Devices Adapted to be Used therewith.
Year: 1884

page_text: Devices Adapted to be Used therewith.
[Communicated from abroad by The Morley Sewing Machine Company, of
Boston, in the State of Massachusetts, United States of America, Charles
A. Sinclair, Treasurer.]
I WILLIAM PHILLIPS THOMPSON, Fel. Inst. P.A., of the Agency for Foreign
Patent Solicitors N° 6 Lord Street Liverpool, in the County of Lancaster, and
323 High Holborn, in the County of Middlesex, Civil Engineer, do hereby declare
the nature of the said Invention for "IMPROVEMENTS IN SEWING MACHINES AND
IN BUTTON FEEDING DEVICES ADAPTED TO BE USED THEREWITH and in what
manner the same is to be performed, to be particularly described and ascertained
in and by the following statement :-
"
This Invention is in the nature of an improvement upon English Letters Patent
No 326 dated Jan. 25, 1881, and No 4939 dated October 17, 1882 to which
reference may be had, and it relates to improvements in the details of the
construction of the button turning and clamping mechanism of machines for
sewing buttons to fabrics etcetera, and of mechanism for operating said button
turning and clamping devices, and of improved take up operating devices of
improvements in the method of hanging and operating the sewing needle bar
frame and giving the latter a steady motion, of improved stitch forming devices
added to those shown in said former Patents, and of an improved thread cutter.
On the Drawing forming part of this Specification
Fig. 1 is a side elevation of the machine, with the side plate removed.
Fig. 2 is a face view of the mechanism operating the button turning and
clamping devices.
Fig. 3 is a view partly in section of the button clamping devices.
Fig. 4 is a section on line x x Fig. 1.
Fig. 5 is an inverted plan view of the machine.
Fig. 6 is an end elevation with the end plate removed.
Fig. 7 is a top plan view of the presser foot, showing the looper device partly in
full and partly in dotted lines.

page_text: A is the frame of the machine, 2 is the button hopper into which the buttons
are placed as in said Patents, 3 is the button trough to carry buttons in a line to
the sewing devices, 5 is a cap on the trough 3, adjustable to accommodate different
sized buttons, 4 is a button turner which is given a reciprocating motion on
trough 3 by the lever 26, to turn the buttons so that their shanks will hang down
in the trough. The lever 26 is vibrated by its engagement with the double
cam 24 and is hung on a cross shaft under the frame A.
The button turning shaft 6 is perforated longitudinally to permit of the insertion
of the piston 14, therein from its rear end, and its opposite end is bored out larger
to receive the shank, 13, of the movable button-clamp 7, the said shank having an
adjusting screw 15 in its end as shown in Fig. 3. The end of the shank 6 extends
beyond the clamp 7 and is hollow and slotted and has a spring 8 therein operating
against said clamp. A fixed button clamp 12 is secured on shaft 6 by a sleeve
and screws as shown in Fig. 1. The said two clamps are located, as shown,
directly under the end of the button trough, and the shaft 6 has a reciprocating
rotary motion in suitable bearings in frame A, and the piston 14 has a reciprocating
longitudinal motion in shaft 6 abutting against screw 15 in shank 13, said shaft
and piston being so operated by the following described means :-
The main shaft 21 is turned by a belt running on pulley 20 and a gear 37 on
said shaft, engaging with a gear 23 on a shaft 22 rotates the latter, on the outer
end of which is fixed a cam wheel 19 having a raised cam 17 on its outer face and
a cam groove shown in dotted lines in Fig. 2 in its inner face. A frame case 10 is
secured to the rear end of the machine which covers a pinion 11 fixed on the end
of shaft 6 and on which is hung a lever 16 which has one end acting against the
end of the piston 14, and its lower end is acted on by the cam 17 as the wheel 19
revolves. A cam lever 18, having on its upper end a geared sector which engages
with pinion 11, has a stud near its lower end which engages with the said cam-
groove in wheel 19. Thus once in every revolution of said cam wheel lever 16 is
acted on by cam 17, and made to drive piston 14 against the end of the clamp
shank 13, and push clamp 7 away from clamp 12 far enough to let a button from
the trough drop between the two clamps. Cam 17 then passes from under the end
of lever 16 letting spring 8 drive clamp 7 against and hold the button, and while
the latter is so held the lever 18 is acted on by cam wheel 19 and made to vibrate
and roll shaft 6 over, carrying the button held by the clamps over against the
presser foot 36 and holding it on to the fabric in such position that the needle can
carry the thread through its shank and sew it on as described in said Patents.
Lever 18 and wheel 19 then turn bar 6 and the clamps back again to receive
another button.
The take up 40 in this machine (see Fig. 6) is hung on the inside of the front
plate by a pivot pin 49 and has a cam slot 46 in its lower end in which a stud 45
on the needle bar 44 engages, so that when said needle bar is given its reciprocating
motion, the take up is made to have its requisite vibratory motions to take up the
thread in the formation of the stitch.
In this machine the swinging needle bar frame 28 is hung on the shaft 38 (see
Figs. and 5) being clamped thereon as shown in the latter Figure. An arm 30
having a friction roller hung on its upper side projects from the lower end of the
frame 28 under a cam 31 on shaft 21 and said cam bears on said roller. A cain 29
on the end of the shaft 22 throws the frame 28 and the hook needle bar and cast
offs from you looking at Fig. 1, cam 31 all the while bearing on the roller on
arm 30, and when cam 29 ceases to act on frame 28 cam 31 operates to swing it
towards you holding it against cam 29, thereby by said two cams and the aid of
the spring and lever 43 and 42 keeping a steady vibratory motion in frame 28 free
from any disagreeable shocks.. The needle bar in frame 28 is given its reciprocating
motion by its connection by the pitman 27 with the vibrating elbow lever 25
which has its vertical arm engaging with one of the grooves in the cam 24 on
shaft 22

page_text: A thread cutter 41 is pivoted in the machine having a handle reaching towards
the operator, and a cutting end adapted to cut the thread close to the hook needle,
leaving thread enough to begin sewing again after having so disengaged a sewed
piece of work from the machine. This obviates taking up a tool for doing this
and the drawing out of any extra thread before beginning to sew again.
In the machines shown in said former Patents, a stitch was made before one was
sewed through the button shank, then the fabric was slightly moved along and
then a stitch was made through the button shank, and following this the fabric
was fed along to bring a place for next stitch by the side of the next button and
then another button was sewed on as before, thus making a stitch by the side of
each button as well as through the latter. Now in this improved machine the first
stitch is made directly through the button shank without the aforesaid short stitch
by the side of it so that no stitch is shown on the right side except through the
button shank. To provide for making two loop stitches in the same place in the
fabric without letting the machine feed, it is necessary to carry the thread across
under the leather and over the hook needle, so that the latter may pass through
the loop so drawn across, therefore the looper 35 is applied under the presser foot 36
to perform the office of carrying the thread from the eyed needle to the hook needle
as aforesaid.
In preparing the presser foot to co-operate properly with the looper to set the
cross stitch free after it is made, a short tongue 48 is provided in an opening in
the presser foot to let the thread slip clear of the latter after looping as above
described.
The looper 35 Fig. 7 has a hook 50 on its edge to engage with said loop, and
has a cam slot in it with which a pinion on the presser foot engages. Its rear end
is pivoted to a crank on the upper end of a reciprocally rotating vertical shaft 34,
and when the latter is so rotated the hook 50 of the looper is given a motion to
and from the tongue 48. The shaft 34 is turned as above described by the
horizontal lever 33 (Figs. 1 and 5) which is pivoted under frame A and has a stud
on its upper face engaging in the slot of the cam 32 on shaft 21. An arm on
lever 33 is pivoted to the end of a crank 39 on the lower end of shaft 34. Thus a
vibratory motion in lever 33 is converted into a reciprocating rotary motion in
shaft 84 to operate the looper as aforesaid.
The operation of the needle and looper to form the improved stitch above
described is as follows:-
The eyed needle goes up through the shank of the button, the hook needle then
catches the loop and draws it down through the leather, the looper hook 50 then
catches the loop and draws it across, and the eyed needle goes up again and the stitch
is repeated making two stitches through the shank of the button which prevents
any slipping of the stitches when the button is pulled upon or strained.
Having now particularly described and ascertained the nature of the said
Invention as communicated to me, and in what manner the same is to be
performed, I declare that what I claim is:
1st. In a machine for sewing buttons to fabrics, the shaft 6 provided with the
fixed clamp 12, the movable clamp 7 and its shank, a spring to move the latter
against the former, the piston 14, and mechanism substantially as described to move
said piston against said movable clamp, and to reciprocally rotate shaft 6,
substantially as set forth.
2nd. The take up 40 adapted to be pivoted to the front plate of the machine,
and having a cain slot 46 therein, and the needle bar 44 having a stud thereon
engaging with said slot, substantially as set forth.
Brd. The swinging needle bar frame 28 having the arm 30 thereon and hung on
a shaft under the machine, the cam 29, and the cam 31, all as set forth.
4th. The thread cutter 41 adapted to cut the thread under the presser foot,
substantially as set forth.

page_text: 5th. The looper located under the presser foot having a hook thereon to engage
with the thread loop, the shaft 34 having two cranks thereon, the lever 33, and the
cam 32, substantially as set forth.