Title: Adjustment means for roll crushers with gas hydraulic springs

Abstract: A roll crusher incorporates gas hydraulic springs to maintain the desired spacing between the crushing rolls and to provide overload protection. Featured are separate hydraulic means for backing off and then reapplying the hydraulic springs by altering their overall lengths so that roll spacing can be readily adjusted.

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Inventors: Schrimper, Vernon L. (Cedar Rapids, IA, US)
Lillig, Floyd A. (Cedar Rapids, IA, US)
Ulch, Darrell J. (Cedar Rapids, IA, US)

Application Number: 506349
Filing Date: 1974-09-16
Publication_date: 1976-02-17
Assignee: Iowa Manufacturing Company (Cedar Rapids, IA)
Primary Class(es): 241/231
Other Classes:
US Patent Ref:

2947485	Aug, 1960	Woodruff et al.	241/259.
3099406	Jul, 1963	Kautz	241/32.
3212721	Oct, 1965	Asplund et al.	241/259.
3315902	Apr, 1967	Pollitz	241/231.
3417928	Dec, 1968	Gundlach	241/231.

Other Refs:
Primary Examiner: Custer, Jr., Granville Y.
Assistant Examiner: Goldberg, Howard N.
Attorney: Simmons; Haven E., Nemmers; James C.