US386218A

US386218A - Reversible trestle

Info

Publication number: US386218A
Authority: US
Publication date: 1888-07-17
Anticipated expiration: 1905-07-17

Description

(No Model.) 8 2 SheetsSheet 1. W. H. PHILLIPS.

REVERSIBLE TRESTLE.

No. 386,218. Patented July 17, 1888.

(No Model.) 2 Sheets-Sheet 2.

W. H'. PHILLIPS.

REVERSIBLE TRESTLE. No. 386,218. Patented July 17, 1888.

NTTnn STATES IVILLIAM II. PHILLIPS, OF LINCOLN, NEBRASKA.

REVERSIBLE TRESTLE.

SPECIFICATION forming part of Letters Patent No. 386,218, dated July 17, 1888.

Application filed November 10, 1887. Serial No. 254,853. (No model.)

To aZZ whom it may concern:

Be it known that I, YVILLLUI H. PnILLIrs, a citizen of the United States, residing at Lincoln, Lancaster county, in the State of Nobraska, have invented a new and useful Reversible Trestle, of which the following is a specification.

This invention has relation to improvements in trestles, and is adapted to be employed in connection with scaflolds and the like to be used by mechanics or other persons using trestles or scaffolds; and it consistsin the peculiar and novel combination and arrangement of parts, all substantially as hereinafter pointed out in the claim.

The invention will be very readily under stood from the following description and claim when taken in connection with the annexed drawings, in which Figure 1 is a perspective view of my improved trestle, showing the same in a closed position. Fig. 2 is a similar view of the trestle, showing the top elevation or beam in a reversed position and placed crosswise or at right angles to the trestle proper. Fig. 3 is a like view of the trestle, showing the top elevation orbeam regularly reversed and the slide-legs somewhat elevated. Fig. 4 is a similar view of the trestle, showing the same partially elevated by means of the slide-legs and pins in the top elevation or beam, 0. Fig. 5 is a detail perspective view of the extension-leg N, and Fig. (Sis a similar view of one of the bindjug-bolts and tail-nuts.

Similar letters of reference refer to similar parts throughout the several figures.

A designates the top timber or beam of the trestle proper, which may be used as such-without the employment of the auxiliary partsviz.,the swing-beam B, the collar beam or stay 0, and the reversible bars D D, attached to the said collar beam or stay 0; and the said bars D D may remain in place, as shown in Figs. 2 and 3, or may be reversed to assume a position at right angles to or crosswise the collar beam 0, as shown in Fig. 4, when it is necessary in order to support a board to stand upon, or for other purposes. The slides E E, to which is attached the collar-beam C, may be elevated and held in place by the iron pins M M; or they may be reversed, as shown in Figs. 2 and 3, and the small chains P P remain fastened to collar beam or stay 0 in all positions, and to which the iron pins M M are adapted to be attached.

The swing-beam B can remain in place, as shown in Figs. 3and4; or it may be placed crosswise, as shown in Fig. 2, for the purpose of being used in extremely narrow hallways, stairways, &c.

FF design ate the mai 11 legs or supports of the trestle, which are firmly and securely attached to the top or main beam A by means of bolts or otherwise; and for the purpose of insuring strength I may employ suitable iron braces, O O,adapted to be placed at an angle of forty-five degrees and securely fastened at their ends to the supportsFFand the top or main beam A, as clearly shown in the drawings.

G G are the slide-legs of the trestlc,by means of which the said trestle may be elevated or lowered at will, and in either case they are held in place at any desired point by means of bolts and tail-screws, as shown. These slidelegs are also used for the purpose of leveling the trestle 011 uneven surfaces, and especially in stairways, as by their use some of the legs may be lengthened and shortened or otherwise, thus securing a solid standing for the said trestle irrespective of the surface upon which it stands, whether it be an uneven surface, stairway, or other place.

H H designate steps by means of which the trestle may be very readily and easily ascended or descended, as clearly shown in Figs. 2, 3, and 4 of the drawings.

I (shown in Fig. 3) is a supplementary step that may be detached from a cross bar or brace K and attached to a slide-leg G, which latter are extended, thus forming a series of steps from the bottom of said trestle. This crossbrace K is preferably constructed of wood,aud

4.) These bolts and tail-screws are for the purpose of holding the sliding legs G G firmly in place.

N designates an extra extension-leg, which may be attached to the bottom ofa sliding leg, G, to serve a third extension. This leg N is employed when an extension is desired above that reached by the full extension of the slides E E and legs G. This third extension may be I a crossbar, two rectangular and perforated used upon all thelegs on even surfaees,or upon arms extending therefrom, and two pivoted a suitable number of thennas in stairways.&c. arms adapted to fold upon" the said cross-bar,

It will be observed that the iron bolts M M in combination with a trestlehaving its cross- 5 are secured to the wing-beam B by the small bar perforated, substantially as specified.

chains P P, thus preventing them from being lost or misplaced WILLIAM H. PHILLIPS.

Having described myinvention, whatIclaim \Vitnesses:

1s 0. P. PARKER, IO The extension frame or trestle consisting of W. M. WOODW'ARD.