US1662308A - Dabber for combers of the heilmann type - Google Patents

Description

March 13, 1928.

c. GEGAUFF DABBER- FOR COMBERS OF THE HEILMANN TYPE Filed Sept. 59. 1926 2 Sheets-Sheet 1 March 13, 1928. 1,662,308

C. GEGAUFF DABBER FOR COMBERS OF THE HEILMANN TYPE Filed Sept. 50. 1926 2 Shets-Sheet 2 Patented Mar. 13, 1928. p

- PATENT oFFicE.

* UNITED STATES CHARLES GEGAUEF, OF MULHCU SE, FRANCE, ASSIGNOR T0 SOGIETE ALSAGIENNE DE CONSTRUGTIONS MECANIQUES, 0F MULHOUSE, FRANCE.

DABBER FOR COMBERS OF HEILMANN TYPE.

Application filed September 30, 1926, Serial No. 138,753, and in France October 2, 1925.

This invention relates to improvements in dabbers for combers of the Heilmann type, one object of the invention being to provide improved means for retaining the dabbing blade in the position of rest subsequent to a dabbing movement during an active revolution of the combing cylinder, another object being to provide improved means for actuating the dabbing blade and imparting thereto the required movements for its operation. V s

With the above and other objects in view, the invention consists in the construction, combination and arrangement of devices hereinafter described and claimed.

In the accompanying drawings Figurel is a diagrammatic sectionalview of a comber of the Heilmanntype provided with my improved means for retaining the dabbing blade in the position ofrest subsequent to a dabbing movement during an active revolution of, the combing cylinder.

Figure 2 is a detail sectional view of'a comber of the Heilmann type provided with my improved means for operating the dabbinv blade. I a

igure 3 is a detail diagrammatic front elevation of the same partly in section.

The combing cylinder is indicated at A, its axle shaft a being mounted in suitable hearings in airame n. The rows or bars of needles are indicated at b, b, b and b. Thedabber bar or blade is indicated at D, its front edge being indica-ted'at d and its rear edge at e. The combing cylinder rotates in the direction indicated'by the arrow and the dabber blade, duringcombing and at the exact instant of passage of the two rows of needles 6 and 6 under the end of the upper nipper jaw or member 2 enters suddenly between said bars I) and b to energetically dab the lap at this point into the needles. The lap is then held by the nip- )ers. 1 V 1 As in the dabbing operation the bars of the comb have a high circumferential. velocitywhich is that of the comb. It is necessary that the blade 6, (1, immediately it falls in to the space between I) and 6 should assume instantaneonslythe high circumferential velocity of these bars and travel with them through a distance of about two centimeters while moving progressively beyond the effective radius of the points of the needles, there being no need .for the dabbing action to continue for more than a few millimeters of the travel of the bars. Once clear of the comb the dabber moves more slowly and finally stops at the terminal point cl where it is beyond the path of the needles, of the comb. It remains stationary in this position until it againmovesinto action. on the successive evolution of the comb, that is to say, subsequent to the succeeding detacl1- ing' operation. The detaching operation is generally effected by a pair of fluted rollers r, '2?" having an interposed endless leather belt 8 but it may also be effected in any other mannerv without departure from the present invention. There is-shown in Fig ure 1 the form of the path (Z, d, d traversed in space by the end 0? of the dabber. The inoperative position of the dabber occupied throughout the detaching operation and of the travel of the nippers p, 0 between the detaching and the combing positions is shown in dotted lines.

There are two systems of circularcombing in combs of the Heilmann type according to the material worked, wool, flock silk, cotton, etc. The first system isthat which has been described above and which is the most usual. The circular combmakesonly one revolu tion per evolutionof the machinep In the other system the comb makes two or three revolutions per evolution. of the machine whileturning continuously, butoneonly of these revolutions is employed for the combing operation while the two others are only inoperative revolutions, that is to say, with out combing. This device has for its object to obtain a much higher circumferential speed ofthe comb and in consequence to be able, during the short interval when the nippers present the lap or the like to the comb, to cause the latter to traverse it for a. greater are of the circumference of the comb, that is, to give a larger number of strokes of the bar to increase the degree of straightening of the combed material.

In this second system it is necessary to employ means to preventv the dabber from working, that is, from travelling overthe path d, (2? during the inoperative revolutions which the comb makes because. there would be produced rapid and useless wear of the mechanism ofthe dabber, which is only requiredto operate during the rotation of" the comb employed for combing the lap. In order to'put the dabber outof operation during these inoperative revolutions the lower jaw 0 of the nippers is in accordance with my invention provided on each side with a finger t. The latter, when the nippers occupy the position during detachment indicated in dotted lines o. 1- in Figure l. occupies the position I", thus closing the path tor the dabber D. The latter is thus held detained during the tree revolutions of the comb which the latter makes during the combing period.

Other suitable means may within the scope of my invention be provided for thus detaining the dabber blade.

I will now describe my improved means for operating the dabber bar and which improved mean is illustrated in detail in Figures 9. and 3 ot the drawing. The dal'iber blade D is carried by a pair of rocking arms F and is secured pivotall at each end as at fto the upper end of one of said arms. The pivots f pass through depending lugs f with which the dabber blade is provided, each of said lugs having an arm 7". Each arm F has a stop lug Z: to bear under the tree. dabbing portion of the dabber blade to limit its movement toward the center of the combing cylinder as shown in Figure 2, springs J being provided to move the dabber bar in such direction, each of said springs being connected at one end as at i to the arm f and at the other end to the arm F as at y.

The arms F have fixed pivots It at a point spaced from their inner ends and on which they rock, said pivots being secured to the trame 72.. Each of the said arms is also provided at a point spaced from its pivot h with a tappet roller (it which is, mounted for rotation on a stud 7 with which the arm is provided. Springs 14 are connected to the inner ends of the arm f to move the latter in a direction substantially reverse to that of the rotation of the combing cylinder and in connection with the means hereinafter de scribed impart dabbing movement to said dabber blade.

The combing cylinder is provided on each side of the bars of needles with a sector 0. the periphery of which is indicated at c and each sector has a peripheral notch 0 arranged between the bars 7). 7) and of appropriate. shape and depth to receive the free edge rl of the dabber and permit dubbing movement: thereof.

The shaft 0 of the combing cylinder is provided at points near the ends of said c vl inder with cams M. Each cam is of the shape shown in Figure 2. provided with a semi circular portion which provides a pcripheral surface in". m concentric with the shaft. Each cam also has a reentrant portion m which extends from the point m and merges into a substantially quarter-circular portion m which connects said reentrant portion with the concentric peripheral portion of the cam. The springs u are active to turn the arms F on their pivot h to impart dabbing stroke to said arms and the dabher blade carried thereby and keep the roller 1 always in contact with the peripheries of the cams. During such dabhing movement and while the dabher isapproaching the notches (F. the pivot fol" the dabber moves in an arc ot a circle indicated by the dotted line lk/7 .11 in liigure 2 whi h are at the point 1/ intersects the arc represcntedbv the periphery of the sector mowing to the eccentricity of the pivot axis A. of the arms F with respect to the axis of rotation (L of the combing cylinder. Such movement of the arms F is permitted by the cam surfaces 112.. m" as will be understood. 'hen the tree edge (Z of the dabber blade reaches the notches c it is forced into such notches, between the bars of needles I), b by the action of the springs The free end or edge (I of the dahher will not be liable in the course of its travel to contact with the points of the needles of the comb because it will be pressed on each side of the comb against the sectors 0, c which maintain it raised, that is, the end (i will no longer rest; on its usual seating R but on the outer periphery of the two sectors c of the comb. Figure 2 thus represents at about one-third of the travel the position (i of the end of the dabber and also at d the final position of the travel, the fall of the end (I having just taken place.

lVhen the recess 0 has been thus engaged by the end (I of the dabber the latter will participate in the movement'ot the cylinder and sectors and the part m, m of the eccentric will actuate only momentarily the arms F through their rollers g and will only again take action after the dabher (l entrained by the recess 0" shall have moved over a certain distance (about 15 millimeters). From this moment the part m, m of the eccentric will actuate the dabber and take it to its final position of rest at e, (Z. represented in full lines in Figure 2 and during this period the seating l". of the dabher will support. the end ll of the dabber and maintain it clear of the points of the needles. The dabber will thus remain as already explained above in this position of rest until it again moves into action, that is to say. until the succeding combing period.

My improved means for operating the dahher is much simpler in construction and provides for a much higher speed than that heretofore in use and is etl ective with precision to perform the dabbing operation.

Having thus described my invention, I claim:

1. In dahhing mechanisn'i. in combination with a combing cylinder. a dabbing blade. and nipper elements, means on one of said nipper elements to retain the said blade in the position of rest, subsequent to a dabbin movement, during an active revolution 0 the said cylinder and during the suceeding inactive revolution of said cylinder.

2. In dabbing mechanism, a combing cylinder having a needle bar sector provided with a peripheral notch, a rocking armhaving a pivotal axis eccentric to the axis of rotation of the cylinder, a dabber blade carried by said arm in an are which intersects the are represented by the periphery of the sector, and mounted for pivotal movement with respect to said arm, means to actuate said rocking arm and means to engage said dabber blade with said notch.

3. In dabbing mechanism, a. combing cylinder havin a needle bar sector provided with a perip eral notch, a rocking arm having a pivotal axis eccentric to the axis of rotation of the cylinder, a spring active to move said arm'in one direction to impart dahbing n'ioveinent thereto, and a cam active to momentarily hold said arm in initial position and topermitsuch movement of such arm by said spring, a dabber blade carried by and pivotally mounted on saidarm and a: spring active to cause said blade to engage its free end into such notch of said sector when such notch is reached thereby.

In witness whereof I affix my signatures CHARLES GEGAUFF.

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