Slipform with adjustable hopper and trowel means
OwnerTravis W. Binioninventor
Life of this patent
Estimating the term…
Abstract
Smooth and uniform concrete floor or roof sections of channel formation with metal reinforcement are produced by linear movement of a slip form guided by relatively stationary rails which mold the side faces of the channel sections. Skid members which follow the rails also serve to mold the top linear edges of the concrete channel sections. The proper placement of a welded reinforcing grid is achieved by a forward adjustable template and the wall thickness and internal radii of the molded channel are established by a rearward adjustable template. The cooperating templates provide a concrete hopper structure on the slip form.
Claims5
An apparatus for forming structural channel members from moldable material comprising a substantially flat base member, a pair of spaced parallel side rails fixed to the base member and projecting thereabove and forming therewith a trough-like static mold, skids movably engaging the tops of the side rails and adapted to move longitudinally thereon, a hopper secured to the skids and having a lower outlet for moldable material extending between said side rails and adapted to deposit moldable material in said trough-like static mold as said skids and hopper move lengthwise thereof, a forward template on the apparatus including a plate member forming a forward wall of the hopper and an integral sub unit depending from the plate member and projecting between said side rails in closely spaced relation thereto and to said base member and being of approximately rectangular cross sectional shape, said sub unit adapted to maintain the shape of a channel-like reinforcing mesh disposed in the trough-like static mold, means forming a fore and aft guide for the foward template on said hopper, means connected with the forward template to adjust it in the fore and aft directions on the hopper for varying the size of the hopper outlet, and a rear template on the apparatus including a plate member forming the rear wall of the hopper and an integral sub unit depending from the last-named plate member and projecting between said side rails to continuously shape moldable material deposited in said mold from the lower outlet of the hopper as the apparatus travels along said side rails.
A slip form apparatus for use in the formation of molded structural channels comprising a hopper body having a bottom outlet for moldable material, side supporting skids on the hopper body movably engageable with fixed support rails on which the apparatus is adapted to travel, horizontal plate extensions on the hopper body at the elevations of the skids and projecting inwardly thereof to form trowel elements adapted to form smooth faces on the top edges of channels formed by the apparatus, a first forming device on the apparatus near its forward end and projecting below the elevation of the skids and disposed therebetween and extending below the trowel elements and serving to position and stabilize metal reinforcing mesh during movement of the apparatus in one direction, and a second forming device on the apparatus near its other end and disposed between the skids and extending therebelow the trowel elements and adapted during movement of the apparatus to produce smooth interior surfaces on a channel being formed by the apparatus.
Dependencies are inferred from the claim text.