Apparatus for avoiding play in the drive of a circular saw
AssigneeGustav Wagner Maschinenfabrik
InventorGerhard Kaiser
Life of this patent
Estimating the term…
Abstract
In circular saws, especially of the so-called cold type, for steel and nonferrous metals, there is a certain play in the gear drive or power transmission between the prime mover such as an electric motor and the saw blade proper. Especially during the start and during the completion of a sawing operation such play causes a temporary stopping of the blade. To avoid such play a brake mechanism with blade engaging brake shoes is provided which is energized and de-energized in response to the current consumption of the electric saw drive motor or in response to position responsive switch means, whereby the brake is effective during the start and during the stopping of the saw blade.
Claims10
An apparatus for avoiding play in the drive mechanism of a circular saw, including electric motor means for operating a circular saw blade, comprising brake means, support means supporting said brake means for cooperation with said circular saw blade, power operating means operatively connected to said brake means, sensing means connected to sense the operating status of said circular saw blade, and control means operatively associated with said power operating means and to said sensing means for operating said brake means in response to the instantaneous operating status of said saw blade.
Dependencies are inferred from the claim text.