baber/WOPTO huggingface dataset:
Patent GB-403105-A (GB)
Title: The manufacture of azo dyestuffs
IPC: C09B56/04
Filed: 1932-06-10
Abstract: Direct cotton dyeing azo dyes are made (1) by linking two molecules of the azo dyes derived from diazotised 4 : 4<1>-nitroaminostilbene-2 : 2<1>-disulphonic acid or the corresponding dibenzyl compounds, by a suitable conversion of their nitro groups, e.g. by reduction to azo or azoxy groups or by conversion into the group -NH-X-NH- where X = a bivalent radicle, such as -CO- or cyanuryl or (2) by linking two molecules of the 4: 4<1>-nitroaminostilbene- or dibenzyl-: 2<1>-2 disulphonic acid itself, tetrazotising the intermediate product thus obtained e.g. the dinitrodistilbeneureatetrasulphonic acid or the diaminoazoxydistilbenetetrasulphonic (if necessary after reduction) and coupling with suitable components.  The dyestuffs may be after-treated e.g. by oxidation, reduction, alkylation or formation of metallic complexes.  The following examples are given: (1) the dyestuff 4 : 4<1>-nitroaminostilbene - 2 : 2<1> - disulpho acid--> salicylic acid is reduced with caustic soda and dextrose to the azoxy compound; the same product is obtained by reducing the nitroaminostilbenedisulphonic acid to the azoxy stage, tetrazotising and coupling with salicylic acid, (2) the monoazo dyestuff in (1) is reduced with sodium sulphide and phosgenated, (3) the dyestuff 4 : 4<1>-nitroaminostilbene-2 : 2<1>-disulphonic acid-->N-phenyl J acid or N-(4<1>-hydroxy-3<1>-carboxy)-phenyl J acid is reduced as above, (4) the monoazo dyestuff in (3) is reduced with sodium sulphide and phosgenated, (5) the methylated or ethylated dyestuff 4 : 4<1>-nitroaminostilbene-2 : 2<1>-disulpho acid-->phenol is reduced with caustic soda and dextrose or with caustic soda alone, (6) the monoazo dyestuff of (5) is reduced with sodium sulphide and phosgenated, (7) and (8) the dyestuff 4 : 4<1>-nitroaminostilbene-2 : 2<1>-disulpho acid-->acetoacetic anilide is reduced with caustic soda and destrose to the azoxy compound or with sodium sulphide and treated with phosgene, (9) cyanuric chloride is condensed with 4 : 4<1>-nitroaminostilbene-2 : 2<1>-disulpho acid and the product is reduced, tetrazotised, coupled with phenol, and finally methylated; the same dyestuff is obtained by reducing the methylated dyestuff 4 : 4<1>-nitroaminostilbene-2 : 2<1>-disulpho acid and condensing with cyanuric chloride, (10) diaminoazo-distilbene-tetrasulphonic acid (by reduction of 4 : 4<1>-nitroaminostilbene-2 : 2<1>-disulpho acid with zinc dust and oxidation of the hydrazo-compound formed) is tetrazotised and coupled with phenol and the product methylated, (11) the reduced and methylated dyestuff 4 : 4<1>-nitroaminostilbene-2 : 2<1>-disulpho acid-->phenol is refluxed with the unreduced dyestuff in caustic soda; the product is practically identical with that of (10), (12) the methylated azo dyestuff 4 : 4<1>-nitroaminostilbene-2 : 2<1>-disulpho acid -->1-naphthylamine-7-sulpho acid-->phenol is reduced with caustic soda and glucose.  Dyeings with the above dyestuffs may be after-treated with metal compounds e.g. copper sulphate.
Patent GB-751815-A (GB)
Title: Improvements in or relating to sewing machine clamp mechanism
IPC: D05B3/10
Filed: 1954-06-03
Abstract: 751,815. Sewing-machines. REECE CORPORATION. June 3, 1954 [March 15, 1954], No. 16491/54. Class 112. In a sewing-machine adapted for stitching together a short end part and an underlying fabric part, means are provided for wiping the end part flat against the underlying part and holding it flat while the parts are being stitched together. The machine is adapted to secure together end tabs 7 and 12 to the folded centre portion 8 of a piping patch for a piped buttonhole, tab 7 being part of the patch and tab 12 being part of the material 2 in which the buttonhole is formed. The feet 32 of a yoke-shaped clamping-member 31 bear upon the outer portions 3, 4 of the patch while a wiping member 40, actuated by the starting mechanism prior to the operation of the stitching mechanism, moves forwardly to engage the tabs and then rearwardly and downwardly to press the latter against the portion 8, when the stitching mechanism operates to secure the tabs to portion 8 by a seam 15. Member 40 is carried by an arm 45 pivoted at 41 to the upper end of an arm 42 pivoted at 43 to the base of the machine. A leg 44, which is pivoted at 46 between ears 48 provided on arm 45, passes through an elongated slot 47 in the latter and bears against the work-table 35. The leg 44 is biased forwardly by a spring 50 and downwardly by a spring 51. The lower end 57 of arm 42 is embraced by the yoke end 55 of an arm 56 pivoted at 78 to the base of the machine, a spring-biased member 72 being pivoted at 73 to the opposite end of arm 56. The starting mechanism includes a member 70 which moves to the left when the machine is started. A finger 71, carried by member 70, then engages member 72 to pivot arm 56 against the bias of a spring 80, and thereby pivot arm 42 in the clockwise direction to carry member 40 over the tabs. Leg 44 engages an abutment 60 and is thereby moved rearwardly to allow spring 51 to pivot arm 45 downwardly for engaging member 40 with the work. Member 72 then rides over finger 71 and strikes an abutment 83 on the latter, whereby member 40 makes a short wiping movement rearwardly to the position shown in Fig. 12. Seam 15 is then sewn and the machine is stopped, when member 70 moves to the right to allow spring 80 to return arm 56 to its original position, whereby leg 44 engages an abutment 61 and moves forwardly to raise arm 45 to its original position.
Patent GB-879285-A (GB)
Title: Improvements in and relating to radial-piston hydraulic pumps
IPC: F04B1/053
Filed: 1958-06-22
Abstract: 879,285. Reciprocating pumps. FRASER, A. Sept. 22, 1959 [June 22, 1958], No. 16558/58. Class 102(1). A radial-piston pump comprises hollow pistons 17 having a spring loaded suction valve 21 on their outer face such that the outer face presents a substantially unapertured surface when the valve is closed. An outlet valve 27 is provided for the head of each cylinder 24 such that when the valve is closed the cylinder head presents a substantially unapertured surface towards the piston. The pistons engage the surfaces 19 of a polygon which surrounds an eccentric 20 of the drive shaft 16, the eccentric being provided with ports 51 to admit liquid to the cylinders from an inlet 49. The outlets of each cylinder communicate by bores 32 with annular passages 33, 34. The pistons are preferably stepped and the cylinder provided with a liner 26 to provided variable volume chambers communicating by bores 57 with annular passages 58, 59 filled with liquid so that the discharge stroke of some of the pistons causes the liquid to act on the other pistons to provide the return stroke. In a modification the pistons are mechanically connected to the polygon 19.
Patent GB-226439-A (GB)
Title: Improvements in or relating to book markers
IPC: B42D3/14
Filed: 1923-06-26
Abstract: 226,439. Manton, G. W. June 26, 1923. Book-markers. - Relates to book-markers of the kind comprising a spring clip provided with one or more flexible ribbons or cords carrying place indicators. The clip shown in Fig. 1 consists of two spring blades a, b riveted together and provided with holes e through which the cord f is threaded' and can be adjusted, two indicators g being fixed on the cord. The clip shown in Fig. 4 consists of integral spring blades a, b connected by a curved spring portion i enclosing a split bush for fixing the cord f, two indicators g being adjustable along the cord. The indicators g are preferably distinctively coloured, and are provided with a pointer g<1> and two holes for threading on the cord; the indicators may be fixed in position by knotting the ends of the cord, which in the arrangement shown in Fig. 1 is in three pieces f, f<1>, f<2>.
Patent GB-861151-A (GB)
Title: A device for inserting objects into evacuated chambers
IPC: H01J37/18
Filed: 1959-05-14
Abstract: 861,151. Electron microscopes. TESLA NARODNI PODNIK. May 14, 1959 [May 15, 1958], No. 16583/59. Class 39(1). A cartridge 17 containing the object for insertion in an electron microscope 10, slides in a transverse bore 16 of a first rod 12 under the control of a guide pin 19 moving in a slot 23 of a spring urged slide 22 moving, within limits defined by a pin 24, along the flat face of a holder 15 located within the bore of the rod 12. In order to change the object under examination, a second rod 11 is brought into screwed engagement at 27, 28 with the rod 12 thereby moving slide 22 to the left, as shown, and by raising the pin 19, lifting the cartridge into the bore 16. Both rods are then slid together to the right enabling the cartridge to be removed, the seal being preserved by the left hand end of the rod 12. A control knob is provided on the rod 11 to permit sliding and rotational movements within the desired limits, suitable packing and safety-locks being provided.
Patent GB-786667-A (GB)
Title: Iridescent flake and material
Inventor: SOBEL SOL
IPC: B44F1/14
Filed: 1955-06-09
Abstract: Iridescent flake, which may be dispersed throughout a carrier body composed of light transmissive plastic material to form e.g. umbrella handles, spectacle frames, beads for necklaces &c., comprises a plastic layer at least one of which carries a minimum of two metallic (defined to include metallic compound) films separated by a layer of light transmissive plastic material, arranged so that one surface of the flake is formed by a light transmissive metallic film overlying a light transmissive plastic layer or vice versa.  Three examples of the production of flake are disclosed in which (1) a cellulose acetate or nitrate layer is rubbed on both sides with a cloth dusted with bismuth oxychloride (or oxyiodide) so as to deposit a transparent film of the compound, is then coated on both sides with nitrocellulose (or with styrene polymer in the case of oxyiodide) and is finally provided with a further film of bismuth compound, (2) a film of aluminium is deposited by vacuum deposition on to a regenerated cellulose layer, is then coated with methyl methacrylate, and finally with bismuth compound as in (1), and (3) a film of gold is deposited by vacuum deposition on to a polyvinyl alcohol layer, is then coated with ethyl cellulose, and finally with bismuth compound as in (1).  Two examples are disclosed of the incorporation of flake into carrier bodies composed of allyl polyester resin and unsaturated polyester in styrene.  Many examples are given of thermosetting and thermoplastic resins which may be used to form the flake and the carrier body.
Patent GB-331066-A (GB)
Title: Improved compressed air spring or accumulator particularly applicable to the elevating-gear of guns
IPC: F41A27/30
Filed: 1929-05-30
Abstract: 331,066. Jackson, L. Mellersh-, (Aktiebolaget Bofors). May 30, 1929. Moantings.-A compressed-air spring aceumulator, particularly applicable to equalizing the load on a gun-elevating gear, has its air-space charged with a material such as woven metal or metal wool which will readily take up the heat of compression and restore this beat on subsequent expansion, the pressure changes being thereby rendered isothermal rather than adiabatic. In the accumulator shown, the material F occupies the cylinder A and the interior of the 'hollow piston C. The cylinder is supplied with compressed air through an opening e<1> fitted with a valve.
Patent GB-937077-A (GB)
Title: Means for feeding continuous stationery assemblies in typewriting machines
Inventor: TONKS GEORGE HARRY
IPC: B41J17/06
Filed: 1961-05-09
Abstract: 937,077. Typewriters. GRAPHIC TECHNOLOGY Ltd. Aug. 7, 1962 [May 9, 1961], No. 16753/61. Class 100 (4). Paper and matrix carriages and supports; paper, card, web-feeding, clamping and guiding arrangements.-In a typewriter, apparatus for feeding continuous stationery assemblies including record webs interleaved with carbon webs which are fed at a lower speed than the record webs comprises a feed tray 13, Fig. 1, supporting a pack 12 of record webs 16, which are advanced over a feed roller 15 in a downward direction 17 to pass through guide rods (not shown) between side plates 10, where the record webs are interleaved with carbon webs drawn off rolls 18. The complete stationery assemblies are advanced around the platen 11 by endless tractor bands or chains 22 having pins mounted thereon and the record assemblies are then passed over feed rollers 14 and 15 in the direction 23. Ink-ribbon mechanism.-The slower forward feed of carbon webs is controlled by a gear arrangement contained in a housing 24, Figs. 1 and 2, the carbon webs being also periodically withdrawn rearwardly so that as the record webs are fed forwardly the friction between the record and carbon webs is reduced to prevent binding of the webs round the platen. The carbon webs drawn off the rolls 18 mounted on shafts 19 are released in small increments by small angular rotations of shafts 26 imparted by a cross-shaft 29, through helical gears 36, the shaft 29 being rotated by a worm (not shown) on a shaft 37 in turn rotated by a ratchet wheel 46 actuated by a solenoid 52, which receives its operating pulse from the typewriter on completion of a printing operation. The small increments are then drawn, during forward feed of the records webs, by friction between the webs passing around the platen, and the frictional force exerted on the carbon webs tends to rotate the shafts 19 and the helically toothed gears on the shafts 26 to drive their corresponding gears 36. The helical arrangement of the gears thus causes the shaft 29 to move slidingly downwards, whereupon an actuating arm 42 mounted on the shaft 29 engages an arm 33 of a microswitch 31, which energizes a solenoid 30 to immediately attract the shaft 29 upwardly. The upward movement of the shaft 29 causes the shafts 26 and 19, owing to the helical arrangement of the gears, to be driven in a reverse direction so as to withdraw the carbon webs rearwards. For manual setting up of the feeding apparatus, when the carbon leaves are being initially interleaved, the shafts are provided with knobs 28 and the shaft 29 is moved out of gearing engagement by a knob 34 and retained in an upward disengaged condition by a pawl 61 (Fig. 5, not shown), engaging a collar 56.
Patent GB-680049-A (GB)
Title: An improved device for connecting tubes or pipes end to end
Inventor: FRANKLIN HARRY STANLEY
IPC: E04G7/20
Filed: 1950-07-05
Abstract: 680,049. Tube joints. STEEL SCAFFOLDING CO., Ltd. July 5, 1951 [July 5, 1950], No. 16841/50. Class 99 (i). In a device for connecting tubes, particularly tubular scaffolding, of the kind in which a longitudinally divided twopart spigot 2, 3 is expanded to grip the tubes, the expanding means comprises a bolt having a head 10 and a shank 12 screwing into a hole 7 in the spigot part 2, the end 11 of the shank which screws into the spigot part 3 having a thread of opposite hand and a reduced diameter, so that it may pass through the hole 7 when the parts are assembled. A pin 13 keeps the spigot parts in alignment and limits its contraction, the end of the bolt being flush with the exterior of the part 3 in the limiting position.
Patent GB-471281-A (GB)
Title: Improvements in sanitary closets
IPC: B64D11/02
Filed: 1936-06-17
Abstract: 471,281. Sanitary closets. GALPIN, B. W., and IMPERIAL AIRWAYS, Ltd. June 17, 1936, No. 16846. [Class 26] A closet comprises a pan which discharges into a tank containing a flushing liquid, and a pump of which the suction pipe depends into the tank and of which the delivery pipe is connected to the flushing channel. In Fig. 1, filter plates 4 divide that part of the tank 3 into which the closet discharges from that from which the pump withdraws; the pump 8 is of the semi-rotary type, and the suction pipe 9 may carry a further filter device 16. The pan 6 and the pipe 9 are carried by the cover 5 of the tank which is integral with an upright plate 7, which carries the pump 8 and which is hinged at 12 to a fixed support 13 to facilitate removal of the tank. In Fig. 3, the pump 29 is of the lift-type, and the pan has a weighted hinged flap 26; they are both carried by the removable cover 25 of the tank secured by catches 39 to an annular seating 38. The tank 18 which has a handle 19 is contained within a circular tank 17, and the filter plates are removably held in guides 23. The pump, which has a handle 40, may be operated by a pull-chain passing over a pulley.
Patent GB-972279-A (GB)
Title: Improvements relating to washing machines
Inventor: DUNN HAROLD GEORGE
IPC: D06F37/30
Filed: 1960-05-12
Abstract: 972,279. Change-speed gear; ratchet clutches; universal joints. HOOVER Ltd. May 4, 1961 [May 12, 1960], No. 16872/60. Headings F2C, F2D and F2U. [Also in Division D1] Drive mechanism for a washing and spin drying machine (see Division D1) comprises two pulleys 45, 46 driven in opposite directions at different speeds by a reversible electric motor 49, each pulley freewheeling when rotated in one direction, but being connected to a tubular shaft 25 by means of one of a pair of roller clutches 47 when rotated in the opposite direction. Shaft 25 carries the washing machine tub 11 and surrounds a shaft 36 carrying an impeller 12. Pulley 46 can be drivingly connected to the impeller shaft 36 through a coil clutch spring 70 when not driving the tub shaft 25. Thus, pins 60 on the pulley 46 extend into P.V.C. bushes 61 in a plate 62 secured to a bush 63. The spring 70 surrounds the bush 63 and a second bush 67 keyed to the shaft 36. During spin drying, the impeller is not driven because the bush 63 tends to unwind the spring 70. By reversing the motor direction (for washing) the spring 70 is tensioned and the impeller is driven at high speed, the tub being rotated slowly by the pulley 45 and its roller clutch. The impeller drive can be disconnected by energizing a solenoid 80 (Fig. 3) so as to bring a detent 74 on a pivoted arm 75 into line with a projection 73 on a cap 69 to prevent rotation of the cap. The end 71 of the spring extends through a hole in this cap. Each roller clutch comprises a bearing sleeve 43 with two diametrically opposite slots 101 (Fig. 8) co-operating with flats 104 on a drive sleeve 41 and containing a roller 107. The rollers 107 are biased by bowed leaf-springs 106 and transmit drive from the pulley hub 100 or freewheel according to the direction of rotation of the pulley. The pulley 46 is driven through a pulley 51 (Fig. 2) and belt 54, and the pulley 45 is driven in the opposite direction through a worm reduction gear 56, a pulley 55 and belt 57. Belt 54 passes over idler pulleys 52, 53. In a modification (Figs. 5, 6, not shown) the pulley connected to pulley 46 is arranged at right-angles to the motor shaft and connected thereto by a flexible drive-shaft. Specifications 877,429, 893,879 and 972,278 are referred to.
Patent GB-257233-A (GB)
Title: Shaking table for the pneumatic sorting of granular materials
IPC: B03B4/02
Filed: 1926-07-06
Abstract: 257,233. CoppÚe et Cie, E. Aug. 19, 1925, [Convention date]. Separating by shaking-apparatus; pneumatic separating. - Relates to separating machines of the kind comprising a perforated table which is rapidly reciprocated in a direction at right angles to the flow of material over it and through which a current of air is passed in an upward direction so that the combined action of the jigging movement and air pressure stratifies the materials according to density, ribs being provided on the upper surface of the table, in the direction of its jigging movements, and consists in the provision of means for varying the longitudinal and transverse inclination of the table comprising an axis, parallel to the direction of reciprocation, about which the table pivots, of separate air chambers independently controlled under the table, and of ribs the height of which decreases both longitudinally and transversely of the table. The frame 5 carrying the table is reciprocated by eccentrics 6 on a shaft 7 driven by variable speed gear and is mounted on links 2, 3, the latter of which is adjustable. The table 10 is carried on the frame by a longitudinal shaft 11 about which it swings to vary the transverse inclination. The shape of the perforated part of the table top is shown in Fig. 1, the sides 27, 28 being inclined in the direction of flow of the lightest and heaviest particles, and provided with adjustable boards. The ribs 22 decrease in size longitudinally and also decrease in height transversely of the table from the upper to the lower side. The air chamber 15 is divided into compartments 16, each provided with ports 17 controlled by slide valves 18 operated by a rod 19.
Patent GB-389691-A (GB)
Title: Improvements in and relating to electric circuit breakers
IPC: H01H71/24
Filed: 1932-06-15
Abstract: 389,691. Automatic circuit-breakers; oil-break switches. BRITISH THOMSONHOUSTON CO., Ltd., Crown House, Aldwych, London.-(Assignees of Paul, W. E. ; 2279, Grand Boulevard, Schenectady, New York, U.S.A.) June 15, 1932, No. 16941. Convention date, June 15, 1931. [Class 38 (v).] To enable an oil or other circuit-breaker to open very rapidly when tripped, the spaced cross-bars 1 carrying the moving contacts are releasably connected to the operating rod 2 carrying them. The rod 2 carries a pair of plates 13 between which are pivoted at 12 a pair of latches 11, rollers 19 on which engage projections 18 on members 16 secured to the cross-bars 1. The latches are formed with armatures 22 adapted to be attracted on overload by U-shaped magnetic straps 21 secured to the plates 13 and straddling the cross-bars 1 so as to be energized by the current therein. Springs 14, the upper abutments 15 of which are secured to the rod 2, impart a rapid movement to the cross-bars, the travel of which is designed to clear the circuit, but the rod 2 is also tripped and in descending resets the latches so that the breaker is ready for reclosing. Spring buffers 23 absorb the opening shock.
Patent GB-356244-A (GB)
Title: Improvements relating to reflectors, refractors, diffusers, and the like for illuminating purposes
IPC: F21V7/08
Filed: 1930-06-02
Abstract: 356,244. Illuminant enclosures. EDISON SWAN ELECTRIC CO., Ltd., 123, Queen Victoria Street, London, and WHEAT, H. C., Bloxham, West Drive, Harrow Weald Park, Middlesex. June 2, 1930, No. 17020. [Class 75 (ii).] A reflector, refractor, or diffuser consists of a unitary member wholly or in part composed of transparent, translucent, or reflecting material, the external shape of the member being that of the surfaces of a plurality of ellipsoids having their major axes disposed at an angle to one another and a source of light at their common focus, the portions only of the ellipsoids adjacent to the common focus and beyond the lines of intersection with one another being removed, part of the globe adjacent to the source of light being shaped for attachment to a supporting device. The Figure shows the case in which an infinite number of ellipsoids is employed, the globe comprising a surface d, e formed by the revolution of an ellipse about an axis passing through the focus b at which the source of light is situated. The overlapping parts of the surface of revolution adjacent the focus b are removed. The parts around the other focus are replaced by a circular portion c, which is opalescent or clear. An opalescent horizontal portion f is added. The parts d, e may be mirrored. In another form, an ellipsoidal globe of opalescent glass has one axis vertical, and a second globe has its axis at an angle to that of the first,. the ellipsoids having a common focus. Parts of the ellipsoids may be mirrored, and parts may be plain or prismatic. In another form, three or more similar ellipsoids may have their axes at equal angles to one another.