US2082443A - Thread tension equalizing device - Google Patents

Description

A. J. DESJARDINS THREAD TENSION EQUALIZING DEVICE June 1 1937.

Filed July 24, 1.936

m l T. 1 m 9 1 A w m J W F I- n 7 v M gzlldl A TTORNE Y.

Patented June 1, 1937 UNITED STATES THREAD TENSION EQUALIZING DEVICE Alfred J.,Desjardins, Manchester, N. H., assignor to George Greenspan,"New' York, N. Y.

Application July 24,

.6 Claims.

This invention relates to thread tension-equalizing devices.

The general object of the invention is to providean improved device for equalizing the tension on threads or yarns of all types and sizes which are required to be fed or drawn off under substantially constant tension in various textile operations.

The invention is particularly beneficial in winding threads from one form to another; in drawing off of threads from wound bobbins or the like; for winding, warping, quilling, or in other operations of crepe; and for removing kinks from twisted yarn during operation. The use of the invention makes for regularity and consequently results in the production of superior fabrics.

It is another object of the invention to provide a device for maintaining under substantially constant tension a thread drawn ofi of a spool, bobbin or the like, regardless of changes in the amount of thread wound upon the spool.

It is another object of the invention to provide a device for maintaining under substantiallyconstant tensionathread or the like drawn therethrough, regardless of the speed .at which the thread is drawn therethrough.

Itis another object of the invention to provide a device for equalizing the tension of a thread drawn therethrough which holds taut all portions of the thread-passing through the device during operation,,and which, upon the interruption of operation, takes up the slack which the inertia of the thread tends to create. Thus, at all times, the'thread is under substantially constant tension.

It is another object of the invention to provide a thread tension equalizing device adapted to produce desired constant tension in yarns and threads of different weights, sizes and degrees of flexibility. In prior practice, different devices have been required for different threads; and when, during operation, a change'of thread was required, a different tension device had to be 5 set up. The present invention, in eliminating the necessity for so changing the tension device results in simpler andmore economical operation.

It is another object of the invention to provide 50 a thread tension equalizing device which is inexpensive and simple to construct, which is easily 60 Another feature of the invention resides in the 1936, Serial N0. 92,274:

pro-vision of a thread tension equalizing device having a series of stationary eyelets and a series of adjustable eyelets, said adjustable eyelets being Weighted.

Anotherfeature of the invention resides in the provision of a thread tension equalizing device having a series of stationary eyelets and a series of adjustable eyelets, said adjustable eyelets being provided with means for aligning them with said stationary eyelets, to facilitate threading of the device.

Other objects, features and advantages'of the invention will be more apparent from thevfollowing description to be read in connection with the accompanying drawing in which:

Fig. 1 is a perspective View of a thread'tension equalizing device in accordance with theinvention, shown in threading position;

Fig. 2 illustrates the device of Fig. 1 in operation; and

Fig. '3 illustrates, on an enlarged scale, one of the adjustable eyelets.

Referring to the drawing, a frame member 2 is provided with a plurality of stationary eyelets 3 formed in members l extending downwardly from the frame member and suitably attached thereto in any desired manner. The members 4 are preferably equally spaced from each other.

The member 2 is provided with a plurality. of

openings 5 formed therein between the stationary members 4. Within the openings '5 are disposed rods 6, whose diameter is such as to permit free movement within and through the holes '5. In a preferred form of the invention, a pair of holes 5 is provided between each set of adjacent members 4. Each pair of rods 6 slidably passes through a member 1, sustained by nuts 9a, at the lower ends of rods 6. Each member I has an eyelet '8 and is positioned midway between the members 4 on either side thereof. The rods 6 extend through a plate or threading member In above the frame member 2 and are provided at their upper extremities with nuts or the like 9. The upper side of plate It] is provided with a handle II.

The members I are so formed that when the handle II is raised, thus lifting the rods 6 and causing the upper portions of members 1 to abut frame member 2, the eyelets 8 will be in alignment with the eyelets 3. Thus, thread I may readily be drawn through the various eyelets 3 and 8 of the device by a suitable threading needle or the like. When the device has been threaded, the handle II is released and-operation is commenced.

'The members 1 constitute weights which are free to move up and down on the rods-'6, and these-members, during operation, continually bob up and down to provide, automatically, the desired tension in the thread. The positions of the members I will vary with the speed of the running thread or yarn.

Where high speeds are used, it is desirable to thread the yarn through most or all of the weighted eyelets of the device. Where, however, low speeds are used, the desired control of thread tension may be effected by threading the thread through a smaller number of weighted eyelets. If, for example, it is desired to employ only one-half of the weighted eyelets, the thread would be threaded in the usual manner through the first half of the device; then the hand- II would be lowered and the thread passed through the remaining stationary eyelets without passing through the remaining weighted eyelets. Or, if desired, the threading member or plate l0 may be formed in two or more sections, each connected with one or more of the members 1. By raising the desired number of members 1, the threading may be effected by a single uninterrupted passage of the threading needle.

When a heavy or relatively stifi yarn is used, a relatively great number of the weighted eyelets are employed, whereas when a light or readily flexible yarn is used, fewer weighted eyelets need be employed.

It will be understood, of course, that the size and proportions of the device, the number of eyelets and the weight of the weighting elements may all vary in designing devices according to the invention for diiferent types of service. Where very heavy yarns are to be handled, for example, the weights will be relatively heavy; and Where very stiff yarns are to be handled, the eyelets may be spaced further apart than where flexible yarns are to be handled. But each device will have a wide range of applicability and will meet all the requirements of one or more particular types of service, despite variations in the speed, weight and flexibility of the running yarn, which can be compensated for by changing the number of weighted eyelets through which the yarn is threaded. The invention thus obviates the necessity ror changing from one tension device to another with a change in yarn or speed, as has hitherto been common practice in the art. Applicant's device is adapted to give long service before replacement of any of the parts hecomes necessary; but it is to be noted that practically all of the parts thereof are interchangeable. Thus, replacement, while seldom required, is cheaply and readily accomplished.

To prevent chafing or other injury to the thread drawn through the device, the eyelets 3 and 8 are preferably formed of porcelain or other suitably smooth-surfaced material.

It will be apparent to those skilled in the art that many changes in and modifications of the invention may be made without departing from the scope thereof. For example, when heavier yarns are handled, auxiliary weights may be secured in any desired manner to the members I. So also, the plate Ill and handle Il may be dispensed with, without interfering with or in any way affecting the operation of the device, although in such case threading of the device would be less simple and quick than when they are employed. The above description and accompanying drawing, therefore, are to be regarded as illustrative only, applicant limiting himself only as indicated in the appended claims.

I claim:

1. A tension compensating device including a frame member, a series of stationary eyelets and a series of adjustable eyelets, said eyelets being individually adjustable, said adjustable eyelets being positioned between said stationary eyelets and being adapted to move in a substantially vertical direction, weighting means in combination with said adjustable eyelets for producing tension in thread drawn through the stationary and through the adjustable eyelets of the device, and means in combination with said adjustable eyelets for aligning them with said stationary eyelets for threading.

2. A tension compensating device including a frame member, a series of stationary members having eyelets formed therein, a series of adjustable members having eyelets formed therein, said adjustable members alternating with; said stationary members and being adapted to move in a vertical direction, rods associated with said adjustable members, and a threading member in combination with said rods, whereby upward motion of said threading member raises the eyelets of said adjustable members into alignment with the eyelets of said stationary members, for threading of the device.

3. A tension compensating device including a frame member, a series of stationary eyelets and a series of individually adjustable eyelets, said adjustable eyelets alternating with said stationary eyelets and being adapted to move in a vertical direction, and means in combination with at least two of said adjustable eyelets for raising said eyelets together into alignment with said stationary eyelets.

4. A tension compensating device including a series of stationary thread-guiding elements, a series of adjustable thread-guiding elements, said adjustable elements alternating with said stationary elements and being independently and individually operable, and threading means in combination with said adjustable elements for causing said adjustable elements to assume predetermined positions whenever it is desired to thread the device, whereby threading of the device is facilitated.

5. A tension compensating device including a plurality of stationary thread-guiding elements, a plurality of adjustable thread-guiding elements, at least one of said adjustable elements being operable independently of at least another of said adjustable elements, and threading means in combination with said adjustable elements for causing said adjustable elements to assume predetermined positions whenever it is desired to thread the device whereby threading of the device is facilitated.

6. A tension compensating device including a plurality of stationary thread-guiding elements, a plurality of adjustable thread-guiding elements, at least one of said adjustable elements being operable independently of at least another of said adjustable elements, and threading means in combination with said adjustable elements for causing said adjustable elements to assume predetermined positions whenever it is desired to thread the device whereby threading of the device is facilitated, said threading means including a threading member and means for connecting said threading member with said adjustable elements.

ALFRED J. DESJARDINS.

Images