US290477A - Half to jane halliwell - Google Patents

Description

.(ModeL) J. S. SAOKETT.

RUFFLING ATTACHMENT FOR SEWING MACHINES.

No. 290,477. Patented Dec. 18, 1883.

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UNITED STATES JOSEPH S. SACKETT, OF NEW HAVEN, CONNECTICUT, ASSIGNOR OF ONE- HALF TO JANE HALLIVVELL, OF SAME PLACE.

RUFFLING ATTACHMENT FOR SEWING-MACHINES.

SPECIFICATION forming part of Letters Patent No. 290,477, dated December 18, 1883.

V Application filed October 1, 1883. (Model) To all whom it may concern.-

ence marked thereon, to be a full, clear, and

exact description of the same, and which said drawings constitute part of this specification, and represent, in-

Figure 1, a side view showing the crimpingblade in its forward position; Fig. 2, asideview showing the crimping-blade in its rear position; Fig. 3, a horizontal section on line so a: of Fig. 2.

This invention relates to an improvement in that class of rufilers for sewing-machines in which the crimping-blade is actuated by ale:

ver hung to the needle-bar. In the usual construction this lever is what is commonly called a bell-crank lever'that is to say, an L- shaped lever pivoted at the angle and above the crimping-blade, the crimping -blade attached to the shorter arm, the longer arm extending into connection with the needle-bar, and so that the reciprocatingmovement of the needle-bar imparts a reciprocating movement to the crimping-blade at substantially right angles to the path of the needle-bar. In this usual construction it is impracticable to make a fixed connection between the lever and the crimping-blade, as a certain amount of adjustment is necessary, and to make this adjustment the arm of the lever which is connected withthe crimping-blade is usually made in fork shape, the two prongs working the one tion with the needle-arm, as more fully hereinafter described.

A represents the frame, which may be attached to or made a part of the presser-foot B, or may be otherwise attached to the machine; C, the slide which carries the crimping-blade D. This slide is constructed with a longitudinal slot, E, which works on a horizontal pin or stud, a, extending from the frame.

F is a lever, one end pivoted to the frame, as at b, and so as to vibrate in a vertical plane toward and from the needle of the machine. The other end of the lever F is hung to the crimper-blade slide 0, as at (I.

G is a connecting-rod hung by one end to the lever F, as at e, midway between the pivots b and d, the other end constructed with a slot, H, within which the screw or stud I on the needle-bar works in the usual mannerfor operating ruffler-levers, and so that the descent of the needle-bar from the position seen in Fig. l to that in Fig. 2 will turn the lever downward, and, returning, will carry the lever upward.

The operation is as follows: Starting from the position seen in Fig. 1, with the needlebar up, in which position the crimping-blade is forward, descending, the stud I on the needie-bar follows in the slot H until it reaches the opposite extreme of the slot, as seen in broken lines, Fig. 1, and without effect upon the lever F; but from the point where the stud I comes in contact with the lower or opposite end of the slot in the connecting-rod the lower end of the connecting-rod is forced away from the needle-bar during the remainder of the descent of the needle-bar to the position seen in Fig. 2, and which movement of the connecting-rod turns the lever F, and withdraws the crimping-blade to the position seen in Fig. 2. Then, as the needle-bar returns or ascends, it follows through the slot H in the connectingrod-without effect upon the rod or crimper until the upper end of the slot is reached, as seen in broken lines, Fig. 2. From that point the rod is carried upward with the needle into the position seen in Fig. 1, which draws the crimping-blade forward into the position seen in Fig. 1. This movement of the crimpingblade is the same as in common rufiers-that 100 is to say, the retreat and advance of the crimp ing-blade is made during that part of the move ment of the needle-bar while the point of the needle is above the work-plate, so that a new crimp or plait is laid at each full movement of the needle-bar. If the connecting-rod G be pivoted directly to the lever F, the movement of the crimping-blade would be the same at all times. As adjustment is desirable, so that crimps of different extent may be laid, I make the connection between the rod G and the lever F adjustable; and this I do as seen in Fig. 3. I construct the lever F with a slot, f, at about right angles to a line drawn from the pivot b to the pivot d, and in this slot I arrange the pivot e, on which the connecting-rod G works, the pivot being provided with a head outside the connecting-rod, and with a head on the opposite side of the lever, as seen in Fig. 3, and so that the pivot may move freely longitudinally in the slot f, if permitted so to do. The lever is also constructed with an ear, h, through which an adjusting-screw, z", is set, following the line of the slot. If this screw be turned inward until the pivot 6 comes against the forward end of the slot, and so that the screw will hold it in that position, then the lever F will be moved to the full extent permitted; but if the screw be withdrawn, then a corresponding amount of play will be permitted the pivot e in the slot f of the lever F, and so that, in descending, the connecting-rod will have no effect upon the lever until it comes into contact with the screw, and in ascending it will have no effect'upon the lever until it 5 comes into contact with the forward end of the slot. This amount of play may be varied by turning the screw out or in to a greater or less extent, according to the extent of crimp required. By this construction I am enabled to make a firm connection with the crimping blade, and also to make the adjustment more convenient than can be done in the common bell-crank lever.

The crimping mechanism, it will be understood, may be any of the known constructions, that constituting no part of my invention, it only being essential to my invention that there shall be a crimping-blade arranged to receive reciprocating movement.

I claim The combination of the crimping-blade arranged to receive reciprocating movement, the lever F, one end pivoted to the frame, the other in connection with the plate, constructed with a slot, f, the adjusting-screwi in said lever and parallel with said slot, the connecting-rod G, one end constructed with a slot for connection with the needle-bar, the other end hung to a pivot arranged to slide in the slot of the lever F, the extent of such sliding of the pivot being made adjustable by said screw 2', substantially as described.

JOSEPH S. SAOKETT.

Witnesses:

J OHN E. EARLE, J 0s. 0. EARLE;

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