US266658A - Trestle - Google Patents

Description

(No Model.) 2 Sheets-Sheet', 1.

D. E. TEAL.

TRESTLE.

No. 266,658. Patented 0615.31, 1882.

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DANIEL E. TEAL, 0F ONEIDA CASTLE, NET YORK.

TRESTLE.

SPECIFICATION forming part of Letters Patent No. 266,658, dated October 31, 1882.

Application tiled April 27, 1882. (No model.)

To alt whom 'it may concern.- n

Be it known that I, DANIEL E. TEAL, of Oneida Castle, in the county ot' Oneida, in the State of New York, have invented new and useful Improvements iu Trestles, of which the following, taken in connection with the aecompanying drawings, is a full, clear, and eXact description.

This invention relates to a novel construction of trestle-work designed more particularly for supporting temporary tracks during the buildingof embankments,and for temporarily replacing damaged or broken-down or washedout trestles.

rIhe invention consists essentiallyin a knockdown trestle-bent composed ot' posts provided with straps or tie-rods adapted to be set at various heights on the posts, and a cross-beam extended from post to post and supported by the adjustable straps of the posts, the whole being arranged to be readily taken apart and moved about, and as readily united, and when united form a substantial, yetsimpleand cheap trestle.

The invention also consists inanovel means of bracing longitudinally a series ot' the aforesaid kuockdown trestle-bents, and in devices for detach ably connecting therewith the trackstringer, all as hereinafter more t'ul ly explained,

and specifically set forth in the claims.

In the accompanying drawings, Figure 1 is a side elevation ot' my invention; Fig. 2, an end view of the same; Fig. 3, a plan view, and Fig. et a detail view ofthe componentparts of a trestle-bent.

Similar letters of reference indicate corresponding parts.

A A representthe two posts ot' my improved trestle-bent, said posts being provided at their outer faces with a series ot' shoulders or notches, a a, arranged at ditt'erent heights or different points in the length ot' the post.

B is the cross-beam, extended from post to post, and used in lieu of the usual cap-piece of ordinary trestles, said cross-beam consisting of a plain stick ot' timber devoid of the usual tenons on its ends for connection with the post. Its under side is provided with a notch or Y shoulder, a, near each end, for the reception the notches a ot' the post', and supports by its lower end the beam B, said strap being formed of an endless band of flat bar-iron, so as to obtaina broad bearingon the shoulders or notches a a. It embraces the sides of the post and beam, and thus et't'ectually maintains the sides of said parts in line with each other.

C U are two braces secured to the underside of the central portion of the beam B, the outer end of said braces having a plain face in line with the end face ofthe beam. The under side of said end of the brace is provided with a shoulder or notch, a', similar to that ot the beam, and another strap, c, like that which supports the beam, is hung in one of the notches (t ot' the post and engages the notch of the brace, and thus supports the same. It will be observed that by this arrangement the two straps c c are the sole means ot' supporting the beam B and brace U and of uniting the same with the post A, and thatsaid sustaining-straps draw the parts together with increased force as the weight is applied to the beams B. When a series of the described trestle-bents are employed they are braced longitudinally by means ot straps or iiat bars fj', provided on theirends with eyes g, by which they are detachably connected to stud-bolts h h, secured to the outer side of the posts A, said bolts passing through the eye of the straps f, and being provided with a nut, i, over thestrap,to confine thesame in its position. rlhe straps are arranged diagonally from post to post, so as to properly brace the successive bents.

K is a plate interposed between the ends ot' the straps fand the face ot' the post to which they are connected, said plate extending from bolt to bolt, lt, and overthe notches a, in which are hung the straps c, and thereby serving both as a washer under the straps j' and as a guard to retain the strap e in thenotchaof the post when the latter-is detached from the beam B and brace G. Very high trestles .I provide with additional braces in the form ot' rods m, having their ends a bent at right angles and inserted each iu one of a series ot" holes, l, in the sides ot' the posts, as shown, said rods being disposed diagonally in the usual manner of ordinary braces. rlhe posts A A are provided on their lower extremity with a dowelpin, @,which enters a hole,d, in a longitudinal sill, s, placed under the foot of the posts, as shown in Fig. l of the drawings.

D D represent the trackstringers,laid upon the beam B, the two outer stringers being placed close to the posts and detachably secured in their position by a clip or shoe, o, on the side of the respective stringere, said clip being provided with flanges p, which engage opposite sides ofthe post, the stringers being held against the inner face of the post by means of stays min the form of metal bars, pivoted on top of the beam B, and having on its end an upturned shoulder, by which it bears against the inner side of the track-Stringer.

rlhe described construction and combination of parts constitutesaknock-down trestle which is readily erected on most any ground, and when erected is as strong and durable as any wooden trcstle, and with less consumption of timber.

The cross-beams B are trussed or braced for the express purpose of settingtheposts of each bent a sufficient distance apart to allow the bent to stride the embankment in process of construction, and over which said trcstle isdesigned to support a temporary track. The posts coming near the foot ofthe slope of the embankment prevents their being buried any considerable depth, and thus allows the trestle-bents to be readily moved forward as the embankment progresses.

Heretoi'ore all temporary trestles used for the purpose aforesaid were buried and left in the embankment, thereby not only incurring the waste of said trestles, but also impairing the solidity ot' the embankment by the decay of the embedded trestle.

Having described my invention,what Iclaim 1s- '1. The combination of the postsA, provided at their outer side with notches a a at various points ot' their height, the cross-beam B and braces C, provided respectively at their under side with the notch a', and the straps c c, hooked in two ofthe notches of the post and in the notch of the cross-beam and its brace, respectively, substantially as described and shown.

2. The combination of the sill's, provided with the holes d, the posts A, provided with dowels e and with notches or shoulders a a, the cross-beam B and braces C, provided with notches or shoulders a c, and the removable straps c c. embracing the post and the crossbeam and its brace, and adapted-to engage the shoulders thereof, substantially as shown and set forth.

3. The combination ofthe posts A, provided with notches a a,the beam B, and brace G, provided respectively with the notch a', the adjustable straps c c, engaged with said notches, the plate K, placed over the notches of the post, the metal straps ff, provided with eyes g, and the bolts h h, connecting said plate and straps detachably on the post,substantially as described and shown.

4. In combination with the posts A and cross-beam B, the track-stringer D, having on its side the clip or shoe 0, .with iianges p, e11- gaging opposite sides of the post, and the stay r, adjustably connected to the beam B, substantially in the manner shown and described, for the purpose set forth.

In testimony whereofI have hereunto signed my name and affixed my seal, in the presence of two attesting witnesses,at Syracuse, in the county of Onondaga, in the State ot' New York,

this 25th day of April, 1882.

DANIEL E. TEAL. Witnesses:

C. H. DUELL, WM. C. RAYMOND.

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