US 4,066,237 A · Adjustable form stake assembly

Abstract

A form stake assembly for adjustably holding a concrete form at a prescribed grade. It includes a pointed stake that has an elongated slot slidably receiving the shank of a carriage bolt. The headed end of the bolt abuts one side of the stake. The bolt shank receives a wing nut on the other side of the stake. The wing nut may be selectively tightened to clamp the bolt against the stake or loosened to enable sliding movement of the bolt within the confines of the longitudinal slot. The bolt includes a central bore extending through the shank and head to receive the shank of a nail. The nail is utilized to secure a concrete form member to the carriage bolt and wing nut assembly. A tie rod is included that may extend between opposed stakes on opposite sides of the form area. The tie rod includes a headed end and a free end. The headed end abuts one side of one stake while the shank extends through the slots of both stakes to receive a slidable collar. A set screw is provided on the collar to lock the collar in abutment with the associated stake and thereby hold the form members together against the weight of wet concrete received therebetween.

Claims6

Dependent claims

An adjustable form support stake assembly, comprising:

an elongated stake having opposed sides and a point at a lower end and a striking surface at an upper end;
an elongated slot formed through the stake and extending longitudinally therein from an upper slot end adjacent the striking surface to a lower slot end upwardly spaced from the stake point;
a carriage bolt having a headed end of larger dimension than the width of the slot for abutment with one side of the stake and a threaded shank slidably received by and projecting through the slot to a free end outwardly adjacent to the stake;
open bore means extending through the carriage bolt from the free shank end to the headed end for receiving the shank of a nail;
and
a nut threadably mounted to the free end of the threaded shank for abutment with the remaining side of the stake to selectively clamp the carriage bolt securely to the stake.

3 more elements

An adjustable form support stake assembly, comprising:

a pair of elongated stakes each having opposed sides and a point at a lower end and a striking surface at an upper end;
an elongated slot formed through each stake and extending longitudinally therein from an upper slot end adjacent the striking surface to a lower slot end upwardly spaced from the point;
a pair of carriage bolts having headed ends of larger dimension than the widths of the slots for abutment with one side of a stake and threaded shanks slidably received within the respective slots and projecting through the slots to free ends outwardly adjacent the respective stakes;
open bore means extending through each carriage bolt from the free shank end to the headed end for receiving the shank of a nail;
a nut threadably mounted to each free end of the threaded shanks for abutment with the remaining side of a stake to selectively clamp the respective carriage bolts securely to their associated stakes;
an elongated tie rod having a headed end of dimension larger than the width of the stake slots and an elongated shank of smaller cross-sectional dimension than the stake slots, said tie rod connecting the stakes together with the headed rod end thereof engaged against one stake and with the shank of the tie rod protruding through the slots of the two stakes;
a collar having a radial dimension larger than the stake slot width, said collar being slidably received on the tie rod shank in engagement with the remaining stake;
and
a set screw threadably mounted by the collar, adapted to engage the shank of the tie rod to selectively lock the collar on the tie rod shank in abutment with said remaining stake.

6 more elements

Dependencies are inferred from the claim text.

Adjustable form stake assembly

Life of this patent

Adjustable form stake assembly

Life of this patent

Abstract

Claims6