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Publication numberUS1702249 A
Publication typeGrant
Publication dateFeb 19, 1929
Filing dateOct 21, 1927
Priority dateOct 21, 1927
Publication numberUS 1702249 A, US 1702249A, US-A-1702249, US1702249 A, US1702249A
InventorsDavidson Frederic A
Original AssigneeChesebro Whitman Co Inc
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Stepladder
US 1702249 A
Images(2)
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Description  (OCR text may contain errors)

Feb. 19, 1929. 1,702,249

F. A. DAvlDsoN STEILADDER Pled Oct. 21. 1927 2 Sheets-Sheet 2 INVENTOR El. a uo'daon/ Je Y m.

'MSA on Y Patented Feb. 19, 1929.

UNITED `STATES PATENT OFFICE.

FREDERIC A. DAVIDSON, ori CHICAGO', ILLINOIS, AssIGNoR 'ro CHESEBRO, WHITMAN CO. INC., OF LONG ISLAND CITY, Naw YORK, A CORPORATION or NEW YORK. i

' STEPLADDEB.

Application ined october 21, 1927. serai No. masso.

This invention relates to step ladders, and has for its general Object andpurpose to provide a ladder of simple and durable construction having certain novel features whereby the utility and serviceability of such devices will be increased.

It is one of the detail objects of the invention to provide a platform member pivotally mounted at One-Of its ends between the front legs of the ladder and adapted to serve as one,

of the ladder steps, the other end of the platform being supported `upon a connecting member between the rear ladder lesrswheu the device is` in use, and means extending between and fixed to the rear ladder legs and having a slidable connection with said platform to automatically raise the same to a. position between the front Vand rear pairs of ladder legs as the same are folded or collapsed upon each other.

It is also another Object of my invention to provide an improved means for'pivotally connecting the `front and `rear ladder legs with each other at their upper ends. H

` For the convenience of workmen and mechanics,1 also propose to provide a novel form of pail holder, and atool receiving drawer slidably mounted upon the under side of the top step of the ladder.

With the above and other objects in view, the invention consists in the improved step ladder, and in the form, construction and relative arrangement of its several parts as will be hereinafter more fully described, illustrated in the accompanying drawings, and subsequently incorporated in `the subjoined claims.

In the drawings, wherein I have illustrated `several simple and practical embodiments of the invention, und in which similar reference characters designate correspondmg parts throughout the several v1ews,-

Figure 1 is a front elevation Ot' my im-` proved la'dder g.

Fig. 2 Is a side view t-hereoi showing the ladder collapsed or folded;

Fig. 3 is a detail side elevation of the upper part of the step ladder showing theparts inA sitioned 'between these sleeves and the inner Fig. 6 is a detail sectional view taken on the line 0f Fig 1' AReferring in detail to the drawings, 5 designates the front side rails or legs Of the stepV ladder between which at properly `spaced intervals a series of horizontal steps 6 are rigidly xed. Preferably ,I as `herein shown, in addition to securing the ladder stepsat'eaoh end thereof to the respective fronti-nils 5 by means ofnails drivenhorian inclined bracing strut 7 is secured to the underside of the step adjacent each of its ends and to the respective rails 5. A block or cleat 8 is also engaged with the under side of the ladder step and is urged upwardly against the central ortion thereof by a resilient tension rod 9 w ich `is engaged in a notch or recess in the lower face o said cleat, and extends therefrom in upwardly converging relation to the `step through openings in the bracing struts 7 and issuitably fixed at its opposite `ends to the side rails 5. In this `zontally through the rails `and into the steps.

manner, it will be evident that each stepis very rigidly secured infxed relation to the spaced ladder rails.

To the upper end of each ofthe front legs or rails 5, a member 11 Of channel or U-shaped form in cross section is secured. The upper ends of the rails are fitted into these chal- Thespaoed rear legs `13 of the ladder `are rigidly1 connected with each other by means of a series of horizontal rods 16. Above the uppermost fixed step 6 of the ladder a similar rod. 17 connects the front ladder rails or legs 5. A platform 118 is provided adjacent one Of its ends and at its Opposite side edges with suitable bearing sleeves 19 `loosely engaged on the rod 17, spacing thimbles 20 beingpofaces of the rails. When the platform is ina horizontal position, it extends forward ly over the rod 17, the end edge thereof being `por-Jitioiled in relation to the side rails 5 similarly .to the frontcdgesfo the `fixed ladder step 6 so that this end of the platform '1S will serve as an additional step for the ladder. The other end of the platform 18 when in the horizontal position is supported upon the uppermost connecting rod 16 between the rear rails or legs 13 of the ladder. Immediately below this rod, the. `opposite ends of a guide bracket 21 are securely fixed to the inner faces ofthe rails 13, said bracket member consisting of a rod having side portions obliauely extending from the fixed ends of said bracket inwardly and upwardly from the rails 13 and connected by a horizontal in termediate portion 22. The bracket member 21 is rigid and rigidly applied to the rails 13. This intermediate portion of the bracket rod is slidingly confined against the under side of the platform 18 by means of a metal strap 23 extending over saidbracket rod and fixed at its ends to the platform. By means of this construction, it will be evident from a comparison of Figs. 2 and 3 of the drawings, that the platform 18 will be automatically raised or pivotally moved upon the rod 17 to an upwardly extending obliquely inclined position therefrom `between the front and rear rails or legs of the ladder, as said ladder legs are folded or collapsed upon each other. To the inner side of one ofthe front ladder legs or rails adjacent its upper end, a suitable guide member 211 is seci'lred, and a simi lar guide member is also secured to the front edge of the top step or platform 5 of the lad` der in vertical alignment with the guide 24. A rod 26 is loosely movable through these guides and is provided with a hook 27 on its upper endy which is adapted to engage the handle or bail of a pail. The lower guide member is provided with a. clamping screw 28vto a rod 26 so that when the rod `is lowered upon the bail or handle to confine the same between the hook 27 and the top step 15, the set screw may be tightened against said rod to thereby securely tix the same in place.

Upon the under side of the top step suitably spaced guides 29 are secured for a sliding drawer 30.' This drawer is adapted to receive tools or other articles and is movable rearwardly between the guides to open position as indicated in dotted lines in Fig. 3 of the drawings. Also an oil can holder or support indicated at 31 may conveniently be secured to the inner side of one of the front ladder legs 5.

Below the platform 18, the usual pivotally connected spreader links 32 connect the `front and rear pairs of ladder legs 5 and 13 with each other.

From the foregoing description considered in connection with the accompanying drawings, the construction, purpose and several advantages of the novel features of my improved step ladder will be fully and clearly understood. The platform 18 provides a means for supporting pails or other heavy articles, and owing to the manner of pivotally connecting the rear legs at their upper ends with the front ladder legs and the arrangement of the bracket member 21 and its connection with the under side of said. platform, it will be apparent that in the folding or collapse of the ladder after use it is not necessary to separately manipulate said platform, but it is automatically moved into folded relation `between the :spaced ladder legs in the folding or collapsing movement of said pairs ofladder legs upon each other. At the same time, as above explained, the front end of this pivotally lmovable platform is so mounted and supported between the front ladder `legs that it constitutes an additional ladder step. It will therefore, be apparent that a ladder of this construction will be very convenient and serviceable in practical use, while at the same time, owing to the very simple form and construct-ion of the several elements, my present improvements do not add materially to the manufacturing cost to such step ladders as heretofore made.

I :have herein shown and described one simple and practical embodiment of the several essential features of my new step ladder, nevertheless it is to be understood that my presentimprovements might also be in` corporated in various other alternative struc'- tures, and I accordingly reserve the privilege of resorting to all such legitimate changes therein as may be fairly embodied within the spiritand scope of the invention as claimed.

I claim:

1. `A step ladder comprising spaced front legs having a plurality of vertically spaced steps rigidly secured therebetween, spaced rear legs pivota-lly connected at their rear ends with the front legs, aplatform pivotally mounted at one of its ends between the front ladder legs to constitute an additional step for the ladder, means connecting the rear ladder legs with each other and supportin@f the platform in a horizontal position, an additional means rigidly fixed to the rear ladder legs `and slidably connected with said platform to pivotally move the same up wardly .to an obliquely inclined position be# tween the front and rear pairs of ladder legs when the sameare folded and collapsed upon eachother.

and supporting-the platform in a horizontal position, a rigid immovable `bracket member extending between and rigidly and immovably secured to the rear ladder legs and inclined inwardly and upwardly therefrom, and means on the under side of the platform for sliding` engagement with the rigid immovable bracket whereby the platform is pivotally moved upwardly to a vertically inclined position between the front and rear pairs of ladder legs as the same are folded relative to each Y other.

In testimony that I claim the foregoing as my invention, I have signed my name hereto.

FREDERIC A. DAVIDSON.

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3422923 *Oct 3, 1967Jan 21, 1969Lund Ordell RConvertible combination platform and step for ladders
US3472339 *Feb 21, 1967Oct 14, 1969Crisogono Herrera CDevice for supporting a fisherman over a body of water
US5722507 *Jan 11, 1996Mar 3, 1998Cosco, Inc.Step stool assembly
US5937968 *Aug 13, 1998Aug 17, 1999Cosco, Inc.Step stool
US6427805Jan 7, 2000Aug 6, 2002Cosco Management, Inc.Folding step stool
US6536557Aug 23, 2001Mar 25, 2003Cosco Management, Inc.Utility tray for step stool
US6550579Aug 10, 2001Apr 22, 2003Cosco Management, Inc.Step stool
Classifications
U.S. Classification182/125, 182/129, 182/216
International ClassificationE06C1/00, E06C7/14, E06C1/393, E06C7/00
Cooperative ClassificationE06C7/14, E06C1/393
European ClassificationE06C1/393, E06C7/14