Title: Travel drive for a drawing engine of a one-rail track suspension railroad in mines

Abstract: A travel drive for a pulling engine of a single rail suspended railroad used in mines includes a pair of friction wheels and a pair of toothed wheels each of which is mounted on a common shaft with the respective friction wheels for joint rotation therewith about a vertical axis and for displacement along the common shaft between a retracted position in which the toothed wheel is accommodated in a protective chamber of the respective friction wheel, and a raised position in which the toothed wheel is capable of engaging an indented segment extending along the rail. A double-action cylinder-and-piston arrangement is so operatively connected to the respective toothed wheel as to be capable of raising and lowering the same.

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Inventors: Farkas, Laszlo (4713 Bockum-Hovel, DE, US)

Application Number: 817105
Filing Date: 1977-07-19
Publication_date: 1979-01-09
Assignee:
Primary Class(es): 105/29.1 74/405, 74/422, 104/163, 104/165
Other Classes:
US Patent Ref:
Other Refs: 31378445174114309922453751146289

Apr, 1916	DE2
Oct, 1927	DE2
Mar, 1969	DE
May, 1976	DE
Dec, 1881	FR

Primary Examiner: Oresky, Lawrence J.
Assistant Examiner:
Attorney: Striker; Michael J.