An Improvement in or connected with Check or Locking Bolts.
Year: 1892

page_text: Date of Application, 18th Oct., 1892
Complete Specification Left, 17th July, 1893-Accepted, 30th Sept., 1893
PROVISIONAL SPECIFICATION.
An Improvement in or connected with Check or Locking Bolts.
I, JAMES ROBERT MOORE, of 17 Vincent Street, in the City and County of
Newcastle-on-Tyne, Cycle Repairer do hereby declare the nature of this invention
to be as follows:-
-:
This invention relates to an improvement in or connected with check or locking
bolts.
To explain the nature thereof, I will assume the case of a male and female screw
joint in which the former is required to be checked or locked in some special
position.
In such a case I form a lug on the exterior surface of the female and in this lug
a special bolt or pin is designed to work.
The end of the
When the male
A portion of its side is cut away to the required radius and screwed or threaded
to suit the threads with which it is designed to come in contact.
bolt is provided with a nut or equivalent tightening up gear.
screw enters the screwed socket or the equivalent thereof its threads coincide with
the threads formed on the cut away portion of the special lock bolt as well as with
the threads of the socket or its equivalent and on tightening up the nut on the lock
bolt the threads on the latter are pressed tightly against the threads on the male
screw so as to effectually prevent it from turning.
The invention thus disclosed is capable of extensive and varied application in
cases where thread grips thread as the simple tightening of the lock bolt causes its
threads to grip the contiguous thread and so to prevent revolution.
Dated this 17th day of October 1892.
A. CRAWHALL CHAPMAN,
3, St. Nicholas Buildings, Newcastle-on-Tyne, Patent Agent.
COMPLETE SPECIFICATION.
An Improvement in or connected with Check or Locking Bolts.
JAMES ROBERT MOORE 17 Vincent Street Newcastle-on-Tyne Cycle Mechanic,
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 an improvement in or connected with check or lock
bolts.
To explain the nature thereof I will assume the case of a male and female screw
joint in which the former is required to be checked or locked in some special
position. In such a case I form a lug on the exterior surface of the female and in
this lug a special bolt or pin is designed to work. A portion of its side is cut away
to the required radius & screwed or threaded to suit the threads with which it
is designed to come in contact. The end of the bolt is provided with a nut or
equivalent tightening up gear. When the male screw enters the screwed socket or
the equivalent thereof its threads coincide with the threads formed in the cut away
portion of the special lock bolt, as well as with the threads of the socket or its
equivalent, and on tightening up the nut on the lock bolt the threads on the latter
are pressed tightly against the threads on the male screw so as to effectually
prevent it from turning.
Having now ascertained scope of my invention I do not claim any portion thereof
excepting the use of a cotter pin or bolt E. as per annexed drawing with

page_text: threads on a screw cut longitudinally on inside face of radius A. said threads of
screw being same pitch as those on outside of cone B & fitting thereon.
I do not confine myself to using a cup cone or only applying to crank brackets
as several different forms of cones may be used, and the invention applied to many
uses supplanting the use of nuts and washers when used for checking purposes.
In the drawing which I berewith append I show one of the many uses to which
my invention can be applied. C is a portion of the crank bracket of a rear driving
safety bicycle, B is the cup cone in which the balls which form the bearing for axle
revolve. E is a cotter pin the cut out radius of which fits the circle of cup cone B.
On the face of radius at A. are cut longitudinally threads which correspond in pitch
to the screw cut on outside of cone B. F fits into recess in bracket and prevents E
from turning, when cup is being fitted and when C is being wedged by tightening
nut D.
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 :-
The invention thus disclosed is capable of extensive and varied application in
cases where thread grips thread as the simple tightening of the lock bolt causes
its threads to grip the contiguous thread & so to prevent revolution.
Dated this Fifteenth day of July 1893.
JAMES ROBERT MOORE,
17, Vincent Street, Newcastle-on-Tyne.