Improvements in Connecting Rods for Single Acting Engines.
Year: 1893

page_text: Date of Application, 20th Apr., 1893
Complete Specification Left, 18th Jan., 1894-Accepted, 24th Feb., 1894
PROVISIONAL SPECIFICATION.
Improvements in Connecting Rods for Single Acting Engines.
I EMILE GEORGE GUYOT Engineer Lea Cut Iron Works Church Row,
Limehouse, London E. do hereby declare the nature of this invention to be as
follows:-
The object of this invention is to construct such connecting rods that the cross-
head and crank pin brasses shall always be in contact with their respective pins, and
so prevent knocking.
The centrifugal force or momentum of the moving parts tends to pull the brasses
from the pins and cause knocking, to obviate this I fit a strap over a small brass
above crosshead pin, the ends of the strap extending downwards on each side of
connecting rod, and forming crank pin bolts, on the lower end of these under crank
pin is fitted a cap or keep, between this cap and the crank pin a brass is fitted,
underneath the cap or keep on each end of strap or crank pin bolt a short stout
spiral spring is fitted which is compressed against the cap by washer and nuts on
euds of enveloping strap.
The effect of the apparatus is that when the spiral springs are compressed there
is a pressure brought on top side of crosshead pin, and on under side of crank pin,
tending to pull these together, the connecting rod merely acting as a strut between
them.
The amount of compression on the springs is arranged to be a little greater than
the centrifugal force or momentum of the moving parts and depends upon their
weight & velocity.
Dated this 19th day of April 1893.
COMPLETE SPECIFICATION.
Improvements in Connecting Rods for Single Acting Engines.
I, EMILE GEORGE GUYOT Engineer of Lea Cut Iron Works, Church Row
Limehouse London E. 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 object of this invention is to construct connecting rods for single acting
engines in such manner that the crosshead and crank pin brasses shall always be
kept in contact with their respective pins and prevent "knocking."
37
"
The centrifugal force or momentum of the moving parts, tends to pull the brasses
from the pins and cause "knocking." To obviate this as shown in Figs. 1 and 2
in drawings accompanying this Specification I fit a strap A over a small brass B
above crosshead pin C, the ends of strap A extending downwards on each side of
connecting rod D and forming crank pin bolts A' and A³, on the lower end of these
under crank pin E is fitted a cap or keep, between this cap and the crank pin a
brass is fitted; in the drawing this cap or keep and brass is shown preferably made
in one piece F, on each lower end of strap A a short stout spiral spring G is fitted
which is compressed against the cap or brass F by washers and nuts H on ends A'
and A' of enveloping strap A. Inside of spiral springs short tubes or distance pieces
are interposed between nuts and washers H and brass cap F, these tubes are made
[Price 8d I

page_text: of a length to allow for adjustment but not allowing parts to get out of control
should a spring break.
The Figs. 3 and 4 on drawing show the same arrangement of connecting rod but
with a coach spring I substituted for spiral springs.
According to a modification friction rollers may be substituted for brass F on
underside of crank pin.
The effect of the apparatus is that when the springs are compressed there is a
pressure brought on top side of crosshead pin C and on underside of crank pin E
tending to pull them together, the connecting rod D merely acting as a strut
between them.
The amount of compression or load on the springs is arranged to be a little greater
than the centrifugal force or momentum of the moving parts and depends upon their
weight and velocity.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed I declare that what I
claim is―
In connecting rods for single acting engines placing a strap enveloping brasses on
upper side of crosshead pin and on under side of crank pin, the strap being adjusted
by springs so that a force is always tending to bring said pins towards each other,
the load on springs being adjusted by nuts and washers on ends of enveloping strap
to balance momentum of moving parts, thus preventing "knock" substantially as
described and shown.
Dated this 18th day of January 1894.