US935496A - Sheet-feeding machine. - Google Patents

Description

u|rtieula|; v. a gear 18 i mounted upon the main shalt-.11 and in |ne-h with a gear 19. married by an M'lmt 20, jonrnaled in the frame ll of the apparatn.-. A gear 21 is eceentrieally aml lixeglly .-eeured to the gear 19. whereby the gear 21 will swing around its eecentrn' axis 20. and may be uidedin itr morenu-ut by an arm 22, fixed y secured to u spindle 23, journuled in a cover 24 of the attachment. which arm is pivotally conneetetl to the spindle 2- of the gear 21. To

the roller shaft 17 is attached a gear 20, in meah aith.a gear 27. mounted upon an intermediate shaft 28, 'ournaled in the frame 6 of tin: machine and the cover plate 24 ot the attachment. The. gear 27 may be on erated by the eccentric gear 21 by means of an idle gear 2th as shown in Fi 1 of the druwin a. or, it another ratio 0 speeds he |'t't|ttittt a gear 30 may be keyed upon the intermediary shaft 28, as shown in Figa. 2 to 5 of the drawings, which gear 30 meshes then with the -ar 29. The idle gear 29 i-' eonneeted to tie eccentric gear 21 and tin gear :27, or 30, as the case may be. b means pivoted on the a latte .31 It! 28, reapective and the apindh- 33 of the idle gear 29. huu the idle gear is kept alwaya in operative eonnection with the e centric gear 21 am! the gear monnted n mn the :dutft 28. Ubriousl). thereby the axiaof rotation of the idle gear in kept at the same dittttmee from the shaft'2tt, but at varying distances from the spindle 20 around wlneh the eccentric gear 21 an'inga.

The operation of the device is as follows: The gear 18. being tivedly secured to the main shaft 11, turns with a constant speed. rotating thus the gear 19 which in turn swings thegear 11 around the spindle 20. The gear 21 bein v eceentrieallv attached to the gear 10, it wi l he olaterved that the angular velocity, that. in the rate of rotation of the ditl'erent miutaofthe periphery of 'the gear 21. is irtnan'tional to the distance of said points mm the axis of rotation of the gear 19. 'flteretore the gear 20 will he rotated with a variube speed, and than the roller ahaft 17 will vary its Hpttti as the teeth' of the the axon of rotation of the gear 19 with teeth of the ear 21.

It will be 0 served that when the gears 19 and 21 are attached to each other in such a manner that the pitch circle of the gear 21 runs through the a'xia of rotation of the gear ar 29 mesh at varying distances from the v 19, there will he a point at which the angularvelocity of the gear 21 and the speed of the gear 20 are equal to warn. Obviously this oeeuru when the gear 29 meahea with the tooth or teeth of the gear 21, 'whiehare arranged in the axis of rotation of the gear 19.

Tin-nee the. velocity of the gear 21 increaees to a point on the pitch circle of the same, the. distance. of whict is the greatest from the cameo axis of the rotation of the gear li Oheionaly thin point in diametrically 0 "Malta to the minimum point. The angu ar velocity of the gear 21 then decreaaea from this maximum point gradually down hack to the minimum point of aeroi The gears are arranged in'auch a manner that the roller 10 rotates with ita minimum speed. that is in the ease shown in the drawings with a speed eqna'l to zero, when the paper is plat-ed upon the some by the shoe advancing means-til. theneethe velocit' o. the roller inereaaea as he a art I not atown In the'drawinga), and the speed of the roll 10 and. thus. of the sheet of paper heroines equal to zero just at the point, where the front edge. of the paper reaches the front 'agt'n or the registering device of the printmg press or any other machine op rating upon the. paper.

It will be easily seen that the. dillerence between the maximum and minimum speeds of the gear 21 depends entirely upon the distance between the centers of the gt'ttt'a' 19 and 21. \Vhen the bitch circle of the gear 21 runs. an hereiuhe ore deacrihed, through the-axis of rotation of the gear 19, the apeed varies from zero to maximum. Obviously when the center of rotation of the gear I!) is located Ultih'itit: of the pitch til'til of the gear 21. a nrgatite speed in obtained. That h. the roll ltv will reverse its direetion of rotation for a'given time. in this ease, therefore, the speed varies from a ne 'ative minimum to a positive maximum. Vhen -on the other hand, the center of rotation of the "car It) .is located within the pitch circle of the gear 21, the speed varies from a positive mminunn to a positive maxinnnu. It is thus apparent .that. a great. variation of upeeds may be. obtained, depending upon the relative positions of the center of rotation of the'gear 19 and the itch circle of the ear 21. ()n the other iand, it is obvious tmt many minor changes ma be made in the arran unent and eutmtruetmn of aavarat parts ivit tout departing from the spirit. and scope of the resent invention. For int-dance, gears ma be interpmed between the vurioua ahafts o the device in order to vary the ratio of speed of the name. i

Attention is called to the fact that the invention is not limited to the'uae at the roller 16 in oonncctionwith the ponveyiug ta but the same may he med just an we! in connection with conreyer rolls 0 rating any anitahle conveying means for tie ahceta to be fed. It is not anomaly, on the other hand, to advance the aheeta' mm a vertically movable table, as shown in tho drawin or by automatic feeding means. hat the a eeta may be )laeed upon the conveying meana by hand, i desired.

Menus may be employed .to adjust the gr-amt cameo tliatattt-e between the t-t-tilem of the gear! I!) and 2|, in order to varv the ditft-rem-e in a reeds during eat-h revo nation. as ltt'lt'illltflore mentioned. without departing from the 5 invent ion.

0 slit-eta, a roller operating mid eonve ing tneatm, a train of grant operated Ivy aaid riving shaft and eonneeted to mid roller, and a plurality of anus pivotally eonnerting three of the ears of Mill train, one of the outer ii aaid three gear, being aeenretl to a gear of aaid train, whereby aaid roller and thus naid conveying lnt'ttna in moved with a variable apt-ed.

2. In an attaehment for paper feeding Inntllltlt'rt, the t-oniliination with a driving shaft.

of conveying means for mlvaneing the sheets. a roller operating aaid eonve ing means, a train of geera operated by unit driving aha ft and eonneeted to mid roller, and a plurality of arnia pirotally runner-ting three of the gum of said train. one of the outer gears of said three gems Ireing attaehed eeeentrically to one of the gears of said train, whereby said roller and than mtid t-onveying meant-t is moved with a variable apt-ed.

3. In an attachment for paper feeding maehinea, the combination with a driving nhaft. of the eonveying meana for advaneing the ala-ets, a roller operating aaid eonveying a lneana. a train of geara operated by said driving shaft and ctm'neeted to aaid roller, and a plurality of al'lna pivotally eooneeting three of the genre of anal train, one of the outer gram of said three grant Irving at-etlretl to a gear of mid train in ant-Ii a manner that. the Illlll rin'le of said outer gear rnna thron h the axis of rotation of the gear to which t :e same is attat-hed.

4. In an attaclanent for paper feeding inat'hinea, the combination with a driving aliaft, of conveying int-am for advaneing the diet-ta, a roller operating aaiil meam, an mntrie gear driven by aaid dririn shaft, an idle gear, annafor keeping Ntit idle gear and aaid eeeentrie gear always in operative eonneetion, a third ear, anna o ratively ounneeting aaid thirt gear to rttlil idle gear, and a gearing lN'iWt't'tl mud third gear and the ro ler of aaid eonveying lneana.

5. In an attat-lnnent for paper feeding ma -t'||ine:t,' the combination with a driving nhaft,

of conveying means for advaneing the aheetp, a roller operating aatd lamina, an eccentric get-r driven by mud driving ahaft, a aet'ond gear in o wratwe eonneetion with eaid roller,

and an itile gear, the axia of rotation of which in t'anaetl to var ita diatanee from the ruin of rotation of aai eccentric gear and to he at a constant distance from the exia. of rotation of aaid aecond r.

Signed at New York, in the county of New York and State of New York, thia 10th day of ()t'tubtfl', A. D. HI)".

RUDOLPH L. IlANAl'. 'itm-nnes:

t-hommn "ammo, S. lhaxaaun.

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