US1790160A - Cloth roll wind-up mechanism - Google Patents

Description

Jan. 27, 1931. r v. LINDSJO CLOTH ROLL WIND-UP MECHANISM Filed Oct. 21, 1929 km s nTor. Verner Lindsj o 51W ATTys.

Patented Jan. 27, 1931 UNITED- STATES PATENT OFFICE I 1 VERNER LINnsJo or HOPEDALE, MAssAcnUsErrs, AssIeNoR 'ro ,DRAPER conro- RATION,

CLOTH' ROLL wmnnr MECHANISM OF HOPEDALE, MASSACHUSETTS A CORPORATION OFMAINE Application sled; October 21, 1929. Seria1 No.4Q1,077.-

This invention relates to loomsjand par ticularly to the-mechanism employed in the loom ,to manipulate the cloth roll. [The finvention has for its general" objectto provide' a more convenient and flexible means to raise and lowerthe cloth roll and to adjust the tension of theyielding means moves thecloth rollinto position.

7 A further object of the invention is to provide a mechanism of; the character above described having a removable operating handle which when in operative positionw-ill. extend a convenient distance from the loom in order to be readily grasped by the operator.

"The object of the invention isfurther to provide means operable tolock the wind-up mechanism against rotation when the operating handle is removed, said means being which held'out of locking engagement the handle when in its operative position. Preferably,

such means will act automatically to lock the shaft against rotation upon removal of the handle. 7 I hese and other objects and features will morefully appear from the following de scription in connection with the drawings vand will be particularly pointed out .in the claims. i I In the drawings:

bodying the principles ofthe invention. a

Fig. 2 1s a transverse sectional view on line 22 Fig. v1.

Only those elements of the loom directly associated with the improvements herein presented are illustrated. It is considered unnecessary to further describe the loom since those skilled in the art will readily perceive the adaptation of the present improve 0 ments to the loom in general.- The present invention is particularly adapted to the type of loom in which the cloth roll is maintained in contact with the take-up roll and frictionally driven thereby and in which the cloth roll moves down as the cloth mass thereon increases in size. v

In the particular embodiment shown a take-up roll 1 is journalled in the loom frame in the usual or any convenient mannerand is driven in anysuitable way as by means of Fig. 1 is a front elevation of a loom emthe gear 2 mounted on theta-ke-up roll shaft.

Te gear 2 meshes with the usual (take-up gear train not shown. The cloth roll 3 is located. beneath the take-up roll and is supported in contact therewith the rack bars a {which are guided in the take-up -stands 5'and'6on either side oftheloom. The upper ends of-the rack bars are provided with hearings to receive the. journals 7 and 8 of the cloth roll.' The take-up stands are sec'uredat their lower ends to the'usual girt 9 extending across the loom between the loom sides 10 andll. The take-up stands 5 and 6 are secured at their upper ends tothe breast Y beam '12. A shaft 13 is journalled in the lower ends of the take-up stands. 5 and6 and has secured at each endthereof sprockets 14 and15 overwhich passrespectively sprocketchains 16 and 17.1 The chain .16 extends upwardly and embraces a sprocket 18 while the chain 17 drives a sprocket'l Gears 20 and 21 are secured to the sprockets 18 and 19 respectively with their axes in alinement. The sprocket 18 andthe gear 20 are. mounted for rotation upon a stud shaft 22 fixed in the take-up stand 5; .The other sprocket 19 with its gear'21 are rotatably V mounted on a stud shaft 23 fixed in the takeup stand 6. Thestud shafts 22 and 23 are so positioned thatthegears20 and 21 mesh with the rack barsft on either side of the loom. 1

Situated'intermediate of the sprockets 14; and 15 at the ends of the shaft 13 is aworm gear 24 loosely mounted on the shaft and to. which is secured one end of a helical spring 25 surrounding the shaft. The other end of the spring is secured to a collar 26 rigid with the shaft. Journalled in the cross girder is a wind-up shaft 27 extending transversely of the cloth roll and the-cross shaft 13. The windsup shaft. 27 has secured at. one end a worm 28 which engages and drives the shaft 27 is rotated thus rotating' the worm worm gear 24; To raise the cloth roll the spring 25. The tension ofithespring is transmitted through the collar. 26 to the shaft 13which is rotated thereby. The motion of the shaft is transmitted equally to the rack bars 4 through the sprocket and chain connections to the gears 20 and 21 meshing with the rack bars. The cloth roll is thus raised and maintained in parallel relation to the take-up roll.

By means of the mechanism above described the cloth roll can be raised or lowered and the tension in the spring may be varied at will. As the mass of cloth on the cloth roll is built up the rack bars are forced downwardly which results in rotating the shaft 13 to increase the tension in the spring since the gear 2 5i is held against irotation'byq engagement wlth the worm 28.

creased tension 1s deslrable' as it compensates This infor the increased weight of the roll ,asmore cloth is wound thereon andthus maintains a substantially uniform pressure of the cloth roll with the take-up roll. At all times during-the operation of the loomthere is a substantial torque tending. to rotate the gear 24. This torqueincreases asthe mass of cloth is built up and reaches its maximum when the cloth roll has received all that it tent and establishes a slow drive which if permitted .to act would eventually lower the cloth roll which obviously is an undesirable condition. p i I V The present invention aims toprevent this rotation of the wind-up shaftby looking it in a novel and positive manner. The shaft 27 passes through the girder 9 and is sup ported in bearings 29 and 30. secured to the front and rear faces of the girt 9. A sleeve 31 is secured at the front end of theshaft 27 by means of a set screw 32. A semi-cylim drical portion is removed from the front end of the shaft 27 to provide a driving connection with an operating handle hereinafter to be described. Any other convenient means may be employed to establish this connection; The sleeve 31 extends beyond the front end of the shaft 27 to form a recess 33 which receives an extension shaft 34: upon the end of which is an operating handle 35. The inner end of the extension shaft is shaped complementary to that of the end of the shaft 27 so that when the ends of the shafts are in engagement a driving connection is established therebetween. Extending substantially horizontally from the lower portion of the bearings 29, are a .pair

of ears '36 between which is pivoted a latch member 37; Cooperating with the latch are a plurality of notches 38 in the end of the sleeve 31.

The latch member is so positioned relative to the extension shaft that when the shaft is in .operative'position the end of the latch engages said shaft and is held out of engagement with the notches as shown in dotted lines in Fig. 2. When the-handle is in this position therefore the latch cannot act to'lock' the shaft 27. 'VVhen the'handle :isremoved however the latchinay be swung into position to engage a notch in the sleeve thus locking the shaft against rotation. The

latch member may have any desirable form but-preferably is constructed to act automatically upon removal of the handle to prevent rotation of;the shaft.i In the embodiment herein disclosed the latch is gravity-operated. A weighted arm 40 extends below and to the rear of the'pivot point 39 and upon'rem oval of the shaft acts automatically to move the latchinto engagement .withthe endof the'sleeveand'when the shaft rotrtes sufficiently into one of the notches in the sleeve. v

Any suitable form of wind-up shaft may be employed with or without an extension shaft. The particular'mechanism shown is adapted for use on alloom where itis contemplatedto buildup a cloth roll to a size limited only by the position of the girder 9 as indicated by thefcu'rved dottedline in Fig. 2. Under suchcircumstanc'es itbecomes difficult to reach under thefroll to manipulate the-wind-up shaft. It becomes desirabletherefore to provide an extension so that-the handle will'be in a convenient position. This extension may be aslong as desired since it is normallyremoved from the loom and is used onlyw-hen the operator desires to raise or lower the clothv roll. Upon removal of the handle and its extension shaft thelatch is permitted to engage the sleeve under the ac tion of the weighted arm 40. If. the'vibra tion of theloom tends to rotate the wind-up shaftlit can only move until a notch in the sleeveregisters with the latch at which time the latch will enter the notch and positively lock the shaft against further movement.

' Having thus described the invention, what is claimed as new, and desired to be secured by Letters Patent, iszi 1. A loom comprising a driven take-up roll, a cloth roll upon which the cloth is wound by the'frictional engagement of'the cloth mass thereon with thet'ake-u'p roll. a wind-up shaft journalledin the loom yielding connections between the shaft and' the cloth roll for raising and lowering ,the cloth roll when the shaft is rotated and for permitting thecloth roll to rnove down as the cloth is wound thereon without rotating the shaft, a handle removably connectible to the shaft for rotating it, and meansoperable to lock the shaft against rotation upon removal of the handle.

2. A loom comprising a driven take-up roll, a cloth roll upon which the cloth is Y wound by the frictional engagement of the cloth mass thereon with the take-up roll, a wind-up shaft journalled inthe loom transversely of and beneath the cloth roll, yielding connections between the shaft and the cloth roll for raising and lowering the cloth roll when the shaft is rotated and for permitting the cloth roll to move down as the cloth is wound thereon without rotating the shaft,

a handle removably-connectible to the shaft for rotating it, and'means acting automati-i cally to lockthe shaft against rotation-upon removal of the handle. 7

3. A. loom comprising a driven take-up roll, a cloth rollupon whichsthe cloth is versely of and beneath the cloth roll, yield-.

wound by. the frictional engagement of the cloth mass thereon with the take-up roll, a wind-up shaft journalled in the 100m transing connections between the shaft and the cloth roll for raising and lowering the cloth roll when the shaft is rotated and for permitting the cloth roll to move down as the cloth is wound thereon withoutro'tating the shaft, a handle re'movably connectible to the shaft for rotating it, and a l'atchfpivoted on the 100m operable to prevent rotation of the a shaft when the handle is removed therefrom.

74;. A loom comprising a driven take-up roll, a cloth roll upon which the cloth is wound by the frictional engagement of the cloth mass thereon with the take-up roll, a

, wind-up shaft journalled in the loom transversely of and beneath the cloth roll, yielding connections between the shaft and the cloth roll for raising and lowering the cloth roll 7 when the shaft is rotated and for permitting the cloth 'roll to move down as the cloth is wound thereon without rotating the shaft, a'handle removably connectible to the shaft for rotating it, a latch pivoted on the loom V acting by engagement with the shaft to lock said handle extension and held out of locking' engagement by said handle extension 7 l i when it is inits operating position. i

6. A loom comprising a driven take-up roll, a cloth roll upon which. the cloth is wound by. the frictional engagementof the cloth mass thereon with the take-up roll, a

wind-up shaft ournalled in the loom trans versely of and beneath the cloth roll, yielding connectionsbetween the shaft and the cloth roll forraising and lowering the clothroll V 1' when the shaft is rotated and for permitting.

the cloth roll to move down as thecloth is, V

wound thereon without rotating the shaft, a handle removably connectible to the shaft for rotating it, a sleeve onthe shaft open at its end to receive the handle, a latch pivotedupon the loomacting to lockthe shaft against rotation byengagement with the end of said sleeve upon removal of the handle. 1 '7. A loom comprising a driven take-up roll, a'cloth roll upon which the cloth is wound by the frictional engagement of the cloth of the mass thereon with the take-up roll, a wind-up shaft journalled in the loom transverselyof and beneath the cloth roll, yielding connections between the shaft and the cloth roll for raising and lowering the cloth roll when the shaft is rotated and 'for' permitting the cloth roll to move down as the cloth is wound thereon without rotating the shaft, a handle removably connectible to the shaft for rotating it, a sleeve on the shaft open at its end to receive the handle and having notches therein, a gravity actuated handle.

name to this specification. I

VERNER LINDSJO. v

roll to move down as the cloth-is wound thereon without rotating the shaft, a handle extension removably connectible to the shaft for rotating it, a latch pivoted on the loom adjacent the end of said shaft acting to lock said shaft against rotation upon removal of In testimony whereof, I have signed my s .100 latch .pivote'd'uponthe loom acting to lock 1 the shaft against rotation by engagement with said notches upon removal of the

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