US1614594A - Serving mechanism - Google Patents

Description

H. J. BOE S ERVING MECHANISM Jan. 18 1927. 1,614,594

Filed June 7 1923 2 Sheets-Sheet 1 [i2 venior v I 1,614,594 Jan. 18 1927. H. J BOE SERVING MECHANISM Filed June 7, 192a 2 Sheets-Sheet 2 1 55 5 J9 Inventor filmer J. B0

Patented Jan. 18, 1927.

UNITED STATES PATENT OFFICE.

HELMER JOHN BOE, OF CHICAGO, ILLINOIS, ASSIGNOR TO WESTERN ELECTRIC COM- IANY, INCORPORATED, or NEW YORK,

. Y., A CORPGEATIQN OF NEW YORK.

' SERVING MECHANISM,

Application filed June '7, 1923.

This invention relates to serving mechanism, but more particularly to mechanism for serving strand on a core.

The covering of a core by serving around it a strand of material is attended by the difi'iculty of keeping the tension necessary to serve the strand on the core below the limit of the tensile strength of the strand. In the case of paper strand being served upon a central core of wire by a machine running at high speed prevention of breakage of the strand becomes an important factor in the operation of the machine.

An object of the present invention is to reduce the tension on it while serving a strand upon a core.

Another object is to serve a tape from the center of a supply pad of tape.

A further object is to employ strand material having small tensile strength by main-- taining at a minimum the tension placed on the strand while being served on a core.

In order to attain these objects there is provided, in accordance with one embodiment of the invention, a disc mounted upon a sleeve around a spindle and carrying a pad of paper, the tension of the strand being drawn therefrom acting to regulate the rate of rotation of the disc and accompanying pad. speed and the disc is actuated thereby, through a friction clutch, but the method of regulating its rate of rotation by the tension on a strand will be explained later.

These and other features not specifically mentioned will appear from the. following description and the accompanying drawings.

Fig. 1 shows a side elevation of a serving mechanism D Fig. 2 is an enlarged vertical longitudinal section of part of Fig. 1;

Fig. 3 is a front elevation of the disc and the retaining plate for holding the pad in place, and also shows a smoothing d1e mounted upon a holder in a well known manner;

Fig. 4: is an enlarged front view of the central parts of the device; 1

Figs. 5 and 6 show in detail the method of fastening a retaining plate to the disc.

Referring to the drawings in detail, a frame 100 houses a motor (not shown) with a hollow shaft 101 keyed to a sleeve 27, which is integral with a plate 18. A pulley 33 has a driving connection'with sleeve 27,

carries guide members and 32. ,neled ring 26 1s also integral with plate 18 The sleeve rotates at a constant in Fig. 1.

Serial No. 643,933.

and a belt 16 drives a take-up mechanism (not shown) of any suitable type.

Pins 3 1 are set into recesses 25 in the pulley 33 and are forced outwardly by springs 10 against a ball thrust bearing 12. This bearing is loosely mounted upon a bushing 1 1 is also a strand supply holding member 20. A. flange 21 integral with this member and resting against the ball bearing 12 receives the thrust of the springs 10 through it. This action tends to force the member 20 against a clutch pad 23 which gives a friction driving connection between the two members while in this position. A bifurcatedpost 38 is integral with plate 18, an arm 43 being free to move longitudinally between the bifurcated arms .of this post, the pin 28 limiting its longitudinal movement therein. This member 43 is integral with tapered member and at its other end carries a guide member 31 which with other similar guide members mentioned herein may be either a polished pin or a roller. A post 17 is also integral'with plate 18 and A chanand has an opening radially opposite a guide member 86 which is directly connected to plate 18. A spring 89 is connected to the plate 18 by means of a screw 56 and is held in contact with the guide member 86 by a pin 57 which is also integral with plate 18.

As shown in Fig. 2 tapered member 35 may be screwed to hollow rod 15 which extends through the hollow shaft of the motor and emerges in the rear of the machine as shown The lower end of a lever 1-9 rests against the end of this rod and is provided with an opening so as not to interfere with the free passage of a core 14 therethrough, and this lever is connected by a pivot 46 to a support 51 which is integral with the motor housing 100. The short end of this lever is pivotally connected by a pin 12 to a rod 53-, the length of which'may be adjusted by a turnbuckle 5 1, the other end of the rod being pivotally connected by a pin 52 to lever 58. This lever is in turn con nected by a pivot 61 to a bracket which is integral with the motor housing 100.

The lower part of lever 58 is bifurcated outwardly by a coiled spring 74:.

the other side of which is in contact with the flange 21. A stud 83 is integral with lever 58 and carries a sleeve89 with a friction pad 77 thereon, which is forced A pin 40 integral with the stud and riding in a slot d1 in the sleeve limits the movement of the sleeve.

A plate 73 having radially extending project-ions for securing it to the member 20 is provided for holding a strand supply pad 37 in place during the operation of the apparatus. The lowest of these projections, between which the plate 73 is divided on a radius, lit into a pocket made by notching the member 20 and fastening a plate 24: over this notch by means of screws 82. Projections 87 at the sides of plate 73 fit into notches, out in the member '20, to receive them, and the method of connecting the plate at the top is shown in detail in Figs. 5 and 6.

A stud 90 is riveted to the plate 73 as shown and may be inserted through an opening 92 in member 20. A slide 9% is set in a depression 96 and is held therein by a plate 98 which is fastened to the member by screws 117. A handle 93 is integral with the slide 94: and a spring wire 95, supported between studs 97 and acting on the side of the handle tends to force the slide outward into a groove in the stud 90, thus securing it in place. hen the stud is not in place, the plate 98, acting as a stop for the handle, limits the outward movement of the slide 9%. The plate 78 is perforated as shown for the purpose of allowing the operator to 7 view the progress of the depletion of the strand supply, the semi-circular notches at the periphery showing definitely when the supply is about to become exhausted.

A die 48 in a holder 55 smooths the strand after it has been served with the strand.

The operation of the mechanism is as follows:

A pad or roll 37 of paper strand is placed against the face of member 20, the periphery of the pad fitting inside the ridge 22, and plate 73 is put in place by slipping the lower projections thereof into the pocket back of plate 24: and pressing the stud 90 into the opening 92 with suliicient force for the rounded head of the stud 90 to move back the slide 92 and allow it to snap back into the groove in the stud and thus lock it in place. An end of the strand is now drawn from the inside of the roll, through the opening in the channeled ring 26, between the-guide member 36, and spring 39, around the guide members 30, 31, and 32 in turn, out past the tapered member 35 and, after giving the paper a few turns around the coreto secure it, thereto, through the die 48 which smoothes the strand on the core. The spring 39 resting against guide member 36 holds the strand while the machine is at rest and prevents the unwinding of an excess amount of strand.

The motor is then started which revolves shaft 101 and with it the sleeve 27 carrying the core and this causes some of the strand to pileup on the channeled ring 26 as shown in Figs. 2, 3, and a. The piling up of the strand on this channeled ring increases the tensionnecessary to draw the strand therefrom and this in turn increases the tension on the strand around the guide members 31), 31, and 32, which draws the guide member 32, and with it the tapered member 35, rear ward. The arm of the member 43, riding in the slot in the post 38, is for the purpose of causing member 43 to rotate with the plate 18.

As the tapered member moves rearward it carries the rod 45 with it, and the other end of rod a5 moves the lower end of the lever 49 to the right. This moves the rod 53 to the left and causes the upper end of the lever 58 to move to the left also. The friction brake pad '77 is by this action pressed against the rear surface of the disc 20, while at the same time the lower forked end of the lever, pressing the collar rearward. exerts a pressure on flange 21 through the ball thrust bearing 12. which tends to carry the disc 20 to the right and out of contact with the friction pad 23, thereby removing the driving force therefrom. This combined drive release and braking action tends to retard the rotation of disc 20 so that it rotates more slowly than the channeled ring. Thus some of the paper on the channeled ring is unwound therefrom toward the pad itself. When the tension on the strand has decreased to a point where itis insufficient to retain the tapered member in its rearward position, the springs 10 force the disc once more into contact with the friction drive pad 23 which resumes the driving action, while the brake 77 is retracted at the same time from the rear surface of member 20.

This alternate driving and retarding action continues during the operation of the apparatus, balancing itself as it were to maintain proper tension on the strand at all times.

The tension on the strand with this device is very low and breakage thereof is practicall eliminated during operation.

VVhat is claimed is:

1. In a machine for serving a strand on a liIO core, means for holding a supply of strand, driving means therefor, means for serving the strand from the interior of the supply at a constant speed, and means controlled by the strand for regulating the amount of power communicated to the holding means.

2. In a machine for serving a strand on a core, means for holding a supply of strand, means for serving the strand from interior of the supply, means for driving the holding and serving means, and means controlled by the strand to regulate the amount of power communicated to the holding and serving means.

3. In a machine for serving a strand on a core, a rotatable member for holding a supply of strand, rotatable means to draw the strand from the interior of the supply and to serve it upon a core, and means controlled by the withdrawn strand for regulating the amount of power communicated to said rotatable supply member and the serving means.

4. In a machine for serving a tape, rotatable serving means, a rotatable supply pad holder, feeding means to draw the tape from the interior of the pad, means for actuating the holder and the feeding means, and means controlled by the tape for regulating the relative speed of the serving means and the supply pad holder.

5. In a machine for serving strand on a core, a rotatable strand supply holder, a rotatable spindle centrally mounted thereof and having a frictional driving connection therewith, driving means to actuate said spindle, and clutch releasing and braking means regulated by the tension on the strand to govern the relative speed of the spindle and the supply holder.

6. In a machine for serving a strand on a core, means for holding a supply of strand, means for servin the strand from the interior of the supp means for rotating the holding and serving means, means for storing surplus unserved strand withdrawn from the supply, and means controlled by the accumulation therein of a predetermined amount of strand for varying the speed of rotation of the holding means.

7. In a machine for serving a strand on a core, means for holding a supply of strand, means for serving the strand from the interior of the supply at a constant speed, means controlled by the serving means for driving the holding means, means for storing the unserved strand withdrawn from the supply, and means controlled by the storage of a predetermined amount of unserved strand to vary the effectiveness of the means for driving the holding means.

8. In a machine for serving a strand on a core, means for holding a supply of strand, means for serving the strand from the interior of the supply, means for rotating the holding and serving means, means for storing unserved strand withdrawn from the supply, and means controlled by the accumu lation therein of a predetermined amount of strand to unwind therefrom a portion of the stored strand. 1

9. In a machine for serving a strand on a core, means for holding a supply of strand, means for serving the strand from the supply, means for rotating the holding and serving means, means for storing surplus unserved strand withdrawn from the supply, and means controlled by the accumulation therein of a predetern'iined amount of strand for varying the relative speed ofthe holding and serving means.

10. Ina machine for serving a strand on a core, means for holding a supply of strand, means for serving the strand from the interior of the supply, means for rotating the holding and serving means, means for storing surplus unserved strand withdrawn from the supply, and means controlled by the accumulation therein of a predetermined amount of strand for varying the relative speed of the holding and serving means.

In witness whereof, I hereunto subscribe my hand this twenty-sixth day of May A. D.,1923.

HELMER JOHN 130E.

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