Nut Lock.
Year: 1894

page_text: Date of Application, 28th June, 1894-Accepted, 1st Sept., 1894
COMPLETE SPECIFICATION.
Nut Lock.
1, NELSON BARNES, Gentleman, resident of Cat Spring, County of Austin,
State of Texas, 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 :-
My invention relates to an improved nut lock, arranged and operated as herein-
after specified and designated in the claims.
Referring to the drawings:
Figure is a sectional side elevation of the bolt and nut, constructed in
accordance with my invention.
Fig. 2 is a transverse section through the nut.
Fig. 3 is a sectional side elevation of the nut and bolt, constructed in accordance
with my invention in a slightly modified manner.
Fig. 4 is an edge elevation of the nut detached.
Fig. 5 is a transverse sectional view of the nut shown in Fig. 3.
1 indicates a bolt, which may have the usual form, and be provided with a
rounded head 2 at one end, and screw-threads at its opposite end, and be capable of
use for various purposes.
2* indicates the nut, which may be either of square, hexagonal or octagonal
form, and it has in one or all of its edges a hole or passage 3ª, which extends from
its outer edge to the bolt hole thereof. This hole may be either circular or
angular in cross-section.
4 indicates a punch, which is preferably made of hardened steel with a shank 5
at one end, which is reduced in diameter, and with a head at its opposite end for
the reception of blows of a hammer, or other proper instrument. The shank 5 is
preferably of such size as to snugly fit within the hole or passage 3* in the nut.
In some cases I may form the nut as shown in Figs. 3 and 5, with an inwardly
flaring or tapering recess 6 at the base of the hole or passage 3ª, and next adjacent
the threaded bolt hole of said nut, for a purpose now to be mentioned.
In carrying out my invention, the nut 2 is first screwed onto the bolt to the
limit of its inward movement, or to the desired position, and then the shank 5 of
the punch 4 is inserted in the hole or passage 3 of the nut and driven forcibly
therein by means of a hammer, or other implement, and the portion of the screw
threads on the bolt will thereby be mashed, flattened or disfigured by the end of
said shank which comes in contact therewith, so that a depression 7 will be formed
in said threads, as shown in Fig. 1, and said threads will thereby be so disfigured
that it will be impossible for the nut to jar or become loose of itself during use.
In other cases I may proceed as above described, with the form of a nut as
shown in Fig. 3, and withdraw the punch and insert into the hole or passage 3ª a
plug or billet 8 of malleable or plastic material, such as lead, copper, or aluminium,
preferably copper, and then drive said billet into the flaring recess 6 at the base
of said hole or opening, and thereby spread the same throughout said recess, and
upon the flattened portion 7 of the screw-threads of the bolt, until such malleable
material is driven compactly into such space and then withdraw said punch, and
the malleable, material thus packed into said flaring recess will act as a very
Or, as
efficient nut lock, and prevent accidental loosening of said nut during use.
shown in the upper part of Figure 3, the plug may be forced against the threads
of the bolt without first indenting them.
It will be observed that the end of the punch which contacts with the bolt is cut

page_text: off square, and is perfectly flat, but this end of the punch may be of any common
shape, such, for instance, as pointed, diamond pointed, chisel-shaped, or bevelled on
one or both sides, and the operation will be substantially the same in either case.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is :
1. The method of securing a nut on a bolt, consisting in first screwing a
threaded nut in position upon a threaded bolt, and then mashing or otherwise
disfiguring the thread of said bolt at a point intermediate of the flat faces of said
nut, substantially as herein specified.
2. The method of securing a nut on a bolt, consisting in first screwing a threaded
nut upon a threaded bolt, next locating a malleable plug or billet of material in
contact with the threads of said bolt at a point intermediate of the flat faces of
said nut, and then forcing a plug of malleable or plastic metal into intimate
contact with the threads of said bolt at a point intermediate of the flat faces of said
nut, substantially as herein specified.
3. In a nut lock, the nut 2 having a hole or passage 3* formed in its edge, and
extending inward to the bolt hole therein, substantially as herein specified.
4. In a nut lock, the improved nut 2 having a series of holes or passages 3"
formed in its edges and extending from said edges inward to the bolt hole thereof,
substantially as herein specified.
Dated this 28th day of June 1894.
ALLISON BROS.,
Agents for the Applicant.