US2320186A - Cover for elevator door hanger mechanism - Google Patents

Description

May 25, 1943. H, w. LARsON COVER FOR ELEVTQR DOOR HANGER MECHANISM Afro/eA/Evf.

H. w` LARsoN COVER IFOR ELEVATOR DOOR HANGER MECHANISM May 25, 1943.

FiledApril s, 1941 zsheets-sneet/-z .m1/ENT fe m ,4 rra HNE/5.

Patented May 25, 1943 COVER FOR ELEVATOR DOOR HAN GER Y MECHANISM Y VvHarry William Larson, Jamestown, N. Y., assigner Y to Art Metal Construction Company, Jamestown, V`N. Y.

Y Application Apro s, 1941, serial No. stsa l 1 Claim. l (Cl. lli- 95) This Yinvention relates to improvements in cover means for the hanger mechanisms of elevator doors. I Y y The hanger mechanismsor lmeans for slidably mounting'the doors of elevator shaft doorways are usually housed in pockets or chambers provided in the inner sides of the front walls or structures Yof the elevator shafts above the door openings. VAtpresent most manufacturers of elevator doorsfprovide the containing pockets or chambersl for the door-hangers and their tracks with covers or closure means, which may consist of a large, single-piece, metal cover or-separate cover sections, that are hinged or made removable in order to afford access to the hanger mechanisms for servicing the same. These covers as heretofore constructed, Whether in a single piece or in sections, unless special care is exercised to tightly secure them in place, are apt to ybe or become loose so that they are caused to rattle and make objectionable noise, due to the suction or vibration produced by the travel of the elevator cab in thefshaft. narily done only at infrequent intervals of several months apart, and thecovers become dirty and greasy. Since provision'must be madel for disposal ofthe dirtyremovable lcovers during the time that the servicing work, is being done, itis not desirableffo-r workmen tovperform the servie-- ing operations from within Vthe elevator cab. This, and the`difliculty of opening or handling and replacing the covers, 'requires the work to be done by one or more workmen on thel top of the cab, and in the case of the large, single-piece covers, which sometimes are over five feet long, the services of two men on top of the cab are required to remove andreplace the covers when servicing the hanger mechanisms. It is diflicult to properly replace the long covers and there is always the possibility that one may be improperly replaced or insecurely fastened, which would result in a loose condition, with consequent objectionable noise.

The objects of this invention are to provide a practical and desirable cover for the elevator door hanger mechanisms of improved, novel construction, which will overcome these objections and enable ready and easy access to the Ymechanism for servicing purposes; which will insure a tight closure of the cover and prevent objectionable noise; and which makes it possible for the servicing operations to be performed easily and conveniently by a person working inside of the elevator cab.`

Further objects and advantages of the inven- The servicing is ordiJ tion will appear from the following specification of the preferred embodiment of the invention, shown in the accompanying drawings, and thel novel features'oil the invention are set forth in the appended claim.

In said drawings:

Fig. 1 is a fragmentary elevation of the front wall or structure of an elevator shaft as seen from inside the shaft, provided with cover means embodying my invention, for the door hanger mechanism.

Fig. 2 is a sectional plan View thereof on line 2 2, Fig. 1, this figure, like Fig. 1, showing the cover means applied to an elevator door unit of the two speed or Vdifferentially travelling double door type. 1

Figs. 3 and 4 are similar sectional plan views, but illustratingY applications of the invention to elevator door units of the central opening and single slide types respectively.

Fig. 5 is a transverse, sectional elevation,.en larged, on line 5'-5, Fig.' l. Y

Figs. 6 and 'l'are sectional elevations of th cover meansfon a still larger scale, on lines 6 6 and '1 1 respectively, Fig. 1.

f Fig. 8 'is a sectional plan View on line 8 8, Fig. 6',- showing one of the anti-rattling springs for the cover door.

' Referring first to the Figs. l and 2 embodiment of the invention: Y

f I0 indicates, in general, the front wall, frame or structure of elevator shaft, II the door opening therethrough, and I2 and I3 the two elevator doors adapted to slide at different speeds in one direction for opening the doors and in the opposite direction for closing them. The elevator shaft may be of any Vusual-or suitable construction which provides the necessary elevator door opening and pocket or chamber above the door opening for the hanger mechanism for the doors. As illustrated in the drawings, the front of the elevator shaft structure includes upright jamb or side members I4 and I5 at opposite sides of the door opening I I, an upright supporting member I6 spaced to one side of the door opening, and a horizontal head beam or lintel member II extending horizontally above the door opening and secured to the upright members I4, I5 and I 6. The head beam or member I'I shown, which is of a form commonly employed for the purpose, has upright and horizontal web portions forming a pocket or space for the door hangers and their supporting track (not shown) a forwardly projecting, horizontal lower flange I8 over the door opening II, and a ange I9 which extends upwardly from the rear edge of the horizontal web portion of the beam I1 and to which the usual facing plate of the shaft is connected.

The cover which closes the rear side of the pocket or space 2|, in which the hanger mechanism is locatedy and covers or projects the hanger mechanism, comprises a horizontally elongated, vertical metal plate 22 which extends horizontally from one to the other of the upright members I4 and I6 of the shaft structure, and is provided with an opening 23 therethrough affording access to the hanger mechanism and adapted to be closed by a sliding door or plate 24. The cover plate 22 is preferably secured in place by tongues or clips at its ends projecting into and releasably engaging the lower edges of slots 26 in the structural upright members I4 and I6, and screws 21 which fasten the upper edge of the plate to the top flange I9 of the head beam I'I.

This cover plate is thus stationarily secured in position but can be easily removed if occasion demands by removing the screws 2l and disengaging the clips 25 from the slots 26. However, the cover plate 22 does not havel to be removed for ordinary servicing operations on the door hanger mechanism and ordinarily remains secured in place, such ordinary servicing being performed through the opening 23 by simply sliding back the door plate 24 to uncover the opening. The door plate 24 is mounted on the cover plate 22 to slide horizontally thereon in suitable guides preferably formed by channel members 28 welded or otherwise suitably fixed to the front or inner side of the cover plate 22 above and below the opening 23 so that the door plate 24 can be slid horizontally from a position in which it covers the opening to a side position in which it uncovers the opening to aii'ord access therethrough to the hanger mechanism in the pocket 2|.

In order to prevent looseness and rattling of the door plate 24, spring means are provided which press the door plate 24 yieldingly against its guides. Spring tongues or strips are shown for this purpose, each riveted at one end to the door plate, at the top and bottom edge portions thereof, with the spring tongues arranged 1 to slide and bear yieldingly against the outer flanges of the guide channels 28. The free portion of each spring tongue is preferably of cgee or S curvature, having convexed portions adapted to bear against both the face of the door plate and the opposed flange of the guide channel 28 so as to effectually press the door plate yieldingly against the other nanges of the guide channels. Thus, looseness and rattling of the door with consequent noise, due to the suction or vibration caused by the movement of the elevator cab, is prevented.- A socket 3| is shown in the door plate in which a tool can be inserted to serve as a handle for opening and closing the door.

The door opening 23 of the cover plate should, of course, be of such size and so located as to afford most convenient and adequate access to the hanger mechanism for servicing purposes. In the above described embodiment which refers to an installation for the two speed doors, the cover opening 23 can be located, as shown, over the inner of the two doors only, since with this type of door, both door hanger mechanisms can be brought opposite the opening. Y

In the single door embodiment illustrated in Fig- 4, the construction may be like that described, except that the cover opening 23a is made practically the full width of the elevator door and is located above the door when it is closed. This construction requires moreroom at one side of the cover opening to enable the, necessary movement of the longer cover door to completely uncover the opening. Y

In the center opening elevator doorembodiment shown in Fig. 3, the construction-diners from the others principally in that thev cover opening 23h extends for approximately the full zontally above the elevator door, closure means for said chamber comprising a horizontally elongated cover secured in place over and covering that side of said chamber which faces toward the elevator cab, said cover having an opening therethrough to afford access to the hanger mechanism within said chamber, horizontal guides onl said cover adjacent the top and bottom edges of said opening and extending beyond an endV of the opening a distance equal to a substantial portion of the length of said opening, a door plate slidably supported by said guides to slide horizontally to and from a closed position inwhich it covers said opening to an open position at one side of said opening, and spring tongues secured to said door plate and each slidably bearing against one of said guides for yieldingly pressing the door plate against said guides to prevent rattling of the door plate.

HARRY WILLIAM LARSON.

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