Shock-absorbing push-pull coupling for tandem scrapers

Details Shock-absorbing push-pull coupling for tandem scrapers Shock-absorbing push-pull coupling for tandem scrapers

1975-06-09

1976-08-31

Wood, Jr., M. H.

Land vehicles

Wheeled

Articulated vehicle

280477, B60D 300

Patent

active

039776999

ABSTRACT:
A coupling capable of selectively connecting and disconnecting tractor-scraper units so that they may operate either in push-pull tandem relation or individually. A first push block and pulling hook are arranged at the rear of the front tractor-scraper unit, whereas on the front of the rear unit there are arranged a second push block for contact with the first push block and a ball for engagement of the pulling hook. The second push block is pivotally supported at its top end, and the bail is pivotally connected to the bottom end of the second push block. Arranged between the bottom end of the second push block and the tractor framework of the rear unit are a pair of what are herein termed two-way shock-absorber assemblies which are dually effective to minimize the shocks caused upon contact between the first and second push blocks and upon engagement of the pulling hook by the bail.

REFERENCES:
patent: 1884323 (1932-10-01), Snow
patent: 2783039 (1957-02-01), Wilson
patent: 3243203 (1966-03-01), Hermiz et al.
patent: 3434738 (1969-03-01), Campbell et al.
patent: 3740080 (1973-06-01), Kuhl
patent: 3906613 (1975-09-01), Chappell

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