US1586038A - Chimney scaffold - Google Patents

Description

Patented May 25, 1926.

UNITED STATES ANSON J. HALL, OF DES MOINES, IOWA.

CHIMNEY SCAFFOLD.

Application filed December 10, 1923.

My invention has to do with a chimney scaffold adapted to hold bricks, mortar, tools or the like for a workman building or rejiiairing a chimney or performingother labor on a roof.

The object of my invention is to provide such a scaffold of simple, durable and comparatively inexpensive construction, built as a unit wit-h its parts connected together so that the scaffold can be easily moved as a unit from place to place and particularly on a roof where the handling of scaffolding material is difficult.

A further object is to provide such a scaffold having a supporting member and an element or elements hinged thereto, to stand at different angles with relation to the sup-- porting member, and to provide for each of said elements a brace hinged to the support-- ing member and adapted to coact with a corresponding element of the kind mentioned for holding the supporting member in rigid position, when said elements stand at different angles with relation to the sup: porting member.

IVith these and other objects in view, my invention consists in the construction, arrangement and combination of the various parts of my device, whereby the objects contemplated are attained, as hereinafter more fully set forth, pointed out in my claim, and illustrated in the accompanying drawings, in which:

Figure 1 shows a perspective view of a portion of a roof having thereon a scaffold embodying my invention.

Figure 2 is a longitudinal sectional View of my improved scaffold installed on a roof.

Figure 3 shows a perspective view of a slightly modified form of my invention, resting in position upon a roof ad acent to a chimney.

In the accompanying drawings, I have used the reference numeral 10 to indicate generally a roof pitching in both directions from a comb having extending upwardly from the central portion thereof: a chimney 11.

It is well known that it is difficult to get a scaffolding into place for the purpose of repairing such a chimney and especially where repairing shingles other than wood, and indeed, even where wooden shingles are used.

It is undesirable to nail into the shingles Serial No. 679,839.

in setting up a scaffold on account of the likelihood of causing leaks. My scaffold which can be used without nailing any parts to a roof is shown in one form in Figures 1 and 2 and has a supporting member 12.

In Figure 1. I have shown the scaffold on one side'of the chimney and in this con ncction, it may be mentioned that a similar scaffold may be placed on the opposite side and then a cross board placed at right angles to the scaffold for connecting the opposite scaffold members together similar to that shown in Figure 3.

Hinged to the underside of the supporting member 12 near the middle'thereof from end to end and spaced apart from each other are elements 13 designed to rest on a roof on opposite sides of the comb. The elements 13 may be hinged to the member 12 far enough apart'to let the member 12 rest upon the comb of the roof if desired.

Pivotedi to the underside of the member 12. spaced from the hinges 1a of the elements 13 at substantial distance on opposite sides thereof by hinges 15 are braces 16.

Each element 13 is provided with a series of notches or other stop elements 17 to hold the lower ends of the braces 16 for thus supporting the member 12 as shown in Fig ures 1 and 2.

By supporting the braces 16 in different notches 17 the. device can be adjusted for roofs of different pitch.

It will be seen that a scaffold of this kind can be handled as a unit, that it is con'iparatively light of weight and simple of construction and can be adjusted in places adjacent to the chimney 11 for the purpose of supporting bricks, motor, tools, etc. on the member 12 quickly and easily and without driving nails into the shingles or other roof covering material.

Where the chimney is located on the slanting roof instead of a comb, I use a modified form of invention illustrated in Figure 3. n that figure I have used the reference numeral 18 to indicate the chimney on the roof 19.

The scaffold of the kind shown in Figure 3 comprises a supporting member 20, an element 21 hinged to the underside thereof and a brace 22 hinged at 22'' to the member 20 and adapted to coact with the element 21 in the same way that the brace 16 coacts with the element 13.

I provide two duplicate members 20, 21 and 22 arranged one on each side of the chimney as shown in Figure 3, and connect the upper ends above the chimney by a cross member or the like 23 of any desired form.

It will be seen that when the braces 22 are placed in position for supporting the members 20, there are two tables one on each side of the chimney for holding mortar, bricks or the like.

A cross board 24 may be placed on the members 20 beside the chimney if desired for holding additional material or other tools.

The advantage of scaffolds of the kind herein described is obvious from the foregoing explanation. They are more easily handled than ordinary scaffolds and there are no parts to be lost, they are more quickly and easily set up and, therefore, less expensive than ordinary scaffolding and they eliminate the necessity for driving nails into the roof covering.

It usually takes from one to three hours to build a scaffold on a roof preparatory to repairing a chimney. That time is almost entirely saved where my scaffold is used. Minor repairs can be made, with the use of my scaffold, in the time it would take to put up the usual built-up scaffold. This saving of time and consequent saving of expense is especially important on repair jobs.

Some changes may be made in the construction and arrangement of the various parts of my improved scaffold without departing from the real spirit and purpose of my invention, and it is my intention to cover by my claim, any modified forms of structure or use of mechanical equivalents, which may be reasonably included within their scope.

I claim as my invention:

In a chimney scaffold of the class described, a pair of laterally spaced supporting platform members, a transverse con necting member secured to the top of, said supporting members at one end thereof for resting against a chimney on an inclined roof, a pair oi supporting elements hinged to the undersides of said supporting members at the same ends thereof which are connected by the transverse member to underlie the supporting platform members in inclined position on a roof, legs hinged to the undersides of said platform members at points substantially spaced from said trans-- verse member, said legs and said inclined supporting members having coacting parts, whereby the legs are held against slipping when in upright installed position.

ANSON J. HALL.

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