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Dec» 10, 1946- _
2,412,456
vs..1.‘|-iA|\f1L.|a-r-r, JR
BOBBIN WINDER FOR SEWING MACHINES
5 sheets-sheet 1
` Filed April l0, 1944
INV-ENTOK
«5m/YE Y JÍHAML .ern/fe.
-
Arme/YE Ys
_
ì Dec. 10, 1946.
S_ ¿_ HAMLETT, JR
2,412,456
BOBBIN WINDER FOR SEWING MACHINES
Filed April 1o, 1944
`
s sheets-sheet 2
BY
y.
,4r-Mews Ys
2,412,456
3
4
as is well understood in the art. The sewing
mechanism per se forms no part of the present
the cover or door 21 to open position and holds
invention and may be of any conventional con
struction. Suñice it to say that the conventional
sewing mechanism shown includes a main or
needle bar shaft rotatably supported in the upper
horizontal portion of the gooseneck B, and a main
connecting assembly and a feed actuating mecha
nism for operatively connecting the main shaft
with the sewing mechanism located underneath
the bed plate A.
In the embodiment shown, the sewing mech
anism is actuated by an electric driving motor
I3 mounted on .the underside of the bedplate A
and operatively connected to the main shaft I0
by means including a V-belt drive, designated
generally by the reference character C. The par
ticular drive employed forms no part of the pres
ent invention but is preferably that disclosed
and claimed in my aforesaid application. The
driving motor I3, as shown, is operatively con
nected by a flexible shaft I4 of commercial con
struction, to a shaft I5 rotatably supported in a
bracket I5 projecting from the underside of the
the same open. Any suitable means may be ern
lployed for normally holding the cover or door 21
in position »to close the aperture 26. The bracket
E comprises two downwardly extending flanges
34, 35 and the pintle pin 32 is fixed in suitably
aligned apertures therein. The screw 22, pre
viously referred to, is fixed to the smaller rear
flange 35.
The bobbin Winder assembly D is continuously
urged in a counterclockwise direction, as viewed
in Fig. 2, by a coil spring 35, surrounding the
hub 31 of the member 20, opposite ends 40 and 4I
of which spring engage ‘the underside of the
bracket E and a horizontally extending projec
tion 42 on the member 2 I. The member 20 is con
tinuously urged in a clockwise direction, as Viewed
in Fig. 2, with respect to the member 2l by a coil
spring 43, opposite ends 44 and 45 of Which spring
engage the members 20 and 2l respectively. How
ever, relative movement between ythe members 20
and 2| in a clockwise direction, as viewed in Fig.
2, under -the action of the spring 43 is limited by
the horizontal projection 42 previously referred
bedplate A. The driving pulley I1 of the V-belt
- to. In the embodiment shown, relative movement
drive C is keyed or otherwise suitably ñxed to the
shaft I5, the projecting right hand end of which
between .the members 20 and 2I in the opposite
direction, that is, counterclockwise as viewed in
is provided with a friction wheel I8.
Generally speaking, the bobbin winding mech
anism of the present invention comprises a bob
bin Winder assembly enclosed or adapted to be
enclosed within a sewing machine .and including
two members having limited relative movement
with respect to each other pivotally connected or
adapted to be pivotally connected to a stationary '
Ápart of the sewing machine in such a manner that
a driven element connected to .a bobbin carrying
spindle may be moved into and out of driven
engagement with a movable element of the sew
' Fig. 2, is limited by an irregularly-shaped arm
or member 46 formed integral with the right hand
end of the member 2l. The arm 46 projects to
the right above the end of .the member Z0. The
members 20 and 2| are so constructed as to per
mit a limited movement of the member 20 rela
tive to the member 2l between the stops 42 and
46. The highest part of the arm 46 forms an
abutment for the bobbin Winder assembly D when
the aperture 26 is closed by the cover 21, as will
be hereinafter more specifically described.
While a bobbin is being wound the bobbin
ing machine, in combination with resilient means -lU Winder assembly D is held in the position shown
in Fig. 2, with the driven friction Wheel 24 in en
for continuously urging the driven element carry
ing member of the bobbin Winder assembly with
respect to the other of the first named members
gagement with the driving member or wheel I8,
by a latch designated generally by .the reference
in a direction to engage the driven element With
’ character G, which latch is pivotally connected to
the flange 34 by a screw 41 and comprises a pro
its driving element and resilient means controlled
jection 48 adapted to engage over a pin 50 formed
by the amount of thread on the bobbin being
integral with the member 2| of the bobbin Winder
Wound for moving the driven element out of con
assembly D. The latch G is continuously urged
tact with its driving element.
Referring to the embodiment shown in Figs. 1
in a counterclockwise direction, as viewed in Fig.
to 4, inclusive, of the drawings, the bobbin Winder 50 2, to engage the projection 48 over the pin 50,
by a tension spring 5I connected to an arm 52
assembly is designated generally by the reference
thereof and to a pin 53 projecting inwardly from
character D and comprises the two relatively
the flange 34. In addition to the parts previously
movable members 2B and 2| pivotally connected `
mentioned, the latch G comprises an elongated
by a screw 22 to a bracket E detachably secured
to the underside of the bedplate A. The free end » arm 54 the intermediate portion of which extends
between the ñanges of -the bobbin F and is adapt
of the member 20 is provided with a transversely
ed to be moved radially of the bobbin by thread
extending shaft 23, the rear end of which, as
viewed in Figs. 1 and 2 is provided with a driven _
wound thereon.
The construction is such that the latch G is
friction wheel 24 adapted to engage the driving
friction wheel I8 previously referred to. The op 60 so moved by the engagement of the elongated
arm 54 with the thread being wound on the bob
posite or front end 25 of the shaft 23 is hollow
bin that the projection 48 is disengaged from
and split longitudinally vto form a resilient spindle
the pin 5D, and the Winder assembly D thereby
adapted to receive a bobbin F. Both of the mem
released when a predetermined amount of thread
bers 20 and 2| are irregular in shape and the
member 20 is provided with approximately a right
has been wound upon the bobbin. Upon being
released from the latch G, the Winder assembly
angle bend intermediate the ends thereof, the
construction being such that as the Winder as
sembly is rotated about Ithe screw 22 as a pivot,
D moves into the dot-dash line position shown
in Fig. 2 under the action of the spring 35. Move
the free end thereof and, in turn, the spindle 23
ment of the Winder assembly D under the action
upon which the bobbin to be wound is mounted 70 of the spring 36 is limited by the engagement
is moved into and out of an aperture 23, in the
of a projection 55 on the member 2l with the
bedplate A, which aperture is adapted .to be nor
underside of the bed plate A. Alternately, the
mally closed by a cover or door 21 hinged as by
projection 55 may engage the bracket E.
the arms 33, 3| and a pintle pin 32 to the bracket
Because of the lost motion connection, in
E. A spring 33 encircling the pintle pin 32 moves
cluding the spring 43, between the members 2€]
2,412,456
6
5
and 2| of the bobbin Winder assembly D, the
friction wheel 24 is yieldably engaged with the
driving member I8 when the Winder assembly
is latched in the positionY shown in Fig, 2. At
tention is called to the fact that the springs 35
and 43 both encircle the pivot upon which the
members 26 and 2| are rotatably suppo-rted. This
the Winder assembly D, whereupon the Winder
assembly will move in a counterclockwise direc
tion until the arm 4c strikes the underside of
the cover 21.
The bobbin Winder of the present invention is
shown in Figs. 1 to 4, inclusive, as located un
derneath the bed plate of a sewing machine, how
ever, it is to be understood that the bobbin Winder
arrangement provides a simple and compact
of the present invention may be located at other
construction,
When the device is not in use, it is housed un 10 convenient places about the machine, for ex
ample, in either the column or the horizontal arm
derneath the bed plate A and in order to elim
of the gooseneck.
inate any possibility of the friction wheels I8
An embodiment of the invention showing the
and 24 being in contact with each other when
bobbin Winder in the horizontal arm or portion
the cover 21 is closed, the projecting end 55 of
of the goose neck of a sewing machine is shown
the elongated arm 54 of the latch G is adapted
in Figs. 5, 6 and ‘1. Referring to these figures,
to be depressed suiiiciently tc hold the projec
the bobbin Winder proper is located Within an
tion 48 of the latch G clear of the pin 50 upon
aperture formed in the top of the gooseneck B’;
the closing of the cover 21 by a rod 51 slidably
which aperture is adapted to be closed by a door
supported in vertically spaced projections 60 and
6| formed integral with the iiange 34. The lower 20 or cover 18 hinged at its rear to the frame
proper. In this embodiment the bob'bin Winder
end of the rod 51 is adapted to engage the upper
surface of the end of the arm 54 and the upper
end thereof is provided with a head 62 adapted
to be engaged by the under side of a cover 21 as
the cover is moved into closed position. The rod
51 is continuously urged in an upward direc
tion by a coil spring 63 surrounding the same
and interposed between the upper side of the
projection 6I and a collar 64 fixed to the rod
51 below the projection 59. When the cover 21
is closed the rod 51 is depressed and the latch G
held in inoperative position, as previously stated.
assembly D', comprising the relatively movable
co-axially pivoted arms or members |20 and |2|,
is pivotally connected by a screw I 22 to a bracket
E' fixed to a web 1I formed integral with the
gooseneck B’ of a sewing machine head in such
a way that the driven friction wheel |24 fixed
to the bobbin carrying spindle |23 rotatably sup
ported in the free end of the member |20 is
adapted to be engage-d with and disengaged from
a driving friction wheel ||8 carried by the main
shaft llil' of the sewing machine. Alternatively,
At this time the highest portion of the arm 46
engages‘the underside of the cover 21 and the
various parts are in the position shown in Fig. 1.
the friction wheel |24 may contact some other
A projecting member 65 on the underside of the
cover 21 and provided with an aperture 56 forms
a ‘guide for thread being wound upon the bob‘bin.
It is believed that the operation of the device
ly urged in a counterclockwise direction as viewed
rotatable part of the sewing machine.
'I'he bobbin Winder assembly D’ is continuous
in Fig. 6 to project the bobbin carrying spindle
|23 thereof above the arm B’ by a coil spring
|36 encircling the hub of the member Hill, oppo
will be apparent from the foregoing description 40 site ends |40, |4| of which spring are connected
to the bracket E’ and the member |2|, respec~
thereof, Sufñce it to say that when the .cover
tively. Movement of the member |20 relative
21 is released it moves into open position, that
is, into the position shown in Fig. 2, whereupon
to the member |2| is limited by iianges |42, |46,
formed integral With the member 12| and pro
the Winder assembly D moves to loading posi
tion which is the position shown in dot-dash lines 45 jecting below and above the arm or member |29.
The space between the projections |42, |46, is
in Fig. 2. It will be observed that the bobbin re
ceiving spindle of the bobbin Winder assembly
slightly greater than the height of the arm |29,
is above the bed plate A and without the hous
ing of the sewing machine proper; in other Words,
permitting a slight relative movement between
the members |28 and |2|. The member |20 is
continuously urged in a counterclockwise direc
tion as viewed in Fig. '1 with respect to the mem
ber |2| by a coil spring |43 also surrounding
the hub of the member |20, opposite ends |44,
|45 of which are connected to the member IZB
and the underside of the member I2I, respec
tively. The screw |22 which forms the pivot for
the bobbin Winder assembly D' is iixed in a flange
|35 formed integral with the bracket E’. The
flange |35 also includes an inwardly extending
the spindle is so positioned that a bobbin can be ~.
readily attached to or detached from the bobbin
carrying portion 25 of the spindle 23. After the
bobbin has been positioned upon the end 25 of
the spindle 23, the assembly is manually moved
in a clockwise direction about the pivot 22 until
the projection 48 of the latch G engages over
the pin 5H on the member 2 I. This movement of
the bobbin Winder assembly D moves the friction
wheel 24 into engagement with the driving mem~
bei` I8. The motor I5, if not already in opern
ation, is then started.
’
When a predetermined amount of thread has
been Wound on the bobbin Fthe pin 59 is auto
matically released from the latch G, whereupon
the bobbin Winder assembly D Will move to the
position shown in dot-dash lines in Fig 2 under
the action of the spring 36. The Wound bobbin
is then removed, whereupon the cover or door 21
can :be closed. |As the door 21 closes, the bobbin
Winder assembly D is moved to the position
projection 12 adapted to be engaged by the arm
|20 to limit the rotation of the assembly D’ in
a counterclockwise direction as viewed in Fig._6.
For the purpose of winding a bobbin, the Wind
er assembly D’ is held in the position shown in
full lines in Fig. 6, With the driven friction wheel
|24 in engagement with the driving wheel | I 8
by a latch Gr', similar in construction to the'latch
G previously referred to, and comprising a pro
jection |48 adapted to engage over a pin I 50 ñXed
2to the member |2I. The latch G’ is pivotally
If for some reason the bobbin
connected to an upstanding ñange |34 on the
Winder assembly D happens to be in the position
shown in full lines in Fig. 2, When the door 21
is closed, the engagement of the head V|52 of the
bracket E’ by a headed pin |41 and is continu
ously urged in a counterclockwise direction as
viewed in Fig. 6 by a vertically positioned tension
pin 51 therewith Will move the latch G to releaseV
spring |5| connected to an arm |52 thereof and
shown in Fig. 1.
2,412,456
7
to the bracket E’. The latch G' is also provided
with a forwardly extending arm |54 adapted to
extend between the flanges of a bobbin F’ posi
tioned on the bobbin receiving end |25 of the
spindle |23 and engage thread wrapped’upon the >
bobbin and be moved thereby.
'The thread guide 'I3 ñxed to the underside of
the cover l0 serves the same function as the
rod 5'| in the embodiment shown in Figs. l to 4,
inclusive, and is so constructed that when the
cover 'l0 is closed, the lower end thereof engages
the projecting arm |54 of the latch G’ and holds
the latter in an inoperative position, thus elimi
nating any possibility of the friction Wheels ||8
and |24 being in contact When the cover-is closed.
The friction Wheels H8 and |24 are small metal
hubs provided with rubber tires, whereas the
friction wheels shown in Figs. 1 to 4, inclusive,
are_cone-shaped or beveled wheels, however, it
8
adapted to have a bobbin detachably secured
thereto, means for rotatably supporting said
shaft in said movable member, and a driven ele»
ment ñxed to said shaft and adapted to be moved
into and out of driven engagement with said
movable element; means for movably supporting
said bobbin Winder assembly underneath said bed
plate for movement of said shaft to a position
beneath the bed plate with said driven element
in operative engagement with said movable ele
ment or outwardly through said aperture to a
position above said bed plate where itis accessible
to have a bobbin removed therefrom or placed
thereon; and a movable cover for said aperture
which when in closed position maintains said
shaft below said bed plate.
2. In a sewing machine, the combination of : a
bed plate having an aperture therein; sewing
mechanism including a movable element located
is to be understood that any suitable type of fric- . underneath said bed plate, a bobbin Winder as
sembly comprising a movable member, a shaft
tion Wheell may be employed.
adapted to have a bobbin detachably secured
The operation of the device shown in Figs.
thereto, means for rotatably supporting said
5, 6, and 7 is as follows: When it is desired to
shaft in said movable member, and a driven ele
wind a bobbin the cover 'IU is raised to the posi
ment fixed to said shaft and adapted to be moved
tion shown in Fig. 7. Prior to the raising of
into and out of driven engagement with said
the cover ld, the bobbin Winder assembly D’ is
movable element; means for pivotally supporting
in the lower dot-dash line position shown in Fig.
said bobbin Winder assembly underneath said bed
'7, With the top of the wheel |26 engaging the
plate for movement of said shaft to a position be
underside of the cover '15. When the cover 'i6
neath the bed plate With said driven element in
is raised, the assembly moves to the upper dot
operative engagement with said movable element
dash line position shown in Fig. 7 under the ac
or outwardly through said aperture to a position
tion of the spring |35. While the assembly is
above said bed plate where it is accessible to have
in its raised or upper position, the bobbin to be
a bobbin removed therefrom or placed thereon;
wound is placed on the bobbin-receiving portion
|25 of the spindle |23. After the end of the Cl: Ul and a movable cover for said aperture which
when in closed position maintains said shaft be
thread is secured to the bobbin, the bobbin Winder
low said bed plate.
assembly D’ is manually moved in a downward
3. In a sewing machine, the combination of: a
direction until the pin |59 is engaged by the
bed plate having an aperture therein, sewing
latch G', which is the position shown in Fig. '7,
mechanism including a rotatable element located
with the friction wheels H3, |24 in contact with
underneath said bed plate; a bobbin Winder as
each other. When the bobbin is placed on the
sembly comprising a movable member, a shaft
spindle |23, the projecting arm |54 of the latch
adapted to have a bobbin detachably secured
G’ is positioned between the flanges thereof and
thereto, means for rotatably supporting said
after a predetermined amount of thread is wound
shaft in said movable member, and a driven ele
upon the bobbin, the latch G’ is moved clear
ment ñxed to said shaft and adapted to be moved
of the pin |50, whereupon the bobbin Winder
into and out of driven engagement With said
assembly automatically moves to the upper dot
dash line position shown in Fig. '7. After the
rotatable element; means for pivotally support
bobbin is removed, the cover 'l0 is again closed.
ing said bobbin Winder assembly underneath said
From the foregoing disclosure of the invention
bed plate for movement about a horizontal axis
whereby said shaft may be moved to a position
and the description of the preferred embodiments
shown, it will be apparent that the objects here
beneath the bed plate with said driven element
tofore enumerated and others have been accom
in operative engagement with said rotatable ele
plished and that a new and improved bobbin
mentor outwardly through said aperture to a
Winder for sewing machines has been provided
position above said bed plate Where it is accessible
as Well as a new and improved sewing machine.
Two preferred embodiments of the invention
have been illustrated and described with consid
to have a bobbin removed therefrom or placed
thereon; and a movable cover for said aperture
which when in closed position maintains said
shaft below said bed plate.
v erable detail, however, the invention may be other
Wise embodied and numerous changes may be 60
4. In a sewing machine, the combination of: a
made in the construction shown within the scope
bed plate having an aperture therein; a movable
of the invention, and it is to be understood that
cover for said aperture; sewing mechanism in
I do not wish to be limited to the particular em
cluding a movable element located underneath
bodiments or constructions shown, but it is my
said bed plate; a bobbin Winder assembly com
intension to hereby cover all adaptations, modi 65 prising two relatively movable members, a shaft
fications and uses of the devices shown which
adapted to have a bobbin detachably secured
come within the practice of those skilled in the
thereto, means for rotatably supporting said
art to which the invention relates and Within the
shaft in one of said members, a driven element
spirit and scope of the appended claims.
fixed to said shaft and adapted to be moved into
Having thus described my invention I_ claim: 70 and out of driven engagement with said movable
1. In a sewing machine, the combination of: a
element, and means including a lost motion op
bed plate having an aperture therein, sewing
erative connection between said members; means
mechanism including a movable element located
for pivotally supporting said bobbin Winder as
underneath said bed plate; a bobbin Winder as
sembly underneath said bed plate; resilient
sembly comprising a movable member, a shaft 75 means continuously urging said bobbin Winder
2,412,456
10
said aperture and said driven element away from
said movable element; movable means for hold
ing said bobbin Winder assembly against the ac
assembly in a direction to move said shaft out
wardly through said aperture and said driven ele
ment away from said movable element; said cover
when in closed position maintaining said assem
tion of said second named resilient means in a
position in which said driven element engages
and is driven by said movable element; means
controlled by the amount of thread on a bobbin
supported on said shaft for moving said movable
driven element in a direction towards said mov
means to release said bobbin Winder assembly;
able element; movable means mounted inde
pendently of said members for holding said bob 10 and means operatively connected to said cover
for moving said movable means to releasing posi
bin Winder assembly against the action of said
tion when said cover is moved to close said
first named resilient means in a position in which
aperture.
v
said driven element engages and is driven by said
7. In a sewing machine, in combination, a
movable element; and means controlled by the
frame member having an aperture therein, a
amount of thread on a bobbin supported on said
movable cover for closing said aperture, sewing
shaft for moving said movable means to release
mechanism including a moving driving part lo
said bobbin winder assembly to move said shaft
cated within said frame member; a bobbin Wind
when said cover is in open position outwardly of
ing device comprising a pair of members, means
said aperture to a position accessible for remov
secured to said frame member for coaxially sup-_
ing the wound bobbin therefrom and placing an
porting said pair of members for rocking move
empty bobbin thereon.
ment from one side of said aperture to the other
5. In a sewing machine, the combination of : a
side thereof, means forming a lost motion oper
bed plate having an aperture therein; a movable
ative connection between said rocking members,
cover for said aperture; sewing mechanism in
a shaft rotatably supported by one of said rock
cluding a rotatable element located underneath
ing members and adapted to have a bobbin de
said bed plate; a bobbin Winder assembly com
tachably secured thereto, a driven element fixed
prising two relatively rookable members, a shaft
to said shaft and engageable with said driving
adapted to have a bobbin detachably secured
bly beneath said bed plate, said bobbin Winder
assembly comprising resilient means interposed
between said members for yieldably urging said
5
thereto, means for rotatably supporting said
part, resilient means yieldingly urging said one
shaft in one of said members, a driven element '
rockable member in a direction to engage said
element with said driving part, a separate resil
ient means urging the other of said rocking mem
bers in a direction to disengage said element from
said movable part and to move said rocking mem
fixed to said shaft and adapted to be moved into
and out of driven engagement with said rotatable
element, and means comprising a lost motion op
erative connection between said members and in
cluding resilient means interposed between said
members for yieldably urging said driven element
in a direction towards said rotatable element of
said sewing mechanism; means for pivotally sup
porting said bobbin Winder assembly underneath
said bed plate; resilient means for continuously
urging said bobbin Winder assembly in a direc
tion to move said shaft outwardly through said
aperture and said driven element away from said
rotatable element; movable means for holding
said bobbin Winder assembly against the action 45
of said last named resilient means in a position
in which said driven element engages said rotat
bers in one direction through said aperture, latch
means for holding said other rockable member
against movement by said separate resilient
means, and means controlled by the amount of
thread on the bobbin Ifor releasing said latch
means; and cooperating means operatively asso
ciating said cover and said latch releasing means
when the cover is in aperture closing position to
maintain said releasing means in latch released
position.
8. In a sewing machine, in combination, a
gooseneck having an aperture in the horizontal
arm thereof and a cavity underlying said aper
able element of said sewing mechanism; means
ture, a movable cover for closing said aperture,
controlled by the amount of thread on a bobbin
sewing mechanism including a moving driving
supported on said shaft for moving said movable 50 part located within said horizontal arm; a bobbin
means te release said bobbin Winder assembly;
winding device comprising a pair of members,
and 4means operatively connected to said cover
for actuating said movable means in a direction>
means secured to said horizontal arm in the cav
ity thereof and coaxially supporting said mem
to release said bobbin Winder assembly when said
bers for rocking movement, means forming a lost
cover is moved to close said aperture.
55 motion operative connection between said rock
6. In a sewing machine, the combination of: a
ing members, a shaft rotatably supported by one
bed plate having an aperture therein; a movable
of said rocking members and adapted to have a
cover for said aperture; sewing mechanism in
bobbin detachably secured thereto, a driven ele
cluding a movable element located underneath
ment fixed to said shaft and adapted to engage
said bed plate; a bobbin Winder assembly com 60 and be driven by said movable part, resilient
prising two relatively rockable members; a shaft
means yieldingly urging said one member in a
adapted to have a bobbin detachablyl secured
direction to engage said element With said mov
thereto, means for rotatably supporting said
able part, a separate resilient means urging the
shaft in one or" said members, a driven element
other of said rocking members in a direction to
ñxed to said shaft and adapted to be moved into 65 disengage said element from said movable part
and out of driven engagement with said movable
and move both of said members through said
element, and means comprising a lost motion op
aperture, latch means for holding said members
erative connection between said members and
against movement by said resilient means, and
including resilient means urging said driven ele
means controlled by the amount of thread 0n the
ment in a direction towards said movable element 70 bobbin for releasing said latch means; said cover
of said sewing mechanism; means for pivotally
being provided with a depending portion coop
supporting said bobbin Winder assembly under
erating with said latch releasing means- when the
neath said bed plate; resilient means continu
cover is in aperture closing position to maintain
ously urging said bobbin Winder assembly in a
said releasing means in latch released position.
direction to move said shaft outwardly through 75
SIDNEY J. HAMLE'I‘T, JR.
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