US445453A - Ladder - Google Patents

Description

. No Model.) 1 G. E. NOWLAND. LADDER.

(yewyelf l/g Patented Jan. 27,1891.

UNITED STATES PATENT Orricn.

GEORGE E. NOWVLAND, OF N El/V BOSTON, MICHIGAN.

LADDER.

SPECIFICATION forming part of Letters Patent No. 445,453, dated January 27, 1891.

Application filed November 6, 1890. Serial No. 370,459. (No model.)

To aid whom it may concern:

Be it known that I, GEORGE E. NowLAND, a citizen of the United States of America, re siding at New Bostomin the countyof \Vayne and State of Michigamhave in vented certain new and useful Improvements in Ladders; and I do hereby 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 letters of reference marked thereon, which form a part of this specification.

My invention relates to improvements in sectional ladders.

The objectof the invention is to provide a ladder which is so constructed that the parts can be connected together to form along ladder or folded so as to make a stepJadderan platformsupport; and it consists in the construction and combination of theparts, as will be hereinafter fully set forth, and particularly pointed out in the claims.

In the accompanying drawings, forming part of this specification, Figure l is a perspective view of a ladder constructed in accordance with myinventiomthe sections being connected to form an ordinary ladder. Fig. 2 is a side view showing two sections arranged to form a stop-ladder and platform-support. Fig. 3 is a plan view of the platform. Fig. at is a plan view of the under side of the platform shown in Fig. 3. Fig. 5 is a detail view of the lock for securing the first and second ladder-sections together.

A, B, and 0 refer to the different laddersections,the upper sections, or B and 0, being made up of parallel side pieces I) b and c c, to which the rungs are secured in the usual man ner. The side pieces a a of the lowerladdersection A diverge at their lower ends so as to give a wider base. The upper ends of the side pieces 0. and the lower ends of the side pieces Z) of the sections A and B are beveled or cut at an angle, as shown, and on opposite sides of saidladdersections are seen red plates e and e, which overlap the ends of the sections, as shown. These sections are further secured to each other by side bars D D, at: tached to the side pieces of the sections by pivot bolts f f, and centrally these re-enforcing bars D have pivotally attached thereto stirrups g, which embrace the overlapping plates of the sections and hold the same on a line with each other. To the upper end of the section B and ends of the succeeding sections are secured angle-irons h, the projecting ends thereof being adapted to engage the rung of the adjacent section to form the rigid con- 0 nectiou, as shown. By providing the sections B and O with such angle-irons thesaid sections can be detachably secured in place.

E refers to a platform or board, which is of suitable length, the width corresponding with the distance between the side pieces of the ladder-sections A and B, and said board or platform is provided on its upper surface near each corner with angle-irons t 2', the projecting ends of which are adapted to lap the side pieces of the ladder-sections when positioned, as shown in Fig. 2. The under side of this board has a cleat or brace 7i rigidly secured thereto, which carries turn-buttons Z Z, i11- tended to engage the upper rungs of the sections to retain the board in place. The plat form constructed as described, when used in connection with the ladder-sections and brace D, will present a rigid structure, which can be used as a step-ladder.

A combination-ladder constructed as hereinbefore described is extremely simple, can be cheaply manufactured, easilymanipulated, and when notin use folded to occupy but little space.

The pivoted stirrups are arranged to swing downward when the ladder is in use, thereby obviating the employment of catches or fastening devices.

I am aware that prior to my invention it has been proposed to provide a folding ladder with means whereby the sections can be held one upon the other, the two lower sections being adapted to be arranged to support. a platform, and I do not claim such construction, broadly, as my invention.

I claim 1. The combination, in a ladder, of the sections A B, side bars D, pivotally attached thereto and carrying stirrups which embrace too the ends of the sections, substantially as set forth.

2. The combination, in a ladder, of the sections A B, having plates e and e secured thereto, bars D, connecting said sections and carrying stirrups the projecting ends of which embrace the plates 6 and e, substantially as Set forth.

3. In a ladder, the combination of the sections A and B, plates 6 and e, rigidly secured to the ends of said sections to overlap the same, side bars D D, bolted to the sides of the sections near the ends thereof and carrying stirrups g, the projecting ends of which embrace the plates e and e, the parts being organized subs antially as set forth.

4. The combination, with the ladder-sections connected to each other by bars D D, of a platform E, having angle-irons i, which are adapted to embrace theside pieces of said ladder-sections, said platform carrying on its GEORGE E. NOWVLAND.

\Vitnesses:

W. 1-1. HEYWOOD, L. H. HEYXVOOD;

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