baber/WOPTO huggingface dataset:
Patent GB-714069-A (GB)
Title: Improvements in and relating to apparatus for the photographic copying of documents and the like
IPC: G03B27/16
Filed: 1951-05-16
Abstract: 714,069. Photographic contact printing apparatus. COPYCAT ASSOCIATED (MARKETING), Ltd., and WHEELER, W. H. May 16, 1952 [May 16, 1951], No. 11470/51. Class 98(2) The apparatus comprises a casing having therein a light source or sources of elongated form, a printing frame, a reflecting surface positioned behind the light source or sources, and a pair of reflecting surfaces disposed in outwardly inclined relation between the respective ends of the source or sources and the frame, the reflecting surfaces being of part circular or parabolic cylindrical form with their geometrical axes disposed at an angle to the light source axis or axes, the surfaces being shaped and the source or sources and the surfaces being positioned so as to afford substantially uniform illumination of the frame in a direction parallel to the source axis or axes. The apparatus shown in Fig. 8 comprises a casing 1 which encloses three spaced mercury vapour lamps 3 and reflectors 5, 6 and 7 and has a printing frame hinged thereto at 10, these reflectors being parts of circular or parabolic cylinders and, preferably, disposed within the envelope defined by the polar equation given in the Specification. Plane reflectors constitute the lateral sides of casing 1. The reflectors 6, 7 are mounted on spindles 18, 19 supporting pulleys 25, 23 interconnected by a spring tensioned cable 24 so that the reflectors are normally held in the full line positions shown. An arm 22 on spindle 19 contacts a pin 21 on an arm 20 connected to a frame 14 holding a resilient sheet 15 and cooperating with a frame 9 supporting a transparent screen 2 to form the printing frame. When frame 14 is hinged down for unloading and re-loading purposes, arm 22 is actuated and causes the reflectors to take up positions shielding the screen 2 from the lamps 3. The document to be copied and the light sensitive material are held in contact between the sheet 15 and screen 2 by suction, the space between the sheet and screen communicating through an air cock 17b, (Fig. 7), with a pump 17a. This cock 17b is arranged to close the suction line when the frames 9, 14 are spaced apart. After an exposure, a vacuum release valve is manually or automatically operated as by a timing device so that the frame 14 can be hinged down and reloading effected. Thereafter, frame 9 which is selflatching at 12, 13 is released and moved into contact with frame 14 whereupon the frames are held together by suction and may be oivoted as a unit to their operative postions for another exposure. In another form, opposite ends of the casing are provided with printing frames, the lamps 3 are disposed midway of the casing and a pair of reflectors 6, 7 is provided on each side of the lamps; the lower reflector of each pair is pivotally mounted so that it may act alternatively as a rear reflector or as a light shield. The printing frames may be curved.
Patent GB-761687-A (GB)
Title: Manufacture of vat dyestuffs
Inventor: ZERWECK WERNER
IPC: C09B5/36
Filed: 1954-04-21
Abstract: 2 - Diphenyl - benzthiazole - 6 - carboxylic acid chloride of the formula: <FORM:0761687/IV(b)/1> is produced by condensing 3-mercapto-4-aminobenzoic acid hydrochloride with diphenyl-4-carboxylic acid chloride in pyridine.ALSO:The invention comprises dyes of the formula:-<FORM:0761687/IV(b)/1> (where R is hydrogen, alkyl, aryl, or a heterocyclic radical), and a method of making them by condensing a corresponding benzthiazole - 6 - carboxylic acid chloride with 6 - amino - 31, 41 - phthaloyl - acridone.  The products dye vegetable fibres blue shades.  In examples, 6 - amino - 31, 41 - phthaloyl - acridone is condensed in dichlorbenzene with benzthiazole - 6 - carboxylic acid chloride and its 2 -phenyl 2 - methyl, 2 - (p - xenyl) (see Group IV(b)) and 2-furyl derivatives.  Specification 417,980 [Group IV] is referred to.
Patent GB-1148544-A (GB)
Title: Lead signal generation apparatus for use in control systems
IPC: F15B9/08
Filed: 1967-03-13
Abstract: 1,148,544. Fluid-pressure servomotor systems. BELL AEROSPACE CORP. March 13, 1967 [April 8, 1966], No.11621/67. Heading G3P. An actuator for a controlled apparatus includes hydraulic means for increasing initially the effect of a mechanical command signal by an amount proportional to the signal velocity and has a, coupling means 85, 88 between mechanical input means 22 and a quickener signal producing means 82, 84 and a further coupling means 74, 76 between the quickener signal producing means and input signal receiving means 71 of a hydraeric amplifier having its output 19, 20 connected to the actuator. The quickener signal producing means consists of an eddy current brake which is rotated by initial movement of lever 22 until the field of the magnet 83 retards the disc 82 causing the coupling means 74, 76 to move the input signal receiving flapper 71 of the amplifier which includes a relay valve 17. The amplifier output applies an accelerated response through a piston 13 to an output link 15 connected directly or by a rod or cable to the control surface of a helicopter. Feedback is applied by a rod 37 and a spring 75. In a modified construction, the eddy current brake is replaced by a viscous damper having a pivoted input member connected by springs to the housing 11 and to the valve 17 which also receives the feedback signal, the flapper 71 being omitted. In Fig. 4, the quickening signal is produced by a potentiometer 101, an R.C. differentiating network 108 and a torque motor 111 or by a linear or rotary tachometer coupled to the lever 23 directly or by gearing and providing an A.C. or D.C. signal for the torque motor. Signals may also be applied to the latter by a stability augmentation generator 112.
Patent GB-253869-A (GB)
Title: Improvements relating to railway vehicles
IPC: B61F3/10
Filed: 1926-05-03
Abstract: 253,869. Zoelly, H. June 17, 1925, [Convention date]. Axle-trucks and bogies; springs, arrangement of.-In a railway vehicle with two or more bogies, the frame 1 carrying the vehicle body is sprung relatively to the bogies by springs 5, and each bogie is furnished with three or more axles 4. The axle-journals 7 are each maintained by springs. 9 in contact with a bridge-piece connecting the lower ends of the axle-guards, and so far as depressions in the permanent way are concerned, behave like rigidly journaled axles, while, in travelling over bumps on the track, they are adapted to yield resiliently in an upward direction.
Patent GB-542617-A (GB)
Title: Buttonhole cutting mechanism for sewing machines
IPC: D05B37/02
Filed: 1940-07-15
Abstract: 542,617. Sewing-machines. FAIRWEATHER, W. C. (Singer Manufacturing Co.). July 15, 1940, No. 11700. [Class 112] The cutter 15, in a button-hole sewing- machine, is pivotally mounted at 17 on a crosshead 18 secured to the cutter-bar 9 and carries a bowl 23 on a projecting arm. The bowl rides in a fixed cam slot so that the cutter, in its rising movement moves out of the path of the sewing-needle 5.
Patent GB-231033-A (GB)
Title: Pistons and piston rings
IPC: F16J1/06
Filed: 1924-05-12
Abstract: 231,033. Sullivan, M. H. May 12, 1924. Pistons; packing. -In packing of the type in which each ring 15, Fig. 2, is formed in halves pressed apart by diametral springs 26, 27, and the joints between the halves are covered by jointpieces 18, Figs. 2 and 5, having arcuate ribs 19 entering corresponding grooves in the ends, of the ring segments, the grooves are enlarged in order to facilitate assembly of the packing, and the joint-pieces 18 are made of soft metal, e.g. aluminium, while the ribs 19 are of steel &c., preferably secured in position during casting. The housing 12 for the spring 26 of the upper packing-ring extends across the piston, but the housing 13 for the lower packing-ring is interrupted to clear the connecting-rod. The plungers 20, on which the springs act, are formed with projections 23, which engage recesses in the packing-rings.
Patent GB-543314-A (GB)
Title: Improvements in or relating to safety sheathed blasting cartridges
IPC: F42B3/00
Filed: 1940-07-16
Abstract: 543,314. Blasting cartridges. FORBES, I. A., TAYLOR, J., and IMPERIAL CHEMICAL INDUSTRIES, Ltd. July 16, 1940, No. 11766. [Class 9 (i)] A safety blasting cartridge comprises a core of gelatinous blasting explosive and a sheath for flame quenching, formed of a mixture of free silica and an insoluble metal carbonate. The mixture may be used in a pulverulent state or beaten up with mashed wood-pulp to form a felt. For the silica, sand, comminuted quartz, chalcedony, flint or comminuted acid rock such as sandstone and quartzite may be used, and for the insoluble metal carbonate, comminuted limestone, calcareous shell, chalk, marble, dolomite, magnesite or siderite, or insoluble carbonates of metals in the short periods and first long period of the Periodic Table. The preferable proportions of the ingredients are those corresponding to those contained in ortho-silicates or metasilicates or mixtures of these.
Patent GB-1149548-A (GB)
Title: Improvements in or relating to refuse burning grates
IPC: F23H7/06
Filed: 1967-03-14
Abstract: 1,149,548. Furnace firebars. HANIEL & LUEG G.m.b.H. 14 March, 1967 [16 March, 1966], No. 11790/67. Heading F4B. A grate, particularly for an incinerator comprises a number of outer profiled sections 1 rocking about pivots 3 on their peripheries. The sections are arranged so that the pivots 3 are closely adjacent the next grate section. The rocking sections may be alternated with fixed sections 2, or the grate may include only rocking sections.
Patent GB-901158-A (GB)
Title: Internal brake for spinning and twist spindles
IPC: D01H7/22
Filed: 1961-03-30
Abstract: 901,158. Internal band brakes. NIMTZ, K., and NIMTZ, H., [trading as VOLKMANN & CO.]. March 30, 1961 [April 1, 1960], No. 11836/61. Class 103 (1). [Also in Group IX] A brake for a spinning &c. spindle comprises a wharve and sleeve attached to the spindle, and at least one pair of coaxial rings, the inner one being fast on the sleeve and having an outer periphery eccentric to the spindle axis, the outer one having a similarly eccentric inner periphery embracing the inner ring, and an outer periphery providing the braking surface, means being provided for turning the outer ring on the inner ring to bring the braking surface into contact with the inner surface of the wharve. As shown, two pairs of rings are provided; of each pair, the inner ring 6 is attached at 7 to the spindle sleeve 2, and the outer ring has a part 12 extending into a recess in a rotatable ring 11 which has projections engageable by a member 14 integral with a dish 16 which can be rotated by a handle 17. The eccentricity of the upper pair of rings is diametrically-opposed to that of the other pair; if several pairs of rings are provided, their eccentricities are relatively angularly displaced. A coil spring 18 may be attached to the uppermost inner ring and to the member 14 to return the brake when the handle is released; to hold the parts in braking position, handle 17 may carry a spring-urged pawl 22 engaging ratchet-teeth 23 on a part 24 integral with the sleeve, the ratchet being releasable when a stud 25 is depressed against a spring-stop. To allow for wear of the braking surface, a number of pawls with teeth of different lengths may be provided, the teeth 23 being subdivided ; or a spring may be arranged between the member 14 and one of the projections on ring 11 with which it engages to rotate the ring.
Patent GB-610884-A (GB)
Title: Improvements in and relating to the scanning of cinematograph films
IPC: G03B41/10
Filed: 1946-04-17
Abstract: 610,884. Television. GENERAL ELECTRIC CO., Ltd., and ESPLEY, D. C. April 17, 1946, No. 11867. [Class 40 (iii)] Apparatus for scanning cinematograph film for the purpose of generating television signals comprises a fixed elongated light source, optical means for forming an image of the source upon the film and, means for displacing the said image over the film, in the direction of, and in step with, the frame component of scanning. An image of a slit 12 (Fig. 1), illuminated by an elongated light source 10 is directed on to a mirror 17 arranged at approximately 45 degrees to the optical axis 18. Light reflected from mirror 17 is directed on to a second mirror 19 and thence on to a film 22 on which an image of the slit is focused. An image of the part of the film thus illuminated is formed on a scanning disc 25, light from which is focused on to a photo-electric device 27 by means of lens 28. The mirrors 17, 19 are mounted for limited rotation about spindles 29, 30 respectively, by means of shaped cams 35, 36 which are driven, each in the same sense, in step with the film driving sprocket 24 such that the image of the slit on the film moves in the direction of and in step with the frame component of scanning (opposite to the direction of motion of the film). The wave-form of the movement of the slit image is shown in Fig. 2 (a) in which, in the case of double interlace scanning, the time interval corresponding to one complete picture scan is bounded by the lines 42, 43, the intervals corresponding to two successive frames which are interlaced to form the complete scan being bounded by the lines 42, 44 and 45, 43 respectively. Alternatively, the slit image on the film may be caused to oscillate at twice the picture frequency (i.e. at frame frequency) as shown in Fig. 2 (b), the amplitude in this case being half that shown in Fig. 2 (a), and a vertical shift, such as shown in Fig. 2 (c), applied during alternate frame scans. The required vertical shift may be effected either by giving to the mirrors 17, 19 oscillatory movements having wave-forms as shown in Figs. 2 (b) and (c) respectively, or by the use of an additional fixed slit parallel to the slit 12, a shutter (not shown) being arranged to operate in synchronism with the mirrors 17, 19, which in this case are each oscillated so as to produce the wave-form of Fig. 2 (b), to expose the slits alternately at a recurrence frequency equal to the picture frequency.
Patent GB-472185-A (GB)
Title: Improved means for fixing together a pair of electrical contacts
IPC: H01H11/06
Filed: 1936-04-27
Abstract: 472,185. Clamps. BRITISH INSULATED CABLES. Ltd., BLADES, R. W., and RAWLINSON, J. April 27, 1936, No. 11947. [Class 44] [Also in Group XXXVI] An auxiliary contact 10 is attached to a main contact 2 by a rectangular clamp 4 containing a wedge 8 actuated by screws 9, the lower end 13 being turned outward so that it may be used to lift the clamp off the main contact.
Patent GB-494720-A (GB)
Title: Improvements in or relating to apparatus for the coating of steel sheets with tin orother metals
IPC: C23C2/00
Filed: 1937-04-27
Abstract: 494,720. Tinning-pots. THOMAS & CO., Ltd., R., and DAVIES, D. H. April 27, 1937, No. 12006. [Class 82 (ii)] A series of rolls arranged to convey steel or other metallic sheets coated with tin or other metals through a tinpot includes a pair of feeder rolls P, Q, a rotatable roll R to take the place of a curved extension of one of the usual guides, and upper and lower rolls S, T between which the sheet is received from the said rotatable roll and by which it is conveyed on its way to the pair of exit rolls. The upper and lower rolls S, T may be either plain or disc rolls, or the bottom roll may be plain and the upper roll a disc roll. The upper roll may be larger in diameter than the other rolls in the tinpot so that it projects above the metal into the grease. There may be one, two or more discs per roll. The whole of the rolls are mounted in two long frames so that the frames and rolls may be removed from the tinpot intact.
Patent GB-912268-A (GB)
Title: Process for the polymerisation of unsaturated monomeric organic compounds in aqueous emulsion
IPC: H01J35/04
Filed: 1960-04-05
Abstract: Monomeric unsaturated organic compounds, other than acrolein and a -alkyl acroleins, are polymerized in aqueous emulsion using as emulsifier a solution of polyacrolein in aqueous sulphurous acid or in aqueous bisulphite solution.  The monomer may be acrylonitrile, methyl acrylate, styrene, isoprene or chloroprene and polymerization is preferably carried out in the presence of a Redox catalyst, particularly one containing a ferrous, titanous or silver salt as reducing constituent and a peroxide such as potassium persulphate, hydrogen peroxide or an organic hydroperoxide as oxidizing constituent.
Patent GB-490259-A (GB)
Title: Improvements relating to the lubrication of reciprocating engines
IPC: F16N29/02
Filed: 1937-04-28
Abstract: 490,259. Valves. ALVIS, Ltd., and CLARKE, G. T. SMITHApril 28, 1937, No. 12080. [Class 135] [Also in Group XXXIV] In an internal-combustion or other engine a charge of lubricant is supplied to the working parts when starting up cold through a duct 5 in the crank-shaft 1. The duct 5 has a valve 6 which is biassed to the open position by a spring 7 and is held in this position by a latch 8 carried by a heat sensitive bi-metallic strip 9. In operation the duct 5 is open when the engine is started up cold so that lubricant in the passage 2 of the shaft 1 is thrown into the cylinder and on to other parts of the mechanism. When the engine warms up the latch 8 releases the valve 6 and the latter moves under centrifugal force and closes the duct 5.
Patent GB-917901-A (GB)
Title: Improvements in or relating to flat irons
IPC: H05B1/02
Filed: 1960-04-05
Abstract: 917,901. Thermometers. SIEMENS ELECTROGERATE A.G. April 5, 1960 [April 6, 1959], No. 12091/60. Class 97 (3). In a flat iron having a temperature regulator and a temperature indicator the latter is in the form of an illuminated spot which traverses a scale. As shown, the regulator 4, Fig. 1, automatically adjusts the temperature of the base 1 of the iron to a value selected by a lever 10 movable around the periphery of a scale 8. The bimetallic strip 5 of the regulator 4 is slotted at its free end to engage, and thus rotate, a twisted strip 6 connected to a disc 7, apertured at 9, and associated with an electric bulb 11. The resultant spot of light is viewed through the transparent or translucent scale 8. In a modification, Fig. 3, the setting lever 10<SP>1</SP> is displaceably mounted in a slot 12, in the handle 3, parallel to a slot containing a slider 13 having an aperture 9<SP>1</SP>, the slider 13 being moved by deflections of the bimetallic strip 5 acting through a lever system 14. In a modification the indicator has a separate scale from that of the regulator.
Patent GB-551708-A (GB)
Title: Improvements in and relating to food slicing machines
IPC: B26D1/29
Filed: 1941-09-19
Abstract: 551,708. Cutting slices of food in succession. BATCHELOR'S PEAS, Ltd., TAYLOR, A. E., and LOCK, A. Sept. 19, 1941, No. 12096. [Class 28 (ii)] In slicing articles of food the articles are held in alignment on a stationary rest below which is mounted a reciprocating surface incorporating one or more knives for slicing the articles at each to and fro movement. As shown carrot holders 14 are adjustably screwed into securing members 19 mounted on the stationary member 13. One or more slicing blades 11 are secured above apertures 12 to a reciprocating member 10. The slices fall on to a conveyer band 25. The extent of the reciprocation of the member may be such that one or more articles may be sliced at each forward and each backward reciprocation of the member 10, the knives being provided with cutting edges at both forward and rear edgesr
Patent GB-1605237-A (GB)
Title: Tracer composition for small calibre ammunition
IPC: C06B33/14
Filed: 1975-03-24
Abstract: Coloured tracer composition for small-calibre ammunition whose projectiles comprise a coaxial bore of at least 4 mm in diameter, which composition is based on light metals and oxygenated compounds of the alkali or alkaline-earth metals and/or of copper, and containing, additionally, zirconium metal and salts of halogenated aromatic carboxylic acids.
Patent GB-772668-A (GB)
Title: Thickeners
Inventor: STOKES RUPERT OCTAVIUS
IPC: B01D21/22
Filed: 1954-04-27
Abstract: 772,668. Gravity-separation apparatus. STOKES, R. O. April 26, 1955 [April 27, 1954], No. 12230/54. Class 46. [Also in Groups XXIV and XXXII] In a centre-drive thickener having a reversible motor for raising and lowering the rake, the rake is driven by a worm 3, Fig. 2, engaging a worm-wheel (not shown). The thrust of the worm is supported by a spring (not shown) whereby the axial position of the worm varies a little in dependence on the resistance encountered by the rake. When the resistance rises above normal a double collar (not shown) on the worm 3 moves a stud 7, the direction being to the right as seen on Fig. 3, the stud rotating an arm 8 and, with it, an arm 25. A link 24, 24a is thereby raised and rocks a lever 21, Fig. 2, about a pivot 22 so that a switch contact 23 on the lever touches a contact 20 on a framework 18. The reversible motor is accordingly energized so as to raise the rake shaft through the worm-wheel until a lever 15, 17 connected to the rake shaft lowers the framework 18 and hence the contact 20 away from the contact 23 to stop the motor. When the resistance falls again the worm 3 moves the stud 7 to the left again, thereby causing the contact 23 to touch another contact 19 on the framework, the reversible motor thereupon lowering the rake shaft. Again the lowering stops when the lever 15, 17 raises the framework 18 and hence the contact 19 away from the contact 23. The parts 24, 24a of the link are connected by an arrangement of telescoping tubes 29, 30 and a spring (not shown) which is such that so long as the tension or compression in the link does not exceed the spring bias the link acts as a solid rod, but when the bias is exceeded the link lengthens or shortens respectively (see Group XXIV or XXXII). Specification 586,074 [Group XXXV] is referred to in the Provisional Specification.
Patent GB-482790-A (GB)
Title: Improvements in or relating to apparatus for use in hair-waving
IPC: A45D4/08
Filed: 1937-04-30
Abstract: 482,790. Hair - waving appliances. WHEELER, H. C. April 30, 1937, No. 12353. [Class 131] A spring clip for holding curlers for use in waving hair is provided with an outer layer d<1> of heat-insulating material such as asbestos and an inner layer d of aluminium or other metal which is grooved to receive a thermometer e so that its temperature is readily visible. The thermometer may be of triangular cross-section ; its bulb may be housed in a depression in the metal.
Patent GB-142834-A (GB)
Title: Improvements in conveying mechanism
IPC: B66C7/00
Filed: 1920-05-04
Abstract: 142,834. Lane, H. M. April 29, 1918, [Convention date]. Elevated railways and tramways.-Comprises an overhead trolly system having a main track 2 from which trollies may be transferred to tracks carried by travelling cranes working in each of the bays 1. A switch 7 is provided for each bay, and this, when open, is in alinement with a short fixed track 12 with which a track 22 carried at the same angle by the crane 23 can aline. The switch 7 works on rollers 29 and is operated by a rod 27 from a crank on a hand.chain wheel 25. Guards may be provided on the switch to prevent trollies from running off the track when the switch is open. In the case of a foundry lay-out, as shown, a loop line 3 is laid past the furnaces 4, and a branch 5 is provided. In a modification, a return track is provided, connected by switches with the main track or tracks.