baber/WOPTO huggingface dataset:
Patent GB-1223056-A (GB)
Title: Optical illuminating system
IPC: G03B27/54
Filed: 1969-01-10
Abstract: 1,223,056. Photo-copying apparatus. DENNISON MFG. CO. Ltd. Jan. 10, 1969 [May 20, 1968], No.1572/69. Headings G2A and G2H. An optical illuminating system for an electrostatic printer comprises a part ellipsoidal, specular reflector 43 having an axial opening through which a lamp 42, e.g. a quartz-halogen lamp, having a translucent envelope extends so that its filament is centred at one focus of the reflector; a lens 3 centred at the other focus of the reflector; and a transparency support 1 between the reflector and the lens, positioned so that a supported transparency will be normal to the reflector axis and centred thereon. The various dimensions of the lens, reflector and lamp are such that the area (r) Fig.2, (not shown) of the open end of the reflector covers the solid angle (B) defined by lines from the lens aperture through opposite edges of the transparency frame T, and that the solid angle (C) subtended by the lens aperture at the transparency centre is larger than the solid angle D subtended by the axial opening of the reflector at the transparency centre. This means that there will be no distinctly dark area of illumination on the transparency, and a lower variation in light level from edge to edge of the transparency. An image of the transparency is projected via a mirror 6 to an exposure window 2 where it falls on a copy sheet fed from a roll 7, cut by a cutter 9 and charged by a corona discharge device 10. The exposed copy sheet passes through a developer or toner tray 14 to a dryer 19 and thence to a delivery station.
Patent GB-323933-A (GB)
Title: Improvements in or relating to differential gearing
IPC: F16H48/10
Filed: 1929-01-16
Abstract: 323,933. Hewitt, N. E., and Bailey, W. M., (trading as Universal Gear Works). Jan. 16, 1929. Differential gearing comprises interengaging planets 12, 13 supported from both sections of a divided casing upon through pins 17. The casing comprises a cylindrical portion 14 and an end plate 15 having a dog interlock at 24. Between the inner face of each planet and the casing-end opposite extends a sleeve or boss 19 solid with the casing and encircling and supporting one of the pins 17. Two pins 17 are shown, each held fast by clamping a boss 19 between a collar 21 and nut 22. Each planet is as long as one of the sun gears 10, 11 plus the length of a distance-piece 18.
Patent GB-988258-A (GB)
Title: Improvements in or relating to bearings
IPC: F16C33/20
Filed: 1962-01-16
Abstract: 988,258. Ball joints. C. S. WHITE. Jan. 16, 1962 [Feb. 20, 1961; March 14, 1961], No. 1622/62. Heading E2F. [Also in Divisions B5 and F2] In a method of making a low-friction bearing comprising a low-friction organic polymer facing, a hard backing member, and a layer of hardenable material bonding the lowfriction material to the backing member, a strip of the low-friction layer is secured to a strip of the hard backing member to form a laminated strip which is then formed into the required shape. The bonding medium may be thermo-setting or thermo-plastic material. The laminated strip may be formed into a bushing by a mandrel, the ends of the strip abutting against one another. The bushing may be then placed on to a larger sizing mandrel, heat and pressure then being applied to soften the bonding layer and to close the gap. The ends of the bushing may be locked together by a tongue 40, and a groove 42 connection, Fig. 8. A bearing for a ball-joint may be made by forming the laminated strip around the ball, placing the ball 56, Fig. 10 with the strip thereon in a socket made in two parts 50, 52 which are subsequently welded together, heating the ball-joint to soften the bonding layer thus causing it to yield and form the low-friction layer to the required shape. Conveniently the laminated strip for the ball is made star-shape. The low-friction layer may comprise fibres of P.T.F.E. resins. Specification 845,547 is referred to.
Patent GB-564742-A (GB)
Title: Improvements in drive unit for locomotives
IPC: F16D3/68
Filed: 1943-02-01
Abstract: 564,742. Resilient torque -transmitting couplings. GEE, N. E. Feb. 1, 1943, No. 1655. [Class 80 (ii)] A resilient drive is transmitted between a driving wheel of an electric locomotive and a spider by a pair of rubber tubular sleeves 10 enclosing a cylindrical solid core 14, the flanged ends 11 of the sleeves being clamped by housings 10a to a spider and the closed ends 13 thereof abutting driving pads 17 on the driving wheel 18. A plate 15 separates the flanges 11. Thus, when a torque is transmitted, one of the sleeves 10 is compressed and the other is stretched. The cylindrical wall of the sleeves adjacent the flanges may be conical, the adjacent faces of the housings being made to correspond.
Patent GB-934484-A (GB)
Title: A method and apparatus for processing metal
Inventor: EWEN IAN ELRICH
IPC: B22D11/10
Filed: 1959-01-19
Abstract: 934,484. Metal melting furnaces. UNITED WIRE WORKS Ltd. Jan. 5, 1960 [Jan. 19, 1959], No. 1821/59. Class 51 (2). [Also in Group XXII] Combined apparatus for melting and continuously casting metals comprises a crucible 6 divided by a baffle 11 formed with holes 12, set in a furnace 1 heated by upper and lower resistors 7, a duct 25 for supplying inert gas, e.g. nitrogen, to the lower crucible compartment, and a watercooled continuous casting mould. In operation, the furnace is purged with gas, heated up and charged with ingots, metal melting in the upper crucible compartment being retained there by the gas passing through the holes 12. Alloying constituents may then be added, being thoroughly mixed by the gaseous streams, whereupon the supply of gas is reduced or stopped. Molten metal collecting in the lower compartment is continuously cast by withdrawing metal left in the mould. As this takes place the gas is supplied again, and melting and alloying continues in the upper crucible compartment. The furnace shell encloses successive inner layers of heat insulation 3, firebrick 4, and carbon, graphite or ceramic tiles 5 and the resistors 7 may also be made of metal or silicon carbide. Alternatively, the furnace may be inductively heated or gas fired. Thermocouples in the crucible walls may control the heat supplied by the respective upper and lower resistors.
Patent GB-1343222-A (GB)
Title: Floating roof for a liquid storage tank
IPC: B65D88/36
Filed: 1972-01-14
Abstract: 1343222 Floating roofs for liquid storage tanks PITTSBURGH-DES MOINES STEEL CO 14 Jan 1972 [13 April 1971] 1821/72 Heading E1T A floating roof for a liquid in a storage tank has a peripheral annular buoyant pontoon 4 and a plurality of spaced buoys 5 attached thereto in order to maintain the roof afloat and level in the event of a leak, the buoys 5 being disposed either on the upper surface of the roof or projecting slightly down through the roof, and the pontoon 4 having sealing means 15 engageable with the tank T. The buoys 5 may be hollow or filled with a foamed material. The pontoon 4 may be of circular (as shown) or trapezoidal cross-section, with reinforcements if desired (Figs. 6 and 7, not shown). For details of shape, dimensions and materials employed the specification should be referred to.
Patent GB-1209292-A (GB)
Title: Improvements in rotary rasps comprising shanks to be held in driving chucks
Inventor: ZENSES CARL
IPC: B23D71/00
Filed: 1969-01-13
Abstract: 1,209,292. Rotary rasps; making rasps. C. ZENSES. 13 Jan., 1969 [19 Jan., 1968], No. 1865/69. Headings B3A and B3K. A rotary rasp having a drive shank 13 and having peripheral and end surfaces formed with rasp teeth 15, 16, is provided with a rib 17 protruding radially to the height of the peripheral teeth 16 and the teeth 15 extend over the rib 17 so that the tool can be used to machine sharp corners. In a method of producing the rasp, teeth 15 are first formed on the end face of a cylindrical blank, the body of which is then machined to provide a protruding rib 17 and finally the teeth 16 are formed on the peripheral surface. The body of the rasp may be drilled out as shown dotted.
Patent GB-1109201-A (GB)
Title: Improvements in semiconductor integrated circuits and their methods of manufacture
IPC: H01L29/08
Filed: 1966-01-14
Abstract: 1,109,201. Semi-conductor devices. SOCIETE EUROPEENNE DE SEMICONDUCTEURS. 14 Jan., 1966 [15 Jan., 1965], No. 1943/66. Heading H1K. In the manufacture of an integrated circuit, a high-resistivity wafer 1 of semi-conductor material having one type of conductivity is superficially oxidized to form an oxide mask (2, Fig. 1), an impurity is diffused through an aperture in the mask (2) to form a region 3 of opposite conductivity type having a surface concentration of the impurity of about 5 x 10<SP>19</SP> atoms per c.c., the oxide mask (2) is removed and the wafer 1 is cleaned, and an epitaxial layer 4 is grown on the wafer I, overlapping the region 3 and having the same conductivity type as the body of the wafer with an impurity concentration of between 10<SP>14</SP> and 5 x 10<SP>14</SP> atoms per c.c., the wafer being heated during this epitaxial growth and if necessary afterwards to a temperature which causes the impurity contained in the region 3 to diffuse into the surrounding regions of the wafer and into the epitaxial layer 4 as far as its surface, forming an isolation region 5 for the integrated circuit.
Patent GB-540907-A (GB)
Title: Process for the manufacture of ethers and esters of dl-tocols
IPC: C07D311/72
Filed: 1940-02-01
Abstract: 540,907. Tocol ethers and esters. HOFFMANN-LA ROCHE & CO., AKT.-GES., F. Feb. 1, 1940, No. 1984. Convention date. Feb. 14, 1939. [Class 2 (iii)] Ethers and esters of dl-tocols are prepared by condensing phytol or phytol halides with monoethers or mono-esters of dimethylhydroquinones having in free position ortho to the free hydroxyl group in the presence of an acidic condensing agent. The products are intermediates for the manufacture of therapeutic compounds exerting the activity of Vitamin E. Examples describe the condensation in the presence of zinc chloride of (1) 2:5-dimethylhydroquinone monobenzyl ether with phytyl bromide ; the resulting 5:8-dimethyltocol benzyl ether yields the therapeutically active 5:8-dimethyltocol on hydrogenation in the presence of palladiumcharcoal ; (2) 2:3-dimethylhydroquinone monobenzoate with phytyl bromide to give 7:8- dimethyltocol benzoate, which can be saponified to the active dl-7:8-dimethyltocol by means of methyl-alcoholic caustic potash ; (3) 2:5- dimethylhydroquinone monoacetate with phytyl bromide to produce 5-8-dimethyltocol acetate, which is active and can be saponified to 5:8-dimethyltocol; similarly, 5:8-dimethyltocol benzoate can be obtained by condensation of 2:5-dimethylhydroquinone monobenzoate with phytol. Specifications 532,364, 536,602, 544,027 and 573,719 are referred to. The Specification as open to inspection under Sect. 91 also describes the use of the mono-ethers and mono-esters of trimethylhydroquinone as starting materials. This subject-matter does not appear in the Specification as accepted.
Patent GB-1177491-A (GB)
Title: Improvements in or relating to Display Packaging.
Inventor: CRANE WILLIAM BRADFORD
IPC: B65D73/00
Filed: 1966-01-15
Abstract: 1,177,491. Packing by attaching to cards. INTERNATIONAL INPAK Inc. 13 Jan., 1967 [15 Jan., 1966], No. 1985/66. Heading B8C. In a display package, a heat shrinkable portion of a strip of thermoplastic film 14, adhered to the back face of a support 10, projects through an aperture 11 in the support 10 to form an article embracing loop 15, the heating of which, after an article 12 has been inserted, causes it to tightly embrace the article against the front face of the support 10. In one embodiment, a bottle is positioned at one corner of the display card to facilitate standing and nesting of the packages, the edge of the loop being heat shrunk into an annular groove in the bottle neck to prevent longitudinal displacement of the bottle. The packaging of many other specific articles is described. The width of the thermoplastic film may be greater than the length of the article so that the extending portions of the film are tightly shrunk over the ends of the article. The article (Fig. 11, not shown) may rest on a tab (71) extending outwardly from the display card beneath the aperture or on a panel (84) (Fig. 12, not shown), hinged to the bottom edge of the card. In another embodiment, a plurality of articles (Fig. 14, not shown) are mounted on a single card, which may be provided with separating lines between the individual articles. The display package is formed by advancing, by means of a pusher 113, a display card 111 having three apertures 112, from a stack to beneath an adhesive applying roll 115 which applies adhesive between the apertures 112 on the card 111. The card 111 is passed beneath a roll 117 which presses and adheres a strip of thermoplastic film 116 on to the card 111 up to the edge of the first aperture 112, whereupon the roll 117 is raised and the card 111 further advanced until the aperture 112 is beneath a bar 120. A loop 122 of film is then formed by the downward reciprocation of the bar 120 through the aperture 112, during which operation the front of the card is gripped by a roller 121, after which the roll 117 is lowered and the sequence of operations repeated to form a display card having three loops 122. The card is thereafter advanced to a loading station 123 where vacuum forms 124 embrace and open the film loops 122 to facilitate the endwise insertion of articles 126, after which the loops 122 are heat shrunk by heaters 128. Alternatively, a strip (132) (Fig. 17, not shown), of non-tensilized thermoplastic film, adhered across the aperture (131) on the card (130), is heated, whereupon a bar (135), (Fig. 19, not shown), is projected through the aperture (131) to form a tensilized loop (136).
Patent GB-534349-A (GB)
Title: A manually guided spraying device for paints and other liquids
IPC: B05B9/08
Filed: 1940-02-02
Abstract: 534,349. Paint &c. spraying pumps. BOSCH GES., R. Feb. 2, 1940, No. 2026. Convention date, Feb. 24, 1939. [Class 102 (i)] In a manually guided spraying device for atomizing paints and other liquids, of the type wherein a main pump 9, 10 driven by a motor 6 pumps an auxiliary liquid which drives a second pump which sprays the paint through a nozzle 21, the second pump is constituted by a diaphragm pump the diaphragm 14 and valves 19, 41 of which are disposed within a cup-like auxiliary housing 28 which is inserted in a cavity 26 in the main housing 1 of the device, and which contains the ducts 12, 20 leading from the main pump and to the nozzle. The auxiliary liquid preferably consists of an oil which is not injurious to the paint, the main housing is made of a light magnesium alloy, and the auxiliary housing is made of bronze or steel. The auxiliary housing abuts against a shoulder 27 on the main housing and is locked in position by a tangentially directed pin, the ducts 12, 20 passing through discs 30, 31. The valve 41 is depressible to de-aerate the second pump, and its pin 40 is long enough to move the valve 19 from its seat. The rim of the diaphragm 14 is firmly held between resilient rubber rings 45, 46 which are clamped between two tensioning rings, 43, 44, the ring 43, or both rings 43, 44, having grooves such as 47 to prevent the adjacent portions of the resilient rings being displaced towards the centre of the diaphragm. The ring 44 is forced against a collar 48 on the ring 43, which is subsequently flanged over as shown, and the diaphragm assembly is secured in the auxiliary housing by means of an intermediate member 33 and a screw cap 32.
Patent GB-538445-A (GB)
Title: Improvements in tube cutting machines
IPC: B23D21/00
Filed: 1940-02-02
Abstract: 538,445. Dividing by a single blade. GASCOIGNE, G. H., and KNOX, J. R. Feb. 2, 1940, No. 2030. [Class 83 (iv)] A tube T is cut by rotating it, by hand or by means of a set screw O, sleeve F, belt H, and motor K, while it is engaged by rollers G4, Fig. 2, and a cutting wheel G<SP>1</SP>. The tube is supported by plugs M and by a guide B and stop C<SP>1</SP> which are set up slightly, relative to the sleeve F, to avoid whip. The cutter G<SP>1</SP> is mounted on a slide G<SP>2</SP> urged to the right in Fig. 1 on a slideway G3 by a spring G8 and the rollers G4 on a slide G<SP>5</SP> urged to the left on a slideway of the slide G<SP>2</SP> by a spring G<SP>6</SP>. When the tube is in the position shown in Fig. 1 and is rotating a lever G<SP>10</SP> is pulled in the direction of the arrow X, Fig. 2, and this, acting through its pivot P<SP>1</SP> in the slide G4 to engage the tube and causes the rollers G<SP>4</SP> to engage the tube and then the cutter G<SP>1</SP>, the spring G<SP>8</SP> being adjusted to ensure this order. The slideway G3 is carried by springs and bolts G<SP>12</SP> to allow the cutter to follow irregularities of the tube. When a length has been cut off, the lever G<SP>10</SP> and screw O are released, the tube T is advanced to the stop C<SP>1</SP> and secured by the screw, and the operation repeated. The Provisional Specification describes a machine with a hand operated screw, in place of the lever G<SP>10</SP> and link G", to draw the rollers G<SP>4</SP> and cutter G<SP>1</SP> together and with a cranked handle mounted on the tube T for rotating it.
Patent GB-620796-A (GB)
Title: Improvements in microscopy
IPC: G02B21/14
Filed: 1947-01-22
Abstract: 620,796. Microscopes. MERTON, SIR T. R. Jan. 22, 1947, Nos. 2057 and 9908. [Class 97 (i)] To improve contrast in a microscope, the specimen is placed between parallel partmetallized slide-surfaces or between a cover glass having two such surfaces and a slide, and a suitably dimensioned zone plate having annular transparent and opaque portions is located at the focus of the condenser. The principle of the invention is illustrated in Fig. 2, where 15 is the condenser, 16 and 17 are the part-metallized surfaces, and 18 is the objective. The condenser 15 is illuminated by parallel light of which ray 20 is a part, and by interference due to multiple reflections between the surfaces 16, 17, the light intensity in the focal plane 25 of the objective varies as indicated by the curve 26. The zone plate 14, Fig. 1, has transparent areas designed to cut off all the light corresponding to the minima (or maxima, if desired) in the focal plane 25, and so produce a light or dark ground. Any body placed between the surfaces 16 and 17 and differing in refractive index from the medium therebetween, will cause a shift of the fringe system and so be visible in the eyepiece. The zone plates may be formed photographically and for use with light of two different colours two zone plates, each dyed with a dye absorbing light passed by the other, are cemented together.
Patent GB-159398-A (GB)
Title: Improvements in micrometer measuring devices
IPC: G01B3/24
Filed: 1920-01-22
Abstract: 159,398. Brown, R. J., and McIntosh, J. G. Jan. 22, 1920. Linear-dimension gauges. - An improved measuring-apparatus of the kind in which a vertically sliding head is mounted above a fixed baseplate ccmprises a cranked bar 9, 10 forming the moving head and having across the open side of the crank a bar 12 with two racks, one to operate a pointer 18 and the other to engage a rack segment on a lever 28 for manipulating the apparatus. A spring threaded on the pointer spindle keeps the pinion 16 pressed towards the rear face of the front jaw 21 of the bracket in which the pointer spindle is journaled.
Patent GB-781608-A (GB)
Title: Method and apparatus for the optical examination of continuously advancing strip material
Inventor: WAINWRIGHT HARRY VERNON
IPC: G02B21/00
Filed: 1955-01-25
Abstract: 781,608. Optical gauging. DUNLOP RUBBER CO., Ltd. Jan. 9, 1956 [Jan. 25, 1955], No. 2150/55. Class 106 (2). Continuously advancing strip material 1, e.g. rubber tread stock for tyres, is passed over a roller 2 and its profile where it passes over the roller projected by a beam of light from a point source 6 on to a screen 3 lying in a plane parallel to the axis of the roller. The screen 3, which is apertured to permit passage of the material may be held in adjusted positions such as 3a, 3b by stops to vary the degree of magnification.
Patent GB-580096-A (GB)
Title: Improvements in or relating to steering gear for automobiles and the like
IPC: B63H25/10
Filed: 1944-02-07
Abstract: 580,096. Screw-and-nut gearing. DOUGLAS, J. G. Feb. 7, 1944, No. 2184. [Class 80 (i)] In screw-and-nut mechanism the axially translative movement of the nut is applied to a rocker arm by inter-engaging means which prevent rotation of the nut to any substantial degree the said interengaging means having a substantially straight line path during movement of the nut and arcuate movement of the rocker arm. As applied to a steering gear, a nut a mounted on the screw-threaded end b of the steering column d slides in a bore e of a casing c and, at one side, has a recess l engaged by a partly spherical peg k mounted eccentrically on the inner face of a toothed sector j carried by a spindle i rotatably mounted in the rocker arm h on rocker shaft g. The sector j meshes with a toothed gear m secured to the inner face of the casing c with its pitch circle concentric with the axis of the shaft g. In the central position of the gear, the axes of the peg k, spindle i and shaft g all lie on a straight line at right angles to the axis of the nut a. When the column d is rotated, the nut moves axially but is prevented from rotating by the peg k. The gear j rolls upon the gear m causing the spindle i to rotate in an epicyclic manner and, with appropriate dimensions, the axis of the peg k and of the recess l will follow a substantially straight line path parallel to the axis of the nut. The leverage distance from the axis of the peg to that of the shaft g remains substantially constant. The position of the rocker arm h becomes advanced ahead of the peg k and therefore a smaller travel of the nut is required for a given angular movement of the rocker arm. In a modification, the spindle i is of conical form and has a control gear fast with its outer end meshing with a fixed toothed sector secured to the inner face of the cover .plate p. Axial adjustment of shaft g is effected by shims n between the plate p and the casing, or by a pressure-screw. Balls may be circulated in the grooves of screw and nut as described in Specification 490,938.
Patent GB-1536323-A (GB)
Title: Stripping means for sheet working machines
IPC: B23D33/08
Filed: 1977-01-19
Abstract: 1536323 Strippers W E GALE 19 Jan 1977 [21 Jan 1976 3 Feb 1976] 02298/76 and 04149/76 Heading B3W Stripping means, for use with a reciprocable sheet metal punching or slotting tool 1, comprises means 9 for mounting on a fixed part of the punching &c. machine a plurality of stripper arms 14 movable between a rest position shown in solid line in which they are removed from the tool and a working position, shown in broken line, in which they lie in the path of a workpiece tending to follow the return stroke of the tool, the end of each arm being complementary in shape to the tool and lying close to it in the working position. The arms are mounted on fixed rods 9 by spring tongues 11, 12 co-operating with spring blades 13. Each stripper arm may be in two parts, Fig. 3 (not shown), so that when the blade is replaced by a punch, the lower part only of the stripper arms may be replaced by a part 26, Fig. 4, shaped at 28 to fit closely about the punch. The tool is manually operated by linkage and has a return spring 4a, Fig. 1 (not shown).