US1129218A - Scaffold-bracket. - Google Patents

Description

J. J. T. MAGKL EM.

SGAFFOLD BRACKET,

APPLICATION FILED SEPT. 8, 1914.

1, 1 fil 8.. Patented Feb. 23, 1915.

2 SHEBTSSHEET 1.

THE NORRIS PETERS 60.. PHOTO-LITHQ. WASHINGTON, D C.

J. J. T. MAGKLEM.

SGAFPOLD BRACKET.

APPLICATION FILED SEPT.9, 1914.

Patented Feb. 23, 1915.

2 SHEETS-SHEET 2.

[EU m 'HE NORRIS PETERS co, PHOTO-LITHG. WASHING TON D r JOHN JOYCE TI-IOMASLMACKLEM, OF I'IOQUIAIVI, WASHINGTON.

.SCAFFOLD-BBACKET.

Specification of Letters Patent.

Patented Feb. 23, 1915.

Application filed September 8, 1914. Serial No. 860,635.

To all whom it may concern Be it known that I, JOHN J oven THOMAS MAGKLEM, a citizen ofthe United States, of the town of Hoquiam, in the State of ashington, United States of America, have invented certain new and useful Improvements in Scafiold-Brackets, of which the following is a specification.

My invention relates to improvements in interconnecting brackets for scaffolds and like structures, and the object of the invention is to devise a bracket which will securely hold the horizontal supporting timbers of a scaffold either in an edgewise or flatwise position to the main vertical support of the scaffold at any height required and it con sists essentially of a bracket body having a pair of parallel slots therein into which the projecting ends of the horizontal supporting timbers extend-clamping screws extending through each side of the bracket against the outer sides of the timber and means for detachably connecting the bracket to the vertical scaffold support as hereinafter more particularly explained by the following specification.

Figure 1 is a perspective view showing my bracket designed to support a horizontal scaffold timber between a vertical ladder and an adjacent wall. Fig. 2 is a perspective view showing my bracket applied to supporting a horizontal scaffold timber between two vertical ladders. Fig. 3 is a perspective detail of my bracket as applied to support a horizontal scafiold timber in a flatwise position between the rungs of a ladder.

In the drawings like letters of reference indicate corresponding parts in each figure.

Referring to Fig. 1, 1 is a vertical ladder. 2 is an adjacent wall. 3 is a horizontal timber designed to be secured at one end to the ladder and to be supported at the opposite end against the wall. In order to secure one end of the timber to the ladder I provide a specially constructed bracket 4 which is in serted between the rungs of the ladder. The bracket 4 comprises a rectangular body 5 having a pair of parallel slots 6 and 7 therein. At one side of the bracket and at one end of the bracket is provided a pair of hook extensions 8 and 9, 10 and 11. The opposite side and end of the bracket is provided with forked extensions 12, 13, 14 and 15. 16 and 17 are clamping screws which are threaded through the outer sides of the brackets so as to hear at their inner ends against the outer face of the horizontal timber 3 inserted in either of the slots 6 or 7. I have shown my bracket inserted between a pair of rungs such as 17' and 18 the hooks 10 and 11 being hooked over the rung 17 and the forks l4 and 15 engaging the rung 18. The outer end of the horizontal timber 3 is inserted in the slot 6 or 7 and clamped therein by the set screw 16. The inner end of the timber 3 is supported by a suitable strut member"19, the upper end of the member being clamped to the inner end of the timber 3 by a bolt 20 and nut 21. Wedge spacing blocks 22 and 23 are inserted between the strut members and timber 3 so as to spread the lower end of the strut members. 24 is a bar connecting the lower end of the strut members together. 25 is a hook bracket designed to engage one of the lower rungs of the ladder,

such hook bracket being provided with a series of books so that the strut may be adjusted to any position and supported on any rung desired.

Referring to Fig. 2, I employ a pair of brackets 27 and 28 similar to the bracket 4, the bracket 27 being secured between the rungs 29 and 30 of the ladder 31 and the bracket 28 being secured between the rungs 32 and 33 of the ladder 34. The horizontal member 35 is secured in the brackets by clamping screws 36 and 37 extending in a similar way as described in connection with the bracket 4. 38 is a brace secured by a suitable bracket 39 to the horizontal scaffold member and at its lower end by a suitable connection 40 to one of the lower rungs of the ladder. The connection 40 includes a threaded end 40 on the brace, a clamp 40 on the brace and a wing nut 40 adapted to tighten the clamp. A similar brace may be supplied to connect the horizontal member with one of the lower rungs of the ladder 34 if desired.

Referring to Fig. 3, I show my bracket applied to support a horizontal timber in a fiatwise position. 41 is a timber. 42 and 43 are ladder rungs between which the bracket 4 is inserted. In this instance the hooks 8 and 9 (see Fig. 1) engage with the rungs 42 and fork members 12 and 13 engage the rung 43.

Although I have shown my device as applied to a ladder it will, of course, be understood that a bracket such as I have described having parallel slots therein may be provided with suitable securing means so that it may be secured to any form of main supporting member, such as a vertical pole or post to Which the bracket may be secured either intermediately of its length or by a suitable means to the top of the post.

From this description it Will be seen that I have devised a very simple device whereby a horizontal scaffold supporting member may be rigidly secured in position so that it may be adjusted to any height desired without providing special supporting timbers for each height to which it is desired to build the scaffold.

As many changes could be made in the above construction and many apparently Widely different embodiments of my invention, Within the scope of the claims, constructed Without departing from the spirit or scope thereof, it is intended that all matter contained in the accompanying specification and drawings shall be interpreted as illustrative and not in a limiting sense.

What I claim as my invention is:

1. In a device of the class described, a scaffold supporting bracket comprising a I rectangular slotted body, hooks and forks formed at opposite ends of the body by extending the side Walls, hooks and forks formed on opposite sides of the body by extending the end Walls of the body, and clamping screws extending through the sides of the body, as and for the purpose specified.

2. I11 a device of the class described, a scaffold supporting bracket comprising a bracket body having a pair of parallel slots therein, hooks extending from one side and one end of the body, forks extending from the opposite side and end of the body, bracing Webs for said forks and hooks and clamping screws extending through the sides of the body, as and for the purpose specified.

3. In a device of the class described, a scaffold supporting bracket comprising a slotted body, hooks extending from one end and one side of the body, forks extending from the opposite end and side of the body, and clamping screws extending through the sides of the body, as and for the purpose specified.

In witness whereof I have hereunto set my hand in the presence of two Witnesses.

JOHN JOYCE THOMAS MAOKLEM.

Witnesses:

RUssnL S. SMART, P. GARRoW.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of ratents.

Washington, D. G.

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