Collapsible sawhorse structure

Claim 1

A collapsible sawhorse structure comprising a pair of linear rigid legs, as a fulcrum support a short rigid bar, pivot pins joining opposite ends of said bar to each of said legs near the top and spaced equally from the upper ends thereof, a locking toggle located between said legs and having two right links of equal length, a pivot connecting the inner ends of said links, a pivot connecting the outer end of each link to its associated leg more than half-way down each leg, said last named pivots being equally spaced from the bottoms of said legs, means limiting the swinging of said links in a direction to spread said legs about said fulcrum pivot pins to a position where said toggle breaks slightly downwardly, each of said legs being a structural metal angle having a first leg extending at right angles to an associated stringer and a second leg extending parallel to said stringer, said pivot pin connections to said legs passing through said first leg, and a series of sharp saw tooth shape biting projections facing inwardly on the upper ends of said first legs above said fulcrum support bar so positioned that, when they have well entered into a stringer, the uppermost end of said second leg firmly engages said stringer and braces an assembled sawhorse against stress endwise of said stringer, said projections embedded in said stringer providing the sole connection between saId legs and said stringer, whereby a wooden stringer may be placed with its opposite ends respectively between the spread upper ends of two of said pairs of legs spaced along said stringer while the lower portions of said legs below said bar are at least partially collapsed, then said lower portions of said legs may be spread about said fulcrum pivot pins until said toggles break slightly downwardly thus causing said biting projection to bite into said wooden stringer to firmly fix the connections of each of said pairs of legs to said stringer. stringer.