US1353413A - Envelop-opener - Google Patents

Description

Patented Sept. 21, 1920.

l. A. MULLIGAN.

ENVELOP OPENER.

APPucATLoN FILED nEc.2, 1918.

/r/G. 6 l

n J. Wallggaw/ Gttouwas 4.4i of rig. e with ai@ Stop block advanced and the knives raised and showing how the i i UNiTED STATES-"PATENT orties.

Tonia A. MULLIGA'N. 0F NARRAGANSETTPI'ERQ '.anonii'isrnsirr'nV y l nNvnLor-ornnnn.

description of the invention, such as willV enable others skilled in the art to which it appertains to make and use the same.

The invention relates to an envelop opener, and has for its primary object to provide'an opener of this character wherein different sizes of envelops can be introduced and the ends thereof cut, the waste from the envelops being trapped so as to avoid the scattering thereof in the use of the opener, the opener being of novel form topermit its easy loperation and-the cutting of `en velops with dispach.

Another object of 'the inventionis the provision of an envelop opener of this character which is comparatively simple in construction, thoroughly reliable and efiicient in its operation, and inexpensive to manufacture. f

With these and other objects in view the invention consists in the features of construction, combination and arrangement of-parts asy will be hereinafter fully described, illustrated in theaccompanying drawing, and pointed out'in the claims hereunto appended.

- In the drawing :-H

` Figure 1, is a vertical section through the casing of the'apparatus, from front to rear, ythe knives and their operating mechanism being in elevation. f f" Fig. 2, is avertical :section'at right angles l,

to the section vof Fig. 1, inthe plane includ-r ing the knife operating plunger, thev knives and their operating mechanismsbeing again in elevation. 'v I Fig. 3, is a detail sectional viewVV on line 3-3 of Fig. 2 to show the bevel of a knife and the manner in which it engages and moves the stop rearwardly to uncover the wide slot and permit the' cutoffl end of the envelop to fall into the drawer beneath, the drawer being shown in Figs. 1 and` 2.

Fig. is a horizontals'ection on the line stop block partly covers V-the slots through which the cutoff envelop ends drop.. Fig. 5, is a transverse section on line 5-'5-5 VSpecicationrof Letters lratent.l l Patentedspt; 21., 1920,v Application inea December 2e, 191s. 'serial No. 268,261.

. of Fig. 2 and showing thepivotalfmounting i a' ofV thelower ends of the knives. v Y F ig.` 6,' is a'section on linee-6 of Fig. 2 andrillustrating the mounting vof the plun ger and the vconnection of the knife operating links' therewith. 'n A Referring tothe drawings, the venvelop opener comprises a casing 10, preferably of metal and provided nearV its ,bottom and spaced therefrom, with a transverse partition11 forming a cutting bed. In this bed,

are formed the spaced transversely extending slots 12 one edge of each of which is sharpened toform a cutter. v-

Withinand upon theV bottom of the cas in'gis mounted a bifurcated block 13 having a-pivot pin 13 engaged through its arms and on this fpin and between the arms are l pivotally mounted the lowervends of knives 14 that extendnp'wardly and divergingly through the vrespective slotsf12. `lPivoted to the upperend vof each of the knivesjl/f is a link 15 which links inl turn' are pivoted `to the arms 16 that project from the opposite sides ofV a tubular vplunger 17 that is slidably mounted in a guide 18 that is passed through the. top and depends within vthe casing 10.

Each of these knives with its link thus forms a toggle and to hold-the knives normally and yieldably raised, therev is provided a rectangular bar 19, the lower'end of which is bifurcated and straddles the block 13, the ends of the bifurcations being pivotally-mounted upon the pin 13. The bar 19 above the block 13, and its bifurcation, lies within the inclosure of the knives andtheir connected links and the upper` end portion of this bar slidably engages the crosssectionally rec-`V tangular tubular plunger '17.` Upon'the bar 19 .is mounted a helicalv spring 20, thatrests with its lower end-uponthe bed lllwhile. its

upper end bears against'the'ter'minal flange 21 at the lower end of 'the plungerl'.'

Y vWith this construction it'will be noted that when the plungery 17 is depressed,`the

knives 14: will be swung outwardlyl and with there extends forwardly a rest 22, leading from which into the casing, are the guideways 23 that are alined with the correspond-l ing slots 12 so an envelop .laid upon the l' From the lower portion of the casing y10 A iio rest 22 and moved inwardly through a guide 23wil1 assume ayPOSton projecting for, a

tom of ,the casing.

In order that the envelop may be moved intothe casingnothe propendegree, a stop block25 is disposed upon the4 bed 11 and eX.- tends' forwardly part wayI across the sslots '12,

this block being heldI yieldably in this position .through fthe medium of a spring 26 that encircles a plunger QTthatjextends; through the rear of; fthe casing; lOfy and iscarried by the v,blockfQi The side, facesof the knives lapin the-direction of the block 25 are beveled aslshown at-28 andthe central portion offthe block 25 Lisrecessedto receive the knives, :the

vends, of the; recess being beveled to correspond to the ybeveled faces of the knives so that they may rest thereagainst. When the envelop is introd-uced,g it. stops against 'the stop .block. The; knives then descenduand their beveled faces urge the stop block rearwardly Sofas toeXpo-se; the entire width of the slots IQ'tQpermit fthe cutoi'liendsof the envelops to drop readily', therethrough and intoffthedrawer beneath;` Wereit not` for l theuncoveringfoi'` the slot, the exposed areas would be,,sofsmallasqtoiprevent the ready passageof the `cutoitends therethrough.

positions f against the stjop.

Itwill beunderstood that the drawers may bew-ithdrawn yfrein-the Icasing at any time to discharge their contents. l

l. An envelop ,opener comprising a casing having-y abed `provided'with slotshaving cut- 2. An envelop opener comprisinga bed Aplatehaving pair of slots provided withv cutting edges, a .block disposed below the plate, a pair of knives pivotally connected with the block and extending upwardly and through the corresponding slots, a plunger having link connections with the ropposite ends of the knives for movement thereofin cooperative;relationto,the cutting edges of the slots when the plunger is actuated, a rod v having one end bifurcated and mounted upon the pivot of the vknives in position Ato embrace them and the blocks, the opposite end or" therod slidably engaging the plunger, and' a return spring for the rplungerdis;

posed'tupon-the rod `and bearing.- with rits ends against' the platei and;,-pl'unge`n frespectively. Y Y

' 3. An envelop opener comprising applate having a cutting edge,v a'knife pivted below the plate andfextending above they plate in coperative relation to thecutting edge and having means for actuating it in shearing relation' to ,the cutting edge, and an envelop vstop plate yieldably heldin-definite spaced relation tothe cuttingv edge andfhavingfa bevel, the'blade having alsoI a bevel arranged to engage the bevelfof thefstopfzplate zin its shearing vmovementv and under. theiniuence of-which engagement the stopyplate is movable away'from the cutting edge.

4. lAn envelop opener compri-sing abase having: a pairl vof cutting4v edges, an envelop stop plate Y slidably- ,mounteduponL the lbase and held yieldably 1 with spaced y portions thereof in spaced relation to fthe cutting edges respectively, said spaced portions having bevels,cutting blades pivoted :below v'the baseand extending' tromvabove in copera-V4 tive relation fto vthe'cuttlng edges and having bevels 'disposed to engage respectively the iirst named bevelswhen .thebladesV are moved inshearing relation to the cutting edges and under the influence of which the .stop plate is movable awayfromthe'cutting edges and means connectedvwith the blades or'operating them. simultaneously.

In testimony whereof, I ture, inthe presence of twdw-itnesses. f

, -YW-itnesses: n 3

7, FnANmW, GLnMENs, NELSON F. MELLEN.

-afix ,my signa-V i

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