Improvements in, and in the Manufacture or Method of Formation of, Lock Nuts.
Year: 1895

page_text: PROVISIONAL SPECIFICATION.
Improvements in, and in the Manufacture or Method of Formation
of, Lock Nuts.
I, WILLIAM BAYLISS, of the Firm of Bayliss, Jones and Bayliss, of Victoria
Works, Wolverhampton in the County of Stafford, Bolt, Nut and Fencing Manu-
facturers, do hereby declare the nature of this invention to be as follows
==
This invention relates to that class of lock nuts which are first tapped with a
thread of uniform diameter throughout, and then have the outer end of the tapped
hole reduced in diameter by sideway pressure; and relates, more especially, to lock
nuts which have a slit or slits cut in from the back or outer face thereof, the
diameter of the outer end of the tapped hole being reduced by sideway pressure
operating to close up such slit or slits at the outer face of the nut. Nuts of the
class above described have heretofore been made of a shape, prior to the reduction
of the diameter of the outer end of the tapped hole, corresponding to that of an
ordinary nut (though usually, in the case of nuts in which slits are cut in the outer
faces, somewhat deeper) and thus when the diameter of the outer end of the
threaded hole has been reduced in the manner described, the exterior of the nut
is made smaller at its outer end, than along the remaining portion of its depth,
and is both unsightly and interferes with the proper fit thereon of the spanner,
rendering the spanner liable to slip in use.
Now, this invention has for its object to produce a lock nut which, after the
outer end of the tapped hole has been reduced in diameter in the manner above
described, will have its sides parallel (or more nearly so than heretofore) throughout
their whole depth, as in the case of an ordinary nut.
The above object is accomplished, according to this invention, by forming the
portions of the sides of the nut which will be pressed in as the diameter of the
outer end of the tapped hole is reduced in the manner described, enlarged to such
extent that when pressed in their surfaces will be in the same planes, respectively.
as the remaining surfaces of such sides, whereby the sides of the finished nut will
be parellel throughout their entire depth, as in the case of an ordinary nut.
In applying this invention to the case of a nut which has slits cut in from the
outer face thereof as described, the upper portions of the sides of the nut are formed
to slant out somewhat from about the level of the bottom of the slits to the outer
face of the nut, the degree of inclination corresponding to the extent to which the
outer ends of such sides will be forced in in closing up the slits at the outer face of
the nut.
Dated this 23rd day of M- 1905
STEPHEN WATKINS,
Wolverhampton, Agent for the Applicant.

page_text: Improvements in, and in the Manufacture or Method of Formation
of, Lock Nuts.
I, WILLIAM BAYLISS, of the Firm of Bayliss, Jones and Bayliss, of Victoria
Works, Wolverhampton in the County of Stafford, Bolt, Nut and Fencing Manu-
facturers, 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 that class of lock nuts which are first tapped with a
thread of uniform diameter throughout, and then have the outer ends of the tapped
holes reduced somewhat by sideway pressure; and relates, more especially, to lock
nuts which have each a slit or slits cut in from the back or outer face thereof, the
outer end of the tapped hole being reduced by sideway pressure operating to close
up such slit or slits at the outer face of the nut. Nuts of the class above described
bave heretofore been made of a shape, prior to the reduction of the outer end of
the tapped hole, corresponding to that of an ordinary nut (though usually, in the
case of nuts in which slits are cut in the outer faces, somewhat deeper) and thus
when the outer end of the threaded hole has been reduced in the manner described,
the exterior of the nut is made smaller at its outer end than along the remaining
portion of its depth, which is both unsightly and interferes with the proper fit of
the spanner, rendering the spanner liable to slip in use.
Now, this invention has for its object to produce a lock nut which, after the
outer end of the tapped hole has been reduced in the manner above described, will
have its sides parallel (or more nearly so than heretofore) throughout their whole
depth, as in the case of an ordinary nut.
The above object is accomplished, according to this invention, by forming the
portion of the side or each side of the nut which will be pressed in as the outer end
of the tapped hole is reduced in the manner described, enlarged to such extent
that when pressed in its surface will be in the same plane as the remaining surface
of such side (or more nearly so than heretofore in such cases), whereby the sides
of the finished nut will be parallel (or more nearly so than heretofore in such
cases) throughout their entire depth, as in the case of an ordinary nut.
I have illustrated the invention, on the accompanying sheet of drawings, by
way of example, in relation to a nut which has four slits cut in from the outer face
thereof.
Figure 1 is a view of the nut as seen looking towards its inner face before the
slits have been closed up at the outer face.
Figure 2 is a view of the nut as seen looking towards the opposite face, before
the slits have been closed up at such face.
Figure 3 is a section through the centre of the nut, taken on line
Figure 1; and
of
Figure 4 is a corresponding section of the nut after the slits have been closed up
at the outer face.
a are the slits cut in the outer face of the nut. The portions b of the sides of
the nut are at first formed to slant out from about the points c, Figure 3, (situated
about the same distance from the outer face of the nut as the bottoms or inner ends
of the slits) to the outer face of the nut, making the nut wider across its outer
face than at the inner face by about the width of one of the slits. Consequently,
when the slits have been closed up as shewn, in respect of one of them, by Figure 4,
the nut is the same width across at the outer as at the inner face, or more nearly so
than heretofore in such cases, and the opposite sides of the nut are parallel
throughout the depth of the nut, or more nearly so than heretofore in such cases.

page_text: In Figure 3, the positions into which the slanted portions of the sides of the
nut will be closed in by the closing in of the slits at the outer face of the nut, are
indicated by broken lines; and in Figure 4 the original formation of such portions
is indicated also by broken lines.
If it is not intended to close up the slits completely at the outer face of the nut,
the nut may be originally formed of a less width across at such face than would
otherwise be desirable, so that when the slits have been closed in as much as
desired the opposite sides of the nut will be parallel throughout their entire depth,
or more nearly so than heretofore in such cases.
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. Nuts having the outer ends of their tapped holes reduced by sideway pressure,
and the portions of the sides which have been pressed in for such purpose in the
same planes, or more nearly so than heretofore in such cases, with the remaining
portions of the same sides, owing to the nuts having been originally formed with
portions of such sides slanted or extended outwards from the remaining portions
thereof, substantially as described.
2. Nuts having slits cut in their outer faces and closed up, or partially so, at
such faces by sideway pressure and the portions of the sides which have been
pressed in, in closing up or partially closing up the slits, in the same planes, or
more nearly so than heretofore in such cases, with the remaining portions of such
sides, owing to the nuts having been originally formed with portions of such sides
slanted or extended outwards from the remaining portions thereof, substantially as
described.
3. The manufacture or method of formation of lock nuts, which consists in
forming such nuts with sides having portions slanting or extending outwards from
the planes of the remaining portions of such sides, and then after the nuts have been
tapped with parallel threads as usual, closing in the outwardly slanting or extending
portions of such sides, and thereby closing in somewhat the outer ends of the nuts,
the portions of the sides which have thus been closed in being then in the same
planes as the remaining portions of such sides, or more nearly so than heretofore
in such cases, substantially as described.
4. The manufacture or method of formation of lock nuts, which consists in
forming such nuts with sides having portions slanting or extending outwards from
the planes of the remaining portions of such sides, and then after the nuts have
been tapped with parallel threads as usual, and slits cut in the outer faces thereof,
closing up or partially closing up the slits by sideway pressure and thereby closing
in somewhat the outer ends of the nuts, the portions of the sides which have thus
been closed in being then in the same planes as the remaining portions of such sides,
or more nearly so than heretofore in such cases, substantially as described.
Dated this 21st day of February 1896.
STEPHEN WATKINS,
Wolverhampton, Agent for the Applicant.