US2296319A

US2296319A - Oscillating device

Info

Publication number: US2296319A
Application number: US389118A
Authority: US
Inventors: Kohorn Henry Von
Original assignee: Individual
Current assignee: Individual
Priority date: 1941-04-18
Filing date: 1941-04-18
Publication date: 1942-09-22
Anticipated expiration: 1959-09-22

Description

i Vor# KHQN" l 2,296,319

. oscILLATING DEVIGE Filed April 18, 1941 i ATToRNYs bin.

Patented Sept. 22, 1942 UNiTED s. f-Ars oscILLA'nNG nevica y Henry Von Kohorn, New York, N. Y.

`Arl'mlication April 18, 1941, Serial No. 389,118 1o claims. (ci. 242-43) The present invention relates to an improved means for producing an oscillating motion.

The 'main object of my invention is to pro- Y vide an improved means for imparting an oscilswinging or reciprocating motion, I shall for the' purpose of illustration, describe my' invention as applied to an oscillating thread guide used in` winding bobbins or the like,'but it` should be understood that I do not ,'wish to be limited thereby.

Inwinding bobbins, the thread beforerbeing wound on the bobbin, is usually led through aI guide, which guide is reciprocated so that the `bobbin may be uniformly wound. However, in

the usual guide generally in use, the saidguide is so reciprocated thatv at the end of the stroke there is a pause, duringwhich time the guide reverses its' direction. Because this pause is usually unduly long.` the bobbin is not uniformly wound and bulges occur at each end of the bob- The disadvantages of these bulges are obvious;

Such bulges" are undesirable and actually very harmful in the treatment of a thread or yarn on the bobbins, such as washing, drying, bleaching, dyeing, steaming and other operations. In View ofthe fact'that at these bulges the thickness of the package of yarn is greater, the treating time must be based on the treating time required by the package at these bulges. While, for example, it may be sufficient to bleach a package of yarn of adeiinite thickness for two hours; the bulgeswhich may have twice the thickness `would require four hours in order to 'be--fu11y bleached. But if the whole package is subjected to four hours of bleaching, most of the yarn will have been attached and destroyed bythe actiony oi' the bleaching solution.

It istherefore the main object of my invention to provide ameans which will wind a bobbin uniformly throughout, Without the presence of any undesirablebulges. l

Another object-of myinvention is to provide i a means which maybe easily and simply secured .to the present types of winding apparatus, which means will" remedy' any bulges which might otherwise'be formed on the wound bobbins.

Other objects of my invention will be set forth in the following description and drawing which illustrate preferred embodiments thereof, it being understood that the above statement of the objectsof my invention is intended generally to explain the same without limiting it in any man- Fig. 1 is a front view of thread guiding means as generally now in use;`

Figs. 2 and 3 are front views of thread guiding means in different positions of the stroke, said vthread guiding means embodying `one embodiment of my improvement; l

Fig. 4 is a different type of thread guiding means now in use; Figs. 5 and 6 show my device as applied to thread guiding means illustrated in Fig. 3;

Figs. 'IV and 8 illustrate another embodiment of my device;

Fig. 9 is a frontview of still another embodiment;

Fig. 10 is a sectional'view of the bobbin as presently wound;

' of my device; and

Fig. 15 is a front view thereof.

Referring to the drawing, in the usual type of bobbin Winding means, a bobbin 4 having a winding v5 is rotated about its longitudinal axis and-a thread or yarn I4 is led through a guide member, which guide member is reciprocated along the length of the'bobbin, thus depositing `the thread along the entire outer face of the bobbin. A guide 8 is-usually positioned at the end of a pendulum 1 or arm I3, which pendulum or arm is mechanically motivated so as to oscillate or reciprocate, the length of said oscillation being slightly less than the length of the bobbin to be wound. This oscillation is usually a simple harmonic motion, or at most a motion in which there is a substantial stop at both ends of thestroke, and it is quite obvious that due to this stop, since the bobbin rotates at a,A

uniform speed, more thread will be wound at the end of the bobbin, thus causing the undesirable bulges 3. i

I have found that by reducing the time of stop` at the end of the stroke of said guide 8the bulges left.

the lower end of the pendulum 1, said point 9 being at an intermediate point on the arm I0. At the other end of the arm I is a weight I2. I so mount the guide II, arm I 0 and weight I2 so that the guide I I is at the lowermost position and at the lighter end of the arm II), and the arm I0 is restricted to pivotally swing about point 9 within a predetermined arc.

The device would operate as follows:

As the bobbin is rotated and thread is fed through the guide II, the pendulum `1 oscillates or swings back and forthv (see Figs. 2 and 3). As it approaches the right uppermost point in its swing, the weight I2 is in lagging position and the guide II is in the leading position. When the pendulum l stops to reverse its motion, since the weight I2 has the motion imparted to it by the swinging pendulum T, said weight I2 continues to move in the original direction,l thus causing the arm IIJ to rotate clockwise around point 9, and the guide II to move towards the It is obvious that this motion is directly reversed as the pendulum is at the other end of its swing. Thus, the time of stop of the guide member II is greatly reduced, therefore eliminating the uneven winding of the bobbin Il and the resultant bulges 3.

In Figs. 5 and 6, I show an arrangement similar to that shown in Figs. 2 and 3, but as applied to a guide member which moves along the length of the bobbin by means of the reciprocating rod I3. The operation of the guide II mounted on the lighter end of arm I0, and weight I2 is similar to that shown in Figs. 2 and 3.

Figs. 7, 8 and 9 merely show my device illustrating how the swing of the arm I0 is limited. In the embodiment shown in Figs. 7 and 8, the swinging pendulum 1 is a hollow tube and has pivotally mounted therein the arm I0, one end of said second arm being rotatable about a In Figs. 14 and 15 I have shown still another embodiment of my device. In this embodiment, an arm I0 is pivotally mounted by means of a weight 9 within the forked end of the pendulum A 1, the upper end of said arm being sufliciently weighted. Springs I6 are connected by means c-f pins I8 to each side of the swinging arm I0, the other ends of said springs being secured by means of pins I1 to the pendulum. These springs merely act as a buffer for the arm I0 So that when it does reverse its direction, there will be no jarring.

y larm moves in a direction opposite to that of the oscillating arm when said oscillating arm approaches the end of its stroke, and travels in .the same direction as the oscillating arm the remainder of the stroke.

` 2. A device of the character described, comprising an oscillating arm, a second arm pivotally mounted on said oscillating arm, saidsecond arm being so mounted that the free end thereof will move in a direction opposite to that of the oscil.

lating arm when said oscillating arm approaches the end of its stroke, and travels in the same direction as the oscillatingv arm the remainder of the stroke.

3. A device of the character described, comprising a swinging arm, a second arm pivotally mounted on said swinging arm, said second arm being freely rotatable about a point below its center of gravity.

4. A device of the character described, comprising a swinging arm, a second arm` freely swingably mounted on said rst swinging arm, said second arm being pivoted about a point below the center of gravity thereof, vthe swing of said second arm being restricted within a predetermined arc.

5. A device as claimed in claim 4, in which a thread guide member is provided at the lower free end of the second swinging arm.

6. A device of the character described, comprising a swinging tubular member, an arm pivotally mounted within said tubular member, said arm being freely swingable about a point below its center of gravity, the lower end of said arm projecting below the lower end of said tubular member.

7. A device as claimed in claim 6, in which a thread guide member is provided at the lower end of said rotatable arm.

8. A device of the character described, comprising a reciprocating arm, a second arm freely swingably mounted on said reciprocating arm, point below the center of gravity thereof.

9. A device of the character described, comprising an oscillating arm, said oscillating arm having a forked end, a second arm pivotally mounted between the legs of said forked end, said second arm being swingable about an axis passing below the center of gravity of said second arm, a pair of springs, one end of each spring being secured to the upper end of the swingable arm, the other end of each spring being secured to the oscillating arm.

10. An oscillating device for producing an oscillating motion with reduced dead stop at the end of the stroke and change of direction, com? prising at a point on said oscillating arm a second arm pivotally mounted on said oscillating arm about a point removed from the center of gravity of said second arm, the lighter end of said sec- `ond arm carrying a guide so that when at the end of the stroke of the oscillating armsaid oscillating arm reverses its direction the heavier end of the second arm continues for a moment on its original path due to its inertia, swinging around the point on which it is mounted and changing its relative position to the oscillating arm and therewith the position of the guide at the light end of the second arm abruptly and instantaneously giving it an impetus in the reversed sense and in a direction opposite to the original direction of the oscillating arm.

y HENRY VON KOHORN.