US592806A - To the union - Google Patents

Description

(No Model!) 5 SheetS Sh et 1 L. MUTHER. E. C. HOLLAND & R. G, WOODWARD.

"SEWING MACHINE.

No. 592,806. Patented Now-Z, 1897'.

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on PtIYERS an. Pkcroumu,

(No Model.) 5 Sheets-Sheet 2.

L. MUTHER, EQC. HOLLAND & R. G. WOODWARD. SEWING MACHINE.

N0..59Z,-806. Patented NovQZ, 1897.

WIT/(885.51

(No ModeLj 5 Sheets-Sheet 3.

L. MUTHEILE. O. HOLLAND & R.G.' WOODWARD.

I SEWING MACHINE.

.No. 592,806. Patented Nov. 2,1897.

WITNESSES [NYE/V7058. m r ff,

(No Model.) 5 Sheets-Sheet 4..

L. MUTHERE. O. HOLLAND &- R. G. WOODWARD. SEWING MACHINE.

N0. 592,806. Patented Nov. 2, 1897.

5 Sheets-Sheef 5 (No Model.)

L. MUTHER, E. C. HOLLAND 8B R. G. WOODWARD.

' SEWING MACHINE.

N o. 5 92,8 06, PatentedNov 2, 1897. 5

Inventord ZQAQ @K? M M Witnesses.

Attorney.

UNITED STATES PATENT FFICE.

LORENZ MUTHER, OF OAK PARK, ELIAS CALVIN HOLLAND, OF AUSTIN, AND RUSSEL GREEN WVOODWARD, OF WAUKEGAN, ILLINOIS, ASSIGNORS To TH UNION SPECIAL ILLINOIS.

SEWING-MACHINE.

sE'wINefMACHINE COMPANY, OF CHICAGO,

SPECIFICATION forming part of Letters Patent No. 592,806, dated November 2, 1897. Application filed March 1, 1894. Serial No. 501,942. (No model.)

To aZZ whom it may concern:

More particularly our invention relates to I that class of sewing-machines in which a trimmer is employed to trim the edge of the material as it is stitched by the needles.

A portion of our invention relatesto means for adjusting the needle laterally with .ref-

erence to the/trimmer, whereby the material may be trimmed more or. less closely to the line of stitches as the lateral distance between the needle and trimmer is decreased or increased. In carrying out this portion of our invention We employ a swinging head or.

frame which carries the needle-bar and its needle and may be moved upon its fulcrum, so as to move the needle laterally with reference to the trimmer. This portion of ourin- 3o vention also includes devices for imparting, limiting, and adjusting the amount of lateral throw imparted to the swinging frame and its needle-bar and needle.

Another portion of our invention relates 3 5 to devices for throwing the trimmer into and out of action, whereby the same may be accomplished quickly and easily and without suspending the stitching operation. For this purpose we employ a power-actuated part, a slide or movable piece operated by, the poweractuated part and movable to and from the center of movement thereof to vary the extent of movement imparted to the slide by the poweractuated part, and suitable powertransmitting connections between the slide and the trimmer, whereby the movements of the trimmer depend upon the movementsimparted to the slide by its power-actuated .part. When the slide is moved into substantial coincidence with the axis of the center of movement of the power-actuated part,no effective movement is imparted to the slide, and consequently the trimmer is not operated. Theoperation of the .trimmer is thus controlled by the movement of the slide. 1 Our invention also includes certain improvements in the devices ,for locking the presser-foot with reference to the needle-bar frame.

. We shall now refer to the accompanying 6o drawings for the purpose of more explicitly describing our improvements.

- Figure 1 is a front elevation of a sewing and trimming machine embodying our improvements with the cloth-plate in longitudinal section to expose the lower portions of the machine. Fig. 2is rear elevation of the same withthe cloth-plate removed. Fig.3 isafront end elevation of the machine. Fig.4 is a transverse vertical sectional View on the line w x of Fig. 2. Fig. 5 is a perspective View of the head of the overhanging arm, with details of the devices for moving the swinging needlebar frame or head. Fig. 6 is a perspective view .of the detached swinging needle-bar frame or head and of the presser-foot catch which it carries. Fig. 7 isa perspective view of the detached presser-foot and frame. Fig.

8 is a similar view of the detached trimmerheadu Fig. 9 is a similar-view of a portion of the trimmer actuating and controlling devices. Fig. 10 is a perspective View of a portion of the cloth-plate, illustrating our improvements in the needle-plate. Fig. 11 is an enlarged perspective view of the head end of the machine.

For the purpose of more clearly explaining our improvements we have shown them applied to a sewing-machine of the general character described in Letters Patent No. 299,568, 0 grantedJune 3, 1884, to L. Mother and Charles A. Dearborn.

A is the base-frame, B the overhanging arm, and O the driving-pulley on the shaft 0.

D is the needle-bar, carrying the needle and operated by the rocking needle-arm B, which is rocked from an eccentric c on the shaft 0 through the eccentric-rod C E is the looper, carried by a rocking frame E, pivoted, as at e, to a transversely-rocking frame E journaled as at e c.

F is a pitman connected with the looperframe E at one end and at the other end with the rocking needle-arm B, by which it is reeiproeated to rock the looper-frame E upon its pivot e. The frame E is rocked transversely by a cam on the shaft C, working in a frame E carried by the frame E.

G is the presser-bar, carrying the presserfoot g. G is the presser-bar lifter.

II is the needle-plate, provided with-the spring cutter-plate it.

So far as we have described the machine it is of well-kn own construction. In addition to the parts referred to it embodies such other parts as are usual to sewing-machines of this character.

I is the needle-bar frame or head, hinged, as at t', on a transverse axis to the head B of the overhanging arm 13, and is provided with vertical guides I I for the needle-bar D. The needle-bar is thus guided in this pivoted head-frame I, which is free to swing upon its hinge or pivot 6, thus moving the needle-bar and needle laterally.

I is a projecting arm ofthe head I, having a curved notch 1 which receives a cam J on a rocking stud J, journaled on a bearingjin the head 13 01? the overhanging arm 13. By

rocking the stud J and its cam J the head I may be rocked or swung on its pivot 11.

To rock the stud J and its cam, it may be provided with an arm J To hold the stud J firmly in its hearing, so as to prevent accidental movement, we employ a spring J upon the rear end of the stud J, bearing against the rear face of the head B and held by a nut J on the threaded end of the stud. (See Figs. 2 and 5.) By tightening the nut J the tension of'the springmay be increased, thus drawing the stud into its bearing and holding it against accidental movement. The spring also acts to take up wear and thus to prevent the stud becoming loose.

To limit the throw of the cam J, and thus the movement of the swinging head I, we employ stops K K, carried by the head of the arm B and located on each side of a pin or lug J 011 the cam J or stud J. These stops K K may be made with eccentric heads 76 7;, so that by turning either stop the limit of throw of the cam J in either direction, and consequently the throw of the swinging head I, may be adjusted. The stops K K are preferablyconstructed as pins journaled in bearings 7; If, in the head B and held by nuts 76 on their rear ends.

L is the trimmer bar or frame, which carries the trimmer Z and is carried and guided on the presser-bar G. The trimmer-frame is provided with vertical guides L L, by which it is guided in its reciprocations upon the presser-bar G.

The upper end of the frame L is connected, as at Z, through a connection L to an arm L of a rock-shaft M. The rock-shaft M is journaled in bearings m m in the casting or arm 13 and is provided at its rear end with an arm M.

'N is a connecting-rod connected at its upper end with the arm M" and provided at its lower end with a slide N, which is guided on a power-actuated part 0, as upon the transverse rod 0, and is adjustable thereon to and from the center of movement of the poweractuated part 0. The power-actuated part is shown as a rocking frame 0, j ournaled, as at o, in a frame 0 at the back of the machine, and is rocked at its forward end by a cam C on the shaft 0. Ve have shown this cam C working in a slide C", located between ways 0 in the rocking frame 0. (See Fig. 9.) As the frame 0 is rocked by the cam a reciprocating movement is imparted to the connecting-rod N. The shaft M is rocked through the arm M and transmits motion through the arm L and connection L to the trimm erframe L and trimmer Z. The operation of the trimmer is thus controlled by the movement of the connecting-rod N, and to throw the trimmer into or out of action it is necessary to control the operation of that red. This is accomplished by means of the slide N, for, as the extent of movement of the rod N depends upon the distance of the slide N from the center of movement or fulcrum 0 of the power-actuated part or rockin g frame 0, it is apparent that when the slide N' is moved upon its guide-rod O to a position in line with the fulcrum 0 no effective movement will be imparted to'the rod N by reason of the roeking of the frame 0'. Consequently to throw the trimmer Z out of action it is only necessary to move the slide N back upon the rod 0 into a position adjacent to the fulcrum 0. To permit the slide to be thus moved back into a position substantially coincident with the fulcrum 0, the frame 0 is extended, as at 0, beyond the fulcrum, and the rod N is correspondingly lengthened, so that when the slide N is moved back its center or point of connection with the rod N will be substantially coincident with the fulcrum 0.

To move the slide N back and forth on its guide 0, we employ a lever I, pivoted at its upper end, as at p, to the casting or arm 13 and connected at its lower end, which extends through a slot in the cloth-plate A, with the slide N, as through a link I". For operating the lever it is provided with a projecting arm or handpiece P above the cloth-plate, and this operating arm or handpiece may be locked in its two extreme positions by means of a spring-catch Q, carried by the casting or arm 13 and engaging notches q q in the piece P This catch or lock by locking the arm or handpiece P also looks the slide N in either adjusted position and prevents accidental movement thereof.

R is a presser-foot catch carried by the head I and having an upturned lug or end 1'.

S is the presser-foot arm, which carries the roller presser-foot g and is hinged, as at s, to a collar or clamp S, by which it is secured to the presser-bar G.

T is a catch (shown notched or forked) carried by the presser-foot arm S and adapted to engage the lug or end 'rof the presser-foot catch R. We prefer to construct the catch T with provision for lateral adjustment upon the arm S, and for this purpose have shown it attached to the arm S by a pin and slot 75.

In Fig. 1 the catch T is shown engaged with the catch R. It is apparent that the presserfoot frame S and its foot 9 will move with the head I and needle cl. When the presser-bar G is lifted by the lifter G, the catch T is lifted from engagement with the catch R and the presser-frame may be swung away from the needle (1 on its hinge 8. When the frame S is swung back and the presser-bar G is lowered, the catches T and R will again engage.

From the foregoing description the opera tion of the apparatus will be readily understood.

Supposing the parts to occupy the relative positions shown in Fig. l, with the needle 01 close to the trimmer Z, it is obvious that the material will be trimmed close to the line of stitches made by the needle. Whenever a wider margin is desired, the operator throws the cam J to the left in Fig. 1 by means of the handle J The cam when thus moved acts upon the notched arm I of the head I and swings the head upon its fulcrum i to the left. As the needle-bar D is carried by the head I, it is also moved to the left, and the needle d is moved laterally away from the cutter or trimmer Z, so that the material will be trimmed less closely to the line of stitches. As the head I swings upon the fulcrum t' in the head of the arm B, the needle d, when thus moved away from the trimmer, will be at a slight angle to the trimmer. As has been ex plained, the throw of the cam J to the right or left is limited by the stops K K, and this limit may be varied to increase or decrease the throw in either direction by turning these eccentric-headed stops.

The operator of the trimmer or cutter Z is under the control of the operator through the handpiece P When the handpiece is pulled forward into the position shown in Figs. 3, 4, and 9, with the catch Q engaging the rearmost notch q,"the lever I is moved forward on its fulcrum p and through the connection P "the slide N is moved forward on the guide 0, so that the connecting-rod N is reciprocatedup and down by the rocking frame 0. The rock-shaft M and trimmerhead L are therefore operated.

To throw the trimmer out of operation, the piece I is pushed back until the spring Q engages the foremost notch q. By this means the lever P is rocked backward and theslide N is moved rearwardly on the guide 0 into a position adjacent to the fulcrum 0, so that the rocking of the frame 0 does not impart effective motion to the rod N. The trimmerhead L therefore remains at rest. Thus by the simple movement of the handpiece P the trimmer Z is thrown into or out of operation and the use of clutches is avoided.

As the trimmer Z reciprocates in the act of cutting it passes between the edges of the needle-plate H and the spring-plate it. There is more or less wear upon the-edge of the plate H, so that it becomes dulled, and a less perfect cutting of the material results. For the purpose of permitting this edge to be easily sharpened we employ an elevated or raised portion 72. to form the cutting edge of the plate H, so that as the edge becomes worn the surface may be ground down to restore a sharp edge. i

We do not limit ourselves to the details of construction shown, as it is apparent that they may be modified without departing from the invention.

What we claim as new, and desire to secure by Letters Patent, is as follows: 1. In a sewing-machine, the combination with a stationary arm, of a pivoted adjustable needle-bar head supported by the stationary arm, a needle-bar guided in the needle-bar head and adjustable therewith, power devices to impart movement to the needlebai in the needle-bar head, a looper-needle pivoted on a horizontal axis and movable in a vertical plane, a trimmer having its cutting edges arranged transversely to the plane of reciprocation of the looper-needle, and devices for rocking the needle-bar head on its pivoted connection to adjust its lower end in a plane parallel with the plane of the looperneedleand transversely to the plane of the trimmer-blades and to maintain it in such adjusted position.

2. In a sewing and trimming machine, the combination with a trimmer, of a swinging needle-bar head provided withan arm extension, an adj usting-cam acting upon said arm extension to adjust the head and maintain itin adjusted position, adjustable stops to limit the throw of said cam, and the needle-bar and its needle guided in said swinging head.

3. In a sewing and trimming machine, the combination of the overhanging arm, the trimmer, a swinging head pivoted to the overhanging arm and provided with an arm extension, the needle-bar and its needle guided in said swinging head, and means to adjust the swinging head and maintain it in adjusted position, consisting of a cam J acting on the arm extension of the swinging head, carried by a stud J j ournaled in the head of the overhanging arm of the machine.

' 4. In a sewing and trimming machine, the combination of the overhanging arm, the trimmer, a swinging head pivoted to the overhanging arm and provided with an arm extension, the needle-bar and its needle guided in said swinging head, and means to move the swinging head, consisting of 'a cam J acting on the arm extension of the swinging head,

carried by a stud J jonrnaled in the head of the overhanging arm of the machine, the spring J between the rear end of the stud and the overhanging arm, and the fasteningnut J.

5. In a sewing and trimming machine, the combination of the overhanging arm, the trimmer, the swinging head pivoted to the overhanging arm and provided with an arm extension, the cam J acting on the arm extension to move the swinging head on its fulcrum provided with a projection J the eccentric stops K, K, located on each side of the projection J 5 to limit the throw of the cam in either direction, and the needle-bar and needle guided in the swinging head.

6. In a sewing and trimming machine, the

combination with the needle-bar and needle,

of a trimmer, a rocking frame, a slide carried by the rocking frame and movable thereon to and from the fulcrum of the frame, and powertransmitting connections between the movable slide and the trimmer, whereby the movements of the slide upon the frame to and from the fulcrum thereof will control the movements of the trimmer, and an operatinglever P connected with said slide.

7. 111 a sewing and trimming machine, the combination with the needle-bar and needle, of a trimmer, a rocking frame, a slide carried by the rocking frame and movable thereon to and from the fulcrum of the frame, powertransmitting connections between the movable slide and the trimmer, whereby the movement of the slide upon the frame to and from the fulcrum thereof will control the movements of the trimmer, an operatinglever P connected with said slide, and means to lock said lever in its two extreme positions.

8. In a sewing and trimming machine, the combination with the needle-bar and needle, of a trimmer, a rocking frame, a slide carried by the rocking frame and movable thereon to and from the fulcrum of the frame, powertransmitting connections between the movable slide and the trimmer, whereby the movement of the slide upon the frame to and from the fulcrum thereof will control the movements of the trimmer, a lever P connected with said slide, and handpieee P for operating the lever P.

9. In a sewing and trimming machine, the combination with the needle-bar and needle, of a trimmer, a rocking frame, a slide carried by the rocking frame and movable thereon to and from the fulcrum of the frame, powertransmitting connections between the movable slide and the trimmer, whereby the movement of the slide upon the frame to and from the fulcrum thereof will control the movements of the trimmer, a lever P connected with said slide, handpiece P for operating the lever P, provided with catches q, q, and a spring Q adapted to engage either of said catches and thus lock the lever P in its extreme positions.

10. In a sewing and trimming machine, the

combination with the needle-bar and needle, of a trimmer, a rocking frame 0 fulcrumed as at 0, a slide N carried by the frame 0 and movable thereon to and from the fulcrum, and connections between the slide N and the trimmer.

11. In a sewing and trimming machine, the combination with the needle-bar and needle, of a trimmer, a power-actuated part, a slide carried by said power-actuated part and movable thereon to and from the center of movement thereof whereby the extent of movement imparted to said slide by the power-actuated part may be increased or diminished as the slide is moved from or to the said center of movement, and power-transmittin g connections between said slide and the trimmer.

12. In a sewing and trimming machine, the combination with the needle-bar and its needle, of a trimmer, a rock-shaft M, connections between the rock-shaft M and the trimmer, a power-actuated part, a slide operated by said power-actuated part and movable to and from the center of movement thereof, Whereby the extent of movement imparted to said slide by the power-actuated part may be increased or diminished as the slide is moved from or to said center of movement, and connections between said slide and rock-shaft M, whereby the movements of the trimmer are controlled by the movements of the slide.

13. In a sewing-machine, the combination with a needle-bar frame and the needle-bar and its needle guided therein, of the presserbar, a presser-foot carried by the presser-bar 011 a hinged connection and provided with a catch-frame, and a catch on the needle-bar frame adapted to engage the catch-frame of the presser-foot when the presser-bar is lowered and hold it locked until the presser-bar is elevated.

1 f. In a sewing-machine, the combination with a needle-bar frame and the needle-bar and its needle guided therein, of the presserbar, a presser-foot carried by the presser-bar on a hinged connection and provided with a catch-frame, and a catch on the needle-bar frame adapted to enter the catch-frame of the presser-foot when the presser-bar is lowered and hold it locked until the presser-bar is elevated, the catch-frame carried by the presser-foot being susceptible of lateral adjustment.

15. In a sewing-machine, the combination with the needle-bar frame and the needle-bar and its needle guided therein, of the presserbar, the presser-foot frame S hinged to the presser-bar, the presser-foot carried by the presser-foot frame, the notched catch-frame T carried by the frame S, and the catch R carried by the needle-bar frame and having the upturned end 7' adapted to enter the notch of the catch-frame T when the presser-bar is lowered and lock the presser foot frame against lateral movement.

16. In a sewing-machine, the combination with a trimmer, of a pivoted needle-bar head provided with an arm extension, means to act upon said arm extension to adjust the head and maintain it in such adjusted position, adjustable stops to limit the swing of said needle-bar head, and the needle-bar and its needle guided in said pivoted needle-bar head.

17. In a sewing-machine, the combination with a trimmer, a pivoted needle-bar head, the needle-bar and its needle guided therein, a presser-foot, and means connecting the presser-foot and needle-bar head whereby they may be moved to and from the trimmer. 18. In a sewing-machine, the combination with a trimmer, a pivoted needle-bar head, the needle-bar and its needle guided therein, of a presser-footremovably secured to said needle-bar head and means for moving theneedle-bar head and presser-foot to and from the trimmer.

19. In a sewing-machine, the combination of a pivoted needle-bar head, the needle-bar and its needle guided therein, a presser-foot frame removably connected with the pivoted needle-bar head and means to adjust the presser-foot frame and presser-foot to and from the needle.

20. In a sewing-machine, the combination with a trimmer, a pivoted needle-bar head,

the needle-bar and its needle guided in'the needle-bar head, of a presser-foot,and presser-.

foot frame removably connected with the pivoted needle-bar head, and means to adjust the presser-foot frame and presser-foot to and from the trimmer.

21. In a sewing-machine the combination with a trimmer, a pivoted needle-bar head, the needle-bar and its needle guided therein, of a presser-bar, a presser-foot carried by the presser-bar on a hinged connection and removably secured to said pivoted needle-bar head and means for moving the presser-foot and needle to and from the trimmer.

22. In a sewing-machine, the combination with a trimmer, a pivoted needle-bar head, the needle-bar and its needle guided therein, of a presser-bar, a presser-foot frame carried by the presser-bar on a hinged connection and provided with a catch-frame, and a catch on the pivoted needle-bar head adapted to enter the catch-frame of the presser-foot frame when the presser-bar is lowered and hold it locked till the presser-bar is raised, and means for moving the needle and presserfoot to and from the trimmer.

presser-bar into position to act upon the cloth and to be disengaged therefrom when the presser-foot is moved out of action.

24. In a sewing-machine, the combination with a trimmer, of an adjustable needle-bar head, a presser-foot frame provided with a locking device, and a catch carried by the adjustable needle-bar head in a position to engage the locking device of the presser-foot frame when the presser-foot is lowered into operative position and to be disengaged therefrom when the. presser-foot is moved out of action.

25. In a sewing-machine, the combination of a trimmer, means connected with the trimmer forimparting motion thereto when said means are actuated, a power-actuated driving part, and intermediate connections between the power-actuated driving part and "the means connected with the trimmer, having provision for adjustment to vary the extent of movement imparted to said means connected with the trimmer, whereby the extent of movement of the trimmer may be varied by. the adjustment of said intermediate connections.

26. In a sewing-machine, the combination with the rock-shaft M, and mechanism operated thereby, of a power-actuated driving part and intermediate connections between the rock-shaft M and the power-actuated driving part having provision for adjustment to vary the extent of movement imparted to the rock-shaft and the mechanism operated thereby.

In testimony of which invention we have hereunto set our hands.

LORENZ MUTI-IER. ELIAS CALVIN HOLLAND. RUSSEL GREEN WOODWARD.

IVitnesses:

W. S. NORTH, O. MoNEIL.

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