Improvements in the Mounting of Metal Shells of Immersion or Squeezing Rollers used in Sow Boxes of Sizing and other Machines.
Year: 1894

page_text: Date of Application, 5th Dec., 1894-Accepted, 19th Jan., 1895
COMPLETE SPECIFICATION.
Improvements in the Mounting of Metal Shells of Immersion or
Squeezing Rollers used in Sow Boxes of Sizing and other
Machines.
JAMES GREGSON of the Firm of Gregson & Monk, Vulcan Iron Works
Preston in the County of Lancaster, Machinist and Loom Maker, 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 :-
The object of this invention is to improve the mounting of metal shells of
immersion or squeezing rollers used in sow boxes of sizing and other machines.
In existing rollers, the metal shells are mounted on outer blocks ends, driven
into the copper tube, or brazed in the same and are held in position by a collar
welded on the shaft at one end, and by a nut screwed upon the shaft at the other
end, this makes a most rigid connection it being impossible for the roller ends to
move on the shaft in the slightest degree, and the copper shell being bound in this
manner has no freedom of elongation, and as there is considerable difference between
the expansion and contraction of the copper tube and the iron or steel shaft, the
centre of the copper shell is very often bent in, so that when the 2 rollers are
working together, there is a considerable space left in the centre, and this is very
detrimental to the good working of the rollers, besides this on account of the
unequalness of expansion and contraction between the copper shell and the
shaft, the ends are always coming loose into the outward shell, and by this
means it allows the size to flow between the end and the shell into the body of
the tube.
To obviate this I construct a metal shell having the two outer ends constructed
of brass or other metal, with a long boss or sleeve, the same is turned, fit and
brazed into the copper shell, the boss or sleeve being long enough to come outside
the sow box altogether, through the gland or stuffing box, and by this means it
prevents any size whatever from getting into the copper roller. The ends, and the
boss or sleeve are bored to work upon the iron or steel shaft, and the boss or sleeve
are also turned to work in the gland or stuffing boxes, and are connected by clutch
boxes fixed outside the sow box, one clutch box on the end of the boss or sleeve of
the copper roller end, and one upon the shaft, with a small space left between each
coupling, which allows both the copper roller and the shaft to expand and contract
as required seperately, and by this means there is no strain through the said
expansion and contraction either on to the body of the tube or in the ends which are
fit into the same so that the roller remains true and rigid having the free expansion
named.
In order that my invention may be thoroughly understood I refer to the accom-
panying drawing which represents my improvement.
Fig. 1. shows the existing arrangement of copper rollers. A is the copper shell.
B are the ends which are driven into the copper tube.
G is the iron or steel shaft
H is the collar welded on one end of the shaft G, and I is the nut screwed upon
the shaft at the other end which holds the ends in position in the roller.
Fig. 2. shows my improvement. A is the shell of the roller. Bare the ends
with long sleeve or boss. C is the gland or stuffing box that the sleeve or bush
works through, fixed in the frame side. D is one style of clutch box. E shows
another style of clutch box arrangement on the opposite end of the shaft. Fare

page_text: the bevel driving wheels which drives the shaft that goes through the roller and as
named the roller is driven by the clutch boxes fixed upon the same. G is the
iron or steel shaft for driving the roller. The clutch boxes D and E are made
with sufficient space to allow the necessary expansion and contraction required in
the copper roller.
It will be readily seen that the expansion or contraction of the shell A Fig. 2.
will cause the long boss or sleeve of the ends B to slide backwards and forwards
on the shaft G as required and that the clutch boxes D and E are arranged to
allow sufficient regulation for the necessary expansion and contraction. I do
not confine myself to making the ends B with long bush or sleeve to go through
the gland or stuffing box as the same may be made shorter and the clutch boxes D
and E placed inside the sow box, but I consider it preferable to have them outside
as by having them outside it prevents any possibility of the size flowing between
the sleeve and the shaft G into the inside of the roller. I do not confine myself
to the exact style or make of the clutch boxes D and E as described and used for
the driving and regulation of the expansion and contraction seperately of both the
shaft and copper roller as deviations may be made from these without interfering
with the principle of my invention. For instance in place of clutch box the
same results might be accomplished by a flat key being fixed into the shaft,
and a slot in the bush or sleeve to work upon the key, this will give the result of
driving and regulation for expansion and contraction can be obtained.
The advantages of my improvements are that expansion and contraction can take
place both in the shaft and copper roller without any strain, and therefore is
kept true and will last much longer and do its work much better, also that the ends
are not liable to come loose, and no size can possibly get inside the roller.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed I declare that what I
claim is :-
The construction of a metal roller with ends B being loose upon the shaft which
will move backwards and forward as required in the expansion and contraction of
the copper shell and shaft independently, substantially as described.
Dated this 4th day of December 1894.
JAMES GREGSON.