Nut and Bolt Lock Page: 2 of 4
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UNITED STATES PATENT OFFICE.
ERNEST R. AMES, OF SABINAL, TEXAS, ASSIGNOR OF ONE-HALF TO COMMODORE P.
WOOD, OF SABINAL, TEXAS.
NUT AND BOLT LOCK.Specification of Letters Patent. Patented May 19, 1914.
Application filed May 13, 1913. Serial No. 767,333.To all whom, it may concern:
Be it known that I, ERNEST R. AMs, a
citizen of the United States, residing at
Sabinal, Uvalde county, State of Texas,
5 have invented certain new and useful Im-
provements in Nut and Bolt Locks, of which
the following is a specification.
My invention relates to nut and bolt locks
and more particularly to that class of such
10 locks which employs a key that fits in alined
grooves or seats in the bolt and nut.
The object of the invention is to generally
improve such locking means and to render
their locking action positive and dependable,
15 while at the same time providing a device
which is inexpensive and which is readily
applied and may if desired form a perma-
nent lock between the bolt and the nut.
The above and other objects and novel
20 features will be apparent from the follow-
ing description taken in connection with the
accompanying drawing, in which:
Figure 1 is an enlarged longitudinal sec-
tional view showing the bolt and nut locked
25 together. Fig. 2 is a cross sectional view on
a reduced scale taken along line 2-2 of Fig.
1. Fig. 3 is a perspective view of the lock-
ing key.
Referring to the drawing Fig. 1 shows a
30 bolt which is provided with the usual head
10 and the threaded shank 11, the threads of
which are mutilated by two narrow grooves
or seats 12 and 13 extending transversely
across the threads of the bolt.
35 As shown in Fig. 2 the seats 12 and 13
extend into the bolt a slightly greater depth
than the threads and are formed on dia-
metrically opposite sides of the bolt, ex-
tending in the present instance nearly the
40 entire length of the shank. The nut 14 which
may be of any suitable form fits on the shank
of the bolt and clamps the work or plates 7
and 8 together, having rounded grooves or
seats 15, 16 and 17 which extend transversely
45 of the threads in the central opening 18 of
the nut. The seats in the nut are spaced
apart substantially 1200 and as in the bolt,
they are of slightly greater depth than the
threads. The seats in the nut, however, do
50 not extend all the way therethrough and
consequently leave several complete threads
adjacent one face, which is the face 19 that
bears against the work. The complete
threads extend across the keyway formed by
55 the cooperating grooves in the nut and boltand block the said keyway forming a part
against which the key is drivenand an anvil
to upset the inner end of the key. The fact
that the nut carries the part upon which the
key depends for upsetting or bending the 60
end into locking position, insures it being
possible to use the same length key for all
locking positions. Furthermore, the lock-
ing effort will be effected by the same part
of the key at all positions and that part of 65
the key is shaped so as to render absolute
the bending of the key at a predetermined
section thereof. It will be understood that
the arrangement of the seats in the bolt and
nut may be reversed, that is, the three seats 70
may be formed in the bolt and two seats
in the nut, the number of locking positions
in either instance will be six or one more
than the total number of seats in the co-
operating threaded portions. At the inner 75
end of each of the seats in the nut and there-
fore in each locking position adjacent the
complete threads there is a cavity 20 which
has a concave bottom and parallel side walls
which merge into the walls of the seat. The 80
bottom wall of the cavity is joined to the
bottom wall of the seat by a rounded shoul-
der 21. which performs a function herein-
after set forth. It is not necessary to bore
or machine the key seats aid cavities as the 85
requisite recesses may be formed on the nuts
and bolts at the same time the latter are
made by simply pressing them in while the
work is hot, by means of a suitable punch or
tool. The threads may be pressed or cut 90
afterward and such a construction makes it
inexpensive and simple to apply the proper
locking recesses to the parts.
Fig. 3 illustrates a perspective view of
the key 22, which I use to lock the bolt and 95
nut together. The key comprises a narrow
elongated plate formed to fit the alined re-
cesses in the bolt and nut, the edge 23 which
bears in the bottom of the seat in the bolt is
flat while the edge 24 which bears against 100
the bottom of the seat in the nut is rounded.
The end 25 which extends into the nut is
flat, while the opposite end has a head
formed thereon by means of which the key
may be driven into the alined seats. The 105
head comprises a T-shaped offset part form-
ing a shoulder 26 to engage the outer face 27
of the nut and limit the extent to which the
key may be driven into the seats. At the
outer end of the key the cross part 28 of 1101,097,205.
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Ames, Ernest R. Nut and Bolt Lock, patent, May 19, 1914; [Washington D.C.]. (https://texashistory.unt.edu/ark:/67531/metapth858361/m1/2/: accessed July 18, 2024), University of North Texas Libraries, The Portal to Texas History, https://texashistory.unt.edu.; crediting UNT Libraries Government Documents Department.