baber/WOPTO huggingface dataset:
Patent GB-767494-A (GB)
Title: Improvements in or relating to nail making machines
IPC: B21G3/32
Filed: 1953-09-18
Abstract: 767,494. Forging nails. NATIONAL MACHINERY CO. Sept. 18, 1953 [Sept. 19, 1952], No. 33699/55. Divided out of 767,493. Class 83 (4). In a nail-making machine having a frame 5 with a bore through which wire stock 22 is f@ to wire gripping dies which grip the wire whilst it is being headed by a header 62, a quill 34 is slidably mounted in said bore and has a through passage for receiving the wire stock, the quill being biased by a spring 35 in a direction opposite to the advance movement of the stock and control means 42 operatively connected to said quill, are adapted to stop the machine in response to movement of said quill against the action of said spring. In the event of the stock being jammed in the die, the feed of the wire will continue and cause a loop to be formed at the rear of the quill which will move the quill against the spring 35 thereby causing a pin 37 to fulcrum about its enlarged centre 38 and thus move a pin 40 which actuates the micro-switch 42 controlling the driving motor of the machine. The nail making machine and the stock feed mechanism are of the kind described in Specification 767,493. Specification 767,496 also is referred to.
Patent GB-1097499-A (GB)
Title: Process for making lightweight aggregate
IPC: C04B18/08
Filed: 1965-08-06
Abstract: Lightweight aggregate is produced by pelletizing fly ash, preheating the pellets for between 8 and 15 minutes at a temperature between 1200 DEG  and 1800 DEG  F., and finally sintering, e.g. at a temperature between 1900 DEG  and 2800 DEG  F.  Prior to the preheating step the pellets may be subjected to preliminary heating at 300-1000 DEG  F. for 4-8 minutes.  The products are stated to have a much lower stain index than conventional fly ash aggregates.
Patent GB-771838-A (GB)
Title: Improvements relating to brakes for perambulators
Inventor: SHOTT PERCIVAL
IPC: B62B5/04
Filed: 1954-11-23
Abstract: 771,838. Perambulator brakes. TAN SAD, Ltd. Nov. 14, 1955 [Nov. 23, 1954], No. 33836/54. Class 103 (1). In a brake for a perambulator, a bearing-rod d, disposed centrally and transversely of the frame, of the perambulator, is provided with cranks d<SP>1</SP> and rubber brakepads d<SP>3</SP> on the cranks which co-operate with the wheel tyres b<SP>2</SP>, a hand lever d<SP>5</SP> is connected to one of the cranks and is adapted to co-operate with upward and downward facing catch members e<SP>1</SP>, e adjustably mounted on the frame a, the lower catch member e ensuring maintenance of the brake in its applied position by virtue of the resilience of the tyre and the upper catch member el securing the brake in its released position by virtue of the crank engagement with the spring plate stop (#) on the chassis.
Patent GB-1110591-A (GB)
Title: Improvements relating to tipped cigarettes
Inventor: STERICKER JOHN ARTHUR
IPC: A24C5/47
Filed: 1964-08-19
Abstract: 1,110,591. Filter tipped cigarettes. GALLAHER Ltd. 2 Aug. 1965 [19 Aug., 1964], No. 33909/64. Heading A2C. A filter tipped cigarette has a reinforcing ring 10, e.g. of vinyl paper, stuck to that end of the cigarette paper 6 containing the tobacco rod which is fitted to the filter tip 8. The tip and cigarette length are secured together by a simulated cork sleeve 9. The reinforcing material is applied to the length of cigarette paper in double length and at double cigarette length intervals prior to the formation of a tobacco rod. After the rod has been formed and wrapped it is cut into double cigarette lengths at the centres of the reinforcing sleeves so that each length has a single reinforcing strip at each end. The lengths are then separated and double length filter tips inserted, abutted and joined to form a continuous rod of tobacco and filters. The rod is then cut into individual cigarettes.
Patent GB-389431-A (GB)
Title: Improvements in and relating to hosiery
IPC: D04B9/46
Filed: 1932-11-30
Abstract: 389,431. Knitting. SCHUBERT & SALZER MASCHINENFABRIK AKT.-GES., 11, Lothringerstrasse, Chemnitz, Germany. Nov. 30, 1932, No. 33920. Convention date, Dec. 10, 1931. [Class 74 (ii).] A method for producing hosiery on flat-bed knitting- machines in one operation consists in that, after completing the leg, additional loops extending from x to y are set on, and after working a few courses, widening is performed up to the line c, by transferring selvedge loops outwardly. These courses are followed by others in which an internal narrowing operation is performed, the selvedge loops being unaffected. From the line d onwards the selvedge loops are included in the narrowings. Fig. 3 shows a heel without narrowing or widening lines between the lines c, d.
Patent GB-1040034-A (GB)
Title: Heterocyclic water-insoluble monoazo dyestuffs and a process for their manufacture
IPC: C09B45/00
Filed: 1964-08-19
Abstract: Azo dyes free from water-solubilizing groups and having the general formula A-N=N-B in which A is quinoline residue bound of the azo group in 8-position or a 2-benthiazole residue and B is a 2-phenylaminonaphthalene radical bound in 1-position to the azo group or a radical of formula <FORM:1040034/C4-C5/1> in which R1 and R2 are hydrogen atoms or phenyl radicals are prepared by diazotizing the component A and coupling to B, the dyes may be converted to the metal complexes particularly cobalt, copper, zinc, vanadium, chromium, aluminium and nickel by conventional processes. The coupling may take place in organic solvents, e.g. glacial acetic acid, pyridine, dimethylformamide, benzene or acetone.  The dyes are used for dyeing polyolefines especially polypropylene containing metals as above in green-blue and rose shades.  Reprecipitation from sulphuric acid is employed.
Patent GB-765087-A (GB)
Title: Leathers of deep neutral black shades
IPC: C09B35/46
Filed: 1954-11-23
Abstract: Leather, including chrome leather, is dyed in deep, neutral black shades by applying a dyestuff of the formula:- <FORM:0765087/IV(b)/1> where R is a benzene or naphthalene radical which contains no substituent sulphonic acid group but may be substituted by an alkyl, alkoxy, aryl, aryloxy, nitro, acylamino, amino or carboxyl group or a halogen atom.  Numerous examples are given of the radical R.  The dyestuff is applied in a neutral to weakly acidic aqueous solution. The dyestuff may be prepared by coupling a diazodisazo dyestuff of the formula <FORM:0765087/IV(b)/2> with 1-amino-3-hydroxy-benzene in an acid, neutral or alkaline medium.
Patent GB-381014-A (GB)
Title: Typist's or the like copyholder
IPC: A47B21/04
Filed: 1931-12-08
Abstract: 381,014. Copyholder for typewriters &c. BERNON, A. F., 19, Wilson Street, Finsbury Square, London. Dec. 8, 1931, Nos. 34025/31 and 10471/32. [Class 52 (iii).] A folding copy-holder for a typewriting, comptometer, or other machine consists of a flat base 2 and a frame 1, hinged to its rear edge, and provided with a copy-supporting ledge 12 at or about the height of the upper parts of the machine. The frame 1 is supported by a pair of struts 4 which are pivoted, e.g. at 9 to cross-bars in the frame 1, and may be turned at right-angles to the frame, as shown, and secured by clips 10. The upper parts 6 of the struts form supports for a book or paper edge 12, hinged at 13. A spring paper clamp 14 is also fitted. In modifications, the struts 4 are in the form of a frame pivoted near the middle of the frame 1 so that its lower edge swings backwards to form a strut for the frame ; its upper edge carries, detachably or hingedly, a paper &c. support. A leaf-holder, band, or line indicator may also be fitted.
Patent GB-1004786-A (GB)
Title: Improvements relating to the control of current in electrolytic apparatus
Inventor: WALLINDER JOHN ARNE
IPC: C25D21/12
Filed: 1962-09-05
Abstract: 1,004,786. Automatic current-control systems for battery-charging. CATYLATORS Ltd. Nov. 26, 1963 [Sept. 5, 1962], No. 34060/62. Heading H2H. [Also in Division G3] Gassing in electrolytic apparatus such as a secondary battery or plating bath is prevented or maintained at a predetermined rate by means of a circuit controlling the current supplied to the apparatus in response to the detection of hydrogen gas evolved by electrolysis. As shown, output terminals 10 are provided for connection to a battery which may be charged from an A.C. source 4 by way of a barretter 11, a transformer 12 and a regulating transistor 14. A probe 1 in communication with the battery so as to be exposed to hydrogen evolved therein comprises thermistors 2 and 3 which are heated by a constant direct current derived from the source 4 by way of a transformer 5, a barretter 6, a current transformer 7, a rectifier 8 and a smoothing capacitor 9. The thermistors 2, 3 form part of a bridge circuit, including resistors 19 and 20, the output from which controls transistor 14 by way of amplifying transistors 15, 16. As long as no hydrogen is evolved the bridge circuit remains unbalanced and maximum charging current is supplied. When gassing commences, the greater cooling effect of the evolved hydrogen affects the temperature of the thermistors 2, 3 and the bridge tends to balance, so that the output signal to transistor 14 produces a regulating action to reduce the charging current. The bridge circuit may be arranged to be balanced when no hydrogen is evolved and to become unbalanced upon the evolution of hydrogen. A suitable construction for the probe 1 is described with reference to Figs. 2 and 3 (not shown). It is stated that other known circuit e.g. comprising thryatrons, silicon controlled rectifiers or magnetic amplifiers, may be used for regulating the charging current.
Patent GB-1216844-A (GB)
Title: Purification process
Inventor: BOWYER WALTER
IPC: C07C51/48
Filed: 1967-07-26
Abstract: 1,216,844. Purification of dibasic acids. IMPERIAL CHEMICAL INDUSTRIES Ltd. 17 June, 1968 [26 July, 1967], No. 34393/67. Heading C2C. Purified acids or mixtures of acids are obtained from "nylon waste acids", which consist mainly of adipic, glutaric, and succinic acids, by digesting said acids with hot benzene, toluene, chloroform, ethylene dichloride or a mixture of any of these solvents. The hot mixture is filtered to separate undissolved acid and the filtrate is cooled to cause crystallization of said adipic glutaric and succinic acids.
Patent GB-888733-A (GB)
Title: Improvements in or relating to co-axil type cable and methods of manufacture thereof
Inventor: HALL GEORGE THOMAS WILLIAM
IPC: H01B11/18
Filed: 1960-10-12
Abstract: 888,733. Cables. STANDARD TELEPHONES & CABLES Ltd. Oct. 12, 1960, No. 34935/60. Class 36. A coaxial cable comprises an inner conductor 1, loosely surrounded by a plastic tube 2 such that at least two insulating filaments, cords or tapes 3 wrapped helically round the tube, whilst still warm, draws it into contact with conductor 1; the return conductor 4 and the protective sheath 5 are then applied over the deformed tube. The filaments 3 are wrapped helically round tube 2 with opposite lays to so deform tube 2 from opposite sides as to provide a number of sealed compartments along the length of the inner conductor. Air under pressure can be passed into tube 2 during the application of filaments 3. Conductor 1 may be copper wire, tube 2 may be of nylon or of "Terylene" (Registered Trade Mark), a polypropylene, polythene, polystyrene, or P.T.F.E., filament 3 may be of nylon or " Terylene," and conductor 4 may be of aluminium or copper.
Patent GB-1010305-A (GB)
Title: Improvements in or relating to timing mechanisms
IPC: H01H43/24
Filed: 1962-09-13
Abstract: 1,010,305. Stencil switches; time switches. MAYTAG CO. Sept. 13, 1962 [Oct. 13, 1961], No. 34960/62. Heading H2B. [Also in Division G3] A programme timer comprising a plurality of switches 30, 30<SP>1</SP> operated by slots 46 in a belt 17 driven by a motor 20 through epicyclic gearing 21 is provided with means for automatically advancing the belt rapidly over predetermined parts of the cycle, for example, to ensure simultaneous operation of switches without the extreme accuracy of alignment of slots 46 which would be required at the slower speed. The switches 30 (shown on an enlarged scale in Fig. 3) comprise contacts 33, 34 bridged by members 36 while the cam followers 44 encounter slots 46. The end 86 of a spring- urged lever 83 is positioned to co-operate with slots 91 near the edge of belt 17 such that the presence of a slot 91 allows the other end of the lever to move into the path of mechanism (Fig. 2, not shown) to effect removal of a friction brake from gearing 21 and produce a higher transmission speed. A retractive plunger 100 may be held depressed manually to give the same effect if it is desired to move the belt 17 rapidly to a certain position in the cycle; this operation also opens a switch 110 to disconnect the power supply from the switches 30, 30<SP>1</SP> until the desired position has been reached. Instead of slots 46, rises may be provided on the belt 17, to lift the cam followers 44.
Patent GB-950459-A (GB)
Title: Pulse generating apparatus for a multi-channel control system
Inventor: CARSON OLIVER SAMUEL
IPC: G05B23/02
Filed: 1959-10-15
Abstract: 950,459. Semi-conductor pulse generating circuits. SHORT BROS & HARLAND Ltd Aug. 30, 1960 [Oct. 15, 1959], No. 34979/59. Heading H3T. A pulse generating circuit for a multichannel control system comprises a pulse generator in respect of each channel and a synchronizing arrangement. Each pulse generator includes an input circuit 13, 14 connected to an A.C. supply, a capacitor 15 charged by current from the input circuit, and a four layer PNPN semi-conductor diode 16 connected to control the discharge of the capacitor 15 through output load RL1 and RL17, the arrangement being such that when the capacitor reaches a predetermined charge the diode 16 conducts and the capacitor discharges through the output load. Each generator includes a primary winding P in series in its discharge circuit, and a plurality of secondary windings S1, S2 equal in number to the number of channels less one are coupled to each primary winding P and also to the discharge circuits of the generators for the other channels such that current flowing in the discharge circuit of any of the generators induces in each of the other discharge circuits a voltage which assists that developed by the capacitor 15 tending to produce conduction in this circuit. Thus, when one of the capacitors discharges all the others in the rest of the channels also discharge simultaneously. The relay in each generator may be substituted by an additional secondary winding.
Patent GB-461304-A (GB)
Title: Improvements in lenses for photography and the like
IPC: G02B13/00
Filed: 1935-12-18
Abstract: 461,304. Lenses. LEE, H. W., and KAPELLA, Ltd. Dec. 18, 1935, No. 35067. [Class 97 (i)] Relates to objectives of the kind comprising two compound meniscus dispersive components with their concave surfaces facing one another, between outer collective components having surfaces of different curvatures and having their more strongly curved surfaces turned outwards. According to the invention, a lens of this kind corrected for spherical and chromatic aberrations, coma, astigmatism, and distortion has the radius of curvature of the concave exterior surface of the rear dispersive component not greater than 0À3 times the focal length of the system and the radius of curvature of the convex exterior surface not greater than 0'4-times the focal length, and the refractive index of each convergent component of the compound menisci exceeds that of the divergent component associated with it by not more than À03. Data are given for three examples. Specification 377,537 is referred to.
Patent GB-619247-A (GB)
Title: Improvements in or relating to power transmission devices
IPC: F16D3/66
Filed: 1946-11-27
Abstract: 619,247. Securing wheels on shafts. WESTINGHOUSE ELECTRIC INTERNATIONAL CO. Nov. 27, 1946, No. 35190. Convention date, Nov. 27, 1945. [Class 80 (ii)] A flexible drive for transmitting power from a gear 14 to an axle 11 comprises a hollow hub structure 19 rotatably carried by a casing 12 and connected by spokes 15 to the gear rim 14, a spider 23 connected to the axle 11 having spokes 24 arranged in interfitting relation with the gear spokes 15, yieldable cup means between the gear and spider spokes, and means including sealing rings 46 co-operating with the hub structure to form an enclosed space for retaining lubricant for the lubrication of the thrust engaging surfaces 42, 44. The yieldable cup means each comprise opposed cups 34 housing a spring 33 and having exterior ribs 36 arranged to abut the inner ends 37 of bushings 38 carrying the cups. The bushings 38 are provided with ribs 39 fitting grooves formed in the gear spokes 15 and in cap members 30. The sealing rings 46 have flanges 49 fitted within rings 50 carried by the interior of the gear hub structure 16, and flanges 47 are pressed by springs 52 against surfaces 48 on the spider hub. Side plates 53 connected to the gear rim and hub structure complete the spoke space enclosure and a filler hole 55 and plug 56 are provided. The drive is particularly applicable to the driving axle of a locomotive.
Patent GB-920079-A (GB)
Title: Improvements in or relating to apparatus for producing a high velocity gaseous stream
Inventor: MOTTRAM ANTHONY WILLIAM THOMAS
IPC: G01M9/04
Filed: 1960-10-14
Abstract: 920,079. Arc plasma generators. BRISTOL SIDDELEY ENGINES Ltd. Sept. 29, 1961 [Oct. 14, 1960], No. 35218/60. Class 39 (3). [Also in Group XXXIII] A pair of concentric electrodes together form an annular convergent-divergent nozzle through the throat of which a working fluid axially flows, and across which a radial arc can be maintained, the arc heated working fluid being discharged from the nozzle into a chamber, which chamber is itself provided with an outlet nozzle for the discharge of the high velocity hot gas, which may be supplied to a hypersonic wind tunnel. Hollow cathode 4 and anode 3 define an arc chamber 1, into which a liquid oxygen/nitrogen mixture is introduced tangentially via spaced peripheral holes 6, to be evaporated by the arc maintained across the throat 12, the resultant gas being ejected into chamber 8 and thence from nozzle 9. The liquid is pumped, to act as coolant, via inlet pipe 13 and the hollow wall of nozzle 9 and chamber 8, through the helical passage formed by the partition 10 in the hollow wall of the anode 5 to the gallery 7, and thence to holes 6 and, via pipe 14, down the interior of the cathode 4; the pump 14 may have a bleed to the pump inlet for the control of the liquid supply. Further cooling of the cathode 4 and the throat of nozzle 9 is provided by the continuous evaporation of films of the liquid produced on their surface by the fine holes 15 and 17 respectively. Alternatively, by the use for these parts of the apparatus of porous walls, or of inserts formed of porous material or of fine metal tubes, sweat cooling may be employed; or those ports may be interchangeable with similar ports to permit either film or sweat cooling. A coil 20 may be connected in series with the electrodes; and several arc chambers may feed a single chamber 8, permitting a greater gas blow, and control of the gas temperature by the supply of cold air from one of the chambers the arc of which has been extinguished. In a modified method of use, compressed air may be fed directly to the arc chamber to constitute the source of gas. A modified cathode construction (Fig. 2, not shown) permits the use of a liquid metal, instead of the working fluid, as coolant, and enhances the Peltier cooling of the cathode. Specification 897,577 is referred to.
Patent GB-1498814-A (GB)
Title: Gas turbine power plant with fluidised bed combustion apparatus
IPC: F01K23/06
Filed: 1975-07-31
Abstract: 1498814 Turbine power-plant ROLLSROYCE Ltd 31 July 1975 [10 Aug 1974] 35338/74 Headings F1G and F1Q A power-plant includes a fluidized bed combustion chamber 14 having first and second heat exchange paths 16, 24 in which the working fluids of gas and steam turbine plants are respectively heated. As shown, air from compressor 10 is heated as it passes through path 16 of bed 14 on its way to a turbine 18 driving the compressor.  The air leaving turbine 18 flows to bed 14 to support combustion of fuel, e.g. coal or residual oil. The combustion products pass to a separate power turbine 20, driving electric generator 22 and thence exhaust via economizer 40. Feedwater is preheated in the latter prior to passing through path 24 of bed 14 in which steam is produced to drive a further turbine powering an electric generator. A by-pass valve 32 may be opened at part-load operation. In a modification Fig. 1 (not shown) combustion air is supplied to bed 14 from power turbine 20 rather than directly from turbine 18. Compressor 10 may be provided with intercoolers. An auxiliary combustion chamber may be disposed in the air inlet line to turbine 18 for starting purposes.
Patent GB-883391-A (GB)
Title: Production of 2,2-bis(4-hydroxyphenyl) propane
Filed: 1959-10-19
Abstract: A continuous process for the production of 2,2-bis-(4-hydroxyphenyl) propane by reacting acetone with phenol, the phenol being present in excess of the stoichiometric amount in the presence of a substantially insoluble cationexchanging resin as catalyst comprises contacting the phenol with acetone both containing not more than 2% by weight of water in a reaction zone in the presence of the cationexchange resin having at least two milliequivalents of acid per gram of dry resin at a temperature of from 30 DEG C. to 125 DEG C., separating the effluent from the reaction zone into two streams, one stream containing 2,2-bis (4-hydroxyphenyl) propane, 2,2-bis (4-hydroxyphenyl) propanephenol adduct, reaction byproducts and phenol and the other stream containing acetone, water and phenol, removing the reaction by-products from the first stream, recovering the 2,2-bis (4-hydroxyphenyl) propane and recycling reaction by-products, phenol and acetone to the reaction zone.  The use of solvents such as pentane, cyclohexane and benzene is mentioned. Cation exchange resins specified include sulphonated styrene divinylbenzene copolymers, sulphonated cross-linked styrene polymers, phenol-formaldehyde- and benzene-formaldehyde-sulphonic acid resins. Ion exchange resins in the form of the sodium or other salt must be at least partially converted to the hydrogen form before use in the process, e.g. by washing with sulphuric acid solution.  The resin may also be partially esterified with a mercapto alcohol before use in the process, e.g. mercapto ethanol.  The effluent from the catalyst bed may be concentrated in a film evaporator preferably one with counter current vapour liquid flow where all the water and acetone and a portion of the phenol are removed overhead.  Apparatus for carrying out the process is described with reference to a Figure (not shown). Examples are furnished.
Patent GB-1363659-A (GB)
Title: Tetralones and indanones
IPC: C07C49/623
Filed: 1971-12-01
Abstract: 1363659 Ketones AMERICAN HOME PRODUCTS CORP 1 Dec 1971 [3 Dec 1970 21 May 1971] 35389/73 Divided out of 1363658 Heading C2C Compounds of the general formula (R<SP>8</SP> = H, C 1-4  alkyl or alkoxy, acyloxy, Ph(C 1-4  alkoxy), halogen, CF 3 ; R<SP>9</SP>=alkoxycarbonyl, C 1-4  alkyl, C 3-5  alkenyl, Ph(C 1-4  alkyl); Y<SP>1</SP>= halogen, C 1-4  alkylsulphonyl, PhSO 2 , tetrahydropyranyloxy; Ph = phenyl, optionally substituted ; m = 0, 1; n =2-6) are prepared by reacting a compound of the formula with Z(CH 2 ) n Y<SP>1</SP> (Z=halogen, C 1-4  alkylsulphonyl, PhSO 2 ), optionally followed by hydrolysis when Y<SP>1</SP> = tetrahydropyranyloxy and conversion of the resulting alcohol to a product in which Y<SP>1</SP>=halogen, C 1-4  alkylsulphonyl or PhSO 2 . The preparation of 1-ethoxycarbonyl-2-indanone is described, and 1-(3-bromopropyl)-1- methyl-2-tetralone is characterized as the 2,4- dinitrophenylhydrazone.