US408758A - Island - Google Patents

Description

(No Model.)

J. J. SOHOLFIELD. DEVICE FOR GUIDING THE EDGES 0F FABRICS.

Patented Aug. 13, 1889.

- 7 Manfor \ihiiii'uiiii iiilliilii-u n PETERS. PhuloLilhographur. Wnhinglnn, D. c.

I from the proper guiding-line.

' UNITED STATES PATENT OFFICE.

JOSEPH J. SCHOLFIELD, OF PROVIDENCE, RI-IODE ISLAND.

DEVICE FOR GUIDING THE EDGES OF FABRICS.

SPECIFICATION forming part of Letters Patent No. 408,758, dated August 13, 1889.

' Application filed April 12, 1889. Serial No. 307,038- (No model.)

To all whom it may concern:

Be it known that I, JOSEPH J. SCHOLFIELD, a citizen of the United States, and a resident of Providence, in the State of Rhode Island, have invented a new and useful Improvement in Devices for Guiding theEdges of Fabrics to Cloth-Finishing Machines, of which the following is a specification.

The object of my invention is to provide an improved mechanism for guiding the edges of the web in true lines onto the chain-hooks of tentering and drying machines, or to the feeding-rolls of various other cloth-finishing machines; and it consists in the combination, with a guide-roller held upon a pivoted head or frame at that side of the axis of the pivot which is toward the outgoing portion of the Web, of a detector and a mechanical movement adapted to cause the proper angular movement of the roller-holding head or frame to correct the variation of the running edge of the web from the true guiding-line, and in other details of the machine, as hereinafter fully set forth.

Figure l is a plan view of my improved clothguiding machine; Fig. 2 is an elevation taken from that side of the machine which is toward the web. Fig. 3 is a vertical section taken in the line was of Fig. 1. *Fig. at is an elevation taken from the delivering side of the machine. Fig. 5 is a viewof certain parts, taken from the plane as a: of Fig. 4. Fig. 6 is a side elevation of the detector for directing the powerdispensing-ratchet movement in one direction to change the position of the guide roller. Fig. 7 is a view of the same, and showing a section taken in the line 00 9:, Fig.6. Fig. 8 is a side elevation of the detector employed to direct the power-dispensing movement in the opposite direction to that produced by the detector shown in Fig. 6. Fig. 9 is a view of the same, and showing a section taken in the line a; as, Fig. 8'. Fig. 10 is a side elevation of a single detector which is adapted to cause the movement of the power-dispensing mechanism in either direction, according to the movement of the running edge of the web Fig. 11 isan enlarged top view and an end view of the notched bar which engages with the detector,

showing the opposite arrangement of the notches upon the edges of the bar.

In the accompanying drawings, A represents the bed-plate of the machine. B is an upwardly-projecting hub,within the cavity of which is pivoted the roller-temple C, which consists of the pivoted head 0 and the guideroller at, having its periphery set-with spurs, the said roller being loosely held for rotation uponthe screw-stud b, which is secured to the head 0 upon that side of the pivot-stem e which is toward the delivering-point for the Web to the cloth-finishing machine, the said .head being also provided with the guide-fingers d (1, arranged upon the side of the guide-roller a which is toward the incoming web, the guide-finger (Z being made longer than the finger d and preferably turned upward at its outer end, the said guide-wires serving to guide the edge of the web properly to the guide-roller a, and the angular movement of the guide-roller a, imparted by means of the pivotal movement of the head 0 in either direction, will serve to cause a corresponding change of direction in the running edge of the web.

To the pivot-stem e is firmly secured the segment-gear D, which engages with the rackpiece E, the said rack-piece being frictionally heldin the groove f of the reciprocated slide F by means oi the screw g, Washer h, and spiral spring 2', the said-screw being made to pass through the slot j in the said slide. To the upper side of the shank portion of the rack-piece is secured a ratchet member formed by the steel bar G, provided on its opposite sides with notches n, which at the opposite sides of the said bar are inclined in opposite directions, as shown in Fig. 11, thus forming a ratchet member of the rack-piece. Within the bearing-hub in, formed upon a projection of the base-plate A, is placed the drivingshaft H, upon one end of which is secured the driving-pulley I, and at the opposite end of the said shaft is placed the crank-pin Z, from 95 which operative connection is made with the slide F by means of the connecting-rod m, the said slide being held for reciprocation upon the guide-rod J.

Upon the fixed rod K, which is supported horizontally by means of the standards at and s, is attached the eylindrically-curved plate L, at the base of which and loosely upon the said rod are arranged the companion detectors p and g, which are preferably constructed as shown in Figs. 6 and 8, being each provided with spurs, as r r, for frictional engagement with the edge of the fabric, and with a radial beveled edge s,which serves to engage with the correspondingly beveled notches in the edge of the bar G.

The spurs 'r 1' are arranged to project slightly above the line of the surface of the circular plate L, the said circular plate operating to support and guide the edge of the web to proper engagement with the said spurs of the detectors, and being secured to the rod K by means of the hub d and screw 1). The detector p is made nearly semicircular in form, and is thus ovcrbalanced at one side, so that the beveled edge 8 will fall by gravity into engagement with the notches n upon the edge t of the bar G; and the detector q is overbalanced at its upper end, so that the force of gravity will cause the beveled edge 8' of the same to be thrown away from the notches n of the edge u of the said bar G, as shown in Fig. 3, the upper portion of the said detector q being concealed by the intervening detector 1), and the gravitating movement of the detector (1 may be limited by the edge 8, which strikes against the edge 15 of the bar G, the said edge 8" of the detectorq being so rounded as not to be capable of engagement with the notches of the said bar, the two plates 19 and q being also connected to each other by means of a pin 0 and slot 1), which will permit a certain movement of the said plates relatively to each other.

At the upper end of the standard n is secured the bar o by means of the screws 10 w, and at one end of the bare is placed the screw-stud 00, upon which is placed the looselyrevolving roller a, which is set with spurs, as in the roller a.

Upon the screw-stud d", secured to the bar 12 at the opposite side of the cylindricallyformed plate L, is placed the loosely-revolving roller 61-, which is also preferably set with spurs, as in the case of the rollers a a, and at the extremity of the bar 1; is secured the fixed supplementary guide M, from which the edge of the web is delivered to the clothfinishing machine.

The guide M is constructed with a fixed lower jaw f and a weighted upper jaw held loosely upon the screw-studs 1' 4?, which screw into the lower jaw and pass through pressure of the upper jaw and be prevented from curling over at contact with the sides of the screw-studs.

\Vhen the edge of the web is running through the machine, as shown by the broken line j j, touching the spurs 0* upon the detector-plate 19 only, and not the spurs r of the detector-plate q, then the inclined edge 8 of the detector-plate p, which is adapted for e11- gagement with the notches of the edge t of the bar G, will be carried by the frictional action of the forwardly-drawn edge of the said web away from the said notches, and the spurs r of the detector-plate q, being unaeted upon by the said edge of the web, the said detectorplate q will be held by gravity away from 011- gagement with the notches of the edge u of the said bar G, so that in this case the edge of the web would be running in the proper guiding-line, and no action of the power-dispensing mechanism will be produced to act upon the pivoted head 0; but in case the edge of the web should run inwardly from contact with the spurs 7", then the force of gravity, acting upon the detector-plate 19, will cause the beveled edge 5 of the said plate to drop into contact with the notches of the bar G, which bar partakes of the reciprocating movement of the slide F and rack E, and when the said slide and bar are moving in one direction the detector-plate will stop the movement of the bar G with the slide F, and thus cause a changein the relative positions of the slide and bar for the space of one or more notches of the said bar, according to the relative length of the reciprocating stroke of the slide F, and upon the reverse movement of the slide F and bar G the inclined form of the notches of the said bar will permit the bar to slide over the inclined engaging edge of the detector-plate, and upon the succeeding reverse movement of the slide F and bar G the detector-plate will again engage with the notch of the bar G, and thus cause a still greater change in the relative positions of the said bar and slide, until the specific variation of the running edge of the web has been corrected, the changed position of the bar G and rack E with relation to the slide F serving to cause a corresponding variation in the angular position of the guide-roller a, which will tend to bring the edge of the Web back to the proper line; but in case the edge of the web should, instead of running inwardly from the proper line, extend outwardly, so as to engage with the spurs r of the detector-plate q, the action of the running edge of the web upon the said spurs will cause the inclined edge 8 of the detector plate q to be brought into engagement with the notches of the edge a of the bar G, which notches are oppositely inclined to those of the edge t of the said bar, so that upon such engagement the bar G will be caused to move in a reverse direction in the slide F, thus imparting a reverse angular movement to the roller a,

IIO

which movement will serve to bring the running edge of the web back to the proper line, in which both of the detector-plates are out of engagement with the notches of the bar G.

Instead of employing the two detectorplates, as above described, a single plate can be employed, which can be constructed as shown in Fig; 10, and in this case the action of the web upon the spurs 0" will cause the beveled edge 8 to engage with the notches of the edge u of the bar G, and upon the inward movement of the edge of the web away from contact with the spurs r of the detector-plate the said plate will turn by gravity, so that the beveled edge 8 will engage with the notches upon the edge tof the bar G to cause the movement of the bar in the opposite di rection to bring the running edge of the web back to the proper line but with the single,

detector-plate there will be no point of rest between the opposite points for movement, the detector-plate being in almost'constant engagement either upon one edge or other of the bar G.

The arrangement of the pivotally-supported roller a for endwise movement according to its distance from the pivot-stem 6 will serve to correct any specific variation of the running line of the edge of the web quicker than would be possible with the roller 60 when set radially from its pivoting-point, for the reason that,'while the angular variation of the i said roller will serve to gradually bring the running edge of the web back to the required line, the endwise movement of the said roller i will effect an instant adjustment of the same,

and the farther the roller a is set from its pivot-point the less will be the angular variamovement will be reached.

The outer guide-finger d is made longer than the adjacentinner guide-finger d, and is also provided with an upward and inward bend '1), which serves to hold the edge portion of the web inwardly to produce aslight lengthwise trough-fold in the same, which can be readily pulled out by-the action of the roller a, thus allowing the roller to draw the web outward from a comparatively loose and contracted condition. The edge of the Web is threaded under the guiderfinger d, over the guide-finger cl, and under the rollers a, a,

and a", as shown by the broken lines j j.

The outer detector-plate q is provided with the attached guide 15', which by projecting inward over the spurs 1' serves to hold the edge of the web in close contact with the said spurs,

so as to impart a sure movement to the detector.

The frictiOnally held oppositely-notched bar G and the reciprocating slide F, which holds the said bar, constitute the essential parts of a well-known mechanical movement for oppositely changing the direction of the transmission of motive power with a capability of variable action in either direction erating the gate of a water-wheel to regulate the speed of machinery, in which the motive power is variably dispensed to raiseand lower the gate.

I claim as my invention- 1. In a cloth-guiding machine, the combination, with the ratchet member adapted for reverse movement, the slide frictionally holding the same,-and reciprocating means therefor, which together constitute a power-dispensing mechanical movement, as set forth, of a detector the movement of which serves to cause the required movement of the ratchet member, a guide-roller held upon a pivoted heador frame atthat side of the axis'of the pivot :which is toward the outgoing portion of the web, and the pivoted head or frame supporting the guide-roller and geared with the ratchet member, whereby the guide-roller will have a greater or less endwise movement in the same direction. as that of the required movement of the edge of the web to correct a specific variation from thetrue line, substantially as described.

2. In acloth-guiding machine, the combination, with the ratchet member adapted for reverse movement, the slide frictionally holding the same, and reciprocating means therefor, which together constitute a power-dispensing mechanical movement, as set forth, of a detector the movement of which serves to cause the required movement of the ratchet member, a guide-roller held upon a pivoted head or frame at that side of the axis of the pivot which is toward the outgoing portion of the web, the pivoted head or frame supporting IIO the guide-roller and geared with the ratchet member, and the two guide-fingers at one side of the guide-roller, the outer being the longer, substantially as described.

3. In a cloth-guiding machine, the combination, with the ratchet member adapted for reverse movement, the slide frictionally holding the same, and reciprocating means therefor, which together constitute a power-dispensing mechanical movement, as set forth, of a detector the movement of which serves to cause the required movement of the ratchet member, a guide-roller held upon a pivoted head or frame at that side of the axis of the pivot which is toward the outgoing portion of the web, the pivoted head or frame supporting the guide-roller and geared with the ratchet member, the curved guide-plate for guiding the edges of the web to the detector, and the rollers at opposite sides of the curved guideplate, substantially as described.

4. In a cloth-guiding machine, the combination, with the ratchet member adapted for reverse movement, the slide frictionally holding the same, and reciprocating means therefor,

of the overbalaneed detector provided with a frictional engaging-surface, and an attached [0 guide for holding the edge of the Web against the said surface, substantially as described.

JOSEPH J. SCI-IOLFIELD. \Vitnesses:

SOCRATES SCHOLFIELD, HERBERT WILFoRD.

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