Year: 1899

page_text: Date of Application, 28th Nov., 1899-Accepted, 20th Jan., 1900
The letter a, represents the frame of the machine and b, is the rotatable plat-
form on which the can body to be headed is supported. Above this platform is
arranged a chuck e, adapted to bear upon the can head and to rapidly rotate
body and head simultaneously while they are subjected to the action of the seam-
ing rollers.
Rotary motion is imparted to shaft c¹, of chuck c, from pulley d', of power
shaft d, by belt e, running over idlers el, and over pulley c², of shaft c. The
power shaft d, also drives by belt f, running over idler fi, a pulley g', loose on
shaft g. This shaft is provided with a worm g², that engages a worm wheel h¹,
fast on shaft h, and is adapted to intermittently drive said shaft in manner herein-
after specified. The shaft h, carries two cams i, j, that are adapted to project
the seaming rollers towards the work in the following manner:
The first cami, (Fig. 5) is engaged by a roller, of a lever 2, to the forward
end of which is pivoted an upwardly projecting wedge. This wedge when
rising bears against the roller, of a slide k, in the forked forward end of which
the first seaming roller /, is pivoted. Thus the roller 7, engages the flanges A¹, B¹,
of the can body A, and cover B, and its profile is so formed that it will bend
them into a double lap seam (Fig. 6). When the cam i, allows lever 2, and
wedge, to drop, the slide k, will be drawn back by spring ². In order to per-
mit a delicate adjustment of the roller 7, with relation to the work, form back
of wedge, an adjustable abutment, consisting of a pivoted bar, carrying anti-
friction roller, and adapted to be fixed at different inclinations by set screw 26.
The cam (Fig. 7) actuates the second scaming roller m, in a similar manner,
by roller j, lever 12, wedge, roller n¹, and slide n, in the forward end of which

page_text: the roller m, is pivoted. The profile of this roller is such that it will flatten
or compress the seam doubled by roller 1, (Fig. 8) so as to form a flat air-tight
joint. The abutment of wedge 3, is formed by the pivoted bar j, carrying
roller, and bearing against an elastic cushion or spring 1, the bar jt, being
adjustable by bolt and nut je.
This elastic abutment permits the roller m, to hug the contour of the can
body at the side seam, and closely compress the lap joint over such seam, so
that imperfections in the joint and jamming are avoided.
The cam i, is keyed to the shaft h, while the cam j, is adjustably attached to
cam i, by means of set screws 8, engaging elongated slots 28, of cam i. Thus
the relative position of the cams can be readily adjusted, to adjust the movement
of the seaming rollers in their relation to one another.
In order to permit the slides to be set to can bodies of different diameters,
the shaft h, as well as the abutments and slides are supported by a carriage a¹,
movable upon the bracket a², of frame a, and held in position by set screw a³,
(Fig. 3).
The support 6, of can A, is provided with a spindle b¹, stepped into the upper
end of a sliding bar o, embraced by sleeve a³, of frame a. The bar o, is sur-
rounded by a sliding collar o¹, (Fig. 5), that constitutes the support for a pair of
springs o², over which is arranged a collar o³, adapted to be adjustably clamped
to bar o, by set screw of. After the can has been placed upon the platform b,
the latter is raised, so that the can head is pressed tightly against chuck c. The
raising of the platform is effected by means of a forked lever p, pivoted to
sleeve a, at p¹, and engaging with its eccentric end p, a pair of rollers ot, of
collar o. The lever p, may, if desired, be connected by chain 2, to a treadle p³.
When the lever p, is swung down, the eccentric p, by bearing against rollers o*,
will lift rod o, through collar o¹, springs o2, and collar 03, and will thus press
the can head against the chuck c. The springs o, will form a yielding bed, to
compensate for slight differences in the height of the can bodies.
The connection between the can support and the worm shaft g, is such that when
the can support is raised, the shaft will be once rotated, to rotate cam shaft h,
and project the seaming rollers 1, m, successively against the work. After the
cam shaft has made a complete rotation, and the slides have been drawn back
by the springs, n², the worm shaft is arrested, to arrest the seaming rollers
in their rearmost position, and the can support is lowered, ready to receive a
fresh can body.
The construction for effecting these results is as follows:-
The lever p, is provided with an arm p, connected by rod g, to lever ', carry-
ing roller q, that is engaged by a third cam r, fast on shaft h. To lever g¹, is
secured one end of a spring s, containing a core rod s, and secured at its other
end to a lever t, actuating clutch, by means of which the loose pulley g', can
be coupled to its shaft g.
When the lever p, is depressed to raise the can support, the lever g', will be so
vibrated, that the draw on spring s, will shift lever t, to couple pulley g', to
shaft g, and thus advance the rollers 7, m, successively against the work.
Mean-
while the roller ², will engage cam r, and when the shaft h, has made a com-
plete turn, the roller will be forced into the receding section of the cam surface
by a spring, secured to lever p. This will cause lever g¹, to be so vibrated,
that the core rod s¹, will push against the clutch lever t, to shift clutch t¹, release
pulley g', from shaft g, and arrest shafts 9, h.
The operation is as follows:
The flanged can body A, with the head B, superposed, is placed upon the plat-
form b, and the latter is raised so that the head is pressed firmly against clutch c,
by means of which head, body and platform are rapidly rotated. The raising
of platform b, has coupled the shaft g, to the power, and thus cams i, j, are
rotated to raise the wedges 3, 3, and advance the rollers l, m, successively against
the work, so as to first fold and then compress the seam. After the shaft h,

page_text: has made a complete turn, the engagement of concave part of cam r, with roller q³,
will cause the clutch ¹, to be shifted so as to uncouple pulley g¹, and arrest
shafts g, h. At the same time, the lever p, will be so vibrated, as to lower its
end, and permit the platform-support to drop, and disengage the can head
from the clutch c. The can which is now finished is removed and replaced by
a new one, when the operation is repeated. The machine works with great
accuracy and smoothness, is easily tended, and produces a very large output.
Having now particularly described and ascertained the nature of the said in-
vention as communicated to me by my foreign correspondent, and in what
manner the same is to be performed, I declare that what I claim is:-
-
1. In a can heading machine, a seaming roller, a slide carrying the same,
a cam, and a wedge adapted to be actuated by the cam and engage the slide,
substantially as specified."
2. In a can heading machine, a seaming roller, a slide carrying the same, a
lever, a cam engaging the same, and a wedge pivoted to the lever and adapted
to engage the slide, substantially as specified.
3. In a can heading machine, a seaming roller, a slide carrying the same,
means for actuating said slide, and a yielding buffer, engaging the slide-actuating
means, substantially as specified.
4. In a can heading machine, a seaming roller, a slide carrying the same, a
wedge adapted to engage the slide, a cam for actuating the wedge, and a yield-
ing buffer engaging the wedge, substantially as specified.
5. In a can heading machine, a pair of seaming rollers, a pair of slides carry-
ing the same, a pair of cams, a pair of levers successively operated by the cams,
and wedges pivoted to the levers and adapted to engage the slides, substantially
as specified.
6. In a can heading machine, a roller adapted to fold the seam, a roller adapted
to compress the seam, a pair of cams, and wedges actuated by said cams and
adapted to successively advance said rollers, substantially as specified.
7. In a can heading machine, a rotatable platform, a movable bearing for sup-
porting said platform, a pair of seaming rollers, and means for advancing said
rollers against the work by the raising of the bearing, substantially as specified.
8. In a can heading machine, a rotatable platform, a movable bearing for sup-
porting the platform, a pair of seaming rollers, means for advancing said rollers
against the work by the raising of the bearing, and means for automatically
lowering the bearing, substantially as specified.
9. In a can heading machine, a rotatable platform, a movable bearing for sup-
porting the same, a worm shaft, a loose pulley mounted thereon, a clutch operated
by the bearing and adapted to couple the pulley to its shaft, a cam shaft inter-
geared with the worm shaft, slides actuated by the cam shaft, and seaming rollers
carried by the slides, substantially as specified.
10. In a can heading machine, the combination of the following elements:
a driving shaft, a worm shaft, a cam shaft intergeared therewith, a pair of cams
mounted on the cam shaft, slides actuated by the cams, seaming rollers carried
by the slides, a rotatable platform, an adjustable platform-support, means actu-
ated by the platform-support for coupling the driving shaft to the worm shaft,
and means for automatically lowering the platform-support, substantially as
specified.
11. A can heading machine, substantially as herein shown and described.
To
1
.
1000
ALLISON BROS.,
Agents for the Applicant.