System for supporting overhead trolley rail
AssigneeVoy Manufacturing Co.
InventorNeal W. Densmore
Life of this patent
Estimating the term…
Abstract
A system for supporting an overhead trolley rail which requires a minimum of simple parts and wherein the trolley rail is supported from washer-like elements each having a centrally-disposed opening therein and at least one curved portion depending downwardly from the element. A bolt extends across the curved portion and supports two L-shaped keepers each having one leg through which its associated bolt extends and a second leg which underlies a flange on a trolley rail, which in most cases comprises an I-beam. A single roof bolt extends through the centrally-disposed opening of the washer-like element and into a mine roof or the like, the single roof bolt comprising the sole support for the washer-like element.
Claims10
A system for supporting an overhead trolley rail from a mine roof or the like, comprising a washer-like element having a centrally-disposed opening therein, at least one curved portion depending downwardly from the washer-like element, a bolt extending across said curved portion and supported thereby, two L-shaped keepers at the ends of said bolt each having one leg through which its associated bolt extends and a second leg which underlies a flange on a trolley rail, and a single roof bolt extending through said centrally-disposed opening and into a mine roof or the like, said single roof bolt comprising the only support for said washer-like element.
A system for supporting an overhead trolley rail from a mine roof or the like comprising a washer-like member secured to the mine roof and having at least one curved portion depending downwardly from the washer-like member, keeper means supportingly engageable with the rail,
- securing means cooperable with said keeper means and said curved portion for supporting said rail on the washer-like member,
- said keeper means having a pair of generally L-shaped keepers for each said curved portion,
- each said keeper having an axial extent oriented generally parallel to said rail,
- each said keeper having a leg in underlying supporting relationship with respect to a portion of said rail,
- said securing means including at least one elongated bolt oriented generally transversely with respect to said rail and securing two said keepers to a said curved portion,
- and
- said securing means cooperates with said curved portion to permit the rail to assume an angle with respect to the plane of said washer-like member.
Dependencies are inferred from the claim text.