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Millers Falls Company - Millers Falls and Greenfield, MA

  
  Parsons' Spring Chuck patented by William J. Parsons 2 of 4  
Construction Details

Chuck with company name and patent info
 - early version.

  

Chuck without company name
and patent info - later version.

Chuck disassembled.
It is built with ten parts.

  • 3 springs

  • 3 jaws

  • Cone

  • Shell

  • Cap

  • Locking Screw

  

Main body parts:

  • Shell

  • Cap

  • Locking Screw

 

The Cone

The cone - bottom view

The cone on the cap.

  

The cone with spring inserted. 

The cone with  all (3) spring inserted. 

  

Three jaws - inside surfaces that hold bits.

Three jaws - outside surfaces that slide against the inner walls of the shell.

  

The jaws mounted on the cone.

The hooks that hold jaws
aligned in the cone.

  

Cone with jaws inserted into the shell.

The chuck reassembled - early version.		  
The chuck reassembled - later version.
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