48
An interesting feature of Philemon Pement's 1907 patent for a
Tent Stake
is a
removable handle for screwing the stake into the ground. He suggests that this handle
could be made
of a bar of iron, wood, or other suitable material
(like corkscrew
handles!). U. S. Patent No. 841,812 was issued January 22, 1907.
Fence Posts
In Johnstown, New York, John W. Latcher and True W. Smith came up with their
Improvement in Fence-Posts
giving it added strength by
having the posts formed
with a spiral or 'corkscrew' point having two or more coils to hold with a firm grip.
They suggested using a wrench on the square top to screw the post into the ground. U.
S. Patent No. 168,097 was issued September 28, 1875.