US1395308A - Staging-support - Google Patents

Description

M. F. SYKES.

STAGING SUPPORT.

APPLICATION, man "n.4, 1'919.

Patented Nov. 1, 1921'.v

' INVENTOR.

BY ATT'0RNEY.

UNITED STATES PATENT QFFKIE.

MARTIN IF. SYKES, OFLAWRENCE, MASSACHUSETTS.

STAGING-SUPPORT.

Application filed April 4,

1 0 all whom it may concern:

Be it known that I, MARTIN F. SYKns, a citizen of the United States, residing at Lawrence, in the county of Essex and State of Massachusetts, have invented certain new and useful Improvements in Staging Supports, of which the following is a specifica tion.

This invention relates to staging supports adapted to be quickly fastened in place on round columns or posts without injuring them. It is arranged so that itcan be adj usted within wide limits and, when substantially adjusted, can be put in place and rigidly clamped so that it will not slip down on a cylindrical column or post.

It is particularly useful for supporting the beams of a staging such as used by plasterers, painters, etc., but may also be used for supporting tackle of various kinds, or as a hanger to which tackle may be attached, for lifting heavy columns, posts, etc.

In the drawing, Figure 1 shows in perspective my device clamped to a column, the column being shown as cut off clean and broken away to more clearly show my device. Fig. 2 is a horizontal sectional view of the clamping member P.

In Fig. l, C represents a column or post which is shown as being round, but it is manifest that my device can be attached to columns which are octagonal, hexagonal, or even rectangular.

In Fig. 1 of the drawings, A represents a rigid vertical base plate which is preferably fiat or slightly curved vertically on the inside. B represents a cross piece which extends'in both directions and is attached to the top thereof in any suitable manner. It may be made integral to the base plate or may be attached thereto by rivets, screws, bolts or brazing.

H is an outwardly extending supporting arm attached to the base plate at the top in any suitable manner. This also may be in tegral with the base plate or may be rigidly fastened thereto by means of rivets, bolts, screws or brazing. It is shown as of such form as to allow the staging carrying beam F to rest comfortably thereon.

As shown in Fig. 1, the ends 7 and 8 of cross piece B are formed like the leaves of a butt hinge, and interlocking therewith are the ends 11 and 21 of the hinged members 12 and 22 which are pivoted thereto by means of Specification of Letters Patent.

Patented Nov. 1, 1921.

1919. Serial No. 287,565.

the headed hingejpins 10 and 20. These hinge pllls may be removable.

The free end of hinged member 22 is shown.

as formed with a slot 24 and like a butt leaf to receive a pin 25, which may be headed or otherwise, and which passes through a suitable pinhole 40 in the end link of a flexible member shown as chain M.

The free end 13 of hinged member 12 is bent outwardly and has an open-ended slot 14.

For the purpose of clamping the device in place, 1 use screw operative tightening means, shown in Fig. 1 as a bolt F, of such size as to pass into slot 14 and carrying a nut 43 by which it may be tightened. Bolt F has a loop 42 through which chain M passes, whereby the flexible member M connects the end of hinged member 22, which may be considered as an extension of one end of cross piece B, with hinged member 12, which may be considered the end or an extension of the other end of cross piece B.

I prefer to use for a flexible member a chain, such as M, having links 6 shaped like a figure 8 which will fit into each other when the free end of the chain is pulled through the loop 42 and doubled back on itself for tightening or loosening, as shown in Fig. 2.

For a clamping member to hold the flexible member M in adjusted position, I show a clamp P having members 50 and 51 with two tightening bolts 52 whereby the doubled chain may be passed through and held in po sition. After being so adjusted, the bolt 1* can be slipped into slot 14 and the whole device rigidly clamped in position by screwing up nut 43.

It will be seen that the flexible member, being attached to the cross piece located at the top of the base plate, when tightened up will hold the parts rigidly in position, and any tendency to slip down is counteracted by the weight of the staging carried by beam F on arm H which projects outwardly and has a tendency to force in toward the column the lower end 5 of the base plate. It will also be seen that when used on the same sizes of columns it is only necessary to loosen up nut 43 very slightly to permit bolt F to be slipped out of slot 14 so that the whole support can be removed and reattached to another column.

If desired, a ring bolt 9 may be attached preferably near the upper part of the base plate, and used as a hanger for staging or for lifting a column to Which my device is clamped while in a horizontal position by or to a cross piece fixed thereto near the top,

adapted to extend around a column or similar support and to connect by means of a screw operative tightening member with the other side of the base plate or cross piece. Preferably, one end of the flexible member should be so attached that the slack can be taken up to fit it roughly to the column which supports it and so that the other end can be quickly tightened and held, thereby clamping the Whole device in place.

I claim:

In a staging support, the combination of a rigid vertical base plate, a cross piece fiXecl' to the top thereof, and an outwardly extending' supporting arm fixed thereto, With a hinged member pivoted at one end of the cross piece, a hinged member having a bent end terminating in an open slot pivoted at the other end of the cross piece, and a flexible member connected at one end to the free end of the first named hinged member and carrying at its other end a bolt of such size as to enter said slot, a nut for said bolt, and means to take up and let out the'flexible member.

In testimony whereof I have afiixed my signature. 7

MARTIN F. SYKES.

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