Year: 1899

page_text: Date of Application, 30th Nov., 1999-Accepted, 20th Jan,, 1900
I, ROBERT DENISTON HUME, of Gold Beach, Curry County, Oregon, Merchant,.
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:-
My invention relates to the manufacture of sheet metal ware, and more particu-
The object of my
larly to machines for soldering the side-seams of such ware.
invention is to furnish a machine for soldering lock-seams entirely from the outside
and in a complete and thorough manner, and thus to avoid the objections that are
sometimes made to inside soldering.
The mechanical structure in which I have embodied my invention is adapted for
use in many kinds of can-making machines, or in connection with thein; but
as a matter of convenience in description and illustration I have shown it as
applied to such a can machine as is shown, for instance in Letters Patent
No. 2781, dated February 2nd, 1897.
In the accompanying drawings:-
Fig. 1 is a side elevation of part of a can making machine with my invention
applied thereto;
Fig. 2 is an elevation of the same from the opposite side;
Fig. 3 is a cross-section of the can machine showing the soldering devices
partly in section and partly in end elevation;
Fig. 4 is a top plan;
Fig. 5 is a bottom view of the solder cutter;
Fig. 6 is a modification of the same.
A represents a main frame supposed in this case to support the mechanism of
a can-machine. D is a hollow horn or mandrel which is a support for tubular
open ended can-bodies at B, B₁ with their side seams horizontal. These bodies
are moved intermittently or step by step along the horn by carriers E, which
derive a reciprocating movement from the side-bar C, connected to a driving-shaft
(not shown) and which reciprocates parallel with the horn. On a standard A¹
of the main frame is a reel A2 for solder-wire. The solder-wire is fed down
through a guide 1, and between two grooved feed-rolls 2 and 3, which are placed
so closely together as to partially flatten the solder-wire to cause it to melt
quickly. The shafts 4 and 5 of these rolls carry the intermeshing gears 6 and 7,
The ratchet and gears are
while the shaft 4 also carries a ratchet-wheel 8.
operated by a lever 9 and pawl 10, the lever carrying the pawl, and being loose
on the same shaft 4. The free end of the lever has a slot and pin connection at 11,
with the side-bar C. After passing between the rolls the solder-wire extends
through a guide-hole 12, in a die-plate 13, in connection with which operates
the solder-cutter 14. This knife is pivoted on the lower surface of the die (Fig. 5)*
and is operated by the side-bar C, in its forward stroke (arrow in Fig. 1) through
the agency of a projection 15, on the lever 9. A stop 16 limits the movement
of the cutter, and a spring 17 restores it to normal position, at the rear stroke of

page_text: the side-bar. The cutter shears or severs the wire at the lower surface of the die,
and the severad pieces falls. Beneath the solder-cutter the horn is slotted as shown
at 18, the slot having downwardly converging walls (Fig. 3) in order to guide
the severed piece to the soldering-bar F, which is situated directly beneath the
slot 18. This bar has an upper concave surface to approximately fit the surface
of the can, and is held loosely in standards 20, 21, so as to be movable up and
down, in which movement it is guided by transverse pins 23. This bar is for
applying solder to the outside of the side-seam by contact therewith. A second
stationary bar H sweats the solder into the seam, there being no excess of solder
as where a tank is used, but only enough supplied for a single seam. The concave
bar forms a reservoir for the single piece of solder melted instantaneously by the
heated iron and taken up by the can in surface contact. The forward end of the
soldering-iron F is raised into contact with the can-seam at the forward stroke
of the side-bar C. For this purpose the side-bar is provided with an offset 24.
A rock-shaft 25 is journaled transversely in the main frame, beneath the horn,
which carries a cam 26. A lug 27, fixed to the shaft (Fig. 3) carries an adjust-
able screw support 28, upon which rests a stud 29, secured to the bar F. This stud
is placed somewhat nearer the end of the bar which receives the solder, than its
other end (Fig. 2).
At the commencement of the forward stroke of the side-bar the end of cam 26
is resting against the normal edge of the side-bar in advance of offset 24. It is
held there by the weight of the soldering-iron F, whose forward end has dropped.
slightly from the horizontal. The movement of iron F, is the same as if it were
pivoted in standard 21, which it might actually be, as a matter of fact. At the
end of the preceding forward stroke a piece of solder was cut and dropped near
the forward end of the iron F, which solder during the back stroke was melted
and now lies in a little puddle on the edge of the iron. During the said preceding
stroke, the can-body B, was brought over the iron F, came to rest near its rear.
end, and remained at rest through the back stroke. During the first part of the
present forward stroke, this can-body could take no solder on account of the
depression of the forward end of iron F, and hence could scoop no solder into its
inside. When the forward end of the can-body has passed the pool of solder
the offset 24 strikes cam 26, the connections 27, 28 lift the forward end of iron F
into contact with the moving can B, which rubs along its surface, taking up the
solder, such can being in the position of Figs. 1 and 2. By the same forward
stroke, cam B is carried over and in contact with the stationary iron H, which
sweats the solder thoroughly into the seam. This iron H is stationary in action,
but is adjustable for varying thicknesses of sheet metal by means of adjusting
screws 30. It is held in the standards 20, 22, and guided in adjustment by pins 31.
When the can B has passed over the passage 18, the next piece of solder is cut
and falls upon the iron. The working faces of the irons which are shown as
concave for round cans may be flat when soldering square cans, the intention being
to have them conform to the shape of the cans.
On the back stroke of the side-bar (contrary to the arrows) the can remains
stationary, the offset 24 releases the cam 26, and the weight of the iron F restores
the said cam to position against the normal edge of the side-bar, and the solder-
wire is fed between the rolls and flattened, but not cut.
Both soldering irons are heated by outside gas pipes 1, 1, which are shown as
supported by the brackets 20, 21 and 22. One of these gas pipes extends along
each side of the two irons, and parallel with them, and both pipes are provided
with burner orifices in the sides next the irons. J represents the gas supply
pipe which furnishes gas to both pipes 1, 1.
By this construction the seam is thoroughly soldered, and all objections arising
from inside soldering are avoided.
In Fig. 6 is shown a slight modification, which consists in omitting the
spring 17, and operating the solder-cutter positively in both directions by two
lugs 15, on the lever 9,

page_text: .
My soldering attachment can be used with other types of can-machines or as a
separate apparatus.
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:
(1) The combination with can body supporting means and with means for
propelling such bodies along with their side-seams horizontal, of a soldering iron
below said supporting means, means for heating said iron, means for delivering
solder to the upper edge of said iron, and means for moving the said iron bodily
into contact with the can body.
(2) The combination with a support for can bodies and with means for moving
said bodies with their side seams horizontal, of a soldering bar beneath said
support, a solder supplying device above said support and a passage for delivering
solder from the supplying device to the edge of the soldering iron.
(3) The combination with can-body supporting means of a vertically movable
soldering iron below said supporting means, means for delivering solder to its
edge, means for lifting said iron bodily into contact with the can-body, and means
for propelling said can bodies along with their side seams horizontal.
(4) The combination with a horn or mandrel forming a support for can-bodies.
and provided with upper and lower slots in line, of a soldering-bar beneath and
in line with said slots and a solder delivering device above. and in line with said
slots.
(5) The combination with a hollow horn or mandrel forming a support for can-
bodies, and provided with upper and lower slots, in line, of downwardly con-
verging interior walls forming in connection with said slots, a guide passage,
a soldering-bar beneath and in line with said passage, and a solder delivering
device above and in line with said passage.
(6) The combination with can body supporting means, of a soldering iron below
said supporting means, means for delivering solder to the upper edge of said iron,
means for moving said iron into contact with the can body, a stationary iron
beyond and in line with said movable iron, means for heating both irons, and
means for moving the can body with its side seam horizontal along and in contact
with both irons.
(7) An outside soldering device for the side seams of sheet metal ware, com-
prising, a straight-edged soldering bar, movably supported, means for giving a
pivotal movement to said bar, so as to raise one end of its edge into contact with
the side seam, means for supplying solder to said edge and means for heating said
iron.
(8) An outside soldering device for the side seams of sheet metal ware, com-
prising, a soldering iron having its edge shaped to correspond with the surface of
the can body, and supported so as to be movable upwardly toward the side-seam
and downwardly from the side seam, means for so moving it, a second and
stationary soldering iron adjustably supported in line with the movable iron,
means for delivering solder to the upper edge of the movable iron and means for
heating both irons."
.
(9) In a soldering-machine a horn or mandrel forming a support for can-
bodies, and having a vertical guide-passage, in combination with a solder-feeding
device and a solder-cutting device above said horn, and a soldering-iron below said
horn, whereby the solder is cut and falls directly through said passage upon said
iron.
(10) In a soldering-machine the combination with a horn or mandrel, and
means for propelling can-bodies along the same, of a soldering-iron movable toward
and from said horn, a reciprocating side-bar and connections from said side-bar
to the said iron for giving it the movement referred to.
(11) In a soldering-machine the combination with a horizontal horn or mandrel,
of a soldering-har beneath the horn having one end normally depressed relatively

page_text: to the horn, means for propelling can-bodies along the horn, means for lifting
the depressed end of the soldering-iron into contact with the can-body, means
for delivering solder to the edge of said iron, and means for heating the iron.
(12) In a soldering-machine the combination with a horn and with a recipro-
cating side-bar having an offset, of a rock-shaft carrying a cam adapted to be
operated by said offset, a movable soldering-iron and a support on said rock-shaft
for said movable iron.
EDWARD EVANS & Co.,
Lonsdale Chambers, 27, Chancery Lane, London, W.C.,
Chartered Patent Agents.
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