Van F. Belknap Co., Inc.

E R Thorn

Brent A Thorn

M W Thorn

A belt tensioning tool for tensioning an endless belt that passes around a plurality of spaced apart pulleys with one of the pulleys being mounted for adjustable movement relative to the other pulleys. The belt tensioning tool has as its basic components an actuator assembly including an extensible rod member, a reaction assembly mounted to one end of the actuator assembly, and a slidable assembly mounted to the extensible rod member. The reaction assembly includes a reaction arm member which extends in a cantilevered fashion away from the extensible rod end of the actuator assembly. Similarly, the slidable assembly includes a cantilevered, slidable arm member which is mounted to the extensible rod member and is slidably movable along a track in the reaction arm member. The reaction arm member and slidable arm member include opposed adapter members having pulley engaging ends that extend in opposite directions. Extension and retraction of the rod member results in relative movement between the adapter members on the slidable arm member and reaction arm member for the purpose of spreading a pair of pulleys apart thereby tensioning the endless belt around the pulleys.

Belt tensioning tool

A torque limiting wrench which has a marking mechanism to mark a part that is tightened by the wrench at the instant the intended torque has been applied to the part. The wrench includes an elongated torque applying handle, a cylindrical housing mounted at one end to the torque applying handle, a replaceable part engaging head assembly releasably mounted to the other end of the cylindrical housing, and a part marking mechanism mounted within the cylindrical housing. An on-off valve unit, associated with the torque applying handle, is actuated in response to the desired torque level being reached to operate the marking mechanism by which a mark is applied to the part simultaneously with the interruption of torque transmission. The head assembly is releasably retained to one end of the cylindrical housing such that an operator may simply and conveniently replace any head assembly with another one of a different size or design. Further, the cylindrical housing, which houses the marking mechanism, is positionable at various attitudes relative to the torque applying handle depending upon the location of the part and the available work space.

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Farmington Hills, MI, United States of America

E R Thorn