baber/WOPTO huggingface dataset:
Patent GB-708360-A (GB)
Title: Improvements in and relating to manhole closures in vats and like containers
IPC: F16J13/20
Filed: 1951-12-10
Abstract: 708,360. Pressure resisting doors. BORSARI, E., and BORSARI, A. Dec. 10, 1951, No. 28926/51 Class 123(1) [Also in Group XXV] A closure for a fluid tank, e.g. one containing fruit juices, beer &c. comprises a frame, e.g. a sleeve 112, adapted to be secured in a wall 110 of the tank, a circular, domed, flexible sheet metal door 11 hinged to one end of the sleeve, e.g. by an arm 26 pivoted at 17 to a lug 12 on the sleeve 112, and clamping means, e.g. a bar 40, adapted to be connected to the door 11 and to engage members, e.g. lugs 74, on the sleeve 112 when the door is closed. The sleeve 112 comprises a metal cylinder 122 and a ring 121 integral therewith or secured thereto, the cylinder 112 and ring 121 carrying lugs 138, 114 for supporting the sleeve in the wall 110, which may be of concrete. A nut 132 fixes the door 11 to the arm 26 which is screw-threaded at the end facing the exterior of the tank and carries there a knob 44 which on - rotation acts to draw the door 11 against the ring 121. The extent to which the knob can be advanced along the arm 26 is limited by an adjustable screw in the end of the arm 26. The bar 40 when not engaging the lugs 74 is freely rotatable on the arm 26, as is necessary to open the door 11.
Patent GB-657135-A (GB)
Title: Improvements in systems for operating electric discharge tubes
IPC: H05B41/232
Filed: 1948-11-08
Abstract: 657,135. Supply systems for discharge tubes. MASCIARELLI, C. Nov. 8, 1948, No. 28973. [Class 38 (iv)] A fluorescent lamp or like discharge tube 10 is operated from a transformer 14 which provides a high pre-heating voltage to the filamentary electrodes 11, 11<SP>1</SP> and a high discharge-initiating voltage between the electrode both of which voltages are automatically reduced upon the tube striking. The transformer comprises a core having two elongated limbs 15 carrying primary windings 16, 161 for connection to the source 12, secondary windings 22, 221 axially spaced from the primary winding to encourage magnetic leakage between them, and heater windings 30, 31 located in these spaces. Windings 16, 16<SP>1</SP>, 22, 22<SP>1</SP> are connected together auto-transformer fashion, the tube being connected across the four windings in series. With the tube unstruck the heating windings may deliver 12 volts and the four series connected windings may apply 240 volts across the tube. Magnetic leakage, consequent upon the tube striking reduces these voltages to about 4.5 and 110-118, respectively. A thermal switch may open one of the heater supply leads if the tube fails to strike quickly, so as to provide an additional inductive starting voltage-kick.
Patent GB-207196-A (GB)
IPC: C01B17/04
Filed: 1923-11-16
Abstract: 207,196. Farbenfabriken vorm. F. Bayer & Co. Nov. 20, 1922, [Convention date]. Sulphur.- Hydrogen sulphide is removed from gases and sulphur produced by passing the gases together with air, sulphur dioxide, or both through porous silicic acid (activated silica gel). When saturated with sulphur the silicic acid is extracted with sodium sulphide solution or an organic sulphur solvent such as carbon disulphide, mono- or dichlorbonzene or tetrahydronaphthalene, and the sulphur recovered by crystallization. The reaction is facilitated, when the gas contains only a small quantity of hydrogen sulphide, by the addition of a base such as ammonia or an amine. In one example a mixture of hydrogen sulphide and air is passed through a layer of porous silicic acid when liquid sulphur flows from the reaction apparatus. In a second example generator gas containing 3 grains of hydrogen sulphide per cubic metre is mixed with 1 per cent by volume of air and 0.01 gram of ammonia per cubic metre and the mixture passed through a layer of porous silictic acid. The sulphur which is precipitated in the silicic acid is extracted by means of hot chlorbenzene, and the silicic acid is freed from solvent by means of steam. In a third example a mixture of nitrogen, sulphuretted hydrogen and sulphur dioxide is passed over porous silicic acid. Sulphur accumulates in the latter and is extracted as described in the second example. Specification 146,141 is referred to.
Patent GB-617386-A (GB)
Title: Improvements in or relating to toy helicopters
IPC: A63H29/18
Filed: 1946-09-28
Abstract: 617,386. Toy helicopters. HAYWARD, A. M. Sept. 28, 1946, No. 29045. [Class 4] A toy helicopter consists of a frame 10 made for example of balsa wood and carrying two feathers 11, 12 to form a lower rotor, and an upper rotor 15 carrying feathers 16, 17 and mounted on a shaft 20 passing through the top of the frame 10, the rotors being driven in opposite directions by an elastic motor 18, the lower end of which is attached to the frame 10 and the upper end to a hook 14 on the shaft 20.
Patent GB-816483-A (GB)
Title: Process for making welding rods
IPC: B23K35/30
Filed: 1956-09-24
Abstract: A process for the production of welding rods which deposit metal solidifying as spheroidal graphite cast iron comprises adding to molten cast iron, which would result in gray cast iron, cerium, as metal or as mischmetal, and sodium, inoculating with a graphitizing agent and casting in the form of welding rods.  The amount of cerium should be sufficient to result in welding rods containing not less than 0.10 per cent and up to 0.30 per cent of cerium, and the amount of sodium added should be not less than 0.05 per cent by weight of the cast iron.  The graphitizing inoculant may be added with or after the cerium and sodium addition.  It is stated that when welding spheroidal graphite cast iron, the metal deposited from the rods has the same spheroidal graphite structure as the workpiece.
Patent GB-1042779-A (GB)
Title: Nut assemblies
Inventor: MIDDLEMISS NORMAN
IPC: F16H25/22
Filed: 1964-07-15
Abstract: 1,042,779. Screw-and-nut gearing; wedges. JAMES ARCHDALE & CO. Ltd. July 8, 1965 [July 15, 1964], No. 29164/64. Headings F2K and F2Q. A nut assembly for a screw-and-nut gear, e.g. for a machine tool, comprises coaxial spacedapart nuts 17, 18 mounted for rotation with, but axial movement relative to, a sleeve 13 rotatably mounted in a housing 11, with a thrust bearing 20 between the outer end 17a of the nut 17 and the housing 11, and a thrust bearing 21 between the outer end 18a of the nut 18 and an axially adjustable ring 22 of the housing 11. The face of the ring 11 not engaged by the bearing 21 is inclined to a plane normal to the longitudinal axis of the nut. To eliminate backlash in a acrew-and-nut gear comprising the nut assembly and a fixed lead screw 10, an annular wedge 23 between the ring 22 and the housing 11 is adjusted normal to the nut axis by screws 25, to move the ring 22 and nut 18 towards the nut 17. The shaft of a motor 16 (not shown) drives the nuts 17, 18 through gears 15, 14 and the sleeve 13.
Patent GB-377036-A (GB)
Title: Improvements in photographic lenses
IPC: G02B9/02
Filed: 1931-10-21
Abstract: 377,036. Lenses. LEE, H. W. and KAPELLA, Ltd., 104, Stoughton Street, Leicester. Oct. 21, 1931, Nos. 29181/31, 30563/31, and 1105/32. Drawings to Specification. [Class 97 (i).] In a photographic objective comprising a simple meniscus lens used in conjunction with a diaphragm between it and the image plane, the ratio of the power of the first surface of the lens to the power of the lens is greater than the square of the refractive index of the glass for a wave-length of 3,500 A.U., but does not exceed 3. The refractive index for the sodium line is not less than 1À5. Numerical data are given.
Patent GB-800021-A (GB)
Title: Improvements in or relating to rake wheels
IPC: A01D80/00
Filed: 1954-10-11
Abstract: 800021. Side-delivery rakes. VAN DER LELY, N. V., C. Oct. 11, 1954 [Oct. 16, 1953], No. 29236/54. Class 6(3).  Relates to a rake-wheel for a side-delivery rake of the kind wherein rake-wheels with peripheral tines are mounted in an oblique echelon formation on a frame so that the wheels are driven by ground-contact as the machine advances. According to the invention, each tine is mounted to be capable of resilient deflection about an axis 5 and each comprises a portion 7 which extends forwardly relatively to the* direction of rotation the portion 7 passing into a terminal portion 8 which is cranked to extend rearwardly relatively to the direction of motion. In Fig. 1., the tines are made in pairs by binding a single piece of wire to form a pair of spokes 5 which are secured to a hub 2 by a bolt 4, and which extend non- radially to pass through apertures 6 in a rim 3, where they are bent to form the parts 8 and 9. The rim and hub are not co-planar. In Fig. 2, the rim 22 and hub 21 are interconnected by fixed spokes 24 and the end of each wire spoke is secured to the inside of the rim and thereafter bent at 28, 29 and 31 to form the tine, the portion 27 constituting the pivot-axis 7. Specification 800,022 is referred to.
Patent GB-1511079-A (GB)
Title: Compacted graeseless cosmetic stick
IPC: A61K8/00
Filed: 1976-07-14
Abstract: 1511079 Make - up sticks L'OREAL 14 July 1976 [16 July 1975] 29367/76 Heading A5B A greaseless make - up stick of the chalk type for direct application to the eyelids comprises a powder containing make - up pigments, the powder being compacted while dry and containing 25 to 70% by weight of at least one powder which is a greaseless carrier, said carrier having rounded grains the average diameter of which is from 1 to 20 microns, the grains of the carrier, when compacted at room temperature and under a pressure of 120 bars having a hardness less than that of calcium carbonate compacted under the same conditions. The carrier may be rice starch, corn starch, esterified rice starch esterified corn starch, or a polyamide. The sticks may contain coloured pigment, a filler powder e.g. talc and/or calcium carbonate, titanium dioxide, zinc oxide, kaolin, metallic stearate, bismuth oxychloride, titanium mica, aluminium powder and/or perfume.
Patent GB-805802-A (GB)
Title: Improvements relating to radiant energy image intensifier systems
IPC: G01T1/20
Filed: 1956-09-26
Abstract: 805,802. Examining solids by X-rays &c. GENERAL ELECTRIC CO. Sept. 26, 1956 [Sept. 26, 1955], No. 29398/56. Class 40 (3). [Also in Group XL (a)] In a system for examining a solid specimen 25, comprising a radiant energy source S, a fluorescent screen 20 for converting radiant energy to visible light, and a T.V. camera &c., 23 for detecting the light rays, the screen 20 has a convex surface 22 so curved that any light rays arising in the screen and travelling along a straight line through the source are refracted to pass through the optical centre C of the detector, thus producing a point image on the T.V. screen. The opposite surface 21 is preferably concave, having its centre of curvature at the source S, or alternatively being curved similarly to the surface 22 so that all X-rays &c., passing through the screen traverse substantially the same distance. The fluorescent screen may be a thallium-activated sodium iodide crystal with or without a metallic film 28 on its concave surface to reflect forward light rays travelling back towards the source. In a modification, Fig. 4, the screen comprises a liquid scintillation medium 40 in a container having an optically transparent convex wall 43.
Patent GB-781408-A (GB)
Title: Manufacture of sulphur dyestuffs
IPC: C09B49/12
Filed: 1955-10-14
Abstract: The invention comprises sulphur dyes and a method of making them by acting on a polynitrodecacyclene in presence of chlorsulphonic and with sulphur and a halogen, in succession or simultaneously, or with sulphur chloride.  The products dye cotton brown or khaki shades from a vat or from a sulphide bath.  The examples describe the application of the process to tri-, hexa- and ennea-nitrodecacyclene. Specifications 468,416, 468,627 and 525,039, [all in Group IV], are referred to.
Patent GB-965924-A (GB)
Title: Improvements in or relating to the surface treatment of polyethylene
Inventor: MARTIN LAWRENCE LEE
IPC: B05D3/10
Filed: 1961-08-15
Abstract: <PICT:0965924/C3/1> The surface of a polythene article is treated to improve its bonding properties with ink &c. by providing and maintaining at least for a limited period of time an explosive mixture of gases in contact with the surface, and then detonating said mixture.  In the embodiment shown in Fig. 3 a polythene container 70 is, located within a housing having walls 451, 591 59a1 and an explosive mixture of gases is passed inside and around the container through tubes 68 and 511 respectively. The mixture both inside and around the container is detonated using a sparking plug 551 and venting takes place at a door 621, but not at a door 481 which closes the inlet tube 511.  The explosive mixture may comprise acetylene with air and oxygen or a mixture of hydrocarbon gases with air and/or oxygen.
Patent GB-754629-A (GB)
Title: Zigzag sewing machine
IPC: D05B19/00
Filed: 1954-10-13
Abstract: 754,629. Sewing-machines. SINGER MANUFACTURING CO. Oct. 13, 1954 [Oct. 19, 1953], No. 29483/54. Class 112. Needles, shifting laterally.-A rotary pattern cam 56, removably mounted at the front of the machine arm on a cross-shaft, actuates a follower 51, 45, pivotally mounted at 47, to impart lateral movements by means of a link 43 to one end of a pitman 41 which is connected at its other end to the needle-bar gate 29 through a lever 37. The follower is pressed against the cam by a spring 59, and this action is assisted by a spring 57 engaging the needle-bar gate. The pitman carries a pivoted guide-block slidably engaging an angularly adjustable guide, whereby its lateral movements are given a longitudinal component to move the gate 29, with means for adjusting the amplitude of movement of the gate and for shifting its neutral position within its field of vibration, as described in Specification 733,470.
Patent GB-1023102-A (GB)
Title: Process for production of nitrogen tetroxide
Inventor: NEWMAN DANIEL JOSEPH
IPC: C01B21/36
Filed: 1963-07-25
Abstract: Nitrogen tetroxide is recovered from a gas stream containing water vapour, nitrogen oxides and inerts by scrubbing the gas stream with a liquid dehydrating agent at an elevated pressure up to 150 p.s.i.g. and a final temperature of from 250 DEG  to 350 DEG  F., cooling the gas to a temperature of from 110 DEG  to 150 DEG  F., combining a free oxygen containing gas with the gas stream to oxidize at least a portion of the nitric oxide present to nitrogen dioxide, further cooling the residual gas stream to from -30 DEG  to -50 DEG  F. to deposit solid nitrogen tetroxide and combining the nitric acid solution with the liquid dehydrating agent prior to the scrubbing of the gas stream.  The dehydrating agent may be a solution of magnesium nitrate or sulphuric acid; calcium chloride, calcium nitrate, and potassium nitrate are also mentioned.
Patent GB-320522-A (GB)
Title: Improvements in weighing devices with ticket printing and issuing mechanism
IPC: G01G23/18
Filed: 1928-10-12
Abstract: 320,522. Kraatz, W. Oct. 12, 1928. Printed records, apparatus for giving.-In a weighing device having ticket printing and issuing mechanism operated by a single operating element, a longitudinally-displace able vertical operating-rod on its upward movement causes the ticket to be printed by being pressed against a weight-printing wheel and subsequently, after completed printing, on its downward. movement causes the printed ticket to be delivered and a fresh ticket to be fed into printing position. As applied to a coin-freed personal weighing-machine, the insertion of a coin automatically withdraws a locking lever f from a toothed wheel g and sets in operation an electric motor i. The motor then actuates a shaft l, crank m and vertical operating rod n. The rise of the operating rod rocks a lever q carrying a date-printing wheel r which descends upon the ticket u and presses it against the type wheel a previously set by the weight of the person on the machine. The date is thus printed on one side of the ticket and the weight on the other side. The ticket is carried in a. holder t pivoted on a pin w either alone or together with a ticket magazine v. A spring z returns the holder to its upper position after printing. In order that the date-printing roller r may return quickly to its upper position under the influence of a spring y, the rod n is guided at the point o so that the a upper end p rocks laterally under the influence of the crank m and liberates the lever q immediately after its printing movement. During the downward movement of the rod n a cranked lever 10 and ticket slide 11 are actuated so as to draw a ticket from the magazine and push it onto the ticket holder t thereby ejecting the printed ticket. After one revolution, the wheel g is again locked by the locking lever f.
Patent GB-1395910-A (GB)
Title: Method of and apparatus for gauging the sizes of articles
IPC: G01B11/08
Filed: 1971-06-24
Abstract: 1395910 Measuring dimensions photoelectrically T I (GROUP SERVICES) Ltd 20 Sept 1972 [24 June 1971] 29614/71 Heading G1A In an apparatus for measuring a dimension of an object, e.g. the diameter of a rod 17, in which two substantially mutually parallel beams 8, 9 are produced from a single laser 2, the beams are moved relative to the object and the output from the photo-cell arrangement 15, 16, which output indicates the relative position of the object and the beams, thereby gives an indication of the object dimension. The beam separation is such that there is a range of positions in which the object intersects part of both beams. Relative movement is effected either by rotating a glass block 3 or by passing a plurality of objects in sequence through the beams. The detector circuitry Fig. 13, (not shown) gives an indication if the rod diameter is outside a pre-set range of values. The two beams may be derived by doubling a laser beam back on itself, Figs. 11, 12 (not shown).
Patent GB-942346-A (GB)
Title: Improvements in or relating to clock winding mechanisms
IPC: G04B11/04
Filed: 1961-08-16
Abstract: 942,346. Clocks. KIENZLE UHRENFABRIKEN A. G. Aug. 16, 1961 [Nov. 30, 1960], No. 29647/61. Heading G3T. [Also in Division F2] In a clock having a winding device including a ratchet wheel 5 engaged by a drive pawl carried on a movable pin 7 which is driven so as to cause the pawl to drive the ratchet wheel, the drive pawl comprises a first arm 10, 11 which is rotatably mounted on the pin, and a second arm 12 connected to the first arm and engaging the pin, the pawl being so constructed that the arms are urged resiliently toward the pin to grip the pin between them, an edge 13 of a groove formed in the pin acting on the second arm so that the pawl resiliently engages the ratchet wheel. The pawl is made from sheet spring material. In a modification, the sides of the material forming the first arm are turned up and drilled to take over the pin whilst the second arm engages that side of the pin remote from the ratchet wheel. The pin 7 is carried by a disc which is rotated through a part of one revolution against a return spring 3 by an impulse imparted through a hinged armature 1 of an electromagnet.
Patent GB-165367-A (GB)
Title: Improvements in or relating to boiler furnace fronts
IPC: F23M7/00
Filed: 1920-10-20
Abstract: 165,367. Reid, J. Oct. 20, 1920. Doors; furnace fronts.-In a furnace front of the kind comprising front and back plates a, b with projecting flanges forming the ash-pit flare, c and enclosing an air space e around the firing- hole d, lateral valves f are provided arranged in line, when closed, with the downwardly extending portions of the outer wall of the air space e and the upwardly extending side portions of the flare c, and such valves are pivoted at about the level of the removable bottom n of the firing-opening. The valves control the passage of air to the space e and to the space above the flare c. Openings g admit air to side and top baffles, indicated in dotted lines in Fig. 3, and openings h admit air to the space between the door i and a baffle j attached thereto and comprising diverging side walls connected by an inclined perforated wall, as shown in Fig. 2. The valves f are operated by arms which interlock with the fire-door when the valves are open. Specification 143,147 is referred to.
Patent GB-681783-A (GB)
Title: Removable sub-surface well tools
Inventor: BAKER REUBEN CARLTON
IPC: E21B33/129
Filed: 1950-12-04
Abstract: 681,783. Well packers. BAKER OIL TOOLS, Inc. Dec. 4, 1950, No. 29657/50. Class 85 In a well packer in 'which the operation of the tool is dependent on relative rotation and longitudinal movement between two parts thereof, one of the parts is constrained against movement by a spring bowed drag device engaging the casing, and the drag device is so arranged on the tool that, on continuous rotation of the latter, it is shifted longitudinally thereof to a position in vhich it stops accidental operation of the tool by preventing longitudinal novement between the two parts, and at the same time is either withdrawn from contact with the casing or may freely rotate with respect to the tool so that it is not damaged during continuous rotation of the tool. In one embodiment the two parts comprise a tubular mandrel 10 and a combined ratchet sleeve 30 and sleeve 75 on which one collar 70 of the spring bowed drag device is threaded. The engagement of a clutch 52 between the body 30 and the mandrel 10, and the rotation of the latter in one direction, causes the collar 70 to move upwards over a thread 74 formed on the sleeve 75, until it contacts a shoulder 78 at the upper end of said sleeve and, with the drag device in this position, the tool is lowered into the well; rotation of the mandrel in the other direction causes the collar to move downwards until it clears the thread 74. In this position it may be freely rotated with respect to the tool and at the same time prevents relative longitudinal movement between the two parts since it extends over to abut against a collar 86 on the mandrel and the end of thread 74 on the sleeve. To allow of the small rotation of the two parts for operation of the tool without rotation occurring between the sleeve and the collar, the sleeve is held to the drag device by spring-loaded brake shoes which give when a torque in excess of a certain value exists between the two parts. In a second embodiment the upper collar of the device engages the fixed collar before the lower collar clears the thread on the sleeve so that, on continuation of rotation of the tool, the collar continues its downward movement to elongate the bow springs with consequential inward contraction and disengagement thereof from the wall of the casing and locking of the two parts against relative longitudinal movement. In a third embodiment the lower collar of the drag device is integral with the sleeve whilst the upper collar surrounds and is connected by a keyway to a tubular housing which is provided with an interior thread engaging an exterior thread on the outer rotatable clutch member of a clutch connecting the mandrel with the drill string. Rotation of this outer clutch member causes the raising and lowering of the tubular housing and when said housing is raised beyond a certain extent, the upper collar of the drag device engages a flange on the lower end of the tubular member with an effect as in the second embodiment.