Improvements in Nut Locks.
Year: 1892

page_text: Date of Application, 31st Dec., 1892-Accepted, 4th Feb., 1893
COMPLETE SPECIFICATION.
Improvements in Nut Locks.
We, JOHN W. PUGH, Merchant, and LYMAN HENRY AUSTIN, Lumber Dealer,
both of Grand Rapids, in the County of Kent and State of Michigan, United
States of America, do hereby declare the nature of this invention and in what
manner the same is to be performed, to be particularly described and ascertained
in and by the following statement :-
Our invention relates to improvements in devices for preventing nuts from
unscrewing from bolts when loosened by constant and continued use; and its
objects are, first, to utilize the washer between the nut and the article secured
as a base for securing the nut lock, and, second, to so construct the washer that
it will not turn with the nut. We attain these results by the mechanism illustrated
in the accompanying drawings, in which-
Figures 1, 2, and 3 are elevations of our lock with its several forms of fastening
as applied to a nut, and
Figs. 4, 5, and 6 are plans of the several forms of blanks from which our lock
is made.
Similar letters refer to similar parts throughout the several views.
The lower portion B of our device is simply a washer, the aperture B' being
of a proper size to receive the bolt D freely and the washer placed between
the nut and the article secured; but instead of making this washer round (the
usual form of washers) we extend an arm from each side of the washer proper,
which arm terminates in fastening devices, and where they are used to protect
the surface of wood we provide one or more points, which we turn down, as
indicated in Fig. 3, so that as the nut is screwed down upon the washer the
points are forced into the wood, thus preventing the washer from turning with
the nut; but when used upon an iron surface these points are neither necessary.
nor available, as the projecting ends of the washer will in most cases prevent it
from turning by coming in contact with some projecting portion of the iron, as
the flange upon railway rails, etc.
A represents the lock proper, which is made of any suitable material, having
an aperture A' of a proper form and size to fit upon the nut, as represented in
Figs. 1, 2, and 3, the balance of the lock being of the same general form of the
washer. Both the lock and the washer are bent at right angles in the vicinity of
the dotted lines xx, so that they may be brought together and locked by passing
the end of each through and folding it around the other, as in Fig. 1, or one
end of each may be folded crosswise and the two interlocked either at one
or both ends, as shown at a' b in Fig. 2; or the end of one may be passed
through a slot in the end of the other, as shown at a¹ 61 in Fig. 3, and the
opposite end secured by a rivet, as in Fig. 3, by overlapping and folding, as in
Fig. 2, by the slot and projecting end, or in any other suitable and available
manner.
To apply these nut locks place the washer B over the end of the bolt D upon
the surface of the body to be bolted and apply and screw the nut C solidly to
place outside of the washer. Bend the ends of the washer at right angles at z.
Place the lock over the nut, with the ends bent to interlock with the ends of
the washers, and interlock them by any of the several devices hereinbefore
described, or in any other suitable manner, so that the nut cannot be turned
without removing the lock portion or cap A from over it.

page_text: Having now particularly described and ascertained the nature of our said inven-
tion, and in what manner the same is to be performed, we declare that what we
claim is :-
1. The combination, in a nut lock, of a washer having extended ends provided
with locking devices, and a cap having an aperture to fit over the nut, and
extended ends provided with locking devices, each end of both the cap and
washer to be bent at right angles and to interlock with the corresponding end
of the other, substantially as and for the purpose set forth.
2. The combination, in a nut lock, of a washer having extended ends and
provided with backwardly projecting points and a cap fitted over the nut, the
ends of each bent at right angles and interlocked with the corresponding end of
the other, substantially as specified.
3. The combination, in a nut lock, of a washer having extended ends, one of
which is provided with a slot, the other with any suitable locking device, and a
cap having an aperture to fit over the nut and both ends extended beyond the
nut, one end of said cap fitted to enter the slot in the washer and the other
end with a locking device corresponding with the opposite end of the washer,
the ends of each bent at right angles and interlocked with the corresponding
end of the other, substantially as and for the purpose set forth.
4. The combination, in a nut lock, of a washer having extended ends, one end
provided with a slot, the other with an aperture for a rivet, and points bent
back from the surface of the washer, and a cap provided with an aperture to fit
over the nut, and projecting ends fitted to interlock with the ends of the washer,
and a rivet, substantially as and for the purpose set forth.
Dated this 30th day of December 1892.
F. W. BARKER,
Applicants' Agent.