IMPROVEMENTS IN ANTI-FRICTION JOURNAL BOXES
Year: 1879

page_text: LETTERS PATENT to Stephen P. M. Tasker, of the City and County of Phila-
delphia, and State of Pennsylvania, United States of America, for the
Invention of "IMPROVEMENTS IN ANTI-FRICTION JOURNAL BOXES.”
Sealed the 15th August 1879. and dated the 19th June 1879.
COMPLETE SPECIFICATION filed by the said Stephen P. M. Tasker at the
Office of the Commissioners of Patents on the 19th June 1879.
STEPHEN P. M. TASKER, of the City and County of Philadelphia, and State of
Pennsylvania, United States of America. “IMPROVEMENTS IN ANTI-FRICTION
JOURNAL BOXES."
Figure 1 is a transverse section on the line X, X, of Figure 2; and
Figure 2, a longitudinal section of my improvement embodied in a hanger for
shafting; and
Figure 3, a similar view of my improvement applied to a carriage axle.
Similar letters of reference indicate corresponding parts wherever used.
My Invention relates to the class of journals, boxes, bearings, and the like which
embody anti-friction rolls, and which are exemplified in such well known forms
as grind-stone bearings, and consists in a novel combination and arrangement of
series of anti-friction rolls, substantially in the manner hereinafter described and
claimed.
Referring to Figures 1 and 2 of the Drawing, which represent a hanger for a
pulley shaft or the like, A represents the shaft, and B represents the hanger.
C, D, are enclosing caps secured to the shaft on either side of the hanger, the
interior portions of which caps are excavated in such manner as to form the seats
and enclosing cases of the double series of small rolls E and F.
G are series of long rolls surrounding the shaft within the hanger and extending
from cap to cap in the manner shown.
The series is sufficient in number to embrace the shaft, the rolls bearing between
the hunger and the shaft, and being kept apart by the small rolls, as shown in
Figure 1.
The inner opening of the hanger is circular, and of diameter sufficient to embrace
both the shaft and the series of long rolls which surround said shaft.
The two series of small rolls E and F are each series of equal number with the
number of the long rolls, and are placed intermediately between the long rolls in
Price £11

page_text: such manner that there is no lost space between the shaft, the series of long rolls,
the series of short rolls, and the caps which embrace the latter.
From the above construction it will be obvious that the hanger being affixed to a
rigid supporting object, and the caps being affixed to the shaft and rotating with it,
the shaft in rotation bears upon the series of long rolls which play within the
hanger and between the hanger and the shaft, while the series of long rolls in turn
find their bearing upon the series of short rolls, which in turn rest upon and play
freely within the shaft caps.
In the rotation of the shaft the journalling is effected by the combined action of
all the rolls respectively bearing upon the parts described, it being borne in mind, as 1
stated, that there is no lost space or loose play among the various rolls.
In Figure 3, in which the Invention is shown applied to an axle, A represents
the axle; C, D, the inner and outer caps affixed thereto; B, the hub; G, the series
of long rolls; E and F, the two series of short rolls.
The inner portions of the caps are angled, as is also the inner face of the hub, the 1
angling being simply for convenience and to adapt the Invention to a conical form
of shaft.
The outer cap screws upon the axle to permit the tightening of the bearing as
the same wears loose.
In the form represented in Figure 3 the axle is of course stationary while the 2
hub rotates, which is exactly the roverse action from that of the device of Figures 1
and 2, but the action of the rolls in forming the journal bearing is identical.
Having thus described my Invention, I claim,—
1. The anti-friction journal box or bearing hereinbefore described, which consists
of the combination of a shaft A provided with caps C, D, rotating with it, with a 2
hanger B, by means of a series of long rolls G extending from cap to cap, and lying
between the hanger and the shaft, and by means of two equal series of small rolls,
each series similar in number to the long rolls, and lying between the caps and the
long rolls, all substantially in the manner shown and described.
2. The two equal series of small rolls E, F, enclosed within the shaft caps C, D, 3
in combination with the series of long rolls G, and serving to keep said long rolls
apart each from the other, substantially as shown and described.
In witness whereof, 1, the said Stephen P. M. Tasker, have hereunto set my
hand and seal, this Seventeenth day of May, A.D. 1879.
STEPHEN P. M. TASKER. (LS) 3