US732573A

US732573A - Stop-motion.

Info

Publication number: US732573A
Application number: US9481102A
Authority: US
Inventors: George A Martin
Original assignee: Individual
Current assignee: Individual
Priority date: 1902-02-19
Filing date: 1902-02-19
Publication date: 1903-06-30
Anticipated expiration: 1920-06-30

Description

PATENTED JUNE 30, 1903.

G. A. MARTIN. sToP MOTION.

APPLIUA-TION FILED FEB. 19. 1902.

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STOP MOTION.

APPLIOATION FILED rma. 19. 1902.

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G. 2A. MARTIN.

' sToP MoTIoN.

APPLIOATIQN FILED PEB, 19. 1902.

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L WS@ .jfl l v v ATTORNEYS UNITED STATES Patented June 3o, 1903.

PATENT OFFICE.

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SPECIFICATION forming part of Letters Patent N o. 732,573, dated June 30, 1903.

Application tiled February 19,1902. Serial No. 94,811. (No modeLl T0 a/ZZ whom it may concern:

Be it known that I, GEORGEA. MARTIN, a citizen of the UnitedStates, and a resident of Myerstown,in the countyof Lebanon and State of Pennsylvania, have invented a new and Improved Stop-Motion, 'of which'the following is a full, clear, and exact description.

The object of the invention is to provide a new and improved stop-motion, more especially designed for use'on knitting-machines, which is simple and durable in construction and arranged to insure a quick stopping of the machine as soon as ayarn or thread breaks or gets caught in the knot-catchersor becomes fastened on the spool or runs slack from the spool.

The invention consists of novel features and parts and combinationsof the same, as will be more fully described hereinafter and then pointed out in the claims.

A practical embodiment of the invention is' represented in the accompanying drawings,`

forming a part of this specification, in which similar characters of reference indicate corresponding parts in all the views.

Figure lis a side elevation of the improvement as applied to a circular-knitting machine. Fig. 2 is an enlarged plan view of the improvement. Fig. 3 is a sectional plan view of part of the same on the line 3 3 of Fig. 5. Fig. 4 is a plan view of the knot-catchers. Fig. 5 is a front elevation of the improvement. Fig. 6 is a similar view of the same, showing the parts on one side in position when the thread or yarn is broken; and Fig. 7 is a sectional side elevation of part of the improvement, the section being on the line 7 7 of Fig. 3.

On the bed of the knitting-machine is se-` cured a horizontally-extending bracket A supportinga hollow post B, through which extends a drop-rod C, provided near its upper end with a col-lar C', (see Fig. 7,) adapted swings the lever D out of engagement with the collar C', so that the -rod C drops lin the 'hollow post B and in doing so actua-tes the belt-shifting device to move the belt from the fast pulley to the loose pulley and stop the machine.

As shown in Fig. 1, the lower end of the dro p-rod C isprovided with a foot C2, adapted to engage a disk G,'adjustably secured by a vset-screw or other means on an arm G', proj ectin g from a shaft G2, carrying a belt-shifter arm G2, connected with a belt-shifter H. The disk G is made adjustable, so that the device can be readily adapted to knitting-machines of different makes and sizes. Now when the rod C drops, as above' described, its foot C2 dropsonto the disk G, so as to impart a downward -swinging motion to the arm G',

to turn the shaft G2 and swing the arm 'GS pin F', normally engaged at the underside by the inner ends of tw'o levers I, fulcrumed at I on the head B' and. extendingl in opposite directions, each of the levers I having its outer end I2 curved and engaged by an eye J held to swivel in an arm K' of a bell-crank lever K, Vnormally heldin a horizontal position by the yarn or thread L, passing through oppositely-disposed notches N in a weighted lever-'frame N, between the side arms of which-passes the bell-crank lever K. The

ylever-frame N is formed with a shaft N2, j ournaledin the outer end of thehead B', and on the said shaft N2 is secured arearwardly-extending arm N2, carrying a counterweght'N4, so as to normally hold theA lever-frame Nin a horizontal position, as plainly indicated in Fig. 5.

Now in case the-.thread or yarn L breaks then thebell-crank lever K swings downward by its own weight and in doing so causes its arm K and eye J to impart a downward- IOO.

swinging motion to the lever I, so that the inner end thereof presses the pin F' in an upward direction to swing the catch F upwardly and out of engagement with the front end of the lever D, so that the spring E thereof swings the front end of the lever outward andout of engagement with the collar C to allow ,the rod C to drop for shifting the belt, as previously explained.

In case the yarn becomes fast between the machine and its spool then the pull exerted on the yarn by the machine causes a swinging of the lever-frame N in a downward direction, and as the bell-crank lever K rests on the downwardly-moving yarn L it is evident that it swings with the frame, and its arm K' and eye J imparta swinging motion to the lever I to swing the catch F ont of engagement with the lever D.

A similar movement takes place when a knot gets caught in a knot-catcher, and in case the yarn becomes` too slackbetween the spool and the machine then the weight of the bell-crank lever K on the yarn overcomes the tension thereof, and consequently swings downward to impart a swinging motion to the lever I for swinging the catch F upward.

In order to insure a quick dropping of the rod C, I provide a spring-pressed arm O, pressing on the upper end of the rod C, the said arm O being secured on a shaft O', journaled in the. head B and having an arm O2 connected by a link O5 with the rear 'end of the lever D. (See Figs. 2 and 3.) Now when the lever D is released and the spring E swings it into an outermost position then the lever exerts a pull on the link O3 and arm O2 to swing the arm O downward, and thereby cause the latter to exert a downward pressure on the rod C to insure a positive downward movement of the rod for swinging the arm G' downward.

Each of the yarns L unwinds from the usual spool P, the yarn extending upward from the spool and passing through an eye Q, and then through a slotted knot-catcher R and then passes to the notches N of the lever-frame N, as previously explained, it being understood that the yarn passes from the notches N to the machine in the usual manner.

The eyes Q and knot-catchers R are secured on the bracket A, as plainly shown in Figs. l and 4.

'Having thus described my invention, I claim as new and desire to secure by Letters Patent- 1. `A stop-motion, comprising a lever connected with the belt-shifter of the machine on which the stop-motion is applied, a hollow post supported on the machine, a drop-rod extending through said post and adapted to impart a swinging motion to the lever, a supporting device for the drop-rod, a releasing device, a counterbalanced device over which the yarn passes, a device resting on the yarn and controlling the releasing device, and a device engaging the drop-rod and arranged to impart a downward movement thereto, the said device being connected with the supporting device and actuated thereby when the supporting device is released, as set forth.

2. A stop-motion comprising a lever having a member connected with a belt-shifter, and a member. provided with an adjustable device on its free end, a drop-rod adapted to engage said adjustable device to impart a swinging motion to said lever, a supporting device for the said drop-rod, to hold the latter normally out of engagement with the adjustable device on the lever, the said supporting device comprising a spring-pressed lever, engaging a collar on the said drop-rod, to hold the latter normally suspended, a locking-catch for holding the latter in a closed position, and a releasing device for the said catch, controlled by the yarn, as set forth.

3. A stop-motion comprisinga belt-shifting device a drop-red for imparting a swinging motion to the belt-shifting device, a supporting device for the said drop-rod, to hold the latter normally ont of engagement with the belt-shifting device, the said supporting device comprising a spring-pressed lever, engaging a collar on the said drop-rod, to hold the latter normally suspended, a lockingcatch for holding the latter in a closed position, a releasing device for the said catch, controlled by the yarn, the said. releasing device consisting of a lever engaging at one end a pin on the said catch, and a bell-crank lever having an eye engaging the other end of the said lever, the said bell-crank lever resting on a yarn on its passage from the spool to the machine, as set forth.

4. A stop-motion comprising a drop-rod for imparting a swinging motion to the belt-shifting device, a supporting device for the said drop-rod, to hold the latter normally out of engagement with the belt-shifting device, the said supporting device comprising a springpressed lever, engaging a collar on the said drop-rod, to hold the latter normally suspended, a locking-catch for holding the latter in a closed position, a releasing device for the said catch, controlled 4by the yarn, the said releasing device consisting of a lever engaging at one end a pin on the said catch, a bell-crank lever having an eye engaging the other end of the said lever, the said bellcrank lever resting on a yarn on its passagefrom the spool to the machine, and a counterbalanced, notched lever-frame, over which passes the yarn, as set forth.

5. A stop-motion provided with a counterbalanced lever-frame, having notches for the passage of the yarn, and a bell-crank lever fulcrumed on a shaft of the said lever-frame and resting on that part of the yarn extending between the notches of the lever-frame, the said bell-crank lever controlling the releasing device, as set forth.

6. A stop-motion comprising a drop-rod for actuating the belt-shifter, a spring-pressed lever for supportin g the said drop-rod in a nor IIO IIS

ing part of a belt-shifting device, a drop-rodV for actuating said lever, a spring-pressed 1ever engaging a collar on the drop-rod to hold the rod normally suspended above the said lever, a catch for locking the spring-pressed lever in position when engaging the said droprod, a releasing device for the catch comprising a releasing-lever engaging said catch, a bell-crank lever for actuating the releasinglever, the said bell-crank lever restingon the yarn, andgmeans actuated by the said springpressed lever when released for imparting a positive downward motion tothe drop-rod, as set forth.

8. A stop-motion, comprising a lever connected with the belt-shifter of the machine on which the stop-motion is applied, a disk adjustably secured on the free end of said lever, a horizontally-extending bracket on the said machine, a hollow post supported on said bracket, a drop-rod extending through said post and adapted to engage the said disk on the lever to impart a swinging motion to the lever, a supporting device for the said droprod to hold the latter suspended above the lever, the said supporting device comprising a spring-pressed lever, a locking-catch for the lever, and a 'releasing device for the catch controlled by the yarn, and an'arm engaging the drop-rod, and connected with the springpressedlever, the said arm being actuated by the lever when the latter is released, as set forth.

9. A stop-motion, comprising a drop-rod for actuating the belt-shifter, aspring-pressed lever f or supporting the drop-rod -in anormal uppermost position, means for locking thelever in supporting position against the tension of its spring, a releasing device for said means, an arm engaging theupper end of the droprod, a shaft mounted to turn and carrying said arm, and a link connecting the said springpressed lever with an arm on said shaft, as set v forth.

In testimony whereof I have signedpmy name to-this specincationin the presence of two subscribing witnesses.

GEORGE A. MARTIN.

Witnesses:

MORRIS M. MILLER, WILLIAM F. MARTIN.