baber/WOPTO huggingface dataset:
Patent GB-803868-A (GB)
Title: Pinions
Inventor: EVANS ROGER CHARLES ADIE
IPC: F16H55/10
Filed: 1956-01-25
Abstract: 803,868. Toothed gears. ADIE & NEPHEW, Ltd., C. J. Dec. 12, 1956 [Jan. 25, 1956], No. 2433/56. Class 80 (1).  A toothed pinion, particularly for use in a cycle bell mechanism, is formed by corrugating the wall of a sheet metal cup with a hole in its base to form teeth 4, a cylindrical wall portion 5 being left. The pinion is preferably formed by a single pressing operation from a circular blank.
Patent GB-729746-A (GB)
Title: Improvements relating to diazotype processes and materials for producing photomechanical printing plates
IPC: F21V17/02
Filed: 1952-01-29
Abstract: Diazonium salts are coupled with 5 : 6 : 7 : 8-tetrahydro-naphtholsulphonic acids, e.g. diazotized p-nitraniline with 5 : 6 : 7 : 8-tetrahydro-2-naphthol-3-sulphonic acid.ALSO:Arylamides and aryl esters of 5 : 6 : 7 : 8-tetrahydro - 2 - diazonaphthol - (1) - ar - sulphonic acids and 5 : 6 : 7 : 8-tetrahydro-1-diazonaphthol - (2) - ar - sulphonic acids are made as follows: 5 : 6 : 7 : 8-tetrahydronaphtholsulphonic acids are coupled with diazonium salts and the resulting azo dyes reduced to tetrahydro-aminonaphtholsulphonic acids; the latter are either diazotized, converted into sulphochlorides and reacted with arylamines or phenols, or converted by means of phosgene into tetrahydro-naphthoxazolone-sulphonic acids, and thence via the sulphochlorides into sulphonarylamides; the oxazolone ring is then opened with alkali and the tetrahydroaminonaphthol - sulphonarylamides diazotized.  Examples show the preparation of the following: (1) 5 : 6 : 7 : 8 - tetrahydro - 1 - amino - 2-naphthol-3-sulphonic acid, 4 : 5 : 6 : 7-tetrahydro - naphthoxazolone - 9 - sulphonic acid, 9-sulphochloride and 9-N-ethyl-sulphonanilide, 5 - 6 : 7 : 8 - tetrahydro - 1 - amino - 2 - naphthol - 3 - (N - ethyl - sulphonanilide) and diazo compound; (2) 4 : 5 : 6 : 7 - tetrahydronaphthoxazolone - 9 - (N : N - diphenylsulphonamide), 5 : 6 : 7 : 8 - tetrahydro - 1-amino - 2 - naphthol - 3 - (N : N - diphenylsulphonamide) and diazo compound; (3) bisamide from 4 : 5 : 6 : 7-tetrahydro-naphthoxazolone - 9 - sulphochloride and 2 : 5 : 21 : 51-tetraethoxy - 4 : 41 - diamino - triphenylmethane, N : N1 - di - (5 : 6 : 7 : 8 - tetrahydro - 1 - amino - 2 - naphthol - 3 - sulphonyl)-2 : 5 : 21 : 51 - tetraethoxy - 4 : 41 - diamino triphenylmethane and bis-diazo compound; N : N1 - di - (5 : 6 : 7 : 8 - tetrahydro - 1-amino - 2 - naphthol - 3 - sulphonyl) - benzidine; (4) 5 : 6 : 7 : 8 - tetrahydro - 1 - diazo - 2-naphthol-3-sulphonic acid, -sulphochloride and bis-esters with 4 : 41-dihydroxydiphenyl and 4 : 41 - dihydroxy - diphenylsulphone; (5) 5 : 6 : 7 : 8 - tetrahydro - 2 - amino - 1 - naphthol-4-sulphonic acid (by catalytic reduction of 2 - nitro compound), 6 : 7 : 8 : 9 - tetrahydronaphthoxazolone - 5 - sulphonic acid, 5 - sulphochloride and 5 - (N - ethyl - sulphonanilide), 5 : 6 : 7 : 8 - tetrahydro - 2 - amino - 1 - naphthol - 4 - (N - ethyl - sulphonanilide) and diazo compound; (6) 5 : 6 : 7 : 8-tetrahydro-2 - diazo - 1 - naphthol - 4 - sulphonic acid, 4-sulphochloride and ester with 4-hydroxyphenyl; (7) as in (6) forming the bis-ester with 4 : 41-dihydroxydiphenyl.
Patent GB-524217-A (GB)
Title: Improvements in or relating to anti-halation layers for photographic material
IPC: G03C1/835
Filed: 1939-01-24
Abstract: 524,217. Photographic anti-halation layers. DU PONT FILM MANUFACTURING CORPORATION. Jan. 24, 1939, No.. 2458. Convention date, Jan. 25, 1938. [Class 98 (ii)] [Also in Group IV] A non-tacky anti-halation layer especially useful for roll films in cartridge form comprises a water-soluble partially hydrolyzed polyvinyl ester, a water-soluble sulphate of an aliphatic monohydric alcohol containing at least eight, and preferably twelve to eighteen, carbon atoms, and an anti-halation dye or pigment or a mixture thereof. The ester may be commercial polyvinyl alcohol (partially hydrolyzed polyvinyl acetate), or a water-soluble gummy product prepared in known manner by hydrolyzing a vinyl ester polymer such as polymerized vinyl acetate by heating it with water and a mineral acid such as hydrochloric acid. The water-soluble sulphate is preferably a mono-sulphuric acid ester or a salt thereof ; examples given are sodium octyl sulphate, potassium decyl sulphate, sodium dodecyl sulphate, sodium hexadecyl sulphate, sodium oleyl sulphate, ammonium octadecyl sulphate, the diethyl cyclohexylamine salt of dodecyl sulphate, the triethanolamine salt of technical octadecyl alcohol sulphate, trimethylaminedodecyl sulphate, cyclohexylamine-octadecyl sulphate, piperidinehexadecyl tetraethyl-ammonium dodecyl sulphate, or mixtures thereof. Also homologous mixtures may be used, e.g., the sodium salts of the sulphated alcohols obtained from the hydrogenation of cocoanut oil (a mixture of octadecyl, dodecyl, tetradecyl, and hexadecyl alcohols). The dye or pigment is preferably water-soluble or water dispersible ; numerous examples of dyestuffs are given, and as mixtures (1) Prussian blue and manganese dioxide, (2) Fuchsine, Rhodamine, and acid green are mentioned. The coating material is prepared by dissolving the ingredients in water, or a mixture of water and a water-miscible solvent, e.g., methanol, ethanol or acetone. Ranges for the relative proportions of the ingredients are stated and specific examples are given comprising (1) polyvinyl alcohol, sodium dodecyl sulphate, Alkali Blue, alcohol and water, (2) polyvinyl alcohol, sodium olecyl sulphate, Nigrosine, alcohol and water. Reference is made to the addition of Saponine and Turkey red oil to anti-halation layers. The Specification as open to inspection under Sect. 91 refers to U.S.A. Specification 1,971,951. This reference does not appear in the Specification as accepted.
Patent GB-548200-A (GB)
Title: Rubber and metal units for resilient mountings, couplings and the like
IPC: F16F1/54
Filed: 1941-02-26
Abstract: 548,200. Resilient connections. METALASTIK, Ltd., and GOLDSCHMIDT, M. Feb. 26, 1941, No. 2619. [Class 108 (iii)] A resilient mounting or coupling element consists of two metal parts, one with arms b projecting inwardly from a squared centre g by which it is mounted and the other with arms d projecting outwardly from its centre, the arms facing one another when the metal parts are arranged coaxially and being united by rubber blocks e bonded thereto. The inner member may be pressed out from a sheet metal blank which forms the outer member as shown in Fig. 5. The two members may be spaced apart but coaxially as shown in Fig. 2, with the inward projections b facing the outward projections d and with rubber blocks e between them. The projections may be turned at an angle so the plane of the members as shown in the upper and lower parts of Fig. 7 and may be curved in either or both directions. These or any other number of arms may be provided.
Patent GB-284465-A (GB)
Title: Improvements in or relating to brakes for motor cycles
IPC: B62L3/00
Filed: 1927-01-29
Abstract: 284,465. Pleasant, W. Jan. 29, 1927. Band or coil; shoes acting on drums. - The brake drum and drum closing disc or anchoring plate on the front wheel of a motor cycle are coned to facilitate their application to forks of the kind in which the axle e, Fig. 1, is carried by trailing links l pivoted to the ends of the forks j and controlled by rods m, the upper ends of which are connected to the fork by springs. The brake drum a<1>, Fig. 2, is dished at a<3> to enable it to fit on the end of the hub b and is provided with a spoke flange a<2> lying in the plane of the original spoke flange removed from the end of the hub. The anchoring disc c is also coned at c' and is free to oscillate on a bush d secured to the axle e; it is provided with an arm i connected to the fork by a link j<1>. An expanding band a' is secured at one end to an adjustable pin f and is operated at the other end by a cam or the like on a spindle h<1> controlled by a lever h<2> and Bowden mechanism k, k<2>. The axle e may be arranged at the front end of the links l or at the angle of bell-crank-levers replacing the links.
Patent GB-234412-A (GB)
Title: An improved clothes-peg bag
IPC: D06F53/00
Filed: 1925-01-30
Abstract: 234,412. Hendrie, K. G. P., Hendrie, L. T. J., and Clements, J. Jan. 30, 1925. Addition to 217,862. Fabric bags.-The free ends of the wire hanger described in the parent Specification are bent outwaredly at 13 and formed into inturned ends 10 adapted to be engaged in the bored ends 9 of a removable bar 8 inserted in a hem 7 formed at the upper edge of the bag. A loop 16 may be formed in the cross-bar of the hanger. The bag preferably is formed with an opening 17 extending across the entire width.
Patent GB-1221630-A (GB)
Title: Improvements in or relating to sludge centrifuges
Inventor: NELSON KURT
IPC: B04B1/18
Filed: 1970-01-20
Abstract: 1,221,630. Centrifugal separators. ALFALAVAL A.B. 20 Jan., 1970 [22 Jan., 1969], No. 2717/70. Heading B2P.  In a sludge centrifuge, the level of sludge 10 in the sludge space of the rotor 1 is indicated by means of an indicating channel 19 which extends inwardly from the sludge space towards the centre of the rotor and is connected to means for sensing clogging of the outer end of the channel by sludge, the channel wall having an opening 24 (or 25, 25a or 32) into the separating space 8 of the rotor which opening is closer to the axis of rotation than the outer end of the channel. In Fig. 1 separated liquid flows from the inner edge of a disc set 9 into a paring chamber 16 and out through an outlet 18 via a stationary paring disc 17. The channel 19, which may consist of one or more pipes or of a disc interspace divided by radially extending ribs, opens into a paring chamber 20 in which is located a stationary paring disc 21 connected to a pipeline 22 fitted with a pressure gauge 23. In operation, liquid to be purified fills the space 8 and the channel 19. Since liquid flow is small in the part of the channel situated radially outside the opening 24 and is nil in the part situated radially inside, the sludge in the indicating liquid is rapidly separated out and consequently the indicating liquid is lighter than the liquid in the space 8. Owing to this the level 27 of the indicating liquid in chamber 20 will be closer to the axis of rotation than the level 26 of the separated liquid in the chamber 16. The indicating liquid has the same pressure as the separation liquid at the mouth of the channel 19 but a higher pressure at the level of opening 24, so that indicating liquid flows out through the opening 24, into the space 8 and a corresponding amount of separation liquid flows into the channel through its mouth. When sludge has accumulated at the mouth, liquid flow in channel 19 is interrupted. The indicating liquid pressure and the separation liquid pressure will therefore be the same on both sides of the opening 24. Thus indicating liquid will flow through the radially inner part of channel 19 out into the space 8 through the opening 24 so that level 27 will be displaced and this displacement is indicated by the gauge 23. In Fig. 2 the pipeline 18 is hermetically connected to the rotor through a seal 29. The inner channel end has the form of a central space 30 into which the pipeline 22, fitted with a venting hole 31 and a pressure gauge 23, opens through a seal 29. A reduction of pressure in the space 30 is caused where sludge accumlates at the outer end of the channel 19.
Patent GB-489636-A (GB)
Title: Carrier wave transmission systems
IPC: H03D3/00
Filed: 1937-01-29
Abstract: 489,636. Wireless receiving systems; automatic control systems. STANDARD TELEPHONES & CABLES, Ltd. Jan. 29, 1937, No. 2728. Convention date, March 26, 1936. [Class 40 (v)] [Also in Group XXXV] in a receiving system for frequency modulated waves, a portion of the low-frequency output is used to correct for frequency drift and to reduce noise and distortion. A push-pull highfrequency detector 5, with the local oscillator 11, shown of the Barkhausen type, produces a frequency-modulated intermediate frequency which is amplified at 15, and converted at 18 to amplitude modulation by reason of circuits 23, 24, 25, 26 symmetrically off tune. Detectors 28, 29 supply low-frequency to the output transformers 30, 31. If the intermediate frequency drifts slowly, the voltages across resistances 34, 35 become unbalanced, the resulting potential being passed over conductors 43 and a filter 44 to an amplifier 47 and used to vary the anode bias of the B-K oscillator 11 causing its frequency to drift also, and so maintaining the intermediate frequency constant. Alternating potentials corresponding to signals, distortion, and noise, appear across potentiometers 41, 42 and are partly fed back over the same circuit as the frequency-correcting potentials and operate in the same manner, in effect reducing the modulation depth of the intermediate frequency signals. If the modulation depth at the transmitter is now increased to make up for the loss in signal strength, an increased signal-to-noise ratio will result. To reduce distortion, however, it is more advantageous not to increase the depth of modulation but to use an A.F. amplifier 32. In a modification, Fig. 2 (not shown), the frequency - correcting and audio - frequency potentials are fed back over separate paths enabling separate control of the two effects.
Patent GB-1454117-A (GB)
Title: Process for the manufacture of potassium phosphates
IPC: C01B25/46
Filed: 1974-01-21
Abstract: 1454117 Potassium phosphates DEAD SEA WORKS Ltd 21 Jan 1974 [22 Jan 1973] 02787/ 74 Heading C1A Potassium phosphates are produced from potassium-bearing brines by selective precipitation of potassium as an insoluble or slightly soluble salt KA with a reagent containing the anion A- having the characteristics such that (1) KA is only slightly soluble in water or saline solutions whereas the corresponding salts of Na, Ca and Mg are very soluble, (2) A- has a higher affinity than H 2 PO 4 - and HPO 4 -- for liquid anion exchangers; thereafter the salt KA is converted to potassium phosphate by reacting with phosphoric acid in one or more steps of liquid anion exchange incorporating an organic amine extractant and an organic diluent, thus giving an aqueous phase of potassium phosphate salt or salts and an organic phase comprising the amine extractant in the form of its salt with the anion A- dissolved in the diluent. The anion A- may be selected from permanganate, perrhenate, chloroplatinate, chlorate, fluoborate, tetraphenylborate or perchlorate. The amine extractant is preferably a tertiary aliphatic amine, or a mixture of such amines, with chain lengths of from 8-12 carbon atoms.
Patent GB-875551-A (GB)
Title: Improvements in centrifugal fans
IPC: F04D29/28
Filed: 1960-01-26
Abstract: 875,551. Centrifugal fans. MACARD SCREWS Ltd. Jan. 26, 1960 [Jan. 27, 1959], No. 2859/60. Class 110 (1). Each impeller blade of a centrifugal fan comprises a radially inner portion 8 welded to the front plate 6 and to the back plate (or the centre plate in the case of a double-inlet impeller). The radially outer portion 13 of each blade is welded between two pads 10 by means of which it is detachably secured by screws 14 to the impeller plates. To change the duty of the fan, the outer portions 13 are replaced by differently shaped outer portions, two such alternative outer portions being shown chain-dotted. Preferably, the pads 10 of the alternative outer portions 13 are identical in shape to those shown and the holes for the screws 14 are also unchanged. The lengths of the outer portions 13 may be varied, or additional lengths may be welded to them. The outer portions 13 and, it may be, the inner portions 8 may be of laminar instead of aerofoil section.
Patent GB-679119-A (GB)
Title: Improvements in and relating to therapeutically active substituted amidines and to processes for preparing the same
Filed: 1949-02-03
Abstract: The invention comprises local anaesthetics consisting of substituted amidines of the general formula <FORM:0679119/IV (b)/1> (wherein R and R1 represent alkyl groups containing together 4-10 carbon atoms, and R11 represents a methyl group (in which case R and R1 are other than n-butyl) or an alkyl group of 3 or 4 carbon atoms), and their salts (e.g. hydrochlorides, hydrobromides, sulphates, phosphates, maleates, succinates or lactates).  The amidines may be prepared by the process of Specification 619,659 by reacting the appropriate a -naphthonitrile with a halomagnesium alkylamide RR1NMgHal and hydrolysing the product.  Examples describe the preparation of N : N-di-n- and iso-propyl-, di-iso- and sec.-butyl- and di-n- and iso-amyl-4-methoxy- and N : N - di - n - butyl - 4 - n - butoxy - 1 - naphthamidine.  The Provisional Specification comprises also the manufacture of derivatives of the foregoing amidines containing bromine or chlorine in the 3-position, and lists examples of these halogen derivatives and further examples of amidines of the general formula above (including N : N-di-n-butyl-4-methoxy-1-naphthamidine, the preparation of which is described in an additional example).  4 - Alkoxy - 1 - naphthonitriles and their 3-bromo and 3-chloro derivatives are obtainable, according to the Provisional Specification, by etherifying a -naphthol with an alkyl iodide in the presence of sodium hydroxide, brominating the product and replacing the bromine atom introduced by a cyano group by the action of cuprous cyanide in pyridine, and, if desired, brominating or chlorinating the resulting 4-alkoxy-1-naphthonitrile in the 3-position.
Patent GB-750460-A (GB)
Title: Method and apparatus for classifying solid materials
IPC: B07B7/02
Filed: 1954-02-01
Abstract: 750,460. Pneumatic separating. REDUCTION ENGINEERING CORPORATION. Feb. 1, 1954 [Feb. 3, 1953], No. 2980/54. Class 117. In a method of classifying solid material a fluid stream is caused to follow a curved path to establish a pressure gradient thereacross, the material being introduced near the area of minimum pressure in a direction parallel to the fluid flow. Thereafter the stream follows a straight path and a second curved path from which part of the fluid and the entrained solid particles are withdrawn. In one embodiment, the semi-circular conduits 20 and 37 ... 44, Figs. 1, 2, are inter-connected by straight tubes 28 ... 36, of which 36 is the outlet for the coarse fraction of the material. The fine fraction is extracted from outlets 45 ... 48 and 54 ... 57, connected by duets 49 ... 52 and 58 ... 61 to discharge manifolds 53, 62, respectively, of which the latter discharges into the former. The fluid is introduced into the system through conduit 21 connected to the curved portion 20 and material from a hopper 27 is injected through a venturi 23 by fluid from a jet 25, the discharge end 24 of the venturi tube 22 being disposed within the curved conduit 20. The material outlets associated with the curved portions of the system may be provided with angularly movable vanes to assist in the classification, Figs. 9, 10 (not shown). Embodiments are described in which three fractions are separated, Figs. 6, 7 (not shown). The shapes and sizes of the various conduits to produce desired pressure gradients and velocity distributions, and the positioning of the inlet and outlet orifices are discussed.
Patent GB-648004-A (GB)
Title: An improved injector device for raising liquids containing matter in suspension
IPC: F04F5/46
Filed: 1947-01-31
Abstract: 648,004. Injectors for raising liquids. VENTURA, E. Jan. 31, 1947, No. 3013. Convention date, Feb. 8, 1946. [Class 71] [Also in Group XXI] An injector device for raising liquids containing matter in suspension, particularly adapted for subaquatic operations, comprises a suction pipe 13 connected to a delivery pipe 4 through a funnel-shaped connecting piece 3, the latter being provided with a number of nozzles 12 projecting slightly into the int e r i o r thereof and branching from an annular collector 9<SP>11</SP> fed from a supply pipe 9<SP>1</SP> with gaseous fluid under pressure, the axes of the nozzles being arranged obliquely to the wall of the connecting piece and preferably inclined upwards so that the jets of gaseous fluid issuing therefrom will import an ascending swirling motion to the liquid being raised. The suction pipe 13 which is flexible for ease of dragging over the sea bed is of substantially the same diameter as the delivery pipe. The latter opens into a box at its upper end provided with a deflecting wall for separation of the gaseous fluid from the liquid.
Patent GB-1200627-A (GB)
Title: Head rest
Inventor: CALDECOTT LEWIS ALBERT
IPC: B60N2/48
Filed: 1967-11-11
Abstract: 1,200,627. Cushions. L. A. CALDECOTT and D. B. CALDECOTT. 11 Nov., 1967, No. 3034/69. Divided out of 1,200,626. Heading A4M. The whole of the subject matter is included in the Parent Specification. The claim relates to the cushion.
Patent GB-650532-A (GB)
Title: Improvements in and connected with moulds for casting metals
IPC: B22C3/00
Filed: 1947-01-31
Abstract: A mould, for casting steel, stainless or otherwise, stainless cobalt chromium or other nonferrous alloys, platinum and its alloys or other high temperature fusing materials, comprises a body of comminuted refractory mixed with an aqueous solution of alkali metal silicate to which has been added an excess of mineral acid and a coating of similar material but without the acid.  The mould may be made by coating a pattern with the above coating material and then applying the body material directly and drying. The binder for the body material may be formed by pouring a standardized solution of sodium silicate into about the same volume of a corresponding solution of hydrochloric acid while stirred so that 100 c.c. when titrated with normal caustic soda required about 8 c.c. using methyl orange indicator.  In other modifications nitric or phosphoric is used instead of hydrochloric acid.  Many refractory materials are mentioned including silica ground to pass a mesh of 200 per inch. The mould may be dried for five hours at 55 DEG  to 60 DEG  C., the temperature then being gradually increased to 25 DEG  C. per hour up to 85 DEG  to 95 DEG  C. and continuing at this temperature for twelve hours.  The mould may then be heated to burn out the wax pattern.  Specification 594,671 is referred to.  The Specification as open to inspection under Sect. 91 comprises also many examples of refractory coating mixes and refers to U.S.A.  Specifications 2,380,945, 2,027,932 and one corresponding to the Specification 601,260.  This subject-matter does not appear in the Specification as accepted.