Improvements in Tin Canisters and other Receptacles for Storing Tobacco, Food, and other Substances.
Year: 1894

page_text: Date of Application, 21st Sept., 1894
Complete Specification Left, 22nd July, 1895-4ccepted, 24th Aug., 1895
PROVISIONAL SPECIFICATION.
Improvements in Tin Canisters and other Receptacles for Storing
Tobacco, Food, and other Substances.
We, THOMAS JENNER of Lebonah Chatham-intra, Rochester in the County of
Kent Brewery Manager and HENRY ALFRED LEVERETT of 16 Tokenhouse Yard
in the City of London Engineer do hereby declare the nature of this invention to
be as follows:-
Our invention consists in constructing metallic boxes or tin canisters (or
receptacles having their upper part made similar to that of tin canisters) with
means for conveniently opening the same, the said means being of such a nature as
not to be in the way during transit, storing or use. The invention is applicable to
tin canisters or receptacles having the upper part hermetically closed with tagger
tin plate or other thin metal and to tins or receptacles not necessarily closed with
so thin sheet metal. With the tin canister we use a loose cover fitting over the top
and apply a cutter or implement thereto for opening the tin, such cover serving to
cover the tin after the tin has been opened.
In one forin we make the tin with a hermetically closed tagger tin or
comparatively thin tin cover with flange inside the tin, the said cover being formed
with a circular slightly raised set up ridge near the flange so as to present a line of
metal slightly attenuated by the setting up or stamping. Or we form the box with
an inner circumferential narrow ridge or ledge near the top by applying a tool to
the outside of the tin and place thereon the tagger tin cover provided with the said
shallow ridge and make a joint by soldering. Or we make the said cover with a
flange which is soldered upon the outside of the tin, the latter having been slightly
reduced in diameter in this upper part. The loose cover we provide with a cutter
or file which when the cover is turned round upon the box shaves off or files off the
upstanding ridge on the tagger tin cover and thus partly or wholly severs it in two,
so that the middle part can be removed. When the sealed cover is a little distance
below the top edge of the canister we may make the cover of wood contained partly
in the space so formed and fitted with a piece of file or other cutter, which when the
cover is inverted can be brought to act upon the ridge.
In order to diminish the risk of cutting the said ridge needlessly away and
mingling the shavings or filings with the contents of the tin, we may form the ridge
with a projection in one part beyond its circular contour and we raise this part and
a point within this part of the contour slightly higher than the other part of the
said ridge; these parts will then be cut through entirely while the other part will
only be partially cut through but so that the cover can be easily taken off by
taking hold of it with a hook inserted in the hole formed by the abrasion at the
aforesaid point.
Or with the hermetically sealed cover applied in one of the modes described but
by preference the one in which the tin is formed with an inner narrow ledge upon
which the cover is placed and then hermetically sealed we provide the loose cover
with a cutter which serves to cut off the top of the tin all round just below the
sealed cover.
For this purpose we form the tin with a small recess from the outside
and we make the loose cover with a cutting tool which finds its place in the said
recess. When the loose cover is turned round the cutting tool cuts away all round
beginning at one side wall of the small recess. The recess may be straight or
slanting or with a straight or sloping downgoing part terminating in a lateral part
ID077

page_text: like a bayonet joint for the cutter to lie in and thus hold the loose cover from
dropping off. The bottom of the recess would be a little below the sealed cover
and the latter would be notched out to fit round the inner bulge formed by the
recess.
By another arrangement we form the tin with an inner circumferential groove
just below the sealed cover, so that a corresponding circumferential ridge is formed
on the outside and we form the loose cover with a file or cutter for filing or shaving
off the top of the ridge so that the top of the tin is or can thereby be detached.
The cutter may be either fixed or made to slide a little towards the centre of the
loose cover so as to first pierce the wall of the recess in a radial direction when the
pressure of the finger is applied thereto and then to cut circumferentially by turning
the cover round.
In another form we apply the cutter implement in the form of a flat bar which
normally lies flat but when turned on edge has the cutting edge on one or both ends
applied to cut through the hermetically sealed cover.
Tins or receptacles constructed as described are suitable for tobacco, biscuits,
meat and other substances which are to be kept from the influence of the air.
Dated this 21st day of September 1894.
JENSEN & SON,
77 Chancery Lane, London, W.C., Patent Agents.
Improvements in Tin Canisters and other Receptacles for Storing
Tobacco, Food, and other Substances.
We, THOMAS JENNER of Lebonah, Chatham intra Rochester, in the County
of Kent, Brewery Manager, and HENRY ALFRED LEVERETT of 16 Tokenhouse
Yard, in the City of London, Engineer, 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 :-
Our invention consists in constructing metallic boxes or tin canisters (or
receptacles having their upper part made similar to that of tin canisters) with
means for conveniently opening the same, the said means being of such a nature
as not to be in the way during transit, storing or use. The invention is applicable
to tin canisters or receptacles having the upper part hermetically closed with
tagger tinplate or by preference soft composition metal and to tins or receptacles
not necessarily closed with so thin sheet metal. With the tin canister we use a
loose cover fitting over the top and apply a cutter or implement thereto for opening
the tin, such cover serving to cover the tin after it has been opened.
In one form shewn in the vertical section Fig. 1 and the plan view Fig. 2 we
make the tin A with a hermetically closed cover B of tagger tin or by preference
soft composition metal. It has been found that tagger tin plate is not so suitable
for the purpose here in view because the cutting tools "pins or binds during the
operation of cutting whereas a soft composition metal such as pewter offers no such
objection. Said cover B has a flange Binside the tin and the tin is formed with
an inner narrow ridge or ledge A³ near the top by applying a tool to the outside
of the tin. Upon this inner ridge we place the cover B and make a joint by
soldering. The cover B is formed with a circular slightly raised set up ridge B³
near the flange B₁ so as to present a line of metal slightly attenuated by the setting
up or stamping. In the vertical section Fig. 3 the flange B of the cover B is
turned downward and rests upon the inner ridge A¹ of the tin.
Or as shewn in the vertical section Fig. we make the cover B with a flange
which is soldered upon the outside of the tin A, the latter being slightly reduced
in diameter in this upper part.

page_text: The loose cover C Figs. 1 and 2 we provide with a cutter D or a file which
when the cover is turned round upon the box shaves off or files off the upstanding
ridge B2 on the cover B and thus partly or wholly severs it in two so that the
middle part can be removed.
When the cover B as shewn in Fig. 5 is a little below the top edge of the
canister we may make the cover C of wood contained partly in the space so formed,
and fit it with a piece of file D or a cutter which when the cover is inverted to the
position shewn in Fig. 5 can be brought to act upon the ridge, and cut through it
so that the middle part of the cover may he removed. Fig. 6 shews it thus removed
and the cover C turned back with the cutter D upward.
In order to diminish the risk of cutting the said ridge B2 needlessly away and
mingling the shavings or filings with the contents of the tin, we may as shewn in
Fig 4 and in the plan view Fig. 7 form the ridge with a projection in one part B³
beyond its circular contour and we raise this part of the contour and a point B
within this part B3 slightly higher (see Figs. 4 and 7) than the other part of the
said ridge. These parts B B will then be cut through entirely, while the other
part B2 of the ridge will only be partially cut through but so that the part of the
cover within the ridge can be easily taken off by taking hold of it with a hook
such as E inserted in the hole formed by the abrasion at the aforesaid point B.
This hook wrapped in a paper containing directions for opening the tin may be
placed inside the cover C.
Or as shewn in Figs. 8 and 9 with the cover B applied in one of the modes
described but by preference the one in which the tin A is formed with an inner
narrow ledge A¹ upon which the cover B is placed and then hermetically sealed we
provide the loose cover C with a cutter D which serves to cut off the top of the tin
all round just below the sealed cover B. For this purpose we may also as shewn
in Figs. 10 and 11 form the tin with a small recess Ax from the outside and we
provide the loose cover C with a cutting tool D which finds its place in the said
When the loose cover C is turned round, the cutting tool cuts away all
round beginning at one side wall of the small recess A*. The recess may be
straight or sloping, and may as shewn in Figs. 12 and 13 which shew a file tool D
terminate below in a lateral part like a bayonet joint for the cutter to lie in after
the top of the tin has been cut off and thus hold the loose cover from coming off.
The bottom of the recess is a little below the cover B and the latter is notched out
to fit round the inner bulge formed by the recess.
recess.
The cutter may either as in the previously described examples be rigidly fixed or
as shewn in Figs. 14 and 15 be made to turn on a fulcrum pin D₁ and be formed
with a slot or notch D2 into which the stop pin D³ enters when the cover C is
turned round for shaving or filing off the ridge B2. Or the cutter instead of
turning on a fulcrum may be made to slide a little towards the centre of the loose
cover C so as first to pierce the wall of the recess A* in a radial direction when
the pressure of the finger is applied thereto and then to cut circumferentially by
turning the cover round.
In another form shewn in Figs. 16 and 17 the cutter implement is in the form of
a flat bar which normally lies flat as shewn in dotted lines but when turned on edge
and placed in the groove formed between two pieces of tin C on the underside of
the cover C has the cutting edge applied to cut through the cover B.
Tins or receptacles constructed as described are suitable for tobacco, biscuits,
meat and other substances which are to be kept from the influence of the air.
When we speak of tin canisters we include in that term receptacles having their
upper end formed like tin canisters.
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. Providing the sealed cover of tin canisters with an upwardly projecting
hollow ridge such as B2 in combination with a loose cover, adapted to fit over the

page_text: top of the canister, and provided with a cutter or file implement for shaving off or
abrading said ridge for the purpose of removing the part of the sealed cover which
is within such ridge.
cover,
2. Providing the upper part of tin canisters having a sealed cover such as B
with a circumferential outwardly projecting hollow ridge just below the sealed
in combination with a loose cover adapted to fit on the top of the canister
and provided with a cutter or file implement for shaving off or abrading said ridge
for the purpose of removing the upper end of the canister above said ridge.
3. The constructions of tin canister shewn and described.
Dated this 22nd day of Jul 1905
JENSEN & SON,
77 Chancery Lane, London, W.C., Patent Agents.
JENSEN & SON,
77 Chancery Lane, London, W.C., Patent Agents.