Improved Adjustable Expansion-spool for Paper Rolls.
Year: 1892

page_text: Date of Application, 30th Nov., 1892
Complete Specification Left, 2nd Oct., 1893-Accepted, 18th Nov., 1893
PROVISIONAL SPECIFICATION.
Improved Adjustable Expansion-spool for Paper Rolls.
1, ALEXANDER YOUNG of 38 West Register Street, Edinburgh, in the
County of Midlothian, North Britain, Manager, (a communication to me from
abroad by Charles William Taylor Manager, and Albert Mallish Wickens
Engineer, both of Toronto " Globe," Toronto, Ontario, Canada,) do hereby
declare the nature of this invention to be as follows:-
This invention relates to that class of spools, cores, or shafts used for rolls of
paper such as are employed in printing newspapers and the like, and where it
is intended to remove and replace the spool after the paper is wound thereupon.
My object is to produce a spool capable of being expanded and contracted,
which shall be simple and cheap in construction, by reason of fewness of parts
and fittings, and at the same time efficient, positive and easy in operation.
My improved core, shaft or spool consists of a central shaft screwed at one
end with a movable screwed collar or nut working thereon, a sectional shell
having projections engaging with and adapted to be expanded and contracted
by the movement of said collar or nut, and toggles or links connecting the shell
sections to the central shaft.
The shaft has a screw thread at one end and two enlargements or collars,
shrunk upon same or made in one therewith, the said collars being situated a
short distance from the ends of the shaft, and each of these collars is cut away
so as to form lugs between each pair of which are inserted the ends of a short
link or toggle, the same being pivoted therein by pins there being three toggles
thus connected to each collar, and these toggles are pivoted by pins to curved
castings one of which is screwed to the inside of each of the three segments or
sections of a circular shell, at points opposite each collar, thus forming an
expansive exterior for a spool.
At or near one end of each of the shell segments we arrange a flange, which
fits into an annular groove, in a screwed collar or nut, which works upon the
screw thread on the shaft, this nut or collar being also provided with holes, or
equivalent means, whereby it may be screwed up. Upon the opposite end of
the shaft is firmly mounted a collar, preferably curved on its outer face, and of
such diameter as will correspond with the diameter of the shell when it is
retracted. In this position the ends of the shell-segments and the rim of the
collar are flush, so as to present a smooth end for easy insertion into the roll
of the paper.
By unscrewing the nut the shell-segments are drawn in an end wise direction,
and the toggles working upon a radius from their pivot-pins, follow the motion,
and thus retract the segments and thus reduce the diameter of the external shell,
when the spool can be quickly withdrawn from the paper roll or expanded again
to the desired extent.
Dated this 29th November 1892.
J. Y. JOHNSON,
115, St. Vincent Street, Glasgow, Petitioner's Agent.

page_text: COMPLETE SPECIFICATION.
Improved Adjustable Expansion-spool for Paper Rolls.
I, ALEXANDER YOUNG of 38, West Register Street, Edinburgh, in the
County of Midlothian, North Britain, Manager, (a communication to me from
abroad by Charles William Taylor, Manager, and Albert Mallish Wickens,
Engineer, both of Toronto "Globe Ontario, Canada,) 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 that class of spools, cores, or shafts used for rolls of
paper such as are employed in printing newspapers and the like, and where it is
intended to remove and replace the spool after the paper is wound thereupon.
My object is to produce a spool capable of being expanded and contracted,
which shall be simple and cheap in construction by reason of fewness of parts
and fittings, and at the same time efficient, positive and easy in operation.
My improved core, shaft or spool consists of a central shaft screwed at one
end with a moveable screwed collar or nut working thereon, a sectional shell
having projections engaging with and adapted to be expanded and contracted by
the movement of said collar or nut, and toggles or links connecting the shell
sections to the central shaft.
But in order that my said invention may be more readily understood and
easily carried into effect, I will proceed to describe the same with reference to
the accompanying sheets of drawings.
Figure 1 is a part longitudinal section and Figure 2 is a cross section on
line X X of Figure 1 of my said invention in which the outer shell is expanded to
its largest diameter.
Figure 3 is a part longitudinal section. Figure 4 a cross section on line Y Y
Figure 5 a cross section on line Z Z, of Figure 3 and Figure 6, a detail of a
modification of my invention in which the outer shell is in the mid position.
A is the shaft, having a screw-thread a, at one end and two enlargements or
collars a' a', shrunk upon same or made in one therewith, said collars being situated
a short distance from the ends of the shaft, as shown, and each of these collars is
cut away so as to form lugs a² a², between each pair of which are inserted the
ends of a short link or toggle B, the same being pivotted therein by pins b, there
being three toggles thus connected to each collar, and these toggles are pivoted by
pins 6' to curved castings C, one of which is screwed to the inside of each of the
three segments or sections of a circular shell, D, at points opposite each collar, thus
forming an expansive exterior for the spools.
At or near one end of each of the shell-segments I arrange a flange, d, which fits
into an annular groove e, in a screwed collar or nut E which works upon the screw-
thread a on the shaft A, this nut or collar being also provided with holes, el or
equivalent means, whereby it may be screwed up. Upon the opposite end of the
shaft is firmly mounted a collar F, preferably curved at its outer face, and of such
diameter as will correspond with the diameter of the shell D when it is retracted.
In this position the ends of the shell-segments and the rim of the collar are flush,
so as to present a smooth end for easy insertion into the roll of paper.
The operation of my invention will be readily understood from the fore-
going and from the drawings, but I may say that when the parts are in the position
shown in Figure 1, by unscrewing the nut E the shell-segments are drawn in an
endwise direction, and the toggles B B, working upon a radius from their pivot
pins b, follow the motion, as will be easily comprehended, and thus retract the
segments, and thus reduce the diameter of the external shell so that the spool can
be quickly withdrawn from the paper roll or expanded again to the desired
extent.

page_text: Referring to Figures 3 to 6 inclusive which show a modification of my invention,
I dispense with the toggles and their connections and substitute therefor one, two or
more inclined plane or wedge arrangements for each section of the outer shell.
The end inclines G are composed of a web g, secured to the section D, the lower
edge of the said inclines being formed T shaped (in section Figure 4) and inclined
longitudinally (Figure 3). The T shaped edge of this web works in a corresponding
inclined groove or recess formed in a collar g' which is keyed to the shaft A, in
such a manner that on the screwed nut or collar E being revolved the webs y of the
various sections D are drawn up or pushed down the inclined grooves or recesses in
the collars gl; the said out E in this case is provided with a rim or flange e2 which
works in corresponding grooved brackets e³ one or more of which are attached at
each end of each section as shown in Figures 3 and 6; Fig. 6 being an end view of
the bracket. When there are one or more inclined planes between the two end
inclines, I may dispense with the T shaped flange on the lower edge of the web g
of these inclines as shown in Figure 5, the T shaped webs at either end of the spool
being sufficient to withdraw or collapse the sections D when required.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed, I declare what I
claim is :-
(1.) In an expansible core, the combination of a central shaft screw-threaded near
one end, a nut or collar working thereon and having an annular groove, a shell made
up of sections, each having a projection fitting into said groove so as to be moved
by said collar, and pivoted links, inclined planes or toggles for connecting the shell
sections to the central shaft, substantially as and for the purposes hereinbefore
described.
(2.) In an adjustable expansion-spool for paper rolls, the combination, with the
shaft A, having collars a, of the sectional shell D, having flanges d and castings C,
toggles B, pivoted to said collars and castings, and nut E, screwed upon the shaft
and having the annular groove e substantially as and for the purposes hereinbefore
described.
Dated this 29th of Sentember 1892
J. Y. JOHNSON,
115, St. Vincent Street, Glasgow, Applicant's Agent.