US451893A

US451893A - George tatjse campbell

Info

Publication number: US451893A
Authority: US
Publication date: 1891-05-05
Anticipated expiration: 1908-05-05

Description

(No Model.)

G. T. CAMPBELL.

LADDER. No. 451,893. Patented May 5,1891.

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NITED TATES GEORGE TAUSE CAMPBELL, OF SAN FRANCISCO, CALIFORNIA, ASSIGNOR OF ONE-HALF TO JAMES CAMPBELL, OF SAME PLACE.

LADDER.

SPECIFICATION forming part of Letters Patent No. 451,893, dated May 5, 1891.

Application filed October 6,1890. Serial No. 367,148. (No model.)

To all whom it may concern.-

Be it known that I, GEORGE TAUsn CAMP- BELL, a naturalized citizen of the United States, residing in the city and county of San Francisco and State of California, have invented certain new and useful Improvements in Ladders; and I do hereby declare the following to be a full, clear, and exact description of said invention, such as will enable others skilled in the art to which it most nearly appertains to make, use, and practice the same.

Hy invention has relation to certain new and useful improvements in ladders, which consists of the arrangement of parts and details of construction, as will be hereinafter more fully set forth in the drawings and described and pointed out in the specification.

The invention relates more especially to improvements in fruit-ladders; and it consists in providing supplemental supports whereby the ladder will be prevented from tilting laterally and falling over, thereby preventing liability of the user thereof being thrown therefrom.

My invention further consists in providing the ladder with an adjustable holding device whereon the basket may be secured for holding of the picked fruit.

Referring to the drawings, forming a part of this specification, wherein similar letters of reference are used to denote corresponding parts throughout the entire specification and several views, Figure 1 is a perspective view in elevation; Fig. 2, a broken longitudinal sectional view.

The letterA is used to indicate an ordinary ladder provided with the usual supports B. To the under face of the platform a, I pivotally secure the supplemental sup ports or legs C, which cross each other and project laterally from the ladder between the rear supports and steps when thrown open, as is clearly shown in Fig. 1. In order to allow for the inward and outward throw of the supports, I provide the chain c, which is attached to the rear support and uprights of the ladder. Said chains have the openings or loops 0' formed therein, through which the supports C extend. Thus as the ladder 5c is closed the supports will, by gravity, move inward or close together, so as to be out of the way, and as the ladder is opened the supplem ental supports will be thereby extended. Any suitable device may be employed in place 5 5 of the chains 0 with equally good effect.

To the platform a, I secure the plate d, to which is pivoted the clamp-plate cl, each of which have the opening d formed therein, through which the rod D passes. The outer 6c ends of plate (1 and clamp-plate d are connected by means of the thumb-screw e. The rod extends downwardly through openings e formed in the ladder-steps, but by means of the clamp-plate is prevented from moving out of its adjusted position. The outer end of the adjustable rod is bent so as to form the hookf, over which the handle of the basket is adapted to hang. By the adjustable rod I am enabled to raise or lower the basket to any desired height.

By constructing the ladder in accordance with the above description the picker is permitted to stand upright upon the platform thereof, without fear of the same tilting or falling over, and at the same time so adjust the holding-rod as to bring the basket to any desired height, thereby obviating the necessity of bending or stooping for the purpose of placing the fruit therein or bruising the same by dropping therein.

I am aware that minor changes may be made in the construction of ladders herein shown and described without necessitating or creating a departure from the nature and scope of my invention.

Having thus described my invention, whatI claim as new, and desire to secure protection in by Letters Patent of the United States, is

1. The step-ladder having the supplemental supports pivotally secured thereto and adapted to be extended by the movement or extension of the propping-legs of the step-ladder, substantially as set forth.

2. The step-ladder having the supplemental passing through said plates or leaves, sub- IO supports pivotally secured thereto, and havstantially as set forth. ing connection by suitable means with the In testimony whereof I affix my signature ladder and its ordinary pivoted or extensible in presence of two Witnesses.

5 supports, substantially as specified. r 1

3. The step-ladder having the frnit-hold- GEORGE PAUSE (JAMPBELL ing rod held adjustably thereto by the hinge- Witnesses: clamp, the leaves or plates thereof beingen- LINCOLN SONNTAG, gaged by an adjusting-screw, and said rod \V. V. HOPKINS.