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Патент USA US3098462

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July 23, 1963
TADAO YOSHIDA
3,098,460
SEWING MACHINE PRESSER FOOT
Filed Aug. 18. 1961
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United States Patent Office
3,098,450
Patented July 23, 1963
1
2
3,098,460
In actual use, the base 14 is rigidly secured upon the
presser foot mounting post of the sewing machine. For
attaching the right fastener strip 23a to the garment ma
terial, the presser foot element 20 is shifted to the left, as
SEWING MACHINE PRESSER F001‘
Tadao Yoshida, 339 Ill-chrome, Suwada-maehi,
Icliikawa-shi, Chiba-lien, Japan
shown in vFIGURE 3, so that the ball detent 28 will engage
Within the indent 22a of the presser foot T-shaped mem
Filed Aug. 18, 1961, Ser. No. 132,407
1 Claim. (Cl. 112—235)
ber 18, thus positioning the slide fastener elements 23a to
This invention relates to sewing machines and, more
the left side of the reciprocating needle 25 which is re~
particularly, to a special purpose presser foot for sewing
ceived Within the right end of the aperture 24 for sewing
hidden slide fastener tapes to garment material.
10 engagement with the slide fastener strip along the right
It is an object of the present invention to provide a
side of the strip elements 23a. In applying the left slide
presser foot for securing hidden slide fastener tapes to
fastener tape, the presser foot element 20 is shifted to the
garment material on a sewing machine in a fast, e?icient,
right, as shown in FIGURE 4, so that the ball detent 28
and simple manner.
engages the indent 32b, thus causing the guide groove 28 to
Still another object of the present invention is to pro 15 position the slide fastener elements 33b to the right of the
vide a single presser foot assembly which can be attached
reciprocating needle 25 which is received within the left
to the presser foot support post of a sewing machine and
end of the elongated aperture 22.
selectively adjusted to secure both sides of the cooperating
‘It will thus be recognized that in accordance with the
pair of slide fastener tapes to the garment material with
present invention, a presser foot assembly has been pro
out time consuming replacement of parts or disassembly 20 vided which will facilitate the attachment of both the
of the accessory unit.
right and left sides of the slide fastener tapes to the gar
All of the foregoing and still further obiects and advan
tages of this invention will become apparent from a study
of the following speci?cation, taken in connection with the
accompanying drawing, wherein:
ment material simply by shifting laterally the position of
the presser foot element 20 relative to the base 12, which
actually shifts the guide groove 22 relative to the
25 needle 25.
FIGURE 1 is a perspective view of a presser foot as
sembly made in accordance with the present invention in
actual use;
FIGURE 2 is a bottom plan view of the presser foot
shown in FIGURE 1;
‘FIGURE '3 is a front elevational view, partly in section,
of certain parts of the device shown in the operating posi
tion of FIGURE 1; and
FIGURE 4 is a view similar to FIGURE 3, showing
It will be noted, accordingly, that the instant presser
foot assembly comprises a leg and a laterally shiftable
foot, the foot having (1) a longitudinal groove which
extends upwardly from the sole thereof which accommo
dates the slide fastener elements, and (2) a needle pass
thru slot or opening which allows the needle to secure the
tape to the article to which it is being attached.
While this invention has been described with particular
reference to the construction shown in the drawing, it is
the parts in an adjusted position for sewing the left slide 35 to be understood that such is not to be construed as im
fastener tape strip to the garment material.
parting limitations upon the invention, which is best de
Referring now to the drawing, a presser foot assembly
?ned by the claim appended hereto.
10 made in accordance with the present invention is shown
Having thus described my invention, 1 claim as new and
to include a base or leg 14 having a groove 12 for receiv
ing the presser foot mounting post of the sewing machine 40
therewithin. This base 14 includes a head 16 having a lat
erally extending T-shaped slot 17 that slidably receives a
desire to secure by Letters Patent:
A presser foot, used in combination with a presser sup
port post of a sewing machine, for securing concealed
slide fastener tapes to garment materials, comprising a
correspondingly shaped T-head 13‘ of a presser foot ele
base for attachment to said presser foot support post, a
ment 20.
presser foot element slidably carried by said base for lat
As is more clearly shown in FIGURES 2 to 4 of the 45 eral movement between laterally spaced apart sewing posi
drawing, the presser foot element 20 includes a longitu
tions, a longitudinal groove provided on the under end
dinal groove 22 in the sole of the foot ‘that serves as a guide
surface thereof for guiding a strip of the slide fastener
for slidably receiving the strip elements 23a, 12 of the right
element, an internal pocket formed in the under end sur
face
of said base and opening at said surface, a spring dis
The forward end of the presser foot element 20 is pro 50
posed in said pocket, a ball detent disposed in said pocket,
vided with a laterally extending opening 24 which extends
said ball detent being pushed outwardly by said spring, a
beyond the lateral sides of the groove 22 at each end. This
pair
of laterally spaced apart indents formed in the upper
aperture 24 receives the reciprocating needle 25 of the
surface of said presser foot element, whereby said presser
sewing machine therethrough in all adjusted positions of
the presser foot element 20‘, as will be hereinafter more 55 foot element is restrained at desired positions in relation
to‘ said base, and a needle passthrough aperture of laterally
fully described.
elongated shape formed in said presser foot element and
The head 16 of the presser foot assembly has an inter
nal pocket 26 within which a ball detent 28 is supported
communicating with said longitudinal groove for guiding
and left slide fastener tapes, respectively, therewithin.
for sliding and rolling movement into engagement with the
the fastener strips.
upper surface of the T-shaped member 18 of the presser 60
foot element 20 under the action of a compression coil
References Cited in the ?le of this patent
spring 30. The upper surface of the T-shaped member 18
UNITED STATES PATENTS
of the presser foot element is provided with a pair of lat
erally spaced apart indents 32a, 32b, each of which is
adapted to releasably receive the detent 28 to secure the 65
presser foot element in a laterally adjusted position relative
to the base 12.
822,340
2,909,136
3,003,444
3,024,751
Bivins ________________ __ June 5,
Dixon et al. __________ .._ Oct. 20,
Gary ________________ __ Oct. 10,
Burgess _____________ __ Mar. 13,
1906
1959
1961
1962
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