Locking Device for Locking Screws and Bolts and Nuts, and the Adjustments of Velocipedes and other Machinery.
Year: 1890

page_text: Date of Application, 8th July, 1890
Complete Specification Left. 8th Apr.. 1891-Accepted, 9th May, 1891
PROVISIONAL SPECIFI TION.
Locking Device for Locking Screws and Bolts and Nuts, and the
Adjustments of Velocipedes and other Machinery.
JAMES RICKARD Engineer Doris Street Kennington S.E. do hereby declare
the nature of this invention to be as follows:-
A locking device for locking screws, bolts, & nuts &c. The adjustment of
velocipedes, lathes & other machinery by the following arrangements. To have
right and left hand screws cut upon the spindle of the part to be adjusted & locked.
The screws to be cut either upon the same spindle, screw, or bolt, or upon a sleeve
upon the spindle, screw, or bolt. The right & left hand screws to be arranged
according to circumstances. For instance the crank bearing of a velocipede the
arrangement would be as follows. The spindle would have a left hand thread cut
upon it the entire length of its adjustment upon which thread works the cone,
behind which cone a sleeve screws on to the left hand thread of the spindle, having
a right hand external thread upon which works the locking nut.
To adjust & lock the bearings proceed as follows, slack the lock nut thereby
releasing cone, then adjust as required & lock by screwing up lock nut, which
being upon the right hand thread of sleeve (while the cone is upon the left hand
thread of spindle) locks by being forced together. In the case of the right hand
thread being on the spindle the other threads would be reversed accordingly.
017100
COMPLETE SPECIFICATION.
Locking Device for Locking Screws and Bolts and Nuts, and the
Adjustments of Velocipedes and other Machinery.
JAMES RICKARD of Doris Street Kennington, Engineer, 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 :-
An adjusting bush A with a right and left hand thread; the right-hand thread
outside and the left-hand thread inside, or vice-versa. The cone or other equivalent
part B to be locked, screws on a spindle bolt or stud C. On this spindle, bolt or
stud the locking bush A with a reverse (outside) thread to that on the spindle bolt
or stud C is then screwed and fixed to same by a small pin D or other means and
on this locking bush works the locking nut E proper.
By this means any movement of the cone or other equivalent part is instantly
checked and the thread being in reverse directions any movement from vibration
or other cause tends to still further tighten the cone or other equivalent part.
The same effect can be produced by forming the two reverse threads on the
same spindle bolt or stud without the adjusting bush A.
This arrangement especially applies to bottom-brackets, heads, etcetra of
velocipedes.
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:
An adjustment by means of two reverse threads wholly preventing any move-
ment of the various parts to which it is applied and being at once simple and
effective.
1
T
1001
JAMES RICKARD.