RONALD W DUFRIES
Engineering in Westboro, MA

4604883, Aug 12, 1986

Oct 17, 1985

6/788745

William R. Schaetzke - Shrewsbury MA
Ronald W. DuFries - Westboro MA

Morgan Construction Company - Worcester MA

B21C 110, B21C 112

72280

A mass flow control system for a wire drawing machine wherein wire is drawn through a die by a rotating block driven by a variable speed motor. The thus drawn wire is accumulated as a plurality of windings on the block before being removed therefrom via a guide. The guide is arranged on a carrier ring which rotates independently of the block about the axis of block rotation when a difference exists between the rates at which wire is wound onto and removed from the block. The control system includes a motion detector for generating electrical signals representative of the direction and speed of rotation of the carrier ring. Controls associated with the drive motor and responsive to the aforesaid signals adjust the rotational speed of the block in order to reach a steady state condition where wire is being wound onto and removed from the block at the same rate, and the carrier ring remains motionless.

4511096, Apr 16, 1985

Nov 14, 1983

6/551332

Ronald W. DuFries - Westboro MA

Morgan Construction Company - Worcester MA

B65H 5120, B21C 114

242 4701

In a wire drawing machine having at least one station with upper and lower blocks and an associated spinner carrying a transfer sheave, the blocks and spinner being rotatable relative to each other about a common axis defined by a drive shaft to which the lower block is drivingly connected, the improvement comprising controllably shifting the spinner axially on the drive shaft into and out of frictional contact with the lower block.