An Implement applicable for use in Removing Cranks and the like from Shafts in Cycles and other Machines.
Year: 1892

page_text: Date of Application, 19th Nov., 1892
Complete Specification Left, 21st Aug., 1893-Accepted, 30th Sept., 1893
PROVISIONAL SPECIFICATION.
An Implement applicable for use in Removing Cranks and the like
from Shafts in Cycles and other Machines.
I, JOHN SMITH BROWN, of 7, Great Eastern Street, in the County of
Middlesex, Manufacturer, do hereby declare the nature of this invention to be as
follows:-
This invention relates to a mechanical device or implement for enabling cranks
and similarly-mounted parts of cycles and other machines to be readily withdrawn
from the shafts to which they are applied; a crank-arm being usually driven and
keyed on, and fitting very firmly upon the axle.
In carrying out my invention, I employ a steel casting or equivalent body formed
with a central boss, through which a stud screws, and having three pairs of radially-
extending lugs. Between each pair of lugs is mounted a lever, the fore end of
which is claw-shaped, whilst its rear end is furnished with a set-screw adapted to
bear against the side of the boss before referred to.
In using the implement, the claw-shaped ends of the levers are arranged to
engage behind the hub or boss of the crank-arm, the set-screws are adjusted so as
to retain the lever-claws in the engaging position, and the central stud is theu
turned; its inner extremity taking a bearing against the end of the axle and
gradually forcing the latter out of the crank-boss, or forcing the crank-arm off
the axle.
It will be obvious that an implement of the kind described is applicable for use in
removing bodies other than cranks from shafts; and further, that the invention is
applicable for use with machines other than those conventionally known as "cycles."
Dated the 19th day of November 1892.
G. G. M. HARDINGHAM,
191, Fleet Street, London, E.C., Chartered Patent Agent.
COMPLETE SPECIFICATION.
An Implement applicable for use in Removing Cranks and the like
from Shafts in Cycles and other Machines.
I, JOHN SMITH BROWN, of 7, Great Eastern Street, in the County of
Middlesex, Manufacturer, 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 a mechanical device or implement for enabling cranks
and similarly-mounted parts of cycles and other machines to be readily withdrawn
from the shafts to which they are applied; a crank-arm being usually driven and
keyed on, and fitting very firmly upon the axle.
In the accompanying drawings, Fig. 1 is a side elevation of a device or implement
constructed in accordance with my invention, Fig. 2 is a front elevation of the
same, and Fig. 3 is a corresponding rear elevation.
A is a steel casting or equivalent body formed with a central boss, through which
a stud B B¹ screws, and having three pairs of radially-extending lugs a a, a a', a² a².
Between each pair of lugs is mounted a lever C C¹, the fore end C of which is
claw-shaped, whilst its rear end C' is furnished with a set-screw D adapted to bear
against the side of the boss of the casting A. Instead of three levers, any other
convenient number of levers may be employed.

page_text: In using the implement, the claw-shaped ends C of the levers C C₁ are arranged
to engage behind the hub or boss of the crank-arm, the set-screws D are adjusted
so as to retain the lever-claws in the engaging position, and the central stud B B¹
is then turned; its inner extremity B' taking a bearing against the end of the axle
and gradually forcing the latter out of the crank-hub or forcing the crank off
the axle.
It will be obvious that an implement of the kind described is applicable for use
in removing bodies other than cranks from shafts; and further, that the invention
is applicable for use with machines other than those conventionally known as
"cycles."
Having now particularly described and ascertained the nature of this invention
and in what manner the same is to be performed, I claim :-
:-
1. The improved implement constructed substantially as described with reference
to the accompanying drawings and adapted for removing cranks, hubs and the like
from shafts.
2. In an implement for removing cranks, hubs and the like from shafts, the
combination, with a screw-stud B B working in a central body, such as A, of three
or other number of rocking levers mounted in the body A and having claw-shaped
ends for engaging with the crank boss or hub to be removed, the rear ends of the
said levers being furnished with set-screws for adjusting and retaining the lever-
claws in the engaging position, substantially as herein set forth.
Dated the 18th day of August 1893.
G. G. M. HARDINGHAM,
191, Fleet Street, London, E.C., Chartered Patent Agent.