US2596157A

US2596157A - Festooning device

Info

Publication number: US2596157A
Application number: US103443A
Authority: US
Inventors: Edgar I Leed
Original assignee: Armstrong Cork Co
Current assignee: Armstrong World Industries Inc
Priority date: 1949-07-07
Filing date: 1949-07-07
Publication date: 1952-05-13
Anticipated expiration: 1969-05-13

Description

May 13, 1952 E. l. LEED FEsTooNING DEVICE 3 Sheets-Sheet 1 Filed July 7, 1949 l l l l glu/vwo@ EDGAR I. LEED ao: um;

May 13, 1952 .1. LEED 2,596,157

FESTOONING DEVICE Filed July 7, 1949 5 Sheets-Sheet 5 IW/YM EDGAR I-LEED Patented May 13, 1952 FESTOONING DEVICE Edgar I. Leed, New Holland, Pa., assigner to Armstrong Cork Company, Lancaster, Pa., a corporation of Pennsylvania Application July 7, 1949, Serial No. 103,443

11 Claims. 1

This invention relates to a iestooning device and more particularly to an automatic device for holding sheet material to prevent the same from slipping as the festoon is being started.

In the stoving of sheet material such as linoleum, it has been common practice to hang the material in long festoons in stoves or curing chambers. In order to increase the capacity of the stoves, several festoons are formed within one another. In some instances as many as six or more festoons are hung within one another over the same batten roll. 'Io accomplish this, the stoving operation is performed inthe conventional manner, lling the stove first with one festoon per batten roll; and the operation is repeated, filling the stove the second time with festoons placed Within -the previously formed festoons. This operation is repeateduntil the desired number of festoons are placed on each hatten roll. i

Prior to the present invention, this stoving operation was a diiicult one inasmuch as the batteri rolls were pulled into position in engagement with the lincoming sheet material and a festoon-making pad was manually forced into eri-1A gagement with the face of the material to rmly hold the same on the batten roll While the festoon was being formed. The possibility for error in applying the pressure pad at the proper moment was rather great, and the operation has alwaysf been rather tedious and difficult.

In order to overcome the disadvantages of the old system of making festoons, I have developed a device in which the batten rolls are pulled into position with the incoming sheet material;` and when the hatten roll has advanced to the proper position, the pressure pad automatically drops and clamps the material between the pressure pad and the batten roll, preventing slippage, thus forming a new festoon. l

The object of this invention is to provide a machine which will automatically clamp material in engagement with a batteri roll until a festoon is formed and will thereafter automatically be retracted and cocked ready to re peat the operation at the proper time.

In order that my invention may be more readily understood, it will be described in connection with'the attached drawings in which:

Figure I is a side elevational View of a sheet material stoving carriage embodying my invention with the clamping device in cocked or ready position;

Figure II is an enlarged viewv of the clamping device in raised position;A and into the stove.

Figure III is an enlarged view of the clamping device in operative position, clamping the sheet material on the surface of the batteri roll.

Referring to Figure I there is shown a side elevational view of the device of my invention in the position it assumes in a sheet material curing stove. Along the top of the stove are two channel rails designated by the numeral 2, positioned one on each side of the stove. On top of the channel rails 2 and secured thereto are gear racks 3 which run the entire length of the stove. Only a portion of the rear rack 3 is shown in Figure I, the remainder being eliminated to better illustrate the device of the invention. Positioned on top of the rails 2 and movable thereon is a sheet material stoving cariage 4 comprising a frame work 5. rI'his carriage 4 is moved along the gear racks 3 by means of gears S which are mounted on the frame 5 and are in engagement with the racks 3.

Slidably mounted on the bottom flanges of the channel rails 2 are the batten rolls l. These batteri rolls 'I are round except for their ends which are shaped as shown in FigureIII so they will slide on the bottom portion of the channel rails rather than rotate as they are moved along.

Mounted on the carriage 4 is a drum 8 which is driven by means of chain engaging the sprocket ID secured to the drum 8. This chain 9 is a part of the feed-in mechanism of the stove and operates from the main driving roll (not shown) which pulls the material into the stove. The speed of rotation of the drum 8 is synchronized with the speed of the pull-in roll so that no slippage occurs. Mounted on the lead-in end ofthe carriage is an idle roll Il which merely supports the sheet material as it passes thereover. The sheet material is designated by the numeral l2 and travels into the stove in the direction ofarrow A. Immediately below the driven drum 8 is a small idler roller i3 which lies in engagement with the material as it passes In Figure I a batten roll 'l is shown with one festoon of sheet material disposed thereon, and the second festoon is being formed.

In order to make the necessary adjustments to properly guide the material into the festoon, the driven roll 8 is mounted in pivot bearings I4 which are adjustable horizontally. This horizontal adjustment is accomplished by moving the mounting I6 in a horizontal direction by means of the lever Il. The bearing I4, which is pivotally'mou'nted on the member I6, pivots as the mounting is moved horizontally, thereby eliminating the possibility of the bearing and shaft binding.

Immediately above the batten roll 1 in Figure I is a pressure pad I6 which is capable of exerting pressure on the sheet material I2, clamping it tothe batten roll 1 to prevent slippage thereover at the time a festoon is being started. In the view shown in Figure I the festoon being formed to the left of the batten roll 1 is of suicient length to create enough friction to prevent the material from slipping over the batten roll, and the pressure pad has been raised and cocked ready for the next festoon. Figure III shows the pressure pad in position, clamping the sheet material to the batten roll at the start of a new festoon.

The pressure pad is comprised of a friction surface I9, which is preferably of a hard flexible material such as belting material. Under this friction surface is a layer of soft resilient material, such as sponge rubber, 20. The purpose of this structure is to present a friction surface for engagement with the sheet material and have it backed by a resilient material so that the sheet material will not be deleteriously affected thereby. In the preferred embodiment two pressure pads are provided across the carriage, each pressure pad being approximately 12 inches wide. These pressure pads are carried on holders 2| which are in turn secured to a channel beam 22 disposed across the carriage. This beam 22 is carried on rocker arms 23 keyed to a shaft 24. Also keyed to shaft 24 is latch arm 25. The

shaft 24 is mounted for free rotary movement:l

within the framework of the carriage.

Mounted on top of the carriage and centrally thereof is a ratchet wheel 26 keyed to a shaft 21. Also keyed to shaft 21 is a sprocket 28. Mounted on shaft 21 immediately beside the ratchet wheel,`

of the bell crank 29 and capable of engagementw with ratchet wheel 26 is a pawl 3|. Pawl 3|y is provided with a laterally extending pin 32. A pawl release 33 is attached to the top of beam 22 and extends upwardly to a position where it can'engage the pin 32 to release pawl 3| from the ratchet wheel 26. Since the bell crank 29"` is free to rotate about shaft 21, such rotary movement is limited in a clockwise direction -by pawl 3l and in a counterclockwise direction by a stop 34.

At the extreme left of the machine is a sprocket 45 which is provided with a take-up spring 46. This take-up spring 46 permits the sprocket 45 to move horizontally a limited distance.

At the bottom of the carriage in engagement with the batten roll 1 is a batten mover hook 35 which is attached to a movable block 36 positioned below the undersurface of the top ange of channel rail 2. This block 36 is held in stable position by means of a roller 31 which rides on the undersurface of the top flange of the channel rail. Attached to block 36 is -a sear actuating trigger 38 which is so positioned that it will Y engage a Sear 39 mounted on the framework of the machine.

within the sear 33 is a coil spring 42 which holds the sear 39 up and out of the way of trigger 38 when the latch is not in use. A second spring 43 isprovided to urge the sear into recess 44 on the bottom surface of the latch arm to hold the entire pressure pad assembly in its cocked position.

A chain 41 passes over a manually driven sprocket 48 to which is attached a hand crank 49. This chain 41 also drives sprockets 28 and and carries the block 36. Directional idler sprockets are provided where necessary to guide the chain 41.

vIn order to prevent the block 36 from moving to the left carrying the batten roll with it there is provided on the block a ratchet surface 56 which is engaged by a pawl 5|. Pawl 5| is pivotally attached to a bracket 52 by means of a pivot pin 53. This arrangement permits the pawl 5| to engage the ratchet 50 and prevent the block r36 from moving to the left. I-Iowever, the pawl 5| does not prevent the block 36 from moving to the right.' As the block 36 is moved to the right, the pawl 5| is disengaged from the ratchet surface and swings freely about the pivot pin 53. Inasmuch as pawl 5| swings freely about pin 53, it does not interfere with the return of the block 36 to engage another batten roll. When the block 36 is being moved forward, the upstanding member carrying the ratchet 50 engages the dangling pawl 5| and swings the same into position in engagement with the ratchet 56. The batten mover hook 35 is pivotally mounted on the block 36 by means of pin 54 which passes through block 36. This allows the hook to swing freely in a counterclockwise direction as it is being returned to Ibring in the next batten roll. :Swinging movement in a clockwise direction is limited by a stop 55 attached to the block 36. This stop 55 holds the hook 35 in proper position for moving the batten roll. The trigger mechanism 38 is similarly mounted so that the stop 56 keeps the same standing upright to actuate the sear 39. The spring 51 holds the trigger in engagement with the stop 56 and also allows the trigger to pivot in a clockwise direction when the block 36 is being returned Ifor another batten roll. The stop 55 is adjustable so that the trigger can be adjusted to release the latch at the precise moment so that the time of fall of the pressure pad will be just right to strike the batten roll lwhen it is in proper position. This time of fall will not be the same when placing the sixth festoon on a batten roll as it was when placing the rst festoon thereon. Therefore, an adjustment is necessary.

In order that the carriage can be held in a xed position with respect to the rack 3 there is provided a pawl 58 attached to the carriage which is capable of engagement with the teeth of the rack 3. When it is necessary to move the carriage, the pawl is raised by pulling the cord 59 attached thereto releasing the pawl from the rack and leaving the carriage free to roll in the gears 6. The carriage is moved manually by placing the hand crank 49 on the square end 60 of the shaft on which two of the gears 6 are mounted.

In order to limit the distance which the hook travels in its return to pick up the next batten roll, .the element carrying the ratchet 50 is provided with a flat vertical surface 6| which engages the stop 62 on the sprocket support 63. .Ituwill be understood that a chain 41 is located Z-on lboth sides of the machine; also a block 36 -turned to bring forward batten roll 1. accomplished by rotating the hand crank 49 in sure pad I8 drops.

Vtioned kon both sides ofthe machine. However,

`only'oneblock .36 carries the trigger 38.

The operation of the device will now be explained, starting from `the position shown in Fig- 1 to prevent slippage, the pressure pad is no longerrnecessary. The hand crank 49 is rotated in a-clockwise direction drawing chain 41 in the direction of arrow B. Since block 36 is secured to chain 41, block 36 also moves in the direction of arrow B, carrying with it the battenroll 1 engaged by hook 35. Batten roll 1 is moved to a nal position at the right of the device beyond the portion `shown in the drawing; the block 36 carrying the batten mover hook 35 is then re- 'Ihis is `a counterclockwise direction so that chain 41 will move in the opposite direction carrying the block 36 and hook 35 into the position shown in dotted lines at the left of Figure I. The hook 35 is stopped in this position by reason of the surface 6Istriking the stop 62.

When the festoon being formed between batten roll 1 and the idler roll I3 approaches the desired length the hand crank 49 is again rotated in a clockwise direction, pulling batten roll 'I' in the direction of arrow B. Batten roll 1 contacts the incoming sheet material at a point directly beneath the idler roll I3. It is essential that the speed of the forward movement of the batten roll be the same as the incoming speed of the sheet material so that no slippage occurs Abetween the point at which the batten roll touches the material and the point at which the pres- As the batten roll 1 comes into position under the pressure pad I8, the trigger 38 carried by the block 36 strikes the lower end of seal 39, pivoting the same about point 4I and moving the top of the sear out of engagement with the recess 44 on the bottom surface of latch arm 25. Latch arm 25, being keyed to shaft 24, is the only means for preventing shaft 24 from turning in a counterclockwise direction. Since latch arm 25 has been released, the entire pressure pad assembly drops under its own weight, clamping the sheet material between the pressure pad I8 and the hatten roll 1. This stops the formation of the festoon on batten roll 1, and a new festoon starts to form between batyten roll 1 and the idler roll I3.

After suicient material has formed on the festoon so that it creates suihcient friction to prevent slippage, the pressure pad is elevated by means of turning the hand crank 49 in a counter- 'clockwise direction. This rotates sprocket 28 and ratchet wheel 26 both keyed to the same shaft in a clockwise direction. Since the pawl 3| attached to bell crank 29 is in engagement with the ratchet wheel 23, this action also rotates the bell crank 29 in a clockwise direction. Cable 30 attached to the periphery of the bell crank 29 raises the entire pressure pad assembly, pivoting` the

arms

23 and 25 with .the shaft 24 as a center. This upward movement continues until latch arm 25 strikes the stop 34. As the latch arm 25 is beingraised by the actionof the bell crank, the end of the arm engages the cam surface on the sear 39 which is heldthereagainst by the spring 43. When arm 25 strikes stop 34, it is sufficiently high that sear 39 slips into the recess 44, holding latcharm 25 and the entire pressure pad mechanism in elevated position. At vthis time 16 the pressure pad assembly is in the position shown inFigure II.

While the pressure .pad is being elevated as .described above, fa .block 36 `is prevented .from moving vbackwards by reason of the ratchet surface 56 on block 36 which is engaged by pawl 5I attached to bracket 52. Since the block 36 is held in position, the chain 41 along the bottom of the device does not move and the chain used in raising the pressure pad assembly is made available by the springtake-up 46 attached to sprocket 45, permitting the same tomove horizontally.

After the pressure `pad mechanism has been elevated as shown in Figure II, the hand crank is turned clockwise which rotates sprocket 28 and ratchet wheel 26 in a counterclockwise direction. As this is accomplished, bell crank 29 rotates with ratchet Wheel 26. However, with the raising of the pressure pad assembly the pawl release 33 has been raised to the position where it will immediately be engaged by pin 32 lifting the pawl 3! from engagement with the ratchet wheel 26, and the bell crank to which pawl 3| is attached is freed from the ratchet wheel. Bell crank `29 is free to rotate about shaft 21. It rotates under its own weight until it strikes the stop 34. This allows cable 30 to hang loosely permitting free fall of the pressure pad assembly whenthe sear 39 is tripped. Pawl 3i remains out of engagement with the ratchet wheel 26 until the pressure pad assembly drops. When the pressure pad assembly drops, pawl release assembly 33 drops with it and the pawl f 3l `engages the ratchet wheel 26.

After the Weight of the pressure pad assembly is .removed from the cable 30, the sear 39 is the only thing holding the assembly in its cocked position. The weight of the assembly moves the sear down by reason of slot 49, stretching spring 42. This moves the sear down far enough that it will be in the path of trigger 38.

As a precautionary measure, a second cable 64 is provided attached to shaft 21 and to the arm 23, This cable 64 is provided to stop the free -fall of the pressure pad assembly in the event the same is tripped at a time when no batten roll is in position under the same.

It will be clear from the above that I have developed a festooning device which is easy to operate and which is certain of applying pressure to the batten roll at exactly the proper moment to most advantageously clamp the sheet material between the pressure pad and the batten roll.

While I have illustrated a preferred embodiment of my invention, it will be understood that the same is not so limited but may be otherwise embodied within the scope of the following claims.

I claim:

1. In a festooning device for directing a continuous web of sheet material onto supporting members, the combination comprising a hook for engaging the supporting member tbl move it into engagement with the web of sheet material, a pressure pad assembly positioned over the path of travel of the` supporting member, said pressure pad assembly comprising a resilientl material-engaging surface, a bell crank to elevate'the pressure pad assembly, and a sear to hold the Ysame in inoperative position; a trigger carried by the hook to actuate the sear yto release `the pressure pad assembly at the time the supporting member is positioned therebeneath, and common means for moving said hook and actuating said bell crank.

2. In a device for directing a continuous web of sheet material to form festoons on supporting members, the combination comprising a pressure-applying device for holding the Web of sheet material in engagement with the supporting member While the festoon is being started, a bell crank for raising the pressure-applying device from engagement with the web of sheet material, a sear for holding the pressure-applying device in inoperative position, means disposed on the festooning device for moving the supporting members in a horizontal path passing through under the pressure-applying device, a trigger positioned on said supporting member moving means to release the sear to bring the pressureapplying device into engagement with the web of sheet material disposed over the supporting member, and common means for actuating both the supporting member moving means and the bell crank.

3'. In a device for directing a continuous Web of sheet material to form festoons on supporting members, the combination comprising a pressure-applying device for holding the web of sheet material in engagement With the supporting member While the festoon is being started, a bell crank for raising the pressure-applying device from engagement With the material, a sear for holding the pressure-applying device in inoperative position, a movable hook disposed on the festooning device, said hook being so positioned as to engage the suporting members to move the same in a horizontal path passing through under the pressure-applying device, a trigger positioned on said hook to release the Sear to bring the pressure-applying device into engagement with the web of sheet material disposed over the supporting member, and common means for actuating said hook and said bell crank.

4. In a device for directing a continuous web of sheet material to form festoons on supporting members in a curing chamber, the combination comprising a pressure-applying device for holding. the web of sheet material in engagement with the supporting member While the festoon is being started, a bell crank for raising the pressure-applying device from engagement with the web of sheet material, a sear for holding the pressure-applying device in inoperative position, a hook disposed on the festooning device and so positioned as to move the supporting members in a horizontal path passing through under the pressure-applying device, a trigger positioned on said hook to release the sear to bring the pressure-applying device into engagement with the Web of sheet material disposed over the supporting member, common means for actuating both said hook and said bell crank, and means for holding the hook in a xed position While said bell crank is being operated to raise the pressure-applying means.

5. In a device for directing a continuous web of sheet material to form festoons on supporting members, the combination comprising a pressure-applying device for holding the Web of sheet material in engagement with the supporting member While the festoon is being started, a bell crank for raising the pressureapplying device from engagement with the web of sheet material, a sear for holding the pressure-applying. device in inoperative position, a

hook disposed on the festooning device and so positioned as to move the supporting members in a horizontal path passing through under the pressure-applying device, a trigger positioned on said hook to release the sear to bring the pressure-applying device into engagement with the web of sheet material disposed over the supporting member, common means for actuating both said hook and said bell crank, and a ratchet on the hook assembly for engagement with a pawl for holding the hook assembly in a fixed position While said bell crank is being operated to raise the pressure-applying means.

6. In a device for directing a continuous web of sheet material to form festoons on supporting members, the combination comprising a pressure-applying device for holding the web of sheet-material in engagement with the supporting member while the festoon is being started, a ratchet Wheel and a bell crank for raising the pressure-applying device from engagement with said Web of sheet material, a sear for holding the pressure-applying device in inoperative position, a hook disposed on the festooning device and so positioned as to move the supporting members in a horizontal path passing through under the pressure-applying device, a trigger positioned on said hook to release the sear to bring the pressure-applying device into engagement with the web of sheet material disposed over the supporting members, and common means for actuating both said hook and said bell crank.

'7. In a device for directing a continuous web of sheet material to form festoons on supporting members in a curing chamber, the combination comprising a pressure-applying device for holding the web of sheet material in engagement with the supporting member While the festoon is being started, a ratchet Wheel and a bell crank for raising the pressure-applying device from engagement with the web of sheet material, a pawl attached to said bell crank for engagement with said ratchet Wheel to impart rotary movement to the bell crank, a sear for holding the pressure-applying device in inoperative position, a hook disposed on the festooning device and so positioned as to move the supporting members in a horizontal path passing through under the pressure-applying device, a trigger positioned on said hook to release the scar to bring the pressure-applying device into engagement with the web of 4sheet material disposed over the supporting member, and common means for actuating both said hook and said bell crank.

8. In a device for directing a continuous We of sheet material to form festoons on supporting members, the combination comprising a pressure-applying device for holding the web of sheet material in engagement with the supporting member While the festoon is being started, a ratchet wheel and bell crank for raising the pressure-applying device from engagement with the Web of sheet material, a sear for holding the pressure-applying device in inoperative position, a pawl release to release the bell crank pawl from the ratchel wheel to permit the ratchet wheel to rotate separately while the pressureapplying device is in inoperative position, a hook disposed on the festooning device and so positioned as to move the supporting members in a horizontal path passing through under the pressure-applying device, a trigger positioned on saidhook to release the sear to bring the pressure-applying device into engagement with the web of sheet material disposed over the supporting member, and common means for actuating both said hook and said bell crank.

9. In a device for directing a continuous web of sheet material to form festoons on supporting members, the combination comprising a pressure-applying device for holding the web of sheet material in engagement with the supporting member while the festoon is being started, a bell crank for raising the pressure-applying device from engagement with the web of sheet material, a cable connected to said bell crank and said pressure-applying device, a sear for holding the pressure-applying device in inop.- erative position, a hook disposed on the festooning device and so positioned as to move the supporting members in a horizontal path passing through under the pressure-applying device, a trigger positioned on said hook to release the sear and bring the pressure-applying device into engagement with the web of sheet material disposed over the supporting member, and common means for actuating both n,said hook and said bell crank. W

10. In a device for directing a continuous web of sheet material to form festoons on supporting members, the combination comprising a pressure-applying device for holding the sheet material in engagement with the supporting member while the festoon is being started, a bell crank for raising the pressure-applying device from engagement with the web of sheet material, a scar for holding the pressure-applying device in inoperative position, a hook disposed on the festooning device and so positioned as to move the supporting members in a horizontal path passing through under the pressure-applying device, a trigger positioned on said hook to release the same and bring the pressure-applying device into engagement with the web of 10 sheet material disposed over the supporting member, and a chain for actuating said hook and said bell crank, said chain passing over a take-up sprocket to enable a portion of the chain to be used for rotating the bell crank while the hook is held in a fixed position.

1l. In a device for directing a continuous Web of sheet material to form festoons on support ing members, the combination comprising a pressure-applying device for holding the sheet material in engagement with the supporting members While the festoon is being started, a bell crank for raising the pressure-applying device from engagement with the Web of sheet material, a sear for holding the pressure-applying device in inoperative position, a hook disposed on the festooning device and so positioned as to move the supporting members in a horizontal path passing through under the pressure-applying device, a trigger positioned on said hook to release the chain to bring the pressure-applying device into engagement with the web /of sheet material disposed over the supporting member, and a continuous chain for actuating said hook and said bell crank, said chain passing over a spring-urged sprocket to enable a portion of the continuous sheet to be used for actuating the bell crank while the position of the chain carrying the hook is held in a fixed position.

EDGAR I. LEED.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 640,170 Barlow Jan. 2, 1900 1,952,261 Kerst Mar. 27, 1934