US388774A

US388774A - Egbert b

Info

Publication number: US388774A
Authority: US
Publication date: 1888-08-28
Anticipated expiration: 1905-08-28

Description

(No Model.)

B. B. GOODYEAR.

STOP MOTION FOR KNITTING MACHINES.

lP a t e I;ed Aug. 28, 1888 F i l irnn Srnrns nrnnr Orricn.

ROBERT B. GOODYEAR, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR OF TlVOTHIR-DS TO A. TAYLOR SON AND ABRAHAM LINCOLN GOODYEAR,

ALL OF SAME PLACE.

STOP MOTlON FOR KNITTING=WIACHINES.

$PECIPICATION forming part of Letters Patent No. 388,77 dated August 28, 1888.

Application filed February 2, 1898. Serial No. 262.787. (No model.)

To (ZZZ whom ii may concern:

Be it known that I, Bonner B. GOODYEAR, of the city and county of Philadelphia, and State of Pennsylvania, have invented an Im- 5 provcmcnt in Stop-Motions for Knitting-Machines, of which the following is a specificaticn.

My invention relates to stop-niotions for khitting-machines; and it consists of certain improvements,which are fully set forth in the following specification, and shown in the accompan ying d rawi n gs, which f rm part therco f.

It is the object of my invention to devise improved mechanism which will automatically stop the operation of the knitting-machine if at any time the thread should become broken or present a k not. If the machine is not stopped when this occurs, it is evident that the fabric knitted will be imperfect, and it is necessary that the machine be stopped to prevent this. To obviate the necessity of constantly watching the yarn or thread and to automatically put the machine out of operation in the case of breakage or knotting of the thread my invention is intended, and this result is accomplished by the mechanism shown in the drawings, in which Figure lis a plan view of a knitting-machine embodying the principles of my invention. Fig. 2 is a perspective view of the stopmotion. Fig. 3 is a front elevation of that part of the mechanism by which the stop-motion is operated by the thread, and Fig. 4 is a side eleva' tion of the shifting mechanism.

A is aknitting-head in an ordinary frame, A.

13 represents the knittingnecdles.

0 represents the old or ordinary threadgnides, through. small holes 0 in which the thread D passes to the needles.

E is a portion of the frame of the machine, upon which the stop-motion thread-guides and other mechanism operated by the thread are located.

I represents the stop-motion thread-guides, 45 constructed, preferably, of wire bent in the shape shown in Fig. 2, and having the upright portions secured to the frame E. In practice I prefer to use three of these guides I and to erect them parallel to each other.

F is a stand or frame, which may be constructed of sheet metal or any other suitable material. It is secured to the frame E, preferably midway between the upright parts of the guides I.

J represents floating bars or arms pivoted at j to the frame F, preferably constructed of wire and extending over the central guide, I.

G is a looselypivoted lever, pivoted to the frame F (which may have suitable extensions for this purpose) and having two parallel arms, G, extending out, preferably, in front and under the guides I. This lever G also has a short extension or arm, 9, extending out behind.

K represents two levers of angular or bellcrank shape, pivoted at k to the frame E and having one of their arms K forked to allow the thread to pass between the prongs.

L represents pins or stops upon the frame E to keep the levers K normally in position. The thread from the shuttle or bobbin is brought through the forked levers K and upward over the tops of the guides I, where it acts as a support upon which the floating arms or lever J rest; thenccit passes slightlydownward through the guides G to the needles B. 7 5

\Vhile it is preferred to employ two each of the lovers J and K and arms G, it is evident that only one of each may be used, or, in fact, any desired number, without departing from the principles of my invention, which are in 3 dependent of the number of these levers and arms.

H is awire or string connection between the short arm of the loosely-pivoted lever G and the trip M, to one arm of which it is secured. 8 This trip M, I prefer to construct in the form of an angular lever pivoted at m to a trip supporting arm, 0, which is journaled at P to the main frame A.

S is a clutch or belt-shifter, upon which the 0 tripsupporting arm 0 rests. This shifter is supported in an upright, U, of the main frame A, and is recessed in that portion immediately below the tripsupporting arm 0. In this recess is a spring lock or catch, T, which 5 normally presses against the side of the upright U.

V is a spring about the shifter S, which tends to throw the shifter forward. The lock or catch T, however, prevents this by holding the shifter in place.

8 represents pins upon the shifter S, between which the end of the Y=shaped lever WV is held. This Y-shaped lever is adapted to operate a clutch, X, loosely supported by a key or feather upon the power-shaft Q.

R is a wheel or hub having teeth or pro jections 'r on its periphery, and is carried on the shaft Q close to the trip M.

Z is the pulley, loosely journaled upon the power-shaft and having a recessed part, Y, adapted to engage with the clutch X.

Z is a gear-wheel, by which the head A is rotated in the usual manner.

In operation the thread passes from the bobbins to the needles over the guides I, as heretofore described, and the machine is put in motion. If, however, there should be a knot, as shown at d, in the thread, it is evident that as the'thread passes through the forked lever K the knot would be caught and would draw up the lever K, thus throwing down the other arm, K, of the said lever upon the arm G of the lever G. This will in turn depress the arm G and thus raise the short arm which, pulling upward with it the trip M, will throw one arm of this trip within reach of the teeth 1' of the wheel or hub B. When one of the teeth of this wheel Roomes in contact with the trip M, it will force the trip down, and with it its supporting-arm 0, upon the spring lock or catch T, which will be pressed down and will unlock the shifter S. This will then be shot forward through the force of the spring V. The end of the lever W will be carried forward by the pins 8 and the clutch X will be disengaged :from the pulley Z, and the machine will immediately be brought to rest. The broken or knotted part of the thread'will be repaired and the machine started again into operation. If the thread is broken without presenting a knot, the operation will be as follows: When the broken end of the thread is drawn over the guides I, it will be drawn from under the floating arm J, and consequently this arm J, having no support, will fall upon the arm G of the lever G, depressing it and operating the mechanism, as in the former case.

In place of the clutch X and lever W an ordinary belt-shifter, S, may be used, as shown in the dotted lines in Fig. 1. In this case Z will be a fixed pulley, and an additional loose pulley, Z, will be required.

The mere details of construction here shown are those preferred by me 5 but they are not to be considered limitations of my invention, since it is evident that they may be varied in many ways without departing from the principles of it.

Having now described my invention, what I claim as new, and desire to secure by Letters Patent, is

l. The combination of the rotary needlehead with two or more guides over which the thread is guided, one or more loose bars resting upon and supported by the thread guided by said guides, a loosely'supported lever arranged below said loose bars, a trip actuated by said lever when the bar drops upon it, a rotating part in connection with the knittingmachine having a projection or toot-h adapted to strike said trip, and mechanism, substantially as described, actuated by the trip to stop the rotation of the needlehead.

2. The combination of the rotary needlehead with two or more guides over which the thread is guided, one or more loose bars resting upon and supported by the thread guided by said guides, a loosely-supported lever arranged below said loose bars, a trip actuated by said lever when the bar drops upon it, a rotating part in connection with the knittingmachine having a projection or tooth adapted to strike said trip, and mechanism consisting of a movable bar, a spring to move said; bar, a catch to hold said bar against the spring, and a support for the trip adapted to actuate the catch and actuated by the trip, and means, substantially as set out, actuated by the movable bar to stop the rotation of the needlehead.

3. The combination of the rotary needlehead, a thread-guide, a loosely-supported lever, a pivoted forked lever between the fork of which the thread passes, adapted to operate the loosely-supported lever when a knot in the thread passes into the fork, power devices to rotate the needle-head, power-arresting de vices controlled by the loosely-supported lever when moved by the forked lever, consisting of a trip connected to the loosely-supported lever, a rotating part in. connection with the machine, having aprojection or tooth 1 adapted to strike the said trip,and mechanism, substantially as described, actuated by the trip to stop the machine on the knot in the thread passing to the needles.

4. The combination of the rotary needlehead, a thread-guide, a loosely-supported lever, a pivoted forked lever between the fork of which the thread passes, adapted to operate the loosely-supported lever when a knot in the thread passes into the fork, power devlces to rotate the needle-head, power-arresting devices controlled by the loosely-supported lever when moved by the forked lever,consisting ofa trip connected to the loosely-supported lever, a rotating part in connection with the machine, having a projection or tooth adapted to strike the said trip, and mechanism, substantially as described, actuated by the trip, consisting of a movable bar, a spring to move said bar, a catch to hold said bar against the action of the spring, and a support for the trip adapted to actuate the catch, and means, substantially as set out, actuated by the bar to stop the machine on the knot in the thread passing to the needles.

5. The combination of a rotary knittinghead, power stop-motion mechanism to rotate it, two or more threadgnides, 1, arranged parallel, the stand or frame F, located between the upright portions of said thread-guides I, floating bars or arms J, pivoted to said frame F, the loosely-pivoted lever G, arranged be low said bars or arms, and also pivoted to said frame F, a trip device controlled by said loosely-pivotedlever G, and stop-motion mech anism, substantially as set out, controlled by said trip device to stop the rotation of the needle-head if the thread should break and allow the bar J to fall.

6. The combination of a rotary knitting head, power stop-motion mechanism to rotate it, two or more thrcadguides, 1, arranged parallel, the stand or frame F, located between the upright portions of said threadguides l, floating bars or arms J, pivoted to said frame F, the loosely-pivoted lever G, having the parallel arms G, arranged below said bars or arms, and also pivoted to said frame F, a trip device controlled by said loosely-pivoted lever G, and stop-motion mechanism, substantially as set out, controlled by said trip device to stop the rotation of the needle-head if the thread should break and allow the bar J to fall upon the arms G.

7. The combination of a rotary knittinghead, power stop-motion mechanism to rotate it, a thread guide, I, the stand or frame F, located between the upright portions of said thread guide I, the forked levers K, the loosely-pivoted lever G, pivoted to the said frame F, a trip device controlled by said loosely-pivoted lever G and having the parallel arms G, stop-motion mechanism,substantially as set out, controlled by said trip device to stop the rotation of the needle-head if the thread should be knotted and the levers K should strike the arms G, and stop L, located on the frame of the machine to hold the levers K normally in place.

8. The combination of a rotary knittinghead, power mechanism to rotate it, two or more thread-guides, 1, arranged parallel, a frame or stand, F, located between the upright portions of said thread'gnides l, forked levers K, loosely-pivoted lever G, pivoted to the frame F, having parallel arms G, and short arm 9, trip M, supporting-arm 0, upon whi h the trip M is pivoted, link or wire H, connecting said trip M with the short arm g, shaft C2,, carrying toothed wheel R, adapted to operate the trip M, lock T, spring V, shifting' lever XV, clutch X, and policy Z.

9. The combination of a rotary knittinghcad, power mechanism to rotate it, two or more thread-guides, I, arranged parallel, a frame or stand, F", located between the upright portions of said threadguides I, floating bars or arms J, pivoted to said frame F, looselypivoted lever G, pivoted to the frame F, having the parallel arms G, and short arms 9, trip M, trip-supporting arm 0, upon which the trip M is pivoted, link or wire H, connecting said trip M and short arm 9, shaft Q, carrying toothed wheel R, adapted to operate the trip M, lock T, spring V, shiftinglever W, clutch X, and pulley Z.

In testimony of which invention l hereunto set my hand.

ROBERT B. GOODYEAR.

W'itncsses:

R. M. HUNTER, Rienn. S. CHILD, Jr.