Early AC Pic - Hydro Manufacturing

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   I'm wandering off topic here, sorry about that, but I like these early pics. Here is a pic of 
a plate steel spiral casing (commonly referred to as the scroll) for 70,000 horse-power Niagara Falls hydraulic turbine unit at the Allis-Chalmers Manufacturing Company erecting shop. The casting inlet diameter is 15 feet while the overall diameter is 50 feet. The plate thickness varies from 7/8 to 1 1/4 inches. Note the automobile in the lower right corner for scale.
                                                                                                       Date Unknown

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GBACBFan Members Profile Send Private Message Find Members Posts Add to Buddy List Orange Level Joined: 11 Sep 2009 Location: Green Bay WI Points: 2662	Post Options Post Reply Quote GBACBFan Report Post Thanks(0) Quote Reply Topic: Early AC Pic - Hydro Manufacturing Posted: 11 May 2011 at 11:11pm
	I'm wandering off topic here, sorry about that, but I like these early pics. Here is a pic of a plate steel spiral casing (commonly referred to as the scroll) for 70,000 horse-power Niagara Falls hydraulic turbine unit at the Allis-Chalmers Manufacturing Company erecting shop. The casting inlet diameter is 15 feet while the overall diameter is 50 feet. The plate thickness varies from 7/8 to 1 1/4 inches. Note the automobile in the lower right corner for scale. Date Unknown
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mnoonan-NEWI Members Profile Send Private Message Find Members Posts Add to Buddy List Orange Level Joined: 11 Sep 2009 Location: Marinette, WI Points: 738	Post Options Post Reply Quote mnoonan-NEWI Report Post Thanks(0) Quote Reply Posted: 11 May 2011 at 11:32pm
	Larry, Being a career draftsman I marvell at the geometry of the curved and tapered shape of the steel parts and back then the parts were drawn out probably with a T-square and other hand drawing tools on vellum paper. I don't think drafting machines were even available at that time. Mike
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