US835059A - Scaffold. - Google Patents

Description

'l i No. 335,059.y PATENTED Nov. s', 1906.y

' G. GURLBY. soArroLn. PPLITIOI. TILE!) IA! l5, 1900.

' 2 summum- 1.

a 9 o far /lv'vflvron George Curley,

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GEORGE GURLEY, OF SALT LAKE CITY, UTAH.

SCAFFOLD.

. Specification of Letters Patent.

Patented Nov.` 6, 1906.

vApplication filed May 25, 1906. Serial No. 318,771.

To all whom, it may concern/ Be it known that I, GEORGE CURLEY, re-

siding at Salt Lake City, in the county ofA Salt Lake and State of Utah, have invented' certain new and useful Improvements in Scaifolds, of which the following isa specification.

My invention relates to certain new and useful improvements in portable scaffolding, and it more particularly seeks to provide a scaffold of this character of a very simple and effective construction which can be readily adjusted to diHerentv heights, and in its generic nature the invention comprises a plurality of horses or trestles with 'upright pieces boltedon each end, each upright piece having adjustable bolt-holes spaced apart at suitable intervals and one or morecross-bars adjustably held between the u right pieces and secured thereto by means o bolts or pins passing through the bolt-holes of the upright pieces and similar holes in the cross-bars.

In its more detail nature my invention comprises a plurality of horses or trestles each consisting of a transverse bar, a pair of legs bolted thereto at each end, spacing-bars' at the bottom of said legs, and a rectangular frame bolted to said cross-bar and to a second cross-bar secured to the brace-bars of the trestle-legs, said rectangular frame also including a pair of uprights at each side spaced apart and having a plurality of'spaced apertures throughout their length and a cross-bar held between the pair ofuprights at each side and bolted thereto and a plurality of crossbars held between said upri hts and adjustably secured thereto by bo ts or pins, said last-named cross-bars adapted to receive platform, one for use of the mason, one for the use of the laborer, and one to receive the materials used in building operations.

With other objects in view than have heretofore beenenumerated my invention also comprises certain novel construction, combination, and arrangement of parts, all of which will be first described in detail and then specifically pointed out in the appended claims, reference being had to the accompanying drawings, in which- Figure l is a perspective view of my invention. Fig. 2 is a perspective view of one section. Fig. 3 is a vertical cross-section on the line 3 3 of Fig. 4. Fig. 4 is a plan view of my invention. Fig. 5 is a side elevation of Vthe horse or trestle memberfolded up.

Referring now to the accompanying drawings, in which like numerals of reference indicate like parts in all of the figures, it will be seen that l designates a horse or trestle which comprises a horizontal cross-beam l@ and the legs 1b 1b, bolted in pairs, as at lo, to the beam 1a near its ends, and the said legs 1b 1b are secured together in pairs by the brace-bars 1d 1d near the bottom thereof.

2 designates a second cross-beam having notches 2a 2a near its ends to fitover the brace-bars 1d 1d, as clearly shown in Fig. 1.

Bolted to the beams la and 2 by bolts 1 Xy 2 adjacent each pair of legs 1b l? is a pair of vertical standards or supports 3 3 and 4 4, each being provided lwith a series of spaced pin-receiving apertures 3EL 4a for a purpose presently understood. At the top the pairs of standards 3 3 and 4 4 are joined by a crossbrace beam 5m, which is bolted to the standards 3 3 and 4 4 by bolts or pins 3X 4X, as clearly shown in Fig. 1 of the drawings.

5 designates a bracket-beam transversely f and adjustably secured to the standards 3 3 and 4 4 by bolts or pins 5X, which pass through the a ertures 3a 4a to allow of the beam 5 to be a justed u and down the standards.

6 and 7 designate bracket-beams of similar construction to the beam 5, which are likewise secured between the standards 3 3 and 4 4 by pins or bolts 6 and 7 X respectively.

In. practice in carrying out my invention I use two or more sections of supporting devices, and over the projecting ends 5EL 6rL of the bracket-beams 5 6 and the beam 7, respectively, I place platform- boards 8, 9, and 10, the boards 8 serving as a platform for the mason, the boards 9 as a platform for the laborer, and the boards l0 as a latform to receive the material used in building construction.

From the foregoing vit will be readily seen that the various platforms can be readily raised or lowered with res ect to each other and to the ground by Simp y withdrawing the pins 5X, 6X, and 7X and raising or lowering the beams 5, 6, and 7 to the osition desired.

From the foregoing escrip'tion, taken in connection with the accompanying drawings, it is thought the manner in which my invention may be used will be readily understood The same is of an exceedingly-Simple IIO ing a scaffold as shown and described the parts can be readily taken apartand folded up and packed for shipment, occu ying When packed but an exceedingly-smal amount of space. The horse or trestle can be readily folded up, as clearly shown in Fig. 7.

It should be understood that either of the platforms 8, 9, or 10 can be used by themselves, or the platforms 8 and 9 can be used While the platform l() is left off, or the platforms 9 and 10 can be used While the platform 8 is left off, and the platforms 8 and l0 can be used While the platform 9,is left olf, should it be desiredto do so. Again, I may add more bracket cross-beams and use more platforms than-are shown, if desired, and I do not limit myself to the exact details of construction and arrangement of parts herenbefore shown and described.

Having thusl described my invention, what I claim, and desire to secure by Letters Patent, is-

l. In an apparatus of the class described, a trestle comprising a cross-beam, ylegs secured near each end thereof in pairs, cross-braces for each pair of'legs, a second cross-beam having notches to fitv over the cross-braces of the legs, pairs of vertical standards secured to the first and second cross-beams adjacent the trestle-legs, and a brace-bar secured to the vertical standards at their upper ends for the purposes specified.

2. In an apparatus of the class described, a plurality of trestles each comprising a cross beam, legs secured near each end thereof in pairs, a cross-brace for each pair of legs, a second cross-beain having notches to ht over ,the cross-braces of the legs, pairs of vertical standards secured to the first and second crossbeams, one pair near each pair of trestle-legs, bracket-beams adjustably secured between the standards, a bracebar secured to the standards at their upper ends, and platformboards supported by the bracket-beams, substantially as shown and described.

3. In an apparatus of the class described, a plurality of trestles each comprising a cross beam, legs secured near each end thereof in pairs, a cross-brace for each pair of legs, a second cross-beam having notches to fit over the cross-braces of the legs, pairs of vertical standards secured to the first and second crossbeams, one beam near each pair of trestle-legs, bracket-beains adjustably secured between the standards, a brace-bar secured to the standards at their upper ends, and platformboards supported by the bracket-beams, said vertical standards havinor a plurality of apertures spaced apart, bo ts or pins passing through said spacing apertures and said bracket-beams to adjustably secure the bracket-beams to the standards, all being arranged substantially as shown and described` GEORGE CURLEY.

Vitnesses:

W. F. EARLS, ENos HOGE.

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