US1508934A - Bunch builder for bobbins - Google Patents

Description

Sept. 16, 1924. 1,508.934'

W. N. HEATH BUNCH BUILDER FOR BOBBINS Filed Sept. 4. 1923 4 Sheets-Sheet 1 Z nveni o 7'.

Sept. 16, 1924. 1,5@.%@

w. N. HEATH BUNCH BUILDER FOR BOBBINS Filed Sept. 1923 4 Sheets-Sheet. 2

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w. N. HEATH BUNCH BUILDER FOR BOBBINS Filed Sept. 4, 1923 4 Shets-Sheet 3 $3 N m m M l\ ing;

Sept. 16 1924. 1,5@&%%

w. N. HEATH BUNCH BUILDER FOR BOBBINS Filed Sept. 1923 4 Sheets-Sheet m i Ma gnvenfoz Vl i/fiam Norman Heaffi Patented Sept. 16, 1924.

UNITED STATES WILLIAM NORMAN HEATH, 0F WACO. TEXAS.

BUNCH BUILDER FOR BOBBINS.

Application filed September 4, 1923.

To all whom it may concern:

Be it known that 1, WILLIAM N. HEATH, a citizen of the United States, residing at Waco, in the county of McLennan and State of Texas, have invented a new and useful Mechanical Device Known as the Bunch Builder for Bobbins, of which the following is a specification.

My invention relates to bunch builders for the bobbins of spinning machines which make use of a ring or similar frame operated by a traverse motion device to con trol the winding of the bobbins. Spinning machines having a main traverse motion device adapted to lay the main windings on the bobbins and secondary traverse motion device or bunch builder are well known; but my bunch builder is an improvement on existing machines in that the construction employed is particularly simple and rugged.

The bunch, or relatively small number of turns of yarn or thread wound on the bobbin before beginning the main winding, serves to start the main winding and serves later, when the yarn wound on the bobbin is used in a loom or cloth weaving machine, to operate the control mechanism of the weaving machine so as to prevent running off all of the yarn from the bobbin and thus prevent the making of defects in the woven cloth.

The specific advantages of my device are: that by causing a small pile or bunch of yarn of the correct size and shape to be built upon the empty bobbin at the lowest point of the traverse of the laying mechanism of the spinning machine, the bobbin transfer motion on an automatic loom, which depends on the bunch for its action, is more positive and dependable in action and causes less stoppage of the loom, thus increasing production; and, that by controlling the shape of the bunch, much less yarn is required to operate the transfer mechanism of the loom, thus decreasing the amount of yarn going to waste, since all of the yarn which happens to be left on the bobbin at the time of transfer on the loom goes into waste.

My bunch builder has a further advantage in that bunching operation takes place while the dof'fers are piecing up the broken down ends of yarn, and keeps the ring rail down until the piecing up is finished so that all the yarn wound upon the bobbins by the doffers in piecing up is kept on the lowest portions of the bobbins.

Serial No. 660,898.

Theessential object of my invention is to provide a simple and rugged device which will be positive in. operation and will have the advantages and accomplish the purposes set forth above. A further object is to provide a construction which will be adapted to be substituted in existing spinning machines for other bunch building devices which do not have the advantages of my device. Another object is to provide an automatic release for the bunch builder.

With these objects and other objects hereinafter set forth in view, my invention consists in the construction and combination of parts hereinafter described and claimed.

Referring to the drawings Figure 1 is a side elevation of a part of a spinning machine and shows the control mechanism of my bunch builder,

Figure 2 is a front View of a builder arm with the cams and cam followers which operate through a chain or cable the traverse motion of the ring frame for laying yarn on the bobbins,

Figure 3 is an end View of the cams and cam followers with a partial section taken across the builder arm and shaft along the line 33 of Figure 2,

Figure 4 is a front view of a six point bunch builder cam interchangeable with the smaller or bunch builder cam shown in Figures 2 and 3,

Figure 5 is an end view of the same,

Figure 6 is a side view of the camshaft and main cam driving arm,

Figure 7 is an end view of the same,

Figure 8 is a front view of the cam shifter block,

Figure 9 is an end View of the same,

And Figure 10 is a partial side elevation of a spinning machine and shows the connection of the builder arm with the ring frame. For clearness, the locking mechanism shown in Figure l is omitted in this View.

In the drawings, 1 indicates one of the vertical supports of a spinning machine which stands upon the floor, 2 represents a horizontal member of the machine frame, 3 is the operating rod which works up and down in the bearing 4 to give to the ring frame 52 (Fig. 10) its traverse motion. As shown, the ring frame 52 has the rings 53 which surround the bobbin spindles 51 mounted on the frame member 50. The operating rod 3 is given its motion through the follower 5 by the bell crank lever 6 which is pivoted on the pin 49 supported by the frame member 48. The vertical arm of the bell crank lever 6 has a segmental portion 47 to which a chain 45 is attached. The bell crank lever 6 is under constant tension by usual means (not shown) which tends to pull the chain 45 to the left and also tends to raise the operating rod 3. Chain 45 passes over the pulley 46 and is attached to the builder arm 31. The cam 27 acts to force the builder arm 31 down against the tension on the chain 45 and thereby lower the ring frame 52 periodically to give it a traverse motion.

Referring to Figures 1 and 2, 21 is the shaft on which are mounted the shifter fingers 24 and 25, which move the bunch builder cam 26 into engagement with its follower 29. This shaft 21 is supported near one end by the hanger 44 mounted on the frame 2. A return stop 19 is fastened by a set screw 20 on the shaft 21 and acts against the frame 2 so as to prevent the shaft 21 from turning back too far. A shifter lever 17 is also fastened by a set screw to the shaft 21. This shifter lever 17 has a slot 16 in its lower part. A latch arm 12 carries a stud or bolt 15 near its upper end and this bolt 15 is slidably disposed in the slot 16, thus serving to operatively connect the shifter lever 17 and the latch arm 12. The latch arm 12 has a slot 14 having a locking shoulder 13, this slot and shoulder being adapted to act on the stud 10 which is mounted on the support 11 fastened to the frame 1. )Vhen the primary or main traverse motion device is in operation, the bunch builder, or secondary traverse motion device, is not in operation and the control parts described in this paragraph are in the positions shown in full lines in Figure 1. The dash and dot lines in Figure lshow the positions of the control parts when the bunch builder is in operation and the primary traverse motion is prevented from operating.

\Vhen the control parts are in the positions shown in dash and dot lines, the shaft .21 is turned counter clockwise a few degrees and, by means of the shifter fingers 24 and 25 (Figure 2), the bunch builder cam 26 is shifted into operation. The shaft 21 is locked in its turned position by the shoulder 13 (Figure 1) of the latch arm 12 acting against the stud 10. Thus the secondary traverse motion device, or bunch builder, operates as long as the shoulder 13 locks the mechanism by acting against the stud 10. The automatic release of the bunch builder is accomplished by providing a stud or pin 9 projecting from the ratchet wheel 7 of the pick mechanism near its periphery, this pin 9 being adapted to strike the latch arm 12 to release the shoulder 13 from its locked position over the stud 10, thus releasing the bunch builder and permitting the primary traverse motion to operate. The ratchet wheel 7 turns the shaft 8; both the ratchet wheel 7 and the shaft 8 are parts of the primary traverse .motion device, the ratchet wheel being turned by a pick mechanism as the builder arm moves up and down, said ratchet wheel and pick mechanism being of any type commonly used in the art.

Regulation of my bunch builder so as to determine the size of the bunches built on the bobbins is accomplished by adjustment ofthe ratchet wheel 7 so that the angle through which the ratchet wheel must rotate before the pin 9 strikes the latch arm 12 is predetermined.

As shown in Figures 2 and 3, the primary traverse motion is operated by the primary cam 27 driven by the camshaft 38 and acting against the cam follower 30 mounted on the builder arm 31 which is pivotally mounted at 32 to a fixed part of the frame. The builder arm 31 is, of course, operatively, connected to the ring frame for laying the yarn on the bobbins.

My bunch builder cam or secondary cam 26 is also mounted on the camshaft 38, and, when in the operating position, acts against the cam follower 29 which is alsomounted on the builder arm 31 and thus operates the traverse motion device in the place of the primary cam 27. The cam 26 is keyed to and slidably mounted on the camshaft 38 and is normally (that is, when the primary traverse motion is in operation) held in the position shown in Figure 3 by the pressure of the spring 45. In this position, the cam 26 does not act against its follower 29 and the primary cam 27 is allowed to act against its follower 30 to operate the primary traverse motion. But when the control parts are moved to the positions shown in dash and dot lines (Figure 1), the shaft 21 is turned so as to move the shifter fingers 24 and 25 (Figures 2 and 3) thereby sliding cam 26 toward cam 27, thus bringing cam 26 into operation against its follower 29 and setting up the bunch building traverse motion.

As shown in Figures 2 and 3, the shifter fingers 24 and 25 are fastened to the shaft 21 by set screws, and the shaft 21 turns in a shifter block 22 which is mounted on but does not turn with the camshaft 38, the shifter block 22 being held in place by the screw head 23.

In Figures 4 and 5 is shown a six point cam 26 which is interchangeable with cam 26. The difference between cams 26 and 26 is essentially the number of points. Each cam has a hub 42 adapted to fit over the camshaft 38 and has a keyway 41. The face of the cam may be depressed as shown at 43 in order to make the construction light in weight.

The camshaft I employ is shown in Figures 6 and 7, this camshaft being but slightly different from and interchangeable with the camshaft now in use in some machines. The camshaft 38 has an arm 39 rigidly mounted thereon, the arm 39 serving through the stud 28 to drive the primary cam 27. In the shaft 38 is a long keyway 40, a long key (not shown) fitting between keyways 40 and 41. The camshaft 38 is turned down somewhat at 34 to fit into the bearing 35 in the shifter block 22 and a screw threaded hole 33 is provided for the screw 23. The camshaft 38 is also turned down at 41 to provide for the mounting of the pulley or other driving means not shown.

The shifter block 22 is shown in detail in Figures 8 and 9. The bearing 35 fits over the portion 34 of the camshaft 38 as said, and the bearing 36 serves to hold the shaft 21. An oil hole 37 is provided in the shifter block.

It will be seen from this description and drawings, that my bunch builder is of simple and strong construction and is adapted to be fitted to machines now'in use with a minimum number of changes and new working parts.

In the use of a spinning machine having my bunch builder attached thereto, the bunch builder remains idle until the bobbins are full and have been dofied. Before starting the machine, the dofler raises the shifter lever up until the shoulder 13 catches over the stud 10, which operation brings the bunch builder cam into operation. After starting the machine, the bunch builder will then operate to run its predetermined number of layers of yarn upon the bobbins and afterwards automatically release itself with out further attention upon the part of the machine operator.

Having thus described my invention, what I claim is 7 1. In a machine of the character described having a traverse motion operated by a primary cam fixed on a driven shaft and a builder arm carrying a primary cam follower, in combination, a secondary cam follower secured to the builder arm, a secondary bunch builder cam slidably disposed on the driven shaft and adapted to be removed and replaced without disturbing the primary traverse motion mechanism, and means for moving the secondary cam into and out of engagement with its follower.

2. In a machine of the character described having a traverse motion operated by a primary cam fixed on a driven shaft and a builder arm carrying a primary cam follower, in combination, a secondary cam follower secured to the builder arm, a secondary bunch builder cam slidably disposed on the driven shaft and adapted to be removed and replaced without disturbing the primary traverse motion mechanism, and means supported on the end of the driven shaft for moving the secondary cam into and out of engagement with its follower.

3. In a machine of the character described having a traverse motion operated by aprimary eam fixed on a driven shaft and a builder arm carrying a primary cam follower, in combination, a secondary cam follower secured to the builder arm, a secondary bunch builder cam slidably disposed on the driven shaft and adapted to be removed and replaced without disturbing the primary traverse motion mechanism, a

spring for moving the secondary cam out of engagement with its follower, a shifting mechanism for moving the secondary cam into engagement with its follower, and looking means for the shifting mechanism.

4. In a machine of the character described having a traverse motion operated by a primary cam fixed on a-driven shaft and a builder arm carrying a primary cam follower and a pick wheel, in combination, a secondary cam follower secured to the builder arm, a secondary bunch builder cam slidably disposed on the driven shaft and adapted to be removed and replaced without disturbing the primary traverse motion mechanism, a spring for moving the sec ondary cam out of engagement with its follower, a shifting mechanism for moving the secondary cam into engagement with its follower, and locking means for the shifting mechanism arranged to be automatically released by a stud secured to the pick wheel near its periphery.

WILLIAM NORMAN HEATH.

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