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Self-Propellered: 1922

Washington, D.C. "Paragon adjustable and reversible aircraft propeller created by Spencer Heath and tested on October 11, 1922, at Bolling Field." 4x5 glass negative. View full size.

Washington, D.C. "Paragon adjustable and reversible aircraft propeller created by Spencer Heath and tested on October 11, 1922, at Bolling Field." 4x5 glass negative. View full size.

 

On Shorpy:
Today’s Top 5

What if I

No! Don't touch that one!

Just a cart

This is a test rig for the propeller, notice the chains and blocks to keep the rig mostly stationary.

And it

... makes mountains of coleslaw!

Throwing the plane into reverse

... would save time and fuel (no lengthy banked turns) and confuse the enemy.

Spencer Heath was quite the inventor

Little known facts: This photo is of the very first Heathkit! Also, he invented the Heath Bar.

Darwin Award

All those gasoline fumes, and there's a guy on the far left about to strike a match.

Probably difficult

... to parallel park. Kind of like the "Bass-O-Matic".

Look out Roadrunner

I'm sure this latest device from Acme will finally help Coyote catch his nemesis!

Gee!

What could go wrong here?

Happy ending?

I think I would pass on a ride. I don't see a happy ending here since it doesn't look like it is steerable. Not to mention getting blown off the wagon by prop wash.

Bet it really flies

Wonder what quarter-mile times they could get?

All Safety Aside

No, that's it.

Spec sheet

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