US1813888A - Intermittent thread cutting loom temple - Google Patents

Description

July 7, 1931. c. H. DRAPER 1,813,888

INTERIITTENT THREAD CUTTING LOOK TEMPLE Filed Sept. 17, 1929 a Clur H. Draper AiTys.

Fatented July 7, 1931 UNITED STATES PATENT OFFICE CLARE H. DRAPER, OF HOPEDALE, MASSACHUSETTS, ASSIGNOR TO DRAPE'R CORPORA TION, OF HOPEDALE, MASSACHUSETTS, A CORPORATION OF MAINE INTERMITTENT THREAD CUTTING LOOM TEMPLE.

Application filed September 17, 1929. Serial No. 393,181.

This invention relates to mechanism for parting the filling ends such as are leftextending from the selvage after replen1sh- ,ment in an automatic filling replenishing loom. Such mechanisms are commonly associated with the loom temple. In order that the parting mechanism may not be continuously in operation when its operation is only necessary for a short period following replenishment, means have been provided heretofore for effecting an intermittent operation of this mechanism. The patent to Stimpson, No. 704,715, granted July 15, 1902 discloses one form of such an intermittently acting filling parting mechanism carried by a loom temple.

It is the object of the invention further to provide a construction such as shown in the aforesaid Stimpson patent with means which will hold the heel of the filling parter forward of the heel of the temple during the periods of inactivity of the parter.

i It is the object of the invention further vto utilize the relative movement which takes place between the temple supporting the parter and the temple stand to efiect the final withdrawal of the parter to a position where it will not be engaged by the lay or other actuating means during its periods of inand will be activity.

These and other objects and features of the invention will appear more fully from the accompanying description and drawings particularly pointed out. in the claims. 7

As the general construction and operation of filling parting mechanisms, loom temples and the parts associated therewith are well .known and familiar to those skilled in the acting thread cutting or filling parting temple with a preferred form of the invention embodied therein.

Fig. 2 is a top plan view of a portion of the construction shown in Fig. 1.

Fig. 3 is a side elevation on a larger scale of a portion of the construction shown in Fig. 1 with the parts shown in the position assumed when the filling parting means is inactive.

Fig. 1- is a detail in front elevation of the upper left-hand end of the construction shown in Fig. 1.

Fig. 5 is a. view similar to Fig. 3 of a portion of the construction shown therein with the parts in the position assumed for starting the release of the filling parting mechanism to operative position.

The breast beam 1, the lay 2, the reed 3 and the starter rod or controlling rock shaft 4- are shown as in the Northrop type of automatic filling replenishing loom, it being assumed that the starter rod 4 is rocked counter-clockwise upon the initiation of filling replenishment. The temple shown is that one at the righthand side of the loom and is of a familiar type comprising a box-like stand 5 carried by the bracket 6 bolted to the loom beam 1 and a support 7 mounted to move forward and rearward in the stand 5 and yieldingly projected to its rearward position by a spring 8 surrounding the shank 9 of the support in the stand. At its forward end the support 7 terminates in the usual temple head 10 and is provided with a depending heel-ll extending in the path of the lay 2 so that upon each beat-up the temple support 7 has a slight forward bodily movement in the stand 5 against the action of the spring 8.

The filling cutting mechanism is shown as a fixed cutter blade 12 mounted in the temple head and a movable cutter member cooperating therewith and carrying at its forward end hook-shaped blades 13 so constructed that as these blades are moved downward and forward, the filling ends extending from the selvage in the field of action of the cut-- ting mechanism will be parted. This movable cutter member comprises a body 14 Oil mounted to rock and slide in a slot in the temple head and having a depending heel 15 extending in the path of the lay along beside the heel 11. A spring 16 engages at its lower end a stud 17 on the heel 15 and at its upper end a stud 18 on the support 7 and abuts at its extreme end 19a shoulder 20 on the support and acts to project the movable cutter blade to rearward open position.

A ratchet wheel 21 is rotatably mounted on a stud 22 projecting from the support 7. This ratchet wheel has secured thereto a radially projecting lug or detent 23 of such a size and shape that when the ratchet wheel is rotated into a position such as shown in Fig. 3, this detent will engage the spring 16, which is the means for positioning the parting mechanism operatively, and will move the movable cutter member to the position shown and hold it in this position, that is, in a position where the filling parting mechanism is inoperative and where the actuating means such as the lay cannot engage the depending heel 15. It will thus be seen that in this position, where the filling parting mechanism is inactive, the lay cannot effect even a slight movement of the movable cutter member and consequently there can be no movement of the filling parting mechanism and no wear thereon because, in the specific construction shown, the heel 15 is held locked forward of the heel 11 so that the lay upon the beat-up cannot engage the heel 15.

A usual type of plunger stop 2-l shown as a spring-pressed pin mounted in the temple head acts to position the ratchet wheel at each step of its rotation.

The ordinary step by step rotative movement of the ratchet wheel 2-1 is given by a pawl 25 pivotally mounted at 26 on the movable cutter member. Each time the lay beats up, engages the heel 15 and operates the movable cutter member by swinging it forward and downward against the tension of the spring 16, this pawl rotates the ratchet wheel one step.

In order to effect the disengagement of the detent 23 from the positioning spring 16 and permit the spring to move the parting mechanism to operative open position, and in order to place the ratchet wheel under the control of the pawl 25, it is necessary to give an initial step of rotation to the ratchet wheel. In order also to move the detent 23 to a posi tion such as shown in Fig. 3, where it will engage the spring 16 and force the depending heel 15 forward of the depending heel 11, it is necessary to give the final movement of the ratchet wheel and the detent into this position by other means than that, such as the lay, which engages the depending heel 15. These results are secured in the preferred form of the invention illustrated by a device such as the arm 27 mounted on the stand 5, with respect to which the support 7 has bodily movement, and a supplementary tooth 28 on the ratchet wheel. The tooth 28 stands at one side of the regular teeth of the ratchet wheel but its active face is in the plane of the active face of the adjacent regular tooth. The arm 27 is shown as a flat member having slots fitted over studs 29 and 30 projecting from the side of the stand 5. At its rearward end it is provised with two hooks 31 and 32 or shoulders in the plane of the supplementary tooth 28. A spring 33 is secured to the stand 5 at 3% and engages the arm 27 at 35 and normally acts to hold the arm downward so that the uppe 1 ends of the slots restupon the studs 29 and 30. In this position the rearward hook 32 lies in the rotary path .of the supplementary tooth 28 of the ratchet wheel as shown in Fig. 1. In this position the parting mechanism is operative and each time the lay beats up it engages the heel 15 operating the parting mechanism, giving one step of rotation to the ratchet wheel through the medium of the pawl 25 and at the con clusion of the beat-up also engaging the heel ll and moving the support 7 slightly forward. After a predetermined number of such eperations, depending upon the number of teeth in the ratchet wheel, have taken place, the next step of rotation will bring the detent 23 into position against the spring 16. As the beat-up now takes place. and the lay pushes the heel 15 into line with the heel 11, the detent 23 does not quite move to its holding position, but as the temple support pushed bodily forward by the lay engaging the heel 11, the hook 32 of the arm 7 rides over and drops behind the supplementary tooth 28. Consequently as the lay retracts and the support 7 moves rearward under the action of the spring 8, a final slight movement of rotation is given to the ratchet wheel by the hook 32 and the detent 23 is brought into engaging position holding the heel 15 forward of the heel 11. Thus it will be seen that a means is here provided which acts upon a predetermined number of beat-ups to withdraw the parter from engagement by the lay and lock it in withdrawn position so that there can be no movement of the parting mechanism or no contact of the lay therewith while it remains in this withdrawn position.

The means for releasing the detent from engagement with the positioning spring 16 or for releasing the parting means to operative posit-ion is here shown as comprising the same arm 27, the same supplementary tooth 28 on the ratchet wheel in cooperation with the other hook 31. assumed to be determined by the call for filling replenishment. For this purpose the starter or controlling rod 4 is provided with an upstanding arm 36 acting when the starter rod is rocked counterclockwise to engage the depending forward end 37 of the arm 27 and raise this end, thus depressing the hooked end The time of release is hereinto such a position that upon the next beat-- up, as the support 7 is moved bodily forward by the lay, the hook 31 will dro in front of the supplementary tooth 28. onsequently as the la retracts and the support 7 moves rearwar under the action of the spring 8, the hook 31 will give one step of rotation to the ratchet wheel, thus freeing the detent 23 from engagement with the spring 16 and releasing this positioning or projecting spring 16 so that the filling parting mechanism is brought to open operative position. The forward end of the arm 37 is frictionally engaged by a spring 38 mounted on the stud 29 so arranged and adjusted that the shock and jar will gradually allow the arm to be restored to the position shown in Fig. 1.

WVhen the detent 23 is released, the ratchet wheel again comes under the control of the pawl 25 and the parting means is operated a predetermined number of times, depending upon the number of teeth in the ratchet wheel and until, by the means already described, the detent 23 is again brought into position where it holds the parter withdrawn and locked in withdrawn position.

There is thus presented a very simple and effective means for securing the intermittent action of the filling parting means during desiredpredetermined periods and for insuring the parting means being so held when 1nactive as not to be subject to any operation nor to wear and tear resulting therefrom.

Havin thus described the invention, what is claimed as new, and desired to be secured by Letters Patent, is:

1. A loom temple provided with a filling parter, means to actuate said parter, means operatively to position the parter, a detent engageable with said positioning means to maintain the parter inoperative and unengageable by the actuating means, means to disengage the detent from said positlonmg means and governed by a plurality of successive operations of the parter and a following bodily movement of the temple to effect re-engagement of the positioning means and the detent.

2. In a loom having a breast beam and a lay, a stand mounted on the breast beam, a support mounted for forward and rearward movement in the stand, a spring acting to move the support rearward, a depending heel on the support acting when engaged by the lay on the beat-up to move the support forward, a filling parter movably mounted on the support and having a depending heel engaged by the lay on the beat-up to effect the parting operation, and means comprising cooperating elements on the stand and on the support acting by relative movement between the stand and support after a predetermined number of beat-ups to draw the heel of the parter forward of the heel of the support and lock it in withdrawn position so that it will not be engaged on succeeding beat-ups by the lay until released.

3. In a loom having a breast beam and a lay, a stand mounted on the breast beam, a support mounted for forward and rearward movement in the stand, a spring acting to move the support rearward, a depending heel on the support acting when engaged by the lay on the beat-up to move the support forward, a filling parter movably mounted on the support and having a depending heel engaged by the lay on the beat-up to effect the parting operation, means acting normally to project the parter rearward into operative position, a rotatable ratchet mounted on the support and having a detent to engage and maintain the projecting means inoperative, an actuating pawl for the ratchet acting upon successive forward movements of the parter to rotate the ratchet step by step, a device mounted on the stand and cooperating with the ratchet after a predetermined number of operations of the parter to move the detent into the position required to engage and maintain the projecting means inoperative and the heel of the parter forward of theheel of the support and thereafter cooperating with the ratchet wheel to efi'ect initial relative-movement of the ratchet to release the projecting means from the control of the detent.

4. In a loom having a breast beam and a lay, a stand mounted on the breast beam, a support mounted for forward and rearward movement in the stand, a spring acting to move the support rearward, a depending heel on the support acting when engaged -by the lay on the beat-up to move the support forward, a filling parter movably mounted on the support and having a depending heel engaged by the lay on the beat-up to effect the parting operation, a spring acting to project the parter into operative position, a ratchet rotatably mounted on the support and having an attached detent to engage the spring and lock the parter in inoperative position with the heel of the parter standing forward of the heel of the support, an actuating pawl for the ratchet to rotate the same step by step when the parter is operated by the lay, a lug on the ratchet, a hooked arm on the stand acting to engage the lug on the rearward movement of the support following a predetermined number of actuations of the parter and upon the following forward movement of the support to rotate theratchet and move the detent into position to engage the spring and lock the parter in inoperative position.

In testimony whereof, I have signed my name to this specification.

CLARE H. DRAPER.

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