Year: 1890

page_text: Date of Application, 2nd Dec., 1890-Accepted, 3rd Jan., 1891

page_text: and adapted to fit the inner or back face of the part box B; but its inner face is
concave, the concavity f, being very deep, as seen in Figure 7 of the drawings. The
flange, on one side of this block extends out past the recess, as is also seen in
Figure 7, while at the other side it is cut away so as to be of less width than the
thickness of the block even, thereby providing a narrow ledge or seat, f², at this
side of the box which, preferably, will be the side arranged on the outer or front
side of the connecting rod. The bottom of the fork is concaved, so as to provide
circular seat a³ at the bottom or inner end of the fork. This seat is, however, cut
out centrally so as to form quite a wide groove a, which extends in somewhat
deeper than the outer portions of the seat making a kind of concave recess between
the latter.
EL
This construction at the bottom of the fork is for the purpose of properly seating
a short cam cylinder G the outer diameter of which corresponds to the spread
of the forks, so that the cylinder may be fitted within the arms of the fork and scated
at the bottom thereof on the circular seat, just described. This cylinder is solid
and on
one side thereof is thrown up a regular cam or eccentric, g, extending
around the middle portion of the cylinder and somewhat more than one-half its
circumference, as seen in Figures 8 and 9 of the drawings. This cam cylinder is
arranged in the fork between the bottom of the latter and the bearing block F, as
seen in Figure 4, the cam projection y being received in the groove a of the seat,
while the outer ends of the cylinder proper, on either side of this projection, will find
a bearing upon the outer sections of the seat a³ on each side of said groove.
The eccentric or cam cylinder G is cut off slightly at one end, so that it does not
conie out flush with the side of the head, this being preferably at the front side of the
latter ; and a coiled spring H, is applied to this end of the cylinder, the latter being
provided with a stud or pin g', rigidly fastened to the cylinder, and the spring being
attached at its inner end to this stud and at its outer end to the head of the connecting
rod, by giving the spring a slight bend or hook h, at this end, which is inserted in a
little niche a, in the head, as seen in Figure 1. The width of this spring is preferably
such as to fill the space provided by cutting away the end of the cylinder, so that
the outer edge of the spring will, be flush with the face of the head. The outer
end of the stud g' is threaded and upon it is turned a cap or cover I which
completely fits over and covers the spring within, thereby holding it in position
and keeping out dirt. The outer end of the stud or pin g¹ has a cross-notch g², for
convenience in turning the latter by a small screw-driver, or any other suitable piece,
this being desirable for the purpose of turning back the eccentric c when the parts
are to be released.
These several parts described above are arranged in position, as seen in Figures 1
and 4, of the drawings, under which arrangement the cam portion of the cylinder is
mainly back in the groove or recess at the bottom of the fork and the spring sufficiently
coiled to give it the required tension. Obviously under this arrangement the spring
acts constantly to turn the eccentric cylinder around, thereby bringing the cam pro-
jection to bear directly upon the bearing block F', which in turn passes the part box B
up into contact with the wrist, thereby bringing the part box into proper bearing
position. But this spring being constant in action, it is obvious that at the least
release of the resistance to its action, the eccentric will be turned, so as to keep
it constantly up in bearing contact against the block F, and so the proper bearing
contact of the boxes will be constantly maintained, the usual wear being taken up
immediately and as fast as it occurs, so that there is no possibility whatever of
any losseness in the boxes and no danger whatever of the least"pounding."
proper
The slight vertical play of the block F in the fork provides for the
seating of the cam therein, and the forward movement of the block under the
action of the latter. At the same time it will be seen, by following the bearing
line from one end to the other of the head, that the bearing is a perfectly solid
one, one unyielding face coming against another similar face until the bottom of
.the fork is reached and no one part can yield in either direction, without the

page_text: application of force. This feature is a very important one which will be appreciated
by mechanics.
Modifications may be made in the application of my invention to different
devices and in different situations; hence I do not wish to be understood as limiting
my invention to the particular construction and arrangement of the devices herein
shown and described, provided, always a wedging surface is brought to bear upon one
of the boxes under the constant force of a spring and the parts are constructed and
arranged so that a solid bearing is obtained throughout.
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 :-
First. A connecting rod, provided with a fork or slotted head, in combination with
part box bearings arranged within said fork or slot, a wrist mounted in said bearings,
à circular cam or eccentric seated within the fork or slot of the head in the rear of
the box and free to turn in its seat, and a spring applied to said cam and arranged to
constantly turn the latter outward towards the box, substantially as and for the purposes
specified.
Second. The forked head u, in combination with the bearings boxes B B¹, the
wrist C, the bearing block F the circular cam or eccentric G, and the coiled spring H,
substantially as and for the purposes specified.
Third. The forked head a, provided at the bottom of the fork with a concave seat a³,
having a central groove a, in combination with the boxes B B', the eccentric G
mounted in said seat with its cam projection g in said groove and a coiled actuating
spring H applied to the eccentric, substantially as and for the purposes specified.
Fourth. The forked head a, in combination with the bearing boxes B B¹, the bearing
block Fa little less in width than the space between the fork arms, the eccentric G
and the coiled spring H, substantially as and for the purposes specified.
Fifth. The forked head a, in combination with the bearing boxes B B', the bearing
block F constructed as described, the eccentric G, the coiled spring H, arranged at
one end of the eccentric, and the cap I, substantially as and for the purposes
specified.
Dated this 2nd dow of Desember 1800'
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, Agents for the Applicant.