US976399A - Sewing-machine. - Google Patents

Description

M. G. & A. RO'SENTHAL.

SEWING MACHINE.

APPLICATION FILED. FEB. 2s, 1910.

976,399. Patented Nov. 22, 1910.

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M 9. 9 A.' ROSENTHAL.

SEWING MACHINE.

APPLICATION FILED FEB. 2s, 1910.

Patented Nov..22, 1910.

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M. G. 6L A. ROSENTHAL.

SEWING MAGHINE.

APPLIOATION FILED Fm'a. 28. 1910.

Patented Nov. 22, 1910.

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APPLIUATION FILED PEB. 28,- 1910. 976,399. Patented N0v.22, 1910.

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NTTED STATES PATENT OFFICE.

MORRIS G. ROSENTHAL, OF MENTOR, OHIO, AND ARTHUR ROSENTI-IAL, 0F GRAND RAPIDS, MICHIGAN.

SEWING-MACHINE.

Speccation of Letters Patent.

Patented Nov. 2.2, 1910.

Application filed February 28, 1910. Serial No. 546,569.

To all 'whom "Lt may concern.'

Be it known that we, MORRIS G. ROSEN- THAL and ARTHUR RosnN'ri-IAL, citizens of the United States, residing at Mentor, Lake county, Ohio, and Grand Rapids, Kent county, Michigan, respectively, have invented certain new and useful Improvements in Sewing-Machines, of which the following is a specification.

Our invention relates to improvements in the attachments to sewing machines secured to us by Letters Patent of the United States numbered 948,345, issued February 8, 1910, and its objects are: First, as with our patent hereinbefore mentioned, it is designed to sew labels, patches, trade mark slips Sac., upon fabric, either in the piece or upon manufactured articles. Second, to remove the labor of operating the attachment from the needle bar and placing it upon the shuttle shaft, thus greatly lessening the labor upon the needle bar crank and shaft., and the necessary labor of running the attachment. Third, to provide a means for immediately stopping the machine when the label or other object has been fully sewed upon the fabric. Fourth, to provide a means whereby the length of the stitch may be readily adjusted. Fifth, to provide an attachment of the' class named with which any desired form of patch or label may be readily provided for .without material change of parts, and, sixth, to provide a means whereby the first and last few stitches in a label, patch or other attachment to the fabric, will overlap and thus double the strength of stitching at this point and avert the danger of the stitches raveling out 0r the label ripping off of the fabric.

vWe attain these objects by the mechanism illustrated in the accompanying drawing, in which-- Figure 1 is a front elevation of a sewing machine with our attachment in place. Fig. 2 is a plan of the same with the machine arm cut off on the line aq a: of Fig. 1. Fig. 3 is a rear elevation of the machine with a part of our attachment in place. Fig. 4 is an end view of the base of our attachment with the actuating arm out off on the line g/ y of Fig. 9 to show the manner of securing the pivot plate to the base. Fig. 5 is a perspective of the back actingpawl and its supporting slide. Fig. 6 is an elevation of our attachment looking to the left from the line a e of Fig. 2. Fig. 7 is a plan of the same. Fig. 8 is'an elevation of the lever, plate and spring that holds the fabric and label when the label is being sewed on. Fig. 9 is a plan of the base and actuating arm showing the gear wheel and form used for sewing on oblong labels. Fig. 10 is an enlarged perspective view of the fabric holding plate, arm, and adjustable foot, showing the lower edge of the foot serrated. Figs. 11 and 12 are enlarged elevations of the oscillating lever that actuates the connecting rod that actuates the feed wheel. Fig. 13 is a sectional view on the line x of Fig. 11, and Figs. 14 and 15 show two forms of shifting rods for shifting the driving belt.

Similar letters refer to similar parts throughout the several views.

In the construction and application of this attachment, we provide a base C that is designed to be firmly secured to the bed B of the sewing machine. To this base C is firmly secured two cleats, C', designed to receive and firmly hold the pivot plate C in such a manner that by loosening the screws or other devices with which they are secured to the base, the pivot plate may be readily slid sidewise to change the pivot point of the actuati'ng arm D to increase or diminish the movement of the fabric holder composed of the plate E, the clamping arm E and the adjustable foot E, and we, also, provide a guard, as cZ, which forms a slot through which the actuating arm D may pass and work freely, either sidewise or lengthwise. The fabric holder consists of a plate E that lies parallel with, and directly adjacent to the upper surface of the bed B. This plate is provided with standards e to which is pivoted the lever e of the clamping plate E. The plate E is firmly secured to the actuating arm D, as atcl, and has a bolt F pivotally secured to it and passing up through the clamping plate E', above which is a spring F and a regulating nut F, by means of which the pressure of the foot E" is regulated. The foot E is to be made of the exact form that the line of stitching is to be made, and the opening 6 (see Fig. 10)

through the plate E, in which the foot is supported, must be made to practically correspond, though a considerable divergence may be made so that different forms of foot may be used in the same opening providing the widths correspond. This foot is pivotally supported upon the plate E, as indicatedat c, so that it may readily adjust itself to the surface of the fabric Z) upon which it bears. The lower edge of this foot may be made plain, or it may be serrated as shown in Fig. 4, as desired and as found most effectual in holding and carrying the fabric, indicated at The cord V at-t-ached to the end of the arm e is designed to extend down to position, and to be connected or arranged that it may be acted upon by the foot'of the operator to open and close the clamping device. That is, by drawing downward upon the cord the back end or arm e, of the plate E is drawn downward and the foot E is raised up off of the fabric b, and when the cord is released the spring F will' force the plate E andthe foot E down solidly upon the fabric. l

The actuating arm D, being pivoted 'at c and: arrangedv to move freely in alldireotions beneath the guard eZ, is actuated as followszIn the back end of the arm D'vwe form an opening with inwardly projecting teeth D therein. This opening must beof a proper form to so carry the foot E in the proper directions and positions as to form the desired lines of sewing. To the back end of the base C is attacheda block or form, as D, which must be of a proper form to cause the gear wheel-D to mesh firmly but freely with the teeth D as the arm is carried to the severalpositions necessary for forming the desired line of stitching. The forms shown in Fig. Y9 of our dra-wings are those now in use by us yfor forming an oblong line of stitching, as indicated' by the foot E shown in Fig. 2, it being understood that the movement given the foot by these forms is exactly right to cause the needle a to form the lines ofstitching close to the inner surface of the foot. That is, the foot E has vertical walls tha-t form a-n opening that must conform to the shape of the label to be attached, and the fabric and label are so moved that a label ofthe desired form may be stitched to the fabric.

' The shaft WV, upon which the gear wheel D is mounted, passes upwardv and is supported by the arm G, and the ratchet wheel G is firmly mounted thereon, and to operate Y the shaft W to actuate the arm D, a connecting rody is pivotally attached to the arm z', which is integralwith the plate Lwvhich plate isrevolubly mounted upon the shaft W and has a pawl I mounted thereon in position to engagev the teeth 0.1 1 ,the periphery of the wheel G so that said wheel, and with it` the shaft lV, will be moved the required distance with each alternate rcciprocation of the connecting rod J, the pawl Ibeing made to alternately engage the teeth on the wheel G by a spring, as L, as the needle approaches the end of its upward stroke.

The connecting rod J is actuated by the oscillating lever J which is pivotally connected with the standard K, as at j, and is provided with a slot j by means of which the pivot point of the lever may be changed to lengthen or shorten the stroke or movement of the upper end of this lever and, correspondingly, change the distance the pawl I is made to travel and move the wheel G. The lower end of the lever J is pivotally connected with the slide M which is made to reciprocate by the cam L with each oscillation of the shuttle shaft L, or, in case of a rotary shaft, with each revolution of the shaft. It will be readily seen that by this means, the changing of the pivot point at 7" will correspondingly change the movement of the wheel G. Thus, if the pivot point j is placed Well down toward the lower end of the slot j, the movement of the upper end of the lever J will be suiicient to cause the pawl I to pass back over two or more teeth on the wheel G and thus move it much farther than if the pivot point is placed far enough up in the slot to reduce the movement of the pawl to a single tooth, and as the actuating arm D and the plate E, with its connections, are actuated by the movements of the wheel G, as hereinbefore more fully described, the length of the stitches in the fabric is correspondingly changed.

In Fig. 13 we have shown the nut j and the standard K and lever J in section to more plainly show how the lever J is pivoted to the standard. In this case the bearing` j is made longer than the thickness of the standard so that with the washer j forced solidly against it by the nut y" the bearing may turn freely in the standard to allow the lever to be adjusted as desired.

We provide for shifting the driving belt and suddenly stopping the sewing machine by placing a loose pulley as O, immediately adjacent to the tight, or driving pulley O. Te then place a reciprocating shaft, as S,

Vin bearings that are att-ached to, or are integral with the base B. In the construction of this shaft we prefer that the body portion of the shaft be made of a uniform size, as indicated in Figs. 2 and 3, and be provided with an annular groove, as s, which is designed to receive the latch U to hold the shaft to place where it will cause the belt R to act upon the driving pulley O to drive the machine. Each end of this shaft should be made so that it will slide freely in its bearing, but cannot slide but a given distance. At one end of this shaft a coiled, or other suitable spring, as S, is so placed as to force the shaft, lengthwise, so that when the latch U is raised out of the groove s the shaft will be suddenly forced endwise and will, through the action of the shifter lever Q upon the belt R, force t-he belt off of the driving pulley 0 and onto the loose pulley O, and thus stop the machine. As the machine would be likely to run several revolutions after the belt R has been shifted to the loose pulley, and as it is desirous that it should be stopped quickly, and so that the needle bar will always be on the up stroke, it is necessary to provide some auxiliary means of so stopping` it, and for this purpose we have formed a shoulder 0 in the periphery of the fly wheel O, as indicated in Fig. 1, and have pivoted a lever P to the standard of the machine, as vat p, in such a position that the upper end of said lever may be made to engage with, or be disengaged from the shoulder o and when made to engage said shoulder it will stop the machine instantly and always with the needle a up out of, and clear from the fabric ZJ, or in the position indicated in Figs. 1 and 3. This lever is actuated to throw it into contact with the shoulder 0 by means of any available form of spring, as indicated at P', or by any other available device; and to hold it out of contact with the shoulder and in position so that the machine may be run without interference therefrom, by the arm Q which is shown as being integral with the shifting lever Q. The shifting lever Q is secured to the shaft S, as at g, in such a manner that it must be carried therewith, as the shaft is moved endwise in the operation of the machine while we prefer that the shifter Q and the arm Q be made integral, as indicated in Figs. l and 14, the same results may be attained by the use of separate shifters, as indicated at Q and Q in Figs. 2 and 15.

The shaft S may be made of uniform size, if desired, and collars applied to prevent it from being forced too far by the spring S, but we prefer that the ends be made smaller, as shown at S, to form the necessary shoulders for actuating and stopping the shaft, as they are less likely to be moved by the sudden movement of the shaft, and to allow the shaft to move too far at any time.

We provide for disconnecting the latch U from the groove s in the shaft S, by pivoting a plate U to the base B of the machine, as at u, in such a position that when it stands in its normal position the latch U may rest upon it and extend down nearly to the bottom of the groove s. This plate is held in its normal position by any available form of. spring, as W, attached at one end to the plate, as at fw, and at the other end to the base, as at w', and is actuated to throw it up to the position of its dotted lines, by means of a cable, or other flexible connecting element, as U, attached at one end to the upper corner of the plate and at the other end to the arm e, in such a manner that when the arm e has moved far enough to the right, as indicated by its dotted lines in Fig. 3, the plate will be moved sufficiently to raise the latch out of the groove s and the spring S will force the shaft suddenly to the right, with the result hereinbefore stated.

We provide for doubling the line of stitching for a short distance at the beginning and ending of the sewing of the labels, where the beginning and ending of the stitching is at the same point on the label, by placing a grooved slide, as H, having a pawl H pivoted to it, as at It, see Fig. 5, upon the top of the wheel G in such a manner that teeth g, see Figs. 1, 2, 6 and 7, will extend up into the groove t and hold the plate in place so that when the plate is drawn backward the point of the pawl H will engage these teeth and draw the wheel G backward a short distance. This plate and pawl is held to normal position by means of any available form of spring, as indicated at H in Fig. 7 and may be drawn backward at the proper time, and the proper distance, by means of a cord, or other suitable device, as g, secured at one end to the pawl H in position to draw downward upon it, and at the other end to the shaft S, so that when the shaft is thrown suddenly back, as here inbefore described, the sudden action of the cord g upon the pawl H will draw its point downward into engagement with the teeth g, and at the same time it will engage the upper corner of the pawl I and move the pawl I away from contact with the ratchet wheel G, and will draw the slide H, and with it, the wheel G, backward far enough so that the first three or four stitches in the label and fabric will be started back of the point where the last three or four stitches are sewed, thus greatly strengthening the sewing at this point and averting the danger of the labels becoming disconnected from the fabric at this point. if, and It represent stops that are secured to the yoke G to hold thel slide H to place on the wheel G, as indicated in Fig. 7

The slot c in the actuating arm D must be made long enough to provide for all necessary longitudinal movement of the actuating lever, and of a proper width so that the antifriction roller c may move therein without danger of either becoming set so plate,

that the arm can be moved only with difficulty, or of being so loose .that the arm may vary from a direct movement.

The cord or cable` T, shown in Figs. l and 3, is attached, at one end, to the Vend of the shaft S, and, passing over the antifriotion roller or pulley T, it extends down to position where it may be actuated by the foot of the operator, by means of a t-readle or otherwise, to Ydraw the shaft S back'V to place to throw the belt R upon the driving pulley O and start the machine, when desired.

While this attachment is made expressly for sewing on labels, tabs, &c., it is equally available for reinforcing a line of stitching, and for many other uses in general manufacturing business, all of which come within the intent of the3invention.

Vhat we claim as. new, and desire to secure by Letters Patent kof the United States, is: f Y

l. In combination with a sewing machine, an attachment constructed with a base to be secured, to the machine bed, an actuating arm slidingly and pivotally mounted on saidV base, a plate secured to said actuating arm, a. clamping plate pivotally secured to said a spring for holding said clamping plate'iirmly against the first named plate, a form having inwardly projecting gear teeth,

t the back end of the actuating arm, a gear wheel meshing with said gear teeth, a ratchet wheel .and pawl for actuating said gear wheel, a cam and shaft beneath the machine bed, a slide actuated by said cam, an oscillating lever connected at one end with said slide, a connecting rod connecting the other end of said lever with the pawl, substantially as and for the purpose set forth.

2. VIn combination with a sewing machine and its bed and shuttle shaft, a base secured to the machine bed, a shaft mounted on said base and carrying a ratchet wheel and pawl and a gear wheel, a cam mounted on the shuttle shaft, a slide actuated by said cam, Aanoscillating lever actuated by said. slide, a connecting rod connecting said lever with the, pawl to actuate the ratchet wheel'Y therefrom, an actuating arm mounted on the base, gear teeth formed at one end of the said arm in position to be engaged by the gear wheel, a forming block secured to the base, a guide at the end of the actuating arm to engage said block to guide the gear wheel in the form, a clamping plate secured to the actuating arm, an adjustable foot i-nsaid clamping plate formed to shape the desired lines of stitching, and means for actuating said clamping plate.

8.1n combination with a sewing machine and its bed and shuttle shaft, a base secured to the bed of the machine, a movable pivotal shaft to place,

bearing on said. base, mounted on said pivotal manner that it may be made to, at once, oscillate and move longitudinally thereon, and having an opening in one end with gear teeth projecting into said opening, a gear wheel to mesh with said teeth to actuate said arm, a clamping plate secured to the end of said arm, and having an opening through it in its line of travel under the needle, a supporting arm mounted on the base, a shaft mounted on said base and arm, a ratchet wheel and pawl and a gear wheel mounted on said shaft, a slide connected with and actuated by the shuttle shaft, an oscillating armV andl connecting rod connecting said slide and the pawl to actuate the ratchet wheel, a sliding shaft mounted on the machine bed back of the base, a latch for locking said a spring for actuating said shaft when the latchy is disconnected, a tight and loose pulley and a driving belt, a shifting arm on the said shaft for shifting the belt from the tight pulley to the loose pulley and back at the exact time that a given point on the plate approaches theA needle, and means for drawing said shaft lengthwise against the spring, substantially as shown and described.

4. In combination with a sewing machine bed and shuttle shaftand the balance wheel and tight, and loose pulleys for running a sewing machine, a base secured to the bed, an arm connected with said base, a shaft supported by said base and arm, a ratchet wheel and pawl, and a gear wheel mounted on said shaft, a slide connected with and actuated by the shuttle shaft, an oscillating lever and connecting rod actuated by said slide and actuating the pawl and ratchet wheel and shaft, an actuating arm actuated by the gear wheel on the ratchet shaft, clamping plates mounted on one end of said arm and arranged to be moved by said arm to sew stitches in various directions, means for opening and closing said clamping plates, a longitudinally movable shaft mounted back of the actuating arm, a shifting arm on said shaft, a belt on one of the pulleys arranged to be shifted from one to the other with the shifting arm at the exact time that a given point on the plate approaches the needle, a lever mounted on the machine in position so that the upper end comes in contact with the balance wheel, a shoulder on the balance wheel in position to be engaged by said lever, means for actuating said lever to suddenly stop the machine when the sliding shaft is moved to throw the belt upon the loose pulley, a spring for actuating the slidin shaft, a latch for holding it to position` an means for drawing the shaft to position under the latch substantially as shown and described.

an actuating arm bearing 1n` such a 5. In combination With a sewing machine and its bed and shuttle shaft a base secured to the bed of the machine, an arm mounted on said base, a shaft mounted on said base and arm, a ratchet Wheel and paWl mounted on said shaft, an actuating arm and clamping plates mounted on the base and actuated by the shaft, means for actuating said ratchet Wheel and shaft from the Shuttle shaft, a second set of ratchet teeth formed on the surface of the ratchet Wheel, a sliding pawl mounted in position to be made to engage said teeth, and means for actuating Said pawl to move the ratchet Wheel and shaft backward, and, also, to return it to 15 normal position, substantially as and for the purpose' set forth.

Signed at Mentor, Ohio,February21, 1910.

MORRIS G. ROSENTI-IAL. In presence of- FLORENCE IVOODFORD, E. V. BoLI. Signed at `Grrand Rapids, Michigan, February 24:, 1910.

ARTHUR ROSENTI-IAL. In presence of- I. J CILLEY7 LOUIS CILLEY.

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