US818268A - Scaffold. - Google Patents

Description

No. 818,268. PATENTED APR. 17, 1906. D. LEUZ.

SGAFFOLD.

APPLICATION FILED APR.5, 1905.

2 SHEETS-SHEET 1 "wi ncome PATENTED APR. 17, 1906.

D. LEUZ.

SUAFFOLD.

DANIEL LEUZ, OF IOWA CITY, IOWA.

SCAFFOLD.

Specification of Letters Patent.

atenteoi Aprll 1'7, 1906.

Application filed April 5, 1905- Serial No. 253,977-

To all whom it may concern:

four men, more or less, according to the Be it known that I, DANIEL LEUZ, of Iowa strength of the parts.

City, in the county of Johnson and State of Iowa, have invented certain new and useful Improvements in Scaffolds; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

The object of this invention is to provide a scaffold especially adapted for painters and paper-hangers and capable of being readily extended, as well as adjusted to suit uneven ground or side hills.

The invention will be hereinafter fully set forth, and particularly pointed out in the claims.

' disposed arms which are designed to bear at their outer ends against the side or wall of a building or the like, and 3 horizontally-disposed boards resting on the arms 2.

The supports 1 consist each of a ladder member 4, having divergent sides connected by rungs 5. Between the upper convergent ends of the divergent sides of the ladder thearm 2 is pivotally secured by a bolt 6, passed through the flanged ears of a plate 7, secured to said arm. The latter is supported. at its outer end by a diagonal brace 8, hinged at its lower end to one of the rungs of the ladder, and at its outer end carries a hinged hasp plate 9 to accommodate the hasp 10, depending from the arm. 'Any suitable fastening device may be inserted through the hasp to prevent accidental displacement of the brace. The latter is of such length as to insure the arm 2 being in a horizontal position while the ladder is in an inclined'position. The outer end of the arm 2 is preferably recessed or concaved, so that its contact with the wall or building will be only at the edges. By placing two of these supports side by side, with the ends of their arms bearing against the wall or side of a building, the cross-boards 3 will, like the arms 2, occupy horizontal positions, thus forming a support for three or 12 12 designate extensible legs secured to the divergent sides of the ladder by keeperplates 13, which permit the legs to be readily moved inwardly or outwardly. The retention of each leg is secured by two keeperplates, one being attached to the leg itself and engaging the adjacent side of the ladder, while the other plate is secured to such side and engages the adjustable leg. 14 14 designate stirrups pivotally secured to the outer sides of these legs and having flanged ends 15, which overlap the side edges of the ladder as well as the edges of the legs. The lower flanged ends 15 of these stirrups are designed to engage the under or lower edge of a ladderrung, so as to thereby hold its respective leg in its extended position, preventing the lowering of the ladder. When, however, it is desired to adjust these legs to accommodate uneven ground or side hills, necessitating the legs being held at points which render the use of the stirrups impossible other than for the secondary function of serving to retain the legs and the ladder in proper relative positions as against spreading, I form in each of the sides of the ladder a series of holes 16 to accommodate removable pins 17. By plac ing the latter in any one of these holes above the upper keeper-plate 13 a leg will be readily retained in its extended position.

18 designates a step secured to the outer face of one of the adjustable legs, so that when the length of the support is extended an operator may readily reach the ladder member. This step is preferably formed from a single piece of metal curved to pro vide a foot-rest. It is bolted at its upper and lower ends.

The advantages of my invention are apparent. It will be readily seen that by means thereof an extensible support for a scaffolding is secured and that the same may be applied to buildings of different heights and likewise be of any capacity desired. It is also manifest that the support may be used to work on stairways, either or both legs being adjusted, and that inequalities in the soil do not interfere with the use of the scaffold. When being transported or not in use, the brace and the arm of each support may be folded against the ladder portion thereof, and thus be kept out of the way, since the ladder is so constructed that such parts when folded.

inwardly will be substantially within the plane of the sides or stiles of the ladder. A scaffold of the character herein described is simple and inexpensive and not liable to readily get out of order.

I claim as my invention 1. In a scaffold, an inclined support comprising a ladder-section having sides and connecting-rungs, an arm, means for permanently pivotally securing one end of such arm between the upper ends of said sides, a brace hinged at its lower end to one of said rungs, and means for detachably securing the outer end of said brace to said arm, said laddersection being constructed to permit the arm and brace to be folded between the sides thereof.

2. The scafiold-support herein described comprising a ladder member composed of a series of rungs and sides, extensible legs fitted against said sides, keeper-plates for retaining the legs in proper positions relatively to said sides, and stirrups pivotally secured to said legs and having upper and lower flanged ends overlapping the latter and the sides of the ladder, the lower flanged ends of said stirrups being designed to engage the under side of a ladder-rung for holding the legs in their extended positions.

3. A scaffold comprising two inclined supports and horizontally-disposed arms upon which cross-boards are designed to rest, each support consisting of a ladder member having sides formed with holes or openings, extensible legs secured to said sides, keeperplates overlapping the sides and legs for retaining the latter in proper positions relatively to said sides, some of said keeper-plates being secured to and movable with said legs, removable pins desi ned to fit in said holes or openings, above suc keeper-plates and steps secured to the sides of said extensible legs, said horizontally-disposed arms being pivotally mounted between said sides, and inclined braces for supporting said arms, as set forth.

4. A scafiold comprising two inclined supports, each support consisting of a laddersection having divergent sides and connecting rungs, extensible legs, an arm permanently pivotally secured at its inner end between the convergent ends of said sides, an inclined brace pivoted to one of said rungs and detachably engaging said arm, -keeper-plates for retaining the legs in proper position relatively to said sides, stirrups pivotally secured to said legs and having lower flanged ends for engaging the under side of a ladder-rung, and cross-boards designed to rest on and be supported by the arms of two inclined supports, said ladder-section being constructed to permit the arm and brace to be folded down between the sides thereof.

In testimony whereof I have signed this specification in the presence of two subscribing witnesses. DANIEL .LEUZ. Witnesses:

M. J. WADE, JAMES KAZZISHEK.

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