US2234297A - Web conveying machine - Google Patents

Description

' G. c. Bx-:lDLr-:R 2,234,297

WEB CONVEYING MACHINE Original Filed Nov. 30. 1937 Sheets-Sheet l March 11, 1941.

March 1l, 1941. G c, BEIDLER NEB CONVEYING MACHINE Original Filed Nov. 30, 1937 7 Sheets-Shaet 2 G. C. BE'IDLER WEB CONVEYING .MACHINE Match 11, 1941.,

7 Sheets-Sheet 3 Original Filed Nov. 30, 1937 IMI March 11, 1941. G, c. BExDLER WEB CONVEYING MACHINE 7 Sheets-Sheet 4 Original Filed Nov. 30. 1937 March 11, 1941. G, Q BElDLER 2,234,297

WEB CONVEYING MACHINE' A Original Filed Nov. 30, 1957 7 Sheets-Sheet 5 March 1l, 1941. G, Q BEIDLER 2,234,297

WEB CONVEYING MACHINE Original Filed Nov. 50, 1937 'T Sheets-Sheet 6 givvucnbyo @ewige CezZe/j M//QQMM/ March 11, 1941. G. c. BEIDLER WEB CONVEYING MACHINE Original Filed Nov. 50, 193'? '7 Sheets-Sheet 7 Patented Mar. 11, 1941 UNITED STATES PATENT OFFICE WEB CONVEYING MACHINE George C. Beidler, Rochester, N. Y.

10 Claims.

This invention relates to a machine for drying a web coated on both sides with a sensitized emulsion and has special reference to a feeding and transfer mechanism. for such a film or for any other type of web to be carried by a web carrier.

More particularly the present application relates to a division of my prior application for Sensitizing coating machines filed November 30, 1937, Serial No. 177,350, and having matured into Patent No. 2,185,049.

While the term film has been used in a generic sense, the invention has its greatest utility in connection with the coating of paper lm, since such ilm has an increased expansive and contractive characteristic compared with other known carriers of emulsion.

It is an object of the invention to provide novel means for applying the lm to the carriers or the segments which are provided with pins for impaling or impinglng the film, and novel means, as stated, `are provided for pressing the paper on the pins and then freeing the carriers with the lm attached thereto; the said impaling instrumentality being also associated with means for operating the lm tensioning device associated, in this embodiment of the invention, with the stick and the aforesaid segmental supports.

With the foregoing and other objects in View, the invention consists in the details of construction, and in the arrangement and combination of parts to be hereinafter more fully setforth and claimed.

In describing the invention in detail, reference will be had to the accompanying drawings forming part of this application, wherein like characters denote corresponding parts in the severa] views, and in which- Figure 1 illustrates an edge elevation oi one oi the main feed rolls and the partsI carried thereby;

Figure 2 illustrates an edge view of a portion of a main feed roll showing a part of the edge not disclosed in Fig. 1;

Figure 3 illustrates a section on the line 3 3 of Fig. 2;

Figure 4 illustrates a face View of the main feed roll with the parts carried thereby and also showing auxiliary feed rolls associated with th main roll;

Figure 5 illustratesI a side elevation of a cover plate shown in Figs. 1 and 4 and disclosing the manner in which the plate is secured;

Figure 6 illustrates a side elevation of a certain camming roll and its `bracket as shown in Fig. 4;

Figure 7 illustrates a section on the line 'l-'l cf Fig. 1;

Figure 8 illustrates a section on the line 8-8 5 of Fig. 7;

Figure 9 illustrates an edge View of a certain eccentric ring and blade disclosed in Fig. 7;

Figure 10 illustrates an edge view of a portion of one of the main feed rolls showing a certain paper web clipping or holding means and part of its operating mechanism;

Figure l1 illustrates a section through the feed roll of Fig. 10 and showing an elevation of the clipping means and operating mechanism at right angles to the manner in which the parts are shown in Fig. 10;

Figure 12 illustrates a section on the line |2--l 2 of Fig. 10;

Figure 13 illustrates a detail section on the line l3-i3 of Fig. 4;

Figure 14 illustrates a detail section on the line I4-|4 of Fig. 1, but in the opposite direction to the arrows on said line;

Figure 15 illustrates an enlarged section on the line IAS-I5 of Fig..14;

Figure 16 illustrates a face view of a certain cam used in connection with a main feed roll;

Figure 17 illustrates a side View of the cam shown in Fig. 16; 30

Figure 18 illustrates a second side view of said cam at'right angles to Fig. 17;

Figure 19 illustrates a developed diagram of said cam;

Figure 20 illustrates a plan View of one of the 35 main feed rolls and the parts adjacent thereto;

Figure 2l illustrates a side elevation of certain of the parts shown in Figure 20, the view disclosing the driving means and a rocking Ibracket used in the invention;

Figure 22 illustrates a fragmentary section on the line 22-22 of Figure 20 and showing the gearing connecting certain shafts; and

Figure 23 illustrates an enlarged kshowing in' side elevation of a certain means used herein to effect tripping of a latch to start the main feed roller rotating.

Figure 24 is a fragmentary detail showing the relation of the device shown in Figures 1 to 23 to a stick and its runway or supporting rail.

The sticks used in connection with this invention are supported on a pair of inclined rails A and are moved by driven chains (not shown) up'- wardly along the rails. i J l Each of the sticks C is provided at each end with a supporting block or slide I2 which is supported on and travels along a rail A. These slides I2 are connected by a transverse-rod having a central portion I3 rounded on one side and having angularly disposed faces on the other side. This central portion merges at its ends into octagonally prismatic portions I4 which again merge into portions I5.

Fixed to one octagonal portion i4 Aofthe stick, at one of its ends, is an arcuate paper support having outwardly projecting radial prongs 26.

The main feed rolls are each supported on a shaft 4I carried by one arm of a bellk crank bracket 42 and these rolls are located `at the right and left ends of the shaft 4I respectively, it being understood that the apparatus forming the subject matter of the present application is duplicated in the complete machine as is shownl in my copending application Serial No. 177,350. Revolubly mounted on the shaft 4I is a sleeve 42 whereon is xeda sprocket 43 driven by a chain 44. Splined on the sleeve 42 is a sleeve 44'` whereon is revolubly mounted the main feed wheel 45, the sleeve 42" extending entirely through the sleeve 44 and thus projectingthrough the Wheel 45. Fixed on the projecting end of Athe shaft'4l is a cam .45 having the face adjacent the Wheel 45 provided with a high segment 41, an intermediate segment' 48 and a low segment 49. Fixed on the wheel 45 is a bracket 5I) carrying a cam roller 5I whichbears constantly on the cam face, being held thereagainstA by aspring 52. surrounding the sleeve 42 between the sprocket 43 and the adjacent .end of the sleeve 44. While the wheel 45 is revolubly mounted on the sleeve 44', a ratchet 53 is fixed on this sleeve and revolves therewith as the sprocket is. actuated, the latter rotating constantly during the operation of the machine. Pivoted on the wheel 45 is a pawl 54 urgedby a spring 55 int-o engagement with the ratchet 53. A stop 55 engages the pawl tail 5,1-upon each complete revolution of the wheel 45 an-d causes it to disengage from the patchet 53, the extent of` disengagement being limited by a stop 58 xed on the wheel. 45.

The paper web P is fed at. each. edge down chains .59 each passing arounda sprocket 65. These` sprockets 60 are. mounted .on a shaft 60a extending across the machine andsuitably supported at each side thereof. The brackets 42v are rockingly mounted at their angleson theshaft 60a. The chains 59 are provided at intervals with paper engaging pins 59a.. From the chains 59v the web P passes over an auxiliary roller 6I and a second and smaller roller 62. This auxiliary roller has a sponge rubber periphery Sla. Since the timing of theparts is such that themovement of thev stick C is slower than the peripheral speed of the wheel 45in order that loops or bights may be formed between the successive sticks, the paper must continue to feed past the wheels 45 while they are at rest. Also, the wheels 45 revolve intermittently and for these reasons it is necessary that the paper during stoppage of the wheels 45, shall roll freely over the rollers 6I and 62. In order to free the rollers 6I and 62 so that the paper will not be gripped between them and the wheel 45, there is mounted on the rear face of the wheel 45 a set of pins 63 which are disposed at the anglesrof an equilateral triangle and are so positioned that the center of a circle circumscribed about these pins and tangent thereto will be dispo-sed eccentrically to the center of the wheel. As best shown in Fig. 8,. thereis-mounted on each of these pins a revoluble s1eevei64 and a,

spacing sleeve is mounted on each pin to rest against the wheel 45, the spacing sleeves terminating in spaced relation to the ends of the sleeves 64. On the projecting ends of the sleeves 64 is mounted a ring 66 which is thus supported as an ecentric strap, the sleeve and pin arrangement forming an ecentric embraced by this strap. The ring or strap 65 is held in position on the sleeves 64 by caps 61 secured to the ends of the pins 63 by screws 58. Attached to the ring 66 is a bracket 69 which carriesv an eccentric blade or rod 1B. Swingingly mounted o-n a frame rod 1I is an arm12 carrying a stub shaft 13 Whereon the roller GI is revolubly mounted. On the blade 1G adjacent its free end is a sleeve 14 wherein the stub shaft 13 isv slidably mounted so that the lateral movement of the wheel 45 relative to the roller 6I may ber effected. On the stub shaft is mounted a lever 15, one arm of which is connected to swing on the shaft 15a by a swinging link 15 pivoted to said arm at one end having'its other end mounted an -a fixed pivot 15a.. The other arm of the lever` 15 hasrrpivoted thereto an arm 11 which is held in normal alinement with the lever 15 by a spring 18, This arm carries at its free end the roller 62.

With this arrangement the eccentric acts, as the wheel 45 rotates, to alternately move the rollers toward and from the wheel 45.v

In Yorder to grip the paper firmly between the wheel 45 and the paper supports 25 as they pass beneath the wheel and also to allow for the movement of the sticks slower than the wheel, there is provided a pocket 19 formed in the periphery of the wheel and extending arcuately therearound. In this pocket is fitted an arcuate slide of channel shape in cross section and the channel is lled with an arcuate massy 8| of sponge rubber which, as kshown in Figs. 2' and 3, normally projects beyond the periphery of the wheel 45. The slide isnormally held at what may be termed the forward or advancing end of ,the pocket by springs r82 which have their forward ends xed to posts 83 projecting from the members 45 and their rear ends xed to brackets 83 by screws 34 passing to. the slide through arcuate slots 85 formed in thel s.

side faces of the wheel 45, as shown in Fig. 4. The movement of the sticks and the rotation of the wheel 45 are so timed that a paper support 25 engages the forward end of the mass 8| at each revolution of the wheel 45. As the wheel 45 has a greater peripheral speed, due tothe member 254 on the -stick elevating the wheel shown in Fig. 24, than the lineal speed of the sticks, the continuance of the rotation of the wheel causes the latter to move faster than the mass can move, ,so that -i-z the wheel advances to cause the slide to be engaged by the rear end of the pocket 19. Then, as the stick passes clear of the arcuate mass, the springs which have been tensioned by the movement just described, retract the slide to its normal position. It will be noted that the screws 84 serveto hold the slide in its pocket.

At a certain part of the revolution of the wheel, it is desirable to hold the edge cf the paper web closeA to the periphery of the wheel `45 while, during the remainder of the revolution,v itis desirable that the pap-er web be free from'the Wheel; The paper web ,isheld from thetime it leaves the feed chains '59 until it is engaged on at each side. On theouterfside of thewheel this plunger carries a head81 whichsupports a finger Gil 88 extending across the peripheral face of the Wheel closely adjacent thereto. The function of this finger is to engage the outer surface of a portion of the paper web P in contact with the wheel when said finger is in position across the wheel. 'I'he other end of the plunger carries a rack 89 on the end of which is xed a bracket 90 which supports one end of a coiled compression spring 9| having its end supported by the wheel 45. This spring urges the finger to operative position (Fig. 10). The rack 89 meshes with a gear 92 fixed on a shaft 93 journaled in a bracket 94 fixed to the front face of the wheel 45. A bracket 95 may also aid in supporting the shaft 93. On the shaft 93 is fixed an operating lever 96 which normally extends angularly forward with reference to the direction of rotation of the wheel from the shaft 93. The shaft 4| is provided with a head 91 (Fig. 4) to which there is fixed a plate 98 carrying an arm 99. This arm supports a blade |00 which lies in the path of the lever as the wheel 45 rotates. When the lever 96 engages the blade |00, the rotation of the wheel causes the lever to swing `in an anticlockwise direction as Viewed in Fig. 4 and this, through the gear and rack, retracts the finger 88, as shown in dotted linesl in Fig. 10. As soon as the lever 96 passes the blade |00, the spring 9| returns the linger to normal position. This retraction of the finger occurs just at that point in the revolution of the wheel at which the finger approaches the paper web P. The return to normal occurs as soon as the finger passes the plane of the paper web so that the nger then vengages the paper web and holds it to the periphery of the wheel. On the plate 98 is fixed a bracket |0| (Fig. 4) which supports a xed shaft |02 whereon is pivoted an end of arm |03, the shaft being eccentric to the axis of the wheel 45. The plate 98 carries a stop |04 against which the arm is normally held by a spring |05. A stop |06 limits movement of the arm |03 against the action of the spring |05. This arm carries a blade |01 which is in sliding and overlapping contact with a lblade |08 mounted on a fixed bracket |09. 'I'he blades |01 and |08 lie in the path of the lever 96 which is operated to retract the fingerv 38 Iby the action of the blade |00. On the front face of the wheel 45 is fixed a post ||0 which, by the revolution of the wheel, engages the back `of the blade |01 and moves it against the action of the spring |05. Due to the eccentricity of the pivot shaft |02, after the post ||0 has moved the blade |01 a certain distance, the blade will ride over the post and, by action of the spring |05, will return tonormal position. The post ||0 is so positioned in relation to the shaft 93 that upon the blade |01 being released from the post, this blade will engage and quickly turn the lever 96 to finger-retracting position, thus releasing the paper web. The lever 96 will continue in iinger-retracting position until it rides off the blade |08, whereupon it will be :returned to normal position by the action of the spring 9|.

Provision is made to keep the paper web from slipping during the first part of its engagement by the finger 88 so that it cannot accidentally slide from between the finger and wheel 45. To

this end, the wheel 45 is provided, adjacent the finger 88, with a radial .bore wherein is mounted a plunger ||2 carrying a needle ||3.

The outer end of this bore is closed by a needle '5 guide ||4 and the needle is held normally re-` tracted by a spring I5 (Fig. 12) .l In the plunger 2 is provided an opening ||6 wherein is fitted the end of a pin ||1 projecting through a slot 8 formed in the front face of the wheel 45. This pin is supported by the free end of an arm 5'y ||9 pivotally mounted on a bracket |20 on the front face of the wheel 45 and the pin projects from the arm and carries a cam roller |2| (Figs. 11 and 13) On the cam 46 is a camming lug |22 which projects peripherally from the cam and is 10 positioned to be engaged by the cam roller 2| just before the lever 96 passes off of the blade |00. By this engagement the needle is projected and passes through the paper web to hold the latter from slipping until the roller 6| engages 15 and grips the paper web. The timing of this part of the device is such that the needle ||3 remains engaged with the paper until the stick passes beneath the wheel 45 and engages the paper. The roller |2| then passes from the cam 20 lug |22 and the spring ||5 again retracts the needle.

By reference to Figs. 20, 21 and 22, it will be seen that, while one arm of the bell crank 42 -carries the shaft 4|, the other arm has ashaft 25 |23 fixed therein. As shown best in Fig. 21, the shaft |23 has a sprocket |24 mounted thereon `and the chain 44 extends around the sprocket |24 as well as the sprocket 43. It will be noted that in Fig. 21 many parts are omitted in order 30 to show the arrangement of the remaining parts without confusion. On the shaft 23 is also mounted a gear |25 which is connected to the sprocket 24 by screws |26 passing through spacing sleeves |21. A collar |28 serves to hold the 35' sprocket |24 and gear |25 on the shaft |23. It will be seen in Fig. 20 that there are two sprockets 60. One of these sprockets 60 is connected by screws |29 and spacers |30 with a gear |3| mounted on the shaft 60a and meshing with the 40 gear |25. By this means the shaft 4| is constantly driven even when the wheel 45 is raised by the stick passing beneath it.

Mounted on each side rail is a bracket |32 to which is pivoted one end of a triparm |33. This 45 arm lies in the path of the sticks C so that as each stick moves along the rail A it passes beneath and lifts the arms |33. A clamp |34 secures the sheath |35 of a Bowden wire |36 to the bracket |32. The wir@ las is secured to the 50 arm |33 as by a screw |31. The remaining end of the sheath is secured by a clamp |38 to an arm |39 carried by a bracket |40 fixed to theA bell icrank 42. The latch arm 56 is pivoted to the bracket |40 as at 4| so as to form a twoarmed lever, one arm of which normally engages the pawl tail 51. The Bowden wire |36 is secured to the remaining arm of this lever by a screw |42. A spring |43 connects this last arm and the bracket |40 so that the latch arm 56 is cono stantly urged into position to engage the tail 51. Normally the wheels 45 are at rest, but as a stick C passes the trip arms |33, these arms lift and push on the Bowden wire so that the latches |55 56 are freed from the pawl tails 51 and the pawls 54 engage the constantly rotating ratchets 53 and the wheels 45 start to rotate. As soon as the stick C passes from beneath the trip arms 33, these arms are free to fall and the springs |43 act to 70.

restore the latch 56 to pawl tail engaging position so that upon the completion of one revolution of the wheels 45, the pawls 54 are disengaged from the ratchets 53 and the Wheels 45 cease to move.

Thus the sticks are moved in succession beneatl'ilil 50 jecting from one face of the trip arms |33a .and .then beneath the wheels .45. Asthe sticks'are thus moved, each wheel 45 is intermittently engaged, by thev actionof the trip lever, to its continuously revolving ratchet 53,

57:- each engagement causing one complete revolution of the wheel. As the wheel rotates, the finger 88 is first retracted and then released to engage thepaper web as it is fed to the wheel. As soon as engagement is effected, the needle I i3 is actu- 10? ated to pierce and hold the paper web untilit. is

engaged by the roller 6| through the action of the eccentric strap E5. The finger 83 continues to hold the paper web until the edge ofthe paper web is gripped between the stick and the arcuate 15? mass Blf, after which the blade |07 acts to retract the finger 88 and release the paper web whichv isV now draped over the stick,` Further movementof the wheel 45 restores all parts thereon to normal position and the wheel temporarily ceases to rezo'volve so that a proper length of paper web may be fed from the feed chains to form a bight before the next stick arrives beneath the wheel 45. i

I claim:

l. In a web conveying machine, a feed wheel 25'3 having a periphery engaged by lm which it 35'roller, a second roller mounted for motion toward and from themain feed roller, said rollers being arranged to grip opposite faces of the web between them upon the second roller being moved toward the main feed roller, cam means carried by and 40 rotating with said main feed roller, and a linkage connecting said cam means and they second roller for moving said second roller into yand out of web `gripping position.

3; In a yweb conveying machine, a main-feed 4,54 roller, a second roller mounted for motion toward and from the main feed roller, said rollers being arranged to grip opposite faces of the web between them upon the second roller being moved toward the main feed roller, a series of posts prosaid main feed roller and arranged with their axes in a circle eccentric to the axis of said main feed roller, an eccentric strap surrounding said posts, and an arm connecting said strap and the second roller whereby 55 -to effect movement of the second roller towardV and from the rst roller.

4. In a web conveying machine, a main feed roller, a second roller, means to support said second roller, for swinging movement, toward and (Vfrom the first roller and including a stub shaft whereon said second roller is journalled, .a .series of posts extending from one face of the. main feed roller and arranged with their axes on a circle eccentric to the axis of the main feed roller, sleeves 65 mounted revolublyA on' said posts, an eccentric strap surrounding the series of posts and sleeves and engaging the peripheral surfaces1 of all of said sleeves, and an arm extending radially from said eccentric strap and having an opening in 7 (lv its outer end receiving a portion of said stub shaft.

5. In a web conveying machine, a main feed roller, a second roller mounted for-motiontoward' and from the main feed roller, said rollers beingA arranged tof grip opposite. faces of the web between '(5 .them .upon thesecondlrollerbeing moved toward the main feed roller, a series of yposts projecting from one face of said main feed rollerY and ar ranged with their axes in a circle eccentric to the axisof said main feed roller, aneccentric strap surrounding said posts, an arm connectingsaid strip and the second roller whereby to effect movement of the second roller toward and from the first roller, and means to cause single complete .revolutions of said main roller at spaced time intervals.

6. In a web conveying machine, a main feed roller, a second roller, means to support said second roller Afor swinging movement toward and from the rst roller and including a stub shaft whereon said second roller-is journalled, a series of posts extending from one face of the main feed roller and arranged with ytheir axes on a circle eccentric ,to the axis of the main feed roller, sleeves mounted revolubly on said posts, an eccentric strap surrounding the series of posts and sleeves and engaging the peripheral surfaces of all vof said sleeves, an arm extending radially from` said eccentric strap and having an opening in its outer end receiving a portion of said stub shaft,

and means to cause single complete revolutions of said main roller at spaced time intervals.

7. In a web conveying machine, a main feed roller, a second roller mounted for motion toward and from the main feed roller, said rollers being arranged to grip opposite faces of the web between them upon the second roller being moved toward the main feed roller, a series of posts projecting from one face of said main feed roller and arranged with their axes in a circle eccentric to the axis of said main feed roller, an eccentric'strap surrounding said posts, an arm con-l necting said strap and the second roller whereby to eiect movement of the second roller toward and from the first roller, a hollow shaft whereon said main roller is revolubly mounted, means for continuously rotating said hollow shaft, a ratchet fixed to said hollow shaft and resting against one side face of said roller, a pawl carried by said main roller and spring urged into engagement with said ratchet, a dog in the path of said pawl springvurged to engage said pawl and hold it from engagement with said ratchet, and means acting at intervals to move the dog out of said path to free said dog temporarily from said pawl and arranged to allow the dog to return to said path upon engagement of the ratchet by the pawl.

8. In a web conveying machine, a main feed roller, a second roller, means to support said second rolier for swinging movement toward and from the first roller and including a stub shaft whereon said second roller is journalled, a series of posts extending from one face of the main feed roller and arranged with their axes on a circle eccentric to the axis of the main feed roller, sleeves mounted revolubly on said posts, an eccentric strap surrounding the series ofA posts and sleeves and engaging the peripheral surfaces of all 'of said sleeves, an arm extending radially. from said eccentric strap and having an opening in its outer end receiving av portion of said stub shaft, a hollow shaft whereon said mainrroller is revolubly mounted, means for continuously rotating said hollow shaft, a ratchet fixed to said hollow shaft and resting against one side face of said roller, a pawl carried by said main roller and spring urged rinto engagement with saidy intervals to move the dog out of said path to free said dog temporarily from said pawl and arranged to allow the dog to return to said path upon engagement of the ratchet by the pawl.

9. In a Web conveying machine, a main feed roller, a second roller mounted for motion toward and from the main feed roller, said rollers being arranged to grip opposite faces of the web between them upon the second roller being moved toward the main feed roller, means actuated from the main feed roller for moving the second roller between Web gripping and web releasing positions, means to cause single complete revolutions of said main roller at spaced time intervals, a prong mounted for radial movement in said main feed roller and having an outer end projecting from the periphery of said main roller in one position and retracted within the roller in a second position, spring means urging said prong to retracted position, an operating lever operatively connected to said prong for moving said lever to protracted position, said lever being pivotally carried by said main roller to revolve therewith, and means xed in the path of said lever to move the lever at one point in the revolution of said main roller and thereby to cause protraction of the prong.

10. In a web conveying machine, a main feed roller, a second roller mounted for motion toward and from the main feed roller, said rollers being arranged to grip opposite faces of the web between them upon the second roller being moved toward the main feed roller, means actuated from the main feed roller` for moving the second roller between web gripping and web releasing positions, means to cause single complete revolutions of said main roller at spaced time intervals, a finger normally extending across the periphery of the main feed roller in closely spaced relation thereto, means to mount said nger on said main roller for sliding movement transversely of said periphery, spring means urging said nger to normal position, a lever operatively connected to said nger mounting means for moving said nger clear of said periphery, said lever beingv pivotally supported on the main roller remote from the axis thereof, and means fixed in the path of said lever to engage and actuate the lever as the main roller rotates.

GEORGE C. BEIDLER.

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