baber/WOPTO huggingface dataset:
Patent GB-885447-A (GB)
Title: Improvements relating to spinning machines for artificial threads
IPC: B65H54/72
Filed: 1958-09-22
Abstract: The spinning machine of the parent Specification (wherein a thread winding or collecting device, including its driving and traversing elements, is assembled to form a compact self-contained unit which is detachably mounted on the machine) is modified by the provision of an electrically driven wind-up bobbin, the angular velocity of which is responsive to the tension of the thread travelling on the bobbin.  As shown in Fig. 1 which is a side view of a portion of the spinning machine, bundles of filaments 1, each from a spinning head, after travelling over driven guide rolls 2, 3, are fed to four winding stations each contained in a housing 17 and <PICT:0885447/IV (a)/1> <PICT:0885447/IV (a)/2> <PICT:0885447/IV (a)/3> provided with a wind-up bobbin 4 (Figs. 1 and 2) which is driven by an electric motor constructed as a roller with a motor having an external rotor built therein.  The bobbin 4 rotates about a non-rotatable shaft 5, one end of which is provided with a ball-bearing guide member 6 which is moveable along a fixed rod 7 and is prevented from pivoting by an arm attached to the guide member 6, the other end of the arm being provided with a small wheel moveable along the channel section guide 8.  During operation, the bobbin with its growing package is urged against a roll 9 rotatably mounted on a fixed spindle by means of a spring or a weight-loaded cable acting on the guide member 6.  A double thread guide 10, serving the two winding stations 14 and 15 on the bobbin 4, is reciprocated parallel with the axis of the bobbin by means of a peg 13 engaging in a groove of the cam drum 12, which is the external rotor of a second electric motor.  Before reaching the thread guide the threads are led over a sensing feeler 16 (Fig. 1) which is responsive to thread tension and automatically controls the angular velocity of the bobbin in such a manner that the rate of wind up of the thread on the bobbin is constant and the tension on the thread, therefore, is also substantially constant.  This automatic control may be that described in Specification 820,640.  The surfaces of the thread are not damaged, as is possible in the case of thread packages driven by a friction roller, and in addition the point of initial contact of the thread on the package is always in the same straight line parallel with the bobbin axis.
Patent GB-940451-A (GB)
Title: Sawtooth waveform generators
Inventor: STOCKFORD MICHAEL TERENCE
IPC: H03K4/12
Filed: 1958-09-23
Abstract: 940,451. Valve sawtooth circuits. MULLARD Ltd. Nov. 11, 1959 [Sept. 23, 1958], No. 30352/58. Heading H3P. A sawtooth voltage generator comprises a secondary emission valve V1 having a delay line DL in its anode circuit, a capacitance and a constantcurrent device being connected between the dynode and a point of reference potential. As shown, a sine wave at 1 Mc/s. is fed to the grid of the secondary emission valve V1, normally biased off by potentiometer R2. The positive half-cycle of the sine wave drives V1 into conduction, the fall in voltage at the anode being fed back to the cathode via capacitor C1 to increase the rate of change of voltage at the anode. After a period equal to twice the transit time of delay line DL, the positive step at the anode is fed to the cathode cutting off V1. The dynode is fed via terminal B to the helix of a travelling wave tube. The self-capacitance Cs of this tube charges rapidly at the onset of conduction of V1 and then discharges via valve V3, the discharge being linearized by feedback across resistor R7. The upper limit of the sawtooth wave form at terminal B is limited to earth by diode D2; the lower limit being restricted to the cathode potential of valve V2 by diode D3. Reference has been directed by the Comptroller to Specification 723,331.
Patent GB-341042-A (GB)
Title: Improvements in or relating to the construction of lighting units
IPC: F21S8/06
Filed: 1929-10-07
Abstract: 341,042. Illuminant enclosures. HAWKINS & CO., Ltd., L. G., 30, Drury Lane, London.-(Miller Co.; 99, Center Street, Meriden, Connecticut, U.S.A.) Oct. 7, 1929, No. 30422. [Classes 75 (ii) and 75 (iv).] In an illuminant enclosure comprising a plurality of transparent, translucent, or reflecting portions which are relatively separable to permit access to the interior, adjacent portions are united to one another by a plurality of flexible resilient strip-like members the ends of which are pivoted so as to be substantially tangential to the peripheries of said adjacent portions and separation of these adjacent portions is obtained by relative twisting. In the form shown in Fig. 1, an interiorly etched crystal glass cover-plate 14 and a lower opal glass bowl 17 have their peripheries 15, 18 mounted in channel-shaped split rings 16, 19 carrying a number of lugs 47. Flexible metal strips 48 are pivoted at both ends to corresponding pairs of lugs 47, as by means of hollow rivets 49, Fig. 3. The straps 48 are also pivoted intermediate their ends to a band 50 by means of pins 51 passing through helical springs 52 and screwing into knobs 54 on U-shaped clamps 53. The band 50 houses the rings 16, 19 when the enclosure is closed, and separation of the parts 14, 17 may be effected after pulling out the clamps 53 against the action of the springs 52. The ring 19 also carries a dishshaped aluminium reflector 20, having a downwardly drawn portion 21 and a relatively large aperture 22, whilst the bowl 17 carries a reflecting metal cap 24 which is slightly larger than the aperture 22 and is fitted with an etched crystal glass knob 26. This indirect lighting unit may be converted into a semi-indirect lighting unit by omitting the reflector 20, and a diffused lighting unit may be obtained by making the cover-plate 14 of opal glass. In a direct lighting unit, illustrated in the Specification, the parts 14, 17 are interchanged, and the reflector 20 is inverted and surmounted by an auxiliary aluminium reflector in the form of a flat disc.
Patent GB-624880-A (GB)
Title: Dust cap for oil tubes
IPC: F16N21/06
Filed: 1946-10-11
Abstract: 624,880. Oil-hole covers. HODDY, G. W., HODDY, J. S., and EYNON, B. E. Oct. 11, 1946, No. 30433. Convention date, Jan. 25. [Class 12 (iii)] A dust cap 7 for an oil tube comprises a flexible, dome - shaped member of oil - impervious elastic material, e.g. synthetic rubber, said member forming an oil reservoir and being provided with means by which it can be filled. The cap has at its base an open neck 9 and on its top a self-closing slit 10 with reinforcing bosses at its ends through which slit the spout of an oil can may be pushed, to fill the reservoir 11 formed by the cap. The cap 7 is preferably moulded on the oil tube 8, which may be provided with a flange 15 or a flared end; alternatively, the tube may have straight walls, the cap being cemented thereto. In another application, the cap is inserted directly into an oil hole, and there cemented, or it is inserted into the end of an oil tube; in these cases a split' bushing of spring brass may be inserted in the opening 9 of the cap to ensure a tight fit in the oil hole or tube.
Patent GB-1338886-A (GB)
Title: Anthraquinone dyestuffs
IPC: C09B1/42
Filed: 1972-06-29
Abstract: 1338886 Coloured paint compositions; coloured polymers BAYER AG 29 June 1972 [30 June 1971] 30521/72 Headings C3F C3P C3Q C3R and C3B [Also in Divisions C4 and B5] Anthraquinone dyestuffs of the general formula wherein R is a substituent atom or group, Z is alkyl, p is 0-6, m is 3-4, and n is 1-2 are used (a) in Example 1(b) to colour stoving lacquers containing coconut, cottonseed, castor oil or synthetic fatty acid alkyd resins, melamine resin or formaldehyde-urea or formaldehyde benzoguanamine condensates, physically drying spraying lacquers, Zapon lacquers, nitro lacquers, synthetic resin lacquers, stoving - and air drying epoxide lacquers, unsaturated polyester or amine-curing epoxide resin lacquers, aromatic or aliphatic isocyanate-hydroxyl group containing polyether or polyester lacquers; (b) in Example 1(c) to colour an aqueous dispersion paint containing approx. 50% polyvinyl acetate, clear polyvinyl acetate paints and also dispersion paints containing styrene-maleic acid copolymers, polyvinyl propionate, polymethacrylate, butadiene-styrene and glue; (c) in Example 1(d) to colour polyvinyl chloride, polyethylene, polypropylene, polystyrene, polyamides, terephthalic acid-ethylene glycol condensate, acrylonitrile - butadiene - styrene copolymer, and plastics made from cellulose acetate, cellulose butyrate or polycarbonate; (d) in Example 1(e) to colour polyurethane foams; (e) in Example 1(h) to colour light crepe and in Example 1(i) to colour viscose.
Patent GB-235832-A (GB)
IPC: A61C3/025
Filed: 1924-12-19
Abstract: 235,832. Maurer, J. June 17, 1024, [Convention date]. Dental operating. appliances; air, gas. and vapour injectors and douches. -A sand-blast device is arranged for grinding and otherwise treating teeth. Compressed air or liquid under pressure is led from a container 21 to a hand-piece 1 and carries with it a finely divided grinding powder from a container 17. The hand-piece has a controlling valve 7 operated by pins 10, and a detachable nozzle 3 having a tip 4 of carborundum. The grinding material, which may be powdered glass, quartz, or porcelain is fed into the stream by a worm 15 driven by an electric motor 18, the circuit 19 of which may be controlled by the stem 9 of the valve 7. The connecting pipe 12 may be electrically heated. The valve 22 of the container 21, the resistance 29 of the motor 18, and the resistance 30 of the heating circuit 13, are all controlled by a footpedal 26 and side cheeks 27, 28. Carbonic acid may be used in order to freeze the part being treated, and anµsthetics may be introduced into the stream. A hollow mask connected to an exhauster is arranged around the mouth in order to draw off the used grinding medium.
Patent GB-815262-A (GB)
Title: Process for the production of ª‡-cyanethylated ketones
IPC: C07C255/45
Filed: 1956-10-08
Abstract: Alpha-monocyanethylated ketones are made by heating at least an equimolecular quantity of a ketone containing at least two hydrogen atoms on alpha-carbon atoms with acrylonitrile in the presence of a primary amine and/or a salt thereof or a Schiff's base and/or a salt thereof in such an amount that the pH of the reaction mixture ranges from 5-12, an acid being added if necessary.  Ketones specified are acetone, diethyl ketone, methyl ethyl, methyl propyl, methyl isopropyl, methyl isobutyl, and methyl heptyl ketones, acetyl and acetonylacetone, cyclopentanone, cyclohexanone, 2- or 4-methyl-cyclohexanone, cyclohexandione-(1 : 2) and -(1 : 4), 1- or 2-oxo-decahydro- and -tetrahydro-naphthalenes, acetophenone, and propiophenone.  Amines mentioned are methyl-, ethyl-, n- and iso-propyl-, n-, iso-, sec- and tert.-butyl-, n- and iso-amyl, and n-dodecyl-amines, ethylene-, tetramethylene- and hexamethylenediamines, cyclohexyl-, cyclopentyl- and hexahydrobenzylamines, 2- or 4-methylcyclohexylamine, benzylamine, aniline, o-, m- and p-toluidines, glycocoll, e -aminocaproic acid and aminoethanol. Acids which may be added are formic, acetic, butyric, chlor-acetic, benzoic, oxalic, succinic, adipic and phthalic acids, also hydrochloric, sulphuric, phosphoric and carbonic acids.  The process may be effected by heating acrylonitrile with an equimolecular quantity or an excess of ketone in the presence of the catalyst and a small amount of a polymerization inhibitor such as hydroquinone to 50-250 DEG  C.  Increased pressure may be used.  In examples, cyclohexanone is reacted with acrylonitrile to give 2-(b -cyanethyl)-cyclohexanone in the presence of (1) cyclohexylamine and acetic acid, (3) hexamethylene diamine and acetic acid, (4) e -aminocaproic acid, and (9) cyclohexylamine and hydrochloric acid; in further examples, acrylonitrile is reacted in the presence of cyclohexylamine and acetic acid with (5) cyclopentanone giving 2-(b -cyanethyl)-cyclopentanone, (6) 2-oxo-decahydronaphthalene giving a mixture of 1- and 3-(b -cyanethyl)-2-oxo-decahydronaphthalene, (7) methyl propyl ketone giving 3-(b -cyanethyl)-pentanone-2, and (8) acetophenone to give 3-benzoyl butyric acid nitrile; (10) acetone is reacted in the presence of cyclohexylamine and benzoic acid to give b -cyanethyl-acetone together with some dicyanethylated acetone.
Patent GB-648587-A (GB)
Title: Improvements in or relating to telephonic pulse-code-modulation systems
IPC: H03M1/00
Filed: 1948-11-26
Abstract: 648,587. Pulse code modulation circuits. PHILIPS ELECTRICAL, Ltd., and BAILEY, C. E. G. Nov. 26, 1948, No. 30708. [Class 40 (v)] In a coding device for a pulse code modulation communication system the code elements in each group are determined by a control voltage which initially corresponds to the amplitude of a signal sample and subsequently decays during the group period. In the embodiment described, a three-element binary code of " on " or " off " elements is used. The modulating signal is applied to the grid of valve V1, Fig. 2, from terminal M, and appears across the cathode resistance R6. Short sampling pulses applied to terminals CP, render diodes D1, D2 conducting to charge C4 positively to signal potential from the cathode of VI. On cessation of the sampling pulse, diodes D1, D2 become blocked and the condenser C4 discharges exponentially through resistance R4, which is chosen so that the potential on C4 is halved during each code element period. The decaying potential at output terminals MV is fed to the input terminals MV, Fig. 1, where it controls the passage of three successive code element pulses from input terminals EP to output terminals SE. Between these terminals are two transformers T1, T2, connected by four alternative paths each containing a pair of diodes d1, d5 ... d4, d8. The steady positive voltages at the ends of these paths are 80 and 70, 60 and 50, 40 and 30, 20 and 10, respectively, and the junction of each pair of diodes is normally at zero voltage so that the right-hand diode is blocked and all the paths are non-conducting. The decaying control voltage from terminals MV is applied to these junctions through resistances R2, and if, when the successive code element pulses reach terminals EP, the control voltage lies between any of the path extreme voltages, that path will be conducting and pass a pulse to the output terminals SE. If, however, the control voltage lies between 70 and 60, 50 and 40, 30 and 20, or 10 and zero, no pulse will be passed, all the paths remaining blocked. Resistances R2 and condenser C2 across terminals MV prevent a path being established through pairs of non-adjacent diodes and the diode capacities may be neutralized by a condenser Cn. The initial control voltages are arranged to be in the range zero to 80 volts, so that the three-element code allows light signal levels, differing by ten volts, to be transmitted. Volume compression may be introduced by varying the distribution of voltage across the condensers C1, C2 and/or changing the rate of decay of the voltage across condenser C4.
Patent GB-618301-A (GB)
Title: Improvements in or relating to grinding machines
IPC: B24B47/10
Filed: 1946-10-15
Abstract: 618,301. Grinding and polishing. RHODES. C. T. Oct. 15, 1946, No. 30723. [Class 60] In a grinding machine the drive to the work-rotating means includes a friction wheel between two complete friction discs on a common shaft which is perpendicular to the axis of said wheel, said discs and wheel being relatively movable so that continuous frictional engagement between said wheel and either disc may be effected at will at an adjustable radial distance from the disc shaft whereby a continuous drive with an infinitely variable gear ratio and which can be reversed in direction at will is incorporated. A work-head, adjustable on its base 7 about a vertical axis, is provided with a lathe type chuck 23 at one end and a brace type chuck 24 at the other which are driven by belts 22 from a shaft 19 journalled in a housing 14 on the work-head. One of two spaced steel friction discs 16 carried on the shaft 19 is engaged by a wheel 10, with a solid rubber tyre 11, driven from a flexible shaft 9 which thus rotates the shaft 19. The shaft of the wheel 10 passes through a carrier 12 slidable vertically in a member 13 by means of a knob 17 so that the desired variable gear ratio is obtained. The carrier 12 is carried eccentrically in the member 13 which may be rotated into positions so that the wheel 10 engages one or other of the discs 16, thus allowing a reversal of direction of the drive, or into a position in which the wheel 10 engages neither disc, when no drive is transmitted.
Patent GB-425492-A (GB)
Title: Improvements in and relating to electrical fuse gear
IPC: H01H85/36
Filed: 1933-11-06
Abstract: 425,492. Protective cut-out arrangements ; thermal switches. LONDON, P., The Glen, Thorkhill Road, Thames Ditton, Surrey. Nov. 6, 1933, No. 30790. [Class 38 (v)] In an arrangement for connecting an auxiliary fuse d in a circuit a a predetermined time after the blowing of a main fuse b, the auxiliary fuse is connected in series with a resistance and a normally open switch c in a shunt circuit to the main fuse, the resistance controlling the switch in such a manner as to cause it to close and short-circuit the resistance after the main fuse has blown. In the construction shown in Fig. 2, the resistance comprises a tube e of carborundum or similar material with terminal caps f, f<1>, and the movable member of the switch comprises a spring-controlled plunger g connected to the terminal f by a flexible conductor. The plunger is normally held in the position shown, against the action of the spring, by a fusible detent u of solder or similar material, which fills a hole in the tube e and engages a metal collar l mounted in a groove on the plunger g. When the main fuse b blows, the current passes through the auxiliary fuse d and resistance e, until the latter heats up and melts the solder u, whereupon the plunger is forced to the other end of the tube, in which a contact pin h on the plunger engages a socket member secured to the terminal f thereby shortcircuiting the resistance. In a modification, Fig. 5, the resistance comprises a rod e<1> surrounded by the plunger g<1>, the whole being enclosed in a glass tube s and preferably immersed in an insulating liquid. The plunger is normally held in the inoperative position by a fusible detent ring u<1> mounted in a groove on the resistance rod e<1>. The value of the resistance is preferably very high compared with the impedance of the load a<1> in the circuit a, so that in the interval between the blowing of the main fuse b and the shortcircuiting of the resistance, the current is reduced to a low value which will not interfere with the clearing of a fault. A number of units with resistances of different values, each connected through a separate auxiliary fuse, may be provided.
Patent GB-958399-A (GB)
Title: Improvements in and relating to resin compositions
IPC: C08L73/00
Filed: 1961-08-28
Abstract: A composition comprising from 99 to 70% of a vinyl chloride polymer or copolymer and from 1 to 30% of a solid ethylene-carbon monoxide copolymer containing from 1 to 15% carbon monoxide and having a melt index of from 0.01 to 100.  The copolymer preferably contains up to 20% of a comonomer e.g. vinyl acetate, propionate or butyrate, ethyl or propyl acrylate, methyl or butyl methacrylate, vinyl bromide, vinyl fluoride, vinylidiene bromide, chloride or fluorochloride, ethylene, propylene, isobutylene, allyl acetate, allyl chloride and allyl ethyl ether. Heat stabilizers e.g. dibutyl tindilaurate or maleate basic lead carbonate, dibasic lead phosphite or stearate, lead oxide, alkaline earth silicates, hydroquinones, lead phenolate, and aromatic compounds containing phenolic and amino groups may be present as may also stearic acid, polyethylene, titanium dioxide and precipitated calcium carbonate.
Patent GB-894517-A (GB)
Title: Improvements in or relating to mechanical counting devices
IPC: G06M1/30
Filed: 1959-09-11
Abstract: 894,517. Zeroizing-mechanism. TELEPHONE MANUFACTURING CO. Ltd. (Elmeg Elektomechanik G.m.b.H.). Sept. 11, 1959, No. 31056/59. Class 106 (1). In a counter in which the transfer pinions are disengaged from the numeral wheels for zeroizing, the numeral wheels are positively locked in zero position until after the transfer pinions have been re-engaged. To zeroize a counter including a numeral wheel 1, a zeroizing button is depressed, moving a lever 11 to the right, this movement being transmitted by a pin 14 to a lever 5 which moves towards the heart-shaped cam 2 on the numeral wheel. The friction produced by a spring 9 between the lever 5 and a pinion bridge 8 causes the pinions to be brought out of engagement, until the bridge 8 meets a stop 10, the pinions being locked by means not shown. On further movement of the lever 11, the lever 5 contacts the heart cam 2 and the wheel 1 is zeroized, pressure on the lever 11 continuing until the lever 5 has penetrated to the bottom of a depression 6 in the cam 2. When the zeroizing button is released, a spring 12 urges it to its original position, and with it the lever 5 and, through the friction of the spring 9, the pinion bridge 8. The depth of the depression 6 is such that only when the teeth of the transmission pinions 4 are already re-engaged, does the lever 5 unlock the numeral wheel by leaving the depression 6.
Patent GB-1223297-A (GB)
Title: Improvements in ticket printers
IPC: G07B1/02
Filed: 1968-06-28
Abstract: 1,223,297. Ticket-issuing machines. LICENTIA PATENT - VERWALTUNGS - G.m.b.H. 28 June, 1968 [28 June, 1967], No. 31081/68. Heading G4T. A ticket printing machine comprising a plurality of printing plates 13 stored in compartments 11, a printing carriage 4 movable lengthwise of the compartments for selecting a printing plate, and a member 2 movable from front to rear to position the printing carriage above a predetermined compartment, is characterized by a plurality of punched cards 14 stored in compartments 12 and a device 16 secured to the printing carriage for lifting a punched card corresponding to a selected printing plate. The punched cards control fare, class, train and serial number printing wheels extending through apertures in the printing plate at the printing position, a totalizer, printing of a book-keeping strip and punching of a tape. The printing carriage has four keys 5 which operate corresponding stops 19 electromagnetically or mechanically to limit the amount the punched card may be lifted, the keys 5 corresponding to the class of ticket to be issued. The punched card is sensed photoelectrically, electro-mechanically, or capacitively.
Patent GB-719458-A (GB)
Title: Improvements in and relating to arched supports for mine galleries
IPC: E21D11/24
Filed: 1950-12-21
Abstract: 719,458. Mine roof supports. MOLL, F. W., [trading as MOLL SOEHNE MASCHINENFABRIK, F. W.]. Dec. 21, 1950 [Dec. 23, 1949], No. 31128/50. Class 20 (2) An arch for supporting mine roofs comprises arcuate girder segments 1 having at the ends, for embracing crusher blocks 3, curved shoes each formed of two angle members connected by rivets 8 and having curved edges 5 so that the shoe is wider at the centre and correspondingly curved ribs 6. The web of the I section girder segment 1 is clamped between the angle members of each shoe which is cut away to receive the girder flanges.