Improvements in Paper-holding Rollers for Type-writing Machines.
Year: 1890

page_text: Date of Application, 16th Dec., 1890-Accepted, 31st Jan., 1891
[Communicated from abroad by GEORGE CANFIELD BLICKENSDERFER, of
Stamford, Connecticut, United States of America.]
Improvements in Paper-holding Rollers for Type-writing Machines.
I, HENRY HARRIS LAKE, of the firm of Haseltine, Lake & Co. Patent Agents,
45 Southampton Buildings, in the County of Middlesex, 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 :-
My invention has relation to hollow cylindrical rollers or platens for paper-
holding carriages for type-writing machines, wherein the roller consists of an inner
and outer shell and the inner shell is provided with end journals, and it has for its
object to so improve the form of roller that it can be independently made and of a
lighter or minimum weight and avoids undue wear of the type.
The invention accordingly consists of the combinations, constructions and arrange-
ment of parts as hereinafter described in the Specification reference being had to
the accompanying drawings in which
Figure 1 is a longitudinal section of a roller embodying my improvements,
showing one form of same;
Figure 2 is a like view of a mould illustrating the manner of forming the hollow
hard rubber cylinder and securing thereto in the mould, the end or shaft journals of
metal;
Figures 3, 4, and 5 are sectional elevations showing different constructions of
rollers.
A represents the roller composed essentially of an inner hollow hard-rubber
cylinder or tube B having shaft or end journals bb and an outer layer or covering
of softer vulcanized rubber C. The cylinder or tube B is made hollow to give the
requisite strength to the roller and also with the use of the hard rubber to have it
of a very light weight so that its inertia when to be moved longitudinally, is very
readily overcome by a light pressure or force. The cylinder B may be blown in a
mould or drawn in tube form from dies and it has ends with openings 62 for its shaft
journals. Provision for said ends and journals may be made in various ways,
and in the drawings I have illustrated a number of constructions and arrangements
of the same, the use of which depend upon whether the tube or cylinder B is
blown or drawn.
In Figure 1, which I deem one of the preferable forms of rollers or platens,
the cylinder B has its ends blown integrally therewith and in each end
opening is secured a separate shaft journal b, which journals are unconnected,
or in other words, the roller has no shaft running from end to end of the same,
which further reduces the weight of the roller or platen.
The manner of producing this described form of cylinder B with ends b¹, and
end-journals is substantially as follows:-
of
A two part or other mould D as illustrated in Figure 2, is made and the
separate shaft-journals are inserted therein as indicated, the inner ends
said journals are roughened indented, perforated, annularly grooved or otherwise
correspondingly treated to allow the rubber of which the cylinder B is made and as
it is blown, to enter the recesses formed as described in said ends to obtain a
tight grasp or hold thereon and thereby prevent lengthwise movement of the
journals independent of the cylinder, and to cause both the cylinder and journals to
rotate together. The mould being duly prepared with the journals and the
[Price 8?

page_text: supply of rubber and water or other liquid inserted therein, it is treated or heated
in the usual manner to blow therein, as indicated by dotted lines in Figure 2 the
cylinder B with integral ends and its firmly connected journals . If desired the
cylinder ends b¹ may be provided with inside hubs to give increased bearing for
the journal ends and by so doing the cylinder as shown may be made thin as
shown in Figures 1 and 2. The cylinder B when removed from the mould D
requires little if any finishing and it is subjected to treatment in the usual or other
way to vulcanize thereon the outer covering or layer of softer rubber C. In lieu
of which however, said covering C may be a separately formed tube and slipped
over the cylinder B and cemented or otherwise connected thereto in any desired way.
If desired the sectional or separate shaft journals & may be connected by a thin
or small bar or rod of a smaller diameter as indicated by dotted lines Figure 1, or
a shaft extending from end to end of the roller may be substituted as indicated in
Figure 3, in which case those portions or parts of the shaft passing through the
end openings in the cylinder B will be roughened or otherwise treated as herein-
before described, to admit of firmly connecting the shaft to the cylinder.
Instead of using separate or metal shaft-journals as above set forth, hard rubber
journals may be substituted, in which case, they are blown integral with the
cylinder ends 'as illustrated in Figure 4, and these hard rubber journals when
subject to undue wear or otherwise as desired, may be covered with metal or other
suitable sleeves E as shown in Figure 5.
The ends 6' may be solid or they may be of skeleton or spoke form with outer
rim and hub.
When the cylinder B is drawn through dies in the shape of a tube, it is cut off
in suitable lengths and its ends b' are separately made and suitably secured thereto
either by cementing, vulcanizing, pinning, screwing, or otherwise as desired in
which case, said ends may be of hard-rubber, (wood, metal, or other material)
having shaft journals provided in any one of the ways as hereinbefore described.
It will be seen from the foregoing that the ends of the cylinder B and the axle-
journals 6 therefor may be provided for in various ways, and I do not confine my
invention to the same as shown and described, as it comprises broadly the roller or
platen having an inner hollow composition cylinder or tube and an outer vulcanized
softer rubber covering or layer.
So too, instead of using, hard-rubber for the cylinder B papier-machie pulp,
celluloid, red-fibre, or other analogous material may be employed.
Again while in describing my invention I have used the term roller or platen I
do not mean to confine myself to the same having a circular form as it may have
any desired form in cross-section as required for the machine to which it is to be
applied.
Having now particularly described and ascertained the nature of this invention
and in what manner the same is to be performed as communicated to me by my
foreign correspondent, 1 declare that what I claim is :-
First. A paper-holding roller or platen for type-writing machines, comprising an
inner hard composition cylinder or body having a covering or layer of softer
material.
Second. A roller for type-writing machines, consisting of a hollow shell of hard
rubber, the ends and cylinder of which are formed or blown in one piece, journals
on said ends and a soft rubber outer shell, substantially as set forth.
Third. A roller for type-writing machines which consists of an inner hard rubber
shell having ends provided with journals of the same material and an outer coating
of soft rubber, substantially as set forth.
Fourth. A roller for type-writing machines which consists of an inner hard
rubber shell having its ends and journals formed integral therewith, and a soft
rubber outer shell, substantially as described.
Fifth. A roller for type-writing machines which consists of an inner shell of hard

page_text: rubber with ends and journals of the same material and said journals having metal
sleeves thereon, substantially as described.
Dated this 16th day of December 1890.
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, W.C., Agents for the Applicant.