US303181A - Oeein osboblsr - Google Patents

Description

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- O. OSBORN.

MASONS AND BUILDERS SGE'POLD. No. 303,181. f Patented Aug. 5,1884.

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' PATENT EErcE'.

ORRIN OSBORN, OF GLOVERSVILLE, NEW YORK.

'MASONS AND BUl-LDERS ySCAFFOLD.

SPECEEICATON forming part of Letters Patent No. 303,181, dated August 5, 1884.

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To @Z whom may concern.: 1

Be it known that I, OERIN OsBoRN, a citizen of the United States, and a resident of Gloversville, in the county of Fulton and State of New York, have invented certain new and Iuseful Improvements in Masons and Builders Scaiiolds; and I do hereby declare that .the following is a full, clear, and exact description of the invention, which will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, which forni a part of this specification, and in which- Figure l is a perspective view of my improved masons and builders scai'i'old. Fig. 2 is a similar view of two of t-he scaffolds `ioined together by the connecting frame or bars, and Fig. 3 is a perspective view of a modiiication of my invention.

Similar letters of reference indicate corresponding parts in all the iigures.

. Myinvention has relation to adjnstablescaffolds for the use of masons, builders, and others; and it consists inthe improved construction and combination of parts of the same, as`

' adjustable scaffold will be readilynnderstood,

will be hereinafter more fully described and claimed.

In the accompanying drawings, A repre sents the horse or lower portion of my im proved adjustable scaiiold, which comprises the crosspiece B, vlegs O, and braces D D D, each of the said legs consisting of a single piece of wood bent or curved outwardly from the point where it is secured to the cross-piece B, the lower portion of the legs being braced apart and held in their operative position by means of the leg-braces D.

E and F represent the extensible portions of my invention, each of the saidportions consisting of a longitudinal crosspiece, E F. having secured at either end the legs E F, which extend parallel to each other, and are provided on one of their faces with a series of teeth, ef, the lower edges or faces of the said teeth being made perfectly straight to adapt them'to engage and interlock with the-metal stirrups G, pivotally secured near the ends of the lower portion or horse, A, and the lower extensible portion, E. The upper face of the teeth e and fare beveled or cut away, as shown in the drawings, in order to admit of the extensible portions E and F being readilyraised to any desired height.

H indicates a removable platform having short downwardlyprojccting legs H, adapted to fit on each Vside of the longitudinal crosspiece F of the upper extensible portion, F, thereby holding the said platform in its operative position.

Y I indicates the connecting-frame, (shown in Fig. 2 of the drawings) which serves to connect two of the scaiiolds together, when, from the character of the work being performed, 'it is necessary to employ more than one scaffold. When a larger scaffold is required, adapted to reach to a considerable height and sustain a heavy burden, the legs of the lower horse are constructed with a second brace, J, While the extensible horses are provided with braces K, adapted. to brace and strengthen their parallel legs, which are then made of ainuch greater length. This construction is illustratedin the modification, Fig. 3 of the drawings.

n Fromthe foregoing description,taken in connection with the accompanying drawings, the construction and operation oi' my improved without requiring further explanation.

It will be seen that my improved scaffold is exceedingly simple in construction, and, being devoid of all complicated parts, is not liable to break or get out of order. It is also exceedingly simple in its operation, and can be' adjusted by any person in a short space of time. The removable platform H affords a broad and Safe support for the operator to stand upon, While the connecting-bars or frame I convert two or more scaffolds into a single scaffold of any desired length. f

Having thus described my invention, I claim and desire to secure by Letters Patent of the United States- 1-. A builders horse consisting of alongitudinal top crosspiece having secured to it at each end legs, each consisting of a single piece of wood or other suitable material curved or bent outward from the point where they are secured to the longitudinal cross-piece, and provided with a suitable brace or cross-piece adapted to hold the lower portion of the legs in their outwardly curved position, as set forth 2. As an improvement in adjustable scat' IOU folds7 the oombination,with the lower horse, A, constructed as described, and provided with the metal pivoted stirrups G, ofthe extensiblelower portion, E, provided with the metal stirrups G, and having its parallel legs provided with a series of teeth cut off straight upon their lower side or face, to adapt them to engage with the metal stirrnps of the lower horse, A, and the upper extensible portion, F, having` its parallel legs provided with a series of teeth out oft` straight upon their lower side or face, to

adapt -them to engage with the metal st irrups G- of the lower extensible portion, E, all oonstruoted and arranged to operate substantially in the manner and for the purpose shown and set forth.y

it 3. As an improvement in seaffolds, the oom- ,binatiom with the lower horse, A, and extensible portions E and F, of the removable platform H, having the short downwardlyprojecting legs H', adapted to hold the platform in its operative position, as set forth.

In testimony that I claim the foregoing as my own I have hereunto affixed my signature in 'j presence of two witnesses.

ORRIN OSBORN.

Witnesses:

SY'LvEsTER BUTLER, NELSON MABEY.

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