US585222A - Elevator-guide - Google Patents

Description

(No Model W. A. MQCOOL. ELEVATOR GUIDE.

No. 585,222. Patented June 29,1897.

Y Norms PETERS co; momumo wnsumflcm a c UNITED STATES ATENT FFIQE.

WILLIAM A. MCCOOL, OF BEAVER FALLS, PENNSYLVANIA.

ELEVATOR-GUIDE.

SPECIFICATION forming part of Letters Patent No. 585,222, dated June 29, 1897.

Application filed November 14, 1896. Serial No. 612,058. (No model.)

To aZZ whom, it may concern:

Be it known that I, WILLIAM A. McCooL, a citizen of the United States, residing at Beaver Falls, in the county of Beaver and State of Pennsylvania, have invented certain new and useful Improvements in Elevator- Guides; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the letters of reference marked thereou,which form apart of this specification.

Figure 1 is a partial view of an elevator conventionally indicated,,a sufficient portion being shown to illustrate the manner of applying my improvements. Fig. 2 is a perspective of a portion of one of the vertical guides. Fig. 3 is a perspective showing the back plate and the guide-plate of the guide detached. Fig. 4: is a side elevation of a portion of the guide, with parts of the back plate broken away to illustrate the manner of inserting and fastening the tongues.

This invention relates toimprovements in the metallic guides which are used in connection with elevators and by which the latter are held in proper vertical lines as they are raised or lowered.

As is well known, the manufacture of these guides requires accuracy with respect to the alinement of the different parts, and also that these parts should be of strong, durable, and

' reliable material. Generally, heretofore, they have been made by employing sections of one form or another of T-bars, produced by rolling; but as the process of rolling cannot be relied on for absolute accuracy with respect to the necessary alinement of the parts the T-bars have to be subsequently dressed and finished in planing-machines, all of which makes them very expensive.

One of the purposes of the present invention is to provide a method for manufacturing these elevator guide-bars in such way that different parts can be attained with the greatest precision and the different sections can be joined together with firmness.

1 form the back plates or bars A and the outwardly-proj ectin g parts B in separate sections. They may be produced, initially, by following any preferred plan, either by rolling them as flat bars or by shaping them in any other suitable manner. Theback plates A are provided with a series of apertures or mortises a, which can be arranged in exact alinement. The guide-bars B are formed with laterally-projecting tongues b, which are adapted to be passed through the apertures a, this being done, preferably, by placin g a comparatively large number of flat bars together and so arranging them upon a planer or milling-machine that the cutters of the latter can rapidly remove from the edges of the bars sufficient metal to form recesses Z) and leave the tongues or projections. The guidebars B are then secured with great rigidity to the back plates by passing the tongues or projections 19 through the apertures a and riveting or upsetting the metal which extends through, as shown at Z) in Fig. 4:.

The sections can be secured together by forming each with tongues b at one end, preferably of a dovetail form, and corresponding grooves b at the other end. The back bars or plates A can be similarly joined by tongues a and grooves a The different sections can be joined to have the tongues and grooves on both the partsA and B lie in the same horizontal plane, or they can be so arranged as to break joints, if preferred, as shown in Fig. 2.

By making the parts in the way described and building up the elevator-guides therewith I provide means which are exceedingly strong and which shall have the different elements positioned with the greatest accuracy relative to each other.

hat I claim is 1. An elevator-guide formed of a series of steel back plates A, each formed with a series of apertures or mortises, a, in alinement, in combination with a series of guide-bars, B, each having a series of recesses, 19 out in one of its edges with intervening tongues, b, said the apertures, a, and each guide-bar, B, betongues being passed through said apertures, ing joined to those adjacent by one or more a, and riveted, substantially as set forth. tongues and grooves, substantially as set 2. The herein-described elevator-guide, it forth. 5 consisting of the combination of a series of In testimony whereof I affix my signature 15 back plates, A, each having apertures or morin presence of two Witnesses.

tises, a, and a series of guide-bars, B, each IVILLIAM A. MCCOOL. guide-bar having a series of recesses, 11*, cut Vitnesses: in one of its edges, and intervening tongues, HARRY IV. REEVES,

10 I), each tongue being passed through one of HUNTER ECKERT.

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