Roller Bearing and Spring Roll for the same.
Year: 1892

page_text: Date of Application, 6th Dec., 1892-Accepted, 4th Feb., 1893
COMPLETE SPECIFICATION.
Roller Bearing and Spring Roll for the same.
1, JOHN WESLEY HYATT, of the City of Newark, in the County of Essex,
State of New Jersey, United States of America, Gentleman, 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 and
accompanying drawings:
--
The object of this invention is chiefly to prevent the wear and disintegration
which result from the use of solid anti-friction rolls in roller bearings for journal
boxes.
My improved roll consists in a cylindrical spiral spring formed by winding a wire
rod into close coils, and my anti-friction journal bearing is formed by inserting one
or more series of such spring rolls within a cylindrical casing of suitable size, so
that the shaft when inserted in the bearing may rest upon the peripheries of the
spring rolls. The spring roll may be formed of round wire or rod when it is
intended to bear a light load, but to bear a heavy load it is preferably formed by
using a wire or rod of rectangular cross section wound into contiguous coils, with
the periphery ground or turned into cylindrical shape to make it fit accurately
against the casing and shaft.
The invention will be understood by reference to the annexed drawing, in
which
Fig. 1 is a side view of a shafting hanger with a section of the box between the
hanger guides;
Fig. 2 is an edge view of the hanger in section at the left hand end;
Fig. 3 is an end view of the journal box with the cover removed;
Fig. 4 is a plan of the lower half of the journal box;
Fig. 5 is an enlarged view of a spring roll shown in Fig. 4; and
Fig. 6 is an elevation of the cover for the journal box.
The hanger is shown with the usual foot A, legs B, and cross bars C and D
containing the set screws h for adjusting the journal box vertically.
Between the cross bars, the journal box is shown fitted as usual to vertical
guides e, the space between which, in the hangers ordinarily used, is only sufficient
to admit the shaft s and a box with brass or babbet metal lining.
To adapt a roller box to such a hanger, as a substitute for the babbet metal
bearings commonly used, I form the box with a contracted waist i having at its
opposite ends the cylindrical chambers j, the whole being divided horizontally into
top and bottom sections lettered k and k¹, which are provided with lugs 7 and
dowels m to hold the sections in line.
In Fig. 2, rolls n are shown titted in the roll chambers in three sets of seven each,
being held in place by the contact of their flat ends with the ends of the chamber,
and separated by annular plates n'. The outer end of the chamber is provided
with an interior groove y adapted to receive a disk like cover p. Such cover is
formed of thin sheet metal divided at one side by the notch pl, as shown in Fig. 6,
to facilitate the application of the cover and the journal box to shafting already
erected by springing it over the shaft.
The spiral spring rolls are flattened at the ends at right angles to their periphery,
which may be done by tapering the ends of the rod or wire, as shown in Figs. 2
and 4. The end of the spring may also be flattened by winding each coil chiefly
in a flat plane, with an offset or inclined bend c at the end of each coil, as indicated
in Fig. 5. With either construction the spring is adapted, by its flattened ends, to
roll with its ends against a flat surface like the cap e. The spring rolls may be
extended the whole length of the chamber as shown at n' in Fig. 4, one of the rolls

page_text: being shown on a larger scale in Fig. 5. With my construction any undue load
upon one roll will cause it to yield and thus distribute the load upon the other rolls.
With the solid rolls heretofore used, the ends of the rolls are liable to grind
the interior of the casing if the rolls become slightly displaced; but the use of the
spring rolls permits the ends of the rolls to yield if turned into contact with the
casing; while their elasticity tends to restore them to their normal position in
alignment with the shaft. The spring rolls may be used in any anti-friction
journal box, and are shown in the shafting hanger herein merely for purposes of
illustration:
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 :
1. An anti-friction roll, consisting in a spirally coiled spring adapted for use in
a journal bearing, substantially as set forth.
2. An anti-friction roll, consisting in a spirally coiled wire of rectangular cross
section with the periphery of cylindrical shape and the ends flattened at right
angles therewith, as set forth.
3. A roller journal box, consisting in a cylindrical casing having a series of
spiral springs inserted movably within its periphery to support an axle, substantially
as set forth.
4. An anti-friction journal box, consisting in a cylindrical casing having several
series of spiral springs inserted within its periphery with annular plates between
the ends of the springs in the several series to hold the springs of such series in
place, as set forth.
Dated this 5th day of December 1892.
E. K. DUTTON & Co.,
5, John Dalton Street, Manchester, Agents.