Improvements in Journal Boxes.
Year: 1889

page_text: Date of Application, 15th Oct., 1889-Accepted, 23rd Nov., 1889
CUMI DEIE DI ECIFICATION.
Improvements in Journal Boxes.
I, JOSEPH T. MURRAY of Newark, in the County of Essex, State of New Jersey
United States of America, Manufacturer, do hereby declare the nature of this inven-
tion and in what manner the same is to be performed, to be particularly described
and ascertained in and by the following statement :-
This invention relates to journal bearings and has for its object, to provide for the
perfect distribution of the lubricating material upon the entire wearing surface, with
but little waste or use of the lubricant.
This invention therefore consists in the provision of a journal bearing, with grooves
and pockets so arranged, that the lubricant can be applied either in a solid or semi-
solid, or a liquid condition, and either way it may be thoroughly applied with but
little if any waste, to the entire bearing surface of the journal.
My invention further consists, in the provision of a journal bearing, having a series
of grooves, so arranged, that the heating and cutting of the journal and bearing, will
be reduced to a minimum, if not entirely avoided.
My invention still further consists in the provision of a journal bearing, having
certain peculiar and novel features which will be more fully described hereinafter and
specifically pointed out in the claims.
Referring to the accompanying drawings in which Fig. 1 is a longitudinal sectional
view, of a journal bearing of my improved form, Fig. 2 a transverse sectional view
of the same. Fig. 3 a longitudinal sectional view of a modification of the same,
Fig. 4 is a transverse section and Fig. 5 a perspective view of the bearing.
A represents the body of the journal bearing, having a number of ridges or
projections a, a, which as shown in the drawings, are saw toothed shaped, so as to
form a series of wedge shaped pieces, b, b, having their sides converging at one end,
and diverging at the other end, the larger end of one piece, being adjacent to the
smaller end of the next piece.
These ridges or projections a, a, form between their outer edges a series of similar
shaped depressions or continuous grooves designated c, c.
In the center of each of the wedge shaped pieces b, b, are formed triangular
pockets d, d.
It will be noted, that the raised portion consists of a series of saw tooth lines,
which run at an angle with the line of motion of the shaft and that as the shaft is
rotated, a portion of its surface will bear upon one or the other of these lines at
all times, but that the hearing will not be in a line with the motion of the shaft.
The grooves and pockets in which the lubricant is stored overlap each other in
such a manner that it is impossible to rotate the journal without its entire surface
coming into contact with the lubricant during a single rotation.
The walls of the grooves or channels are made to converge in the direction of
rotation of the shaft and hence there is no tendency of the lubricant to be forced out
of its seat, but on the contrary it will be forced by the pressure and impact of the
shaft more firmly into place thus preventing waste and keeping the shaft constantly
and permanently lubricated.
The grooves c c are filled with a solid or semi-solid lubricant and the pockets d d are
either filled in the same way or with a liquid lubricant, or else allowed to become
filled with the lubricant drawn from the grooves, during the rotation of the journal.
Where the grooves are filled with a solid lubricant the same may be forced therein
under pressure, so as to form a practically solid lubricating bearing, for the shaft.
In the modification shown in Fig. 3 of the drawings, the raised lines designated
are of the general saw-shaped form as that shown in Fig. 1 but instead of having
angular pockets in each of the wedge shaped pieces, the lines form continuous
e e

page_text: grooves f, f, between them; this form of bearing I prefer where it is to be applied to
a reciprocating shaft, as for instance, piston rods, although either of the forms may be
used on reciprocating or rotary shafts.
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 :-
1st. A journal bearing, provided with a series of grooves or depressions, whose
outer edges diverge and converge throughout their entire length, and form continuous
circumferential channels, consisting of a series of wedge shaped communicating
chambers, adapted to hold a solid or semi-solid lubricant, the sides or walls of
said chambers, converging in the direction of rotation of the shaft, substantially as
described.
2nd. A journal bearing, provided with a series of wedge shaped grooves, and a
series of angular pockets, said grooves and pockets overlapping each other at their
ends, the grooves forming continuous circumferential channels consisting of a series
of wedge shaped communicating chambers, adapted to hold solid or semi-solid
lubricant, the sides or walls of the chambers, converging in the direction of rotation
of the shaft, substantially as described.
Dated this 20th day of September 1889.
JOSEPH T. MURRAY.
By Henry Skerrett,
Agent for Applicant.