US12401A - Machine for feeding paper to printing-presses - Google Patents

Description

` UNITED sTATEs `PATENT oEEioE. j N

A. B. CHILDS AND W. AEICKINSON, OF ROCHESTER, NEW YORK.

MACHINE FOR FEEDING PAPER T0 PRINTING-PRESSES.

Specification of Letters Patent No.

To all whom may concern.' v l Be it known that we, A. B. CHILDS and HENRY vVVyDIoxnasoN, residing at Rochester, in the county of Monroe and State of New York, have invented new and useful Improvements in Printing-Press Feeders, of which the following is a specification.

Our invention consists in a certain mode of employing currents of air to raise and discharge sheets of paper from the pile for the purpose of feeding print-ing presses, of which the following is a description, the letters and figures used in said description referring to a drawing of our machine accompanying this specification.

a is the caseA of a fan blower connected with the central inlet or suction pipe c and the outletor discharge pipe f. l

The fan b is driven bythe pulley l the shaft of which passes throught-he fan case and through the center ofthe inlet pipe c carrying near its end the endless screw 2 which takes into the periphery of cog wheel 3 on the shaft 6. On this shaft is a smaller cog wheel 4 which takes into the cog wheel 5. The cog wheel 5 is attached to and carries the suction and blast trunk c, which has a working joint at fw and turns on its axis, which has its bearing in the pillar a. This trunk as represented in the drawings has a narrow slit extending nearly its whole length on the side which is lowermost in the position shown in the drawings, and this slit is shown in section in Figure 2. Exteriorto this slit and extending nearly its whole length and attached to trunk c is a smaller `tube o-r trunk Z which also has a narrow slit below, sho-wnl in section in Fig. 2. Vithin trunk c and extending nearly its whole length is a smaller trunk e having a slit e extending nearly its whole length. Just beyond the end of the slit e is a hole through the trunk c which as the trunk re` volves comes directly opposite the open end of the blast pipe f, and at other times is open to the air, the leak through this hole and also hole m being of no material consequence. As trunk c revolves hole m which opens into the larger cavity or chamber of trunk c is brought into opposition with the open mouth of blast pipe g.

At the point e2 connected with blast pipe f is a short branch pipe, the open end of which is expanded into a half collar p which embraces z' and covers an opening through the same not shown in the drawing. The

12,401, dated February 20, 1855.

trunk i revolves so as to bring the opening opposite the mout-h of the tube e2 at the i proper time. The open ends of blast pipe f and g wherev they press against theperiphery of the trunk c1 might also be provided with such collars if necessary to prevent leakage though we have not found it important.

Within the trunk c at n there is a valve c which turns upon the stem n and at L isa regulating valve opening inward, the pressure being adjusted bythe regulating weight Having thus described the various parts composing the'machine we will now proceed to describe their operation. When the fan revolves the air entersthe central trunk c (the valve c2 being open) through the slit describedv as in the lowermost part of trunk c', and escapes from the fan case int-o t-he tube f and thence into trunk z' and out from the slit in the same manner as before de` scribed. The currents of air thus produced, viz.7 an inward current through trunk (Z and an outward one through trunk z', conspire to raise the luppermost sheet fro-m the pile. The sheet adheres to trunk Z over the slit in the same by outward pressure, and the effect of the outward blast, from trunk z' is to raise up and separate the whole length of the sheet from the pile. As the trunk c revolves in the direction of the arrow m it carries the sheet still adhering aro-und with it. When the trunk c has made a half revolution the valve c2 is closed and hole m covers over the mout-h of pipe g, and the hole connected with trunk e as before described comes opposite the mouth of pipe f; the inward draft thro-ugh trunk Z ceases and is succeeded by an outward blast through the same and also an outward blast issues from trunk e-thus throwing off the sheet onto the press board or table, into its proper posi-- tion to be seized by the lingers of the press.

The force of the blasts from the fan is regulated by the regulating valve 71,. The valve e2 is not shown in connection with any gearing and the motion of the various parts is dependent upon that of 4the fan shaft but in actual service, the fan must be propelled by an independent connection with the source of power, and the valve stem together with all the parts connected with the changes and operation of the blasts must be connected and properly timed with the motions of the printing press by mechanical means which will be readily suggested by any skilful mechanic. It is evident by this arrangement that only one sheet can be lifted and delivered at a time. The projecting trunk Z is important inasmuch as it enables us to carry the point or slit to which the sheet is lifted to any desired distance from the center of motion without enlarging the trunk 0 and also prevents-the sheet from hugging the surface of trunk c which it would do if the slot were Within its surface.

The valve h is not only a regulator of the draft of the fan but when the shut off valve c2 is closed the fan is supplied through valve 7L which opens inward by the outward pressure, and it therefore acts in the two fold capacity of a regulating and supply valve. It is obvious that the efects of the various blasts might be attained by a vibratory instead of a rotary motion of the parts.

Ve claim as our inventionl. The raising and delivering theA sheet-s by means of the inward and outward ourrents, said currents being produced and operating in one and the Asame trunk through one .and the same slit or openin by means of the fan or its equivalent, trun o, valve c2, revolving trunk c, and pipe g and aperture m; and in combination therewith We claim the outward blast produced through the trunk e by the means set forth.

2. We claim in combination with the inward blast through revolving trunk of for raising the paper, the outward blast through revolving trunk v1 for separating the sheets7 as described.

3. We claim the projecting trunk d in combination with the main trunk c in the manner and for the purposes set forth.

4f. We also claim the combination of the regulating and supply valve z, with the shut off valve c2 in the manner and for the two fold purpose as set forth.

In Witness whereof we have hereto set our hands this eighth day of April in the year eighteen hundred and fty four.

A. B. CHILDS. HENRY W. DIC'KINSON.

Witnesses y T. CAMPBELL, E. HARMON.

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