An Improved Piston or Cross-head Pin for Gas or other Engines or Pumps.
Year: 1899

page_text: Date of Applicatio
Complete Specification Left, 20th Jan., 1900-Accepted, 24th Feb., 1900
.PROVISIONAL SPECIFICATION.
An Improved Piston or Cross-head Pin for Gas or other Engines or
Pumps.
We, HENRY NIELD BICKERTON and HENRY WENTWORTH BRADLEY, both of
Wellington Works, Ashton-under-Lyne, Engineers, do hereby declare the nature
of this invention to be as follows:-
-
The improvements relate to an improved piston or cross-head pin for gas or
other engines or pumps, and have for object to effect the adjustment in wear
between such pin, and the end of the connecting rod fulcrumed thereon, by
means of the pin alone.
To accomplish this and to effect our improvements, we form the pin with a
recess therein, or a portion cut away, at that part, or parts, which transmits
or receives thrust or pull to or from the connecting rod."
Within this recess we provide a loose block of metal which fills the recess,
or supplies the place of the part cut away, thus completing the form of the pin.
This loose block may be secured to the main body of the pin by set-screws or
other well known means, and, as the parts wear, in use, the said block is loosened
and brought forward to a corresponding degree, the space left at the back thereof
being filled with suitable packing, after which the block is again tightened up.
Or the said loose block may be adjusted by means of a wedge or wedges, or a
system of wedges and screws.
By this means all necessity for adjustable parts in the connecting rod end is
obviated, whereby the construction of such rod end is greatly simplified
To enable the pin to be readily removed from the piston or cross-head,
notwithstanding any projection of the adjusted block, we may form one end
of the pin of larger diameter than the remainder, so as to fit into a bore, in the
piston or cross-head, of corresponding size, and of sufficient diameter to permit
the packed block to pass.
1 1000
WILLIAM GADD, C.E.,
64, Barton Arcade, Manchester, Agent for Applicant.
An Improved Piston or Cross-head Pin for Gas or other Engines or
Pumps.
We, HENRY NIELD BICKERTON and HENRY WENTWORTH BRADLEY, both of
Wellington Works, Ashton-under-Lyne, Engineers, 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:-
The improvements relate to an improved piston or cross-head pin for gas or
other engines or pumps, and have for object to effect the adjustment in wear

page_text: between such pin and the end of the connecting rod fulcrumed thereon, by
means of the pin alone.
To accomplish this and to effect our improvements, we form the pin with a
recess therein, or a portion cut away, at that part, or parts, which transmits
or receives thrust or pull to or from the connecting rod.
Within this recess we provide a loose block of metal which fills the recess,
or supplies the place of the part cut away, thus completing the form of the pin.
This loose block may be secured to the main body of the pin by set-screws or
other well known means, and, as the parts wear, in use, the said block is loosened
and brought forward to a corresponding degree, the space left at the back thereof
being filled with suitable packing, after which the block is again tightened up.
Or the said loose block may be adjusted by means of a wedge or wedges, or a
system of wedges and screws.
By this means all necessity for adjustable parts in the connecting rod end is
obviated, whereby the construction of such rod end is greatly simplified.
To enable the pin to be readily removed from the piston or cross-head,
notwithstanding any projection of the adjusted block, we may form one end
of the pin of larger diameter than the remainder, so as to fit into a bore, in the
piston or cross-head, of corresponding size, and of sufficient diameter to permit
the packed block to pass.
But that the improvements may be better understood, we will, with the aid
of the accompanying drawings, proceed more fully to describe means employed
by us.
DESCRIPTION OF DRAWINGS.
The figures show an application of the invention to the piston pin of a gas
engine, Fig. 1being a longitudinal section, and Fig. 2 a sectional plan, of a
gas engine piston and pin provided in accordance with our improvements.
The same letters indicate corresponding parts wherever they occur.
a is the piston, and 6 the main body of the pin, the latter being formed so
as to receive the loose block c, which completes the form of the pin, as shown.
The block c is, in this case, secured to the main body of the pin by set screws d,
which, as the parts wear, in use, may be loosened so as to allow of the insertion
of suitable packing, for adjustment, between the block c and pin b, such block
being afterwards tightened up by means of the set screws d.
To enable the pin to be readily removed from the piston a, or replaced therein,
notwithstanding any projection of the block c, owing to adjustment thereof,
one end of the pin 6 is formed of larger diameter than the remainder, as shown
at b', so as to fit a corresponding bore a' in the piston a.
The special adjusting block c may be employed at either the thrust or pull
side of the pin, or it may be at both, and other variations in detail, such as in
the method of "packing" the block or blocks, may be made without departing
from the peculiar character of the invention.
Having now particularly described and ascertained the nature of our said
invention, and in what manner the same is to be performed, we declare that what
we claim is:
-
A piston or cross-head pin, for gas or other engines, or pumps, formed with
a recess or space or spaces at the wearing part or parts, such recess or space being
occupied by an adjustable block or blocks, for the purpose and in manner sub-
stantially as herein shown and described.
Dotod this 19th dox of Jenuero 1900
WILLIAM GADD, C.E.,
64, Barton Arcade, Manchester, Agent for Applicant.