Engagement devices

Details Engagement devices Engagement devices

1978-03-03

1980-11-18

Watson, Robert C.

Implements or apparatus for applying pushing or pulling force

Step-by-step traveling bar

Pawl actuated

B66F 104

Patent

active

042341639

ABSTRACT:
The device is attached to one end of a driving ram located on a mining machine, and comprises a locking ram operable independently of the driving ram. The locking ram is used to force an abutment into locking engagement with an abutment portion in the track on which the machine runs. The device may also include a stop and a guide to ensure that the abutment and abutment portion remain engaged until the locking ram is used to force them out of engagement.

REFERENCES:
patent: 3435621 (1969-04-01), Johnson
patent: 3449910 (1969-06-01), Reynolds
patent: 3635440 (1972-01-01), Van Gompel
patent: 3821934 (1974-07-01), Maeda
patent: 3832945 (1974-09-01), Muto et al.
patent: 3870279 (1975-03-01), Century

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