Richardson's handbook of projection (1927)

Record Details:

Title:
Richardson's handbook of projection
Date:
1927
Publisher:
New York : Chalmers Publishing Company
Volume:
Richardson's handbook of projection
Leaf #:
00049
Language:
English
Subjects:
Motion Pictures, Motion Picture Technology
Collection:
Books
Format:
Books
Contributor:
Media History Digital Library
Sponsor:
Media History Digital Library
Coordinator:
Media History Digital Library
Description:
Date Added:
July 18, 2024
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MANAGERS AND PROJECTIONISTS 499 electrical connections of the machine will be made by a competent electrician. FINAL PREPARATIONS FOR STARTING.— After the machine is installed and the electrical connections complete, before starting, revolve the armature by hand and see that it moves freely. Examine the armature and commutator carefully to see that they are not bruised and that everything is in good condition. Examine the face of the brushes and test the brush tension. (See General Instruction No. 7.) Let the oil out of the oil wells and fill them up with fresh oil. (See General Instruction No. 3.) Having taken these precautions, the machine is ready to be tested with current. CENTRAL INSTRUCTION NO. 3— OIL.— It may be stated as a general proposition that the various largely advertised patent oils are absolutely unfit for motor or generator lubrication. If they be used it is more than likely that there will be trouble with the bearings, or a comparatively frequent and unnecessary expense for bearing renewals, in addition to which there will be a still more serious item, viz.: worn journals. The character of the oil to be used will depend to a considerable extent upon climatic conditions, but it is safe to say that the oil used by the local power plant for lubricating its generators will fill the bill. The superintendent of the plant will undoubtedly extend the courtesy of telling you what it Figure 148.