US1347165A - Fly-frame - Google Patents

Description

1. H. JONES.

FLY FRAME. APPLICATION FILED AUG.28, I919.

Patented July 20, 1920.

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J. H. JONES.

FLY FRAME. I APPLICATION FILED AUG.28, 1919.-

1,347, 1 65. Patented July 20, 1920.

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JOSEPH H. JONES, OF WINTHROP, IHASSACHUSETTS, ASSIGNOR OF ONE-HALF TO THOMLAS E. HEATLEY, 0F V] INTER-O1, MASSACHUSETTS.

FLY-FRAME.

Specification of Letters Patent.

Patented July 20, 1920.

Application filed August 28, 1919. Serial No. 320,513.

To all whom it may concern:

Be it known that I, Josnrn H. J ONES, a citizen of the United States, residing at Winthrop, in the county of Suffolk, State of Massachusetts, have invented a certain new and useful Improvement in Fly- Frames, of which the following is a specification, reference being had therein to the accompanying drawings.

The invention is applicable to the machines called fly or roving frames which are employed for forming slivers of carded material into rovings in preparation for being spun into yarns. It has been designed more especially as an improvement in the cone-belt controlling devices of the cone-andbelt systems of such machines. One general object of the invention is to remedy certain defects in the working of the said systems and of the machines in which'they are employed. Another is to remedy a cause of wear of the belts of the said systems.

Under the general object mentioned first, special aims of the invention are to secure a completely positive control of the conebelt, which is lacking in the case of controlling devices constructed as heretofore in practice; and to insure that at all times the location of the cone-belt upon the cone which is driven thereby shall coincide accurately with the position of the belt guide. Through the attainment of these aims, variation from the predetermined degree of tension of the rovings is prevented in the use of the invention in a flyframe. Another of the said aims is to eliminate tendency to change of position of the cone-belt upon a cone at the time of a stopping of the machine, so as through such elimination to avoid the liability to change of tension of therovings that ordinarily occurs in the use of existing machines as a result of such change of position when a machine is stopped, started, and again stopped, one or more times, in bringing the machine to rest with the fliers in convenient position for piecing-up.

The invention consists, more particularly, in a cone-and-belt system having a belt-controlling device of the improved and novel character hereinafter claimed which I will now describe with reference to the draw ings, in which latter,

Figure 1 shows in elevation certain of the elements of a fly-frame, and in connection therewith an illustrative embodiment of the lnvention, such embodiment being of the preferred form.

T Fig. 2 is a sectional view on line 2,2, of 11g.

Fig. 3 is a sectional view on line 3, 8, of F 1g. 1.

Fig. 4 is a plan view of the belt-guide of Figs. 1, 2, and 3. i i

Fig. 5 a view of the said belt-guide in vertical section.

Fig. 6 is a front elevation of the U-shaped link member 12.

Fig. 7 is a side elevation of the said linkmember.

Fig. 8 is a sectional view on line 8, 8, of Fig. 6.

Fig. 9 is a sectional view on line 9, 9, of Fig. 6.

Figs. 10 to 1a are views showing a modied form of belt-guide.

The drawings show, all as usual in flyrames, the top cone 1 mounted upon the shaft 2 turning in stationary hearings in the machine, the bottom cone 3 journaled in bearings in connection with the side-arms of the vertically swinging frame e, the conebelt 5, and the rack-bar (3 carrying means for controlling the position of said cone-belt in the length of the cones. In usual prac tice, belt-guiding forks or guides connected with the rack-bar embrace the cone-belt adacent the top and bottom cones respectively. One of such forks or guides is shown at 7, located close to the under side of the top cone. It is fix dly attached to the top of the cross-head 8 secured to the rack-bar. A second fork or guide, it embodying the principles of the invention, is shown at 5) alongside the bottom cone.

In a fly-frame, the top cone 1 drives the bottom cone 3 through the cone-belt 5, and the bottom cone by means of its connected pinion drives the gear 11, thereby actuating a train of gearing of which such gear 11 is an element and which, through one branch thereof 'overns the com pound or differential of the bobbin-rotating mechanism. A second branch of said train actuates the bobbin-rail or carriage, traversing it up and, down to distribute the rovings lengthwise of the bobbins in successive layers thereon. As is well-known, step-by-step I I been wound upon the bobbins increases, producing a uniform surface speed of the roving-mass that causes the rovings to be wound at a uniform rate upon the bobbins and maintains the rovings under substantially uniform tension. Another effect is a decrease in the speed of the up and down traversing movements of the bobbin-rail or carriage, to cause the successive layers to be wound with uniform closeness, notwithstanding the progressive increase of the y wound masses in circumference.

It should be noted that a belt encircling a cone naturally tends to climb toward the large end of such cone, in accordance with a well-established principle of operation. Consequently, during the regular working of the fly-frame, the lower guide or fork, 8, performs the function of restraining the cone-belt from climbing faster in that direction along the bottom cone than permitted by the said step-by-step movements of the rack-bar. 7

'Because of the tendency of the cone-belt to climb toward the large end of the bottom cone, there are important practical ob.- jections connected with the usual location of the lower fork or guide, namely at such a distance from the bottom cone that a free run of the belt extends from such fork or guide to that portion of the cone-surface upon which the belt first impinges. Such location permits a lateral deflection of the said free run toward the large end of the cone to occur between the said fork or guide and the surface of the cone. Through this lateral deflection the leading margin of the cone-belt is causedto press laterally against the forward side-portion of the fork .or-

guide, the effect of pressin'g thereagainst being that it is bent around said slde-portion. Friction and wear of the said edge result, shortening the useful life of the belt. The pressure has a tendency to crowd the material of the belt-edge back upon the intermediate portion ofthe belt with a mushrooming effect, thickening said edge. Sometimes the mushrooming effect becomes so great that the thickened head or flange prolVhi'let-he fly-frame is running with the belt thus deflected, the ratio of the speed of the bobbins to that of the fliers is less thanithat which would'eXist if the position of the encircling portion of the'belt corresponded rexactly with that of the fork or guide. In case of stoppage of the machine there is a tendencyflto more or less complete loss of the deflection by reason, of the return of the deflected portion of the cone-belt into true line with the fork or guide'as the motion of the machine elements slows down and ceases. Consequently, greater or less difference in the tension of the rovingsusually is perceptibleafter the machine has been'stopped, restarted, and stopped again, one or more times in bringing the machine to rest with the fliers in a favorable position for piec- 1ng-up.

"In accordance with the invention I employ'in connectionwith the bottom .cone 3, i.-e. the cone which is driven by meansof the cone-belt, a belt-guide 9 which controls the advancing portion of the cone-belt at its point of ongoingtangency to the said cone. v

As shown in the drawings, this belt-guide is in the form of a block having side-flanges a c its side-flanges stand close to the cone-surface, at opposite edges of the belt, at the point or line where the portion of belt moving toward. and around the cone is tangent to the cone-surface. Th-e side-flanges, or at least the one nearerthe large end of the cone, cooperate with the said edges at and adjacent the said point or line, Thereby the cone-belt is controlled positively, because there is no free portion of the belt intermediate the belt-guideand the surface of the It is mounted in such position that cone which can be deflected laterally relative to .or independent of the guide. c

Also, through engagement of the fork or belt-guide with the belt at the point orline of ongoing tangency, the belt is controlled as to its position lengthwise of the cone the swing-frame'in which the cone 3 is journaled. The said bar extends close to and parallel vor substantially parallel with the surface of the cone, from one end of the latter to the other. The drawings show the cone 3 as having the usual longitudinally convex shape, and the bar slightly curved to correspond with such shape. In the illustrated embodiment the bar is rectangular in cross-section, and the guide is formed with an eye 9 of corresponding shape in crosssection to fit the bar so as to keep the guide from rotating around the bar while it is capable of sliding along the same from one end of the cone to the other.

The belt-guide 9 is combined operatively with the rack-bar in a manner which causes the belt-guide to travel in unison with the rack-bar, while permitting the bottom cone to be swung upward, to slacken the conebelt, as usual in the operation of fly-frames. In the drawings a U-shaped link-member 12 is shown. The upper ends of its side-arms are engaged by pivots 13, 13, with the cross head 8 of the rack-bar, while its cross-bar 12 dies against the outer side of the beltguide 9, with the said side-arms overlapping the opposite ends of the guide. Through the engagement of the side-arms with the ends of the guide, unisonmovement of the rackbar and guide lengthwise of the cones is insured. The hinged connection of the linkmember with the cross-head 8 enables its lower end to accommodate itself to the varydistance of the belt-guide from the axis ofthe bottom cone as the parts move from one end of said cone to the other. The said hinged connection of the link also permits it to be swung up out of engagement with the l3Gltgl11Cl6 when desired, so as to give free access to the belt-guide, and to permit eredi again the link-member swings downward, also, remaining'in engagement with the beltguide.

Since the guide 9 holds the portion of the belt which encircles the bottom cone from deflection toward the large end of the bottom cone, between said guide and the conesurface, there is no tendency to backward shift of the belt in the reverse direction when the frame is stopped. Consequently, the undesirable results heretofore noticed in the operation of fly-frames are obviated.

Figs. 10 to 14 show a modified belt-guide having at the end thereof toward the large end of the bottom cone an anti-friction roll 8 to reduce the friction against the corresponding edge of the belt. A fixed stud 8 is shown at the other end of the guide to cooperate with the other edge of the belt, but a roll may be substituted therefor if desired.

WVhile I have illustrated and described certain forms in which the invention may be embodied, I am aware that many modifications may be made in the construction and arrangement by a person skilled in the art,

without departing from the scope of the invention as expressed in the claims. Therefore, I do not wish to be limited to the particular forms shown, nor to the details of construction thereof, nor to the employment of the features of the invention in flyframes alone, but

What I do claim is 1. In a cone and belt system, the combina tion with a cone mounted with capacity for movement to slacken the cone-belt, and a shifter-bar to which movement is imparted to shift the cone-belt progressively along said cone, of a guide-bar extending lengthwise of the cone, a guide or fork which is adapted to travel along said guide-bar and having belt-controlling flanges which fit close to the surface of the cone, and a link-member through which said fork is connected with the shifter-bar so as to partake of the traversing movement of the shifterbar, said link-member movably combined with the shifter-bar to permit it to accommodate the movement of the cone in slackening the cone-belt.

2. The combination with a cone and belt system, of a belt-guide engaging with the side-edges of the belt at its point of ongoing tangency to the cone encircled by the belt.

3. A cone andv belt system having a beltguide controlling the belt at its point of ongoing tangency to the cone.

4. A cone and belt system having a shifter-bar to which movement is imparted to shift the belt progressively along said cone, and a belt-guide connected with said shifter-bar and contacting with the belt at its point of ongoing tangency to the cone.

5. A cone and belt system including a cone mounted with capacity for movement to slacken the cone-belt, 'e shifterdoa'r, a beltguide controlling the belt at its point of ongoing tan-gency to the cone, endalink-member through which traversing movement is imparted to said belt-guide'from said shifter-bar. I i,

6. A cone and belt system including a I cone, :1 shifter-bar, a belt-guideeontrolling the belt atits point of. ongoing tangency to thoeone,.a, slide-bar for said beltguide ex:

tendinglengthwise the cone and paralleling the surface thereof, and a link-member through which traversingmovement is im- 1gartecl to saidbelt-guide from the shifter:

312; i V i In testimony whereof I affix my signature in presence of two Witnesses. 1 Y JOSEPH H. JONES.

NVitnesses:.- g 7 CHAS. F. RANDALL, L. RANDALL.

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