I Give, What Is It! SOLVED!

[jpalex]

Yah, almost! Don't think I'll be able to talk the wife into that one. It looks pretty nice as a center piece on the dining room table at the moment. Could even stick a lazy Susan on it. Not sure it will be there to long, destined for another location I'm sure.

[turnnut]

is that curved spoke handwheel mounted on a corn sheller thats in the 1st picture ?

[jpalex]

Yes indeed, that's exactly what it is! Why you ask?

[turnnut]

I also have a few corn shellers and it caught my eye, is there a name on yours ?

at the small farm shows, I let the kids shell corn, but you would be surprised at how many
mothers also like to do it.  then I have a small corn grinder and let them grind up what
they shelled.  I have to find a supply of corn on the cob for this years shows.

at 77 I am slowing down with the shows.

[jpalex]

Well, I beat you to it, I'm starting to slow down at 67! The name on the sheller is Hofherr Schrantz Clayton Shuttleworth, Prima.
It's from Europe. I've been tempted to hook it up to my hit miss engine, it's set up for a belt pulley on the back side. I wish their was more history out here in N CA, good farm shows with old iron are few and far between. Where you hang your hat?
Regards.

[turnnut]

JPALEX,  I am in Monson, Massachusetts, a small town in the central part of the state. next town over from
Brimfield, Mass. where they have 3 yearly flea markets on a long strip of Route 20.  Rt. 20 runs East to West
from Boston, Mass. to Oregon coast.  flea markets run 1 week each of spring, summer & fall. thousands of
people from all over the world show up for these.  I am also about 7 miles from the CT border.
I started out showing old one lunger engines, and switched to farm tools & old wrenches with other mechanical
things. as we talk about age,  my display that I bring to the shows are getting smaller.  I really like researching
the items that I find.    hope that you can find some shows, the small shows where you can find time to talk
to the people are the best.  it is fun hearing some of the old timers talk about using something that you have
on display, it adds to the history of the items. 

[Billman49]

Clayton & Shuttleworth was an engineering company located at Stamp End Works, Lincoln, Lincolnshire, England. The company was established in 1842 when Nathaniel Clayton (1811–1890) formed a partnership with his brother-in-law, Joseph Shuttleworth (1819–1883).

I guess the corn shucker was designed by Hofherr Schrantz (in Germany??) and made under licence by them for sale in the UK and other English speaking countries.. Clayton & Shuttleworth did a lot of export business with Poland, so probably had agents in Germany & Poland - they probably also looked for products that C&S could make back in the UK...

[jpalex]

You're correct on the sheller manufacture. I remember tracking down that bit of info back when I grabbed it. It's an interesting piece, presents itself well. Maybe this year some time I'll get around to getting the correct belt pulley and run it with my little Baker Monitor hit miss engine, the grand kids would love it? Need to inquire around to find out the correct pulley diameter so it turns at an appropriate speed.

[Billman49]

The flywheel looks typical of those found on hand cranked machines, so I'd go for a speed of 50 to 100 rpm - hit and miss engines often idle about 200 rpm - so a pulley twice that of the crankshaft pulley would be about right....

[jpalex]

Thanks for the info. The crank flat belt pulley on my engine is 4.5", so you're suggesting a 9" or so pulley on the sheller?

[Chillylulu]

12" is just over 75 RPM if your engine runs at 200 RPM.

Chilly

[jpalex]

12", how'd you figure that out so easy?! I was heading toward a 10" or so with the info another post suggested in stating twice as big as crank pulley. I have a habit over the  years of jumping to fast to get these projects finished an onto the next, perhaps I better ask all the correct questions up front for a change!
Thanks you for you help and direction.

[Chillylulu]

12", how'd you figure that out so easy?! I was heading toward a 10" or so with the info another post suggested in stating twice as big as crank pulley. I have a habit over the  years of jumping to fast to get these projects finished an onto the next, perhaps I better ask all the correct questions up front for a change!
Thanks you for you help and direction.

The formula for reducing / increasing speed (simple, no load factors) is based on the circumference, or distance around a pulley.  If you have a circumference (distance) of 10", and you want to go slower, say twice as slow, you'd double the circumference and need 20" around the outside. Then for every turn of the drive pulley the belt would move 10", the driven pulley would go halfway around.

We don't use circumference, we measure diameter. To convert diameter to circumference we use pi. Pi is the ratio of the circumference to the radius of a circle. To go halfway around a circle it takes 3.1416 radians, or the radius x pi. As we want the entire distance the formula is 2r (pi) or 2 x radius x pi, or d x pi.  I use the diameter (d) which is 2r, since we already know that.  The thing is, it all works out to a constant.  So you don't need pi, or rather because it is a ratio it all works out. I was just including the bs.

You figured it right, to halve the speed, double the pully width.  I just used a different output speed.  You intuitively knew how to get what you wanted.

To figure the speed difference you divide the input speed by the desired output speed.  I chose 75, as the range while the motor is idling can vary. Best to be mid-range to start. If engine is fast, you can handle 33% over and still be within spec. For an un-governed motor, usual minimum is 20% over speed allowance, so it is cool. 

So, 200 rpm ÷ 75 rpm = 2.67   2.67 x 4.5 = 12.015, or a 12" pulley.

[Billman49]

You figured it right, to halve the speed, double the pully width. 

Pulley diameter!! The width is the axial measurement, i.e. matches the belt width.. (sorry to be pedantic)...

[jpalex]

Thank you all, believe I'm good to go! Now to search out a pulley.