Table of Contents
Advertisement
MODEl Cl
CUSTOMER ENGINEERING
Removal
FEED ROLLS. Refer to Model Bl section.
FRONT AND REAR PRESSURE-LEVERS. Refer to
Model Bl section.
Adjustment
Refer to Model Bl section.
DECELERATOR
The decelerator is a control mechanism for the
centrifugal-governor.
It
consists of a series of spring
clutches and cam arms that control the action of the
centrifugal-governor (Figure 17). The decelerator-
governor action absorbs carriage shock and controls
the speed of the moving carriage. It eliminates the
tab rebound check-lever, the air cylinder and the
horseshoe shaped tab-lever mounting-bracket.
The centrifugal-governor operates as the carriage
moves to the left during tabulation. As the main-
spring and drum unwind they rotate the hub and
gear assembly, which drives the pinion gear on the
governor shaft. During left to right motion of the
carriage, a spring clutch allows the mainspring and
drum to rewind without rotating the hub and gear
assembly and/or operating the governor.
A spring clutch is a ratchet like mechanism which
utilizes a coiled spring fitted closely about a shaft.
When turned in one direction the spring tightens
Figure 17. Decelerator
22
(
Advertisement
Chapters
Table of Contents
