baber/WOPTO huggingface dataset:
Patent GB-650429-A (GB)
Title: Improvements in or relating to electric cables for high frequency
Inventor: DALLIMORE LESLIE MILLWARD
IPC: H01B11/18
Filed: 1946-09-04
Abstract: 650,429. Cables. STANDARD TELEPHONES & CABLES, Ltd. Sept. 4, 1946, No. 23148/45. [Class 36] A coaxial cable has the outer conductor corrugated with such amplitude c and wavelength # of corrugation that the cable can be wound upon a drum, the radius of which is as low as twenty times the diameter of the outer tubular conductor ; the arcuate length of corrugation exceeds the wavelength by an amount such that the ratio of these dimensions exceeds unity by 8b/B, where b is the radius of the outer tubular conductor and B is the diameter of the drum. The amplitude of the corrugations is made greater than the thickness of the outer tubular conductor but less than <SP>1</SP>/ 100 th of the diameter of such outer tubular conductor. The corrugations are sinusoidal and may be perpendicular or oblique to the axis of the cable, being formed in the latter case as a single- or multi-start helix. The inner conductor 1, Fig. 3, may be a tube formed from a toothed copper tape, as described in Specifications 650,425 and 650,426, carrying a third coaxial conductor (or other conductors) within it. Conductor 1 is supported by discs 2 integral with an insulating tube 3 as described in Specification 650,430. The outer conductor 4 may also be formed from one or more toothed copper tapes as described in Specification 476,098, and may have a binding wire applied in the troughs of the corrugations, or it may be bound with two or more helical steel or copper tapes 5. The attenuation is only increased slightly by the corrugations, of the above dimensions. The optimum ratio of diameters of the inner and outer corrugated conductors lies between 3.7 and 4.0 instead of the usual 3.6 for a plain outer conductor.
Patent GB-642142-A (GB)
Title: Method of grinding lenses
IPC: B24B13/01
Filed: 1947-08-21
Abstract: 642,142. Grinding lenses. SUPER-CUT, Inc. Aug. 21, 1947, No. 23204. Convention date, Aug. 23, 1946. [Class 60] A method of grinding lenses in which a lap-type, disc-like grinding tool 22 having a surface embodying a predetermined diopter curve is rotated about its axis and imparts rotary movement to a lens blank engaging the surface, the axis of the blank being at an angle to the axis of the tool, is characterized in that the surface is provided with a single annulus of fixedlymounted diamond particles having a mesh size from approximately 60 to 120, and that the tool is rotated at a speed between 1,250 and 6,000 r.p.m. The tool 22 has a boss 23 to receive the tapered end of a spindle rotatably mounted in the frame of the machine and driven by a belt 19 from a motor 18. The blank is mounted on a holder 31 having a tapered hole 32 to receive the end of a rod 29 adjustably secured by a screw 30 in a slot in a lever 25. This lever is mounted in a sleeve for sliding movement in the direction of its length, the sleeve being pivoted on a horizontal pin 28 which is in turn provided about the vertical axis of a standard 26. The blank is ground by moving the lever to and fro in its sleeve so that the blank follows a radial path on the tool. To correct the lens, a toroidal surface is ground by holding the blank holder to prevent it from spinning while rocking it back and forth on the surface of the tool. The latter is preferably in the form of a casting in brass, bronze or other suitable metal and has its upper surface covered with diamond particles which are embedded in a matrix. Liquid coolant, supplied from a pipe 33, escapes though a drain 34 in the casing.
Patent GB-1483425-A (GB)
Title: Hot gas engine heater head
IPC: F28D9/00
Filed: 1975-05-29
Abstract: 1483425 Hot gas engines UNITED STIRLING (SWEDEN) AB & CO KB 29 May 1975 23378/75 Heading F1S The invention relates to a hot gas engine heater head comprising heater pipes 5 in annular disposition around a central axis for heating by a common combustion means (not shown) the heater pipes connecting cylinder tops 1 to respective regenerator housings 3 only one cylinder top and regenerator housing being shown. According to the invention each heater pipe has a curved portion arranged upon an imaginary conical surface the curved portions of the heater pipes being nearer to the central axis than other portions of the heater pipes. Each heater pipe comprises a substantially straight portion which extends substantially parallel to the central axis. The curved portions of the heater pipes are connected through manifolds 7 to the respective regenerator housings 3 and the substanially straight portions of the heater pipes are connected through manifolds 8 to the respective cylinder tops 1.
Patent GB-1339371-A (GB)
Title: Electrical machine housings
IPC: H02K5/15
Filed: 1972-05-18
Abstract: 1339371 Electrical machine housings ROBERT BOSCH GmbH 18 May 1972 [19 May 1971] 23404/72 Heading H2A In an electrical machine housing 10 comprising a body 11 on a first end of which is securely retained a bearing plate 13 by material deformations 17 in a surface of one of the body or plate, each deformation is associated with a respective recess 20 in a surface of the other of the plate or body and when the plate is so retained each recess is offset relative to its associated deformation such that the bearing plate may be removed from the body when the recesses are brought into registry with the associated deformations upon relative movement between the plate and body. As shown, the recesses 20 are in the bearing plate 13 and the deformations 17, comprising pairs of chiselled grooves 18, are in the body 11, the plate having holes 21 for receiving a tool by which it may be angularly moved and also for ventilating the housing. The cupshaped body, of iron, forms the machine yoke. Instead of being cylindrical, the housing may have two oppositely flattened sides on which machine parts may be mounted.
Patent GB-858756-A (GB)
Title: Process and apparatus for the treatment of materials in very small particles, particularly coal and ore slimes
IPC: B03B5/18
Filed: 1957-07-24
Abstract: 858,756. Washing coal and ore slimes. HARVENGT, E. July 24, 1957 [July 27, 1956], No. 23467/56. Class 82(2) A coal or ore slime treating process comprises dividing the slime into two portions, one portion containing the greater density, larger size particles and a major proportion of the greater density smaller size particles, the other containing the less dense particles and the remainder of the greater density, smaller size, particles, mechanically separating the larger size, less dense particles from the other portion and subjecting the smaller size, greater density particles and the smaller size, less dense particles to a recovery treatment. As shown, the slime may be fed to jigs 2 the underflow going to waste and the overflow to a vibrating screen 11, the oversize being values and the undersize passing to a thickening cone 12 and then to a trough 13 having evacuating cones 14 which discharge shales and middlings, the clean coal being discharged at the end of the trough. In a modification, Fig. 2 (not shown), the sieve 11 is followed by a froth flotation cell or cells and in a further modification, Fig. 3 (not shown), the thickener is followed by jigs.
Patent GB-191114-A (GB)
Title: Improvements in or relating to clutches
IPC: F16D43/22
Filed: 1921-09-05
Abstract: 191,114. Fieux, J. Sept. 5, 1921. Clutches, friction.-In helical coil clutches, the free end of the coil is energized by the difference between a force derived from a system of centrifugal masses and an oppositely-acting force due to the driving-torque, so that the clutch tends to engage automatically at a predetermined speed but fails to engage fully until the load resistance is sufficiently low. As shown diagrammatically in Fig. 1, an internal helix 12 runs in a drum 10 secured to or integral with the driven shaft 9, its free end being acted upon by an arm 2<1> on the driving-shaft 1 and its other end by the extension 5<1> of an arm 5 on a loose sleeve 6. Masses 4, 8, 4<1>, 8<1> are pivoted together in pairs and connected respectively by links 3, 7, 3<1>, 7<1> to arms 2 on the shaft 1 and the arms 5, so that centrifugal force tends to expand the coil 12, while an increase of torque reduces the reaction thereon of the part 2<1>, drive being in the sense of the arrow. By employing a large number of turns in the coil, the pressure of the arm 2<1> necessary to hold the clutch in engagement becomes a small fraction of the pressure of the part 5<1>, so that the clutch is sensitive to slight changes of load irrespective of the value of the co-efficient of friction. Fig. 3 shows a practical form, wherein the arms 2, 5 are replaced by discs, on which a plurality of masses is articulated by links 3, 3<1>, 7, 7<1>, and the arms 2<1>, 5<1> are replaced by pins, such as 2<1>, on these discs. Drive is transmitted directly from the disc 2 to the sleeve 6 and its disc (not shown) by projections 22, 23 having a small relative play. Other parts shown in Fig. 3 are numbered to correspond with Fig. 1. Figs. 4 and 5 show another form, in which the driving-element 2 is a fly-wheel and the centrifugal masses 4, 18, 19 are constituted respectively by enlargements of the links 3, 16, 17 so shaped as to occupy the space within the coil 12 and drum 10 as fully as possible. The linke 3 are pivoted to bosses 24 on the fly-wheel 2 and the links 16, 17 to bosses 25 on the sleeve 6, which is journaled on a boss 14 of the fly-wheel and is integral with the disc 5. As shown in Fig. 5, the bosses 24, 25 form abutments to limit the inward movement of the masses. A torsion spring 26 bears on a pin 27 in the part 2 and on a pin 28 in a ring 29 adjustable in the sleeve 6, and, by acting in opposition to the centrifugal torque, renders the clutch inoperative below a predetermined speed. The coil 12 engages the discs 2, 5 by lugs 20, 21. A casing 15 secured to the fly-wheel 2 bears on the driven shaft 9 and is provided with cooling-fins 30.
Patent GB-648247-A (GB)
Title: Improvements in or relating to the production of vitamin preparations
IPC: A61K31/16
Filed: 1946-08-09
Abstract: Vitamin concentrates are prepared by saponifying animal or vegetable oils or fats with alcoholic potassium lye, extracting the residue with aliphatic ketones containing not more than 7 carbon atoms, and treating the ketone extract with benzine and then water to yield a benzine layer containing the vitamins, and the benzine is distilled therefrom.ALSO:A vitamin preparation is obtained by dissolving in a refined non-drying vegetable oil a vitamin concentrate obtained by saponifying fish oil or maize seed oil with alcoholic potassium hydroxide, distilling the alcohol from the reaction product, extracting the residue with acetone, treating the acetone extract with water and benzine, and distilling off the benzine from the benzine extract.
Patent GB-879402-A (GB)
Title: Improvements in or relating to cathode follower output stages
Inventor: BARNARD CLIFFORD ALBERT
IPC: H03F3/44
Filed: 1958-07-23
Abstract: 879,402. Valve pulse amplifying circuits. PYE Ltd. July 20, 1959 [July 23, 1958], No. 23710/58. Class 40(6) In a cathode follower circuit in which the cathode follower V1 is fed with positive going pulses, e.g. synchronizing pulses in a television waveform, distortion of the trailing edges of the pulses, due to stray capacity CS is prevented by shunting the load with a valve V2. The valve V2 is normally biased to cut-off, but is driven with the inverted waveform which is differentiated by condenser Cl in conjunction with resistance R2. Positive going "spikes" produced by differentiation from the trailing edges of the pulses then cause valve V2 to conduct and rapidly discharge the capacity CS. Specification 879,400 is referred to.
Patent GB-1196078-A (GB)
Title: Textile Materials having Durable Antistatic Properties
Inventor: OKUHASHI TOMOMI
IPC: D06Q1/04
Filed: 1968-05-17
Abstract: 1,196,078. Metallizing textiles. TEIJIN Ltd. May 17, 1968, No 23739/68. Heading C7F. [Also in Division D1] A textile material having anti-static properties comprises organic textile fibres and a minor amount of electrically-conductive fibres, each electricallyconductive fibre comprising a substrate of organic synthetic fibre and a metallic coating chemically deposited thereon, and possessing the functional properties of a textile fibre. The proportion of coated fibres may vary from 0À01 to 10 per cent by weight. The thickness of the metallic coating may vary from 0À01 to 1À5 microns. The metallic coating may be protected by a coating of organic polymeric material. Said substrate is preferebly one acrylic polymer having an acoylonitrile content of at least 80 Mol per cent, but may be a polyester having an ethylene terephthalate content of at least 80 mol per cent. The substrate fibre can have a textile denier of from 1 to 50 deniers. The material may be in the form of yarn, string, cord, tape, woven fabric, knitted fabric or non-woven fabric. The metallic coating is preferably of nickel or copper, but cobalt, chromium, zinc or tin may be used. The substrate, prior to coating, is measured degreased, etched, sensitized and activated. With acrylic fibres, said etchants of the chromic acid - sulphuric acid type may be used. With polyester fibres an alkali etchout is used to effect a weight decrease of from 0À3 to 10 per cent. Sensitizing is effected in an acid or alkaline bath of a stannous compound, titanium trichloride, or aluminium chloride. Activation consists in coating the substrate with a noble metal such as palladium, platinum, gold or rhodium by means of an activator such as the palladium chloride-hydrochloric acid type.
Patent GB-207620-A (GB)
Title: Improvements in or connected with bowden wire and like mechanism
IPC: F16C1/16
Filed: 1922-09-01
Abstract: 207,620. Bowden Wire, Ltd., and Nisbet, A. H. Sept. 1, 1922. Controlling-apparatus, arrangements of transmission gear in conjunction with; pedals and pedal levers, mounting.-Relates to Bowden and like control mechanism of the kind adapted for hand and foot actuation, as for instance in the throttle control of a motor-vehicle engine, the outer Bowden member being divided intermediately of its length and acted upon by direct pressure of a foot lever or the like; and comprises an arrangement wherein one divided portion g of the outer Bowden member abuts against a swivel block h carried by a bracket j on a base plate r and the other divided portion f abuts directly against a foot lever &c. e pivoted to the base plate at k. Means are preferably provided whereby the foot lever can be adjusted according to the inclination of the support, such as a dashboard q, steering pillar &c., to which the base plate r, with or without clips or other fastening attachments, is secured. For this purpose, the foot lever is formed in two portions l, e connected by a pivot m and also by a bolt n carried by one part l and engaging a series of holes o or an arcuate slot or groove formed in the other part e. The pedal may be fitted with a roller p or other movable member. Provision may be made for intermediate actuation of the Bowden mechanism at more than one point.
Patent GB-501214-A (GB)
Title: Improvements relating to the charging of furnaces
IPC: C21D9/00
Filed: 1937-08-31
Abstract: 501,214. Charging and discharging. WELLMANSEAVER ROLLING MILL CO., Ltd., and McLAY, G. S. Aug. 31, 1937, No. 23828. [Class 51 (ii)] Rows of spaced billets 2, retained by fingers 22 on spaced roller channels of a tray 15 transportable by crane, are slid on to a furnace hearth 20 by a tilting roller platform 17 which, after each release of a row, is moved back out of the furnace a little, a hooked bar 23, movable on a slide or trolley 26 and usable in either line of furnaces, withdrawing the heated billets on to an inclined roller way 31.
Patent GB-171489-A (GB)
Title: Improvements in or relating to the production of metal sheets, leaf or foil
IPC: B21C37/02
Filed: 1920-08-18
Abstract: 171,489. Vidal, A. E., (Successiori di G. Oggioni & Co.). Aug. 18, 1920. Metal foil.-In making foil, the sheets of metal to be beaten out are separated by pairs of sheets of parchment paper. These sheets of paper may be caused to adhere and are arranged with the fibres, or directions of stretching due to calendering, at right-angles to each other.
Patent GB-622484-A (GB)
Title: Electron-optical device
IPC: H01J31/50
Filed: 1946-08-13
Abstract: 622,484. Discharge apparatus. SOC. D'APPLICATIONS TELEPHONIQUES. Aug. 13, 1946, No. 24067. Convention date, Sept. 11, 1944. [Class 39 (i)] An electronic tele scope comprises E photo-electric cathode 2 on the wall of an electronic tube 1, a concave mirror 3 focussing ar image on to the inwardly-directed surface of the cathode, secondary electron-emitting electrodes 5, focussing electrodes 4, 6, 7, a fluorescent screen 8 and a second concave mirror 11, focussing the image on screen 8 into an eye-piece (not shown). The fluorescent screen 8 may be transparent or opaque. A screen 9 may be mounted on mirror 3 to exclude visible radiation and pass infra-red radiation. The Specification as open to inspection under Sect. 91 also comprises concave mirrors which are integral parts of the tube, flared parts being plated to form specular surfaces, and the whole is enclosed in a tube provided with an eye-piece. The photo-cathode and fluorescent screen are arranged at the focal points of the mirrors. This subject-matter does not appear in the Specification as accepted.
Patent GB-626047-A (GB)
Title: Extrusion press
IPC: B23K35/40
Filed: 1945-09-18
Abstract: 626,047. Extrusion presses. ERNST, W. Sept. 18, 1945, No. 24094. Convention date, Oct. 20, 1944. [Class 87 (ii)] [Also in Groups XXVIII and XXX] To prevent movement of the extrusion die due to strain in the extrusion press bed consequent on the elongation of the strain rods during extrusion, the extrusion cylinder 11 only of the press is rigidly secured (by bolts 13, 15) to the bed 10, the hydraulic power cylinder 37, connected to the cylinder 11 by strain rods 40, being held down to the bed 10 but free to slide longitudinally thereon in guide-ways 47, 48 (see Fig. 4). The elongation of the rods 40 is thus accommodated entirely by movement of the power cylinder 37 and in the machine shown, which is fitted with a cross-head 18 for coating welding rods, this ensures correct centering of the rods in the die mouth and a uniform coating. The hydraulic connections 53, [see Group XXVIII], to the cylinder 37 are designed to alow slight relative movement between the cylinder and pipe lines. The cross-head 18 is secured to the extrusion cylinder by clamps 31 operated by a handle 33 turning screws 32. The welding rods 23 are fed from a hopper 27 by rollers 29, 28 rotated by a motor 30 and the coated rods 24 removed by a conveyer 26.
Patent GB-1207066-A (GB)
Title: A process for treating porous ceramic heating-radiating elements, as well as the treated elements
Inventor: BOMMEL WILLIAM ARNOLD EDWIN FU
IPC: C04B41/85
Filed: 1969-05-12
Abstract: 1,207,066. Impregnated porous ceramics. W. A. E. F. BOMMEL. 12 May, 1969 [13 May, 1968], No. 24186/69. Heading C1J. Porous ceramic heat radiating elements for fires are given a coal like appearance by impregnation with a solution of at least two metal salts, each of At.Wt. 50-100, and heating to form the oxides, the salts being such that after heating at least one metal is in the divalent and at least one is in the trivalent state. Elements of chamotte or pumice are described while preferred solutions contain (a) ferrous or ferric salt (b) cobalt salt and (c) copper, nickel or manganese salt or their mixtures. In addition, a flame colouring salt e.g. of sodium may be present.
Patent GB-705909-A (GB)
Title: Improvements in or relating to lubricating grease
IPC: C10M169/00
Filed: 1950-10-04
Abstract: A grease composition comprises a synthetic oil which is a distillation residue of the Oxo process, or is obtained from this residue by esterification with a saturated dicarboxylic acid preferably containing 4-12 carbon atoms, thickened to a grease consistency with a lithium or aluminium soap of a saturated fatty acid having more than 12 carbon atoms.  The distillation residues boiling above 210 DEG C. or 250 DEG C. are preferably used.  Olefins obtained by polymerizing mixtures of propylenes and butylenes, or olefins obtained from the Fischer-Tropsch process, may be used in the Oxo process.  Dicarboxylic acids referred to are adipic and sebacic acids.  Lithium soaps of hydrogenated fish oil acids, stearic and hydroxy stearic acids, and of acids derived from beef fat, lard oil and tallow are referred to, and aluminium stearate is also mentioned. Phenyl alpha naphthylamine may be added to the composition.  Mineral oil may also be mixed with the synthetic oil composition.
Patent GB-1108937-A (GB)
Title: Improvements in electrochemical machining
Inventor: BROWN DENNIS COCKBURN
IPC: B23H3/04
Filed: 1964-06-11
Abstract: <PICT:1108937/C6-C7/1> In a method of electro-chemical machining in which the workpiece forms the anode and the tool the cathode and electrolyte is present between them, relative rotation is effected between the tool and the surface of the workpiece and the working face of the tool comprises at least one electrically conducting area in the form of a sector bounded by radii extending from the axis of rotation, and at least one non-conducting area, whereby the current flowing is concentrated in the conducting surface areas of the tool. The electrolyte may be fed through an axial passage in the tool, to its working face.  The conducting sectors may be slightly recessed below the non-conductive areas.  The tool may be formed either of non-conductive material with an inset portion of conductive material, Fig. 2a (not shown) or may be formed of conductive material, part of the working pace being covered with non-conductive material e.g. lacquer Fig. 3 (not shown).  The embodiment shown comprises a metal base portion 15 formed with a projecting segment 17 which occupies an area cut out of an insulating portion 16.  Annular ridges 13, 14 are cut in both insulating material and the conducting area 17, so as to form corresponding annular grooves in the workpiece.
Patent GB-339936-A (GB)
Title: Process for the manufacture of lacquers
IPC: C09D101/18
Filed: 1929-08-08
Abstract: 339,936. Carpmael, A., (7. G. Farbenindustrie Akt.-Ges.). Aug. 8, 1929. Azo dyes; lakes.-Lacquers having a base of cellulose derivatives, e.g. nitrocellulose, are coloured by alkaline earth metal salts of azo dyestuffs containing sulphonic groups obtained by coupling diazotized nitroarylamines with acetoacetic acid arylides. The products are applicable as spraying lacquers for leather, sheet metal, &c.. yielding coloured coatings fast to light and free, from surface efflorescence or " bloom." In an example a paste containing the calcium salt of the dyestuff 5-nitro-2-aminobenzoic acid # the sulphonic acid of acetoacetic acid-2-anisidide and diethyl phthalate is stirred into a solution of commercial collodion wool in a mixture of the monoethyl ether of ethylene glycol, acetone, ethyl alcohol, and butyl alcohol. Other specified types of colouring matters are the barium and calcium salts of the azo dyestuffs, o-nitraniline (substituted or not) # sulphonated acetoacetic acid arylides, the alkaline earth metal salts of the azo dyestuffs, sulphonated nitranilines # acetoacetic acid arylides, and the alkaline earth metal salts of the azo dyestuffs, 5-nitro-2-aminobenzylw-sulphonic acid # acetoacetic acid arylides. Specification 247,288 is referred to. Acetoacetic acid-2-anisididesulphonic acid is obtained by sulphonating acetoacetic acid-2- anisidide with 10 per cent oleum and pouring on to ice.