improvements in and relating to die casting machines
IPC: B22D17/06
Filed: 1925-05-13
Abstract: 241,515. Spritzgusswerk, L. Rohrbach & Co. Oct. 17, 1924, [Convention date]. Actuating-mechanism. -The compressed - air valve 13 of a die-casting machine has an exhaust passage 16 in its stem 15 and is released from its operating handle 17 in certain positions. The valve 13 is closed by a. spring 19 and is opened by a catch 23 which is pivoted on the handle 17 and pressed by a spring 18 to engage a projection on the head 24. When the valve is fully open a formation 21 on the valve body moves the catch to release the valve. In a modification the catch is pivoted to the valve and engages a projection on the handle 17.
Patent GB-921966-A (GB)
Title: Solvent recovery process
Inventor: SLOTA LUCJAN
IPC: B01D53/14
Filed: 1960-04-08
Abstract: A water-miscible organic solvent vapour, e.g. acetone, methanol or ethanol, is recovered from a gaseous mixture by absorption in an aqueous slurry of absorbent C particles.  The solvent is separated from the C, e.g. by filtering off the aqueous solution and lowering the pressure above the C, or by distillation such as continuously passing a part of the C slurry to a distillation column and returning the C slurry via a heat exchanger to the absorber.  The C may be of less than 200 mesh size and the aqueous slurry may contain at least 10g. C/100 c.c.ALSO:Acetone, e.g. used in the dry spinning of cellulose acetate filaments, is recovered from a gaseous mixture by absorbing the vaporized acetone in an aqueous slurry of particles of absorbent carbon and then separating the acetone from the carbon, e.g. by filtering off the aqueous solution and lowering the pressure above the carbon, or by distillation.  The carbon may be of less than 200 mesh size and the aqueous slurry may contain at least 10 g. carbon/100 cc.ALSO:Acetone, methanol or ethanol, is recovered from a gaseous mixture by absorbing the vaporized solvent in an aqueous slurry of particles of absorbent C and then separating the solvent from the C, e.g. by filtering off the aqueous solution and lowering the pressure above the C, or by distillation.  The C may be of less than 200 mesh size and the aqueous slurry may contain at least 10 g. C/100 c.c.