Improvements in Ring and Roller Bushes for the Sheaves employed in Ships' Rigging and for other similar purposes.
Year: 1898

page_text: Date of Application, 23rd Apr., 1898
Complete Specification Left, 23rd Jan., 1899-Accepted, 25th Feb., 1899
Improvements in Ring and Roller Bushes for the Sheaves employed in
Ships' Rigging and for other similar purposes.
I, JAMES PETERKIN, Carpenter, Block and Spar Maker, 1, Lesmurdie Place,
Lossiemouth, Morayshire, do hereby declare the nature of this invention to be as
follows:
This invention relates to improvements in ring and roller bushes for the sheaves
employed in ships' rigging and for other similar purposes and has for its object to
so construct and secure the box within the sheave that the rings and rollers can be
renewed with very little expense and in a very short time.
With the present form of box, the ring and rollers are permanently retained in
position therein so that the rollers cannot be renewed without having a new box
also, although it may be in good condition.
In accordance with my invention, I form the box with a permanent flange at the
one side, the larger portion of which flange projects outwardly to enable screws to
be passed therethrough to secure the box to the sheave and the smaller portion
projecting inwardly to retain the ring and rollers therein. A similar flange to
the first is then placed at the other side of the box and provided with tapped holes
to receive the screws before referred to. A portion of the sheave therefore lies
between the two flanges with the screws retaining the second flange passed there-
through. It will thus be seen that when it is desired to renew the rollers all that
is necessary is to remove the second flange by loosening the screws at the front
flange when they can be immediately removed.
My improvements are therefore of great benefit to fishermen and others as they
are enabled to put the ring and rollers in themselves when they happen to break
down.
Improvements in Ring and Roller Bushes for the Sheaves employed in
Ships' Rigging and for other similar purposes.
I, JAMES PETERKIN, Carpenter, Block and Spar Maker, 1, Lesmurdie Place,
Lossiemouth, Morayshire, 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 improvements in ring and roller bushes for the sheaves

page_text: employed in ships' rigging and for other similar purposes, and has for its object to
so construct and secure the box within the sheave that the rollers can be reclassed
with very little expense and in a very short time.
With the present form of box, the ring and rollers are permanently retained in
position therein so that the rollers cannot be reclassed without having a new box
also, although it may be in good condition.
But in order that my said invention may be readily understood and easily
carried into effect I will proceed to describe the same with reference to the
accompanying drawings in which
Fig. 1 is as elevation and
Fig. 2 a section of a sheave shewing my improvements applied thereto.
Referring to the said drawings I form the box A with a permanent flange
at the one side, the larger portion a of which projects outwardly to enable screws B
to be passed therethrough to secure it to the sheave C whilst the smaller portion a¹
projects inwardly to retain the ring and rollers in the box. A similar flange D
is then placed at the other side of the box and provided with tapped holes to
receive the screws B before referred to. A portion of the sheave therefore lies
hetween the two flanges with the screws retaining the screw flange D passed
therethrough. It will thus be seen that when it is desired to renew the rollers
all that is necessary is to remove the second flange D by loosening the screws B,
when they can be immediately removed.
My improvements are therefore of great benefit to fishermen and others as they
are enabled to put the ring and rollers in themselves when they happen to break
down.
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-
1. The method of retaining ring and roller bushes within the sheaves used in
ships' rigging, and for other purposes, substantially as and for the purpose
hereinbefore described and shewn in the accompanying drawings.
2. Forming the box in which ring and roller bushes of sheaves are retained,
with a permanent and a removable flange arranged to receive a portion of the
sheaves between same and secured to each other by screws substantially in
the manner as and for the purpose hereinbefore described and shewn in the
accompanying drawings.
Dated this 20th dor of Tonner 1900
JOHNSONS,
Applicant's Agents, 115, St. Vincent Street, Glasgow.