Improvements in Means for the Looking of Nuts.
Year: 1895

page_text: FROVIDIUNAL DE MULTIATION.
Improvements in Means for the Looking of Nuts.
I, JOHN MARSHALL MARTIN Jr. of Martin, P.O., in the County of Marion
and State of Florida, United States of America, Travelling Salesman do hereby
declare the Dature of this invention to be as follows:—
This invention relates to the locking of nuts upon screwed bolts or in+similar
situations, to prevent their slacking back, under jar or vibration, and consists in
improved means adapted to the screwed, shank of the screw or bolt for that
purpose.
I cut a groove or grooves longitudinally to the bolt or shank, and across the
screw threads of the same, over which the nut has to be screwed.
In such groove or grooves I lay a suitable number of wires, so tightly packed
that the nut will cut into them as it is screwed over the screw thread and the'
grooves containing the packed wires.
'
The wires may be twisted about and looped over one another in various ways, so
that the wires are held together, and offer elastic resistance outwards, and to make
the cutting of the nut threads upon them, as effective as possible..
When the But has been screwed home, the bundle of wires are firmly gripped by
the threads of the nut cutting therein, so that they cannot fall or be pulled out of
the groove or grooves, and the twisted ends of the wires in the rear of the nut form
a lock to the nut by their clastic projection from the groove or grooves, or by
being bent outwards over the rear of the nut or about the end of the screw or bolt
so that the nut cannot slack back by jar or vibration.
Dated this 14th day of November 1895.
1
FELL & WILDING,
Agents for the Applicant.
I, JOHN MARSHALL MARTIN, Junior, of Martin P.O., Marion County, in the
State of Florida, United States of America, Travelling Salesman 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 improvements in out-locks; and it consists of certain:
novel features hereinafter described and claimed.

page_text: Reference is 'had to the accompanying drawings, in which the same parts are
indicated by the same letters throughout the several views.
Figure represents a side elevation of a bolt of ordinary construction having a
nut thereon locked by my improved nut-lock.
Fig. 2 represents a view of a bolt and nut together with the nut lock all ready
for assembling, the nut shown being of the hexagonal type, but any other form of
nut may be used.
Fig. 3 represents a transverse section through the threaded portion of the bolt,
showing the nut-lock in the proper position therein when but one lock is used.
Fig. 4 represents a transverse section of a similar bolt when two locks are used.
Fig. 5 represents a wire loop shaped like a hair pin and adapted for use in the
bolt; and Fig. 6, represents a similar wire loop having the parts hammered
together, so as to fit snugly in the groove in the bolt, as will be hereinafter
described.
A, represents the bolt, which is of ordinary construction and is provided with
the ordinary screw-thread a and also with a longitudinal groove a' cut traversely
through the screw-threads, as shown in Figs. 1 and 2.
B, represents a nut of any ordinary or desired type. Thus in Fig. 1 the said out
is represented as quadrangular, and in Fig. 2 as hexagonal, but the exterior shape
of the nut has nothing to do with my invention.
The nut-lock proper cousists of one or more pairs of wires c which may be either
made separately, as shown in Fig. 2, or connected together to form the loop, as
'shown in Figs. 5 and 6.
These wires are made of such a size relative to the groove a that they will lie
parallel in said groove, but will project up above the base of the screw-threads a.
Thus as the nut is screwed home it will cut parts of male threads on these wires,
which threads will register with the threads ou the bolt. For facility in starting
the nut on the bolt the groove a' is preferably made somewhat deeper near the
outer end, so as to let the nut be readily screwed on to the first two or three
threads, and thus take a firm hold before it begins to cut the threads on the wires c.
These wires o are preferably ordinary soft iron wires, such as are used for binding
up hay, but wires of copper or brass or any other metal softer than steel may be
used if desired. In practice it will be only necessary to use one pair of the said
wires, but two or more pairs may be used, if desired. Thus in Fig. 4 I have shown
two pairs of the said wires mounted in corresponding grooves in the bolt.
The invention is used as follows:-
The wires c whether made separate, as in Fig. 2, or connected together, as in
Fig. 6, are laid in the groove a', as indicated in dotted lines in Fig. 2. Then the
nut is screwed home, cutting as it is screwed down male threads on the wires, and
thus firmly holding the said wires against being pulled out longitudinally from the
said groove. Now when the nut is screwed home the protruding ends of the wires
(shown most clearly in Fig. 2) are seized with a pair of pinchers or other tool, and
the two wires are twisted together as shewn in Fig. 1. The twist in the said wires
will prevent the nut from turning back ward thereon, while the threads out in the
wire by the said nut will prevent the said wires from being withdrawn longi-
tudinally, and thus a safe, cheap and simple nut-lock is obtained, in order to unlock
the bolt, raise the free ends of the wires sufficiently to grasp them with the
pinchers, untwist the same, and then unscrew the nut, which may be readily done
without injury either to the bolt or to the nut. Thus it will be seen that the
herein described nut-lock is not only a safe lock, but may also be readily
unlocked.
The herein described nut-lock is especially adapted for use on vehicles, plows, or
farm implements generally, where wires can ordinarily be found suitable in every
way for the purpose, and where it is of especial importance to have cheap, simple,
and safe locks for the nuts.
It will be obvious that three or more wires or even a stand of wire rope may be
used in place of the two wires herein referred to.

page_text: The various advantages of the herein described construction will readily suggest
themselves to any practically mind.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed I declare that what I
olaim is :-
In a nut-look, the combination with a screw-threaded bolt and a groove or
grooves therein across the screw-threads, of a nut screwed on to said screw threads
and a plurality of wires lying in said groove or grooves and out into by said nut,
and twisted together in rear of said uut substantially as described.
Dated this 14th day of July 1896
FELL & WILDING,.
1 Queen Victoria Street, London, E.C., Agents for the Applicant.