US1903506A - Wire guide - Google Patents

Description

April H. R. FARNSWORTH WIRE GUIDE Filed Nov. 22, 1928 2 Sheets-Sheet l flg'l INVENTOR lav $4M f /5 ATTORNEY April 11, 1933- H. R. FARNSWORTH 1,903,506

WIRE GUIDE Filed. Nov. 22, 1928 2 SheetsShe,et 2

k lNVENTOlL J W. %1/ Maw A ATTOR N EY Patented Apr. 11 1 933 umrso sra'ras HILAND R. FARNSWORTH, S ANDUSKY, OHIO, ASSIGNOR TO THE & TEXTILE r MACHINERY COMPANY, OF .SANDUSKY, OHIO WIRE GUIDE Application filed November 22, 1928. Serial No. 321,170.

. The invention to be hereinafter described relates to wire guides for paper making ma.- chines.

'While the present invention has been designed with particular thought of its application to machines in which the wire travels vertically or in a place at a considerable angle to the vertical in contradistinction to the standard machine now in use and in which the wire travels in aplane approximating the horizontal, it will be readily understood that it may also be applied to and used on such standard machines. And it is not my intention to limit the application, of the invention to vertical wire type.

A continual and very serious trouble with paper making machines isthe tendency of wires to cra-wl'toward one side or the other of the machine. 'A very slight lateral travel brings the edge of the wire into'rubbing' contact With stationary parts, carries a part of the wire and its paper web outside of or beyond the effective suction area of the couch roll, delivers the sheet more toward one side of the felt than it should, and has various other objections. As soon as the edge, by rubbing, gets rough there area number of other serious Well known objections which arise.

There are several types of wire guides, in general use at present and giving a certain degree of satisfaction. These guides, however, are, naturally, designed for use on the standard horizontal-wire type of machine and are incapable of use on the vertical-wire type. Their very construction and mode of operation make it impossible to apply them to such different type of machine.

The main objects of the present invention are to provide a wireguide particularly applicable to the vertical-wire type of paper making machine; and a guide of simple, eflicient and compact construction, havingj-the least number of partspracticable and as nearly absolutely reliable as possible under any and all ave-rage working conditions at all likely to be encountered.

A further object is to provide acguide which may be operated both manually and automatically and in either manner independently of the other, as may be desired.

forming part of the present application.

Throughout the several figures of thedrawn-gs like reference charaotersrdesignate same parts in the several different views.

In the drawings F'g. l is a diagrammatic of one wire of .a vertical-wire machine with the invention applied; I Fig. 2 is an enlarged top plan view otvqne end of theguide roll, its'motinting,,;and the invention applied; and 1 V Fig. 3 is an end view otFig. 2,3showingithe invention in elevation, partly broken-away.

The guide roll, as its namede-notes, is intended todirect or guide the wirein the right or true pa-th-to make it run accurately in the machine, as it. should. Consequently,- there must be means for controlling its op erat-ion or for regulating its efiect. It is" well known that a revolving-cylindrical roll Will have no direction-changing effect on the felt, sheet, wire, or like member passing over andbearing on itssurf-ace, as long asthe :axis of rotation of the .roll is at right angles to the direction of travel of such member. .It is also well known that as soon as theaxis :is

inclined even very slightly, relatively to the perpendicular, there will be kanimmediate pronounced lateral teedingaction by 'theroll,

very much in the nature of the ieedingaction.

of a spiral conveyor. Or, as it is otten :put, the wire ;will crawl in the direction: of'lthe side of the machine toward which the guide roll is inclined. And'the greater theinclime of the guide roll the kgreater and more pro nouncedfthe'erawl. Ands ithaSbecome:customary, in :the horizontalswlire type of ma chine, to regulate the wire, inits lateral crawl,

by moving the :guide .ndll-inclining it JIIIO'I'Q or less, relatively to the perpendicular 'to the path of travel of the making wire. In fast running machines such as :are universally used today, .an almost infinitesimal lateral movement :in one entire length ra making wire, is .so rapidly multiplied athatthextotal permissible lateral crawl is so quicklyexceeded that the wire is injured or other serious front elevation damage done before it can be stopped. In various attempts to overcome these ob ect1ons, on the horizontal-wire type machine, different automatic means have been devised for inclining the axis of the roll. Those at present in most general use are automatic and actuated by the wire. They are all applied to and operable only with the horizontal-wire type of machine.

The present invention on the other hand is designed, constructed and operable for and with the vertically travelling wire of a vertical-wiretype machine, such as is not in commercial use at the present time.

Referring to the drawings in detail 1 indicates'theguide roll having one end mounted ina relatively stationary hearing but with sufficient play to permit the roll to be inclined in one direction on the other for guiding'ipurposes, all as in well known practice. Itis, of course, driven by the engaging making wire 2 in usual and well known manner, as in the horizontal-wire type machine, as will be evident on reference to Figs. 1 and 2. Theopposite end of roll 1 is journaled in one end of a plate, bar or carrying arm 8. The opposite end of arm 3 is keyed, splined, or otherwise suitably rigidly remo-vably fastened to a tubular shaft 1 to rotate or rock therewith 'but' not relatively thereto. This shaft is mounted for freerotation in suitable. brackets on the machine frame and at a suitable point slightly spaced from arm 3 has secured thereto in the same manner as the connection between shaft 4 and arm '3, one end of the headof a T-lever arm 5 which arm extends in a direction opposite to-arm 3. Preferably arm 5 is formed as T-shaped, for purposes tobe later disclosed. It will be seen that the arms 3 and5 and tubular shaft 4L constitute an elbow'lever in one end of which is revolubly mounted the movable end of'the guide roll, the fulcrum being shaft 1. To counterbalance the weight of the roll endand maintain it in free running operative posit-ion a suitable weight 6 is provided. This weight is adjustably mounted on the arm in any usual and well known manner, which need not be further'disclosed.

The roll being in continual running contact with the making wire will be driven thereby continually and at approximately the same rate as said wire. This continual rotation is utilized in operating the wire guide of this invention, as will be understood by those familiar with the standard wire guides now in general use on the horizontal-wire type of machine. In this invention, a sprocket wheel 7-- is made fast on the end of the spindle of r0111 and through a sprocket chain 8 drives a second sprocket wheel 9 which is keyed to the stub shaft 4', journale'd in a tubular shaft 4. Sprocket 9 in driving shaft 4 also drives an eccentric which is made fast thereto and which carries a smallwrist pin lOon which is j ournaled the upper end or stem of afork 11 which carries oppositely acting dogs or pawls adapted to selectively engage cooperating oppositely disposed ratchets on the ratchet disc 12 which is fixed to one end of a rod13 which. journaled in the machine frame and threaded through the lower 'or free end 5 of the T-lever arm. A suitable stop nut on collar 14 fixed to rod 13 keeps it'in place in the frame. As sprocket 9 is kept in continual rotation by chain 8 the Y-fork will be in continual reciprocation. As long as neither dog of the fork engages the ratchet disc the rod 13will remain stationary and the lever 3, 1, 5, 5 will not actuate the guide roll But as soon as either dog does so engage its cooperating ratchet the rod and its connections will be actuated and the free end of the guide roll 1 will be actuated to change the inclination to correct the crawlofthe wire.

To effect engagement of the actuating pawls a well known type of wire guide mechanism is combined with the construction hereinbefore described. This well known mechanism will be set forth only briefly, as its construction and operation are well known in its use on the standard horizontal-wire machines. It is what is known in the art as a one-palm guide, that term designating a guide in which a single wire engaging means controls the guide in contradistinction to those guides in which two engaging means operate from opposite sides; Thus, a single palm or plate 15 is carried on the upper end of a bar 16 which isfiexibly and yieldingly' held in op erative Contact by a coil spring 17. The palm is adapted when in operative position, to bear very lightly onthe edge of the making wire and to follow any lateral or crawlingmovement of it. This well known guide mechanism is installed, of course, with the wire and guide roll in their respective correct operative positions, the guide roll having its longitudinal axis at right angles to the length 7 of the wire. The palm will then just contact withthe wire edge and the arm carrying it will be substantially at right angles to the plane of the making wire. Through a rock able crank shaft 19, the arm or bar 16 operates crank arm'20 at the opposite'end of 19. This crank is connected by a link rod 21 to one branch of the Y or forkll. So, it will be evident that this train of connections will throw one or the other dog into engagement with its respective ratchet according to the direction of lateral travel of the wire but will maintain them in neutral or inoperative position as long as the wire'is in proper position. r L

From the above it will be seen as soon as the wire startsv to crawl from its true and in the right direction to effect that inclination of the guide roll 1 which will return the wire or move it in the opposite direction to offset the previous crawl.

The outer free end of the rod'13 is pr0- vided with a hand wheel or like manual operation means 22 so that the roll 1 may be inclined by hand instead of automatically, if desired. It is only necessary to move "the dogs to inoperative position and then operate rod 13 by hand wheel 22 until the roll 1 has been moved to the position to return the wire, as will be readily understood.

The slight arcuate movement of the roll end will notin any practical sense affect contact with the wire either as to driving the roll or as to guiding the wire. H

Many changes may be made in the construction, arrangement and disposition of the various parts of theinvention within the scope of the appended claims without in any degree departing from the field of the invention and it is meant to include all such within this application wherein only a single illustrative construction has been disclosedfor purposes of explanation.

Having described my invention, what I claim and desire to protect by Letters Patent is 1. A wire guide for paper machines comprising an adjustably movable guide roll over which a wire travels, a stationary frame, a movable support for an end of said roll comprising a lever arm pivotally supported upon said stationary frame, and means driven by the roll for pivotally moving said lever arm to change the axial inclination of the roll with respect to the direction of travel of the wire. 7

2. A wire guide for paper machines comprising a roll over which a wire travels and is adapted to be engaged thereby in surface contact, a stationary frame, a movable support for an end of said roll comprising a lever arm pivotally supported on said stationary frame, means driven from said roll for pivotally moving the lever arm to change the axial inclination of the roll with respect to the direction of travel of the wire, and means responsive to lateral movement of the wire for actuating said lever moving means.

3. A wire guide for paper machines comprising a roll over which a wire travels, a stationary frame, a movable support for an end of said roll comprising a lever arm pivotally supported upon saidstationary frame, a counter weight on said lever arm positioned from the lever fulcrum in a direction opposite to the point of attachment of the roll, and means driven by the wire for pivotally moving said lever arm to change the axial inclination of the roll with respect to the direction of travel of the wire.

4. A wire guide for paper machines comprising a roll over which a wire travels, a

stationary frame, a movable support for an end. of said roll comprising a lever arm piw otally supported upon said stationary frame,

means driven from the wire and automatically actu'ated upon lateral movement of the wire for pivotally moving said lever arm, and

manual means'operable independently of said" automatically actuated means moving the lever arm.

5. A wire guide for papermachines-comprising a rollover which a wire travels, a sta tionary frame, a movable support for an end of said roll comprising a lever arm pivotally supported upon said stationary frame, means for pivotally moving the supporting lever upon lateral movement of the wire,- said means comprising a pawl mechanism driven from the roll, a ratchet mechanism operable for pivotally by the pawl mechanism, means connecting the lever to the ratchet mechanism for movement thereof upon movement of the ratchet mechanism, and means in contacting engagement with the wire to move the pawl mechanism into operating engagement with the ratchet mechanism. 7 r

6.. A wire guide for paper machines comprising a roll over which a wire travels, 2,

end of said roll comprising a lever arm pivotally supported on said stationary frame upon an axis parallel to the normal position of the roll axis, a mechanism operable upon lateral movement of the wire to pivotally move the roll supporting lever, said mechanism comprising a rotatable member posi. tioned coaxially with the lever pivot, and

stationary frame, a movable support for an means for driving said rotatable member A from the roll.

7 A wire'guide for paper machines comprising a roll over which a wire travels, a stationary frame, a movable support at an end of said roll comprising a lever arm pivotally supported upon said stationary frame, a counter weight on said lever arm positioned from the lever fulcrum in a direction opposite to the point of attachment of the roll, means for pivotally moving the supporting lever upon lateral movement of the wire, said means comprising a pawl mechanism driven by the roll, a ratchet mechanism operable bymoving said roll support in accordance with lateral movement of the wire, said mechanism comprlsing a rotatable member mounted coaxially with the centerof curvature of the path of movement of the roll support, and means for driving said rotatablemember by rotation of said roll.

9. A wire guide for paper machines comprising an adjustably movable guide roll over which a wiretravels, a support for an end of said roll movable in a curved path defined as an arc of a circle, mechanism for moving saidroll support in accordance with lateral movement of the wire, said mechanlsm com prising-a rotatable member mounted coaxially with the center of curvature of the path of movement of the roll support, means for driving said rotatable member by rotation of said roll, and means on said support for countcrbalancing the weight of the roll sustained by said support. I r In testimony whereof I afiix my signature.

HILAND R. FARNSWORTH.

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