US1585609A - Feed-board hump for printing presses - Google Patents

Description

May 18 1926.

J. B. ROCHE FEED BOARD HUMP FOR PRINTING PRESSES Filed Feb. 15, 1926 Patented May 18, 1926.

la'itifitti PATENT OFFHCE.

JOSEPH B. ROCHE, OF CHICAGO, ILLINOIS.

FEED-{BOARD HUMP FOR PRINTING PRESSES.

Application filed. February 15, 1926. Serial No. 88,439.

My invention relates to means for smoothing out wrinkles in paper while being fed over the feed-board of a printing press.

In the hand feeding of sheets of paper to a flat-bed printing press, it is usually difiicult to eliminate wrinkles in the paper with such effectiveness as to insure a clear impression on all portions of each sheet. With some grades of paper, this difficulty is not sul'iiciently serious in single color printing to warrant the permanent attaching of any wrinkle-eliminating device. However, it usually is serious in multi-color work, as even slight wrinkles will interfere with the proper registry of the variously colored impressions.

In its general objects, my invention aims to provide a simple and inexpensive wrinkleremover which can readily be attached to, or detached from, the feed-board of a printing press, which can readily be adjusted to feed boards of different widths, and which will not be in the way of the man feeding the paper.

Furthermore, my invention provides a wrinkle-remover in which the paper smoothing portion is constructed of metal and not easily marred or indented, and in which the attacl'iing means can readily be secured to the feed-board without defacing or damaging the smooth upper face of the feed board.

More particularly, my invention provides a wrinkle-remover in which the attachment to the feed-board is made adjacent to the opposite lateral edges of the feed-board, and in which the attaching means are slidable transversely of the feed-board with respect to the portion or portions of the appliance which smooth out the wrinkles. It also provides a paper smoothing portion consisting of two slidably interfittmg parts of closely approximating cross-sections which can be slid upon each other to vary the effective length of the wrinkle-eliminator according to the width of the feed-board on whichthis is to be used, and provides an arrangement whereby one of these interfitting parts may be used alone on feed-boards of relatively small widths.

Still further and also more detailed objects will appear from the following speciication and from the accompanying drawings, in which Fig. 1 is a perspective view of a portion of a printin press, showing the operative disposition or a wrinkle remover embodying my invention.

Fig. 2 is an enlarged plan view of the wrinkle remover of Fig. l and of adjacent parts of the feed-board.

Fig. 3 is an enlarged transverse section taken through the same wrinkle remover along the line 3-3 of Fig. 2, or through both of its slidably inter-fitting smoother portions.

Fig. at is a plan view drawn on the same scale as Fig. 2, showing the use of the same wrinkle remover, without the outer pair of slidably interfitting parts, on a narrow feedboard.

Fig. 5 is an enlarged horizontal section taken through Fig. 2 along the line 5-5 of Fig. 3.

Fig. 6 is an enlarged perspective View of one of the attaching means employed for securing the wrinkle removing portions of my device to the feed-board.

In the illiiistrated embodiment, my feedboard attachment comprises a pair of slidably interfitting wrinkle-removing members 1 and 2, and a pair of clamps, the clamps being slidably connected to the said members. Each of the smoother members desirably consists of a tube of acute-angled triangular section and of a clamp guide mounted in its bore, the outer of the two members having a sufiieiently thin wall so that the exposed surfaces of the inner and outer members will extend almost in the same planes.

As illustrated, the outer tubular member 1 has a flat bottom wall 3 which is seated on the feed-board 4 when my device is in use, a relatively short riser wall 5 facing the bed of the printing press, and an upper wall 6 which slopes upward from the paper receiv- .ing end of the feed-board toward the paper grippers of the press at an acute angle to the top of the feed-board. This outer tubular member is preferably of metal, and the inner companion member may be of metal also. In the drawings, this inner member consists of a tube similar in its crosssectional shape to the outer tubular member but sufficiently smaller so as to fit slidably into the bore of the outer member.

The inner member carries a guide which desirably extends longitudinally entirely through it, as shown in Fig. 5, and which may consist of a strip of metal 7 of inverted U section provided with oppositely directed flanges 8 which seat upon and are soldered to the base wall 9 of the said inner member. Thus arranged, the U-section of the said strip cooperates with the adjacent portion oi? the base wall 9 in affording a guide tube extending lengthwise of the said inner mem her, or transversely oi the 'leed-board. The outer member has a similarly sectioned strip 10 fastened to the inner face of its bottom wall 3, but this guide strip 10 extends into the outer member from one end of the latter for only part of thelength ot' the outer menn ber, as shown in Fig. 5, ,o as to permit the inner member to he slid into the outer member to a considerable distance from the other end of the latter.

To secure the two-part wrinkle remover to the feed board, I provide a pair of clamping members, each constructed as s-iown in Fig. 6. Each clamping member comprises a still shank slidably fitting the bore'oi one of the above described guide tubes and having one end bent downwardly a'nd then recurved to afford a lower clamp end 12 through which a thumb-screw is threaded, this thumbsscrew desirably having an enlarged swiveling head 1 L atits upper end.

In using my illustrated device on a feedboard,considerably wider than the length of the inner member 2, I slide the latter sufticiently. into the bore of the outer member 1 so t-hat the assembled length of the two tubular members will= be greater thanthe width of the sheets which are to be fed over them, but less than the width of the feedboard. Then I. slide the shanks of the two clamping members respectively into the guide tubes from the free ends of the two tubular members until the clamp ends 15 abut respectively against the lateral edges oi the feed-board. When the thun'ib-screws 13 are thentightened, these clamp the entire device rigidly to the feed-board.

By having the guide tube in the outer tubular: member rather short with respect to the length of thismember, 1 permit the in ner member to be inserted into outer: mem ber for a considerable distance, thereby allowing my. device to be adjusted to feedboardsdiffering considerably in width. Moreover, the inner tubular member can be used alone on narrow teed-boards with the slianks of bothclamping men'ibers extending into the opposite ends of the guide tube in this inner tubular member, as shown in Fig. 4.. Hence my device can readily be employed interchangeably on feed-boards of widely varying widths. ll loreover, by providing relatively long shanks 11. on my clamping members I can readily permit the wrinkle remover to be disposed at some dis tance from the edge of the feed-board which is adjacent to the press feeder, so as not to interfere with hnn in lns feeding the sheets.

hen my. device is in use, as shown in Fig. 1, it is positioned with the upper faces of the tubular mem ers sloping upward toward the printing press proper, thereby causing the assembled tubular members (or the single one it only one is used) to term a hump, with the fed sheet 16 of the paper dipping down as it passes the top of the incline. In being dragged over the upper edge 17 of the tubular member or members, the paper sheet has any wrinkle cti'ectively smoothed out oi. it.

However, while I have heretofore described my invention in an embodiment in which both oil the wrinl-;le-removing mem here are tubular and one having a desirable form oi guide tube construction, I do not wish to be limited to these or other details of the construction and arrangement thus disclosed. Obviously, many changes might be made without departing either from the spirit of my invention from the appended claims.

I claim as my invention:

1. F or use with the feed-board of a flatbed printing press, a wrinkle remover seated upon and extending transversely of the feedboard near the delivery end of the said board and having its upper face sloping upward from the top of the said board toward the said delivery end, and'two clamping means respectively associated with opposite ends oi the wrinkle remover for detachably clamping the latter to the feed-board, at least one of the clamping means being slidable on the wrinkle remover transversely of the feedboard.

For use upon the feed-board of a liat bed printing press, a tubular wrinkle remover disposed transversely of theieedboard the said tubular wrinkle remover being or substantially triangular transverse section. with one wall seated on the feed-board and with another wall sloping upwardly at an acute angleto the aforesaid wall towards the delivery end of the feed-board; and a pair of clamping means slidably connected to the said tubular member and respectively clamped to opposite lateral edge portions of the teed-board.

3.- A teed-board attachment as per claim 2,

in which the wrinkle remover comprises two llO ter, the said tube having a fiat base wall on the delivery board and another face sloping upward from the top of the said board toward the said delivery end at an acute angle to the first named face, an inner tube of similar transverse section extending for part oi? its length into the outer tube and slidably fitting the same, guides respectively disposed in the oppositely directed ends of the two tubes; and two clamps each having a shank extending into one of the guides and each having another portion arranged for securing the clamp to the feed-board.

5. A wrinkle removing device as per claim l, in which each guide comprises a metal strip oi? inverted U-shaped transverse section arrying a pair of oppositely directed flanges, the said flanges being secured to the upper face of the base wall of one of the said tubes.

(3. A wrinkle removing device as per claim 4:, in which the guide in the inner tube extends for substantially the entire length of the tube and in which the guide in the enter tube extends for a relatively short part of the length of the outer tube.

7. For use with the feed-board of a fiat bed printing press, a Wrinkle remover seated upon and extending transversely of the feedboard near the delivery end of the said board and having its upper face sloping upward from the top of the said board toward the said delivery end, and means for detaclr ably clamping the said wrinkle remover to the feed-board; the said means comprising two clamping members each having a shank extending slidably into the wrinkle remover from one end of the latter and adjacent to the top of the teed-board, each clamping member also having an end portion hooked over one lateral edge of the it'eedboard and a clamping screw threaded through the said end portion and engaging the bottom of the feed-board.

Signed at Chicago, Illinois, January 30th, 1926.

JOSEPH l3. ROCHE.

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