Improvements in Paper-box Machines.
Year: 1890

page_text: Date of Application, 27th May, 1890-Accepted, 27th Dec., 1890
COMPLETE SIMULFICATION.
[Communicated from abroad by PATRICK HENRY KNIGHT, of Gray, in the State of
Maine, and WILLIE ADELBERT KNIGHT, of Lewiston, in the State of Maine,
United States of America.]
Improvements in Paper-box Machines.
I, SAMUEL SIDNEY BROMHEAD of 97 Newgate Street, London, E.C., Patent Agent,
(communicated).
Our invention relates to improvements in paper-box machines and more especially
to machines for setting up boxes which are composed of a body part having narrow
flanges turned in at the edges and an end blank pasted thereon. Its object is
automatically to apply paste to the end blank, convey it to the end of the body blank
which is in position on the mold block and then press it against the said body blank.
The body blank is formed by folding a piece of pasteboard to form a bottom and two
sides, then folding in each end to form a flange of about an inch in width to which
said flange the end blank is pasted. It is designed to apply both ends at the samo
time, and therefore the mechanism at each end of the mold block is the same excepting
that the power shaft and the shafts which adjust the carriages extend through the
entire length of the machine.
It consists of a suitable supporting frame, a mold block set on said frame at the
centre of the top, a power shaft journalled in the frame, a carriage adapted to slide
back and forth on said frame, and mounted on said carriage a paste pan, pasters, end
blank holder, rotary drum, chute, feeding plunger, presser plunger and means for
operating these several parts. It further consists in an improved mold block, improved
pasters, adjustable flanges to guide the end blanks and improved mechanism for
adjusting the carriages on the frame so as to make boxes of different lengths; all of
which together with other details will be more fully described hereinafter.
In the drawings herewith accompanying and making a part of this application,
Fig. 1, is a longitudinal section of the mechanism at one end of the mold block;
Fig. 2. is an end view with parts broken off;
Fig. 3. is a detail of the cam on the power shaft for giving a reciprocating motion
to the mechanism ;
Fig. 4. is an end view of the rotary drum from that end where it is operated;
Fig. 5. is a view of the drum showing adjustable grooved holders;
Fig. 6. is a detail in plan view showing adjustable flanges and means for adjusting
the same;
Fig. 7. is a plan of the carriage frame showing ways for the feeding plunger,
pasters, end-blank holder and means for adjusting said holder i
Fig. 8. is a cross section of a paster;
Fig. 9. is a longitudinal section of a part of the block;
Fig. 10. is an end view of said block, and same letters refer to like parts.
In said drawings A represents the supporting frame of the machine, B a carriage
adapted to slide on said frame, Ca mold block rigidly set on the top of the machine
frame at its centre, and D the power shaft journalled in said frame. Said carriage has a
frame composed of standards a attached to its sides, side bars b attached to said standards
and cross tie rods c uniting said side bars. Adapted to slide on said ties c are two
beams d which may be locked in any given position by keys d" thereby providing for the
lateral adjustment of the side pasters and the end blank holders. Between beams d
are two ways e set on the cross ties c for the feeding plunger to travel on. Rigidly
attached to the said beams d are the parts which form the sides of the blank holder.
Said parts have flanges extending inwardly 9", said flanges not extending quite down
to the top of the beams d but leaving a space h¹ sufficient for the passage of a single

page_text: blank. An angle-plate a" having a slot 6 and held in place by a bolt c" so as to slide
back and forth on beams d prevents the blanks from moving in a backward direction,
while the flanges gll prevent all except the bottom one from moving the outer edges
of the lower end blank resting on the inner edges of the beams d. Pivoted to the inuer
sides of the beams are bent rods g which carry on their free ends the side pasters ¿¹¹
and pivoted to the insides of the ways e are the bent rods h which carry on their ends
the cross-paster i which has a shoulder w' on which the ends of the side pasters rest,
said side pasters having their ends cut under therefor, as shown at 8". The two rods h
are connected by a plate e" so that they may both be raised or lowered by a single
connecting link as a, as seen in Fig. 1. Directly beneath the blank holder is
suspended a paste panj, one end resting in a pivoted swing k¹ in order to facilitate
⚫the removal of the pan.
Journalled in the carriage frame is a rotary drum having the ends a¹ and the tie-
rods connecting said ends a'. These rods 6' pass through plates which have
grooves dat right angles to each other. These plates care adjusted to receive
blanks of different sizes by means of the presser screws which pass through the
sides a¹ and are swivelled in the outsides of said plates. Rigidly set on the journal
of said drum is a plate f" having four projecting hooks 9 equidistant from each
other.
Mounted on the carriage platform B are the toggle-arms m and m³ having hinge
connection n. The arm m has pivoted to the end thereof the presser plunger
which is arranged to slide on said platform, and the arm m is pivoted to the rear of
said platform. The hinge n has the link p extending downwardly through a hole o
in the platform, said link being connected with the cam-wheel r on the power shaft by
the cam-shaft 9, which has a cam-pin t adapted to run in the cam groove in said
wheel as shown in Fig. 3, whereby said toggles receive a vertically reciprocating
motion. The toggle arm m has a lever arm u extending upwardly and carrying on
its upper end the pivoted link to which is pivoted the feeding plunger w, said
plunger being adapted to slide back and forth on the ways e aforesaid. Extending
out from lever u is a projection a, having therein a sloty. Connecting the projection
and the plate e" is a link z whereby the pasters are raised and lowered in the paste-
pan. Extending out from the side of lever u is a projection to which is pivoted an
arm, extending upwardly to the drum and having a hook on its free end adapted to
engage with the hooked projections g' on the plate f", whereby said drum is revolved
as the lever swings to and fro.
Between the sides of the main frame A and supported on a cross beam are two
rods upon which slide the sleeves which carry upwardly extending flanges s¹.
Flanges are constantly held against the face of the pressure plunger by a spring u
as seen in Fig. 1, and they are adjustable sideways by means of the threaded screws q¹
passing through threads in said bars as seen in Fig. 6 to hold end blanks of different
sizes. These flanges or guides s¹ guide the end blanks as they fall from the chute k,
into their proper position at the end of block or mold c, to be applied to the end of a
body blank placed thereon. When the presser plunger is driven forward it carries
with it the flanges s' and when it is drawn back the said flanges would be left, were it
not that the spring u¹ draws them back and keeps the said flanges constantly against
the face of the plunger.
The carriage itself together with the mechanism mounted thereon is adjustable on
the main frame in order to enable the same machine to make boxes of different sizes.
For this purpose shafts are journalled in the main frame, said shafts having thereon
the screw threads m³ adapted to run in threaded lugs n' extending downwardly from
the bottom of the carriage platform. At the end of shafts are cog wheels of which
mesh with a power cog wheel p', whereby shaft, is caused to revolve and the carriages
made to advance or recede according as the shaft l', is revolved towards the right or
left, and the thumb-screw 2, in the cam on the power shaft being loosened permits
said cam to slide on the power shaft to correspond with the movement of said
carriage.
The pasters consist of a thin sheet of metal bent around a rod, which in case of the

page_text: side pasters, may be the ends of the rods g, the two edges of said sheet of metal being
separated at the top to form a shallow trough X', to take up a small quantity of
paste.
It sometimes happens that a small quantity of paste is pressed out when the end
blank is pressed against the end of the body blank. In order to take up this waste
paste and to prevent it from collecting on the end of the mold-block, a small groove
or channel y is made in the end of the mold-block at the point where the edge of the
flange on the end of the body blank would come when said blank is placed thereon.
The operation of my improved machine may now be readily understood. A
quantity of end blanks of which one only is shewn as seen in Fig. 1 is placed in
the blank holder fand the machine set in the position shown in Fig. 1. The power
shaft is then revolved and the cam draws down the toggle arms, driving the presser
plunger forward against the mold At the same time lever u is driven forward, the
feeding plunger striking against the lowest of the blanks in the holder and forcing it
through into the drum, the link draws down the pasters to receive a fresh supply of
paste and the rod j¹ moves up till the hooked end engages with the hook which
happens to be at the top of plate f". The parts are then in the positions shown by
dotted lines in Fig. 1. As the cam continues to revolve, the toggles are again raised,
the presser and feeding plungers are drawn back, the drum is turned one quarter
round by the hook on the end of rod and the pasters are forced up against the next
blank in the holder. The blank in the drum, when turned into a vertical position,
falls into the chute and thence to the end of the mold.
Whereas the presser plunger again moves forward, it is firmly pressed against the
turned in edges of the body blank, which is placed on the block when the presser
plunger is drawn back. The body blank is placed upon the block to receive the end
blanks and, after the end blanks have been applied, is lifted therefrom by the hand of
the operator.
What we claim and desire to secure by Patent is :
1. In a paper box machine having a suitable supporting frame the combination with
a reciprocating presser plunger, a reciprocating feeding plunger, end blank holder,
paste pan and pasters and mold for the body blank, of a rotary drum adapted to receive
the end blanks as they are driven out from the holder and give them a vertical position
and mechanism for operating these several parts, substantially as described, as and for
the purposes set forth.
2. In a paper box machine having a suitable supporting frame, the combination
with a reciprocating presser plunger, a reciprocating feeding plunger, end blank
holder, paste pan and pasters and mold for the body blank, of a rotary drum adapted
to receive the end blank after it is pasted as it is driven out from the holder and a
chute leading from said drum to the end of said mold and means substantially as
described for operating these several parts, as and for the purposes set forth.
3. In a paper box machine, a mold block for the body blank having a groove in its
ends at the place where the edge of the flange of the blank comes to take up waste
paste, substantially as and for the purposes set forth.
4. In a paper box machine, the combination with beams placed between the sides of
the machine frame and adjustable laterally by a screw bolt passing through them, of
guides for the end blanks having sleeves adapted to slide on said beams and springs
which constantly hold said guides against the face of the presser plunger, substantially
as and for the purposes set forth.
5. In a paper box machine, a paster formed by bending a thin sheet of metal around
a suitable base, thence extending the sides upwardly and separating the upper edges
to form a cup to take up a quantity of paste as and for the purposes set forth.
6. In a paper box machine having a suitable supporting frame the combination
with carriages mounted so as to slide in said frame and bearing the pasting mechanism
and having threaded lugs extending downwardly, of shafts having threads thereon
adapted to work in said lugs, said shafts being journalled in the frame and having

page_text: cogs at one end which mesh with a driving cog, substantially as and for the purposes
'set forth.
S. S. BROMHEAD,
97, Newgate Street, London, E.C.