Improvements relating to Metallic Cans, Canisters, or the like.
Year: 1899

page_text: Date of Application, 31st Oct., 1899-Accepted, 16th Dec., 1899
COMPLETE SPECIFICATION..
[Communicated from abroad by THE AMERICAN TOBACCO COMPANY (Manufacturers),
a Corporation organized in accordance with the laws of the State of New
Jersey, United States of America, and having its office at No. 111, Fifth
Avenue, in the City of New York, State of New York, United States of
America.]
Improvements relating to Metallic Cans, Canisters, or the like.
I, PHILIP ARTHUR NEWTON, of the Office for Patents, 6, Bream's Buildings,
Chancery Lane, in the County of London, Patent Agent, 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 object of the present invention is to provide an improved cover construction
for boxes and cans, especially adapted for use in commen circular sheet metal
boxes and cans now in general use for holding various articles, but which may be
applied also to boxes and cans of other character and material.
The invention relates to that class of boxes or cans in which one member is
provided with a slightly inclined surface coacting with an engaging surface on
the other member, so that the engaging surface moves up the incline as the cover
is forced onto the box or can, and the cover is thus held more firmly the farther
on it is pressed, and the invention includes an improved construction of boxes or
cans employing this general principle, as fully described and claimed hereafter.
In the accompanying drawings forming a part of this specification,
Figure 1 is a longitudinal section of a box embodying the invention in one of
the preferred forms, and
Figures 2, 3, and 4, are similar partial views, showing modified constructions.
In each of the views, A. is the circular box or can, and B the screw cover, which
may be wholly or partially of sheet metal, as usual in such constructions. As
shown in Figure 1, the body A is provided at the top with an internal bead 1
formed by rolling over the edge of the sheet metal forming the body, a wire being
inserted, or not, as preferred. The screw cover B has a straight sheet metal
flange 2, overlapping and screwing onto the outside of the box by screw-threads 5,
and a thicker metal rim 3, having a depending flange 4, projecting inside the box,
and the external surface of this flange 4 tapers inwardly slightly, so as to form a
slight incline engaging the rib 1. By screwing down the cover B, therefore,
the rib 1, which forms the engaging surface coacting with the incline, will move
up the inclined flange 4, or toward that part which is of larger circumference, and
thus lock the cover on the box more firmly, as the cover is pressed down, while the
flange 2 moves over the outside of the body A, and supports the latter against
the locking pressure.
The same result may be secured by various constructions. In Figure 2, the
body A is provided with an internal inclined flange 6, formed by bending over
the top of the sheet metal body, and the screw cover B is shown as formed of a
single piece of sheet metal, having the outside straight flange 2, and inside flange 4,
of the same form as previously described in connection with Figure 1.

page_text: In Figure 3 is shown a construction similar to that shown in Figure 1, except
that the cover is formed throughout of sheet metal, and the body is provided with a
pin or projection 7, and the cover with a slot or groove 8, extending circum-
ferentially of the box, and being inclined toward the bottom of the box at a slight
angle, so that, by rotating the cover upon the box, and thus moving the slot 8
along the pin 7, the cover is pressed down, securing the same result as the screw
threads 5. It will be understood that the pin and slot may be arranged as shown,
with the pin on the box and the slot on the cover; or this arrangement may be
reversed and that this pin and slot connection may be made in any suitable
manner, the pin being formed by striking up a part of the metal, or inserting a
pin, as preferred, and the slot or groove being formed by cutting away or striking
up the metal. Any other form of inclined or screw connection may be used.
In all the constructions thus far described, the inclines are inside the box. It
may frequently be preferable, however, to form the incline external to the box,
and one form of such box is shown in Figure 4. In this construction, the circular
sheet metal box A is provided with a rib 9 similar to rib 1 of Figures 1 and 3,
except that it is formed by rolling the edges of the box outwardly instead of
inwardly, and the sheet metal cover B is provided with a straight internal flange 10,
entering the box, and corresponding to the external flange 2 of the con-
structions previously described, and with an inclined external flange 11, corre-
sponding to the internal inclined flange 4, the screw threads 5 being inside the box.
It will be understood that other modifications of construction may be made in
carrying out the invention, and the invention is not to be limited to the exact form
of any of the constructions shown.
Having now particularly described and ascertained the nature of the said
invention, and in what manner the same is to be performed, as communicated to
me from abroad, I declare that what I claim is:-
1. A circular box or can and cover, one of said members having a surface
inclined in the direction of movement of the cover, and the other member having
an incline-engaging surface, and an inclined or screw connection between the
cover and box, whereby the rotation of the cover presses the cover onto the box,
forces the engaging surface up the incline and locks the cover in place, sub-
stantially as described.
2. A cam and cover substantially as shown and described in connection with
Figures 1 and 2.
3. A can and cover substantially as shown and described in connection with
Figure 3.
4. A can and cover substantially as shown and described in connection with
Figure 4.
Dated this 26th day of October 1899.
NEWTON & SON,
Agents for the Applicant.