IMPROVEMENTS IN THE MANUFACTURE OF PAPER BARRELS OR PACKAGES, AND IN APPARATUS THEREFOR
Year: 1876

page_text: LETTERS PATENT to William H. Murphy, of the City of Syracuse, in the State
of New York, United States of America, for the Invention of " IMPROVEMENTS
IN THE MANUFACTURE OF PAPER BARRELS OR PACKAGES, AND IN APPARATUS
THEREFOR,"
COMPLETE SPECIFICATION filed by the said William H. Murphy at the
Office of the Commissioners of Patents on the 14th September 1876.
WILLIAM H. MURPHY, of the City of Syracuse, in the State of New York, United
States of America. "IMPROVEMENTS IN THE MANUFACTURE OF PAPER BARRELS
OR PACKAGES, AND IN APPARATUS THEREFOR."
My Invention comprises both the method and the apparatus used by me in
making paper barrels or packages having a bilge; and reference is had to the
accompanying Drawing, in which,
-
Figure 1 represents a plan or top view of my apparatus; and Figure 2, an end
view thereof.
Figure 3 is a perspective view of a barrel made according to my method; and
Figure 4 is a sectional view of the same.
My method consists in making paper barrels or packages having a bilge in two
or more segments by the use of my apparatus by taking the paper or strawboard of
the desired thickness and size, either directly from the "wet machine" (so called) in
the paper mill, or a dampened sheet of the same material, and subjecting it to
pressure between two heated hollow dies, and drying it while under the pressure
simultaneously, so that when dry and removed from the dies it is fixed in the shape
of a segment of the desired package, and is ready to go into the package or
barrel,
The details of my method are herein-after more specifically set forth in con-
nection with the description of my apparatus and the mode of operation thereof,
which apparatus is constructed and operated as follows:-I first make a hollow
male die A, the lower outer surface of which conforms to the shape of the inner
surface of a segment of the package I desire to manufacture. At each end of the
periphery of the lower outer surface of this die I make the surface plane or straight,
as shown in Fig. 1 at the points m for a short distance from the end in order
that the heads and the top and bottom hoops of the package may fit better.
DC1

page_text: Between these straight portions I make the lower outer surface of this die bilging
or deeper in the centre. I then make a female hollow die B to fit the male die, or
rather as much larger at all points of the die proper as the thickness of the material
to be used for the packages. I make these dies hollow, so that I can heat them by
introducing steam, for which purpose I provide an inlet pipe a and an exit pipe b
in the male die A, and an inlet pipe c and an exit pipe d in the female die B. The
flow of the steam into and its exit from the die is controlled by a stop-cock, or in
any other ordinary manner.
Upon the upper surface of the male die A I place two knives n, n, one on each
side, which are worked by means of the lever arrangement o, as shown in the
Drawing, and so constructed and arranged as to give a "shear cut." Upon each
end of the male die A. I place a knife r, either fastened rigidly thereto, and of the
shape shown in the Drawing, or I can and rather prefer to place the knives thereon
loosely, and work them by a lever arrangement. The dies A and B are to be placed
in a hydraulic or other press for operation.
Having thus described the construction of my apparatus I will proceed to describe
the mode of its operation.
Having separated the dies A and B a suitable distance from each other, they
having been heated to the proper drying heat, but not enough to burn or char, I
place a sheet of wet paper (or dampened) or strawboard 8 of suitable size to make
one segment of the desired variety of package upon the female die B, and then by
depressing the male die A, or elevating the female die B according to whichever
one is fixed solid in the press, I press the sheet of paper to the desired form or shape
between the two dies, and at the same time the paper being between two heated
surfaces is quickly dried and fixed permanently in the desired shape. When nearly
dry I trim off the edges with the knives upon the male die, which leaves the edges
of the segments square and straight. As shown in the Drawing the knives r will
trim off the ends of the segment when the pressure is applied to the paper; or if I
use loose knives on the ends I can trim the ends off after drying the same as I do
the edges. Then opening the dies I remove the pressed sheet, insert another wet
sheet, and repeat the operation. In this way I make the segments of the packages
all of the same size, shape, and form, and ready to put together without any further
cutting of any kind, varying the size of the dies with the size of the packages
made.
To make a complete package I take two of the segments or more and fasten their
edges together by the joint X, which joint is constructed as follows:-I take a
piece of wood of the desired length and width and thickness, and make it of such
shape that on either side there will be a projection or lip an inch or so in width, and
between them upon the upper
surface a central raised portion raised above the plane
of the lips just about the thickness of the material to be used in the package. I
then take a strip of zinc or other metal of about the same width as the piece of
wood, and fasten it through the middle to the raised part of the wood in any
ordinary manner. Placing the edges of the segments in the openings between the
metal and the wooden lips I nail or otherwise fasten them there, or by simply
driving down the hoops the paper is forced into these spaces, and makes a tight
and durable joint. I then insert the heads, and the package is complete. In order
to strengthen the ends or chimes I put upon each end a strong hoop, which also
protects the paper from damage, and for heavy goods or merchandise I add two or
more intermediate hoops.
In case I desire to transport a large number of empty packages I can tie the
segments, joints, hoops, and heads in bundles, and thus save space and expense of
transportation, and put the parts together when they arrive at their place of
destination.
Having thus described my Invention what I claim and desire to secure by Letters
Patent is,―
1st. The above described method of making paper barrels or packages having a
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page_text: and B, constructed and operated as above described, by means of which the pre-
viously dampened paper for each segment is dried, shaped, the bilge made therein
and trimmed simultaneously, and made ready to be placed in the package, as above
described.
2d. The combination of the hollow male and female dies A and B, provided
with inlet and outlet pipes for the steam for heating them, and the trimming knives
u and r combined, constructed, and operated as above described.
3d. A paper package made in segmental parts having the central portion formed
with a bilge, and a short space at each end made straight and free from bilge, as and
for the purposes above set forth.
In witness whereof, I, the said William H. Murphy, have hereunto set my