Richardson's handbook of projection (1927)

Page scan 000109 from Richardson's handbook of projection

Record Details:

Title:
Richardson's handbook of projection
Date:
1927
Publisher:
New York : Chalmers Publishing Company
Volume:
Richardson's handbook of projection
Leaf #:
000109
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:
August 01, 2024
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MANAGERS AND PROTECTIONISTS 559 The armature stands vertical (on end), with the rotor of the alternating motor, 4, Plate 2, below, fan 5 above rotor 4, and armature 1 with commutator 2, above the fan. The upper end is supported laterally by a ball bearing, the construction which is shown in detail in Plate 3, Brush holders and brushes 17 are shown in Plate 2. The details of upper bearing 3, Plate 2, are shown in Plate 3, in which 4 and 5 are, respectively, an exterior and interior ball race, separated by steel balls 6, part 5, the interior race being clamped rigidly to shaft 9, by means of nut 2. Part 4 is stationary and sets in a recess in the main frame casting, Plate 3, Figure 179. the whole being covered by cap 1. Part 7 consists of a casting which is clamped between interior ball race 5, and the shoulder of shaft 9, so that it must revolve with the shaft at armature speed. This part (7) extends down into oil well 10. The oiling action is as follows : Oil well 10 is filled with oil up to approximately one-quarter inch of the top of the passage containing plug 13. Part 7 revolves at high speed, and, by the centrifugal action thus created the oil is forced up through passage 3-3y whence by gravity it returns again to the well through the bearing, thus flooding balls 6 with a continuous stream of oil.