US1012000A - Sewing-machine ruffler. - Google Patents

Description

W. R. PARSONS.

SEWING MACHINE RUFFLER.

APPLICATION FILED my a, 1911.

COLUMBIA PLANOOIAPH co..wAsl-||Nu'ruN, D. c.

UNITED STATES PATENT OFFICE.

WINSLOW R. PARSONS, OF CHICAGO, ILLINOIS, ASSIGNOR TO THE GREIST MANUFAC- TURING COMPANY, A CORPORATION OF CONNECTICUT.

SEWING-MACHINE RUFFLER.

Specification of Letters Patent.

Application filed May 8, 1911.

Patented Dec. 19, 1911.

Serial No. 625,831.

Illinois, have invented or discovered certain new and useful Improvements in Sewing-Machine Rufiiers, of which the following is a specification, reference being had therein to the accompanying drawings.

This invention relates to that class of sewing machine rufliers in which the ruffling blades are operated from the needle-bars of the machines in such a manner that the forward strokes of the ruflling blades are effected during the upward movements of the operating levers connected with the needle bars of the sewing machines, and in which the backward movements of the rufliing blades take place during the downward movements of the needle-bars. In some sewing machines as now made the take-ups are so timed as to complete their stitch-tightening movements after the needle-bars have commenced their downward movements. In the operation of sewing machine ruiilers for such machines it is desirable that the extreme forward throws of the ruffling blades should occur simultaneously with or immediately after the take-ups have completed their stitch-tightening movements, and when the needle thread isheld somewhat taut; as otherwise the ruftling operations cannot be performed in the best manner.

To this end the present invention comprises certain improvements in rufiiers of that class in which the forward strokes of.

movements of the operating levers connected with the needle-bars of the machines, and

the invention has for its object to provide improved means whereby, after the main forward movementilf a rufliing blade has been efiected during the upward movement of the operating lever with a sewing machine needle-bar, a slight additional forward movement may be imparted to the rufliing blade during the first part of the downward movement of the operating lever with the needle-bar, while the backward movement of the rutfiing blade will be effected during the last part of the downward movement of the operating lever with the needle-bar. By thus changing the timing of the ruflling blade the miller will be best adapted for cooperation with a sewing machine in which the take-up completes its stitch-tightening movement after the needle has commenced to descend for the next succeeding stitch.

The present improvement comprises an additional lever between the operating lever and the ruflling blade carrier and which additional leveris so constructed and arranged that after the forward movement of the rufliing blade has been mainly effected dur ing the upward movement of the operating lever with the needle-bar of the machine, the said additional'lever will be caused to impart a slight, further or additional forward movement to said ruifling blade during the first part of the downward-movement of the operating lever-with the machine needlebar, as will hereinafter more fully appear.

In the accompanying drawings Figures 1 and 2 are opposite side views of a sewing machine rutHer embodying the present invention. Fig. 3 is a rear view of the same, and Figs. 4 and 5 are detail views showing the parts to which the present improvement more particularly relates, and with said parts in different positions.

The present invention is herein shown as being applied to a fivestitch rufller such as that shown and described in the Greist and Beckert Patent No. 983,048, dated Jan. 31, 1911, but it will be understood that this invention may be embodied in other kinds of rmllers than the five-stitch rufiler referred to.

Referring to the drawings, 12 denotes the body of the frame of the miller, and which frame is preferably provided with an integral' attaching portion or shank 13 by which it may be secured to the presser bar of a sewing machine in substitution of an ordinary presser-foot. Theforked operating lever 14 is pivotally mounted on a stud l5 riveted to an upright portion of the frame 12. Also pivotally mounted on the said stud are an oscillating plate 16, a ratchet wheel 17 and a pendulous or secondary lever 18, the latter being jointed at its lower end to the carrier 19 of the ruffling blade 20. The pendulous or secondary lever 18 is provided at its top with a shoulder 21 to be engaged bya pawl 24 carried by the operating lever 14, said lever carrying a second pawl 23 which may be thrown into engagement with the teethof the ratchet wheel 24 when five-stitch ruftling is to be done, and by ruflie may be made at each stitch of the machine, or at each five stitches, according to the adjustment of said pawls, as fully described in the application of Emanuel J. Boyler, No. 601,905, filed Jan. 10, 1911.

In the rutfler of Patent No. 983,048, hereinbefore referred to, the entire forward movement of the milling blade is effected during the upward movement of the forked operating lever 14, which is actuated from the needle-bar of the sewing machine. In the present improved rutlier the main part of the forward movement of the rutiiing blade is effected during the upward movement of the operating lever 14, but after the upward movement of said lever let with the needle-bar has been completed, and when the said lever commences its downward movement with the needle-bar, an additional forward movement is imparted to the ruiiiing blade carrier by means of a lever 25 fulcrumed on a pin 26 and forked at its lower end to embrace the pin 27 by which the pendulous lever 18 is jointed to the ruflling blade carrier 19. The lever 25 is provided with a slot through which this fulcrum pin 26 passes, and in said slot, above said pin, is arranged a coil spring 28, this construction permitting of a slight endwise sliding movement of the said lever 25. The said lever 25 is provided at its upper end with a tooth or cam projection 29 having an abrupt front face, and the hub portion of the operating lever 14: is provided with a similar tooth or cam projection 30 having an abrupt rear face.

During the upward movement of the operating lever 14: the cam projection 30 on the hub portion of said operating lever rides over the tooth or cam projection 29 on the upper end of the lever 25 depressing said lever against the stress of the coil spring 28. When, however, the operating lever 14 has nearly reached the limit of its upward movement the cam projection 30 thereon passes by the cam projection 29 on the lever 25, so that when the said lever 14: commences its downward movement the abrupt faces of the cam projections 29 and 30 will be in contact, thus causing the operating lever to impart, through the said lever 25, a slight additional forward movement to the rutliing blade carrier; but as soon as, in the downward movement of the operating lever 14:, the tooth or cam projection 30 on said lever passes by the tooth or cam projection 29 on the lever 25 the forward movement of the ruftling blade carrier ceases and the backward movement thereof is elfected from said operating lever 14 through the connec tions such as are described in said Patent No. 983,048, hereinbefore referred to.

From the foregoing it will be apparent that the provision of the lever 25 and its operating cam projection 29, in cooperation with the cam projection 30 on the lever 14:, enables the final forward movements of the ruiiiing blade to be effected during the first part of the descent of the operating lever 1a with the needle-bar, instead of having said forward movements fully completed at the upward movements of the needle-bar, as in similar rutllers heretofore made. From this it results that, in the operation of the improved ruffler, the forwardmovements of the ruftling blade will be completed at the time when the needle thread is held taut by the takeup, as hereinbefore stated.

I do not herein claim broadly the combination, in a sewing machine rufller, of an operating lever so connected with the ruffling blade carrier as to impart a forward movement to said ruflling blade on the upward movement of said operating lever with the needle-bar of the machine, and means for imparting an additional forward movement to said ruifling blade during the first part of the downward movement of said operating lever with the needle-bar; as such combination, broadly considered, is the invention of Emanuel J. Boyler and is claimed in his application Serial No. 602,337, filed January 12, 1911, the present invention being an improvement upon the rufiler of the said Boyler application.

Having thus described my invention I claim and desire to secure by Letters Patent:

1. In a sewing machine ruffler, the combination with an operating lever adapted to be actuated from the needle-bar of a sewing machine, of a ruffiing blade, a rufliing blade carrier, means for imparting a forward movement to said ruiiiing blade and its carrier during the upward movement of the said operating lever, and an auxiliary lever actuated from said operating lever and by means of which the last part of the forward movement of the milling blade may be effected during the first part of the downward movements of said operating lever.

2. In a sewing machine ruffler, the combination with an operating lever adapted to be actuated from the needle-bar of a sewing machine, of a ruflling blade, a ruftling blade carrier, a pendulous lever actuated from said operating lever and connected with said ruifling blade carrier to impart a forward movement to said carrier and blade during the upward movement of said operating lever, an auxiliary lever also connected with said ruffiing blade carrier, and opposing teeth or cam projections on said auxiliary lever and said operating lever; whereby, during the first part of the downward movement of said operating lever, an additional forward movement will be imparted to said rufliing blade and its carrier.

3. In a sewing machine ruliier, the combination with an operating lever adapted to be actuated from the needle-bar of a sewing machine, of a ruffling blade, a rufiling blade carrier, a pendulous lever actuated from said operating lever and connected with said ruffling blade carrier to impart a forward movement to said carrier and blade during the upward movement of said operating 1e-- and said operating lever; whereby, during the first part of the downward movement of said operating lever, an additional forward movement will be imparted to said ruffling blade and its carrier.

In testimony whereof I aifix my signature, in presence of two Witnesses.

WINSLOW R. PARSONS.

Witnesses:

R. R. MCKINNEY. F. L. LESTER.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G.

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