US2037904A - Endless conveyer for driers - Google Patents

Description

A ria 21, 119360 A HOGG v 2mm ENDLESS CONVEYER FOR DRIERS Filed Jan. 26, 1935 2 Sheets-Sheet 1 April 21, m6. 1A HOGG zmmm ENDLESS CONVEYER FOR DRIERS Filed Jan. 26, 1935 2 Sheets-Sheet 2 Patented Apr. 21, 1936 UNITED STATES PATENT OFFICE Sargents Sons Corporation,

Graniteville,

Mass., a corporation of Massachusetts Application January 26, 1935, Serial No. 3,628

3 Claims.

This invention relates to apron conveyers such as are used in driers, and particularly to conveyers for supporting all the skeins of yarn while the skeins or hanks are carried through a drying chamber.

It has been common practice to support skeins for drying on poles or rods passed through the skeins and from which the skeins depend, these rods passing through the skeins and resting at their ends in seats formed on the lateral chains of the conveyer. A workman at one end of the drier runs a rod or pole through a plurality of these skeins, puts the pole in place on opposed seats of the conveyer, it is then carried through a drier and a workman at the other end of the machine takes the poles off and removes the skeins. Not only does this involve considerable work on the part of the workmen but the poles even when made of metal become worn particularly at the ends Where they rest on the seats and these worn places on the poles are liable to catch the threads of the yarn particularly when the yarn is a silk yarn and tears the yarn. Furthermore, the length of the skeins which can be treated by placing them on poles is very limited unless the machine is very large.

The general object of my present invention is to improve upon drying machines of this character by providing a conveyer of such a structure that the skeins of yarn may be laid flat upon the conveyer and thus facilitating the placing of the yarn on the conveyer belt and its removal therefrom.

A further object is to provide a conveyer of this general type which will accommodate very long skeins of yarn as, for instance, from 8 to 10 ft. in length.

Another object is to provide a conveyer having a minimum of supporting wires or in other words which is not finely or closely meshed and in this connection to provide a construction which will permit of the transversely extending supporting wires being readily removed or readily replaced and which will permit the wires to be closer together or further apart as circumstances may dictate.

Another object is to provide improved means for supporting these transverse wires and of such 50 character that the number of longitudinal supporting wires may be readily increased or decreased.

A further object is to provide a conveyer which may be cheaply constructed, readily assembled 55 and readily taken apart.

My invention is illustrated in the accompanying drawings wherein:-

Figure 1 is a top fragmentary plan view of one form of my improved conveyer, Figure 2 being a section on the line 22 of Figure 1;

Figure 3 is a fragmentary section on the line 3-3 of Figure 1;

Figure 4 is a fragmentary top plan view of a modified form of the conveyer shown in Figure 1;

Figure 5 is a section on the line 5-5 of Fig- 10 ure 4;

Figure 6 is a diagrammatic view showing the manner in which the conveyers may be arranged within the drying chambers.

Figure 7 is a fragmentary top plan view show- 15 ing a modification of the structure in Figure 1.

Referring now to Figures 1 to 3, it will be seen that the conveyer includes two sets of parallel chains as is usual, these chains being composed of the outer links Ill and the inner links ll. 20 These links overlap each other and are pivotally connected by the pivot pins H which extend through the links and project a substantial distance inward of the innermost link. Mounted on bushings shown in dotted lines in Figure 1 25 surrounding the pivot pins 12 are the wheels I3 or rollers which support the endless conveyer on usual tracks M. So far the construction is common and well known. A washer I5 is disposed inward of the innermost link and this washer is held in place against inward movement by the pin it, this pin passing through the pivot pin. Attached to the inner facesof the links H as by spot welding, riveting or any other way are the angle irons IT.

The pivot pins, of course, form the axes upon which the links turn and form the axes of the conveyer sections. Extending across from one pivot pin to the opposed pivot pin is a tubular member I8 into the ends of which the respective pivot pins extend. The flanges ll are formed with a plurality of perforations I9 and engaged throught these perforations with these flanges ii are the transverse supporting wires 20.

As shown in Figure 1, there are seven perforations in each of the angle irons ll but only four transverse wires 20 are used. This is to illustrate the fact that the wires may be disposed close together or relatively wide apart depending entirely upon the material to be treated. Thus for instance, a fewer number of wires may be used, if desired, and as shown in Figure 1, or a greater number.

As shown in Figure 3, the transverse wires 20 are bent to form an elongated eye 2|, the wire being passed through the perforation l9 and then bent inwardly and upwardly so as to form this eye. An eye formed in this manner holds the transverse wire firmly in place and prevents accidental detachment while the end of the eye may be readily bent downward and the transverse wires removed or other transverse wires inserted whenever desired.

Inasmuch as these conveyers ordinarily have considerable width, as for instance 8 or 10 ft., it is necessary that the transverse wires be sup.- ported against sagging. To this end, I have provided a plurality of longitudinal wires 22 which are operatively engaged with the transverse pipes or tubes H! but which have rotation relative to these tubes.

In Figures 1 and 2, I have shown the wires .22 as being formed at each end with a coil 23 which loosely embraces the transverse tubular rod I8 so that the wires may rock relative to the rod l8, as shown in Figure 2, these wires 22 extending throughout their length beneath the wires 20, but I do not wish to be limited to this as the wires 22 may be interwoven with the transverse wires 253 if desired.

While I have illustrated only two longitudinal wires 22 in Figure 1, it will be understood that a greater or less number of longitudinal supporting wires may be used if desired. It will also be understood that all the sections of the conveyer may have the same number of longitudinal wires and these wires may be arranged so that the longitudinal wires of each section are nearly in alinement with each other or they may be staggered.

I have found in actual practice that while the coils or eyes 23 formed at the end of the longitudinal wires 22 only loosely embrace the tubular rods l8, yet that these longitudinal wires will not slide along their rods but will keep approximately the same position at all times while the conveyer is operating. It will be seen that with this construction it is an easy matter to add longitudinal wires, if necessary, or remove one or more of the longitudinal wires and that by this arrangement I secure a conveyer apron which is very slightly obstructive to the free circulation of air which is particularly necessary in driers. Where ordinary wire network is used such as commonly found in these conveyers, the network considerably obstructs the free circulation or passage of air. It is also to be understood that while I have illustrated the longitudinal wires 22 as being of-the same gauge as the wires 20 yet the longitudinal wires might be of heavier gauge in order to form the proper support for the transverse wires and thus relatively few of these longitudinal wires might be used.

In Figures 4 and 5 I have shown another form of my invention. In this embodiment, the links If! and l l, the pivot pins l2, the rollers l3, the washers l5 and the pins It are used as previously described and the same reference numerals are used for these parts. Also in this embodiment the inner links H are provided with the angle irons l7! and provided with perforations IS. The only difference between the construction shown in Figure 4 and that shown in Figure 1 is that instead of having the longitudinal wires 22a in Figure 4 provided with coils at their ends embracing the transverse tubular rods l8, clips 24 are use-d, these clips being formed of sheet metal bent around to embrace the rod [8 and then bent outward to form the two confronting and lar rods l8 and that as in Figure 1, the number of longitudinal wires and the position of the longitudinal wires may be readily varied. By weaving the longitudinal wires or the transverse wires,.shifting of the longitudinal wires or rather the clips thereof upon the rods I8 is positively prevented.

In Figure 6 I have illustrated diagrammatically how conveyers constructed in accordance with my invention may be disposed within a drying chamber. The drying chamber is designated A. An upper endless conveyer B formed as described and illustrated in Figures 1 and 4 carries the longitudinally extending hanks or skeins S into the drying chamber A and then discharges onto a lower endless conveyer C which in turn discharges onto a third endless conveyer D, these conveyers all being constructed in accordance with my invention. The conveyer D finally discharges the hanks from the drier while the conveyer B is connected to a feeding belt conveyer designated E. F designates a feeding conveyer which may be used for feeding to the one apron conveyer B, if it be not desired to pass the material over a number of conveyers and retain it in the drier for a length of time. Obviously any number of these conveyers may be used. ,An endless conveyer G may also be used above the upper flight of the conveyer B for the purpose of holding the material in place and preventing it being blown off of this conveyer. This same function is performed by the lower flights of the conveyer B with relation to the conveyer C and the lower flight of the conveyer C with relation to the upper flight of the conveyer D. The conveyer construction as I have described is intended, of course, to pass over the usual sprocket wheels and may be driven from any suitable source of power.

In Figure '7 I have illustrated a slight modification of the structure shown in Figure 1 in which the coils 23 are reversed relative to each other. These coils in Figure 7 are designated 23a and loosely embrace the members I 8. Both in the structure shown in Figure 1 and that shown in Figure 7, the coils may be 'held from any longitudinal movement on the tubular rods l8 by raising a burr 26 on the rods 18 by means of a square edged chisel.

I claim:-

1. An endless conveyer including parallel longitudinally extending links, pivot pins connecting said links and extending inward beyond the links, transverse rods, into the ends of which the pivot pins extend, transverse wires operatively connected to the links, longitudinal wires supporting the transverse wires, the longitudinal wires having eyes at their ends, and clips loosely embracing the transverse rods and with which the ends of the longitudinal wires are engaged.

2. An endless conveyer including parallel longitudinally extending links, pivot pins connecting said links and extending inward beyond the links, transverse rods into the ends of which the pivot pins extend, the links having inwardly extending perforated flanges, transverse wires having their ends engaged through certain of the perforations of said flanges, and longitudinal wires having means at their ends loosely embracing the transverse rods and oscillatable thereon, the longitudinal wires extending alternately over and under the longitudinal wires.

3. In an endless conveyer, parallel longitudinally extending links having laterally projecting flanges, the flanges having a plurality of apertures extending in a longitudinal series, pivot pins connecting said links, transverse rods engaged with the pivot pins at their ends, independent wires extending longitudinally between the rods, each wire at its ends having rod engaging means entirely surrounding loosely said rods, the wires being individually adjustable along the rods and independently removable from engagement therewith, and transverse wires independent of each other and each detachably engaged in a selected aperture in the flanges, one set of wires supporting the other set but the wires of either set being independently removable without displacement of the other set of wires.

JAMES A. HOGG.

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