US1584467A - Suction nozzle for printing presses - Google Patents

Description

May 11 1926. 1,584,467

S: H. PLUM. 2D., ET AL SUCTION NOZZLE FOR PRINTING PRESSES Filed August 14, 1924 gum/two 351 W Wow:

Patented May 11, 1926.

UNITED STATES 1,584,467 PATENT OFFICE.

STEPHEN HAINES PLUM, 21), OF MADISON, NEW JERSEY, AND HARRY DUFF, OF

BROOKLYN, NEW YORK, ASSIGNORS TO KLYMAK FEEDER COMPANY, A CORPORA- TION OF NEVJ JERSEY.

SUCTION NOZZLE FOR PRINTING PRESSES.

Application filed August 14, 1924. Serial No. 731,910.

This invention relates to suction nozzles for printing presses. More particularly this invention relates to improvements in suction nozzles of the character disclosed in the United States Patent Number 1,394,181, dated October 18, 1921, in connection with a Chandler & Price j ob printing press. I

As shown in said patent, the nozzle is mounted on an arm which is pivoted to the form member of the press, and as the press is operated, the nozzle is moved in over the pile of stock to be printed to pick up the top sheet, which is thereafter conveyed to and placed onto the platen.

It is the object of this invention to provide an improved nozzle of the character shown in the patent aforesaid, to which also reference is made for a complete disclosure of the operation of the nozzle. The invention is illustrated in the accompanying drawings in which Fig. 1 is a diagrammatic view of a portion of a Chandler & Price job press showing the nozzle in position.

Fig. 2 is a side View of the nozzle shown in position 011 top of the sheets just prior to the separation of the top sheet from the ile. p Fig. 3 is a similar view showing the nozzle in the position of having picked up the top sheet.

Fig. 4 is a View of the nozzle looking in the direction of arrow 4 in Figure 3.

Referring first to Figure 1 the press is identified as a typical Chandler & Price job press by the frame 1, platen 2 and form number 3. The paper stock 4 is supported on an auxiliary frame 5. To the form memher is pivoted at 6 a bracket 7 which carries an arm 8 supporting a transverse rod 9 which carries the nozzle 10.

The details of construction and operation of all of the foregoing parts are clearly disclosed in the above named patent to which reference is made for a full understanding thereof. Briefly, the operation is as follows: hen the press closes as in Figure 1, the nozzle is positioned on the sheets 4 at the edge thereof. When the press opens, suction is applied by any well known means (not shown) and the top sheet is separated from the pile. As the press continues its opening movement, the nozzle is moved to the right in the drawing in over the platen where the sheet is deposited at the proper time, the suction ceasing to function so as to release the sheet. In this brief description we have omitted reference to a sheet conveying mechanism upon which the sheet may be placed, and which mechanism in turn conveys the sheet to the platen. In the said patent such a mechanism is shown and described. It is, however, obvious, that it is immaterial whether the sheet falls from the nozzle onto the platen or onto some other mechanism so far as this invention is con cerned. In order to understand the following description it will be sufficient to bear in mind that the nozzle mechanism as such is carried on the aforesaid rod 9 which in turn is operated by the form member of the press.

Referring now to Figures 2, 3 and 4, the reference numeral 11 denoted a rather heavy nozzle bracket which slides on the said rod 9 so as to be adjusted transversely of the press. A. set screw 12 secured the bracket 1n position. The bracket has an upright portion 13 forming suitable guide ways 14, 14 in which slides a nozzle support 15. The latter is in the form of a flat piece provided at its bottom with two ears 16, 16, while at the top there is formed a small lug 17 and a sleeve 18 is secured to the support. A. thin rod 19 passes through the lug and sleeve 18. At the top the rod 19 is provided with an adjusting nut 20 and a pin 21 is fitted into the rod to prevent rotation thereof. The support 15 also carries a stop 22.

The nozzle head 23 is {voted at 24 in the aforesaid ears 16 and is provided with a suitable nozzle opening, in this instance in the form of a thin slit 25, which communicates with a nipple 26 to which a rubber hose 2? is attached. The other end of the hose is attached to the usual pump, not shown. F or the purpose of this disclosure the hose 2''? constitutes a means for producing suction in the nozzle as will be understood. Between the tail portion 28 of the nozzle head and the aforesaid rod 19 there is interposed a spring 29. 30, 30 are fixed stop pins in the ears 16.

During the operation ofthe press the nozzlo hangs in the bracket 11 in the position shown in Figure 3, where it will be observed, the nozzle support 15 has dropped or slid downward in the ways 14 until the stop 22 rests on the top edge of the bracket. At the same time, the nozzle head23 hangs on its pivots 24c in an inclined position regulated by the adjustment of the spring 29.

WVhen, however, the nozzle head comes to rest upon the paper as in Figure 2, the parts are so arranged that the rod 9 with the bracket 11 continues the downward movement and the nozzle isthereby compelled to take the position shown in Figure 2 or flat down on top of the paper. At time the stop; pins 30 come to rest on top of the nozzle head with the suction opening 25 in close contact with the paper. The suction is then applied and the paper picked up. As the press now opens, the rod 9 and bracket 11 are lifted and slid upon the nozzle support 15 until the bracket reaches the stop 22, when the nozzle support also is lifted.

During this movement and actuated by the spring 29, the nozzle head has been lifted or turned on its pivots 24:, which causes a rolling movement of the nozzle head and a similar and somewhat sliding movement of the top sheet as seen in Figure 3 which assists in separating the sheet from the pile. Thereafter the separated sheet is conveyed to the point of application, the suction is released and the sheet drops into position.

The nozzle mechanism as herein above described possesses several important advantages and novel features. The speed with which the nozzle head turns from the position shown in Figure 2 to the position shown in Figure 3 may be controlled and regulated definitely to suit the paper by a V careful adjusting of the spring tension by the nut 20. This is preferable to a gravity operatednozzle head such as is shown in the above named patent. Other advantages re side in the extreme simplicity of construction.

The foregoing is believed to be a full disclosure of this invention. It will be seen that a high degree of interchangeability and adjustability has been provided for.

\Vhile the invention is shown in its preferred form, yet it will be understood that changes and modifications will readily suggest themselves to persons skilled in the art and may be made without departing from the principle of the invention or the scope of the appended claim.

We claim A suction nozzle of the characterdescribed comprising a supporting bracket, a nozzle support adapted to move in said bracket by gravity, a suction nozzle head movably supported on said support, stops on the latter for limiting the movement of said nozzle head in one direction, a rod supported on said-nozzle support, a spring secured to the said nozzle head and the said rod and means for operating said rod to regulate the tension of the said spring to adjust the movement of the said nozzle head in the opposite direction. I

s. HAINES PLUM, 2D. HARRY DUFF.

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