baber/WOPTO huggingface dataset:
Patent GB-644118-A (GB)
Title: Wave-signal translating arrangement for time-modulated pulses
IPC: H03K9/08
Filed: 1948-03-01
Abstract: 644,118. Pulse modulation systems. HAZELTINE CORPORATION. March 1, 1948, No. 6457. Convention date, March 18, 1947. [Class 40 (v)] In a pulse time modulation system wherein one edge of each pulse is modulated by the signal or alternately both edges are modulated in the same sense, noise is eliminated by cancelling out the noise modulation of the leading edges by that of the trailing edge. The invention is applicable to multiplex systems. Pulses C from a transmitter, Fig. 2a, are fed through a carrier frequency selector and carrier frequency amplifier to a detector which derives unidirectional trapezoidal pulses A, Fig. 2b, for application to a pulse shaper. Noise superimposed upon the desired pulse A may be present giving rise to the pulse N. The pulse shaper limits the amplitude and clips the pulses at the levels O, O and P, P to derive a sugstantially rectangular time-modulated pulse. As shown, Fig. 2b, this pulse B may have leading and trailing edges displaced equally in opposite directions by the noise present. These pulses are then passed simultaneously to a leading edge detector and a trailing edge detector, which derive effects resembling the original modulation signal. The outputs of the leading and trailing edge detectors are fed to a mixer which is responsive in the same sense to the two outputs and thus develops a resultant modulation signal corresponding to the original modulation, the effects caused by noise being cancelled out. In a second embodiment after the pulse has been shaped (Fig. 4, A, noise shown dotted), it is passed to a peak rounding circuit the output of which, Fig. 4, B, is differentiated to derive pulses of the form C. These pulses are passed to a pulse clipper to obtain substantially rectangular pulses as shown in Fig. 4, D. These pulses are again differentiated, Fig. 4, E, and passed to a pulse polarity selector which selects the centre pulse, Fig. 4, F, which is dependent upon the time modulation of the centre of the pulse of Fig. 4, A, and therefore independent of noise. In a further embodiment the pulse shaper output, Fig. 6, A, is passed to a differentiating circuit the output from which, Fig. 6, B, is passed to separate pulse generators generating pulses which are terminated by pulses corresponding to the leading and trailing edges of pulse A respectively. These pulses, Fig. 6, C and D, are combined to form of pulse Fig. 6, E, the area of which is independent of noise modulation. Upon integration of this pulse, therefore, an output pulse, Fig. 6, F, is obtained, the amplitude of which is dependent only upon the time modulation of the pulse A.
Patent GB-1206035-A (GB)
Title: A method of producing reflection and transmission gratings
IPC: G02B5/32
Filed: 1968-02-09
Abstract: 1,206,035. Diffraction gratings. D. RUDOLPH and G. SCHMAHL. Feb.9, 1968 [Feb.11, 1967], No.6494/68. Heading G2J. A photo-resist layer is placed in an interference pattern produced by two beams of coherent light and after development either used directly as a reflection or transmission grating or employed as a mask in forming such a grating. Beams from opposite ends of a laser may have their cross-sections enlarged by catoptric systems and then impinged on the photo-resist layer at such an angle between the beams as to form the desired grating spacing. After development the photo-resist layer may have a sinusoidal structure or a stepped surface, the former representing a blazed grating and the latter a normal one. The surface may be mirrored to form a reflection grating. In further forms a metal layer forms the backing and after development of the photo-resist the latter forms a mask for etching the metal layer. A mirroring film may be provided after etching and removal of the remaining photo-resist or may be provided between the metal layer and a glass backing.
Patent GB-668970-A (GB)
Title: Improvements in light-sensitive photographic papers and gelatino-baryta coating compositions therefor
IPC: G03C1/775
Filed: 1950-03-16
Abstract: 668,970. Photographic papers. KODAK, Ltd. March 16, 1950 [March 18, 1949], No. 6597/50. Drawings to Specification. Class 98 (ii). [Also in Group V] A photographic paper support which is overcoated with a silver halide emulsion layer comprises a paper sheet having on one surface thereof a gelatino-baryta layer containing glyoxal as a gelatin hardening agent. Preferably said gelatino-baryta layer contains 1-6 per cent of glyoxal, typically 2 per cent, based on the weight of the gelatine content. In the example given, the gelatino-baryta composition. comprises 20-50 per cent by weight of baryta and 1-15 per cent by weight of gelatin.
Patent GB-397565-A (GB)
Title: Improvements in, or relating to, electro-plating and other vats, tanks, and like vessels
IPC: C25D21/00
Filed: 1932-03-05
Abstract: 397,565. Heating liquids ; electroplating. RANDALL, P. E., 52, Hylton Street, Birmingham. March 5, 1932, No. 6665. [Class 41.] An electroplating or other vat b is connected by a pipe d to a heater a to the crown of which is connected a return pipe e terminating b e n e a t h the normal liquid level of. the vat where it is provided with a silk or other filter-bag. The heater is provided with flues c and is heated by a gas-ring f surmounted by a guard g. The circulation may be assisted by compressed air injected into the top of the heater casing from a pipe located concentrically within.the pipe e.
Patent GB-174297-A (GB)
Title: Improvements in and relating to railroad spikes
IPC: E01B9/06
Filed: 1921-02-28
Abstract: 174,297. White, J. Feb. 28, 1921. Hook-headed spikes.-A railroad spike adapted to engage the base and support the head portion of a rail comprises a spike 3 and a movable locking-member 4. The spike 3 has a prong 8 on the underside of the head 7, and a cylindrical hole 10 through the head where it contacts with the base of the rail. The locking-member 4 has a cylindrical pin 13 with an enlarged end at its lower extremity, which forms a swivelled rotary connection with the head 7 when inserted in the hole 10. The head of the locking-member has a lip 16, and a vertically extending projection 19 so that, when the member is bent into engagement with the head of the rail, the lip 16 forms the supporting-portion while the projection 19 limits the distance moved by the head and prevents undue strain on the pin 13.
Patent GB-359853-A (GB)
Title: Improvements in lime-slaking machines
IPC: C04B2/08
Filed: 1931-03-04
Abstract: A lime-slaking machine comprises a tank having a screen provided across the outlet, a brush mounted in the tank for movement across the screen to clean it, an agitator in the tank, and means to drive it alone, or simultaneously with the brush.  In a preferred construction, as shown in the Figure, the brush 17 is carried by sleeve hub 15 rotatably mounted on shaft 18 to which agitators 19 are attached and which is driven by suitable means 27.  In operation, the screened opening 12 is closed by gate 9, and the lime and water, admitted through hopper 6 and pipe 7 respectively, are thoroughly mixed, the brush members remaining stationary.  When the mixing is completed, the gate 9 is raised <PICT:0359853/III/1> and the brush mechanism engaged by means of clutch member 21.  The slaked lime is thereby delivered free from unslaked particles.
Patent GB-631610-A (GB)
Title: Improvements in or relating to means for controlling and adjusting the level of liquids in containers
IPC: G01F23/292
Filed: 1947-03-11
Abstract: 631,610. Automatic liquid level control systems. ADLAM & SONS, Ltd., G., and FRIENDSHIP, K. F. M. March 11, 1947, No. 6750. [Class 38 (iv)] The level of a liquid is controlled by admitting or releasing gas under pressure to or from an enclosed space above the liquid, the gas being controlled by magnetic valves actuated by upper and lower limit photocells. A housing 4, vertically adjustable by a rack-and-pinion on a sight glass 2 mounted on the side of a container 1, contains a pair of lamps, one being shown at 8, and a pair of photo-cells, one being shown at 7, in partitioned compartments, Fig. 2 (not shown). A cylindrical screen 9, movable with the housing, has upper and lower sets of slits arranged to coincide with the two sets of lamps and photo-cells. A float, or the meniscus, or the opacity of the liquid, interrupts the light or infra-red rays at the upper or lower limit to open one of the magnetic valves 11, 12 that admit or release gas under pressure, causing the liquid to be expelled, or drawn in, through a pipe in the base of the container to restore the liquid level.
Patent GB-457873-A (GB)
Title: Hydroxy sulfonated fatty acid esters and their production
IPC: C11C3/00
Filed: 1935-03-04
Abstract: Products stated to have wetting, foaming, cleansing and emulsifying properties are prepared by the following methods: (1) a soluble salt of a 1 : 2-dihydroxypropane sulphonic acid is condensed with a fatty acid containing at least six carbon atoms, or (2) a soluble salt of 1-halogen-2-hydroxypropane-2-sulphonic acid is condensed with a fatty acid salt containing at least six carbon atoms.  The soluble salts of the propane sulphonic acids mentioned are the alkali metal, ammonium, alkaline earth metal and heavy metal salts and also the basic organic salts.  In examples: (1) sodium 1 : 2-dihydroxypropane-3-sulphonate is refluxed with coconut fatty acids and the resulting ester purified with alcohol; (2) the sodium salt of 1-chlor-2-hydroxypropane-3-sulphonic acid, prepared by treating glycerol with chlorine and replacing one of the chlorines by means of sodium sulphite, is condensed with a sodium soap obtained from tallow; (3) a triethanolammonium salt, prepared by reacting 1 : 3-dichlorhydrin with triethanolammonium sulphite is condensed with commercial sodium stearate. Specification 372,005 is referred to.ALSO:Products stated to have emulsifying properties are prepared by the following methods: (1) a soluble salt of a 1 : 2-dihydroxypropane sulphonic acid is condensed with a fatty acid containing at least six carbon atoms, or (2) a soluble salt of 1-halogen-2-hydroxypropane-3-sulphonic acid is condensed with a fatty acid salt containing at least six carbon atoms.  The soluble salts of the propane sulphonic acids mentioned are the alkali metal, ammonium, alkaline earth metal and heavy metal salts and also the basic organic salts.  In examples (1) sodium 1 : 2-dihydroxypropane-3-sulphonate is refluxed with coconut fatty acids and the resulting ester purified with alcohol: (2) the sodium salt of 1-chlor-2-hydroxypropane-3-sulphonic acid, prepared by treating glycerol with chlorine and replacing one of the chlorine atoms by means of sodium sulphite, is condensed with a sodium soap obtained from tallow: (3) a triethanolammonium salt, prepared by reacting 1 : 3-dichlorhydrin with triethanolammonium sulphite is condensed with commercial sodium stearate.
Patent GB-527290-A (GB)
Title: Improvements in printing methods and printing inks
IPC: B41M7/00
Filed: 1939-03-02
Abstract: 527,290. Printing processes; resinous condensation products. COATES BROS. & CO., Ltd., and COATES, L. March 2, 1939, No. 6817. Drawings to Specification. [Class 100 (ii)] [Also in Group IV] Printing is effected with an ink which dries by polymerization and the polymer is dried by radiant heat applied immediately after printing. The heat is preferably applied by a gas heater of complete combustion radiator type. The prints may be cooled directly after the ink has set. Suitable inks are colouring matter, e.g., carbon black, ferro-cyanide blue, and barium lithol red toner, with a heat 'polymerizing medium consisting of either (a) rosin modified phenol-formaldehyde resin, linseed oil modified terpene-maleic anhydride resin, linseed oil modified glyceryl phthalate resin, linseed stand oil and fused lead tungate, or (b) rosin modified phenol - formaldehyde resin, linseed oil modified terpene-maleic anhydride resin, linseed stand oil. dibutyl phthalate, low viscosity mineral oil and lead tungate. Instead of the linseed oil modified glyceryl phthalate resin and terpene-maleic anhydride resin, other alkyd resin such as soya bean oil modified glyceryl-maleic anhydride resin may be used, and other high boiling plasticizers such as di-ethylene glycol may be used in place of dibutyl phthalate. In preparing the inks, the resins are heated with the linseed oil at a temperature of 200‹C. to 300‹C. until a clear solution results, the lead tungate is added, and, in the case of medium (b) the plasticizer and mineral oil are added. After cooling the medium is ground with the pigment.
Patent GB-668003-A (GB)
Title: Improvements in a take-off or discharge device for an air conveyor
IPC: B65G53/20
Filed: 1950-03-20
Abstract: 668,003. Discharge of air conveyers. HURON PORTLAND CEMENT CO. March 20. 1950. [April 5, 1949] No. 6873/50. Class 78 (i). A material discharge device for an air conveyer comprises a porous inclined support 3, a gas chamber 21 beneath the support, sidewalls for confining the material, an opening 10 in one said sidewall, and a blade 12 arranged to divert material through said opening. Fig. 1. Powdered material flows along porous support 3 which is inclined at an angle greater than the angle of repose of the material and is diverted into side duct 11 bv blade 12 which is pivoted on spindle 13 and is operated by compressed air cylinder 21 through piston 20 and crank arm 19. Air from conduit 1 passes up through the support 3 and aerates the material. Blade 12 is reinforced by longitudinal supports and is bent at the end and has a rubber lower edge 18. Said blade 12 may be made smaller in length than the width between the sidewalls 9 so that only part of the material flow is discharged. Felt seal 14 prevents egress of discharged material. The porous support 3 may be made of porous filler stone or woven fabric (e.g., of cotton or glass fibre).
Patent GB-369370-A (GB)
Title: Improvements in or relating to the decoration of materials
IPC: D06N3/00
Filed: 1931-03-05
Abstract: 369,370. Printing. ARMSTRONG CORK CO., Lancaster, Pennsylania, U.S.A.-(Assignees of Rottmund, F. G.; 429, Nevin Street, Lancaster, Pennsylvania, U.S.A.) March 5, 1931, No. 6892. Convention date, April 7, 1930. [Class 100 (ii).] Printing processes; platen machines.-Decorative material, such as floor-coverings resembling jaspÚ linoleum, is produced by maintaining continuous relative movement between a brush and a strip of intermittently-moving coated material. A striated pattern may, for instance, be printed on the material followed by brushing the material longitudinally to draw out the colours. The apparatus employed may be the usual block machine comprising a number of vertically-reciprocating blocks 7, 7a printing in succession on material fed step by step over a bed 2, the blocks being carried by slides 6, each of which is actuated by a cam 8 fixed on a rotary shaft 9. The block 7a is held in the inoperative position by the usual latch-up mechanism 10, shims 12 being placed under the hook to retain a cam roller 11 on the slide 6 slightly above the high point of the cam, and a brush, arranged at an adjustable inclination, is fixed to a slide 25 reciprocated in slots 26 in brackets 27 fixed to the block, by means of a rod 24 connected to a crank 23 actuated by chain gearing from the shaft 9 through a lay shaft 16. The movement of the brush is so timed that changes of direction occur when the material is moving, the shaft 16 being in two relatively adjustable parts to provide means for varying the timing. In an example, the first block is provided with longitudinal saw cuts and prints lines in light green, the second is similar and overprints in dark green, the third block is cross sawn and serves for pressing the colours together, and the fourth carries the brush ; alternatively, lines of different colour or different shades may be printed sideby-side, or the second block may print wavy lines.
Patent GB-177681-A (GB)
Title: Improvements in and relating to carburetting devices
IPC: F02M21/00
Filed: 1921-03-02
Abstract: 177,681. Dicker, E. R., and Scott, J. J. March 2, 1921. No Patent granted (Sealing fee not paid). Spray carburettors.-The needle valve 26 controlling the inlet of aerated fuel through a duct 30 is provided with a conical sleeve 25 which coacts with conical sleeves on a fixed member 19 to provide a tortuous path for the rich mixture, which enters the mixing-chamber 1 in an annular stream at 41. The fuel is supplied to the duct 30 through a slot 33 and pipe 32, and is aerated by air supplied through a suction-actuated ball valve 33. A similar ball valve may be fitted in the tube 32, or a single valve controlling the supply of fuel and air may be provided. The main air supply enters through a rotary sleeve valve 3 provided with a taper s'lot 8, the valve 3 and needle valve 26 being connected through roda and levers 6, 13, and 16, 15, 14 to the throttle-valve spindle 11 for simultaneous operation. One or more additional air inlets 37, some of which may be closed by a sliding clip or shutter, may be provided in the carburettor body. The inlet to the valve 3 may be closed by a hand-operated shutter at starting. Baffles 42, 43 or a choke tube may be provided adjacent to the inlet 41 for rich mixture.
Patent GB-385145-A (GB)
Title: Improvements in or relating to knitting machines and stop motions therefor
IPC: D04B15/94
Filed: 1932-03-08
Abstract: 385,145. Knitting-machines. HEMPHILL CO., Central Falls, Rhode Island, U.S.A.-(Assignees of Lawson, R. H. ; 55, Cooke Street, Pawtucket, Rhode Island, U.S.A.) March 8, 1932, No. 6921. Convention date, March 9, 1931. [Class 74 (ii).] In knitting - machines adapted to perform a sequence of operations in timed relation, means are provided whereby the machine can be stopped automatically in the event of proper timed relation between the operations not being maintained. The invention is described in connection with a circular rib knitting machine wherein cam shafts 3, 11, Fig. 4, are employed respectively to control the knitting of plain fabric and rib fabric, the stop motion becoming operative when the shafts are out of phase, or in the event of the dial cam being projected during reverse strokes of reciprocating knitting. The main cam shaft 3, which is rotated every four courses, carries a drum 7 which is provided with cams 15 for engaging and rocking a pivotally mounted bell-crank lever 16, engagement of the latter with a second rocking lever 17 causing a pawl 18 to advance the rib shaft 11 and bring the ratchet 19 within the stroke of a constantly reciprocating pawl 21. A cam drum 14 on the shaft 11 is provided with pins or screws 66 which are so positioned that, when the shafts and cams are operating correctly, one of the pins will engage an extension of a plate 57 and rock a lever 54 about its pivot 55. Rocking of the lever 54 causes a pin thereon to engage the forked arm 44 of a lever 43 and swing the other arm 42 so that it moves a lever 38 into the position shown in Fig. 4. When the shafts are out of phase the absence of a pin 66 leaves the rod 38 in a position in which a lug 63 will be engaged by a pin or screw 62 on the drum 7, whereupon the rod 38 will be lowered and an arm 35 thereon will engage a detent 26 to effect stoppage. The detent 26, Fig. 5, is pivotally mounted on an auxiliary bracket 271 on the belt shipping bracket 27 and is normally held by the engagement of a notch 29 with a plate 30. When the detent is lowered the bracket 271 is free to move under the influence of a spring 31 and carry the belt from the fast to the loose pulley. The stop motion may be used in combination with another stop motion (not shown) which includes the detent 26 and belt shipping mechanism 27. Specification 20101/09, [Class 74 (ii), Knitting &c.], is referred to.
Patent GB-1377787-A (GB)
Title: Aminopropanol derivatives
IPC: C07C215/20
Filed: 1972-02-15
Abstract: 1377787 Aminopropanols SANDOZ Ltd 15 Feb 1972 [17 Feb 1971 21 Dec 1971] 6925/72 Heading C2C Racemic and optically active 2-amino-3- (chloro- and dichlorophenyl)propanols and their salts are prepared by reducing a corresponding C 1-4  alkyl (chloro- or dichlorophenyl)alanate, optionally followed by salt formation and/or resolution. These compounds are anorectics and antidepressants, and may be administered in the form of pharmaceutical preparations containing them in association with a carrier.
Patent GB-374139-A (GB)
Title: Improvements in or relating to web roll controlling mechanism
IPC: B65H19/18
Filed: 1931-03-05
Abstract: 374,139. Feeding webs. HOE & CO., Ltd., R., 109, Borough Road, London.- (Hoe & Co., Inc., R.; 138th Street, New York, U.S.A.) March 5, 1931, No. 6927. [Class 100 (i).] In a device for controlling the running, web-roll of a. printing-machine, an endless band is pressed into contact with. the surface of the roll and is driven by the. roll, a friction drum and band controls the speed of the endless. band, and the tension of the friction band is controlled by a floating roller resting in. a loop of the web so that an increased slack in the web causes a braking effect and vice versa.. The roll W1, Fig. 1, is supported on two arms 15, which can. slide on the shaft 14, and a second, roll W2 is mounted at the opposite end of the arms so that it can be swung into feed position. The endless hands 32 pass round the rollers 33, 34, 35. The rollers .35 are mounted, resiliently on the baseplate by means of bearings 36 carried by arms 38, pivoted to the axle 42 and bearing the. weights 44. The rollers 33, 34 along with the web-guiding rollers are carried on a frame 26 mounted underneath the inking and printing part of the machine. The shaft of the roller 33 carries a friction. drum 45. The web, after leaving the roll W1, passes over the. guide rollers 19, 21, 23 and under the floating roller 22. The roller 22. is mounted on arms 24 pivoted to the frame 26, one of the arms 44 carrying a rod. 29 on which. slides an adjustable, weight 31. The roller 22 is thus on the long arm of a weighted lever, to the short arm of which is connected by the poppet 49 and the spring tension device 52, the friction band 46, which, after passing round the drum 45 is secured to the frame. Thus the tension of the web controls the motion of the bands 32, and their braking effect on the web-roll. A modification of the device has bearings for three web-rolls, but in either case the device is arranged so that when the roll W1 is nearly exhausted it may be swung downwards, in such a manner that the roll W2 comes into contact with the running web and the pasting of one web to the other and the cutting of the web W1 can be carried out in the usual manner. For preventing slipping of the band 32 on its drum, holes 63 in the band engage sprocket-like projections 62 on its drum 61.
Patent GB-709976-A (GB)
Title: Improvements in or relating to a method of fixing tiles and the like
IPC: C04B41/47
Filed: 1952-03-18
Abstract: 709,976. Securing tiles &c. to walls. BIRBECK, T. Dec. 31, 1952 [March 18, 1952], No. 7020/52. Class 20 (4) A method of fixing tiles upon brickwork, concrete, metal, wood, glass, or plaster surfaces, comprises applying a layer of aqueous bituminous material consisting of substantially 62 per cent bitumen, 2 per cent clay, and 36 per cent water to the rear surface of the tile, and thereafter forcing the latter against the surface. The bituminous material is applied to the back of the tile as a ribbon about inch wide by # inch thick either from an orifice of a collapsible tubular container or from a container under pressure which delivers the bituminous material through a flexible hose to a gun which on releasing the trigger delivers the material through a rectangular orifice. Surplus bituminous material is removed by a trowel, the joints between the tiles being subsequently grouted with cement slurry. When affixing tiles to exterior work the bituminous material is spread completely over the back of the tile to a thickness of # inch with a slight concavity in the middle of the layer. After surplus material has been removed the joints between the tiles are filled with a grout consisting of the bituminous material and cement.