Improvements in and connected with Adjustable Bearings for Dandy-rolls.
Year: 1893

page_text: Date of Application, 8th July, 1893
Complete Specification Left, 9th Apr., 1894-Accepted, 12th May, 1894
PROVISIONAL SPECIFICATION.
Improvements in and connected with Adjustable Bearings for
Dandy-rolls.
We, MATTHEW FOSTER, of 4 Woodside Terrace, Joppa, Midlothian, Dandy
Roll Maker, and WILLIAM MORRISON, of Jane Street, Leith, Midlothian,
Engineer, do hereby declare the nature of this invention to be as follows:-
This invention has reference to dandy rolls as used in paper making machinery
and it has for its object to adjustably support or hold the rolls in position in the
machine.
Our invention consists in fitting on or to the machine adjustable spring bearings
which support or hold the ends of the dandy roll in position.
In carrying out our invention we fit brackets, having forks or slots at their upper
ends, on or in connection with the machine, and, in the forks or slots, the spring
bearings are placed or fitted. Each bearing consists of a hollow externally screwed
body which has jamb nuts or equivalent devices fitted on it. Passed through the
interior of the body is a spindle which is normally held up or supported, within the
body, by means of spiral springs, or rubber cushions or springs, or their equivalent.
Fitted to the lower or it may be the upper end of the spindle is a stirrup or
other shaped piece, which has fitted on or to it any suitable form of wheel, roller, or
bush bearing.
The ends of the dandy roll lie in or are supported by the bearings one of which
is fitted at each side of the machine.
The arrangement is such that the whole weight of the dandy roll is supported by
the spring bearings and that the pressure on the pulp can be regulated by merely
lowering or raising the bearings, by means of the jamb nuts, and, or, altering the
tension of the springs or cushions.
When any
hard substance passes through the machine the rolls can rise up
sufficiently in their spring bearings, to allow the substance to pass without doing
damage.
The bearings at opposite sides of the machine are capable of being shifted nearer
together or further apart by simply slackening the jamb nuts and then pushing them
(the bearings) along the slots or forks of the supporting brackets. By this arrange-
ment rolls of different lengths can be interchanged so as to suit the different classes
of paper being manufactured.
If desired the brackets may be dispensed with and the bearings be fixed in
position or be held or supported by cross beams or rods passed over the machine.
If desired two or more springs or cushions can be fitted in or to each bearing.
The dandy rolls may be supported on or be held or suspended on or in the
bearings.
If so desired the forks or slots of the brackets may be made long enough to extend
right across the machine.
A cap or cover is, preferably, provided for enclosing the spring or springs.
The spindle may be graduated if so desired.
The jamb nuts may have outwardly projecting studs for convenience in turning
them.
This invention much larger rolls can be used than heretofore.
Dated thin 7th day of Iul. 1009

page_text: UMI DIN
Improvements in and connected with Adjustable Bearings for
Dandy-rolls.
We, MATTHEW FOSTER, of 4 Woodside Terrace, Joppa, Midlothian, Dandy
Roll Maker, and WILLIAM MORRISON of Jane Street, Leith, Midlothian,
Engineer, 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 has reference to dandy rolls as used in paper making machinery
and it has for its object to adjustably support or hold the rolls in position in the
machine.
Our invention consists in fitting on or to the machine adjustable spring bearings
which support or hold the ends of the dandy roll in position.
And in order that our said invention may be properly understood we have
hereunto appended an explanatory sheet of drawings whereon,
Fig. 1 is a part vertical section and Fig. 2 a side elevation of the device.
Figs. 3. and 4 are respectively side and front views of a hook bearing.
Referring to the drawings whereon the same reference letters wherever repeated
indicate the same parts.
In carrying out our invention we fit at each side of the machine a bracket a having
a fork b, or it may be a slot, at its upper end, and in the forks, or slots, of these
brackets the spring bearings are placed or fitted.
Each bearing consists of a body or casing c, which is screwed externally
at c² and has jamb nuts d d', or equivalent devices fitted on it. Passed through
the interior of the body c is a hollow spindle e which is normally held up or
supported, within the body, by means of a spiral spring f. This spring bears
against a collar g on spindle e, at its upper end, and, at its lower end, on an inner
ledge or flange g¹ on the bottom of the casing.
Screwed into a plug h at the lower end of the spindle e is a bent piece of
metal i, provided with friction wheels or rollers j, j'. This piece with its friction
wheels forms a bush bearing for the end k of the dandy roll to rest on.
The upper end of the casing is provided with a screw cap l.
The arrangement is such that the weight of the dandy roll is supported by the
spring bearings and that the pressure on the pulp can be regulated by merely
lowering or raising the bearings, by means of the jamb nuts, and altering the tension
of the spring cushions.
When any hard substance passes through the machine the rolls can rise
up sufficiently in their spring bearings to allow the substance to pass without
doing damage.
The bearings at opposite sides of the machine are capable of being shifted nearer
together or further apart by simply slackening the jamb nuts and then pushing them
(the bearings) along the slots or forks of the supporting brackets. By this arrange-
ment rolls of different lengths can be interchanged so as to suit the different classes
of paper being manufactured.
Figs. 3 and 4 show the part of each bearing as made in the form of a
hook in which the ends k of the rolls are placed. In this case the pulleys j, j¹ may
be dispensed with.
The spindle e may as shown be screwed at its upper end and have a nut m fitted
on it for the purpose of raising said spindle. By turning the nut the spindle
and bearing can easily be raised when desired and the roll lifted up off the pulp.
If desired the brackets may be dispensed with and the bearings be fixed
in position or be beld or supported by cross beams or rods passed over the
machine.

page_text: In lieu of the spring fa rubber cushion may be used, if desired two or more springs
or cushions may be fitted in or to each bearing.
The bush bearing i may be fitted on top of the spindle e. In this case the screw /¹ is
withdrawn from the plug h and the screw p is inserted in the plug p¹ at the upper
end of the spindle.
If so desired the forked or slotted part of the brackets may be elongated so as to
extend across the machine and form a bridge over it. The bridge, in which both
bearings would be fitted, would preferably be supported at both sides.
If so desired the spindle may be graduated as shown at n Fig. 2. The jamb nuts.
may have outwardly projecting studs o for convenience in turning them.
Under this invention much larger rolls may be used than heretofore.
We do not confine ourselves to the exact form of spring bearing shown as it may
be modified or altered without departing from the invention.
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
consider novel and desire to claim is.
1. For dandy rolls, the application and use of spring bearings substantially as and
for the purpose set forth:
2. The combination with the body or casing c, of the spindle e, and a spring (ƒ)
or a cushion, substantially as hereinbefore described with reference to the drawings
annexed.
3. The general arrangement or combination of parts of the adjustable bearing
for dandy rolls, substantially as hereinbefore described and shown on the drawings
annexed.
H. D. FITZPATRICK,
70, Wellington Street, Glasgow, Agent.
H. D. FITZPATRICK,
70, Wellington Street, Glasgow, Agent.