IMPROVEMENTS IN JOURNAL-BOXES
Year: 1887

page_text: Date of Application, 12th Apr., 1887.
Specification Accepted, 17th May, 1887.
1, HERBERT JOHN ALLISON, of 52 Chancery Lane, London, in the county of
Middlesex, Patent Agent, do solemnly and sincerely declare that I am in possession
of an invention for IMPROVEMENTS IN JOURNAL-BOXES, and I do hereby declare the
nature of my invention for Improvements in Journal-boxes, and in what manner
the same is to be performed, to be particularly described and ascertained in and by
the following statement :—
Figure 1 is an end elevation of my journal-box with the cam-rings drawn back
to give all the supporting springs full play.
Fig
Tigure 2 is a vertical section of Fig. 1.
Figure 3 is an end elevation of my journal-box with the two side cam-rings turned
into position preparatory to bringing said box to bear upon its rigid bearings: and
Figure 4 is a like elevation showing said box resting on its rigid bearings.
This invention relates to improvements in boxes for the journals of shafts which
revolve at a high rate of speed, but especially for the shafts of grinding and polishing
machines, whose abrading wheels are liable to wear "out-of-truth," and thereby
produce a tremulous or jumping motion of the shaft; to remedy this trouble I have
devised a novel arrangement of springs for supporting the journal-boxes in the
brackets, and have combined therewith an arrangement of cam-rings, whereby
the spring-supports for said boxes can be quickly thrown out of use, and the boxes
will then be borne on rigid, non-yielding, supports.

page_text: As represented in the drawing A is the bracket or pedestal for my journal-box,
having two side chambered-bosses a, arranged in an inclined position at each side of
the box, and a single vertical chambered-boss a' directly under the journal of the
shaft B; the inner end of each side-boss a and the lower end of the vertical-boss a¹
are indented to form a series of alternating level and inclined planes, or landings,
marked respectively 1, 2 and 3 on the drawing; the indentations in the boss a¹ being
formed deeper than the others for a purpose hereinafter explained.
C cam-rings fitted into the chambers of the bosses a and provided with indentations
which correspond to those in the end of said bosses and form a series of alternating
level and inclined planes that are marked respectively 4, 5 and 6; the arrangement of
said planes, in respect to those in the bosses a, being such that, when the cam-rings
are turned in one direction, they will be forced toward the shaft B, but when turned
in an opposite direction they will-by the interlocking of their indentations with those
on the bosses a, as shown in Fig. 1-be free to move outwardly from said shaft.
C¹ a cam-ring, or cap, fitted into the lower end of the vertical-boss a¹, and provided
with a series of level and inclined planes, which correspond to those in the lower end
of said vertical-boss, and which are marked respectively 7, 8 and 9; said cam-ring is
preferably provided with a handle c, which is integral therewith, for the purpose of
turning the cam-ring when occasion requires.
D springs, which are fitted in each of the chambered-bosses, those in the bosses a
have one end bearing upon a rocking-block d and the opposite end bearing against
the journal-box; the spring in the boss a¹ has one end bearing against the upper end
of the chamber, and the opposite end bearing against the cap C.
E the journal-box, which is made to separate on a line with the centre-line of the
shaft B; the lower part of said box is extended downward to form a hub whose
opposite sides are inclined to conform to the inner end of the side bosses a ; an annular
groove, e¹, is formed in each of the inclined sides of said hub, to receive the end of
the springs D that are fixed in the chambers of the bosses a; a central screw-bolt F,
that is preferably cast in, is pendent from the lower part of the box E, and said bolt
after passing through the boss a¹ and cap C¹, is provided with a nut f, by which the
cap Ccan be forced on to compress the spring D that is in the chamber of the boss a²,
to a sufficient degree to serve the purpose while the journal-box is used as a spring-
bearing; a check-nut, f¹, bears against the nut to prevent the latter from working
off during any tremulous movement of the box.
When this journal-box is in use as a spring-bearing the cam-rings C are turned as
shown in Figs. 1 and 2, so that the indentations and projections on said rings and
those on the bosses a will interlock, and thereby produce a clear space between said
rings and hub e that will permit the box E to play sidewise against the resistance of
the springs in the bosses a; at the same time the cam-ring C₁ is turned into the
position shown in Figs. 1, 2 and 3, where sufficient clearance will be left between the
indentations and projections of said cam-ring and lower end of the boss a¹ to permit
the box E to play vertically against the resistance of the spring in the boss a. To
adjust the box E to operate as a rigid bearing, the side cam-rings C are first turned,
as shown in Fig. 3, where the ends of the projections 1 and 4 will bear against each
other, to partially close, up the spaces between the cam-rings C and the sides of the
hub e, then, by turning the cam-ring ("to bring the ends of the projections 1 and 7
to bear against each other, as shown in Fig. 4, the box E will be drawn down to bring
the sides of the hub e in contact with the rings C and the bearing will then be
perfectly rigid and unyielding.
Having now particularly described and ascertained the nature of my said invention,
and in what manner the same is to be performed, 1 declare that what I claim is-
1. In a journal-box, the combination, with a pedestal provided with chambered-
bosses, a and a¹, containing springs D which are arranged at the sides and bottom of
the box E, and the cam-rings C and C provided with indentations and inclined planes
that co-act with corresponding indentations and planes on the open ends of the cham-

page_text: bered-bosses, of the box E provided with the hub e, having inclined sides, and a
central bolt F, which passes through the cam-ring C₁, as and for the purpose
specified.
a,
2. In a journal-box, the combination, with the pedestal A having an inclined cham-
bered-boss at each side of the box E, and a vertical boss a¹ directly under said box,
the open end of all of said bosses having a series of alternating indentations and
planes, as herein set forth; the springs D contained in said bosses, and the cam-
rings C and C provided with alternating indentations and planes which correspond to
those in the end of the bosses, of the journal-box E, having its opposite sides inclined
to conform to the angle of the bosses a, and having a central bolt F which passes
through the cam-ring, or cap, C'; the said cam ring being adapted to bring the box E
to a rigid bearing as herein specified.
ALLISON BROS.,
Agents for the Applicant.