baber/WOPTO huggingface dataset:
Patent GB-285238-A (GB)
Title: Improvements in valves of the self grinding and self centering type
IPC: F16K29/00
Filed: 1927-01-27
Abstract: 285,238. Lees, A. Jan. 27, 1927. Lift valves.-A selfgrinding and centering screw-down valve comprises a hollow-ended spindle O, an external floating compression chamber C, an internal compression spring D, and a loose roundended and flanged central guiding and centering pin P, as shown, and the parts are secured together in sliding connection by means such as screwed ring C<3>. The valve member S is connected to the member C by a slide-in flange S<2>, and is provided with a suitable face S<3> to make a tight joint with a corresponding face B<3> on the cover B<1> when the valve is fully open. In the closing movement of the valve the compression chamber C and valve member S rotate with the spindle 0 by reason of the engagement of ribs C' with slots in the end of the valve spindle; the valve member therefore rotates in contact with its seating S<1>, whilst the spring D is being further compressed, until the end of the spindle jams against the central roundended pin P, when the valve member is forced tightly against its seating S'.
Patent GB-945511-A (GB)
Title: Zirconium silicate stains
Inventor: OLBY JOHN KENNETH
IPC: B28B19/00
Filed: 1961-01-20
Abstract: 945,511. Zirconium silicate; enamel pigments. ASSOCIATED LEAD MANUFACTURERS Ltd., and J. K. OLBY. Dec. 8, 1961 [Jan. 20, 1960], No. 2417/61. Headings C1A and C1M. A zirconium silicate stain is obtained by calcining a mixture of zirconia and silica with minor amounts of an alkali metal halide and a fluoride of chromium, iron, cerium, neodymium, terbium or erbium. The fluorides are present in the proportions 0.5-10% chromium, 1.0- 15% iron, 5-20% cerium, neodymium or erbium, or 0.5-15% terbium. The alkali metal halide is preferably sodium fluoride and is present in the amount of 1.8-9.0%. When chromium fluoride is used the colour of the stain may be modified by the addition of 1.0-20% of bismuth or 0.1-0.5% of phosphorus. All percentages are based on the weight of the zirconia. The example describes a stain being milled for 4 hours with a frit, china clay and water when it was sprayed on to a tile and fired at 1050 ‹ C. Specification 913,834 is referred to.
Patent GB-432277-A (GB)
Title: Improvements in or relating to the production of aliphatic cellulose ethers
IPC: C08B11/22
Filed: 1934-01-24
Abstract: To a crude reaction product containing an aliphatic ether of cellulose and an organic medium is added a dispersing agent adapted to form an emulsion of the said crude reaction mixture and an aqueous medium, and the product is steam distilled.  The alkyl cellulose is obtained as a finely divided, porous solid which is easily purified by washing.  Examples describe the preparation of an alkyl cellulose by treatment of alkali cellulose with solid caustic soda, ethyl chloride, which may be mixed with methyl chloride, or propyl bromide, and benzene or toluene as diluent, in an autoclave.  The product is treated with turkey red oil or sodium oleate and water and then steam distilled, the alkyl cellulose remaining in suspension in the liquid. The process is particularly suitable for the purification of ethers of cellulose with radicals of not more than 4 carbon atoms, e.g. propyl, butyl, vinyl or crotyl cellulose, or mixed ethers, such as methyl ethyl cellulose, methyl butyl cellulose, methyl propyl cellulose, ethyl propyl cellulose or ethyl glycol cellulose.  Other suitable dispersing agents are soaps, alkali salts of petroleum sulphonic acids, naphthenic acids and fatty acids containing more than 4 carbon atoms, sodium lauryl sulphate, salts of alkyl naphthalene sulphonic acids, and other dispersing agents which are effective in alkaline solution.
Patent GB-1488226-A (GB)
Title: Liquid crystal display device
IPC: G04G17/06
Filed: 1976-01-22
Abstract: 1488226 Alpha-numeric display DAINI SEIKOSHA KK 22 Jan 1976 [22 Jan 1975] 2486/76 Heading G5C [Also in Divisions H1 and H2] A liquid crystal display device comprises a display member 4 mounted on one side of a printed circuit board 10, a semi-conductor device 13 mounted on the other side 10c of the board and connecting means 11 connecting the printed circuit to the electrodes (not shown) of the display. Part of the display may be accommodated in a recess 10a into which the semiconductor device 13 may also protrude. The connectors 11 and the printed circuit may be of conductive rubber, the connectors 11 being pressed or moulded in place; or the printed circuit may be etched.
Patent GB-768120-A (GB)
Title: Improvements in and relating to electrical temperature responsive devices
IPC: G01K1/14
Filed: 1955-01-27
Abstract: 768,120. Temperature measurement. GENERAL ELECTRIC CO. Jan. 27, 1955 [Jan. 27, 1954], No. 2520/55. Class 40 (1). [Also in Group XXXVI] A device for measuring the temperature of liquid bearing gases comprises a housing sealed at one end with a pair of conductors, extending through the sealed end to electric temperature responsive means adjacent the other end, held in position by a core of porous insulating material, the housing being provided between its ends with vents for egress of volatilized liquid from the core. In the Figure, the temperature responsive means is a thermocouple 8 formed by the welded junction of the conductors 6, 7 of nickel-chromium alloy (90 Ni: 10 Cr) and nickel-aluminium alloy (95 Ni :2A1: 2 Mn: 1 Si) respectively. The core is e.g. of compressed magnesia or alumina powder, the housing 1, e.g. of stainless steel being swaged after compression. Cable 9, connecting the couple through reference couple 16 to a milliammeter is secured in bush 17. The housing fixed in the gas chamber 2 by means of a flange 4 held between parts 3 and 5 is provided with small holes 17 at least within the chamber. These allow the e.g. inflammable liquid to volatilize before it carbonizes to bridge the porous insulation. Where the part of the housing outside the chamber reaches carbonizing temperature it may also have vents which lead back to the chamber 'to reduce the risk of fire.
Patent GB-1454116-A (GB)
Title: Clean air supply unit
IPC: F24F3/16
Filed: 1974-01-18
Abstract: 1454116 Workbenches CANADA MINISTER OF NATIONAL DEFENCE 18 Jan 1974 [26 Jan 1973] 02534/74 Heading B4X [Also in Division F4] A clean air supply unit for use with a worktable 24 comprises an L-sectioned housing, a fan 20, a high efficiency particle filter 14 and an air inlet opening 16 below the bottom edge of the filter 14, wherein, a flow of filtered air is in use delivered from the filter 14 across the top surface 27 of the table 24 and any unfiltered air entrained by the filtered air flow at the rear of the table 24 is drawn through the opening 16 by the fan 20. A pre-filter may be located downstream of opening 16 and the rate of air flow through opening 16 is controlled by a pivoted damper 17, or by a slide, or by a fixed nozzle or slot. The unit housing includes a main air inlet 18. Side screens having metal frames 31 may be pivotally mounted in spigots 30 in the housing. In another embodiment, the table 24 is replaced by a collapsible table (44) mounted on the front of the housing.
Patent GB-931344-A (GB)
Title: A lifting device for a venetian blind
IPC: E06B9/322
Filed: 1961-01-23
Abstract: 931,344. Raising devices for Venetian blinds. HUNTER DOUGLAS INTERNATIONAL CORPORATION. Jan. 23, 1960 [Jan. 21, 1961], No. 2541/61. Class 20 (3). A lift cord 3 for a Venetian blind is accommodated, as the blind is raised, in a screw-threaded groove 2 formed in the surface of roller 1 which is slidably mounted for longitudinal movement on a hexagonal actuating shaft 9. A wire spiral 4, which is secured in a block 5 attached to the blind head rail, engages in the roller groove to support the roller and to move it in the direction of its length so that the lift cord is fed into the groove as the roller is turned to raise the blind. A cord guide roller is journalled in the block which is held in situ in the headrail by a lip 13 and spring clips 16. Longitudinal movement of the roller is limited by stops 11 and 12 fitted to the shaft 9. The roller groove is sufficiently deep to receive the whole of the lift cord and the blind support and tilt tapes are looped over the outside of the roller.
Patent GB-1076181-A (GB)
Title: Improvements in or relating to photographic type composing machines
Inventor: MAYROUD LOUIS MARIUS
IPC: B41B21/16
Filed: 1963-01-21
Abstract: 1,076,181. Photographic type-composing apparatus. INTERNATIONAL PHOTON CORPORATION. March 23, 1964 [Jan. 21, 1963], No. 2567/63. Heading B6W. Characters are carried on matrix strips located on a continuously rotated drum having apertures 89, Fig. 1, to allow light from lamp 44 to reach characters. Lamp is flashed when selected character passes aperture in shield 132 to project character through lens 154 and optical carriage 158 on to film 84. Successive characters are projected from different parts of aperture so as to be spaced along the film, and the aperture is movable between three positions so as to increase the projection range while allowing only one character to be projected at a time. When the range is exhausted, the carriage 158 is moved one step so that projection is directed on to a further length of film. The characters are carried on short strips connected by elastic bonding means, and characters of different fonts may be carved at axially spaced positions. The drum carries three toothed rings for generating pulses in magnetic heads 91, 93, 95 controlling electronic circuits. The head 95 controls linespacing and carriage-moving motors. The circuits are also controlled by cam members 146, 148, having conductive and insulating segments or alternatively lobes producing magnetic pulses. The point size is altered by rotation of a lens turret to change the lens 154, and the degree of stepping movement of the carriage 158 is dependent on the point size, which is selected by push-buttons. When the carriage is moved, the drum makes a revolution without a flash. Half the drum is used for upper case and half for lower case. In another form, Fig. 19, the carriage is omitted. The film is covered by a shutter band 308 which exposes in turn a number of incremental image areas 320, the images being formed thereon after different numbers of reflections from mirrors 306, 307. The font is selected by axial movement of the drum or alternatively two fonts are exposed simultaneously, a system of mirrors directing light from either into the line of projection, and a shutter selecting the font.
Patent GB-284291-A (GB)
Title: Improvements in internal combustion engine plants
IPC: F02B37/22
Filed: 1928-01-26
Abstract: 284,291. B³chi, A. Jan. 27, 1927, [Convention date]. Motor power plant.-In plant having an internal combustion engine exhausting into a turbine means are provided to keep the temperature of the exhaust gases passing to the turbine above the condensation temperature of the water contained in them when running under low load. In the arrangement shown in Fig. 3, which shows a sixcylinder four-stroke engine 1 exhausting into a turbine 2 which drives a pre-compressor 3, the result is obtained by closing some of the turbine nozzles 10 at no load or at light loads. The valve 11 for this purpose may be actuated by a spring- pressed piston 13 arranged in a cylinder 12 to which air is admitted from the induction pipe 7 by a pipe connection 16. The valve may be actuated by a link connection 20 with the governor 17, and hand adjusting means 30 may be provided. In the application to a two-stroke engine, Fig. 4, the induction pipe 7 is divided into two branches 24, 25, one of whch is closed automatically at no load or at light loads by a valve 11 actuated as described above. The exhaust pipe is divided into two branches 4, 23, both of which may lead to exhaust turbines, or they may lead to different stages of one turbine, or only the pipe 4 through which the hotter gases pass may lead to a turbine. Two rows of inlet and exhaust ports 28, 29 are shown, but in a modification only one row is provided, the induction pipe 7 being suitably branched.
Patent GB-849165-A (GB)
Title: Improvements in or relating to photographic roll film
IPC: G03C3/02
Filed: 1957-01-24
Abstract: 849,165. Photographic roll films. GEVAERT PHOTO-PRODUCTEN N.V. Jan. 24, 1957 [Jan. 27, 1956], No. 2625/57. Class 98(1) A roll-film backing consists of a single ply opaque paper strip laminated on its coloured face with a one or more pre-formed sheets of transparent material. A sheet of transparent thermoplastic material may be extruded from a die slit and immediately laminated with the paper strip. Adhesives or self-adhesive material may be used to unite the sheets. Transparent materials referred to are polyethylene, regenerated cellulose and cellulose acetate. Markings may be applied separately to the paper strips in a contrasting colour, but it is preferred to over print them with a roller in which the markings are engraved, thus colouring and marking the strips in one operation. To provide intimate contact between the margins of the backing and the flanges of a film spool a strip and transparent sheet of equal width may be offset laterally with respect to one another and the uncovered margin of the paper strip left uncoloured. Alternatively the transparent sheet may be of insufficient width to cover either margin of the paper strip.
Patent GB-228888-A (GB)
Title: Apparatus for measuring the human foot
IPC: A43D1/02
Filed: 1925-01-30
Abstract: 228,888. Clarke, H. E. Feb. 9, 1924, [Convention date]. Boots and shoes, measuring for.-A device for measuring a human foot or a boot last both for length and width comprises a frame 1 having a heel plate 6 and a sliding toe plate 16. The toe plate is mounted on a bracket 11 arranged to slide on an inclined rod 10 so that as it is moved along the frame it is also moved outwardly in order to provide for greater width-sizes as the length-sizes increase. A drum indicator 37 is mounted on the toe plate 16, its indications being visible through openings on either side of the device according to whether it is used for measuring a left or a right foot. A sliding plate 23 connected by a spring 27 to the plate 16 contacts with the foot on one side, and a plate 40 having a slide 39 acted on by a spring 44 contacts with it on the other. The slide 39 positions the width indicator 37 through a rack 42 and a. pinion 38. A pivoted lever 46 is provided to hold out the plate 40 while the device is being fitted.
Patent GB-1057653-A (GB)
Title: Acid zinc or cadmium electroplating baths
IPC: C25D3/26
Filed: 1964-01-22
Abstract: A method of obtaining a bright zinc or cadmium electroplate comprises electroplating in a bath prepared by adding one or more compounds selected from water-soluble amide-substituted linear polyalkylene compounds in a total amount of 0.03 - 5% by weight as a brightener to an acidic electroplating bath having a pH value of 0.2 to 6.5 which contains a sulphate, chloride or fluoborate as its main constituent. Particularly suitable compounds of the above group are polyacrylamide and polymethacrylamide and their copolymers; and poly (vinylalkylether / maleic acid amide), poly (ethylene / maleic acid amide), and poly (vinyl acetate / maleic acid amide).
Patent GB-249966-A (GB)
Title: Improvements in the mounting of cartridge type fuses
IPC: H01H85/62
Filed: 1925-01-31
Abstract: 249,966. English Electric Co., Ltd., and Pooley, A. M. Jan. 31, 1925. Fusible cut-outs; bases.-A cartridge type fuse is mounted in a hole in an insulating panel by means of an insulating body located behind the panel and supporting the terminals and connections therefore, the body being in the form of a bridge and being secured to the panel by means of bolts which pass through holes in the panel adjacent the hole which accommodates the fuse cartridge. The insulating fuse cartridge 1 in Fig. 1 passes through the insulating panel 2 and is held in contact with a stud 3 or the like supported by a bridging member 4 and with a metal lining 2 in the cap 6, usually of porcelain. The member 4 together with a metal ring 7, having flanged shoulder 8 and a terminal 10, is secured to the panel by bolts 9, a bolt 11 passing through the member 4 serving as a second terminal. The lower part of the cartridge is of smaller diameter and fits in an insulating cup 12 into which is moulded a thin metal plate 13, the stud 3 passing through this plate and screwing into the head 14 of the bolt to connect the latter to the terminal on the cartridge base. By means of the cup 12 only cartridges having bases below a certain diameter can be inserted. In the form shown in Fig. 3, the lining 21 is screwed into a metal plate 16 instead of into the ring 7, and the plate 16 is secured along with the member 4 to the panel by means of bolts 17 one of which carries terminals 19. The plate 16 is shielded by a part 20 on the cap 6 which may have a spring member arranged inside the lining to hold the cartridge while it is being placed in position in the holder.
Patent GB-196405-A (GB)
Title: An improved method of removing ink stains from paper or cloth
IPC: C09D10/00
Filed: 1922-01-31
Abstract: Ink stains are removed from paper or cloth by applying a solution of 28 gm. permanganate of potash in 18 gm. of 66 per cent sulphuric acid and 1700 litres of water, and then a 35 per cent solution of sodium bisulphate.
Patent GB-1068443-A (GB)
Title: Selvedge forming mechanism in a loom
IPC: D03D5/00
Filed: 1964-01-21
Abstract: 1,068,443. Shedding. J. T. QUINTANA. Jan. 21, 1966 [Jan. 23, 1965], No. 2895/66. Heading D1E. A lino selvedge shedding mechansim for a loom which produces two fabrics has two frames A and B which are in parallel planes perpendicular to the warp direction and each of which carry one set of selvedge warp yarns from each shed. Frame B is linealy reciprocated, but frame B is moved forward by the action of a cam (not shown) on either of projections 16 or 17 which produces a shogging motion of frame A relative to frame B.
Patent GB-1071531-A (GB)
Title: Method and apparatus for producing machine tool controlling magnetic tape directly from drawings
IPC: G05B19/42
Filed: 1965-01-22
Abstract: 1,071,531. Draughting machines. W. H. FENGLER. Jan. 22, 1965 [Jan. 29, 1964], No. 2898/65. Heading G1X. [Also in Division G3] A drawing showing plane, side and end elevations of an object are delineated in black on a white surfaced aluminium drafting table. Photoelectric scanning heads, incorporating Dove prisms, are arranged to synchronously follow selected lines on the views by motor-driven longitudinal screw-drives and transverse rackdrives. Torsional deflection of the screws is avoided by controlling the motor-drives in response to synchro transmitters driven at each end of the screws. The photo-cell position signals are processed in junction panel (104) to provide impulses to a tape recorder (194). Manual control is effected through a panel (222). A styling tape recorder (196) enables a further view to be produced from the present views by replaying a photo-cell by a stylus. Alpha, beta and gamma signals are stated to be derived from the signals in recorder (194) to tangentially position a flat faced cutter. A display (204) shows the instantaneous positions of the photo-cells and the alpha, beta and gamma signal values.
Patent GB-336904-A (GB)
Title: Improvements in cable and the like drums
IPC: B65H75/14
Filed: 1930-01-28
Abstract: 336,904. Mond, A. L., (Vereinigte Stahlwerke Akt.-Ges.). Jan. 28, 1930. Drawings to Specification. Drums.-The outwardly flanged side walls of an iron cable &c. drum have an undulating periphery.
Patent GB-991313-A (GB)
Title: A toy crane
IPC: A63H33/30
Filed: 1962-01-25
Abstract: 991,313. Toys. G. A. MANGOLD, [trading as GAMA GEORG ADAM MANGOLD]. Jan. 25, 1962 [Nov. 11, 1961], No. 2924/62. Heading A6S. A toy crane with a crab comprises cords connected respectively to the load hook and the crab and wound in opposite directions upon two drums respectively fixed and free upon a driving shaft and normally prevented from rotation in the unwinding direction by means of an independently releasable pawl - and - ratchet mechanism, the drums being coupled together by axial movement of one drum. A crane mast 2 fixed to a gear-wheel 3 is mounted on the base-plate of a travelling crane and is rotated by a pinion 4 driven by a hand wheel 5. The mast pivotally mounts an arm 9 and a jib 10 with travelling crab 11 and load hook 36. The cord drums 16, 20 on shaft 14 have crown wheels 18, 20 which are held apart either by gear teeth or by a spring and are engaged by pressing handle 15 on shaft 14 axially. Vertical slides 27, 28 carry pawls 30, 31 controlled by a blade spring, the pawls acting to prevent rotation in opposite directions of the drums. In operation, turning the handle 15 clockwise with the slide 28 depressed lowers the crane hook, and moving the handle 15 axially to couple the crown wheels the crab moves forwardly. Turning the handle 15 anticlockwise with disengaged crown wheels raises the crane hook and by coupling the crown wheels and depressing slide 27 the crab moves inwardly. When both slides are depressed the load falls and the crab moves inwardly.
Patent GB-741831-A (GB)
Title: An improved operating mechanism for lift valves
IPC: F01L1/30
Filed: 1953-02-03
Abstract: 741,831. Valves and valve gear. KELSTON ENGINEERING CO.. Ltd., and BURRAGE, G. W. May 3, 1954 [Feb. 3. 1953], No. 3039/53. Classes 7(2) and 7(6) A poppet valve 7 is actuated by a sleeve 8 mounted for axial sliding movement on the valve stem 6 and carrying a cam follower 18 engaging a cam groove 5 formed in the face of a rotating disc 3, the valve being opened by downward movement of the sleeve 8 to contact an abutment 9 on the valve stem 6 and closed by upward movement of the sleeve acting through a spring 16 on a second abutment 13 on the valve stem. The disc 3 is formed as a gear wheel and the sleeve 8 is guided by two guide lugs 23 projecting from a cover plate 22 closing the valve gear casing 2. The abutment 13 is formed as a sleeve the lower end 27 of which is separated by a clearance 26 from a co-operating shoulder in the sleeve 8, which shoulder limits the movement of the valve under inertia at the end of the opening stroke. In a modification the cam follower 18 is connected to the sleeve 8 through a rocker.