US2888225A - Combination roof and scaffold bracket - Google Patents

Description

May 26, 1959 c. F. M QUIN 2,888,225

COMBINATION ROOF AND SCAFFOLD BRAC KET Filed Nov. 3, 1954 2 Sheets-Sheet-l INVENTOR CLARENCE F. McQUlN ATTORNEYS May 26, 1959 V c. F. MCQUIN 2,888,225

COMBINATION ROOF AND SCAFFOLD BRACKET Fiied Nov. 3. 1954 2 Sheets-Sheet 2 INVENTOR CLARENCE F. MCQUIN ATTORNEYS United States Patent 2,888,225 COMBINATION ROOF AND SCAFFOLD BRACKET Clarence F. McQuin, Milwaukee, Wis., assignor to Earl J. Cowell, Milwaukee, Wis.

Application November 3, 1954, Serial No. 466,591

1 Claim. (Cl. 248-237) This invention appertains to roof and scaffold brackets and more particularly to a novel bracket for supporting a working platform, which can be quickly adjusted and attached to roofs of various pitches.

One of the primary objects of my invention is to provide a roof bracket embodying a supporting arm for receiving and holding a board or work platform in a horizontal plane with novel roof engaging feet and means for adjusting the supporting arm on the feet to the horizontal position irrespective of the angle or pitch of the roof.

Another salient object of my invention is the provision of novel stirrups or clamps associated with the feet for engaging the uprights of a scaffold or the rails of a ladder at any desired point for holding the bracket securely in place and the supporting platform in a desired position.

A further important object of my invention is the provision of a bracket of the above character, which will be durable and eflicient in use, one that will be simple and easy to manufacture and one which can be placed upon the market at a reasonable cost.

With these and other objects in view, the invention consists in the novel construction, arrangement and formation of parts, as will be hereinafter more specifically described and claimed, and illustrated in the accompanying drawings, in which drawings,

Figure 1 is a side elevational view of one of my brackets attached to a roof, parts of the view being shown broken away and in section;

Figure 2 is a top plan view of the bracket with parts thereof broken away and in section to illustrate structural detail;

Figure 3 is a view similar to Figure l; but showing the bracket in use on the upright of a scaffold;

Figure 4 is a vertical sectional view taken on the line 44 of Figure 3, looking in the direction of the arrows;

Figure 5 is a detail horizontal sectional view taken on the line 55 of Figure 3, looking in the direction of the arrows and illustrating the upper stirrup or clamp, and

Figure 6 is a detail horizontal sectional view taken on the line 66 of Figure 3, looking in the direction of the arrows and illustrating the lower stirrup or clamp.

Referring to the drawings in detail, wherein similar reference characters designate corresponding parts throughout the several views, the letter B generally indicates my improved bracket and the same embodies a lower U-shaped clamp or stirrup 10 and a similar upper U-shaped clamp or stirrup 11. The clamps extend in opposite directions so that the same will embrace the opposite sides of an upright 12 or the like of a scaffold or the rail of a ladder. (see Figs. 3 to 6, inclusive). The upper and lower clamps are connected together by a strap 13 and this strap maintains the stirrups or clamps 10 and 11 in a desired spaced relation. Rigidly secured to the bight portion of the upper clamp 11, such as by welding or the like, is an elongated face plate 14 having spaced openings 15 therein for a purpose which will later appear. The opposite sides of the lower clamp or stirrup 10 have pivotally secured thereto by means of pivot bolts 16 and 17 angle shaped roof engaging feet 18 and 19, the purpose of which will hereinafter more fully appear. The pivot bolt 16 is utilized to connect the lower end of the strap 13 with the lower stirrup or clamp 10 and this bolt is also employed for another purpose, as will now be described.

Pivotally mounted upon a pivot bolt 20 carried by one arm of the upper clamp 11 is a main supporting arm 21, and this arm 21 can be connected to the clamp 11 by the same bolt employed for securing the upper end of the strap 13 to said clamp. The arm 21 constitutes a support for a board or platform and is preferably constructed from angle iron to provide a horizontally disposed flange 22 and a depending vertically disposed flange 23. The outer end of the flange 22 is bent up to provide a right angularly extending stop 24 for the board or platform placed upon the supporting arm. The vertically extending flange 23 is provided with a longitudinally extending slot 25 and the upper edge of this slot is provided with a series of equidistantly spaced holding teeth 26. Slidably mounted within the slot is the shank of a winged screw 27 and this screw is threaded into the upper end of a supporting link 28. The lower end of the link is rockably mounted upon the bolt 16 heretofore mentioned. The link 28 engages one side of the flange 23 and the other side of the flange is engaged by a clamp washer 29 through which the shank of the screw 27 extends. The screw 27 constitutes a latch and can be slid along the slot 25 to any desired position and when this position is reached the screw is placed in engagement with a desired tooth 26. At this time, the screw 27 can be adjusted so as to firmly bind the link 28 and the washer 29 against the flange 23 of the arm 21 to hold the same in a desired adjusted position.

My bracket is particularly useful in supporting platforms and the like on roofs of different pitches and in Figure l, I have shown the bracket in place on a roof. As clearly shown in this figure, the feet 18 and 19 are placed against the roof as is the face plate 14 and nails are driven into the roof through the openings 15 for holding the bracket against sliding movement on the roof. The supporting arm 21 is now swung to its horizontal position on its bolt 20 and the latch link 28 is utilized to support the arm 21 in its correct horizontal position. Due to the mounting of the feet 18 and 19 and the arm 21, the bracket can be readily associated with roofs of different pitches and the arm 21 can instantly be adjusted to the horizontal position.

When the bracket is utilized on the side rail of a ladder or on the upright 12 of a scaffold, the stirrups 10 and 11 are placed around the opposite sides of the upright or rail as heretofore intimated, and as best shown in Figures 3 to 6. When the stirrups are placed at the desired point on an upright, the bracket is held against slipping by the use of a winged screw 30 threaded into the strap 13 and this winged screw can be adjusted on the strap against the upright or ladder rail, as the case may be. If desired, nails or screws can also be placed through the openings 15 into the upright or rail. Obviously, the feet 18 and 19 do not come into play when the bracket is used on a scaffold or ladder. The arm 21 is swung on its bolt 20 and is held in its correct position by the latch link 28.

Various changes in details may be made without departing from the spirit or the scope of this invention, but what I claim as new is:

A bracket comprising a pair of stirrups, a strap connecting said stirrups together in spaced relation to form a base, said strap being pivoted at each end to said 3 4i stirrups, an upwardly extending fiat face plate carried spaced from the stirrup carrying the face plate for holding by one stirrup adapted to engage and lie flat against said arm in an operative platform supporting position. a roof, pivoted feet carried by the opposite sides of the other stirrup, said feet adapted to be adjusted to lie in References Cited in the file of this Pawnt the same plane as said face plate and to engage a roof 5 UNITED STATES PATENTS at a point spaced from sald face plate, a platform supporting arm pivotally secured to the stirrup carrying the 1,087,603 Nellis Feb. 17, 1914 face plate and extending rearwardly therefrom, and a 1,143, 78 WinanS June 22, 1915 latch and supporting link pivotally carried by the stirrup 1,646,923 Martens Oct. 25, 1927 having the feet adjustably engaging the arm at a point 10 1,827,49 Spillmfln Oct. 13, 1931

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