Improvements in Journal Boxes.
Year: 1892

page_text: Date of Application, 14th Apr., 1892
Complete Specification Left. 13th Jan., 1893-Accepted, 18th Feb., 1893
PROVISIONAL SPECIFICATION.
Improvements in Journal Boxes.
We, ISAAC BRAITHWAITE and EDWARD O'BRIEN, of the firm of Isaac
Braithwaite & Son, Kendal, in the County of Westmoreland, Merchants and
Engineers, (a communication from abroad by The Dodge Manufacturing Co.,
Mishawaka, Indiana, United States, America,) do hereby declare the nature of this
invention to be as follows:-
This invention relates particularly to that class of journal boxes which are
self adjusting to the line of the shaft. These boxes are frequently made with
transverse rings which on portions of their outer surface constitutes concave
segments of the same sphere, fitted to corresponding concave surfaces of the pillow
block, so as to form therewith a ball and socket joint for the journal box,
wherein it may have an universal movement to adjust its axis to the axis of
the shaft.
Boxes of this kind require some device to prevent them from revolving with the
shaft and causing their plane of separation to depart from the corresponding plane
of the pillow block, which would prevent the removal of the upper half of the box.
Such a device is a stud, always heretofore made a part of the lower half of the
box, projecting downward therefrom between lugs or other portions of the base of
the pillow block, so as to prevent rotation of the box without restraining its
freedom of self adjustment.
This arrangement has an important and highly inconvenient defect, and the
object of the present improvements is to remedy said defects without impairing
the efficiency of the device itself The defect referred to, is in the impossibility of
removing the lower half of the box without first removing the shaft which rests
in it, so that said box may be lifted straight upwards from its seat in the pillow
block.
When it is considered that this removal is of frequent necessity for the purpose
of renewing the babbit lining, that the necessity is liable to occur at any time by
reason of the entrance of grit, or other causes which can not be foreseen or guarded
against, and that the shaft with which pillow block boxes are used are commonly
heavy. The inconvenience and expense of removing the shaft from all its bearing
boxes, in order to get the lower half of one of said boxes out, will be apparent to
any one having practical acquaintance with motive machinery, and correspondingly
the advantage of a structure which will permit the removal of the shaft, will be
equally apparent.
This invention consists in a restraining stud projecting upward from the upper
half of the box and suitable restraining Jugs or surfaces on the inner surface of the
pillow cap, whereby while said upper part of the box and said cap are in place,
both parts of the box will be restrained from revolution with the shaft, from a
position beneath to a position above the shaft. To accomplish this, it is necessary
to provide some temporary support for the weight of the shaft while the lower box
is absent.
In carrying out the invention the pillow block is constructed in the usual way
with a cap secured by screw bolts and the bearing box in two parts divided
transversely. The journal box is also provided with spherical segments to form a
ball and socket joint.
A projecting stud is affixed to the upper part of the box which fits loosely
between lugs or plates projecting downward from the inner surface of the cap or
into a hole formed therein.
When the cap has been removed, the upper part of the box will then be free to

page_text: be lifted off, uncovering the shaft and removing all impediments to a revolution
of the lower part of the box from beneath round the shaft to a position above it,
when it may also be lifted from the shaft and may be replaced again beneath the
shaft by movements in reverse order.
Dated this 12th day of April 1892.
WM. P. THOMPSON & Co.,
6, Bank Street, Manchester, Patent Agents..
COMPLETE SPECIFICATION.
Improvements in Journal Boxes.
We, ISAAC BRAITHWAITE and EDWARD O'BRIEN, of the firm of Isaac
Braithwaite & Son, Kendal, in the County of Westmoreland, Merchants and
Engineers, (a communication from abroad by The Dodge Manufacturing Co.,
Mishawaka, Indiana, United States, America,) 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 particularly to that class of journal boxes which are:
self adjusting to the line of the shaft. These boxes are frequently made with
transverse rings which on portions of their outer surface constitute convex segments.
of the same sphere, fitted to corresponding concave surfaces of the pillow block, so
as to form therewith a ball and socket joint for the journal box, wherein it may
have an universal movement to adjust its axis to the axis of the shaft.
Boxes of this kind require some device to prevent them revolving with the shaft
and causing their plane of separation to depart from the corresponding plane of
the pillow block, which would prevent the removal of the upper half of the box.
Such a device is a stud, always heretofore made a part of the lower half of the box,
projecting downward therefrom between lugs or other portions of the base of the
pillow block, so as to prevent rotation of the box without restraining its freedom of
self adjustment.
This arrangement has an important and highly inconvenient defect and the object
of the present improvements is to remedy said defect without impairing the
efficiency of the device itself. The defect referred to, lies in the impossibility of
removing the lower half of the box without first removing the shaft which rests
upon it, so that said box may be lifted straight upwards from its seat in the
pillow block.
When it is considered that this removal is of frequent necessity for the purpose
of renewing the babbit lining, that the necessity is liable to occur at any time by
reason of the entrance of grit, or other causes which can not be foreseen or guarded
against, and that the shaft with which pillow block boxes are used are commonly
heavy, the inconvenience and expense of removing the shaft from all its bearing
boxes, in order to get the lower half of one of said boxes out, will be apparent to
any one having practical acquaintance with motive machinery, and correspondingly
the advantage of a structure which will permit the removal of the shaft, will be
equally apparent.
This invention consists in a restraining stud, projecting upwards from the cap or
upper half of the box and suitable restraining lugs or surfaces on the inner surface
of the pillow cap, whereby while said upper part of the box and said cap are in
place both parts of the box will be restrained from revolution with the shaft from
a position beneath to a position above the shaft. To accomplish this, it is necessary
to provide some temporary support for the weight of the shaft while the lower box
is absent.
The manner in which the invention is carried into operation will be fully
described with reference to the accompanying drawings in which as an example ís
shown a journal box carried by a pillow or plummer block.
Fig. 1, is a perspective view of a pillow block provided with our improvement.

page_text: Fig. 2, is a central transverse section of the same.
Fig. 3, is a central longitudinal section.
Fig. 4, is a central transverse section showing the manner of removing the
lower box.
Fig. 5, plan of cap B of pillow block viewed from the under side.
A is a pillow block, and B is a cap for the same, secured in place by screw bolts
as usual. C and D are respectively the lower and upper parts of the bearing box,
their plane of separation being parallel with the axis of the shaft and substantially
coincident with the plane of separation between the pillow block and its cap.
EE are the spherical segments which constitute with corresponding concavities
of the pillow block and cap, a ball and socket joint for said box. F is a stud
projecting from upper part D of the box and resting loosely between lugs or
plates GG projecting downward from the inner surface of the cap B or in a hole
or slot formed therein. When the cap B has been removed, the upper part D of
the box will then be free to be lifted off, uncovering the shaft and removing all
impediments to a revolution of the part C of the box from beneath, to a position
above the shaft as shown in Fig. 4, when it may also be lifted from the shaft, and
may be replaced again beneath the shaft by movements in reverse order.
Having now particularly described and ascertained the nature of the said inven-
tion, and in what manner the same is to be performed, we declare that what we
claim is :-
1. Self adjusting journal box provided with a removable cap, having on its inner
surface lugs or plates G substantially for the purpose set forth, combined with a
self adjusting journal box in two parts C D as described, the part D being provided
with a restraining lug or pin F adapted to rest between said restraining lugs,
plates or surfaces and thereby restrain the said box from revolution with the shaft
for the purpose set forth.
2. The pillow block A. and its cap B provided with the plates G G pendant from
the inner surface of said cap, combined with a self adjusting journal box C D.
provided with a stud F projecting upward from the upper part D of said box
between said pendant plates.
Dated this 12th day of January 1893
WM. P. THOMPSON & Co.,
Manchester, Liverpool, and London, Patent Agents..