US644174A

US644174A - Sewing-machine.

Info

Publication number: US644174A
Application number: US65908897A
Authority: US
Inventors: Solon G Howe
Original assignee: JEROME W HYDE
Current assignee: JEROME W HYDE
Priority date: 1897-11-19
Filing date: 1897-11-19
Publication date: 1900-02-27
Anticipated expiration: 1917-02-27

Description

-No. 644,!74. Patented Feb. 27, I900. S. G. HOWE.

SEWING MACHINE.

(Application filed Nov. 19, 1897-) (No Model.) I0 Sheets-Sheet l.

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No. 644,174. Patented Feb. 27, i900.

s. a. HOWE. SEWING MACHINE.

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(No Model.)

WITNESSES wflww Patented Feb. 27, I900.

S. G. HOWE.

SEWING MACHINE.

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me warm PETERS 1:0. PHOTO-LITHQ. WASHINGTON. n. c.

No. 644,174. I Patented Feb. 2.7, I900.

8. G. HOWE. SEWING MACHINE.

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UTE. T F= WITNESSES w, [WVEWIOQ 1m; MORRIS PETERS m. wormilmm wasumamu. u. c,

N0. 644,l74. Patented Feb. 27, I900.

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SEWING MACHINE. (Application fil ed Nov. 19, 1597. (No Model.) l0 sheets-Sheet 5,

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(Application filed Nov. 19, 1897.)

(No Model.)

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S. G. HOWE.

SEWING MACHINE.

(Application filed Nov 19, 1897.)

Patented Feb. 27, I900.

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- Patented Feb. 27, I900. S. G. HOWE.

SEWING MACHINE. (Application filed Nov. 19, 1897) (No Model.)

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WIIWESSES W4 Tu: mama PETERS co wn No. 644,!74. Y Patented Feb. 27, I900, s. a. HOWE.

SEWING MACHINE.

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' NITED S TATES ATEN F EF SOLON e. 1IowE, oE DETROIT, MICHIGAN, ASSIGNOR OF ONE-HALF To JEROME w. HYDE, or SPRINGFIELD, MASSACHUSETTS.

SEWING-MACHINE,

SPECIFICATION forming part of Letters Patent No. 644,174, dated February 27, 1906.

Application filed November 19,1897. S ial No. 659,088. (No model-l T aZZ whom it; may concern:

Be it known that I, SOLON G. HOWE, a citizen of the United States, residing at Detroit, county of WVayne, State of Michigan, have in-' Vented certain new and useful Improvements in Sewing-lvlachinesg and I declare the following to bea full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, which form a part of this specification. I This invention relates to certain new and useful improvements in sewing-machines, the machine being more especially adapted for heavy work and for an overstitching machine.

The invention consists of the structure, combination, and arrangement of devices hereinafter described and claimed, and illustrated in the accompanying drawings, in which- Figure 1 is a vertical section of a machine on the line 1 1, Fig. 5, embodying features of the invention. Fig. 2 is a plan view of portions of the machine, the cover being removed and showing parts in horizontal section. Fig. 3 is asection on the line 3 3, Fig. 1. Fig. 4 is a detail view showing one face of the cam E Fig. 5 is a view in section on the line 5 5, Fig. 1. Fig. 6 is a vertical section on the line 6 6, Fig. 2. Fig. 7 shows detail views of the lever F with related parts in Section. Fig. 8 is a partial vertical section through the rear of the pressure-arm. Fig. 9 is a partial vertical section on the line 10 10, Fig.8. Fig. 10

is a detail View of the portion D of the needle-bar. Fig. 11 is a front view of said portion of the needle-bar. Fig. 12 is a section on the line 13 13, Fig. 10. Fig. 13 is a detail View showing one of the boxes for carrying the inner ends of the driving-shaft. Fig. 14 is a side elevation of the feeding-case. Fig. 15 is a vertical section of the same. Fig. 16 is an end view, partly in section, showing the device for registering the measurements of the stitch. Fig. 17 is a plan view of the same.

Fig. 18 is an end view of a locking device for preventing the feed-Screw from changing the feed while in operation.

Fig. 19 is a perspective view of the case of the machine, the cap or top being removed. Fig. 20 is an end View of the machine-table and the truck to carry the carpet. Fig. 21 is a sectional view of one of the clamping devices. View of a modified form of clamping device. Fig. 23 is a plan view of the table, machine, and carrying device. Fig. 2a is a sectional view showing the joint of one form of clamping lever-arm. Fig. 25 is a side elevation of a modified form of clamping lever-arm, showing a supplementary clamping-arm, partly in section. Fig. 26 is a partial plan view showin g the parts in section of a tripping-lever for tripping the pinion meshing with the rack that carries the table. Fig. 27 is a detail view of the cap A and the locking-nut thereupon. Fig. 28 shows details of the construction of the needle-bar. Fig. 29 is a detail View, in front elevation, showing the lever A and related parts. Fig. 30isadetail view ofaspringclamp to hold the edges of the work together. Fig. 31 is a detail view of a work-clamp. Fig. 32 is a sectional view showing a modification in the manner of forming the joint of one of the standards upon the traveling platform with the base or bracket. Fig. 33 is a view in perspective showing the wear-lugs e e.

This present invention is carried out as follows:

The case of the machine is preferably made in two parts. (Indicated at A and A B B denote the driving-shaft, preferably formed of two parts or divided in the center, as shown in the drawings, a crank B B being interposed intermediate the outer extremities of the shaft, between the inner ends thereof.

0 represents inner feed disks mounted upon a shaft 0, so as to rotate therewith.

C represents outer pressure feed disks loosely mounted upon a shaft 0 carried by a pressure-arm 0 Two feeding-disks are preferably located upon each of the shafts O and C to provide a pair of adjacent feeding-disksone toward the upper ends of said shafts and another pair toward the lower ends of said shafts. For certain kinds of work these feeding-disks are preferably toothed or milled on their peripheries to more firmly grasp the Fig. 22 is a plan work and hold it from slipping in the machine. I do not confine myself solely to the use of a double set of feeding-disks, however.

D D represent the needle-bar, carrying the needle (Z and engaged with the crank B B upon the driving-shaft in any suitable manner. The driving-shaft, as above observed, is parted to receive the crank at a point corresponding to the location of the needle-bar where it passes through the case of themachine,at the front and rear thereof. As shown, the needle-bar is constructed with a front portion D and a rear portion D, the rear portion being depressed or offset, as shown, adjacent to the crank, so as to permit the revolution of the crank. The front end of the portion D of the needle-bar is preferably constructed with a boss d, into which the inner end of the part D of the needle-bar is threaded, as shown at (1 or otherwise connected therewith, alink D connecting the needle-bar with the crank.

The case of the machine is formed with a suitable guide-bearing, as shown at a, for the rear end of the portion D of the needle-bar. For the inner ends of the driving-shaft B B suitable boxes are provided, said boxes being preferably constructed of lower portions a and upper portions a provided with bracket arms, as shown, said arms being united in any proper manner, as by screws a and secured to the upper and lower portions of the case A A respectively, as indicated in detail in Fig. 13. The bracket-arms of these boxes are designed to be so constructed and secured in place that they will be held rigidly and keptfrom springing,whatever may be the strain thereupon. The parts of the needle-bar are designed, moreover, to be so adjusted that the thrust of the needlebar to pass the needle through the work will be made just when the crank has passed the center, and will therefore be in. position to exert a most powerful force in causing the needle to penetrate the Work. Provision is thus made for the amount of power required in heavy work, as in work upon fur robes, heavy leather goods, carpets, heavy canvas, and the like,where a very considerable power is obviously necessary to pass the needle efficiently through the work. It should be understood, however, that the invention is not limited to the specific construction and arrangement of the cranks with the needle-bar and driving-shaft hereinbefore set forth and illustrated in the drawings, inasmuch as the needle-bar may have a crank connect-ion with the driving-shaft in anysuitable manner within the scope of this invention.

E denotes a looper-bar provided with a looper-arm E, said bar being actuated by a cam E on the driving shaft. To this end a lever E is provided, actuated by said cam, the cam being provided with a cam-groove e and the lever E being provided with a roller e, projecting into said groove. This lever e is fulcrumed at one end, as shown at e", in

any suitable manner, but preferably to a fulcrum-arm e engaged within the case of the machine. The opposite end of said lever has a jointed connectionwith a sleeve l3 upon the looper-bar, as by a link E engaged with said sleeve and with said bar. The sleeve E, with the looper-bar passed therethrough, has a vertical movement in the case, as in an elongated opening therein. By this construction and arrangement a vertical movement may be given to the looper-bar to lift and to depress the point of the looper-arm.

The looper-arm is given a rocking movement by means of a lever F, fulcru med at one end, as at f, in any suitable manner, preferably to a fulcrum-arm F, engaged within the case. Said lever F is actuated by the cam E upon the driving-shaft, said cam being constructed with a cam-groove f and the said lever with a roller f projecting into said groove, the groove f being formed on the opposite face of the cam E from the groove e, the opposite surfaces of the cam E being shown in Figs. 4 and 6. \Vith the opposite end of the lever F is engaged an elbow-link F, connected with 'a ball-joint G, carrying the looper-arm in any suitable manner, as by an intervening lever F The elbow-link F preferably has a ball-and-socket joint with the levers F and F as indicated at f and f. To this end the adjacent extremities of the levers F and F are constructed with sockets, while the extremities of the elbow-link F are constructed with balls, as shown, said balls being held in said sockets by split collars f and f, engaged thereupon and held in place upon the corresponding levers by suitable pinsf" and f or otherwise, as may be desired.

The ball-joint Gr is preferably formed by socket-plates g and 9 divided longitudinally, said plates inclosing a ball G, through which the 1ooper-bar is passed and keyed, as shown, so that the rocking of the ball in its socket will rock the looper-arm. By separating the socket-plates on a horizontal line it is possible to readily remove the upper plate or cap, permitting the lifting of the whole looper mechanism out of the top of the case and as quickly to replace it, if required.

To give a longitudinal movement to the looper-bar, a slide II is preferably made rcciprocatory in guide-recesses of the case, as at h. This slide is provided with a downwardlyprojecting arm H, actuated by a cam II on the driving-shaft, said cam being provided, preferably, with a cam-groove h and said arm with -a roller 7L2, projecting into said groove. Upon the looper-bar E is a bracket-arm E sleeved upon an oscillatory arm H Said arm H has a ball-and-socket-joint connection at its extremity with said slide, as shown more particularly in Fi g. 5, said arm being provided with a ball and said slide with a corresponding socket to receive the ball end of the arm, as shown, a nut engaging the ball end of said arm on the slide. By this construction and arrangement it is evident that the looperbar will be reciprocated in the direction of the movement of the slide, while the looperbar is permitted to rock or oscillate and also to be reciprocated vertically to effect the requisite movement of the looper-arm in forming an overstitch, which movements are well understood and need not be here explained.

In order to get a positive feed of the rolls, I prefer to use a gang-pawl, which may be toothed as closely as llllGSlXhY-fOllIth of an inch, if desired, and whereby the stitch may be lengthened in sixty-fourths of an inch to any desired length by simply turning a suitable adj usting-screw. Accordingly J denotes a gang feed-pawl meshing with a correspondingly-toothed ratchet-wheel 0 upon the shaft 0. This feed-pawl J has preferably a jointed connection with an arm J, as indicated atj. The opposite end of the arm J has a jointed connection, as shown at j, with a spring-barrel J J is an adjusting-screw having a threaded engagement in said barrel, as shown in Fig. 3. This barrel is provided with a spring 7' preferably engaged about the adjusting-screw, as shown. Said spring bears against a cap A extending about the ratchetwheel, and tends to hold the spring-barrel, with the arm J, away from the cap, while by means of the ad justing-screw J 3 said barrel, with the arm J and its feed-pawl, may be adjusted in the opposite direction. The arm J is preferably constructed with a springsocket, (indicated atfi) in which is located a spring J bearing upon its opposite end upon the spring-barrel to hold. the pawl J in contact with the ratchet-wheel. barrel I prefer to locate antifriction-rolls 7' upon shafts j", which may be covered by a cap a. To automatically actuate said feed-pawl, the cam E is provided with an antifrictionroll 6 projecting from the periphery of the cam to contact with the extremity of the spring-barrel J upon the rotation of said cam, thereby forcing forward the spring-barrel,and consequently the feed-pawl J, giving a corresponding rotation to the ratchet-wheel.

J 4 is a locking-pawl preferably gang-toothed to engage with the ratchet-wheel O and prevent its retraction, a spring j holding said pawlin contact with said ratchet-wheel. The main case of the machine is provided with an outwardly-projecting feed-case (indicated at A upon which the cap A is engaged, the feed-screw J 3 passing through the cap A The spring-barrel works in sliding ways a in the portion of the case A To lock the adjusting-screw J while the machine is in operation, I provide a lever J which may be fulcrumed, as indicated atj upon the cap a the inner end of the lever being constructed with two or more angular faces to bear against the corresponding faces on the collar J of the adjusting-screw. J is a spring to hold the lever J in normal contact with said collar.

To measure the length of the feed and to render the same visible to the operator, the

At the side of the cap a may be provided with a chamber (in dicated at a) in which I locate a graduated plate a which maybe graduated to the sixtyfourth of an inch, if desired. The springbarrel J 2 carries an index-finger (indicated at j adjacent to the graduated edge of said plate. Said chamber is closed by a glass (indicated at A) through which the operator may observe the position of the index-finger. To retract the pawls J and J in case it is desired to reverse the feeding-disks to draw back the work, I provide a slide or bolt 0 which carries the spring j, said slide passing through the portion A of the case, as indicated at a the inner end passing through a guide-bracket, (indicated at C The upper end of the slide 0 may be actuated by an eccentric-lever A, fulcrumed to the case of the machine. It will be obvious that when the lever A is actuated in a proper direction the slide 0 will be forced inward, the spring j carried thereby being carried past the fulcrum of the pawl J thereby tripping said pawl, the inner end of the slide 0 being carried against the arm J to depress said arm, and thereby retract the pawl J from the ratchet-wheel, thus releasing the feed-ratchet entirely. The cap a may be held upon the portion A of the case by means of screws a". The cap A may be held in place by means of screws a The upper portion A of the case is constructed with a recess (indicated at A in which the pressure-arm 0* is carried. Fig. 19 more particularly shows the manner of dividing the portions A A of the case on the line of the shaft of the needlebar and the driving-shat t, the case being formed with suitable openings (indicated atA and A") for said shafts, respectively. The two parts of the case may be bolted together, as by bolts, (indicated at A The lower socket-plate g is I preferably cast integral in the upperportion of the case. The antifriction-rolls 7' can be mounted upon screw-journals.

The shaft 0 may be journaled at its lower end in a bracket A Said bracket is formed with a collar a with which an adjusting-cap A has a threaded connection, said cap carrying a pin A having a hardened cone-shaped head, upon which rests the lower end of the shaft 0. The cap A is split at its threaded portion, as indicated at a Said cap is held in place bya lock-nutA Thelock-nut and the outside threaded portion of the cap A have corresponding beveled adjacent faces permitting a desired adjustment of the cap, and consequently the desired adjustment of the shaft 0, the said cap being held in adj usted position by tightening said lock-nut.

When it is desired to dispense with the lower disks 0 O suitable washers may be put upon the corresponding shafts in place thereof. The portions A A of the case are constructed with split j ournal-bearin gs, (indicated by the numerals 1 and 2,) over which is engaged a locking-sleeve 3, having a threaded engagement thereupon to hold the portions of the bearing in firm position. A hand-wheel 4 is located upon one end of the driving-shaft and the opposite end may be connected with any suitable driving device. In Fig. 2 is shown a grooved pulley 5, which may be attached to any additional hand-wheel 6. In Fig. 5 is shown a cone-pulley 7. The case of the machine is provided with a cap 8. The inner end of the pressure-arm O is formed with aspring-chamber 9, in which is located a spring 10, the tension of the spring being adjusted by a hand-screw 11. I prefer to make the arm C of malleable iron, and in order to properly anneal it it will be understood that the walls of the spring-barrel should be of nearly equal thickness, which may be done by forming the barrel in the upper portion thereof as shown, and by recessing and ribbing the lower portion, as indicated at 12. To release the pressure of the bar 0 a bellcrank 13 may be provided connected by a rod 14 with a foot-lever 15. To adjust the arm (3 or to take up any lost motion by reason of wear, I prefer to provide a wearing-plate 16 and screws 47, having an adjustable bearing thereagainst. I prefer to hold the bracketarm E upon the looper-bar by means of collars c and a, secured upon the looper-bar, as by set-screws e (Shown in Fig. 1,)

The sleeve E is preferably constructed with an eye at c to receive a link-pin 6", connect ing the link E with said sleeve. Said sleeve is also preferably constructed with guide and wearing lugs e outside the case and similar lugs a inside the case of the machine to guide the looper-bar in its vertical reciprocation. The looper-bar is sleeved through the ball G and keyed therein, as indicated at e To provide for a desired tension upon the thread in the backward action of the needlebar in order to form the required loop for the looper-arm to catch in forming the loop, I prefer to employ a pin D engaged in the needle-bar, as shown in Fig. 2, between the head of which and the adjacent surface of the needle-bar the thread 19 is fed, a spring D being recessed into the side of the needle-bar, and said spring being constructed with a depression near its rear portion as shown at d The separable bearing 17 of the needle-bar, which bearing is formed upon the case of the machine, is provided with an antifriction-roll 18, which may be located between the parts of the separable hearing. The pin is constructed with a slot, as at 58, in which the end of the spring D is loosely engaged, until as the needle-bar recedes and the roller 18 rides into said depression d the end of the spring is permitted to exert its tension upon the pin at the end of the slot to hold the thread firmly between the head of the pin and the needle-bar, thus insuring the formation of said loop to form the stitch. I11 locating the driving-shaft and needle-bar on the same plane it is possible to shorten and lighten various parts of the machine, and thereby make the parts compact and easily accessible, also to shorten the case of the machine, thus saving considerable weight and cost in the construction of the machine-case. Furthermore, by locating the ball-bearing of the looper-bar on the inside of the machine and constructing the various portions of the machine so that the looper-bar may be lifted out of the case I have simplified the construction very materially and the means of attaching and operating the machine. Thus the looper mechanism may be taken out of the case with but little disarrangement of the parts and so keep them largely intact. So, also, I have thus made it possible to put a larger proportion of the operating parts of the machine 011 the inside of the case than has been common heretofore. Obviously, the part of the case of the machine on the line of the driving-shaft and needle-bar greatly facilitates the adjustment of the various parts of the machine, inasmuch as the parts can be put together so that they may be easily shifted and adjusted, the parts being readily accessible by removing the upper portion of the case. This construction is a great aid in putting the machine together and in making any repairs as well as any adjustment that may be necessary. To firmly hold the two edges of the work together in the operation of being sewed, as when it is desired to accurately match the figures of a carpet, and therefore to hold the two edges of the work in fixed position without liability of the figures being mismatched, any suitable means may be employed, as a clamping device 27, (shown in detail in Fig. 30,) constructed of clamping-

arms

28 and 29, pivotally connected, as at 30, said arms provided with a tension-spring 31 to close thejaws 32 from the work. Where it is desired to form a folded seam also, this clamping device 27 may be employed to hold the parts together.

In Fig. 20 I show a hand-power machine with a movable platform to carry heavy work, such as carpet, sails, the. In this case an auxiliary driving-shaft B is provided upon a supporting-frame B said shaft having a bevelgear b a hand-crank 13 being also provided, having a gear b meshing with the gear Z). Upon the main driving-shaft Bis located a sprocket-wheel. (Indicated in dotted lines in Fig. 20, as at 11.) The shaft B is provided with a balance-wheel B and with a sprocketwheel, (indicated at B a sprocket-chain B connecting the sprocket-wheels b and b Heretofore the customary method of operating carpet-sewing machines has been to move the machine over or along the work, the work remaining stationary. The seam has also heretofore been formed with a throughand-through stitch leaving a seam or welt on one side of the carpet, which has prevented the carpet from being pulled out and laid flat on the floor, but always leaving a ridge along the line of the same. My invention contemplates a reversal of the order of arrangement and provides a traveling platform to carry the work, the machine being stationary, while I also provide means for securing an ovcrscam stitch, allowing the seam to pull out so that the two adjacent parts of the carpet will lie flat edge to edge, the carpet lying fiat upon the floor. Obviously these provisions constitute very desirable features and improvements upon existing methods and devices and operations in sewing carpets and analogous work. To carry the Work in cases of this description, L denotes a movable platform mounted upon trucks L, having ball-bearings in the wheels of the truck to afford the greatest amount of ease in the movement of the platform. My invention contemplates providing a platform sufficiently large to allow for folding up and carrying carpets of any reasonable dimensions in the operation of the sewing. My improved platform is provided, preferably, with upright standards L on the back and at the front with curved standards L hinged at their lower ends to corresponding brackets L upon the platform, as by means of hinged bolts L Upon each of said brackets is a ratchet L while the standards L are provided each with a pawl L Upon the upper end of eachof the standards L is a clamping-jaw Z, jointedly connected therewith, as shown at Z, to grip against the work, the corresponding standard L upon the opposite side of the work being provided with a corresponding clamping-jaw Z the work being held between the corresponding jaws l and Z The standards L are each formed with a socket Z in which may be engaged an operating-lever Z whereby when the corresponding pawl L is released the corresponding standard L may be moved away from the work, permitting the work to be lifted ofi andaway from the platform. At the ends of the platform and arranged in the line of the work are additional oscillatory standards L supported upon the platform essentially in the same manner as the standards L Said standards L are provided at their upper ends with gripping-jaws to engage the ends of the work in order that the work may be properly stretched,standards L swinging, essentially, at right angles to the standards L Said jaws may be formed with a stationary jaw Z bolted to the standard in a position to allow it to pass under the feedrolls. A corresponding clamping-jaw Z is also provided, a link Z having a connection at one end with a bracket Z attached to the standard L as shown at said link having a jointed connection with the jaw l at its opposite end, as indicated at Z. The standard L is also provided with additional clampingjaws projecting above the jaws already described to engage the work at or near the upper edges thereof and in order that the work may be properly stretched along the line for the stitching. ljhis clamping-jaw may consist of a jaw 33, formed integrally witha supporting-arm 34, having a jointed connection at its lower end, as indicated at 35, upon the corresponding standard L An additional jaw 36 is hooked into an opening, (indicated in dotted lines at 37, Fig. 21,) said jaw 36 beconnection at 35.

ing provided with a clamping-bolt 38, passed therethrough, one end of said bolt provided with a ball end 39, having a corresponding socket engagement with the jaw 33, as indicated at 40, said bolt being held in place by tirely out of the way by means of the jointed To give additional tension to this open clamping device, if desired, the arm 34 may be provided with a hand-screw 42, bearingagainst the upper end of the standard L The bases of the standards L are conuected with the platform, in consequence of which obviously the clamping-jaws already described could only engage the work of a length corresponding to the distance of said standards apart. To provide for different lengths of carpet or other work, myinvention contemplates the employment of a separable clamping device, (shown in detailinFig. 31,) in which clamping-jaws 43 and 44, actuated by-a bolt 45, a nut 46 thereupon, and a spring 48, are employed, constructed, and arranged in a similar manner to the clamping device shown in Fig. 22, except that the jaw 43 instead of being supported upon an arm 34 is in' this instance provided with an eye, as at 49, through which a suitable strap 50 maybe engaged, said strap being engageable in the upper clamping device upon one of the standards L at the opposite end, This will obviously provide for the proper stretching of the work whatever may be the length of the seam to be sewed. The platform L is supported upon the axle L of the truck in any suitable manner, as by bracket-bearings L The truck -wheels are indicated at M, said wheels traveling upon suitable tracks, (indicated at M.)

To actuate the platform and cause it to travel with proper speed as the carpet or other work is being fed through the feeding-disks, I lengthen the shaft O, upon which the inner feed-disks are located where the platform is employed in connection with the machine, said shaft having a bearing in a fixed standard O, the base of said standard preferably being socketed to receive the lower end of the shaft, as shown at c, a cone-shaped pin 0' being engaged in said standard to support the lower end of said shaft. Upon the shaft I engages a pinion (indicated at 0 provided with a hub 0 said pinion being constructed with the same diameter as the ratchet-wheel C and said pinion meshing with a rack-bar 51 upon the inner edge of the platform L. With the hub c of the pinion is engaged a yoke 0 connected with an operating-lever c. The yoke 0 may be made separable from said lever or integral therewith, as may be preferred. Any suitable means may be provided to actuate the lever O. Said lever is pref erably weighted, as shown at 0 so as to hold IIO the pinion in normal engagement with said rack. of mesh with the rack, as when it is desired to move the platform independently of the machine, it may be done, obviously, by a suitable manipulation of the lever 0 throwing downward said pinion out of mesh with said rack-bar. In Fig. 20 I show an eccentric (indicated in dotted lines at c) actuated by a crank 0 by means of which the lever 0 may be lifted at its outer end to depress the pinion upon its shaft. a separable foot-lever a may be employed, projecting underneath the lever 0 by means of which said latter lever may be lifted. It will be seen that by throwing said pinion out of gear and at the same time throwing the gangpawls en gageable with the ratchet-wheel C out of engagement therewith in the manner hereinbefore described the work and the platform may be moved in either direction, as may be desired. Such a movement would be necessary in a case of breakage of the thread, for example, as well as under other circumstances.

I prefer to unite the standards L to their bracket-bases, as more particularly shown in detail in Fig. 32, the bracket L being constructed with a hub L upon which the lower end of the corresponding standard L is sleeved. Upon the bolt L is a retaining-nut I, with an intervening washer Z The standards L are preferably engaged upon their corresponding bracket-bases L by bifurcating the lower ends of said standards and locating them astride the rib, upon the periphery of which is formed the ratchet L This is more particularly shown in Fig. 24:. In this case a tubular bearing Z is provided about the bolt L to provide a stiffened bearing and also a removable wearingbearing.

Where the traveling platform is employed, the sewing-machine may be supported upon any suitable frame B The provision of the sprocket mechanism obviously provides a positive and powerful hand driving device of sufficient power to drive the machine and the traveling platform.

To hold the needle firmly in place upon the needle-bar D, I prefer to construct the needle-bar with a hinged lip or wing d having a jointed connection with said bar, as indicated at 01 a screw-pin being employed to form the hinge. The hinged lip d is clamped upon the needle cl by means of a screw 01".

By holding the work in the manner described and sewing it by an overseaming stitch the carpet can readily be pulled out and laid flat and even on the floor without any welt or ridge at the seam.

What I claim as my invention is 1. In a sewing-machine, the combination with a driving-shaft, of a needle-bar, a link connecting the needle-bar with the drivingshaft, said needle-bar formed in two parts having a threaded engagement the one with hen it is desired to throw the pin out As shown in Fig. 2.6,.

the other, one of said parts recessed to permit the revolution of the crank, and forked to engage the adjacent end of the link, for the purpose set forth.

2. In a sewing-machine, the combination of a driving-shaft parted intermediate its ends and having its bearings in the case toward the outer ends of said shaft, a needle-bar havin g crank-arms connected therewith and with the inner ends of the shaft, and additional bearings at the inner ends of the shaft and adjacent to the crank-arms and on each side thereof supporting the crank-arms and the inner ends of the driving-shaft, substantially as set forth.

3. In a sewing-machine, the combination of a driving-shaft, and a case separable on the line of the driving-shaft, a looper-bar, a ball through which the looper-bar is sleeved, and a separable case for said ball projecting inward from the case of the machine, for the purpose set forth.

4. In a sewing-machine, the combination of a case cut away on one of its exterior lateral faces, a pressure-arm having a reciprocatory movement in said cutaway portion of the case, and means engaged upon the lateral face of the case to hold said arm in engagement in said cut-away portion, for the purpose set forth.

5. In a sewing-machine, the combination of a case cut away on one of its exterior lateral faces, a pressure'arm having a reciprocatory movement in said cut-away portion of the case, means engaged upon the lateral face of the case to hold said arm in said cut-away portion, and means to adjust said arm to take up 10st motion occasioned by wear, for the purpose set forth.

6. In a sewing-machine, the combination of a looper-bar provided with a bracket-arm, a slide, an arm sleeved into said bracket-arm and having a ball-and-socket engagement with said slide, said slide provided with a capnut engaged over said ball-and-socket joint, for the purpose set forth.

7. In a sewing-machine, the combination with a looper-arm, of a bracket-arm sleeved thereupon, collars secured to the looper-arm to hold said bracket-arm in place and permit a free movement of said bracket-arm, a slide, and an arm sleeved into said bracket-arm and having a ball--and-socket engagement with said slide, for the purpose set forth.

8. In a sewing-machine, the combination of a case, a looper-bar, means to operate the looper-bar, and a sleeve located upon said bar, said sleeve formed with guide and wearing lugs adjacent to the case, substantially as set forth.

9. In a sewing-machine, the combination of a looper-bar, a ball-and-socket joint through which said bar is sleeved and keyed, a lever to rock said ball-joint having a fulcrumed engagement at one extremity thereof, an elbow-link having a ball-and-socket joint at one end with said lever, an additional lever ICC engaged with the ball-joint of the looper-arm and with which the elbow-link has a ball-andsocket-joint connection, substantially as set forth. I

10. In a sewing-machine, the combination of a looper-bar,a ball-andsocket joint through which said bar is sleeved and keyed, a lever to rock said ball-joint having a fulcrum-ed engagement at one extremity thereof, an elbow-link having a ball-and-socket-joint connection at one end with said lever, an additional lever engaged with the ball-joint of the looper-arm and with which an elbow-link has a ball-and-socketjoint connection, said elbow-link provided with balls at its extremity engaged in corresponding sockets in the corresponding levers, split collars securing said balls in place, and means to lock said collars in position,for the purpose set forth.

11. In a sewing-machine, the combination of a pair of upper feeding-disks, a pair of lower feeding-disks, and a holding device to hold the work together located underneath the lower pair of feeding-disks, substantially as set forth. 7

12. In a sewing-machine, the combination of a feeding-disk, a shaft carrying the disk, a ratchet-wheel upon said shaft, a gang-toothed pawl to drive said ratchet-wheel, a movable barrel, means to move said barrel, an arm having a fulcrum connection with the pawl and with the barrel, an adj usting-screw engaged with said barrel and with the case of the machine to adjust said movable barrel, and a spring to hold the pawl in normal engagement with the ratchet-wheel, substantially as set forth.

13. In a sewingmachine, the combination of a feeding-disk, a shaft carrying the disk, a ratchet-wheel upon said shaft, a gang-toothed pawl to drive said ratchet-wheel, a movable barrel, means to move said barrel, an adjusting-screw engaged with said barrel and with the case of the machine to adjust said movable barrel, and means connecting the gangtoothed pawl with said movable barrel, said movable barrel having a reciprocatory movement within the case of the machine, for the purpose set forth.

14. In a sewing-machine, the combination of afeeding-disk, adriving-shaft carrying the disk, aratchet-wheel mounted on the shaft, a gang-toothed pawl to drive the ratchet-wheel, a reciprocatory barrel, means to reciprocate said barrel, antifriction rollers adjacent to said barrel, means to adjust said barrel, and means connecting the gang-toothed pawl with said barrel, for the purpose set forth.

15. In a sewing-machine, the combination of a feeding-disk, a shaft carrying the disk, a ratchet-wheel mounted on the shaft, a gangtoothed pawl to drive the disk, a gang-toothed pawl to prevent the retraction of the disk, a slide to simultaneously retract said pawls, and a lever to actuate said slide, substantially as set forth.

16. In a sewing-machine, the combination of a feeding-disk, a shaft carrying said disk, a ratchet-wheel mounted on said shaft, a gangtoothed pawl to drive said ratchet-wheel, a gang-toothed pawl to prevent the retraction of the ratchet-wheel, a yielding arm to actuate the driving-pawl, a slide provided with a spring bearing upon the retaining-pawl, and means to actuate said slide to simultaneously release said pawls from the ratchet-wheel, substantially as set forth.

17. In a sewinganachine, the combination of a feeding-disk, a shaft carrying the disk, a ratchet-wheel upon the shaft, a gang-toothed pawl to drive the ratchet-wheel, an adjustablereciprocatory barrel,anoscillatoryspringactuated arm fulcrumed at one end to said barrel and reciprocatory therewith to normally hold the pawl in engagement with the ratchet-wheel with which arm said pawl has a fulcrumed connection at the opposite end thereof, means to retract the oscillatory arm to disengage the pawl, an adjusting device to adjust said barrel, an indicating device adjacent tothe adjusting device to indicate the adjustment of the pawl, and means to automatically reciprocate said barrel, substantially as set forth. 18. In a sewing-machine, the combination of a feeding-disk, a shaft carrying the disk, a ratchet-wheel upon the shaft, a gang-toothed pawl to drive said ratchet-wheel, an adjustable reciprocatory barrel,an oscillatory springactuatcd arm to carry the pawl and normally hold the pawl in engagement with the ratchetwheel fulcrumed to said barrel and reciprocatory therewith, means to retract the oscillatory arm to disengage the pawl, an adjusting device to adjust said barrel, an index-plate, a traveling pointer carried by said adjusting device adjacent to said plate, and means to automatically reciprocate said barrel, substantially as set forth.

i9. In a sewing-machine, the combination of a feeding-disk, a shaft carrying the disk, a ratchet-wheel mounted upon the shaft, agangtoothed pawl to drive the ratchet-wheel, an oscillatory and reciprocatory arm to carry the pawl, an adjustable barrel carrying said arm, a stationary index-plate, a traveling pointer carried by said barrel adjacent to said plate, and a transparent covering inclosing said plate, for the purpose set forth. I

20. In a sewing-machine, the combination of a feeding-disk, a shaft carrying the disk, a ratchet-wheel mounted on the shaft, a gangtoothed pawl to drive said ratchet-wheel, an adjustable barrel carrying said driving-pawl, a chambered cap located overa portion of said barrel, a stationary index-plate located in the chamber of the cap, a pointer carried by said barrel adjacent to said plate, and a transpan ent covering for said chamber, for the purpose set forth.

21. In a sewing-machine, the combination of a feeding-disk, a shaft carrying the disk, a ratchet-wheel mounted on the shaft, a gangtoothed pawl to drive the ratchet-wheel, a reciprocatory barrel carrying the pawl, a driving-shaft, a cam upon the driving-shaft provided with a roller on its periphery to contact with said barrel upon the revolution of the cam to actuate the ratchet-wheel, substantially as set forth.

22. In a sewing-machine, the combination of a feeding-disk, a ratchet-wheel to actuate the disk, a pawl to engage the disk, an adjustable device carrying said pawl, an adj usting-screw to adjust said device, and a springactuated lever to lock said adj Listing-screw, substantially as set forth.

23. In asewing-machine, the combination of a feeding-disk, a shaft carrying the disk, a bearing carrying the lower end of the shaft, a cap interiorly and exteriorly threaded at one extremity thereof and having a threaded engagement with said bearing, and a lock-nut, said threaded portion of the cap being split, and said lock-nut and the adjacent portion of the cap having a beveled engagement the one with the other, substantially as set forth.

24. In a sewing-machine, the combination with a needle-bar, of a spring extending longitudinally of the bar provided with a depression toward its rear end, a sliding transverse pin located in said bar and loosely engaging said spring, the head of the pin in contact with the needle-bar gripping the thread therebetween when the tension of the spring is exerted on the pin, and a roller adjacent to said spring, said spring exerting its tension upon said pin upon the retracted movement of said needle-bar, substantially as set forth.

25. In a sewing-machine, the combination with a needle-bar, of a spring extending longitudinally of the bar having a recessed engagement in the needle-bar and formed with a depression toward its rear end, a transverse pin extending through said bar to form a thread tension device, and a roller located adjacent to the outer face of the spring, the spring exerting its tension upon said pin upon the retraction of the needle-bar permitting the roller to enter said depression in the spring, substantially as set forth.

26. In a sewing-machine, the combination of rotatable feeding-disks, a ratchet-wheel to drive said disks, a truck, a traveling platform upon said truck provided with a rack, and a pinion upon the shaft of the feeding-disks meshing with said rack, said pinion and said feeding-disks being of the same diameters, for the purpose set forth.

27. In a sewing-machine, the combination of feeding-disks, a traveling platform, means to synchronously drive said machine and actuate said platform and said disks, said platform provided with a rack and the shaft of the feeding-disks with a movable pinion to mesh With the rack, and means to throw the pinion out of mesh with the rack, for the purpose set forth.

28. The combination of a sewing-machine provided with feeding mechanism, a traveling platform provided with upwardly-projecting standards at opposite ends and at opposite sides having clamping-jaws at their upper ends to engage the Work, and means to synchronously drive the feeding mechanism and the platform, for the purpose set forth.

29. The combination with a sewing-machine provided with feeding-disks, of a traveling platform, means to actuate the feeding-disks and the platform, and clamping devices supported upon the platform and to clamp and stretch the work, said clamping devices arranged to pass under and clear of said feeding-disks, substantially as set forth.

30. The combination with a sewing-machine provided with feeding mechanism, of a traveling platform, means to drive the platform, said machine and platform provided with means to laterally clamp portions of the work together, and said platform provided with additional means to clam p and stretch the work longitudinally thereof, for the purpose set forth.

31. The combination with a sewing-machine provided with feeding mechanism, of a traveling platform, means to drive the platform and a device carried by the platform provided with clamping mechanisms at different elevations to clamp and stretch the work, for the purpose set forth.

32. The combination with a sewing-machine provided with feeding mechanism, of a traveling platform, means to drive the platform and standards carried by the platform having clamping devices, said standards provided with additional clamping devicesto clamp and stretch the work, for the purpose set forth.

33. The combination with a sewing-machine provided with feeding mechanism, of a traveling platform, means to drive the platform and standards carried by the platform, said standards provided with rigid clamping devices to engage the work, and with additional clamping devices having a jointed engagement with the standard to engage the work, for the purpose set forth.

34C. The combination of a sewing-machine provided with feeding mechanism, a traveling platform, means to drive the platform standards carried by the platform, clamping devices carried by said standards and arranged to pass under and clear from the feeding mechanism, and additional clamping devices j ointedly supported upon said standards to engage the work, and whereby the additional clamping devices may be swung out of the way of the feeding mechanism, for the purpose set forth.

35. The combination with a sewing-machine provided with feeding mechanism, of a traveling platform, means to drive the platform, clamping devices carried by the platform to engage and stretch the work longitudinally thereof, and additional clamping devices to engage the work, for the purpose set forth.

36. The combination with a sewing-machine provided with feeding mechanism, of a traveling platform, means to drive the platform,

and u pwardly-extendin g standards carried by the platform at opposite sides and at opposite ends thereof provided with clamping devices to clamp the work, the standards at the outer side of the platform having a jointed engagement at their lower ends upon the platform, for the purpose set forth.

37. The combination with a sewing-machine provided with feeding mechanism, of a traveling platform, means to drive the platform, rigid standards supported upon the inner side of the platform toward its edge adjacent to the machine and at opposite ends thereof, and curved standards supported toward the outer edge of the platform having a jointed engagement at their lower ends upon the outer side of the platform, said standards separated at their lower ends and provided with means to engage and support the work, substantially as and for the purpose set forth.

38. The combination with a sewing-machine provided with feeding mechanism, of a-traveling platform means to drive the platform, rigid standards supported upon said platform toward its inner edge,swinging standards supported toward the outer edge of the platform, and additional swinging standards supported toward each end of the inner edge of said platform, the swinging standards of the outer edge of the platform and the swinging standards of the inner edge of the platform made oscillatory at essentially right angles the one to theother, forthe purpose set forth.

39. The combination with a sewing-machine provided with feeding mechanism, of a traveling platform, and means to drive the platform, standards to clamp the work supported upon the platform having a jointed connection upon the platform, said platform and standards provided with pawl-and-ratchet mechanism, for the purpose set forth.

40. The combination with a sewing-machine provided with feeding mechanism, of a traveling platform to hold and carry the work, means to drive the platform, rigid standards at the inner edge of 'the platform and at opposite ends thereof, outer standards j ointedly supported upon the outer edge of the platform, and lever mechanism to actuate said outer standards, said standards separated at their lower ends, for the purpose set forth.

41. The combination with a sewingmachine provided with feeding mechanism, of a traveling platform to hold and carry the work, means to drive the platform, an outer standard provided with a clamping device to clamp the work j ointedl y supported toward the outer edge of said platform, and an inner rigid standard upon said platform cooperating with the outer standard, said platform provided with a supporting base or bracket upon which said standard is jointedly engaged, said base or bracket provided with a hub upon which the lower extremity of the standard is sleeved, for the purpose set forth.

42. The combination with a sewing-machine provided with feeding mechanism,of a traveling platform to hold and carry the work,means to drive the platform, outer clamping-standards supported upon the platform toward the outer edge and at the extremities thereof, and inner rigid standards upon said platform cooperating with the outer standards, said platform provided with a supporting base or bracket with which the standards are jointedly engaged, said standards each bifurcated toward its lower end and engaged astride a portion of said base, a hinge-pin to engage the bifurcated portion of the standard with said portion of the base, and a tubular wearingbearing about said hinge-pin, for the purpose set forth.

43. The combination with aseWing-machine provided with inner and outer feeding-disks, of a shaft carrying the inner disks, a traveling platform to support and carry the work, a bearing adjacent to the platfo'rmcarrying the lower end of said shaft, and means connected with the shaft to actuate the platform, substantially as set forth.

44. The combination with a sewing-machine, of a traveling platform to hold the work, means to drive said platform, standards carried at the inner side of said platform, swinging standards also carried at the inner side of said platform andtoward the extremities thereof provided with clamping mechanism, and outer standards cooperating with the firstnamed standards to clamp the work, substantially as set forth.

In testimony whereof I sign this specification int-he presence of two witnesses.

SOLON G. HOWE.

Witnesses:

N. S; WRIGHT, MARY HICKEY.