1884. PROF. G. FORBES. 11244. Improvements in Dynamo-Electric Machines. Relates to improvements to Patent No. 3115, 1883, in the construction of armatures for dynamo-electric machine. 1884. G. SCARLETT. 13162. Improvements in Electro-Dynamic or Dynamo-Electric Machines. Relates to the construction of a machine with a revolving magnetic ring or core separated at intervals by insulating material and surrounded by a series of stationary coils. 1884. W. R. LAKE. 14779. Improvements in Dynamo-Electric Machines. Describes the non-employment of iron in the rotating armature, and the construction of an armature with radial strips of copper, connected by other strips running in circular directions, to form circuits for the current to circulate many times in opposite directions through the strips. Relates to the construction of an armature wound in such a manner that at intervals the conductor takes a radial direction with respect to the boss of the armature, and mounted with respect to the field magnets that the radial portions of the conductor cut the lines of force at right angles. 1884. H. F. JOEL. 17091. Improvements in Magnetic Electric Machines. Relates to the construction of laminated magnet cores fitted into solid polepieces, or laminated pole-pieces fitted into solid cores. 1885. A. F. LINK. 2671. Improvements in Dynamo Machines. Relates to the use of insulated iron wire for armature. Also describes use of poles of field magnets having a number of channels or recesses for the reception of an equal number of revolving armatures. 1885. 2776. W. H. ALLEN, R. WRIGHT, and G. KAPP. Improvements in Dynamo-Electric Machines, Magneto-Electric Machines, and Electro-Motors. Describes various methods of construction of iron annular cores of plates or iron wire. 1885. G. HOOKHAM. 3212. Improvements in Dynamo-Electric Machines and Electro-Motors. Describes the construction of iron cylindrical cores having longitudinal slots around their circumference for receiving the wire; also describes several methods of winding wire on same. Improvements in and relating to Electrical Generators and Motors. 3446. Describes method of winding wire of dynamo machines so that the number of turns in the shunt coil bears the same relation to the number in the series coil as the resistance of the shunt coil bears to the sum of the resistances of the series coil and the armature. 1885. T. J. HANDFORD. 3524. Improvements in and relating to Electro-Dynamic Motors, parts of which Improvements are also applicable to the Regulation of Dynamo-Electric Generators. Describes dynamo having field magnets independent of the armature circuit, and variable, shunted upon the main field-coils, whereby the magnetising effect of independent coils is varied or reversed. 1885. 3525. R. P. SELLON and J. S. SELLON. Improvements in Apparatus for Distributing and Utilising Electricity. Describes the winding of an annular core with two distinct and independent sets of coils, whereby a current of high tension may readily and simply be converted into one of low tension. 1885. A. RECKENZAUN. 3599. Improvements in Electro-Motors or Dynamo-Electric Machines. Describes construction of permanent field magnets of a number of horseshoe lamina or plates without yoke-pieces, and connected by segmental poleplates. 1885. T. J. HANDFORD. (From R. H. MATHER.) 8566 Improvements in or relating to Dynamo-Electric Machines, for Preventing Sparking in such Machines. Describes a spark-preventing device, consisting of an electro-magnet whose helix is located in the main circuit of the machine, and so placed that the neutral point or points of the armature of such machine shall be within the magnetic field of this electro-magnet. A New or Improved Electric Lamp of the Arc type. In this lamp both carbons are movable, the upper one being held by a clamp fixed to a hollow iron core surrounded by a coil of fine wire; the iron core with the fine wire wound round it, moves inside a thick wire solenoid; the weight of the upper core and carbon raises the lower carbon by means of pulleys and cords. 1882. J. D. F. ANDREWS. 1324. Describes lamp having upper carbon-holder attached to a tube forming one of the guides; inside this tube is a piston which allows the tube with its holder to descend gently, the regulation of the fall of the tube being effected by means of a clutch, which is actuated by the core of a solenoid separating the bottom carbon from the top when the lamp is started. arranged side by side. Describes also a number of carbon rods The upper set are regulated by a conical roller, and the bottom set press against shoulders provided for same, the carbons being raised by spiral springs. An incandescent lamp is described in which, instead of employing a fibre, a thin plate of carbon is used, having its edges clamped between the limbs of a bent platinum wire. 1882. W. JEFFERY. Improvements in Electric Arc Lamps. 1570. The upper carbon is attached to a rod which passes through a loop or ring acting as a clutch; the ring is moved by the armature of an electro-magnet. The bottom carbon is fixed. 1882. W. R. LAKE. 1611. Improvements in Electro-Magnetic and Regulating Apparatus, chiefly designed for use in Electric Lamps.-(Provisional.) Describes the use of solenoid with iron core to actuate the clockwork regulating the movement of the upper carbon. In this lamp the upper carbon rod passes through a hollow core contained in a solenoid; to the lower end of the core is attached a sleeve or chamber which contains a number of balls around the rod, and arranged to grip the rod. 1882. J. BROCKIE. 1713. Improvements in Electric Arc Lamps. The upper carbon rod is provided with a rack, gearing into a wheel train; the regulation is effected by the release of a fly by means of an iron core contained in a solenoid forming a shunt to the arc. 1882. A. B. BROWN. 1867. Improvements in Electric Arc Lamps. Uses clutch for forming the arc by raising the upper carbon; the regulation is performed by means of a valve, allowing the passage of liquid from under a piston contained in a cylinder. 1882. W. T. WHITEMAN. Improvements in Electric Lamps. Improvements to Lamp described in Patent 2038, 1881. 1915. This consists of an oscillatory horse-shoe electro-magnet, one pole of which is in juxtaposition to or in contact with an iron rod carrying one of the carbons, and the other pole of which is in contact with a magnetic brake and in proximity to a fixed block of iron, the attraction between which block and the magnet, tends to separate the carbons or to oppose their approach towards each other. 1882. J. LEA. Improvements in Electric Arc Lamps. 1919. Upper carbon-holder is held in position by three rollers, two of which are fitted to a frame carrying a friction wheel, to the axle of which is fitted a pinion in which the rack of upper rod works. Two solenoids are provided; the iron cores actuate levers which control the movement of the friction wheel. 1882. T. J. HANDFORD. Improvements in or relating to Electric Lights. 2072. Describes clutch actuating upper carbon-holder. Special reference to wire on coils for regulating. 1882. C. LEVER. Improvements in Electric Light Apparatus. 2092. Describes clutch used to separate the carbons, actuated by a spring and lever; use of regulating coils, wound and connected, to shunt the current from arc in regulating. 1882. E. L. VOICE. 2288. Describes an arrangement in which clutches are formed from two semicircular cores contained in a solenoid surrounding the upper carbon rod; the semi-circular cores are pivoted at their lower end, and grip the carbon rod when the current passes. The arc is formed by the cores being raised by a separate armature. 1882. 2370. J. BROCKIE. Improvements in Electric Arc Lamps. In this lamp a train of wheels arranged in a rocking frame are employed; the carbons are separated by a movement of the frame, and the feeding of same is effected by an iron core contained in a solenoid releasing a brake wheel contained in the movement. 1882. W. H. AKESTER. 2419. 1882. Improvements in Electric Arc Lamps. Upper carbon rod is grooved spirally in the form of a screw. T. E. GATEHOUSE and H. R. KEMPE. 2569. In this lamp the carbons are regulated by means of a reciprocating pawl, which engages with the teeth to drive a roller, which moves the carbons, and which is controlled by an electro-magnet or solenoid having its attractive force determined by the resistance of the arc. |