US1799451A - Adjustable drive for top and bottom drawing rolls of spinning frames - Google Patents

Description

A. AMBYE 1,799,451

ADJUSTABLE DRIVE FOR TOP AND BOTTOM DRAWING ROLLS OF SPINNING FRAMES April 7, 1931.

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ADJUSTABLE DRIVE FOR TQP AND BOTTOM DRAWING ROLLS 0F SPINNING FRAMES Filed April 22, 1930 2 Sheets-Sheet 2 I providea draft mechanism in which v v. -Fig. :2

Patented Apr. 7,1931

" fjU-N rsn STA ANTHon AMBYE, on Annovnn,

CHINE COMPANY, on NORTH MASSACHUSETTS Application filed April 22,

This invention relates tospinning frames and particularlyto the draft mechanism incorporated therein. The adjustment of the draft imposed upon the roving as it is spun constitutes oneof the major factors in determining the character of the yarn produced by such machines. It follows, therefore, that adjustment must be made at frequent intervals. It is highly desirable, therefore, that the means provided to accomplish this adjustment be readily accessible and at the same time positive and-accurate in its function. Y 9 y It is the general obj ectof this invention to provide such an adjustment having the desirable characteristics above suggested.

A specific object of the invention is to provide amechanism which is situated at a conv venient height and in' a plane" near the outer limits of the space occupied by the machine.

The object of the inventioniis further to provide a draft mechanism in which a train of spur gears constitutes a connecting means between. the feedanddraft rolls,

5 A furtherfobje t 0f the 'invention is 1to t 1c means for adjustment thereof is rendered accessible by extending the cross shaft associated with the feed rolls to a point adjacent the'outer limits of the machine:

A further object of the invention is to'provide a draft adjusting device which is simple j and compact in design and which maybe enclosed in a protecting casing of small dimensions. i

- Other objects andfeatures will more fully appear from :the following description in connection with the accompanying drawings and-will be particularly pointed out in the claimsj v I Only those elements with which the invention is directly concerned are illustrated since the remaining elements may be constructed -in a manner well known'to those skilled in the party q In the drawings: v.Fig. 1 is a partial transverse section through a spinning frame embodying the invention.

frames of the machine.

the bracket 7; The shaft sidefview of a portion of one warn res. PATENT. OFFICE;

,MASSACHUSETTS, ASSIGNOR TonAvIs & Tonnes, MA-

.ennovnn, MASSACI-IUSETTS,,A conronATroN on I on SPINNING n'nnmns 1930. Serial No. 446,389.

end of a spinning frame showing the draft mechanism and the speedchangingdevice.

The invention is particularly adapted to spinning frames'having two rows of spindles, each row having associated therewith a feed roll and a draft roll to produce the necessary draft, and wherein the feed rolls associated with each row are driven at the. same speed by a transverse shaft while the draft rolls for each row are driven at, the same speed by a separate transverse shaft. The speed ratio existing between the feed rolls and the draft rolls is determined by a train of gearing connecting the two transverse shafts. To varyithe draft one ofthe gears of the; train is made; interchangeable with gears of different diameters. i

It is one-0f the features of the invention to place the train of gearing in an accessible position sothat the draft maybe readily changed. To do this the transverse shafts above referred to'are extended to a point ad jac ent the outer limits of the machine, at

which point the train of gearing is attached.

Since the transverse shafts are normally at a convenient heightabove the floor it follows that if the train of gearing is situated at the ends of their extensions itis readily accessible to permit an operator to change the draft. I

=As herein illustrated the mechanism for permitting adjustment of the draft is mountwithin the casing 1 which is mounted on the end frame 2 of the machine. The rolls and 4t which are commonly calledthe'feed rolls function to supply roving to the mechanism from a suitable supply not shown. The feed rolls 3 and 4 extend throughout the length of the machine and are supported re I spectively insuitablebearings 5 and 6 se- 7.1nounted on the usual cured to a bracket .longitudinal supportlng members 8 and 9 which are in turn supported from the end The feed rolls 3 and ably supported in the bearings 11 and 12 on bevel gear 13 which meshes with a gearjl l on the feed r0113. Another gear 15 on the 10 has thereon a suitable bearing in the bracket 18 which is. 'mounted on the longitudinal support 19 and is supported at its other end in a suitable bear;-

ing in a bracket 20which is fixed to the longitudinal support 21. The supporting members 19 and 21 extend the full. length of the machine and are secured to the end frames thereof. A bevel gear-22 is fixed to one end of the shaft 17 and meshes with a bevel gear 23 on the draft roll 24' while'at the other end of the shaft 17 is secured a bevel gear 25 which meshes with a bevel gear 26 on the draft roll 27. The bevel gears above described are so proportioned that the two draft rollsrot-at'e at the same speed.

As above suggested a train of gearing is provided between the two transverse shafts for determining the relative speed of the feed rolls 3 and 4 andtheir'cooperating draft rolls 24' and 27. Inasmuch as the shafts 10 and 17 are parallel the gear train is desirably composed of a series of spur gears which are of maximum efficiency in the transmission of power. The shaft 10- is. extended at one; end to enter the casing 1 and is rotatably" supported therein in" a bearing 28 formed in a partition wall 29 within the casing. Upon the extended end of the shaft 10is mounted a driving gear 30 which is one element in the connecting train of gearing between the shaft 10 and the shaft 17. It will be noted that by extending the shaft 10it is possible to locate the casing 1 which encloses the gears in an accessible position near the outer limits of the space occupied by the machine.

Adjacent the end of the shaft 17 is fixed a gear 31 which meshes with a gear rotatably mounted on a stud shaft 33"fixedin the partition 29 within the casing. The gear 32 serves to transmit the rotation of the shaft 17 to a shaft 34 through a gear 35 mounted on the shaft 34 and meshing with the gear 32. The shaft" 34 is rotatably mounted ina bearing in a lever 36 which is pivoted upon the stud shaft 33. The lever 36 may be moved thereforeabout its axis and at the same time maintain the gears 32 and 35 in mesh. Detachably mounted on the shaft 33 is a change gear 37 which meshes with the gear 20 on the'shaft 10.

The lever 36 i's'extended' to a point outside the casing 1 to form a handle 38 and has therein adjacent the handle a locking bolt 39 which extends through a slot 40 in the partition 29. The slot 40 is concentric with the axis of the lever which permits movement thereof when r the bolt has been loosened. By tightening the bolt in the slot the lever is held in fixed position to maintain the gear 37 in mesh with the gear 20'. A positive drive is thus established between the shaft 17 and the shaft 10 progressively through the gears 31, 32, 35, 37 and 20.

If it is desired to change the draft a gear of the proper size must besubstituted for the gear 37. No definite order in whichto perfornithe various movements necessary to do this need be followed. A desirable method is to first loosen the bolt 39 to free thel'ever 36, then the gear 37 is removed and the new gear substituted therefor. The lever is then moved about its pivot until. the new gear properly meshes with the gear 30 after which the bolt 39. istightened to lock the gears in mesh.

The speed rolls and the draft rolls have herein been: referred to as single rolls. l tis to be understood, however, that the-feed rolls have associated: therewith the usualpressure rolls 41 while the draft rolls are provided withcooperating pressureroli s 42.. Aproper biteis thus established at thefeed roll and at the draft rolls to draw the roving.

The mechanism may he driveninany suitable manner. A desirable method; is to extend the draftroll 24 intoth'eend frame2 and secure thereon a: gear 43 which maybe directly connected to the jack shaft of themachine orany driven element thereofi 7 Having thus described the inventiomwhat is claimed as new, andidesire'd to" be secured by Letters Patents, is z:

1. In. a spinning frame, a casing located 'nearthe'outer limits of themachineirr aposrtion accessible to the. operator, twov longitu dinally-extending feed rolls'at oppo'site si'des of the frame, a transverse shaft in driving engagement with both ofsaid: feed. rolls and extending into: said casing, a train ofigearin'g within thecasing,a gear on the-end. of said transverse shaft within the casing and in driving engagement with one end of said gear train", two: longitudinally-extending draft rolls at opposite sides: of'the" frame, a transverse shaftiin'driving? engagement with both of said draft rolls, a gear onsai'd lastnamed shaftin driving engagement, with the other end of said gear train, an interchange.- able element in said train whereby the? speed ratio of the feed rolls and the draft rolls may be changed to produce the desired draftand meansto drive the mechanism.

2. In a spinning frame, two. longitudinallyextending' feed ro'l ls, two longitudinal draft rolls co-operating therewith to draw the roving as it is spun, a transverse shaft in driving engagementwith both of said feed rolls, a second transverse shaft. in driving engagement with said draft'roll's, a driving gear on both of said transverse shafts, a train of gearing connecting said transverse shafts, a lever pivoted on the axis of one of the gears in the gear train, a pair of concentric gears mounted to rotate together upon said lever and constituting a part of said gear train, one

of the gears of said pair meshing with the gear in the pivotal axis of the lever and the other being interchangeable and positioned by movement of the lever into mesh with the driving gear on one of the said transverse shafts and means to lock the lever in position i to maintain the gears in mesh.

3. In aspinning frame,two longitudinallyextendin feed rolls, two longitudinally-extending draft rolls vco-operating therewith to draw the roving as it is spun, a casing located near the outer limits of the machine in a position accessible to the operator, a transverse shaft in driving engagement with said feed rolls extending into said casing, a see 0nd transverse shaft in driving engagement with said draft rolls, a driving gear on each of said transverse shafts, a train of gearing within the casing connecting said transverse shafts, a lever pivoted within the casing on the axis of one of the gears in the gear train, a pair of concentric gears mounted to rotate together upon the lever and constituting a part of the. gear train, one of said pair of gears being interchangeable and positioned by movement of the said lever into mesh with a driving gear on one of the transverseshafts, the other gear of the pair meshing at all y timeswith the gear on the shaft about which the lever pivots and means to lock the lever in adjusted position. i

In testimony whereof, I have signed my name to this specification.

ANTHON AMBYE.

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