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Патент USA US2112186

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Match 22, 1938.
_J_ Q wlLLlAMS
2,112,186
EMBROIDERY MACHINE
Filed July 9, 1957
lNVENTOR
JAMES
7
C. WiLLlAMS
BY HIS ATTORNEYS
Patented Mar. 22, 1938
2,112,186
irsn stares PATENT’ ()FFICE
2,112,186
EMBROIDERY MACHINE
James C. Williams, Johnson City, Tenn., as
' signer of'one-half to R. Blair Cannon, Chat
tanooga, Tenn.
_v
Application July 9, 1937, Serial No. 152,820
,
14 Claims.
This invention relates to machines for apply
5
ing designs to woven materials, such as bed
spreads and like materials on which it is desired
to embroider a design. More particularly, this
invention relates to machines for embroidering
designs, which machines are movable by hand
and‘ preferably are operated by power delivered
to'the machine through a ?exible shaft.
It is another object of my invention to provide
a light portableembroidery machine which is
simple but rugged in construction and inrwhich
the needle is'?capable of rapid and continuous
movement without excessive wear on the operat—
ing} parts.
'
'
"
Another object of my invention is .to provide an
improved driving mechanismfor needles of port
able embroidery machines in which the needle
is positively operated forward and backward.
‘Another object of my invention is to provide
20 means, in a machine of the above type, to adjust
the travel of the needle.
Another object of my invention is to provide
a novel means for feeding’ the thread through
a power-operated. embroidery machine of the
25 above type. Other objects and advantages of my
invention will become apparent as it is described
in connection with the accompanying drawing.
In the drawing—
.
Fig. l is a top plan view of an embroidery ma-.
30 chine embodying the principles of my invention.
Fig. 2 is a View of the interior of ‘the machine
shown in Figure 1, when the cover is removed.
Fig. 3 is a transverse section view taken
‘ through the machine shown in Figure 1 with the
35 section being taken along the line 3-3 of Fig. 1.
'40
(Cl. 112-80)
‘annulus is counter-balanced by a counterweight
22. Both rotate about axis a: of the shaft 14 as
the shaft turns. Both are mounted on a dia
metric arm 237secured to or formed integrally
upon the inner end of the shaft l4. Both the
counterweight and the annulus are adjustably
secured on the arm 23 by screws 25 and 2'!
respectively. The annulus has a diametric
bridge 29 with a slot 298 through which passes
the shank of the screw “27. The purpose of the 10
adjustable connection of the annuluson the arm
23 is to permit variation of the length of needle
stroke, since the annulus drives the needle, as
hereinafter more fully described.
The counter- _
weight may be secured to the arm 23 by a similar
adjustable connection or any other suitable con~
nection.
Within the cam race I8 is an arcuate cam fol
lower 24 which is rotatably mounted on aypin 26
downwardly projecting from a rectilinearly mov
able, straight-sided, needle-driving block 28.
This block is guided in‘ its movement by the side
and top walls 305, 3B‘), and 39° of an inverted
channel-shaped guide member 30. This guide
member‘is secured in diametrical position to a
disc cover 32 for the housing by screws34 passing
thru ?anges 36d and 3&9 turned in opposite di~
rections from the bottom edgesof vthe walls 30*’
and 30a respectively. The cover disc 32 is, radially
slotted to permit the travel of the pin 26 as it
is moved by the cam follower 24.
Between the guide channel 30 and cover disc
32 is a guide plate 36, which is provided with a
longitudinal'slot in register with the slot in the
cover disc to permit travel of the pin 26. This
slot is preferably narrower than the distance be
tween the walls of the channels, and the block 28
Fig. 4 is a fragmentary detail, in elevation.
looking into the needle and needle guide assembly
of the machine shown in Fig. 1.
. isreduced in width at the point where it passes
Fig. 5 is a fragmentary detail showing, in trans
thru the slot, providing a shoulder 285 which
verse section,’ the cover, the needle operating rests on the surface of the guide plate 36. Thus,
block and the entrance thread guide. ‘
the needle driving block is held in the channel
Fig. 6 is a transverse section taken along line of member 36 and is guided on four sides.
6--6 of Figure 5.
'
Referring to the drawing, the housing of the
machine comprises a circulardisc it having at
itsperiphery a low cylindrical Wall .ltw and hav
ing extending’ from its center, in the opposite
direction from the cylindrical wall, a hub 12
bored centrally to form a bearing for a drive
‘shaft l4. =Thecuter end of this shaft is pro
vided with a conventional detachable connec
tion (not shown) "to a common ?exible power
shaft. It. The inner end of shaft M has attached
eccentrically thereon a circular cam race I Bin
wi.01-,‘ the form of a channel shaped annulus 20. This
Screwed into one end of the needle driving
block 28 is a thin hollow embroidery needle 44.
This needle passes thru a central bore in a needle
guide block 38 mounted in the outer end of the
channel in member an and is held therein by a
set screw 40 passing thru the side wall 308- of the
channel member 30. The embroidery thread 45
passes thru‘ the needle 45 and driving block 28
and passes out of the machine thru a thread guide
block 46 mounted on the other end of the chan
nel member 30. A set screw 48 holds this thread
guide block 46 in position.
To guide and protect the thread as it passes 55
2
2,112,186
from the thread guide block 46 to the needle
driving block 28 one end of a closely coiled ten
sion spring 50 is secured to a neck 52 on the driv
ing block 28 and extending toward the thread
guide block 45. This neck surrounds the thread
guide passage 28a in the driving block. The
other end of the spring is secured to a similar
neck 54 on the thread guide block 46.
Thus an
expansible protecting passage for the thread is
provided between the movable block 28 and sta
tionary block 46.
When operating the machine the operator
grasps the hub l2 which serves as a handle, and
slips his fore?nger thru a metal loop 60 on the
15 bracket 62 which has edges overlying and secured
upon the flanges 30d and 309 on the channel
member, adjacent the end of that member in
which the needle reciprocates.
'
From the foregoing it will be apparent that as
20 the power shaft 14 is rotated the cam race will
rotate about axis x (see Fig. 2).
But, since the
cam follower can only move rectilinearly by rea
son of its connection with needle-driving block
28 thru pin 26, the cam follower, always within
25 the cam race, moves diametrically with respect
to the cover disc 32 toward the axis a: and then
away from that axis in the same rectilinear path
as determined by the channel guide member 30.
The machine described has the advantage of
30 ease of manufacture and assembly, inexpensively
constructed parts, and relatively slow movement
of the needle at the start of its outward move
ment and rapid at the end and during the ?rst
portion of the retractive movement.
35
Many modi?cations within the scope of my
invention will occur to those skilled in the art.
Therefore I do not limit my invention to the
exact form described.
I claim:—
40
1. An embroidery machine comprising a rotat
ing shaft, a bearing sleeve for said shaft forming
a hand grip for the machine, means forming a
circular cam race mounted eccentrically on said
shaft, a cam follower in said race, a rectilinearly
movable needle-actuating block having a pivotal
connection with said cam follower, a needle
mounted in said block, a guide channel member
for said block for causing the block to move only
in a rectilinear direction, a needle guide member
in one end of said channel member, a thread
guide member in the other end of said channel
member, and an expansible thread guide pas
sage between said block and said thread guide
member.
2. An embroidery machine comprising a rotat
ing shaft, a bearing sleeve for said shaft forming
a hand grip for the machine, means forming a
circular cam race mounted eccentrically on said
shaft, a cam follower in said race, a rectilinearly
60 movable needle-actuating block having a pivotal
connection with said cam follower, a needle
mounted in said block, a guide channel member
for said block for causing the block to move only
in a rectilinear direction, a needle guide member
in one end of said channel member, a thread
guide member in the other end of said channel
member, and a closely coiled tension spring
forming an expansible thread guide passage be
70 tween said block and said thread guide member.
3. An embroidery machine comprising a rotat
ing shaft, a bearing sleeve for said shaft forming
a hand grip for the machine, a machine housing
mounted on said sleeve, means forming a circu
75 lar cam race mounted eccentrically on said shaft,
a cover upon said housing enclosing said race
forming means, a cam follower in said race, a
rectilinearly movable needle-actuating block hav
ing a pivotal connection with said cam follower
thru a slot in said cover, a needle mounted in
said block, a guide channel member for said
block for causing the block to move only in a
rectilinear direction, said channel member being
mounted on said cover in position to traverse
the axis of said shaft, a needle guide member in 10
one end of said channel member, a thread guide
member in the other end of said channel mem
ber, and an expansible thread guide passage be
tween said block and said thread guide member.
Ll. An embroidery machine comprising a rotat 15
ing shaft, a bearing sleeve for said shaft forming
a hand grip for the machine, means forming a
circular cam race mounted eccentrically on said
shaft, a cam follower in said race, a rectilinearly
movable needle-actuating block having a pivotal 20
connection with said cam follower, a needle
mounted in said block, a guide channel member
for said block for causing the block to move only
in a rectilinear direction, said channel member
being mounted in position to traverse the axis of 25
said shaft, a needle guide member in one end of
said channel member, a thread guide member
in the other end of said channel member, and an
expansible thread guide passage between said
30
block and said thread guide member.
5. An embroidery machine comprising a rotat
ing shaft, means forming a circular cam race
mounted eccentrically on said shaft, a cam fol
lower in said race, a guide channel member posi
tioned to traverse the axis of said shaft, a needle
driving block rectilinearly slidable within said
channel member and pivotally connected with
said cam follower, a needle guide member in one
end of said channel member, a thread guide
member in the other end of said channel mem
ber, and means forming an expansible thread
guiding passage between said block and said
thread guide member.
6. An embroidery machine comprising a rotat
ing shaft, means forming a cam race mounted
on said shaft, a cam follower in said race, a guide
channel member, a needle driving block recti
linearly slidable within said channel member and
pivotally connected with said cam follower, a
needle guide member in one end of said channel .
member, a thread guide member in the other
end of said channel member, and means form
ing an expansible thread guiding passage be
tween said block and said thread guide member.
7. An embroidery machine comprising a rotat
ing shaft, means forming a circular cam race
mounted eccentrically on said shaft, a cam fol
lower in said race, a guide channel member, a
needle-driving block rectilinearly slidable in said
channel member and pivotally connected with 60
said cam follower, a needle guide member in one
end of said channel member, a thread guide
member in the other end of said channel mem
her, and means forming an expansible thread
guiding passage between said block and said 65
thread guide member.
8. An embroidery machine comprising a rotat
ing shaft, means forming a circular cam race
mounted eccentrically on said shaft, a cam fol
lower in said race, a guide channel member, a 70
needle-driving block rectilinearly slidable in said
channel member and pivotally connected with
said cam follower, a needle guide member in one
end of said channel member, a thread guide
member in the other end of said channel mem 75
2,112,186
her, and a closely coiled spring forming a thread
guiding passage between said block and said
thread guide member.
‘
9. In a portable embroidery machine a casing
having a bearing sleeve affording a hand grip, a
rotary shaft mounted in said sleeve, means form
3
12. In a portable embroidery machine a cas
ing having a bearing sleeve affording a hand
grip, a rotary shaft mounted in said sleeve,
means forming a circular cam race mounted on
said shaft, a cam follower in said cam race, a
cover for said casing enclosing said means and
ing a cam race mounted on said shaft, a cam _ mounted on said cover in position to traverse
follower in said cam race, a cover for said casing
enclosing said means and cam follower, a guide
10 channel member mounted on said cover, a needle
driving block slidable rectilinearly in said chan
nel member and having a pivotal connection with
said cam follower thru a slot in said cover.
10. In a portable embroidery machine a cas
follower thru a slot in said cover, a needle guide
in one end of said channel member, a thread
grip, a rotary shaft mounted in said sleeve, means
guide in the other end of said channel member,
and a closely coiled spring between said block
and said thread guide member forming an ex 15
pansible thread guide passage.
forming a cam race mounted on said shaft, a
cam follower in said cam race, ‘a cover for said
ing, a rotary shaft extending into said casing,
15 ing having a bearing sleeve affording a hand‘
casing enclosing said means and cam follower,
a guide channel member mounted on said cover,
a needle driving block slidable rectilinearly in
said channel member and having ‘a pivotal con
30
the axis of said shaft, a needle driving block
slidable rectilinearly in said channel member
and having a pivotal connection with said cam 10
13. In a portable embroidery machine, a cas
a radial member secured for unitary movement
with said shaft, means forming a cam race, a 20
sliding adjustable connection between said mem
ber and said cam race means, a cam follower in
nection with said cam follower thru a slot in
said cover, a needle guide in one end of said
channel member, a thread guide member in
said cam race, a cover for said casing enclos
ing said race means and cam follower, guide
‘the other end of said channel member, and
means forming an expansible thread guide pas
sage between said thread guide member and said
needle driving block.
block slidable rectilinearly in said channel means
and having a pivotal connection with said cam
11. In a portable embroidery machine a cas
ing having a bearing sleeve a?‘ording a hand
grip, a rotary shaft mounted in said sleeve,
means forming a circular camv race mounted on
said shaft, a cam follower in said cam race, a
a cover for said casing enclosing said means and
cam follower, guide channel means mounted
on said cover in position to traverse the axis of
said shaft, a needle driving block slidable recti
linearly in said channel means and having a
40 pivotal connection with said cam follower thru
a slot in said cover.
channel means on said cover, a needle driving
follower.
14. In a portable embroidery machine, a cas
ing, a rotary shaft extending into said casing, 30
a radial member secured for unitary movement
with said shaft, means forming a cam race and
having a diametric bridge, means to adjustably
_ secure said diametric bridge on said radial mem
ber, a cam follower in said cam race, a cover 35
for ‘said casing enclosing said race means and
cam follower, guide channel means on said cover,
a needle driving block slidable rectilinearly in
said channel means and having a pivotal con
nection with said cam follower.
40
JAMES C‘. WILLIAMS.
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