US455973A - Step-ladder - Google Patents

Description

(No Model.) 7 2Sheets-Sheet 1.

A. E. PARR 8: W. o. EDWARDS.

STEP LADDER.

No. 455,973. Patented July 14,1891.

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2 Sheets-Sh eet 2.

A. E. PARR & WQG. EDWARDS. STEP LADDER.

No. 455,973. Patented July 14, 1891,

(No Model.)

UNITED STATES PATENT OFFICE.

ALEXANDER E. PARR, OF HARKERS CORNERS, AND WILLIAM C. EDlVARDS,

OF PEORIA, ILLINOIS STEP-LADDER.

SPECIFICATION forming part of Letters Patent No. 455,973, dated July 14, 1891. Application filed December 13, 1890. Serial No. 374,573. (No model.)

To all whom it may concern/.1 shoulder and the main ladder being held Be it known that we, ALEXANDER E. PARR, somewhat from the ground by the foot-piece. of Harkers Corners, and WILLIAM 0. ED- By this construction the foot-piece is readily WARDS, of Peoria, both being citizens -of the adjustable to any uneven surface of the 55 United States, residing in the county of ground, and the main ladder is kept in its Peoria and State of Ill nois, have invented proper, position, the shoulder a moving along certain new and useful Improvements in Stepthe curved edge of the bar I) either to the Ladders; and we do hereby declare the 01- right or left, according to the inclination of lowing to be a full, clear, and exact descripthe ground-surface, and the bolt f forminga 60 tion of the invention,su'ch as will enable othloose pivotal connection and holding the ers skilled in the art to which it appertains to standard 0 to a central pointin the lower end make and use the same. of the ladder.

This invention relates to step-ladders; and To the platform Bare fastened three brackit consists in certain improvements in the ets or hangers m and 'n, in which two bars 1) 65 I 5 construction of the same, as hereinafter deare journaled or are pivotally connectedtherescribed and claimed. with, the central hangermreceiving one end In the accompanying drawings, Figure 1 of each bar and the outer hangers '11. each rerepresents a perspective view of a step-ladceiving one end of a bar. The long props or der provided with our improvements. Fig. 2 standards'D are each secured at its upper 70 is a sectional rear View of the upper part of end to the extended outer end of a bar p, and the ladder. Fig. 3 illustrates the foot-piece said props are further secured to said bars 10 connected with the lower part of the ladder. by means of the braces 0. A pulley 'r is con- Fig. 4 is a cross-section of the vertical standnected with one of the steps a of the ladder, ard of the foot-piece. and a cord or chain 8 is passed about said 75 A designates the main stiles'or side pieces pulley and is connected with each of the of the step-ladder, provided with the steps a, props D. The props thus constructed and the platform B being secured to the upper connected with the platform are severally adextremities of said side pieces, as shown. To justable, and when the ladder is placed on an the rear edges of the sides, toward the lower uneven surface the said props may be set at 80 0 end of the ladder, is fastened a cross-bar 1), different inclinations, as desired. The hangthe lower edge of which is curved, as seen in ers m and 72 maybe arranged so that the bars Fig. 3, for the purpose hereinafter mentioned. 19 will not be on the same straight line, but A foot-piece for the step-ladder is formed at an obtuse angle with each other, and the of a vertical standard 0, two inclined braces props D will diverge downward and occupya 85 c, and a cross-bar d, the parts peing connectwider space on the ground.

ed firmly together, as seen in Fig. 3. The up- We claim- 7 per part of the standard 0 is reduced and a 1. In a step-ladder, the combination, with shoulder e is thus formed on the rear face of the side pieces provided with steps and a the standard, and when the foot-piece is ad cross-bar fastened to said side pieces and ham 9o 4o justed in place the said reduced portion exing a curved lower edge, of a standard protends up between the cross-bar b and one of vided with a shoulder e and adapted to conthe steps a, the shoulder ebeing close against nect With said cross-bar, said standard being the curved lower edge of the bar I). A loose loosely connected by a bolt with the lower connection of the standard 0 with the ladder part of the ladder, substantially as and for 5 is formed by. a bolt f,whi'cli is passed through the purposes described.

a slot gin said standard into a cross-bar or 2. The combination, with the side pieces step at the lower end of the ladder. I provided with steps a and cross-bar b, of a As will be seen, when the device is set in foot-piece provided with a slotted standard 0, position, the main part of the ladder rests on provided with braces, and a securing-bolt 10a the shoulder e of the standard 0, the curved passed through a slot in the standard, whereedge of the bar I) being in contact with the by the said standard is secured to the lower part of the ladder, substantially as and for which are journaled in said hangers, props D,

the purposes described. pulley 0", carried by a step a, and a cord or 3. The combination, with the side pieces chain secured to the props and passing about I 5 and steps of I a ladder, of a platform at the said pulley, substantially as and for the purtop, said platform being provided with a seposes described.

ries of hangers, two bars which are seyerally In testimony whereof we have atfi xed our Journaled in two of said hangers, and two I signatures in presence of two witnesses.

said bars, substantially as set forth and de- 10 scribed.

4. The platform 13, provided with hangers m and n, in combination with the bars 10,

WVILLIAM C. EDWARDS.

props, one of which is connected with each of l ALEXANDER E. PARR.

VVitn esses L. M. THURLOW, A. KEITHLEY.

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