USRE9800E - swift - Google Patents

Description

2 Sheets$heet 1 H. D. 8: D. W. SWIFT,

Assignors to G. H. WHITGOMB (in G0. ENVELOPE MACHINE.

No. 9,800. Reissued July 12,1881.

in our said former machines, or of a flexible other, forming a series of elongated spur-gear UNITED STATES PATENT OFFICE.

ENVELOPE- MACHINE.

SPECIFICATION forming part of Beis sued Letters Patent No. 9,800, dated July 12, 1881.

Original So. 21-21234. dated February 27, 1279. Application for reissue filed July 30. 1879.

To all whom it may concern:

Be it known that we, HENRY D. SWIFT and D.WHEELER SWIFT,Of Worcester, in the county of Worcester and State of Massachusetts, have invented a certain new and useful improvement in Envelope'Machines, which improvement is fully set forth in the following specification and accompanying drawings, in which Figure 1 is an end elevation Fig. 2, a side view of two projecting fingers; Fig. 3, a sec tion of two projecting fingers on the line X X, Fig. 5; Fig. 4, a side elevation of the drum, showing fingers, ratchet and pawl, &c.; Fig. 5, a horizontal section of the drum and flanges; Fig'. 6, a side elevation'of eccentric link Fig. 7, an end elevation of eccentric link.

Similar letters of reference indicate corresponding parts.

' This invention consists of certain improvements in the folding and drying apparatus of envelopemachines, which are described and represented as applied to the improved machines patented by us heretofore-to wit, on February 22, 1876, and on December 26,1876- though the same may be advantageously applied to other forms of that class of envelopemachines in which gum is applied to the sealflaps of the envelopes after they are placed in the machine.

In place of the drying-belt, as represented belt or endless apron having pockets formed by radiating arms, we use a drum, 1), which is caused to revolve with an intermittent mo- I tion upon a shaft,'S. On the rim or lateral surface o'fthis drum are rigidly fitted projecting fingersF F, &c., at equal distances from one anof the drum. Each finger is of a length and width corresponding to the size of a folded euvelope, and has two or more short projections, 1 z, &c., so that an envelope may be held in the space between two consecutive fingers and no pressure be exerted on the recentlygummed parts whilethe gum on the seal'flap is drying. The fingers F F, disc), are prefcr- 5 ably fastened rigidly to the drum, and are 1 made of such a shape and are set at such a i I turn movement of the carrying-frame.

distance from one another, substantially as shown in Figs. 2, 3, and 4', that a recentlyfolded envelope will be held between two Qf- In this way movable fingers are avoided, such as were used on the belt in our forrrTer machines, theyhaving been found to bcfeirpensive and inconvenient.

The drum D, supported on its shaft S, is attached by hangers to the frame A of the machine, at such height and distance from the frame that the carrying-frame C, in its forward motion-i. e.,when moving toward the drummay deliver a folded envelope, which itbrin gs from the folding mechanism B, into a space between the fingers FF, and-in its return movement may take a dry envelope from the space above and carry it to the plate T, by which it is transferred to the curved receiver.

The device for giving a reciprocating motion to the carrying-frame C is omitted to avoid complicating the drawings. It is clearly shown in our said former patents.-

An instant before the carrying-frame has reached the limit of its forward motion the' drum D is caused to move in the direction of the arrow, Fig. 1, the distance of 'a space between two fin gers,sothat the envelope brought from the folding mechanism B and placed between two of the fingers is carried one space a toward the under side of the drum, and a dried envelope is at the same time brought into position to be pushed on the plate T by tlu i re his intermittent motion of the drum is secured by the cam G, Fig. 4, on the driving-shaft, acting through levers L L, and the pawl I. upon the ratchetrwheel W.

For the successful operation of the dru'm, in connection with the carrying-frame, it isneccssary that the fingers should be exactly in position to receive the envelopes from the car rying-framc. It is therefore desirable to ad-v just the relative position of the fingers and the carrying-frame. This is accomplished by means of the eccentric-link K. If the screw Q, Figs. 6' and 7, be loosened and the link moved slightly. in either direction, the

forced by an m'liin:

:vni'oa'onco to that of the owl. connorgnentiy tho drum and {he carrying tion oi'tho pawl i wih cam i} will he reizilii'e, posiiion mm-o.

Covering lho on y oi rho (il'Ulii, and, if icsirel'i, with lips 1i )i projecting" nlightly over the cmls of tho iingrxn, iiliiiil: guard-flanges E E. "ihenu nssistin roininingg the envoiopns in tho spacns'lictwmen {ho in Mrs, hxrnpt at the opening 0, which is 021 ii to allow tho carryiiig-ir-nn:o i) Mini-SH in tho fingers. Una of tho flanges, i), is; in N: thick enough to contain a circular ohmnlii, into whioh air if; ,owin g appnrn tn 5; through tin: pipe U, a, from which, through in ism-ins oi holes, it". join of air are iiruched across the hnvuii'nms, nndr tho Healiinpn of The same, an liery are isnccessiveiy broughtopposiio iiH: imit-S hy {he drum in its revolution.

'io provunl any motion oi tho iilllm, except i when acted upon hy inf: onwi, n brake, V, is used. it is ins-menial in {ho gnaniihmg i3 lay sorsws '1') ac" oi whim 0 whiio ihoy install the arm V m iiil'iiiiiiig. *3, servo iii-SO as a, 'ui- TimiiQlliHglj-Hlil'illijfj in upon the under side of the rim oi' the (is-um, and the iiugrce of pressure is regulutml. hy turning the screw v, Having; thus Hanoi-boll our invention, we claim as now and down: Monro by Letters Patent- 1. In2U]BHAVOiOjiE-iniifiiii218,ll, revolving (ix-um having; lingorn prob-raring; from itn rim, the interval between no wmlingurs being slighiiy greater than the iiiiizs oiis of the folded. envelope to be hehi, folded envelopes may he held between adjacent fingers by pressare resulting from Contact oflthe sides of the envelopes with the fingers, substantially as shown and. set forth.

2, The fingers F 1*", &c,, rigidly fixed on the intnrai surface of. a drum, made of such form and placed at such a, distance from one another that folded and gnmmed envelopes will he huiii between them by the elasticity of the paper, substantially-as shown and described.

3. The combination of the revolving drum 1), having fixed projecting fingers F F, &c., the air-chamber 1%,, with holes 0 e, &c., to diroot a blast across the envelopes from end to end, the pawl 1 and ratchet-wheel W, operated by the cam G and lovers L L, all forming a .1 rying apparatus for em'elo 'ie-machines, snhsiontiaiiy as shown and described.

4. The eccentric-link K,in combination with the levers L L, and the pawl I and ratchetwhnol N, and the drum having fixed projecting fingers for adjusting the relative position oi. the ilrum'iingers F F, &n., and the carryingirnn e i), substantially as shown and described.

5. The brake V, attached to a projection on the flange E by screws 6%, and regulated by the screw 1, in combination with the drum D, having fixrd. projecting fingers, substantially as shown amldencribed.

HENRY D. SWIFT.

1). WHEELER SWIF'IK \Vifinesscs JAMES Loom, v S. A. ESTA'BROOK.

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