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Патент USA US2133700

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Oct. 18, 1938;7
G. L. HlNMAN
NARROW HEMMER ATTACHMENT FOR SEWING MACHINES
Filed Oct. '7,- 1936
2,133,700
Patented Oct. 1.8, 1938
2,133,100
UNITED vSTATES
PATENT oil-‘Fics
y 2,133,700
NARROW HEMMER. ATTACHMENT FOR
SEWING MACHINES
George L. Hînman, New Haven, -Conn., assignor
to The Greist Manufacturing Company, New
Haven, Conn., a corporation of ,Connecticut
Application October 7, 1936,> SerialNo. 104,431
5 Claims. (Cl. 112-143)
This invention relates to attachments for
household vsewing machines, and more particu
larly to an attachment designed to make a hem at
the edge of a piece of material. In the particu
5 lar modification of the invention illustrated in
the drawing, the attachment is designed Ito make
a relatively narrow hem, although it will be un
derstood that the principles of the invention may
be applied to devices for making hems of different
l0 widths.
'
In devices of this character, and particularly
in the ñeld of so-called “narrow” hemmers,lsome
difficulty has been encountered in sewing or
stitching the hem at the proper place to bind it
l5 to the piece of material; that is, particularly in
making a narrow hem upon the piece of goods, it
sometimes occurs that the line of stitching will
“run off” the hem entirely, so that the latter will
not be stitched in place. 'I'his is often due to the
¿"7 fact that the presser bar of the sewing machine
with which the attachment is used is not cor
rectly lined up with the needle bar, and in many
cases where the alignment of these two parts is'
correct when the machine is ñrst used, the press
‘25 er bar becomes displaced or moved out of align
ment in the use of the machine, so that when the
attachment is secured to such a displaced presser
bar, the material will not be fed properly to the
needle to bring the line of stitching properly upon
ff" the hem. It will be noted that, as the point of
attachment to the presser bar is at a considerable
distance from the point at which the hem is
turned, a slight displacementl of the presser bar
Will effect a considerable displacement of the at
.’ìï- tachment at the point where the hem is turned.
One object of the present invention, therefore,
In the accompanying drawing:
Fig. 1 is a perspective view of a hemmer at
tachment for sewing machines embodying my im
provements;
»
-
»
Fig. 2 is a plan view of the attachment;
J
5
Fig. 3 is a View similar to Fig. 2 showing the
parts in an adjusted position; and »
.
Fig. 4 is a sectional view Online 4_4 of Fig. 2.
To illustrate a preferred embodiment of my
invention I have shown a hemmer attachment l0
comprising an attaching member or shank i0
having means comprising a bifurcated, laterally
turned portion I I adapted to be secured to the
presser bar (not shown) of the sewing machine,
and a forwardly extending portion I2. ITo the ll
portion I2 of the attaching member is pivotally
secured a foot I3 by the rivet I4. This rivet also
passes through one end of a relatively thin sheet
metal plate I5, which overlies the foot I3 and the`
inner end of which extends between the members 20
I2 and I3.
Below the head of the rivet I4 is a
spring washer I6 designated to hold the parts
against play in operation, but at the same time
permitting movement ofthe foot I3 and plate I5
relatively to the part I2 about the rivet for a pur- 25
pose to be hereinafter explained.
,
The plate I5 is slotted as at I‘I, and one arm
of the plate is provided with a rearwardly point
ing tongue I8 disposed within this slot.- The
other arm I9 of the plate I5 extends forwardly 30
over a corresponding part of the footV I3 (which,
as will be understood, is also provided with a slot
registering with the slot I 1) . and is provided with
a downturned end 20 which bears against the
edge of the material to serve as a guide to the 35
cloth to guide the latter properly to the hem
is the provision of a hemmer attachment for
turning mechanism, hereinafter described. Be
sewing machines so constructed that it is capable
of adjustment to bring the line of stitching or
tween this arm I9 and the underlying arm of the
foot I3 is secured the base portion 2I of a scroll
'l 0 sewing upon the proper place on the ñnished hem.
Another object of the invention is the provi
sion of a hemmer attachment for sewing machines
which is capable of a lateral adjustment to in
sure the proper feeding of the hem to the sewing
‘I 5 machine needle, and one in which said adjustment
may be quickly and easily made without remov
ing the attachment from the machine.` »
A still further object of the invention is the
provision of a hemmer attachment of the charac
5'1‘» ter described, which may be of simple and eco
nomical construction and which, at the same
time, will be efficient and positive in operation.v
To these and other ends the invention consists
in the novel features and combinations of parts
to be hereinafter described and claimed.
member 22, the scroll member being spirally 40
formed at its end and extending within the slot
I'I to embrace the tongue I8, and serving to turn
the cloth about the tongue IB to form the hem
and guide the hem to the sewing machine needle.
The plate I5 and underlying foot I3 are pro- 45
vided with registering slots, illustrated at 23,
within which operates the needle of the machine
in the usual manner. As shown in Fig. 4, a pin
24 is secured to the parts I3 and I5 in a position
spaced laterally from the rivet I4, the head 24a of 50
this pin standing in an opening 25 in the later
ally extending portion I2 of the attaching mem
ber I0. The opening 25 is substantially larger
than the head 2494 of the pin, so that a pivotal
movement of the parts I3 and I5 about the rivet 55
2
2,133,700
Il will be possible within limits permitted by the
engagement of the pin head 24m with the walls
of the opening 25.
In Fig. 2 of the drawing, the foot and the parts
of the hemmer carried thereby are shown in an
1. A hemmer attachment for sewing machines
comprising a shank having a horizontally dis
posed portion, a foot member pivotally secured
to the lower face of said portion for pivotal move
ment with respect thereto, hem-turning mecha
intermediate position in substantial alignment
with the part I2, in which position the pin head
24*L is substantially centered in the opening 25.
nism carried by said foot member, said mecha
nism including a plate portionv extending be
It will be understood that in the usual type of
sewing machine the material enters the hemmer
from the left-hand side, as shown in this figure,
the feed, of course, being longitudinally of the
secured to the foot member.
2. A hemmer attachment for sewing machines
comprising a shank having a horizontally dis
posed portion, a foot member, means for pivotally
securing said member to the lower face of said
device, or from the bottom to the top, as here
illustrated. If it is found that the stitch is running
f' off the hem so that the latter is not sewed in
place, the foot I3, with associated parts, may be
swung to the left, or from the position shown in
Fig. 2 to the position shown in full lines in Fig. 3,
which will in effect move the line of stitching
toward the right with relation to the hem, or
closer to the edge of the goods, if, however, it
is found that the stitching is too close to the edge
of the goods when the device is set as shown in
Fig. 2, and not close enough to the edge of the
hem, the foot may be moved to the right, orto
the dotted line position shown-in Fig. 3, which
will have the effect of moving the line of stitching
closer to the edge of the hem. It will also be true
that moving the foot from ,the full line to the
§ dotted line positions in Fig. 3 will have the effect
of making a slightly wider hem so that, while
the present device is not primarily an adjustable
hemmer, that is, adjustable for hems of various
widths, it is capable of such an adjustment within
certain limits by moving the hem-forming mech
anism from the full to the dotted line position
shown in Fig. 3 of the drawing, or vice versa.
It will be obvious that there is provided by the
invention illustrated a very simple and inexpen
40 'sive hemmer attachment, which is Vcapable of
being adjusted to effect the line of stitching at
the proper place upon the hem, and also ca
pable of being adjusted to effect a variation within
limits of the width of the hem secured.
While I have shown and described a preferred
45 embodiment
of my invention, it will be under
stood that vit is not to be limited to all of the
details shown, but is capable of modification and
variation within the spirit of the invention and
z within the scope of the appended claims.
What I claim is:
tween said shank and foot members and there
portion for pivotal movement with respect
thereto, hem-turning mechanism carried by said
foot member, said mechanism including a plate
portion extending between said shank and foot
members and secured to the latter by said pivotal
securing means.
3. In a sewing machine, a foot, a hem-turning 20
mechanism carried by said foot, means for at
taching said foot to a sewing machine, means
pivotally securing the foot to said attaching
means for pivotal movement relatively thereto,
means'for limiting the relative movement of said 25
parts, and said securing means and said limiting
means also serving to secure a part of said hem
turning mechanism to said foot.
4. A hemmer attachment for sewing machines
comprising a shank member adapted to be at 30
tached to the presser bar of a sewing machine
and having a horizontally disposed portion at
its lower end, a foot member pivotally secured
to said portion, hem-turning mechanism carried
by said foot member, said mechanism comprising
a relatively thin sheet metal plate secured to the
foot member and projecting forwardly there
from and carrying hem-turning mechanism on
its forward end.
5. A hemming attachment for sewing ma 40
chines comprising a foot part, a shank adapted to
be secured to the presser bar of a sewing machine,
means for pivotally attaching said foot part to
said shank, a member secured to said foot part
and extending forwardly therefrom, a hem-turn
ing mechanism on the extended end of said mem
ber whereby said hem-turning mechanism is
pivotally adjustable relative to the presserl bar
to vary the width of the formed hem.
GEORGE L. HINMAN.
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