US1412719A - Bobbin-cleaning machine - Google Patents

Description

A. Lx STUTTS.

'BOBBIN CLEANING MACHINE.

APPLICATION FILED NOV.3.1920.

Patented Apr. 111, 1922.

6 $HEETSSHEET I.

A. L. sums. BOBBIN CLEANING MACHINE.

APPLICATION FILED NOV-3, I920.

Patented Apr. 111, 1922.

6 SHEETS-SHEET 2.

mwwo A. L. STUTTS.

BOBBIN CLEANING MACHINE.

APPLICATION FILED NOV.3,1920.

1,419,? 1 9D Patented Apr. 11, 1922.

6 SHEETS-SHEET 3.

. l'vwenfor Ma Mm mm afiflwmwa A. L. STUTTS.

BOBBIN CLEANING MACHINE.

APPLICATION FILED NOV-3,1920.

Patented Apr. H, 1922.-

6SHEETSSHEET 4.

A. L. STUTTS.

BOBBIN CLEANING MACHINE.

APPLICATION man NOV-3,1920. Y

IAJLQJTIILQO 'Pmmem r. 111, 19212.

A. L. STUTTS.

BQBBIN CLEANING MACHINE. APPLlCATiON FILED NOV-3, 1920.

31 412 719 Patented Apr. 11, 1922.

6 SHEETS-SHEET 6- entree STTES earner enema.

AEA LENDQ SEUTTS JQH UNIDN, SQUTH CAROLINA, ASSIGNOR T0 MONARCH BOBBIE! GLEANER 0%, 0% UNION, SOUTH CARQJLENA, A CORPORATION OF SOUTH CAROLINA.

tenant-emanate momma Application filed November 3, 1920. Serial 1W0. 421,505.-

To all whom it may concern Be itknown that 1, item LENno STUT'rs, a citizen of the United States, residing at Union, in the county of Union and State of South Carolina, have invented certain new and useful Improvements in Bobbin-Cleanin Machines; and I do hereby declare the f0 lowing to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

,My invention relates to improvements in bobbin cleaners, and is intended to provide a machine from which the rovings from partly unwound bobbins may be quickly and effectively removed without the necessity for any speclal manipulation, or any speclal attention on the part of the operator during the cleaning process; and in which the bobbins to be cleaned may be fed indiscriminately into a hopper and'the clean bobbins may be removed from the other end of the machine, while the rovings are removed from the bobbins as they pass through the machine without materialinjury to the fibre, and said rovings are caught by a suction blast and carried to a condenser from whence they are delivered to any suitable receptacle.

'M invention will be more fully understoo after reference to the accompanying drawings, in which likeparts are indicated by similar reference symbols throughout the several views, and in which Figure 1 is a side elevation of the complete machine.

Figure 2 is a plan view of the complete machine.

Figure 3 is an end view of the complete machine as seen from the right of Figure 2. Figure 4 shows a vertical section along the broken line 44 of Figure 2, and looking in the direction of the arrows.

igure 5 is a fragmentary view showing one of the link belts with the bobbin holders mounted thereon, the parts being shown on a larger scale than in the former figures.

Figure 6 shows a section along the line 66 of Figure 5, parts being shown in plan.

Figure 7 shows a section along the line 77 of Figure 6, and looking in the direction of the arrows.

Figure 8 shows a section along the line 88 of Figure 6, and looking in the direction of the arrows.

Figure 9 is a plan view of-the metal plat- Patented Apr. 111, 1922.

form or shelf on which the bobbins are fed from the hopper, and illustrates the yielding springs for arresting the movement of the bobbins until caught by the bobbin holders.

Figure 10 is an end view of the parts shown in Figure 9, as seen from the left of Saidfigure.

F igure 11 shows a section along'the line 11-12 of Figure 9, and shows a section through the bobbin as it first engages the yielding spring arm; and

Figure 12 is a similar view to Fig. 11, except it shows the bobbin just as it is being re eased b.. the yielding spring arm.

A and are two cross beams or plates secured to any suitable bed plate or platform A" in any convenient way, as by means of the screw bolts a.

Secured to the plates A and A are the side framesB,'and the vertical stanchions B and B flanged as at b and secured to the plates A and A by means of suitable bolts 6'. These side frames also comprise longitudinal beams B and B*, which serve as supports for the various shafts hereinafter mentioned.

Mounted between the opposite side frames, and secured respectively thereto, is the hopper C, in which the bobbins to be cleaned are thrown, which hopper is provided with a reduced throat C. v a

To each of the side frames B'- a double track is connected. the outer member D of which is connected to the frame B by the braces d, see Figure 3, and this outer member of the double track is of continuous elliptical form provided with a continuous slot al see Figs. 2 and 5-7. Parallel to the outer track of each set of tracks is the inner track D, which is secured directly to the frame B and is provided with a similar groove d oppositely disposed to the corresponding groove in the outer track, as shown in Figure 4. This inner track is also substantially elliptical, and has a continuous bottom and ends, but the upper portion of the track is broken away throughout a part of its length, as indicated in Figs. 2, 4 and 6. The inner track I) is curved inwards at the two ends of the break, asshown at d (s% Figs. 6 and 2) for reasons that will be later described.

Mounted between the side frames B is the hopper E, which is open at the top to receive the rovings stripped off of the bobbins, which hopper is connected by the air trunk E to the suction chamber E in which is mounted.

a suction fan M, and this chamber E is connected b the trunk F to the top of thecondenser away in Figure 2.

. its front end is a horizontal shelf or apron T, shown in Fig. 4, and in detail'in Figs. 9 to 12. This shelf I is preferably a metal plate rovided with downwardly projecting flanges I, secured by the bolts ito the frame B, This shelf is slotted on opposite sides, as

at 1, to permit the movement upwards of the stop rollers J, carried by the yokes J which are connected to the leaf springs J held in the clamps J shown in detail in Figures 9 to 12. The function of these springs and rollers will be hereinafter described.

The foregoing description relates more especially to the fixed parts of the apparatus, but without describing the details of the moving parts, and these will now be describe v K represents the main driving shaft which is driven from any suitable source of power, and is provided with several pulleys engaging corresponding belts. The pulle K, mounted on this shaft K, drives the elt L which drives the smaller pulley M on the shaft M, and this drives the fan M at a high speed. The pulley K on the shaft K drives the belt L, which belt engages the smaller pulleys N, N and N on the shafts n, n and a carrying the brushes 0, O and 0 as shown most clearly in Figure 4.

Thepulleys N, N and N are so dimensioned with regard to the pulley K that if the shaft K is rotating at 300 revolutions per minute, the brush 0 will rotateat a greater velocity, say 800 revolutions per minute, and

the brushes 0 and O at still increasing velocity, or say 850 and 900 revolutions per minute, respectively. The brushes 0 and 0 may be moved forwards or away from the bobbin carriers by adjusting screws and nuts 0 and these brushes are preferably arranged so that the brush 0 cleans the bobbins and the brushes 0 and O serve as cleaning brushes to remove the rovings, respectively, from the brush 0 and the brush 0.

The small pulley K on the driving shaft K enga es the belt L which drives the larger pulley at a reduced speed, say'50 revolutions per minute, and this pulley P is mounted on a shaft P carrying the pulley P see larger pulley Q, on the shaft Q which is preferably covered by the woven wire top 9, which is shown as broken ia avie Fig. t, which drives the belt L engaging the at a further reduce speed, say 8;; revolutions per minute. This shaft Q, carries a pair of sprocket wheels Q which engage-the sprocket chains R, which chains pass over corresponding sprocket wheels Q at the opposite end of the machine, mounted on the shaft Q These shafts Q and Q are journaled in yokes S which-may be adjusted relative to the frame F by means of the adjusting screws 8, see Figure 4. The shaft Q also carries a pulley Q, see Figure 1, which drives the belt which belt L drives a pulley G on the shaft of one of the condenser rolls G. These condenser rolls are connected together by the gears g, so that as the main shaft continues to revolve these condenser rolls draw the revings down and squeeze the air out and deliver them to an suitable receptacle, not shown.

The chamsR carry the extensible bobbin holders at opposite sides of the track, as will now be described.

The bobbins are of the usual shape and perforated throughout, as shown at Z in F i ure 4, and each perforated end of the bobbin is adapted to be enga ed by the spring impressed tip of the bob in holder, preferably holder T is provided with a cylindrical shell if having an outwardly projecting lug 13 engaging in the groove (13 in the outer track D, as shown most clearly in Figure 8. This 0 lindrical shell is provided with a downwar y projecting lug t adapted to enga" e one'of the links of the chain R by which t e shell is caused to move transversely to its axis.

Slidably mounted in the shell is the plunger T which is normally pressed outwards by the spring T and has a stop rib t adapted to engage the washer t which is secured on the interior of the hollow shell t. This plunger T is provided with" a blunt pointed tip ttwhich is adapted to bepressed into the perforations in the end of the bobbin under the action of the spring T, as will be hereinafter described.

Each plunger T has an upwardly projecting lug t which is adapted to engage a cam u on the cam plate U, see Figs. 1 and 2, when it isdesired to withdraw the point of the plunger from engagement with the end of the bobbin, and consequently to release the bobbin and to permit it to fall awa from the bobbin holder.

aving thus described the construction of the various parts in detail, the operation of the complete apparatus will now be described.

It is, of course, assumed that the main shaft is rotating, and that the various parts are in motion. The bobbins to'be cleaned with the rovings on are thrown indiscrimiemma nately in the hopper C and tend to roll down towards the throat C as shown in Fi re 4. As each bobbin reaches the shelf its ends bring u against the spring impressed rollers J, ten ing to prevent the bobbin from rolling forwards on the shelf, as shown in Fi s. 4 and 11. At the moment when these ro lers J are pressed down, as shown in Figure 12, the ointed ends 5 of the respective bobbin ho ders will pass clear of the curved ends d of the two inside tracks D, and the points of these spring plungers T will snap into engagement with the ends of the axial opening through the bobbin, thus serving as journal bearings for the bobbins.

As the bobbins are carried forward in the direction of the arrow in Figure 4 they will be presented seriatim to the oleanin brush 0, and the rovings will be torn o without unnecessarily breaking or injuring the fibre, and the teeth of this brush 0 will be cleaned by the dofiing or cleaning brushes 0 and 0 the cleaned bobbins are sucked down through the hopper E and air trunk E to the suction fan and are forced by the blast up through the trunk F to the condenser G, where the excess air esca es through the screen at the top of the said chamber, and the rovings falling down into the bottom of said chamber are caught between the rolls 'G and are delivered in the form of a bat released bobbins fall down into the inclined chute H, and, passing through the mouth it of said chute, may be collected in any suitable receptacle, not shown.

It will be noted that the only manual work incident to the operation of the machine is the throwing of the bobbins into the hoppers C- and removing the condensed roving from the bottom of the condenser G and removing the cleaned bobbins after they fall from the chute H.

None of these hand operations requires any skilled labor at all, and there is no necessity for an attendant to touch the bobbin from the time it is thrown into the hopper C until the cleaned bobbin comes out of the machine, or for him to touch the roving in any way until it is carried from the hopper C through the apparatus and falls out of the bottom of the condenser G.

While I have shown the brush 0 only used for cleaning oft the bobbins, it will be obvious that the brush 0' may also be' caused to directlyengage with the bobbin The rovings torn loose fromif desired, leaving only a single dofing brush 0 So that the frame B may be he t taut at all times, and that the operation 0 the bobbin holders may be properly timed for gripping and releasing, it provide the adjusting mechanism for the shaft comprising the okes S and the other parts for regulating the same shown in Figs. 1 and 4:. *Any other suitable adjusting means may be provided for other partsot the apparatus as may be desired.

lit will be obvious also that various modifications in the herein described construction, and in the combination and arrangement of parts mi ht be made which could be used without eparting from the spirit of my invention; and I do not mean to limit the invention to such details except as particularly pointed out in the claims.

I claim:

1. Apparatus for removing the rovings from bobbins, comprising a feed hopper, tracks located below said hopper, endless chains moving between said tracks, bobbin holders carried by said endless chains and engaging said tracks, means for causing said bobbln holders to operate in pairs and to grip the ends of said bobbins, means for stripplng the rovings from said bobbins while held in said bobbin holders, means for releasing the cleaned bobbins from said holders, and means for carrying away the rovings after removal from said bobbins.

2. Apparatus for removing the rovings from bobbins, comprising a feed hopper, a

receiving shelf mounted below said hopper, tracks also located below said hopper, endless chains moving between said tracks. bobbin holders carried by said endless chains and engaging said tracks, means coacting with said shelf to present the ends of the bobbins to said bobbin holders, means for causing said bobbin holders to operate in pairs and to grip the ends of said'bobbins, means for stripping the rovings from said bobbins while held in said bobbin holders, means for releasing the cleaned bobbins from said holders, and means for carrying away the rovings after removal from said bobbins. 3. Apparatus for removing the rovings from bobbins, comprising a feed hopper, tracks located below said hopper, endless chains moving between said tracks, bobbin holders carried by said endless chains and engaging said tracks, means for causing said bobbin holders to operate in pairs and to grip the ends of said bobbins, a rotary brush for stripping the rovings from said bobbins while held in said bobbin holders, means for cleaning said brush, means for releasing the cleaned bobbins from said holders, and means for carrying away the rovings after removal from said bobbins.

4. Apparatus for removing the rovings i from bobbins, comprisin a feed hopper, a

receivin shelf mounted elow said hopper,

holders carried by said endless chains and engaging said tracks, means coacting with said 7 shelf to present the ends of the bobbins to said bobbin holders, means for causing said bobbin holders to operate in pairs and to grip the ends of said bobbins, a rotary brush for stripping the rovings from said bobbins while held in said bobbin holders, means for cleaning said brush, means for releasing the cleaned bobbins from said holders, and means for carrying away the rovings after removal from said bobbins.

5. Apparatus for removing the rovings from bobbins, comprisin a feed hopper, tracks located below sai hopper, endless chain's moving between saidtracks, bobbin holders carried by said endless chains and engagin said tracks, means for causing said bobbin olders to operate in pairs and to grip the ends of said bobbins, means for stripping the rovings from said bobbins while held in said bobbin holders, means for releasing the cleaned bobbins from said holders, a hopper for the removed rovings mounted beneath said stripping means, a suction fan, a condenser, and air trunks connecting said last mentioned hopper with said fan, and said fan with said condenser.

, 6. Apparatus for removin the rovings from bobbins, comprising a feed hopper, a receiving shelfmounted belowsaid hopper, tracks also located below said hopper, endless chains moving' between said tracks, bob bin holders carried by said endless chains 'and engaging said tracks, means coacting With said shelf to present the ends of the bobbins to said bobbin holders, means for causing said bobbin holders to operate in pairs and to grip the ends of said bobbins, means for stripping the rovings from said bobbins while held in said bobbin holders, means for releasing the cleaned bobbins from said holders, a hopper for the removed rovings mounted beneath said stripping means, a suction fan, a condenser, and air trunks connecting said last mentioned hopper with said fan, and said fan with saidcondenser.

7. Apparatus for removing the rovings from bobbins, comprising a feed hopper, tracks located below said hopper, endless chains moving between said tracks, bobbin holders, each provided with a spring. im-

pressed plunger, said holders being attached to and carried by said endless chains and engaging said tracks, means for causing said plungers to operate in pairs and to engage the ends of said bobbins, means for stripping the rovings from said bobbins while held in said bobbin holders, means for withdrawing said plungers and thereby releasing the cleaned bobbins from said holders, and

engaging said tracks, means coacting with said shelf to present the ends of the bobbins to said bobbin holders, means for causing said plungers to operate in pairs and to engage the ends of said bobbins, means for stripping the rovings from said bobbins while held in said bobbin holders, means for withdrawing said plungers and thereby releasing the cleaned bobbins from said holders, and means for carryln away the rovings after removal from said obbins.

9. Apparatus for removing the rovings from bobbins, comprising a shelf, means for feeding said bobbins to said shelf, a pair of tracks located at each side of said shelf, endless chains moving between said tracks, bobbin holders, each provided with a spring impressed plunger, said holders being attached to and carried by said endless chains and engaging said tracks, means for causing said plungers to operate in pairs and to engage the ends of said bobbins while on said shelf, means for stripping the rovings from said bobbins while held in said bobbin'holders, and means for withdrawing said plungers and thereby releasing the cleaned bobbins from said holders. z,

10. Apparatus for removing the rovings from bobbins, comprising a shelf, means for feeding said bobbins to said shelf, a pair of tracks located at each side of said shelf, endless chains moving between said tracks, bobfrom bobbins, comprising a shelf, means forfeeding said bobbins to said shelf, a pair of tracks located at each side of said shelf, yielding spring impressed guide rollers for guiding the ends of the bobbin carried by said shelf, endless chains moving between said tracks, bobbin holders, each provided with a spring impressed plunger, said holders being attached to and carried by said endless chains and engaging said tracks,

-\..nieans, a suction fan, a condenser, and air .means for causing said emme means for causing said plungers to ope 'i'ate in pairs and to engage the ends of said bobbins, while on said shelf, means for stripthe rovings from said bobbins while in said bobbin holders, and means for withdrawing said plungers and thereby releasing the cleaned bobbins from ,said holders.

12. Apparatus for removing the rovings from bobbins, comprising a shelf, means for feeding said bobbins to said shelf, a pair of tracks located at each side of said shelf, yielding spring impressed guide rollers for guiding the ends of the bobbin carried by said shelf, endless chains moving between said tracks, bobbin holders, each provided with a spring impressed plunger, said holders being attached toand carried by said endless chains and engaging said tracks, lungers to operate in pairs and to engage t e ends of said bobbins, means for stripping the rovings from said bobbins while held 'in said bobbin holders, and means for withdrawing said plungers and thereby releasing the cleaned obbins from said holders.

13. Apparatus for removing the rovings from bobbins, comprising a frame, a pair of tracks on each side of said frame, endless chains moving between said tracks, bobbin holders carried by said endless chains and en aging said tracks, means for feeding the bo bins to said bobbin holders, means for causing said bobbin holders to operate in pairs and to grip the ends of said bobbins, means for stripping the rovings from said bobbins While held in said bobbin holders,

means for releasing the cleaned bobbinsfrom said holders, a hopper for the removed rovings mounted beneath said stripping trunks connecting said last mentioned hopper with said fan, and said fan with said condenser.

14:. Apparatus for removing the rovings from bobbins, comprising a frame, a pair of tracks on each side of said frame, a receiving shelf for the bobbins, endless chains moving between said tracks, bobbin holders carried by said endless chains and engaging said tracks, means coacting with said shelf to present the ends of the bobbins to said bobbin holders, means for causing said bobbin holders to operate in pairs and to grip the ends of said bobbins, means for stripping the rovings from said bobbins while held in said bobbin holders, means for releasing the cleaned bobbins from said holders, a hopper for the removed rovings mounted beneath said stripping means, a suction fan, a condenser, and air trunks connecting said last mentioned hopper with said fan, and said fan with said condenser.

15. Apparatus for removing the rovings from bobbins, comprising a frame, a pair of from bobbins, comprising a frame, a pair'of tracks on each side of said frame, a receiving shelf for the bobbins, endless chains moving between said tracks, bobbin holders carried by said endless chains and engaging said tracks, means coacting with said shelf to present the ends of the bobbins to said bobbin holders, means for causing said bobbin holders to operate in pairs and to grip the ends of said bobbins, a rotary brush for strippin the rovings from said bobbins While he (1 in said bobbin holders, means for cleaning said brush, means for releasing the cleaned bobbins from said holders, and means for carrying away the rovings after removal from said bobbins.

17. Apparatus for removing the rovings from bobbins, comp-rising a frame, a'pair of tracks on each side of said frame, endless chains moving between said tracks, bobbin holders carried by said endless chains and enga ing said tracks, means for feeding the bobblns to said bobbin holders, means for causing said bobbin holders to operate'in pairs and to grip the ends of said bobbins, means for strlpping the rovings from said bobbins while held in said bobbin holders, and means for releasing the cleaned bobbins from said holders.

18. Apparatus for removing the rovings from bobbins, comprising a frame, a pair of tracks on each side of said frame, a receiving shelf for the bobbins, endless chains moving between said tracks, bobbin holders carried by said endless chains and engaging said tracks, means 'coacting with said shelf to present the ends of the bobbins to said bobbin holders, means for causing said bobbin holders to operate in pairs and to grip the ends of said bobbins, means for strippingthe rovings from said bobbins while held in said bobbin holders, and means for releasing the cleaned bobbins from said holders.

19. Apparatus for removing the rovings from bobbins, comprising a frame, a pair of tracks on each side of said frame, endless chainsmoving between said tracks, bobbin holders carried by said endless chains and engaging said tracks, means for feeding the bobblns to said bobbin holders, means for causing said bobbin holders to operate in the '' gers for withdrawing said and thereby releasing the cleaned bobbins pairs and to grip the ends of said bobbins, a rotar brush for stripping the rovings from said obbins while held in said bobbin holders, means for cleaning said brush, and

means for releasing the cleaned bobbins from said holders.

20. Apparatus for removing the rovmgs from bobbins, comprising a frame, a pair of tracks on each side of said frame, a receiving shelf for the bobbins, endless chains mov ng between said tracks, bobbin holders earned by said endless chains and engaging said" cleaning said brush, and means for releasingthe cleaned bobbins from said holders.

21. Apparatus for removing the rovings from bobbins, comprising a shelf, means for feeding said bobbins to said shelf, a pair of tracks located at each side of said shelf, endless chains moving between said tracks, bobbin holders, each provided with a spring impressed plunger, said holders being attached to and carried by said endless chains and engaging said tracks, means for simultaneously releasing opposite pairs of plungers, thereby causing said plungers.to operate in pairs and to engage the ends of said bobbins while on said shelf, means for stripping the rovings from said bobbins while held in said bobbin holders, and a pair of cams engaging said plungers for withdrawing said plungers in pairs and thereby releasing the cleaned bobbins from said holders.

22. Apparatus forremoving the rovings from bobbins, comprising a shelf, means for feeding said bobbins to said shelf, a pair of.

tracks located at each side of said shelf, endless chains moving between said tracks, bobbin holders, each provided with a spring impressed plunger, said holders being attached to and carried by said endless chains and engaging said tracks, means coacting with said shelf to present the ends of the bobbins to said bobbin holders, means for simultaneously releasing opposite pairs of plungers, thereby causing said plungers to operate in pairs and to engage the ends of said bobbins, means for stripping the rovings from said bobbins While held in said bobbin holders, and a pair of cams engaging said'plunplungers in pairs from said holders.

23. Apparatus for removing the rovings from bobbins, comprising a shelf, means for feeding said bobbins to said shelf, a pair of tracks located at each side of said shelf,

yielding spring impressed guide rollers for guiding the ends of the bobbin carried by said shelf, endless chains moving between said tracks,-bobbin holder s, each provided endless chains and engaging said tracks,

means for simultaneously releasing opposite pairs of plungers, thereby causing said plungers to operate in pairs and to engage'the ends of said bobbins, while on said shelf, means for stripping the rovings from said bobbins While held in said bobbin holders, and a pair of cams engaging said plungers for withdrawing said plungers in pairs and thereby releasing the cleaned bobbins from said holders. I i v 24. Apparatus for removing the rovings from bobbins, comprising a shelf, means for feeding said bobbins to said shelf, a pair of tracks located at eachjside of said shelf,

yielding spring impressed guiderollers for guiding the ends of the bobbins carried by said shelf, endless chains'moving between said tracks, bobbin holders, each provided with a spring impressed plunger, said holders being attached to and carried by said endless chains and engaging said tracks, means for simultaneously releasing opposite pairs of plungers, thereby causing said plungers to operate in pairs and to engage the ends of said bobbins, means for stripping the rovingsfrom said bobbins while held in said bobbln holders, and apair of cams engaging said plungers for withdrawing said plungers in pairs and thereby releasing the cleaned bobbinsfrom said holders.

25. Apparatus for removing. the rovingsfrom bobbins, comprising ashelf, means for feeding said bobbins to said shelf, a pair of tracks located at each side of said shelf, end- I less chains moving between said tracks,'bobbin h'olders, each provided with a spring impressed plunger, said holders being at tached to and carried by said endless chains and engaging said tracks, means for simultaneously releasing opposite-pairs of plungers, thereby causing said plungers to operate in pairs and to'engage the ends of said bobbins while on said shelf, means for stripping the rovings from said bobbins =while held in said bobbin holders, a pair of cams engaging said plungers for withdrawing said plungers in pairs and thereby releasing the cleaned bobbins from said holders, a hopper for the removed rovings mounted beneath said stripping means, a suction fan, a condenser, and air trunks connecting said last mentioned hopper with said fan, and. said fan with said condenser.-

26. In a bobbin stripping machine, an endless carding-surface, means for causing the carding surface to travel, and means for causing a bobbin to travel transversely of its axis past andin contact with said carding

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