US 4,563,144 AGranted

Hydraulic block press

OwnerAndrew F. Roseinventor

Life of this patent

Estimating the term…

Loading patent…

Abstract

A hydraulic press for non-refractory material consisting of a rigid framework and a vertically moveable press pad and horizontally moveable box section. A mold cavity is defined within framework and the press pad is contained within. Moveable box section delivers stock to mold cavity, forms cover over mold cavity during manufacture, and ejects formed unit from framework. A hydraulic cylinder is provided for movement of press pad during compression of unit and to raise unit for ejection from framework. A separate hydraulic cylinder is provided for movement of box section through framework. Both cylinders are fixedly connected to the framework. Hydraulic fluid, directed by solenoid-activated valves, provides movement of cylinders. Control means include an electrical circuit using relays, timmer, pressure actuated valve, and mechanical trip switches.

Claims5

Dependent claims

A hydraulic press comprising the combination of:

a frame including two pairs of opposed side members which form a mold cavity and a crown member above said side members, one pair of said opposed side members extending above said mold cavity with said crown member being fixedly supported to the tops of said one pair of opposed side members,
a moveable box section perpendicular to and slidable over the tops of the other pair of said opposed side members,
said box section to supply stock to said mold cavity and to form an upper bearing surface when positioned over mold cavity,
means attached to said box section for moving said box section horizontally over said mold cavity ejecting a compressed shape formed in said mold cavity,
a vertically moveable press pad within said mold cavity,
means on said frame to lower said press pad while said mold cavity is filled from said box section, and
to raise said press pad to compress said stock within said mold cavity between said press pad and said upper bearing surface.

4 more elements

Dependencies are inferred from the claim text.