US1043161A - Overseaming-machine. - Google Patents

Description

S. I I. N. SOLY.

I OVERSEAMING MACHINE. APPLICATION FILED PEB. z3, 1904. RBNEWED SEPT. 18,1911.

` 1,043,161. Patented'N0v.5,1912.

3 SHEETS-SHEET 1.

Im I v WitnessesR; 53

S. L I. N. SOLY.

OVERSBAMING MACHINE. APPLIOATION FILED FBB.23, 1904. RENEWBD SEPT. 18,1911.

LOB.. Patented Now/15, 1912.

SHEETS-SHEET -2.

Witnesses:

Attorneys S. L I. N. SOLY.

OVERSBAMING MACHINE. v APPLICATION FILED 11:12.23, 1904. 111111111111111 SEPT. 1a, 1911.

LOQSJL Patented Nov.5,1912.

3 SHEETS-SHEET 3.

. WSA

3665;); $02 n Vlnventorg jveejf/galy,

Attorneys UNITED sTATEs PATENT OFFICE,

sAJaINsOLY AND NAPOLEON soLY, oF MONTREAL, QUEBEC, OANADA,

i 'AssIGNoBs To SAID IL ENEE NAPOLEON SOLY.

OVEBSEAMING-MACHINE.

Specication of Letters Patent.

Patented Nev. 5, 1912.

Application led February 23, 1204, Serial No. 194,677. Renewed September 18, 1911. Serial No. 849,820.

To allnwhom it may concern:

Be it lrnown that we, SABIN .SOLY and IiinNnn NAPOLEON SOLY, both of the city of Montreal, Province of Quebec, Canada, have invented certain new and -useful Improvements in Overseaming-Machinesg and we do hereby declare that the following is a full, clear, and exact description of the same.

Our invention relates to sewin machines, and especially to the class used or the purpose o sewing fur.

The object of the invention is to Jrovide simple and .durable mechanism for orming a 'seam with a single thread, and mechanism consisting of a series of initial operative members the constituent members whereof are efectuallyA prevented from correlative displacement. Y

A further object of the invention is to'` enable parts for operatin the looper to act thereon as near as possi le in a direct' line with the axis thereofl thus utilizing 'the' maximumpower of the Operating part in the direct operation of the looper with mnimum .loss in side load.

- The invention consists ofa pair of single leader cams and an eccentricall madefrom asingle piece ofV metal and in a homogenous mass,each member of this group merging 1n that next te it.- t y 'A further feature. of the inventionb consists of an oscillating crank effecting an op- .erative connection between' the connecting rod leading from the eccentric for reciprocating the looper, and the looper bearing, a further feature consisting of a universal ball joint forming a part of the Operative connection between the pair of coacting single leader cams for oscillating the looper, and

the loo er bar.

Anot er and an important featureof the invention consists in a particular construction and arrangement ofparts vwhich secures a forward movement of the cams and consequently the action thereof upon their followers, vat a point between the centers of rotation `of thecams and the fulcrums of the followers.

` Figurel is a longitudinal vertical section of a machine constructed accordin to my invention. Fig. ,2 is a plan, certain parts being broken away, as will appear, the cover of the machine. being represented as removed. Fig. Sis a vertical section supposed to have been taken substantially on the line 3-3 of Fig. 2,- certain sented as broken away. Fig. 4 is a section supposed to have been taken substantially on the line 4 4 of Fig. 2. Fig. 5 isa vertical section supposed to-have been taken substantially on 'the line 5 5 of Fig. 2. Fig. 6

partsf being repreis a side ,elevation of a fork, which coperates with a cam in connection with the looper movement'. Fig. 7 is a rear elevation of the fork shown in Fig. 6. Fi 8 is a. horizontal section taken substantial y on th'e h ne 8-8 of Fig. 1. Fig. 9 is a. vertical section supposed to have been taken substantially on the line 9-9 of Fig. 8, this vie'w being upon en enlarged scale, as will appear. F g. 10 1s a perspective representing a dog, which is used in connection with the lfeed mechanism this view is upon an enlarged scale. Figs. 11,'12, 13, 14 and 15 represeiitthe looper and needlein progressive stages, coperating to sew a seam.

Throughout the drawing and speciiication, the same'numeralsxof reference denote like'partS. Y Referring more particularly to the parts,

1 represents the casing of a machine, which comprises la substantially rectangular or box-like base 2 adapted t0 beset upon a table or similar support, as will be readily understood; this base is 'provided'forwardly with a foot' '3, under which is formed a pocket 4 containing certain feed mechanism, which will be described more fully hereinafter. The casing 1 comprises also an iipper section or body 5, which is attached rigidly to the upper face of the base 2, as indicated at 6, and this body 5 is surmounted by a 'suitable cover 7 carrying certain parts,

indicated, and this needle-bar is adapted to be reci rocated throughv the medium of a fork 13 'W ich is rigidly attached thereto, as shown, and which receives the e entric, as

l, izontal plane, and having toothed eries 18 intermeshing at 'a point 19 just eshown. This needle-bar is rovided forwardly with a head 14, whic is provided with means near its lower portion for attaching a needle 15, the said needle being disposed. longitudinally with respect to the neath the pat-h of the needle-point. The feed-wheel 17 is rigidly attached the upper extremity of a spindle 20, which sp1ndle is rotatably mounted near its upper ex-Y.

tremity in a bracket-arm 21, which extends from the base 2, as shown. As the needle is reciprocated by the needle-bar 11, the spindle 20 is intermittently advanced in such a manner as to feed the seam being sewed at the point 19, the same passino' between the intermeshing peripheries ofa the feed-wheels, it being understood that the feed-wheel 16 is maintained in contact with the feed-wheel 17 b mechanism which will be described lmore ully hereinafter.

For the purpose of actuating the feeds indle 20, the aforesaid shaft 8 is provided with the aforesaid feed-cam 10, which cam has preferably substantially the outline shown in Fig. 1, the same coperating with a feed-fork 22. This feed-fork is supported pivotally upon a link 23, being attached at the upper extremity of said link, the lower extremity of -said link being pivotally attached at 24 to an arm 25 of an adjusting bell-crank lever 26. This adjusting lever is pivotally attached at 27 to the side wall of the base 2, as shown. The said bell-crank lever 26 is further provided with a wing 28 carrying a threaded'stud 29, which stud projects through a curved slot 30 in the wall of the base, and carries a thumb-nut 31, as shown, the said thumb-nut affording means for locking the adjusting lever 26 in any position desired. Evidently, by fastening the adjusting lever in different positions, the fulcrum of the fork will be more or less elevated, in this manner effecting the throw-or amplitude of movement of the lower extremity 32 of the fork. This lower extremity 32 is pivotally attached to an` arm of the bell-crank lever 33, the same. being integral with an arbor 34, the extremities of which are pivotally mounted upon geons 35, as indicated most clearly in ig. 3. To the other arm of the bell-crank le ver f33, a feed-rod 36 is pivotally attached,

`which feed-rod passes forwardly into the at its ex-` pocket 4, and attaches pivotally tremity to a feed-plate 37. This feedlate 37 is loosely mounted upon the hub o the feed-disk 38, the same being mounted substantially centrally in the aforesaid pocket 4 and having a .peripheral flange 39 projecting upwardly, as shown. Upon the flange 39 dogs 40 are received, the same consisting of short blocks having tapered inner extremities 4l and notches 42, which receive the said iiange or rim, as indicated most clearly in Figs. 1 and 9. -As shown, the dogs 40 dpr'oject substantially radially inwardly an their inner extremities are engaged b shoulders 43, which shoulders are forme at the hub of the feed-platel 37; as indicated, there are preferably two o f these dogs 40 placed oppositely, as shown. It being understood that the notches 42 it snugly upon the rim 39, it will be evident that if a rotation of the plate 37 occurred in the direction of the arrow indicated in the full lines in Fig. 8, the shoulders 43 would tend to rotate the said dogs 40 upon their` notches, in this manner causing them to bind upon the rim so that the movement ofl the feed-plate would 4loe imparted to the feed-disk. When the return movement of the feed-plate 37 takes place in the direct-ion of the arrow indicated in the dotted lines adjacent thereto, the do s 40 are moved backwardly upon the rlm 39 by small lsprings 44, the inner portions of which consist of coils 45 attached to the under face of the feed-plate 37, as shown. From the coils 45, the bodies of these springs 44 ex'- tend in the direction of the notches 42 of the dogs 40, and near their extremities are formed with lateral extensions 46, which press against the vertical faces of the dogs lnear the notches, as shown; and beyond the extensions 46, the springs terminate in extensions 47, which lie upon the upper faces of the do and slightly constrain the same downwar ly. From this arrangement of the springs, it is evident that the force which returns the dogs 40 after they -have had an advance movement presses upon the dogs very near the notches so that this force has little or no tendency to produce a rotation of the dogs; hence, there can be no binding action whatever in returning them, and cons uently, the wear upon the faces of the notc es is inappreciable. Such an arrangement as this is considered highly advanta eous, for the reason that where the dogs avebecome sllghtly worn their efficiency is much diminished.

In order to prevent a Aretrogressive movement of the feed-disk 38, a detent dog 48 is employed, the same consisting of an elongated block having a notch 49 in the under edge thereof, which notch is adapted vto be applied to the rim 39 like the notches 42 of the dogs 40. This detent dog is very clearly shown in Fig. 10, and its manner of application to the feed-disk is clea'rly shown in Fig. 8; it,has, a rounded nose 50 at its outer extremity, which abuts` against a part of the side wall of the pocket 4, as indicated; near the notch 49, the extremity of a spring 50l presses 'the dog in a rearwardly direction with respect to the direction of rotation, the said spring comprising a coil 51 disposed `about a stud within the pocket 4, as shown. The feed-disk 38 is rigidly attached to theI spindle by means of 'a key-plate 52, the same lhaving an integral key 53 for thls purpose, and lattaching to the extremity of the spindle by means of. a screw 54. It'l should be stated at this point' that the operation of the feed-disk 38 with respect. to the thepocket 4 is providedl with a downwardlyv projecting li 55, which constitutes an eiii- 'cient shield or the purpose mentioned. 1

The feed-wheel 16 is rotatably. carried upon a vertical extension 57 formed atj the extremity of a presser-bar 58, which presserbar has a downwardly disposed extension 59 passing under the said feed-disk, as shown.

The body of this bar 58 is dis l osed substantially parallel with -the nee le-bar 11, theV same having a flattened portion 59 passing through an opening or notch 60 formed in the forward wall of the body 5. The said presser-bar is held in this notch by means pf a plate 61, disposed as shown mostclearly 1n Figs. 2 and 5. Except for the -portlon 59 referred to, the bar 58 1s preferably of round form, as shown. Its inner portion, which lies within the casing, is surrounded by a helical spring 62, which thrusts against a transverse pin 63, so as to constrain the feedwheel 16 against the feed-wheel 17, as will be readily understood; for the purpose of enablingv the feed-wheel 16 to be moved away from the feed-wheel 17 to facilitate the insertion of the seam to be Vsewed, the inner .extremity of the feed-bar 58 is pivotally attached to anarm 64, which arm is rigidly carried by an arbor 65, the said arbor havn. ing'another V'arm 66, which projects rearwardly through an opening in the casing and is provided at 67 withhfacilities for attaching al treadle link or similar' operating means. From this arrangement, it should be understood that by forcing the arm 66 upwardly, the arm 64 would be forced for.- wardly, so as to compress the sprmg 62 and displace the wheel 16'in a forward direction.

To the extremity of the aforesaid extension 57, just above the face'of the feed-wheel 16 there is rigidly attached a needle-.plate 68 having a groove 69 in the upper face thereof, constitutin a guide for the needle 15, as will be readily understood, and just above the needle-plate 68 there is attached a looper-plate 70 having an edge 71 disposed toward the point 19, which edge facilitates the formation of 'the loop, in a manner which will be described more fully hereinafter. f

Directly above the needle-bar 11, a looperbar 72 is mounted, the same comprising a head 73 rigidly attached toa stem 74, whichstem 1s longitudinally slidable in a rocker guide 75, the said guide being-supported upon the sidewalls of the body 5 through the medium of gudgeons 76. VBehind the head 73, the said stem carries in rotary relation therewith a sleeve 77 comprising a capl 78, as shown, vwhich cap coperates with the".

said sleeve to form a bearing for a crankpin 79, the said pin being made integral w1thl the arms of a crank 80, as shown; as

indicated most clearly in Fig. 5, this crank is supported lat the left upon a gudgeon 81, and at the right upon a gudgeon 82, that extremity which coperates lwith the gud- Upon this shank 83, an arm 84 is attached rigidly, aset-screw 85, and a through-pin 86 being used in this connection. This arm 84 is `for the purpose of enabling the crank 80 to be rocked to and fro; for this reason, the arm 84 is connected pivotally with an eccentric-rod 87, the lower extremity whereof attaches-to aneccentric 88, which includes an eccentric sheave, the same being rigidly carried` by the aforesaid shaft 8. From this arrangement, when the shaft 8 rotates, the eccentric-rod 87 operates to rock the crank 80 to and fro, which has the effect of giving the looper-bar a reciprocating movement; when this movement is taking place, it will, of course, be understood that the forward portion of the looper-bar rises and falls to a small extent, this movement being permitted by reason ofthe pivotal bearing of the guide 75.

lIn addition to the .longitudinal recipro-I' geen 82 comprising an elongated shank 83.

hereinafter. To this end, the stein 74 carriesrigidly a vrocking-sleeve 89, the same having a transversely disposed head 90 in which is rotatably mounted a pin 91, and thls pin has 4a bifurcated extremity v92, inl

which is pivotally attached the upper extremity of a rod 93; this rod is actuated by a fork 94 having an integral pivotally mounted arbor 95; the said fork having an extension 96 acilitating the attachment of the said arm 9 'ndicated The fork 94 is peculiarly constructed, inasmuch as the tines 97 and 98 thereof are oit-set laterally with respect to each other, and these tines coperate respectively with cams 99 and 100 cast in onepiece and secured to shaft 8 by means of a hub 101. In this connection, it

should be understood that the camA 99 operates to elevate the fork, and the cam 100 operates to move the same downwardly, and

the saidcams are so designed with relation to each other that they are alwaysv in contact with their respective tines, from which arrangement there is never any slack or lost motion at this oint.A Suchan arrangement .A

as this is consldered highly advantageous, for the reason that it does away with the necessity for springs, which are sometimes employed in connection with cams to maintain the actuated member in contact with.

i the looper-bar will be reciprocatedthereabove; however, the reciprocation of the looper-bar will be a compound one involving a reciprocation upon its own axis.,

In the forward extremity of the head 73 ofl the louper-bar, a ylooper-finger 102 is attached, the same being preferablyofsubstantially the form shown, curving downwardly -so that its extremity lies normally.

adjacent to the path of the needle 15, as indicated most clearly in Fig. 1. Thislinger is provided at its .extremity with a point' 103, which projects laterally, as shown, and opposite to this point there is a heel or nib 104. In Fig. 11, this finger 102 is represented 'as having caught a loop 105 formed-v near the needle-point holdingthe same'preparatory to having the needlepass therethrough, the said loop being caught over the point 103, and passing under the heel or nib 104. The needle passes close to the nib 104, as indicated in Fig. 11. In Fig. 12, the stitch is represented in a more advanced stage, the looper having passed away from the needle and upwardly, so as to disengage it from the loop. In Fig. 13 the needle is represented just in the act of forming the loop, which is made'at the looping-edge 71; after catching the loop over the loopingpoint- 103, the looper-bar moves rearwardly at the same time that theinger moves upwardly, so that as the needle is withdrawn from the seam, the finger draws the loop (which it catches beyond the seam)- toward the front of the seam, and it is thenimmediately moved into a depressed position,

-such as shown in Fig 11 toallow the needle In connectionto pass through the loop. with these Figs. 11 to 15, 106 represents the seam, 107 represents the ,thread which is forming the seam. It should be understood that the arm 84 will be set at a very accurately adjusted angle, in order to facilitate 'the nice ccperation of the looper-inger 55 with the needle. In practice the correct osition and adjustment would be obtained y means of the said screw 85, and after the proper osition has beenobtained, the pin `86 woul be inserted, permanently the parts in their best relation. Y

Uponthe cover 7, a spool 108 is mounted, and the thread passing therefrom passes around a guide-stud 109, and then around a portion of the periphery of a 'tension-pulley 110, thence passingthrough a guide-eye 111, and around a needle-bar guide 112 and thence tothe end of the needle, which is located, as shown, near the point of the same. AThe machine may be continuously driven by means -of a belt-pulley 113, and the shaft 8 may carry, at another point, a balance-wheel 114 adapted to make the rotation of the machine uniform. Y

In\operation, yit should be understood that the pieces to 'be united wouldfbe superposed and fed ho-rizontally between the feed-wheels -16 andI 17, so that the alining edges would project slightly above the edges of the feedwheels, as will be readily understood. A gulde 16, which consists of a curved finger terminating at the point 19 isV arranged for the purpose of assisting theguiding of the material. I l

The main advantages of an overseaming machine constructed according to the foregoing are as follows :-Owing to the'looper from the crank pinof its operating crank bar being located-beneath and suspended shaft, such looper-bar is brought more closely to the level of the: needle, thus e11- abling a shorter'looper finger to be used with lessf vertical motion.to perform its function, and consequently less s ring of the looper-bar and finger and less ost motion.

The effect of this is that the looper finger can. lbe adjusted to' work closer to the needle and finer and more. uniform work is produced.

Owing. to the particular relativenrrange- .ment of the `cams and their coperative parts, our improved machine in runnlng causes the cams, when imparting stitch forming motions to the stitch forming instrumentalities, to act upon the portions of the forks between 'the centers of rotation of the cams and the fulcrumpoints ofthe forks, with the result that the power of the 4cams is applied to the -instrumentalities more directly than heretofore while there is less spring (and, consequently, lost motion) between the cams and forks. A fur- .ther advantage is that the group of the loo er operating parts (the two single lea er cams and eccentric) are made positively and invariably coperative. Heretofore these parts (or such of themas have been utilized) have-been secured independently of one another to their carrying shaft. 1

Usually the eccentric, one single-leader cam, and a spring coacting with the cam have performed, imperfectly, the functions ,of our group of operativeparts, and the eccentric and cam have frequently after having been set (in the assembling of the machine), shifted their relative angular 4position, which, of course', resulted in the reakage of either the needle or the4 looper finger.f

We obviate any chance of this breakage by casting all the looper actuating parts (the two single-leader cams and the eccentric) in one piece.

Our particular arrangement'of the cams and their followers which causes the cams to actup'on the portions of the followers near-. est to the parts to which the followers are operatively connected, is as followsrf-The rotation of the cam shaft 8 is forward. That is to say, the top of the shaft travels toward the front of the machine. The resultant operative movement of the eccentric 9 and cam 10 `(Fig. 1) land eccentric' 88, and cams 99 and 100 (Fi 4) is such that each of the eccentrics andg cams exert their power, when causing the instrumentalities to perform their functions, upon the portions of their particular followers nearest to the instrumentalities they operate. The particular relative angular positions of these eccentrics and cams vare as shown in Figs. 1 and 4 both of which depict the cam shaft 8 in the same position in relation to the operation of the machine. By referring to Fig. l it will be observed that the eccentric 9, in the performance of its function of inserting the needle into the work, acts u on,

the portion of the forward tine of the ork 13, nearest to the crotch of such fork, and it bears upon the outer end of the rear tine only to withdraw the needle from the work. The same action is effected by feed cam 10 upon fork 22, by eccentric 88 upon rod 87,

and by cams 99 and 100 upon the'tines 97 and 98 of fork 94 coacting with the eccentric 88 in the operation of the looper. We would particularly point out here that the relative angular positions of the cams 99- and 100 and the 1 eccentric 88 constitute an important feature of this invention. By means of this particular arrangement each member of the group exerts its power stroke upon its follower in a way toobviate any chance of the latter springing (as would occur if the power stroke were exerted upon the ends of the tines) and consequently theV parts interfering and being broken as heretofore pointed out.

In all sewing machines the needle bar, or carrier, is^in great need of true and comparatively powerful actuation owing to the fragile nature of the needle and its work in perforatingvthe stock being stitched. Our

particular arrangement ofthe eccentric 9 I and-the fact of its bearing as close as possible to the true axial plane of the needle bar insures the required true action and at the same time (as is the case with all the cams and the other eccentric of our machine) applies the energy of the eccentric with the least loss, to the needle bar.

' While I-have shown in the accompanying drawings the preferred form of my invention, it will be understood that I do not limit myself to the precise form shown, for many ofthe details may be changed inform or position without affecting the operativeness or utility of my invention, and I therefore reservethe right to make all such modifications as ,are included within the scope of the following claims, Vor of mechanical equivalents tothe structures set forth.

Having described my invention what lI 'claim and desire to secure by Letters-Patent, isz;

l. In a sewing machlne the combination with a straight needle and a looper coacting therewith, of a crank shaft with its -crank pin disposed above the axis of the crank shaft, means operatively connected directly to the. crank-shaft for oscillating the same and through it `suoli looper longitudinally to the needle, a looper ybar located with its axis at/right angles to and intersecting the axis of the crank shaft when the crank is in its uppermost position, ,a sleeve mounted upon the bar, a cap secured uponV the sleeve and together therewith inclosing the crank pin, and means 'whereby the looper is connected to thelooper bar. y

2.. In an overseaming machine, looper mechanismcomprising a pair of upwardly vprojecting arms 80 connected rigidly together near their upper ends by a crank pin 79, one arm having a laterally projecting ,elongated shank near its lower end, and the end of theshank and the other arm having a pair of sockets in axial alinement, a pair of gudgeons carried by stationary parts of the machine and engaging the said sockets, a looper bar, a member located between the lower ends-of the said arms 80 and hung from the said crank pin the said member being adapted to support the bar, means for oscillating the said shank, and a looper finger carried by one end of the said bar.

In witness whereof we have hereunto set our hands in the presence of ytwo witnesses.

SABIN SOLY.

IRENEE NAPOLEON SOLY. Witnesses:

J. A. MARION, IED. PAGE.

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