US2526469A - Piercing and printing method - Google Patents

Description

Oct. 17, 1950 o. J. GARLOUGH ET AL 2,526,469

PIERCING AND PRINTING METHOD Filed Aug. 13, 1946 5 Sheets-Sheet 1 7'? Z attorney 7 Oct. 17, 1950 o. J. GARLOUGH ET AL PIERCING AND PRINTING METHOD Filed Aug. 15, 1946 5 Sheets-Sheet 3 "A V Il ////fl\\ L florneg Oct. 17, 1950 o. J. GARLOUGH ETAL 2,525,459

PIERCING AND PRINTING METHOD 5 Sheets-Sheet 4 Filed Aug. 13, 1946 I \WI Q 3 meme rs Qflorneg Oct. 17, 1950 0. J. GARLOUGH ET AL 7 2,526,469

PIERCING AND PRINTING METHOD 5 Sheets-Sheet 5 Filed Aug. 13, 1946 3nuentms attorncg Patented Oct. 17,

2,526,469 7 PIERCING AND PRINTING METHOD Owen J. Garlough and Harry M. Stewart,

' Springfield, Ohio Application August-13, 1946, Serial No. 690,265 2 Claims. (01. 101-42) This invention relates to a printing device and more particularly to a printing. device for printing on sheet material that may be provided with an ink-repellent surface, such as waxed paper used in wrapping food, as for example, bread, wafers, et cetera, although not necessarily limited to this usage.

In wrapping bread and other similar Commodities, waxed paper may be usedlas the outer wrapper. This protects. the bread from the elements and. it also prevents; evaporation or drying o'ut'of the leaf. This-wrapping. material. formsivaluable advertising space. That being the case, it is common practice to print advertising! material on the paper used i n wrapping. breadbeforethepa- 1 per is waxed. After the paper ,has beenlw ax'ed, printing refusesto adhere to't'he 'waxed'sur face. The wrapping paperis preferably, printed in large quanti'ties' and stored in readiness'ffor use.

If the price is printed on the 'wrappingin aterialv before the waxing operation, may result in r e e im s. 1 .1 e ri ma er al be Cf e9 use in the event of ,a price'change. Some manue platen has an irregular surface, the surfaceir g -H ularities of the platen and of the imprinting mechanism are complementary, to thereby rough en the record material to facilitate the printing.

thereon. M

Other objects and advantages reside in thecon sfiruc'ti'on of parts, the combination tnerecf and the mode of operation, as will become more apparent from the following description.

Referring to the drawings, .Figure l is a. side elevational view of a bread wrapping machine showing the attachment mounted thereon.

Figure 2 is an enlarged fragmentary perspec tive view of areciprocatorycarriage functioning in response to the tension oft-he wrapping paper. Figure 3 is an enlarged fragmentary'cross sec tional view taken substantially on the line ii- 3 of Figure 1.

facturers havegoneto the e pense ofwrapping a separate ribbonfof paper around theloaf eith outsideor inside of'the. boncontains thefprice'} ,Then, inthe eventof a price change, onl y the printinginaterial o'nthe, ribbon'n'eedst be changed. How'e've'nthi's an expensive procedure; requires complicated mean anisrn and therefore is objectionable. I

the device disclosed re n 9 n e ie iq overcome all e these ,difljiculties layprinting or.

stamping-then a 2m roughened surface of the waxed paper, n s h vided with a surface where ink will adhere. Furthermore, theprice: is :stampedzonthe wrapping paper between the roll and the wrapping mechanism. Merely by changing plates-orv stamps, .it is possible to'ch a'nge' the stamped price, so that if a bakery supplies'a ten centl o'af, a'twelve cent loaf. and a tom-teen cent loaf, all of .theseloaves may be wrapped. on the'sam'emachine and the proper price priht'edon the wrappenby merely.

changing the type oripl'ate'useda Another object- 0f this invention is to provide a prin .ng devicefor printin als provided with ish, wherein the or mutilated as far as the are concerned, so as to providea surface adaptable for printing. Another object of this inventionis to provide an attachment i 'r' a wrapping 'machine wherein the atta 'ent include printing device for printing" tithe wrappr material as it is fedv into the machine, the printing clevieebeing halt Waxed. paper, "which this roughened serrate being pro- 7 on sheet matert. --repe ant surface or fin-' surface is roughened or i ink-'repell'ant properties Figure 4 is a top plan viewi o-f a bread wrapping machine showing the attachment mounted there- Figure! is an enlarged fragmentary top-plan view of a portion of the wrapping machine.

Figure 6 is a transverse cross sectional view showing the gear sector used in actuating the in? printing mechanism.

Figure 7 is a cross" sta ntially on the line of Firnire 5.

Figure 8 is another cross sectionalview simlar to Figure 1, showing the imprinting mechanism in a transition position.

Figure 9 is another cross sectional i' iew showing the imprinting mechanism in "the printing Figure 15 is a cross sectional view taken substantially on the line l5-! 5 of Figure 14.

Figure 16 is a perspective, fragmentary view of the platen.

Figure 1'7 is an enlarged cross sectional view of the platen and the imprinting mechanism as it appears during the printing operation.

Figure 18 is an enlarged cross-sectional view of sectional view takensizbto the wrapping material as it appears after it has been printed.

In view of the fact that the imprinting mechanism is shown as an attachment for a bread wrapping machine, only so much of the bread wrapping machine will be described that has a bearing upon the operation and function of the printing mechanism. The bread wrapping machine per se does not form a part of this invention and will not be described in detail.

In the drawings, the reference characters and 22 indicate the main frame members of the bread wrapping machine. These frame members are held in fixed spaced relation by suitable tie rods 24. The frame members are provided with extensions 26 and 28 for supporting rolls of Wrapping paper 30 and 32. One of these rolls supports the inner wrapper and the other roll supports the outer wrapper. In the arrangement shown herein, the roll 30 supplies the outer wrapper. No further description is deemed necessary of the roll 32.

The wrapping paper advances from the roll 30 under'an idler roller 34, upwardly over a second idler roller 36, downwardly under a roller 38 and then under the price printing mechanism 40 to a pair of feed rollers 42 and 44. The feed rollers operate intermittently to advance the paper through the wrapping mechanism. Either one or both of the feed rollers 42 and 44 is preferably provided with a resilient covering, such as sponge rubber, so as to eilectively grip the paper.

To the right of Figure 4 is shown a conveyor 50 which supplies loaves of bread to the bread wrapping mechanism. A loaf of bread 54 has been shown approaching the end of the conveyor. When the loaf of bread 54 comes to the end of the conveyor 50, it is wrapped in paper by suitable mechanism. It is not deemed necessary to describe the wrapping mechanism, as this mechanism per se does not form a part of the invention.

The bread wrapping mechanism operates cyclically. When a loaf of bread is advanced by the conveyor 50 towards the bread wrapping mechanism, the loaf engages the trigger 52 which causes the feed rollers 42 and 44, through a suitable driving mechanism which has not been shown, to rotate for a predetermined period of time, so as to feed a needed quantity of paper through the bread wrapping mechanism sufficient to wrap a loaf. The loaves are usually fed to the bread wrapping mechanism at predetermined intervals. If, for some reason, a loaf is omitted, no paper is advanced through the bread wrapping machine for the blank space that would normally be filled by the loaf, to thereby save upon paper and prevent clogging of the mechanism.

Whenever the feed rollers 42 and 44 are set in motion, the feed rollers rapidly feed the paper to the bread wrapping mechanism. If the paper were to be withdrawn directly from the rolls and-the rolls 30 and 32 were comparatively full of paper, it can readily be seen that a sudden jerk of the paper might tear the paper, rather than to rotate the rolls of paper. In order to overcome this difficulty, the roller 36, as may best be seen by referring to Figure 2, is mounted in a frame including the frame members 68 held infixed spaced relation by a tie rod 62 and a brace 64. Each of the members 50 is provided with later-allydisposed channel guide members 68, as best seen in Figure 3. Each of these guide members 55 engage a flange 68 of angle bars or irons ls fixedly secured to the frame members 20 and 41 22. The roller 36, together with the frame including frame members 60, is normally biased into the up position shown in Figure 2, by a pair of compression springs l2 positioned between the angle brackets 74, secured to the frame members 60, and suitable stops 7%, as shown in Figure 1, which stops it are attached to the main frame members 20 and 22. When the feed rollers 42 and 44 are rapidly rotated to advance the piece of paper through the bread wrapping machine, the compression springs l2 are compressed, so as to permit the roller 36 to be lowered, thereby causing the shock of a sudden jerk caused by rotating the feed rollers 42 and 44, to be absorbed by the roller 38 yielding against the force of the springs 12. The rolls of paper 30 and 32 begin to unwind paper at a comparatively slow speed, so that when a suflicient quantity of paper has been withdrawn and the rolls 4!) and 42 come to a stop and the roller 35 is in the lowermost position, the rolls 30 and 32 will continue to rotate. The slack is taken up by the roll 36 advancing to the uppermost position. By this time the rolls 30 and 32 may come to a rest, so that the mechanism is ready to repeat another cycle of paper feeding when a succeeding loaf engages the trigger 52.

When loaves are fed regularly to the bread wrapping mechanism without interruption, the roller 36 and the parts associated therewith continue to reciprocate up and down, so as to maintain a substantially uniform motion of the rolls 30 and 32. This slack absorbing mechanism is standard equipment upon the bread wrapping machine and has been described only for the reason that the operation of this slack absorbing mechanism is utilized in connection with the price printing mechanism, as will appear more fully later.

In addition to the above described mechanism, the paper wrapping machine includes an elevator mechanism including a transverse elevator member mounted upon a pair of guides 92 that cause the elevator member 90 to travel through a vertical path. The elevator 90 is actuated by a pair of arms 94 pivotally attached to the elevator 90 and to a crank arm 96 mounted upon a rocker shaft 98, causing the crank arm 96 to oscillate through a semi-spherical path. This rocker shaft 98 is driven continuously, so that the elevator 90 is raised and lowered as a part of the bread wrapping mechanism, whether a loaf of bread is supplied to the bread wrapping mechanism or not.

Price printing mechanism The price printing mechanism includes a base I00 provided with a pair of transverse bars I02 and I04. This base is secured to the paper wrapping machine in any suitable manner. The bar I02 has fixedly attached thereto, a plate member I06, having journalled therein the drive shaft I08 and secured thereto a supporting rod H0. The transverse bar I04 supports a plate II2, having journalled therein the opposite end of the shaft I08, and supports the end of the rod II0 held in position by a pair of nuts H4.

The price printing mechanism per se, as may be best seen in Figures 4 to 9 inclusive, includes a U-shaped frame member I20 mounted for oscillation on a tubular sleeve I22 keyed to the drive shaft I08. The U-shaped member I20 supports a bracket I24, shown in Figures 5 and 6, provided with an arcuate recess normally engaging the rod I I0. Member I26 is pivotally atta'ched at I28 to the bracket I24 in such a manner that the ends of bracket I24 and member I25 remote from the frame member I20 are urged toward each other by a tension spring I30. This tends to maintain the Ushaped member in a predetermined angular position with respect to the plane common to the longitudinal axis of the shaft I08 and the rod- I I0. The frame member I20 may rock on the shaft I00, as will appear more fully from the description that follows.

The frame member I20 supports a cylindrical member I32 having a pair of flanges I34 and I35; one in either end thereof. The cylindrical member I32 is provided with a flattened surface I36 supporting a plate I38, provided with bevelled edges I40. This plate I38 has mounted thereon a printing plate I-made of rubber, or any other suitable resilient material. This rubber plate I50 has the desired characters, letters or numerals, as the case may be, formed therein, and is preferably vulcanized or otherwise secured to a metal plate I52 provided with reentrant flange portions I54 adapted to engage the bevelled edges I90 of the'plate I38.

The flange I34 is provided with suitable notches to permit removal of the plate I50 by merely sliding the plate I50 endwise, so as to expel it from the supporting plate I38. This may be done at-the time that the plate I501 is in the position shown in Figure 8.

The cylindrical member I32 is secured to a shaft I80 by a suitable set screw I82. The shaft I89 is oscillated from the position shown in Figure 7 to the position shown in Figure 9' by a suitable drive mechanism which will be described later. An inking roller I64 is mounted upon the shaft 186 secured to the flanges I34 and I35, so

'as to oscillate with the cylindrical member I32.

This inkling roller I64, when the cylinder is in the position shown in Figure '1, engages an inking pad I68 secured to a supporting member I10 secured to an angle bracket I12 by suitable screws I13. The angle bracket I12 is positioned in engagement with the ends of the legs of the U- shaped frame member I20 and held in position by a helical spring I14, having the ends secured to pintles I10 fixedly secured to the legs of the U-shaped member I20. This provides a yieldable support for the inking pad I68. While in this position a plate I18, pivotally mounted upon a rod I80, having the end fixedly secured in the legs of the u-shaped frame member I20, and biased in a clockwise direction by a spring I82, contacts the face of the printing plate I50, so as to ink the plate. The spring I82 is wrapped or wound around the rod I80 and has the free end I84 hooked into a suitable notch in member I20, as best seen in Figure 10. Ink is supplied to the'p'late I18 by the inking roller I04, forming a rolling contact with the plate I18 wheneverv the cylindrical member I32 is oscillated.

The driving mechanism for the cylindrical member i3 2includes a pinion I90 fixedly secured in any suitable manner upon the end of the shaft I00. The pinion I90 is driven by a gear sector I92 non-rotatably mounted upon the tubular sleeve I22 held in position by a suitable screw I94. A collar I96 surrounds the sleeve I22 and is mounted for non-rotation upon the shaft I08 by a set screw I98 that threadedly engages a suitable aperture in the collar I96 and passes through a suitable aperture in the tubular sleeve 522 and engages a flattened surface 290 On the shaft I08. This flattened surface extends throughout the entire length of cause the frame member I20 to rotate,

6 the shaft I08. By loosening the screw I98; the printing mechanism may be adjusted along the shaft I08 and the supporting rod M0 to any desired position. When it has been properly located, it may be secured in position by tighten ing the screw I98 and thereby accurately position the printing device. A tubular spacing member 202 is mounted between the collar I93- and the leg of the U-shaped member I20 mounted adjacent the gear sector I92, so as to hold'the U-shaped frame member I20 in a fixed spaced relation with respect to the collar I96. The collar I96 is provided with a downwardly directed dog 2I0 adapted to engage an adjust'ably mounted set screw or stop 2 I2 threadedly engaging the base of the U-shaped member I20 and locked in adjusted position by a lock nut 2l4. As the drive shaft I08 is oscillated by a suitable oscillating mechanism or drive mechanism which will be described later, the gear sector I92 will rotate the pinion I90, so as to actuate the cylinder from the position shown in Figure '7 to the position shown in Figure 8, when the stop or dog 2I0 engages the stop 2I2, so as to ing the tension spring I30, so as to cause the plate I50 to be pressed against the wrapping paper from the roll 30 that is forced against a serrated platen 219- adjustably mounted between a pair of guide rails 22I and 223 mounted upon the base I and adjusted into proper position. The teeth in the platen 2I9 will pierce through the paper 30 and force the serrated or pierced portion of the paper 30 into the face of the rubber plate I50, providing broken surfaces in the wax, which broken surfaces permit the ink to saturate into the pierced paper to make the printing visible. As soon as the shaft I88 is permitted to rotate into home position shown in Figure 7, the tension spring I30 will raise the frame I20 into the position shown in Figure 7. The inking roller will engage the inking plate I18 and finally engage the inking pad. I10 inreadiness for another printing operation. At this time the printing plate I50 is in engagement with the inking surface on plate I18 in readiness for the succeeding printingoperation. The driving mechanism for the shaft I08 will nOW be described. r

As may best be seen by referring to Figures 4; and 11 to 15 inclusive, the driving mechanism for oscillating the shaft I08 includes an arm 220 secured to a tubular sleeve 222, which tubular sleeve has mounted thereon a collar-like portion 224 held in position by a suitable set screw 226. The arm 220 is provided with a brace 230 that also is seated on the tubular sleeve 222, but on the opposite side of the collar-like portion 224. The collar-like portion 224 is provided with a lug 232 having an aperture receiving an adjusting screw ,234 threadedly engaging a pintle 233 fixedly attached in the arm 220 and the brace 230. This is to adjust the angular position of the arm 220 with respect to the sleeve 222. The arm 220, as may best be seen by referring to Figure 4, is driven by a cable 238 attached to a bracket 240 secured to the elevator 90. As already described, the elevator 90 has a vertical reciprocatory movement and operates cyclically whenever the bread wrapping machine is in motion. This elevator, 90 continues its reciprocatory movement irrespective of whether there is a loaf of bread in the machine or not.

In order -to halt the operation of the printing stretch-' mechanism when there is no loaf of bread in the bread wrapping compartment of the machine, it is necessary to provide a mechanism for interrupting the operation of the printing mechanism during the cycle when the bread wrapping mechanism is idle. This has been accomplished by a releasable pawl mechanism for interconnecting the tubular sleeve 222 to the shaft I68, which mechanism will now be described.

As may best be seen by referring to Figure 13, the tubular sleeve 222 is provided with a flange 242 provided with a notch 244. A pawl 250, biased in a counterclockwise direction by a compression spring 25!, as seen in Figure 13, is pivotally mounted upon a pin 252 extending into the side wall forming a notch 254 in a hollow cylindrical member 256, integral with a tubular sleeve 258, secured to the shaft I68 by a set screw 260 normally engaged by a loop 252 of a torsion spring 264 having an end 266 positioned in contact with the rod H0. The spring 264 tends to rotate the shaft I08 in a counter-clockwise direction, as viewed in Figure 13. A cam sector 210 integral with a disc-like portion 212 is journalled on the tubular sleeve 222 and biased in a counterclockwise direction by a spring 289, as viewed in Figure 13. This spring 280 has one end attached to a screw eye 282, threadedly engaging a nut 284, used in clamping the rod H6 to the plate member or bracket E96. When the spring 280 is free to actuate the cam sector 211?, the cam sector 210 is rotated in a counterclockwise direction, as viewed in Figure 13, until it engages the set screw or stop 286 in member 256, shown in dotted position in Figure 13. When in this dotted position, the upper edge 288 of the cam sector 210 moves into a position, permitting the pawl 250 to rotate in a counterclockwise direction upon the pivot 252, so as to permit the end 290 of the pawl 256 to drop into the dotted position shown in Figure 13 in the path of the shoulder 292 of the notch 244. As the arm 226 is rotated, the shoulder 292 engages the pawl end 290, so as to rotate the cylindrical member 256 and with it the shaft I08, causing the gear sector I92 to rotate the pinion I90 to oscillate the printing cylinder to cause the printing plate to move into operative position, at which time the dog 2I6 engages the stop 212, causing the frame of the printing mechanism to oscillate to thereby cause the printing plate to move towards the arm 220, as best seen in Figure 17, to complete the printing operation.

A trigger 300 is pivotally mounted upon the pivot 302 fixedly attached upon the plate member I06. This trigger is biased in a clockwise direction, as viewed in Figure 11, by a tension spring 394 having one end mounted upon a pintle 306 fastened to the trigger 380 and the opposite end engaging a screw eye 308 threadedly engaging an aperture in the nut 284. The tension spring 304 urges the end 3) of the trigger into the path of the cam sector 270. Whenever the cam sector 210 is rotated in a clockwise direction, as viewed in Figure 11 into the "up position, it overlies the free end of the pawl 250. The trigger 300 is rotated in a counterclockwise direction, as viewed in Figure 11, by an arm 326 pivotally mounted upon the rod H and terminating in a bifurcated end 322, straddling the tie rod 52 mounted between the frame members 60. Whenever paper is advanced by the feed rollers 42 and 44, the rod 62 is lowered, causing the arm 320 to be rotated in a counterclockwise direction, as viewed in Figure 11, so as to engage a resiliently mounted stop 330 secured to the trigger 300, so as to release the trigger from the cam sector 27!], permitting the tension spring 280 to snap the cam sector 216 into the position shown in Figure 11 to clear the end of the pawl 250, to permit the clutch mechanism to actuate the printing mechanism into printing position, so as to print the price upon the paper.

In the event a loaf of bread does not engage the trigger 52, so as to set the feed rollers 42 and G4 in motion, the trigger 300 is not released so as to cause the cam sector 210 to remain in the up position shown in Figure 13, thereby holding the shoulder engaging end 290 of the pawl 250 out of the path of the shoulder 292, so that when the arm 220 is oscillated, it does not rock the shaft I68 and therefore the printing mechanism remains inoperative until the succeeding loaf engages the trigger 52 to set the feed rollers 42 and 44 in motion, so as to feed paper to the bread wrapping machine and thereby lowering the rod 92 so as to release the trigger 360 to permit the pawl 250 to engage the shoulder 292, causing the shaft 108 to be rocked, setting the printing mechanism in operation, to again print or stamp the price upon the sheet of paper, in readiness for a succeeding operation.

Although the preferred embodiment of the device has been described, it will be understood that within the purview of this invention various changes may be made in the form, details, proportion and arrangement of parts, the combination thereof and mode of operation, which generally stated consist in a device capable of carrying out the objects set forth, as disclosed and defiined in the appended claims.

Having thus described our invention, we claim:

1. The method of printing upon paper coated with an ink-repellant coating material, said method including the steps of fracturing the inkrepellant coating underneath the areas to be printed, and applying ink to the fractured surfaces so that the ink adheres to the paper throughout the areas where the ink-repellant coating has been fractured.

2. The method of printing upon paper havin a waxed coating, said method including the steps of piercing the waxed paper from one side so as to break the wax coating on the opposite side to expose portions of the paper through the wax coating, and printing upon the area of the paper having the waxed coating broken and portions oi the paper exposed.

OWEN J. GARLOUGH.

HARRY M. STEWART.

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

UNITED STATES PATENTS Number Name Date 110,031 Goodman Dec. 13, 1870 261,025 Murdock July 11, 1882 986,548 Cowles Mar. 14, 1911 1,135,053 Sampson Apr. 13, 1915 1,232,634 Whitaker July 10, 1917 1,262,205 Joline Apr. 9, 1918 1,307,532 Angeli June 24, 1919 1,466,000 Sevigne Aug. 28, 1923 1,549,784 Middleton Aug. 18, 1925 1,556,552 Welter Oct. 6, 1925 2,082,945 Ferenci June 8, 1937 2,356,644 Arelt Aug. 22, 1944

Images