US2105715A - Burling table - Google Patents

Description

Jan. 18, 1938. H. w. BIRCH BURLING TABLE Filed July 24, 1936 2 Sheets-Sheet l m d WWW ....d m T O L b Jan. 18, 1938. w, cH 2,105,715

BURLING TABLE Filed July 24, 1936 2 Sheets-Sheet 2 FigZ.

lnvenTor. Horcfld W. Birch Patented Jan. 18, 1938 UNITED STATES FATE FFICE 8 Claims.

This invention relates to a burling table such as is used for inspecting cloth, and one of the objects of the invention is to provide an improved hurling table which is constructed so that the di- 3, rection of movement of the cloth over the inspection table canbe reversed so as to bring back onto the inspection table some portion of the cloth which has once been drawn over said table but which the operator desires to re-inspect.

Another object of the invention is to provide improved and simplified means for controlling the operation of the machine.

A further object is to provide a burling machine with an inspection board having a belly-board at its upper edge over which the cloth is drawn as it is fed to the table so that the cloth will come onto the inspection table in a smooth condition free from wrinkles.

A further object of the invention is to provide a burling table with a cloth-receiving truck element ontowhich the cloth is deposited after it has been inspected, the truck element being constructed so that it can readily be trundled away from the machine to convey the inspected cloth to any desired location.

Further objects of the invention are to improve generally cloth burling tables of this type in the particulars hereinafter set forth.

In the, drawings;

30 Fig. 1 is a side view with parts broken out showing a burling table embodying my invention.

Fig. 2 is a view looking from the right in Fig. 1.

Fig. 3 is a sectionon the line 3-3, Fig. 2.

Fig. 4 is a section similar to Fig. 3 but showing the action of the one-Way driving connection in reversing the direction of the roller 1.

Fig. 5 is a sectional View showing the frictional drag on the roller IQ The machine comprises a suitable supporting frame I on which is mounted the inspection board Zover which the cloth 3 to be inspected is fed, said cloth preferably being fed downwardly over the inspection board from the top to the bottom as shown by the arrow a. This inspection board is .15 preferably made with a transparent portion of 7 ground glass or similar material and with means for illuminating the transparent portion 4 from the back side. With this illumination back of the cloth any imperfections therein such as mispicks, knots,,slubs, etc. showup very plainly and can be easily detected.

Any suitable means for illuminating the window portion 4 of the inspection board may be em ployed, and as herein shown there is provided a box-likecasing 5 beneath the inspection board within which is located electric lights 6. The interior of the casing 5 may be provided with a light-reflecting surface to increase the illumination of the cloth.

The cloth 3 is led to the inspection board over 6 a guide roll 1 which is mounted in suitable bearings l0 and which also acts as a reversing roll, as will be presently described, and thence over a belly-board 8 at the top edge of the inspection board. The purpose of the belly-board is to smooth out any wrinkles in the cloth so that it will be delivered to the inspection board in a smooth condition free from wrinkles.

The cloth is drawn downwardly over the inspection board by means of a feed roll 9 whichris rotatably mounted and is situated beneath and in the rear of the inspection board 2. The feed roller 9 is power-driven and any suitable means for rotating it may be employed. In the construction herein shown I have provided a motor 0 ill for this purpose which is mounted on the frame and which is connected through a suitable gear-reducing mechanism I I to a shaft l2 carrying a pulley 13 which is belted by means of a driving belt M to a pulley IE on the shaft l6 of the feed roll 9.

Situated at the lower edge of the inspection board 2 are two guide rollers IT and I 8 which direct the cloth in its movement from the lower edge of the inspection board to the feed roller 9.

I9 indicates a plaiting or cloth-folding device through which the cloth passes as it is delivered from. the feed roll 9 and which folds the cloth in a pile, as shown at in Fig. 1.

The plaiter is of the usual type comprising a box-like structure through which the cloth passes and which is pivotally mounted to oscillate back and forth. This plaiter is shown as being supported on arms 2i that are pivotally mounted on the shaft l5, and it is given its oscillating movement through a link 22 which is pivoted at one end to one of the arms 2| and at the other end to a crank pin 23 carried by a crank disk 24. The crank disk is driven from the shaft I6 for which purpose said disk is in the form of a sprocket wheel having teeth which mesh with a sprocket chain 25 that encircles and is driven by a sprocket wheel 26 on the shaft IS.

The inspection board 2 is mounted so that it can be placed in different angular positions to suit the convenience of the operator, and for this purpose said inspection board is pivotally connected at its lower end to the frame I as shown at 27 and it is held in the desired angular position by means of brace members 28 which are pivoted movement of the cloth.

' so that when the cloth is surface at their upper ends to the inspection board as shown at 2%, and at the lower end have notches 38, one of which is adapted to engage a pin 3| carried by the frame. By bringing the different notches 38 into engagement with the pin 3| the inspection board can be set at different angular positions.

I have referred above to the guide roll I over which the cloth is fed as it is delivered to the inspection board. This roll 1 is constructed so that it also functions as a reverse roll for drawing the cloth backwardly over the inspection board whenever it is desired to reverse the direction of For this purpose said roll i is provided with a friction surface such as would be given by covering the roll with sandpaper, emery cloth or the like and is constructed being fed forwardly, as shown by arrows in Fig. 1, said roll acts merely as an idler which is turned by the movement of the cloth. When, however, it is desired to reverse the direction of movement of the cloth then the motor it is reversed which will result in reversing the direction of movement of the feed roll 9, and at the same time the roll I is connected to the feed roll 9 so as to be rotated positively in a reverse direction, the surface speed of the roll 7 in its reverse movement being slightly greater than the surface speed of the roll 9 so that the roll "I will not only draw the cloth backwardly over the inspection board but will keep the cloth under tension.

The roll I is formed with an annular brake 32 which is partially encircled by a brake band 33, one end of the latter being secured to a fixed arm 34 and the other having a weight 35 attached thereto. A retarding drag is thus given to the roll I, and as said roller is rotated counter-clockwise Fig. 1 while the cloth is being fed forwardly due to the friction engagement of the cloth with the friction surface of the roller the retarding drag on the roller serves to apply sufficient tension to the cloth between the guide roll 1 and the feed roll 9 so that the cloth will lie flatly against the inspection board.

For reversing the direction of movement of the guide roll 1 when the direction of rotation of the feed roll 9 is reversed there is provided a oneway driving connection between the feed roll 9 and the roll I, which one-way driving connection is inoperative when the feed roll 9 is moving forward but which becomes automatically operative when the direction of rotation of the feed roll 9 is reversed.

The shaft it of the feed roll 9 has a pulley 35 fast thereon which is connected by a crossed belt 3? with a pulley 38 that is loose on the shaft 39 of the roll '3. The one-way driving connection herein shown comprises a collar 4i) fast on the shaft se of the roll 1 and provided with a plurality of laterally-extending clutch projections ii, and a dog .2 pivoted at 43 to one side of the pulley 33 and cooperating withsaid projections 41 to drive the roll 1 in a reversed direction while allowing said roll to rotate freely in. a forward direction. The feed roll 9 and the combination guide roll and reversing roll I are shown as having the same diameter, but the pulley 38 is slightly smaller than the pulley 36 so that the pulley 38 will have a higher R. P. M. than the pulley 3S and the feed drum 9.

When the cloth is being fed forwardly the shaft 39 and collar to are rotating in the direction of the arrow 1) in Fig. 3 and the pulley 38 is also rotating in the same direction as indicated by the arrow .0. The pulley 38, however, has a slightly higher R. P. M. than the shaft 39 so that the dog 42 keeps overtaking and passing the pins 4!. As this dog :32 overtakes and passes any pin 4% it will simply click over the pin, it being understood that the roll I is being moved forwardly in the direction of the arrow b only as fast as the cloth is being fed.

If, now, the motor 10 is reversed, thereby reversing the direction of the feed roll 9, this operation will result in reversing the direction of rotation of the pulley 38, since said pulley is belted to the pulley 35 which is rigid with the feed roll 9. When this reversal takes place the pulley 38 will be rotated in the direction of the arrow (1 in Fig. 4 and the fiat face M of the dog G2 will be brought into contact with one of the pins 4|. The stop 63 prevents turning movement of the dog at this time so that the rotation of the pulley 35 is transmitted to the shaft to and to the roll I, thus positively rotating the roll I in a" reverse direction. Inasmuch as the driving connection between the rolls 7 and 9 is such that the pulley 38 will be rotated at a slightly higher R. P. M. than the roll 9 the result is that the roll I, when it is reversed, has a greater surface speed than the roll 9. During the reverse movement of the roll 9 it picks up the cloth from the pile 2E! and when the direction of movement of the roll I is reversed the latter then becomes a feed roll which draws the cloth backwardly over the inspection board. Due to the fact that the roll I is rotating at a slightly greater surface speed than the roll 9 the cloth will thus be held under tension between the rolls l. and Q and will be held flat against the inspection board. When the roll 1 is thus reversely rotated the friction between the brake band 33 and the brake surface 32 tends to lift the weight 35, thereby relieving the braking or dragging action of the brake band. The motor 10 is controlled by a suitable reversing switch indicated diagrammatically at 45 and I have provided simple means herein by which the operator can control the switch by a knee movement. The switch 45 has a connection 46 which is pivotally connected to the lower end of an arm il rigid with a shaft 48 that extends across the machine at the lower edge of the inspection board and is mounted in suitable bearings. Fast on the shaft is a handle 49 by which the shaft may be turned to actuate the switch 45 through the connecting member 46.

5!) designates a knee-board which extends across the front of the machine and is supported on two arms 5! that are pivotally mounted on the shaft 48, this board being at the right height so that the operator can readily press against it with his knee. 52 indicates a latch by which one of the arms 5! can be latched to the arm 41 so that when the knee-board 50 is pressed inwardly an inward movement will be communicated to the arm 4'! and connection 45 to operate the switch 45, thereby to close the motor circuit. This latch 52 is shown as pivoted at 53 to the arm 5!, and it is provided with a notch 54 adapted to receive a pin 55 carried by the arm 41.

When the latch is in its operative position shown in Fig. 1 then the knee-board 5% is coupled to the arm 4'! so that the switch i-5 may be operated to close the motor circuit by pressing the knee-board inwardly into the dotted line position, Fig. 1, and it will be necessary for the operator to maintain the pressure against the knee-board in order to hold the motor circuit closed. When the operator releases the pressure on the kneeboard it will gravitate into the full line position, Fig. 1, thereby opening the motor circuit. If it is desired to reverse the motor the operator grasps the handle 49 and moves the latter inwardly into the dotted line position, Fig. 1, thereby moving the connection 46 outwardly. The belly board 8 is operative to remove any wrinkles from the cloth when the latter is being fed backwardly by the reversing roll 1 as well as when the cloth is being moved forwardly by the feed roll 9.

56 indicates a truck on which the cloth is received as it is delivered from the folder IS. The frame I is open on one side so that the truck can be run into the frame and placed in position to receive the cloth as shown in Fig. l, and when the full length of cloth has been delivered onto the truck the latter may be withdrawn from the frame I, as shown by dotted lines, and trundled to any location where it is desirable to deliver the cloth. At the two sides of the frame I adjacent the open side through which the truck passes as it is placed in the cloth-receiving position or removed therefrom, the corner posts of the frame are connected by the members 58 which serve as guides for the truck as it is being trundled into cloth-receiving position,

When it is desired to remove the truck 56 the latch 52 may be disconnected from the pin 55, thereby freeing the knee-board so that the latter may be swung out of the way of the truck and the load of cloth thereon. When the latch is disconnected the switch may be operated entirely by hand if desired.

While I have shown a selected embodiment of my invention I do not wish to be limited to the constructional features shown as various changes may be made without departing from the invention.

I claim:

1. A burling table comprising a supporting frame, an inspection board carried thereby, a feed roll for feeding cloth forwardly over the inspection board, a guide roll over which the cloth passes as it travels to the inspection board, means to rotate the feed roll either forwardly or backwardly, and a one-way driving connection between the feed roll and the guide roll which is operative when the feed roll is rotated backwardly and is non-operative when the feed roll rotates forwardly.

2. A burling table comprising a supporting frame, an inspection board carried thereby, a feed roll for feeding cloth forwardly over the inspection board, a guide roll over which the cloth passes as it travels to the inspection board, means to rotate the feed roll either forwardly or backwardly, and acne-way driving connection between the feed roll and the guide roll which permits the guide roll torotate freely forwardly by frictional engagement with the cloth when the feed roll is rotating forwardly and which positively rotates the guide roll backwardly when the feed roll is rotated backwardly.

3. A burling table comprising a supporting frame, an inspection board carried thereby, a feed roll for feeding cloth forwardly over the inspection board, a guide roll over which the cloth passes as it travels to the inspection board, means to rotate the feed roll either forwardly or backwardly, and a one-way driving connection between the feed roll and the guide roll which permits the guide roll to rotate freely forwardly by frictional engagement with the cloth when the feed roll is rotating forwardly and which positively rotates the guide roll backwardly at a surface speed greater than that of the feed roll when the latter is rotated backwardly.

4. A burling table comprising a supporting frame, an inspection board mounted thereon, a feed roll for feeding cloth over the inspection table, means to rotate the feed roll either backwardly or forwardly, a guide roll over which the cloth passes as it travels to the inspection board, said guide roll receiving its forward rotation by frictional engagement with the cloth, means to apply a braking drag to the guide roll during its forward movement, and means to rotate the guide roll positively in a reverse direction when the feed roll is reversely rotated.

5. A burling table comprising a supporting frame, an inspection board mounted thereon, a feed roll for feeding cloth over the inspection table, means to rotate the feed roll either backwardly or forwardly, a guide roll over which the cloth passes as it travels to the inspection boardv said guide roll receiving its forward rotation by frictional engagement with the cloth, means to apply a braking drag to the guide roll during its forward movement, and means to rotate the guide roll positively in a reverse direction when the feed roll is reversely rotated but at a greater surface speed than the feed roll.

6. A burling table comprising a supporting frame, an inspection board mounted thereon, a feed roll for drawing the cloth over the inspection board, a motor for operating the feed roll, a switch for controlling the motor, and a knee-board pivotally hung at the front of the machine and adapted to be actuated by the operators knee and by which the switch is operated.

7. A burling table comprising a supporting frame, an inspection board mounted thereon, a feed roll for drawing cloth over the inspection board, a reversible motor for operating the feed roll, a switch for controlling the motor, a manually operated handle for controlling the switch, a swinging knee-board at the front of the machine adapted to be actuated by the operators knee, and a latch for connecting said knee-board to said manually operated control handle.

8. A burling table comprising a supporting frame, an inspection board carried thereby, a feed roll for feeding cloth forwardly over the inspection board, a guide roll over which the cloth passes as it travels to the inspection board, means to apply a braking action to said guide roll, means to rotate the feed roll either forwardly or backwardly thereby to feed the cloth either forwardly or backwardly, and a one-way driving connection between the feed roll and the guide roll which is operative when the feed roll is rotated backwardly and is non-operative when the feed roll rotates forwardly.

HAROLD W. BIRCH.

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