Improvements in Bearings for Shafting.
Year: 1891

page_text: Date of Application, 18th Aug., 1891-Accepted. 19th Sept., 1891
COMPLETE SPECIFICATION.
Improvements in Bearings for Shafting.
We, ENOCH SAWYER and HYRUM SAWYER, residing at Rumsey in the State
of Minnesota, United States of America, Gentlemen, 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 :—
This invention relates to boxes for shafting and which has for its object to
construct a device of this class in which the boxing proper may be readily removed
from the pillow block or seat for the purpose of relining the same with Babbit
metal when necessary.
The invention consists in the improved construction, arrangement and combination
of parts which will be hereinafter fully described and particularly pointed out in
the claims.
In the drawings hereto annexed :-
Fig. 1 is an end elevation of the box or bearing constructed in accordance with
our invention.
Fig. 2 is a plan view of the pillow-block or seat.
Fig. 3 is an end elevation showing the parts of the device separated from each
other.
Like numerals of reference indicate like parts in all the figures of the drawing.
1 designates the pillow-block or seat which is provided at opposite sides with
uprights 2, 2, connected by webs 3. The said uprights and webs together with
the pillow-block or base are shaped to form the semi-cylindrical recess 4. The
uprights 2 and the base 1, are provided with vertical slots 5 to receive the bolts 6,
the eyes 7 of which extend into the base for the reception of the arms 8 of a yoke
the cross-bar of which 9, connects the said arms at one end of the pillow-block, the
said cross-bar being slightly curved in a downward direction below the bottom of
the recess 4.
10 designates the box proper which is fitted in the recess 4 and is provided at its
upper inner edges with recesses 11, to receive the downwardly extending flanges 12
formed at the inner edges of the box cover 13. The latter is provided with
laterally-extending wings or flanges 14 having vertical perforations for the upper
ends of the bolts 6 which are provided with nuts 15 to hold the box cover in position.
An oil cup 16 of ordinary construction is mounted upon the upper side of the box
cover. The upper sides of the boxing 10 are provided with recesses 17 to receive
the points of set screws 18 which extend horizontally through the webs 3 and which
serve to retain the said boxing in position in the pillow-block. The latter is
provided with slots 19 to receive the bolts 20 by means of which it is mounted in
the position for operation. These set screws serve to retain the boxing 10 in position
as will be readily understood but the points of the set screws do not bear any
portion of the weight of the shaft or boxing 10 which rests entirely upon the pillow-
block.
The outer ends of the arms 8 of the yoke by means of which the bolts 6 are
retained in position are provided with slots 21 to receive split keys 22 by means
of which the said yoke is securely retained.
When
The operation of our improved shaft boxing will be readily understood.
it shall be desired to remove the boxing for the purpose of renewing the lining
therein, this may be accomplished by removing the nuts 15 when the box cover 13
may be lifted off. The upper ends of the bolts 6 may now be tilted slightly in an
outward direction and the set screw 18 loosened; the shaft is then slightly raised
say, one sixteenth of an inch and the box may be then readily slid out at either end
of the pillow-block. In cases where the latter is so arranged as to be inaccessible

page_text: from either end, the boxing 10 may be removed by turning it half way around
in its segmental seat in the pillow-block when it may be readily lifted out at
the top.
It will be seen by this invention the boxing is capable of being very easily and
quickly removed and in such a manner as to obviate the necessity of removing the
shaft as well as the danger of causing injury by springing the latter. The boxing
as described is accessible from either end as well as from the top of the seat
or pillow-block and the general construction of the device is very simple and
inexpensive.
Having now particularly described and ascertained the nature of our said
invention and in what manner the same is to be performed, we declare that we
claim is :-
1. The combination of the seat or pillow-block having a semi-cylindrical recess
with the shaft to be supported, the semi-cylindrical boxing fitted entirely within
and having complete bearing in said recess and capable of being rotated therein
around the axis of the shaft supported in said boxing without removing the shaft, a
cover secured to the seat or pillow-block and forming a bearing for the upper half
of the shaft and set-screws in the side walls of the pillow-block adapted to engage
the recesses in the sides of the boxing and lock the latter against rotation whereby
the weight of the boxing and shaft is distributed to the seat or pillow-block and is
not borne by the set screws, substantially as and for the purpose set forth.
2. The combination of the pillow-block having a segmental recess and provided
with vertical slots extending through the uprights forming part of the side walls
of said recess, the boxing mounted in the latter and provided with recesses at its
upper edges, the box cover having downwardly extending flanges to fit in said
recesses and provided with outwardly extending wings having vertical perforations
and the connecting bolts mounted pivotally in the base of the pillow-block and
extending upwardly in the latter and through the wings of the box top, substantially
as set forth.
3. The combination of the base or pillow-block having a semi-cylindrical recess
and provided with vertical slots extending through uprights forming part of the
side walls of said recess, the yoke, the arms of which are extended transversely
through said slots and through the eyes of bolts seated therein, the split-keys
mounted in slots at the outer ends of the arms of said yoke, the boxing seated
in the recess of the pillow-block and the box cover having slots for the passage
of the upper ends of the connecting bolts substantially as and for the purpose
set forth.
Dated this 18th day of August 1891.
W. P. THOMPSON & BOULT,
Agents for the Applicants.