US1715717A - Envelopes - Google Patents

Description

June'4, 1929. F. J. PARKS 1,715,717

MACHINE FOR MAKING ENVELOPES Filed Dec. 5 1927 fiG. 8. 10 34 26 5 65 57 5.9 37

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Patented June 4, 1929.

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FREDERICK JAMES PARKS, 0F CLEVELAND, OHIO, ASSIGNOB OF ONE-HALF 'I'O SHER- MAN W. SCOFIELD, OF CLEVELAND, OHIO.

MACHINE Fen MAKING nivvnnorns.

Original application filed May 10, 192 1, Serial No. 712,200. Divided and this application filed December The subject matter of this application is divided out of my pending application Serial No. 712,200, filed May 10, 1924, upon inachines for making envelopes.

This invention particularly relates to new and improved means for scoring and gumming envelope blanks, whereby the scoring is effected in advance of the gui'i'iming so asto obviate the fouling of the scoring mechanism by the gum; and to a new and improved form of curling or turning knife for insuring the folding of the lateral side flaps of the envelope blank down upon the blank body. Other detailed improvements will be hereinafter fully described and are fully shown in the accompanying drawing. Certain features shown in the accompanying drawing and also hereinafter referred to relate to means for gun'unin the side flaps and the side tabs of the envelope blank whereby the same are secured to the blank body to form the envelope side closures, and means for controlling the operation of said gumming means, but these gumming features oftheinachine are claimed in said pending application Ser. No. 712,200, from which the subject matter of this application is divided out, and. the claims of this application are limited to the envelope machine and the new and improved turning knife. 7

The annexed drawing and the following description set forth in detail certain means eml'iodying my invention, such means constituting, however, but one of the various forms in which the principle of the invention may be applied.

in said annexed drawing:

Figure 1 is a fragmentary plan section of an envelope machine embodying my improvements, the section. being taken in the plane represented by the line 11. Figure 2;

Figure 2 is a longitudinal vertical section,

taken in the plane indicated by the line 2-2,

Serial No. 237,717.

proved side sealing devices described, shown and claimed herein; and

Figure 8 represents a plan view of the completely folded and gummed envelope as it passes from the devices forming the subject matter of this application.

Referring to the annexed drawing, in which the several elements are indicated by the same respective ordinals in the different views, 1 indicate by the ordinal 2, Figure 7, an envelope blank at a certain stage of its conversion into a complete, envelope, hereinafter fully described, which has been folded so as to have a mouth closure flap detachably interlocked with an adjacent pocket, as fully shown and described in my U. SFPatentS Nos. 1,316,787, and 1580,4141, The improvements of this application relate only to features of an envelope machine adapted to complete the operations upon the blank 2, Figure 7, all

as will now be described in detail, having reference to the accompanying drawing.

The envelope blank 2, in the form shown in Figure. 7, but lacking the gum strips 341, Fig 'ures 4:, 5 and 6, emerges from the transverse folders (not shown in this application-but shown, described and claimed in said Patents Nos. 1,316,737 and 1,580,441) and is fed into the guide 16, Figures 1 and. 2, whence it is conducted into the bight of the upper and lower peripherally engaging rolls 17 and 18 whence en'ierging from which it is received upon the plate 19 over which it passes to certain scoring, gumming and side sealing de vices which. will now be described in detail;

The envelope blank 2, Figure 7 is fed over the plate 19 into certain scoring rolls and- 36, of which there are two pairs, the lower roll 36 being formed. with end flanges 36, Figure 3, against which the outer end-face portions of the rolls 35 closely register to define the lateral edge flaps 32, plainly" shown in Figure 7. The end faces of the upper rolls 35 prevent the turning in of the side flaps 32 further than the position shown in Figure 3 until. said side flaps 32 intersect the bevel faces 40 of portions 39 of a pair of turning knives 39, Figures 4, 5 and 6, which progressively fold down the side flaps 32 until they are finally sealed down upon the envelope pornons 529 and the glue 34 to produce the com p eiiivelope shown lfiurinp these operations the envelope is conveyed by upper rolls 21, 41, 43 and 415, and respectively coo iver'atin'g lower rolls 22, 42, 1 1 and 16, over the plate 47 andv passes therefrom to further rolls and a stacking device, not forming part of this invention, and one specific form of which plainly shown, described and claimed in said U. S. Patent No. 1,580, 1-11.

During its passage from the scoring rolls 35 and 256 to the turning kni to 239, the portions of the blank 2 designated by the ordinal 29 are supplied with glue 3% by certain devices shown, described and claimed in said application Serial'No. 712,200, from which the subject matter of this application is divided out. Briefly, this gumming operation is effected by thefollowing means. Suitably mounted in the frame 1 of the machine is a solenoid 88 having a core 87 to the upper end of which is pivotally secured the free end of a lever 86 whose other end is secured to' a transverse shaft 89 rotatably mounted in the frame 1. Also secured to the shaft 89 and adjacent the two respective ends thereof, are two arms 90, of which the arin on one side only of the frame is shown in the accompanying drawing, these arms 90liavi'ng 'U-shapcd outer ends between the members of which are mounted rollers, of WlllCllOIlC roller 91 is plainly shown in Figure 2. A pair of vertically-reciprocable colmnns 92,- one of which is shown, suitably guidedby brackets, of which one, 93, is shown in Figure 2, and guided by frame bosses 102, are supported by the rollers 91'.

One boss'102 appears in Figure 2. These columns 92 support in'bra kcts at their upper ends a' transverse tubular shaft 84. Adjustably secured in brackets 104 supported by said transverse shaft 8et are a pair of depending tubular supports 20 for gunnning devices 25. These supports 26 communicate intermediate their upper and lower ends with t'nbular'scctions20 connected by means of flexible tubes 27 withtubula r elbow-sections 26 which in turn" receive suitable glue or other gumming material from' a source of supply (not shown) through conduits 27 of which fragmentary portions are shown in Figure 2. A flat spring plate'85 suitably supported in the'frame 1 is formed at oneedge intodownwardlyextending fingers or trips 23 and'24'. The ends ofthe'se fingers 23 and 21 are adjacent the upper edge of a plate 55 over which the" envelope blank 2 travels after emerging from the scoring rolls 35 and 36, and after traversing an intermediate metal bar or plate 20 l1ereinaft'er' more fully de scribed. The lower ends of these trips 23 and 24whic'h contact with the plate 55 are longitudinally spaced, as plainly shown in Figures 1 and'2, for a'pnrpose hereinafter fully described. Mounted upon the intermediate plate 20 and electrically insulated therefrom is a transversemetalbar 75, Figure 1, upon which the springplate 85 is mounted and secured by means of nuts 60, one of which forms a binding post to which an electric wire is sccurt'rd. The wire 80leads to a battery (not herein shown) and a second wire (not shown) connects this battery and the sole noid 88. A third Wire (not shown) count, s the solenoid 88 with a landing post (not shown.) electrically t'OlllitfCltHl with the plate 55. The frame of the machine is insulated from the metallic elements forming the electric circuit which has just been described.

From the foregoing description and the accompanying drawing, it will be evident that when the circuit is completed and the coil 88 is energized, the core 87 being drawn into the coil. 88 will rock the shaft 89 so as to cause the arms 90 to lift the columns 92 and consequently the transverse shalt 81 and the brackets 10%, whereby the supports 20 and the gunnning devices 25 will be raised into the position plainly shown in Figure 2. This is the normal position of the g-ununing devices 25 and in this position these devices do not feed gum. lVhen the coil 88 is deencrgizcd, the gun'nning devices 25 fall by their own weight and'cause gunnuing rollers (J5 to cc-n tact with the surfaces 29 of the envelope blank 2, and properly supply and spread the gum in the manner fully described in said. pending applicationSerial No. 712,200. The opening and closing of the electric circuit is controlled through the medium of the s prin g fingers or trips and 2 1. The lower ends of these lingers 23 and 24 lie in the path of the envelope blank 2 in such a manner that said blank passes under said. lower ends and raises the spring trips 23 and 24; to break the circuit. This results in the deencrgizing of the coil 88 and the consequent release of the columns 92 which are lowered under the force of gravity and which consequently lower the gunnning devices 25, and allow gum to escape from the gum nozzles as soon as the rollcrs (i5 encounter the envelope blank. The gunnning devices 25 are so disposed that the gum from the nozzles is deposited upon the longitudinally arranged port-ions 29 of the envelope 2 adjacent the portions thereof which have been previously scored by the rolls 35 and 36. The mechanismshown is so arranged that those portions 29 are parts of theblank body but, of course, it is entirely.

within the range of the invention to deposit the glue 34 upon the side flaps 32. This deposit of the gluefit does not occur until the forward edge of the envelope has passed be neath both of the fingers 23 and It evident that until such action has taken place, the electric circuit will'not be broken. The arrangement is such that by the time the circuit is thus broken a portion of the'envelope blank has passed forwardly of the gumi'ning devices 25 and consequently the gum is deposited upon the'portions 29 beginning at a point somewhat removed from the forward wardly of the gumming devices 25. lhis is an extremely inmortant in'iprovement in that I thereby obviate fouling the scoring devices with the gum, which is what happens, and with a very great annoyance and loss of etliciency, \vhenthe scoring of the blank is of 'iected subsequent to the guunning, because, of course, the gum lies open and is exposed during the scoring operation since the scoring must be effected before the side enclosures 32 are folded over.

Referring particularly to Figures 53, 4-, 5 and 6,1 have devised. a new construction of a folding knife which obviates inconvenience and delay aused by excessive fouling of the machine by gum. This is a twopart folding knife 39-39 YVhen the beveled curling face 40 is formed upon the body of the knife 39, the gum 3 1: will accumulate thereunder and cannot readily be completely removed. So I have spaced the portion 39 of the knife from the body portion 39 thereof, as plainly shown in Figures 1, 4, 5 and 6, connecting the same by straps 37, so that through the medium of the opening 38 the gum can be readily and conveniently wiped off the knife 3939*. These knives 39 are secured by means of bolts 63, Figure 1, to the frame 1, the hmgitudinal alignment of the knives being assured by means of straps 39 secured to aligning members 39 the bolts 63 intersecting said straps 39. By means of two series of transversely aligned holes 62 in the frame 1., the knives 39 can be adjusted for envelopes of varying Widths. Other parts of the machine are adjustable for different size envelopes; for instance, the scoring rolls 35 can be transversely adpisted upon the shaft 48 to which they are secured by the key-way 4-8, a

suitable size intermediate spacing roll 50 being substituted, these spacing rolls 50, as plainly shown and described in said. U. S. Patent No. 1,580,441, being resiliently conlined between the pair of rolls 35 to allow for the accommodation of the thickness of the envelope 2 between the roll 35 and the flange 36 of the roll 36, Figure 3. The scoring rolls 36 are adjustably secured to a transverse shaft 49. The gumming devices 25 can be transversely adjusted upon the support 84, In order to accommodate the envelopes when passing between any of the cooperating parts of the rolls the shafts to which the latter are secured are resiliently mounted in the frame 1 in yielding bearings pressed downwardly by means of springs whose tension is adj usted by screws 53, the desired adjustment being fixed by means of lock nuts 54-, Figure 2.

Cooperative driving mechanism for actuating the feeding rolls, scoring rolls, etc., are provided (not shown in detail in this application, but well known in various forms to those skilled in. this art).

hat I claim is:

1. In means for turning down side flaps of strips upon the body portion thereof, a turning knife having an outer body portion and an inner portion. spaced from said outer portion and formed with an inner beveled progressive turning edge.-

2. In means for turning down side flaps of strips upon the body portion thereof, a turning knife having an outer body portion and an inner portion progressively spaced therefrom so as to form an acute angle therebetween, said inner portion being formed with an inner beveled progressive turning edge.

Signedby me this 2nd day of December,

FREDERICK JAMES PARKS.

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