US435686A - Sewing-machine for barring button-holes - Google Patents

Description

7 7 SheetsSheet 1.

(No Model.)

H. H. CUMMINGS. SEWING MQGHINE FOR EARRING BUTTON HOLES. .No. 435,686.

Patented Sept. 2, 1890.

Am/44 W 7 Sheets-Sheet 2.

(No Model.)

H. H. CUMMINGS.

I SEWING MACHINE FOR EARRING BUTTON HOLES. No. 435,686.

Patented Sept. 2, 1890.

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(No Model.) 7 Sheets-Sheet 3.

H. H. CUMMINGS. SEWING MACHINE FOR EARRING BUTTON HOLES.

No. 435,686. Patented Sept. 2, 1890.

\A/lT'NESSES-n INVENT (No Model.) 7 Sheets-Sheet 4.

H. H. CUMMINGS. SEWING MACHINE FOR BARRING BUTTON HOLES.

No. 435,686. Patented Sept. 2, 1890.

7 Sheets-Sheet 5.

' (No Model.)

H. H. CUMMINGS. SEWING MACHINE FOB EARRING BUTTON HOLES.,

No. 435,686. Patented Sept, 2, 1890.

7 Sheets-Sheet 6.

H. H. CUMMINGS. SEWING MACHINE FOR EARRING BUTTON, HOLES.

(No Model.)

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(No Model.) 7 Sheets-Sheet 7.

H. H. CUMMINGS. SEWING MACHINE FOR EARRING BUTTON HOLES.

No. 436,686. Patented Sept. 2,1890;

' INVENTU \A/ITNESSESH' UNITED STATES PATENT OFFICE.

HENRY II. CUMMINGS, OF MALDEN, ASSIGNOR TO THE UNION BUTTON SEWING MACHINE COMPANY, OF BOSTON, MASSACHUSETTS.

SEWING-MACHINE FOR BARRING BUTTON-HOLES.

SPECIFICATION forming part of Letters Patent No. 435,686, dated September 2, 1890.

Application filed April 2, 1889.

To all whom it may concern.-

Be it known that I, HENRY H. CUMMINGS, of Malden, in the county of Middlesex and State of Massachusetts, have invented certain new and useful Improvements in Barring and Tacking Sewing-Machines, of which the following is a specification.

My invention has relation to that class of sewing-machines commonly known as barring or tacking machines-that is, machines adapted to form a bar or tacking at the base or across the inner end of a buttonhole, the ends of pockets, &c.said bar being commonly formed by taking one or more long stitches at the point and in the direction that the bar is to be made and then stitching back and forth across such long stitches from end to end thereof.

My invention consists of improvements in machines of the class aforesaid, whereby their construction is greatly simplified, their operation rendered certain, and their adjustments readily effected, all as is hereinafter fully de scribed, and pointed out in the appended claims.

In the drawings hereunto annexed and forming a part of this specification, Figure 1 is a side elevation of a machine embodying my improvements. Fig. 2 is a top plan view of the same, the overhanging arm and its attached parts being removed or cut away. Fig. 3 is a bottom plan view. Fig. 4 is a top plan view of a portion of the parts shown in Fig. 2. Fig. 5 is a sectional View taken on the line 5 5, Fig. 3. Fig. 6 is a sectional view taken on the line 6 6,Fig. 2. Fig. '7 is a sectional view similar to Fig. 6, but showing some of the parts in a different position. Fig. 8 is a sectional detail view of the cloth-plate-actuating cam and its immediately-associated parts. Fig. 9 is a sectional detail view taken on the line 9 9 of Fig. 4. Fig. 10 is a sectional detail view taken on the line 1O 10 of Fig. 4:. Fig. 11 is a bottom plan view of the lever immediately connected with the cloth-plate and support to actuate the same. Fig. 12 is a diagram showing the character of the stitching performed.

The same letters and figures designate the same parts in all of' the views.

In the drawings, A designates the bed of the machine; 13, the overhanging arm; 0, the

Serial No. 305,735. (No model.)

main shaft; D, the driving-pulley on the main shaft; E, the shuttle mechanism on the forward end of the main shaft; F, the needle-bar; G, the needle; II, the needle-bar-operating shaft; I, the pitman connecting the shaft II with the main shaft; J, the eccentric on the main shaft for actuating the pitman I; K, the

presser-bar, and L the presser-foot.

All of the parts so far mentioned constitute a sewing mechanism and may be of common construction and function.

a designates a reciprocating cloth-plate, be-

tween which and the presser-foot L the cloth to be operated upon is clamped, the presserbar being loosely hung in any appropriate manner to adapt it to travel in any direction with said cloth-plate. The cloth-plate is first given reciprocating movements in the direction of the arrow 2 (see Figs. 2 and at) to form the long stitches 7, Fig. 12, and then a reciprocating movement in the direction of the arrow 3 and a slow advancing movement in the direction of the arrow 4; to form the stitches 8 across the stitches 7 to complete the bar. The means to produce these functions will first be described.

I) designates a slide provided with gibs 0, upon which slide and between which gibs the cloth-plate a is adapted to operate in its reciprocating movements in the direction of the arrow 2, the slide Z) being constructed and arranged to move on thebed-plate so as to reciprocate the cloth-plate a in the direction of the arrow 3. (See Figs. 2, 3, 10 and 11.)

d designates an elbowlever fulcrumed at 6 upon the slide 1) and provided on what is here shown as its short arm. with a stud f, squared at its lower end, which squared portion of said stud extends through a slot or notch g, formed in the cloth-plate a.

h designates a pitman or rod connected at its forward end with the elbow-lever d at its fulcrum-point e and adjustably pivoted at its rearward end to a lever i, fulcrumed at j upon the bed of the machine, Figs. 2, 6, and 7. Said lever i is provided on its end opposite its fulcrum-point with a stud 7a, which extends down through a slot 1 in the bed of the machine and into a cam-groove m formed in the upper face of a horizontally-arranged gear n, driven by a gear 0, Fig. 3, on the main shaft 0.

19 designates a rod or pitman adj ustably connected at one end with the long arm of elbow-lever d and pivoted at its opposite end to the forward end of a lever q, fulcrumed upon a stud 7', which extends loosely through lever 7; and through a slot in the bed of a machine. Lever q is provided on the under face of its forward end with a recess or notch 8, adapted to receive a stud t, projecting up from the forward end of lever i, so that by moving lever q down upon lever 2' said two levers may be connected and operated practically as one lever, andwby raising lever q itmay be disconnected from lever 1', so that the former may be operated on stud r as a fulcrum and the latter upon stud j, moving lever q slightly at the same time. It will now be seen that if levers q and i should be connected and the machine should be operated cloth-plate a would be moved in the direction of the arrow 2, Figs. 2 and 4, to form long stitches 7 and slightly in the direction of the arrow 3, so as to lay said long stitches 7 in a diagonal direction, (see Fig. 12,) considered with respect to the cloth-plate and the needle-slot formed therein, and if lever q should be raised to the position in which it is represented in Fig. 7 it would be disconnected from levert' and the cloth-plate a would be reciprocated through the medium of rod hand its actuating mechanism only in the direction of arrow 3, forming the short stitches 8 across the long stitches 7. Now, after forming the long stitches 7 and beginning to form the short, cross, or binding stitches 8 the cloth-plate should be gradually advanced (as is done in'this my invention) from its rearward to its forward position, the cross or binding stitches 8 may be made over the long stitches 7 from end to end of the latter. The means by which these functions are accomplished by my improvements will next be described.

a designates a lever fulcrumed at o beneath the bed of the machine and provided a little rearward of its fulcrum-point with a laterallyextending dog 20, adapted to engage a screwthread 00, formed on the periphery of an enlarged hub of or disk y, attached to gear 77.. Said dog w is pivoted to lever to, and its free end is forced upward by a spring 2, secured to lever to and bearing on the'outer end of the dog. A set-screw a, tapped through the dog and bearing at its upper end against the lever it, affords a means for adjusting the dog so that its free end may be made to engage a greater or less number of the screw-threads 0c, counting from the bottom, all of which will be clearly understood by an inspection of Fig.5 of the drawings. A spring I) is attached at one end to the bed of the machine and at the other end to the arm or portion of the lever it beyond the fulcrum-point o, to which the dog w is attached, (see Fig. 3,) which spring tends to draw the dog w toward the huby of gear 71 and hold said dog in engagement. with the screw-threads 00 or draw it under the hub y, as the case may be. The

wheel g on the shaft f on the lug Z inner upper edge of lever u is beveled or provided with 7 an inclined cam-swell 0 near the point where the dog 10 is secured thereto, which beveled portion of the lever is arranged to move under the fulcrum-pin r of lever q and raise said lever, as shown in Fig. 7, or to move out or partially out from under said pin 1' and allow lever q to be brought down on lever i, as it will be by the action of spring (1, and so as to engage lug or pintwith notch or recess 8, as shown in Fig. 6. The end of lever 10 opposite that to which spring bis attached thereto is provided with a dog (2, (see Fig. 3,) adapted to be brought into or thrown out of engagement with a screwthreaded hub or sleeve g connected with a broad ratchetwheel 9', turning loosely on the inner end of the shaft f, but not allowed to moved longitudinally thereon. The shaft f is arranged in bearings connected with the machine-bed, so as to move longitudinally therein.

. h designates a pawl arranged to engage the teeth of ratchet-wheel g and to be actuated by an eccentric t" on the main shaft 0, the said pawl being held down in engagement with the teeth of said ratchet-wheel by a spring k Shaft f is provided with What I term a creeper j, which consists of an angular finger arranged to extend through a slot in, formed in the bed A, (see Figs. 4, 9, and10,) and to operate against a downwardly-extending lug Z, formed on the long arm of the elbowlever d, so that when the dog 6' is engaged with thescrewthreaded sleeve 9 of ratchetand said ratchetwheel and sleeve are rotated and the shaft is gradually moved longitudinally (as it will be under such circumstances) in the direction .of the arrow 5, Fig.

of elbow-lever d, will gradually move said lever on its fulcrum 6, so as to ad vance the cloth-plate a from its rearward to its forward position, or, in other words, in the direction of arrow 2, Figs. 2 and 4. Supposing now that the cloth or other material to be operated upon has been clamped in proper position between the presser-foot L and the cloth-plate a, and the arm or end of lever u is drawn back in the direction of the arrow 4, Fig, 3, against the tension of the spring I) and the dog 10 brought into engagement with the screw-thread won the periphery of the hub or disk y of gear n, pin a" of lever q will have ridden down on the incline c of lever u and.

brought said lever g down upon lever t' and pin tof the latter lever into engagement with o the notch or recess 5 of the former lever, permitting said levers to be actuated in unison. By the movement of lever 11. as aforesaid, dog 6 will have been disengaged from the screwthreaded sleeve 9 and elbow-lever at will have been moved through the medium of rod 19 after lug t shall have engaged the notch or recess 8, so that the lug Z shall have operated against the creeper j to move shaft, f longitudinally in a direction opposite to the 3, the creeper j, acting arrow 5, Fig. 3. W'ith this adjustment or arrangementofpartsthemachinemaybe started, when the cam-groove m, acting on the stud it, will actuate the levers 2' q, and through the medium of said levers the elbow-lever cl and the eonnect-ing-rodsp h reciprocate the cloth-plate ain the direction of the arrow 2 and slightlyin the direction of the arrow 3 to form the long diagonal stitches 7, Fig. 12. This operation will continue until dog 20 travels down and out of engagement with screw-threads 00 on hub 3 and said dog is drawn under said hub by spring 1), moving lever u on its fulcrum o, bringing dog 6 into engagement with the screw-threaded sleeve 9 and raising pin r by bringing incline c thereunder, so as to disconnect lever g from lever i, as shown in Fig. 7. The number of long diagonal stitches '7 which will be taken will depend upon the number of screw-threads 0c of hub 3 counting from the bottom, with which dog to is allowed by adjusting screw 0/ to engage. With the parts in the position last described, upon the further operation of the machine clothplate a will be actuated by lever z'and its connections and be in no wise aifected by the operation of lever (1, so that said clothplate will be reciprocated from side to side or in the direction of the arrow 3 and will be gradually advanced from its rearward position in the direction of the arrow 2, Fig. 2, by the operation of the creeper j on the lug Z of elbow-lever d, whereby the cross or binding stitches 8 will be formed across the long diagonal stitches '7, drawing in said long stitches at the ends thereof and forming a perfect bar or tack, as shown in Fig. 12. The length of the long stitches 7, and consequently of the bar, will depend upon the point of the long arm of elbow-lever d, at which the rod t is pivoted thereto, as will be readily understood by an inspection of Fig. 2. After the cross or binding stitches 8 shall have been taken along the long diagonal stitches 7 the machine is stopped automatically, and this is accomplished by the means which I will next describe.

m designates a lever fulcrumed at or beneath the bed of the machine and loosely connected at its inner end with. a longitudinally-movable rod 0 and provided at its opposite end with an arm 19, adapted to move a clutch member q, splined on craft 0 into and out of engagement with a clutch-member r, connected with pulley D, arranged to turn loosely on said shaft. Rod 0 has a spring .9 connected therewith, which tends to draw said rod in the direction of the arrow 9, Fig. 3.

t, Figs. 1 and 3, designates a lever, of bellcrank form, fulcrumed on the bed of the machine, the horizontal arm of which is constructed and arranged to engage a notch formed in rod 0. \Vhen said rod is moved in a direction opposite to arrow 9 and against the stress of spring .9, the vertical arm of said lever t projects up through a slot in the bed A and is provided on its upper end with a crosspin a, which extends in the path of movement of the outer end of lever q, (see dotted lines in Fig. 2,) when cloth-plate a is moved to its extreme forward position. Upon adjusting lever u, as shown in Fig. 3, the arm of lever m, connected with red 0, may be drawn outward in the direction of the arrow 4, moving rod 0 in a direction opposite to the arrow 9 and causing clutch member q to be engaged by the member 1", thus rotating main shaft 0. At the same time the horizontal arm of elbow-lever t will catch into locked in operative position until the creeper j moves the cloth-holder a to its extreme forward position, which operation will bring the outer end of lever q into such position that it will strike the pin 11-, rocking lever t on its fulcrum and raising the horizontal arm of said lever out of the notch in rodo and allowing spring s to move said rod and lover m, so as to disengage the clutch member g from the member 0" and stop the rotation of shaft 0. I

A chain or rod r, Fig. 3, may be attached to the end of lever u opposite that provided with the dog 6, passed over a pulley w, and attached to a treadle (not shown) on the floor, whereby the parts may be adjusted in operative position by the mere movement of the foot of the operator.

It is obvious that the form and arrange ments of parts constituting my improvements may be varied without departing from the nature or spirit of the invention.

Having thus set'forth the nature and pur poses of my improvements in barring and tacking machines, I declare that what I claim 1s- 1. In a barring and tacking machine, the combination, with a sewing mechanism, of a reciprocating slide and means for reciprocating the same, a cloth-plate carried by and adapted to be reciproeated on said slide in a line at right angles to the line of movement of the latter, means for holding the cloth on the cloth-plate, an elbow-lever fulcrumed on said slide and having one of its arms pivoted to said cloth-plate, a rod pivoted at the apex of said elbow-lever, a lever to which the other end of said rod is pivoted, and means for oscillating said lever and reciprocating the cloth-plate, as hereinbefore set forth.

2. In a barring and tacking machine, the combination, with a sewing mechanism, of a reciprocating cloth-plate, means for reciprocating the same and means for holding the cloth on the plate, a slide carrying said plate and constructed and arranged to be reciprocated at right angles to the line of reciprocation of the cloth-plate, a rod pivotally connected with said slide, a lever to which the other end of said rod is pivoted, a stud proj ecting from said lever, another lever having aslot into which said stud engages, and means foroscillating the slotted lever, as hereinbefore set forth.

the notch formed in rod 0 and hold the parts" "mentioned rod to reciprocate said slide at right angles to the line of reciprocation of said cloth-plate, as hereinbefore set forth.

4. In a barring and tacking machine, the combination, with a sewing mechanism, of the slide 0, the elbow-lever d, pivoted thereon, cloth-plate a, supported and adapted to mo ve upon said slide, one arm of said lever (Z being pivoted to said cloth-plate, rod 19, pivotally connected with the other arm of said lever, rod h, pivotally connected with said elbowlever, lever i, pivotally connected with rod h and provided with the studs 70 and t, lever g, Q provided with the stud 0', extending through lever c, and with the recess or notch s, and a lever '11, provided with the incline or cam c, as hereinbefore set forth.

5. In a barring and tacking machine, the combination of a reciprocating slide and means for reciprocating the same, a clothplate supported upon said slide and adapted to be slid thereon, means for holding the cloth on said plate, an elbow-lever pivoted on said slide having one arm pivotally connected With said cloth-plate and a stud extending from the longer arm of said lever, a longitudinally-movable shaft, and a finger connected with said shaft and adapted to bear against said stud and to move said lever,

7 whereby the cloth-plate is slid at right angles to the slide, as hereinbet'ore set forth.

In testimony whereof I have signed my name to this specification, in the presence of two subscribing witnesses, this 26th day of March, A. D. 1889.

l HENRY H. CUMMINGS.

Witnesses:

ARTHUR W. ORossLEY, A. D. HARRISON.

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