US201691A - Improvement in shingling-brackets - Google Patents

Description

T M. MQGLELLAND 82; J. A. GRANT. Shmglmg Bracket No. 201,691. Patented March 26,1878.

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INVENTOR 775% WITNESSES ATTORNEYS.

UNITED STATES PATENT OFFICE.

THOMAS M. MGGLELLAND AND JAMES A. GRANT, OF MOUNT PLEASANT, IOWA.

IMPROVEMENT IN SHlNGLlNG-BRACKETS.

Specification forming part of Letters Patent No. 201,691, dated March 26, 1878 application filed December 28, 1877.

To all whom it may concern Be it known that we, THOMAS M. McGLEL- LAND and J AMESA. GRANT, of Mount Pleasant, in thecounty of Henry and State of Iowa, have invented a new and Improved Bracket for Scaffolding, of which the following is a specification:

Figure 1 is a side elevation, partly in section, of our improved bracket. Fig. 2 is a plan view.

Similar letters of reference indicate corre sponding parts.

The object of our invention is to provide an adjustable bracket for supporting scaffolding on inclined roofs; and it consists in a bedpiece having a chisel-shaped end for entering between the shingles, and in a lever pivoted to an arm projecting from the bed-piece, and arranged to clamp the butt of a shingle between it and the chisel-shaped end of the bedpiece. The said lever is moved by a bar that is actuated by a screw. The scafiold is supported by the arm, and is kept from slipping by the projecting end of the bar that moves the lever.

Referring tothe drawing, A is the bed-piece, to which all of the other parts of the device are attached. This bed is slightly angled, so that the chisel-shaped end a conforms to the inclination of the upper surface of the shingle, while the part b conforms to the inclination of the roof.

The under surface of the part A is recessed, to insure a firm bearing of the bedpiece on the roof. A curved standard, 0, projects from the bed-piece A, for supporting the lever B, which is mortised and placed on the standard, and pivoted on a pin, 0, that passes through both lever and standard.

The short arm of the lever B is curved downward, sharpened, and serrated, and the longer arm of the said lever is notched or forked, to receive the bar h, which is pivoted on the pin *5, and extends both above and below the lever B. The lower end of the said bar is notched, and placed on a rib, is, formed on the bed-piece A, and its end is beveled, so that the screw Z presses squarely against it.

When the device is in use the scaffolding n is placed on the lever B, between the upper end of the curved standard 0 and the upper end of the, bar h.

The device is used by inserting the chiselshaped end a between two courses of shingles, with the shoulder 0 on the bed-piece against the butt of the shingle. The screw lis then turned so as tothrow the bar h forward and move the lever B, so that its serrated edge clamps the butt of the shingle firmly against chisel-shaped part a.

As many of the brackets as may be required are fastened in the course of shin gles,when the scaffolding n is put in place. I

Two or more holes are made in the bar it and curved standard 0, so that the inclination of the lever B may be changed to suit the pitch of the roof.

Having thus described our invention, we claim as new and desire to secure by Letters Patent- The combination of the angled bed-piece A, having the chisel-shaped end a, the curved and serrated lever B, the bar h, and adjustingscrew Z, substantially as shown and described.

THOMAS M. MCGLELLAND. JAMES A. GRANT.

Witnesses:

JAMES BIGELOW, B. F. MILLSPAUGH.

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