Improved Apparatus for the Manufacture of Tin or other Metal Canisters.
Year: 1891

page_text: COMPLETE SPECIFICATION.
Improved Apparatus for the Manufacture of Tin or other
Metal Canisters.
I ALBERT EDWARD BENTLEY of 24 Ogden Street Rooden Lane Manchester
in the County of Lancaster, Tin Plate Worker, 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 the construction of apparatus for the manufacture of air
and liquid tight metal canisters of a cylindrical form, the body and ends being
united with a doubled seamed joint without the use of solder.
The nature of my invention and the manner in which the same is to be performed
or carried into practical effect will be readily understood on reference to the two
sheets of drawings hereunto annexed and the following explanation thereof.
Fig. 1 on Sheet 1 of the drawings is an elevation and Fig. 2 a vertical section
of my improved apparatus for uniting the ends and cylindrical body of metal
canisters by double seaming, the three necessary operations vizt. (1) "throwing
off" or flanging the edge of the body, (2) "paning down" the edge of the circular
end over such flange, and (3) "double seaming" the joint, being all performed by
the single machine,
On Sheet 2 of the drawings Figs. 3, 4, 5, 6, 7, and 8 are detached views herein-
after more particularly referred to of separate parts of the apparatus.
Referring to Sheet 1 of the drawings the general arrangement of the machine
is similar to that of a lathe consisting of two end frames a supporting a bed b on
which are fixed two headstocks c c' each carrying a spindle d d' driven by means of
an endless strap passing round a driving pulley e. One of these spindles d' (the
left hand one on the drawing) is provided with a key or feather sliding in a groove
through the boss of the pulley e so that, although the latter drives it, the spindle
can slide horizontally through the headstock. The other spindle d is fixed so far
as horizontal movement is concerned.
On the inner end of each spindle is screwed or otherwise fixed a head or
block ff. The one fl on the "following" spindle d' is in the case of a single
machine for making canisters with loose lids (as that shown on the drawing for
example) a plain block or face plate with a central projection of such a
diameter as will just fit into the open end of the cylindrical body g of the
canister.
The construction of the other head f, will be best understood on reference to the
full size face view Fig. 3 (Sheet 2) and section Fig. 4.
In this case in addition to the projection f there is a central boss f* and a loose
cap the outside of which is the same diameter as the projection that is, equal
to the inner diameter of the body of the canister and its inner diameter is larger
than that of the central boss f. This is connected to the main plate ƒ of the head
by three screws f the holes in the cap being larger than the screws so that the
cap can be moved thereon excentrically in any direction to a limited extent.
Referring back to Sheet 1 it will be seen that the machine, is provided with
three arma g', g', g', each provided with a hand lever h³, h³, h³, and carrying at one
end a circular tool or runner 1,,, and either of these can be brought into action
by means of its own particular lever and when released is drawn back out of the
way by a coiled spring k.
The front tool has a plain cylindrical edge (see detached view Fig. 5) and is
for "throwing off" or flanging the edge of the cylindrical body g.
The latter is placed on the projection f' of the plain head (see Fig. 1) and by
placing the foot on the treadle this is advanced until the other edge of the body

page_text: passes on onto the loose cap f* and the projection f' of the working head which
as before stated are both of the same diameter and are at this time concentric. The
spindles d and are then set in motion and the handle-h' is raised pressing the
tool or runner against the edge of the cylindrical body g. which pushes the loose
plain
cap backwards and thus "throws off" or flanges the edge of the body all round as
shown at Figs 3, 4, and 5, as the cylinder revolves.
The foot is then removed from the treadle 7 and the spring m draws the following
spindle back.
A circular end with a groove punched round its edge in the usual form is now
fitted onto the "thrown " or flanged end of the cylindrical body which is again
placed in the machine and pressed forward by the treadle until the recessed end
fits against the cap f*.
The spindles are again set in motion and the handle is pulled over bringing
the tool or runner into action which "panes "the edge of the circular end over
the flange (see Fig. 6).
This handle is then released and the handle h pulled over bringing the runner
into action which bends over the doubled flanges, making what is known as a
"double seam.'
"
I prefer to make the runner in two parts so that the width of the groove can
be altered according to the thickness of the metal.
I may
hère observe that the machine shown on Figs. 1 and 2 is a single machine
for making canisters with loose lids, but the same machine may be used for making
double ended canisters by using a working head with loose cap on each spindle and
having a second set of tools or runners fixed on the same shaft so as to make a
"double seam " joint at each end of the cylindrical body at one operation.
Fig. 8 is a section of a slight modification of the working head for "throwing
off the flange wherein a loose ring n is substituted for the loose cap f* and is held
in place by a front plate o fixed on by screws p.
This form of working head is also adapted to be used in the ordinary crimping
machine for "throwing off" the edge or flange of the body for double seaming in
separate machine, and it can be adapted also for oval or oblong canisters by
making the head of a corresponding shape.
&
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed I declare that what I
claim is :-
" and "double seaming'
"
First The combination of "throwing off" "paning
circular tools or runners in one and the same machine, and
Secondly I claim the working head fitted with a loose cap or ring capable of
an excentric motion in any direction to a limited extent for "throwing off" a
flange on the body of a metal canister whether used with a plain runner only or in
combination with "paning and "double seaming" tools or runners substantially
as hereinbefore described and illustrated by the drawings annexed.
Dated this 27th day of October 1891.
"
GEO. DAVIES & SON,
4, St. Ann's Square, Manchester, Agents for the Applicant.