US1937412A - Web roll stopping device - Google Patents

Description

O. C. ROESEN WEB ROLL STOPPING DEVICE Nov. 2s, 192.3..A

, 1928 5 Sheets-Sheet l Original Filed Dec. l5

Nov. 28, 1933. Q, c;- RQESEN 1,937,412

WEB ROLL STOPPING DEVICE original Filed Dec. 15. 1928 s sheetssheet 2 l@ may:

/MWM

Nov. 28, 1933.

.O. C. ROESEN y WEB ROLL sToPPING DEvIcE Original Filed Dec. 15. V1928 3 Sheets-Sheet 3 UNITED STATES PATENT GFFICE WEB ROLL STOPPING DEVICE Oscar Charles Roesen, Eastchester, N. Y., assignor to Wood Newspaper Machinery Corporation, New York, N. Y., a corporation of Virginia Application December 15, 1928, Serial No.

326,337. Renewed July 29, 1932 2 Claims. (Cl. 242-75) The principal objects of this invention are to others. On account of its form and the idler 24, prevent the web roll in a printing press from the belt or belts 20 will be capable of wrapping running ahead when the press stops quickly; 'to around the running roll throughout a certain arc. provide an improved belt for engaging the web I have provided weights 25 on the bottom of the roll for this purpose and to provide fluid operating frame 21 which can be exchanged for heavier or 00 means for accomplishing the same object. lighter ones to provide the necessary tension to Other objects and advantages of the invention hold each frame 21 with its belt 20 firmly against will appear hereinafter. l the running roll. Y

Reference is to be had to the accompanying This belt 20 is provided with a roughened outer drawings in which surface which can be provided simply with back- 65 Fig. 1 is an end view of a reel stand for web wardly extending projections 26 on it as shown rolls with a preferred embodiment of this invenin Fig. 4. It can be made up also of pieces of tion shown therewith; leather 27 riveted together as shown in Fig. 5 and Fig. 2 is a side view of the same; having the ends of the pieces 2 7 projecting out Fig. 3 is a View similar to Fig. 1 showing a in points 29 forming leather teeth as in the case 70 modification; of the projections 26 to bear on the running roll Figs. 4 and 5 are edge views of two forms of and assist in holding it back. The diameter of belts which can be used on these two constructhe pulley 22 is such that the speed of the belt is tions; the same as the surface speed of the web. On a Fig. 6 is a View similar to Fig. 3 showing anquick stop when the running roll tries to run 75 other modification, and away the rough grain of the belt 20 prevents it.

Fig. 7 is a similar view showing a fourth form. I have shown three belts 13, 13 and 20 as being It is well known that when the printing press made differently, but of course, all of them may stops suddenly the web roll which is delivering be made with a roughened surface as illustrated paper to the press, being aheavy body and having in Figs. 4 and 5. This constitutes an effective "30 a speed of rotation to deliver the web at web Way for accomplishing this result and prevents y speed, will tend to run ahead on account of its undue rotation of the running roll when the press inertia. This supplies paper to the press when Suddenly SiOlOS. the press is stopped and tends to pile up a loose In the ferm ShOWn in Fig-` 3 there are Simply web which obviously interferes with the subsebelts 20 on the usual frames 14, aS ShOWIl n Fig. 1, 85 quent operations. This invention is designed to and 0n a quick Step 0f the DreSS the drag 0f the overcome this difficulty in a simple and convenbelts prevents the 1011 11 from running aWaY and ient manner. brings it to a quick stop. This form diifers from Referring first to the form shown in Figs. 1 and that ShOWn in Figs. 1 and 2 Only in the faC' that 2, I have shown an ordinary reel stand 10 with the belts on the frame 14 are all made rough on 90 the web rolls 11 mounted thereon and one of the bearing side and the frames 21 are not used. them delivering the web to the press over a guide In 'the Orm ShOWn in Fig. 6, a Construction is roll 12. I have shown in this figure two belts 13 shown in which the frame 14 is used and the belt which engage the running roll and are both alike 13 employed upen the Same- On each frame 14 arranged on pivoted frames 14 receiving their iS IOCated a bracket 30 Carrying on it a hopper 95 power from pulleys 15 on a shaft 16. This shaft 31 for a friction creating material such as sand is connectedby a gear 17 with the press and the and alSO having a IIOZZle 32- 0n this. bracket iS pulleys are of such size as to run the belt at a solenoid 33 connected with the press to be slightly less than web speed to hold the web back energized When the Dress Stops. The energizing and provide the necessary tension. These be1ts of the solenoid operates valves 34 and 35 to con- 100 also run over idler pulleys 18 on the frame 14 as neet a Source 0f air under pressure threllgh a is well understood. This feature is well known pipe 36 With the nOZZle and force the friction in the art. creating material against the surface of each Instead of having all the belts across the web belt 13. Thisadds to the diculty of rotation of of this type I provide one or more belts 20 between the running roll and soon brings it to a stop. 105 them on other frames 21 pivoted on the axis of In Fig. 7 I have shown a construction in which the shaft 16 and operating by pulleys 22 and over a frame 40 pivoted on the shaft 16 is provided idlers 23 and 24. This frame preferably is of an with a pivoted link 41 carrying an idler 18 and angular form instead of being straight but it the belt 42 passes over this idler and the tension hangs down from the shaft 16 as well as the roller 24aswell asthe pulley 15, which drives the 110 belt. 'I'he pulley 24 is mounted on a lever 43 which is connected by a spring with the frame and kept in position to stretch the belt and keep it under tension. On the frame 40 is a solenoid 44 which operates, on the stopping of the press, to open a valve 45 which allows air to be conducted into a cylinder 46 and forces forward a piston 47 therein. This piston is loosely connected with the swinging arm 41 and pushes it forward against the resistance of a spring 48 until it gets into the dotted line position. Here the belt is wrapped around the running roll 11 and soon brings the running roll to a stop.

In all the forms of this invention it will be seen that the roll which is delivering the web to the press will be stopped quickly after the press is stopped and prevented from delivering a length of loose web to the guide rolls which guide the web to the press so that as soon as the press starts again it will take up whatever slack there is while speeding up and there will be no sudden pull on the web to start the web roll into rotation again at full speed.

Although I have illustrated and described only four forms of the invention I am aware ofthe fact that other modifications can be made therein by any person skilled in the art without departing from the scope of the invention as expressed in the claims. Therefore, I do not wish to be limited in this respect but what I do claim is:-

1. In a web supply device for a printing press, the combination with a su port for the running roll, of a belt engaging t e surface of the running roll for normally holding the web back and means for running said belt from thek press, said belt having rearwardly extending projections from its surface engaging the web roll whereby when the belt stops these projections will tend to stop the rotation of the running roll.

2. In a web supply device for a printing press, the combination with means for supporting a running roll, of a shaft geared to the press to rotate therewith, pulleys on said shaft of such size as to rotate at a surface speed equal to the speed of the web, belts on certain of said pulleys engaging the running roll, the outer surface of such belts having projections to assist in slowing up the web roll when the shaft stops, pulleys for supporting said belts being located in position for wrapping them around the running roll and belts on others of said pulleys engaging the running roll where the web leaves it and running it at slightly less than web speed to apply tension.

OSCAR CHARLES ROESEN.

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