Lock Nuts.
Year: 1893

page_text: Date of Application, 14th Feb., 1893-Accepted, 22nd Apr., 1893
COMPLETE SPECIFICATION.
Lock Nuts.
We, GEORGE CLARK RICHARDS Machinist, and CHARLES GRANT HAINLINE:
Pharmacist of Anderson, County of Shasta, States of California U.S.A. 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:
This invention relates to the class of nuts for holding other nuts in place.
It consists in a nut formed of a coiled spring, the normal interior diameter of
which is less than the diameter of the bolt it is to fit the said spring being internally
threaded to fit the threads of the bolt.
The object of the invention is to provide a simple and effective nut which by
reason of its construction can be readily fitted to the bolt and will firmly bind
thereon.
Referring to the accompanying drawings for a more complete explanation of our
invention,
Fig. 1 is a longitudinal cross section, showing the application of the lock nut.
Fig. 2 is a view of the lock nut.
A is the lock nut. It is formed of a coiled spring. Its coils may be one or
more in number, and its exterior contour may be curved or angular. It may be
round or polygonal, and its sides may be straight or inclined as desired. To make
it shapely, it is preferable to bend its body coils, so that its ends will lie in flush
therewith, though this is not essential.
This nut is internally threaded as shown at a, and its normal interior diameter is.
less than the diameter of the bolt B on the threads of which it is seated.
The thread a' of the nut which is adjacent to that face which enters first on the
bolt, is made of larger diameter than the other threads, so that at this entrance
thread, the diameter of the nut is large enough to permit it to be entered upon the
bolt end. Then by screwing up the nut, it will expand and feed itself on the bolt,.
fitting very tightly thereon, so that it will not be jarred loose.
C is the nut to be locked by nut A. It is evident that without the larger
entrance thread of the nut, said nut may be entered on a bolt the end of which is.
tapered, but the former construction is preferable.
The lock nut is designed to be used on the outside of the nut to be locked and
effectually prevents it from working off the bolt, especially on bridges, wagons,.
or cars where the plain nut tightens against the woodwork and the vibration is
great.
In practice, this nut, when made of three or more coils has greater strength or
resistance than other nuts of same thickness, and it can be used, not only as a nut
lock, but as a nut itself.
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-
A lock nut consisting of a coiled spring, the interior surface of which is formed
with screw-threads and adapted to enter readily upon a bolt, said nut having its
normal interior less than that of the bolt, whereby it is forcibly expanded in

page_text: passing to its seat on the bolt and on account of its springy character is tightened
thereon substantially as described.
1
CL
1000
For the Applicants,
W. E. GEDGE,
Agent.
For the Applicants,
W. E. GEDGE,
Agent.