US1645824A - Sheet-feeding mechanism - Google Patents

Description

Oct. 18; 1927. 1,645,824

J. H. SHIPLEY SHEET FEEDING MECHANISM Filed April ll, 1925 Snom/Moz :Jaan H SHJPL EY.

Patented Oct. 18, 1927.

UNITED sTA-TEs H. "SHIPLEY, OF CLEVELAND, OHIO, ASSIGNOB TO THE CLEVELAND IIF'OIIIZOINGA MACHINE COMPANY, OF CLEVELAND, OHIO, A CORPORATION F OHIO. i

1,645,824 PATENT OFFICE.

SHEETFEEDINGA MECHANISM.

Application led April 11, 1925. Serial No. 22,816.

It is well known in this art that the ap-A plication of air currents at the sides and edges fof the sheets materially facilitates the operation ofsheet feeding mechanism and various appliances have been devised for this purpose. My instant invention seeks' to combine in the simplest and most reliable ,15 apparatus, suitable means forinit'iating successively, ther contact of, the topmost sheet with the sheet feeding member, and for reducing the friction`of said. sheet as it is.I withdrawn from the pile or stack. Said'l means are rovided with adjustments whereby the airl last may be ap lied at different heights and maybe varied) in volume and directedA inthe most advantageous manner to correspond with the articular class of paper stock being han led at any given-y time. v

The features and advantages of my imf provenient may well'be exp aned in connection with the accompanying drawings, illustrating suilicient features of a sheet feeding mechanism to enable me fully to oint out the particular construction emdying my invention, wherein: Fi re 1 is a fra entary view in-lon gitu inal section, i ustrating a so-called pile-feeder, incorporating my improvements. Fig. 2 is another fra entary viewin. irregular transverse section on line 2-2, Fig. 1, which is sectionally broken away in parts.

` Fig. 3 is an enlarged fragmentary section of the main air blast support.

Fig. 4l is a fragmentary view in front elevation, illustrating one type of vented air *5 blast head, and

`Fi 5 is a similar view, illustrating aA modi ed form thereof.

Throughout the several figures, of the drawings, I have employed the same charac. ter of referenceto indicate' similar parts.

lIt will be recognized that the essentials of V"a pile-feeder adapted to feed sheets of paper from` a stack upon theroller transfer table at the left are disclosed in Fig. 1

laway portions `of Fig. 2 and the fragand the companion sectional view, Fig. 2. |515 Therein the rotary suctionhea a is positioned directly above the forward edges. of the pile of sheets b, which are carried upon the vertically'movable supporting table c, while the two initial rolls d, d of a roller transfer table are indicated sectionally upon the left, toward which the sheets are suc- 'cessivel advanced.

Anair blast is applied at the front of the pile of sheets, supplied from a flexible pipe e, connecting with the upright e and su /porting a perforated -T'head f, rotatabl) mounted in the transverse connection f. The vented pipe f is provided with clips f", adapted to be adjusta ly positioned over the perforations f3' as required, whilethe pipe as a whole may be rotated within its connection f by means'of the lever arm. f The details arefbest shown inthe broken 'l5 mentary view, Fig. 4.

A modified form of the vented T -head is fragmentarily shown in Fig, 5 wherein the pipe f is provided, instead, with longitudinalV slits g, disposed in alinement, which are adapted to be entirely .or partiell covered by thecorres nding spring meta clips g. rIhe ends of t e pipef, of course, are closed and the vented openings are s d at suitable intervals better to adapt the same for 4use with sheets of -varying sizes.

Referringjto the lower left hand portion fof Fig. 1, 1t will be seen. that the pipe e is vertically adjustable within its sleeve su ort e, wherein it is adaptedto be he d y means of the screw e.j Moreover, said sleeve vsupport. is lon 'tudinall and axially agiustable along an upon t e transverse r h; bein he d in its adjustable positions by means o a thumb screw h. These rightangle adjustments permit the approach and withdrawal of the blast pipe toward and from the sheets, as well -asits vertical tioning with respect to the uppermost'shg, so that the air blast may be applied at the most advantageous angle for li lng the top most sheet, as b', into contact with' the rotary suction head a, and for distributing the air intermediately between said topmost sheet and the supporting sheet'next below it, in order to facilitate the successive feedin of the sheets.'

t may be remarked that it is of considerabley ortance not only to vary the height an direction of the air blast in an appliance of this class, but also to modify 'the volume and amount of the air discharged intermediately of the upper sheets, dependent upon the ycharacter of the partlcular paper stock that is being fed and the size an weight of` the sheets. Preferably the air currents are directed against the upper! edges of the sheets approximately in a horivzcntal plane, and from varying distances f an air blast 'in order to improve t e opera `tion of lany sheet feeding/mechanism de-v in advance thereof, hence, in addition to close re ulation of the air currents, it is highly esirable to adjust the jet-producing meansboth horizontall `and vertically with :respect to the diminis ing stack of sheets.

Therefore, my instant appliance permits of the widest variation in the emplo ment of pendent thereon for its better operation.

In the structure exemplifying my! improvements, it will be seen that the darts indicate an intermediate or vertical tioning of the air blast pipe and head with a rotation of the ve'nts so as to direct the airv at a very wide angle against the edge of, and beneath they under vface of sheet'b. I'hus, the sheet is blown into contact with the under face of the rotary suction head a and it is directed by the rods al as it is l advanced between the contacting rolls i, z"

tothe roller transfer table d, d.

An attendant very readilylearns by makin a few experimental ad'ustments of the hei ht and inclination oft ev air blast pipe an the covering or uncovering of more or less fof the vents therein, the manner in which he ma. fbest ap ly the air to any given size an weighto sheets that are deaired to be fed yin the machine from time to time, particularly as all of the adjustmentsare simple and direct.

It will be understood that my invention may be embodied in various forms and may be applied to different sheet feeding mechanisms inasmuch as a typical use thereof alone is adopted in the foregoing description and accompanying drawings.

Having now described a typical embodi ment of my improvements, I claim'as new, and desire to secure by Letters Patent, in association with any suitable sheet feedingr mechanism, the following:

1. JIn apparatus of the class described, the combination with sheet feeding means, of an associated air blast member positioned in advance' thereof, and a mounting therefor, permitting its vvertical and horizontal adjustment with respect to said sheet feeding means, substantially as set forth.l L

2. In apparatus of the class described, the

combination with a rotatable suction head, of an associated ai-r blast 'head positioned relatively in advance thereof, means for controlling the directionV of the air blast, and additional means for adjusting it both horizontally and vertically with respect to said JOHN H. sHIPLEY.

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