Improvements in or relating to Nut Locks.
Year: 1894

page_text: Date of Application, 2nd July, 1894
Complete Specification Left, 25th Feb., 1895-Accepted, 30th Mar., 1895
PROVISIONAL SPECIFICATION.
Improvements in or relating to Nut Locks.
We, FREDERICK EASOм of 53 City Road, Beeston, in the County of Nottingham,
Engineer, and DAVID WILLIAM BASSETT, of Lenton Boulevard, Nottingham,
Cycle Works Manager, both in the employ of Humber & Company, Limited, of
Beeston, do hereby declare the nature of this invention to be as follows:-
This invention which relates to nut-locks is specially applicable for securing the
pedal pins of cycles to their cranks and for convenience will be hereinafter described
in that application though it is to be understood that the nut-lock is applicable to
various other purposes such as for engines and machinery and for other parts of
cycles than the crank.
As applied to a pedal pin and crank the former is fitted in a hole in the latter in
the usual way, the pedal pin being provided with a collar or shoulder to bear
against the outer side of the crank. The inner side of the crank at the part where
it receives the pedal pin is recessed to receive a spring washer somewhat resembling
the metal packing ring of a piston, its two ends overlapping to a suitable extent
and tending always to spring apart. The nut which screws on the threaded end of
the pedal pin is formed with a reduced portion which fits into the opening of the
spring washer. The overlapping ends of the spring washer form as it were cutting
edges which are presented to the inner side of the nut and the bottom of the
crank recess in such a direction that they tend to cut into these surfaces when
the nut is unscrewed; by this means any accidental unscrewing of the nut is
prevented.
The spring washer fitting into the recess is not allowed to expand, and thus forms
a preventative against the nut working loose.
If desired the nut may be recessed to receive the spring washer instead of the
crank as above described.
1005
W. P. THOMPSON & BOULT,
Agents for the Applicants.
We, FREDERICK EASOм of 53 City Road, Beeston, in the County of Nottingham,
Engineer, and DAVID WILLIAM BASSETT, of Lenton Boulevard, Nottinghain,
Cycle Works Manager, both in the employ of Humber & Company Limited, of
Beeston, 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 which relates to nut-locks is specially applicable for securing the
pedal pins of cycles to their cranks and for convenience will be hereinafter described
in that application though it is to be understood that the nut-lock is applicable to
various other purposes such as for engines and nachinery and for other parts of
cycles than the crank

page_text: In the accompanying drawings
Figures 1 and 2 are two different elevations showing our improved nut-lock
applied to a cycle pedal pin and crank and
Figure 3 is a perspective view of the nut and spring washer.
Like letters indicate like parts throughout the drawings.
As applied to a pedal pin A and crank B as shown in the drawings, the former is
fitted in a hole B' in the latter in the usual way, the pedal pin being provided with
a collar or shoulder A¹ to bear against the outer side of the crank. The inner side
of the crank at the part where it receives the pedal pin is recessed as at B² to
receive a spring washer C somewhat resembling the metal packing ring of a piston,
its two ends CC2 overlapping to a suitable extent and tending always to spring
apart. The nut D which screws on the threaded end of the pedal pin A is formed
with a reduced portion or projection D' which fits into the opening of the spring
washer C. The overlapping ends of the spring washer C formn as it were cutting
edges which are presented to the inner side of the nut D and the bottom of the
crank recess B in such a direction that they tend to cut into these surfaces when
the nut is unscrewed; by this means any accidental unscrewing of the nut is
prevented.
The spring washer C fitting into the recess B2 is not allowed to expand, and thus
forms a preventive against the nut working loose.
If desired the nut D may be recessed to receive the spring washer C instead of
the crank B as above described, and a projection for fitting into the opening of
the spring washer C may be provided on the crank instead of as before described
on the nut D.
When the washer C is employed for locking a nut having a left-hand thread the
position of the two edges CC is the reverse of that in which they are arranged
when it is adapted to lock a right-hand nut.
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed, we declare that what we
claim is ;-
1. In a nut-locking device enclosing the spring washer so that it cannot spread.
2. The combination with a nut having a projectiou such as D' of a spring washer
such as C substantially as described and illustrated in the accompanying drawings.
3. The combination with two devices such as a pedal pin A and crank or arm B
and a nut such as D for securing them together of a spring washer such as Ca
recess being provided either in the crank or arm or in the nut for receiving the
washer substantially as described and illustrated in the accompanying drawings.
4. The combination with two devices such as a pedal pin A and crank or arm B
and a nut such as D for securing them together of a spring washer such as C the
crank or arm or nut being provided with a recess for receiving the washer and with
a projection for fitting into the opening of the washer substantially as described and
illustrated in the accompanying drawings.
Dated this 22nd day of February 1895.
FREDERICK EASOM.
D. W. BASSETT.
Boult & Wade,
Agents for the Applicants.