US944529A

US944529A - Painter's scaffold.

Info

Publication number: US944529A
Application number: US52757509A
Authority: US
Inventors: William W Wheeler
Original assignee: Individual
Current assignee: Individual
Priority date: 1909-11-11
Filing date: 1909-11-11
Publication date: 1909-12-28
Anticipated expiration: 1926-12-28

Description

' W; W. WHEELER. PAINTEEJS SCAFFOLDL APPLIGATION FILED JULY 18, 1908. RENEWED NOV.11, 1909.

Patented Dec. 28, 1909.

INVENTOR J1; ATTORNEY- WITNESSES: I

30 2 of said leg extends.

- section.

WILLIAM W. WHEELER, OF CLOQUET, MINNESOTA.

PAINTERS SCAFFOLD.

Application filed July 18, 1908, Serial No. 444,241.

To all whom it may concern:

Be it known that I, WILLIAM W. WHEELER, a citizen of the United States, residing at Cloquet, in the county of Carlton and State of Minnesota, have invented certain new and useful Improvements in Painters Scafiolds; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled- ;ya in the art to which it appertains to make and use the same.

My invention relates to scaffolds and has for its object the provision of an improved scaffold adapted for the convenient use of house painters.

It consists of the constructions, combinations and arrangements of parts hereinafter described and claimed.

In the drawings, Figure 1, is a side elevation of one form of my invention, Fig. 2 is a vertical central section of a telescopic post or leg forming part of the same. Fig. 3, is a front elevation of the said scafiold, omitting portions of the operating ropes. Fig. 4, is a fragmentary perspective view of a modified form of one of said telescopic posts.

In the drawings, 1 and 1 are different forms of the outer and lower section of a telescopic leg, into which the uppr section Said lower section is preferably tubular in form, as in Figs. 1, 2 and 3; but said lower section may be of any suitable form, as, for example, of angular construction as shown in Fig. 4. In either forms of construction, a dog 3, is pivotally secured to the upper section and is adapted to sa 'n on its pivot to a vertical position when said up er section is vertical, and to swing forwardl, at its lower end when said leg is 40 inclined! forwardly. Said lower section is provkl ed with a plural number of steps, of a y itable construction as 4 (Fig. 2) or as 4* ig. 4), which steps 4 are formed by b iding inward material from the front wall of form 1 of said lower section; the

teps 4 are formed by securing cross-bars to the diverging wings of form 1 of said lower These steps in either case are adapted to engage said dog at various elevations when the leg is inclined forward,

and to thereby support said upper or inner section. Secured to the inner section 2 of said 'leg, near the lower end thereof is a flexible hauling device of any suitable construction or material, as, for example, a

rope 5, which extends upwardly and over a Specification of Letters Patent.

Patented D ec.-28, 1909.

Renewed November 11, 1909 Serial No. 527,575.

of an operator, who, by hauling thereon may draw said inner section upwardly to lengthen the leg. Depending from said upper section at a point near the upper end thereof is a pulley 7, secured to said section in any suitable manner, as by means of a chain 7 a and pin 7 In the complete scaffold there are two such legs, similarly equipped with hauling means. If desired, the lower sections of said legs may be tied together by tie rods 8, and, if desired, each leg may be provided with a pointed ferrule 9. Suspended in any suitable manner and by any suitable means, from the pulleys 7 7, is a standing board, or ladder 9 of any suitable construction, such as is commonly used by painters and is well known to the art.

In operation, the standing board or ladder 9 is first connected with the legs. The legs are then extended as far as desired to reach the necessary height on the wall to be painted, the dogs engaging the steps when the legs are inclined forward against the wall. The painters may then take their position on the standing board and by hauling away on the suspending cables may raise the standing board from the ground to the desired height. The free ends of the suspending cables are then made fast in any suitable manner or to any suitable anchorage within reach of the operator or operators.

In taking down the scafiold, the standing board is first lowered preferably to the ground so as to ease the strain on the legs. The legs are then raised from inclined to vertical position, and the upper sections are drawn up a trifle to permit the dogs to swing clear of the supporting steps. The upper sections are then lowered into the lower sections and the standing board or standing board and its suspending cables or said suspending cables and blocks may then be detached from the upper sections of the legs. Said tie rods may then if desired be unhooked or detached from the lower ends of the legs.

I am aware that some forms of extensible scaffold legs are old, and I do not therefore claim such legs broadly. It is obvious, however, that within the scope of my claim minor modifications of said construction may be made, and especially may the device 1o pivotally secured to said upper section near the lower end thereof and adapted to hang vertically clear of said steps when said leg is in vertical position and to swing forward and engage one of said steps below the same when said leg is inclined forwardly. 15 In testimony whereof I hereunto affix my signature in presence of two witnesses.

WILLIAM W. IVI-IEELER.

W'itnesses WILLIAM G. J oHNsoN, J. E. DIESEN.