US1287087A - Locking device for stop-motions of knitting-machines. - Google Patents

Description

v c. R. osmom, s. LOCKING DEVICE FOR STOPMOTIONS 0F KNITTING MACHINES.

APPLICATION FILED APR-$8.191R

' Patented Deg. 10, 1918.

I WITIV ESSES fineness.

" all whom it may concern:

1 Be it known that I, CI'IARLES IRANoALL'Os: 'rno'M, Sn, a. citizen of the United States, and

a resident of Portsmouth, in the county of sfSc-ioto and State of ()hio, have invented certafinnew and useful Improvements in Locking Devlces for Stop-Mot ons of knitting- Machines, of which the following is a specification.

[My present invention relates generally to top motions for knltting machines and more particularly to certain apparatus in r'ionnection with stop motions for circular knitting machines whereby to support in set, locked or inactiveposition those actuating members not in use at any given time. In connection with purely mechanical stop fmo'tio'ns to which the present invention re- "l'zrts, for instance What is known as the 201 "Pete1'1t510,839, dated December 12, 1893, it 'isnsuel to provide two ends for each feed on the knitting machine. "eiglmfeed knitting machine, "the stop me- Qraw'ford stop motion set forth in U. S.

Thus with an tion has a sixteen-end capacity and when the knitting machine is running with s sin gle thread at each feed, it is obvious that the stop motion has an actuating member at each feed to be taken care oi in some 1nanner in View of the fact that in machines oi this type the yarn itself normally holds the stop member inactive. The usual method of taking care of those actuating members for which there is no yarn is by means of elastic bands or other supports of a detachable temporary nature which become lost and which frequently break so that clinging to the mechanism they frequently operate to prevent the other and active members from properly functioning, thereby rendering the stop motion inoperative.

As proposed by my invention the stop motion has a permanent fixture with a plurality of permanent pendent movable devices engageahlewith the stop motion mechanism to hold in the set, locked or inactive position those actuating members which are, at least for the time being, out of operation by virtue of there being no thread or yarn to engage therewith.

In the accompanying drawing illustrating my present invention Figure 1 is a detail persnective view 0i: my

Specification 01 Letters Patent.

cnennns nemesis. osrsois, es, en ronrsreonrn, ems.

LOCKING DEVICE 30R STQP-TMOTIGNS 0F KNITTING'MACHINES.

Patented hes. in, ieis.

Application filed April 18, 1918. serial No. 2295517.

improved locking ring with its series or" pendent arms,

Fig. 2 is s verticsl section through a portion of a stop motion with my improvements attached, taken substantially on the line .22 of Fig. t,

Fig. 3 is. a. vertical section taken snostmn tially on the line 3 3 of Fig. 2, and

Fig. 4 is a top plan view of a portion of the mechanism.

Referring now to these figures I shown the spider casting or frame of a. Crawford stop motion at 10. with its radial arms 11, one'for each thread, and with its cap plate 12. the grooves 13 of the latter of which may be utilized to also secure :1 pair of diametrically opposed outstanding clips 14:, which as best seen in Fig. serve to hold the locking ring 15 provided lay my invention.

This locking ring 15 is seated upon inner portions of the series of arms 11 of the casting 10 and surrounds the cap plate 12 so that the plurality of pendent locking arms 16 will depend at the sides of alternate arms 11 of the series. and thus take care of the set-nating members as presently described for which there may not at certain times be threads.

Each of the arms 11 has fork 7.7 at its outer end and e longitudinally extending rock wire 18 along its under face. a hoot: 19. having connection with the inner portion of the rock wire. As well known, the thread of each arm of the stag moticm passes inwardly through the fork 14 along the rock wire 18 and downwardly over the hook 19 between what is known as the stools 20 depending from the arm 11 and an adjacent portion of the drop Wire 21, the position of the thread thus preventing the drop wire from downward movement to stop the machine.

Each of the pendent locking arms 16' of the. locking ring 15 as provided by my invention is offset intermedieteits e .ds to provicle an angular portion which es best seen in 3 extends beneath the respective frame arm 11 for engagement the hook 19. Each arm 16 is further provided with 3. second offset 23 below the offset and in a direction at right angles to the offset 22 so as to bring its lower portion into a. vertical straight line, adapting the same to extend,

.the character between the staple 20 and a portion of the drop wire 21in substantially the same manner as the thread usually does in normal operation all as clearly seen by a comparison of Figs. 2 and 3.

It is obvious therefore that the several pendant locking arms of my improved locking ring act to hold the desired drop wires, which I have heretofore generically termed actuating members, in inactive position known as the set or racked position just as the thread is intended to do, and that these locking arms are capable of ready convenient movement to inactive positions, constitute permanent means in cOnnection with the stop motion to the desired end and obviate all danger of accidental displacement and interference with other of the actuating members or drop wires in their intended duties when a thread t'eed fails or a thread breaks.

In supporting the series of arms 16 movably in connection with the ring 15 it will be noted that the latter is provided at equidistantly spaced points therearound with annular grooves around and within which the upper inner ends of the several arms it are bent or curved so that while movable, they are prevented from displacement with respect to one another around the ring and thus held in position ready to be dropped into engagement as in the position shown in Figs. 2 andB.

It will also be observed that the foregoing structure permits of folding the several pendant arms upwardly and inward! upon the cap 12 in disuse as seen in Fig. i, this being done when all sixteen threads are in use. so as to avoid any danger of interfering with the complete operation of the stop motion under these circumstances.

I claim l. The combination with a stop motion of described, including a pluralitv of thread guides, each having an actuating member normally engaged by the thread to support the actuating member in inactive position,ot' a support-securcd to the stop motion and a plurality of locking arms carried by said support adjacent certain of the thread guides and movable into and out ot engagement with the actuating members thereof for the purpose described.

2. The combination with a stop motion of the character described, including a plurality of thread guides and an actuating member at each of the thread guides normally engaged by the thread to hold the said member in the set or inactive position, of a supporting member mounted on a part of the stop motion, and a plurality of locking members pernnrnently connected to said support: and movable with respect thereto into and out of engagement wit 1 the actuating membel's at certain ofi the thread guides, for the purpose described.

3. The combination with the character described, rality of thread guides. each ha ving an actuating mcmber normally engaged by the thread passing through the said guides, of a plurality of locking arms adiacent certain oi the thread uidcs for engagement with the actuating members thereof, and a common support for thb locking arms in connection a stop motion of.

with the stop/[motion and with respect to] are movable, for the' which the said arms purpose described. V

4. A device otithc character described consisting,ot a supporting ring having a pluralitycot'movable pendant arms in spaced relation thertau-omid, each of which arms has its upper cm'L/l msclv bent around the said ring and is provided with mediate. its ends t'or t} I ic purpose described. A (l(*\'l 'i* ot the character described,

consisting of a ring-shaped support having including a pin-- an oll'set. inter annular grooves at spaced points and a plurality ot pendant locking arms, the upper ends of which are bent around the supportwithin the said grooves to the arms to the support. (llAltlillS RA XDALL S'IROM, Sn. Witnesses:

(7. l). Doomxu, I). l). Mrrt'uun.

movably connect

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