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G. M. Yost Mfg. Co.
Meadville, Pennsylvania
Do you have a Yost vise? I would like to use your photos here. |
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Gilmore M. Yost of
Mechanicsburg, Pennsylvania filed an application on Aug. 19, 1907 for
the No. 1 vise shown at the very top. That's just one year after Joseph
F. Emmert died. G. M. Yost's patent was approved on Sept. 29, 1908.
Yost's universal vise has obvious similarities. Some of the new
"Improvements" include a hinged angle bracket that mounts from below
"without reducing the thickness of the top of the bench". The slot in
the beam is on the bottom which will keeps more dust and shavings out.
The taper adjustment is different with a knob on the front. The tilt
adjustment mechanism is a different design also and does not appear to
be as strong. The tilt adj. bar is thinner and the tilt adj. bracket is
held on with only 2 screws. The jaws measure 8" x 16".
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In 1908, G. M. Yost Mfg. Co.
was established. Today, Yost Mfg. Co. still manufactures various vises
and jaw caps.
Yost Mfg. Co.
388 W. 24th St.
Holland, MI 49423
phone 616-396-2063
http://www.yostvises.com |
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 Aug.
15, 1902 G. M. Yost signed as one of the witnesses for this Emmert
vise patent. |
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Patent 899,779
Dated Sept 29, 1908 by G. M. Yost.
To see the
official content as published by USPTO, go to
http://patft.uspto.gov/netacgi/nph-Parser?patentnumber=899779 and
click on the Images button.
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Fig. 4 shows a cross section of the Yost Universal Vise. Note the taper
adj. knob facing front. |
Fig. 6 shows the hinged mounting angle screwed to the underside of the
bench top. |
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Yost Vise Photos
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This Yost is Serial Number 8452. |
Here it is disassembled. |
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Tilt Adj. Rod |
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Another Yost specimen. |
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Thomas Ash restored this beauty in May 2004. |
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