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Publication numberUS302733 A
Publication typeGrant
Publication dateJul 29, 1884
Filing dateJan 15, 1884
Publication numberUS 302733 A, US 302733A, US-A-302733, US302733 A, US302733A
InventorsJohn Jayne
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
US 302733 A
Abstract  available in
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Claims  available in
Description  (OCR text may contain errors)



(No Model.)

No. 302,733. Patented July 29, 18.


to-Lilhogmphur. Wnslulnghm. n. c




SPECIFICATION forming part of Letters Patent No. 302,733, dated July 29, 1884.

Application filed J anuary 15, 1884. (No model.)

f0 all whom it may concern.-

Be it known that I, JorrN JAYNE, of Forkston, in the county of WVyoming and State of Pennsylvania, have invented a new and Im proved Pole-Ladder, of which thefollowing is a full, clear, and exact description.

The object of my invention is to provide a new and improved single-pole ladder which readily adjusts itself to unevenness of the ground, and whichladder can be held in place securely.

The invention consists in a pole in which rungs are secured, to the lower end of which pole a curved base-piece is pivoted, and to the upper end of which pole a prong or pin is secured, which projects from the rear side of the pole, all as hereinafter fully described, and pointed out in the claim. Reference is to be had to the accompanying drawings, forming part of this specification, in which similar letters of reference indicate corresponding parts in all the figures.

Figure 1 is a face view of my improved Fig. 2is a side view of the same. Fig. 3 is asectional plan view of the same.

To the lower end of a pole, A, a segmentally-eurved base-piece, B, is pivoted on the front side by means of a suitable bolt or pivot,

' for the purpose of inclining the ladder toward the object against which it rests, the concave edge of the base facing downward. proj ect from the pole, the rungs being inclined outwardly slightly, and being arranged alternately on opposite sides of the pole.

upper end of the pole an inwardly-projecting prong or pin, D, is secured. As the curved Rungs G On the base-piece B is pivoted to the lower end of the pole, the said base-piece at all times ad justs itself to the formation of the ground or base on which it rests, and the ladder will at all times have a good and firm bearing. The prong or pin D at the upper end of the pole may be driven or forced into the object against which the upper end of the pole-ladder rests, to holdthe upper end of the said ladderin place; but the principal objects of the pin D are to aid in climbing the sides of buildings and to hook over a limb of a tree, which the pin just reaches, to support the ladder while picking the fruit, the ladder being ordinarily sup ported by resting by itspole in 'a crotch of the tree when picking the fruit.

I am aware that a ladder composed of a sin gle bar provided with rungs projecting from opposite sides is not broadly new; and I am also aware that pivoted foot-supports have heretofore been used; and I therefore do not claim such inventions.

Having thus described myinvention, .whatl claim as new, and desire to secure by Letters Patent, is

An improved ladder consisting of the pole A, provided with the curved base-piece l3, pivoted to its lower end, the rungs G, inclined outwardly and projecting alternately from op- 6 posite sides, and the pin 1), projecting inwardly from its upper end, substantially as herein shown and described.




Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3019851 *Aug 1, 1960Feb 6, 1962Doss Roger CExtension ladder
US3026962 *Mar 3, 1961Mar 27, 1962Kramer Ned FLadder
US4787476 *Jan 29, 1988Nov 29, 1988Lee Richard DFor positioning a person in a tree
US5585688 *Nov 28, 1994Dec 17, 1996ProlightCompact fluorescent lamp