US1133878A - Foldable or collapsible adjustable scaffold. - Google Patents

Description

F. J. NAGEL.

FOLDABLB 0R GOLLAPSIBLE ADJUSTABLE SGAFFOLD.

APPLIOATION FILED MAY 29. 1914. RENEWED FEB. 20, 1915.

1,1 33 ,878. Patented Mar. 30, 1915.

2 SHEETS-SHEET l.

THE NORRIS PETERS C(l, FHOTD-LITHQ, WASHINGTON. n. c.

F. J. NAGEL.

FOLDABLE OB. GOLLAPSIBLE ADJUSTABLE SGAFFOLD.

APPLIOATION FILED MAYZQ, 1914. RENEWED FEB. 20, 1915.

1,133,878. Patented Mar. 30, 1915.

2 SHEETS-SHEET 2.

rHE NORRIS PETERS 60.. PHOTG-LITHQ. WASHINGTON, L7. 7v

rrEi) STATES Parana" ICE;

FOLDAIBLE OR COLLAPSIBLE ADJUSTABLE SCAFFOLCD.

Application filed May 29, 1914, Serial No. 841,818. Renewed February 20, 1915.

To all whom it may concern:

Be it known that I, FnnDERioK J. NAGEL, a citizen of the United States, residing at Portville, in the county of Cattaraugus and State of New York, have invented a new and useful Foldable or Collapsible Adjustable Scaffold; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to an improved scaflold easily adaptable'to any pitch of roof, whereby a chimney may be constructed.

An object of the invention is to provide a scaffold, which is not only adjustable, in order to fit or conform to various pitches of roofs, but also collapsible in a small compass, whereby the same may be easily carried or shipped.

Another object of the invention is to provide a scaffold constructed of stock angle iron.

A further object of the invention is to provide a scaffold which is simple and efficient in construction and which may be made very cheaply.

In practical fields the details of construction may necessitate alterations, falling within the scope of What is claimed.

The invention comprises further features and combination of parts, as hereinafter set forth, shown in the drawings and claimed.

In the drawings :Figure 1 is a view in perspective of the improved scaffold constructed in accordance with the invention. Fig. 2 is a side elevation of the scaffold, showing the same adjusted and fitting a roof of a different pitch than that shown in Fig. 1. Fig. 3 is a view showing the scaffold collapsed. Fig. 4 is a front elevation of the scaffold, showing the sides thereof adjusted closer together than that shown in Fig. 1. Fig. 5 is a sectional view on line 55 of Fig. 1. Fig. 6 is a sectional View on line 6-6 of Fig. 1. Fig. 7 is a sectional view on line 7 7 of Fig. 1.

Referring more especially to the drawings, 1 and 2 designate two vertical uprights or bars or beams, angular in cross section. The portions or faces 3 of which at their upper ends are provided with elongated slots 4. Connecting the lower ends of said bars or beams 1 and 2 as at 5 pivotally are the bars 6 and 7, which are arranged to intersect one another as shown. The other Specification of Letters Patent.

Patented Mar. 30, 1915.

Serial No. 9,736.

end-of the bars 6 and 7 are provided with bolts 8, passing through the slots 4 of the bars 1 and 2 and having suitable nuts for adj ustably connecting the bars 6 and 7 to the bars 1 and 2. The side or face 10 of each bar 1 and 2 is provided with a pair of elongated slots 11 and 12, and pivotally connecting the lower end of the side or face 10 as shown at 13 is the lower end of the face or side 14 of an angular bar 15, which bar is designed to conform to the pitch of the roof. The face or side 14 of each bar 15 is provided with an elongated slot 16, and connecting pivotally to the upper end of the bar 15 as shown at 17 is a short angular bar 18, one face or side of which is constructed with an elongated slot 19. The pivots 13 and 17 comprise bolts having nuts 20, and regardless of the pitch of the roof, the bars 1 and 2 and the bars 18 are always adjusted in vertical positions, and the nuts 20 firmly tightened, to hold the said bars 1 and 2 and 18 in their adjusted positions.

Connecting the bars 18 and the upper ends of the bars 1 and 2 are transverse bars 21, which are also angular in cross section. One end of the side or face 22 of each bar 21 is provided with an elongated slot 23, to receive a bolt 24, which also passes through the slot 12 of the face 10 of each of the bars 1 and 2, there being a nut on the bolt 24 to hold said parts in their adjusted positions. The end portion 25 of each bar 21 also has a bolt 26, passing through the slot 19 of the bar 18 provided with a nut, to further hold the bar 21 in adjusted position and horizontally. The usual form of scaffold boards 27 are designed to rest upon the bars 21, and on which the mechanic may stand, in constructing a chimney. Additional bars 28 angular in cross section are provided having elongated slots 29, and passing through the slots 29 and through the slots 11 of the vertical bars or standards 1 and 2 are bolts 30 provided with nuts 31 for holding the bars 28 adjusted in positions relative to the bars 1 and 2. The end portions 32 of the bars 28 have bolts 33 passing through the slots 16 of the bars 15, there being nuts 34 for holding said parts in their adjusted positions. Connected to the bolts 17 are chains 35, having hooks 36 to engage the apex of the roof, for holding the scaffold in position, as shown in Fig. 1.

It will be observed that no matter what pitch the roof may be, the bars 1 and 2 and 18 may be adjusted in vertical positions, and the bars 21 and 28 arranged horizon tally, to hold the scaffold boards. However, it is not absolutely necessary that the bars 1 and 2 and 18 should assume exact vertical positions, for it is possible that the bars 21 and 28 may be arranged horizontally, regardless whether or not the bars 1 and 2 and .18 are in vertical positions. Furthermore, it will be seen upon reference to the drawings that the scaffold may be folded or collapsed l in a very small compass, to be easily carried or shipped.

The invention having been set forth, what is claimed as new and useful is 1. A collapsible roof scaffold comprising a pair of frames constructed of angular bars, each frame comprising a pitch bar, an upright long bar rising from and adjustably pivoted to thelower end of the pitch bar, a short upright bar rising from and adjustably pivoted to the upper end of the pitch bar, a substantially horizontally arranged bar adjustably connecting the pitch bar and the long upright bar, a second substantially horizontally arranged bar adj ustably connecting the short and long upright bars, a pair of links crossing one another, the lower end of each link being pivotally connected to thelower end portion of each long bar, the upper end of each link being pivotally and vertically adjustably connected to the upper portion of each long bar,

whereby said frames may be adjusted and collapsed relative to each other, the arrangebar rising from the upper end of the pitch bar including means whereby it may be adjusted pivotally, a substantially horizontal bar connecting the long and short upright bars including means whereby it may be adjusted vertically, a second substantially horizontally arranged bar connecting the pitch bar and the vertical bar including means whereby it may be adjusted vertically, a pair of links crossing one another, the lower end of each link being connected 'to the lower end portion of each long bar and including means whereby it may be adjusted pivotally, the upper end of each link being connected to the upper portion of the long vertical bars including means whereby said upper end of each link may be adjusted vertically. r

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

FREDERICK J. NAGEL.

WVitnesses L. P. ANTRIM,

E. L. NAGEL.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C.

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