US1569951A - Scaffold anchor - Google Patents

Description

Jun. 19 ,1926.

lSCAPFOLD ANCHOR Filed August 28, 1925 7 P Coo/Oef'.

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Patented Jan. 19, 1926.

PAiUL E. COOPER, OF SOMERVILLE, OHIO;

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Application lledT August 28, 1925. Serial No. 53,1479.

Tov @ZZ whom it concern:

i Be it known thatA I, PAUL E. COOPER, a citizen off the United States, residing at Somerville, in the county of Butler and Statelof Ohio,. have invented certain new and useful Improvements in scaffold Anchors, ofl which the following is a spec`ification.

This invention relates `to a ldevice by means of which a scaffold may be suspended from a roof and one objectof` the invention is to provide an anchor adapted to be mounted in irm gripping engagement with the seams of a metal roof and engaged by a hanger bar from which `a scaffold is suspended.

Another object of the invention is to so mount the jaws of the anchor that they may be easily placed in position for gripping opposite sides of a roof seam and then readily forced to a gripping position and 4securely held. i

Another object of the invention is to form the jaws with abutments adapted to extend in overlapping relation to. the hanger bar of the. scaitold. and: prevent danger of the hanger bar` accidentally moving upwardly out of engagement with the. anchors when in use.v j

Another object of the invention is to provide improved means for moving the jaws into gripping engagement with. the` roof seam andi to so construct the jaw moving means that said` means may be readily moved into or out of position to lock the jaws but not be liable to accidentally move to; a releasing position.`

This invention is illustrated in the accompanying drawing, wherein- Figure 1 isa perspective view illustrating ascaffold supported from` a rooby `means of the improved anchors;`

Fig. 2 is a vertical sectional view taken be tween the j awsof one of the anchors.;

Fig; 3 is avertical sectional view through an anchor, the view being taken on the line 3-3 of Fig. 2; .i j

Fig` t is a view showing thel anchor in front elevation, and

Fig.` 5 isa sectional view taken on the line 5 5 of Fig. l.`

`When painting a barn or other building, suolil as shown in Fig'. 1 and indicated,y in general by the numeral 1, it is necessary for the painter to stand upon a scaffold 2 suspended from the roof of the building` At the present time it is customary to engage the grap#V ples 3 ofthe scatfold with the ridge portion ofthe roof or employ auxiliary ropes which are anchored in a suitable manner to the eaves at the opposite side of the building and* led over the ridge of the roof for engagement by the grapples. These methods have been found inconvenient and unsafe as it is often diicult to properly engage the grap- 65 ples with the ridge of the roof orproper y secure the auxiliary ropes to the eaves of the j building. In order to overcome theseJ objections, I have developed anchors which are indlcated 1n generalA by the numeral 4 and` 70 are adapted to have firm gripping engagement with selected seams 5 ot the roof and support a hanger bar 6 with which the grapples 3 will engage. The anchors 4 are of a duplicate constructionand each. formed as shown in Figs. 2 through 5.

Referring to these figures, it will be seen 4 that each of the anchors includes jaws 7 which are formed of brass or other strong metal and are preferably triangular in 3 cient height to permit te prongs orlugs 95 9 to extend in overlapping rela-tion to the upper edge face of the hanger bar 6. The hanger bar 6 is preferably a two by four and may be otany length desired. It will thereforebe seen that when the anchos, are

put in place with the lugs extending in overlapping relation toJ the upper edge face of the hanger bar and the jaws, firmly gripped to the seams, the hanger bar will be securely supported andcannot move upwardly and slip over the upper ends of the` anchors. T oothed flanges 1l` extend inwardly along the lower edges of the jaws with the teeth of one flange fitting between the teethof the other flange, as. shown i-n Fig. 5, and

adapted to bite into` the seam, gri (Jped between the jaws. and very firmly old the anchor in place. One of the jaws hasalso been formed with a pin` or lugl extension 12 adapted to engage one side of a .seam and 105 under sufficient pressure force the seam into an opening 13 formed in the companion jaw. While one lug 12 and opening 13 have beenillustrated, it will be understood that others may be provided if found desirable.

The jaws are to be mountedfor tilting movement towards and away froml each other and, therefore, there has been provided a pin 111 which extends between the jaws, as shown in Figs. 3 and 4, with its end portions passed through openings 15 and ormed with heads 16 so that the jaws are firmly held in engagement with the pin and prevented from being forced from the ends thereof when pressure is exerted to move the lower edge portions of the jaws into gripping engagement with the roof seam. The actuating device by means of which the jaws are forced to a gripping position consists of a lever handle 17 disi posed between the jaws and at its inner end formed with a bearing extension 1S having an opening 19 to loosely receive the pin and mount the lever or handle for swinging movement from a substantially vertical position such as shown in Fig. 4; to a horizontal position as shown in Fig. A side arm 20 extends from the pivoted end of the lever and carries a wedging head 21 tapered towards one end from opposite sides, asv

shown in Figs. 3 and el. From an inspection of Fig. 4, it will be readily seen that when the lever is disposed vertically with the head extended beyond the forward edges S of the jaws the jaws may be tilted toward and away from each other upon the pin 14. The upper ends of the jaws may, therefore, be moved toward each other to spread the lower end portions a sufficient distance to permit the jaws to be disposed upon opposite sides of the root seam. Then so dis posed, the handle 17 is swung downwardly towards the position shown in Fig. 2 and as it swings downwardly the head 21 is swung upwardly andy moved `inwardly between the upper end portions of the jaws. As the head moves between the jaws, it exerts a cam action and serves to swing the upper end portions of the jaws apart and move the lower edges into very tight gripping engagement with the roof seam. As long as the head is disposed between the upper end portions of the jaws, they cannot return to the releasing position and, therefore, there is no danger of the anchor accidentally moving out of engagement with the roof seam. Beveled faces 22 are formed along the forward edges of the jaws in order to permit the wedge to be readily forced inwardly between them.

There has, therefore, been produced an anchor which may be easily and quickly secured to a roof and serves to very firmly support a hanger bar to be engaged by a grapple of a scaffold. At the same time the anchor ma)T be readily released when so desired but is not liable to accidentally slip loose.

Having thus described the invention. f claim:

1. A scaffold anchor comprising vertically disposed coacting jaws for engagement with opposite sides of a roof seam and adapted to support a hanger bar, fingers extending forwardly from said jaws to overlap the upper edge of the hanger bar and prevent upward movement of the bar out of engagement with the anchor, and means for moving said jaws towards each other and retaining them in tight gripping engagement with a 'roof seam.

2. A scaffold anchor comprising reacting jaws for engagement with opposite sides of a roof seam and adapted to support a hanger bar, a pin passed transversely through said jaws intermediate their upper and lowcr ends and mounting the jaws for tilting towards and away from each other, and operating means carried by said pin and adapted to engage one of the aws and move the jaws into gripping engagement with the roof seam.

3. A scaffold anchor comprising coacting jaws for engagement with opposite sides of a roof seam and adapted to support a hanger bar, a pin passed transversely through said jaws nterinediate their upper and lower ends and mounting the jaws `tor tilting towards and away from each other, and operating means mounted between said jaws and including means to force their upper end portions away from each other and cause their lower edge portions to be moved into tight rgripping engagement with the roof seam.

4. A scaffold anchor comprising enacting jaws for engagement with opposite sides of a root scam and adapted to support a hanger bar, a pin passed transversely through said jaws intermediate their upper and lower ends and mounting the jaws for tilting towards and away 'from each other, and operating means pivotally mounted upon said pin between the jaws and including a cam portion adapted to le forced between the upper portions of the jaws and tilt the jaws longitudinally of the pin to move their lower edge portions towards each other for tight gripping engagement with the roof seam.

5. A scaffold anchor comprising enacting jaws for engagement with opposite sides of a roof seam and adapted to support a hanger bar, a pin passed transversely through said jaws intermediate their upper and lower ends and mounting the jaws for tilting towards and away from each other, operating means including a handle portion pivotally mounted at one end upon said pin between the jaws and extending outward from thc jaws, a side arm extending from the pivoted end of said handle and of a length to extend beyond the forward edges of the jaws when the handle is disposed upwardly, and a wedging head at the outer end of said side arm adapted to be forced inwardly between the upper portions ofthe jaws when the handle is swung downwardly and tilt the jaws to move their lowei' edge portions into tight gripping engagement with the roof seam.

6. A scaffold anchor comprising coacting jaws for engagement with opposite sides of a roof seam, a pin pvotally mounting the jaws for tilting towards and away from each other into and out of a gripping position, and an operating member carried by said pin between the jaws and including means for engaging one of the jaws and moving the jaws to a gripping position.

7. A scaffold anchor comprising coacting jaws for engagement with opposite sides of a roof seam, a pin pivotally mounting the jaws for tilting towards and away from each other into and out of a gripping position, and an actuating member carried by said pinand adapted to engage one of the jaws and move the jaws to a gripping position.

In testimony whereof I aix my signature.

PAUL E. COOPER. [L sj

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