IMPROVEMENTS IN BLOCK BUSHES AND SHRAVES, THE SAME BEING ALSO APPLICABLE TO THE BUSHES OR CENTRES OF WHEELS
Year: 1875

page_text: LETTERS PATENT to James Bond, of Chipping, in the County Palatine
of Lancaster, Iron and Brass Founder, for the Invention of
“IMPROVEMENTS IN BLOCK BUSHES AND SHRAVES, THE SAME BEING ALSO
APPLICABLE TO THE BUSHES OR CENTRES OF WHEELS."
PROVISIONAL SPECIFICATION left by the said James Bond at the
Office of the Commissioners of Patents, with his Petition, on the
24th June 1875.
I, JAMES BOND, of Ohipping, in the County Palatine of Lancaster,
Iron and Brass Founder, do hereby declare the nature of the said
Invention of " IMPROVEMENTS IN BLOCK BUSHES AND SHEAVES, THE SAME BEING
ALSO APPLICABLE TO THE BUSHES OR CENTRES OF WHEELS," to be as follows,
that is to say:-

page_text: According to the present Invention the rings between which the
rollers are held are solid, and the rollers are kept in position therein
either by short pins formed in the interior of the rings which enter holes
in the ends of the rollers, or vice versa; the rollers are formed with
short pins which enter holes in the rings. When the rings and rollers |
are placed in the collar or box of the bush or central part of a sheave or
wheel they are held in position therein either by a ring sprung into a
recess, or by a separate plate bolted, rivetted, or otherwise fixed to the
collar or box.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said James Bond in the Great Seal Patent Office on the
21st December 1875.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, JAMES
BOND, of Chipping, in the County Palatine of Lancaster, Iron and
Brass Founder, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Twenty-fourth day of June, in the year
of our Lord One thousand eight hundred and seventy-five, in the 1
38th year of Her reign, did, for Herself, Her heirs and successors,
give and grant unto me, the said James Bond, Her special license that
I, the said James Bond, my executors, administrators, and assigns, or
such others as I, the said James Bond, my executors, administrators,
or assigns, should at any time agree with, and no others, from time
to time and at all times thereafter during the term therein expressed,
should and lawfully might make, use, exercise, and vend, within the
United Kingdom of Great Britain and Ireland, the Channel Islands, and
Isle of Man, an Invention for "IMPROVEMENTS IN BLOCK BUSHES AND SHEAVES,
THE SAME REING ALSO APPLICABLE TO THE BUSHES OR CENTRES OF WHEELS," upon
the condition (amongst others) that I, the said James Bond, by an
instrument in writing under my hand and seal, should particularly
describe and ascertain the nature of the said Invention, and in what
manner the same was to be performed, and cause the same to be filed

page_text: in the Great Seal Patent Office within six calendar months next and
immediately after the date of the said Letters Patent.
NOW KNOW YE, that I, the said James Bond, do hereby declare the
nature of my said Invention and in what manner the same is to be
performed, to be particularly described and ascertained in and by the
following statement, reference being had to the accompanying Drawings,
and to the letters and figures marked thereon, that is to say :-
My said Invention relates to improvements in the construction of
antifriction bushes and sheaves for blocks, the same being also appli-
cable to the bushes or centres of wheels.
According to the present Invention the rings between which the
rollers are held are solid, and the rollers are kept in position therein
either by short pins formed on the inner side of the rings, which pins
enter holes in the ends of the rollers, or vice versa; the rollers are
formed with short pins, which enter holes in the rings. When the
rings and rollers are placed in the collar or box of the bush or central
part of a sheave or wheel they are held in position therein either by a
ring sprung into a recess, or by a separate plate bolted, rivetted, or
otherwise fixed to the collar or box.
By means of the construction of bush herein-before described the
rollers are got as close together as possible, and, so as to produce but a
minimum of friction in working without causing friction.
And in order that my said Invention may be properly understood I
now proceed more particularly to set forth the system, mode, or manner
in or under which the same is or may be used or practically carried into
effect, reference being had to the annexed Sheet of Drawings, and to
the letters and figures marked thereon, that is to say :-
-
On the Sheet of Drawings hereunto appended are shown four modi.
fications or slightly differing arrangements of my improved antifriction
bush, of which Figure 1 is a front elevation of the first modification,
and Figure 2 a vertical section thereof through the line a, b, Figure 1.
In this case the cylindrical rollers A are formed with a shallow hole at
the centre of both ends; and by these the rollers are retained in their
relative positions through the antering thereinto of the short pins pro
jecting out from the inner side of the rings B, as more particularly seen
in the section Figure 2.

page_text: combined and held together within the box O, substantially as herein-
before described and shown upon the annexed Sheet of Drawings.
•
In witness whereof, I, the said James Bond, have hereunto set
my hand and seal, this Eighteenth day of December One thousand
eight hundred and seventy-five.