15
Knife Eraser
U. S. Patent Number 322, 991 was granted
to Frank L. Stowell of New York City for
his
Knife Eraser
on July 28, 1885.
Referring to the patent drawing we learn
that Stowell
s tool includes a sharp edge for
pen making or general cutting (G), an ink
eraser edge (E), a notch used for pencil
sharpening (D), a file surface for
sharpening the lead of a pencil (C), a handle
(A), and an eraser to be fitted at the end of
the handle (K).
Stowell suggests the handle can be made of
wood, hard rubber, ivory, celluloid, or any
other suitable material.
Although the patent does not mention a
corkscrew, Stowell
s product does contain a
corkscrew accessed by unthreading a wood plug in the eraser end from the
worm. The corkscrew is used for opening an ink bottle.