Purposes.
Year: 1886

page_text: Purposes.
I, FREDERIC CLIFFORD BELCHER of Canton Norfolk County State of Massa-
chusetts in the United States of America 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:-
The chief object of my Invention is to provide machines for making paper bags
with a mechanism whereby the web of paper to be formed into a tube and then
cut into bag lengths and folded to form bags may be printed before forming the
tube.
My Invention may be readily applied to the class of machine represented in
English patent N° 100434 dated 25th August 1885 and may also be employed in
connection with other well known paper bag making machines or for other
analogous printing purposes I will describe the Invention with reference to the
accompanying drawings as applied to the printing of a web of paper for bag
making from which its general application will be equally well understood.
Figure 1 represents in elevation with parts broken away a stand to hold the roll
of paper to be made into a tube Figure 2 is a vertical section of the ink feeding
pump Figure 3 is a detail showing one of the devices for regulating the pressure
between the two rollers employed to produce tension upon the web of paper as it
passes from the printing rolls to the tube forming mechanism.-Figure 4 is a detail
of the tappet-arin for raising the printing roller from the paper Figure 5 is a plan
of Figure 1, the paper being partially broken away-Figure
illustrates in
elevation (drawn to a larger scale) the printing roller and Figure 7 is a section
thereof taken on the line x-x Figure 6. Figure 8 is a section on the line a¹¹
Figure 5, and Figure 9 is a section of Figure 8 taken on the line x³-x³ it showing
the adjustable divided sleeve for securing the roll of paper to the shaft.
The stand A is of any suitable construction to sustain the parts-has boxes to
receive the shaft a of the under roller a¹ which is one of a pair of tension rollers,

page_text: the other of the pair being marked a². The shaft a³ of the roller a² is held at
each end in bearings a placed in guides formed between uprights a³ so that the
periphery of the roller a³ rests on the periphery of the roller a the said bearings
not reaching the bottoms of the slots in which they are free to rise and fall, each
bearing a Leing acted upon by a spring a which at its upper side sustains a
wedge like cap a7 (see Figure 3). The uprights a³ are connected at top by means
of a tie c and under each tie and between it and the wedge like cap is placed a
wedge block b the wedge blocks at opposite sides of the machine being connected
together by a screwed rod b¹ having at one end a right and at its other end a left
hand thread, the said screw having a thumb wheel c¹ by which to rotate it and draw
the wedge-blocks in one or the other direction the movement of the blocks toward
each other compressing the springs a and causing the roller a³ to be borne against
the paper p on the roller a¹ with more or less force, and vice-versa, the greater the
force the greater the tension produced on the roll of paper as it passes to the tube
forming mechanism (not shown) which may be of any usual construction, or to
other required mechanisin or place.
The screwed rod 61 is prevented from longitudinal movement by means of a
screw 13, extended through a box 14 attached to the frame work see Figure 5,
the point of the screw entering an annular groove in the screwed rod.
The paper to be made into a tube is rolled upon a shaft and the shaft is with-
drawn from the roll p³ which is placed upon the expansable roll composed of the
shaft & having journals to enter boxes in arms A³ of the frame work, and of two
semi-cylindrical or concaved shells d¹ d¹ (Figs. 8 & 9) each adjustably attached
thereto, at one end by a right and left handed screw d' the opposite ends of the
shells being each connected adjustably with the shaft d by means of screws d
adjustment of the said screws expanding the shells and preventing slipping of the
roll of paper with relation to the said shaft.
A friction brake D regulates the restraint put upon the shaft of the roll.
The web of paper p is passed over the leading roller e, and the bed-roller e¹
and thence between the rollers a¹ a² the web being taken between the latter by
direct strain on the paper beyond the said rolls toward the tube forming
mechanism.
1
The shaft a³ of the roller a² rotated by the pull of the paper, is provided with
a pulley e (see Figure 5) which, by a crossed cord or belt es extended over the
pulley et fast on the stud e rotates the said pulley e it having at back of it a
small pulley e which is surrounded by a belt e that is extended over and rotates
the larger pulley es also mounted upon a stud, the latter pulley having attached to
it a crank the pin of which, as herein shown, is made as part of a plate
attached to the said pulley by screws in slots in the plate, to thus render the
crank-pin adjustable as to its throw. The crank-pin f has attached to it a link f¹
which is preferably divided at its centre and has a nut f' by which to adjust its
length. This link fat its upper end, is joined to the cross beam f³ pivoted at f*
on a standard 3, the opposite end of the said cross beam being joined by link f³
⚫ with the piston rod fo which is extended down into the ink holding cylinder g and
through the piston guides g¹ g' the latter guides being fast upon the rod g² (see
Figure 2) The lower end of the piston rod g¹ is located. just above a measuring
tube g³ open at both ends and fitted into the open upturned end or wall g of a
feed pipe g extended out from the cylinder g up and across the ink roll d the
delivery branch 97 (see Figure 5) of the said pipe being perforated to permit the
discharge of ink therefrom at intervals upon the roll h.
The pipe g has a check valve 98 to prevent any backward flow of the ink in the
said pipe.
The ineasuring tube g³ is connected with a rod gr the rotation of which causes
its screw threaded end to raise or lower the said tube g³ the higher the tube with
relation to the end of the reciprocating piston f the greater the portion of the said
piston to enter the said tube and the greater the quantity of ink which will be
displaced by it and forced beyond the check-valve 98.

page_text: The ink to be used is poured into the cylinder g by removing the cover 4, and
to clean the cylinder the ink therein may be drawn out through the valve 5.
The ink deposited in small drops upon the felt covered ink roll h is taken
therefrom by the felt covered spreading roll h and is applied to the type held on
the type-cylinder h³ the axis or shaft of which is placed in boxes h moveable
vertically in a slot between the uprights the undersides of the said boxes resting
upon the ends of levers he, one at each side the frame work, each lever having a
fulcrum 6 and being joined at its rear end by a link h' to an arm h³ of a rock
shaft 7 the said rock shaft having an arm 12 (see dotted line Figure 1) which is
acted upon by a cam rest m attached to a rod m¹ held in suitable bearings and
partially rotated by hand the movement of the cam rest m in the direction of the
arrow thereon. Figure 4 lifting the arm 12 and effecting the raising of the roll h³
from the paper while the latter is being introduced into or is entering the machine
and-keeping it raised until the paper is in position to be printed.
When the apparatus is used in connection with paper bag making machines the
circumference of the roll h³ is most conveniently twice as long as the tube to he
used for the bag to be made. The types used are preferably of india rubber or
some equivalent material attached to a fibrous backing, the latter marked n being,
held in place on the roll ³ by the clamp n' pivoted at n² and acted upon by the
screw n³ (see Figure 7.
To enable the spreading roller to yield somewhat as it runs upon and across the
type I have provided back of the boxes 17 for the roll h springs 18 which are
adjusted as to their strength by the screws 19 (see Figure 1).
The upper part of the frame work has two uprights A³ As the one at the front
Figure 1 being broken out to show the parts behind it. Those uprights at top are
joined by a cross beam A having near its center depending ears 20, 20, the said
cross beam being partially broken out in Figures 1 and 5 and the ears being in
section in the latter Figure. The ears receive screws 21 which serve as centers or
pivots for the rocker-bearing 24 attached to and forming part of a yoke 25 having
depending arms 26 at the lower ends, of which receive center screws 28 that serve
as the pivots for the ends of the shaft of the roll e¹.
The boxes for the rolls h and h³ are supported in arms forming part of the
yoke 25, the oscillations of the yoke accommodating irregularities in the paper.
Instead of employing the oscillating yoke referred to I may place the roll e in
bearings so that it may oscillate.
In some classes of work the roll e may be omitted, and in such case the
oscillation of the yoke will be retained. The central position of the paper will be
gained by the screw o.
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
First The printing cylinder and type thereon, having a flexible backing n,
combined with clamps to hold the type in place substantially as hereinbefore
described and illustrated more particularly in Figures 6 and 7.
Second-The shaft d to receive the roll of paper, or other material and the
shells and screws to expand the shells and retain the roll of paper or other material
in position substantially as herein before described and illustrated more particularly
in Figures 8 and 9.
Third: The rolls a¹ a² the screw having the wedge blocks, and the caps and
springs to vary the pressure and tension of the said rolls upon the web of paper or
other material passing between them substantially as hereinbefore described.
Fourth In a printing mechanism for printing paper to be made into tubes or
for analogous printing purposes the pair of rolls a¹ a² to produce tension on the
web of paper or other material and the type roll and the impression roll, and the
cylinder and pump to supply the ink in regulated quantities combined with
the rolls h h³ to operate substantially as hereinbefore described.

page_text: Fifth The cylinder or container g the pipe having an upturned end gʻand the
adjustable measuring tube g, combined with the reciprocating piston, to operate
substantially as hereinbefore described.
Sixth: The impression roll and the type roll the levers and the rock-shaft 7
with which they are connected, combined with means to operate the rock-shaft to
lift the type roll from the paper or other material substantially as hereinbefore
described.