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Патент USA US2411499

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NOV. 26, 1946.
H. BOOTHROYD
'
2,411,499
SEWING MACHINE
Filed June 29, 1945
1a., 2,
'
, Inventor
Hubev-i- BOOi/myd
‘LS Aizfov-neg
Patented Nov. 26, 1946
r 2,411,499
UNITED STATES PATENT OFFICE
2,411,499
SEWING MACHINE
Hubert Boothroyd, Leicester, England, assignor
to United Shoe Machinery Corporation, Flem
ington, N. J., a corporation of New ‘Jersey
Application June 29, 1945, Serial No. 602,197
In Great Britain July 19, 1944
6 Claims.
(Cl. 112-35)
2
This invention is concerned with improvements
in or relating to sewing machines and is par
ticularly, but by no means exclusively, concerned
sist in certain devices, combinations and arrange
ments of parts, hereinafter described and claimed,
the advantages of which will be apparent from
the following description taken in connection with
with curved hooked needle chainstitch welt shoe ‘
sewing machines organized for sewing an inseam
the accompanying drawing.
through an upper, a Welt and an insole of a Good
‘
In the drawing,
year welt shoe; the term shoe used ‘herein being
intended to include outer footwear generally.
By way of example, the invention is herein illus
part of the illustrative mechanism;
trated as embodied in a welt and turn shoe sew
II—-II in Fig. 1; and
ing machine in which mechanism for supporting
awl, needle and other stitch forming devices is
arranged to cause the awl and needle to enter
the work from the same side thereof and the
chain of the inseam, i. e., the interlocking loops
of thread, to lie on the welt.
Fig. 3 is a sectional view, in left-hand side ele
vation, of the illustrative mechanism taken on the
line III—-III in Fig. 2.
The machine illustrated in the drawing is a
welt shoe inseam sewing machine of the general
character of the machine ‘described in United
Fig. 1 is a left-hand view in side elevation of
Fig. 2 is a sectional View, taken on the line
One of the various objects of the present in- ,
vention is to enable relatively movable parts of a
shoe inseam sewing machine to be supported in
the machine in such a manner as to prevent un
desirable relative movement.
Another of the various objects of the present
invention is to enable parts of a shoe inseam
sewing machine which are particularly subject to
relatively rapid wear to be readily and inex
pensively renewed in a particularly convenient
States Letters Patent No. 2,041,945, granted May
26, 1936, on application of Alfred R. Morrill, ex
cept that the machine of the present application
20 is arranged, as in United States Letters Patent
No. 1,920,998, granted August 8, 1933, also on'
application of Alfred R. Morrill, to lay the chain
it
of the seam on the welt instead of in the channel
of the insole of the shoe being operated on, as
described in said ?rst-mentioned patent.
'
The illustrative machine comprises a curved
manner.
awl I secured in an awl support or carrier 3 ar
In the illustrative machine hereinafter de
scribed a needle support, a needle guide support
ranged to oscillate about an aXis 5 into engage
, ment with a workpiece and away therefrom. The
and a channel guide support all form together a 30 awl support 3 has extending from it cylindrical
carrier movable towards and from the work about
the same axis and in the direction of work feed
so that a needle and a channel guide respectively
secured on the needle support and channel guide
support cooperate with an awl support compris
ing a second carrier similarly mounted in the
machine to eifect a continuous or substantially
continuous feed of the work, the needle and chan
nel guide carrier and awl carrier being mounted
inreadily removable bearings secured to the ma
chine frame with fastenings common to more than
one of the bearings to enable easy replacement.
In order to provide support for the needlean'd
channel guide carrier additional to ‘that pro
vided by the removable bearings, the needle and
channel guide supports are provided with inter
engaging portions arranged outside the circle
of the needle as far as is convenient away from
the axis about which these supports move. These
portions 1, ‘l rotatably and slidably mounted in
readily renewable bearings or bushes 9, 9. The
bushes 9, 9 are secured in a bracket H which is
?xed to the head of the machine by bolts, one of
which is shown at l3. The bracket II has a por
tion I5 which connects the parts of the bracket
ll directly contacting the machine frame. The
bushes 9, 9 each have a ?ange ll extending there
from, which ?anges are secured by fastening
screws !9, 19 to the frame bracket H. The awl
support 3 is moved to and fro in the line of feed
by cam-operated levers, portions‘ of which are
shown at 2!, 2| which engage hardened discs 23,
23 in bores in the cylindrical portions 1, 1 of the
awl support 3 and the awl support is oscillated
about the aXis 5 by cam-operated mechanism sim
ilar to that disclosed in Patent No. 1,920,998, re-'
ferred to. Y
i
The curved hooked needle of the machinaiin
portions, while they allow relative oscillating 50 dicated at 25, is mounted on a separate carrier
movement of ‘the needle and channel guide 'sup
and=is secured in a needle support 21 which has
ports about said axis, are arranged to prevent
projecting from it a sleeve portion 129 (Fig. 2)
undesirable relative lateral or twisting or cant‘
rotatably and slidably mounted in a‘readily're
lng movements of the supports.
'
- These and other features of the ‘invention con
placeable bearing bracket 3! secured by the afore
55 said fastening-screws l9, l9 to the frame bracket ‘
2,411,499
3
4
of the flange. By this construction it is possi
51 which has on it a ?ange 59 engaging the end
of the sleeve portion 31. At the end of the spindle
5i opposite the flange the spindle is secured to
the sleeve portion 28 by a pin 6!. The pin BI
and ?ange 59 on the spindle prevent relative axial
movement between the needle, needle guide and
channel guide support parts of the carrier but
jecting from it a sleeve portion 3'! ' rotatably
patents above referred to.
H. The screws i9, I!) are threaded into the
bearing bracket 3! at one side of the frame
bracket I! and pass through clearance holes in
the frame bracket I! and flange H at the other
side of the frame bracket it, the undersides of
the heads of the screws engaging the outer face
allow the, supports to oscillate relatively about
ble to renew the bearing bracket 3| and the bush
the axis of the spindle 5?. At each end of the
5} at the left side of the machine merely by
removing the set of screws IE3 at the left which 10 spindle 51 is a small block 63 arranged to be
engaged by cam-operated levers, indicated at 65,
form common fastenings for both the bearing
acting to move the carrier for the needle, needle
bracket 3! and adjacent bush 9.
guide and channel guide to and fro in the direc
The channel guide 33 is secured on a channel
tion of work feed. The needle, needle guide and
guide support 35 which is mounted for oscilla
tion relatively to the needle but forms a part of 15 channel guide are oscillated relatively to each
other about the axis of the spindle 5'! by cam
the carrier for the needle and channel guide
operated means, as described more fully in the
together. The channel guide support has pro
The awl support-3 alone comprises the awl
and slidably mounted in a bracket 39, similar to
the bearing bracket 3i, secured to the bracket 20 carrier and is separate from that formed by
the needle and channel guide'supports 2'! and
H by fastening screws in the same manner as
35 together with the spindle 5] on which the
that of the bearing bracket 3!. The bearings for
needle, channel guide and needle guide are
the awl carrier and the needle and channel guide
carrier formed‘by the pair of bearing brackets
.mounted.
The construction and arrangements
3!, 3i) and the adjacent pair ofibushes 9 thus 25 of the carriers thus are compact, rigid and dura
ble in use and serve in minor particulars to assist
may readily be removed from the frame bracket
in assembling the various carrier parts and_bear
i l and renewed if the parts become worn, saving
ing members therefor during the manufacture
expense of replacing the larger and heavier parts
of the machine. The construction of the arcuate
of the machine; Renewing the bearing brackets
when worn, also restores the axial alinement of 30 guiding portion 43 and groove 45;, being remote
from the spindle 51, obviously interferes in no'
the needle support and the channel guide sup
way with the assembly of the needle and channel
port,
>
guide supports and is conducive to an extremely
To provide additional support for the needle
and channel guide carrier parts the channel guide
support 35 has secured to it a block M having 35
rugged
construction.
'
. -
The nature and scope of the invention having
been indicated and‘ a particular embodiment
formed on it an arcuate guiding or rib portion
thereof having been described, what is claimedis:
43 concentric to the axes of the needle and chan
1. A chain stitch inseam shoe sewing machine
nel guide support sleeve portions 29, 3? which
having a frame member, stitch forming devices
are themselves in axial alinement. The arcuate
guiding portion ‘i3 engages a groove 45 in the 40 in the frame member including a curved hook
needle, an awl, a channel guide, and a carrier
needle support 2?, which-is arranged as far as is
on which the needle and a second one of the
convenient outside the circle of the needle from
stitch forming devices are mounted, and a sepa
the axis of the sleeve portion 29. The arcuate
rate carrier on which the third one of the stitch
guiding portion 53 has on it a face 41*, at right
angles to the axes of the sleeve portions 29, 31 45 readily
formingremovable
devices is bearing
mounted,members
in combination
for said car'
and engages a face 49‘ on the needle support,
which engaging faces prevent the needle support
and channel guide support from separating move
riers secured in the frame member with a fasten
ing common to more than one of the bearing
ment axially away from each other.
members.
2. A chain stitch inseam shoe sewing machine
having a frame member, stitch forming devices
As shown
particularly in Fig. 3, the arcuate guiding por 60
tion 43 is of. such angular extent around the
aforesaid axes‘that, after wear of the bearing in
in the frame member including a curved hook
needle, an awl, a channel guide, and a carrier
on which the needle and a second one of the
twisting or canting movement of the needle sup
port in the bearing about the point of engage 55 stitch forming devices are mounted, and a sepa
rate carrier on which the third one of the stitch
ment of the needle in the work relatively to the
the bracket 39, the arcuate portion also prevents
channel guide during work feed and ensures that
the portion 413 and groove 4-5 will be in engage
forming devices is mounted, in combination with
readily removable bearing members for said car
riers comprising a bearing bracket and‘ a ?anged
ment during the whole of the relative oscillating
movement between the needle support and chan 60 bearing bush with a common fastening screw
passing through the flange of the bush, the frame
nel guide support about said axes.
member and the bearing bracket to secure said
The needle'is equipped with the usual form
of needle guide 5! secured to a needle guide sup
3. A chain stitch inseam shoe‘ sewing machine
port 53 positioned between the needle support
2'! and channel guide support 35. The needle 65 having a frame member,- stitch forming devices
parts-together.
guide support
pivotally mounted on a bush
ing 55 having a tongue-and-groove connection
to the needle support so that it rotates there
with. The block M spans the thickness of the
needle guide support 53 and thus serves to hold 70
all the parts of the needle and channel guide ‘
-
'
'
'
in the frame member including a curved hook
needle, an awl, a channel guide; and a carrier
on which the needle and a second. one of the
stitch forming devices are mounted, and asepg
arate carrier on which the third one‘ of, the'stitch;
forming devices is mounted, in combination'with
readily removable bearing members for said car-:
riers comprising a pair of bearingbrackets and
Passing through the sleeve portions 29 and 3‘!
a pair of ?anged bushes with common fastening
of the needle and channel guide carrier and the
bushing 55 of the needle guide support is a spindle 75 screws, each passing through; the ?ange of? a
carrier together.
_
5
2,411,499
bush, the frame member and a bearing ‘bracket
to secure said parts together.
4. A chain stitch inseam shoe sewing machine
having work feeding and stitch forming devices
including a curved hook needle, an awl, and a
6
the needle and channel guide, and a spindle for
preventing relative movement from axial aline
ment between the needle and channel and needle
guide supports, in combination with rib and
groove means on the needle and channel guide
channel guide mounted for relative oscillating
supports spanning the needle guide and prevent
movement, a carrier movable back and forth in
the direction of Work feed upon which the awl is
mounted, a separate carrier movable back and
ing axial movement of the needle support rela
tive to the channel guide support during the
whole of the relative oscillating movement of
forth in the direction of work feed comprising 10 said supports.
axially alined supports for the needle and chan
6. A chain stitch inseam shoe sewing machine
nel guide, and a spindle for preventing ‘a rela
having work feeding and stitch forming devices
tive movement from axial alinement between the
including a curved hook needle, an awl, and a
needle and channel guide supports, in combina
channel guide mounted for relative oscillating
tion with interengaging portions on the needle 15 movement, a carrier movable back and forth in
and channel guide supports outside the circle of
the direction of work feed upon which the awl is
the needle for preventing axial movement of the
mounted, a separate carrier movable back and
needle support relative to the channel guide dur
forth in the direction of work feed comprising
ing the whole of the relative oscillating movement
axially alined supports for the needle and chan
of said supports.
20 nel guide, and a spindle for preventing a rela
5. A chain stitch inseam shoe sewing machine
tive movement from axial alinement between the
having work feeding and stitch forming devices
needle and channel guide supports, in combina
including a curved hook needle, a channel guide,
tion with interengaging portions on the needle
and a needle guide located between the needle
and channel guide supports remote from said
and channel guide and mounted for relative os 25. spindle for preventing relative axial movement
cillating movement, and a carrier on which the
of separation between said supports.
needle,‘ channel guide and needle guide are
mounted, including axially alined supports for
HUBERT BOOTHROYD.
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