US1457480A - Cooling device for curved stereotype printing plates - Google Patents

Description

Jun s, "192 3.

H. A W. WOOD I COOLING DEVICE FOR CUI WED STEREOTYPE PRINTING PLATES Origin Filed Sept. 16, 1913 wgl Patented June 5, 1923.

Y HENRY A. wrsn'woon, on EW roan, N. Y., AssIGNoaro woon Nnwsrarna MACHINERY CORPORATION, or NEW roan, N. Y., a ooarosarron or via 1 GINIA.

COOLING'IDEVICE non cuavnnsrnnno'ryrn rRINrING r Arns."

v Original application filed. September 16, 1913,'Seria1 No. 790,072. Divided and this application filed.

December 15,'1917,"Scria1 170.20733 T0 aZZ whom it may concern." 1

Be it lrnownthat I, HENRY A. VVrsn 700D, a citizen of the United States, residing at New York, in the county of New York and State of New York, have invented a new and useful Cooling Device for Curved Stereotype Printing Plates, ofwhich the following is a specification.

This is a divic'on of my case ber 16, 1913, SerialNo', 790,072, for finishing device for curved stereotype printing plates.

This invention relates to a cooling device for semi-cylindrical stereotype printing plates.

The principal objects of the invention are to provide improved means for cooling a plate and maintaining it at the Proper size, and to provide improvements in the details of construction of the cooling device to which the plate is delivered from the finishing mechanism.

Reference is to be had to the accompanying drawings in which- Fig. 1 is an elevation of a plate cooling device constructed in accordance with this invention showing its relationship to finishin mechanism; 1

ig. 2 is a side elevation of a portion of the device and connected mechanism on en larged scale, partly broken away to show the interior construction and in section along a central, longitudinal, vertical plane; and

Fig. 3 is a transverse sectional view of the cooling trough. Referring especially to Fig. 1, the invention is shown as applied to a type of stereotype machine in which the plate, after being discharged from thefinishing arch 30, slides down into a cooling device. This cooling device is provided with a plate 33 at the end over which the finished plate slides as it passes into the cooling device. The stereotype plate sets down over this plate 33 and the latter acts as a stop to prevent the discharge of water beyond the end. At the other end the stereotype plate engages a plate 34 which is yieldingly mounted as indicated. Thus both ends of the printing plate are closed to prevent splashing.

The printing plate in descending into the cooler engages a lever 35 which operates a filed Septein Renewed November 16, 1922.

valve 36 and permitsthe passage'of water into a pipe 37 which is connected to a spraypipe 38 inside the plate for the purpose ofcooling .the same: The shaving. archis also shown as being cooled bymeans of a pipe 40 for supplying the fluid to a chamber 4:1

therein and having .a discharge 4-2 which? supplies the pipe '37. The water from the cooling device is discharged through a drain pipe 43.

During this time the printing I late supported on a pair of track 45 having inside them a pair of adjustable sizing stops 46 mounted on platforms 4:7 and adjusted by screws 48. so that the concave surface will be of proper diameter to fit the press cylinder when the plate is cooled. This mechanism is provided because the application of a coolingfiuid against the inside of a curved plate causes the concave surface to be cooled first and to contract. The, outside or convex surface retains its heat longer and does not contract simultaneously with the concave surface. Thus during the cooling process the first action would be to decrease the diameter of the plate temporarily and then as the diameter of the plate becomes, uniform throughout, the diameter would increase. The stops 46 prevent this alternate increase and decrease and keep the diameter uniform at all times so that it will fit a cyle inder of a press. The usual increase is merely a restoration to normal and is prevented here by eliminating the decrease.

The operation of" the machine briefly is as follows: A plate after being finished is freed to slide out of the finishing archb=y- Although I have illustrated and described This is for sizing the plate only a single embodiment of the invention,

I am aware of the fact that many modifica-.

tions can be made in the construction here-,

in shown, and that it can be applied to other types of stereotyping machinery without departing from the scope of the invention as expressed in the claims; Therefore, I

I do not Wish to be limitedin these respects,

but what I claim is:- v

l. The combination of a cooling device arranged to receive plates and having tracks for supporting the plates, and means adjacent to said tracks for holding the plates in fixed position while being cooled.

2. The combination of a cooling device for plates having horizontal tracks for receiving the plates, and adjustable sizing stops adjacent to said tracks for holding the plates in fixed position While being cooled.

3. A cooling device for plates having an arch, horizontal tracks for receiving the plates from the arch, and adjustable sizing stops adjacent to said tracks for holding the plates in: fixed position while being cooled.

l. A cooling device for plates having horizontal tracks for receiving the plates, and adjustable sizing stops adjacent to and between said tracks for holding the plates in fixed position While being cooled and preventing their contraction.

5. A cooling device for printing plates having a pair of horizontal tracks for receiving the side edges of the plates, a spray pipe, and end plates for closing the ends of the printing plate during cooling and preventing the splashing of the Water through said ends, one of said end plates being stationary and the other yieldingly mounted.

6. A cooling device for printing plates having a pair of supports for the side edges of the plates, a central spray pipe, and end plates for closing the ends of the printing plate during cooling and preventing the splashing of the Water through said ends.

7. The combination with a horizontal plate cooling device, of a semi-circular plate at one end of the cooling device in position for the plate to slide over it, and a yielding plate at the other end of the cooling device in position to receive the forward end of the stereotype plate.

In testimony whereof I have hereunto affixed my signature.

HENRY A. WISE WOOD.

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