baber/WOPTO huggingface dataset:
Patent GB-1457923-A (GB)
Title: Acrylate microsphere-surfaced sheet material
IPC: C09J7/02
Filed: 1974-04-05
Abstract: 1457923 Tacky adhesive sheets MINNESOTA MINING & MFG CO 5 April 1974 [6 April 1973] 15196/74 Heading B2E A repeatedly usable pressure sensitive adhesive sheet comprises a substrate sheet 10 having bonded thereto a layer of a binder 20, the binder having embedded therein and protruding therefrom inherently tacky elastomeric copolymer microspheres 30 conststing of, (a) 90 to 99.5 wt. % of one or more alkyl acrylate esters at least one of the esters being iso-octyl acrylate, 4-methyl-2-pentyl acrylate, 2-methylbutyl acryla te and sec-butyl acrylate, and aorrespondingly (b) 10 to 0.5% of one or more of the monomers trimethylamine methacrylamide, trimethylamine p-vinyl benzimide, ammonium acrylate, sodium acrylate, N, N-dimethyl-N-(#-methacryloxyethyl) ammonium propionate betaine, 1, 1-dimethyl-1-(2-hydroxypropyl)amine methacrylamide, 4, 4, 9-trimethyl - 4 - azonia - 7 - oxo - 8 - oxa - 9 - decene-1-sulphonate, 1, 1-dimethyl-1-(2, 3-dihydroxypropyl)amine methacrylamide and maleic anhydride. Suitable substrates include transparent polyester, cellulose acetate, p.v.c., or vinyl copolymer films, glass, wood, or urethane cast closed cell foams, or composites of foams or paper with films, or paper with foam. Suitable polyester is biaxially oriented polyethylene terephthalate. A primer may be used for example, to seal a substrate, a. suitable primer being an acrylic ester/acrylic acid copolymer. Suitable binders are urethane resins, epoxy resins, nitrocellulose acrylates, vinyl esters, silicones and microcrystalline wax. Application of the microspheres and the binder is usually carried out simultaneously by spraying or knife, wire-wound bar, or gravure  coating a dispersion of both binder and microspheres. Other suitable primers are (1) for regenerated cellulose substrates; casein, gelatin, various protein glues mixed with rubber latex, (2) for hydrophobic e.g. p.v.c. substrates; a mixture of butadiene/acrylonitrile copolymer and butadiene styrene rubber.
Patent GB-996624-A (GB)
Title: Phase and frequency comparison circuit comprising two rectifying sections
IPC: H04N5/20
Filed: 1962-04-19
Abstract: 996,624. Automatic frequency phase control systems; phase detectors. STANDARD TELEPHONES & CABLES Ltd. April 19, 1962 [April 27, 1961], No. 15210/62. Addition to 958,794. Drawings to Specification. Heading H3A. An automatic frequency and phase control system has a phase detector, as in the parent Specification, producing during out of synchronism, a D.C. output of polarity indicating the sense of the frequency error between the input sync. pulses and the sawtooth wave produced by differentiating the flyback pulses from the controlled timebase generator. Further the sync. pulses are applied, in push-pull, over a shunt potentiometer with variable centre tap connected to earth, so that the mean value of the D.C. outputs of opposite polarity can be adjusted to coincide with the output voltage produced in the absence of sync. pulses, by the sawtooth wave alone. The output circuit may also have a resistor with variable centre tap so that this voltage (with absence of synchronizing pulses) may be adjusted to coincide with an operating point of the frequency correcting circuit.
Patent GB-402765-A (GB)
Title: Improvements in or relating to saws
IPC: B27B17/14
Filed: 1932-05-28
Abstract: 402,765. Portable-saw machines; tree felling. PITT, E. A., (Representative of PITT W.), 21, Freeman Road North, Leicester. May 28, 1932, No. 15217. [Class 145 (ii).] A portable saw for tree felling, cross-cutting, &c. comprises end plates 2, Fig. 1, preferably of aluminium, connected by a guide bar 8 for the cutter which comprises a chain 1 or band saw and is driven by two electric motors 3, one mounted on each end plate. The bar 8 extends right up to the sprockets 7, and its edges may be provided with steel balls or discs to minimise friction. The bar 8 is attached to the plates 2 by bolts 10 and is slotted at 19 to permit tensioning of the cutter, which is effected by a screw 22 mounted in a bracket on the bar and bearing against the end member. The end members 2 each carry one or more handles 15 preferably of aluminium, and are slotted to form grips 18. The sprockets 7 may be driven through reduction or other gearing. In a modification, Fig. 4, the end plates 2 are connected by a bar 11 which does not act as a guide for the cutters ; sprockets may be freely mounted between the runs of the chain to support the cutting run. Tensioning of the cutter is effected by a screw 22 mounted on one end plate 2 and bearing against the bar 11 which is slotted at 24. The saw may be supported during the cut by a suitable frame, or may be mounted on the work. The saw may be mounted upon a frame for use as a stationary sawing machine. Reference has been directed by the Comptroller to British Specifications 245,385, [Class 145 (ii), Wood, Working], 373,901, and U.S.A. Specification 1,825,164.
Patent GB-559228-A (GB)
Title: Improvements in or relating to telephoto objectives
IPC: G02B13/02
Filed: 1942-06-01
Abstract: 559,228. Telephoto objectives. KODAK, Ltd. June 1, 1942, No. 15314/43. Convention date, Aug. 28, 1941. Divided out of 559,203. [Class 97 (i)] The rear, negative, member of a telephoto objective having a compound, positive, front member, comprises a negative element and a positive element, the refractive index of the negative element exceeding that of the positive element by at least .05, and the sum of the dispersive index of the negative element plus 200 times its refractive index exceeding the sum of these quantities for the positive element by at least 28. The front member may comprise more than two elements and include a negative element cemented to the front of a positive element, the refractive index of each negative element thereof exceeding that of each positive element by more than .05; the rear member may be meniscus and be spaced from the rear principal point of the front member by more than the axial thickness of either member and by less than .85 times the focal length of the front member, the focal length of the rear member being numerically less than 1.05 times that of the front member. The front member may consist of an element of one sign cemented between two elements of the opposite sign, and the Figure shows a front member consisting of a positive element 2 cemented between two negative elements 1, 3, wherein the sum of the dispersive index of the positive element plus 60 times its refractive index exceeds the sum of the average of the dispersive indices of the negative elements plus 20 times their average refractive index by less than 78. Complete data for this and another example are included in the Specification. Specification 559,203 is referred to.
Patent GB-984890-A (GB)
Title: Improvements in or relating to position indicators
IPC: G05D1/12
Filed: 1962-04-19
Abstract: Semi-conductor devices are described which consists of a disc of N-type germanium containing three grain boundaries radiating symmetrically from the centre of the disc (and thus including 120 degrees angles).  Germanium tricrystals for use in such devices can be prepared by crystalline growths from three single barshaped seeds of square cross-section.  A 30 degrees relative misorientation is introduced between each pair of seeds by relative rotation of the seeds about the growth direction.  The tricrystal is then grown by either a horizontal zone melting method or by the Czochralski method. A tricrystal thus prepared may be used as a seed for future growths. U.S.A. Specification 2,740,901 is referred to.
Patent GB-659656-A (GB)
Title: Improvements relating to cleaning tools for suction cleaners
IPC: A47L9/06
Filed: 1949-06-09
Abstract: 659,656. Suction cleaner nozzles. HOOVER, Ltd. June 9, 1949, No. 15383. Convention date, June 10, 1948. [Class 8(i)] A suction cleaner nozzle comprises a body 14, Fig. 3, providing a main mouth 15 outside of which is mounted a brush 42 which is rendered inoperative when covered by a pivoted flap 19 and rendered operative when the flap covers part of the main mouth 15 to provide a secondary mouth 35. The flap 29 is pivoted by a flexible sealing strip 25 and projects downwards on lifting the body 14, the flap being then positioned by forward or rearward movement of the body. The secondary mouth 35 is formed by a slot in the flap. In a modification the brush is located in front of the nozzle body 55, Fig. 9, and the flap 60 is of such size as to leave a space 70 between it and the opposite lip 57 to form the secondary mouth. The bearing surfaces of the nozzle are curved to enable it to be rocked to assist springs 44 in contacting the brush 42 with the floor.
Patent GB-498593-A (GB)
Title: A process and apparatus for uniformly coating printing cylinders with a light sensitive layer for the photomechanical manufacture of printing forms
IPC: G03F7/18
Filed: 1937-06-03
Abstract: <PICT:0498593/III/1> A printing cylinder is coated with a light-sensitive layer, for the photo-mechanical manufacture of a printing form, by slowly rotating the cylinder while partly submerged in, or in contact with, a body of the coating liquid contained in an open receptacle, the cylinder being kept at such an elevated temperature that the coating dries on the emerging portion of the cylinder surface immediately after this portion leaves the coating liquid.  The heated cylinder is preferably arranged horizontally, and is rotated at a speed of about one revolution in 5 minutes. The coating liquid may be in a pan floating on heated water in an outer receptacle, and contact between the cylinder surface and the coating liquid may be made and broken by altering the level of the water. Alternatively, an apparatus, such as is shown in the Figure, may be used in which a narrow channel 2, extending along the whole length of the heated cylinder 1, is supplied with coating liquid from a constantly fed reservoir 5 provided with overflow tubes 8.  The channel 2 may be provided with bevelled edges 9 and with a removable cover 3.  The reservoir 5 is enclosed within a casing 10, fed with warmed water and supported on adjusting screws 12.  Contact between the coating liquid in the channel 2 and the cylinder may be made either by lowering the cylinder or by raising the casing 10 by means of the screws 12. Wipers 15, 16 remove dust from the cylinder prior to coating, and a guard 21 prevents access of dust to the coated cylinder.  According to the Specification as open to inspection under Sect. 91, the cylinder may be held in an inclined position during coating and/or separation from the coating liquid, and higher speeds of rotation may be employed, the coating not necessarily drying immediately on emergence of the cylinder surface from the coating liquid.  This subject-matter does not appear in the Specification as accepted.
Patent GB-313730-A (GB)
Title: Improvements in or relating to advertising and the like signs
IPC: G09F1/14
Filed: 1928-05-25
Abstract: 313,730. Berry, H. H., and Markham, W. J. May 25, 1928. Signs, supporting.-A sign is supported by two or more resilient brackets adjustably secured to the frame of the sign. As shown in Fig. 9, the strip or bar metal brackets 19 are formed with a slot 21 to engage pins 18 on the frame.
Patent GB-124673-A (GB)
Title: Improvements in Pads used on Crutches, Artificial Limbs and Sticks.
Inventor: LYNDE FREDERICK CHARLES
IPC: A61H3/02
Filed: 1918-09-26
Abstract: 124,673. Lynde, F. C. Sept. 26, 1918. Ferrules or tips.-Relates to pads for the ends uf crutches, sticks, and artificial limbs. The pad is made of rubber and is constructed with a socket a to receive the end of the crutch &c. The part a<1> of the pad may be provided with a non-slipping tubular insertion-piece B, which may consist of a number of layers of fabric solutioned together and vulcanized before or after insertion. Or the part a<1> may be formed with an air cavity D; or with both a tubular insertion and an air cavity. One or more inexpansible rings C may be applied to prevent spreading and retard wear. A metal &c. plate d may be placed at the bottom of the socket a. A flanged metal plate a<2> may be embodied in the pad. Reference is made to Specification 120,106.
Patent GB-203064-A (GB)
Title: Improvements in or relating to stair-rod eyes
IPC: A47G27/06
Filed: 1922-06-06
Abstract: 203,064. Milborne, F. June 6, 1922. Stair-rod eyes are constructed of a single piece of wood a the ends of which are bevelled off at 45‹ and an open groove is formed in the back to hold the stair rod b. Holes are bored in the ends to receive the fixing screws c.
Patent GB-496676-A (GB)
Title: A process for the manufacture of isobutene or derivatives thereof
IPC: C07C5/27
Filed: 1937-06-07
Abstract: Isobutene is obtained by contacting butene-1 or 2 or hydrocarbon mixtures containing the same at about 250-550 DEG  C. and pressures not exceeding 10 atmos. with hydrates of phosphorus pentoxide or trioxide, viz. ortho-, meta-, and pyro-phosphoric acids and phosphorus acid, or compounds thereof with other acidic oxides such as phospho-tungstic or molybdic acids or complexes with silicic acid. The catalyst may be applied to carriers, e.g. carbon, silica gel or kieselguhr.  An active catalyst is made by heating a mixture of phosphoric acid and kieselguhr up to about 300 DEG  C.  Isomerization is preferably effected in the presence of water vapour.  The optimum temperature is usually about 325 DEG  C., pressure being normal or slightly above or below.  The isobutene formed may be separated and converted into derivatives or the reaction mixture treated directly, if desired after separation of the small amounts of liquid polymers, e.g. by polymerization to gasoline or lubricants or condensation with other hydrocarbons or derivatives.  Thus the reaction mixture may be contacted at about 150-250 DEG  C. and above 10 atmos. with a phosphoric acid catalyst to produce motor fuels which may be hydrogenated.  In an example, butene-1 and 2 are passed at 325 DEG C. and 1 atmos. with an equimolecular quantity of water vapour over orthophosphoric acid on kieselguhr.  The gaseous product may be polymerized with the same catalyst at 160 DEG  C. and 40 atmos. Specification 340,513 is referred to.
Patent GB-200080-A (GB)
Title: Improvements in apparatus for drying photographic films or strips of material
IPC: G03D15/02
Filed: 1923-06-18
Abstract: 200,080. Chanier, G. L., and Adatte, A. L. June 28, 1922, [Convention date]. Drying materials in long lengths. -Photographic film-drying apparatus comprises a pair of drums fcrmed with peripheral passages through which the film is passed in contact with a drying medium, the axes of the drums being disposed in parallel planes and at an angle to each other so as to allow the film to pass smoothly from one drum to the other. The drums consist of a series of flanged wheels 24, Fig. 3, freely mounted upon sleeves 17, 18 secured to laterally adjustable bearing-blocks 12, 13 carried by the front plate 7 of the casing, this plate being adapted to be removed as shown in Fig. 2, so as to facilitate the inspection and repair of the film should it become torn or broken. The film passes into the casing through an aperture 36, Fig. 3, over guide-pulleys 37, 39, Fig. 1, and thence around the passages formed on the lower and upper drums by flanged wheels until it issues from the casing through an aperture 43 and is wound upon a reel 45. Air is forced by a fan 3 into the passages on the drums through nozzles 59, 60, which are connected to the main 4, and are provided with guides 61, Fig. 2, for directing the air into the passages. The moist air passes out of the casing through openings 63, 64 between the film and the casing. The peripheral surfaces of the flanged wheels are covered with felt or other cushioning material.
Patent GB-1179603-A (GB)
Title: Method and Apparatus for Printing Multiple Images on Photographic Raw Stock
Inventor: JEFFEE SAUL
IPC: G03B27/08
Filed: 1967-04-06
Abstract: 1,179,603. Photographic printing apparatus. MOVIELAB Inc. April 6, 1967, No. 15841/67. Heading G2A. A method of printing multiple images from a single negative film strip 16 on to photographic film raw stock 10 having a width at least twice that of the negative film strip 16 comprises feeding the raw stock 10 and film strip 16 continuously past a plurality of positive stations, the raw stock 10 and strip 16 being brought into contact at each positive station and between the first and second positive stations effecting a relative lateral displacement of the film strip 16 and raw stock 10 so that at the second station the negative is printed on to the raw stock alongside the first image strip. As shown on Fig. 1 the strips 10, 16, are in contact at the first positive station with the strip 16 adjacent one edge of the strip 10. The strip 16 is laterally displace to lie adjacent the other edge of the strip 10 at the second positive station 48 by means of a pair of rollers 54, 56, which direct the strip 16 along a helical path. The lengths of film strip and raw stock between the stations 46, 48, are equal so that the printed images are aligned along the length of the raw stock. The raw stock 10 passes from the station 48 to two further stations where a sound track negative strip is brought into contact in two laterally displaced positions in a manner similar to the feeding of the negative film strip 16. In a second embodiment Fig. 7, the lateral displacement is effected by passing the raw stock 106 round a pair of roller 152 which are arranged at an angle to the plane of the strip 106 at the positive stations, 116, 118. Each roller 152 comprises two frusto-conical sections joined at their narrow ends, and is mounted by a ball and socket joint so that said angle may be adjusted to vary the degree of lateral displacement of the raw stock 106. Pairs of rollers 338, 340 tension the raw stock while further roller pairs tension the negative film strip 124. The roller pairs are adjustable so as to permit feeding of raw stock and negative film in both directions through the apparatus and also to facilitate initial threading of raw stock and negative film. Vacuum cleaning devices are arranged in the path of the negative strips ahead of the printing stations. Provision is made for the printing of an endless negative film.
Patent GB-1522561-A (GB)
Title: Hydraulic turbines
IPC: F03B17/00
Filed: 1977-06-28
Abstract: 1522561 Hydraulic turbines J A BUCKLE 28 June 1977 15867/76 Heading FIT An hydraulic turbine has a bladed wheel whose periphery projects into an upright conduit placed in a body of water, a compressor introducing air into the conduit above the wheel to induce an upward flow of water in the conduit to drive the turbine. Water issuing from the top of the conduit falls back into the body of water. The compressor may be driven by any means and is coupled by a belt and pulleys to the turbine.
Patent GB-1188813-A (GB)
Title: Functional Fluid Compositions
IPC: C10M169/00
Filed: 1967-04-06
Abstract: 1,188,813. Lubricants. MONSANTO CO. 6 April, 1967 [6 April, 1966], No. 16917/67. Heading C5F. A lubricant or hydraulic fluid comprises I. A fluid selected from A. (i) polyphenyl ethers (ii) polyphenyl thioethers and (iii) mixed polyphenyl oxy-thioethers B. (i) synthetic esters (ii) alkylthiophenes and C. mixtures comprising a major proportion of dihalogenated diphenyl ethers and sulphides and a minor amount of a blending agent selected from (i) halogenated lower alkyl benzenes (ii) halogenated benzene where the halogen is chlorine or bromine (iii) monohalogenated diphenyl ethers (iv) chlorinated biphenyls, and II. A corrosion reducing additive selected from A. a compound represented by the formula wherein X is H, -NH 2  or -OH and at least one of X is -NH 2  or -OH, Y is -NHR<SP>1</SP> where R<SP>1</SP> is hydrogen or-C#N, and G, G<SP>1</SP> and G<SP>11</SP> are each carbon or nitrogen, at least one of G<SP>1</SP> and G<SP>11</SP> being carbon and at least two of G being carbon, Z is hydrogen or hydrocarbon, n is 1 or 2, m is 1 or 2 and the sum of n+m is equal to the number of G groups that are carbon, p is 200 or 1 and is zero when G<SP>11</SP> is nitrogen and B. a compound of formula where R, R 1  and R 2  are H, OH or NH 2 , at least one being OH or NH 2 . Exhaustive lists of specific base oils are given. The additives A and B specified are indazoles, pyrimidines, indoles, indazolines, and triazines (specific examples are given). The composition may also contain polymethacrylates, alkylated polystyrene, polyglycols and ethers thereof and silicones.
Patent GB-652445-A (GB)
Title: Improvements in devices for the introduction of radio-active or other gases into liquids
IPC: B01F3/04
Filed: 1948-06-14
Abstract: 652,445. Mixing in flow. GRABIANKA, S. A. June 14, 1948, No. 15934. [Class 86] [Also in Group VI] An apparatus for introducing radio-active or other gases into liquids has an injection pump 10, fed with liquid from an adjustable constant level reservoir 1 which draws activated gas through a pipe 6 from an activator S. The liquid and gas pass through an elbow 11 and tube 12, where intimate contact is assured, to a mixer 14, where the level of the activated liquid is kept constant by the level of an outlet pipe 24 leading to a reservoir RN. Unabsorbed gas returns to the activator S by a tube 18 having a trap 19 for liquid, and air as a carrier gas can enter through an hydraulic seal 20, 22, 21. Glass parts fused together are used as far as possible in view of the character of the materials employed.
Patent GB-221030-A (GB)
Title: An improved valve-seating tool
IPC: B23C3/05
Filed: 1923-06-20
Abstract: 221,030. Badcock, F., and K. B. Patents, Ltd. June 20, 1923. Portable turning-apparatus; drills and cutters. -A tool for trueing valve seatings comprises a body 10 slotted to receive a number of cutters 15 which are clamped by screws 17 acting through plungers 18 bevelled to conform with the upper surfaces of the cutters. The bottoms of the slots 14 may be inclined at 45‹ to the tool axis and the cutters have cutting edges at right-angles to their length. In order to assist in imparting a smooth finish to the seating the cutting edges of alternate cutters may be set back as shown at 21 or some of the slots may be displaced from a truly radial position. The body is provided with a recess 22 and the operating spindle 24 rotated by a spanner applied to the portion 27 is fitted with a ball 25 which enters the recess 22 and carries a pin engaging one of the slots 23, pressure being applied by means of the handle, 28. The tool is located by means of a spindle 29 engaging the valve guide, a series of such spindles being provided for guides of different sizes. The cutter may be set by means of a gauge, Fig. 4, having a graduated conical surface 30 and a tubular portion 31 to receive the locating spindle- 29.
Patent GB-907593-A (GB)
Title: Improvements relating to filtering apparatus
Inventor: DARNBOROUGH CATHERINE MARGARET
IPC: B03C3/155
Filed: 1959-05-11
Abstract: 907,593. Electrostatic precipitation. COURTAULDS Ltd. May 10, 1960 [May 11, 1959], No. 16016/59. Class 39 (1). Filtering apparatus for removing solid particles from gases, such as dust or smoke from air, comprises a container 1 provided with a gas inlet 2 and outlet 3 between which there is a filter element comprising a textile fabric 5 pervious to the gas and polarized by an ionizing potential source so that solid particles entrained in the gas are repelled to an earthed electrode away from and not through the fabric. The earthed electrode may be the container walls. The filter element comprisse a fabric cylinder 5 suspended from header plate 6 and a metal spring 7 suspended from and insulated from the header plate. Two examples are given with bags of polythene and viscose rayon filaments respectively, the dust being of magnesium carbonate. The fabric is positively or negatively charged and there may be a plurality of fabric-spring assemblies. The fabric may be of metal or have metallised threads or may have a metal grid or gauze support or a graphite coating over the whole surface and may in general have a natural or synthetic fibre. The dust may be scraped off the casing 1 or washed off by water flow.