Early Shape Cutting Machine Patents

Patent no. 2,494,532 was issued to Mr. Clarence P. Ager on
January 17, 1950.  The fact that he filed for the patent on
April 20, 1945 shows the typical lead time for processing
and issuing patents in the early '50s.
The machine shown in the illustration is a typical of the
pantograph units that have been produced since the early
1920s and are still in production today.  The patent here,
was issued for the design of the overhead template holder.
The template holder has a spur gear controlled by a
lever.  The gear engages with teeth on the overhead arm.
The torch is lit, and the powered magnetic tracer actuated.
The lever is pulled slowly, moving the template, tracing rotor,
and cutting torch an inch or so.
The template is then locked in place, and rotor follows
the template edge, cutting out the desired piece.  The fact
that the torch was slowly moved to its starting position
while the rotor was already in motion, was credited with
eliminating a starting burr on the cut face.
 
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