baber/WOPTO huggingface dataset:
Patent GB-793557-A (GB)
Title: Improvements in and relating to control systems for electric winder drives
Inventor: PROWSE DONALD WINDSOR
IPC: B66B1/06
Filed: 1955-07-01
Abstract: 793,557. Control of A.C. motors; controllers. BRITISH THOMSON-HOUSTON CO., Ltd. June 26, 1956 [July 1, 1955], No. 19158/55. Class 38 (3). In a control system for an A.C. winder motor, comprising a coil 11 for determining the type of motor operation (power or braking, forward or reverse), alternative positions provided for a manual control lever enable the selection of such conditions prior to the release of the mechanical brakes. Thus, if the operator anticipates that dynamic braking operation will be necessary after the brakes are released, such operation will be established immediately when movement of the winder is started, under the influence of gravity, for example. The manual control lever may be movable in an H-slot, one longitudinal part of the slot having sections extending in opposite directions for forward or reverse power operation respectively, and a parallel part having similar sections for forward or reverse dynamic braking operation. Change-over contacts COS are adapted to be actuated when the control lever is moved through the transverse part of the slot. When power operation of the winder is selected, contacts COS are open so that movement of the master controller in a,forward or reverse direction energizes the control coil 11 through contacts PF1<SP>1</SP> or PR1<SP>1</SP>, the contacts PF2<SP>1</SP>, PR2<SP>1</SP> remaining closed. If the master controller is moved in the forward direction with the driver's lever in the dynamic braking portion of the slot, relay PF2 is energized to open contacts PF2<SP>1</SP> and close contacts PF2<SP>11</SP>. The contacts B<SP>1</SP>, B<SP>11 </SP>are as shown when the brakes are applied, so that no voltage is supplied to the coil 11 through contacts PF1<SP>1</SP>. However, the coil 11 is now energized through contacts PF2" with a voltage which is opposite in polarity to that obtainable through contacts PF1<SP>1</SP> if these were closed. Similarly, if the master controller is moved to produce reverse dynamic braking conditions, the voltage applied to the control coil 11 is opposite in polarity to that which would be provided through contacts PR1<SP>1</SP>. Specification 791,158 is referred to.
Patent GB-987794-A (GB)
Title: Polycarbonates and methods for their manufacture
IPC: C08G63/19
Filed: 1961-05-26
Abstract: In the manufacture of polycarbonates by heating together a dihydric phenol and a bis-haloformate of a dihydric phenol with evolution of hydrogen halide, the reaction is effected in the presence of a solvent which is benzophenone, m-terphenyl, a chlorinated or brominated biphenyl, a chlorinated or brominated diphenyl oxide or a chlorinated or brominated naphthalene. Heating is effected at a temperature from 270 DEG  C. to the reflux temperature, possibly in the presence of a tertiary amine as catalyst.  The reaction mixture may also include a di-acid halide of an aromatic dicarboxylic acid or a chain-stopper which is a monohydric phenol or an acid halide of a monocarboxylic acid.  The dihydric phenols are preferably dihydroxy benzenes, dihydroxy diphenyls, dihydroxy naphthalenes or their halogenated derivatives.  They may also be bisphenols in which the radical joining the two hydroxyaryl groups may be one or more radicals selected from alkylene, alkylidene, tertiary amino, ether, carbonyl, sulphide, sulphoxide, sulphore and siloxy radicals and in which the hydroxyaryl groups may be substituted by halo, nitro-, hydrocarbyl or hydrocarbonoxy radicals.  The aromatic dicarboxylic acid may be phthalic, isophthalic, terephthalic or a naphthalene dicarboxylic acid or halogen substituted derivatives thereof.  At the end of the polymer-forming reaction, the polymer may be precipitated from the solvent by the addition of a non-solvent or, alternatively, the solvent may be removed by spray-drying or evaporation. In examples, polymers are made by reacting: (1) hydroquinone and resorcinol bischloroformate; (2) hydroquinone, hydroquinone bischloroformate and resorcinol bischloroformate; (3) chlorohydroquinone and hydroquinone bischloroformate; (4) hydroquinone and chlorohydroquinone bischloroformate; (5) bisphenol A and bisphenol A bischloroformate; (6) hydroquinone and bisphenol A bischloroformate; (7) hydroquinone, hydroquinone bischloroformate and isophthaloyl chloride by a one- or two-stage process; (8) hydroquinone, hydroquinone bischloroformate and 5 - chloroisophthaloyl chloride; (9) hydroquinone, resorcinol bischloroformate and isophthaloyl chloride; or hydroquinone, resorcinol, hydroquinone bischloroformate and isophthaloyl chloride by a one- or two-stage process; or hydroquinone, hydroquinone bischloroformate, resorcinol bischloroformate and isophthaloyl chloride; or hydroquinone, resorcinol, resorcinol bischloroformate, isophthaloyl chloride and terephthaloyl chloride by a one- or two-stage process.  Reference is also made to reacting catechol with the bischloroformate of hydroquinone or resorcinol.  Uses.-Films, fibres, electrical insulation or dielectrics, adhesives. Specification 984,524 is referred to.
Patent GB-1387699-A (GB)
Title: Mining transportation means
IPC: B61H7/04
Filed: 1972-04-25
Abstract: 1387699 Railway vehicle undercarriages MASCHINENFABRIK SCHARF GmbH 25 April 1972 [4 June 1971] 19194/72 Heading B7L [Also in Division F2] An undercarriage 4, at each end of a mine vehicle base frame 3, has a pair of support rollers for rolling on each flange of two rails 1 and a guide roller 6 extending transversely beneath each flange with limited vertical play between the rollers and the flange; a lifting piston-and-cylinder device 7, between each pair of support rollers, has a vertically guided piston-rod carrying a fluid released resiliently actuated brake shoe 8 above the respective flange, all the lifting devices being connected by an hydraulic control line to at least speed threshold, e.g. centrifugal tripping device 14, brake actuation causing the support rollers to lift clear from the rails. A single tripping device 14 may be used, or a device may be located on each vehicle. The vehicles may be used on an overhead conveyer, the shoes 8 still taking the weight of the vehicles during braking. The shoes 8 are of hard, granular material.
Patent GB-147454-A (GB)
Title: Fuel-feed apparatus for internal combustion engines
IPC: F02M37/02
Filed: 1920-07-07
Abstract: 147,454. Seck, W. Oct. 8, 1918, [Convention date]. Vacuum apparatus.-A vacuum fuel-feed apparatus for internal-combustion engines comprises a chamber a connected by a pipe s to a low-level fuel tank, by a pipe x to the.induction pipe of the engine, and by a passage g and tube f to the atmosphere. When the engine is running, the suction creates a vacuum on the upper side of a piston c, so that the piston rises and its rod lifts a ball valve e and closes the atmospheric connexion. Vacuum is gradually created in the chamber a through a small hole in the piston c, and fuel enters through a port u. The fuel lifts a float m guided by a rod n and a perforated cylinder h,. and the float closes a valve v and cuts off the suction from the chamber a. The vacuum on the two sides of the piston c is then equalized and the piston falls, thus opening the air valve e and establishing atmospheric pressure in the chamber a. The fuel then flows out through a valve into the chamber k open to the atmosphere and connected by a pipe z to the carburettor. A valve i: prevents flooding when the vehicle is on an incline.
Patent GB-494410-A (GB)
Title: Improvements relating to half-heel tips for boots and shoes
IPC: A43C13/02
Filed: 1938-06-30
Abstract: 494,410. Boot &c. protectors. LEWIS, W. H. June 30,1938, No. 19407. [Class 17 (iii)] A half heel tip for a boot or shoe has a kerf or groove 1 extending across the tread surface and also the outer edge 2 to serve as a guide for a hack-saw in severing the tip into two unequal parts, the larger of which has three holes 6 for attaching nails and may be used as a quarter tip.
Patent GB-1511781-A (GB)
Title: Apparatus for loosening and removing textile fibres from fibre bales
IPC: D01G7/04
Filed: 1976-05-11
Abstract: 1511781 Bale breakers FRATELLI MARZOLI & C SpA 11 May 1976 [21 May 1975] 19438/76 Heading DIN An apparatus for removing fibres from bales comprises a carriage 11 supported to be vertically and horizontally translatable in a frame, the carriage having an apron conveyor to act on the top of the bale and being provided with transverse bars 27 disposed below the apron to contact the top of the bale. Spiked cylinders 30, 31 are provided to direct fiber towards the apron. Contrarotating loosening cylinders 35, 36 cooperate with cylinders 30, 31 to send back fibre on to the top run of the apron and hence be recycled. Removed fibre is carried by the apron to a spiked cylinder 42 which transfers it to a removal conveyer 43, Fig. 3.
Patent GB-369109-A (GB)
Title: Improvements in or relating to vacuum frames for printing upon sensitised surfaces used in connection with photomechanical composing machines for multiple reproduction on zinc plates, lithographic stones or the like
IPC: G03B27/20
Filed: 1931-07-06
Abstract: 369,109. Photographic printing apparatus. MARINONI (MACHINES ET MATERIEL POUR L'IMPRIMERIE ET LES INDUSTRIES ANNEXES), 96, Rue d'Assas, Paris. July 6, 1931, No. 19441. Convention date, Aug. 21. 1930. [Class 98 (ii).] Apparatus for printing on zinc plates, lithographic stones, and the like, especially for step-and-repeat printing comprises a frame having a glass plate mounted therein and held in place by a rubber housing having a flexible lip adapted to bear on the surface of the plate or stone, the space thus formed being evacuated. The negative to be reproduced is mounted on the surface of the glass plate, and a band or bar is inserted in a recess in the housing to press the lip outwards according to the thickness of the document. In the form shown for reproducing a thick document 16, a broad bar 15 is inserted in the recess in the housing 5. The glass plate 3 bearing the negative 16 is secured in the frame 1 by means of the housing 5 which is clamped to the frame by a block 6. The lip 9 bears on the surface of the printing plate 4, the space within the housing 5 being evacuated through the pipe 13.
Patent GB-1016939-A (GB)
Title: Improved head resonance compensator for magnetic transducing circuits
IPC: H04N5/93
Filed: 1964-05-11
Abstract: 1,016,939. Local circuits for magnetic heads. AMPEX CORPORATION. May 11, 1964 [Aug. 30, 1963], No. 19442/64. Heading G5R. [Also in Division H3] A circuit for compensating for resonance of a magnetic playback head 10 with the input circuit of an amplifier 12, comprises a PNP transistor 24 including in its collector circuit a resonant circuit 32 which is adjustable by means of capacitor 58 and resistor 56 to have the same resonant frequency and Q value as the head circuit. Transistor 24 is connected in a common emitter configuration and is biased so that the internal base to emitter impedance is low compared to the impedance of the resonance network within the range of signal frequencies. The output is indirectly proportional to the frequency of the playback signal, for constant signal amplitude, and this is compensated by a further PNP transistor 62 including a capacitor 68 in its collector circuit. Transistor 62 is biased so that the voltage across capacitor 68 nearly equals the input voltage. The reactance of capacitor 68 is large compared with the base-emitter impedance of transistor 62 but much less than that of resistance 76, and consequently the output signal increases in proportion to frequency to compensate for the decrease in the first stage. The coupling between the two stages may be through an impedance matching amplifier 16, e.g. a common collector transistor, and the order of the two stages may be reversed. The circuit may be used for playing back television signals from a magnetic tape.
Patent GB-596553-A (GB)
Title: Improvements in machines for conditioning tobacco leaf
IPC: A24B3/04
Filed: 1945-07-30
Abstract: 596,553. Conditioning tobacco. BOWEN, G. H. July 30, 1945, No. 19484. [Class 130] Tobacco leaves moving through a closed chamber a on a permeable wire-mesh conveyer are subjected to heated and moistened air circulated by a fan d so that it flows upwardly and downwardly at the entrance and exit ends of the chamber, as indicated by the arrows. A battery of steam-heated pipes and a steam spray for the air are located adjacent the fan and controlled by dry and wet bulb thermometers n, m respectively. Adjustable air locks b, c, k are provided at the entry and exit of the conveyer and directly under the fan. The air is guided by baffles h. Additional suction conduits l extend from the fan to the entrance and exit ends of the chamber to prevent air leakage. In a modification, the air is delivered by the fan to both ends of the chamber above and below the conveyer respectively. A tapering slot equalizes the supply.
Patent GB-1283835-A (GB)
Title: Process for preparing quaternary salts, novel quaternary salts and photographic emulsions containing them
Inventor: LINCOLN LEWIS LAUREN
IPC: G03C1/34
Filed: 1970-04-23
Abstract: 1283835 Heterocyclic quaternary salts EASTMAN KODAK CO 23 April 1970 [28 April 1969 (2)] 19547/70 Heading C2C [Also in Division G2] Novel heterocyclic quaternary salts of the formula in which Z represents the atoms required to complete a mono- or poly-nuclear heterocyclic ring system containing a 5- or 6-membered ring including the quaternary nitrogen atom, the atoms being selected from C, N, O, S and Se, n is 0 or 1, m is 0 or 1-4, X is an acid anion, R<SP>1</SP> is hydrogen or an alkyl, aralkyl, aryl or alkylthio group, and R<SP>2</SP> is a 1-hydrazono-C 1-5 -alkyl group, are prepared by reacting a salt of the formula with a compound of the formula where R<SP>6</SP> is formyl, acetyl, propionyl, butyryl or pentanoyl, and condensing the intermediate carbonyl compound with a hydrazine having two hydrogen atoms attached to the same nitrogen atom. Specified hydrazine reactants include heterocyclic hydrazines, phenylhydrazines, in which the phenyl group may be substituted by alkyl, sulpho, nitro, carboxy or chloro, thiosemicarbazide and carbamoylhydrazines. Products include benzothiazolium, benzoxazolium, naphtho-[2,1 -d]-thiazolium, quinolinium, benzoselenazolium, benzimidazolium and indolium iodide, chloride, bromide, tosylate, acetate, benzene sulphonate, hydrosulphate, thiocyanate, perchlorate, propionate and cyanate. The quaternary salts are used as fogging agents in photographic emulsions.
Patent GB-826222-A (GB)
Title: Improvements in ventilators
Inventor: O'HEA IGNATIUS JOHN
IPC: F24F7/02
Filed: 1955-07-06
Abstract: 826,222. Ventilators. COLT VENTILATION Ltd. June 27, 1956 [July 6, 1955], No. 19576/55. Class 137 A ridge roof ventilator of the kind comprising two side walls 1 joined to two end plates 7 to form a throat which is covered by a pair of adjustable flaps 9 hinged to a ridge rod, and a pair of inwardly facing side baffles 15 fixed between the end plates 7, is characterized in that an anti-splash guard 23 is bolted to the upper flange 5 of each side wall 1 to prevent water &c. rising off the roof during rain storms &c. from entering the throat of the ventilator. In a modification, Fig. 2, cover flaps 14 are hinged to a ridge member 13, side baffles 28 and anti-splash guards 32 being secured between end plates 26 secured by brackets 24 to end walls 12 which are joined to side walls 2 to form the throat of the ventilator. The outer ends of the flaps 14 are hooked at 20 to form strain ducts, the inner edges of the flaps being turned over to provide a stop when co-operating with the vertical stem of the ridge member 13. Each flap 14 has two downwardly depending end portions which fit over the end walls 2 when the flap is closed. In a further modification the covering flaps are downwardly curved to extend, when closed, over the side walls, an upwardly converse anti-splash guard being used. Flap operating mechanism comprises a link chain 62 in a tube 60 each link having teeth 64 engaged by a worm wheel 66 on a shaft 68 which is journalled in bearings on a bracket 70 and carries a pulley 72 grooved to receive an operating cord 74. The end of the chain 62 carries a pin 75 which is guided in a slot 76 in the tube 60 and carries a bar 77 coupled by links 78 to brackets 80 on the underside of the flaps 9.
Patent GB-147621-A (GB)
Title: Improvements in the production of photographic silhouettes and combination photographs
IPC: G03B15/08
Filed: 1920-07-08
Abstract: 147,621. Goetz, H. July 8, 1920. Addition to 169,233. Silhouettes.-Alternative methods are described for making silhouettes by using a coloured background, and only one filter for taking one of the negatives, or even dispensing with filters. In one alternative two negatives are taken of the object in front of a yellow background, one on an orthochromatic plate through a yellow filter and the other on an ordinary plate insensitive to yellow. In one negative, the background is black and in the other it is transparent. Other colours for the background can be used and the use of filters avoided by using plates so sensitized as to obtain negatives, in one of which the background is clear and in the other is black. In the Specification as open to inspection under Sect. 91 (3) (a) a method of inserting the photographed object into another picture is described. A diapositive of one negative is combined with the other negative to produce a silhouette, which may be interposed between a third negative to be printed and the printing paper, so that in the print there is an unexposed portion corresponding to the silhouette. The negative of the original silhouette object having the background black can then be printed into this space giving the combination print. This subject-matter does not appear in the Specification as accepted.
Patent GB-293985-A (GB)
Title: Improvements in or relating to the frames of motor cycles
IPC: B62K25/04
Filed: 1927-07-23
Abstract: 293,985. Broughton, J. F. Delves-, and Twitchett, P. J. L., July 23, 1927. Laminated springs.- In a motor-cycle spring frame wherein a triangular main frame 3 is pivoted at 1 to the head 2, a leaf spring 8, Figs. 1 and 2, is secured to the head 2, and is provided with two lugs 9 depending from a damping-plate 10 and engaging a cross tube 11, which connects the two tubes constituting the upper frame member 4 and passes beneath the spring 8. One or more of the leaves of the spring 8 may be bent up at the rear end to form a front attachment for the saddle 5.
Patent GB-1111648-A (GB)
Title: Apparatus for the conversion of binary numbers into coded decimal numbers
Inventor: JANSEN WALTER
IPC: H03M7/12
Filed: 1966-05-04
Abstract: 1,111,648. Binary/decimal digital electric converters. STARKSTROM-ANLAGENBAU KARL-MARX-STADT VEB. 4 May, 1966, No. 19643/66. Heading G4A. Digital apparatus for converting a binary number to a binary coded decimal number uses the method of successively doubling the binary number in a set of registers representing one power of ten by shifting, adding 6 whenever the doubled number is greater than 9 and creating an overflow which is stored in a set of registers representing the next higher power of 10. The registers representing each power of 10 comprise five first stores Sp 1/1-Sp 1/u, four second stores Sp II/2-Sp II/u fed by Sp1/2- Sp 1/u respectively, three NOR gates connected to the second stores such as to add 6 to the first number occurring whch is greater than 9, three adders KA2, KA4, KA8 adding the input bits to produce an output and a carry, the carries from KA2, KA4 being supplied to the next more significant adder and the output of KA8 being inverted and supplied to a NAND gate PG-N, the output of which is applied to the registers of the next higher stage. The most significant bit of the number is supplied first to Sp I/1. This is shifted to Sp I/2 when the next bit is entered. This bit is then shifted to Sp II/2 and through the adder KA2 to be shifted to Sp I/4 when the next bit is entered. The process continues until the NOR gates NG1-N, NG2-N, NG3-N detect a number greater than 9 whereon a carry is produced to the next stage when 6 is added to the number and the appropriate remainder is left in the stage being considered, at outputs 8, 4, 2, 1, the bits remaining being shifted on when the next bit is entered.
Patent GB-612506-A (GB)
Title: Improvements in or relating to reinforced plastic materials
Filed: 1943-11-24
Abstract: 612,506. Tanks. KREMER, H. Nov. 24, 1943, Nos. 19662/43 and 641/44. [Class 69 (i)] [Also in Groups V, VIII, XIV and XVII) In making reinforced plastic materialby moulding sheets of plastic material 11 and 14 about a reinforcement 24, an opening is provided in one of the sheets to afford access to the reinforcement, and the moulding is carried out so as to produce an irregular surface following the shape of the reinforcement. The reinforcement may have a screw thread 25, Fig. 1, to which access is obtained through the hole in the plastic sheet or sheets, or may have a projecting handle 26, Fig. 2. The invention may be applied to the attachment of filler seatings, pipe flanges, and drain blocks to petrol tanks. The plastic sheets may be of polyvinyl or acrylic resin, polythene, thermosetting resin, laminations of paper or fabric impregnated with phenol- or urea-formaldehyde resins, polyvinyl resins, or cellulose derivatives, or may be two plastic layers enclosing a sheet of plywood. The reinforcement may be of wood or metal such as aluminium alloys, and may be coated with synthetic resin cement to promote adhesion. One sheet may be a patch of small area covering the reinforcement and securing it to the other sheet. The layers may be united by steam pressure applied through a flexible rubber sheet.