US659035A - Collapsible trestle. - Google Patents

Description

No. 659,035. Patented 0ct. 2, I900. F. J: ME'SSING.

GOLLAPSIBLE TRESTLE. (Application filed gen! 12, 1900.

(No Model.)

FFICE.

PATENT FERDINAND JOHANN MESSING, OF LAAR, GERMANY.

COLLAPSIBLE TRESTLE.

SPEGIFIGATION formingpart of Letters Patent No. 659,035, dated October 2, 1900.

Application filed February 12, 1900. Serial No. 4,941. (No model-Y To all whom it may concern:

Be it known that I, FERDINAND J OHANN MESSING, painter, a subject of the King of Prussia, Emperor of Germany, residing at 14 Heinrichstrasse, Laar, in the Kingdom of Prussia and Empire of Germany, have invented certain new and useful Improvements 7 in Collapsible Trestles, of which the following is a full, clear, and exact description.

This invention has for its object to provide a new or improved collapsible trestle for supporting table-tops.

One mode of carrying out this invention is illustrated in the annexed drawings, in which- Figure 1 is a side View, and Fig. 2 a side view at right angles to Fig. 1. Fig. 3 is a side view of the trestle when folded up, and Fig. 4 a second side view of same at right angles to Fig. 3. Fig. 5 shows a detail of the trestle on an enlarged scale.

The trestle according to this invention is completely collapsible, in which condition it is shown in Figs. 3 and 4.

The trestle consists of two legs a and b, which stand crosswise when in use and are held together by the horizontal bar 01 in such a manner that they cannot spread farther apart than is necessary. This horizontal bar d is hinged to the log a in order that it ((1) may be laid parallel to a when in the closed position. The bar d is provided with a side slot closed at the bottom by means of a metal plate .2, which likewise is provided with a slot. Through this metal plate a screw 11 passes into the upper end of the leg a, as will be seen from Fig. 5. The plate .2 rests against the screw 2' for the purpose of limiting the spreading of the legs 0; b. The top end of the other trestle-leg bis provided with the pin h, (shown in dotted lines in Fig. 2,) which fits into a suitable hole in the bar (1; The screw 2' and pin it therefore, together with the bar d, secure the trestle against spreading too far apart.

As will be seen from Fig. 1 of the drawings, the two crossed legs a b of the trestle are in a somewhat-slanting position. In order, however, to secure them against toppling over,

he third short stay 0 is provided, the upper end of which may be suitably kept in place by the screw-bolt f, which also joints the two trestle-legs ab in such a manner as to form a movable joint. A wedge-shaped block 9 is secured on one of the legsas, for instance, b-in the manner shown in Figs. 1 and 2 and secures the prop 0 when in the spread or open position, as represented in Fig. 1. A pin g, which is driven into the block g, secures the prop '0 against being swung too far on one side, and therefore when setting up the trestle serves as a stop to indicate the correct position of the prop or stay 0.

When the trestle is to be folded together, the end of the bar d which is shown on the right of Fig. 2 is lifted 05 the pin h, so that the two legs a b of the trestle may be brought from the spread or open position into the closed position, as shown in Fig. 4. Then the bar (1 is also placed longitudinally upon the trestle-leg a in the manner shown in Fig. 5, and, lastly, c is turned round in the direction of the arrowy until it also lies parallel to and alongside of d. a

What I claim, and desire to secure by Letters Patent, is-

1. The combination of the crossed legs a, b, the pivot f on which they turn; the bar at loosely hinged to the top of one leg and detachably connected to the top of the other leg and the stay or prop c hinged to the legs Ct, 19, at their intersection, substantially as set forth.

2. The combination of the crossed legs Ct, 17, the central pivot f on which they turn; the horizontal bar d connected loosely to the top of one leg and detachably to the top of the other; the stay or prop c; the block g spreading the stay from the crossed legs and the stop-pin g for holding the prop c in position, substantially as shown and described.

In witness whereof I subscribe my signature in presence of two witnesses.

FERDINAND J OHANN MESSING.

Witnesses:

F. E. MALLETT, L. BARNES.

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