Патент USA US2134379код для вставки
Oct. 25, 1938. E, Q SAU'ERMAN‘ 2,134,379 ENVELOPE MACHINE Filed April 11, 1956 J0—>- 11 5 Sheets-Sheet l Oct. 25, 1938. E, Q SAUERMAN 2,134,379 ' ENVELOPE MACHINE Filed April 11, 1956 _ _ _ _ _ __.___________________ \ -____.____\_ \______.____ 5 Sheets-Sheet 2 -OCt. 25, 193.8. E_ Q SAUERMAN ENVELOPIE MACHINE 2,134,379 Filed April 11, l936 5 Sheets-Sheet 3 % Z751 veqg Oct‘. 25, 1938. E. c. SAUERMANENVELOPE MACHINE Filed April ‘11, 1936 ‘ 2,134,379 _ I 5 Sheets-Sheet 4 & / 9%.wmuamx 5% ..g 77492!‘ 61521416177100 Oct. 25, 1938. E, c, SAUERMAN _ 2,134,379 ENVELOPE ' MACHINE’ Filed April 11, 1956 I 2__/ ‘ RETURN FUSTAGE GURRRNTEED 5 Sheets-Sheet 5 RETURN PUSTRGE GlIlRRNYEED Patented Oct. 25, 1938 UNITED ' I '- STATES ' PATENT ' OFFICE , ‘ 2,134,319 ' ' i - ENVELOPE MACHINE 1 Ernst‘ C.‘ Sauernian, Chicago, Ill. Application April 11, 1936, Serial No. 73,843 3 Claims. (CI. 93-73) This invention relates to machines for pro- construction and arrangement of printing means ducing envelopes of the type having bottom and by virtue of which either or both end flaps and/ or side or end flaps, some or all of which are adhe- bottom flap may be printed while the envelope sively secured together to complete the envelope blank is passing through the machine, during 5 pocket. More especially the present invention process of formation. The printing mechanism is is directed to improvements in or attachments constructed and arranged for performing the for such machines for printing ‘on the back side of the envelopes while the envelope blank is printing operation after the end flaps and bottom flap have been folded and adhesively secured passing through the machine, during the process together to complete the envelope pocket, thus 10 of formation, _ For certain commercial uses various types and making it possible to properly secure the bottom 10 flap to either 01' both 0f the end ?aps 0f the en sizes of envelopes are desired, and for certain purposes it is desired that the back side of theen- velope since this operation precedes the printing operation- Because the printing operationis to velopes be provided with printed matter, such as tally independent of- the folding operation and 15 instructions for opening, notice for postal inspection, or other matter. the adhesive securement of the ?aps there is no 15 possibility of the adhesive in any way vaifecting Generally such printed matter and informa- the character or quality of the printing on the tion has heretofore been applied to the backs of the envelopes by a separate operation on a print- envelope- This invention also contemplates the provision of. a novel construction and arrange 20 ing press, after completion of the envelope on an envelope making machine. This practice has often been found unsatisfactory because of time consumption and increase in cost of labor, and primarily because the printing press when so 25 used is not available for use in printing the general run of work, which, on the whole, is much more pro?table than the operation of printing on the back of envelopes. Manifestly such delay in production of higher paying work materially ment whereby the Printing mechanism is ren- 20 v dered inoperative in response to the non-feed of an envelope blank. ' v _ Other advantages and objects of the present invention will appear in the following descrip tion. taken. in connection with the accompanying 2,5, drawings in which: Fig- 1 is a Side elevation of the rearward P01‘ ‘tion of an envelope making machine, embodying the Present invention; . , 30 reduces the margin of pro?t in handling higher grade printing jobs. There have been several attempts to solve the foregoing problem_ For example, in the Oles‘ Patent No. 1,879,990 there is disclosed a construc- Fig- 2- is a plan view of the rearward portion ,30 of the machine; Fig. 3 is a transverse section through the ma chine taken as indicated at line 3-,-3 on Fig. 1; Fig. 4 is a section taken as indicated at, line 35 tion and arrangement for printing on one of the 4-—4 on Fig. 3; ~ end flaps of the envelope. The construction disclosed in this patent, however, has very severe limitations in that the printed matter may be applied only to one of the end flaps, and which 40 ?ap cannot be fully and properly adhesively se- ; - ,35 Fig. 5 is a fragmentary sectional view taken at line 5-5 on Fig- 1 showing the cam’ means for assisting in controlling the printing mech anism, in response to. non-feed of an envelope blank; - ' 40 cured to the other ?ap or flaps for completing the envelope pocket, due to the fact that ‘the printing and adhesive applying mechanism are Fig. 6 is a view similar to Fig. 3 showingthe printing mechanism disposed in inoperative ,po sition resulting from the non-feed of an envelope carried on the same shaft and operate simul- blank; 45 taneously on the envelope blank. Moreover, Oles’ arrangement for printing and applying adhesive to the respective end ?aps is such that there is a great possibility of obtaining imperfect and relatively light or heavy printing due to pos- 5Q sible variation in consistency of the adhesive which will tend to either hold the printing plate too far from the Surface of the envelope, or ‘per’. ‘mit the plate to move too close to the surface of the envelope. 55 The present invention is directed to‘ a novel _ Fig. 7 is a fragmentary. section taken adjacent One end of the shaft carryingitheprinting mech anism, including a cam and cooperating means by Virtue of which the printing mechanism is Shifted to and from Operative Position; 1 ~ ' Fig- 3 is a sectional View Similar to Fig, 7 shOW- v50 ins therarts adjusted in position corresponding ' to the vdisposition of printing mechanism in inop era-?ve position, as seen in Fig. 6; - Fig.’ 9 is a fragmentary section showing the feeler ?nger, disposed in the path of travel of I55 , 2... 2,134,379 envelope blank and which responds to the non feed of an envelope blank, and taken as indicated at line 9—9 on Fig. 2; Fig. 10 is a fragmentary section of the inter locking means controlled by the feeler ?nger; Fig. 11 is a section similar to Fig. 10 showing the interlocking means at position correspond ing to non-feed of an envelope blank, and taken as indicated at line |l—-H of Fig. 2; Fig. 12 is a transverse section taken- as indi cated at line I2—,l2' .on Fig. 3., shqwingithe 9am control at a position of adjustment'at which the The friction rollers I3 as well as the adhesive applying blades I4, are positively driven by suit able gearing from a main drive shaft, as seen in Fig. 2 of the drawings, so as to continue to ad vance the blanks through the machine in a pre determined spaced apart relation. The blanks are advanced from the adhesive applying blades by reason of their contact with the resilient sur face of a roller, disposed below said blades to a folding mechanism indicated generally at l8. This folding mechanism is well understood in the printing mechanism is disposed in operative posi~ _~_ art, and is constructed so that the bottom or for wardmost flap 5, of the blank is deflected up tion; wardly, and when it arrives at a predetermined Fig. 13 is a view similar to Fig. 12 showing the: position a pair of timed spaced-apart tucker cam control means in a position -.at which the printing means is disposed in inoperative posi- 7 ?ngers 20 carried on rock shaft 2! engage the blanks, substantially at the score line de?ning the bottom ?ap, so that as these tucker ?ngers Fig. 14 is a plan view of the rearward-_ side of move downwardly the blank is fed between a an envelope, having its ?aps provided with printed pair of superimposed rolls 23, as seen in Fig. 4, matter and produced von amachine embodying for folding the bottom ?ap '5 onto the adhesively this invention. . ' ~i . of the side ?aps.2 and 3 for The present invention is applicable to envelope coated"surfaces completing the envelope pocket. The rolls 23 making machines of the type for. producing “let; feed‘ the partially formed envelope forwardly 25 ter style” and/or “catalog style" envelopes. By over the bed plate .l?, into‘ engagement with a “letter style” envelope is meant' envelopes of pair :of spaced apart positively driven‘ friction the type generally used for correspondence and .25 carried on a shaft 26. Cooperating the like, and ‘is characterized by having its end rollers with said rollers 25 and disposed therebeneath as ?aps folded over against the body panel with the seen in Fig. .4 is a positively driven roller 29, and 30 bottom ?ap adhesively'secured to one or both end said rollers 25 and 29 feed the partially folded ?aps for completing the envelope pocket. 'The envelope ‘through another folding device (not term’ “catalog style’? ‘envelope is‘ used in the shown) for foldingthetop or sealing ?ap 4, down generic sense, andis intended to- include envelopes onithelend and bottom ?aps, for completing the tion; . . .. ' s = For purpose of illustration I'have selected an envelope making'machine of the type for produc ing “letter style” envelopes as iindicated-‘atl, in Fig. 14 which includes end ?aps 2-1and-3 and top and bottom ?aps 4 and 5 respectively. Manifestly envelopes of this type maybe produced so that the bottom flap is adhesively secured to either one or both of the end ?aps,"depending upon the character,’ or use of the envelope’desired. For convenience the drawings‘dis'close only the rearward portion of'a commercial form of en— velope making machine, embodying-the present invention, and in which; the envelope blanks are fed therethrough in-the direction'indicated by the arrow in Figs. 1 and12. It is to be understood that the envelope blank prior to passing through the portion of the‘ machine illustrated, is ?rst creased to form lines of fold for ‘end, top and bottom ?aps. Then the end ?aps arefolded over the body portion of the'blank and are fed prefer ably centrally through the machine over a‘ bed plate‘! 0, rigidly secured to spaced apart standards orside frames H; The blank with the end ?aps folded thereover is then fed to a pair of posi tively driven friction rollers 13 which cooperate 35 with a driven roller therebeneathinot shown) for advancing’ the blank‘v forwardly so that the obliquely disposed'ladhe‘sive applying'blades indi 15 .. known as ‘fopen end”, ‘*‘open side”, “coupon” and othertypes adapted to be used for advertis ing-matter, data, containers, etciiand is vcharac terized by'having its end?aps adhesively secured together, and having ‘the bottom ?ap adhesively secured to one or both of the‘ end ?aps. 10 envelope- , . 20 25 30 . - IFI'he-present invention contemplates the provi sion of means for printing informationor data oneither or both of the folded end ?aps '3 and 3 and/or the bottom flap 5 of the envelope, while the blank is passing through themachine, and this‘ operation is performed after the bottom ?ap 40 '5 is folded against the end flaps 2 and 3 so that the printing operation is totally independent of the adhesive applying mechanism orthe mecha nism for folding the flaps of the envelope blank. "I The printing means disclosed in'the drawings includes supporting elements 32, carried on the shaft '26 and on each element there is secured printing plate members indicated at 33. Said supporting members are positioned along said ‘shaft26 so that the printing plates 33, are brought into registration with and print the folded end flaps 2 and 3 as indicated in Fig. 14.. Desirably the roller 29 located immediately below the shaft 26 as seen in Figs. 3 and 4 is provided with a ‘resilient or hard surface to serve as an impression 55 ‘roll for the printing plates. . As is apparent, each of the members 32 are formed as clamp members and are each provided with clamping screws 34, ‘which permits quick. and easy detachable secure ment thereof along said shaft 26, and therefore 60 said members 32 with their respective printing plates may be quickly and easily removed or .re placed or adjusted along on saidishaft, and if de sired even an additional member 33 and printing plate may be employed for printing on the bottom 65 ?ap 15- of *said envelope blank. It will ‘also be recognized that these printing members need not - cated at l4, carried on the rotary shaft’ [5, en necessarily be located in axial alinement, but may gage and'apply‘adhesive to‘ the two forwardmost be disposed in' angular relation to each other so diagonally extending edges of the folded over end thatthe printing on said ?aps is disposed in o?set flaps? 2 'and 3. Manifestly if ‘desired.- only ‘one of relation. The shaft 25 and impression roll 29 are 70 the adhesiveapplying blades may be employed, interconnected by suitable gearing indicated at and the shape ‘and'location‘of suchfblade will -35‘so:that the peripheral speed of the ‘surface of naturally depend upon‘ the ‘shape and overlapping said rollers 25 and 29 will be the same for feeding arrangementiof the» flaps of the envelope blank. ltheenvelopeblank therebetween while‘ the print 75 2,134,379 3 that‘ they‘are. relatively sensitive in' that ing operation is‘being performed. These rollers arranged they are normally held‘ in inoperative position :by as well as rollers 23 are all driven from the same power source as the other device previouslyde ' scribed so as to feed the envelope blanks in timed spaced-apart relation to' the other mechanisms of ‘the machine. . , . _ The printing plates 33 are adapted to receive ink from inking roller 31 which in turn is con tacted by transfer roller 38.. Roller 40, the 10 periphery of which passes through a body of ink passage 'of‘an envelope blank over said ?nger, as seen'in Fig. 9, and when-a blank does not pass‘ thereover at the proper timed interval the feeler ?nger swings: upwardly ';to' the position indicated in dotted lines ‘insFig. 9, thereby rocking thev con trol lever 53 .in'a downward direction; The outer end .of said lever 53 is provided with a trans versely extending portion 53w adapted for inter locking cooperative engagement with a lever arm picks up a suitable quantity of ink from the 55 rigidly carried on a vertically extending rock trough and transmits it to the surface of roller 42 shaft 56 .journalled in bearings Nb of the adja—' which oscillates back and forth into peripheral cent side frame member vl l as seen in Fig. 1. The 15 end of said lever 55 adjacent theinterlocking end 15 contact with the respective rollers 38 and 40, while roller 38 is shifted axially back and forth, while of the lever 53a is provided with an upstanding in contact with the ink applying roller 31,. for projection 55a having an aperture 55b through evenly distributing a uniform coating of ink .on which. the extreme ‘end of portion 53a'of lever 53, is adapted to be projected when the ?nger 50 the surface of said roller in va manner well under- > is actuated by reason of the fact that no envelope 20 stood in the art. The mechanism for causing 20 oscillation of rollers38 and 42 is well understood blank has been fed thereover in a proper timed in the art, and is therefore illustrated in outline interval. . The upper. portion of said block on the in the drawings, and a detailed description thereof side adjacent said portion 530, is provided with a is believed unnecessary, other than to state that V-‘shaped recess 55c adapted to be engaged by the V-shaped terminal portion 53b of said lever 25 25 said rollers are also driven in timed relation to portion‘ 53a for-‘interlocking engagement there the rotation of the printing plates 33 carried on with while envelope blanks are continuously the shaft 26 by a chain drive as indicated gen passing through the machine in proper predeter orally at M. Envelope blanks as they are fed through the mined spaced apart relation.‘v Connected to the . 30 machine of this type initially are mechanically lower end of the vertical rock shaft 56 is a lever spaced apart a desired predetermined distance, arm 59 the outer end of which is provided with a roller 69 adapted for engagementwith the face and it is possible that said mechanism may oc of a cammember Bl ‘mounted on a transversely casionally become inoperative in that it may oc casionally fail to feed a blank, thus interrupting a extending shaft 62 journalled in the side frames I l, and which shaft is in turn driven by suitable 35 35 continuous series of spaced apart blanks. Fur gearing from the main drive shaft of the ma thermore, during the passage of the envelope chine, in timed relation to the feeding devices on blank to the various mechanisms of such a ma chine, it sometimes happens that a blank must the machine, so that said cam makes a complete revolution corresponding to the interval of. time for some reason or other be removed so as to lapsing between adjacent envelope blanks pass‘ 40 prevent jamming of the machine, to avoid up 40 setting the timed spaced-apart relationship of ing a predetermined pointin the machine.‘ Said other oncoming envelope blanks. Therefore, in cam is provided with a raised portion 6la which order to avoid functioning of certain devices on encounters the roller 60 at each revolution of the the machine, there is provided means which is shaft 62 so as to rock the lever arm 59 in counter responsive to the non-feed of a blank at certain clockwise direction with respect to the view seen 24.5 in Fig. 5 thereby rocking the vertically disposed v portions in the machine, and in the present in carried in a trough indicated generally at 41, stance this means includes a feeler ?nger in dicated at 50 which is registered with an aper ture 19a in the bed plate located forwardly of the adhesive applying mechanism. This feeler ?nger is of bifurcated formation and straddles a roller member 5| as seen in Fig. 2 of the drawings, _ shaft 56 which in turn rocks the lever 55 in the same direction as the lever 59. The levers 55 and 59 are maintained at their innermost position so that the roller 60 is yieldingly maintained in 50 contact with the surface of the cam 6| by a coil spring 63 connected to an extension of the lever 55 and to the opposite frame member ,I l. Thus any rocking movement of the shaft 56 by en counter of the roller 60 with the high point Glut blanks are fed in a forward direction. Feeler 55 ?ngers of this character have heretofore been of . the cam takes place in opposition to the re employed as above mentioned for rendering action of said spring 63. Rigidly connected to the various devices of the machine inoperative in lever arm 55 is a rearwardly extending lever arm response to the non-feed of an envelope blank, 65 the opposite end of which is connected by a and in the present instance it may be understood tension spring 61 to the end of the transversely 60 that the feeler ?nger is connected to mechanism movable and substantially horizontally ‘disposed for rendering the adhesive applying mechanism stud or pin 69 carried in ,a socket 10 mounted in inoperative in response to non-feed of an en~ the frame ill. Said pin 69 is provided with an velope blank over said ?nger. I contemplate enlarged portion 69a for guiding the pinv when it. is moved. in axial direction in the socket .10. Cir 65 employing this same mechanism-controlled by, cumscribing said pin and reacting against a as’ the feeler ?nger 56, for rendering my printing shoulder, 16a of the socket and the end of the mechanism inoperative in response to the non feed of an envelope blank, as will presently be enlarged portion 69a is a coil spring ‘H which tends to oppose retraction of the pin. Mounted described. ' on the inner end of the pin 69 is a roller 13 which 70' The feeler ?nger 50 is mounted on a trans 70 versely extending rock shaft 52 journalled in the normally, when envelope blanks are passing in side frames or standards II, and connected to continuous I spaced apart relation through the one end of said rock shaft is a control lever 53. machine, is disposed in the position seen in Fig. 7 It may be understood that the feeler ?nger, rock in registration with the hub portion of a cam 16 mounted adjacent one ‘end of the shaft 26;, Said 75 shaft and control lever 53 are so constructed. and and with which roller cooperates a superimposed roller, and between which rollers the envelope 4 cassava cam is provided with a ?anger‘lia. which normally maintains the roller 13 in such position while 50 may move upwardly to the dotted position seen in Fig.9. .When said ?nger swings to such posi tionithe interlocking portion 530. of the lever 53 envelope blanks are continuouslypassing through themachine. ' Said ?ange‘is formed with a cut swings. downwardly ito thepositionseen in Fig. 11 away portion or notch'l?bi as seen in Fig. 12 so so that the terminal portion 53b thereof registers with the aperture 551) of the block 55a which forms ;a' part of the lever; 55, and as said lever 55 returns, after passage of the high point Bla of said cam; by. the influence .of the spring 63, it tele scopes .over the end of the interlocking portion 10 53a of‘the lever .53, as seen in Fig. 11. Such that when disposed in registration‘ with the-roller 13 withdrawal of the pin 69 in‘ outward direction will cause said roller to pass through said notch into registration with the camzsu'rfa'ce 160, as 10 seen in Fig. 8 of the drawings. Thus due to .the contour of the cam surface 160, continued'rota tion of shaft 26 will cause the adjacent end of said shaft to be raised, thus lifting the printing devices 32, 33, and said rollers 25 out of co 15 operative relation to the impression roll 29 to the position seen in Fig. 6. This condition occurs, however, only when there is'a breakin the con tinuous feed of envelope blanks in ‘proper spaced apart relation through the machine. Y 20 To permit such movement .of the shaft 26 carrying the printing devices and said rollers 25; the ends of said shaft are carried inbearing blocks 19 mounted in guide-ways‘ in the side frames 1! and are normally urged downwardby 25 coil springs 80. Suitable tensioning devices in dicated generally at 8| are ‘mounted on the re: spective frames and permit adjustment .of the tension on said springs 80 to a desired degree for holding the shaft 26 in proper position. Such 30 construction manifestly permits movement of one end of the shaft in an upward direction while the opposite end acts more or lessv as a fulcrum. When envelope blanks are continuously pass ing through the machine in proper spaced apart 35 relation the feeler ?nger .50 is maintained de pressed as seen in Fig. 9 and each time .cam 6| rotates, which corresponds'to the timed interval between adjacent blanks, the high‘portion Gla of said cam rocks shaft 56 so that the block.por-‘ 40 tion 55a of lever 55 is moved out of contact with the interlocking end 53b of the lever 53, and as soon as the high point 6| a on the cam is passed the lever 55 returns under the in?uence’ of the spring 63, returning the block 55 for interlocking 45 engagement with the end 53b of lever 53, as seen in Fig. 10. As long as the envelope blanks are passing in a continuous series the portion 530. of the lever is maintained substantially at the posi tion indicated in Fig. 10, and it may be under 50 stood that the action by the high point Bio of the cam 6| takes place just prior to the passage of an envelope blank over the feeler?nger 50. As will be apparent, this permits the lever 55 to berocked outwardly so that its groove 55c will be moved 55 out of contact with the V-shaped terminal por tion 53b of the lever 53 thus allowing said lever 53 freedom of action in the event no envelope blank registers with the feeler ?nger 50 at the timed interval corresponding to the spaced apart 60 relationship of the blanks. Moreover, as long as the envelope blanks are passing through the ma chine in a continuous series, the printing mecha nism continues to function so that the printing plate successively registers with the. partially 65 completed envelopes at the proper timed in tervals. ' -In the event that a series of‘ envelope blanks as fed through the machine is broken for any reason whatsoever, or for example upon completion of a 70 run of envelope blanks through the machine, the feeler ?nger 5G is thenrendered freetoufunction because at thetime that no venvelope blank passes over ?nger 50, and because the. cam 6| has'just previously rocked lever 55. outwardly releasing 75 the interlockingportion 53alof. 1ever53, the ?nger movement of the lever .55 causes the lever arm 55 to swing outwardly tensioning spring 61 and causing roller 13 to hug the flange 16a. of the camv'l6 asseen in Fig. '7 of the drawings. Now 15 because there is a period of'time in travel of en velope blanks from the feeler ?nger 50 to the printing mechanism the means for rendering the printing mechanism inoperative must allow for travel of the previous blank that has passed 20 the feeler ?nger, to be printed, while insuring that vthe printing mechanism is rendered in operative at the time which would correspond to the registration of an envelope blank when there is a gap in the continuous feed of the blanks. Therefore, it is to be understood that when the feeler ?nger .is actuated by reason of the fact that there is an absence of an envelope blank at the time corresponding to the proper interval of spaced apart relationship of the blanks, the 30 open portion 15b of the cam 16 is in the posi tion seen in Fig. '12 so that although the lever 65 has been swung in outward direction ten sioning the spring‘?l the roller'13 cannot engage theoperative surface of the cam until thenotch 35 v‘l6 registers therewith,._which' will take place upon‘rotation ofishaft 261a half revolution. When-Said notch 16b registerstwith the roller 13 the tension inspring 61 acting on the pin 69 moves ‘the roller 13 into registration with the cam surface 160 therebytensioning the spring ‘I 1. During said half revolution of the shaft 26 prior to the time that the roller 13 is moved into opera tiveengagement .with ‘the cam surface 160, it is to be understood that the last envelope blank before the gap, or at the end of the series, has been fed over the bed plate and printed in the usual manner. Manifestly as the shaft 26 con tinues to rotatewith the roller 13 engaging the cam surface 160 the adjacent end of shaft 26 and bearing 19 will be moved upwardly against the reaction of the spring 80 thereby'lifting the printing‘devices 32, 33, and the‘ said rollers 25 out of cooperative relationship-to theimpression roll 29 as seen in Fig. 6. As long as no envelopes pass through the ma chine the printing mechanism will be maintained raised in inoperative position. The rock shaft 56, however, will continue to operate as long as caml?l rotates thus transmitting motion to the 60 lever -65 and which because .of its spring con nection with the pin 69 releases the tension on ‘said pin at periodic intervals corresponding to the rotation of the cam Bl. Just as soon as the high spot‘ Ha of the compasses roller 60, the shaft 56 is returned "by the spring 63 so that roller .13 will be maintained in the position seen '1 in Fig. 8 for rendering the printing mechanism inoperative. When envelopes are again fed through the machine, or when the next envelope -70 ‘after a break inla series passes over the ?nger 50, said ?nger is :depressed and as the lever 55 has been‘ already swungi outwardly, prior to registra tion of the block-over ?nger 50, due to- theaction of the camil rocking the shaft .56 in timed rela 75. 5 2,134,379 are fed forwardly in seriatim in predetermined tion, the block 55a is withdrawn so that said feeler ?nger is free for responsive action to the passage of an envelope blank thereover. There fore, as the envelope blank passes said feeler ?nger and depresses same it swings the portion spaced apart relation, said. blanks being creased 53a of the lever 53 in an upward direction to the position seen in Fig, 10 so‘ that upon return move of the end flaps to complete the envelope pocket, and then feeding said envelopes, in timed rela tion with the folding and adhesively uniting ment of the lever 55 by the spring 63 the notched portion 550 engages the V-shaped terminal por 10 tion 53?) of the lever 53 and holds said lever 53 to provide lines of fold, and wherein the end flaps are folded upon'the'bcdyof the blank, the improvement which comprises folding and adhe sively securing the bottom flap to one or both operations, for printing on one or more of said 10 from temporary vertical movement, and which in turn blocks complete inward movement of the lever 55. Such blocking movement releases the folded flaps. tension on spring 61 at the end of the lever 55 blanks to form lines of fold for end and bottom 15 flaps, and means for folding said end ?aps, the combination of means for adhesively securing the bottom flap to one or both of said end flaps 15 as seen in Fig. 8 so that said roller 13 under the _ 2. In an envelope making machine comprising means for feeding envelope blanks in timed spaced apart relation, means for creasing said in?uence of the tension of the spring 1| is urged against the flange 16a tending to return the roller to its normal free position. However said to complete the envelope pocket, means including roller remains con?ned in cooperative engage a rotatable shaft, and two axially spaced apart 20 '20 ment with the cam surface 150 corresponding to rollers carried on the shaft and positioned to an interval representing one—half of a revolution frictionally engage the lateraledges'of the par of the shaft 26 which corresponds to the period tially folded blanks for feeding them forwardly, of time for feeding of an envelope blank from ' and means on said shaft for printing on one or the feeler ?nger to the printing mechanism. more of said flaps, subsequent to the adhesive 25 Thus, after the camv 16 has been rotated to permit securement of the bottom ?ap, all of said means registration of its notch 161) with the roller 13 for performing said operations on the blanks said roller together with its pin 69 is projected . being operable in timed relation to each other. inwardly by the spring ‘H to the position seen in 3. In an envelope making machine comprising Fig. 7. The shaft 26 in such position disposes the means for feeding envelope blanks in timed 30 30 printing devices and feed rollers 25 in proper spaced ‘apart relation, means for creasing said cooperative relation to the impression roll 29 blanks to form lines of fold for end and bottom for printing on the partially completed envelope flaps, and means for folding said end ?aps, the blanks as they register therewith. combination of means for adhesively securing Although I have shown and described my in the bottom flap to one or both of said end flaps 35 vention in connection with a certain type of to complete the envelope pocket, means for print envelope making machine, manifestly it is adapt ing on one or more of. said folded flaps, subse able by a slight alteration or modi?cation to quent to the adhesive securement of the bottom other types of envelope making machines, with out departing from the spirit and scope of this invention. I do not, therefore, wish to be under stood as limiting my invention to the speci?c form herein shown and described, except as indi cated in the appended claims. 45 I claim as my invention: 1. In a method of producing envelopes con taining printed matter on the back side thereof on an envelope making machine, wherein blanks flap, and means responsive to the non-feed of an envelope blank for temporarily rendering said. 40 printing means inoperative, said last mentioned means including delayed action connections for permitting completion of the printing operation on an aligned envelope, before rendering said 45 printing means inoperative. ERNST C. SAUERMAN.