Improvements in and relating to Swivel Bearings for Shafting.
Year: 1891

page_text: Date of Application, 24th Sept., 1891
Complete Specification Left, 14th June, 1892-Accepted, 17th Sept., 1892
PROVISIONAL SPECIFICATION.
Improvements in and relating to Swivel Bearings for Shafting.
We, ALEXANDER GUILD, Engineer, and BARRY, HENRY AND COMPANY
LIMITED, both of the Aberdeen Iron Foundry and Engineering Works in the
City and County of Aberdeen, do hereby declare the nature of our invention to be
as follows:-
This invention has reference to and comprises a new or improved mode of and
means or method of adjusting that form of adjustable bearing for shafting in which
the centre part of the bearing is made in the form of a portion of sphere or ball,
which ball can swivel to a certain extent in cups formed in the ends of pins
or short stud spindles which carry or support the bearing, and are adjustable
vertically.
The usual way of adjusting the pins or spindles has been by means of screw
threads cut or cast on them and working into corresponding threads cut or cast
in hangers or bracket or frame fixings, said pins or spindles requiring to be moved
round by means of a lever before they could be raised or lowered, whereby the
shafts are often twisted and difficult to adjust.
By our improvements one or both of the pins or stud spindles below and above
the bushes are formed with screw rack teeth on one side and moved or adjusted by
a worm or screw spindle. The one end of the pins or spindles work in close
recessed eyes or hollow chambers or bosses carried in their supporting hangers or
brackets and when made with close ends have spiral or other adjusting springs
mounted behind them within the bosses, and adjusting pinching screws at their
ends and sides and having flat parallel recesses on one side of stud spindles working
in corresponding flat recesses in the eyes to prevent these stud spindles from
turning. While the other or adjacent ends of the pins or spindles carry the swivel
adjustable journal bearings in which the shafting is carried. One or both of these
hollow eyes or bosses is or are formed with a recessed space on one side for the
worm to work in and gear with the rack teeth of the pin or stud spindle, and the
worm spindle is fitted with a turning or adjusting hand wheel outside.
In carrying these improvements into practice under one arrangement, the worm
when cast is made from a machine cut pattern in two parts with spindle attached
and pins fitted to keep said two parts truly in line. The corresponding thread or
rack of pin spindles is formed on the pattern cut by a machine. The threads of
worm when machined are made in the usual way with a steel spindle formed on or
fitted to same, and when cut in the pins or stud spindles are machined by a
wheel cutting or other machine.
The core box which forms the cores for the eyes of the hangers or brackets is
made as metal core box and is all in one piece truly fitted, bored out and recess
planed on sides to form a recess in the eyes of hangers to prevent pins or stud
spindles from turning. The same core box also forming the core for reception of
worm and spindle. These various parts being all made in one_core box ensures
them being truly in line, central and square with one another. The worm adjust-
ment would be made for both pins, for heavy bearings, but only for one pin or
spindle, preferably the lower for lighter work, and when made in the latter style,
the top of eye would not be cored through, but a close end would be left for an
ordinary set screw to be fitted, and this can also be applied to the under pin spindle
at lower part of bracket.
Spiral or other springs would or may be fitted between the close end of eyes and
pins whereby they assist in self adjusting the shaft to a true level, or these springs
may be fitted in the top part only when the worm adjustment is in the lower

page_text: portion and whereby the top pin is pressed down by the spring while the shaft is
being adjusted and the pinching screw afterwards screwed down. When both ends
are made close this is done by means of one core box the said core resting on a core
print between the two eyes of brackets.
Dated the 23rd Sentember 1891.
W. R. M. THOMSON & Co.,
96, Buchanan Street, Glasgow, Agents.
COMPLETE SPECIFICATION.
Improvements in and relating to Swivel Bearings for Shafting.
We, ALEXANDER GUILD, Engineer, and BARRY, HENRY, AND COMPANY,
LIMITED, both of Aberdeen Iron Foundry and Engineering Works, in the City
and County of Aberdeen, do hereby declare the nature of our invention, and in
what manner the same is to be performed, to be particularly described and ascer-
tained in and by the following statement in writing reference being had to the
accompanying drawings
:-
This invention has reference to and comprises a new or improved mode of, and
means or method of adjusting that form of adjustable bearing for shafting in
which the centre part of the bearing is made in the form of a portion of a sphere
or ball, that can swivel to a certain extent in cups formed in the ends of pins
or short stud spindles which carry or support the bearing, and are adjustable
vertically.
The usual way of adjusting the pins or spindles has been by means of screw
threads cut or cast on them and working into corresponding threads cut or cast in
hangers or bracket or frame fixings, said pins or spindles requiring to be moved
round by means of a lever before they could be raised or lowered, whereby the
shafts are often twisted and difficult to adjust.
And in order that our said invention and the manner of performing or carrying
the same into effect or practice may be properly understood, we have hereunto
appended an explanatory sheet of drawings, in which the same reference letters are
used to indicate corresponding parts in all the figures where shown.
Figures 1 and 2 are a side elevation partly in section and a front elevation.
respectively of a swivel bearing for shafting as constructed in accordance with one
arrangement of our improvements.
Figure 3 is a plan view corresponding to Figure 1; and Figure 4 is a horizontal
section as taken on the line 1-1 in Figure 1, of the bottom boss with the bush
removed.
Figures 5 and 6 are views corresponding to Figures 1 and 2 of a modified con-
struction of our improved swivel bearings; while Figure 7 is a plan view
corresponding to Figure 5; and Figure 8 a horizontal section as taken on the
line 2-2 in Figure 5.
Referring to Figures 1 to 4 of the drawings, By our improvements either one
or both of the pins or stud spindles A, A', below and above the bushes B B¹ made
in two parts as usual, are formed with screw rack teeth a on one side and moved
or adjusted by a worm or screw spindle a' the lower one A only being shown in
this arrangement as so fitted. The one end of the pins or spindles A A', work in
close recessed eyes or hollow chambers or bosses C, C', carried in their supporting
hangers or brackets C2 and when made with close ends C as shown in the upper
one C¹ have spiral or other adjusting springs & mounted behind them within the
bosses, and adjusting pinching screws cc, at their ends and sides, and having flat
parallel recessed projections at A", on one side of the stud spindles A, A', working
in corresponding flat recesses C¹¹ in the eyes C C¹, to prevent these stud
spindles A, A', from turning. While the other or adjacent ends A³ of the pins or
spindles A, A, are formed with spheroidal ends to carry the usual swivel adjust-
able journal bearings B, B, in which the shafting is carried. One or both of these

page_text: hollow eyes or bosses C, C¹, is or are formed with a recessed space C on one side
for the worm a and its screw spindle a" to work in and gear with the rack teeth a
of the pin or stud spindle A, and the worm spindle is fitted with a turning or
adjusting hand wheel a' outside.
The worm a when cast, is made from a machine cut pattern in two parts with
spindle attached and pins fitted to keep said two parts truly in line. The corre-
sponding thread or rack a of the pin spindles is formed on the pattern cut by a
machine. The threads of worm a¹ when machined are made in the usual way with
a steel spindle formed on or fitted to same, and when cut in, the teeth a of the pins
or stud spindles A A' are machined by a wheel cutting or other machine.
The core box which forms the cores for the eyes or hollow parts of the
bosses CC, of the hangers or brackets C' is made of metal and is all in one
length truly fitted, bored out and recess planed on sides to form a recess C" in the
eyes of the hangers to prevent the pins or stud spindles A A' from turning. The
same core box also makes the core which forms the recess C³ for the reception of
the worm a', and spindle a". The eyes or hollow parts of the bosses C C¹, for the
ends of the spindles A A', and C for the worm a', are all made by one core which
is formed in a metal core box, to ensure of their being truly in line, central and
square with one another. The worm adjustment would be made for both pins A, A¹,
for heavy bearings, but only for one pin or spindle, preferably the lower one as
shown for lighter work, and when made in the latter style, the top of eye C¹ would
not be cored through, but a close end C would be left for an ordinary set screw cl
to be fitted, and this can also be applied to the under pin spindle at lower part of
bracket as shown in Figures 5 and 6.
Spiral or other springs c would or may be fitted between the close end C¹ of
the eyes C C', and the pins A A' whereby they assist in self adjusting the shaft to a
true level, or these springs may be fitted in the top part only as shown in Figure 1,
when the worm adjustment a, a', a", is in the lower portion, and whereby the top
pin A is pressed down by the spring c while the shaft is being adjusted and the
pinching screw afterwards screwed down. When both ends are made close as
shown in Figures 5 and 6, this is done by means of one core box and core the
said core resting on a recess formed by the core print between the two eyes C C¹
of the brackets.
с
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed, we declare that what we
claim is:-
First. The mode and means of forming and fitting the carrying stud spindles and
their eyes in the brackets of swivel shaft bearings for adjusting and securing the
bearings and their studs, substantially as and in the manner herein described in
reference to and shown in the accompanying drawings.
Second. The forming of the supporting stud spindles of swivel bearings for
shafting with projecting parallel flat bearings or feathers working in corresponding
recesses in their eyes, for preventing these from turuing, substantially as and
in the manner herein described in reference to and shown in the accompanying
drawings.
Third. The fitting of the supporting stud spindles of swivel bearings for shafting
with screw racks and worm spindles for adjusting and supporting the stud spindles
in their carrying brackets, substantially as and in the manner herein described in
reference to and shown in the accompanying drawings.
Fourth. The fitting of the supporting stud spindles and their carrying bosses of
swivel bearings for shafting with close ends and spiral or helical springs, and end
and lateral securing screw pins, substantially as herein described in reference to
and shown in the accompanying drawings.
Fifth. The forming of the eyes in both bosses of the brackets carrying the stud
spindles of swivel bearings for shafting with one core in a single metal core box,

page_text: substantially as and in the manner herein described in reference to and shown in
the accompanying drawings.
Dated the 12th Tune 1909
W. R. M. THOMSON & Co.,
96, Buchanan Street, Glasgow, Agents.