US1177069A - Extension-foot for ladders. - Google Patents

Description

H. VEROW & FA. SOUCCIE.

EXTENSION FOOT FOR LADDERS.. APPLICATION .HLED AUG. 17. 1915.

Patented Mar. 28, 1916.

I 27 ammw H VervM f f kgowaala HENRY vnaow AND rnamminn r. sonccrn, or BREWER, MAINE.

EXTENSION-FOOT FOR LADDERS.

Specification of Letters Patent.

Patented Man. as, rare.

Application filed August 17, 1915. Serial No. 45,970.

To all whom it may concern:

' Be it known that we, HENRY Vnnow and FERDINAND P. Souoora, citizens of the United States, residing at Brewer, in the county of Penobscot and State of Maine, have invented certain new and useful Improvements in Extension-Feet for Ladders, of which the following is a specification.

This invention relates to improvements in ladders and like devices, and has for one of its objects to provide a simply constructed attachment whereby one or both sides of the ladder may be extended to enable the ladder to be supported upon uneven surfaces and which does not interfere with the ordinary uses of the ladder.

With these and other objects in view, the invention consists in certain novel features of construction as hereinafter shown and described and then specifically pointed out in the claims; and in the drawings illustrative of the preferred embodiment of the invention' Figure 1 is a front elevation of the lower portion of a ladder, partly in section,

with the improvement applied; Fig. 2 is a side elevation of the parts shown in Fig. 1 with the covering plate detached; Fig. 3 represents a perspective view of a portion of the round of the ladder and the slidable pawl member, detached and separated.

Corresponding and like parts are referred to in the following description and indicated in all the views of the drawings by the same reference characters.

The improved device may be applied without material structural change, to ordinary ladders, step ladders, and like devices, and in the drawings illustrative of the preferred embodiment of the invention, the device is shown applied to an ordinary ladder, the

side members of the ladder being indicated conventionally at 10-11 and two of the rounds at 12-13, the round 13 being the lowermost round of the ladder. The round 13 is preferably formed tubular, for instance a section of gas or steam piping, and is provided with longitudinal slots near the ends, one of which is represented at 14c.

Formed in the outer surfaces of thesides 1011 are longitudinal recesses, one of which is represented at 15, and opening downwardly through the lower ends of the sides. The'recesses 15 are covered by plates 16 secured in any suitable manner to the ladder sides, as for instance by screws, one of I which is represented at 17 Slidably disposed in the channel 15 is an extension member 18 having a lateral foot 19 at the lower end and provided with a plurality of ratchet teeth 20 near the upper end. The foot 19 is also provided with an extension 21 projectmg lnwardly of the inner face of the ladder side to form a foot rest to enable the member 18 to be projected by pressure applied by the foot of the operator. A spring 22 is connected at one end at 23 to the extension member 18, and at the other end preferably to the round 12 next above the tubular round 13, as shown at 24, and operating to maintain the member 18 yieldably in its withdrawn position, as shown at the right of Fig. 1 and in Fig. 2.

.Slidably disposed in the tubular round 13 isa pawl device 25 having a wedge-shaped projection 26 to engage the ratchet teeth 20,

one at a time. Connected to the pawl member 25, is a stud 27 extending through the slot 14 in convenient position to be actuated by one of the fingers of the operator. A spring 28 is located within the tubular member 13 and exerts its force against the pawl member 25 to maintain the same yieldvably in its outer position.

For the purpose of illustration, each of the sides of the ladder is shown provided with one of the extension members 18 and its attachments, but it will be understood that the ladder may be constructed with one of the extensions only in one of its sides, without departing from the principle of the invention or sacrificing any of its advantages. A guard device 29 is shown connected to the ladder sides below the tubular round member 13 to guard the studs 27 and prevent their accidental operation.

The lower face of the foot member 19 is preferably formed hollowed or concaved, as shown in Fig. 2, to enable it .:to grip the ground more thoroughly when in use. The member 18, together with its foot 192l, are preferably constructed integral and of malleable iron, steel or the like. The memlost of the side members having an outwardly and downwardly openin guideway, a tubular round connecting sal side members and communicating by its interior -with the guideway, an extension member including a stock slidable in said guideway and having a plurality of ratchet teeth, a cover for the outwardly opening portion of said guideway, and a spring pressed pawl operating,

'1,177,oee

and counicating by its interior with the 'guideway and having a longitudinal slot,

an extension member including a stock slidable in said guideway and having a plurality of ratchet teeth, a cover for the outwardlyopening portion of said guideway, a spring pressed pawl operating in said tubular round and engaging said ratchet teeth,

' and a pin carried by said pawl and extending through the slot of the tubular round. I

In testimony whereof we aflix our signatures.

HENRY VEROW. his [1,. 8-]

' FERDINAND r. x souccm. 8.]

' mark

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