Improvements in Bronzing Machines.
Year: 1897

page_text: Date of Application, 4th Dec., 1897-Accepted, 5th Feb., 1898
COMPLETE SPECIFICATION.
Improvements in Bronzing Machines.
We, RUDOLPH FRANK EMMERICH, and FREDERICK VONDERLEHR, both of No. 191,
Worth Street, New York City, State of New York, United States of America,
Manufacturers, 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:-
This invention relates to certain improvements in bronzing machines, the
object being to improve the structure of the machine in a number of directions,
so as to ensure the bronzing of the paper or other material in an effective and
complete manner, and at the same time prevent the waste of the bronze.
A practical embodiment of our invention is represented in the accompanying
drawings, in which :-
:-
Figure 1 is a view of the right hand side of the machine.
Figure 2. represents a vertical section from front to rear through the machine,
looking toward the right hand side of the same.
Figure 3 is a vertical section from side to side, in the plane of the line 3-3 of
Figure 2.
Figure 4 is a side view of the upper portion of the machine, showing the means
for driving the bronze distributing rolls.
Figure 5 is a vertical section in the plane of the line 5-5 of Figure 4.
Figure 6 is a top plan view of the said bronze distributing rolls and their
operating parts:
Figure 7 is a detail sectional view of a portion of the paper carrying cylinder,
shewing the gripper open, and the paper releasng pins forced outwardly to positively
remove the advance edge of the paper.
Figure 8 is a vertical transverse section through the paper carrying cylinder,
the section being taken in the reverse direction to the section shewn in Figure 2.
Figure 9 is a longitudinal section through the cylinder and its adjacent parts,
in the plane of the line 9-9 of Figure 8.
Figure 10 represents an enlarged detail vertical section through one of the
bronzing pads.
Figure 11 is an inverted plan of the pad, to indicate clearly its shape..
Figure 12 is a top plan view of the pads and their driving mechanism; and
Figure 13 is a vertical section through the same, in the plane of the line 13-13
of Figure 12.
A, A represent the side frames of the machine, in which is journalled a revolving
cylinder B. A feed board or table C is mounted upon forward extensions of the
side frames A, A', with its rear edge resting in close proximity to the cylinder B,
near its top. This feed table is adapted to support the sheets of paper or other
material which it is intended to treat with the bronzing process.
The main drive sliaft, denoted by D, is journalled in the side frames A A¹, and
is provided with a suitable driving pulley d, exterior to the side frame A.
The

page_text: drive shaft D is provided with a spur pinion d', which intermeshes with a spur
gear upon the shaft 6 of the rotary cylinder B, whereby the rotation of the shaft
will cause the rotation of the said cylinder.
The cylinder B is provided with a longitudinal trough or recess 2, within
which is mounted the paper gripping mechanism. This paper gripping mechanism
consists of the following parts: A rock shaft Ę is located within the trough b
and is mounted in the ends of the cylinder B. Upon this rock shaft E are secured
a number of outwardly-extending arms e; in the present instance, three are
shown; to the free ends of which arms is attached a gripper plate e¹, one edge
of the said gripper plate being normally held in engagement with a suitable seat b
upon the periphery of the cylinder B, along one of the edges of the trough 62.
The gripper plate e¹ is held normally closed by means of a spring-actuated bar e²,
which engages a suitable arm e³ upon the rock shaft E, exterior to one end of the
cylinder B. The arm e³ of the shaft E is further provided with an inclined cam et,
which is adapted to engage a pin e upon the side frame A', as the cylinder is
rotated, whereby the gripper is positively opened against tension of the spring
arm e², for permitting the gripper to receive the advance edge, of the paper, as it
is fed from the board C... A stud e6 is secured to the side frame A', at a point in
position to be engaged by the said came, carried by the gripper, for again opening
the gripper at the proper time to permit the sheet to be discharged. The forward
edge of the sheet is positively forced away from its seat 63, when it is desired to
discharge the sheet, by the following means:--
A rock shaft F is mounted in the ends of the cylinder B, and is located within
the trough 63. This rock shaft is provided with a number of arms f, the free ends
of which engage suitable pins f; which pass through the seat 63, and as the shaft F
is rocked, are caused to project a short distance beyond the face of the. said sheet.
This shaft is provided with a spring f2, for normally holding the pins beneath
the face of the seat 63, and it is further provided with an arm f³, which, projects
through the end of the cylinder B adjacent to the side frame A, and is adapted to
be engaged by a cam plate f upon the side frame A, as the cylinder is rotated.
This cam plate f' is located in such a position as to cause the pins f¹ to be forced
through the seat 63, upon which the edge of the paper rests, after the gripper has
been opened by its stud e6.
The bronze distributing mechanism is mounted at the top of the machine,
between the two side frames A A¹, at a point above the cylinder, and adjacent to
the feed table C. This bronze distributing mechanism consists of the following
parts:
!
:
The hopper for containing the powdered bronze is denoted by G, and it is
provided with a hopper shaped bottom g. As the bronze leaves the hopper G, it
is received upon the face of a roll g', which in turn deposits it upon the face of a
second roll 2, the face of which is adapted to rest upon the face of the sheet of
paper which is being drawn thereunder by the gripper of the cylinder B. These
rollers g, gare, provided with any suitable surface, such, for instance, as fur,
plush, or the like, and they are mounted in a pair of swinging frames H, the
pivot of the said frames being the shaft g3 of the roll g₁. The shaft g³ is provided
with a suitable pulley 'g, which is driven by a belt'g³ running to a pulley 96 upon
the shaft of the cylinder B. The belt is crossed so as to cause the shaft g
to rotate in the opposite direction from the shaft b. The rolls g¹, g², are caused to
rotate in the same direction, by causing a spur gear 97, carried by the shaft g³,
to mesh with an intermediate spur gear 98, which in turn meshes with a gear g⁹
on the shaft of the roll g².
These rolls g', 9 are caused to rotate only when the roller g³ is lowered on to
the surface of the paper, for distributing bronze thereon by means of a clutch I,
the arm i, of which is secured to one of the rocking frames H, the pivot of the
clutch being intermediate of the said arm i, whereby the raising of the frame. H
will slip the clutch and stop the rotation of the said rolls.
'
The length of time which the raller is permitted to rest upon t
..the
paper, ig

page_text: h
determined by a cam / carried by the shaft of the cylinder B, which cam engages
one end of a operating red h¹, the opposite end of which is secured to the free end
of one of the rocking frames H. The cam may be made adjustable, to increase
or diminish the length of time which the roll g rests up the paper, as may, be
desired. The front wall go of the hopper G may be adjusted up and down by
suitable screws g, for accurately adjusting the amount of bronze which may be
distributed, on to the face of the roll g
1.
The buffing or bronzing mechanism proper ccmsists of the following parts:
A rotary shaft J extends through the machine, and is mounted in end bearings
j,j, of a longitudinal reciprocating carriage mounted in the side frames A, A,
one end of the said shaft being provided with a suitable drive pulley which is
driven by a belt leading from a pulley of an intermediate, shaft K, which
passes through the machine at a point below the main drive shaft D, and is
journalled in the side frames A, A. This shaft K is provided with a pinion k', which
meshes with a spur gear d², on the main drive shaft 1).
The shaft J and its carriage are positively reciprocated longitudinally, as the
shaft is rotated, by means of a worm, which meshes with a worm wheel j which
worm wheel has secured thereto the free end of a link j, the cather end of the
said link being permanently pivoted to the side frame A.
The rotary bronzing pads are denoted by 8, the said pads being arranged in
pairs, as shown, the number of pairs, varying to suit the different machines. Each
of these pads is provided with an upwardly-extended stem 7, and the pad made
vielding by means of a spring j interposed between the back of the pad proper
and the bottom of the said stem.
The back of the pad 18 is provided with an upwardly extended stud 12 which
enters the stem, and the pad is further provided with a pair of guide screws..
which pass through a laterally extended flange 4 of the stem, and serve to
guide the pad in its yielding movement.
The face of the pad is of felt, fur, or any other suitable material, the shape of the
said pad being of the general form of a double wedge, the widest portion of the pad
being at its ends, and its narrowest portion at its middle.
These pads are arranged in pairs, geared together, as shown at j, j, one of
each set of gears being engaged by a worm 17 on the shaft J. Each pair of pads
is arranged with the pads at substantially right angles to each other, so that, as
the pads are rotated, their ends will overlap each other, thereby ensuring an even
polishing of, the bronze upon the surface of the sheet being treated.
The means for removing the superfluous bronze from the sheet, after, it has
passed over the bronzing pads, is as follows:-
-
A roller L has its shaft mounted in suitable adjustable bearings in the side
frames A, A, so that the said roller may be adjusted toward the surface of the
cylinder B. The roller L is caused to rotate in the same direction as the cylinder B
by a suitable pulley 12, having a belt 3, engaged with a pulley cin the shaft K
hereinbefore referred to. This roller L is faced with some suitable material, and is
driven at a high rate of speed.
A casing is formed at the back of the machine, the top wall of the casing being
denoted by M, and its back wall by m. A partition m¹ extends from the top wall
M of the casing, downwardly between the bronzing mechanism proper and the
roll L, thereby forming separate compartments for the said bronzing mechanism
and the roll. A second partition m² extends inwardly from the back-wall mof
the casing to a point adjacent to the periphery of the roller B, the said partition
being located a short distance beneath the roll L. This partition "m² is provided
with a longitudinally reciprocating sieve N, to be hereinafter more fully described.
An adjustable scraper 0 is hinged at its bottom in suitable lugs o uprising from
the partition m², the upper edge of the said scraper being adjusted to barely engage
the face of the roll L, for removing from the roll the superfluous, bronze which
the roll removes from the paper. This scraper O is provided with a link o con-
necting it with the shaft of the roller L, whereby, as the roll L is adjusted, the

page_text: Scraper O. will also be adjusted therewith. The bronze which is removed from
the sheet by the roll L is permitted to fall into the sieve N.
The sieve N is reciprocated longitudinally, for shifting the bronze, by means of
a rocking lever or shaker pivoted at n to the side frame A, one end n¹ of the said
¡ever being connected to the end of the sieve N, and its other end n² entering a cam
groove p² in a rotary cam p', carried by the shaft p of the delivery roll P. The
shaft P of the said delivery roll is rotated by means of a pinion p³, which meshes
with the spur wheel b' of the cylinder B.
A hopper Q is located beneath the sieve N, in position to receive the bronze
therefrom, and in the bottom of the said hopper is located an endless conveyer q,
which conveys bronze from the bottom of the hopper into a suitable drawer or
receptacle at the exterior of the side frame A', where the said bronze may be
removed for further use. The conveyer q is rotated by means of a pulley q² on its
shaft, which pulley is engaged by a belt q³, driven by a pulley q' or the cylinder
shaft b.
The delivery roll P hereinabove referred to, is mounted with its face in close
proximity to the periphery of the cylinder B, the purpose of the said roll being
to deliver the paper from the cylinder after the gripper has released the forward
edge of the sheet.
The drawing rolls are denoted by R, R¹; the said rolls being rotated by means of
a gear p, which meshes with an intermediate gear r. which in turn. meshes with a
gear on the roller R, the gear in turn meshing with a gear 2 carried by the
roller R¹. These drawing rollers R, R', lead the sheets to a suitable fly board S¹,
whence they may be removed at pleasure.
The means for positively ensuring the removal of the sheet from the cylinder,
and guiding it from the delivery roll P to the drawing rolls R, R¹, is as follows:-
A pair of rigid cross braces or bars T, U, extend between the side frames A, A¹,
beneath the cylinder B. A plurality of strippers t are clamped along the bar T,
with their free edges t! in engagement with the periphery of the cylinder B. Each
of these strippers is provided with a downwardly extended lip 2: Upon the cross
bar U are secured a plurality of guides u, corresponding to the strippers t, the
upwardly extended arm u¹ overlapping the lip 2 of its corresponding stripper, and
the downwardly extended arm extending into close proximity to the meeting
faces of the drawing rolls R, R1, whereby the sheet, as it is stripped from the
cylinder B, is guided directly into engagement with the said drawing rolls. The
strippert is made adjustable to take up the wear upon its end t¹; by means of a set
screw ³. The guide u is also adjustably clamped in position by means of a set
screw ³. It will be seen that as the stripper is adjusted to compensate for wear
because of its frictional engagement with the cylinder B, it will not in any way
interfere with the guide u. Furthermore, it will be seen that the said strippers
may be renewed at pleasure without having also to renew the guides. The free
edge of the gripper plate el is provided with a series of slots e, for permitting the
strippers to pass through the said gripper plate e', when the gripper is opened
for releasing the sheet.
The operation of the machine is as follows:-
The sheet of paper or other material to be bronzed is fed from the table C to
the gripper on the cylinder B, and after the gripper has engaged the advance edge
of the paper of the sheet, the said sheet is drawn first beneath the bronze distributing
device. From there it is passed beneath the buffing or bronzing pads. The sheet
is then engaged by the superfluous bronze removing roll L, and from thence is
led to the delivery roll P and the sheet removing mechanism to the fly board S.
By this mechanism the sheet is evenly and economically bronzed, and the super-
fluous bronze which fall's into the sieve N is sifted to remove all extraneous or
foreign matter therefrom; the sifted bronze being in condition for being again
used by the bronze distributing mechanism..
It is evident that slight changes might be resorted to in the form and arrange-
ment of the several parts, without departing from the spirit and scope of our inven-

page_text: tion; hence we do not wish to limit ourselves strictly to the structure herein set
forth; but
:
Having now particularly. described and ascertained the nature of our said in-
vention and in what manner the same is to be performed, we declare that what
we claim is:-
-
1. In a bronzing machine, a sheet carrier comprising a cylinder having a spring
actuated gripper in its periphery for clamping the advance edge of the sheet to
the carrier; means for opening the gripper as the cylinder is rotated; and means
carried by the cylinder for positively lifting the advance edge of the paper away
from its seat when the gripper is opened, substantially as set forth.
2. In a bronzing machine, a rotary cylinder, a spring actuated gripper seat
therein for clamping the advance edge of the sheet to the cylinder, means fcr
opening the gripper, and means for positively lifting the advance edge of the sheet
away from its seat on the cylinder, when the gripper is released, comprising a rock
shaft carried by the cylinder, a plurality of arms carried by the said shaft, pins
carried by the free ends of the said arms, the said pins being adapted to project
through the said seat in the cylinder, when the shaft is rocked in one direction,
and means for positively rocking the shaft to force the said pins through the seat,
substantially as set forth.
3. In a bronzing machine, the combination with the carrier for the sheet to be
bronzed, of a bronze distributing device comprising a hopper for containing the
bronze, a roll for receiving the bronze from the hopper, a second roll for receiving
the bronze from the face of the first named roll, means for rotating the rolls, and
means, under the control of the movement of the carrier, for raising the second
named roll out of engagement with the face of the carrier at predetermined intervals,
substantially as set forth.
,
,
4. In a bronzing machine, the combination with a carrier for the sheet to be
bronzed, of a bronze-distributing device comprising a hopper for containing the
bronze, a roll for receiving the bronze from the hopper, a second roll for receiving
the bronze from the face of the first named roll, a swinging frame in which the
said rolls are mounted to rotate, and means, under the control of the movement
of the carrier, for swinging the said second roll bodily away from its contact with
the face of the carrier, and stopping the rotary movement of the rolls, substantially
as set forth.
5. In a bronzing machine, the combination with a sheet carrier, of a bronzing
mechanism located in position to engage the sheet, the said bronzing mechanism
comprising a plurality of bronzing pads, and means for simultaneously rotating and
reciprocating the said pads, substantially as set forth.
6. In a bronzing machine, the combination with the sheet carrier, of a bronzing
mechanism located in position to engage the sheet, the said bronzing mechanism
comprising a carriage, a plurality of bronzing pads mounted in the carriage, and
means for simultaneously rotating the pads and reciprocating the pad-carrying
carriage, substantially as set forth.
7. In a bronzing machine, the combination with a sheet carrier, of a bronzing
mechanism located in position to engage the sheet, the said bronzing mechanism
comprising a carriage, elongated pads carried by the carriage, the said pads being
arranged in pairs with their longitudinal axes at substantially right angles to each
other, each pair being aranged so that the pads will overlap each other as they
are rotated, and means for rotating the pads, substantially as set forth.
8. A pad for bronzing machines of greater width at its opposite ends than at its
middle portion.
9. In a bronzing machine, the combination with the sheet carrier, of a bronzing
mechanism comprising a carriage, pads carried by the carriage, a shaft mounted
to rotate in the carriage, and geared to the said pads, for rotating them, means for
rotating the shaft, and means for engaging the shaft, for causing it, and thereby
the carriage, to reciprocate, as the shaft is rotated, substantially as set forth.

page_text: 10. In a bronzing machine, the combination with the sheet carrier, of a superfluous
bronze removing roll mounted in position to engage the face of the carrier, a hinged
scraper having its free edge connected with the roll support, and means for adjusting
the roll toward and away from the face of the carrier, substantially as set forth.
11. In a bronzing machine, the combination with the sheet carrier, of a super-
fluous bronze removing roll mounted in position to engage the face of the carrier,
a sieve for receiving the bronze from the said roll, and means, under the control of
the movement of the carrier, for reciprocating the sieve, substantially as set forth.
12. In a bronzing machine, the combination with sheet carrier, of a superfluous
bronze removing roll mounted in position to engage the face of the carrier, a sieve
for receiving the bronze from the said roll, means for reciprocating the sieve, a
hopper for receiving the sifted bronze, a suitable receptacle, and a conveyer for
carrying the sifted bronze from the said hopper to the said receptacle, substantially
as set forth.
J..
13. In a bronzing machine, the combination with a sheet carrier and drawing
rolls, of means for positively removing the sheet from the carrier, and directing
it into engagement with the said drawing rolls, comprising an adjustable stripper
having its edge in engagement with the face of the carrier, the said stripper being
provided with a downwardly-extended lip, and a guide having its upper arm over-
lapping the said lip, and its lower arm in close proximity to the said drawing-rolls,
substantially as set forth.
Dated this 4th day of Dagamhan 1907