US2174728A - Printing machine - Google Patents

Description

Oct. 3, 1939. A. POTDEVIN 2,174,723

PRINTING MACHINE Filed Aug. 20', 1936 INVEN TOR. RDOLPM 7 0 to: vnv

. W ATTORN s.

Patent d oi.3', 1939 e I V 2 174 723 UNITED STATES PATENT OFFICE- PRINTING MACHINE ldolph Potdevin, Garden City, N. Y., assignor to Potdevin Machine Company, Brooklyn, N. Y., a corporation of New York I Application August 20, 1936, Serial No. 86,913

8 Claims. (Cl. 101 -248) This invention relates to improvements in drical bearing members are moved laterally for printing presses and is particularly directed to coarse adjustment. The inner ends of the memmeans for aligning the printing rollers to bars l4 and is are provided with slots I5 and properly register the printed matt r; II, respectively, removablyto receive the ends 5 In machines of the character indicated, in V of t e printing Shaft y the 5 printing sheets, bags or other separated articles shaft Ill can be removed when the bearin s l4 it is essential that the printing be always imand I6 are withdrawn sufilcientiy Outward of pressed in the same position on the article, and e machine to h Clea! 0f the ends of s s a in the past, due to slippage, it became necessary The pinionsM and 46 are carried on manually in frequently to stop the machine while the articles p a le s afts 45 and r sp y, these 10 were realigned. shafts being provided with thumb nuts 49 and 5|,

It is an object of the present invention to prorespectively, manual otat on of the same. vide a machine of the character indicated where- Knurled nuts 53 and 5 are o p v ded fo t e in the printing rollers can be adjusted transsh fts 45 and 41, respectiv y. wh e y o lo k versely and peripherally to print articles in the same adjusted positieh- M proper registe'r, Within the bearing M is provided a screw 48 Other objects of the present invention will be for fine! lateral adjustment of the P t manifest from the following description and the T0119! This screw is ead in t e Outer accompanying d i i h h d i end of the bearing'lt. The inner extremity of Fig. 1 is a plan view of an embodiment of my e screw 48 is jo d in a block 59 p d 20 invention; 7 to engage the end of the shaft ID. The outer Fig. 2 i i on t line 5-5 of Fig 1; end of this screw is provided with a head 52 to Fig, 3 i a i on t line 5 of 1; facilitate rotation of the screw. A wing nut 54 Fig. 4 is a section on the line 1-1 of Fig. l; isplovided 1501001; the screw 68 in adju P and ion. Fig. 5 is a plan view of the bearings for one of The opposite bearing l6 encloses a coil spring th printing 11 56 which abuts the end of the shaft l0 and the Referring to t drawing in detail; 2 desig end wall of the bearing. It will be obvious that mates part f the frame of the machine and upon rotationofthe screw #88 in a clockwise disupporting t drive Shah; 5 provided with a rection the shaft ill carrying the printing roller 30 d i gear 5 t one n there f geared v l2 Will be moved longitudinally transversely of suitable drive t shown) the machine against the tension of the spring 56 The shaft, 4 carries an impression roller 3 and on rotation of the screw 58 in an anti-clockwhich is fixed on the shaft, and parallel there- .wise direction sp in will force the shaft Ill with is a shaft l0 carrying a printing roller l2 and r0119! m the Opposite d rection. 35 fixed thereon The drive for the printing roller i2 is fro the The shaft I0 is removably mounted in'adjust gear through shaft Worm gee! p d able bearings l4 and I6 carried by the frame 2, to the Shaft by Screw 89, Worm wo m gear 84 to provide for lateral adjustment of the printing n Worm The wo m 86, worm gear 8 and 40 roller which .will be described more in detail Worm 82 are carried on a bracket 99 secured 40 hereinaften the fact of the gear 2!! which as above described Fixed t t shaft [0 d carrying th printis loose on the shaft. The gear 28 meshes with ing roller and hence fixed with respect to the the gee! Wh ch is fast on the shaft to and printing roller is a gear l8, this gear meshing h f to h printing roller.

with a loose gear 20 mounted on shaft t. As w b seen from Figsa d a ctor as r In the event of a lateral misalignment the s '1 Provided With fl ges I2 and E4 on its printing roller I2 is adjusted longitudinally inner a Outer edges r sp t vely is adapt d to transversely of the machine. This is accomcooperate with a friction roller is. This disc 10 plished by means of the bearings it and iii of is mounted on a stub shaft l9 carrying a handle 5 the printing roller shaft lil. Each of these bear- 8, whereby the disc may be rockedselectively to 5 ing members is in the form of a cylindrical tube, bring either of th an s 12 r H nt enea the member It being provided on. its exterior ment with the friction roller 16, so that as the with rack and member It with a similar rack bracket revolves the roller 16 will be rotated :12, in mesh with pinions t4 and at, respectively. in either direction. This roller is fast on the 55 Upon rotation of the pinions 44 and 66 the cylinshaft Tl carrying the worm 82. It will be obvious 55 roller 16 will effect a momentary speeding up or slowing down of the gear 20, thereby' efiecting peripheral adjustment of the printing roller.

The disc!!! is provided with a lip Hill for receiving springs ml and I02 which have their other ends anchored to the frame 2 of the machine. These springs are for holding the disc 10 in neutral position, that is, out of engagement with the friction roller l8.- 9

It will be appreciated from the foregoing description of the present invention that I have provided a device wherein when any. misalignment or non-registry of the printed jmatter is discovered the same, whether peripheral or lateral, can be readily rectified by simple adjustments while the machine is operating.

It is to be understood that various changes and modifications may be made in the structures herein illustrated and described without departing from the spirit and scope of my invention.

i What I claim is:

1. A device of the class described comprising a pair of rollers, means for driving the same, the

bearings for one of said rollers being mounted to' move transversely of the device, and means for moving said bearings to adjust the roller carried thereby longitudinaly while the rollersare rotating.

2. A device of the class described comprising a pair of driven rollers, bearings therefor, the bearings of one of said rollers being mounted for movement transversely of the device, and rack and pinion mechanism for moving saidlbearin'gs to efiect longitudinal adjustment of the roller carried thereby.

3. A device of-the class described comprising a pair of driven rollers, hollow' bearings for one of said rollers, adjusting means within said bearings for-eifecting longitudinal adjustment of the roller carried thereby, said bearings being adjustable transversely of the machine, a rack carried by each of said bearings and a pinion cooperating with each of said racks to adjust said bearings.

'4. A device of the class described comprising a pair of rollers, means for driving one of said rollers, cooperating gearing to drive the other of said rollers, and friction means for rotating one of said rollers through said gearing to alter the peripheral setting thereof with respect to the other roller.

5. A device of the class described comprising a printing couple, a drive therefor, a friction roll- -er, means for selectively rotating said friction roller in either direction, said friction roller being so connected to said drive as to advance or retard one of the rollers 01 the printing couple to adjust the same peripherally with respect to the other roller of the couple.

6. A device of the class described comprising a printing couple, a gear drive therefor, a friction roller, a shaft therefor, a worm drive connected to said shaft and to said gear drive, a manually controlled member for selecting the direction of rotation of said friction roller to advance or retard said gear drive through said worm drive to adjust the peripheral setting of one of the rollers of the couplewith respect to the other.

v 7. A device of the class described comprising a printing couple, a gear drive therefor, a friction roller, a shaft therefoiyaworm drive connected to said shaft and to said gear drive, a flanged disc, means for oscillating said disc to bring the flanges thereof into engagement with said friction roller to select its direction of rotation whereby to alter the peripheral setting 01 one of roller.

8. A device of the class described comprising an impression roller, a printing roller, a gear fixed to the printing roller, a drive from the impression roller to the printing roller including a loose gear in mesh with said first mentioned gear,

the rollers of the couple independent of the other.

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