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Патент USA US2016241

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at 1, 1935.
J. M. CLARK ET AL
'
2,M6»241
BUTTON
Filed Oct. 29, 1954
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@7272,” Clark
Ira D. 25rd , deceased,
‘?g 771a Cbrzadcz ?usz‘ Com/vary
and l/l'ozef M 23rd,
fctecuj?i‘s and frasZ‘ees -
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2,016,241
Patented Oct. 1, 1935
UNITED STATES PATENT OFFICE
2,016,241
BUTTON
John M. Clark, Detroit, Mich., and Ira D. Ford,
deceased, late of Roseland, Ontario, Canada, by
The Canada Trust Company, London, Ontario,
Canada, and Violet M. Ford, Roseland, Ontario,
Canada, executors and trustees, assignors to
Universal Button Fastening & Button Company,
Detroit, Mich., a corporation of Michigan
Application October 29, 1934, Serial No. 750,486
In Canada March 15, 1933
3 Claims.
(Cl. 24-113)
This invention relates to buttons, and among
other objects aims to provide a cheap metal but
ton of improved super?cial accuracy.
The nature of the invention may be readily
5 understood by reference to one illustrative but-'
ton shown in the accompanying drawing.
In said drawing:
Fig. l is a sectional elevation of a button
on an enlarged scale and exaggerated in some
10 respects to illustrate details;
Fig. 2 is an enlarged bottom plan view thereof
also exaggerated in some respects to illustrate
the elimination of the effect of irregularities in
the button head; and
15
Fig. 3 is a sectional elevation of the head cov
ering shell before the latter is crimped over the
button head.
Buttons of the present character are generally
employed on working clothing, play-suits, etc. to
20 which they are attached by high speed ma
chinery. A rapid attachment by machinery is
not practicable unless the buttons be uniform in
size and super?cially accurate in dimensions.
irregularities and imperfections, small though
25 they are, cause much difficulty and delay since
they are responsible for many interruptions of
the high speed attaching machines. Low cost of
manufacture and low attaching costs are of
course essential in buttons for the aforesaid
30 character of garments.
Low manufacturing costs are realized in this
instance by making the button without waste
from relatively cheap solid soft steel rod or wire
blanks whose length is sufficient to provide an
35 adequate volume of metal for the head and shank
of the button. The wire ‘or rod may advan
tageously be about one-quarter of an inch in
diameter and have a carbon content of approxi
mately .05 to .15 of 1%. The diameter of the
40 blank is substantially the diameter of the shank
of the ?nished button. The length of the blank
is adjusted to the desired diameter of the head
of the ?nished button. In other words, the di
ameter of the button head may be governed
45 largely by the selected initial length of the but
ton blank without materially altering the char
acter of the forming operations or of the me
chanical devices employed for forming the but
ton.
50
As here shown, the button comprises a solid
body In consisting of a relatively thin head ll
and a round cylindrical shank I2 ‘which as afore
said is substantially the original diameter of
‘ the blank wire. The end of the shank is formed
65 with a die recess or cup l3 having a curved bot
tom for bending or upsetting the fastener prongs
by means of which the button is secured to a
garment. Being made of steel, the surface of the
cup itself is su?iciently hard without the use of
auxiliary elements, to curl or upset the fastener 5
prongs. The button may be equipped in well
known ways for attachment by either a single or
double prong fastener.
The head of the button is here shown ?nished
by a thin metal shell. l4 preferably of rust- 10
proofed or non-corrosive sheet metal appro
priately embossed on its face as at‘ l5 for the
purpose of decoration or otherwise.
The shell
is secured to the button head by ?anges It which
are crimped around the edge of the button head 15
into gripping contact with the back or under
face of the button head. The button may be
manufactured according to the process fully ex-.
plained in the co-pending application Serial No. ”
654,902 ?led February 2, 1933 and in the Patent 20
No. 1,920,497 of which the ‘said co-pending ap
plication was a continuation in part as regards
subject matter covered in this application, and it
will not be necessary therefore again to describe
all the details of manufacture. It will be sum- 25
cient for present purposes to explain that the
rod-like blanks of predetermined length are ?at
tened at one end by a header to form the button
head, the portion of the blank consisting of the
button shank being, during such ?attening op- 30
eration, con?ned by a die to prevent lateral
spreading. Preferably the die cup I3 is substan
tially completely formed in the end of the blank
before the opposite end is subjected to heading
operations.
‘
This method of manufacture materially con
tributes to low cost not only by employing rela
tively cheap raw materials, but by minimizing"
waste and handling.
' In ?attening the end of the blank to form the 40
button head, the latter is allowed to spread lat
erally freely, and the ?nal diameter and circu
lar contour of the head results from the free or
natural spreading of the predetermined volume
of metal allotted to form the button head. This 45
avoids the formation of ?ash which would in
evitably occur if an effort were made to con?ne
and thereby to shape the rim of the button head,
it being understood that it is generally impos
sible so accurately to control the process of 50
manufacture as to avoid the production of ?ash.
In spite of uniformity of materials and precision
in apparatus employed, slight though imper
ceptible irregularities occur in the circular shape
of the button head which involve problems solved 55
2 .
2,016,241
by the present invention as hereinafter explained.
As suggested above, the irregularities, slight
though they are, which may occur in the button
present difficulties in the attachment of‘ the but
ton by high speed automatic machines.
These
difficulties are eliminated (and the ‘button thus
made practical for use in high speed machines)
by covering the button heads with accurately
shaped sheet metal shells ill whose internal die
10 ameter A is su?iciently large to accommodate all
variations in button head diameters and which
shells are applied concentrically to the button
shank. The shells may be stamped from sheet
metal by ordinary dies (at which time they may
15 be embossed as aforesaid) and they can there
may be made with accuracy, they may be accu
rately positioned and assembled concentrically
by tools or dies which are themselves ?xed in
concentric relation and respectively engage and
center the button shank and shell.
This application is a ‘continuation in part of
the co-pencling application Serial No. 654,902.
Obviously the invention is not limited to the
details of the illustrative construction since these
may be variously modi?ed. Moreover it is not 10
indispensable that all features of the invention
be used conjointly since various features may be
used to advantage in different combinations and
subcombinations.
Having described the invention, what is claimed
fore be made absolutely accurate. To avoid any
objectionable looseness of. the shell on the button
head which would generally ensue by reason of
its increased size to take care of variations in
20 button head and also to prevent rotation of the
shell on the head, the button is advantageously
button comprising a shank and an integral head,
provided on ‘its underface adjacent its'rim with
irregularities in its surface in the form of a series
said head, the shank of the button being centered
of projections ‘ll (‘four in the present instance)
overlthe edge of the button head whereby the
which prevent looseness or rotation of the shell
on the ‘button head even though the latter may
not entirely fill the shell as indicated in exagger
ated condition at E8 in Figs. 1 and 2. As here
shown, the ?anges it? of the shell are curled over
3.0 , and‘pressed into tight engagement with the back
" face of the ‘button in the region of the projections
or teeth "H. The latter indent the ?ange of the
shell su?iciently to prevent rotation and also to
hold the‘shell ‘?rmly on the button head against
3.5 any lateral ‘movement. As stated above, the shell
is preferably located‘ centrally with reference to
the shank 1| 2 and independently of any eccentrici
ties or irregularities in the button head. Thus
the outer edge or rim i9 of the finished button
49.. head as formed by the shell itself is not only
perfectly circular and uniform, but is concentric
with the shank IZ regardless of eccentricities or
irregularities in diameter of the button head H.
One form of ‘mechanism'for ‘thus attaching the
45 shell concentrically with the button shank is dis
closed in the said co-pending application, but it
is unnecessary for present purposes to repeat
such disclosure ‘here. It will be understood that.
the shell may ‘be applied concentrically to the
50 shank by any means which hold the shell and
button shank concentrically to each other (and
independently of the button head I l) at the time
?ange ‘I6 of the shell is crimped into gripping
engagement with ‘the back of the button head
55 and caused to conform ‘to the aforesaid noncircu
lar irregularities on the back face of the button
head sufficiently to- prevent rotation of the shell
on the button head. Since neither the button
shank nor ‘the shell involve in ‘their formation
60 the irregularities present in the button head, but
1s:
1. As an article of manufacture a solid steel
a shell applied over the button head and sum
ciently larger than the button head in diameter
to allow for irregularities in shape and size of
concentric to the shell and the latter crimped
shank and shell are concentric regardless of ec 25
centricity ‘of the button head.
2. As an article of manufacture a metal but
ton comprising in combination -a solid steel body
formed with a head and an integral shanksaid -
head having small projections on its underface
‘adjacent its rim, and a thin sheet 'metal shell
covering the top of ‘the button head and ‘having
a ?ange bent over the rim of the button head
into ?rm engagement with said projections and
the underface of said head, said shell being
slightly enlarged in diameter relative to the but
ton head to accommodate small irregularities in
size and shape of the button head.
‘
3. As an article of manufacture a solid steel
button comprising in combination a solid head 40
provided with an integral shank, and a thin
sheet metal shell covering the top of the button
head and having a ?ange bent over the rim of
the button head into ?rm engagement with the
underface of said button head adjacent its rim,
said button head being formed with small irreg
ularities in its underface in the region engaged
by said flange, said flange being pressed against
said irregularities so as to conform thereto and o
to prevent rotation of said shell on the button
head.
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JOHN M. CLARK.
THE CANADA TRUST COMPANY,
By T. G. MEREDITH,
Chairman .09‘ the Board.
CHAS. J. CLARKE,
Treasurer.
VIOLET M. FORD,
Executors and Trustees of Ira D. Ford, Deceased. 60
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