US1412855A - Door-operating mechanism - Google Patents

Description

P. R. FORMAN.

DOOR OPERATING MECHANISM.

APPLICATION FILED JUNE 16, 1911.

1,412,855 Patented Apr. 18, 11922.

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Specification of Letters Patent.

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Application filed June 16, 1917. Serial No. 175,106.

To all whom it may concern:

Be it known that 1, Peers R. FORMAN, a citizen of: the United States, residing at (.hicago, in the county of Cook, State of Illinois, have made a certain new and useful Invention in. Door-Operating Mechanism, of which the following is a specification.

This invention relates to door operating mechanism, and particularly to that class of same which is employed in the passenger vehicle art.

The object of the invention is to provide a door operating mechanism which is simple in construction, efficient in operation, economical to manufacture, quickly and readily installed. and which requires little or no attention in the maintenance thereof. The further objects of the invention will appear more fully hereinafter. 7 I

The invention consists substantially in the construction, combination, location, and relative arrangement of parts, all as will be more fully hereinafter set forth, as shown by the accompanying drawings, and finally pointed out in the appended claims.

Referring to the drawings 2-- Fig. 1 is a top plan view of the rear end. of a vehicle showing a door operating mechanism. embodying my invention.

Fig. 2 is a view partly in section and in elevation of the door operating mechanism employed in accordance with my invention.

Fig. 3 is a fragmentary view in side elevation of the door of a passenger vehicle op erated by a door operating mechanism emboi'lying my invention.

The same part is designated by the same reference numeral wherever it occurs throughout the seveal views.

It is the present practice, and particularly referring to the end door operating mechanism employed in the present subway system of New York city, to open and close the doors by means of an overhead actuating arm controlled from the end of the car, which arm is pivotally mounted in a sliding support. It is among the special purposes of my present invention to obviate the necessity of employing a sliding support for the pivotally mounted door actuating arm. It is obvious that where an arm is pivotally mounted. due to the path of travel of the end thereof being circular, or in a curved direction, that to prevent the end of the arm which is secured to the door from breakin through the door, or at least wa ping the same, it is necessary to provide a slide for the pivoted end of the arm. In accordance with my invention 1 oviate the necessity of employing the sliding pivot as it is termed.

is the drawings 1 designates the car body provided with a sliding door 2. Perma nently and rigidly secured to an overhead beam oi the car body is a bracket 4: which A ivotally carries therein one end of the door actuating arm 5. The other end of the said door actuating arm 5 being pivotally connected to a link 6. which link 6 is in turn connected pivotally to the door 2. Any desired means maybe employedfor actuating the arm The means now employed being sutiicient for that purpose, and I show one means comprising an actuating handle 7, mounted on a sleeve 8 to the top of which sleeve is secured an arm 9 to which is pivotally secured a link 10, which link 10 is pivotally secured to the door actuating arm 5%, that upon the locking of the handle 7 in one direction or the other the door 2 will be opened or closed as the case may be. At the point where the link 6 is connected to the door 2 I cut through the door so that when the arm 5 starts its circular movement about its pivot 12 the end of the arm 5 and the tree end of the link 6 may project through the slot l3 made thereby. Thus it will be seen that by allmving the free movement of the end of the arm 5 which is se cured to the door 2 I obviate the necessity of employing a sliding pivot.

As the strains of operation of the door are imposed upon the arm 5. and as the weight of the arm is supported. wholly by the bracket 4, l design the bracket 4: with a yoke shai ied support l4; forming part of the pivot connection between arm 5 and the yoke l, whi ch serves to support the arm 5 and take up the strains imposed thereon.

Having now set forth the objects and nature of my invention. and having shown and described a specific structure embodying the features thereof, what I claim as new and useful, and of my own invention, and desire to secure by Letters Patent, is

.1. The combination with a frame, of a door slidably carried in said frame, said door being provided with an opening therethrough. a door operating arm pivotally connected at one end to a link, said link being rirotally Connected to said door to extend through the opening therein, said arm extending in a plane at substantially right angles to the plane of said door and secured at its opposite end to said frame for solely pivotal movement relative thereto, aind means for actuating said arm.

2. The combination With a frame, of a door carried in said frame, said door being provided With an opening therethrough, a door operating arm, a link pivotally connected atone end to one end of said arm, and pivotally connected at the other end to said door to extend through the opening in said door'upon actuation of the arm, said arm and link extending in a plane angularly disposed to the plane of said door, and means for connecting the other end of said arm to said frame to allow pivotal movement of said arm relative to said frame, but to prevent sliding movement therebetWeen, and

means for 'pivotally moving said arm relative to said frame.

3. The combination with a support, of a door, a bracket rigidly carried by the top of said support, an arm pivotally carried; at one end by said bracket for solely pivotal movement relative thereto and provided at its other end-With a link, said arm and link extending in a plane at right angles to the plane of said door, said door being cut away throughout its thickness, and said link being pivotally connected to said door at its 7 arm, said arm and link extending in a plane i at right angles to the plane of said door, and

means for actuating said arm.

In testimony whereof I have hereunto set my'hand on this 13th day of June, A. D.

PARIS R. FORMAN.

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