Improvements in Dusting Machines for Removing Superfluous Powder from Bronzed Sheets.
Year: 1899

page_text: Improvements in Dusting Machines for Removing Superfluous
Powder from Bronzed Sheets.
I, RUDOLPH FRANK EMMERICH, of No. 191, Worth Street, in the City of New York,
State of New York, United States of America, Manufacturer, 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 dusting machines, in which the
bronzed sheets, after they have been fed into the machine, are gripped by an endless
carrier, and drawn upwardly through a tight box or casing, where they are engaged by
superfluous bronze removing rolls.
My invention contemplates means for aligning the advance edge of the paper;
means for rapidly advancing it to an endless carrier; means for causing the advance
edge of the sheet to be accurately and smoothly grasped by clamps carried by the
endless carrier; adjustable means for releasing the sheet after it has passed through
the dusting box; and means for positively and rapidly delivering the sheet from the
machine, after the sheet has been released.
My invention further contemplates the use of cutting mechanism located between
the sheet-feeding mechanism and the endless carrier, for severing the sheet into a
plurality of smaller sheets. My invention further contemplates means for rendering
the dusting box tight, so as to prevent the escape of the bronze therefrom.
A practical embodiment of my invention is represented in the accompanying
drawings, in which―
Fig. 1 is a front view of the machine, a portion of the feeding and delivery
tables being cut away.
Fig. 2 is a view of the left side of the machine.
Fig. 3 is a view of the right side of the machine.
Fig. 4 is a detail view of a portion of the right side of the machine, with the
operating parts in a different position.
Fig. 5 is a vertical section from front to rear through the machine, taken in the
plane of the line 5-5 of Fig. 1, looking toward the left side of the machine.
Fig. 6 is an enlarged detail view of an endless carrier and its adjacent parts,
the sheet clamp being represented as open, and the bar for depressing and guiding
the advance edge of the sheet into the clamp, being shown in its lowered
position.
Fig. 7 is a similar view, with the clamp represented as locked in its closed position,
and the sheet guide bar in its raised position.
Fig. 8 is a partial front view of the parts in the position shown in Fig. 6; and
Fig. 9 is an enlarged detail view of another portion of the endless carrier and its
adjacent parts, showing the adjustable means for opening the clamp, to release the
sheet.
The side frames of the machine are denoted by A A', which frames are rigidly
spaced apart by means of suitable cross beams a. The side frames are provided, at
their bases, with forwardly extended brackets a¹, a2, to the free ends of which is
secured the feed table B.

page_text: The means which I employ for producing an alternate forward and backward
rotary movement to the roll g, consists of a rocking sector rack g², mounted on the
bracket a², which sector rack intermeshes with a pinion g³ fixed to the shaft G of the
said roll. The sector rack g² is provided with a connecting rod g*, which is provided
with a stud or collar g³, which is engaged by a cam 2 fixed on the cam shaft I.
The means which I employ for rocking the shaft h³, and thereby raising and lower-
ing the friction roll h, comprises a rearwardly-extended arm 8, fixed to the rock
shaft 3, and provided with a stud or roller hº engaged by a cam ³ fixed to the cam
shaft I.
A cutting mechanism is mounted to the rear of the sheet advancing rolls for use
in severing the sheet into a plurality of smaller sheets. This cutting mechanism
comprises upper and lower rotary shafts J, J, mounted in adjustable bearings in the
brackets a¹, a², so that they may be adjusted bodily up and down, and also toward
and away from each other. These shafts are provided with one or more pairs of
cutting discs j j', in engagement with each other. The rotary shafts J, J¹, are pro-
vided with intermeshing gears j², j³. A rotary movement is imparted to the gear j
by means of an intermediate gear j', which intermeshes with the gear j³, and also
with a gear wheel clo, fixed on the sprocket shaft c³.
The operation of the several parts is so timed, that a clamp D comes into the
position shown in Fig. 6, as the sheet is fed forward by the sheet-advancing rolls.
To ensure the even and positive grasping of the entire advance edge of the sheet by
the clamp, I provide a guide plate K, which extends across the machine, above the
sprockets c², which guide plate is mounted in the free ends of swinging arms k, fixed
to a rock shaft k¹, mounted in the side frames A, A¹. This plate is arranged to coact
with a cross plate L, which extends across the machine between the sprockets c²,
which plate L is adjustably secured to the peripheries of a plurality of intermediate
wheels, l, fixed to the shaft c³.
A pair of superfluous bronze removing rolls m, m³, are fixed to rotary shafts m², m³,
in position to engage the faces of the sheet, as it is drawn through the dusting box.
These shafts m², m³, are suitably mounted in adjustable bearings carried by the
dusting box. The front shaft m² is driven by means of a belt m³, leading from a
pulley m fixed to the shaft m², to a pulley m fixed to a shaft m', which shaft m' is
geared to the main drive shaft F by means of a pinion m³, which intermeshes with
a gear. The rear shaft m³ is driven in the reverse direction to the shaft m² by
means of a belt me, which leads from a pulley 10, fixed to the shaft m³ to the
pulley m¹, fixed to a shaft m¹². This shaft m12 is driven by means of a pinion m¹³,
which intermeshes with a pinion ms on the shaft m7.
The dusting box is rendered tight, to prevent the escape of the bronze, as it is
being dusted from the sheet, by spacing the adjacent edges of the sections M, M³,
apart; providing spring actuated sliding shutters N along the side edges of the box,
and hinged doors n, n', along the bottom and top edges of the box. The bottom
doors n extend upwardly into the interior of the box, and are provided with flexible
meeting edges, and depend upon gravity or springs for keeping them normally closed.
The upper pair of doors n' are also provided with flexible meeting edges, and are
arranged so that they normally close by gravity or springs.
The edges of the spring-actuated shutters are provided with some yielding material,
such, for instance, as fur, to still further ensure the retention of the bronze dust within
the box.
A plurality of swinging delivery arms O are fixed to a cross rock shaft o, mounted
in the side frames A, A, at points just inside the front portion of the carrier chains,,
and at a considerable distance above the dusting box. These arms O are alternately
swung to the front and rear of the front portion of the carrier chains by means of a
cam fixed on the cam shaft I, which cam engages a stud or roller o¹ carried by one
arm of a rocking lever o², the other arm of which is provided with a connecting bar o³,
which leads to a toggle lever of, one arm of which is mounted on the side frame, and
the other arm secured to one of the said delivery arms.

page_text: 2. In a dusting machine, paper-advancing rolls, suitable supports therefor, the said
rolls being geared together, means for imparting to the rolls alternate forward and
backward rotary movements, and means for swinging one of the rolls out of its geared
engagement with the other roll, at intervals, substantially as set forth.
3. In a dusting machine, a friction roll, a stationary support therefor, a second
friction roll geared to the first-named friction coll, a swinging support therefor, paper
aligning stops carried by the last-named roll, means for swinging one of the rolls
away from the other, and means for swinging the stops down into the plane of the
space between the rolls, substantially as set forth.
4. A dusting machine, comprising a suitable frame, a pair of paper-advancing rolls,
a stationary support for one of the rolls, a swinging support for the other of the rolls,
a rotary cam shaft mounted in the frame, for imparting to the rolls an alternate
forward and backward rotary movement, for swinging one of the rolls into and out of
geared engagement with the other roll, substantially as set forth.
5. A dusting machine, comprising a suitable frame, an endless carrier mounted
therein, clamps carried by the endless carrier, means for feeding sheets to the endless
carrier, and additional means for positively directing the advance edge of the sheet
into engagement with one of the clamps, substantially as set forth.
6. In a dusting machine a suitable frame, an endless carrier mounted to travel
therein, clamps carried by the carrier, means for feeding a sheet to the clamp, and
means for positively directing the advance edge of the sheet into engagement with
one of the clamps, comprising a swinging plate arranged to engage the face of the
sheet, and guide the said advance edge into the clamp, substantially as set forth.
7. A dusting machine, comprising a suitable frame, an endless carrier mounted to
travel therein, a sheet advancing mechanism arranged to feed the paper to the
carrier, and a cutting mechanism located between the sheet advancing mechanism
and endless carrier, substantially as set forth.
8. In a dusting machine, a suitable frame, an endless carrier mounted to travel
therein, clamps carried by the said carrier, means carried by the frame for closing
the jaws of the clamp, a catch carried by the clamp, in position to lock the jaws in
their closed position, and means carried by the frame in position to trip the catch, to
perinit the jaws of the clamp to open, substantially as set forth.
9. In a dusting machine, a sectional dusting box and an endless carrier mounted
in the frame, in position to draw the sheet to be dusted upwardly through the said
box, substantially as set forth.
10. In a dusting machine, a suitable frame, a dusting box carried thereby, com-
prising two sections, an endless carrier arranged to draw the sheet to be dusted
between the said sections of the box, the said box being provided with means for
closing the top, bottom, & sides thereof, for preventing the escape of the bronze,
substantially as set forth.
11. A dusting box, comprising two sections, having swinging doors arranged to
close the top and bottom of the box, and sliding shutters arranged to close the sides
of the box, substantially as set forth.
12. In a dusting machine, a suitable frame, an endless carrier arranged to draw the
sheet through the machine, means for releasing the sheet at a predetermined point,
and means for positively delivering the sheet from the machine, as it is released from
the endless carrier, substantially as set forth.
13. In a dusting machine, a suitable frame, a sheet-delivering device, comprising
one or more rotary friction delivery rolls, mounted in the frame, a plurality of
swinging delivery arms hinged to the frame, one or more idle friction rolls carried by
the said arms, opposite the one or more of the first-named friction delivery rolls,
whereby, as the delivery arins are swung forward, the said rolls are cause to rotate
in unison, substantially as set forth.
14. In a dusting machine, a suitable frame, an endless carrier, a sheet advancing
nechanisin, mechanism for causing the advance edge of the sheet to be engaged by
the endless carrier, a sheet delivery mechanism, and a rotary shaft arranged to control
the movements of the sheet-advancing mechanism, the mechanism for guiding the
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