US442872A - Plaiting-machine - Google Patents

Description

(No Model.)

G. C. EMMONS. PLAITING MACHINE.

Patented Dec. 16, 1890.

, Q jnmuenlm-ie xfii mwnmumu Illllllllllllllfl a l 1 x I II WITNESSES ATTORNEYS UNITED STAT S PATENT @rrrcn,

CHARLES C. EMMONS, OF PIl"SBURG, PENNSYLVANIA.

PLAlTlNG-MACHINE.

SPECIFICATION forming part of Letters Patent No. 442,872, dated December 16, 1890.

Application filed June 26, 1890. Serial No 356,685. (No model.)

To all whom it may concern.-

Be it known that 1, CHARLES C. EMMONS, of Pittsburg, in the county of Allegheny and State of Pennsylvania, have invented certain new and useful Improvements in Plaiter- Blades for Sewing-Machines; and I do hereby declare the following to'be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it pertains to make and use it, reference being had to the accompanying drawings, which form partof this specification.

My invention relates to an improvement in plaiting apparatus for sewing-machines; and it consists in the construction and arrangement of parts, which will be more fully described hereinafter.

The object of my invention is to so construct a plaiter-blade for sewing machines of all classes that the forward end of the blade is given an oscillating or vibratory motion at the extreme forward movement of the blade and at the sametime allow alongitudinal adjustment thereof and the amount of oscillating movement which is given to the forward end of the blade to be adjusted at will.

Figure 1 is a top plan view of my plaiterblades and the mechanism for reciprocating them. Fig. 2 is an enlarged top plan view of one of the blades alone. Fig. 3 is a vertical section of Fig. l.

The mechanism here shown for reciprocating the plaiter-blades is similar to that shown in Patent No. 432,215, granted February 25, 1890, to C. M. I-Iine, and which consists of a horizontal shaft A, carrying two cams B and a ratchet-wheel C, which is acted upon by a pivoted spring-actuated pawl D, to which pawl is pivotally connected a connecting-rod E, the opposite end of which is loosely connected with the sewing mechanism, and by which the pawl is operated in the manner shown in the said patent. I here show the ratchet-wheel connected to one end of the shaft instead of between the two cams, as shown in the patentabove referred to. This, however, forms no part of my invention, and may be secured to the shaft in any desired relation to the cams.

Moving 0r sliding in suitable standards F F, which rise from the machine bed-plate, are the plaiter-blade rods G, to which the pivoted at their upper ends in suitable sup ports and are engaged by the cams upon the shaft as the shaft is made to revolve. Through the medium of this mechanism just described, all of which is substantially the same as shown in the patent herein referred to, the rods G are reciprocated and carry the plaiter-blades back and forth with them. The standard F and the adjacent cam B are both longitudinally adjustable upon the shaft A, thus regulating the distance between the mechanism supported by the standard F farther from or nearer to the standard F and the mechanism supported thereby, so as to accommodate the machine to operate upon different widths of material.

My improvement relates to the construction of the plaiterblades, which, instead of being attached directly to the hangers H, as shown in the said patent, are connected attheir outer ends to the inner end of a lever or lateral arm L, which is pivoted between its ends at any suitable point to the hangers by means of .a pivotal bolt or screw M. The opposite end of this lever, from which the plaiter-blades are connected, extends outward beyond the socket of the hanger any desired distance, and is engaged by a suitable spring N, which has its opposite end connected to the hanger. By means of this spring the plaiter-blades are normally held at right angles to the shaftA or parallel to each other, as shown in solid lines in the drawings.

Passing into the standards F and F are the adjustable screws P, with which the outer ends of the levers L engage when the plaiter-blades have moved inward to the extreme limit of their inward movement. This screw P (or other suitable stop) is made adjustable in relation to the movement of the levers L, for the purpose hereinafter described.

When the plaiter-blades are forced inward by means of the cams and the levers J and reach the extreme of their inward movement,

the outer ends of the levers L engage the adjustable stops P, which causes the levers L to oscillate or vibrate, thus throwing thei-nner ends of the plaiter-blades from eachother, as

shown in dotted lines in Fig. 2. This oscillating movement of'the inner ends of the plaiter-blades draw the material tight and smoothbetween the two stitching mechanisms, and which, by smoothing the material and causing it to travel in a direct line without becoming folded, loose, or flabby between the two stitching mechanisms, hold the plaits and assist very materially in their formation. By giving the inner ends of the plaiter-blades this oscillating movement the plaits of the material, while being sewed to a stiff backing, are held firmly in their place and drawn tight between the two lines of stitchin g. The steps P being made adjustable, the oscillation of the inner end of the blade can be increased or diminished at the pleasure of the operator or in accordance with the quality of the goods being operated upon. Vhen the blades are forced forward in forming the plaits, they move in a direct straight line, and the setserews or adjustable stops P are so adjusted that just as the needle descends the blades stretch the goods by their oscillating movement, and immediately. after the needle rises the blades resume their original position by means of the spring N and return in a direct line backward ready to be again forced directly forward for the purpose of forming another plait.

Having thus described my invention, I claim-- 1. The combination, with a sewing-machine, of a reciprocating pivoted plaiter-blade having a lateral projection upon one side of its pivotal point and a stop upon the machine near the limit of the inner movement of the blade and in the path traveled by'the said lateral projection, whereby the blade is given a lateral movement at its inner end at the end of its inner reciprocating movement, substantially as shown and described.

2. The combination, with a sewing-machine having a stop, of a pivoted plaiter-bl-ade having a lateral projection which engages the stop and a spring for returning the blade to position,substantially as described.

3. The combination, with a sewing-machine having a stop, of a plaiter-blade having a laterally-extending arm which is provided with a bearing between its ends, and a spring which engages thesaid arm,substantiallyasspecified.

at. The eombination,with a sewing-machine having a stop, of a plaiter-blade hanger, a plaiter-blade pivoted thereto, having a laterally-extending arm which engages the said stop, and a spring which has one end engaging the hanger and its opposite end engaging the said arm, substantially as described.

5. The combination, with a sewing-machine having two stitching mechanisms, of apla'iterblade hanger for each mechanism, a plaitee blade pivoted to each hapgeie each blade having an arm which extends therefrom, and an adj ustable'stop for each arm, which is secured to the machine in theline traveled by the outer ends of the arms, whereby the inner ends of the planer-blades are given any desired amount of lateral movement, substam tially as shown;

6. The combination, with a sewing-machine having an adjustable stop, of a pivoted plait er-blade having a laterally extending arm which engages the adjustable stop, wherebythe inner end of the blade is given a lateral movement, and means for returning the blade to its first position substantially as shown.

In testimony whereof I aflix my signature in presence of two witnesses. I

CI-IAS. C. EMM'ONS.

\Vitnesses:

H. C. AVERY,

W. T. MASON.

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