US1148919A - Roof scaffolding-bracket. - Google Patents

Description

0. NIELSEN.

ROOF SCAFFOLDING BRACKET. APPLICATION FILED sP1.25. 1914.

Patented Aug. 3, 1915.

%a& WWW 19 "one NIELSEN, or THORNTON, Iowa.

' Times SCAFFOLDING-BRACKET.

5 Specification of Letters Patent.

' Application filediiseptember 25, 1914. Serial No. 863,461.

To all whomit mag concern. p j v Be it knownthat I, OLE NnaLsnmcitizen of the United States,residing at Thorn-' ton, in the county of Cerro Gordo and State of Iowa, have invented certain new and useful Improvements in Roof Scaffolding- Brackets; 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 apper tains to make and use the same.

My invention has for its object to pr0- vide an improved roof scaffolding bracket, intended for general use,: but especially adapted for bricklayers in building and repairing chimneys.

To the above end,'generally stated, the in vention consists of the novel construction and arrangement of parts hereinafter described and defined in the claim.

In the accompanying drawings, which illustrate the invention, like characters in dicate like parts throughout the several views.

Referring to the drawings, Figure 1 is an end elevation of a gable roof with a chimney projecting therethrough, having a work platform supported on two sides of said chimney by a pair of the improved scaffolding brackets; Fig. 2 is a side ele' vation of the same; Fig. 3 is a side elevation of one of the improved scaffolding brackets, on an enlarged scale; Fig. 4 is a planview of the brackets shown-in Fig. 3; and Fig. 5 is a side elevation of one of the improved scaffolding brackets, folded. The numeral 1 indicates a gable roof and the numeral 2 indicates a chimney projecting therethrough. A pair of the improved scaffolding brackets straddle the roof 1, on opposite sides of the chimney 2, and support a work platform 3, comprlsing; a mu 1' tiplicity of boards, separated to permit said chimney to project therethrough. These brackets are identical, one with the other, and the detailed description of the one will suffice for the other.

Each scaffolding bracket comprises a horizontal platform-supporting beam, a

pair of diverging legs 5 and struts 6. The.

beam 4 extends transversely of the ridge piece and is provided at its longitudinal center with a V-shaped notch 7. This notch 7 is cut in the under edge of the beam 4 to receive the apex of the ridge piece on which the said beam directly rests. Bolts 8 piv- "otally connect the upper ends'ofthe legs5.

tothe intermediate portion of the beam 4, one on each side of the notch 7. Transversely extended roof-engaging feet 9 are secured to the lower or free ends of the legs, 5. The legs 5 straddle the roof 1 and the outer ends of the beam 4' are supported therefrom by the struts 6. Formed in the lower end portions of the upper longitudinal edges of the legs 5 are semicircular seats 10 in which are seated the semicircular lower ends of the struts. 6. Short links 11, each comprising a pair of laterally spaced metallic straps, pivotally connect the lower ends of the struts 6 to the legs 5 with free dom for angular adjustment toward and from said legs and for folding movement into engagement therewith. To permit the legs 5 to be adjusted so as to fit roofs of different pitch, the upper ends of the struts 6 are adjustably connected to the beam t by bolts 12. These bolts 12 are seated in the outer end portions of the beam 4 and are adapted to be inserted through any one of a multiplicity of longitudinally spaced perforations 13, formed in the upper end portions of said struts. Each bolt 12 is provided with a hand-piece equipped nut 14 for holding the same in position.

Then the scafiolding brackets are not in use, the beam, legs and struts are folded into parallel arrangement, as shown in Fig. 5. In this position of the parts, the bolts 12 are passed through the struts 6 and through perforated cars 15 on the beam 4:, to lock the parts in their folded position.

From the foregoing description it is evident that each scalfolding bracket is selfsupporting on the roof, thus avoiding the use of nails, objectionable on account of the resulting mutilation and leakage of the roof. The bracket can be readily adjusted to fit roofs of different pitch without the use of tools, and, when not in use, may be folded into compact form to facilitate the storing or moving of the same.

The above described device, while extremely simple and of comparatively small cost to manufacture, has in actual usage proven highly efficient for the purpose had 1n view.

What I claim is A self-supporting roof scaffolding bracket, comprising a platform-supporting i I Patented 3,1591'5.

beam, a pair of diverging" legs pivoted to gagementtherewith, and means for 'adjust- 10 r the intermediate portion of said beam and ably connecting said struts to said beam.

having roof-engaging feet, struts having In testimony whereof I afiix my signaone of their:E ends cliemovably rpounec} in ture in presence of tWo Witnesses. seats/in the ree en portions 0 sai e'gs links pivotally connecting said struts to p OLE L said legs with freedom for angular ad- 'Witnesses:

vjustment With respectthereto and for fold: O. P. J ACOBSEN,

ing movement out of said seats into fiat en- L. N; BECK;

Copieis'oi patent inaiy be otitaiiied for five each,' by addressing the Commissioner of ratents,

- Washingto1i,D'. 0'.

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