US505515A - George tappan francis - Google Patents

Description

I (No Modal.)

G. T. FRANCIS; GUIDE POST CLAMP;

UNITED STATES PATENT OFFICE.

GEORGE TAPPAN FRANCIS, OF CHICAGO, ILLINOIS, ASSIGNOR OF ONE- I'IALF TO THE STANDARD ELEVATOR COMPANY, OF SAME PLACE.

GUIDE-POST CLAMP.

SPECIFICATION forming part of Letters Patent No. 505,515, dated September 26,1893.

Application filed March 2'7, 18913.

To all whom it may concern:

Be it known that I, GEORGE TAPPAN FRAN- Cls,a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented new and useful Improvements in Guide-Post-Clam pin g Devices,

of which the following is a specification.

This invention relates to guide posts for elevators. Its object is to simplify and render more economical the erection of guide posts in various locations. I

The invention consists substantially in the construction set forth in the succeeding specification, illustrated in the accompanying drawings, and more particularly pointed out in the claims.

Like letters of reference are used to designate similar parts in the several figures of the drawings, in Which- Figure 1, is a side elevation of two guide posts in position above and below an I-beam. Fig. 2, is an edge elevation of the same. Fig. 3, is a view of one end of a guide post embodying my invention and Fig. 4, is a view of the other end of such guide post partly in cross section and clamped to anI-beam.

Heretofore guide posts most commonly have been secured to the I-beams in the building by drilling holes and fastening such post and I-beam together by bolts. Such a construction was quite expensive and very tedious, and more recently this plan of construction has been abandoned, by at least one manufacturer of elevators, to wit., the Standard Elevator Company, of Chicago, the assignee of the present application, and in lieu thereof the guide-posts have been cast with lugs or had lugs permanently fastened thereto near the ends, and provided with clamping bolts which latter were adapted. to hook over the flanges of the I-beams, substantially as shown in the accompanying drawings.

In practice I have found that the lengths of guide posts required for different buildings vary considerably, and therefore that a manufacturer would be obliged to keep on hand a large number of posts of different lengths and this necessity has been found burden-- some and inconvenient. I have also found that when the lugs were cast with the guide- Serial No. 67,891. (No model.)

posts itsome times happened that such posts shrunk somewhat unevenly, so that while the lug on one post might have its bearing surface flush with the end of the post, on another post such lug might not be flush with the end of the post, and therefore in use there would be an undue strain upon the lug and clamp bolts.

The object of the present invention is to avoid the necessity of carrying a number of different lengths of stock posts and to simplify and render more economical the erection ofthe guide posts. The manner in which this is accomplished will now be described. I propose to keep on hand posts of an abnormal length, and cast the same with lugs for clamping bolts, only at one end, which end is illustrated in the accompanying drawings in Fig. 4, and on the upper post in Figs. 1 and 2. The other ends of these same posts are to be cast without lugs, or perfectly plain as is shown on the lower posts in Figs. 1 and 2 of the drawings. I prefer to face such. ends of the posts, which in the present instance are shown as the upper ends, perfectly fiat, so that they will be adapted to have attached to them lugs for clamping bolts, as will be hereinafter described, and these flat surfaces I prefer to have extend in the direction of the length of the post ten inches more or less. I

have-designated the end of the post having the lug cast thereon or permanently affixed thereto by the letter B, and the end of the post cast plain with no lug, by the letter B. I have designated the lug cast to the post by the letter C and the detachable lug by the letter C; and havedesignated the clamping bolts or hooks by the letters a, a. The I-beam is designated by the letter A, wherever it is shown in the drawings. The detachable lug for the clamping bolts or hooks may be secured to the plain surface of the guide post near one end thereof by any suitable fastening device, but I have shown in the accompanying drawings, and found in practice that a bolt b with a head on one end and a nut upon the other is well adapted for this purpose, and in such case the lug C should have an elongated slot or hole formed for the passage of the bolt so that the lug may be located or placed upon the end of the post in such manner that its lower surface will be flush with the end of the post and thus form a firm bearing upon the head of the I-beam, and relieve the fastening device or the clamping hooks from undue strain. The elongated slots in the lugs are designated in the drawingsby the letter 0.

It is manifest from the above description that if the manufacturer is supplied with posts of a length as great as is apt to be ever required in any ordinary building, such posts may be readily adapted for convenient erection in any of such buildings even though the stories thereof may somewhat vary in distance apart, because after taking the measure of the post required for any particular building, all of the posts to be used therein may be readilysawed off at their plain ends, where they have no lugs, until the requisite length is secured and then the detachable lugs may be secured to such ends in the manner hereinbefore set forth, and the post will be ready for erection without further alteration.

In consequence of the construction I have just described, the manufacturer will not be required to keep a large number of stock posts of various lengths. Figs. 1 and 2 of the drawings illustrate the manner in which the posts are applied to the I-beam when one end of the post has a permanent lug fixed thereto, and the other end has a removable lug. In these figures the letter B represents the end of the post which has the lug for the clamping post cast with it, or permanently fixed to it, and the letter B designates the end of the post which is cast plain without lugs; and which as shown, has the lug attached to it after the post has been sawed to the proper length for the situation in which it is to be used.

In the drawings the lower end of one post is'shown and the upper end of the other; but it will be understood that each post is formed alike.

Thus far each post has been described as having a permanent lug and a removable lug each provided with clamping devices, but it will be manifest that although this is the preferable construction, yet both ends of each post might be provided with removable lugs.

It is obvious that many other variations may be made in the details of the present invention without departing from the principle thereof, and I, therefore, do not wish to be understood as confining myself to the exact construction shown anddescribed.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

l. A guide post for elevators provided at one end with a clamping device permanently secured thereto, and at the other end with a clamping device removably secured thereto, whereby the guide post may be readily clamped to an eye-beam and adjusted as to length; substantially as and for the purpose set forth.

2. A guide post for elevators having at one end a permanent lug having adjustable bolts secured thereto, and at its other end a removable lug having similar bolts; substantially as and for the purpose set forth.

3. In a guide post for elevators the combi-' nation of the main body of the post, having the side faces of one end flat, such faces extending some little distance back of the end of such post, with lugs containing clamping hooks or bolts and. mechanism for securing the same to such main body; substantially as and for the purpose set forth.

4. In a guide post for elevators the combination of the main body of the post having the sides of one end faced so as to afford a fiat surface which extends some little distance back of the end thereof, with lugs containing clamping bolts or hooks and a bolt for securing them to the main body of the guide post; substantially as and for the purpose set forth.

5. In a guide post for'elevators the combination of the main body of the post with lugs containing clamping hooks or bolts secured to such main body, and adjustable thereonin the direction of the length of such body of the post; substantially as and for the purpose set forth.

6. In a guide post for elevators the combination of the main body of the post, having its sides near one end faced fiat, with lugs. containing clamping hooks or bolts and provided with elongated holes or apertures and a securing bolt passing through the lugs and the main body of the post whereby such lugs may be adj ustably secured to such main body of the post in reference to the length thereof; substantially as and for the purpose set forth.

GEORGE TAPPAN FRANCIS.

Witnesses:

N ELLIS HARRIS, J AS. LAWRENCE GERRY.

IOC

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