baber/WOPTO huggingface dataset:
Patent GB-162305-A (GB)
Title: Spiral grooved nail
IPC: F16B15/06
Filed: 1919-09-03
Abstract: 162,305. Butterfield, E. A., (Butterfield. P. F.). Sept. 3, 1919. Screw-nails.-A drive-screw or screw-nail has one or more spiral grooves running the whole length of the shank 1, these grooves being of V-form and having a sharp rib or lip at one or both edges of each groove, such rib extending from the shank and being a continuation of the face of the groove.
Patent GB-821845-A (GB)
Title: Improvements in or relating to systems for high-frequency heating of work pieces
IPC: H03K17/288
Filed: 1956-02-29
Abstract: 821,845. Control systems for high frequency consumption apparatus. PHILIPS ELECTRICAL INDUSTRIES Ltd. Feb. 29, 1956 [March 3, 1955], No. 6336/56. Class 38 (4). In a high-frequency heat treatment apparatus cooling means such as a jet of water is brought into operation and not at the end of the heat treatment period in dependence upon whether or not the starting means is maintained operated. Operation of a starting switch S energizes a relay coil A over a change-over contact c1, thereby closing its contact a1, a2 and also switching in the highfrequency heating current for the work coil 5. Closure of the contact a2 causes a triode 27 to become conductive, thereby cutting off a normally conductive triode 28, the two triodes and the associated apparatus forming a single stroke trigger circuit. Conduction of the triode 27 energizes a relay coil B, thus closing its contacts b2, b3 and opening contacts b1, b4. When contact b1 opens a condenser 40 is placed in the grid circuit of the diode 28, which condenser gradually charges whilst the triode 27 is conductive until at some stage it causes the triode 28 to conduct once again and thus triode 27 cuts off to de-energize relay B when the highfrequency heating current is switched off due to the relay A being de-energized by the opening of contact b2. The condenser 40 thus forms the means for timing the heating period. If the operation of the starting switch S were of a transient nature no further operation would ensure at the end of the heating period since a relay coil D, which causes the cooling means to become operative, would not be energized because an auxiliary relay coil C is de-energized when the relay coil B is de-energized, thus opening a contact c2. However if, when the starting switch S is operated to begin the heating period, it is maintained operated, the relay coil C is maintained energized over the switch S and the contact c1. Thus when the relay coil B is de-energized at the end of the heating period and the contact b4 consequently closes the relay coil D becomes energized and switches on the flow of a cooling fluid. A switch 46 is supplied to allow a timed operation to be had or to enable the device to be manually operated. Alternatively the timing of the heating period and the delay before the cooling means is operated may be carried out by mechanical means such as the devices 14, 23, shown in Fig. 1. Specifications 705,788, 716,891 and 731,950 are referred to.
Patent GB-586961-A (GB)
Title: Concentration of non-sulphide iron ores
IPC: B03D1/02
Filed: 1944-04-05
Abstract: Non-sulphide iron ores are conditioned at high density with a collector and an acid substance, the anion of which is a constituent of an acid having a dissociation constant greater than 10-7, in a quantity sufficient to modify the ore particles so as to enhance complex formation with the collector, which comprises at least one oxygen-containing strong inorganic acid group and sufficient non-aromatic groups to give the complex of ore and collector an affinity for oils, and the conditioned pulp is then diluted to flotation density before froth flotation.  The diluted pulp may have a pH value from 1.5 to 5.5, preferably 2 to 3.  The acid substance preferably is sulphuric acid, but it may be an acid salt such as sodium bisulphate or sodium chlorosulphonate.  The collector may be water-soluble petroleum sulphonate, a sulphonated talloil, a sulphonated fatty acid, or a sulphonated saponifiable oil.  It may also be a wetting agent such as alkylnaphthalene-sulphonic acid, di-alkylsulphosuccinates, or higher alkyl sulphuric half esters. Each collector may be associated with a non-collecting oily agent such as fuel or other hydrocarbon oil, or cocoanut, linseed, cottonseed, or other glyceride oil.  The ore may be deslimed, or only partially deslimed before conditioning.  Specifications 2,359/09, 19,856/14, [both in Class 82 (ii)], and 582,450 are referred to.  The Specification as open to inspection under Sect. 91 states also that the collector may comprise an oil-soluble petroleum sulphonate or a mixture of any of the above collectors, e.g., oil-soluble and water-soluble petroleum sulphonates, and that the froth flotation separation may be replaced by other wet separations.  This subject-matter does not appear in the Specification as accepted.
Patent GB-214054-A (GB)
Title: Improved driving mechanism for spinning and like spindles
IPC: D01H1/243
Filed: 1923-03-06
Abstract: 214,054. Fraser, G., Fraser, N., and Fraser, J. March 6, 1923. Universal joints.-A universallv flexible coupling L is fitted between a spinning- spindle A and its driving- wharl E. The cords of the coupling L are secured in slots in caps K, J, and the wharl E is mounted on a lever G pivoted in the frame H, the lever G being spring or weight controlled to maintaining the wharl E and disc M in contact, but being adapted to turn against such action when it is desired to stop the spindle.
Patent GB-658888-A (GB)
Title: Improvements in and relating to the machining of the periphery of shoe heels and like-shaped pieces
IPC: B27M3/20
Filed: 1949-03-09
Abstract: 658,888. Shaping wood. SVIT, NARODNI PODNIK. March 9, 1949, No. 6449. Convention date, March 16, 1948. [Class 145(i)] A device for the automatic machining of the periphery of shaped pieces of wood &c., i.e. shoe heels is constructed so that the work-piece, viz. shoe heel has a rotary movement only and the movement into the cut is effected by the tool in addition to its usual rotary movement. As shown a turn table 7 mounted on a fixed base 14 is provided with a clamp 2, 3 for the shoe heel the clamp part 3 being carried by a rotary shaft 5 carrying shaping cams 9, 10. The fixed base 14 carries a fixed part 15 upon which is mounted a slide 16 which carries a console 17 on which is mounted the cutting tool 31 by means of a shaft 29. Also mounted on the slide 16 is a slide 19 adjustable thereon by means of adjusting means 20, 21. The slide 19 has a console 18 on which is rotatably mounted, at 22, the copying device 23 the motions of which, caused by fingers 26, 27 in contact with the cams 9, 10, are transmitted to the tool 31 by arm 24, connecting rod 35, and arm 34. The shoe heel may, while still clamped, be moved to another working station by the turn table 7.
Patent GB-730710-A (GB)
Title: Improvements in electric surge arresters
Inventor: DANNENBERG KURT
IPC: H01T1/16
Filed: 1951-11-23
Abstract: 730,710. Lightning arresters. E.M.P. ELECTRIC, Ltd. Nov. 23, 1951, No. 6477/54. Divided out of 730,634. Class 38 (4). In a lightning arrester comprising a spark gap in series with a non-linear resistor, the latter comprises an insulating housing containing a plurality of resistance unit assemblies, each consisting of two or more discs of non-linear resistance material. The assemblies may be separated by buffer rings to retain the assemblies in correct position in the housing. The spark gap may be exterior of the housing, or may be within the latter. In the arrester shown in Fig. 2, a housing 42, containing several resistance unit assemblies 21 separated by buffer rings, also surrounds at its upper end a porcelain tube 41 which houses a gap unit G comprising electrode plates separated by shunt resistor rings 24. A buffer ring 38 centres the tube 41 within the housing 42.
Patent GB-142085-A (GB)
Title: Improvements in or relating to steam ejectors
IPC: F04F5/46
Filed: 1920-03-03
Abstract: 142,085. Soc. des Condenseure Delas. April 23, 1919, [Convention date]. Aspirating - apparatus, ejector.-An ejector is provided with a diffuser formed of a thin sheet of good conducting metal surrounded by a narrow annulus of water, and means are also provided for allowing the expansion of the diffuser. Fig. 1 shows one method of carrying out the invention as applied to ejectors in series. A diffuser C of thin copper has a converging portion merging into a cylindrical portion, and is fixed at its upper part to the body M of the ejector by a nut D. The lower end of the diffuser is fixed to a ring Q. A flexible washer E held against the ring Q and the body M of the ejector by nuts P, N absorbs the variations in the length of the diffuser. A screen H forms the annulus round the diffuser. The plate E may be mounted at the upper part of the diffuser of which it may form part, or a stuffing-box may be used to allow for the expansion. Some of the cooling water may be allowed to escape through a series of holes into the diffuser to give intermediate condensation, or water from the main condenser may be used for this purpose.
Patent GB-518605-A (GB)
Title: Improvements in or relating to the conversion of carbon monoxide with hydrogen
IPC: C07C1/06
Filed: 1938-07-15
Abstract: 518,605. Hydrocarbons. JOHNSON, G. W. (I.G.Farbenindustrie Akt.-Ges.). July 15, 1938, No. 6595/39. Divided out of 21086/38. [Class 2 (iii)] Liquid hydrocarbons are prepared by the catalytic conversion of carbon monoxide with hydrogen, the reaction being effected in the presence of cyclic hydrocarbons volatile under the reaction conditions. The cyclic hydrocarbons may be added intermittently or at various points into the reaction place and the separate quantities added may vary in amount. Suitable cyclic hydrocarbons, which include naphthenes, are benzene, toluene, xylene, cyclohexane, mineral coal tar middle oil, middle oil from the destructive hydrogenation of mineral coal, naphthalene and the lower boiling mineral coal tar fractions. Suitable catalysts are substances containing nickel preferably in association with other catalytically active substances such as iron, cobalt, thorium, titanium, copper, zirconium, molybdenum, chromium, tungsten, germanium, manganese, alkali or alkaline earth metals and applied to carriers such as silicic acid, alumina, magnesia or zinc oxide ; nickelfree catalysts, such as iron obtained by reducing ferrosoferric oxide or non-fused iron compounds or cobalt may also be used. In an example, carbon monoxide and hydrogen are passed, together with sulphur-free benzene over a nickel catalyst.
Patent GB-168340-A (GB)
Title: Improvements in cotton combing machines
IPC: D01G19/26
Filed: 1920-03-05
Abstract: 168,340. Cordwell, W., and Barker, D. March 5, 1920. Combing-machines.-The detaching-roller of a Nasmith or other cotton comber has imparted to it the appropriate backward and forward movements by means comprising a pair of equal wheels e, f, Fig. 1, compounded with section-gears g, h. These engage alternately with a wheel i geared to the detaching-roller shaft a<1>. To lock the detaching-roller in its stationary position, a starwheel m is mounted on the wheel i and provided with concaves n adapted to engage cam surfaces s on plates o, p on the section-wheels g, h. The plate o may be dispensed with and a second starwheel w, Fig. 3, mounted on the wheel i with the periphery of which star-wheel a shaped projection on a lever 2 is adapted to engage when the lever 2 is raised by a snug 4 on a cam 3 on the stud b carrying the wheel f.
Patent GB-820982-A (GB)
Title: Intermediate drive arrangement for chain conveyors
IPC: B65G23/00
Filed: 1957-02-28
Abstract: 820,982. Driving apparatus for endless-chain conveyers. KNAUST, H., and KRITTER, U. VON. Feb. 28, 1957, No. 6737/57. Class 78 (1). A chain conveyer, e.g. an articulated steel plate conveyer band, is driven at intermediate positions between its ends by one or more driving sprocket wheels d engaging the conveyer chain a, the chain a being maintained in close contact with each wheel d on both upper and lower runs by an endless chain e which is passed around fixed wheels i, k, and tensioning wheels h acted on by springs f. Sufficient clearance is left between the wheels k and the driving wheel d to prevent jamming should the chain a not fit correctly on the wheel d owing to wear. The links l of the chain e have rounded shoulders m and curved ends n so designed as to present a continuous unbroken surface for contact with the chain a. A switch g is positioned adjacent one of the springs f of each chain e and is arranged to switch off the drive to the conveyer should a chain e break.
Patent GB-175298-A (GB)
Title: Box slide making machines
IPC: B31B3/28
Filed: 1921-03-01
Abstract: 175,298. Ritchie & Co., W. C., (Assignees of Evers, A. J., and Sauvage, H. J.). Sept. 25, 1920, [Convention date]. Pile supports for sheet-feeds; sheet-separators; registering-devices.-Scored pasteboard blanks 49, Fig. 13, constituting the foundation strip for box slides or shells, rest on ledges 51 in a magazine, the lowermost blanks being fed successively beneath retaining plates 47, Fig. 1, by shouldered rack-operated pushers or feeders 59 deriving their motion from an electrically-driven shaft 73. The end of the fed blank arrives in grooves 91 situated above the rear section of a stationary form 33 about which it is next partly folded. The lowermost corner strip or label 112 of a stock supported in a magazine 111 by a roller 114 and a needle point 113 is now removed from the bottom of the magazine by movement of the roller 114 which has a slightly upstanding indiarubber section 115, Fig. 6, and fed between grooved rollers 143, 126,. frcm which position label-feeding fingers 157 normally resting in the grooves of the lower roller, advance it towards a registration plate 158 having an adjustable front gauge 159. A suction shoe now picks up the label from the registration plate and applies it to the foundation strip around which it is partially folded, the completion of the box slide and the label folding operation being concluded after transference of the strips to the front portion 34 of the stationary former.
Patent GB-179364-A (GB)
Title: Improvements in means for manufacturing balls for bearings
IPC: C23F1/02
Filed: 1921-03-02
Abstract: 179,364. Rudge-Whitworth, Ltd., and Heathcote, H. L. March 2, 1921. Milling balls; rotary files.-Machines for finishing balls for bearings by rolling them between pairs of grooved discs such as a, in the grooves of which are formed filing edges by cutting fine transverse grooves or channels f have these fine grooves or channels formed by etching.
Patent GB-346924-A (GB)
Title: Metal treating furnaces
IPC: C21D1/74
Filed: 1930-03-03
Abstract: 346,924. Cementation. FAIRWEATHER, W., 65, Chancery Lane, London.-(Singer Manufacturing Co. ; Elizabeth, New Jersey, U.S.A.) March 3, 1930, No. 6890. [Class 72.] A furnace for heat-treating metal articles which are buried in an envelope of finely-divided material, e.g. carburizing compound, comprises an openended horizontal retort A arranged within a heating-chamber 1 and traversed by an endless conveyer 20 which, during its travel over a loading platform 14, receives successively a base layer d of powdered material, the articles f, and a covering layer e, the latter being of sufficient height to seal the mouth of the retort. The hopper 74 which supplies the covering layer e is fitted with a regulating plate 75, Fig. 3, which is connected by a bar 77 to a gauge-plate 76, a screw 78 being provided in the bar 77 for adjusting purposes. The lower end of the gauge-plate 76 is level with that of the slide 75 and serves as an indicator of the thickness of the covering layer. The chamber 1 is fired by gas burners 10 and is fitted with supports 11 for the retort and a bracket 19 to which the retort is anchored at 19<1>, free expansion and contraction being permitted by the supports 11 and rollers 15 on which the platform 14 is carried. The conveyer band 20 is of wire fabric made from a nickel-chromium alloy, and passes around endrollers 21, 27, an idle roller 22, main and auxiliary driving rollers 23, 26, and a tensioning roller 25, the latter being mounted between pivoted arms 28 which are adjusted in position by a crank fitted over the squared end 39 of a tube 38 to which is secured a nut 30 movable on a screwed rod 32 pivoted to a fixed rod 34. The main driving roller 23 is provided with pins to engage in the interstices of the wire fabric band and is driven through speed-reducing and adjusting mechanisms 46, 51 from a motor 54. The auxiliary driving roller 26 is actuated through bevel gearing 26b, 26d mounted at the ends of a rod 26c from the shaft 41 of the main roller 23. Adjacent the discharge end of the retort A there is provided a shoot 82 leading to a travelling screen 83 which is pivoted at 91 so that it may be swung to deliver the articles into either of the quenching tanks 84, 85, one of the latter. containing oil and the other water. The driving roller 94 of the screen 83 is fitted at each end with a bevel gear 93 and similar gears 95 are provided on the shaft 96 which is driven from a shaft 98 connected by a belt 99 to the shaft 52 of the speed adjuster 51. Latches are provided to retain the screen in either of its working positions. To dislodge any powdered material which may adhere to it, the conveyer 20 is agitated, after leaving the roller 21, by beaters mounted on a shaft 102 driven from the shaft 98. The material thus removed, together with that passing through the screen 83 is directed by a hopper 108 into a pit 109 from which it is conveyed to a receptacle 111 by an elevator 110.
Patent GB-565305-A (GB)
Title: Improvements in or relating to photographic objectives
IPC: G02B9/34
Filed: 1943-05-01
Abstract: 565,305. Photographic objectives. KODAK, Ltd. May 1, 1943, No. 6906. Convention date, June 6, 1942. [Class 97 (i)] In an objective comprising two outer positive components and two inner meniscus components highly concave to a diaphragm between them, the front component I has refractive index between 1.65 and 1.75, and dispersive index between 50 and 60, the cemented surface R7 is concave to the diaphragm, and the refractive index of element V is greater than that of element IV. The meniscus components may each consist of a negative element nearer to the diaphragm than a positive element cemented to it, the negative elements having smaller refractive indices, and the cemented surfaces being both concave to the diaphragm. The rear component may be as described in Specification 548,256. Complete data for two examples are set out.
Patent GB-877686-A (GB)
Title: Improvements in and relating to a.c. motor circuit arrangements
Inventor: MANDL ARTHUR
IPC: B60L3/10
Filed: 1957-03-01
Abstract: 877,686. Control of several A.C. motors. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. March 3, 1958 [March 1, 1957], No. 6949/57. Class 38 (3). Relates to the control of traction motors 1-4 which may be of the single-phase commutator type and which are adapted to drive separate wheels or wheel-pairs of the vehicle. The motors are connected in series with each other, and in parallel with the individual sections 1a-4a of a low-voltage transformer winding LV through conductors a-e. Thus, if the sections 1a-4a are equal, the terminal voltage of each motor is one quarter of the total voltage across the winding LV. If, for example, wheelslip occurs in connection with motor 2, the current flowing through that motor and section 2a is reduced substantially to zero, but the current passing through the motors 1, 3, 4 and the sections la, 3a, 4a is not affected. The conductors b, c, d carry current only when wheel-slip occurs, and so may be rated for intermittent duty. In another arrangement, the winding LV is replaced by an auto-transformer acting as a voltage divider, Fig. 2 (not shown). To detect wheel-slip, transformers have their primary windings connected in the leads b, c, d and their secondary windings are connected to rectifier bridges having their D.C. terminals connected in series to provide a signal output. When wheel-slip occurs, a substantial signal voltage is provided which may operate an alarm or control device, Fig. 3 (not shown).
Patent GB-398529-A (GB)
Title: Improvements in or relating to lapping machines
IPC: B24B37/02
Filed: 1932-03-08
Abstract: 398,529. Lapping-machines. BUDD, J. G. H. and HOLTZAPFFEL & CO., Ltd., Sharpleshall Works, Berkley Road, St. Pancras, London. March 8, 1932, No. 6953. [Class 60.] A machine for lapping the cylindrical surface of studs, rollers, &c. comprises a rotating lap 1, a stationary lap 2, and a rotating and gyrating work - holder 28 situated between the laps. The lap 1 is mounted on a platform 3 and driven therefrom by arms 1a and pins 3a, the platform being supported by a ball bearing 7 and secured to the top of a hollow spindle 9 driven by gearing 10, 10a, 11, 11a, and the platform has a raised lip 4 surrounded by a depression 5 communicating with channels 6, whereby excess lubricant &c. flows to a tray 60 with an outlet 61. The work-pieces are placed in slightly non-radial slots in the work-holder 28, and this is driven by pins 30 on a bearing- member 27 rotatable with a pinion 26 mounted on a stud 29 secured to a plate 22. The plate 22 is mounted on a plate 16, and may be adjusted angularly about a lug 16a thereon by a slot 24 and stud 23, the plate 16 having an extension 17 rotatably mounted in a hollow member 14, which fits in the spindle 9 and is driven thereby by pins 15 and slots in the spindle. The member 14 carries a gear wheel 13 meshing with a pinion 21 on a spindle 20 in the lug 16a, and the spindle also carries a gear wheel 25 meshing with the pinion 26; the work-holder thus is caused to rotate at a speed different from that of the lap 1, and also to move in an eccentric path, the degree of eccentricity depending on the adjustment of the plate 22. The upper lap 2 is secured by clips 48 to a member 47, mounted by trunnions 56a, 56b, so as to have some freedom of movement, on a spindle 50 movable axially in a bush 50a, which is adjustable in the split end of a bracket 51 adjustably mounted on a standard 53. The lap is adjustable up and down by a nut 57 engaging a thread on the spindle 50, and by inserting a spring 59 between the nut and a ball bearing 58 at the end of the bush 50a, the pressure of the lap on the work may be adjusted.
Patent GB-833841-A (GB)
Title: Improvements in devices responsive to the speed of a rotating shaft and in particular to centrifugal governors
IPC: G05D13/00
Filed: 1958-03-04
Abstract: 833,841. Centrifugal governors. ANCIENS ETABLISSEMENTS PANHARD ET LEVASSOR S.A., DES. March 4, 1958 [March 8, 1957], No. 6967/58. Class 57. [Also in Group XXIX] A device responsive to the speed of a rotating shaft 7 includes centrifugal means for controlling leakage from the output circuit of a pump 2 which feeds liquid under pressure to an hydraulic servomotor 5 the centrifugal means comprising an expansible split-ring 12 driven in rotation by the shaft and mounted floating in a recess 8 provided in the shaft. The inner surface of the recess is provided with annular grooves 17, 18 in communication via passages 14 with a conduit 16 leading back to the tank 1. A further groove 9 is in communication with the outlet side of the pump via an inlet member 11. The amount of liquid allowed to leak out to the return pipe 16 through the annular space between the outer surface of the ring and the inner surface of the recess decreases when the speed of the shaft increases and the liquid pressure transmitted to the servomotor 5 is thus proportional to the square of the speed. The device can be used for controlling automatic gear boxes.