US 4,082,026 A · Portable press

Abstract

A hydraulic cylinder mounted on a frame assembly is communicated with a hand operated pump for actuation thereby. A plurality of punch-die assemblies, to be selectively mounted in the frame assembly for perforating, notching clipping or like operations, each comprise a punch or punches carried by a punch holder constrained to up-and-down motion relative to a die. When placed in the frame assembly, any selected punch-die assembly has its punch holder disposed under a ram connected to the piston of the hydraulic cylinder, so that upon manual activation of the pump, the punch or punches can be forced down to perform a desired operation in cooperation with the die. The punch and die assembly has a presser which urges the workpiece against a lateral side of the punch, and the workpiece can be acted upon at two locations at the same time, one location being directly above the other.

Claims8

Dependent claims

Notching apparatus for use between the bed and ram of a press, comprising:

(a) a base adapted to be supported on the press bed;
(b) a plurality of dies on said base, disposed one above the other;
(c) a punch holder supported on said base for sliding movement and adapted at one end to be driven by the ram;
(d) a plurality of punches on said holder disposed one above the other and each having cutting edge means for cooperating with the die in response to driven movement by the ram, there being means defining a recess beneath each of said cutting edge means receptive of the portion of the workpiece which is to be removed;
and
(e) a workpiece presser adjustably carried on said base at one side of said punch holder, and adapted to engage the workpiece for biasing it in a direction transverse to that of said sliding punch holder movement for urging the workpiece to a fixed position of engagement against a lateral side of at least one of said punches.

3 more elements

Dependencies are inferred from the claim text.

Portable press

Life of this patent

Portable press

Life of this patent

Abstract

Claims8