US2040998A - Printed sheet drier - Google Patents

Description

May 19, 1936. EM, J M 2,040,998

PRINTED SHEET DRIER Filed June 16, 1934 Patented May 19, 1936 UNITED STATES PATENT OFFICE 4 Claims.

This invention relates to handling of sheet material.

This invention has utility when incorporated in driers for paper sheets from printing presses and to promote regularity in stacking, due to minimizing the disturbance from static electricity.

Referring to the drawing:

Fig. 1 is a side elevation, with parts broken away, of an embodiment of the invention at the delivery of a reciprocating bed type of printing press;

Fig. 2 is a plan View of the device, with parts broken away;

Fig. 3 is a section on the line IIIIII, Fig. 2;

Fig. 4 is a section on the line IVIV, Fig. 2;

Fig. 5 is a section on the line VV, Fig. 2; and

Fig. 6 is a perspective View of a flanged split ring clamp to serve as a shield.

Printing press roll I is shown as having drive 2 therefrom for lower or supporting endless tapes or conveyors 3. From this gear train 2, gear train 4 extends to drive upper opposing hold-down tapes or guard strings 5. The gear trains 2, 4, as Well as the tapes are mounted in frame 6 on shaft 1 as an axis and have side rails 8. The printed sheet from the roll is directed by fingers 9 to travel between the tapes 3, 5, for delivery to table H3. The several tapes 3, as well as the tapes 5, are transversely adjustable for the desired spacing in the paper width. It is usual to conduct the printed sheet centrally between the bars 8 and space the supporting upper reach of the tapes 3 to carry the printed sheet with opposing tapes 5 having lower reaches to hold the sheet in position on the supporting traveling tapes.

The opposing reaches, that is, the upper reaches of the tapes 3 and the lower reaches of the tapes 5, travel in the common direction away from the roll I and at a common speed.

In accordance with the invention herein, U- brackets I I, I2, are seated on the respective rails 8. Set screws l3 at these brackets may be op- .erated to grip the respective rails 8 and thus hold the brackets l l l2, from shifting. It is thus a simple matter to locate this device and determine the spacing thereof from the printing roll I The spacing may be at a greater distance from the roll I as the speed of the machine is greater. The bracket H carries nipple M to a T fitting l5. Flexible fuel supply as gas hose l6 connects to this T fitting l5 and therefrom this fuel supply may flow by duct I! to fitting l8 at the bracket 52, thereby providing cut-off cock l9 at the front or operator side of the printing press so that the cutting off of the supply of gas may readily occur while the supply line 5 is not in a cluttering position for the access of the operator to the printing bed'as the delivery is tilted upward on the axis shaft 1 and held in such up- 5 wardly set position by strut 26.

From this valve l9 the supply gas may flow into tube 2| parallel with the duct'll and also extending between the brackets ll, l2, and having blank ends at such brackets. pipe 2! on its upper side toward the supporting reaches of the tapes 3 has transversely of such series of tapes, series of minute openings 22. In practice, with natural gas, these openings are not of sufiicient size to permit insertion of a pin point therethrough. As the supply of fuel is to this pipe 2 l, escaping gas from these ports or jets 22 may be lighted to provide flames 23, desirably of a height not to reach paper sheet 24 as carried by the tapes 3.

Embracing this tube 2| and of a number corresponding with the sets of tapes 3 are split sleeves 25 having connection by pins 26 to collars 2?. In these collars 21 set screws 28 coact as set up to anchor the sleeves 25 as shields over jets or 25 ports 22. It is thus convenient for the pressman, as he is locating the tapes 3, 5, likewise to back off the set screws 28 and in register with such tapes locate the sleeves 25. As so located, these set screws 28 may be tightened and the 30 ports 22 in the region which would allow the flames 23 to attack the tapes 3 are thus obscured or cut out. In practice this gas jet burner type of drier coacts with the freshly printed sheet, even in the rapid .delivery operations, to contribute to the drying of the ink but additionally there is efliciency, whether due to ionizing action of static electrical charge from frictional source on the paper sheet promoted by atmospheric conditions, or grounding effectiveness due to conductivity through the heated zone.

There is accordingly met in practice such elimination of static electricity disturbances that the sheets will move without clinging or fluttering and deposit with regularity in a symmetrical stack upon the table It). This operation is of course a feature of great convenience to the pressman, in that there is minimized the occasion for stopping the press to adjust clogged sheets in the delivery. There is the symmetrical stack which reduces the labor in disposal. While in an emergency the pressman may cut off the gas supply to extinguish the flames, there is in the normal operation rare occasion so to do, for the burner, even upon stoppage of the press, does This duct or wing nut 31; Accordingly, slacking of this Wing ing a frame for transferring a' printed sheet nut 3|, as slacking of the set screw 28, releases this clamp sleeve for adjustment longitudinally of the pipe 2| and then setting up of the wing nutr3l effects the holding in a position to shield a desired number and' location of the jets 22 against-escape of gas fuel of whatever type adopted.

What is claimed and it Letters Patent is: I I V 1. Ina printing press, delivery means embodytherefrom,- a j plurality of conveyor tapes independently transversely adjustable on said frame,

I bracket means mounted on and slidably adjustable along said frame; a burner carried by bracket 1' means'and extending transversely of said tapes x 30 V f upwardly'directed"ports; shields carried on said and therebelow, said burner providing a series of burner to close the ports below each respective tape and thereby 'making'the burner discontinuous' in its transverse extent, said shields being shiftable along the burner corresponding to the independently adjusted tape positions, and means clamping said shields to the burner spective adjusted positions;'

2: In a printing press, delivery means embody ing a frame for transferring a printed sheet in their reis desired to secure by therefrom to a depository, a plurality of conveyor tapes independently transversely adjustable on said frame, a slide engaging said frame, 7

a burner carried by said slide extending transver'sely of said tapes and therebelow, said burner providing a series of upwardly directed ports, shields carried on said burner to cover the ports below each respective tape, said shields being shiftable along the burner corresponding to the independent adjusted tape positions and embodying burner embracing sleeves, rings fixed with said sleeves, and means carried by said rings to positively clamp said sleeves in adjusted position.

3.'In aburner of the class described, said burner having a series of ports, a shield for closing a portion of said ports embodying 'a split sleeve embracing the burner, a ring surrounding the sleeve, means fixing said ring with said sleeve, and means carried by the ring to clamp said sleeve against transverse shifting on said burner. V v r '4. In a printing press, delivery means embodying a frame for transferring a printed sheet therefrom'to a depository, a plurality of conveyor tapes independently transversely adjustable on said frame, an operators station on one side' of said frame, a slide carried by said frame, a duct carried by said frameextending transversely of saidrtapes, a duct extending to, said transversely extending duct and connected thereto at the opposite side of said frame from the operator sta' tion, a burner carried 'bysaidslide extendng transversely of said tapes and therebelow, said burner having a connecting duct therefrom to the first mentioned transversely extending duct, and a valve in said latter duct adjacent the operators stat-ion.

' ELDO M. JUMP.

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