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Multimachine-Concrete-Machine-Tools

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Description

The new home of the Multimachine concrete machine tool project.

Lucian I. Yeomans designed concrete machine tools that were used to produce most of the American cannon shells in the First World War. His techniques have been almost forgotten since then.

“An unusual type of single-purpose lathe was designed by Lucien I. Yeomans, of
the Amalgamated Machinery Co., Chicago, for which he was awarded a medal
by the Franklin Institute of Philadelphia. This type of lathe was intended for
making large shell of from 6 to 16 in. in diameter. The head-stock and body of
the lathe were cast in one solid piece, with holes cored out for the spindle and
ways. The ways were merely accurately ground lengths of round steel shafting
so placed that the ends projected through the cored holes in the bed. They were
properly located by means of huge master jigs, and then type-metal was poured
into the cored holes and around the ends of the shafting. This held them securely
in place. The carriage and cross-slide guides were made and located in the
same general way. The lathe spindle turned in a machined bushing which was
set into the cored hole in the head and secured with type-metal. This method of
construction saved an immense amount of machining, as there was no work put
into its construction except such as could be turned or bored. The makers were
enabled to turn out a large number of machines in an astonishingly short time."

******
His ideas when combined others found at http://groups.yahoo.com/group/multimachine/ can be used to make extremely low cost machine tools for use in Developing Countries.

OUR ACCURATE MACHINES ARE MADE USING ONLY SCRAP STEEL AND CONCRETE!

We are writing a "How to Build" book that will complete the project. The most important information about Yeomans and his techniques can be found in the "2 Yeomans and his concrete machine tools" folder in "files" section here. Design activity takes place at http://groups.yahoo.com/group/multimachine/
*******

Most Recent Messages

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Re: Cement material questions
I would urge anyone who has access to epoxy and can afford it to use it. Again, as Kobus as done, experiment with mixtures and pick the one that seems most
Posted - Thu Apr 11, 2013 10:05 am
Shannon DeWolfe
s.dewolfe
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Re: Cement material questions
i like the concrete bit ... sorry Pat.. you can use a epoxy stone mix as well... ? ... No shrinkage, self leveling.. (the biggest thing we did with the epoxy
Posted - Thu Apr 11, 2013 9:37 am
Kobus Van der Walt
kvdwalt
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Re: Cement material questions
Thanks guys for the info, ill do some more reading up and hopefully (fingers crossed) put something together over the coming months) Cheers Troy
Posted - Thu Apr 11, 2013 8:56 am
regterwgbb
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Re: Cement material questions
Howdy, The best way to control shrinkage is to use only as much water as necessary to make the cement "workable";. All water in excess of that necessary to
Posted - Thu Apr 11, 2013 12:30 am
Shannon DeWolfe
s.dewolfe
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Re: Cement material questions
no experience to speak of here but i would presume that you should be able to get within .001 in or so ... -- jeremy youngs
Posted - Wed Apr 10, 2013 11:11 pm
jeremy youngs
jcyoungs04
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