Nut Lock.
Year: 1899

page_text: PROVISIONAL SPECIFICATION.
Nut Lock.
I, WILLIAM CLIFTON BOGARD, Carpenter, residing at Charleston, County of
Mississippi, State of Missouri, U.S.A., do hereby declare the nature of this
invention to be as follows:-
In this invention of nut locking device the screw bolt is formed with a square
or other angular extension over which engages a correspondingly apertured nut
cap. The nut, over which the cap takes, is notched on its sides and a spring
catch mounted within the cap engages in one of the notches and thus connects
the nut and cap together. In this position the nut is locked.
To remove the nut a key is provided which is adapted to be inserted through
a key hole slot formed through one of the sides of the cap. When this is done
and the key turned it engages with the spring catch to lift it out of the notch
in the side of the nut when the cap may be withdrawn leaving the nut free to
be turned.
Dated this 20th day of Wax 1800
THOMAS R. SHILLITO,
15, Tooks Court, London, E.C., Agent for the Applicant.
I, WILLIAM CLIFTON BOGARD, Carpenter, residing at Charleston, County of
Mississippi, State of Missouri, 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 nut-and-bolt locks; and the object thereof is to
provide means whereby the nut may be effectively locked against accidental
displacement and may be quickly and easily removed without destroying any
portion of the device, so as to permit of the renewed use thereof.

page_text: In the drawings,
Figure 1 is a perspective view of a bolt and nut, the latter being broken away
and having my improvements applied thereto.
Fig. 2 is a longitudinal sectional view thereof.
Fig. 3 is a transverse sectional view taken on the line of Fig. 2.
Fig. 4 is a detail perspective view of the spring-catch removed.
Referring to the accompanying drawings, I is a threaded bolt of usual con-
struction, having its end reduced and angled or flattened, as at 2.
The nut 3
is of usual form, but is provided in each of its edges with a notch or recess 4.
The means for locking the nut upon the bolt comprises a cap-piece 5, open
at its inner end and adapted to receive the nut therein and having its outer end
closed and provided with an angular opening 6 to correspond with the angular
end 2 of the bolt and adapted to fit thereon, so that the cap-piece cannot be
turned independently of the bolt. A spring-catch 7 is mounted within the cap-
piece to engage with one of the notches of the nut, and thus connect the nut and
cap together. This catch is preferably formed from a single length of flat spring
metal bent intermediate its ends and folded upon itself to form an attaching-
arm 8 and the spring-catch proper. The free end of the catch is bent at an angle
thereto to form a catch-head 9. The catch is mounted within a longitudinal
recess 10, formed in one of the inner faces of the cap, and the spring-catch is
mounted thereon by means of its attaching-arm in any preferred manner.
To lock the nut, the cap-piece is placed over the angular end of the bolt and
inclosing the nut, with the catch-head 9 engaging one of the notches of the nut,
thereby connecting the nut and cap-piece together. As the cap-piece is fitted
about the reduced and flattened end of the bolt it is prevented from turning
thereon, as will be understood, and thereby the nut is locked against turning.
To remove the nut, a key 12 is provided. This key is adapted to be inserted
through a keyhole-slot 13, formed through one of the walls of the cap, with its
end seated in a recess 14, formed in the opposite inner wall of the cap. In this
position the key may be turned to engage with the spring-catch and lift its
head out of the notch in the side of the nut, when the cap is disengaged from the
nut and may be withdrawn from the bolt and the nut is free to be screwed in
either direction.
The end of the bolt may be reduced to a rectangular form, as shown, or to any
other desired angular form, the object being to prevent the cap from turning
thereon.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed, I declare that what
I claim is:-
1. The combination with a bolt having an angular end and a nut, of a cap-
piece having an angular opening formed in its end, a spring-catch mounted
within the cap and adapted to engage the nut, said spring being entirely inclosed
within the cap and protected thereby against accidental disengagement from the
nut, and means for disengaging the catch from the nut, substantially as shown
and described.
2. The combination with a bolt having an angular end, and a nut provided
with notches or recesses in its sides, of a cap-piece having an angular opening
formed in its end, a longitudinal recess formed in one of its inner faces, a spring-
catch mounted in said recess, and means for disengaging the catch from the
recess of the nut, substantially as shown and described.
3. The combination with a bolt having an angular end, and a nut provided
with notches or recesses in its sides, of a cap-piece having an angular opening
in its end, a longitudinal recess in one of its inner faces, a spring-catch formed
from a single length of flat spring metal bent intermediate its ends and folded
upon itself forming an attaching-arm and the spring-catch proper, the free end

page_text: of the latter being bent to form a catch-head, the attaching-arm being mounted
in the longitudinal recess, and means for disengaging the spring-catch from the
recess of the nut, substantially as shown and described.
4. The combination with a bolt having an angular end, and a nut provided
with notches or recesses in its sides, of a cap-piece having an angular opening
formed through its end, a spring-catch mounted within the cap and adapted
to engage with one of the notches of the nut and a keyhole-slot formed through
one side of the cap and a recess formed in the opposite inner wall, said keyhole-
slot and recess being adapted to receive a key, whereby the spring-catch may be
disengaged from the notch of the nut, substantially as shown and described.
Dated this 1st day of August 1899.
THOMAS R. SHILLITO,
15, Tooks Court, London, E.C., Agent for the Applicant.