Improvements in Nut Locks.
Year: 1895

page_text: Date of Application, 18th June, 1895-Accepted, 20th July, 1895
Improvements in Nut Locks.
I, FRANK COMMINGE, of San Antonio, in the County of Bexar, and State of
Texas, United States of America Gentleman, 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:-
The invention relates to improvements in nut locks. The object of the present
invention is to improve the construction of nut locks, and to provide a simple,
inexpensive and efficient one capable of securely locking a nut against accidental
rotation and adapted to be readily applied to single nuts having either right or
left hand threads. A further object of the invention is to provide a nut lock which
may be readily operated to release the nut to permit the same to be unscrewed
without injuring the nut lock or any of its parts.
The invention cousists in the construction and novel combination and arrange-
ment of parts hereinafter fully described, illustrated in the accompanying drawing,
and pointed out in the claim hereto appended.
In the drawing: :-
Fig. 1 is a perspective view of a nut lock constructed in accordance with this
invention.
Fig. 2 is a central longitudinal sectional view.
Fig. 3 is a detail perspective view of the bolt.
Fig. 4 is a similar view of the nut.
Figs. 5 and 6 are detail views of the washers.
Like numerals of reference indicate like parts in all the figures of the
drawing.
1 designates a bolt provided in its threaded portion 2 with a longitudinal
groove 3 and having arranged on it inner and outer washers 4 and 5 and adapted
to permit a nut 6 to be screwed on it in the usual manner. The uut 6 is provided
on its inner face with radial series of annularly disposed shouldered teeth 7
disposed in the opposite direction of the pitch of the threads and arranged to be
engaged by the washer 5 which is split and is provided at one end with a tooth 8
for engaging the teeth of the nut. The other end of the split washer is provided
with an inward-extending radial tooth or projection 9 fitting in the groove of the
bolt and locking the washer 5 against accidental or any other rotation. The
washer 5 is constructed of spring metal preferably sheet steel and its toothed end
is outwardly offset for engaging the nut and is located adjacent to a recess 10
in the outer face of the washer 4 and is adapted to be depressed into the recess
to disengage the tooth 8 from the nut to permit the latter to be unscrewed.
The washer 4 is a heavy one, constructed of any suitable metal such as iron or
steel and is provided with a radial projection 11, similar to that of the spring
washer and fitting in the groove of the bolt to lock the heavy inner washer against
rotation. At the inner side of the inner washer is located a peripheral recess 12
to permit a pair of pincers to be readily engaged with the heavy inner washer
and the locking end of the spring washer to depress the outwardly-offset end of
the locking washer to free the nut to permit the latter to be unscrewed.
By this construction the nut is securely locked against accidental rotation and
may, by the aid of a pair of pincers or other tool be made to release the nut to
permit the same to be taken off of the bolt, and it will be seen that the nut lock
is exceedingly simple and inexpensive in construction, that it is positive and
reliable in its operation, and that, in being released, is in nowise injured.
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page_text: Changes in the form, proportion and the minor details of construction may be
resorted to without departing from the principle or sacrificing any of the advantages
of this invention.
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 :-
In a nut lock, the combination of a bolt provided at its threaded portion with a
longitudinal groove, the heavy inner washer having a radial projection at its
bolt-opening to fit in said groove and provided, at its inner face with a peripheral
notch and having at its outer face à recess, the resilient split locking washer
provided at the inner edge of one end with a projection to fit in the groove of the
bolt and having its other end located at said recess and outwardly bent and
provided with a tooth and adapted to be depressed in said recess to disengage the
tooth, and a nut arranged on the bolt and provided at its inner face with an
annular series of shouldered teeth adapted to be engaged by said tooth, substantially
as and for the purpose described.
Dated this 18th day of June 1895
BOULT & WADE,
Agents for the Applicant.