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Патент USA US2116338

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May 3, 1938.
Filed Aug. 4, 1956
MHA/WMM ßfaßjís
Patented May 3, 1938
Winfred M. Brooks, West Orange, N. J.
Application August 4, 1936, Serial No. 94,139
2 Claims. (Cl. 29-148)
This invention relates generally to sealing
means, and has more particularly reference to
an improvement in connection with compressible
seals such as the well-known lead seals.
The ordinary lead seal is usually associated
with a shackle-member, taking the form of a cord
or a wire, one end of which is anchored or im
bedded in the lead and the other end of which
is passed through the article to be sealed and
10 thereafter threaded through an opening in the
lead. In certain cases, the shackle-member is
threaded through the lead a number of times.
It has been found that the lead can be removed,
adjacent the opening through which the shackle
member enters, by using a heated needle to melt
the metal and that thereafter the shackle-mem
ber can be withdrawn from the lead and rein
serted without leaving evidence of having been
tampered with. In some cases also, where the
20 shackle-member consists of a strong wire, it has
been found possible to pull the wire out of the
lead and to reinsert it without any tell-tale eiTect.
The main object and feature of this invention
is to obviate the above-mentioned objections to
25 the lead seals now in use, and to devise a method
for rendering seals less liable to successful tam
In the accompanying drawing the invention is
disclosed in several concrete and preferred forms
30 in Which
Fig. 1 is a sectional View of a two-part seal be
fore the parts have been compressed;
Fig. 2 is a top plan view of the cup-member
shown in Fig. 1;
Fig. 3 is a view similar to Fig. l but showing the
parts sealed;
Fig. 4 is a sectional View of a modified form of
Fig. 5 is a plan View of the compressible mem
40 ber to be associated with the cup-member of Fig.
4 showing the shackle-member imbedded there
Fig. 6 is a vertical sectional View substantially
on the plane of line 6_6 of Fig. 5;
Fig. 'l is a sectional assembled view of the parts
shown in Figs. 4, 5, and 6, afterv the compressible
member has been slightly compressed;
Fig. 8 is a view similar to Fig. 7, but showing the
parts fully compressed; and
Fig. 9 shows a plan view of a seal made accord
ing to the present invention with the shackle
member passed through the compressible material
a number of times.
Referring to Figs. l, 2, and 3», I indicates a cup
55 member, of sheet-material, having an open mouth
2 and an upstanding rim 3.
4 is a member of
compressible material having imbedded therein a
member to be sealed, preferably a shackle-mem
ber 5 of relatively incompressible material. The
compressible member is inserted in the cup-mem
ber and it will be noted that said members are of
different contours so as to leave vacant space
between them, and further that a portion 4a of
said compressible member projects above rim 3
of the cup-member, and that shackle-member 5
extends freely above said rim. One or the other
of the two members is subjected to a slight defor
mation to hold them temporarily together and in
this instance the deformation consists in pcen
ing or bending the metal of the rim slightly in an
inward direction. When the seal is to be used,
the free end of the shackle-»member is passed
through the article to be sealed and is then
threaded through opening t of the compressible
material, after which the compressible material
and cup-member are subjected to pressure there
by causing said compressible material to occupy
the vacant space within the cup-member and ñll
ing it substantially flush with the rim, as indi
cated in Fig. 3, the shackle-member extending 25
over the top of the rim. By these means, tam
pering is rendered. exceedingly diñicult and, if
effected, will leave evidence thereof.
In Figs. 4 to 8 inclusive is shown a modiñed
form of the invention. I-lere, cup-member l is 30
initially formed with a rim 8 that is inwardly bent
to form a constricted opening. Compressible
member 9 is formed with a recessed back l0 and
carries a shackle-member I l. It will be seen that,
after the compressible member has been inserted 35
into the cup-member, the members can be held
temporarily together by subjecting the compres
sible member to a slight pressure thereby causing
the recessed back to flare outwardly as shown in
Fig. '7. If desired, this action can be facilitated 40
by providing the interior bottom of the cup-mem
ber with a convex portion l 2. 'I‘he shackle-mem
ber can now be threaded through the compres
sible material and the latter and the cup-mem
ber are now subjected to pressure thereby bring
ing the entire body of compressible material into
the cup-shape member substantially ñush with
the rim thereof.
Fig. 9 merely shows a modiñed form of the in
vention in which the compressible material has a
shackle-member i3 passed a number of times
through it and is further provided with a spike
This seal is particularly useful for money
I claim:
1. The method of forming a sea1 which consists
in: inserting a compressible member, having an
imbedded shackle member, into a cup-member,
composed of sheet-material, with a portion of said
compressible member and with said shackle-mem
ber projecting above the rim of the cup-member;
slightly compressing said compressibie member
to prevent it from being disengaged from said
10 cup-member; then threading the shackle-member
back through the body of compressible material;
and thereafter compressing the compressible ma
terial to ñll the cup-member.
2. The method of forming a seal which consists
in: inserting a compressibie member, having an
imbedded shackle member, into a cup-member,
composed of sheet-material, with a portion of said
compressible member and with said shackle-mem
ber projecting above the rim of the cup-member;
compressing the compressibie member by stages;
and threading the shackle-member through the
body of compressible material between stages of
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