Truss web saw
OwnerJack L. Thorntoninventor
Life of this patent
Estimating the term…
Abstract
A power saw for rapid and repetitive accurate cutting of truss members on predetermined angles to insure tight fitting truss joints. The power saw is cycled vertically in a reciprocating mode and indexed at the limit of its respective up and downstrokes after being set at precise cutting angles. An adjustable saw indexing cylinder permits a wide range of web angle cuts. Workpiece clamps, mounted on a workpiece guide, coact with a web length stop to insure cutting webs of equal length and initiate the substantially automatic reciprocation and indexing of the saw acting on the workpiece.
Claims9
A power saw for automatically cutting truss members, comprising:
- upright frame means having a front;
- ram means including a ram having a double end piston rod vertically mounted on the front of said frame means;
- power saw means including a power driven saw mounted on the depending end of said piston rod for vertical reciprocal movement therewith;
- guide means horizontally mounted on the front of said frame means for holding an intermediate portion of a workpiece in the path of vertical movement of said saw;
- indexing means connected with and operated by said power saw means for automatically turning said power saw means about the vertical axis of said piston rod between predetermined angular limits with respect to the horizontal axis of said guide means at the respective upper and lower limits of movement of said piston rod;
- and,
- control means including valves and tubing connected with a source of fluid pressure for continuously operating said ram means and said indexing means in sequence in response to movement of a workpiece in one direction.
Dependencies are inferred from the claim text.