Can Making Machines.
Year: 1894

page_text: Date of Application, 11th Aug., 1894-Accepted, 29th Sept.. 1894
Can Making Machines.
We, AXEL JOHNSON and HENRY CLAY BLACK, residing in Oakland, County
of Alameda, State of California, 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 :-
The present invention relates to a new and useful can making machine, which
consists in the arrangement of parts and details of construction, as will be herein-
after more fully set forth in the drawings, described and pointed out in the
Specification.
Under the present system of can making, two distinct operations are required to
complete the can, the first being the formation of the can body upon a horn,
mandrel, or similar device, and the second applying the heads to the formed or
completed can body. It is usual to provide independent machines to accomplish
these steps, that is, a seaming machine and a heading machine, although machines
have been devised whereby both operations may be successfully carried out in one
machine. However, two operations are now required to form and head the can,
whether two machines or only one machine be employed for the purpose.
The object of our invention is to provide a machine which will form the can
body and secure the heads or ends thereto in one operation, thus dispensing with
the necessity of the ordinary seamer machine and at the same time provide a
machine which will be no more expensive in its construction and operation than
the ordinary automatic heading machine, thus producing in one machine a combined
forming and heading machine."
In order to more fully understand our invention, reference must be had to the
accompanying sheets of drawings, which form a part of this Application, wherein―
Figure 1, is a front elevation of the machine, showing the relative position of
the parts after the heads have been placed upon the can body blank, held within
the jaw, prior to the closing of the jaw around the heads;
Figure 2, is a rear elevation of Figure 1, with the can head feed chutes
removed;
"
Figure 3, is an enlarged detail front elevation of the jaw when open, showing
the body blank therein, the end of the mandrel for closing the side seam of the
can body, and of the rod for raising the mandrel, after it has moved within the can
body, in order to cause the same to bear tightly upon the side seam and insure the
closing thereof;
Figure 4, is a top plan of Figure 1, with can head feed removed, showing the
upper clamping jaw open and body blank and heads removed therefrom;
Figure 5, an enlarged detail rear elevation of the clamping jaw and can head
feed chute, showing the body blank held within the jaw and position of heads after
being discharged from the feed chutes;
Figure 6, a view similar to Figure 5, showing position of feed chute guide after
the clamping jaw is closed;
Figure 7, is an end elevation of Figure 6 ;
Figure 8, is a front end elevation of Figure 4, showing the mandrel in its outward
position and clamping jaw removed from between the carrier disks, the disks being
partly in section;
Figure 9, is a similar view with the clamping jaw between the disks, the same
being closed around the can body and heads, the mandrel shown inside the can
body and raised:

page_text: Figure 10, is a detail and elevation of the mandrel and casing;
Figure 11, is an end view of the can body blank;
Figure 12, is a cross section of the can head;
Figure 13, is a longitudinal section of a portion of the can body;
Figure 14, a front view of the finished can, partly in section ;
Figure 15, a vertical sectional view of the crimper rolls, showing a can body
blank passing therethrough; and
Figure 16, is a front elevation of the crimping rolls.
The letter A is used to indicate the frame of the machine, within which the
carrier wheel works, said wheel being composed of two disks A', A², which disks
are loosely mounted upon stationary shaft B. This shaft runs cross-wise of the
frame, consequently the carrier wheel revolves in a plane parallel with the side
pieces thereof. The disks which compose the carrier wheel are located a distance
apart equal to the width of the clamping jaws, so as to enable the latter to be
held there between, which work between the inner shoulders, a, of the disks.
These disks are cast with the hubs a', which separate the two and hold them
apart.
The clamping jaws are composed of two sections B', B', hinged together by
the rod b', which passes through the knuckle b, of each section. Upon this
rod the sections swing in order to open or close the clamping jaw. This rod
passes through the disks forming the carrier wheel and tends to hold the disks
rigid.
In the present instance we have shown the carrier wheel as being provided
with five clamping jaws, but this is immaterial as any suitable number may be
employed.
These jaw sections are connected by means of the strap or plates C, C¹, one
end of each being fastened to its respective jaw section by pin c, as shown,
while the other or free end is loosely secured upon short axle or shaft C, the
outer end of which shaft is provided with a roll, c. This shaft projects through
the vertical opening or slot c², cut in disk A', consequently the roll c¹, is beyond
the outer face of said disks.
By means of the hereinafter described mechanism the shaft C2, is raised and
lowered within the vertical slot in order to close and open the clamping jaw, the
sections of which are brought together or forced apart by the inward or outward
movement of the connecting straps C, C', owing as to whether the shaft C³, is
raised or lowered.
In front of the disk A', is secured the sector cam D, which is also loosely
mounted upon the shaft B. The face of this cam is cut eccentrically, as shown
at d, hence we shall hereafter refer to the same as an eccentric sector cam. From
this cam projects the arm D', which is connected to the eccentric D², by pitman D³,
the forward end of said pitman being fastened to the arm by wrist-pin d'. The
eccentric D2, is rigidly affixed to the drive shaft D4, said shaft being supported by
a bracket projecting from the frame A, see Figures 1 and 4. This shaft is
operated by belt wheel D, secured thereon, which is rotated by a pulley belt, not
shown.
The top of arm D¹, is bent at a right angle, and through the bent portion thereof
works the spring actuated catch E. the lower end of which fits within one of the
notches e, cut in the periphery of disk A³.
It will be noticed that the end of spring actuated catch is cut upon an incline,
while the forward portion of the notches e, is likewise cut away. This is for the
purpose of permitting the catch to move from engagement with the notched portion
of the carrier wheel upon the forward stroke of the sector cam. As the eccentric
is thrown forward, the sector cam is likewise moved, through its connection
therewith, until its full stroke is made, when the spring catch will engage with
the next notch cut in the disk A', of the carrier wheel.
Upon the rear throw of the eccentric the sector cam is not only carried thereby,
but the carrier wheel likewise, owing to the catch being in locked engagement

page_text: therewith. Thus it will be noticed that the movement of the carrier wheel is
intermittent and not continuous.
As the outer cam is thrown forward the lower portion of the inclined face thereof
is brought beneath the face of roll c', and as the face of this cam is eccentrically
cut, it is obvious that as the cam continues its forward movement the roll travels
upon the inclined face and gradually raises the shaft C2, until the roll is placed
in line with the top of the eccentric cam E', which is secured in front of the
disk A', upon shaft B. This upward lift of shaft C2, brings the straps C, C₁,
towards each other, and causes the jaw sections to close. As the carrier wheel is
advanced one step, by the rear throw of the eccentric, the roll C', rides upon the
eccentric cam E. It will be noticed that the roll bears upon this cam and the jaw
remains closed until the point 1 is reached, when the same rides upon the fixed
trackway or rib E2, which runs from this point to point 2, of the disk A'.
The trackway E², runs downwardly, cam E', inwardly until the point 3 is
When the roll
reached, when each run in the true arc of a circle thereafter.
begins to ride upon the track E, the axle C2, is forced downward within the
vertical shaft 2, which forces the connecting straps of the jaw sections apart and
opens the clamping jaw for the discharge of the can into the chute E³.
From the point 3, the track E2, forms a guard for preventing the closing of the
clamping jaw until the same has been carried beyond the upper end thereof.
The feed chute which conveys the body blank to the machine is represented by
the letter F. This chute is arranged at an angle of about forty-five degrees, and
the lower end thereof terminates in a movable platform F', which works in guides f
From the sides of this platform project the pin f1, which is embraced by the forward
arms of the bifurcated lever F2. This lever is fulcrumed between the arms of
brackets F³, and by means of the suspended weight 2, the forward end thereof is
held downward. When the carrier wheel has been rotated so as to bring an
empty jaw immediately above the end of the feed chute, the same will be open its
full distance.
The sector cam will then be in such position as to make a forward throw in
order to rotate the carrier wheel one step, and as the same is thrown forward to
engage with the carrier wheel, the downwardly extending arm F, of the sector
cain is thrown to the rear, and lower end thereof engages with the upwardly
projecting shoulder, of the fulcrumed lever and necessarily forces the same
downward, which throws the forward end upward and thus raises the movable
platform of the feed chute and places a body blank within the open clamping jaw.
In view of the fact that it is necessary for the can body blank to be placed in its
seat and the platform lowered so as to be free of the jaw before the carrier wheel
has motion imparted thereto, we shorten the lift of the fulcrumed lever, con-
sequently the end of the arm F4, will free itself from engagement with shoulder f³,
and pass therebeyond. The moment the arm moves from engagement with the
shoulder f³, the weighted fulcrumed lever descends, carrying the movable platform
of the feed chute therewith. So as to enable the end of arm F, to clear
shoulders, as the arm is moved forward, we connect this portion to the arm proper
by a spring actuated hinge f³.
Owing to the peculiar shape given to the body blank as hereinafter more fully
set forth, the same will remain within the open jaw by the spring of the metal
itself.
At the top of the carrier wheel we locate the can head feed chutes G, G', being
of the usual construction, through which the heads or ends drop or fall by gravity.
From these chutes, near the lower end, projects the bracket g, to which we fulcrum
the spring actuated dogs g', the teeth 93, of which project through openings cut
in the wall of the chutes. These teeth are such a distance apart as to hold one
head therebetween, therefore when the lower teeth are withdrawn to permit the
falling of the heads, the upper ones enter the chutes and prevent the dropping of
heads until the lower teeth re-enter the runway of the chutes, thus only a pair of
heads can drop at the same time.

page_text: To the lower end of the chutes there is located a vertically movable guide G².
This guide receives the heads from the runway of the chutes and deposits the
same upon the body blank held within the open jaw and holds the same in place
while the jaw in closing forms the body therearound.
The end of this guide is wedge-shaped, and consequently as it descends the body
blank is forced open its full distance. This guide does not suddenly raise from
within the jaw, for if so the heads would likely be displaced by the jar, but is
gradually removed as the jaw closes. The roll g³ secured to the lower end of the
guide bears upon the joint of the straps C, C, and as the straps are brought
together, in order to close the clamping jaw, by the vertical movement of the
shaft C2, the guide gradually lifted from within the jaw. This guide is formed
with openings which register with the can head openings of the chutes, consequently
the same may be said to form a continuation thereof.
From the guide projects the deflecting plate 9. This plate, as the guide moves
upward, forces the lower tooth of the fulcrumed dog within the feed chute, and
withdraws the upper one and thereby releases the can heads held by the upper
tooth.
In order to provide against the feed chute dropping between the carrier wheel,
when removed from within the jaw, which it would do when the carrier wheel is
being rotated one step in order to place another jaw beneath the can head feed
chute, we secure to the inner face of disk A¹, the flange G4, upon which flange
the roll, bears when the guide is raised from within the jaw.
This flange
supports the can head guide and holds same in position until the next open jaw is
brought around into position to receive the can head.
In Figure 5, we have shown the clamping jaw with the can body blank H, held
therein, the can head H', in position to permit the can body blank to be formed
therearound, and the guide for the can head holding the head in place in order to
prevent its tilting to one side, while in Figure 6 the clamping jaw is shown as
closed, the body being folded into proper shape around the can heads, and the can
head guide raised from within the clamping jaw and in line with the supporting
flange G.
To the rear face of the disk A2, is bolted or otherwise secured the mandrel
frame or casing H³, within the side h, of which is cut the bayonet slot, and in
the bottom plate is fitted and works the cross-head H³. Upon the cross-head
rest the mandrel rod I, which terminates at its inner end into an enlarged head or
mandrel, I. This mandrel is of such size as will readily enter the can body, formed
by the clamping jaw, through the filling orifice formed in one of the heads. This
mandrel passes through an opening 12, cut through the disk A² for this purpose.
The mandrel is moved in or out of the can body through the medium of the cross-
head H³, which is united to the mandrel rod I, by the pin 13, which extends through
an opening formed in said rod, which pin while serving to force the mandrel rod
in or out in accordance with the movement of the cross-head H³, does not prevent
said rod from having a vertical movement independent of the cross-head. When
the mandrel is withdrawn from the can body, it fits within the casing or frame and
completely fills the same, and when in this position no vertical movement can be
given the mandrel, but when the mandrel first enters the can body it is a considerable
distance from the seam thereof, and it then becomes necessary to impart a vertical
movement to the mandrel rod in order that the mandrel may be raised so as to bear
upon and close the side seam of the can body. This is accomplished by mechanism
which will be set forth later on in the Specification.
The lower end of the cross-head pin 13, has a roll i, secured thereto, which roll
works within the groove or runway i', formed within the circular plate I. This
plate we have shown in the drawings as extending only half way around the
shaft A, see Figure 8, but in practice we shall make it in the form of a circular
plate so as to keep the roll i, continually within the groove i'.
It will be observed that this groove runs inward at an incline for a given distance,
say to 4, thence in a line parallel with the disk A², to point 5, and from thence to

page_text: point 6, at an outwardly incline. Hence as the roll travels within the groove
towards point 4, the cross-head is moved inward, carrying therewith the mandrel
rod, the movement of which rod forces the mandrel within the can body.
As the roll works within the straight portion of the groove, the mandrel is raised
or lifted so as to bear tightly against the under face of the side seam of the can
body in order to close the seam.
During this portion of the travel of the carrier wheel the roll j, secured to one
of the jaw sections, bears firmly against the guard plate J, and causes the clamping
jaw to press firmly upon the mandrel, thus preventing the jaw from being forced
open by the outward pressure of the mandrel. After the carrier wheel has
travelled the length of the guard plate, the roll will have travelled from 4 to 5,
when it enters the outwardly inclined portion of the groove and gradually withdraws
the mandrel until point is reached, after which it travels in a true circle until
point of entrance to the inwardly inclined portion of the groove is reached. We
provide a mandrel for each jaw, although in the drawings only one is shown, but
only one grooved plate is provided, the roll of each cross-head travelling therein.
Of course each mandrel is carried around with the movement of the carrier
wheel, being affixed to the disk A². The plate I' is a rotating one, the hub [*
thereof being rigidly affixed to the shaft B.
From the mandrel rod projects two pins or studs, j, j³, the former of which
works within the bayonet slot ². These pins or studs are embraced by the
arms k, k, which project outward from the lift rod K. This rod is fulcrumed to
the disk A2, by pin k², and the upper end K' thereof is cast at an angle so as to
fit within the opening 12, and upon the same rests the mandrel. The lower end
portion of the lift rod is bent outwardly, as shown at k³. From this portion of
the lift rod extends the small bracket rod A, which is connected to the disk A², by
spring ko.
This spring exerts a constant upward pressure upon the lower portion of the rod,
which maintains the upper end downward. The lower portion of the lift rod
is bent outwardly so as to be in line with the roll 1, projecting from fixed arm L.
This arm, like plate I, is a fixed or non-rotating one, being rigidly secured to
the shaft B, as shown.
For each jaw or mandrel there is a lift rod and these rotate with the carrier
wheel. The mandrel is raised after being inserted within the can body, by the
roll, of arm L, bearing upon the outwardly bent or curved portion of the lift
rod, which forces the lower portion of said rod downward so as to raise the upper
end in order to lift the mandrel. After the roll has moved from off the
portion of the lift rod, the same is raised by the action of the spring ks, which
causes the upper end to move downward, thus lowering the mandrel. By this
time, however, the clamping jaw will have travelled the full distance of the guard
plate and the mandrel be on its outward movement. As the lift rod is raised the
arms k, are moved therewith and carry the mandrel rod likewise. These arms
impart an even lift to the mandrel rod and mandrel.
From the plate 14 projects the flanged bracket L, under the flange of which the
roll, secured to end of the mandre! rod, travels when the mandrel is held raised
within the can body. This is for the purpose of supporting the mandrel rod, and
holding same in line with the mandrel, so as to prevent the tilting or wobbling of
the same, which, if permitted, would cause the formation of a loose and an improper
seam to the can.
The can body blank H, before entering the feed chute, is passed between the
crimper rolls M, M', the roll M being provided with the circular flange or beads m,
near the ends thereof, while the roll M', has the circular grooves m³ cut therein,
into which the projecting flange m fits, cousequently as the sheet of metal is fed
through the rolls, grooves m² are formed along the sides thereof, which gives an
outwardly projecting bead to the sheet. By means of the guide roll M2, the blank
sheet of metal curves upwardly as it comes from the crimper rolls. Roll M has a
longitudinal groove n, cut therein, into which fits the longitudinal tube n

page_text: of roll M. As the end of the body blank enters the rolls, tooth n¹ forces
the metal into longitudinal groove n, and thus forms an outwardly flared hook n².
"
The crimper rolls are of such diameter that with one revolution thereof the body
blank is passed therethrough. As the body blank is about to leave the rolls
the opposite end thereof is engaged by the tooth n', and forced into groove n,
whereby an inwardly projecting hook n³, is formed, which interlocks with hooked
end n², when the blank is rounded up within the jaw. By thus stamping the body
blank we provide for the formation of what is known as a
"lock joint." Within
the grooves m², the heads H' are securely held when the body is formed.
The side grooves m² of the body blank form annular grooves when the body is
rounded and closed, which constitute the seat for the can beads and serve to hold
the heads firmly in place. When the can is formed, the body is rolled around the
heads, which rest within the annular grooves, see Figure 14. This manner of
securing the heads provides an exceedingly strong can. The grooves m² are made
of a width equal to the flange of the heads. By the sliding guide which works
upon the lower end of the can head feed chutes, the heads are accurately placed
within these grooves and held therein while the body is being formed there-
around.
The crimper and guide rolls are connected together by suitable gear mechanism,
and may, if so desired, be driven by means of a drive belt or sprocket chain, from
the drive shaft of the machine proper. The can body blanks, as delivered from
the crimper rolls, enter the body blank feed chute and are conveyed to the
machine.
Owing to the fact that we provide a lock joint for the can body, it is necessary
that a slight motion be allowed to our clamping jaw, after being closed, so
as to bear firmly upon the hooked ends which constitute the side seam, in order to
tightly close the joint. This we accomplish by forming the jaw section B² with
the hinged portion N³, which is held in place by the spring N'. To this hinged
portion is secured the bearing roll j. As the clamping jaw travels beneath the
guard plate J, the roll contacts therewith, and forces the hinged portion N³ of
the clamping jaw down upon the lock seam, directly under which the mandrel is
held, and thereby tightly closes the same.
After the can has been formed in our machine, it is conveyed to any suitable
machine for soldering.
While we have described the present machine for the making of round cans, it is
obvious that by simply changing the form of the clamping jaw, a square can may
be manufactured. Therefore we do not confine ourselves to the exact arrangement
of parts set forth, but wish to be understood as claiming broadly any style of
machine which automatically assembles can body blanks and heads, and secures
the head to the can by folding the can body therearound, whether it be a square or
round can.
We are aware that minor changes may be made in the arrangement of parts and
details of construction herein shown and described, without creating a departure
from the nature and scope of our invention.
While we have described our machine for closing a lock joint side seam, a lap
joint may be equally as well provided, but in such a case it would be necessary
to connect with the machine a solder feed and solder iron in order to unite the
lap joint.
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed, we declare that what we
claim is: :-
1. In a can making machine, the combination with the carrier wheel provided
with clamping jaws, of mechanism for placing body blanks within the jaws and
heads upon the blanks, and of devices for closing the jaws in order to fold the
blanks around the can heads and closing the side seam of the body.
2. A can making machine provided with devices for receiving can body blanks

page_text: and can heads, and with mechanism for folding the can body around the heads,
closing the side seam of the can and discharging the can from the machine.
3. In a machine for making cans having tight fitting inside heads, the
combination with a device for receiving the can body blank and can heads, and
folding the can body blank around the heads and holding the same therearound
until the side seam is secured, with mechanism for closing the side seam of the can,
thereby securing the can body outside of the heads.
4. In a machine for making cans having tight fitting inside heads, the
combination with a chute or devices for delivering the can body blanks to the
machine, a movable device for receiving the can body blanks, a chute or device for
placing the head within the can body blank, mechanism for closing the movable
device in order to fold the can body blank around the can heads and holding the
same therearound until the side seam is closed, and mechanism for closing the side
sean, thereby securing the can body outside the can heads.
5. In a can making machine the combination with the clamping jaws for receiving
can body blanks, a feed chute for supplying blanks to the clamping jaw, and a
device for conveying the blanks from the chute to the clamping jaws.
6. In a can making machine for automatically assembling can body blanks and
can beads and folding the blanks around the heads, whereby a can with tight
inside fitting heads is produced, the combination with the movable clamping jaw
for receiving the blanks and heads, devices for feeding the blanks and heads to the
jaw, mechanism for closing the clamping jaw in order to fold the body blank
around the heads and so holding the same until the side seam of the can is closed,
and of devices for closing the side seam of the can body while held around the
heads.
7. In a can making machine, the combination with the carrier wheel of the
movable clamping jaw, devices for opening and closing the clamping jaw, the
mandrel for closing the seam of the can formed by the clamping jaw, mechanism
for forcing the mandrel in or out of the jaw, liftrod for raising the mandrel so as
to bear against the under face of the seam of the can, and of a device for forcing
the jaw tightly upon the seam of the can.
8. In a can making machine, the combination with the clamping jaw, for
receiving can body blanks and heads, mechanism for closing the clamping jaw in
order to fold the body blank around the heads, a device for maintaining the jaw
closed until the side seam of the can is closed, a mandrel for entering the can body
in order to close the seam, mechanism for forcing the mandrel within the can body
and raising the same so as to bear against the under face of the side seam, device
for forcing the clamping jaw firmly upon the side seam, and of mechanism for
lowering the mandrel and withdrawing the same from within the can after the side
seam is closed.
9. In a can making machine, the combination with the clamping jaw, of the
mandrel adapted to enter the can body formed by the clamping jaw, of mechanism
for imparting a longitudinal movement to the mandrel, and of a device for forcing
the clamping jaw tightly against the side seam of the can body held within the
jaw in order to close the same.
10. The combination with the clamping jaw of a can making machine, of a
mandrel adapted to enter within the can body formed by the machine, and of
mechanism for imparting longitudinal and vertical movement to the mandrel,
whereby the mandrel is forced into the cau, raised to bear firmly against the under
face of the seam, lowered after the seam is closed and then removed from within
the can.
11. In a machine for forming cans by folding the body around the heads, the
combination with the clamping jaws, of mechanism for opening and closing the
jaws, of the mandrel for bearing against the under face of the side seam of the can,
mechanism for imparting a reciprocating and vertical movement to the mandrel,
and of a device for forcing the clamping jaw tightly against the upper face of the
side
seam, and causing it to close by pressure upon the mandrel.

page_text: 12. In a can making machine, the combination with the carrier wheel, the
clamping jaw composed of two sections swinging upon the same shaft, and of
mechanism for imparting an intermittent motion to the carrier wheel, said
mechanism comprising therewith a sector cam, which upon its forward thrust
serves to close the clamping jaw, and upon its rear movement carries the carrier
wheel therewith.
13. In a can making machine, the combination with the carrier wheel, of the
mandrel, mandrel rod, mechanism for moving the rod in or out in order to cause
the mandrel to enter the can held within the carrier wheel, or to be withdrawn
therefrom, and of a device for raising and lowering the mandrel.
14. In a can making machine, the combination with movable devices for receiving
can body blanks within the same, of mechanism for causing the closure of the
movable devices in order to fold the can body around the can heads, and of a
mandrel for bearing against the under face of the side seam of the can body, said
mandrel having a longitudinal and vertical movement.
15. In a can making machine, the combination with the carrier wheel, of
movable clamping jaw for receiving body blanks and beads, mechanism for closing
the clamping jaw whereby the body blank is folded around the can heads, and
devices for closing the side seam of the can.
16. In a can making machine, the combination of devices for receiving can body
blanks and heads, folding the body blanks around the heads, closing the side
seam thereof, and discharging the completed can from the machine.
17. In a can making machine, the combination with the movable clamping
jaw composed of two sections, one of said sections having the upper portions
thereof secured thereto by a spring hinge, mechanism for feeding can body blanks
and can heads to the clamping jaw when the sections are opened, the heads being
placed inside the body blanks, devices for closing the clamping jaw in order to fold
the body blank around the can heads, and device for closing the side seam of the
can, whereby the heads are tightly secured inside the can body.
18. In a can making machine, the combination with the can head feed chutes,
movable can head guide secured upon the lower ends of the chutes, said guide
having a vertical movement, devices for raising said guide as the clamping jaw of
the machine is closed, and of a device for maintaining the guide in its raised
position until the next clamping jaw coines thereunder.
19. In a can making machine, the combination with the can head feed chute, the
can head guide movably secured to the lower end thereof, and mechanism for
feeding can heads to the guide as the guide is raised and lowered.
20. In a can making machine, the combination with the can head feed chute,
the spring actuated dog secured thereto for regulating the feed of the can heads,
and movable guide, secured to the lower end of the can head feed chute, for
receiving the can heads from the can head feed chute and conveying same to the
clamping jaws of the can machine.
21. In a can making machine, the combination with the clamping jaw, of the
feed chute, a movable guide device for receiving the heads from the chute and
placing same within the jaw and holding same in place therein until the jaw is
closed, and devices for closing the jaw and raising the guide from the same.
22. In a can making machine, the combination with the carrier wheel, said wheel
composed of two disks, one of which is provided with a series of notches around
the periphery thereof, clamping jaws held between the disks, cam carrying spring
actuated catch for engaging the notched disk of the carrier wheel, mechanism for
reciprocating the cam in order to impart an intermittent motion to the carrier
wheel, and of devices for closing and opening the clamping jaws during the
rotation of the carrier wheel in order to form the can and discharge the same from
the machine.
23. In a can making machine, the combination with the carrier wheel, said
wheel composed of two disks, one of which has a series of vertical slots cut therein,
a clamping jaw secured between the disks, said jaws composed of hinged sections,

page_text: straps connecting the sections of the jaws, axle to which the free ends of the straps
are secured, said axle extending through the vertical slots in one of the disks of
the carrier wheel, a roll secured to the outer end thereof, a reciprocating cam for
raising said roll in order to close the clamping jaw, and of mechanism for operating
said cam.
24. In a can making machine, the combination with the can head feed chute,
of the crimper rolls, one of said rolls provided with a circular groove, and the
other with a circular flange which fits therein, and one provided with a longitudinal
lip, and the other with a longitudinal groove into which said lip fits, said circular
grooves, flanges, longitudinal lip and groove, forming side grooves and outwardly
and inwardly hooked ends to the body blank when passed therethrough.
25. In a can making machine, the combination with the carrier wheel, a mandrel,
mandrel casing secured to the carrier wheel, mandrel rod, mechanism for forcing
the mandrel rod in or out of the can, and devices for raising and lowering the
mandrel.
AXEL JOHNSON.
HENRY CLAY BLACK.
Cruikshank & Fairweather,
62, St. Vincent Street, Glasgow, Agents.