US1458172A - Locking link for chain belts - Google Patents

Description

June 12, 1923. 1,458,172

R. W. DULL LOCKING LINK FOR CHAIN BELTS Filed Sept. 2, 1920 To all whom it may Patented dune l2, 1923..

YMOND W. DULL,

OF CHICAGO, ILLINOIS, A CORPORATION OF llAdJldZ earnreic.

OF LA GRANGE, ILLINOIS, ASSIGNOR TO LINK BELT COMPANY,

ILLINOIS.

LOCKING: LINK FOB CHAIN BELTS.

Application filed September 2, 1920. Serial No.

concern:

Be it known that I, RAYMOND W. DULL, a citizen of the United States, residin at La Grange, in the county of Cook and tate of Illinois, have invented a certain new and useful Improvement in Looking Links for Chain Belts, of which the following is a sbpecification.

y invention relates to improvements in link belt chains and has amongst its ob ects to provide links for such chains which shall have vertical instead of horizontal side bars.

in interlocking relation.

Other objects and advantages will appear from the description. The invention is illustrated in one form in the accompanying drawings wherein: a

Figure 1 is a plan view of a channel bar from which the links are to be made;

Figure 2 is a, cross section on the line 2-2 of Figure 1;

Figure 3 is a plan view of a link blank with the scoring lines;

Figure 4 is a sectional link;

Figure 5 is a cross section on the line 5--5 of Figure 4;

Figure 6 is a sectional view of two links in the process of being interlocked;

Figure 7 is a similar view of a second position;

Figure view of the finished 8 is a. side elevation of three links Figure 9 is plan view of the finished link.

Like parts are indicated by the same letter in all the figures The channel car is composed of the fiat member A, and the side members A'A. Without referring to the process by which the operation is carried on, it may he well to say that of course, the blanks for the links could be made from such channel loar stock or from fiat stock turned up at the edges to form the channel and it is a matter of difi'erence when such edges are i turned up to form such channel.

As soon as the have been turned up, the link blank will be scored as indicated by the score lines B B in the corner of the channel and the transverse score line which connects them. This will facilitate the punching out of the hook and the cross bar and when such punching out takes place, the link will have a cross bar D the hook E and the vertical side bars E F. The

mouth G of the hook E is narrower than the width of the side bar F which will effectually prevent all relative lateral motion of any pair of links in any direction after the same have been interlocked. Because of this fact, the links will have to be disengaged in reverse of the operation by which they are interlocked if they are to be disassembled.

The proportions of the hook E and the pintle or cross bar D are such that in the process of slipping the cross bar into the tubular interior of the hook there is a snug fit so that normallya degree of pressure is required to force the cross bar onto the hook and to remove it therefrom. This is particularly illustrated in Figures 6 and 7.

By having vertical side bars, this fit may be very snug and close because pressure can he applied to such vertical side bars to engage or disengage the links without fear of such distortion as might easily occur were the side bars fiat as would be the case if the links were made from flat stock and not from channel bar stock.

As soon as the side bars are extended in a vertical direction, the scoring which is intended to make easy the punching out of the hook and cross bar, may be made by direct lines, the side lines extending up to the point where the bend begins, for since the side bars are vertical, there will be little if any tendency for the metal to tear at this point during the process of forming the hook and cross bar. 'lhe side bars are slightly spread toward their junction with the cross loar so as to widen the space between the side bars at this int to permit easy introduction to the hook? It will .be evident as above suggested. that the structure here shown could be greatly varied without departing from the spirit of my invention. What have shown is to be merely taken as a suggestion of the general idea.

I claim: 1. A chain belt comprising a plurality of separate links each having a cross bar at one end and a hook at the other with side bars slightly spread near the cross bar to give free access to the hook.

2. A chain belt comprising a plurality of separate links each having a cross bar at one end and a hook at the other with side bars slightly spread near the cross bar to give free access to the hook, said side bars vertically extended.

3. A chain belt comprising a plurality of separate links each having a cross bar at one end and an open hook at the other and adapted to be interlocked by the insertion of the cross bar through the hook opening, the parts formed so that pressure is required to force the cross bar through the hook openmg.

4. A chain belt comprising a plurality of separate links each having side bars located in planes perpendicular to the plane of the link, a cross bar at one end, and a hook at the other, the side bars being bent upwardly at each end Where they project in the hook and cross bar respectively.

5. A link for chain belts comprising vertical side bars upwardly curved at either and,

the side bars being connected at one end by a hook portionin the form of a split cylinder, the opposite ends of the side links being connected by a concave surfaced pint e.

6. An integral chain link comprising vertical side bars connected at one end by a substantially tubular hook and at the other end by a concave surfaced pintle.

7. An integral chain link comprising vertical side bars connected at one end by a substantially tubular hook and at the other end by a concave surfaced intle, the ends of the side bars being curved at each end in an are substantially concentric with the hook and the dpintle respectively.

Signe at Chica 0, county of Cook and State of Illinois, t is 27th day of August, 1920.

RAYMOND W. DULL.

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