. Electrical world. their refinement of electrical design and excellence of me- FIG. I.—DET.\ILS OF chanical execution. This is well illustrated in a new type of dimmerbeing placed upon the market by the Cutler-Hammer ManufacturingCompany, several illustrations of which are given herewith. Thisnew type is designed to meet the best requirements of stage lighting,which involve subdividing the lamps into a comparatively largenumber of circuits, thereby assuring more perfect control of thelighting and enabling special effects to be better obtained. In the dimmer illustrated, known as the
. Electrical world. their refinement of electrical design and excellence of me- FIG. I.—DET.\ILS OF chanical execution. This is well illustrated in a new type of dimmerbeing placed upon the market by the Cutler-Hammer ManufacturingCompany, several illustrations of which are given herewith. Thisnew type is designed to meet the best requirements of stage lighting,which involve subdividing the lamps into a comparatively largenumber of circuits, thereby assuring more perfect control of thelighting and enabling special effects to be better obtained. In the dimmer illustrated, known as the Simplicity type, each unit orplate has a maximum capacity for 50 i6-cp lamps, which numbermost nearly meets the average conditions for good stage lightingeffects. As will be noted from the illustration, the dimmer unitsconsist of circular plates mounted on an open frame, to which theyare fastened by screws passing through three lugs into wrought-ironconnecting bars. One of the features of this new type is the ease. FIG 2.—THE.\TRE DIMMER. with which a section may be removed, which operation is indicatedin Fig. 2. It is merely necessary to remove a pin from the operatinglever and the three screws above mentioned, when the plate can belifted out. The several plates consist of a base of insulating materialcarrying the contact parts, as shown in Fig. 2, and all current-carry-ing parts essential to the operation of the dimmer, including levercontacts, resistance and binding posts, are mounted on this one in-sulating base and form a complete rheostat in themselves. The plateis enclosed by the gridiron casting shown in the illustration, thissimply forming a cover and finish and carrying the lugs wherebythe plate is secured to the frame. The several levers connected withthe rheostat rack arm are loose on an interlocking shaft and maybe moved without reference to the position of the master lever. Aslotted cam. Fig. 3. is placed at the side of the lever and fixed to theshaft with set
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectelectri, bookyear1883
