US437389A

US437389A - Scaffold-bracket

Info

Publication number: US437389A
Authority: US
Publication date: 1890-09-30
Anticipated expiration: 1907-09-30

Description

D.- G. WRIGHT. SOAFFOLD BRACKET.

(No Model.)

Patented Sept. 30. 1890.

R'UNI'TED' STATES PATENT OFFICE.

DELOS o. WRIGHT, OF NORTH PARMA, NEW YORK.

SCA'FFOLD-BRACKET.

SPECIFICATION forming part of Letters Patent No. 437,389, dated September 30, 1890. Application filed June 10, 1890. Serial No. 354,873- (No model.)

To all whom it may concern:-

Be it known that I, DELOS O. WRIGHT, of North Parma, in the county of Monroe and State of New York, have invented a certain new and useful Improvement in Scaffold- Brackets; and I do hereby declare that the following is a full, clear, and exact description of the same, referencebeing had to the drawings accompanying this application.

My improvement relates to scafiold-brackets of that kind in which the parts are hinged together, so that when not in use the bracket can be folded compactly and stored away. Many devices of this kind are known, and I do not claim such broadly. These devices usually consist of an upright supportingstandard which fits the side of the building, a horizontal arm that supports the staging, and an angular brace that stiifens and holds the parts in position. The great difficulty in most brackets of the kind is that the brace is liable to be displaced either by the-weight that rests upon it or by violence in handling timber; and the object of my invention is to provide stops by which both ends are held in place and by which undue strain is prevented I on the hinges.

In the drawings, Figure 1 is a side elevation of the bracket attached to the side of a building. Fig. 2 is a sectional View of the up per outer corner on an enlarged scale. Fig. 3 is a similar view of the lower corner where the brace joins the supporting-standard. Fig. 4 is a face view of the bracket in the folded position.

The bracket is composed of three principal parts-the supporting-standard A, the horizontal arm B, and the angular brace C. At the top the standardA and armB are hinged together on the outside by a strap-hinge a. Therefore in folding, the arm B is turned up over and around the upper end of the standard A, as indicated by the arrow at the top in Fig. 1. By placing the hinge outside, the strain is lengthwise on the hinge, and greater strength is secured than would be if it were located inside.

The brace O is hinged at its lower end to the inside of the standardAby a strap-hinge band the upper endis free. When the bracket is folded, this brace simply turns up against the inside of the standard. The bracket" is attached to the side of a building by means of a bolt cl, which passes through a hole in standard A and through the side of the building and through a gib or'binding-block D, v

and is secured on the inside by a nut f, which rests against a washer g. When the parts are folded, as shown in Fig. 4, the bolt is passed through the three parts A B D and the nut attached behind, which secures said three .parts together, and the brace O is attached to the standard by a hook h, which hooks into an eye k of the standard.

In order to stay the brace B and prevent it from slipping, and at the same time prevent undue strain on the hinges, I employ the following arrangement-The lower end of the brace O is squared, forming a shoulder m, and below this is a right-angled lug 2', screwed fast to the standard and resting in close contact with the shoulder. This takes the great strain from the lower hinge and serves as a restingplace for the bottom of the brace. n is a hasp at the outer end of the arm B, and on the under side said hasp is formed with a stop p, similar to the stop 11, against which the upp end of the brace abuts, and by which it is held against outward .movement. The lower half n of the hasp n is provided with a slot 7', through which passes the right-angled end of a turning-button 8, attached to a plate 2;, screwed to the upper end of the brace. The lower half at of hasp n swings out and in. When the button is engaged therewith, as shown in Fig. 2, it looks the upper end of the brace to the armB and holds said end against the stop 10 and prevents any danger of the slipping or disengagement of the parts.

By the means above described the brace is made perfectly fast and all undue strain is takenfrom the hinges.

Having described my invention, I do'not claim, simply and broadly, a jointed bracket.

What I claim as new, and desire to secure by Letters Patent, is-

1. The combination, with the bracket consisting of the standard A, arm B, and brace O, hinged together, as described, of the stops 1 and 19, attached, respectively, to the standard and arm and supporting the opposite ends of the brace, as shown and described, and for the purpose specified.

2. The combination, with the bracket con- 5 sisting of the standard A, arm B, and brace O, hinged together, as described, of the stop i, attached to the standard, supporting the lower end of the brace, the hasp n, attached to the arm, provided with a stop p, supporting the to upper end of the brace, and aturning-button or catch 3, attached to the brace and engaging with the hasp to look the brace and arm together, as herein shown and described;

In witness whereof I have hereunto signed my name in the presence of two subscribing 15 witnesses.

' DELOS C. WRIGHT. \Vitnesses:

WV. I-I. W001), O. K. BUELL.