US1709279A - Elevator-door hanger - Google Patents

Description

April 16, 1929. T, OSINGA 1,709,279

ELEVATOR DOOR HANGER Filed Sept. 2 1928 /v 12. To? fjyoma J. OSJ/VGA Patented Apr. 16, 1929.

THOMAS J. OSmGA, OF CHICAGO, ILLINOIS.

ntnvn'ronnoon HANGER.

Application filed September 25, 1928. Serial No. 308,290.

My invention relates to means for suspending sliding doors, and more particularly to the means for balancing and lubricating the hangers which constitute the suspension means for elevator doors, and my main object is to provide a novelhanger which is permanently lubricated.

A further object of the invention 15 to dispose the hanger in a novel oil well, which retains the hi ricant in a confined state under all conditions. 7

A still further object of the invention is to provide a novel sliding support for the hanger which is always properly alined.

Another object of the invention is to incorporate in the novel hanger means to make allowance for slight deviations inthetravel of the door, so that the sliding act-ion of the door is not aifected by such deviations.

A final, but nevertheless important object of the invention is to construct the novel hanger with few and simple parts of'a rugged type, making the installation durable and the operation of the hanger eilicient.

With the above objects in view and any others that may suggest themselves from the specification and claims to follow, a better understanding of the invention may be gained by reference to the" accompanying drawing, in which v Figure 1 is a fragmental elevation of a typical elevator door installation, showing the novelhanger applied; and

Fig. 2 is an enlarged section on the line 2 2 of Figure 1.

In the design of modern elevator installations, provision is made to suspend the door from hangers which have a sliding motion and incorporate ball or roller hearings to reduce friction. While installations of this type are generally eflicient, it is difiicult to keep the sliding elements properly lubricated because of the exposed and complicated nature of the working parts. Dust settles in the latter and clogs what lubricant may be present, rendering the action of the door diff cult and requiring frequent cleaning and adjustment. Also, conventional installations are subject to looseness and faulty alinement on account of jars and deviations in the action of the door,causing much rattling and wear. I have endeavored to eliminate the above and other deficiencies found in the installations of the current type and to accomplish the objects outlined above to their fullest entent.

In carrying out the invention, specific reference to the drawing shows a typical beam 5 along which the door 6 is designed to o erate. The novel door hanger is comprised mainly of a pair of channel supports 7 spaced laterally and having their base portions 7* secured by a horizontal strap 8, making them rigid with relation to each other. As concerns the door 6, the same is supported from the bottom flange of each support 7 by a bolt 9, which is passed downwith its shank through an aperture 10 in the flange, receiv- 1ng a nut 11 immediately under the flange. The shank of the bolt extends downwardly to become screwed into the door 6 as indicated at 12, receiving a locking nut 18 above the door.

In conjunction with the hanger formed by the parts just described, in connection with the door, I use a novel receptacle 14. This receptacle is in the nature of a trough secured by bolts 15 or other means to the beam 5 and extends the length of the doors travel. The receptacle 1 1 receives on its bottom a longitudinal rail 16 having a head 17 of a substantially circular cross section. In connection with the head 17 of the rail 16, the top flange of each channel support 7 carries a depending arm 18 whose bottom is enlarged as indicated at 19 to be bored with a long"- tudinally-directed and tubular cavity 20, the latter opening downwardly. The cavity 20 is adapted to render the enlargement 19 of each arm 18 in sliding contact with the head 17 of the rail 16. This contact is eased by filling the trough 14 in the region of the sliding assembly with a quantity of oil or grease as indicated at 21. The mode of securing each arm 18 to the respective channel flange 7 is by a single medial bolt 22 directed from the channel into the arm, the latter, however, being flanged laterally indicated at 23 for more stability. The bolt 22 is plainly shouldered in the region of the flange 7, as indicated at 22, and is not tightly driven upon the same, allowing a slight amount of lateral freedom on the part of the flange.

The installation described is shielded from dust by a cover 24 extended from the beam 5 over the parts. This cover has one or more depending angle bars 25 which form stops for a depending continuation 26 of the cover, hinged to the latter at 27. This continuation may when closed be secured by bolts 28 to the access to the trough. Considered as a unit the novel hanger may be designated as composed of the channel supports '7, their strap connections 8, the depending arms 18, and the rail 16 of the trough 14. It will be seen that the action of the hanger will be a purely sliding one with a maximum amount of lubrication to take the place of the more or less complicated ball or roller bearing installations of current types. lVith the lubricant in the elongated trough 14 at a level to well include the sliding assembly, the lubrication of the latter may be considered as perfect and permanent in a general sense. The stability of the rail 16., coupled with the spacing of the arms 18. gives the hanger a true alinement without the use of associate or other minor parts which are apt to get outof order or require frequent attention. At the same time, the ball and socket relation of the head 17 of the rail 16 and the enlargements 19 of the arms 18 provide a relation similar to that of a ball or universal joint, so that the door may undergo variations in its travel, such as tromshocl; or rough handling, without at- "ecting or impairing the alinement of its sup port, this alinementprevailing againstall such shocks or variations. Further, Warping tendencies on the part of portions of thedoor will be absorbed at the site of the bolts 22, these serving in the nature of king-bolts.

Freedom at these points will relieve the arms 18 or" tendencies to twist and bind along the rail 16 as the door moves. It is significant that the trough 14 is high, and serves to retain the lubricant against splashing or spilling over in case the door is roughly handled. Also. the simple assembly of the arms 18 with the single rail 16 makes for easier access in installation as against complications in this sense when many parts must be carefully fitted, is the case with other installations. In conclusion, it will be evident that the benefits described are secured by an assembly of parts of ezitreme simplicity and rugged construc tion, making the-novel hanger a mechanism which requires little or no attention and may operate elticientlylor long periods.

' While l have illustrated and described the invention in the preferred form, it will be evident that the same 1s capable o'l many minor changes and refinements, and it is my intention to include such changes and rewntsas coming within the spirit and scope of the appended claims.

I claim 1. A suspension forelevator sliding doors comprising a support, a trough attached to the latter and. adapted to receive a lubricant,

a track in the trough and parallel .to the 7 course of the doors travel. and means to support" a door including a hanger suspending the door, said hanger being supported for travel on the track.

2. A suspension for elevator sliding doors comprising a support, a trough attached to the latter and adapted to receive a partial filling of lubricant,a track along the bottom of the trough and parallel to the course of the doors travel, and means to support a door including a hanger suspending the door, a portion of said hanger being submerged in the lubricant to receive a support by'the track for travel thereon.

3. A suspension for elevator doors com prising a fixed and elongated track having a crown of substantially circular cross-section, and means to support a door including a hanger suspending the door and formed with a socket conforming to and slidably engaging said crown.

4. A suspension for elevator doors comprising a fined and elongated track of a relatively narrow dimension, said track having a top crown of substantiallycircular and enlarged cross-section, a meansto support a door including hanger suspending the door and formed with a downward top bend, and a socket extended from the latter to rest upon and envelop the crown with freedom of angular and longitudinal sliding motions relative to the same. s w

5. A suspension for elevator sliding doors comprising a support, a trough attached to the latter and adapted to receive a lubricant, a track in the trough and parallel to the course of the doors travel, a h'anger'channel having a substantially horizontal course alongsidethe trough and with its flanges directed over and under the trough respectively, means to suspend the door from the lower flange, a track in the trough, an arm depending from the upper flange to receive a sliding support upon the track, and a bead-andsoclret joint formed at the union of the 'arm andthe track permitting transverse pivotal motion of the arm about the track.

6. A suspension for elevator sliding doors comprising a support, a trough attached to the latter and adapted'to receive a lubricant, a track in the trough and parallel to the course of the doors travel, a hanger channel having a substantially horizontal course alongside the trough and with its flanges di-' rected over and under the trough respectively, means to suspend the door from the lower flange, a track in the trou h, an arm depending from the upper flange to receive a sliding support upon the track, and a king-pin con neetion between the upper flange and the arm to permitthe flange to turn in a horizontal plane freely of the arm.

In testimony whereof I aflix my signature.

THOMAS OSINGA.

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