US173147A - Improvement in fly-frames for printing-presses - Google Patents

Description

3 Sheets-Sheet Z.4

n.. WEC'KERLIN. FLY FRAMES1 FOR PRINTING PRESSES. No. 173,147.

@Jy a'rffr.;

n. WEcKERLrN.' FLY FRAMESl FOR PRINTING PRESSES.

-3 Sheets-Sheet 3. v

No.' 173,147. Patented. Fable, 197,6;

UNITED Y STATES PATENT Oruro. A-

DoMtrucK wEoKEnLIN, or BROOKLYN, Assienon To n. Hon a oo., or

. NEwYonK,-N.Y.

IMPROAVEMENT INfFLVFRAMES FOR PRINTING-PRESSES.

Specification forming part of Letters Patent No. 173,147, dated February 8, 17876; application filed September 23, -1875.

To all whom it may concern:

Be it known that LDoMINioK WEGKERLIN,

'of Brooklyn, New York, have invented an Improvement in Fly-Frames for Printin g-Presses,

of which the following is a specification:

In the accompanying drawings, which illustrate lmy invention, and wherein Alike letters of reference refer to vlike v parts, Figurel is a perspective View of my improved iiyAframe. Fig. 2 is an edge view thereof, withthe fingers .in section 5 Figs. 3, 4, andv, views of yone Vmodication; Figs. 6 and 7, views showing various modifications; Figs. 8, 9, 1Q, and 11, sections thereof; and Figs. l2 .and 13, sec- .tional views ol' further modifications. Y

The invention consists in a ily-frame whose .fingers present the minimum area of contactsurface with the printed sheets, which are in.-

dependently adjustable laterally in, or independently remo vablev from, their supportingbase, the entire group .of fingers being removable bodily from the stock or holder, all of Vwhich4 will be set forth at largein thefollowin g detailed description.

In the process of delivering printed `sheets -by a fly-frame their freshly-printed faces become more or lless smeared by contact with the broad surface of the fingers as they carry them tothe piling-table. In cut work and all fine printing this result is destructive in a 'large degree, and many remedies have been sought, and none found which effectually overcome this difficulty. As it is necessary that the group of lingers constituting the ily-,frame yshall be many in number, and placed closely enough together to prevent the sheet'from sagging between them, ity follows that a construction is desirable which presents the i smallest amount of'surface-contact with the sheet, and one which permits the point of contact of the several fingers therewith to be determined according 'to the position of the vprinted matter and marginal spaces upon the sheet to be delivered.

To this end Ilia-ve constructed the said ngers with their faces or upper sides chamt'ered or cut away to form a central rib, tapered to a thin edge, which provides bearing-surfaces .having an area little greater than that o f a knife-edge, and Vwhich consequently bearlupon the printedsheet to the least attainable degree. This 4construction reduces the Weight .and 'expense attending the useof thin plates inserted in, orvsmall wires attachedupointhe fingers, which vhas been the common practice. Fly-frames of thecommon'construction, wherein thelingersare-rigidly secured to their supporting-base, are thus zimproved and rendered -comparatively harmless to the printed sheets of the sheet, or be entirely removed, if necessity require. 'Ilhus the lingers may be adjusted to adapt them to positions which least interfere with and prevent blemishing-of the i impressions. e l

I have illustrated various ways of `acceuiplishing this adjustment of the fingers, which I will nowsinii'lutely describe.

In Fig. 1l the tapered form of the face or top surface of the lingers is made use of as a means for fastening them in place. rEhe flat `bottoms of the lingers rest upon the base barr or plate A, and the angular ribs or their upper faces bear in grooves or serrations cut parallel to each other, and laterally across thelunder side of the Vclamp bar or plate B of the supporting-base. These bars or plates A vand-B areheld in adjustable relations to each other by thumb-screws C, so that the bar B may be loosened when itis desired to shift a linger from onegroove to another, or .entirely remove it, and be tightened to clamp the lin-v gers in y their y.adjusted positions with -relationto each other. 1

The barsgor plates A and B, constituting the supporting-base, may be permanently selcured tothe stock'or A:holder G, carrying the journals H, or be attached thereto, so as to be removable therefrom, as in Figs.r3 and 6, as will be hereinafter explained.

It', in its new adjustment, a finger obstructs one ot the screw-holes m, the screw may be moved to the next adjacent screw-hole, as is apparent.

ln Fig. 3 the inner face ot' the base bar or plate A is provided with parallel angular grooves or recesses, in like manner as shown in Fig. 1, in which rest the butts of the iingers D, which are also provided with angular grooves, recesses, or serrations for a short distance from their inner ends on their under sides, which,'corresponding with, fit into said grooves, recesses, or serrations in the basebar A. The fingers are also cut away a short distance on their upper faces to form lia-t seats for the clamp bar 'or plate B, which bar B is forced down, by screws I, to clamp the said lingers 'in place. The length of the serrations or recesses in both lingers and base-plate is such as to provide a bearing suflicient to imfpart longitudinal stiffness to the lingers.

Upon starting one or more of the screws I nearest'to the linger desired to be adjusted, it will be so released from the bite of the clamp-bar B as to be easily removed by a 'slight movement lengthwise, and. maythen be readily inserted at the point desired. It is thus apparent that one or more of the fingers may be moved laterally a distance equal to the width ot' one or more of the serrations or recesses, which will cause it to bear at the desired point upon the printed sheet.

The clam p-bar B is shown in Fig. 5 as seated at its rear end on a metal plate, J. Such a bearing is desirable when the base-bar A is made of wood.

In Fig. 6, at K, and in Fig. 8 the serrations or recesses are shown as disposed lengthwise of the base-bar A, and in a corresponding relation across the under side of the heel of the lingers.`

Upon being released from the pressure of the clamp-bar B, lingers thus constructed may be slided sidewise untilthe desired point is reached, when they are again clamped in position. To entirely remove them, the clampbar is raised a sutiicient distance from them to clear the serratious one from the other.

At L, Fig. 6, the base-bar A is shown to be provided with plates a and o, whose front edges are serrated or saw-toothed, which plates are so placed as to form front and rear bearings for similarly serrated seats, or ledges on the under side of the fingers D, as in Fig. 11, which shows bottom and side views of. the butt of a finger so constructed. These means for holding the fingers require but a slight withd rawal ot' them, after they are unclamped, to accomplish their lateral movement, and affords in its double bearings a mode of obtaining the required longitudinal stiffness of the lingers. Y

As shown at M, the base-bar A is provided with sets of holes n, arranged in parallel lines, a distance apart, with which engage short dowel-pins c on the under sides of the iin gers D, as in Fig. 9. When released from the i pressure ot' the clamp-bar, these ingers may be disengaged from one pair of holes, and be re-engaged in another pair, thus being adjusted at the desired point. l

As shown at Nin Fig. 6 and in Fig. 10, the base-bar A is provided with a front plate, c, which projects upward to form a lip or rib, which fits into a lateral recess in the under side ot' the lingers D. When loosened by the raising of the clamp-bar, these fingers may be slided to the required position, when they may be reclamped. This rib may project from shoes uponthe butts of the fingers, which may then slide laterally in the longitudinal slot or way in the base bar or plate A, as in Fig. 12.

What'has been described as serrations may be slots or recesses of any other shape than with angular sides-thus, as in Fig. 13, they may be square sockets, and they may, of course, have any other configuration which will provide suitable holding-surfaces; and, whenever it is required, or great durability is desired, the holding points or devices on the fingers may be provided upon metallic shoes, as in Figs. -12 and 13, and the corresponding devices upon the base-plate A, or the plate itself, may also be of metal. In practice, however, it is expedient to construct the iiy-frame and most of its parts of wood, in order to secure lightness.

It has been customary to remove the frame bodily from the press by securing the outer of the main group of fingers to short arms extending from the stock or holder G. This construction, however, does not afford the stiffness required for the somewhat violent movements the frame has to endure; and I have, therefore, provided the stock or holder G, which carries the usual journals H, with lugs, rising from its ends, and a plate, Q, rising from its rear side, between which the base bars or plates A and B are inserted, so as to be seated upon the bottom plate, and rest against the lugs and back plate. 1n this position it is firmly secured by ears or clamps E, which bear upon its ends, and are firmly secured in place by thumb-screws F. This provides a'nready means for its detachment whenever its removal is required to permit access to the working parts of the press, and a secure and firm attachment for it when in operative position.

1. Fly-frame fingers shaped so as to form a projecting rib or angular sheet-supporting edge, substantially as shown and described.

2. A fly-frame for printing-presses, the fingers whereof` are independently removable from their supporting-base, substantially as shown and described.

3. A fly-frame for printing-presses, the iingers, whereof are independently detachable and adjustable laterally, substantially as described. v

4. The combination of ngers, each 'having` a face-rib, with a transversely scored or grooved clamp-bar, and a base or supporting bar, substantially as shown and described.

5. Thecombiuation of bars or plates A and B, adjustable fingers D, and means for retaining the fingers rigidly between the bars, substantially as described and shown.

6. The combination of base-bar A, ribbed fingers, and scored orv grooved clamping-bar, substantially as described and shown.

7. In combination with the independentlyvdetachable fingers, I claim metallic shoesprovided with devices, substantially as described, whereby .they are adjustably attached to their supporting-base.

In testimony whereof I have signed my name to this specication in the presence of two subscribing Witnesses.

DOMINIOK `WEGKERLIN.

Witnesses ISAAC KRAUS,

S'rnPirEN D. TUCKER.

Images