US652010A - Combined ladder and roof bracket and window-jack. - Google Patents

Description

Pate nted lune I9, 1900. a. K. WHEELER. COMBINED LADDER AND BO OF BRACKET AND WINDOW JACK.

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UNITED STATES PATENT OFFIoE.

GEORGE K. WHEELER, OF HANCOCK, NEW YORK.

CQMBINED LADDER AND ROOF BRACKET AND WlNDOW -JACK.

SPECIFICATTOIT formingpart of Letters Patent No. 652,010, dated J due 19, 1900.

Application filed October 4,1399- To all whom, it rna yconcern-r Be it known that I, GEORGE K. WHEELER, a citizen of the United States, residing at Hancock, in the county of Delaware and State of New York, have invented a new and useful Combined Ladder and Roof Bracket and Window-Jack, of which the following is a specification.

My invention embodies a combined ladder and roof bracket and window-jack, and has for its object the production of a durable, inexpensive, and readily-attachable scaffoldsupport designed to be self-sustained in various positions upon a building or ladder to support scafifolding.

A further object of the invention is to so construct the bracket that its principal parts may be reversed when necessitated by the accidental derangement of duplicated grappling-hooks and to adapt the bracket for employment in a large variety of positions and for support by variously-disposed structures.

Referring to the drawings, Figure 1 is a perspective view illustrating my device employed as a window-jack. Figs. 2 and 3 are similar views illustrating the application of my device as a ladder-bracket. Fig. 4 is'a detail sectional view, on a somewhat-enlarged scale, showing the connection between the member 4 and the contiguous extremities of themember 3 and transverse brace; and Fig. 5 is a similar View illustrating the connection getween the transverse brace and the meme Referring to the numerals of reference, in-

dicating corresponding parts in the several views, 1 indicates a portion of an ordinary window-casing, and 2 the sill.

My bracket, as illustrated, consists of a pair of angularly adjustable supporting members- 3 and 4C, pivotally connected by a wing-screw 5 and retained in their angularly-adjusted positions by an intermediate transverse brace 6, adjustably connected to the members 3 and 4 by wing-screws 7 and 8. The pivotal connection between the members 3 and Ms rendered adjustable longitudinally with respect to either or both of the membersby a series of apertures 9 and 10 in the members 3 and 4:, designed for the reception of the wing-screw 5 when the desired apertures of the members are brought into coincidence at the point Serial No. 732,557. (No modeh) where such pivotal connection is to be established.

It will be noted that the fastenings 7 and 8 at the opposite ends of the transverse brace 6 engage the series of perforations 9- and 10, respectively, with which the fastening 5 also engages, so that the same perforations serve for the adjustment of the angular members and also for the adjustment of the transverse brace.

The supporting member 4 is preferably constructed from two flat strips of steel 11 and 12, riveted together at 13. The end of the memher 4 adjacent to the member 3 is thus bifurcated, in eflect, by the apposition of the strips .11 and 12 for the reception between them of the member 3 and the contiguous extremity of thetransverse brace 6, provided with a series of apertures 14 for the reception of the wing-nut 8, and is bifurcated at its opposite end for the reception of the member 3, upon which, as stated, said brace is adjustable by theengagement of the apertures 9 by the wing-nut 7.

At points adjacent to the rivets 13 the strips 11 and 12are bent at right angles and are then bent into parallel relation to form a pair of angular legs 15 and 16 at a sufiicient distance apart to constitute a broad supporting-base and having terminal recesses 17, formed by the oppositely-curved shanks 18 of oppositely disposed grappling-hooks 19. In this manner the supporting-arm t is providedat the opposite sides or edges of its legs with corresponding parallel grappling-hooks, which. are preferably protected by rubber or other tubular or similarly-formed casings 20. The memher 3, at its end opposite its connection with the member 4, is provided with a terminal recess 21, formed, like the recesses 17, by the curved shanksof oppositely-disposed grap= pling-hooks 22, also protected by suitable casings 20, which protect the woodwork from be-' ing scarred during theuse. of my bracket.

It will be observed that the supportingbase of the member, ,4 is defined by widelyseparated pairs of oppositely-disposed hooks arranged in parallel planes and that the pair of hooks at the end of the member 3 is located in a plane midway between and parallel with the pair of hooks first mentioned.

In use, where my bracket is designed for

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