US225280A - hawkins - Google Patents

Description

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J. TJHAWK INS. Deliver-y Apparatus for Pr'intin Np. 225,280,

g-Press-es.- Pat ented Mar. 9, 1880.

WITNESSES:

ATTORNEY N. PETERS. PHOTO-LITHOGRAFHER, WASHlNGTDN. D c.

'Nm STATES PATENT OFFICE.

JOHN T. HAWKINS, OF BROOKLYN, NEW YORK.

DELIVERY APPARATUS FOR PRINTING-PRESSES.

SPECIFICATION forming part of Letters Patent NO. 225,280, dated March 9, 1880.

Application filed May 19, 1879.

To aZZ whom it may concern:

Be it known that 1, JOHN T. HAWKINS, of Brooklyn, in the county of Kings and State of New York, have invented an Improvement in Delivery Apparatus for Printing-Presses, which improvement is fully set forth and illustrated in the following specification and accompanying drawings.

The object of the invention is to effect the delivery of stiff paper or card-board with the same efficiency and facility as the delivery of thinner material or ordinary printing-paper; and the invention consists of a certain combination of friction-wheels and retaining-bands, either with or without the addition of a flyframe, with the impression-cylinder of a printing-press, and of certain adjustable sheet-stops placed'upon the fly-fingers constituting the fly-frame of the machine, as is hereinafter more fully set forth-and claimed in detail.

In the accompanying drawings, Figure 1 is a sectional side elevation, and Fig. 2 a plan, of that form of printing-press which delivers the sheet or card from the top of the cylinder toward the front of the machine; and Figs. 3 and at are, respectively, a side view, partly in section, and an under view, of a fly-finger.

In the said figures, the letters S S designate the side frames of the machine.

The letter C designates the cylinder; F, the feed-board, and F the fly-board.

The letters f f designate the fly -fingers, which receive the sheet from the cylinder 0.

The letters Z Z designate the lifter-fingers, which lift the advancing edge of the sheet upon the fly-fingers f f.

The letters 9 g designate the gripers, which hold the sheet while being printed and release it at thetime the lifter-fingers raise its advancing edge.

The letters a to designate arms secured to the rod It, upon which the fly-fingers rest when receiving the sheet. The small ends of the arms a a carry a small shaft, 8, upon which are secured two narrow-facedpulleys or wheels,

19 p. The arms act are so adjusted as to allow the wheels 19 p to bear gently upon the surface of the cylinder 0.

The wheels 19 1) may be secured upon the shaft 8 in any position, and they and the shaft 8 rotate by frictional contact with the cylinder 0, the journals of the shaft 8 turning in the ends of the arms a a.

The letters I) b designate two narrow bands of metal, secured to a dovetail-formed bar, B, upon the under side of the feed board I. A part of each of said bands is made to conform to the circumference of the cylinder 0, and the bands themselves are adjustable laterally upon the bar B.

The mechanism for imparting motion to the cylinder, gripers, lifter-fingers, and fly-fingers, not being necesssary to the illustration of the invention, is not shown in the drawings.

The letters T T designate stops secured to two or more of the fly-fingers, as shown. Said stops form an inclined plane, up which the paper passes on its way to and upon the flyfingers. The lifter-fingers Z Z and fly-fingers f f are made with split sockets, grasping smoothly-turned rods, in order that said fingers may be readily adjusted, inter 80, either angularly or laterally.

By means of this construction the gripers, lifter-fingers, and fly-fingers severally move within or between each other, and require to be so adjusted that the said parts may be so placed as not to come into contact with each other, and in different positions for varying widths of sheets to be printed and delivered 5 but the inter-adj ustability, per se, of these parts I do not claim.

In the printing of card-board or stifi paper and delivering the same from this form of pLuSS, such stiff material straightens out after printing, and does not cling sufficiently to the cylinder after being released by the gripers to carry it to and upon the fly-fingers, the card or stiff paper falling back at b upon the form, unless released by the gripers before arriving at b, and taken from the cylinder by hand or some special mechanism. It is desirable, therefore, to deliver card-board upon the fly with equal facility and by means'of the same devices that are employed to deliver thinner material. In order to accomplish this desirable end, the wheels 19 p are provided, as above explained, and by their pressure upon all sheets of whatever material passing through the machine, keep said sheets in contact with the cylinder, the gripers opening and releasing the advancing edge of each sheet after said edge has passed under the Wheels 11 p. Said wheels Having thus fully explained the construccontinue to press upon the sheet, causing the I tion and operation of my said improtement in friction of the cylinders surface to drive the delivery apparatus for printing-presses, as of paper under them and fully upon the tly. my invention, I claim 5 The momentum of each sheet of paper or 1. The combination, with the fly-fingersff, 25 card carries its following edge beyond the of the adjustable stops T T near the outer stops T T, which stops prevent the cards or ends of said fingers, whereby centrifugal acpaper from being thrown 011' the fly by centri t tion upon the sheets of paper in process of deugal action as the fly is rapidly rotated over livery is prevented, substantially as set forth.

10 to the fly-board F. 2. In combination with the cylinder 0, the 30 The bands 0 b are placed iunnediately in retaining-bands b b and friction-wheels 1) 19, front of the Wheels 12 p, and both are so placed substantially as and for the purposes set forth. as to run upon the unprinted margins of the 3. In combination with the cylinder 0, the paper. The function of the bands I) b is to retaining-bands b b, friction-Wheels p p, and 15 prevent stifi" card-board from coming in confly-fingersff, provided with stops T T, subtact, on its printed side, with the under side stantially as and for the purposes set forth.

of the feed-board, and, as said bands touch JOHN T. HAWKINS. only the margins of a sheet, neither they nor \Vitnesses: the wheels 1) calrmar the perfection of the GEORGE OWEN,

20 work. F. G. OWEN.

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