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Патент USA US3089456

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May 14, 1963
'
v. .1. PATRICK ETAL
3,089,446
FEEDING MECHANISM FOR SEWING MACHINES
Filed May 6, 1960
3 Sheets-Sheet 1
<l'
‘1
INVENTORS
Vito J. Patrick
John D. Fisken/
Frank lénrzesz, Jr:
24M ATTORNEY
.dmw
May 14, 1963
3,089,446
v. J. PATRICK ETAL
FEEDING MECHANISM FOR SEWING MACHINES
Filed May 6, 1960
5 Sheets-Sheet 2
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May 14, 1963
v. J. PATRICK ETAL
3,089,446
FEEDING MECHANISM FOR SEWING MACHINES
Filed May 6, 1960
_
3 Sheets-Sheet 3
INVEN TORS
Vito J Patrick
John D. H's/Ben
BY
Frank ]7énneSZ,J7.'
%E
gzl‘ORNEY
United States Patent Office
2
1
3,089,446
3,089,446
Patented May 14, 1963
_
FEEDING MECHANISM FOR SEWING MACHINES
Vito J. Patrick and John D. Fisken, Linden, and Frank
Fennesz, Jr., Iselin, N.J., assignors to The Singer Man
ufacturing Company, Elizabeth, N.J., a corporation of
New Jersey
Filed May 6, 1960, Ser. No. 27,354
2 Claims. (Cl. 112—211)
The present invention relates to a feeding mechanism
for sewing machines and particularly to a feeding mecha
nism of the type having a feeding wheel.
The object of this invention is to provide a wheel feed
for sewing machines that is economical in that it is com—
; the link 21, the amount of which is variable by adjust
ment of the anchor link 22 to change the pivot axis of
the link 21. Endwise movement of the pitman 17 im
parts oscillation to the sleeve 16. The sleeve 16 is
coupled to the shaft 15 by a one-way clutch 23 to impart
intermittent one-way rotation to the shaft 15 upon oscil
lation of the sleeve 16.
The feeding element comprises a feed wheel 24 which
is annular or in the form of a ring and is large enough to
10 provide access to the hook 11. The feed wheel 24 is
journaled for rotation in a frame 25 and includes a ra
dially extending ?ange 26 that extends through a slot in
the throat plate '6 and has ‘a peripheral surface 27 engag~
ing the Work and de?ning the feeding surface. The feed
posed of a minimum number'of elements that are each 15 wheel 24 is held in the frame 25 by engagement of the
side wall of the ?ange 26 against one face of the frame
inexpensive to manufacture, it is compact, and it is easy
25 and a plate 25a that engages the other face of the
to assemble and to adjust, and which at the same time is
frame 25. The plate 25a is secured to the feed wheel~
dependable, durable and efficient.
24 by screws 24a. The work is held against the feeding
Having in mind the above and other objects that will
be evident from an-understanding of this disclosure, the 20 surface 27 by a roller presser 28 carried by a presser
bar 29 mounted in the head 4. The feed wheel 24 also
invention comprises .the devices, combinations and ar
includes a laterally extending sprocket 30 secured there
rangements of parts as illustrated in the presently pre
ferred embodiment of the invention which is hereinafter
to by the screws 24a and about which is entrained a lug
belt 31. The belt 31 is also entrained about a sprocket
art readily to understand the function, operation, con 25 32 secured to the feed shaft 15. Thus, upon rotation of
set forth in such detail as to enable those skilled in the
struction and advantages of it when read in conjunction
with the accompanying drawings in which:
the feed shaft 15, rotation is imparted through the
ing machine of FIG. 1.
FIG. 3 is a fragmentary end elevational view of the
sewing machine of FIG. 1 with portions broken away and
highest point of the feeding surface relatively to the point
in section.
33 that slidably receives a tongue 34 on a depending arm
sprockets 32 and 30 and the belt 31 to the feed wheel
24.
FIG. 1 is a front view of a sewing machine embody
The frame 25 is mounted on the bed of the machine in
ing the present invention with parts of the sewing ma
chine broken away and in section to illustrate the inven 30 a manner to provide for vertical adjustment in order to
vary the rise of the feeding surface 27 above the throat
tion more clearly.
plate v6 and for horizontal adjustment to position the
FIG. 2 is a bottom plan view of the bed of the sew
of stitch formation. For this purpose, the frame 25 is
provided at the rear of the bed 1 with a horizontal groove
35 mounted on the feed shaft 15. A fastening screw
FIG. 4 is a fragmentary sectional view taken substan
36 extends through a slot 37 that is elongated in a direc
tially on the line 4-~4 of FIG. 4.
tion parallel to the longitudinal direction of the groove
FIG. 5 is a fragmentary sectional view taken substan
40 33 and is threaded into the arm 35. At the forward end
tially on the line 5——5 of FIG. 3.
of the frame 25 there is provided a bracket 38 that is
FIG. 6 is a sectional view taken substantially on the
secured to the element 25 in laterally adjusted position
line 6-6 of FIG. 3.
by a screw 39. The bracket 38 has a slot extending in
With reference to the drawings, there is illustrated a
wardly from the free end thereof that receives a reduced
sewing machine having a frame including a bed 1 from
one end of which rises a standard 2 that carries a bracket 45 diameter portion 40 formed by a peripheral groove in an
adjusting screw 41 that is threaded into the bed plate 5.
arm 3 terminating in a head 4. The bed 1 includes a
To prevent reverse rotation of the feed shaft 15, there
bed plate 5, the upper surface of which, together with
is provided a second one-way clutch 42 mounted thereon
the upper surface of a throat plate 6, comprises the work
and anchored to the arm 35.
supporting surface of the machine. Iournaled longitu~
dmally of the bracket arm 3 is a main shaft 7 upon the 50
end of which is a belt pulley 8 by means of which power
is delivered to the machine. The stitching mechanism
To maintain adequate tension in the belt 31, there is a
belt tightener comprising an arm 43 pivotally mounted
on the frame 25 by a pivot screw 44 and carrying at its
free end a belt engaging roller 45. A spring 46 mounted
comprises a reciprocating needle bar 9 mounted in the
on a stud 47 that is threaded into the frame 25 and acts
head 4 and carrying a needle 10 that penetrates the throat
plate 6 and cooperates beneath the same with a rotary 55 between the head 48 of the stud and the arm 43 resilient
hook 11 in the formation of lock stitches. The hook 11
is mounted upon a hook shaft 12 journalled in the bed 1
and driven from the main shaft 7.
Journaled longitudinally in the rear of the bed 1 by
end bearings 13 and 14 is ‘a feed shaft 15 upon which is
loosely mounted a sleeve 16. Oscillation is imparted to
the sleeve 16 by a conventional feed actuating mechanism
which comprises a pitman 17 pivotally connected at its
lower end to the end of a crank 18 and having at its
upper end a fork 19 that embraces an adjustable eccen
tric 20 on the main shaft 7. Intermediate its ends, the
pitman 17 is pivotally connected to one end of a con
ly biases the roller 45 against the belt.
Numerous alterations of the structure herein disclosed
will suggest themselves to those skilled in the art. How
ever, it is to be understood that the present disclosure
relates to a preferred embodiment of our invention which
is for the purposes of illustration only and not to be
construed as a limitation of the invention.
All such
modi?cations which do not depart from the spirit of the
invention are intended to be included within the scope of
65 the appended claims.
Having thus set forth the nature of this invention, what
We claim herein is:
1. In a sewing machine having a bed including a bed
necting link 21 that is connected at its other end to the
plate de?ning a work supporting surface, a feed shaft‘
free end of an anchor link 22 pivotally mounted in the
70 journaled in said bed on an axis parallel to said work
standard 2. The eccentric 20 imparts oscillation to the
supporting surface, means for imparting intermittent one
pitman 17 which is converted to endwise movement by
way rotation to said feed shaft, an arm pivotally mounted
3,089,446
3
4
on and depending from said feed shaft, a frame secured
upon turning said adjusting screw, a feed wheel jour
to said arm for linear adjustment in a direction parallel
naled in said frame and including a work engaging feed
to said work supporting surface and perpendicular to the
ing surface and a sprocket, a sprocket mounted on said
axis of said feed shaft, an adjusting screw mounted in
feed shaft, a belt entrained about said sprockets for im
said bed, means for connecting said adjusting screw to
parting rotation to said feed wheel upon rotation of said
said frame for pivoting said frame about the axis of said
feed shaft, said feed wheel having an opening axially
feed shaft upon turning said adjusting screw and compris
thereof, and a rotary hook journaled in said bed for ro
ing a bracket secured to said frame and having an open
tation about an axis parallel to the axis of said feed shaft
ended slot disposed in the direction of linear adjustment
and a peripheral groove in said adjusting screw defining a 10 and disposed relative to said feed wheel for accessibility
through the axial opening in said feed wheel.
reduced diameter portion that is received within the slot,
a feed wheel journaled in said frame and including a
References Cited in the file of this patent
work engaging feeding surface and a sprocket, a sprocket
UNITED STATES PATENTS
secured in said feed shaft, and a belt entrained about said
sprockets for imparting rotation to said feed wheel upon
31,805
Hicks ______________ __ Mar. 26, 1861
rotation of said feed shaft.
1,414,625
Corrall et a1 ___________ _._ May 2, 1922
2. In a sewing machine having a bed including a bed
1,488,234
Diehl et al. __________ _.. Mar. 25, 1924
plate de?ning a work supporting surface, a feed shaft
1,644,544
Ringe ________________ _- Oct. 4, 1927
journaled in said bed on an axis parallel to said work sup
2,398,652
Le Visconte __________ __ Apr. 16, 1946
porting surface, means for imparting intermittent one
2,518,987
Hacklander __________ __ Aug. 15, 1950
way rotation to said feed shaft, an arm pivotally mounted
on and depending from said feed shaft, a frame secured
FOREIGN PATENTS
to said arm, an adjusting screw mounted in said bed,
44,074
Germany
_____________ __ Aug. 7, 1888
means for connecting said adjusting screw to said frame
850,381
Germany ____________ _. Sept. 25, 1952
for pivoting said frame about the axis of said feed shaft
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