baber/WOPTO huggingface dataset:
Patent GB-820928-A (GB)
Title: Sawtooth-waveform generators
Inventor: KNIGHT HENRY ARTHUR PHILIP
IPC: H03K12/00
Filed: 1958-05-13
Abstract: 820,928. Changing wave-shape. MULLARD Ltd. May 13, 1958, No. 15304/58. Class 38 (2). [Also in Group XL (c)] A sawtooth waveform is generated from a polyphase alternating current source by applying the source to a polyphase half-wave rectifier, the ripple voltage from which charges a capacitor at alternate peaks of the ripple, the capacitor subsequently discharging through a resistor. Fig. 1 shows a saw-tooth generator circuit in which a three-phase alternating supply is connected to a transformer, the secondary windings TS of which are shown star connected. The secondaries are connected to a half-wave rectifier circuit D5, D6, D7, the voltage appearing across resistor R8 thus comprising a D.C. and a ripple voltage component. At each negative-going peak of the ripple voltage capacitor C6 is charged through capcitor C7 and diode D4, the capacitor C6 subsequently discharging slowly through resistor R6 so that, as shown in Fig. 4, a sawtooth voltage is generated at terminal J. The negative-going peaks of the ripple voltage are restored to a fixed voltage level by a diode D3 returned to minus 150 volts, the time constant of the restoring action being determined by C7, R7 so that a clipping action occurs to cover most of the variations which are likely to occur in the phase voltage amplitude. Since the upper and lower voltage levels of the sawtooth waveform are fixed and the duration of each cycle is determined by a sharply-defined point, X, Fig. 4, in the alternating waveform the rise of the sawtooth is substantially constant. If the polarity of diode D3, D4, and rectifiers D5, D6, D7 are reversed and if the 150 and 270 voltage supplies are positive the output at terminal J will comprise a sawtooth voltage having a slow negative-going portion and a fast positive-going portion D.C. restored to a positive potential with respect to earth.
Patent GB-560724-A (GB)
Title: Improvements relating to automatic stopping mechanism for lapping or core-covering and like machines
IPC: D07B7/14
Filed: 1942-10-30
Abstract: 560,724. Covering cores by winding. MACKIE & SONS, Ltd., J., and MACKIE, J. P. Oct. 30, 1942, No. 15311. [Class 109] A stop mechanism for a core-covering machine operates upon breakage of the covering material, and in addition, operates upon tangling or undue bending of the wire or other core. The device for stopping the machine upon breakage of the covering material, which may be applied by lapping guides rotating in opposite directions, may be that described in Specification 550,297. In one form the reel 5 carrying the coil wire or other core is mounted upon a pivoted arm 6, and upon undue pull in the wire due, e.g., to tangling a projection 19 upon the arm rotates a shaft 12 by means of a tappet 11. When the pull ceases to act, upon the supply of wire running out, the arm 6 is swung in the opposite direction, and the shaft 12 is also rotated in the opposite direction to stop the machine. In a modification the reel 5 is fixed, and the wire is led from the reel over a guide arranged at the end of the arm 6. A counting device as described in Specification 552,693 may be provided for operating the stop mechanism when a required length of the core has been covered.
Patent GB-328136-A (GB)
Title: A new mechanical lever for various purposes
IPC: F16H21/44
Filed: 1929-05-17
Abstract: 328,136. Roche, D. May 17, 1929. Power-multiplying mechanism consists of a lever A pivoted to a vehicle, &c, at A<1> and connected by a link E to a lever C pivoted on a rod B sliding in a guide B<1> and carried by the lever A, the lever C being connected by a link F to the long arm of a lever D pivoted at A<1> and operating the rod G. Two or more linkages may be connected in series.
Patent GB-128676-A (GB)
Title: Apparatus for the Electrolytic Production of Zinc, Copper or other Metals.
IPC: C25C7/00
Filed: 1917-10-26
Abstract: 128,676. Soc. de MÚtallurgie Electrolytique. Oct. 28, 1916, [Convention date]. Electrodes; moving; supporting; treating surfaces.-Apparatus for the deposition of zinc, copper or other metals has vertical cathode disks D, preferably of the same metal as the deposit, clamped on a shaft A by a nut, a fast collar, and intermediate loose collars. The shaft is supported by conductive bearings E on the longer sides of a tank P. To prevent irregularity in the deposit, the edges of the cathode disks may be coated with non-conducting material, such as a mixture of wax and resin. For the same purpose, the anodes K of graphite, lead, magnetite, &c. are smaller in area. than the immersed parts of the cathodes, or, if rectangular, are coated with non-conducting material outside the desired active area. The anodes are adjustably fastened by bolts to copper rods L resting on conductors on the edges of the tank, and are also supported by wooden or other cross-pieces on the tank bottom, so that they can be placed obliquely to vary the distance between different parts of the electrodes. Rubbers for the cathodes consist of flexible strips J clamped by plates I on bars H, which may be of varnished iron. Rubber strips a or other springs press the stripe outwards from the bars. At one end, the bars slide on a rail G, and at the other end, they are connected to cranks F on a shaft geared to the cathode shaft. The num. bers of revolutions of these shafts should be prime to each other. The tank may be of tarred wood.
Patent GB-283065-A (GB)
Title: Improvements in electric high tension insulators
IPC: H01B17/02
Filed: 1927-06-11
Abstract: 283,065. Marks, E. C. R., (Akt.-Ges. Brown, Boveri, et Cie). June 11, 1927. Insulators.-In suspension insulators for high tension electric lines, the bolt for connecting the insulators of a chain together is supported in the insulator head by a tubular block of hard, non-conducting material such as porcelain which is secured in the insulator head by a thin laver of cement so that the tensile forces acting on the bolt produce only shearing stresses in the cement and no radial stresses on the insulator head. In the construction shown in Fig. 1, the supporting block 7 is made in one piece and is secured in the insulator head a by a layer of cement 9. The bolt consists of two parts 4, 5 screwed together at 6. Fig. 2 shows a modification in which the bolt 12 is made in one piece and the block 13 in two or more pieces with straight or corrugated abutting edges. The block is cylindrical or slightly conical on its outer surface and may be grooved as at 15. The seating for the head of the bolt may be flat, bevelled, or cupped.
Patent GB-529275-A (GB)
Title: Improvements relating to disconnecting boxes, distribution pillars and other apparatus used in electric power distribution networks
IPC: H02G3/18
Filed: 1939-05-26
Abstract: 529,275. Distribution boards. HENLEY'S TELEGRAPH WORKS CO., Ltd., W. T., and MOOR, E, May 26, 1939, No. 15653. [Class 38 (i)] A contact 48, Fig. 12, of a distribution board or box, furnished with a permanently attached cable socket 53 is mounted so that the socket can be moved axially to clear the end of the cable to enable this to be inserted in the socket. If the contact is carried by an insulator 52 this may have a rear projection that fits a slot 50 in the panel 47 so that the insulator is guided in the slot It is slid upwards and the cable end aligned with the socket which is then slid down and clamped by screws 69 to the cable end and subsequently soldered. If the bus-bar contact 49 is carried on the same insulator it, is attached with the bus-bar 63 to a bracket detachably secured to the insulator by screws 66. When in its final position the insulator is screwed to the panel 47. In a modification the contact 7, Fig. 9, and its cable socket are carried by cross-bars 32, 36 clamped by bolts 37 to insulated rods 31 forming a supporting frame. When the bolts are slackened the contact can be slid along the rods. Rods of rectangular cross section, slotted to receive a clamping bolt may be employed. If the plane of the contacts is transverse to the direction of the cables, the cable sockets may be attached to shanks on the contacts of such length and curvature as to bring the cable sockets into a group spaced apart by sheets or strips of insulating material fixed at right angles to the panel.
Patent GB-1294407-A (GB)
Title: Turbine driven pumps for rocket motors
Inventor: BRINGER HENRI
IPC: F04D13/04
Filed: 1970-04-02
Abstract: 1294407 Centrifugal pumps; rocket motors H BRINGER 2 April 1970 [3 April 1969] 15748/70 Headings F1C and F1J A pump assembly for a rocket motor comprises a support portion 1, Fig.1, having therein a passageway which is open at one end of the support portion for delivering a first propellant directly into the rocket motor through an apertured end-wall thereof to which the one end is attached when the assembly is in use, a pump 5 for the first propellant and a water pump 6 both having their casings fixedly mounted, with respect to the support portion, to one side of the passageway, and a pump 4 for a second propellant and a turbine 17 for driving the three pumps, the turbine and the pump 4 both having their casings fixedly mounted, with respect to the support portion, to the opposite side of the passageway. The assembly is thereby substantially balanced about the support portion 1. The support portion 1 is connected to structure of a missile driven by the rocket by a universal joint 11, the resultant pivotal movement of the assembly with respect to propellant supply ducts 12, 13 being accommodated by connecting pipes 7, 8 having spherical ends. In addition to being supplied to the rocket motor, the two liquid propellants, comprising a fuel and a combustion-supporting agent, are supplied to a gas generator to provide motive gas for the turbine 17. The water supplied by the pump 6 is used for cooling the gas before entry to the turbine and also for pressurization of propellant tanks. A piston valve 44 acted upon by the opposing pressures of the two propellants communicated through ducts 47, 48, controls the delivery of the first propellant to the rocket motor, whereby the two propellants are supplied in a constant proportion. An arrangement for regulating the pressure in the combustion chamber of the rocket motor comprises means for controlling the supply of the propellants and cooling water from the pumps to the gas generator so as to control the speed of the turbine. The means comprises a piston 30, Fig.3, subjected at 31 to a reference pressure and at 32 to the combustion chamber pressure and operating a valve controlling the flow of cooling water from an inlet 33 to a duct 34 leading to the gas generator and also to ducts 35a, 35b of identical devices 29a, 29b (one only shown) so as to act at 37a, 37b on pistons 36a, 36b. The pistons are also acted on at 38a, 38b by propellants admitted via ducts 42a, 42b from chambers 40a, 40b located downstream of piston-operated valves controlling the supply of propellants from inlets 39a, 39b to ducts 41a, 41b leading to the gas generator.
Patent GB-1042425-A (GB)
Title: Tufting machines
IPC: D05C15/00
Filed: 1964-04-16
Abstract: 1,042,425. Tufting machines. CALLAWAY MILLS CO. April 16, 1964 [April 30, 1963], No. 15755/64. Heading D1G. In a tufting machine in which yarn is urged through hollow needles by means of air flow, the rate of flow is varied during a tuft-inserting cycle by varying the air pressure. As shown, the passage of compressed air to a chamber 26, in which the hollow needles 24 are mounted, is controlled by a valve 92 actuated by a rotary cam 96 driven from the main shaft 30 of the machine. Yarn 40 is fed to the needles by pattern means comprising endless chains 48, 50 carrying intermeshing pattern members 44, 46, chain 50 being driven from a variable-speed shaft 66 actuated by elliptical gears 60, 62 from a shaft 64 driven at constant speed from shaft 30. In a modification the needlemounting chamber 26 communicates with an axial bore in the lower end of the needle bar 36, said bore having radial ports communicating intermittently with inner ports provided in an air pressure chamber surrounding the lower end of the needle bar. In a further modification, the supply of compressed air is controlled by a solenoid valve, the energization and de-energization of which is controlled by means of a rotary cam.
Patent GB-168991-A (GB)
Title: Improvements in liquid fuel feed devices for internal combustion engines
IPC: F02M37/02
Filed: 1920-06-11
Abstract: 168,991. Hobson, H. June 11, 1920. No Patent granted (Sealing fee not paid). Vacuum apparatus.- -Vacuum fuel-feed apparatus for internal-combustion engines comprises a vacuum chamber a connected by a pipe a<1> to the induction pipe and by a pipe a<2> to the main fuel tank. The chamber a is connected to the delivery chamber b by a. pipe c extending from the upper part of the chamber a to the upper part of the chamber b, and the lower part of the chamber a is connected to the chamber b by a pipe d. When the fuel level in the chamber b falls below the end of the pipe c, air entering through a pipe b<1> passes up the pipe c and breaks the vacuum, so that the chamber a discharges through the pipe d. The lower end of the pipe c is at a higher level than that of the pipe d and may be bent as shown in dotted lines.
Patent GB-932565-A (GB)
Title: Packaging machine
Inventor: EUWE GERRIT EVERT
IPC: B31B5/78
Filed: 1960-05-04
Abstract: 932,565. Erecting and filling cartons. UNILEVER Ltd. May 4, 1960, No. 15828/60. Class 94(1). A machine for erecting cartons and filling them has means for feeding each erected carton to a filling section such that the carton enters the filling section whilst moving parallel to an edge of its upper open end, and pivoting means at the filling. section for moving the carton about an axis parallel to said edge so that flaps defining the mouth of the carton can engage over articles awaiting to be packaged or a shoot through which the articles can be passed. The machine has a hopper section 1, Fig. 1, containing a stack of flat-folded cartons 3, and a reciprocable pusher plate 27 for moving the lowermost carton of the stack to the carton erecting section 4. Wedge shaped members 30, 31 enter the carton, as it moves into the erecting section 4, to partially open the carton. Thereafter, a pin 40 enters the partially opened carton and then moves upwardly to fully erect the carton. The bottom side flaps 5, 6 are closed by oscillating arms 45, 46 and the broad bottom flaps 7 and 8 are closed by oscillating arms 52, 54. A reciprocating pusher plate 28 moves the erected carton to the filling section 13. The filling section 13 comprises a cage 63, Figs. 1 and 5, formed by a bent tube 64 pivoted about a shaft 68. As the erected box is pushed into this cage by a reciprocating pusher plate 28 the cage 63 rocks anticlockwise and the open end of the carton is thereby pushed over the discharge end of a shoot 74 surrounding a stack of articles 15 to be packaged. During this movement of the cage 63, a guide 75 maintains the broad top flap 11 in a slightly raised position and spreaders 76 act on the upper side flaps 9, 10 to hold them apart. The articles 15 are pushed through the shoot 74 by a pushing device (not shown). The cage is then pivoted back into the position shown and a plate 29 pushes the filled carton out of the cage and on to an ejector table 77, Fig. 6. The table 77, consisting of a platform 78 with a perpendicularly attached side 79 formed by a roller conveyer, is then caused to turn to the position shown in broken lines in which position the roller conveyer 79 slopes downwardly. The filled carton thus automatically moves down the roller conveyer 79 and is ejected from the machine, for example on to an endless conveyer. The reciprocating pusher plates 27, 28, 29 are all mounted on a common shaft 16 and at the end of each working stroke this shaft rotates to move the plates 27, 28, 29 to a position below the cartons before making its return stroke.
Patent GB-107517-A (GB)
Title: Improved Anchorage for Tramway Rails.
Inventor: GORDON JOHN
IPC: E01B21/04
Filed: 1916-11-06
Abstract: 107,517. Gordon, J. Nov. 6, 1916. Anchoring tram rails. - Tramway rails are anchored to a cement, concrete, or other hard foundation by means of bolts 2 which are bent, bulbed, and indented as shown and cemented into holes 5 shaped to afford a key. The hole may be enlarged at the central portion as shown in broken lines. The heads of the bolts pass through slots or holes arranged alternately on opposite sides of the rail flange and are secured by nuts 3.
Patent GB-828446-A (GB)
Title: Improvements in or relating to apparatus for delivering sterile water
IPC: A61L2/18
Filed: 1956-05-22
Abstract: In a sterile water installation there are provided a pipeline system and a closure therein which permit delivery through the outlet first of a sterilizing water, e.g. a chlorinated or p  superchlorinated water, and then passage of this sterilizing water to a neutralizing tank, e.g. to a tank where dechlorination is effected, for conversion of the sterilizing water to a nonirritant sterilized water, before delivery of the water so sterilized to the outlet.
Patent GB-679301-A (GB)
Title: A combined corkscrew and crown cork or bottle cap remover
Inventor: WILKINS FRANK
IPC: B67B7/44
Filed: 1950-06-26
Abstract: 679,301. Corkscrews ; crown - cork openers. MYERS & SON, Ltd., M. June 15, 1951 [June 26, 1950], No. 15868/50. Class 125 (ii). A corkscrew b is provided with a removable sheath e which can be inserted through an eye c to form a handle, a crowncork opener d being pivoted to the eye c so that it can be folded into contact with one side of the sheath when the latter covers the corkscrew. The rotation of the opener d in the extended position is limited by a stop on the corkscrew.
Patent GB-423338-A (GB)
Title: Improvements in and relating to methods of purifying gases
IPC: B01D53/34
Filed: 1934-05-28
Abstract: Gases, e.g. hydrogen, nitrogen, and helium, are purified from carbonaceous gases, such as methane, carbon mon- or dioxide, by passage over finely divided aluminium heated at 700 to 950 DEG  C.; the aluminium may be mixed with inert material such as aluminium silicate or oxide.  The powdered aluminium is contained in a wrought iron tube 13, heat being applied by an electrically heated alundum &c. tube 4 <PICT:0423338/III/1> contained in an iron casing 3 packed with heat-insulating asbestos, silica &c.  To prevent oxidation of the heating wire 6, a protective gas, such as nitrogen, may be passed through the casing by tubes 11, 12.  Tubes 14, 15 serve for passage of the gas to be treated which may be that described in Specification 371,108.  Specification 288,216, [Class 90], also is referred to.
Patent GB-629092-A (GB)
Title: Improvements in radio or television aerials
IPC: H01Q1/10
Filed: 1947-05-27
Abstract: 629,092. Aerial masts. BERWICK, H. W. May 27, 1947, No. 15921/46. [Class 20(i)] [Also in Group XL(c)] A hollow mast for supporting an insulated aerial wire 7 within the mast comprises a number of tapered tubular sections 1 of conductive or non-conductive material  rigidly connected together by insulating sleeves 2, each sleeve fitting inside the upper end of a section to form a socket into which the lower end of the adjacent upper section fits. The top section is closed by a stopper 6 and the bottom section is connected to a mounting tube 5 by an insulating sleeve 4. The bottom end of the aerial and the lead-in 11 are both clamped to a metallic collar 8 by means of insulating collars 9 and 10.
Patent GB-851679-A (GB)
Title: Improvements in or relating to steroids and the manufacture thereof
IPC: C07J5/00
Filed: 1959-05-08
Abstract: The invention comprises compounds of the formula : <FORM:0851679/IV(b)/1> wherein R is a lower alkyl radical containing 1-4 carbon atoms inclusive and wherein R1 is hydrogen, hydroxyl or OAc wherein Ac is the acyl radical of a hydrocarbon carboxylic acid containing 1-12 carbon atoms, and the preparation thereof by (a) reacting a compound of the formula : <FORM:0851679/IV(b)/2> with a secondary cyclic amine to produce the corresponding 3-enamine, (b) reacting the said 3-enamine with an alkyl halide to produce the corresponding 4-alkyl-3-enamine, and (c) hydrolysing the latter compound to produce the desired 4-alkyl-4-pregnene-3,20-dione. Suitable amines are pyrrolidine, morpholine, piperidine, homomorpholine, 2,4-dimethylpyrrolidine, 3-isopropylpyrrolidine and 3,3-dimethylpyrrolidine.  Illustrative products of the invention are 4-methyl-4-pregnene-3,20-dione, 4-methyl-17a -hydroxy-4-pregnene-3,20-dione, 4-methyl-21-hydroxy-4-pregnene-3,20-dione, 4-methyl-17a ,21-dihydroxy-4-pregnene-3,20-dione, 4-methyl-17 a -hydroxy-4-pregnene-3,20-dione 17-acetate, 4-methyl-21-hydroxy-4-pregnene-3,20-dione 21-acetate and 4-methyl-17a ,21-dihydroxy-4-pregnene-3,20-dione 17,21-diacetate. Specification 724,094 is referred to.ALSO:Steroids having the formula: <FORM:0851679/VI/1> wherein R is a lower alkyl radical containing 1-4 carbon atoms inclusive and wherein R1 is hydrogen, hydroxyl or OAc wherein Ac is the acyl radical of a hydrocarbon carboxylic acid containing 1-12 carbon atoms inclusive, are put up and administered in solid compositions as tablets, powders, capsules or pills, in liquid compositions as solutions, emulsions, suspensions, syrups, and elixirs.  They can also be administered topically as ointments, creams and lotions with or without coacting antibiotics and germicides.  Specification 724,094 is referred to.
Patent GB-457541-A (GB)
Title: Improvements relating to the heating or cooling of pulverulent materials
IPC: C04B7/36
Filed: 1935-05-31
Abstract: 457,541. Cooling pulverulent materials. AHLMANN, N., 7, Taarnborgvej, Copenhagen. May 31, 1935, No. 15936. [Class 29] [See also Group XII] Pulverulent material such as cement, ore and burnt limestone is heated or cooled during rapid movement in a thin layer along a helical path on the inside surface of a cone, cylinder or other body of revolution subjected on the outer surface to the action of the heating or cooling medium. The material is fed by a worm 11 to the bottom of a cone 1 and is lifted and moved around the inside of the cone by stirrers 9 on a shaft 3 and discharged through a tangential outlet 2 at the top. The outer surface of the cone is cooled by water from a spray pipe 12. A horizontal cylinder may be used, the material being fed in at the lower part of one end and discharged at the top of the other end. Specification 23060/07, [Class 72], is referred to.
Patent GB-120384-A (GB)
Title: Improvements in and relating to Aromatic Arsenical Compounds.
IPC: C07F9/74
Filed: 1918-10-03
Abstract: 120,384. Rockefeller Institute for Medical Research, (Assignees of Jacobs, W. A., Brown, W. H., Heidelberger, M., and Pearce, L.). Oct. 3, 1917, [Convention date]. Aromatic arsenoxides containing an a -aminoacylamide group-NHCHRCONR'R" (R=hydrogen, alkyl, or aryl R<1>, R<11>=hydrogen, alkyl or aralkyl), or =NHCHRCONHAr (Ar=aryl or substituted aryl) are prepared (1) by treating the corresponding arsonic acids described in Specifications 120,381 and 120,383 with mild reducing- agents, e.g. sulphur dioxide in the presence of hydriodic acid, (2) by treating aminophenylarsenoxidea with a -halogenacylamides. Examples are given of the preparation of phenyl-p-arsenoxidea -phenylglycinamide by reducing the corresponding arsonic acid, phenyl-p-arsenoxideglycinanilide by condensing p-aminophenylarsenoxide with alpha-chloracetylaniline, phenyl-parsenoxideglycyl-m<1>-aminophenol and phenyl-p - arsenoxideglycylanthranilic acid bv reduction of the corresponding arsonic acids. The following products also are specified :-p-arsenoxides of phenylglycyl-p<1>-aminophenol, -m<1>-aminobenzonesulphonamide, -p<1>- aminobenzenesulphonamide, -sulphanilic acid, and of o-tolyglycyl-4<1> - aminophenol.