Exhibitor's Trade Review (Nov 1925 - Feb 1926)

Record Details:

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December 26, 1925 Page 103 Powerlite Reflector Lamp This company has long been fully aware of the value of the reflector lamp but did not feel justified in placing one on the market until a lamp of this type could be offered to the motion picture industry which would fully live up to the reputation we have established for Power's Projectors and Power's Products. In offering Powerlite we feel that a reflector lamp has finally been produced which overcomes the serious defects of the earlier lamps and in addition has a number of important improvements and patented features which will win the strong approval of exhibitors, managers and projectionists. Control apparatus is very neat and compact and is attached inside the lamphouse, thus eliminating the necessity for extra shafts, gears and control handles. Constructed so that perfect control of the arc is secured and carbons feed intermittently and automatically upon an infinitesimal rise of voltage brought about by the burning of the carbons. Control apparatus is thoroughly protected and it is impossible for the current to reach the motor until the arc is struck regardless of whether the line switch is open or closed. This permits the control motor to be wound for proper arc voltage and to operate positively at full voltage as soon as it is brought into the circuit. The control mechanism forms part of the lamp itself and only the necessary controls project from the rear of the lamphouse. The method of inserting carbons will be found a real convenience to the projectionist. It is merely necessary to press a lever, insert carbons into the carbon holders FROM THE SIDE and release the lever. The carbons are then locked into position ready for operation without the use of tools. Vertical adjustment of the negative carbon and lateral adjustment of the positive carbon have been provided for in a manner which will be found very satisfactory to the projectionist and Powerlite also permits an exceptionally long carbon trim. An improved friction device allows the arc to be struck and fed without unlocking it from the motor feed system. Special attention has been given to the design and construction of the mirror which has been made according to our own specifications. Improved insulated mirror supports and latch allow the mirror to be readily removed for cleaning. A radical departure and a great improvement in lamphouse construction has been made in Powerlite by having the door slide quickly and easily into the top of the lamphouse. This action is similar to that of the door in a sectional bookcase and leaves the interior clear and accessible for the projectionist's manipulation.. The lamp slides easily into or out of the lampihouse and this will be found extremely convenient when cleaning or making replacements. Powerlite lamphouse is of ample capacity and this is extremely important as the reflector lamp requires a certain minimum space in order to secure the most efficient results. Stereopticon attachment may be easily swung into position for projecting slides, operating in a manner similar to that of the ordinary arc lamp. Entire lamphouse is finished in black crystallized lacquer and makes a very attractive appearance. Powerlite can be attached in about five minutes to Power's, Simplex or Motiograph and no lining-up or similar adjustments are required. LAMP PARTLY OUT OF LAMPHOUSE WITH DOOR HALF OPEN INTERNATIONAL PROJECTOR POWER'S DIVISION 90 GOLD STREET DOOR SLIDES EASILY INTO TOP OF LAMPHOUSE CORPORATION NEW YORK, N. Y.