baber/WOPTO huggingface dataset:
Patent GB-1034248-A (GB)
Title: Improvements in or relating to the production of fluorocarbons
IPC: C07C17/00
Filed: 1964-09-24
Abstract: Tetrafluoroethylene is made by heating a mixture of CF2Cl.CF2Cl with hydrogen at 350-450 DEG  C. in the presence of a copper oxide of chromium-alkaline earth metal oxide catalyst which has been prepared by calcining the precipitate obtained by reacting in solution an ammonium chromate with a copper salt and an alkaline earth metal salt.  It is preferred to subject the catalyst to heat treatment in the presence of hydrogen before use.  The proportion of hydrogen used is generally 0.75 to 1.25 mols per mol CF2Cl.CF2Cl.  Examples relate to the use of a copper-chromium oxide barium oxide catalyst.
Patent GB-1341680-A (GB)
Title: Structures for shelving or the like
IPC: A47B87/00
Filed: 1972-08-22
Abstract: 1341680 Cabinets &c. J CAMPE 22 Aug 1972 39026/72 Heading A4B A shelving or like structure comprises a plurality of U-shaped structural members each having planar central 1 and side 2 walls, the latter being formed in their free edges 7, 7' with one or more cut-outs 3 disposed symmetrically with respect to the medial plane M of the member, and linking elements 4 disposed in the space defined between facing cut-outs 3 in the spaced edges 7, 8 of the co-planar side walls 2, 12 of two superposed said members. As shown the cut-outs are arcuate and extend over an angle of less than 180‹. Corresponding linking elements 4 are cylindrical and comprise a central necked portion 5 which is received between the cut-outs. Alternatively, the cutouts and linking elements may be of rectangular section.
Patent GB-1245878-A (GB)
Title: Improvements in or relating to liquid applicators
IPC: B05C17/035
Filed: 1969-08-05
Abstract: 1,245,878. Patterned paint applicator. DIE CASTING MACHINE TOOLS Ltd., and A. R. MILLS. 4 June, 1970 [5 Aug., 1969], No. 39100/69. Heading B6C. A hand-operated patterned paint applicator comprises a roller 16 bearing a design 22 in contact with a self-contained porous ink roller 17. In order to remove the rollers the arms 13 of the supporting U-shaped bracket, which are bent to form elbows, may be removed.
Patent GB-1069450-A (GB)
Title: Process for the manufacture of polypropylene films
IPC: B29C55/00
Filed: 1964-09-28
Abstract: 1,069,450. Making polypropylene films. KALLE A.G. Sept. 28, 1964 [Sept. 28, 1963], No. 39432/64. Heading B5B. In a continuous process for making shrinkable films of polypropylene by extrusion of predominantly isotactic polypropylene at a temperature of 190‹ to 325‹ C. to form a sheet of melt, quenching the extruded melt to below 90‹ C., to form a film having a thickness greater than 0À3 mm. and a minimum crystallinity of 60% stretching the film in the longitudinal and transverse directions and cooling the biaxially stretched film under tension to below 40‹ C., the film is (a) preheated to a temperature ranging from (T 1 -5‹ C.) to T 1  (T 1  = 130‹ to 140‹ C.); (b) further heated in contact with a metal roller maintained at a peripheral surface temperature T 2  (T 2  = 140‹ to 150‹ C.); (c) immediately longitudinally stretched to 5 to 7 times its original length without further heating or artificial cooling; (d) immediately cooled by contact with a cooled metal roller to about 20‹ C.; (e) reheated to a temperature from (T 3 -5‹ C.) to T 3  (T 3  = 155‹ to 165‹ C.); (f) transversely stretched to 8 to 13 times its width after longitudinal stretching at an ambient temperature of T 4  (T 4  = 150‹ to 160‹ C.), the relationship T 1 <T 2 <T 4 <T 3  being observed; and (g) cooled under tension to a temperature below 40‹ C. The heating of the film prior to the longitudinal stretching step may be effected by directing on to it a jet of heated air or by contact with heated rollers, or by passing it through a bath of a heated liquid. The specific gravity at 20‹ C. of the polypropylene used is preferably 0À90 to 0À91 (usually 0À906). The Reduced Specific Viscosity of the polypropylene (i.e. its specific viscosity at zero concentration) is preferably greater than 2, particularly 3 to 4. The R.S.V. value is determined in the usual manner at 135‹ C., using a 0À1% solution of the polymer in cisdecahydronaphthalene stabilized with 0À5% of phenyl-b-naphthylamine. The melt index of the polypropylene used is advantageously 3 to 15 g./10 minutes. The heating of the film prior to its being longitudinally stretched is preferably effected by passing the film through the air space of a heated chamber or of a chamber through which a current of heated air is passed, the relationship between S, the length in metres of the path of travel of the film through the chamber, V the speed of the film in metres per minute, and D, the thickness of the film in millimetres, being such that S/V.d is not less than 0À5.
Patent GB-890925-A (GB)
Title: Improvements relating to vaporising devices
Inventor: SAXBY DERRICK JOHN
IPC: A01M1/20
Filed: 1959-11-20
Abstract: 890,925. Vaporizing devices. TACK AIR CONDITIONING Ltd. Nov. 20, 1959, No. 39495/59. Class 81 (1). [Also in Group XI] A vaporizer for insecticidal compounds comprises an externallyflanged cylindrical body having a shallow cup-like recess adapted to receive an insecticidal compound to be vaporized, and a hole containing a tubular electric heating element which hole is spaced from an end wall of the recess and extends transversely through the body.
Patent GB-1404347-A (GB)
Title: Knitting machine
IPC: D04B9/12
Filed: 1972-08-25
Abstract: 1404347 Knitting machines SCHUBERT & SALZER MASCHINENFABRIK AG 25 Aug 1972 [28 Aug 1971] 39809/72 Heading D1C In a knitting machine for knitting pile fabric (Fig. 1) the pile loop sinkers 30 are drawn back quickly to produce the pile by a lever 40 operated by a cam element 4 acting on a butt 37. The sinker is moved forward using a conventional cam element 61 and a second butt 31. In a modification (Fig. 2) the lever and its associated cam element may be placed below the knocking-over plane E. The pile height may be adjusted by a knob 900 turning a threaded screw 49 to move a slider member 43 and cam element 4 radially, to alter the throw of the lever 40.
Patent GB-941055-A (GB)
Title: Improvements in or relating to ultrasonic cleaning equipment
Inventor: ELLIS GERARD
IPC: B08B3/12
Filed: 1961-11-07
Abstract: 941,055. Ultrasonic cleaning equipment. SURGICAL EQUIPMENT SUPPLIES Ltd. Sept. 21, 1962 [Nov. 7, 1961], No. 39864/61. Heading A4F. A cleaning unit comprises a tank for a cleaning fluid, inlet and outlet valves 14, 15, an ultrasonic generator, and control means for successively opening the inlet valve 14 to fill the tank to the desired level, closing the inlet valve 14, switching on the ultrasonic generator so that impulses for transducers 5 are passed into the liquid in the tank for a pre-set period, switching in the tank for a pre-set period, switching off the generator, opening the outlet valve 15 to empty the tank, closing the outlet valve and then repeating the whole cycle at least once more. The pipe 3 is connected to an outlet or storage tank 7 and the pipe 4 to the tank opening 6 for hot distilled, or de-ionised water, whilst a pipe 8, incorporating supply solenoid 9, connects tank 2 with a container 10 for detergent or other cleaning medium.
Patent GB-966904-A (GB)
Title: A new or improved spool for holding lengths of flexible material
IPC: B65H75/14
Filed: 1959-11-24
Abstract: 966,904. Bobbins. D. J. BROWNE. Feb. 24, 1961 [Nov. 24, 1959], No. 39872/59. Heading B8M. A flanged spool for a length of flexible material has a core 3 extending between the flanges 1, 2 and on to which the material is wound, the spool being formed within the core 3 with openings 5, 6 formed just large enough to receive the forefingers of the user. A line 4, e.g. a fishing line, is wound on the core 3 by the user passing his forefingers through the holes 5, 6 from opposite sides of the spool and rotating them around one another. The line is attached to the core by means of a permanently fixed loop of fine cord. A central opening 7 to receive a spindle and ventilation openings 8 (Fig. 1, not shown) may be provided. In the embodiment shown in Fig. 2 the flanges 1, 2 are formed by circular discs and tubes 9, 10 constitute the core 3. In a modification, Fig. 3 (not shown), each synthetic plastic disc is moulded integrally with a tube 11 and has an opening to receive such a tube.
Patent GB-1325483-A (GB)
Title: Length control method and apparatus
IPC: B23D36/00
Filed: 1970-08-19
Abstract: 1325483 Automatic length control R W SCHMIDT 19 Aug 1970 [20 Aug 1969] 39895/70 Heading G3R The lengths of pieces cut from a continuouslyfed sheet are compared with a desired length and any error used to effect correction by adjusting the time of cut, each adjustment being terminated when its magnitude corresponds to the error. As applied to controlling the drive to a pair of counter-rotating blades arranged above and below the path of corrugated board so that it is cut into lengths as it is fed forward, a wheel 75, Fig. 3, engaging the board, produces a speed signal which is integrated at 78 for periods between successive cuts determined by signals produced by operation of the blades at 77. The resulting analogue or digital signals corresponding to the lengths cut are compared at 80 with a signal from 82 corresponding to a desired length so that a servomotor 58 is operated in a direction corresponding to the error to adjust at 56 the speed ratio of a Reeves drive 20 to the cutting blades. A pulse generator 66 produces a number of pulses corresponding to the extent of adjustment which is divided by a factor from 68 corresponding to the adjustment setting so that a number of pulses bearing a linear relationship to the change of speed is compared at 72 with a number of pulses corresponding to the error. When each speed correction corresponds to the error servomotor 58 is stopped.
Patent GB-1503149-A (GB)
Title: Mixing faucet having a side and/or a bottom outlet
IPC: F16K11/078
Filed: 1974-09-13
Abstract: 1503149 Valves H & D E WATTS Ltd 23 May 1975 [13 Sept 1974] 39957/74 Heading F2V A mixing faucet has hot and cold inlets 3, 4 and a rotatable and reciprocable piston 8 with a passage 10 to regulate the temperature and volume of water discharged through one or more outlets 5, 5a, 6, opposed areas 19, 20 on the piston being unequal and subjected to water pressure when the piston is raised from the closed position shown. Upward movement of the piston against the resistance of a seal 13 is thus assisted by water pressure. A knob 16 having its rotation limited by a rib 25 and a lug 26 is connected by a screw 23 to a stem 9 on the piston. In a second embodiment, the piston is operated by a lever (26), Fig. 3 (not shown), similar to that shown in Specification 1,377,082 and the faucet forms part of a kitchen sink fitting (41) with a swing spout (51) carried by a trim plate (52). Specification 1,310,101 is referred to.
Patent GB-400057-A (GB)
IPC: G03C7/14
Abstract: 400,057. Colour photography. I. G. FARBENINDUSTRIE AKT.-GES., Frankfort-on-Main, Germany. Feb. 16, 1933, No. 4787. Convention date, Feb. 16, 1932. [Class 98 (ii).] In printing on to a lenticular sensitive film by contact or projection, from a negative lenticular film or a partial-colour negative film, a diaphragm or graded filter is interposed in the path of the printing beam, which grades the light passing through each of the areas corresponding to the strips of the multicolour filter from a maximum at the margins of the area to a minimum at its middle. The strips of the filter itself, for example, may be blackened as shown in Fig. 2, with intensity varying from a minimum at the margins of each strip to a maximum at the middle, as by treatment with Neutral Grey dye ; or the filter may be associated with a diaphragm such as is shown in Fig. 3 which progressively masks the bands. In a modified diaphragm, the variation is not progressive, but changes abruptly from complete to partial masking. For contact printing, an extended source of light, Fig. 5, perpendicular to the lenticles of the film, may be used in association either with a filter graded in a similar manner to that of Fig. 2, or with a diaphragm having an aperture of graded width, as shown in Fig. 6. Specifications 356,701 and 392,987 are referred to.
Patent GB-1377536-A (GB)
Title: High speed printers
Inventor: DECKER H
IPC: B41J9/12
Filed: 1972-08-29
Abstract: 1377536 Selective printing TRIUMPH WERKE NURNBERG AG 29 Aug 1972 [10 Sept 1971] 40072/72 Heading B6F Hammer impression.-A plurality of hammers 5 each of a character width are selectively operated by an electromagnetically initiated snatch-roll mechanism for timed impact action of a type-cylinder 1, the hammers and type cylinder being axially displaceable relative to each other so that each hammer can be made to impact a character in one of at least two juxtaposed bonds on the type-cylinder. In the particular embodiment, Fig. 1, each pivotally mounted hammer 5 is laterally or axially moved by a slotted guide 6 moved by a cam (not illustrated) or an electromagnet (16, Fig. 2). The hammers either move axially along the pivot shaft 7 or flex as shown in (Fig. 3). An electromagnet 14 for each hammer when energized pulls a link member 8 against the bias of a spring 11 into the path of a snatch-roll 10. This causes the hammer to pivot. As an alternative the hammers could be slidably mounted. As further alternatives the type-cylinder and paper could move axially with the hammers fixed, or both hammers and type-cylinder move.
Patent GB-903062-A (GB)
Title: Dimeric p-isopropenylphenol, a process for its production and its use in the preparation of 1:3:3:trimethyl-1-p-hydroxyphenyl-indan-6-ol
Inventor: HINTON IAN GEOFFREY
Filed: 1959-11-25
Abstract: The invention comprises dimeric p-isopropenylphenol of the isomeric formulae I and II, which compound is prepared by heating p-isopropenylphenol in an inert organic diluent medium (e.g. refluxing in cyclohexane) and separating the product from the reaction mixture.  <FORM:0903062/IV (b)/1> <FORM:0903062/IV (b)/2> <FORM:0903062/IV (b)/3> Catalytic hydrogenation of the dimer gives the corresponding saturated bisphenol.  On treating the dimeric p-isopropenyphenol with an acid catalyst such as hydrochloric or sulphuric acid, the indane derivative III is obtained.  Specification 988,747 is referred to.
Patent GB-1497442-A (GB)
Title: Photosensitive semiconductor devices
IPC: H01L31/068
Filed: 1975-10-02
Abstract: 1497442 Photosensitive elements SONY CORP 2 Oct 1975 [9 Oct 1974] 40358/75 Heading H1K An antireflection coating on the silicon body of a photosensitive device consists of polycrystalline silicon containing oxygen, the oxygen constituting 25 to 45 atomic per cent of the coating material. The coating may overlie the photosensor regions of a CCD imaging device, the emitter region of a floating gate phototransistor, or the single PN junction of a photoconductive diode or solar cell. To ensure minimum reflection the refractive index of the coating may be adjusted by its oxygen content to satisfy the equation n c  = #/n s .n a  where n c , n s , n a  are the respective indices of the coating, silicon, and the overlying material, which may be air or a passivating layer of silicon or epoxy resin, and its thickness d c  to satisfy equation n c d c  = #/ 4 . The polysilicon, which preferably has a grain size of 100-1000 Š, may be formed by reaction of oxygen, water vapour, nitrous or nitric oxide or nitrogen dioxide with silane at 600-750‹ C. or with silicon tetrachloride at 1100‹ C.
Patent GB-1211826-A (GB)
Title: Explosion pressure and/or heat and smoke venting unit
IPC: F24F7/02
Filed: 1969-08-13
Abstract: 1,211,826. Ventilators. H. H. ROBERTSON CO. 13 Aug., 1969 [11 Sept., 1968], No. 40477/69. Heading F4V. [Also in Division A5] A ventilator adapted to be opened in the event of fire or an explosion comprises hinged cover 28 normally held by latch 34 in a closed position in which it overlies curb 22, and fluidactuated motor means 44 mounted between cover 28 and curb 22 pivotally connected to one and operatively engageable with, but normally disengaged from, the other, whereby the cover is pivotable to the open position, manually on release of the latch or forcibly on activation of the motor. Link 66 serves to limit pivotal motion of the cover and to lock it when opened. Telescoping motor means 44 is pivotally mounted at 40 on platform 42 between curb walls 32, 36, rests on support 94, and extends upwardly with axially movable rod 88 adjacent abutment 38 on the cover. The motor means comprises cylinder 80 having a variable volume chamber 86 and a sliding piston 82 connected to rod 88, and replaceable cartridge 46 which contains pressurized fluid, e.g. N 2  at 600-2500 p.s.i., and can communicate with cylinder 80 via mounting member 100 and link passage 102. Mounting 100 includes a piercing pin for the cartridge activated by release means 48 employing spring 132 and fusible link 130. Latch 34 is also connected to release 48, but may alternatively be manually released by a cable (76, Fig. 6). The motor means is alternatively activated by increasing gas pressure in the cartridge. In an alternative embodiment (Fig. 9) the motor means may be pivoted on the cover and extend towards an abutment on the curb.
Patent GB-880010-A (GB)
Title: Improvements in vehicle suspension systems
IPC: B60G23/00
Filed: 1957-12-31
Abstract: 880,010. High speed craft; aircraft undercarriages. CITROEN S. A., ANDRE. Dec. 31, 1957 [Jan, 4, 1957 ; Dec. 26, 1957], No. 40484/57. Classes 4 and 113. [Also in Groups XXIX, XXXII and XL (c)] The floats or skids of a high-speed craft or an aircraft undercarriage are moved up and down to follow irregularities in the surface of the water by bell-cranks 3, 4 moved by pistons 5. Pistons 5 are moved hydraulically by liquid controlled by distributer valves 9, (see Group XXIX). Valves 9 are operated under control of echo-sounding devices 11 which use waves of ultrasonic frequency to detect irregularities in the water surface at a fixed distance in front of each float, (see Group XL (c)), appropriate corrections for the speed of the craft being made so that the floats are moved up or down at the correct time to coincide with their passage over the irregularities. The undercarriage of an aircraft provided with wheels may be similarly controlled.
Patent GB-408109-A (GB)
IPC: G03C7/14
Abstract: 408,109. Colour photography and kinematography. RODDE, A., HERAULT, A. H., 6, Rue Philippe de Girard, Paris, HUDELEY, V., 50, Boulevard Victor Hugo, Clichy, and LAGRAVE, J., 147, Avenue de Clichy, Paris, both in France. May 24, 1933, No. 14990. Convention date, May 26, 1932. [Class 98 (ii).] In apparatus for reproducing recurring-series, colour-record, kinematograph negatives by projection printing on to a sensitive lenticular film, the negative film N is fed downwards from a loose spool 1 to a driven spool 2, and the sensitive lenticular film V is fed upwards from a loose spool 4 to a driven spool 5, the films being advanced intermittently by known means 3, 6 across their respective gate apertures between which are situated the projection lens 7 fitted with the usual threecolour screen T, a rotary screen 8, and rotary shutter 9. The various parts are all driven from a main shaft 10 which drives the negative feed 3 directly, and the lenticular film through a mutilated gear wheel. The shaft is coupled by bevel gears to a shaft 14 which drives (1) through wheels 15, 16 a shaft 17 carrying a toothed wheel which drives, through wheels 19, 20, the shaft 21 of the shutter 9 ; and (2) through wheels 25, 26 a shaft 27 coupled by bevel gears to a mutilated wheel 31 meshing with a wheel which drives the feed device 6 of the film V. The shutter shaft 21 also, through wheels 22, 23, drives the shaft 24 of the screen 8. The mutilated wheel 31 is so chosen that the negative film is fed twice or three times (according as to whether it bears a two-colour or three-colour sequence) for each feed of the film V ; and the gearing of the feeds, screen, and shutter is such that the film V is exposed twice or three times to the various negative records of a sequence before it is fed forward for printing the next sequence. Means controlled by a cam on the shaft of the mutilated wheel 31 is provided for locking the film V against movement except when the wheel 31 is in mesh. If the images on the film to be reproduced are coloured in the colours of the screen used when taking the pictures, the rotary screen 8 may be dispensed with.
Patent GB-1156704-A (GB)
Title: Injection Systems for Internal Combustion Engines.
IPC: F01L33/02
Filed: 1966-09-13
Abstract: 1,156,704. Fuel injection systems. SULZER BROS. Ltd. Sept. 13, 1966 [Sept. 14, 1965], No.40840/66. Heading F1B. A fuel injector 12 supplied by a pump 1 is held closed by hydraulic pressure in the space 19 until this pressure is released by a distributer 23. The distributer comprises a rotary valve 30, in an adjustable sleeve 31, which serves to connect the pipe 21 alternately to a pressure line 22 and exhaust line 24. The valve 30 is movable axially to adjust the injector period and the sleeve 31 is adjustable angularly to vary the beginning of injection. Each injector has associated therewith an accumulator 5. In a multi-cylinder engine the valve 30 and sleeve 31 have separate sets of ports for each injector and the sleeve sections associated with each injector are interconnected by teeth 50 Fig. 2 so that the sleeve portions are adjustable angularly together by lever 47 but are adjustable axially separately by eccentrics 53.
Patent GB-1523877-A (GB)
Title: Processing fo printing plates
IPC: G03F7/32
Filed: 1974-09-19
Abstract: 1523877 Developing photo-sensitive polymers VICKERS Ltd 19 Nov 1975 [19 Sept 1974] 40949/74 Heading G2C A developer for an exposed photo-sensitive polymer layer includes a lactam of the Formula: in which n is 0 or an integer of from 1 to 9; h is a hydrogen atom, or an alkyl, alkenyl, aralkyl, aryl or acyl group; and R' and R" are each a hydrogen atom or an alkyl or aryl group, together with a wetting agent and/or a colourant. The colourant is preferably an organic solvent soluble dye. Preferred lactams are 1-methyl-2pyrrolidinone, 1-butyl- 2-pyrrolidinone, 1-cyclohexyl-2-pyrrolidinone, 2-pyrrolidinone, 1-vinyl-2-pyrrolidinone and #-caprolactam. The developer may further include (i) an acid e.g. phosphoric, hydrochloric [or] sulphuric, acetic, lactic, glycollic or α-pentenoic acid (ii) an inert diluent e.g. water, ethanolamine or 2-ethoxy ethanol and (iii) an additional organic solvent which dissolves the polymer e.g. tetrahydrofurfuryl alcohol, 2-methoxy ethyl acetate or γ-butyrolactone. The light-sensitive polymer is negative working containing groups of the structure -CH=CH-CO- e.g. polyvinyl cinnamate, or a cinnamoylated epoxy resin.
Patent GB-1276232-A (GB)
Title: Polyesters containing tertiary nitrogen atoms
Inventor: EIMER ERICH
IPC: C08G63/00
Filed: 1970-08-26
Abstract: 1276232 Polyesters; unsaturated polyester curing accelerators FARBENFABRIKEN BAYER AG 26 Aug 1970 [29 Aug 1969] 41081/70 Headings C3P and C3R Polyesters of the formula in which R 1  is a methyl or ethyl group, R 2  is an alkyl group with 1 to 6 carbon atoms, R 3  is a saturated alkylene group with 4 to 12 carbon atoms or a saturated cyclo-alkylene group or an arylene group, of which the dicarboxylic acids do not form cyclic anhydrides, and n is an integer from 1 to 100, are prepared by polycondensing a dicarboxylic acid of the formula with an excess of a tertiary amine of the formula by heating under an inert gas. Specified amines are N-bis-(#-hydroxypropyl)-p-toluidine and ptert-butyl amiline and N-bis-/#-hydroxybutyl)- p-ethylaniline, specified dicarboxylic acids are adipic, pimelic, sebacic, cyclohexane-1,4- cyclohexane-1,2-trans, isophthalic and terephthalic. The above polyesters may be used as curing accelerators in a curable resin composition comprising an unsaturated polyester, derived from phthalic anhydride, maleic anhydride and 1,2- propylene glycol, and styrene.