Adjustable space frame for testing machine

Claim 2

In a load frame having a first platen and a second platen, at least one pair of spaced columns mounted on said first platen adjacent a side edge thereof, said second platen being mounted on said columns and being movable relative to said first platen to a desired position, means to support said second platen on said columns, and a diagonally extending strut means connected to both of said platens at locations on the respective platens displaced in lateral direction relative to the axes of the columns from mounting of the diagonal strut on the other platen, and means to releasably secure said strut means from movement relative to both platens.

Claim 3

The combination of claim 1 wherein said strut is pivotally mounted to one platen adjacent one of said columns, and is mounted to the other platen adjacent the other column in a pair of columns.

Claim 4

The combination as specified in claim 2, wherein said means to releasably secure includes means to clamp at least portions of said strut from sliding movement of said portions relative to one of the platens.

Claim 5

The combination of claim 1 wherein said means to releasably secure comprises hydraulic actuated clamp means to exert a clamping force on said strut means.

Claim 6

The combination of claim 1 wherein said means connecting one end of said strut means to one of said platens includes a member pivotally mounted relative to said one platen, said means to releasably secure clamping said strut means to prevent axial sliding movement of said strut means relative to the means pivotally mounted.

Claim 7

The combination as specified in claim 5 wherein said member comprises a disc like member rotatably mounted in a socket on said one platen.

Claim 8

The combination as specified in claim 6 wherein said strut slides relative to said disc member when the means to releasably clamp are released, said disc member and strut having mating grooved splines extending parallel to the longitudinal direction of said strut whereby additional friction force is provided through said mating spline members.

Claim 9

The combination of claim 5 wherein said member pivotally mounted comprises a sleeve slidably receiving said strut means.

Claim 10

The combination of claim 1 wherein said strut means comprises a strut having first and second telescoping portions, opposite ends of said strut means being pivotally connected to the respective platens, and said means to releasably secure comprising releasable clamp means adjacent the midportions of said strut means.

Claim 11

In combination with a load frame having a base platen, at least a pair of columns adjacent one side surface of said base platen, a second platen mounted on said columns and adjustably supported on said columns relative to said base platen, the improvement comprising a strut having a longitudinal axis, means to mount one end portion of the strut to one of said platens adjacent one of said columns, said strut extending diagonally and laterally toward the other of said platens adjacent the other column, means to guide said diagonal strut for axial sliding movement and to react loads between said strut and the other platen adjacent said other column, and means to clamp said strut against axial sliding movement relative to the means to guide and the other platen.

Claim 12

In combination with a load frame having a base platen, at least a pair of columns adjacent one side surface of said base platen, a second platen mounted on said columns and adjustably supported on said columns relative to said base platen, the improvement comprising a strut having a longitudinal axis, means to mount one end portion of the strut to one of said platens adjacent one of said columns, said strut extending diagonally and laterally toward the other of said platens adjacent the other column, means to guide said diagonal strut for axial sliding movement and to react loads between said strut and the other platen adjacent said other column, and means to clamp said strut against axial sliding movement relative to the means to guide and the other platen.

Claim 13

The combination of claim 10 wherein said platens are substantially the same size, and said strut is mounted on one lateral side and on the exterior of the platens.

Claim 14

The combination of claim 11 wherein said strut comprises two portions slidable relative to each other to permit the strut to be adjusted in length, said means to guide including one of said portions, opposite ends of said strut being pivotally mounted to the base and second platens, respectively, said means to clamp preventing sliding movement of the two portions when clamped.