US2287557A - Apparatus for continuously drawing and winding glass fibers - Google Patents

Description

June 1942. P; MODIGLIANI APPARATUS FOR CONTINUOUSLY DRAWING AND WINDING GLASS FIBERS Filed March 5, 1939 N N awe/Mm! i HERO MOD/GL/A /v/ Patented in... 23, 1942 2,287,557 APPARATUS FOR CONTINUOUSLY DRAWING AND WIND ING GLASS Piero Modigliani, Leghorn, Italy, minor to Owens-Corning Fiberglas Corporation, Toledo, Ohio, a corporation of Delaware Application Marchil, 1939, Serial No. ,259,705

In Italy March a, 1938 9 Claims.

The present invention relates to a process of V and apparatus for continuously drawing and winding glass fibers or filaments with a group of rotatable and revoluble drums.

In drawing and spinning. by means of one drum, in order. to have the operation of drawing as nearly continuousas possible, use has been made oftwo coaxial drums, one in the extension of .the other, and when one of them is charged, the movable furnace with the drawplate-or spinning mechanism is shifted to the drum to be charged. This method, however, is defective be-' cause during the change a portion of the filament which the drawing mechanism continues to produce is dispersed and also the filament becomes attached to the drum, aside from the inconvenience and complications of readjusting the furnace and the spinning or drawing mechanism.

According to the present invention the change of the rotating drawingand winding drums is made by making the system of drums revoluble about a common central axis, without disturb-v ing the positions or the oscillatory movements of the furnace and without interference with the drawing operation as the filaments or threads pass automatically from one winding drum to the other during the change without becoming caught. In order further to assure continuity of the drawing during the passage from one to the other drum use is made of a cooling system for the filaments in their passage from the spinning or drawing mechanism to the respective drawing drum. This cooling system also contributes to improve the molecular structure of the thread and to impart certain desirable properties thereto A machine for carrying out the method is 11- lustrated merely by way of example on the accompanying drawing, wherein Fig. l is afront elevation of the right part of the machine, it being understood that it is completed by another equivalent half at the left; Fig. 2 is a vertical sectional view of Fig. l with certain parts in elevation; and Fig. 3,is a top plan view of the eration at the timeis shown at 2; 3 is the drum which is-inoperative and charged, and in this state can be relieved of its charge by any suitable means, for example, by removing the drum and substituting another, or bycutting the deposited felt, for example by an incision parallel with one or its elements or generatrices. A drum ready for operation is shown at 4, that is, it is empty and is rotating at the rate of drawing. Three shafts 2', 3 and t are mounted rotatably on two end platforms or discs like that shown at the right in Fig. 1, and designated as 5, which extends from the right portion of the base I. Pulleys 2", 3" and 4" are fixed to the respective shafts 2', 3' and i; A pulley 8 is mounted somewhat eccentrically with respect to the pulleys 2", 3", i", and serves to guide and transmit the drive from the drive shaft ii to the belt l2 held taut by the belt tension device E2.

The end platforms or disks 5 may be rotated by manually grasping the disks or'a crank handle may be afilxed to the one end of the shaft 54;.

In either event the disks 5 at the proper time I pulley 8 thereon is connected to any suitable source of motive power.

The operation of the machine is as follows: To advance the drums it is necessary merely to rotate the two platforms 5. In the handling of three drums, the rotational angular movement of 120 is imparted to the revoluble discs 5. It is clearly apparent from the arrangement of the pulleys and the belt that only two of the three drums are driven, to the exclusion of the drum which, after having been charged, comes to the successive stage, which is displaced 120, with respect to the operative stage by the rotation of the discs, during the revolutions of these drums. r

The cooling coil interposed between the drawplate and the drawingiand winding drum operates in desired .manner to cool the thread and thereby improves its consistency, particularly for the drawing.

,In practice the number of drums may vary as desired although three appear to give the best results. Although the invention is described and shown herein by way of example only, it is to be understood that numerous modifications may be provided therefor without departing from the the handling of alltypes of artificial fibers or filaments other than glass.

What is claimed is:

1. In an apparatus for continuously drawing and winding artificial fibers on, drums which comprises a rotary frame, three drums disposed the previously idle third drum into engagement with said driving means.

2. In an apparatus for continuously drawing and winding artificial fibers on drums which comprises a horizontal rotary shaft, end plates mounted on said shaft, rotary shafts 'mounted near the edges of the end plates'equidistantly disposed therearound, a drum and a pulleyfixed- 1y mounted upon each.of said last mentioned shafts, a driving pulley mounted in the plane of the pulleys on said shafts and an endless transmission member'connecting said driving pulley with two of said last mentioned pulleys and disengaging another and independent pulley.

3. In an apparatus for continuously drawing. and winding glass fibers on drums, which comprises a horizontal rotary shaft, end plates mounted on said shaft, rotary shafts mounted near the edges of the end plates equidistantly disposed therearound, a drum and a pulley fixedly mounted upon each'of said last mentioned shafts, a driving pulley mounted in the plane of the pulleys on said shafts, an endless transmission member connecting said driving pulley with two of said last mentioned pulleys and disengaging another and independent pulley, and a drawing plate producing 'glass fibers adapted to be charged on one of the drums connected with one of the driven pulleys.

4. In an apparatus for continuously drawing and winding glass fibers, on drums, which comvin the plane of the pulleys on said shafts and eccentrically with respect thereto, an endless transmission member connecting said driving pulley with two of said last mentioned pulleys and disengaging another and independent pulley, and an oscillatory drawing plate producing glass fibers adapted to charge one of the drums scope of the invention, which maybe applied to nected with one of the driven pulleys preparatory to charging the other drum connected with the other driven pulley, anda cooling device between said drawing plate and said drum assembly comprising a housing formed by a plurality of coils adapted to convey a cooling medium therethrough.

6. In an apparatus for continuously drawing and winding glass fibers on drums, which comprises a horizontal rotary shaft, circular end plates mounted on said shaft, three rotary shafts displaced 120 around the peripheries of the end plates, a drum and a pulley fixedly mounted upon each of said last-mentioned shafts, a driving pulley mounted in; the plane of the pulleys on said shafts and eccentrically with respect thereto, an endless transmission member con necting said driving pulley with two of said lastmentioned pulleys and disengaging another and independent pulley, an oscillatory drawing plate producing glass fibers adapted to charge one of the drums connected with one of the driven pulleys preparatory to charging the other drum connected with the other driven pulley, said first mentioned horizontal shaft being rotatable successively 120 to bring the charged drum into disengaging position with the driving pulley, and

simultaneously to bring the other driven drum .into operative position with respect to the drawing plate and a previously empty and idle drum into driving engagement with the driving pulley.

loss of motion or fiber in consequence of a parconnected with one of the driven pulleys preparatory to charging the other drum connected and a pulley fixedly mounted upon each of said last-mentioned shafts, a driving pulley mounted in the plane of the pulleys on said shafts and eccentrically with respect thereto, an endless transmission member connecting said driving pulley with two of said last-mentioned pulleys and disengaging another and independent pulley,

an oscillatory drawing plate producing glass tial rotation of said frame to remove said first drum from charging position and to place said second drum into charging position.

8. An apparatus for continuously drawing and a 'winding artificial fibers on drums comprising arotary frame, a plurality of drums displaced angularly on said frame and rotatably mounted therein, and means for simultaneously driving the drum being charged with the artificial fibers.

and the next successive drum to be charged, whereby said second drum is in condition to assume its charging function smoothly without loss of motion or fiber in consequence of a partial rotation of said frame to remove said first drum from charging position and to place said second drum into charging position.

9. An apparatus for continuously drawing and winding artificial fibers on drums comprising a rotary frame, a plurality of drums angularly disposed around said frame and rotatably mounted therein, common means for simultaneously driving the drum being charged with the artificial fibers and the next successivedrum to be charged, whereby said second drum is in condition'to assume its charging function smoothly without loss of motion or fiber in consequence of a partial rotation of said frame'to place said second drum into charging position and to remove said first drum from charging position whereat the same isdisconnected from said drivfibers adapted to charge one of the drums coning means preparatory to the handling .of the' fibers charged thereupon.

PIERO MODIGLIANI.

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