Figure 5. Patent drawing of Thomas Hill's machine (US patent #18692, 24 Nov. 1857). Hill's patent model survives in the collections of the Smithsonian Institution.
Figure 5.

Patent drawing of Thomas Hill's machine (US patent #18692, 24 Nov. 1857).4 Hill's patent model survives in the collections of the Smithsonian Institution.

Additional Information

ISSN
1934-1547
Print ISSN
1058-6180
Pages
59-65
Launched on MUSE
2008-03-31
Open Access
No
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