Improvements in and connected with Lock Nuts.
Year: 1898

page_text: PROVISIONAL SPECIFICATION.
Improvements in and connected with Lock Nuts.
PETER JOSEPH WILSON, 11, Gatefield Road, in the City of Sheffield, in the County
of York, Engineer, do hereby declare the nature of this invention to be as follows:--
I make a circular, hexagonal or other convenient form of cone shaped nut with
vertical ort or left-handed oblique slit, right through from top to bottom, and
tapped before slitting or rolled in bar and bent and closed afterwards leaving
slit and also closed to slightly less than the diameter of the bolt so that it possesses
annular elasticity and grip. I place this in an outside shell or sleeve which is also
coned internally and which has an internal key, or pins corresponding to the slit
in the coned shape part of nut, and the outside form of which may be either
hexagon, round, square or any other suitable shape, the slot in the cone shaped
part together with the key in the outer part is used for turning the nut into its
fixed position on the bolt or stud.
I, PETER JOSEPH WILSON, 11, Gatefield Road, in the City of Sheffield, in the
County of York, Engineer, do hereby declare the nature of 'my said invention and
in what manner the same is to be performed, to be particularly described and ascer-
tained in and by the following statement:-
-
I make a circular, hexagonal or other convenient form of cone shaped nut with
vertical or right or left hand oblique slit, right through from top to bottom, and
tapped before slitting, or rolled in bar and bent and closed afterwards leaving
slit, and also closed to slightly less than the diameter of the bolt so that it possesses
annular elasticity and grip. I place this in an outside shell or sleeve which is also
coned internally and which has an internal key or pins corresponding to the slit
in the coned shape part of the nut, and the outside form of which may be either
hexagon, round, square or any other suitable shape, the slit in the cone shaped
part together with the key in the outer part is used for turning the nut into its
fixed position on the bolt or stud.
مار.

page_text: I attain the object of my invention by means of the combination of appliances
illustrated in the accompanying drawing, in which the same letters refer to similar
parts throughout the several views.
Fig. 1, is a side elevation of a cone shaped spring liner or bush, A, hereinafter
referred to as the bush, which forms the first part of my improved lock nut, which
is tapped or threaded on its inside with threads to correspond to the threads on the
bolt with which it has to be used. One side I form with a longitudinal, diagonal
or oblique slit, B, extending right through one side for its full depth, the outside
of the bush I make smooth and of a suitable taper, the smaller end being placed
towards the head of the bolt. By tapping or threading the bush slightly smaller
than the bolt with which it has to be used a sufficient amount of spring or elasticity,
will exist owing to the presence of the slit, to cause the bush to grip the bolt.
Fig. 2 is a plan of the last named bush.
Fig. 3, is a side elevation of a shell or sleeve, C, hereinafter referred to as the
sleeve, which forms the second part of my improved lock nut, externally it resembles
an ordinary nut and may be either hexagon, square or other convenient shape,
internally it is formed like a hollow cone to fit over the previously described bush,
A, and is provided with a longitudinal, diagonal, or oblique key pin or feather, D,
extending the full depth of the same. This key pin or feather corresponds and
fits loosely into the longitudinal, diagonal or oblique slit, B, in the bush.
Fig. 4, is a plan of the last named sleeve.
Fig. 5, is a section of my improved lock nut shewing the bush inside the sleeve
ready for use. In this view a projection, E, is shewn running round the major
opening of the orifice in the sleeve, C. This projection, E, is used for securing
the bush, A, inside the sleeve, C, in such a way that the bush may be free to move
longitudinally and turn axially."
Fig. 6 is a similar section of my improved lock nut shewing the projection, E,
turned or closed down so as to secure the bush, A, within the sleeve, C, as already
described, this projection can be turned or closed inwards. by hydraulic or other
suitable power press, or in some cases the projection may be closed by hammering.
Fig. 7, is an elevation of one of my improved lock nuts comprising the bush and
the sleeve screwed into position upon a bolt.
Fig. 8, is a section of the same which shews sufficient clearance between the small
end of the conical bush, A, and the face of the sleeve, C, to allow of the bush being
drawn down deeper into the sleeve and thereby tightened on to the threads of the
bolt and locked.
The action of my improved lock nut is as follows.
When the sleeve, C, is turned by a screw key, spanner, or other suitable imple-
ment, the bush, A, by means of the key pin or feather, D, fitting loosely into the
slit, B, is simultaneously turned with it. As soon as the face of the sleeve comes
in contact with the object, F', on to which it is being screwed down, its advance is
arrested, but by continuing the turning process in the same direction, the bush
will advance further along the thread of the bolt and deeper into the sleeve by
which it is surrounded and actuated, when by reason of the formation of the two
parts, the bush as it advances within the sleeve, is closed more tightly upon the
threads of the bolt until the several parts are securely locked together.
In like manner when the sleeve is turned by means of a spanner or other imple-
ment in an opposite direction the parts may be unlocked and unscrewed from the bolt.
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. In lock nuts, the arrangement and combination of parts and appliances com-
prising an inner split bush, A, tapered on its outer side and tapped or threaded
inside, an outer sleeve, C, tapered inside having a key, pin or feather, D; which
fits loosely into the slit, B, of the inner bush, A, a projection, E, on the outer

page_text: sleeve, C, made so that it can be turned over and extended inwardly from its major
opening, in the manner and for the purposes substantially as herein described and
illustrated.
.
T
1000
R. HEBER RADFORD.
Agent for the Applicant.