Improvements in Paper Makers' Expanding Spindles for Oarrying Paper Reels or Rolls and the like.
Year: 1896

page_text: Date of Application, 23rd Apr., 1896
Complete Specification Left, 25th Jan., 1897-Accepted, 17th Apr., 1897
PROVISIONAL SPECIFICATION
Improvements in Paper Makers' Expanding Spindles for Oarrying
Paper Reels or Rolls and the like.
I, ROBERT BRODIE, 6 George Place, Edinburgh, in the County of Mid-
Lothian, N.B., 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 relates to improvements in paper makers' expanding spindles for
carrying paper reels or rolls and the like.
In the carrying out of my invention, the paper or other material is wound upon
a reel which may be in the form of a metal or other tube.
A spindle fits through the said tube and in accordance with my invention this
spindle is hollow or tubular and is divided longitudinally into say three segments.
When in position within the outer tube, the said segmental spindle is capable of
being expanded tight within the tube by means of a pneumatic india-rubber tube
placed inside the expanding spindle. Thus by pumping air or water into the
pneumatic tube, the spindle is expauded so as to fit tight within the tube, but when
it is required to withdraw the spindle, the air is allowed to escape the expanding
tube thereby being allowed to contract and to be drawn out from the tube carrying
the roll or reel of paper or other material. A stiffening rod or tube is preferably
passed through the pneumatic tube, flanged caps being fitted on the end of this
rod by means of which the segments of the expanding spindle are held together.
The air may be conveniently supplied to the pneumatic tube by means of a hole
through one end of the rod, an air valve being provided there, which valve may be
opened by simply passing a pin into the end of the rod and pressing open the valve
which is kept closed by the pressure of the air. The expanding spindle need not
necessarily be fitted within a tube upon which the paper or other material is
wound, for example two or more rings or hoops may be employed at suitable
spacings lengthways of the roll, for my segmental spindle to expand into.
The essential featuro of my invention is the pueumatic arrangement for causing
the spindle to be readily tightened or slackened when within the reel or roll of
paper, but the particular construction of my segmental spindle may be varied. For
instance, instead of the segmentally split or divided spindle being of one continuous
length from side to side of the reel of paper, there may be expanding segmental
portions at the ends only of the reel, and each may be provided with its own
pneumatic tubo portion.
JOHNSONS,
115 St. Vincent Street, Glasgow, Petitioner's Agents,

page_text: CUNTLMIE DIMUIFICATION.
Improvements in Paper Makers' Expanding Spindles for Carrying
Paper Reels or Rolls and the like.
I, ROBERT BRODIE, of 6 George Place, Edinburgh, in the County of Mid-
Lothian N.B. 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 relates to improvements in paper makers' expanding spindles for
carrying paper reels or rolls and the like.
In the carrying out of my invention, the paper or other material is wound upon
a reel which may be in the form of a metal or other tube.
A spindle fits through the said tube and in accordance with my invention this
spindle is hollow or tubular and is divided longitudinally into say three segments.
When in position within the outer tube, the said segmental spindle is capable of
being expanded tight within the tube by means of a pneumatic india-rubber tube
placed inside the expanding spindle. Thus by pumping air or water into the
pneumatic tube, the spindle is expanded so as to fit tight within the tube, but when
it is required to withdraw the spindle, the air is allowed to escape, the expanding
tube thereby being allowed to contract and to be drawn out from the tube carrying
the roll or reel of paper or other material. A stiffening rod or tube is preferably
passed through the pneumatic tube, flanged caps being fitted on the end of this rod
by means of which the segments of the expanding spindle are held together.
But in order that my said invention may be more readily understood and easily
carried into effect 1 will proceed to describe the same with reference to the
accompanying drawings in which
Figure 1 is a longitudinal section illustrating one method of carrying out my
invention.
Figuro II is an elevation.
Figure III a longitudinal section aud
Figure IV a cross section of a modification and
Figure V is a longitudinal section of a further modification.
Referring to Fig. 1 of the drawings, I employ a tube A into the ends of which
journals a are secured; the object in employing a tube being to reduce the weight
for handling. Upon the outside of the tube A and secured firmly at both ends is
placed a pueumatic india-rubber tube B capable of being inflated by the passage b,
to the end of which an air valve (not shown) is secured.
Situated outside the pneumatic tube is the spindle for carrying the reel or roll.
This spindle is hollow or tubular and is divided longitudinally into three segments C,
the ends of which are bevelled as shewn and held in position by the corresponding
bevelled edge of the flanged end caps D in such a manner that when air or water
is pumped into the india rubber tube the segments of the spindle are expanded or
bulged outwards towards their centre so as to fit tightly within the tube to be
carried; the said bevelled edges allowing for the contraction of the segments while
at the same time keeping them in position.
The tube A is made as large as possible to reduce the air space for the pneumatic
pressure between the tube and the expanding sections.
When used as a reel on which the material may be wound direct the expanding
sectious may be held in position by auy suitable clip arrangement.
Or as shewn in Figures 2, 3 & 4 I may secure to each of the expanding segments
or sections C, on one edge, a number of slip pieces E provided with slots e, which
slip pieces slide under the edge of the adjoining section and are kept together by
rivets working in slots e as shewn moro particularly in Fig. 4; holes or openings

page_text: being provided for engaging the rivets with the slots. Caps D are also employed
with this form to hold the enda of the scations in position.
It will thus be seen that the rivets and slots allow the segments to be expanded
by the pneumatic tube until the rivets engage with the ends of the slots when they
are beld rigidly in position thus securing a spindle of uniform diameter. The
internal slip pieces E also protect the rubber tube from being damaged.
Or as shewn in Fig. 5 I may employ a rod F formed with a circular recess for
holding the ends c of the sections C in position; a sliding collar f being provided
for holding the ends c' in position. Tho segments C may also be further held by
external boops F1 at suitable intervals the segments being reduced in diameter at
these parts to enable the check rings to lie flush with them when not expanded; the
said recesses formed by reducing the diameter being of such a depth as to allow
the segments to be freely expanded.
The expanding spindle need not necessarily be fitted within a tube upon which
the paper or other material is wound,-for example two or more rings or hoops
may be employed at suitable spacings lengthways of the roll, for my segmental
spindle to expand into..
The essential feature of my invention is the pneumatic arrangement for causing
the spindle to be readily tightened or slackened when within the reel or roll of
paper, but the particular construction of my segmental spindle may be varied. For
instance, instead of the segmentally split or divided spindle being of oue continuous
length from side to side of the reel of paper there may be expanding segmental
portions at the ends only of the reel, and each may be provided with its own
pneumatio tube portion.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed I declare that what I
claim is :
1. The pneumatic (or other fluid pressure) expanding spindle for carrying reels
or rolls of paper and the like, substantially as described and shewn in the
accompanying drawings.
2. The india-rubber tube, (or its equivalent) situated within the expanding
spindle, by tho inflating or collapsing of which the sections of the spindle are
expanded or contracted as described and shewn in the accompanying drawings.
Dated this 22nd dex of Ton 1907
JOHNSONS,
115 St. Vincent Street, Glasgow, Applicant's Agents.