Ladder leveling device

Claim 2

An adjustable device for leveling a ladder including a ladder having two spaced stiles connected by a plurality of spaced ladder rungs therebetween, each of said stiles having front and rear faces, a ground engaging end portion and at least one bore extending through the stile adjacent to the ground engaging lower end portion thereof and in a direction extending from the front face to the rear face, the adjustable device comprising an elongated channel shaped ladder extending member defined by two spaced opposed side walls and a connecting wall extending therebetween, said channel shaped member being of a size to cooperatively engage and embrace a selected one of the ladder stiles adjacent to the ground engaging end portion thereof to form an aligned extension of the stile, a plurality of spaced apertures in each of said opposite side walls of the channel shaped member, each of the apertures in one of said side walls being in lateral alignment with a corresponding aperture in the other of said opposite side walls to form pairs of aligned apertures, each of the said pairs of aligned apertures being selectively registrable with the bore in the stile in different positions of the channel shaped member on the stile, and a pin member insertable through a selected aperture pair on the channel shaped member and through the bore in the stile in registration therewith to hold the channel shaped member in a desired position of adjustment and extension on said stile.

Claim 3

The device defined in claim 1 including a surface gripping means pivotally attached to the elongated channel shaped member for engaging a surface on which the ladder is to be supported.

Claim 4

The device defined in claim 1 wherein a flange is attached to each of said opposite side walls of the channel shaped member, said flanges project inwardly towards each other in spaced opposed relation, said flanges cooperatively engaging the stile of a ladder extending therethrough to hold the stile therein.

Claim 5

The device defined in claim 1 including backing means attached to at least one of said spaced opposed channel walls to frictionally engage the stile extending through the channel shaped member.

Claim 6

The device defined in claim 1 including means engagable with the pin member to prevent the pin member from undesirably coming out.

Claim 7

The device defined in claim 1 wherein said ground engaging end portion of at least one of the ladder stiles includes a plurality of spaced bores extending therethrough, each of said bores being registrable with selected ones of the aperture pairs in said channel shaped member in different positions of the channel shaped member on said stile.

Claim 8

The device defined in claim 1 wherein the ladder stiles are formed of wood.

Claim 9

The device defined in claim 1 wherein the ladder stiles are formed of metal.

Claim 10

In a ladder construction having space elongated support members with opposite ends and a plurality of spaced rungs extending therebetween, one of said support members having front and rear faces and a bore therethrough adjacent to one end, the bore extending through the one support member between the front and rear faces, the improvement comprising means to adjust the position of the end of one of said support members relative to the corresponding end of the other support member to compensate for irregularities in a surface on which the ladder is supported, said means including an elongated channel shaped member having an internal cross-sectional shape which closely approximates the cross-sectional shape of the elongated support members to cooperatively engage and embrace a selected one of said support members to form an aligned extension thereof, said channel shaped member having spaced opposite front and rear wall portions, and a wall portion connected therebetween, a plurality of spaced apertures located in each of said opposed wall portions, the apertures in one of said wall portions being in alignment with corresponding apertures in the opposite wall portion to form pairs of aligned apertures therethrough, each of said pairs of the aligned apertures being individually registrable with the bore through the elongated support member in different selected positions of adjustment of the channel shaped member thereon, and a pin member extendable through a selected one of said aperture pairs and through the bore in the support member to prevent relative movement therebetween.

Claim 11

In a ladder construction having space elongated support members with opposite ends and a plurality of spaced rungs extending therebetween, one of said support members having front and rear faces and a bore therethrough adjacent to one end, the bore extending through the one support member between the front and rear faces, the improvement comprising means to adjust the position of the end of one of said support members relative to the corresponding end of the other support member to compensate for irregularities in a surface on which the ladder is supported, said means including an elongated channel shaped member having an internal cross-sectional shape which closely approximates the cross-sectional shape of the elongated support members to cooperatively engage and embrace a selected one of said support members to form an aligned extension thereof, said channel shaped member having spaced opposite front and rear wall portions, and a wall portion connected therebetween, a plurality of spaced apertures located in each of said opposed wall portions, the apertures in one of said wall portions being in alignment with corresponding apertures in the opposite wall portion to form pairs of aligned apertures therethrough, each of said pairs of the aligned apertures being individually registrable with the bore through the elongated support member in different selected positions of adjustment of the channel shaped member thereon, and a pin member extendable through a selected one of said aperture pairs and through the bore in the support member to prevent relative movement therebetween.

Claim 12

In the ladder construction defined in claim 9 the further improvement of means engagable with said pin member to prevent removal thereof from the channel shaped member.

Claim 13

In the ladder construction defined in claim 10 said means engagable with the pin member includes means hingedly attached thereto.

Claim 14

In the ladder construction defined in claim 10 said means engagable with the pin member includes means threadedly engagable therewith.