US2583568A - Yarn furnishing mechanism - Google Patents

Description

Jan. 29, 1952 E. .1v HEIZER YARN FURNISHING MECHANISM Filed Sept. 6, 1945 Junentor E g/ M (11% attorney Patented Jan. 29, 1952 UNITED STATES PATENT OFFICE YARN FURNISHING MECHANISM Edward J. Heller, West Caldwell, N. J., assignor to Specialties Development Corporation, Belleville, N. J., a corporation oi New Jersey Application September 6, 1946, Serial No. 695,116

- the like, and relates more particularly to improvements in yarn furnishing mechanisms of the type wherein the yarn is positively fed between a pair of feed rolls or cones.

A furnishing mechanism of the foregoing type which is used extensively comprises a pair of conical rolls one of which is driven by a source of power and the other of which idles in contact with the driven roll. It has been found desirable to provide one of the rolls with a hard surface such as metal and to provide the other roll with a softer surface in the form of a leather covering or the like. Usually, the power driven roll has the hard surface and the idling roll has the softer surface. The yarn is impinged between these rolls and is positively fed upon rotation of the rolls.

A difllculty encountered with such furnishing rolls is that when the mechanism is stopped, for example, between the end of the day and the beginning of the next working day, the yarn impinged between the rolls is pressed into the soft surface of one of the rolls. In cases where the yarn being fed is of the synthetic type having considerable hardness, the yarn forms deep impressions or cuts in the soft facing of the roll. Upon starting the mechanism, these impressions are aggravated and develop into nicks, substantial cuts or other irregularities giving the soft facing an uneven surface which during operation of the mechanism produces harmful vibrations in the yarn and subjects the yarn to abrasive action. This is very undesirable because such vibration results in breakage of the yarn and fluctuations in tension to produce a package wound under uneven tension. Abrasive action damages the surface of the yarn and results in the weakening thereof and the marring of the appearance of the yarn.

Another difliculty is that the hard roll sinks into the soft facing and produces flats or impressions giving the soft facing an uneven surface. Such a surface produces vibrations in the yarn and subjects the roll hearings to strains due to uneven traction between the rolls.

The present invention aims to overcome the foregoing dimculties by arranging one of the rolls in a manner which enables it to be readily 3 Claims. (Cl. 28-715) moved and held out of engagement with the other roll while the mechanism is idle, whereby the yarn or the hard roll will not form impressions or the like in the roll having the soft facing.

2 Accordingly, an object of the present invention is to provide a furnishing mechanism wherein the rolls are readily separated when not in use.

Another object is to provide means for effecting separation and return of the rolls in a simple manner without the use of tools.

Another object is to provide means for positively retaining the rolls out of engagement.

A further object is to provide means for accomplishing the foregoing which are simple and compact in arrangement and are inexpensive to manufacture.

Other and further objects of the invention will be obvious ,upon an understanding of the illustrative embodiment about to be described, or will be indicated in the appended claims, and various advantages not referred to herein will ocour to one skilled in the art upon employment of the invention in practice.

A preferred embodiment of the invention has been chosen for purposes of illustration and description, and is shown in the accompanying drawing, forming a' part of the specification, wherein:

Figure 1 is a side elevational view of a furnishing mechanism embodying the present invention and illustrating the feed rolls in one position of adjustment.

Figure 2 is a side elevational view of a portion of the mechanism shown in Figure 1 illustrating the feed rolls in another position of adjustment.

Figure 3 is a top plan view of the mechanism with certain parts broken away for clearness.

Referring to the drawing in detail, there is shown a furnishing mechanism of the type used in connection with yarn or thread package winding machines. The mechanism comprises a bracket Ill for mounting the mechanism on a winding machine, for example, a feed roll ll journalled for rotation on the bracket and driven by a suitable source of power (not shown) through a shaft I 2, and a second feed roll it pivotally supported on the bracket as about to be described and adapted to be rotated by the roll II.

The feed rolls II and H are herein illustrated as cones which enable the thread passing therebetween to be moved towards or away from the centers'of rotation of the cones to increase or decrease the rate of feeding in response to the thread demand by a tension regulating device generally indicated by the reference "numeral It. The present invention is not concerned with the tension regulating device and hence the tension regulating device need not be illustrated or described herein. However, such a device is shown cember 28, 1944, now Patent No. 2,466,600.

The power driven cone H as previously mentioned has a hard metal surface I while the idling cone M has a relatively softer surface l5 provided by a leather cover or facing.

The mounting means for the cone It comprises an arm pivoted at one end on a screw or stud 2| secured to the bracket and having a depending portion 22 at its other end, and a bearing housing 23 wherein the cone I4 is journalled for rotation. The bearing housing is connected to the portion 22 of the arm by a pin 24 extending through an aperture adjacent the end of the arm and apertures formed in a pair of ears 25 on the housing.

The arm 20 normally is urged in a direction to place the cone M in contact with the cone l i as shown in Figure 1. This is accomplished by a plunger 26 mounted on a support 21 secured to the bracket and a cylindrical helical spring 29 surrounding the plunger and positioned between the head of the plunger and the support. The plunger engages the underside of the arm outwardly of the stud 2| about which the arm pivots whereby the plunger turns the arm in a counterclockwise direction.

In order to separate the cones when the device is idle, a lever 30 is provided which is pivotally mounted at one end on a stud 28 extending through a clearance hole 33 in the arm 20 (Fig. 3). Adjacent this end, the lever 30 has a laterally extending pin 31 which rests in a cam notch 32 formed on the upperside of the arm 20 when the arm is in the position shown in Figure 1 and which is effective to turn the arm in a clockwise direction in opposition to the spring 29 to position the arm as shown in Figure 2 whereby the cones are separated. The other end of the lever has a handle portion 34 adapted to facilitate manual operation thereof.

From the foregoing description, it will be seen that the present invention provides an improved yarn furnishing mechanism wherein the feed rolls are adapted to be separated when idle in a simple and practical manner to prevent damage to the facing or covering thereof. The device in accordance with the invention is rugged in construction and can withstand any rough usage to which it may be subjected.

As various changes may be made in the form.

' construction and arrangement of the parts herein, without departing from the spirit and scope of the invention and without sacrificing any of its advantages, it is to be understood that all matter herein is to be interpreted as illustrative and not in any limiting sense.

It is also to be understood that the following claims are intended to cover all the generic and specific features of the invention herein described, and all statements of the scope of the invention which, as a matter of language. might be said to fall therebetween.

I claim:

1. In a yarn furnishing mechanism, the combination of a drive shaft, a feed roll mounted on said shaft, a second feed roll adapted to engage said first roll and be rotated thereby, an arm pivotally mounting said second roll; spring means engaging said arm to place said second roll in engagement with said first roll, and a lever having a portion engaging a portion of said arm to move said arm into a position whereby said second roll is out of engagement with said first roll, said arm and lever portions being constructed and arranged for latching said second roll in out of engagement position and said spring means cooperating to urge said arm in a position to frictionally retain said arm and lever portions in latching position.

2. In a yarn furnishing mechanism, the combination of a pair of rotatably mounted feed rolls one of which is adapted to rotate the other, a pivotally mounted arm rotatably supporting one of said rolls at one end thereof and having a cam notch adjacent its other end, spring means engaging said arm to urge said roll mounted thereon into engagement with said other roll, and a lever pivotally mounted adjacent said arm having a projection thereon adapted to extend into said notch when said arm is positioned for causing said rolls to engage each other and being onerable to engage said arm adjacent said notch to position said arm in opposition to said spring means for causing said rolls to disengage.

3. In a yarn furnishing mechanism. the combination of a pair of rotatably mounted feed rolls one of which is adapted to rotate the other, an arm pivotally mounted at a point between the ends thereof and rotatably supporting one of said rolls at one end thereof, spring means engaging said arm at the other end thereof to urge said roll mounted thereon into engagement with said other roll, and a lever pivotally mounted adjacent the end of said arm engaged by said spring means having a portion for engaging said arm at its last mentioned end to move said arm into a position whereby said roll supported on said arm is out of engagement with said other roll and said spring means and said lever portion cooperate to latch said arm in such position.

' EDWARD J. HEIZER.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 1,080,522 Boyd Dec. 2, 1913 1,594,958 Howie Aug. 3, 1926 1,682,333 Hart Aug. 28, 1928 1,782,470 Heisler Nov. 25, 1930 1,840,642 Stone Jan. 12, 1932 1,867,635 Swinglehurst July 19, 1932 2,061,498 Bird Nov. 17, 1936 2,072,452 Hughes Mar. 2, 1937 2,087,820 Sheppard July 20, 1937 2,273,052 Lawson 1 Feb. 17, 1942 2,306,342 1 Marsh Dec. 22, 1942 2,333,705 Cooper Nov. 9. 1943

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