Improved Machine for Making Parchmentized Fibre and the like.
Year: 1891

page_text: Date of Application, 8th Sept., 1891-Accepted, 21st Nov., 1891
COMPLETE SPECIFICATION.
Improved Machine for Making Parchmentized Fibre and the like.
I, CHARLES WESLEY ROBINSON, of 721 West 9th Street in the City of
Wilmington and State of Delaware, one of the United States of America,
Superintendent of the Kartavert MFG. Company do hereby declare the nature
of the said 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 my invention is to construct a machine for winding chemically
treated sheets of fibrous material in the manufacture of what is known as
parchmentized fibre," in such manner as to overcome certain objections to the
machines now employed, and this object I obtain in the following manner, reference
being had to the accompanying drawings in which-
Figure 1, is a longitudinal sectional view of my improved machine;
Figure 2, is a plan view;
Figures 3 and 4, are views showing the winding elements of the machine in
different positions ;
Figure 5, is a transverse section on the line 1-2, Figure 1; and
Figures 6, 7 and 8, are views showing different forms of bars on which the fibre
can be wound.
Heretofore chemically treated sheets of fibrous material, have in the manufacture
of parchmentized fibre been wound upon a cylinder or drum until the prescribed
thickness has been reached, after which the sheet is severed and the cylindrical
web thus formed upon the drum, is cut from end to end and spread out flat.
I have found, however, that when the web is thick the outer surface of said
cylindrical web is so much greater in diameter than the inner surface of the same,
that when the web is flattened out the shorter side is strained, while the long side
buckles, and in the further treatment of the web this buckling becomes very
apparent, and the object of my invention is to substantially overcome this buckling
and stretching of the material.
In Figures 1, and 2, A, represents the roll. of fibrous material, usually paper,
which is drawn from the roll in the form of a sheet a, the latter passing over a
series of rolls b, 61, into the bath B, around a frame C, therein against and around
guides c, above the bath, and thence to and round the delivery roller D, which is
hung from the frame E, by arms d, this roll serving to guide the paper onto the
former bar G, which is adapted to bearings in the side frame of the machine-and is
driven in any suitable manner, a belt wheel or gearing being applied to one of its
trunnions g.
The former bar G, is, in the present instance, very nearly flat, being preferably
slightly larger at the centre than at the ends, which are rounded. At each edge of
the former is a rim h, which serves to properly guide the sheet a.
As the former G, is turned on its axis the sheet of fibre is wound round it, the
roller D, rising and falling so as to follow the shape of the former, hence the sheet
of fibre is pressed upon the former bar by the roller, and the admission of air
between the layers of fibre is prevented.
After the required thickness of web is attained the sheet a, is cut and a roller I,
hung to an arm I', pivoted to the arm d, is allowed to drop by removing a prop i,
which normally supports said arm I¹. The roller I, therefore assumes the position
shown in Fig. 3, and rests upon the sheet a, so as to hold the end of the sheet
against the roller D, and keep it under tension at the end of the wind so as to
prevent the last layer from being loose.
The roller D, is then raised clear off the former bar G, and propped up by the
arme, as shown in Figure 4, so that free access can be had to the web wound

page_text: upon said former bar. The web is then cut at each end, as shown in Figure 4, and
a truck W, is run under the former and the under piece of web allowed to drop
onto said truck, as shown in said figure, after which the truck is removed and
another truck inserted, or if the truck is of sufficient length it can be so moved as
to receive the top layer of fibre which is drawn off from the former in the direction
of the arrow. Figure 4.
It will be understood that different shapes of former bars may be used, for
instance, as shown in Figures 1 and 6, the surface-of the former is slightly tapered
while in Figure 7 I have shown a former with flat faces and bevelled ends,.and-in-
Figure 8 I have shown a flat former with rounded ends.
By the above described machine- I am enabled to wind the web of fibre to almost
any thickness and yet avoid any material stretching or buckling of the web..
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:-
•
1. In a machine for winding a web of chemically treated fibre, the combination
of the guide rolls, a tank for the treating liquor, guides therein for the web of fibre
a flat former and a roller adapted to press the fibre upon the former as the latter is
revolved, substantially as described.
2. The within described former upon which to wind the web in the process of
manufacturing parchmentised fibre, said former being flat, substantially as and for
the purpose described.
3. The combination of the frame, the flat former mounted therein, mechanism for
rotating said former, and a pivoted bearing roller adapted to rest upon the fibre as
it is wound upon the former, and free to rise and fall with the former as it is
revolved, substantially as described.
4. The combination of the former, the bearing roller, a pivoted arm carrying
said roller, a retaining roller and an arm carrying such. roller,. said. retaining
roller bearing the relation to the bearing roller, substantially as described.
5. The combination of the flat former, edge flanges thereon, mechanism for
revolving said former, and a bearing. roll adapted to rest on the former,. substan-
tially as set forth.
Dated this 4th day of September-1-201
DAY, DAVIES & HUNT,
321,. High Holborn, London, W.C., Agents for the Applicant..