Bosses.
Year: 1886

page_text: Bosses.
I, ROBERT MACER of No. 23 Wingmore Road Herne Hill Road in the County
of Surrey, Millwright, do hereby declare the nature of this invention to be as
follows:-
It is often desirable to put pullies, wheels or bosses on shafts without disturbing
the shafts, and in many cases they cannot be put on whole over collars or other
obstructions in the line of shaft. In such cases they are put on in halves, the halves
being secured together in various ways. Now my invention relates to a simple and
economical method of forming and fitting the halves and securing them firmly on
a shaft as I will now describe. I make the two halves equal and symmetrical
each half having on one side a lip externally dovetailed and on the other side a lip
internally dovetailed, these lips projecting in each case beyond the line of division.
On turning the one half to face the other, the internal dovetail of the one fits within
the external dovetail of the other on each side of the circular bore. Thus one half
can be placed on the shaft and the other half being also placed on another part of
the shaft can be slid along until the respective dovetails engage with one another.
A key then driven into a key bed which is preferably formed at one of the lines
of junction, secures the two halves firmly together and firmly on the shaft.
Tad : 10:1
ст
1000
ABEL & IMRAY,
Agents for the Applicant,
28, Southampton Buildings, London, W.C.

page_text: A Method of Fixing on Shafts Divided Pullies, Wheels, or
Bosses.
I, ROBERT MACER of No. 23 Wingmore Road Herne Hill Road in the County
of Surrey Millwright 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:—
It is often desirable to put pullies, wheels or bosses on shafts without disturbing
the shafts, and in many cases they cannot be put on whole over collars or other
obstructions in the line of shaft. In such cases they are put on in halves, the halves
being secured together in various ways. Now my invention relates to a simple and
economical method of forming and fitting the halves and securing them firmly on a
shaft as I will now describe referring to the accompanying drawing, which is a
transverse section of a shaft with a small pulley or boss fixed on it according to
my invention. I make the two halves A A equal and symmetrical, each half
having on one side a lip B externally dovetailed and on the other side a lip C
internally dovetailed, the lips C projecting in each case beyond the line of division
diametrically. On turning the one half to face the other, the internal dovetail of
the one fits within the external dovetail of the other on each side of the circular
bore. Thus one half can be placed on the shaft and the other half being also placed
on another part of the shaft can be slid along until the respective dovetails engage
with one another. A key D then driven into a key bed, which is preferably formed
as shewn at one of the lines of junction, secures the two halves firmly together and
firmly on the shaft.
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
-
The method of fixing on shafts divided pullies wheels or bosses by engaging with
each other dovetails of equal and symmetrical halves, substantially as herein
described and illustrated by the accompanying drawings.
Dated this 16th day of October 1000.
ABEL & IMRAY,
Agents for the Applicant,
28, Southampton Buildings, London, W.C.