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Elevator rail system
| Details |
Inventors: Atkey, Richard E.; Gilliland, Oscar E.;
Assignee: Dover Corporation (New York, NY)
Primary Examiner: Skaggs; H. Grant
Assistant Examiner: Noland; Kenneth
Attorney, Agent or Firm: Brumbaugh, Graves, Donohue & Raymond
A rail system for elevators includes a plurality of omega-shaped rail sections. Adjacent sections are spliced together by a common tube, projecting into the adjoining hollow sections of rail, which is secured by clamps. The rails are mounted to a building structure by brackets that have a circular portion, engaging the interior space of the rail sections, and projecting portion that can be mounted to the building structure. |
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DETAILED DESCRIPTION The present invention is a rail system for elevators which is far less expensive to produce, easier to install and align properly, which has little interfering structure at the splices between rail sections, and which includes a novel bracket mounting system.
In a preferrred structure of the invention, the rail section is omega-shaped in cross-section with one portion being round, and with two protruding flat sections.
The round portion defines an internal space which is used both for splicing sections together and for mounting the rails in the elevator hatchway.
Preferably, the splices between sections include a tubular member which projects into the circular portion of each of the adjoining rail sections.
One or more clamps are applied to the ends of the flat projections which thereby retain the tubular member securely in place and, in so doing, securely hold the adjacent rail sections relative to one another.
In the preferred mounting system, a bracket member has a circular portion which fits snugly into the circular portion of the omega rail, and projects out through the elongated, open-slot side of the omega rail.
The external section of the bracket contains a plurality of slots that allow adjustable bolting to a building structure or other means provided.
This bracket is merely inserted into the omega rail section, bolted to the means provided and secured, if desired, with a clamp.
An alternative bracket arrangement includes a "T" portion, with a key slot hole in the leg of the "T", and a disc with a tapered projection at a center that fits into the hole in the T-bracket.
When assembled, this latter embodiment has substantially the same structure as the first mentioned bracket arrangement.
However, this embodiment has an additional advantage in installation, as described below.
A rail system according to the invention provides guide surfaces at equivalent angles to the T shaped rail presently in use in the industry.
However, since the guide surface of the present rail system is circular, twisting of the rail is unimportant to alignment
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