US2650749A - Ladder - Google Patents

Description

Sept- 1, 1953 R. o. BALOGH 2,650,749

LADDER Filed March 2, 1950 Patented Sept. 1, 1953 LADDER Roy O. Balogh, Cleveland, Ohio, assignor, by mesne assignments, to McCabe-Powers Auto Body Co., St. Louis, Mo., a corporation of Missouri Application March 2, 1950, Serial No. 147,274

2 Claims.

This invention relates to a ladder and is concerned particularly with the rungs and the means for securing them to the rails of the ladder. Objects of the invention are to provide such members in a form which shall be very strong and stable in use while involving only a low cost in manufacture, and which may be readily replaced from time to time if they become distorted.

My invention is illustrated in the drawing hereof and is hereinafter more fully explained and the essential novel features set out in the claims.

In the drawings, Fig. 1 is a fragmentary View of the ladder showing particularly the rungs and their attachment to the longitudinal rails; Fig. 2 is an enlarged view of one of the rung attachments, being in the nature of a fragmentary elevation indicated by the line 2 2 on Fig. 3; Fig. 3 is an axial section through a portion of a rung, showing its mounting, the position being indicated by the line 3-3 on Fig. 2; and Fig. 4 is a view of a portion of one of the rungs and of one of its mountings, as indicated by the line 4 4 on Fig. 3 looking upwardly.

In the drawings, l indicates one of the two rails or longitudinal bars of my ladder carrying suitable rungs 30. These rungs are metal tubes, the end portions of which occupy openings in the rails. On the outer side of the ladder I provide stopping plates 3l which are abutted by the ends of the rungs. The rungs carry diametric pins 35 which when the rungs are in place abut the inner surface of the rails. Suitable collars 36 surround the rungs on the inner face of the rails and overhang the diametric pins 35 and abut the inner face of the rails, as shown in Fig. 3. The collars are formed as shown in Figs. 3 and 4 and have cylindrical portions snugly surrounding the rungs, and recessed intermediate portions to house the ends of the pins 35, and finally flat flanged portions to engage the rail face. Suitable cross bolts 3l extend through the outer plates through the rails and through the collars 36 and carry nuts 39 on their ends, securing all of the parts in place.

The provision of the removable collars 33 and the rungs carrying the cross pins 35 retained in place by those collars, provides very ready means whereby a bent or distorted rung may be replaced by a fresh rung. The removal of the nuts 39 allows the removal of the collar 36, thus freeing the diametric pin 35 so that it may be driven out of the rung. The freed bolts 31 may also be withdrawn from the rail, which frees the plate 3|. Accordingly, any rung may be moved outwardly through the rail its end portion normally occupies.

It will be seen that by my arrangement of rungs and their mounting means, I have provided a structure adapted for economic construction and ready assemblage. The adjustable anchorages for the ends of the tie rods enabley the rods to be given the desired tension in their seats. They may, however, be readily removed whenever desired, and hence any distortion of the parts from use may be easily remedied.

I claim:

l. In a ladder, a rail having a plurality of spaced apertures extending therethrough, a rung mounted at its end in and extending lengthwise through each of said apertures, said rung having a pin extending diametrally therethrough and projecting therefrom at its opposite ends for engagement against the inwardly presented surface of the rail, a collar disposed concentrically upon the end of the rung and having a diametrally enlarged flat peripheral ange for engagement against the inner surface of the rail, said collar being provided, in the region of its juncture with its flange, with diametrally opposed radially extending recesses for iitting snugly around the projecting end of the pin, and means for drawing the collar tightly against the rail, whereby to secure the pin within the recesses and hold it between the inner portions of the recesses and the inner face of the rail so that the rung will be held securely and rigidly against movement axially inwardly or outwardly through the aperture in which its end is seated or rotationally with respect to said aperture.

2. A ladder comprising a pair of spaced side rails each having a plurality of spaced apertures, the apertures in one rail being respectively paired and axially aligned with a corresponding aperture in the other rail, a ladder-rung mounted at its ends in and extending longitudinally between each set of paired apertures, said rung extending through the aperture and being flush upon its outer end faces with the outwardly presented faces of the rails, plates mounted iiushwise upon the outer face of the rails over the apertures and in endwise abutment against the end faces of the rung, each of said rungs having a pin extending diametrally therethrough and projecting therefrom adjacent each of its opposite ends, each of said pins being respectively disposed in engagement with the inner face of the rail to which it is proximate, collars disposed concentrically around the rungs and abutting the inner faces of the rails, said collars being deformed inwardly away from the rail-face for snugly housing the ends of the pins, and means for holding the plates and collars together against the respective faces of the rails.

ROY O. BALOGH.

References Cited in the le of this patent UNITED STATES PATENTS Number Name Date 965,712 Holdridge July 26, 1910 2,319,254 Neunherz May 18, 1943 FOREIGN PATENTS Number Country Date 768,455 France May 14, 1934

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