baber/WOPTO huggingface dataset:
Patent GB-518004-A (GB)
Title: Improvements in or relating to photographic cameras employing polarizing filters
IPC: G03B17/12
Filed: 1938-08-24
Abstract: 518,004. Photo-electric apparatus. KODAK, Ltd. Aug. 24, 1938, No. 24853. Convention date, Aug. 24. 1937. [Class 40 (iii)] [Also in Group XX] The desired angular position of a polarizing filter rotatably mounted about the optical axis of a camera objective is indicated, e.g. in the field of view of the finder, by the needle of a photo-electric exposure meter mounted on the camera and receiving light passing through said filter or through a separate filter rotatably coupled therewith. The meter may automatically adjust the diaphragm of the camera objective. As shown in Fig. 1, the exposure meter 13 is mounted on the camera 10 adjacent to the objective 11, and the meter needle 14 projects into the field of the finder 15. Coupled polarizing filters 20, 21 are mounted in front of the objective and meter respectively. For strong lighting, the vibration axes of the filters are maintained parallel to each other, and the setting is correct when the meter shows a minimum reading. For weak lighting the axes are perpendicular to each other, and the setting is correct when the meter shows a maximum reading. The cell circuit includes rheostats 17, 18 controlled by the diaphragm and shutter setting elements. As shown in Fig. 4, the polarizing filter 45 is rotatably mounted in front of the objective 40 which is surrounded by a photo-electric cell 42 receiving light through the filter and coupled to a triple galvanometer 43 the needles of which support and automatically adjust the objective diaphragm blades 44. An indicating needle 46 may be arranged to project as before into the view finder field. Specification 493,397, [Group XX], is referred to. The Specification as open to inspection under Sect. 91 describes also a camera attachment comprising a polarizing filter and exposure meter co-operating in the above-described manner. This subject-matter does not appear in the Specification as accepted.
Patent GB-424895-A (GB)
Title: Improvements in and relating to metallic vapour and gaseous electric discharge devices
IPC: H01J61/10
Filed: 1933-09-07
Abstract: 424,895. Discharge devices. FREEDMAN, P., 6, Hillside Gardens, Highgate, London. Sept. 7, 1933, No. 24857. [Class 39 (i)] A vapour or gas discharge device, such as a lamp for television purposes, has one main electrode 6 located within a vitreous capsule 7, which is provided with an extension 8 in the form of a flattened cylinder. The electrode 6 consists of a cylinder which may be conically tapered at one or both ends, a spiral or a wire brush, and the other main electrode 9, which is supported on the insulated wire 10, consists of a pointed rod or block, a bundle of wires or a block provided with sharp edges. One or both of the electrodes may be coated with, or be formed of an alloy incorporating barium or strontium. The filling may consist of one or more of the gases or vapours neon, helium, argon, mercury, sodium, cadmium and hydrogen and the colour of the light may be modified by the introduction into the vessel of titanium chloride and thallium chloride, and by the use of anuranium glass or a yellow glass which is preferably fluorescent. When auxiliary electrodes are provided, they may consist of plates or strips or filaments, which are coated with or contain the oxides of barium and strontium, and are located on the exterior of, or are wholly or partly embedded in, the flattened faces of the extension. A plate-shaped auxiliary electrode 11 partly surrounds the extension 8 and is enclosed by a vitreous member 12 in the form of a flattened cylinder which at one end is joined to the extension 8 and at the other end is bell-shaped. An auxiliary electrode may be connected within the device directly or through a resistance to a main electrode or it may be connected to an external contact.
Patent GB-185960-A (GB)
Title: Apparatus for giving visual indication of smoke from furnaces, specially adapted as a guide to combustion when burning liquid fuel and the like
IPC: G01N21/29
Filed: 1922-05-12
Abstract: 185,960. Wauchope, H. May 12, 1922. Smoke indicators.-Apparatus for giving visual indication of smoke from furnaces, internal-combustion engines, and the like, of the kind comprising a view tube A having inlet and outlet tubes D, E, a lamp B or other source of light at one end, and a transparent partition C at the other, has the inlet tube D provided with a threeway cock F which may be closed or opened to allow atmospheric air or the gases to be viewed to enter the view tube A. Specification 8686/99 is referred to.
Patent GB-386357-A (GB)
Title: Improvements in paper cutting machines
IPC: B26D1/38
Filed: 1931-09-04
Abstract: 386,357. Cutting paper webs. JOHNSON, L. S. and VICKERY, F. W., 4, Lambeth Palace Road, London. Sept. 4, 1931, No. 24893. [Class 31 (i).] In machines for cross-cutting paper, the rotary blade 4, mounted on a rigid carrier 3, is weakened at the part 6 to allow it to bend, not merely as a whole but at every point of its length more easily away from than towards, a fixed blade 5. In a modification, the moving blade 8 cooperates with a fixed blade 9, pivoted on a nose 10 and supported against the urge of springs 12 by bolts 13. Specification 189,957, [Class 31 (i), Cutting and severing machines &c.], is referred to.
Patent GB-1284475-A (GB)
Title: New substituted diethynylcarbinols
IPC: C07C/
Filed: 1970-05-22
Abstract: 1284475 Substituted diethynyl benzyl alcohols ELI LILLY & CO 22 May 1970 [26 May 1969 12 March 1970] 24985/70 Heading C2C The invention comprises compounds of the Formula I: where R is a halogen atom or a C 1-4  alkyl, C 1-3  alkoxy, halo-C 1-3 -alkyl, cyano or phenyl radical. They are prepared by reacting ethynyl magnesium bromide with an appropriate ethynyl phenylketone in tetrahydrofuran or by reacting an appropriately substituted benzoic acid with sodium acetylide in the presence of acetylene and liquid ammonia. Compounds I act as soil fungicides. 4-Methylbenzoic acid, phenyl ester is prepared from phenol and 4-methylbenzoyl chloride.
Patent GB-666539-A (GB)
Title: Mixtures of interpolymers
IPC: C09D151/00
Filed: 1949-09-29
Abstract: An interpolymer of a styrene, a diallylic fumarate and an allylic alcohol is plasticized by a copolymerizable interpolymer of diallyl or dimethallyl fumarate and an alkyl acrylate, the alkyl group having 2 to 8 carbon atoms, to provide a coating composition which may be baked to a flexible, insoluble, infusible film.  The ternary interpolymer is prepared as described in Specification 665,269 from styrene, p-chlorostyrene or p-methyl-styrene, diallyl or dimethallyl fumarate, and allyl or methallyl alcohol.  The acrylic ester interpolymer is prepared from a mixture containing 5 to 50 mol. per cent of diallylic fumarate and 95 to 50 mol. per cent of alkyl acrylate. Polymerization to the soluble, fusible stage is effected in the presence of a solvent, e.g. xylene or toluene, and a catalyst, e.g. acetyl, benzoyl, acetyl - benzoyl and succinyl peroxides and tert-butyl hydrogen peroxide, at refluxing temperature.  The interpolymers may be blended without isolating them, using solvents such as xylene, acetone, ethyl acetate and diacetone alcohol.  The weight ratio of the ternary polymer to plasticizer is from 10 : 90 to 90 : 10.  After applying to a surface, the coating is baked in air at temperatures of from 200 DEG  to 600 DEG  F.  A small quantity of a manganese drier, e.g. the naphthenate, is preferably included in the coating solution.  Pigments, e.g. titanium dioxide, lithopone, antimony oxide and lead chromate, may also be added.
Patent GB-481534-A (GB)
Title: Improvements relating to the construction of goods-carrying and other bodies for vehicles
IPC: B62D33/02
Filed: 1936-09-14
Abstract: 481,534. Vehicle bodies and suspensions. WEAKLEY, F. J. Sept. 14, 1936, No. 25041. [Classes 108 (i) and 108 (ii)] A vehicle body comprises cross members of channel form each carried by a pair of metal pillars adapted to be attached to the chassis members. As shown the cross members 3 for supporting the floor &c. are supported by pillars 2 each formed of two facing channel members with an interposed plate 2A and provided with a foot plate 2D resting on the chassis members 1. The upper ends of the pillars, which are formed of metal blanks, are provided with slots or grooves 2c in which the cross members 3 seat. Body pillars 10, Fig. 6, may project into and be supported by the members 3 which may have lugs 3B at each end to receive a hinge pin 3c for hinge straps 5 of side doors or flaps 6, 6A the hinge straps 5 of those flaps likely to damage the wings &c. being provided with slots 5A for releasing purposes. The pillars 2 permit of the cross members 3 being connected to chassis members of any contour.
Patent GB-1105426-A (GB)
Title: Thioanilides and their preparation and conversion to n-phenylamidines
IPC: C07D277/56
Filed: 1966-06-06
Abstract: Novel compounds of the formula <FORM:1105426/C2/1> where R is a five-membered heterocyclic radical containing nitrogen and suphur and each of R1 and R2 is a hydrogen or a halogen atom or a C1- 5 alkyl, phenyl, halophenyl, thienyl, C1- 5 alkoxy, C1- 5 alkylthio, phenoxy, or phenylthio radical, provided that when both R1 and R2 are other than halogen, at least one of R1 and R2 is hydrogen, are obtained by treating compounds of the formula <FORM:1105426/C2/2> with sulphur at a temperature of 100 DEG -200 DEG  C. The thio-anilides thus obtained may be treated with ammonia or an ammonium salt to form the corresponding amidines.  The starting compounds for the above process may be obtained by treating a compound of the formula <FORM:1105426/C2/3> with a compound of the formula ClCH2-R, in which formulae R, R1 and R2 are as defined above.
Patent GB-901387-A (GB)
Title: Process and apparatus for treating sheet materials and the sheet materials produced thereby
IPC: B31F1/07
Filed: 1960-07-19
Abstract: 901,387. Crinkled paper etc.; laminates. SCOTT PAPER CO. July 19, 1960 [July 31, 1959], No. 25105/60. Classes 96 and 140. Paper, e.g. towelling or toilet tissues, paperboard, or foil, or composite sheet material, &c., is passed between ribbed rollers, the ribs being resilient, e.g. of rubber or plastic, and the ribs of one roller crossing those of the other at the nip. The two rollers may have helical ribs, or one roller may have axially directed ribs and the other circumferentially. The ribs may have sharp, flattened, or rounded apices. Fig. 16 is a cross-section of the treated paper &c. A composite sheet of aluminium foil and paper may be treated by the method of the invention.
Patent GB-1438973-A (GB)
Title: Developdr material
IPC: G03G9/113
Filed: 1973-05-25
Abstract: 1438973 Developer carriers XEROX CORP 25 May 1973 [30 May 1972] 25119/73 Heading G2H [Also in Divisions B1-B2] A coated carrier for electrostatographic developer mixtures containing finely-divided toner particles, comprises a substrate comprising a surface having a coating thereon, the coating comprising a fluoro-polymer, which has a critical surface tension of between 10 and 31 dynes per centimetre and which is between 20‹C and 25‹C, a fluorine content between 10 and 85 wt. per cent based on the weight of the fluoro-polymer, a melting point of between 80‹C and 330‹C, a Rockwell hardness in the range between R10 and R105, a compressive strength of between 1,700 p.s.i. and 8,680 p.s.i. Suitable fluoro-polymers are polyvinyl fluoride, polyvinylidene fluoride, polytrifluoro-ethylene, polytrifluorochloroethylene, polytetrafluoroethylene, polyperfluoropropylene, poly (1,1-dihyroperfluorooctylmethacrylate), mixtures of polyvinylidene fluoride and acrylic polymers, copolymers of vinylidene fluoride and acrylic monomers, vinylidenefluoride and trifluoroethylene, styrene and perfluorobutyl methacrylate, styrene and perfluoroethylmethacrylate, tetrafluoroethylene and hexafluoropropylene, vinyl fluoride and vinylidene fluoride, vinylidene fluoride and tetrafluoroethylene, vinylidene fluoride and hexafluoropropylene, fluoroalkyl silanes, fluoro terpolymers such as that of tetrafluoroethylene, vinylidene fluoride and a non-fluorinated monomer and polyfluoroethylene suspended in a matrix such as a polyimide. The fluoro-polymer carrier coating material may be conventionally employed carrier coating materials modified by addition of compatible fluorine-modified resins. Numerous suitable materials are specified. Core materials may be sodium chloride, ammonium chloride, aluminium potassium chloride, Rochelle salt, sodium nitrate, potassium chlorate, granular zircon, granular silicon, methylmethacrylate, glass, silicon dioxide, flintshot, iron, steel, ferrite, nickel, carborundum and mixtures of these. For "touchdown" donor surfaces the carrier material may be cloth, metal backed paper, regenerated cellulose, aluminium foil, polyethylene terephthalate and polyvinyl resins, cellulosic materials and protein materials
Patent GB-532506-A (GB)
Title: Improvements connected with fuel supply to power rammers
IPC: E02D7/12
Filed: 1939-09-07
Abstract: 532,506. Mixing air and fuel. JOHNSON & SONS Ltd., C. H., HARTLEY, J., A., and PHILIPPOVIC, J. W. Sept. 7, 1939, No. 25166. [Class 7 (ii)] In internal-combustion power rammers of the kind described in Specifications 293,228, 313,516, [both in Class 83 (iv)], 347,492, and 484,814, [Group XXIII], in which the mixture from a surface carburetter a<2> passes up through hollow stays a to the inlets a<3> of the power cylinder, a better mixing of the fuel and air is obtained by inserting rods or tubes b within the stays a, thus increasing the velocity of the mixture and also the frictional area with which it contacts. The rods b may be arranged axially or inclined, and may be formed with longitudinal ribs, or replaced by a bundle of wires. Lubricant may also be introduced into the carburetter a<2> so as pass up with the mixture.
Patent GB-640285-A (GB)
Title: Improvements in or relating to a well tool
IPC: E21B33/134
Filed: 1947-09-15
Abstract: 640,285. Well-cementing tools. TAYLOR, C. C., and McGAFFEY, E. W. Sept. 15, 1947, No. 25180. Convention date, Feb. 1, 1946. [Class 85] A well-cementing tool comprises a tubular body 4 secured to a string of drill pipe 3, the body carrying spaced packers 5, 6 defining in conjunction with the well casing 2 a chamber 7. The tubular body is sealed off from the drill pipe by a partition 8 and the pressure in the casing above and below the packers is equalized during entry of the tool since fluid flow can occur through ports 9, 10 which lead into a passage through the tubular body. The drill string is connected by a pipe 11 to the chamber 7 whilst a pipe 15 connects the chamber to a port opening into the well casing space below the packers. The ports 10, 14 are controlled by a sleeve valve 20. During the lowering of the tool, the ports 10, 14 are open and the pressure equalized in the drill stem, chamber 7 and the upper and lower casing space. On the tool reaching a level slightly below the area of the perforated casing it is raised a short distance so that the valve 20 closes the ports 10, 14 and grout is pumped down the drill pipe, through pipe 11 and out through the perforations in the casing. To clean the tool after the operation fluid can be pumped down the casing, through port 9 and out of the spring-biassed valve 27, up past packer 6 into chamber 7 and thence up the drill pipe by way of passage 12. Alternatively, the tool can be lowered so that ports 10 and 14 are opened and fluid pumped down the drill pipe into the chamber 7, through pipe 55 into the lower casing space and back to the upper casing space by ports 9, 10. To prevent the tool from being forced upwards, slips are provided, the slip-expanding means being carried on a mandrel 35 secured between the drill pipe and the body, the mandrel being forced downwards to a slip-expanding position by pressure fluid in the drill pipe acting on a piston 55 carried by the mandrel.
Patent GB-780430-A (GB)
Title: Improvements in or relating to sills for doors
IPC: E06B1/70
Filed: 1954-08-30
Abstract: 780,430. Door sills, draught excluders. JONES, M. Nov. 30, 1955 [Aug. 30, 1954], No. 25185/54. Class 20(3)  A sill for a door comprises a trough - shaped casting 10, the front wall 12 of which is higher than the rear wall 13 to project into a rebate 26 in the bottom of the door. and the ends of which are closed by walls 14 having oblique countersunk holes 18 for the reception of screws to secure  the sill to door jambs 25. One, or more, drainage channels 17, each shrouded by a baffle 21, extend through the front wall 12, T-shaped slots 23 being formed adjacent the ends of the rear wall 13 to communicate with recesses 22 formed in locally thickened rear wall portions. A doormat having angle section sides 27 can be connected to the rear wall 13 by bolts 28 which are screwed into the side 27 of the mat lying adjacent the sill, the bolts 28, after having had their heads passed through the upper parts of the slots 23, being slid down to engage the narrower slot parts. The doormat may, in addition., be screwed down to the floor. Shallow longitudinal grooves 19 are formed in the walls of a recess 15 beneath the trough 11 to receive the sealing material, e.g. mastic, or cement, when the sill is bedded down, e.g. on to a stone, or concrete, base. Sealing means may be applied between the door and the sill and may be incorporated as part of the mat frame. The sill may be formed by extrusion, the end walls 14 in this case being made as separate parts subsequently secured in position, and the recesses 22, of course, being omitted. The doormat, in this case, is secured to the sill by bolts which enter screw-threaded holes in the rear wall 13. The front wall 12 is curved outwardly at the base 16 to throw off any water which may run down the front of the door and the sill. Specification 448,557 is referred to.
Patent GB-1352034-A (GB)
Title: Catalytic polymerization
IPC: C08F10/00
Filed: 1971-04-19
Abstract: 1352034 Modified organochromium supported catalyst UNION CARBIDE CORP 19 April 1971 [25 March 1970 25 Jan 1971] 25206/71 Heading C3P An alpha olefin is polymerized in the presence of a catalyst comprising an activated inorganic oxide support carrying a bis-(cyclopentadienyl) chromium (II) compound (which may be substituted on the rings, although no specific substituted products are disclosed), the catalyst having a silane of the formula R 4-n H n  or H 3 Si-[-SiH 2 -] m H, where m and n are 0 to 3 and R is C 1 -C 10  hydrocarbyl, associated therewith. Typical silanes are silane itself, diethyl-, butyl-, phenyl-, triethyl-, tetraethyl-, trihexyl- and methyl-diethyl-silanes. The support is activated by heat. The process may be carried out in a fluidized bed reactor of known type including means for recycling via a heat exchanger; a diagrammatic representation thereof is provided in the Specification. Examples relate to ethylene homopolymerization or copolymerization with propylene or butene, optionally in the presence of hydrogen.
Patent GB-1072862-A (GB)
Title: Preparation of photographic resists
IPC: G03C8/08
Filed: 1964-06-18
Abstract: 1,072,862. Preparing resists. EASTMAN KODAK CO. June 18, 1964 [June 24, 1963], No. 25212/64. Heading G2C. Photographic resists are formed by developing an exposed unhardened colloid silver halide emulsion layer with a 1, 4-dihydroxy benzene silver halide developing agent e.g. hydroquinone, or chloro-, bromo-, tolu- or morpholino-methylhydroquinone, the exposed layer being brought before or during development into contact with an unhardened pigmented colloid layer, whereby oxidized developing agent can diffuse from the image developing areas of the exposed layer into the pigmented colloid layer and harden the colloid layer imagewise, and removing the unhardened areas of the pigmented layer, which may then have been separated from the emulsion layer. The pigmented layer which may contain the tanning developer or an alkali may be coated on the same support as the emulsion layer, either over it or under it, and the emulsion may contain the tanning developer and may be a direct positive emulsion containing stannous chloride or formamidine sulphonic acid as fogging agent. The unhardened gelatine may be removed by transfer to an absorbent support or washing with warm water. The tanning developer may be mixed with an auxiliary developer e.g. metol or a 3-pyrazolidone. Specified pigments are carbon black and titanium dioxide. In order to make a stencil the pigmented layer when separate is coated on a porous support e.g. cloth or paper.
Patent GB-1533072-A (GB)
Title: Compensated signal isolator for measurements in high voltage environments
IPC: G01R15/22
Filed: 1977-06-16
Abstract: 1533072 Measuring current at high voltage INTERNATIONAL STANDARD ELECTRIC CORP 16 June 1977 [21 June 1976] 25222/77 Heading G1U [Also in Division H3] Non-linearity in the input-output characteristic of a standard optical-coupler, Fig. 1, is compensated for by feeding the output 10, Fig. 3, to an amplifier A 1  having a matched optical-coupler in its negative feedback. The arrangement is particularly suitable for measuring current in a high voltage supply, in which case the input voltage E 1 , Fig. 1, is derived from.a current transformer or an appropriate resistive shunt.
Patent GB-1464996-A (GB)
Title: Optimized point of injection of liquid refrigerant in a helical screw rotary compressor for refrigeration use
IPC: F04C28/26
Filed: 1974-06-06
Abstract: 1464996 Rotary positive-displacement fluidmachines DUNHAM-BUSH INC 6 June 1974 [14 Jan 1974] 25231/74 Heading F1F In a refrigerant compressor of the meshing- screw type liquid refrigerant from the condenser C is injected (for cooling and sealing purposes) through a port P in the high-pressure portion of one of the bores accommodating the male and female rotors 20, 21, said port being located at a helical angle from the low-pressure end of the rotor in said bore such that liquid refrigerant flows continuously through the port while the compressor is operating. A slide-valve 46 may be provided to regulate the output.
Patent GB-1098646-A (GB)
Title: Organosilicon-oxyalkylene copolymers
Inventor: CALDWELL DEREK STANLEY
IPC: C08G77/50
Filed: 1964-06-18
Abstract: Organosilicon copolymers are made by reacting in the presence of a hydrogen halide acceptor, (a) a monoether of a polyalkylene glycol, with (b) a polymeric organo-silicon compound containing at least 1 Si-bonded Cl atom and comprising at least one unit of the formula [-R2Si-R1-SiR2-], wherein R1 is a saturated divalent aliphatic hydrocarbon (h.c.) radical, and each R is a monovalent h.c. or halo-h.c. radical free from aliphatic unsaturation. Reaction (b) may be linear or branched, e.g. <FORM:1098646/C3/1> or <FORM:1098646/C3/2> where R11 is H or R and A is a polymer block comprising one or more silalkylene units, e.g. [-R2Si.CH2.CH2.SiR2-] and/or [-R2.SiCH2.-CH2.SiR2O-], with or without siloxane units. In a typical Example (1) 1,2-bis(dimethylchlorosilyl)ethane was hydrolysed to yield a polymer comprising [-Si(CH3)2.CH2.CH2. Si-(CH3)2O-] units. This polymer was equilibrated with PhSiCl3 (Ph = phenyl) to give a polymer of the formula PhSi[OSiMe2. CH2CH2-SiMe2)nCl]3, which was then added to a mixture of a polyethyleneoxypolypropyleneoxy monoether (M.W. = 1700), pyridine and toluene, and refluxed to yield the desired copolymer.  Uses.-As lubricants, emulsifiers and foam control additives in making cellular polyurethanes.