baber/WOPTO huggingface dataset:
Patent GB-676005-A (GB)
Title: Improvements in or relating to gyroscopic apparatus
IPC: G01C19/38
Filed: 1949-01-05
Abstract: 676,005. Gyroscopic apparatus. SPERRY GYROSCOPE CO., Ltd., GLENNY, A. P., and WALOFF, D. Jan. 3, 1950 [Jan. 5, 1949], No. 295/49. Class 97 (iii). In a gyromagnetic compass for craft in which a gyroscope is controlled in azimuth by the application of precessional torques from an electrically-operated torque motor 11 which is energized through a control circuit under the control of a pendulously-supported magnetic field responsive device 1, a switch 17 controlled according to the bank of the craft about its fore-and-aft axis through a predetermined angle nullifies the effect of the precessing torques during banked turns of the craft and irrespective of the heading thereof. The electrical output from device 1 is supplied to the three-phase windings of the stator 4 of a signal transformer 3, the rotor 5 of which is coupled to the vertical ring 6 of a directional gyroscope. If the azimuth position of the gyroscope relative to the earth's magnetic field differs from the position of device 1 relative to that field an alternating electrical signal is generated in the winding of rotor 5 and is supplied to a phasesensitive amplifier 7 which compares its phase to the output from a frequency doubler 8. The direct current output from amplifier 7 actuates the torque motor 11. During turns of a craft greater than Œ 3 degrees, the fore-and-aft trunnions 15, 16 of a gimbal ring 14 of a gyrovertical 12 rotate a conducting disc 18 which is rigid with trunnion 16. A contact 21 fixed relative to the instrument housing thereupon moves from an insulated portion 19 of the disc to short the output from the winding of rotor 5. In modifications, the switch 17 energizes a relay for operating another switch for disconnecting lead 23 from the amplifier 7. In another arrangement a second switch, on the same shaft as the first, cuts out the erection device which is normally used on gyro-magnetic compasses. In a further modification the erecting torques applied by a gravity-responsive device to a gyrovertical are cut out during banks greater than a certain angle, a safeguard being provided by a device such as a manually-operated switch to render the cut-out ineffective when required, e.g. when starting up the gyroscope.
Patent GB-1246744-A (GB)
Title: Electron beam apparatus
Inventor: PLOWS GRAHAM STUART
IPC: H01J37/244
Filed: 1969-01-02
Abstract: 1,246,744. Electron microscopes. G. S. PLOWS, and W. C. NIXON. 1 Jan., 1970 [2 Jan., 1969], No. 300/69. Heading H1D. [Also in Division G1] The detector D of a scanning electron microscope comprises a first accelerating grid G1, a second retarding grid G2 forming a potential barrier of variable height, and preferably a third suppressor grid G3 arranged in front of an electron collector SC which may be a scintillator coupled by a light pipe to a photo-multiplier P. If the specimen is earthed the first grid G1 should be at a potential of at least 25 volts and should produce a field at the specimen of at least 5 kv./m. and preferably more than 100 kv./m.; the second grid G2 is at an adjustable potential of a few volts negative to select secondary electrons of energy greater than a selected value; and the third grid G3 may be connected to G1. The detector may include a screen W which reduces the solid angle subtended by the collector SC and thereby improves the discrimination against fast scattered electrons. In the example shown the grids are planar and parallel, and are disposed along the normal to the specimen S. The grids may alternatively be part-spherical, or even cylindrical surrounding the normal.
Patent GB-605759-A (GB)
Title: Improvements in chucks, particularly applicable for centre lathes or the like
IPC: B23B31/16
Filed: 1946-01-04
Abstract: 605,759. Chucks. PARKES, E. L. Jan. 4, 1946, No. 341. [Class 83 (iii)] A chuck in which the jaws are operated by toggle links controlled by a slidable member rotating with the chuck body has the outer ends of the toggle links pivoted respectively to a jaw and a normally stationary member, and an operating link pivoted at the common axis of the toggle levers, its other end being connected to the said slidable member. The jaws 3 slide in radial grooves 2 in a body member 1 and are retained by a front cover-plate 9. Toggle links 4, 5 connect the jaws to adjustable screwed anchor pins 6 carried by bushes 7 adjustable from the periphery of the body. The connecting pivot for the toggle links also carries a link 12 which is pivoted at its other end to a stud 13 secured for radial adjustment to a grooved member 11 slidable on a spigot 10 of the chuck body. The groove 22a in this member is engaged by rollers on a pivoted link (not shown) operable from outside the machine so that the chuck jaws may be moved while the machine is running. The adjustment of the outside toggle links and studs 13 enables work of different diameter to be gripped.
Patent GB-342099-A (GB)
Title: Improvements in apparatus to facilitate instruction in mathematics or the like
IPC: G09B19/02
Filed: 1930-01-04
Abstract: 342,099. Teaching mathematics and surveying. CHESHAM, H. W., Blue Coat School, Psalter Lane, Sheffield. Jan. 4, 1930, No. 360. [Class 146 (ii).] Apparatus for instruction in mathematics or surveying, and which may also be used as a protractor, comprises an index disc 1, provided with a circular scale of degrees, decimals &c., and a cover disc 3, the two discs engaging by means of radial slits, in known manner, for relative rotation, one slit edge of one disc passing through the slit in the other. In a modification, a scale is provided on the back of the cover disc 3. To facilitate rotation, semicircular slots are formed at the ends of the radial slits, directed oppositely in the two discs. The latter are rotatably mounted by means of a flanged, hollow sleeve 5, and a finger-piece 7. When used as a surveying-instrument, the apparatus is mounted either horizontally or vertically on a tripod stand 9, and a sight tube may be passed through apertures in the finger-piece 7.
Patent GB-546091-A (GB)
Title: Improvements in mounting arrangements for shock-absorbers and like resilient means
IPC: B64C25/50
Filed: 1941-01-10
Abstract: 546,091. Aircraft alighting gear. DOWTY EQUIPMENT, Ltd., and BASTOW, F. Jan. 10, 1941, No. 384. [Class 4] An aircraft alighting gear comprising a leg having a pivoted lever carrying a landing-element in trail and controlled by the resilient resistance of a telescopic shock-absorber arranged between the lever and the leg, has one element of the shock-absorber located in a tubular housing at the lower end of the leg and secured against disengagement from the locating means by locking devices accessible from outside the housing. In one form a forked wheelcarrying lever 12 is pivoted to a forked bracket 11 on the leg and a lug 18 on the fork is connected to the plunger 16 of a shock-absorber of which the cylinder 15 has an open lug 21 engaging a pin 19 extending across a housing 10 at the lower end of the leg. The cylinder is prevented from falling out by dowels 22 screwed through the sides of the brackets 11 to engage a flange 23 on the cylinder. These dowels, according to the Provisional Specification may be housed in eccentric bushes so that their distance from the pin 19 may be adjusted. The cylinder is free to rock about the pin 19 as the lever 12 moves about its pivot. In another form the cylinder has a ball and socket connection at tne upper end of the housing and is retained in position by a ring screwed into the lower end of the housing to engage a flange on the cylinder, the ring and flange being formed with spherical surfaces concentric with the ball joint. In another form the cylinder fits snugly into the housing and has a flange engaging the lower end of the housing, dowels screwed through the bracket engaging forked lugs beneath the cylinder. In this case the plunger is connected to the lever 12 by a pivoted link. Fig. 4 shows another form in which the cylinder has a screwed spigot 25 engaging a pivoted socket 24. The spigot is prevented from unscrewing by a spring pin 30 engaging one of a number of slots 29 cut in a flange at the lower end of the cylinder.
Patent GB-1497416-A (GB)
Title: Monoazo dyes
IPC: C09B43/18
Filed: 1975-01-07
Abstract: 1497416 Monoazo dyes SANDOZ Ltd 7 Jan 1975 [11 Jan 1974] 573/75 Heading C4P Novel monazo dyes having the formula (where R 1  and R 3  are independently H, OH, Cl, Br, C 1-4  alkyl, C 1-4  alkoxy, C 1-4  alkylcarbonyl, C 1-4  alkoxy-carbonyl, C 1-4  alkyl-carbonylamino or C 1-4  alkoxy-carbonylamino; R 2  is H, C 1-4  alkyl carbonyl, C 1-4  alkoxycarbonyl, benzoyl, or C 1-4  alkyl optionally substituted by C 1-4  alkoxy, phenoxy, benzyloxy, halo, or OH; R 4  is NO 2  or CN and R 5  is Cl or Br) are prepared by diazotization and coupling or by reacting the corresponding compound, in which R 2  is H, with a compound of formula R 6 COX, where R 6  is C 1-4  alkyl or alkoxy, or phenyl and X is OH, Cl or Br or, when X is OH, an anhydride thereof. The compounds in which R 2  is optionally substituted alkyl are prepared by reacting the compounds of Formula I, in which -OR 2  is replaced by Cl, with the appropriate alcoholate. The dyes are used for colouring fibres or filaments of hydrophobic high molecular weight polymer material, particularly cellulose acetate, polyester or polyamide, in blue to reddish-blue shades.
Patent GB-661895-A (GB)
Title: Improvements in or relating to machines adapted for folding margins or leather or like material
IPC: C14B1/04
Filed: 1949-01-08
Abstract: 661,895. Folding edges of sheet material. BRITISH UNITED SHOE MACHINERY CO., Ltd. Jan. 9, 1950 [Jan. 8, 1949], No. 588/49. Class 42 (i). A machine adapted for folding margins of leather &c. includes a folding finger 14 movable to and fro, a crease foot 16 with which finger 14 co-operates in creasing the work, means for feeding a workpiece past finger 14 and creaser foot 16 to cause a margin of the workpiece to be progressively folded, and supporting means for the creaser foot arranged to allow it to yield heightwise about an axis 41 relatively remote from finger 14 and to move further heightwise about an axis 46 nearer to finger 14 than axis 41. The machine described is similar to that disclosed in Specification 544,010, [Group VII], except for the creaser foot details. As shown, creaser foot 16 is carried on an arm 40 pivoted at 41 to a second arm 42 which is pivoted on screws 46. Arm 40 is urged anti-clockwise about pivot 41 by a plunger 50, spring-pressure on which is controlled by a screw 54. Arm 42 is urged anticlockwise about pivot 46 by a spring 86 which is stronger than the spring acting on plunger 50. A screw 92, threaded to arm 42, engages a stop 94 to limit anti-clockwise movement of arm 42. Arm 40 is connected by a link 68 to a lever 64, pivoted at 62, an arm 84 of which is spring-pressed against an adjustable cam 82 to limit the downward movement of arm 40 and determine the lower, operative position of creaser foot 16. In operation, creaser foot 16 will yield upwardly, to accommodate increase of thickness of the work, by pivoting of arm 40 about pivot 41, movement of foot 16 being substantially parallel to the folding finger 14. To introduce a new piece of work into the machine, the thumb-piece 96 of lever 64 is depressed; arm 40 then pivots at 41 until a shoulder 48 on arm 40 meets a screw 58 on arm 42, after which arms 40, 42 pivot as a unit about screws 46, the movement of foot 16 being then away from finger 14. Pivot screws 46 are disposed at an acute angle to the direction of feed of the work, so that the latter movement of foot 16 takes place substantially parallel to the adjacent inclined face of the hammer 30, interference between the hammer and the presser foot thus being avoided.
Patent GB-571966-A (GB)
Title: Improvements in or relating to bearings
IPC: F16C33/26
Filed: 1944-01-12
Abstract: 571,966. Bearings. GLACIER METAL CO., Ltd., and BATE, J. Jan. 12, 1944, No. 608. [Class 12 (i)] A bearing has the bearing surface formed by segmental members d assembled together on an intermediate layer b of resilient material in the outer shell or backing a of the bearing. Projections on the back of the segments or, as shown at e, on the inner face of the backing a provide for the tilting of the segments to maintain the oil-film lubrication. The segments d may be formed by cuts on a solid coating applied to the intermediate layer of resilient material (rubber). The segments may be of Babbitt metal, cadmium base alloy, synthetic resin.
Patent GB-223095-A (GB)
Title: Method of producing tubes with collars or flanges
IPC: B21D53/16
Filed: 1924-01-09
Abstract: 223,095. Evans, W. E., (Rheinische Stahlwerke, Abt. R÷hrenwerke). Jan. 9, 1924. Metal pipes.-Flanged tubes are formed by coiling a bar on a mandrel of diameter corresponding to the external diameter of the tube, cutting the helix in a longitudinal direction, pressing a single coil to ring form and then placing it on the tube and welding the ends together and to the tube in one operation. The cut in the helix may be tangential.
Patent GB-575295-A (GB)
Title: Improvements in or relating to the production of water-repellent surfaces
IPC: C03C17/30
Filed: 1944-01-12
Abstract: 575,295. Insulators. HARDY, D. V. N. Jan. 12, 1944, No. 613. [Class 36] [Also in Group X] A water repellent substance for insulators and articles made of porcelain or china consists of a solution of an alkyl silicon halide in an inert solvent and is applied thinly by pressure between the surface and a closely fitting complementary surface. The surplus reagent and any free hydrogen chloride are removed by washing after separation of the surfaces. The substance may consist of a mixture of dimethylsilicon dichloride and methylsilicon trichloride. The complementary surface may be formed by moulding on the surface to be treated and may comprise two or more parts for application to convoluted or conical articles. Inert solvents for the substances may be benzene, cyclohexane, normal hexane, carbon tetrachloride, trichlorethylene &c.
Patent GB-546539-A (GB)
Title: Improvements in electric transformers and inductances
IPC: H01F29/06
Filed: 1941-01-16
Abstract: 546,539. Transformers ; inductances. SIMMONS, W. E., and HARMER, H. M. Jan. 16, 1941, No. 618. [Class 38 (ii)] A variable inductance or variable ratio autotransformer comprises a helical winding 6 of bare conductor the turns of which are in screw engagement with an adjustable insulating nut 15 which is slotted to carry a spring-urged contact 16 which is thus caused to traverse the conductor by rotation of the winding. Connection may be made to the ends of the winding through slip ring and brush mechanism 22, 32. The winding may have a non-circular laminated iron core around which is placed insulation having a cylindrical external shape to carry the winding. The magnetic circuit may be completed by laminated yokes 29.
Patent GB-1170721-A (GB)
Title: Improvements relating to the Connection of Pipe-Lines to Injection Pumps
IPC: F02M55/00
Filed: 1968-01-04
Abstract: 1,170,721. Pipe joints. DAIMLER-BENZ A.G. 4 Jan., 1968 [7 Jan., 1967], No. 672/68. Heading F2G. In an injector pump 1 for internal combustion engines comprising a spring housing 4 secured in the pump body, valve 3, and pump plunger and cylinder 2, the spring housing is provided with a bore 12 extending at right angles to the plunger and cylinder axis and terminating in a conical seating 11 against which the coned end 13 of an injection pipe 14 is directly clamped. As shown, the pipe end is clamped against the conical seating by a nut 18 threadedly engaged in a bored block 15 receiving the housing and the housing is secured in the pump body by a sleeve 7 which is screwed into the pump body and engages an annular shoulder 6 at the end of the housing. In a modification, Fig. 2 (not shown), the pipe end is clamped against the conical seating by a nut threaded directly on to a lateral integral extension of the housing and the housing is in screw engagement with the sleeve, the thread pitch of the housing/sleeve screw engagement being less than the thread pitch of the sleeve/pump body screw engagement.
Patent GB-250328-A (GB)
Title: Improvements relating to building bricks or blocks and to the construction of walls and the like of bricks or blocks
IPC: E04B2/04
Filed: 1925-01-09
Abstract: 250,328. Bonstow, T. L. Jan. 9, 1925. Bricks, special shapes of.-A building brick or block a, Fig. 1, is formed at each end with plain, wide, shallow rabbets b on the top and sides, the bottom being preferably left plain, so that when they are laid side by side in courses, Fig. 5, wide shallow open joints will be presented around the ends of the bricks adapted to be filled with liquid mortar or grout. A brick of the usual dimensions may have rabbets two inches wide, those at the top being three-eighths of an inch deep and those at the side being three-sixteenths. In building a wall, the bricks are laid in a casing or mould formed of panels bolted together and liquid mortar or grout is pumped into the casing through a hose pipe from a tank. A space is left between the walls of the casing and the adjacent surfaces of the bricks, which space is filled with the mortar.
Patent GB-450157-A (GB)
Title: Improvements in drawing-mechanism for use in machines employed for cutting, drawing and forming metal or other material
IPC: B21D24/12
Filed: 1935-01-10
Abstract: 450,157. Stamping. HUMPHRIS, F., Park House, Park Road, Parkstone, Dorset. Jan. 10, 1935, No. 825. [Class 83 (iv)] [See also Group V] Cupping.-In a press for producing drawn articles from strip or plastic material the head k carries a punch A and knockout B. The bed L carries the drawing mechanism and a die G. On descent of the head K, pins D engage pins E to depress a transmitter-plate p which lowers an adjustable sleeve j screwed into an adjustable spring-supported slide d. An abutment f at the bottom of the slide d lowers minor edge supporting plates e and raises major plates c secured to an adjustable ram b carrying the tool holding block m to raise the drawing tool n. The linkage c, e is arranged with knuckle joints as shown in the Figure. The tool-holding block m is adjusted in the ram b by a screw thread and is locked by a check nut. The work-holder F is actuated by a spring t from the tool-holding block m.
Patent GB-1249611-A (GB)
Title: Chemical compositions
Inventor: STAHL ROLAND EDGAR
IPC: C09J157/02
Filed: 1970-01-07
Abstract: 1,249,611. Laminated carpet. E. I. DU PONT DE NEMOURS & CO. 7 Jan., 1970 [7 Jan., 1969], No. 839/70. Addition to 1,205,460. Heading B5N. [Also in Divisions B1-B2 and C3] Carpets may be prepared by bonding a secondary backing material to a structure comprising a pile supported on a primary backing material which has been melt coated with an adhesive composition comprising (A) 10 to 35 weight per cent of a copolymer of 60 to 85 weight per cent ethylene and 15 to 40 weight per cent vinyl, acrylic or methacrylic ester, (B) 10 to 25 weight per cent of a wax of melting point sufficiently high to provide the composition with a softening point of at least 190 F. and (c) 50 to 70 weight per cent of a blend of (a) an aliphatic thermoplastic hydrocarbon resin substantially free from polymerized aromatics prepared from olefin monomers and dienes containing 5 to 7 carbon atoms and having a softening point of 155 to 240 F. and (b) a dicyclopentadiene alkylation polymer resin having a softening point of 40 to 105 F. in a weight ratio of (a) to (b) of at least 1À5. The compositions may also comprise fillers, e.g. clay, talc, calcium and magnesium silicates, calcium carbonate and wood flour. Monomers from which copolymer (A) may be derived include dimethylaminoethyl methacrylate, hydroxyethyl acrylate, ethylene glycol dimethacrylate and isobutyl acrylate; and up to 3% of other monomers, e.g. acrylic, methacrylic and itaconic acids, acrylamide, diallyl maleate diallyl phthalate and diallyl ether, may also be present. The wax may be a paraffin, microcrystalline, Fischer-Tropsch or polyolefin wax. In examples secondary jute backings are applied to carpets having nylon pile on primary jute backings melt coated with adhesives comprising ethylene/vinyl acetate copolymers, polyethylene wax, paraffin or microcrystalline wax, aliphatic hydrocarbon and dicyclopentadiene alkylation polymers, butylated hydroxy toluene and optionally calcium carbonate.
Patent GB-192270-A (GB)
Title: Improvements in apparatus for playing games
IPC: G07F17/38
Filed: 1922-02-17
Abstract: 192,270. Matteo, A. Feb. 17, 1922. Mechanical shooting galleries.-In an enclosed coin-shooting apparatus comprising mechanism for adjusting both the gun and the target the coin is placed in a slot and passes to the lower end of an inclined gun A. The gun is adjusted about a pivot by a screw d<2> terminating in a knob outside the casing. The target G, which is provided with a coin slot, is adjusted vertically by means of a handle e<1>. The operator, after insertion of the coin, adjusts the gun and target, and then draws back a spring-actuated striker B by means of a knob C. On release of the striker the coin is ejected from the gun and if success. fully directed through the target slot passes out to the operator by way of a shoot g<2>.
Patent GB-537387-A (GB)
Title: Improvements in and relating to machines for cutting metal by the application of heat
IPC: B23K7/00
Filed: 1940-01-15
Abstract: 537,387. Dividing by fusion. SPEAR & JACKSON, Ltd., and PARSONS, G. W. Jan. 15, 1940, No. 869. [Class 83 (iv)] In a blowpipe cutting machine having a mechanically traversed burner carriage guided by an adjustable straight edge co-operating with a line of cut indicated on the work a light projecting means is provided so as to project on to the work a light image or shadow with a guide line adjustable so as to be coincident with the path of travel of the burner with which the indicated line of cut on the work is made to coincide by the adjustment of the work. On the straight edge a, b are mounted lamps c, d provided with means to produce respectively shadows with guide lines X<SP>1</SP> and Y<SP>1</SP>. The lamp c is carried by a bracket laterally adjustable on a slide f and the lamp d is carried by a bracket h mounted on a compound slide at the corner of the straight edge. Both lamp assemblies are angularly adjustable by worm gear. On each limb of the straight edge is mounted a folding notched extension p, t, which are opened so as to form a continuation of the straight edges when the burner is moving along such edge so that a sharp comer on the work may be cut. The lamps are adjusted so as to arrange their guide lines X<SP>1</SP>, Y<SP>1</SP> in alignment with the path of travel of the burner and the work is then adjusted so that the indicated lines of cut Z, Z<SP>1</SP> thereon coincide with the lines X<SP>1</SP>, Y<SP>1</SP>. The portions a, b of the straight edge may be set at any angle with respect to each other and the straight edge may have a curved form when desired.