US2497560A

US2497560A - Stop motion for braiding machines

Info

Publication number: US2497560A
Application number: US46282A
Authority: US
Inventors: Robideau Joseph
Original assignee: Individual
Current assignee: Individual
Priority date: 1948-08-26
Filing date: 1948-08-26
Publication date: 1950-02-14
Anticipated expiration: 1967-02-14

Description

Feb. 14, 1-950 J. ROBIDEA\U 2,497,560

STOP MOTION FOR BRAIDING MACHINES Filed Aug. 26, 1948 A-r TORNEYS.

Patented Feb. 14, 1950 U NIT ED STAT ES PAT ENT FF] C E -2,497,5c0 STOP MOTIQN FOR] MACHINES Joseph Robideau, Cumberland, R 1 Appliciiffiinl All'guS'tZfi, 1948, 'SeriaZINo. 46,282

8 Claims.

1 This invention relates more'particularly that type in which there is an upstanding guide post on the 'quoitxplateand vide a means for-istoppingvthe machine when the yarn which extends 'through issguided by the guide posts fails; Another object of this invention is 'to utiliz the "stop motion already provided actuated byea mechanism on the carrier for the stopping of the machine;

Another object of the invention is'to provide a stop motion "which is partly carried 'by' the guide pbst and' partly :-carried by the' carrier but which willcome in to co-active relation "upon the breakingof the yarn whichiis guided through the guide post.

Another object of this invention is'toutilize gravity as the force which moves the parts-into stop motion actuating position.-

With these and other objects' in View, them vention consists of certain novel features of con struction, as will be "more f ullyfdescribed and particu larlylpointed out in the appended claims;-

In'the accompanying drawings? I Figure 1 is anelevation with the :lower part ofthe machine in section showing the jragmerital portion of 'a'braider machine which incorporates this invention;

.Figurez is a sectional view on'line 2--2 of Figure 1;

Figure 3 iswan elevation of a fragmental part ofaa acarrier illustrating the -;attachment to the carrier which incorporates theinvention herein;

Figure 4 is an end view of that portion of the carrier :shown in Figure 3; land- :FigureS is a sectional View on line -5-- 5-of Figure 3 of the carrier shown in Figure 3.

In proceeding with this invention 1 vprovide a lever whichispivoted on the guide ,post through which the warp yarns are guided in a braider machine 'and-l-ihold this lever in raised position bya Jlink beneath which'the'warp yarn-is looped o a braiding machine,

and raised by "the tension" of the warp yarn as her or arm on the carrier in an elevatedpositi'on so thatit will not "engage the stop motion mechanism' of the machine. However; when the momher on the postengages the trigger and moves:

the same, the arm on the carrier 'is-then permitted todrop'to a position to engage the stop motion of the machine and cause the'machineto be stoppedjus'tthe same as if the weight on the carrier had droppedvto its lower position by failure of yarnof'the bobbin on thecarrier.

With-reference to the drawings, I0 designates the top plat'e of' a-braider carrier machine-in which there is #provided the serpentine raceway Il'for guiding a braider carrier 12 by means ofgear mechanism 1 3 located between the topplate H! and bed- .plate M; the carrier being, moved by means 'of the :horns' l.5 on the gears to pass: the .same through thezserpent'ine raceway for intertwining the 'yarn which is carried by 'th braider'carrier. v I The braider carrier [2 consists .of a base t5 having flanges Hi and I! to engage 'eitherlsi'de of the'top plate I O. A bobbin spindle .IB-weX- tendsupwardly from the standard portion 19 of the base to receive the bobbin 20 which ,is' rotatably mounted upon this spindle. This bobbin has iratchet teethIZI .at its lower end to be engaged by the pawl :22' .t0':c0ntr.01 the let-off of the yarn 'on the bobbin zll. This pawl is-actuated-bylthe link 22 slidable on the guide rod-:23 and pressedzdownwardly' by 'a :spring' "24; This link is actuatedhy the weight 25 guided on the guide rod 26 and pressed-downwardly by .theilong spring 231. This weight carries "the-usual hook beneath which the yarn extends so that as the yarn is taken up at the may pole, the weight lift-upwardly, to trip the pawl and permit more yarn to be fed in a usual manner. The weight 25 carries at its lower portion a means for actuati-ng the--stop1m0tion of the machine in ausual mannerxandas the weightis usually lifted and not in its lowermost position, the stop motion will not be actuated until the yarn on thebobbin breaks-when the weight will drop to its lower position' to cause actuation of the stop motion. I have attached to the usual braider carrier an arm- 30 which is generally L-shapedas shown in- Figure .5 having-a portion 31 and ..a,-nother,por-, tion 32-'at right angles thereto, which second portion is pivoted-to the standards [,9 :onthe ,pivot 3 pin 33 which extends through the latch 22. When this arm 30 is in its lowermost position, as shown in dotted lines in Figures 1 and 3, its portion 3| will serve the same function as the stop motion portion of th weight 25 and will engage the stop motion of the machine to stop the machine.

In order to hold this arm 3|] in raised position, which is inoperative so far as engagement with the stop motion is concerned, I have provided a trigger 35 having a mid portion 36 which is pivoted or rockably mounted about a vertical axis as at 3! (see Figure 3 or 4) with a finger portion 38 extending beneath the arm 30 to support the same and a second finger portion 39 extending outwardly away from the standard l9 so that if this portion 33 is engaged and the trigger rocked about its pivot 31, the arm 30 will be released and will drop by gravity. In order to retain the trigger in a position whereby it engages the arm 30, I have provided a spring designated generally 40 which has a mid portion 4| pivoted in the standard l9 as shown best in Figure 4, with one arm portion 4-2 extending up to engage the finger 39 to swing the trigger so that its finger 38 will extend beneath the arm 30 and support it; while at the other side of this pivoted portion 4| there is a finger 43 which engages the base of the carrier and serves to maintain a tension on this spring for swinging the trigger as above described.

In the center of the quoit plate 45 there is a post designated generally 46 through the center 4! of which a warp yarn 48 (see Figure 1) extends. This warp yarn is drawn from a reel or some supply beneath the base plate of the machine and usually is provided with some tension means to afford some control upon it. In the present case, this post serves as a support for a member or lever 49 (see Figures 1 and 2) which is pivoted as at 50 on the post and will tend to swing by gravity into the position shown in dotted lines in Figure l, and when in this dottedline position will engage the trigger finger 39 carried by the carrier of the machine and which has above been described. However, in order to hold this member or lever upwardly, I have pro vided a link which engages the lever and which is vertically guided as at 52 and provided with a hook 53, beneath which the warp 48 extends so as to lift this link by the tension of the warp yarn 48 and serve to maintain the lever or member in raised position as shown in full lines in Figure 1 and out of the path of movement of the trigger finger 39. However, should there be a failure of tension or a failure by brealn age of the warp yarn 48, then the link 5! would permit the lever or member 49 to drop into the dotted line position shown in Figure 1 so that it would then engage the finger 39 of the trigger to swing the trigger to permit the arm 30 to drop into a position to cause it to engage the stop motion of the braider carrier and stop the machine.

I claim:

1. In a braiding machine, a stationary post through which yarn is guided, a movable braider carrier, a stop motion actuating arm pivotally mounted on the carrier to be rocked about a substantially horizontal axis, a trigger mounted for rotational movement about a substantially vertical axis and movable into engagement with said arm to hold the same in inoperative position, said trigger having a projection thereon engageable to rock said trigger out of engagement with said arm to permit the same to be rocked by gravity to be positioned in the operative position, a guide post on said machine, a member movably mount ed on said post in the path of said projection, means engaged by the yarn passing through said post to hold, by tension on the yarn, said memher out of the path of said projection but permitting the member to be moved into the projection path upon failure of said tension whereby to engage the projection to cause the arm to move into operative position.

2. In a braiding machine as in claim 1 in said member is pivotally mounted.

3. In a braiding machine as in claim 1 wherein a spring assists said trigger in maintaining said arm in inoperative position.

4. In a braiding machine, a movable braider carrier, a stop motion actuating arm mounted for movement about a substantially horizontal axis, a trigger mounted on said carrier for movement about a substantially vertical axis and movable into engagement with said arm to hold the same in the inoperative position, said trigger having a projection engageable to move said trigger to disengage the same from said arm to perwheremit the arm to be moved by gravity to an op-- erative position and means for engaging said projection to disengage said trigger from said arm.

5. In a braiding machine, a stationary post through which yarn is guided, a movable braider carrier, a stop motion actuating arm pivotally mounted on said carrier for rocking movement about a substantially horizontal axis, a trigger rockably mounted on said carrier and having an ofiset portion movable to be positioned into engagement with said arm to hold the same in an inoperative position, said trigger having a projection engageable to rock said trigger to disengage said offset portion from engagement with said arm to permit the arm to be moved by gravity to an operative position, and means carried by said post movable into the path of said projection for engaging and rocking the same.

6. In a braiding machine, a stationary post through which yarn is guided, a movable braidercarrier, a stop motion actuating arm pivotally mounted on said carrier for rocking movement about a substantially horizontal axis, a trigger rockably mounted on said carrier to be moved about a substantially vertical axis and having an ofiset portion movable to be positioned into engagement with said arm to hold the same in an inoperative position, said trigger having a projection engageable to rock said trigger ,to disengage said offset portion from engagement with said arm to permit the arm to be moved by gravity to an operative position, and means carried by said post movable into the path of said projection for engaging and rocking the same.

-7.- In a braidin machine, a movable braider carrier, 2. stop motion actuating arm'mounted for movement about a substantially horizontal axis, a trigger mounted on said carrier for rock-' ing movement about a substantially vertical axis and having an offset thereon movable to be positioned into engagement with said arm at a location beneath said arm to hold the same in an inoperative position, said trigger having a projection engageable to rock said trigger to move said offset from beneath said arm to permit the arm to fall by gravity in an operative position, and means for engaging said projection to rock said arm.

8. In a braiding machine, a movable braider carrier, a stop motion actuating arm mounted for movement about a substantially horizontal axis, a trigger mounted on said carrier for rocking movement about a substantially vertical axis and having an offset thereon movable to be p0- sitioned into engagement with said arm at a location beneath said arm to hold the same in an inoperative position, said trigger having a projection engageable to rock said trigger to move said offset from beneath said arm to permit the arm to fall by gravity in an operative position, and means for engaging said projection to rock said arm, and a spring engaging said projection to assist said trigger in maintaining said arm in inoperative position.

JOSEPH ROBIDEAU.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS 10 Number Name Date 1,961,620 Murray June 5, 1934 1,964,481 Plumb June 26, 1934