Jerome is a good place for old tools, like this drill press. Rust is slowed.
The larger of the two mating bevel gears is also a spur gear. Isn't this an uncommon blending?
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bevel-spur gear
Jerome is a good place for old tools, like this drill press. Rust is slowed.
The larger of the two mating bevel gears is also a spur gear. Isn't this an uncommon blending?
Last edited by aostling; 07-16-2007 at 08:32 PM.
Allan
Senior Member
how would you have like to cut that gear with out a cnc back in the day
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Last edited by oldtiffie; 08-20-2007 at 03:28 AM.
Senior Member
Possibly not that bad.....
Cut one of the gear surfaces. Then index off it on another machine, and cut the other. A bit of adjustment of the setup, and you are there.
Could be done on a milling machine, or a purpose made gear cutter. The bevel portion might have been done as the form cutter approximation, or cut on a proper bevel gear shaper, and the spur gear indexed off it.
Still, it is interesting, and one wonders just why they felt the need to add those steps to production. Possibly it fit better in the design.
It appears that the pinion on the crank arm will engage the spur gear portion, giving the option of hand or lineshaft drive.
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