US807346A - Fur-sewing machine. - Google Patents

Description

No. 307,346. PATLNTLD DLC. 12, 1905.

- G. L. BALLARD.

PUR SEWING MACHINE.

APPLICATION FILED MAY 12. 1904.

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No. 807,346. v PATETBD DEG. 12, 1905. G. L. BALLARD.

PUR SEWING MACHINE.

'APPLIoATIoN FILED 11u12. 1904.

4 SHEETS-SHEET 2.

No. 807,346. PATENTED DBG. 1,2, 1905. G. L. BALLARD.

FUR SEWING MACHINE.

APPLIoATIoN 11.21) M4112. 1904.

4 SHEETS-SHEET 3.

No. 807,346. PATENTED DEC.. 12, 1905. G. L. BALLARD.

PUB. SEWING MACHINE.

APPLICATION FILED MAY 12. 1904.

. 4 SHEETS-SHEET 4.

UNITED STATES PATENT oFFIoE.

FUR-SEWING MACHINE.

Speccation of Letters Patent.

Patented Dec. 12, 1905.

Application filed May 12, 1904. Serial No. 207,671.

To wZZ whom t may concern: l

vBe it known that I, GEORGE LAwsoN BAL- LARD, of the city of Toronto, in the county of York,in the Province of Ontario,Oanada,have invented certain new and usefulImprovements in Fur-Sewing Machines, of which the following is a specification.

My invention relates to improvements in fur-sewing machines; and the primary object sizes of needles and loopers according to the Work it is designed to sew, to devise animproved means for driving the feed-wheels,

land, in fact, to dispense with all springs in the drive of the machine, and thereby produce a positive drive not liable to get out of order. To attain these objects I have constructed and arranged my machine in detail, as hereinafter more particularly explained.

Figure l is a perspective view of my improved machine, portion of the casing being broken away to exhibit the construction and arrangement of different portions of the operating mechanisms.. Fig. 2 is a perspective View of the machine from the opposite side to that shown in Fig. l, the casing being also likewise broken away to exhibit the working parts. the casing, showing the construction and arrangement of the cams'on the main drivingshaft. Fig. 4 is a vertical section at right angles to the -section taken in Fig. 3. Fig. 5 is y a detail showing the looper and arm, together with the means for holding the looper in the arm. Fig. 6 is a detail of the thread-tensiondevice. Fig. 7 is a sectional detail through the needle-holder. Fig. 8 is a detail of the crank on the main shaft from which the needle-bar derives its reciprocating movement. Fig. 9 is a plan View of the invention with the y cover removed, showing the position of the looper relative to the needle-bar.

In the drawings like letters and numeralsl Fig. 3 is a vertical section through.

of reference indicate corresponding parts in each figure.

A is the main casing of the machine, which is substantially cylindrical in form and provided with a forwardly-extending hollow off set A in the base.

B is the maindriving-shaft, which is divided in the center, as indicated in Fig. 8, and is journaled in suitable bearings AX, forming part of the casing A, and is provided with suitable driving pulleys B. A crank is formed on the shaft B between the collars C and C (see Fig. 8) by means of the pin c, held in the collars by the set-screws c and c2. A block c3 is loosely held on the pin between the collars C and O.

D is the inner feeding-wheel, Which has a corrugated rim d, as indicated. The feed- Wheel D is located in front of the casing and is secured at the upper end of the arbor D', which extends through the front bearing AX, forming part of the casing, and the front lower bearing A3, forming part of the hollow offset A of thecasing. n

d* is a collar secured on the arbor D', and CZ is a threaded sleeve through which the arbor D extends and which passes through a correspondingly-threaded orifice in the bearing AX. provided With a nut @Z2 of any suitable form.

Z3 is a locknut fitting on the threaded sleeve OZ and designed to lock the sleeve in any position to which it may be adjusted by means of the nut-shaped end d2.

It Will now be readily seen that the feeding- Wheel D may be read-ily vertically adjusted as the rim becomes Worn.

E is the opposing feeding-wheel, which is secured in the end of the short arbor E and clamped by means of the screw c, extending through the lugs e in the end of the arm E2. The feeding-wheel. E is provided with a corrugated raised rim corresponding to the rim OZ in the feeding-wheel D.

F is a plate provided with a groove f, designed to form a needle-way, such plate being secured to the feed-Wheel E by the central screw f.

The lower end of the sleeve Z is IOO The arm E2 is bent, as shown, at the front end, and is otherwise curved and formed, as shown, being supported intermediate of its length on the arm G, secured on the end of the rock-shaft g, suitably journaled in the easing. The arm E2 is supported at the rear end by an arm G', pivotally supported on the stud g', journaed at the back of the casing.

G2 is an arm secured to the rock-shaft g within the casing and connected'by a rod g2 to a bell-crank lever G3, journaled between the lugs a at the back of the casing. The forward end of the rod g2 is threaded and provided with the adjusting-nuts g3 and a spiral spring g4, extending between such adjusting-nuts and the back of the casing and encircling theI rod g2.

It Will now be seen by depressing the outer end of the bell-crank lever G3 the arm G will be moved forwardly, and thereby throw the feeding-Wheel E away from the feedingwheel D, so as to permit of the insertion of the work. The tension required for holding the feedingwheel .E against the feeding-wheel D is of course regulated by the nuts g3 and lspring gi, hereinbefore referred to.

At the lower end of thearbor D and within the offset A' of the casing I secure the ratchetwheel H, which is provided with ay downwardly-extending hub t. Upon the hub /L I journal a sleeve H', held in position by a washer la' and screw h2. On this sleeve H', I provide the radially-extending arms H2 and H3. Upon the arm H2, I secure the springheld push-pawl h3, and upon the frame I pivot the spring-held locking-pawl if. Both pawls engage with the ratchet-wheel H, as indicated.

I is a lever provided with a central opening c', through which extends the stationary counter-shaft J. The lever I is provided with a forked upper end I', within which is located -the eccentric K, secured on the main shaft B. |I`he inner end of the lever I is pivoted on a pin i', secured on the rocker-arm J'.

j is a rod connected at one end to the pin c" and at the opposite end to a pin h3 on the armI-I3.

ct' is a slot in the frame opposite and of substantially the same size as the slot 2 in the lever I.

2 is a screw having located at one end the block 3, which is designed to it within the slot 2 and being provided with a head 4 and thumb-nut or wheel 5 for clamping the screw 2, and consequently the block 3, in any desired position in the slot 2. The screw 2 and block 3 serve as a fulcrum for the lever I, and it will be seen that such fulcrum is readily adjustable.

The eccentric K as the'shaft B is caused to -revolve rocks the lever I on its adjustable vertically.

L is Ythe needle-bar, which is journaled in suitablebearings in the front and back of the casing, through both of which it extends.

lZ is a bracket secured to or forming part of the front end of the needle-bar, and Z' is a straddle-braeket fitting over the lower front end of the bracket Z. The lower end of the straddle-bracket Z is provided with a recess Z2, and the front end of the bracket Z is also provided with 4an oppositely-located recess Z3, and between the recesses, which extend longitudinally in the brackets, is held the needle 6, such needle being clamped in position by means of the set-screw 7, extending through the top of the straddle-bracket Z2 and abutting the top of the depressed lower portion of the bracket Z.

M iS a depending fork secured to the needle-bar L by the set-screw m. The prongs of the fork M extend to each side of the block e3 on the crankpin c and hug such block closely. The bottom end of the fork extends into a guideway M', secured to the shaft J. It will thus be seen that upon the rotation of the main shaft B the requisite reciprocating movement is imparted through the fork M to the needle-bar and the needle-bar is held from swinging in its movement, and thereby the lateral sway of the needle is prevented as -it reciprocates over the feeding-wheels.

A4 is a cover for the casing, which is hinged at the back and is provided with an upwardlyextending lug carrying a thread-tension device a". rl`he front end of the cover is provided with an opening a, located oppositev the opening Z7 at the top of the casing.

8 is a spring-arm secured to the casing beneath the opening a7, and 9 is a pin provided with a head against which such spring-arm is designed to come in contact to produce a tension on the thread as the needle moves forward. The course of the thread l0 is indicated by dotted lines in Fig. l.

N is the looper-arm, which is in curved form, as shown, and has a forward end provided with a toe n of a form which it is not necessary here to describe. The looper N in -the working of my machine coacts with the needle, as is well known in machines of this class, and in so coacting the toe n must be given to form the loop in sewing a lateral, backward, and forward movement and substantially at the same time a reciprocating movement from front to back, as well as a downward movement over the feed-wheel D in proximity to the rim. In order to effect this movement, I carry the looper N in the socket end of a lever N. The rear end of the looper extends through a sleeve n', such sleeve being held in position in the lever by a set-screw n2. The lever has a lateral off- IOO IIO

IZO

set N2, and such oset abuts the upper end of the bellcrank O, being pivotally secured therein by the pin o. The bell-crank O is pivoted on a pin o', having bearings in the frame, and has a rearwardly-projecting forked lower end which extends over an eccentric O, secured on the shaft B. The rear end of the lever Nl is connected by a link 9 to a bellcrank 10, journaled on the counter-shaft J. The connection of the lever to the link is made by a pin 11, having an eccentric-pin 11 located in the end of same. By unscrewing the clamping-screw connecting the lugs n3 at the end of the lever and turning the pin 11 the de# sired adjustment may be given to regulate the amount of downward throw of the front end of the looper. The lever N is so set that it inclines toward the vertical plane passing through the needle, and this is preferably so, as -it enables the pointed end of the looper to t more closely the inner contour of the rim of the feed-wheel D when the looper has reached the limit of its downward movement toward the feed-wheel. Such incline of the lever and looper also serves to facilitate the passage of the needle into the loop, which is an important desideratum.

The bell-crank l0 has a roller 10 pivoted at the rear end, which extends into a cam-groove 12 in the cam-wheel l2, and it is this camgroove which imparts the necessary vertical movement to the rear end of the lever N', and consequently to the forward end or point of the looper.

The reciprocating movement of the looper N is imparted to it by the eccentric O acting within the forked lower end of the bell-crank O, as hereinbefore described, thereby tilting the bell-crank, which is pivotally connected to the looper-holder N. v

In order to impart alateral oscillating movement to the looper N, I provide the following simple mechanism. P is an arm pivoted on a stud p, held in the front of the casing. Q is a peripheral cam secured on the shaft B. p is a roller pivoted on a pin p2, fixed in the upper end of the arm P and extending into the groove of the peripheral cam. R is a guideway formed on the upper end of the arm P. S is a rod having journaled on the lower end the rotatable ball-shaped roller s and having the upper end formed in the shape of a clamping-sleeve s', through which the looper N extends and to which the sleeve s' is clamped by the clamping-screw s2, extending through the lugs s3, forming portion of the sleeve. The clamping-sleeve s extends slightly over the sleeve n', as indicated in Fig. 5,'in order that should the looper be withdrawn the sleeve n will support the clamping-sleeve in position, so that the looper may be inserted through the sleeve again. The cam-groove imparts an oscillating movement to the bottom of the rod S, and thus it will be seen a similar movement is imparted to the forward end or toe n of the looper. As, however, the looper is imparted a reciprocating movement from front to rear, at the same time it will be seen that the guideway R serves to allow of the oscillating lateral movement being imparted at the same time that the reciprocating movement is imparted, as the roller during the oscillating movement will pass backwardly and forwardly within the guideway R. It will consequently be seen that the looper is given its reciprocating, lateral oscillating, and required vertical movement necessary for its proper coacting with the needle by the mechanism I have hereinbefore described.

It Will be apparent from this description that on account of the cam and eccentric motions hereinbefore described for imparting the requisite movements vibration is reduced in my machine to a minimum, and consequently the wear and tear are minimized and the durability of the machine increased to a maximum.

What I claim as my invention isl. A fur-sewing machine, comprising an inner feed-wheel, an. outer feed-wheel, a needle, meansv for giving the needle a longitudinal movement, a looper having a curved end and toe, means for giving said looper a reciprocating movement, means for giving the forward end of the looper a lateral oscillating movement, means for giving said enda risingand-falling movement said means being independent of each other and means including an eccentric for regulating the rising-and-falling movement, substantially as described.

2. The combination with the looper and looper-holding lever, of a bell-crank journaled in the frame and pivotally connected to said lever, means for tilting the bell-crank so as to impart a reciprocating movement to the looper, a counter shaft, an arm journaled thereon, a link connected at one end to the arm, a pin extending through the end of the looper-lever said pin having an eccentricallyarranged projection, said projection extending through the opposite end of the link, means for imparting a rocking movement to the arln and means for giving said lever a rocking movement.- I

3. The combination with the looper and the looper holding lever suitably pivoted and means designed to impart a reciprocating movement to the looper means for giving the end of the looper an up-and-down movement, of a rod provided with a clamping sleeveshaped upper end fitting within a notch in the looper-lever and through which the looper extends, an arm journaled on the stud within the frame and providedwith a guideway, a ball-shaped roller journaled on the lower end of the rod and located in the guideway, a roller journaled on a pin on the arm and a peripheral cam secured on the main shaft and into which such roller extends as and for the purpose specified.

4. The combination with the looper and IOO ISO

looper-holding lever, means for reciprocating said looper, means for giving the end of said looper an up-and-down movement, a rod having a clamping-sleeve at its upper end, said looper-lever having a recess near one end into which said sleeve is adapted to fit, an internal sleeve having one end extending into the recess over which the clamping-sleeve extends so as to hold said clamping-sleeve in position to receive the looper and means for oscillating the rod, substantially as described.

5. The combination with the needle and needle-bar held in suitable bearings in the casing, of the main divided shaft journaled in the casing and provided at the point of division with inner end disks a pin removably connected to said disks, a block journaled on said pin between the disks, a depending fork secured to the needle-bar and 'straddling the block on the crank-pin and a guidevvay for the lower end of the fork as and for the purpose specified.

6. The combination with the needle and needle-bar and looper-bar, of the main divided shaft journaled in the casing, disks mounted at the point of division of said shaft, a crankpin connecting said disks, a block journaled on said pin, a depending fork secured to the needle-bar and straddling the block, one of said disks having a cam-groove therein, a bar having a portion engaging said groove and a connection from said bar to the looper-bar for giving the end of the looper-bar a reciprocating movement.

GEORGE LAW'soN BALLARD.

Witnesses:

B. BOYD, M. MOLAREN.

Images