Improvements in Machines for Sealing Metal Cans for Preserving Food.
Year: 1895

page_text: Date of Application, 6th Nov., 1895-Accepted, 22nd Feb., 1896
COMPLETE SPECIFICATION.
Improvements in Machines for Sealing Metal Cans for
Preserving Food.
We, EMIL KUTZNER, and AUGUST URBAN, both of Rücker Strasse 6, Berlin,
Germany, 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 machine for the airtight closing of preserve
cans of all kinds. It possesses the great advantage over the machines hitherto in
general use that the preserve cans to be closed are no longer as heretofore turned
round with the pressing plate whereby a quantity of the contents of the can is
frequently damaged, but remains stationary in a firmly set position consequently
loss of the contents of the can is entirely avoided. A no less advantage of the
present invention is afforded by the peculiar construction of the machine which is
such that ordinary workmen can use the machine with ease, thus avoiding the
necessity of employing experienced workmen as is the case with machines of this
class as heretofore made and used.
The invention is represented in the accompanying drawings.
Fig. 1 is a partly sectional elevation ;
Fig. 2 is an enlarged part section taken on the line x, x, of Fig, 1;
Fig. 3 is a horizontal section taken on the line - of Fig. 2; and
Figs. 4 to 6 shew detached views of details.
The same letters of reference where they occur are used to denote the same or
corresponding parts in all the figures.
On the axle C is the pipe or hollow shaft A to which the step pulleys A¹ are
secured (see Fig. 6) whereby motion is imparted to the machine. On the pipe or
hollow shaft A is a cog wheel B which gears with the cog wheel B¹ on the parallel
shaft B to which is secured a cog wheel B1 which gears with the cog wheel E
fast on the axle C. On the end of the axle C is a bevel wheel D in gear with
another bevel wheel D' which is fitted by means of feather in a groove a on the
exterior of the pipe or hollow shaft 6 so that the latter can be moved longi-
tudinally on the vertical rod r without moving the bevel wheel D¹ out of gear
with the bevel wheel D. This movement is effected by means of a ring c¹
furnished with a lever handle c" and having a cam groove c which fits on a più or
peg d secured to the vertical rod r. By rotating the ring to the left of the
position shewn in Fig. 1, it is, by reason of the cam groove and pin, pressed down
fast on the upper end of the hollow shaft b which is thereby forced down over the
rod r.
To the lower end of the hollow. shaft bis secured a plate e having slits or
apertures e in which are carried the sliding blocks f, f¹ to which the working
rollers H, Hare revolvably mounted. Thus the rollers H", H are capable
of a two-fold movement, namely rotation on their axes, and a vertical displacement
by the movement of the hollow shaft b.
The sliding blocks f, f¹ are provided with conical ways which engage on a
corresponding conical guiding rim i forming a circular or oval track and having a
base plate or table ". " and fare friction rollers carried by the blocks fand f¹
respectively.
The vertical displacement of the table is effected by means of a vertical
rack kecured to its side with which gears a pinion k rotating in suitable bearing
and actuated by means of a hand lever . (See Fig. 1.)

page_text: The can to be sealed is stood upon the press plate m which likewise is capable
of vertical displacement by means of the screw spindle m¹ and the two lever
nuts n, n¹.
U
The bringing of the press plate m into the working position is effected by
means of the hand lever o, the pinion o to which it is connected, the cog wheels o"
and o' and the rack K. For the purpose of holding the can in fixed position
the vertical rod r, to the lower end of which is secured the press cover plate is
q,
furnished at its upper end with a peg or pin d' which engages in a lateral slot in a
collar v.
This collar is provided with three vertical apertures in line, through
the central one of which passes the rod r, and through the other two pass pillars v¹
screwed at their upper ends and furnished with adjusting nuts, their lower ends
being firmly secured to the fixed arm W of the machine. The collar is also
provided with lateral set screws and by means of these and the adjusting nuts
aforementioned the collar v is fixed in any desired position on the pillars and,
as the rod is held in the collar v by the pin d', it follows that an adjustment of
the collar o adjusts the position of the rod r. A method of adjusting the rod r
relatively to the collar is afforded by the nuts which screws over the end of the
rod and bears on the top of the collar v.
T
u is a collar fast on the hollow shaft b on the under side of which bear the
springs whose lower ends are fixed to the plate W' which forms part of the fixed
arm W of the machine. The springs t therefore tend to raise the hollow shaft b
and it is against the power of these springs t that the ring c¹ operates to bring the
hollow shaft b down over the rod r in the manner hereinbefore described. Figs. 4
& 5 shew detached views of the roller H with the can lin position for the bordering
and soldering processes respectively.
The working of the machine is as follows;-After the can with its lid lying
on it has been placed on the press plate m the hand lever o is actuated so that the
can is fixed fast between the press plate m and cover q. The table ¹ together
with the conical guiding rim is then forced up by means of the hand lever k",
and the sliding blocks f,f, which are now rotating through the setting in motion
of the machine, are drawn by surrounding conical rim i towards the centre and the
edge of the can cover to be bordered upon by the surfaces g of the rollers H
and H. This is the position shewn in Fig. 4. The rollers H¹¹ and H are now
brought back to their starting position and the cam grooved ring c¹ is turned to
the left of the position shewn in Fig. 1, whereby the hollow shaft bis depressed
and the surfaces h and h¹ of the rollers H and Hare brought into the same
horizontal plane as the edges of the tin to be closed completely airtight. (See
Fig. 5.) The machine is again set in action by the raising of the table i¹ and on
completion of the process can again be operated as before described.
Having now particularly described and ascertained the nature of our said
invention, and in what manner the same is to be performed, we declare that what
we claim is;—
(1.) A machine for sealing metal cans for preserving food distinguished by the
guide plate e fitted to the lower end of the hollow shaft 6 and provided with slits
or apertures e in which are carried two sliding blocks f, f¹ having two working
rollers H, H revolvably mounted thereon and furnished with grooves g & h, h',
conical ways engaging a conical guiding rim i forming a track, all arranged to operate
substantially in the manner described and illustrated in the accompanying drawings
and for the purposes stated.
(2.) In a machine for sealing metal cans for preserving food, of the kind
indicated in the preceding claim, the combination of the ring d loose on the rod r
and having a cam groove c engaging a pin d on said rod for the purpose of
lowering the hollow shaft 6 thereon, and the springs t for raising said shaft,
arranged to operate substantially in the manner and for the purpose hereinbefore
described and illustrated in the accompanying drawings.
(3.) In a machine for sealing metal cans for preserving food of the kind

page_text: indicated in Claim 1 hereof, the combination of the rack on the table ¹, the
pinion k, and hand lever 1, together with the rack K and the gear wheels o¹, oll
and o and hand lever o, arranged to operate substantially in the manner and
for the purposes herein before described and illustrated in the accompanying
drawings.
Dated this 6th day of November 1905.
F. W. GOLBY,
36, Chancery Lane, London, W.C., Patent Agent for the Applicants.