baber/WOPTO huggingface dataset:
Patent GB-533657-A (GB)
Title: Improvements relating to method and apparatus for packaging articles
IPC: B65B9/06
Filed: 1939-10-03
Abstract: 533,657. Packaging articles. SALFISBERG, L. L. Oct. 3, 1939, No. 27100. Convention date, Nov. 17, 1938. [Class 94 (i)] A method of packaging articles consists in depositing them at intervals between juxtaposed layers of thin sheet material while the layers are moving horizontally, and sealing the material around the articles to form a strip of connected packages. The material may be paper or any other thin material which is coated with thermoplastic substance or is itself thermo-plastic. The method is particularly intended for packaging oval or spherical articles or tablets. A strip S, Fig. 1, of the flexible material is drawn from a roll A, and passes over a folding- arm 2 by which it is folded longitudinally to form superposed layers 3, 4 spaced apart. The layers pass between guide rolls 5 and a feeding- mechanism B by which articles are deposited at regular intervals between the layers. The material is drawn along by the sealing rollers 13, 14 which seal the layers of material along the edges 21, Fig. 11, and transverse portions 20 to form successive envelopes 22 each containing an article G. The strip of envelopes passes between air jets K and then between rotating brushes D which maintain the strip in tension without crushing the contained articles. Finally, the strip passes through a shearing-device E which cuts it into sections of pre-determined length. The feeding mechanism B consists of a horizontal disc 6, Fig. 4, with radial arms which enter between the layers 3, 4 of material. The disc rotates and the arms carry articles G singly from a shoot 1 and deposit them between the moving layers 3, 4 where they are retained by friction. The sealing-rollers 13, 14 have recesses to prevent crushing the articles G, but press together the parts 20, 21 of the material to crimp and seal it. The rollers may be heated if the material is beat-scalable. Blades 32 may be carried by one of the rollers to form short slits 34, Fig. 11, in one edge of the sealed strip to facilitate the removal of the articles from the packages.
Patent GB-465767-A (GB)
Title: Improved apparatus for making joints in woven wire fabric
IPC: B21F33/00
Filed: 1936-04-14
Abstract: 465,767. Making woven wire fabrics. TENNANT, W. J. (Buell, E. J.) April 14, 1936, No. 27153. Divided out of 457,845. Drawings to Specification. [Classes 83 (ii) and 83 (iv)] Soldering; uniting by fusion.-In an apparatus for soldering or welding the ends of woven wire fabrics, such as Fourdrinier belts, having means for retaining the ends of the fabric in close opposing relationship to each other, the heat applicator is caused to move progressively across the fabric to effect the joint by power actuated means. The machine is fully described in Specification 457,845.
Patent GB-260620-A (GB)
Title: Process and apparatus for regenerating vulcanised rubber
IPC: C08J11/16
Filed: 1926-10-29
Abstract: 260,620. Soc. Italiana Pirelli, (Assignees of Mrach, A.). Oct. 31, 1925, [Convention date]. Drawings to Specification. Devulcanizing and using waste rubber.- Vulcanized rubber is regenerated by adding to it a solution of caustic alkalis or potassium and sodium carbonates of moderate concentration (35‹-36‹ BÚ) in quantities slightly in excess of that chemically corresponding to the total sulphur in the rubber, and raising the temperature to that required, under atmospheric pressure, while agitating the mass. In an example, 220 lbs. of rubber scrap is ground and placed in a rotatable drum capable of being heated and cooled externally, with 66 lbs. of caustic soda at 35‹ BÚ. The drum is rotated and heated rapidly to 135‹ C. and then slowly to 210‹ C., the whole process taking seven hours. Fabric may be destroyed by a preliminary acid treatment. The Specification as open to inspection under Sect. 91 (3) (a) states that other salts capable of combining with sulphur may be used. This subject-matter does not appear in the Specification as accepted.
Patent GB-1248713-A (GB)
Title: Apparatus for handling coiled strip
IPC: B21C47/24
Filed: 1970-06-05
Abstract: 1,248,713. Winding and reeling. VEREINIGTE OSTERREICHISCHE EISEN-UND STAHLWERKE A.G. 5 June, 1970 [6 Aug., 1969], No. 27158/70. Heading B3E. Apparatus for use in rolling mills which serves to remove coils 4 of strip from upcoilers comprises a coil car 6 carried on rails 5 and a lifting table 11 for receiving the coils, control means for operating the table and at least one feeler accommodated by or adapted to be lowered into a coil-engaging surface of the table and which operates the control means to stop the upward movement of the table when a predetermined relative position of the coil and table has been reached. The coil car has vertical guide-rods 10 slidable in bushings 9, the rods supporting the table 11 which is actuated by an hydraulic cylinder 12 (Fig. 3). The table has two coil-engaging surfaces 13 separated by a transverse groove 14 containing a spring-loaded feeler bar 15 normally standing proud of the surfaces 13. When the bar is moved into alignment with the surfaces by engagement of the table with the coil 4 the bar actuates a mechanical switch 20 to stop the elevation of the table. Alternatively a sensor or a light barrier may be provided to operate a switch. When the table stops segments 3 of the mandrel 2 are retracted and the coil is withdrawn by movement of the car 6. In a modification the table 11 is carried by a platen 21 on uprights 22 (Fig. 4, not shown). The feeler 23 is provided with brake linings 31 so that as well as actuating a control switch 20 a pneumatic cylinder 28 can be actuated to use the feeler as a brake to tighten the outermost convolution of the coil.
Patent GB-851741-A (GB)
Title: Improvements in or relating to the preparation of 6-methyl steroid compounds
Inventor: PETROW VLADIMIR
IPC: C07J75/00
Filed: 1957-08-28
Abstract: The invention comprises steroid compounds of the general formulae <FORM:0851741/IV(b)/1> <FORM:0851741/IV(b)/2> wherein R represents an acyl group containing up to 10 carbon atoms, and a process for the preparation of 3b -hydroxy-6-methyl-25D-spirost -5-ene and the corresponding 3b -acyloxy compound by reacting 3b -acyloxy-25D-spirost-5-ene with a hypobromous acid or with N-bromoacetamide and perchloric acid to form a 3b -acyloxy-5a -bromo-25D- spirostan-6b -ol, oxidising this compound to form a 3b -acyloxy-5a -bromo-25D-spirostan-6-one, replacing the bromine atom in this compound by hydrogen to form a 3b -acyloxy-5a :25D-spirostan-6-one, reacting this compound with a methyl magnesium halide and reacylating the product to form a 3b -acyloxy-6a -methyl-5a :25D-spirostan-6b -ol, and dehydrating this compound with thionyl chloride in a tertiary base such as pyridine to form the desired 3b -acyloxy compound which may be hydrolysed to the corresponding 3b -hydroxy compound.  One detailed example is given illustrating the above process with particular reference to the 3b -acetoxy starting compound, intermediate products and final product which is then hydrolysed as above.  Specifications 841,870 and 851,742 are referred to.
Patent GB-1286779-A (GB)
Title: Electric motor control circuit
IPC: H02P8/20
Filed: 1971-04-19
Abstract: 1286779 Controlling AC motors NATIONAL CASH REGISTER CO 19 April 1971 [22 April 1970] 27238/71 Heading H2J A motor having two series windings 14, 16 is controlled by a circuit comprising a phase shifting network 18 in parallel with the motor and including a capacitor, a switching means which supplies A.C. directly to one winding and via the capacitor to the other winding to cause rotation of the rotor, and a switchable supply of D.C. suppliable to one of the windings for braking the motor; the switching means comprising first and second controlled rectifiers connected in parallel to each other with opposite polarity and connected to one plate of the capacitor, the D.C. supply being connected via its switch to the opposite plate of the capacitor such that with the rotor rotating operation of the D.C. supply causes D.C. potential to be supplied via the capacitor to render non- conducting the currently conducting controlled rectifier. An SCR control circuit 46 has four outputs 48, 50, 52, 54 connected to the gate electrodes of SCR's 24, 26, 28, 30, 42, 44. To rotate the motor in, say, clockwise direction, high frequency (e.g. 1000 Hz) pulses are fed from output 48 to the SCR's 24, 26 which are connected to a low frequency (e.g. 50 Hz) A.C. supply at terminals 20, 22 so that SCR 24 conducts during each positive half-cycle and SCR 26 during each negative half-cycle to supply current through the winding 14 and a potential shifted by 90 degrees due to the capacitor 36 and a resistor 38 to the winding 16. Braking of the motor is achieved by stopping the pulses from output 48 and emitting a single pulse from output 54 during a positive half-cycle which renders SCR 44 conducting to allow D.C. to pass from an A.C./D.C. converter 40 to the winding 16 for braking and to the capacitor 36 for creating a voltage to render SCR 24 non- conducting. Counter-clockwise rotation and braking therefrom are achieved in an identical manner using pulses from outputs 50, 52, SCR's 28, 30 and 42, capacitor 34 and resistor 32. To ensure that clockwise or counter-clockwise rotation is achieved when output 50 or 52 are initiated the motor is appropriately "held" by initially emitting a pulse from outlet 54 or 52 to render SCR 44 or 42 conducting and SCR 42 or 44 non-conducting by applying a voltage across capacitors 36, 34, respectively. The first half cycle conducted through SCR 24 (or SCR 28) develops a potential across the capacitor 36 (or 34) which renders SCR 44 (or SCR 42) non-conducting.
Patent GB-1443659-A (GB)
Title: Gas turbine engine
IPC: F02C3/08
Filed: 1974-06-20
Abstract: 1443659 Shafts FORD MOTOR CO Ltd 20 June 1974 [5 July 1973] 27318/74 Heading F2U [Also in Divisions F1 and F4] To reduce the length of a drive shaft 54 in a gas turbine engine without reducing its elasticity, the shaft is provided with a sleeve portion 102 within which is threaded a shaft 110 keyed at its free end 106 to a hollow bolt portion 108. The latter carries a nut 124 which urges ceramic turbine rotors 112, 114 together and into engagement with sleeve portion 102 via toothed couplings 119, 122. A further sleeve 104 is brazed within portion 102 to provide a barrier between bearing lubricant flowing through bore 310 and cooling air directed to bore 308.
Patent GB-426721-A (GB)
Title: Improvements in or relating to copper smelting
IPC: C22B15/14
Filed: 1933-10-04
Abstract: In a process for refining copper in which a copper matter is first produced, e.g. in a reverberatory furnace, and afterwards treated in a converter, the amount of iron sulphide in the charge of molten matter is regulated to a point at which blowing will be associated with a rise of temperature sufficient to volatilize the bismuth present in the matter and the charge blown so as to effect such volatilization in the early stages of the blowing before material amounts of metallic copper are present.  Cold cuprous material may be added after the volatilization to regulate the temperature of the bath.  The smelting in the furnace is carried out so that a sufficiency of iron sulphide, e.g. of the order of 5 per cent, is left in the matte before the blowing or if the ores contain a large quantity of iron sulphide, the ore may be roasted or iron oxide added before smelting in the furnace.  If the ore does not contain an excess of iron sulphide, the tendency in the furnace to eliminate a portion of the sulphur may be counteracted by the addition of a reducing agent such as coal or iron sulphide to the charge. Specification 413,394 is referred to.
Patent GB-363312-A (GB)
Title: Apparatus for painting, kalsomining and the like
IPC: A46B11/06
Filed: 1930-09-15
Abstract: <PICT:0363312/III/1> <PICT:0363312/III/2> In apparatus for applying paint, distemper and damp-resisting fluids to walls, ceilings, floors or structural ironwork in which the liquid is supplied to a hand brush 18, Fig. 1, through a flexible pipe 8 from a reservoir 1 fitted with an air pump 2, a small receptacle 31, Fig. 7, may be fitted inside the reservoir 1 on a flange 29, to receive a small container 32 for paint &c. and the discharge pipe 7 is made telescopic so as to reach the bottom of the container 32 or the reservoir 1.  The supply of liquid to the brush is regulated by a valve 9 and by a piston valve depressed by a knob 26.  The liquid passes to a fan-shaped distributer 17 of sheet metal or leather placed in the fibres of the brush, and affixed to the supply pipe by a bayonet joint.  A lip 23 around the brush stock serves to catch excess liquid.
Patent GB-265278-A (GB)
Title: Improvements in reduction gears, fine adjustment devices and the like
IPC: H03J1/14
Filed: 1925-11-02
Abstract: 265,278. Hesketh, B. Nov. 2 1925. Wireless tuning-apparatus, adjustment devices for.-In epicyclic friction reduction gearing for use in electric condensers, variometers, &c., V-rimmed planet pinions 7 of two diameters carried on arms 6 rotated by the fineadjustment knob 5 gear with a stationary ring 9 and with a ring 8 of different diameter secured to the movable plates &c. In a modification, the pinion rims may be formed of flexible material and the rings 8, 9 are provided with right-angled extensions formed with friction surfaces engaging the V-rims. In this form, the rings 8, 9 may be of equal diameters, the axes of the pinions being tilted so that they are of unequal diameters. The angle of tilt may be 45‹ and the angle between the V-rims be 90‹, the rings 8, 9 having their rims at right angles so as to engage the surfaces of the pinions. The ring 9 need not be stationary.
Patent GB-173084-A (GB)
Title: Improvements relating to driving gear for bicycles, tricycles and the like
IPC: B62M1/24
Filed: 1920-09-29
Abstract: 173,084. Fearn, W. H., Rafferty, J. L., and Saynor, A. Sept. 29, 1920. Treadle mechanism for bicycles, tricycles, &c., of the kind wherein pivoted treadle-levers actuate by connecting-rods a chain-wheel or the like disposed rearwardly of the machine, is characterized by the fulcra n of the levers m being disposed between the pedals p and the connecting-rods o<1> and the rods being attached to the spindle f of the chain-wheel g or the like at points o that are not diametrically opposite each other.
Patent GB-248432-A (GB)
Title: Band press for the separation of solids from liquids
IPC: B01D33/04
Filed: 1924-11-19
Abstract: 248,432. Jensen, S. E. J. M. Nov. 19,1924. Oil-presses. - In a travelling band press in which the lower band is perforated, one of the drums for each band is rotatable about a stationary axis to provide an abutment for the tension in the band, and the other drum or drums is or are rotatable about an axis movable in a vertical direction in opposition to yielding force. The drums for the respective bands alternate with one another in the horizontal direction at such distances apart and the bottoms of the drums for the upper band are so far below the tops of the drums for the lower band as to ensure that the material between the bands will be subjected to pressure against one of the drums practically throughout the pressing operation. The axis of a drum D for the lower band A is mounted on a slide Y constantly tending to rise under the pressure of a weighted lever L. The axis of a drum G for the upper band is mounted on a slide constantly tending to descend under the load of a weight P and movable on a guide Z hinged at R. Rollers S exert pressure on the bands where they pass over the abutment drum E for the perforated band. The rollers S are carried by a pivoted transverse lever operated on by a lever and weight arrangement. A guide, N<4> prevents movement of the rollers S along the band. The weights operating on the drums and pulleys are adjusted to give a gradually increasing pressure. A scraper H removes liquid from the back of the band A and a scraper I removes liquid from the drum E which is grooved. Scrapers J, K remove solid material from the bands where they diverge. The holes in the perforated band are tapered, the smaller ends of the holes being on that surface of the band on to which the material to be treated is fed. Cheek-pieces T<1> retain the material between the bands. Apparatus for cleaning the band is mounted on a link U<#> pivoted to the framework of the machine, and comprises two open-mouthed chambers U<1>, U<2>. Air or water under pressure is supplied to the chamber U<1> and passes across the band and is discharged from the chamber U<2>. Pressure exerted on the chamber U<2> by a spring U<5> and a screw U<6> passing through a stirrup attached to the lower chamber U' ensures a fluid-tight joint.
Patent GB-1473177-A (GB)
Title: Wheel rim assembly
IPC: B60B31/04
Filed: 1974-06-21
Abstract: 1473177 Vehicle wheels CATERPILLAR TRACTOR CO 21 June 1974 [17 Sept 1973] 27716/74 Heading B7C A pneumatic tyre and split rim assembly includes means which prevents disassembly of the rim parts until deflation of the tyre has been initiated. As illustrated, the means includes a ring 32 bolted to rim part 16 by bolts 34 to prevent removal of bolts 18, and a cap 30 removably secured on a pipe 28 which is in direct communication with the tyre inflation cavity. A projection 38 on the cap co-operates with an aperture in the ring to prevent rotation of the latter when the bolts 34 are removed in the event that the cap has not been released from the pipe 28. Removal of the cap to initiate tyre deflation and removal of the bolts 34 will allow the ring to be rotated to align notches 42 with lugs 44. Thus the ring can be removed and the bolts 18 will then be accessible.
Patent GB-835330-A (GB)
Title: Improvements in or relating to thermoplastic materials
IPC: C08L23/20
Filed: 1957-09-03
Abstract: A thermoplastic composition consists of a mixture of isotactic polypropylene and isotactic polybutene.  The composition, which is conveniently prepared by mixing on a roll mill at 160-180 DEG  C., has improved physical properties as compared to either component alone.  Specified applications of the composition are in the manufacture of film (such as tubular film made by blow moulding), insulated copper wire and coatings on metals, and in the moulding or extruding of articles such as sheets, plates, tubes, pipe fittings, gaskets and decorative articles.  In Example 4 the composition comprises dialkyl phenol sulphide as antioxidant.
Patent GB-1356852-A (GB)
Title: Apparatus for firing electrical detonators
IPC: F42D1/05
Filed: 1971-06-14
Abstract: 1356852 Firing detonators SALZDETFURTH AG 14 June 1971 [2 July 1970] 27759/71 Heading H2H A detonator firing device includes a switching circuit which operates with single- or polyphase current 1 for energizing a detonation circuit 9 and which incorporates a thyristor 7 for controlling the supply of power to the detonation circuit. The thyristor 7 is controlled by a device 15 which switches it on when the voltage is positive increasing or at its maximum: this is effected by phase-shifting the voltage applied to the control electrode of the thyristor relative to the anode voltage thereof so that a current pulse is applied to the control electrode at the appropriate moment. Current flows until the detonators explode (thus breaking the circuit) or until the voltage has passed through its maximum and decreased sufficiently to turn off the thyristor (arranged to be after at most 10 msec., preferably after 4À5-5À5 msec.). An arrangement of relay-controlled switches 4, 5, 8, 10, 13 is also incorporated in the device: these are closed before detonation and opened again after the detonators have exploded but before circuit 9 is disconnected.
Patent GB-535896-A (GB)
Title: Improvements in and relating to froth flotation apparatus
IPC: B03D1/16
Filed: 1939-10-13
Abstract: 535,896. Froth Notation apparatus. MINING PROCESS & PATENT CO. Oct. 13, 1939, No. 27834. Convention date, Nov. 25, 1938. [Class 82 (ii)] A froth flotation apparatus in which a rotary impeller is provided with an overhanging hood, has a dished impeller adapted to provide an upward component to matter deposited thereon and is provided on its upper surface with blades having their top surfaces downwardly inclined to the periphery of the disc and a hood having its undexside downwardly inclined in converging relation to the periphery of the disc. The impeller may be provided with blades on its underside and these blades as well as the other blades may project beyond the periphery of the disc in order to promote a thorough intermixture of solids, gas and liquid, and be spaced from the hub of the impeller. The impeller 14, Fig. 8, comprises a dished disc 14a with radial vanes 14b on its underside and blades 14c on its upper side spaced from a hub 14d, and extending to or slightly beyond the periphery of the disc. The hood 16, Fig. 7, is provided with a central aperture 23 and on its periphery with radially arranged downwardly extending vanes or baffles 24, the inner end of the latter being spaced from the periphery of the impeller 14. To relieve the pressure in the discharge zone of the apparatus and to permit the escape of lighter impurities and gas, the hood is provided in its peripheral portion with a series of apertures spaced at intervals preferably between the baffles 24. The apparatus may be mounted in cells such as A, B, C, Fig. 2, the pulp entering by a conduit 12 into a hollow column 13 on to the impeller 14 mounted on a shaft 15. In cell A the column 13 is short and is closed by a cover 17 having an opening 18 for re-circulation of the pulp. Air under pressure enters the column by one or more pipes 19. After treatment in cell A the pulp passes 'over an adjustable cover 20 into a passage 22 and thence into the inlet 12 of cell B, the central column 13a of which extends above the liquid level. After treatment in cell B the pulp passes over another adjustable cover 20 into cell C similar to cell A. To recirculate matter into the impeller 14, a flat annular plate 24a projects inwardly under the impeller 14. U.S.A. Specification 1,985,153 is referred to.
Patent GB-1359787-A (GB)
Title: Screw and nut gearing device including a friction coupling
IPC: F16D7/02
Filed: 1972-06-14
Abstract: 1359787 Screw and nut actuators DUFFNORTON CO Inc 14 June 1972 [15 July 1971] 27879/72 Heading B8J [Also in Division F2] A jack, in which an electric motor 12 moves a nut 32 axially by rotating a screw 26 through a self-locking transmission mechanism 16, a shaft 18, a conical pinion 22 and a spiroid gear 24, has the load attached to a block 44 which is attached, through a friction coupling 52 to a sleeve 34 attached to the nut 32. The friction coupling 52 allows the nut to rotate with the screw on overload (or on the nut reaching a limit of its travel) and so protects motor 12 and gearing from damage. The coupling 52 comprises a couple of Belleville washers at either end of a cylinder 54, and held to it by a nut 92 and bolt 76 to which the block 44 is attached.
Patent GB-319661-A (GB)
Title: Improvements in or relating to optical systems for signal lamps
IPC: B61L5/18
Filed: 1929-09-13
Abstract: 319,661. Pintsch Akt.-Ges., J., Sept. 25,1928, [Convention date]. Lenses.-A signal lamp is fitted with a single lens 1 and a catadioptrical ring 2 the outer face of which is so constructed as to cause total reflection of light proceeding from a source of light 3 up to an angle of 180‹. The lens and ring may be cemented together at 4 and their axes may be at an angle to each other so as to project the beam of light along a curved or ascending railway track. The lens may be made aspherical or otherwise modified, and a concave reflector may be disposed behind the source of light. Reference has been directed by the Comptroller to Specification 23491/09.