US1631095A - Spool-supporting means for tube frames - Google Patents

Description

May 31, 1927.

E.'F. HATHAWAY SPOOL SUPPORTING MEANS FOR TUBE FRAMES Filed May 6. 1926 I 2 Sheets-Sheet 1 MTTQRNEY May 31,1927; 1,631,095 E. F. HATHAWAY SPOOL SUPPORTING MEANS FOR TUBE FRAMES Filed May 6. 1926 2 Sheets-Sheet 2 Patented May 31, 1927.

UNITED STAT-ES PATENT/OFFICE.

EDGAR r. nArnAWAY, or WELLESLEY, MASSACHUSETTS, AS SIGNO B T0 SHAWMUT ENGINEERING COMPANY, OF BOSTON, MASSACHUSETTS, CORPORATION OF MAS SACHUSETTS.

V SPOOL-SUPPORTING MEANS FOR TUBE FRAMES.

Application filed May 6,

This invention relates to tube frames such as are used in tuft weaving, of fabrics like Axminster carpets, and is intended to provide means for supporting the yarn-spools of such frames for wide looms so as to secure equal or uniform rotation of the plural spools, while making provision for easy and rapid its bearing supports.

In the case of tube frames for wide or seamless Axminster rugs, it is Customary to employ two or more yarn spools co-axially arranged end to end, with provision for interlocking their adjacent ends to produce uniform or equal rotation of the spools, but usually the interlocked ends are made as male and female membersso that flexibility of arrangement is limited by reason of the fact that the spools are not universally interchangeable. i

It is the object of the present invention to provide a very simple construction and which, at the same time, facilitates speed in handling, produces equal rotation of the spools and makes it possible ,to' interlockinglyrconnect any spool in storage withany other spools when it becomes necessary to reverse or interchange the spools forany reason.

\Vith these and other objects in view the invention comprises, generally speaking, an

intermediate; spool-supporting" bracket in which is independently mounted a rotatable coupling member constructed to have quick detachable interlocking connection with the adjacent ends of both yarn-spools between which it is located for the purpose-of I'O-' tatably supporting both spools and couplingthem together to secure uniform or equal rotation thereof.

This and other features ofthe invention will be more particularly described in" the following specification and will be defined in the claims hereto annexed.

In the accompanying drawings I have illustrated a cheap and convenient construction and arrangement embodying the prin'- ciples of this invention, in which:

Figure 1 is a front elevation, partly "in section, showing a complete tube frame with interlocked portions broken away to show:

removal of either spool section from.

her during its rotation.

1926, Serial No. 107,068.

the interior construction to which the inven- "ing rotation of the spool and preventing endwise displacement of the coupling mem- Figure 7 "s an end elevation, partly in cross section, of the construction of coupling mengber and bearing bracket shown in Fig ure' V F gure 8 is a vertical section showin a mod fied construction and arrangement of the middle bearing member with adjacen spool ends supported thereon.

F gure 9 is a side elevation of the upper portion of one of the middle bearing brackets 1llustr'ated in Figure 8, with the couplin spline removed. a V b F gure 10 is a detailshowing, in cross section, the coupling member and the journal member of the spool splined together for equal rotation.

Figure 11 is a detail similar to Figure 8 showing one of thespools tilted and pushed inwardly to permit removal.

The construction embodying the-principles of this invention is applicable in a variety of ways to accomplish different objects for which the invention is intended. It provides a construction facilitating the removal of the yarn spools from the tube-frame, as well as a construction for coupling adjacent yarn-spools together to secure equal rotation thereof in Winding the yarn, and it also permits the use of a universal spool, that is, one "that can be used not only in different positions in the same tube frame and that is reversible end for end therein,

but also one. that may be used in a single spool tubeframe where, ordinarily, a spool with simple bearing pintle journals is em; ployed.

In the form of the invention shown in Figures 1 to 6 the main parts of the tube frame, except the middle bearing construction, embrace the usual longitudinal carrier bar 1-, to which are secured therow of spaced tuft-tubes 2 for delivering the yarn to the fabrlc bOlIl woven end han ers embracin b 7 c t) a chain-penetrating arm 3', a hook-latch 41 a spool-bearing bracket or car 5, in. this case with an open bearing for the'sp'ool', and associated therewith a journal-retaining arm or latch 6 which normally overhangs the spool journal on. the open side of the bearing and is pressed into operative position by an expansion spring 7, which is "lllllBlPOSQCl between the keeper 6 and the tween adjacent ends of adjacent spools. I

In the present case I have shown a yarnspool whose barrel 1.1 is inthe form of a metallic tube to which, are secured end heads.

12 whose central portion is depressed toform a hollow boss 1.2 fitting inside the barrel to which the barrel is secured. Centrally of the connecting bosses 12 -are secured, by riveting or: otherwise, suitable stub shafts or pintle journals 13, all of which, in this, case, are of substantially the same dimensions'to allow the spool to be reversed end for end to correspondingly change the pattern or to be placed in any desired order of arrangement in a multiple spool tube-frame.

The central bearing bracket 8, in thiscase, comprises two sheet metal arms riveted or spot-welded together, the upper portion of said bracket members being provided'with aligned bearing openings whose edges, in this. case, are turned outwardly to form annular bearing flanges 8. Attheir lower ends these bracket. plates or members are severed to permit, the formation of an eye to receive a bearing rod or, pintle;.8-,, a portion of the lowerends being: continued down. to form.projectingheels 8", engaged with aflat or leaf. spring 9'project1ng across an opening in its support. 10,, and held in place by headed screws 10, the further'details of which, need' not be explained as.

details of this construction form the subject matter of another application. Thls is a construction which permits the middle bearing bracket to be swung to either side of its normal position to facilitate the removal of the spool journal, while being normally held by spring tension in its vertical or. upright position.

Mounted inside the bearing opening of the upright stand 8 'is a relativelyshort rotatable bearing member-15", whoseouter ends,

in this form, project inside the hollow or cupped ends of the heads 12 of the spools and att'ord a bearing support for the ad jaccnt cndsof the spools. This bearing and coupling memberis centrally bored to allow In this case the coupling member com I prises a longitudinal pin 17 driven through a small eccentrically located bore in the ,member 15, withits ends projecting beyond theends of the member 15 to penetrate oppositely, aligned holes 12 punched in the offset or cupped portion of each head, there being preferably an annular series ofsuch holes to permit circumferential adjustment of one spool in relation to the 'other.

It will be observed that the bearinglopening for the reception of the rotatabletoupling member 15 is' closed and that the coupling member itself is permanently mounted -in its bearing bracket but is detachably connected or engaged, at its opposite ends, with the adjacent endsof the yarn-spools. This construction permits the removal of either yarn-spool from the middle bearing without depriving the othersp'ool of its bearing support. a

To remove either of the spools shown, the operator releases the keeper 6 in order to lift the journal out'ot'the bearing bracket 5,.so as to permit withdrawal. of the spool in somewhat tilted or oblique position endwise from its interior bearing member 15.

The circular arrangement of" locking holes 12.! permitsfany'desired degree of rotative adjustment between the two spools to bring their tree yarn ends in to a common line orv position. V

In Figures no 10 is shown another modification of the middle bearing bracket in which the rotatable bearing member. 25 is made to permit axial displacement of the rotatable bearing-member 25 in its supporting bracket 18. In this case the rotat-T able bearing member 25 isprot ided'with a" medial annular circumferential groove 25 1n which is seated a split ring 27 of wire which normally contracts into the groove but is so dimensioned as to projectpabout;

half its diameter beyond the circumferential surface of the member 25. The plates which form the bracket 18 are, in all respects, similar to the plates 8, except that-the extended flanges 8 may be omitted and the two plates,

adjacent to the bearing orifice, are spread apart to form an annular recess or channel of sufficient depth to allow the wire spring 27 to expand entirely into it. The annular the member25 may be moved endwise to facilitate disengagement and removal of the spool. This action is particularly advantageous where the spools, as is often the case, are provided with circumferential outwardly projecting flanges 12 The method of'splining or coupling the two spools together in this form of the in.- vention differs in'detail from that previously described. In this case the central bore of the member 25 .is longitudinally slotted to form a keyway in which is placed a spline or key 26, adapted to project into notches 18 of the journal members.

It will be understood that in both cases the coupling spline maybe driven endwise from the rotatable coupling member-to allow independent rotation of the spools because,.

in some cases, mills prefer to dispense with a positive coupling connection-and allow the spools to rotate independently of one another. a common bearing member forthe two spools and is endwise displace-able to facilitate the removal of either spool. The spline can be readily inserted at any time to couple the spools rotatably together.

In Figures 6 and 7, I have shown construction of middle bearing which is adapted also to provide a braking or retarding action to frictionally retard the spools and hold them against external rotation. Brake devices for this purpose have been commonly employed to press against the outer heads of the spools, but this construction is easily applicable to the middle bearings as well. In this case the rotatable bearing member 21 is mounted in an upright stand 8, similar to that shown in Figure 1, but this stand.

has its flanges 8 out through for a part of their circumference to allow the insertion of arcuate brake shoes 23, which may be made of raw hide, fibre or other suitable material, and these arcuate shoes are kept in place and pressed against the rotary bear- In that case the member25 forms ing member 21 by means of a circumferential split ring 24, whichis seated in external or circumferential grooves, formed in said shoes, :to properly position themv and, by their contractile force, exert the desired degree of pressure upon the rotating member 21. In this case the rotatable bearing member 21 is shown as provided with annular grooves 21 of approximately V shape, into which project the wedge shaped-brake shoes 23. This-form increases the braking action and at the same time permits the brake shoes, with their encircling expansible springs, to act as an expansible key or spline to allow endwise displacement of the bearing member 21, by pressure on one end thereof.

Coupling pins 22, driven through small bores in the member 21 serve, in this particular form, not only to .couple the two spools together to rotate in unison, but also form the actual support for the spool membars 20. In this case I have shown the ordinaryr wooden spool 20 with its wooden head or flange 20, instead of the metallic spool previously described. The end faces of these Pspools are provided with an annular series of bored openings 20 to receive the coupling pins 22. In this case, of course, removal of the coupling pins would deprive the'spools of their rotatable support, in

which respect this form differs from the other forms above described, but in all the forms shown and described the rotatable bearing member, mounted in the middle bracket or stand, is capable of affording both a bearing support for the two spools as well as a coupling conection between them.

What I claim is: y 7

1. In a tube frame for tuftiweaving, the combination with a longitudinal carrier-bar having spool-bearing brackets at its ends,of a .medial bearing bracket formed with a closed annular bearing, a. rotatable coupling meuiber mounted in said bearing and having releasable coupling connection at both ends with the adjacent ends of adjacent yarn spools to insure equal rotation of both spools while allowing either spool to be removed without depriving the other of its bearing support.

2. In a. tube frame for tuft weaving, the combination with. a longitudinal carrier-bar having spool-bearing brackets at its ends, a rotatably supported spool-coupling member interposed between adjacent ends of two spools and having releasable coupling engagement with both spools, said coupling member being movable in a direction lengthwise of the spools to facilitate the removal of spools from the tube frame.

3. In a tube frame for tuft weaving, the combination with a longitudinal carrier-bar having spool-bearing brackets at its ends, one or more middle bearing brackets interposed between two spools, a rotatable coupling member mounted in said middle bearing bracket and having detachable coupling connection with each of said spools and means for engaging the coupling member with its bracket to normally prevent axial displacement thereof in the bracket during rotation.

4. A middle bearing bracket for tubelrame yarn spools embracing in combination an upright stand adapted to be mounted on a tube-frame carrier-bar so as to be inter-- posed between two aligned spools, a rotatable coupling member mounted in a bearing- 0 )enin formed therein and having at both ends,. means adapted to form detachable coupling engagement with two adjacent spools to secure equal'rotation oi both spools for the delivery of yarn.

5. A spool-bearing bracket for a tube frame embracing an upright bearing; stand, a rotatable member mounted therein: and

provided with means for rotat'evely couplingit with the adjacent ends of spools that-are coaxially disposed on opposite sides of the stand, said member being axially bored for the reception of adjacent spool journals, thereby permitting reversal of either spool end for end.

(ii A spool-bearing bracket for a tube frame-embracing in its construction an upright bearing stand adapted to beinterposed frame embracing an upright stand provided with an annular bearing, a spool-coupling member rotatably' mounted therein and formed to have coupling connection with the adjacent ends of coaxially arranged spools,-

means for normally retainingsaid' co'npling member against axial displacement when rotating, said means embracing circumt'en entialoutwardly expansible means engaging an annular groove formed in the circuma" terential surface of the coupling member.

8. A spool-supportingbracketfor a tube frame embracing an upright stand provided with a: bearing opening a spool-bearing member rotatably mounted in said bearing.

opening and formed to project .in part into recesses in the ends of aligned yarn spools and to receive within itself the projecting journals of such yarn spools.

9. In a tube frame the combinationwith a carrier-bar having at its ends spool-bearing brackets and one or more middle brackets, a plurality of yarn spools mounted 111- said brackets end to end, each yarn spool having rotatein unison. y

10. A spool-bearing bracket embracing an upright stand formed with a flanged bear-' ing, a spool-supporting member rotatably mounted therein and affordingcoupling connection between two adjacent spools, radially con'tract-ible brake means mounted on said stand to have frictional engagement.

with said: bearing member to ,frictionallyretard rotation of the spools.

11. A middle spool bearing stand. for tube frame-adapted to be interposed'between the adjacent heads of two spools and afford support for the spools, spooleretarding means embracing radially movable brake shoes, and a contractible spring exerting inward pressure on said brake shoes to retard rotation'of the spools.

In witness whereof, I have subscribed the above specification;

EDGAR F. HATHAWAY.

journals of like construction at both ends; and means rotatably supporting t-liemiddle bearings to detachably couple together 'the' adjacent endsot' the spools to cause themto.

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