Year: 1887

page_text: Date of Application, 8th Nov., 1887
Specification Accepted, 9th Dec.. 1887
I, DELANO HURBET DUGAR, residing at Cedartown in the County of Polk, in the
State of Georgia, one of the United States of America, Gentleman, do hereby declare
the nature of this invention and in what manuer the same is to be performed to be
particularly described and ascertained in and by the following statement :-
This invention relates to pitmans or connecting rods and has for its object to devise
a construction for taking up wear without varying the distance between the centres
of the bearings.
The improvement consists in having a two part box fitted in the end or ends of the
pitman the sides of the box tapering and a cap provided with wedge shaped projections
which embrace and are adapted to bear against the inclined sides of the halves of the
box so that an inward movement of the cap brings the halves close together advancing
them towards each other equally thus preserving the centre of the bearing.
:-
The improvement further consists in the novel features of construction hereinafter
more fully set forth, claimed and shown in the annexed drawings, in which
Figure, 1, is a top plan view of a pitman or connecting rod embodying my
invention, and
Figure, 2, a side view showing the box and cap in section, and,
Figures, 3, and, 4, are isometric detail views.
The connecting rod or pitman a, may be of any desired pattern and has its end
provided with the recess, e, which receives the box composed of the halves, C, C, the
sides, o, taper forming wedge shaped spaces on each side of the box between it and
the end walls of the recess, e, for receiving the wedge shaped projections, b, of the
cap, B, bolted to the side of the connecting rod by the bolts, E, passed through the rod
on each side of the recess and screwed into the cap, the jamb nuts, F, lock the cap in
any adjusted position. The cap has flanges, b¹, at each end which fit in corresponding
rabbets, H, in the rod and guide the cap in its movements. The adjacent ends of the
halves of the boxes are normally separated so they may be brought together when
taking up wear, and the sides are Hanged and the flanges overlap the sides of the
connecting rod and the cap as shown.
In practice when it becomes necessary to take up wear the bolts, E, are screwed into

page_text: the cap thus drawing the cap closer to the sides of the rod and forcing the wedge
shaped projections b, between the halves of the box and the walls of the recess, this
operation advances the halves towards each other in opposite directions so that the
center of the bearing remains intact. When the cap is adjusted the jamb nuts are
turned up against it and fix its position.
Having now particularly described and ascertained the nature of the said invention
and in what manner the same is to be performed I declare that what I claim is —
1. The connecting rod having a recessed end, in combination with a two part box,
having tapering sides, fitted in the recess, and the cap provided with wedge shaped
projections which enter the recess and embrace the box, substantially as and for the
purpose specified.
2. The combination with the connecting rod having a recessed end and rabbet on
each side of the recess, of the box made in halves and having tapering sides, and the
cap provided with wedge shaped projections and having flanges which are adapted to
fit the rabbets, substantially as and for the purpose set forth.
3. The combination with the connecting rod having a recessed end, the box
composed of two halves and having tapering sides, and the cap provided with wedge
shaped projections of the bolts passed through the rod on each side of the recess and
screwed into the cap, and the jamb nuts mounted on the ends of the bolts,
substantially as set forth.
DELANO HURBET DUGAR.
By Jensen & Son,
77, Chancery Lane, London, W.C.,
Patent Agents.