US1670860A

US1670860A - Bunch builder

Info

Publication number: US1670860A
Application number: US711545A
Authority: US
Inventors: John F Lehman
Original assignee: HOLCOMBE TEXTILE EQUIPMENT CO
Current assignee: HOLCOMBE TEXTILE EQUIPMENT CO; HOLCOMBE TEXTILE EQUIPMENT CO Inc
Priority date: 1924-05-07
Filing date: 1924-05-07
Publication date: 1928-05-22
Anticipated expiration: 1945-05-22

Description

J. F. LEHMAN BUNCH BUILDER May 22, 1928.

Filed May '7, 1924 31 2 Sheets-Sheet 1 J. F. LEHMAN May 22, 1928.

BUNCH BUILDER 2 Sheets-Sheet 2 Filed May '7, 1924 Q m mw kw .3 X.\ Q m M mw ow W. MW NP u .k N w I xv Q HHIIIHHIIIIIII 1| IHHHIII llHlI llllilnu rl'mil Ill Jim/Mm Patented May 22, 1928.

UNITED STATES PATENT OFFICE.

JOHN F. LEH MAN, OF BIRMINGHAM, ALABAMA, ASSIGNOR, BY MESNE ASSIGNMENTS,

TO HOLCOMBE TEXTILE'EQUIPMENT CO, INC, 0]! BIRMINGHAM, ALABAMA, A COR- PORATION OF ALABAMA.

' Application filed May 7,

My invention relates to an attachment for spinning frames having for its object to build automatically a bunch of thread or yarn at the base of the feeler wood on the bobbins or quills before the main service windings are laid on the bobbins.

The purpose of the bunch is to provide sufficient yarn on the bobbin to prevent the feeler changing the bobbin in the shuttle with an unnecessary amount of t-hreador yarn thereon which would constitute Waste. By building this small preliminary winding or bunch the feeler can be caused to throw out the bobbin with just enough thread or.

yarn left on it to reach across the selvage of the cloth in the loom to prevent mispicks or thin places in the cloth.

ard parts of the spinning frame, to the end that my present invention can be easilyand quickly attached to the spinning frame.

My invention operates on the general principle of driving from or with the builder cam shaft a driving element or gear and utilizing the normal movements of the builder rack while the frame is being doffed to bring into co-operation with said element a driven element or gear which will, while so cooperating, intercept control of the builder rack by the main builder cam sufficiently to effect the laying on the feeler wood of the bobbins of a predetermined length of yarn in the form of a small compact bunch. My invention further comprises the novel details of construction and arrangements of parts, which in their preferred embodiment only are illustrated in the accompany 7 ing drawings which form a part of this specification, and in which Fig. 1 is a front elevation of a portion of a spinning frame equipped with my improved bunch building mechanism.

Fig. 2 is a view in side elevation looking at the builder rack with my bunch building BUNCH. BUILD-ER.

1924. Serial n 711,545.

mechanism corelated therewith and shown 1n the act of building the bunch.

h1g3. 3 and 4 are slnnlar views, F 1g. 3

showingthe two idle positions of the driven gear, and Fig. 5 its'position when first raised to engage the driving gear.

Figs. 5 and 6 are respectively enlarged side and end views of a part of the'builder rack showing the element of my bunch buildor mechanism corela-tedtherewith.

Fi 7 is a detail view of the auxiliary pitmovements ofthe rings-ail. The travis chain hook 10 is mounted on the upright rocker arm 11 and has connected to it the builder traverse chain 12 which passes around an idler wheel 13 and is connected to a: drum 14 on the builder rack 15. This raclr15 is pivotallymounted on a stud 16 carried by the head 1 and beyond its pivot it carries a counterweight 17 to partially coun terbalance the weight'of the builder rack. The pick\vl1ecl-18, by means of worm gearing 18, rotates the drum 14 as the application of the mainserviee winding proceeds.

I. suitably journal in the frame 1 a cam shaft 19 for the main builder cam 20 which, in the manner'well understood in the art, engages a pitman roller 21 on the builder rack and moves the latter to effect the traverse forthe main service winding. I'have designed a special shaft 19 which is adapted at its inboard end to project beyond the cam 20 and carry a gear '22, said shaft being driven in any suitable manner from the drive of the frame so as to

rotatethe builder cam

20 and 22 together. This gear 22 constitutes the driving element of the builder mechanism- A The parts as thus fardescribed, with the exceptionof the shaft 19 and gear 22, are

typical of any standard spinning frame in which the ring rail is lowered to doif and have been thus described in detail solely for the purpose of making clear the operation of my builder mechanism which will now be described. I

I attach to the builder rack adepending bracket 23 by means of the standard bolt 24: upon which the main pit-man roller is journaled. The bracket has a shoulder 25 offset so as to engage under the builder rack, thus enabling the single bolt to hold it rigidly in position. In the lower end of the bracket 23 I provide an elongated vertical slot 26 and in this slot I mount a stud 27 provided with a collar or shoulder 28 engaging the inside face of the bracket While a nut 29 engages the outside face and thus clamps the stud in the desired adjustment on the bracket slot. The stud carries on its journal end an auxiliary pitman roller 30 which coacts with the bunch builder mechanism. The stud projects beyond this roller and passes loosely through the lower slot 31 in a hanger 32 which is held on the stud by a washer 33 anda cotter key 3 1. The bracket 27 is free at all times to move vertically with the rack 15 as its stud 27 will play in the hanger slot 31. At its upper end the hanger 32 is provided with a hole adapted to fit loosely over the main builder cam shaft 19 between the gear 22 and a collar 35 held fast on the shaft 19 by the set screw 36. The hanger 32 has in its intermediate portion a longitudinal slot 37 in which a bearing stud 38 is adjustably mounted in the manner described in connection with the mounting of the stud 27 in the bracket 23, and on this stud 38, as a journal hearing, I mount the driven element of the bunch builder mechanism which comprises at its upper end a segment gear 39 and at its lower end a segmental cam 40. The gear 39 is adapted to mesh the gear 32 when the builder rack is in raised position and to clear it when the builder rack is in lower or intermediate positions. The driven element is of hour-glass shape and is provided at its contracted center with an elongated slot 451 through which the stud 38 passes, leaving the element free to play vertically and to rock thereon. The driven element is held loosely on the stud 38 by a collar 42 adjustably mounted thereon by a set screw 43 and carrying a stop element 44 adapted to engage the driven element so as to stop it in any desired position relative to the gear 22, as it moves by gravity when released. A counter-weight 45 to cause such a gravitating movement is attached. to a lower corner of the cam 45, the corner used being dependcut on the direction of rotation of the gear 22. For this reason holes for the weight are provided at both corners of the cam 45 and the stop 44 can obviously beset on either side of the element. The upper gear end 39 of the driven element is formed open at its center to make it lighter relatively than the lower cam portion 40 which will thus always hang down. The lower edge of the cam 10 is provided with corrugations 46 which are adapted to co-act with the auxiliary bunch buildingv pitman 30 to give the requisite traverse to the builder rack during the winding of the bunch.

It is to be understood that in all makes of spinning frames where the main builder cam shaft projects inwardly beyond the builder rack, the gear 22 can be mounted on such shaft without change in this standard part of the frame, but where the main builder cam shaft stops at the builder cam, it is necessary to substitute my special extension shaft 19 so as to receive the bunch builder driving gear 22 and the hanger 32. After the gear 22 and hanger 32 have been mount ed and the bracket23 has been attached to the builder rack and the stud 27 is passed through the'slot 31 of the hanger and adjusted on slot 36 so that when its roller 30 engages a tip or high point of the corrugations 4:6, the main roller 21 will engage a tip ill] or high point on the main builder cam 20.1

Then the stud 27 is clamped in position on the bracket 23 and the mechanism is ready for operation. As the main service winding of the bobbins proceeds the builder rack 15 rises and falls responsive to the co-action of the main builder cam roller 21 and during this part of the operation the gear 39 will stand in the full line position shown in Fig. 3, with the roller 31 playing up and down on the right hand edge of the canrdO, the

gear 39 standing clear'of the driving gear 22, stud 38 at the top of gear slot 41, and the weight 45 in position to rock the gear 39 into position under the gear 22 as soon its cam 4-0 is released fromthe roller 30. Vi hen the frame is filled and it is desired to'dol'f it the ring rail is lowered, whichputs slack in the builder chain 12 and permits the builder rack 15 to rock on its pivot 16 low enough for the pitman roller 30 to clear the cam 4:0 (see dotted position Fig. 3), whereupon the counterweight 45 will rock the controller element about the stud 38 until it is stopped by the stop 44:. This stop is'set to bring the desired number of teeth on the gear 39 into position to mesh with the gear 22, the more teeth being in position to mesh the gear 22 the longer will be thebunch.

#Vhen the builder rack s wound up it 1S raised and from the shaft 19 by the roller- 30. As the driven element is thus turned angular-1y it (ill 1,670,860 v a i 3 will prevent the builder rack followingthe main builder cam, confining the'racks movement to those resulting from the roller 30 following the corrugations 46 of the cam 40.

As these corru ations 46' are struck e ui-- distant from a common center itwill be seen that the bunch will. be built at one place on the bobbin which is at the base of the feeler wood, and the rotation of the main builder cam 20 will not interfere with the bunch builder mechanism because high points of both cams 20 andklOwill touch their re spective pitman rollers at the same time. By adjusting the stop collar 42 about the stud 38 it can be caused to arrest the gear 39 at any desired position and working from either side according to the drive of the gear 22. At the conclusion of the bunch winding operation the gear 39 .will run out of mesh with the gear 22, it being noted that the end teeth of the gear 89 are drawn in on a shorter radius so as to ease the builder rack back into the control of the main builder cam. lVhen new operation. It will thus be seen that the mechanism is entirely automatic,- is extremely simple in construction and reliable in operation and possesses the maximum flexibility of adjustment to suit the different models of frames and to wind different lengths of yarn in the bunch.

Though I have described with great particularity the details of the embodiment of the invention herein shown,'it is not to be construed that I am limited thereto, as changes in arrangement and substitution of equivalents may be made by those skilled in the art without departing from the inven tion as defined in the appended claims.

Having thus described my invention,wl1at I claim as new and desire to secure by Letters Patent, is

1. The combination with a builder motion for spinning frames, comprising a builder cam and a builder rack normally controlled thereby, of a bunch building mechanism comprising a driving element rotatable with said cam, a driven element, means to mount said driven element free for angular and bodily movement, and means on the builder rack for controlling the angular and bodily movements of said driven element to cause it antomatically to engage said driving element for a time, said elements while engaged being adapted to intercept control of the builder rack by thebuilder camvand cause the building of a bunch.

2. The combination with a builder motion for spinning frames, comprising a builder movement, and an auxiliary pitman roller on the builder rack adapted to control the movements of said driven element and to cause it to engage said driven element automatically rcsponsiveto a dofiing operation, said elements while engaged being adapted to intercept control of the builder rack by the builder cam and cause the building of a bunch. i

3. A builder mechanism according to claim 2, in which'said driving element is a gear and the driven element comprises a gear segment. 3 v 1 4. A builder mechanism according to claim 2, .in which the driving element is a gear and the driven element comprises a toothed segment adapted to mesh said gear and a cam segment adapted to engage said auxiliary pitman roller. v

5. A builder mechanism according to claim 2,'in which the driven element is mounted free to rock and slip on a stud, and a hanger is provided having an elongated slot in which the stud is adjustably mounted. I 6. A builder mechanism according to claim 2, in which the driving'element is a gear 'andthe driven element comprises a gear segment and a cam segment and has an intermediate elongated slot, a stud bearing loose'in the slot, a hanger adapted to be suspended .from the builder cam shaft and having an elongated slot in which said stud is adjustably mounted. Y

' 7. In a builder'mechanisi'n, the combination with a builder cam having a driving shaft and a builder rack having a pitman roller adapted to engage said cam, of a gear on said shaft, a hanger suspended from the shaft, a segmental gear journaled to both rock and slide on said hanger and having an underhung cam surface, an auxiliary pitman roller on thebuilder rack disposed to underlie said cam surface when the rack is lowered during the dofling operation so that when the rack is raised from such lowered position it will engage said cam surface and lift the segmental gear into mesh with said gear on the cam shaft, said segmental gear after running out of mesh with its driving gear being adapted to drop past and be held against gravitating movement by said auxiliary pitman roller, a weight to swing said segmental gear when released by said latter roller, and an adjustable stop to limit the gravitating movement of said segmental gear, said gears while engaged being adapted to intercept control of the builder rack by the builder cam.

8. A bunch builder mechanism comprising a gear adapted to be mounted on the main builder cam shaft, a bracket adapted to be mounted on the frame, an element comprising an upper gear segment and a lower cam segment with an intermediate slot, a stud mounted on the bracket and passing loosely through said slot, a stop mounted on .said stud and adjustable thereon to limit the gravitating movement of said segment gear, and an auxiliary pitman roller adapted to be mounted on the builder rack and to'control the operation of the segmental gear. i

9. A bunch builder mechanism according to claim 8, in combination with a stand for the auxiliary pitman roller adapted to be attached to the builder rack and having an elongated slot, and a bearing for the auxiliary pitman roller adjustably mounted in said slot.

10. A bunch builder mechanism according to claim 8, in which a bearing for the auxiliary pitman roller is mounted adjustably on the builder rack and said bracket for the segmental gear is adapted to be hung from the main builder cam shaft, there being an elongated slot in the lower end of said bracket in which said bearingworks, as and for the purposes described.

11. Ina machine of the class described, the combination of yarn guides, builder arm connected to the yarn guides, a rotatable.

toothed gear, a toothed segment, means-to mount the segment free to oscillate first in one direction into operative relationship between the builder arm and said toothed gear and then in the opposite direction out of such operative relationship, and means for limiting the oscillating movement of the segment in each direction.

12. In a machine of the class described,

the combination of yarn guides, a builder arm connected to the yarn guides, a mechanism for imparting traverse to the yarn guides, a toothed segment, means to pivotally mount the segment free to oscillate first in one direction into operative relationship between the builder arm and said toothed gear and then in the opposite direction out of such operative relationship, said segment and gear when engaged being adapted to intercept control of the yarn guides by said traverse mechanism, and means for controlling the amplitude of oscillation of the toothed segment.

13. In a machine of the class described, the combination of yarn guides, a builder arm connected to the yarn guides, a rotatable toothed gear, a toothed segment, means to pivotally mount the segment alongside the builder arm free to oscillate first in one direct-ion into operative relationship between the builder arm and said toothed gear and then in the opposite direction out of such operative relationship, and stop means to vary the extent of the angular movement of said segment while in such operative relationship. I

14. In a machine of the class described, the combination of yarn guides, a traverse mechanism normally controlling said yarn guides and comprising a builder arm, a rd tatable toothed gear having a drive co-ordinated with the said traverse mechanism, a

toothed element pivotally mounted free to oscillate first in one direction into operative engagement with said gear and then in the opposite direction out of such engagement, said element and gear, when engaged being adapted to intercept control of the yarn guides by said traverse mechanism to build a bunch, and means for controlling and varying the duration of such operative engagement of the element and gear.

In testimony whereof I atfix my signature.

JOHN F. LEHMAN.