US854302A

US854302A - Hoisting-bracket.

Info

Publication number: US854302A
Application number: US36182307A
Authority: US
Inventors: Peter A Nelson
Original assignee: Individual
Current assignee: Individual
Priority date: 1907-03-11
Filing date: 1907-03-11
Publication date: 1907-05-21
Anticipated expiration: 1924-05-21

Description

UNITED STATES PATENT OFFICE.

HOISTING-BRACKET.

Specification of Letters Patent.

Patented May 21, 1907.

Application filed March l1, 1907. Serial No. 361,823.

To all whom it may concern:

Be it known that I, PETER A. NELSON, a citizen of the United States, residing at Wyanet, in the county of Bureau, State of Illinois, have invented certain new and useful Improvements in Hoisting Brackets, of which the following is a specification, reference being had therein to the accompanying drawing.

This invention relates to a hoisting bracket, and particularly to a structure adapted for application to an inclined shingled roof.

The invention has for an object to provide a supporting arm adapted at one end to be inserted beneath the shingles and to receive at its opposite end a hoisting block, together with supporting legs extended diagonally therefrom intermediate of its ends and a brace for retaining said legs in proper posi.- tion, all of said parts being adapted to fold into a compact position for transportation or storage. l

Other and further objects and advantages of the invention will be hereinafter set forth and the novel features thereof defined by the appended claims.

In the drawings z-Figure 1 is a perspective of the invention in position for use, and Fig. 2 is a similar view of the same folded.

Like numerals refer to like parts in the several views of the drawing.

Referring to the drawing, the numeral I designates a supporting arm which is preferably formed of a fiat bar of material having one angularly disposed end 2 twisted at a right angle to the body of the bar, as shown at 3, and suitably beveled or sharpened, as shown at I for convenient insertion beneath the roof shingles, as shown in Fig. 1. The opposite end of this bar is provided with any desired connecting device for the hoisting apparatus, for instance, a hook 5 adapted to receive the block and tackle 6. Intermediate of the ends of the bar are the supporting legs 7 each of which is pivoted to the bar by the upper portions 8 thereof which vlie parallel to each other, while the lower ends of these legs extend diagonally in opposite directions from the arm l. The portions 8 are connected to the bar by means of a pivot 9, and the lower ends of the legs are sharpened as at 10 for insertion into the shingles of the roof. These legs may be formed of any desired configuration, but preferably of a plate of metal folded upon itself, as shown in Fig. 2, the ends thereof being compressed together whereby a greater strength and rigidity is secured with a minimum weight. vThe arm 1 is provided with a series of pivoting apertures 11 by which the positionV of these legs thereon may be adjusted to suit the pitch or inclination of the roof and the position of the bracket thereon.

The legs 7 are connected at their lower ends with the arm l by means of diagonally disposed braces I2 pivotally connected to the legs at 13 and to the parallel links 14 at the points 15. The braces are provided with stop lugs I6 to retain the same in proper open position. The inner ends of the parallel links 14 are connected to the arm I by the pivot 17 which may be adjusted to any desired extent by means of the apertures ISin said arm. Under some conditions of use it is desirable to brace the bracket against lateral strain, and this may be accomplished by means of the rod 19 pivotally connected to the pivot 9 by means of the eye 20 and provided at its free end with an inserting hook 21 for insertion in the roof shingles.

The operation of the invention will beclear from the foregoing description, and it will be seen that the same is adapted for very convenient application and use and can be stored in a minimum space by simply folding the parts into the position shown in Fig.l 2. When applied a rigidly supported hoisting arm is provided which can be adjusted to any desired position upon a barn or other structure, and changed in position as found desirable to facilitate the hoisting and storage of material. The disposition of the diagonally disposed legs intermediate of the ends of the supporting arm properly braces the same against lateral displacement, and provides the extension for the application of the block and tackle, while the adjustable connection of these legs and their bracing connection to the arm permits the proper adjustment for differences in the pitch of the roof, and the angle at which said arm is to be disposed.

Having now described my invention and set forth its merits, what I claim and desire to secure by Letters Patent is 1. In a hoisting bracket, a supporting arm provided at one end with an angularly disposed attaching portion, opposite diagonally disposed legs pivoted to said arm intermediate of its ends, and a brace extending from the lower portion of said legs to said arm.

2. In a hoisting bracket, a supporting arm .provided at one end with an angularly dis- IIO posed attaching portion, opposite diagonally disposed legs pivoted to said arni intermediate of its ends, a brace extending from the lower portion oi said legs to said arm, and y means for adjustably connecting said legs and braces to said arm.

3. In a hoisting bracket, a supporting arin provided at one end with an angularly disposed attaching portion, opposite diagonally disposed legs pivoted to said arrn intermediate of its ends, a brace extending from the lower portion of said legs to said arm, and a bracing rod extending from the pivot of said legs and provided with an inserting hook.

4. In a hoisting bracket, a supporting arm provided at its inner end with an angularly disposed attaching portion, opposite diagonally disposed legs having parallel upper ends pivotally connected to said arm, diag- Onally disposed braces extending from the lower portion of said legs, and parallel links pivotally connected to said braces and said arm. l

5. In a hoisting bracket, a supporting arm provided at its inner end with an angularly disposed attaching portion, opposite diagonally disposed legs having parallel upper end pivotally connected to said arm, diagonall;T disposed braces extending from the lower portion of said legs, parallel links pivotally connected to said braces and said arni, and means for adjusting the pivotal connections Of said links and legs with said arm.

In testimony whereof, I ailix my signature in presence of two witnesses.

PETER A. NELSON.

Witnesses:

J. W. MOUNT, ROY C. MONTGOMERY.