US842161A - Take-up for sewing-machines. - Google Patents

Description

PATENTED JAN. 29, 1907.

' W. M. AMMERMAN.

TAKE-UP FOR SEWINGMAOHINES.

APPLICATION FILED MAY 4, 1904.

2 HEETS-SHEET 1.

1%,. 842,151 I PATBNTED JAN. 29, 1907.

W. M. 'AMMBRMAN.

TAKE-UP FOR SEWING MACHINES.

. APPLIUATION FILED MAY 4, 1904.

2 SHEETS-SHEET "H unrrnn s'ra rns PATENT carious.

WILLIAM M. AMMERMAN, OF NEW HAVEN, CONNECTICUT, ASSIGNOR TOT HE EDWIN J. TOOF COMPANY, OF NEW HAVEN, CONNECTICUT, A CORPORA- TION OF NEW JERSEY.

TAKE-UP FOR SEWING-MACHINES.

Specification of Letters Patent.

Patented Jan. 29, 1907.

Application filed May 4.1904. Serial No- 206,291.

resident of New Haven, in the county of'New' Haven and State of Connecticut, have invented certain new and useful Improvements in Take-Ups for Sewing-Machines, of

- which the following is'a specification.

This invention relates to improvements in sewingmachine take-ups, and more particularly to that class of take-ups in which a take-up lever is pivotally connected at one end to a rotary actuating-crank and is fulcrumed at a point'betweenits ends on the.

free end of a link that is pivotally attached at its opposite end to some stationary part of the frame ofthe machine, such arrangement and combination of parts causing combined translatory and vibrating movements to be imparted to the take-up lever when the machine is in operation. In adjustingthe takeup for coooperation with the other parts of the stitch-forming mechanism great accuracy is required in ordento assure perfect stitching; and it has therefore been one of the objects of my present invention to provide an improved take-up mechanism having adjusting' means whereby the throw or movement of the take-up lever may be conveniently and accuratel T adjusted after the several'parts' of the m ce anism have been otherwise as- A sembled. This object I attain by means of the novel features of construction and com bination of parts, as hereinafter set 'forth in detail, and pointed out in the claims.

Referring to the accom an'ying drawings,

forming part of this speci ication, Figure 1 is a front end elevation, with the face-plate rcmoved, of a sewing-machine arm provided with my improved take-up. Fig. 2 is a side elevation of the same with the arm broken away. Figs. 3 and 4 are detail views illustrating the take-up and certain associated parts at different times during the operation of the machine. Figs. 5 and 6 are end and side views, respectively, of an adjustable pivot-support detached from the crank-disk and Figs. 7 and 8 are edge and side views,

respectively, of the erankdisk.

parts mall the figures of the (llawino-s.

Similar reference characters designate like medium of a pitman 5. These parts are 'of usual construction and operation. The

take-up embodying my invention, as herein shown, comprises. the straight or substanactuated by said crank-disk 3 through the tially straight take-up lever 6, pivotally connected at one end to the said crank-disk 3 andfulcrumed at a pointbetween its ends at 7 to the free end of a swinging link 8, that is pivotally attached at its opposite end to the arm of the machine at 9. constructed and arranged as thus described With the parts and as shown the crank 3 and the link'S will so operate the take-u lever as to. cause its free or thread-engaging end to cooperate with the other parts of the stitchdorming mechanism in a desired manner to properly control the thread during the stitch-forming operation.

The crank-disk 3 is provided with the usual crank-pin for the connection therewith of the needle-bar pitman 5.

nection between the take-up lever and the said crank-disk; but in the present case instead of making a direct connection between the take-up lever and the crank-pin by entering the latter into an opening in the lever in the usual manner the said crank-pin is provided at the front end thereof with an eccentrically-located pivot, herein shown as a screw 11, for connection with the take-up lever. With this arrangement of parts by turning the pin 10 in its seat 12 in the crankdisk the position of the supported pivot 11 may be shifted to adjust the throw or movement of the connected takeup lever within certain limits, and thereby permit a'dcsired accuracy of cooperation of the take-up with the other parts of the stitch-forming mech- This crank-pin (indi-' cated at 10) is also utilized for effecting conanis'm to be obtained. Any suitable means my; be employed to secure the pin 10 in adju bed position within its seat, the means prcvided for such purpose, as herein shown,

IOO

- of the thread from said e ye.

being a clamping or set screw 14, engaging with the disk at opposite sides of a slit 15 therein, which intersects the said pin-seat and causing the walls of the latter to clamp and hold the contained pin in adjusted posltion.

As a means for permitting ad justm'cnt of the take-up Without removing or disassembling any of the parts thereof the arm or frame 1 is provided with an opening 16 in a position opposite the peripheral edge of the crank-disk, as shown in Fig. 2, through which a screw-driver or other suitable tool may be inserted for the purpose of operating the clamping-screw 14, it being understood that by looseningthe said 'screw to unclamp 't hc pivot-supporting pin 10 the latter may be turned to shift or adjust the position of the pivot 11 as desired by means of the takeup lever, after which the parts will be secured i in adjusted position by again tightening the said clamping-screw.

The take-up lever 6 is provided with-the usual'thread-receiving eye 6 at its outer end, having a threading-slit 6 for the entrance of the thread thereinto, whichsaid slit is normally closed by a spring 17, that is so arranged as to permit the ready passage of the comprising a rotar thread past the same into the eye 6 and thereafter prevent the accidental withdrawal What I claim is-- 1. A sewing-machine take-up mechanism, crank, a take-up lever pivotally connectc at one end to said crank, means for adjusting said take-up lever bodily in a direction radially relative to the axis of v said crank, and means cooperating with said crank for-controlling the movement of said take-up lever.

2. A sewing-machinetake-up mechanism,

comprising a rotary crank, a take-up lever, a pivot carried by said crank to which one end of said take-up lever is connected and being adjustable to adjust the take-up lever bodily in a direction radially relative to the axis of thccrank, and means cooperating Withsaid crank 'for controlling the movement of the take-up lever.

y 3. A sewing-machine take-up mechanism, comprising a rotary crank, a pin rotatably.

mounted on said crank and carr ing an cecentricall -supported pivot, a ta re-up lever connects only at one end to said pivot and being bodil 1 adjustable thereby in a direction radial yrelative to the axis of said crank, and a link cooperating with said crank for controlling the movement of the take-up lever. v

4. A sewing-machine take-up mechanism, comprising a rotary crank-disk having an opening therein, a in rotatably seated Within said opening an carrying an eccentricallysupported plvot, a take-u. lever connected at one end only w th sea pivot and being bodily adjustable thereby in a direction radially relative to the axis of the said crank,

and a pivoted link cooperating with said crank for controlling the movement of take-up lever.

5. In a sewing-machine, the'combinatiqn with a takeup mechanism comprising a to; tary crank, an adjustable pivot carried by said crank, a clamping-screw located at the periphery of the crank for securing said pivot in adjusted position, a take-up lever connected at one end to said pivot, and means the cooperating with said crank for controlling

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