US1713326A - Twister frame - Google Patents

Description

'Mly 14, s. `BQROVOY ET AL TwIsTER FRAME Filed April 12, 1927 2 sheets-'sheet 1 Z3 57 n o m/ 51 SAMUEL :BonovoY AND WINTHRoP L. PERRY; ori LownLL- MASSACHUSETTS, AS-4V SIGNoRS To SACO-LOWELL SHOPS, or LOWELL, MASSACHUSETTS; A CORPORATION Patented 'May 14, 1929.

l l n 1,713,326@ ,um-rm smrssr PATENT? f OF MASSACHUSETTS.

` Applicatipn med April 12,Y

L "This invention. relates to twisters ofthe Hier type. p e Y Y k It is the general object of-the invention to improve machines ofthis type with a view to `it has been Vfound that the Hiers cannot withstand the stresses set up in them by centrifugal force. Excessive vibration ofthe spindle alsoV occurs, and this fact may contribute in Some measure to the breakage of the fliers.

v The present invention therefore aims to devise ailier which can be operated atvhigh Speeds'. buty which ys till can be manufactured economically. It is a further object of the invention-.to improve the mounting of the spindles withfapviewk to eliminating excessive vibration and devising a construction which will operate smoothly at substantially higher peedsthan those used commercially heretoore.

Y The nature of theinvention will be readily understood from theffollowing description when readin connectioniwith the accompany-`- ingdrawings, and thenovel features will bek particularly pointed "out in the appended claims. y I* In the drawings,

Flgure 1 1s a vert1cal, cross-'sectional view, partly in elevation, showingvv a spindle and Hier construction embodying-this invention;

Fig. 2 is. afront view fshowing the spindle lifter v and parts associated therewith;

Fig.y 3 is a side view, partly in cross-section, showingpartof the housing for the-spindle bolster and the driving gears therefor f Fig. 4 is a cross-sectional view on .the line 4+4,Fig 1;

ig. 5 is a perspective view on a larger scale showing the construction of the novel Hier provided by this invention; v

Fi Gis a vertical, cross-sectional view on kthe l1ne6-k-6, Fig. 5;

,Figr'? is a transverse, cross-sectional view on the line 7,1-7 ,Fig 6; and

f Fig. 8 is a transverse; cross-Sectional View through the Hier arm on the plane indicated at 8-8,Fig. 5, v f

The invention has been shown in Figs. 1 to 4,` inclusive, as embodied in a construction adapted especially for twisting together two or more strands Aof material to form a heavier TWISTER plate to receive screwsk 17,

FRAME.

strand ory cord, the particularimechanisrn.

shown being designed` for luse in the production .of c'ord which is to be woven into tire fabric.

adapted for many4 other uses. As shown,v,the

strands of material are led through the eye,

of a thread guide2 to one arm which 1s mounted on the upper endyof` an 3v of va Hier The invention is, however, obviously upright spindle y5. The thread passes through Y aneye in the lower endI of thearmf and travels to a spool on which itis wound in a manner `well understood l byV those g skilled. in

this.l art.

The lower end of the spindle 5 isrotatably mounted in a bolster 7, Fig. 1, which isesupported abolster casing or housing 8,. This casing ismounted in av stationary spindle rail 9. For the purpose of y 4 'I spiralgear by anothe'rspiral shaft 12. ,e This shaft extends the entire length of the machine and drives the entire series of spindlesin the frame. Anupper casing section 13 cooperates wit enclose thegears 10 and 11.'

The. spool A6 is mountedon a bobbinrail-14 Ywhich is transversed rup anddown during theY operation of the machine in order to wind thev driving the spindle, ya f 10 is secured thereto and is driven e gear 11 fast` onthedriving h thevcasing 8 to thread or cord evenly on .the spool.` `lAs above -v stated, excessive vibrationof thev` spindle is likely to occur when itr is driven at hi h speeds. We have found, however, that t e Y spindle can be madey to run smoothly by providing a .guidebearil gkk for it and mounting this bearing on thebobbin rail 14,.` As shown, this bearing. comprises a bushing 15in which the spindle 5 has a running fit, and this bushing is supported in a bushing plate'16 which lies on the'uppersurface of the bobbinrail 14.k The plate is not mountedrigidly onY the rail but is so su portedthatit canyield latf erally, this yiel ing movement, however, being frictionally resisted. FForthis purpose four holes are drilled through ythe bushing the holesv being considerably larger in diameter than the screws so that. the platean haveconsider ablelateralmovement with reference tothe screws. A spring 18", Fig.j1, islocated immediately under thek head ofY each screw 1,7 vand bears on awasher 20through which the screw projects, .thiswasher restmg on the upper surface of the bushing plate 16. l The bearing bushingl v15 projects throughy a relatively Y ported by another or'disk 24, preferably of libre,

The lower screw largeaperture formed in the bobbin rail 14,

land the spindle 5 is the usual tube 2l. The

bobbin base rests on a disk 22 which is supdisk 28 resting on a washer the disk'23 having two pins 25225 which project into slots in the disk 22; 4 i

If a thread should break, or if for any'other reason it should be desired to .stop the rotar tionof an `individual spindle, `thismay be done by raising the spindle far enough to carry the gear l() out of mesh with its driving gear ll. For this purpose a 'collar 28, Figs; l and'2," is secured on' the spindle just above the housing 13 and is arranged to `be engaged by a roll Q9 which is mounted on the upper end of a slide 30. This slide is guided onscrews l-landi has an `outwardly turned lower end '32 by means ofwhich it may be lifted. i 31 worksin a key-hole slot 83, and when the slide has been raised far enough to effect the stopping of the spindle,

it is locked in this position by a spring pressed catch 34 which snaps out into the lower enlarged part of the slot 33. Thereafter, this spindle is held out of action until the filling of the'spindle".

the bobbins has been completed and the frame is shut down for doiiing. j

Referring now to Figs. 5 to 8 which show in detail the construction of the flier, it will be observed that the flier head 4 consists of a flat bar of metal expanded at its central portion to provide'room for the hole which receives the upper end of the spindle. 'A pin 85 is set into the head and extend-s transversely through the hole, while the upper end of the spindle is 4provided with aslot 3G to 'receive this pin. The flier thus is drivenpositively through this pin andrevolves in unison with 1 Each iiierarm 3 is made of resilient sheet metal of substantially'uniform'thickness and is l U-shaped in transverse cross-sectio`n, as clearly shown in Figs' and 8. This arm may be madefrom flat stock by a relatively simple folding operation, andit is then secured to the head 4 by rivets 37, the end ofthe head being slipped in between the flanges at the upper end of the arm.` Preferably thearm is made of spring tempered sheet steel, and the flanges of the arm extend toward the axis of rotation of the Aflier and lie parallel to a radial plane passing through said axis. The arm is relatively wide adjacent to the head 4 and tapers rapidly toward its free or lower end. Thisconstruction is very strong and rigid while at the same time being very light in weight, and it has been demonstrated in practice that it will operate successfully at speeds far above `those which ywould ruin fliers of prior constructions. The manufacturing operations are relatively simple so that tl expense of manufacture is very reasona e. i Y

The lower end of each arm is provided with a thread guiding eye 38 which'may conveniently be made of hardened steel or other metal.- At this end the flanges of the arm are rolled int-o substantially the form of a split tube, and the eye is frictionally gripped in this tubular member. At the point wherefthe thread or cord enters the arm it is preferable to round off and groove the head, as shown at 89, Fig. 5, to provide smoothsurfacesfor the travel of the thread.

It has been demonstrated inpractice that this spindle and iiercau be operated at speeds i so much higher than those heretofore found practical, ythat a very substantial increasein production is effected. While the flier has been above described with particular reference to the requirements of the mechanism shown, it will be understood that it is also capable of use in machines of other types.

While we have herein shown anddescribed the best embodiment of our invention that we have so far devised, it is contemplated that the invention may be embodiedin other forms ojo without departing from the spiritor scope thereof.

Having thus described ourV invention, what we desire to claim as new is: l. A flierV comprisinga head adapted to be mounted on a spindle, and a sheet metal arm secured thereto, said arm consisting of spring tempered sheet steel Vof' approximately vuniform thickness' and being of Ushape' in transverse cross-section with the flanges thereof extending toward the axis of revolution of the'fiier, said arm being relatively wide adjacent to said head and tapering grad ually toward the free end thereof."

2. A flier comprising a head provided with a hole adapted to receive the upper end` of a spindle,'and an arm made of resilient sheet metal of substantiallyuniform thickness with ies izo

receive a spool immediately below said flier,

and a guide bearing affording yielfding'lateral support to said spindle at a point adjacent tothe lower end of the spool.

4. In a mechanism of the character described, the combination of an upright spindle, a bolster in which said spindle is supported, a bobbin rail above said bolster havlng an aperture through which said spindle projects, a guide bearinr yfor laterally supporting said spindle in the neighborhood of said rail, and means carried by saidrail for supporting said bearing 'for yielding movement laterally with reference to the spindle. 5. A flier comprising a head adapted to be mounted onv a spindle, and a substantially straight sheet metal arm secured to one end of said head, said arm being of U-shape in cross-section with the flanges thereof extending approximately parallel to a radial plane passing through the axis of revolution of the flier, and a thread guide mounted in the lower end of said arm. n

6. A flier comprising a bar-like head adapted to be mounted on a spindle, and an arm secured to and extending from said head,

said arm being made of resilient sheet metal and of `U-shape in cross-section with the flanges thereof extending yapproximately parallel to a radial plane passing through the axis of revolution of the flier,'said head being securedY between the flanges of said -i arm and the arm being relatively wide adjacent to said head but tapering gradually in width toward the free end thereof.

y7. A flier comprising a head adapted to be mounted on a spindle, and an arm*y secured to and extending from said head, saidvarm being made of 'resilient sheet metal and of U-shape in cross-sectionv with the flanges thereof extending toward the axis of revolution of the flier, said arm being relatively wide adjacent to said head and tapering gradually toward the free end of the arm.

In testimony whereof wehave hereunto signed our names to this specification.

SAMUELV BOROVOY. WINTHROPL. PERRY.

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