Louis Luu Posted June 15, 2022 Share Posted June 15, 2022 Quote Link to comment Share on other sites More sharing options...
Russ Huber Posted June 15, 2022 Share Posted June 15, 2022 Now you're talking turkey. 🙂 1 Quote Link to comment Share on other sites More sharing options...
Louis Luu Posted June 15, 2022 Author Share Posted June 15, 2022 (edited) Also, note that the top base is off center from the long extension "arm"...this is to help with balance? Edited June 15, 2022 by Louis Luu 1 Quote Link to comment Share on other sites More sharing options...
Louis Luu Posted June 15, 2022 Author Share Posted June 15, 2022 Quote Link to comment Share on other sites More sharing options...
Russ Huber Posted June 16, 2022 Share Posted June 16, 2022 (edited) 2 hours ago, Louis Luu said: I just don't see how it would work with a motor sitting on top. You're overthinking it. The top section that rotates with the fan motor mounted is sleeved to fit over the rod mounted to the lower section (rod dished on top) like an Emerson rotor slides on to the hardened steel shaft. Notice the recessed area of the rod and the screw (K6) that is turned in to the recess to secure the rotating upper section on the pin. The sleeve fitted over the rod keeps the rotating upper section with fan mounted on it level and secure while it spins. The machined metal point integral with the rotating upper section seated on the DISHED top of the rod seen under K7 is supporting the load of the upper rotating section and fan motor. This is where the upper section rotates with minimal resistance due to the minimal load bearing metal contact between the upper section point resting on the DISHED area of the rod mounted the lower section. Edited June 16, 2022 by Russ Huber 1 Quote Link to comment Share on other sites More sharing options...
Russ Huber Posted June 16, 2022 Share Posted June 16, 2022 When the fan is mounted on the top rotator section, you won't see the dip. The dip section brings the load bearing pin/sleeve lower to reduce the amount of sleeve length over the lower section rod without jeopardizing the top section rotator stability. The less metal against metal contact/friction....the more free it spins. 1 Quote Link to comment Share on other sites More sharing options...
Russ Huber Posted June 16, 2022 Share Posted June 16, 2022 1 Quote Link to comment Share on other sites More sharing options...
Russ Huber Posted June 16, 2022 Share Posted June 16, 2022 You could drill a centered threaded hole and thread in a hardened steel screw with the point on the end rather than machine a sleeve and internal point. You could machine a sleeve to fit over the lower rod as well that can be threaded on to the top rotator. Hill's patent plan appears to cast the top rotator and machine the integral sleeve. If you machine those components separate the more easily replaceable when worn, as I see it. I am not an engineer. The focus is MINUMAL metal to metal friction and balance for free effortless spin. Quote Link to comment Share on other sites More sharing options...
Louis Luu Posted July 29 Author Share Posted July 29 Quote Link to comment Share on other sites More sharing options...
Louis Luu Posted July 29 Author Share Posted July 29 Blade is 7.5 inch diameter with a shaft of 6.37mm. The pitch is 15 degrees counter clockwise. Blade thickness before polishing is 1.2 mm. I gave the blade a slight curvature of about 12 degrees. 1 Quote Link to comment Share on other sites More sharing options...
George Durbin Posted July 29 Share Posted July 29 24 minutes ago, Louis Luu said: Blade is 7.5 inch diameter with a shaft of 6.37mm. The pitch is 15 degrees counter clockwise. Blade thickness before polishing is 1.2 mm. I gave the blade a slight curvature of about 12 degrees. Orville and Wilbur Wright would have said that blade is not a very efficient design! 😅🤣😂 Quote Link to comment Share on other sites More sharing options...
Louis Luu Posted July 29 Author Share Posted July 29 15 minutes ago, George Durbin said: Orville and Wilbur Wright would have said that blade is not a very efficient design! 😅🤣😂 I would agree. Will find out. Placing order and having someone test it out. Quote Link to comment Share on other sites More sharing options...
David A Cherry Posted July 31 Share Posted July 31 W S Hill electric knife switch 1 Quote Link to comment Share on other sites More sharing options...
George Durbin Posted July 31 Share Posted July 31 Well David you have a point, would that be enough? Js... Quote Link to comment Share on other sites More sharing options...
Russ Huber Posted July 31 Share Posted July 31 (edited) Sold at Auction: Vintage Industrial Electric Knife Switch - WS Hill Electric Co. (invaluable.com) Edited July 31 by Russ Huber Quote Link to comment Share on other sites More sharing options...
Louis Luu Posted August 1 Author Share Posted August 1 (edited) Updated the logo work as this was done a long while back. Reworked the geometry so it will fit new bearing plate and slip ring. Will add all them accessory parts later. The blade is 7.5 inch for size reference. Edited August 1 by Louis Luu Quote Link to comment Share on other sites More sharing options...
Louis Luu Posted August 1 Author Share Posted August 1 I left room for bigger blade since I don't really have an idea what the parameters of the motor is. Quote Link to comment Share on other sites More sharing options...
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