B - Operations – Transporting – 23 – B
Patent
B - Operations, Transporting
23
B
29/14, 29/19
B23B 29/034 (2006.01)
Patent
CA 1049765
ABSTRACT OF THE DISCLOSURE Rotating head structure including a generally cylindrical housing having a bore extending therethrough axially of the axis of generation thereof, a slide positioned across the bore at one end of the housing, keeper plates secured to the housing at the one end thereof for providing a slideway for said slide to move transversely of the axis of generation of the housing, a drawbar extending into the other end of the housing through the bore therein, and a cam key acting between the drawbar and slide for moving the slide transversely of the housing on axial movement of the drawbar within the bore, which cam key is provided with a cylindrical pivot portion, and a generally rectangular portion having beveled opposite corners whereby the cam key is self aligning in a slot in one of the drawbar and slide. A lubricating fitting is also provided extending into the housing and the slide is provided with lubricat- ing grooves in the surfaces thereof. Positive stop means are provided to limit movement of the drawbar into and out of the bore in the housing. In addition, adjustable stop means are provided to limit movement of the slide transversely of the axis of generation of the housing.
267021
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