US913095A - Selvage-motion for looms. - Google Patents

Description

J. 'BELAVANGE. SELVAGE MOTION FOR LOOMS.

APPLICATION FILED MAR. 27, 1908.

913,095. Patented Feb. 23, 1909.

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JOSEPH BELAVANGE, OF WEBSTER,

MASSACHUSETTS, ASSIGNOR TO 'DRAPER COMPANY, OF

HOPEDALE, MASSACHUSETTS, A CORPORATION OF MAINE.

SELVAGE-MOTION FOR LOOMS.

Specification of Letters Patent.

Patented Feb. 23, 1 909.

Application filed March 27, 1908. Serial No. 228,511.

To all whom "it may concern:

Be it known that I, Josrrn BELAVANCE, a citizen of the United States, and resident of WVebster, county of lVorcester, State of Massachusetts, have invented an Improvement in Selvage-Motions for Looms, of whiclhthefollowing description, in connection with the accompanying drawing, is a specification, like numerals on the drawing representing like parts.

This invention has for its object the production of a simple selvage-motion for looms so constructed and arranged that either a plain or a tape selvage may be woven without necessitating a complete changeand setti of the actuating means.

15s is well known to those skilled in the art a plain selvage is woven by raising each I Selvageharness one pick and lowering it the following pick, while a tape or basket selvage is made by vage-harnesses the two up, two down movement.

My present invention is of the class wherein two selvage harnesses are located at each side of 'the loom, the selvage-motion being separate from the main shed-forming instrumentality, and as the selvage mechanism at one side of the loom is the same as that at the other side and has its own actuating means I have herein illustrated but one of such mechanismsand its actuating means.

The two selvage-harnesses of a pair are suitably connected to reciprocate oppositely, and the actuator for each air is so constructed that by bodily shiftlng it from one to another position, to act through a common transmitter, the selvage-harnesses are caused to weave plain or tape selvage.

The novel features of my invention will be fully described in the snbjoi'ned specification and particularly pointedout in the following claims.

Figure 1 is a transverse section of a portion of a loom showing at one side of the loom a selvage-forming mechanism embod ing my invention, set for weaving plain selvage; Fig. 2 is an enlarged 'detail view of one of the actuators and the transmitting member by means of which motion is imparted to the selvage-harnesses, showing the t pe fielyfl g'e portion ot the actuator;

giving to each of the sel-' Fig. 2, looking toward the left; Fig. t is a sectional detail on the line 4-4, Fig. 3, looking to the left, to show more clearly the tape salvage operating portion of the actuator.

The arch l of the loominay support in usual manner the main harnessframes (not shown) and the shaft 2 may be the usual cam-shaft of the loom, the arch at each side of the loom sustaining a suitable bracket 3 on which is mounted a rotatable sheave 4, Fig. l, for the overhead connection 5 between the two harnesses 6, 7 forming a art of the selvage mechanism at that-side o the loom.

I have herein shown a stra or other flexible member 8 connected wit the lower end of the harness 7 and carried down around a guide wheel 9 on the loom side and thence up to a rocking lever 10 fulcrumed at 11, a strap 12 connecting the bottom of the front harness 6 and the lever, as shown in Fig. 1, the connection being practically the same as that shown in United States Patent No. 729,046, granted to Draper May 26, 1903.

Oscillation of the lever will operate through-the connections to effect the required" opposite reciprocation of two harnesses 6 and 7, as will be obvious.

Upon a bracket 13 is rotatably mounted a transmitter, shown as a ,lnutilated gear 14-,

having diametrically opposite sets of teeth, and a starting tooth l5 midway between each set, with opposite concaved locking extensions to, adjacent the starting teeth, as clearly shown in Fig. 2.

A wrist-pin 17 on the gear has pivoted on it one end of a link18 which at its other end is pivoted at 19 to the lever 10, see Fig. 1, to oscillate the latter as the transmitter i l is rotated.

The mutilated gear or transmitter is mounted below and adjacent the cam-shaft L, and cooperates with the actuator, the lat.- ter imparting intermitting rotary movement to the transmitter.

Herein l have shown the actuator as a disk 20 having on its periphery-adjacent one face two dian'ietrically opposite series of teeth 21, the end teeth 22 of each set being ig. 3 l made thicker to cooperate with the starting [S a front elevation .of the parts shown in I teeth 15,1116 adjacent the opposite face of the disk 20 a single series of teeth 23 'is formed, opposite one of the series 21. The hub 2st of the actuator is secured to the shaft 2 by a suitable set-screw 25.

Referring to Fig. 3 it will be seen that the teeth are set back somewhat from the face of the disk, while the two series 21 are flush with the other face, but with a clearance between the series 2?) and the nearer one of the in series 21.

When the actuator is positioned as shown in Figs. 1, 2 and 3, the two series of teeth 21 will intern'iittingly cooperate with the transmitter l t, imparting thereto one complete revolution for each revolution of the shaft 2, but owing to the arrangement of the teeth the transmitter will be given one half a revolution, followed by a dwell, and then the other half of the revolution will be effected.

At the beginning of each dwell period one of the locking extensions 16 is moved into the position shown in Fig. l to coiiperate with the circular portion of the disk 20 back of the teeth 21, to thereby lock the transmitter from movement and effect the dwell of the harnesses.

it will be obvious from the foregoing de- -scription that the intermittent motion imparted to the transmitter will oscillate the lever 10 to give the one up, one down movement to the selvage harnesses 6 and 7, to thereby Weave the plain selvage, a similar movement being given to the harnesses of the sewage-mechanism at. the opposite side of the loom by its actuator but in reverse order, so far as concerns its harnesses.

When. tape or basket. selvage is to be woven the actuator is shifted to the left, Fig. 3, on the shaft 2, to bring the single series of teeth as 23 into position to cooperate with the transmitter 14., and by so doing each revolution of the shaft 2 will impart but one-half of a revolution to the transmitter, so that the sewage-harnesses will have imparted to them at) the required two up, two down-motion. Af-

ter the teeth 23 have left the teeth of the transmitter one of the locking extensions 16 is brought into operative position with relation to the disk 20, the setting back of the teeth 23 from the face of the disk 20 permitting the locking extensions to move into and out of operative position. Thus by a slight shift of the actuator longitudinally on its shaft I am enabled to operate the selvagemecl'ianism to weave plain or tape selvage as desired, thechange being effected by loosening the set-screw 25, shiftmg theactuator longitudinally on the shaft 2, and thentightening the set-screw.

So far as Iain aware it is new to utilize actuating means such as rein shown in a selvage-motion, and to coz ,-ine two different forms of connected mutilated gears with a third gear common to both, 2'. 6., the transmitter, whereby two entirely .ditferentoperations are performed by apparatus connccted with tl'iet-ransmitter.

Having fully described my invention, what I claim as new and desire to secure by Let ters Patent is 2- I 1. In a loom, a shed-forming mechanism for each selvage, combined with a rotating actuator for each mechanism, said actuator having means thereon to effect the formation of a shed for weaving either plain or tape selvage, an intermittingly rotated transmitter interftied iate an actuator and its shedforming mechanism, toefi'ect the operation of the latter according to which means upon the actuator is in cooperation with and rotates the transmitter, relative lateral move ment of the latter and the actuator rendering operative one or the other of the means tiereon, and means to positively lock the transmitter between its intermittent rotative movements.

2. In a loom, a shed-forming mechanism for each selvage, combined with an actuator for each mechanism, each actuator having permanently thereon two sets of ears to effect, respectively, the formation of a shed for weaving plain and tape selvage, a rotatable shaft on which the actuator is mounted to rotate with itand on which it can be shifted longitudinally to brin one set of gears into operative position and render inoperative the other set, and a transmitter intermediate an actuator and its shed 1 forming mechanism and rotated by that set of gears on the actuator which is operatively positioned by shifting of the actuator.

I In a loom, separate shed-forming mechanism for each selvage, an actuator for each,- each actuator having two opposite series of teeth, and a single series offset laterally therefrom, a mutilated transmitting gear adapted to cooperate with either the single or. the double series of teeth on the actuator, to weave tape or plain selvage respectively, and a connection between the transmitting gear and the adjacent shed forming mechanism.

4. In a loom, a cam-shaft, an actuator longitudinally shiftable thereon and having fixed upon it two sets of gearing to effect the formation of a' shed for weaving eitherplain or tape selvage, a transmitter rotated intermittingly once for each revolution, or for each two revolutit is, of the shaft according to'which of the two sets of gearing on the actuator is brought into 006 eration with the transmitter, to thereby e ect the shed formation for plain or tape selvage, respectively, and a pairof selvage-harnesses actuated by the transmitt 5. In a loom, a rotatable shaft, an actuator longitudinally shiftable thereon and having means thereon to effect the formation of a shed for weaving either plain or tape selvage, a transmitter to cooperate with and be intermittingl iretated by one or the other of said In testimony whereof, I have signed my means,' ockmg' means connected with 'the name to this specification, in the presence transnutter to coiiperitte with the actuator of two subscrlblng witnesses.

\ and positively lock the transmitter between JOSEPH BELAVANCE. ,5 ltS-ITQtfltiVB movements, and a selvage shed- 1 Witnesses:

fermmg mechanism operatively connected TELEsPHonE LEBOEUF,

vi'ith the transmitter; J. (J. ZEPHERTOTVIN.

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