US977410A - Drying-roll. - Google Patents

Description

J. A. LAMP & S. C. STINER.

DRYING ROLL.

APPLIGATION FILED JAILSI, 1910.

977,410. Patented Nov 29, 1910.

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JOSEPH A. LAMP AND SAVENIOUS C. STINER, OF MGKEESPORT, PENNSYLVANIA.

DRYING-ROLL.

T all whom it may concern:

Be it known that we, JOSEPH A. LAMP and Savnxious C. Srinnn, residents of McKeesport, in the county of Allegheny and State of Pennsylvania, have invented a new and useful Improvement in Drying-Rolls; and we do hereby declare the following to be a full, clear, and exact description thereof.

Our invention relates to rolls for drying or heating sheet-metal preparatory to coating the same with tin or other coating material.

In an application filed by us onthe first day of May, 1909, Serial No. 493,4:17, we have set forth and claimed a method of treating plates preparatory to tinning or coating the same, and one of the steps of that method consisted in passing the plates, after coming from the pickling or water bath, through heated rolls which act to dry the plates and at the same time heat the same, and thereby dispensing with what is commonly known as black annealing. The plates were passed directly from these drying or heating rolls to the cold rolls and were then in condition for coating.

Our present invention relates to these drying or heating rolls, and most of the features of the present invention were illustrated in the drawings of the above named application.

The present application was filed for the purpose of claiming the rolls set forth in the aforesaid application, together with certain additional features, all of which will be fully hereinafter set forth and claimed.

In the drawings Figure 1 is a plan view of a set of our improved drying or heating rolls; Fig. 2 is a side elevation of the same; Fig. is an enlarged longitudinal section of one of the rolls and shows the connections for supplying the heat thereto; Fig. 4: is a section on the line 4 d Fig. 3, and Fig. 5 is a section on the line 55 Fig. 3. x

In the drawings the numeral 2 designates a suitable stand or housing to support the rolls and form the proper bearings therefor. Any suitable number of rolls may be employed and in the present instance, we have illustrated four sets. The rolls 3, as more clearly illustrated in Fig. 3, comprise the hollow $116114: of suitable diameter and thickness, and are preferably formed of cast-iron or cast-steel, although we do not wish to limit ourselves to any particular metal or even that they be formed of cast-metal. The

Specification of Letters Patent.

Application filed January 81, 1910.

Patented Nov. 29, 1910. Serial No. 541,046.

roll 3 has the main cylindrical working face 5 with which the sheets come in contact in passing through the rolls, and at the ends of said roll just beyond the working face 5, are the reduced portions 6 of smaller diameter than the main working portion 5 of the roll. This forms the abrupt shoulders? at each end of the roll just beyond the working faces. The object of these reduced portions 6 will be fully hereinafter disclosed. The roll is cast with the spiders 8 at each end thereof, and projecting from said spiders are the necks 9 with the elongated neck-portions 10 projecting beyond the same. The elongated neck-portions 10 form the ournals of the roll and are j ournaled within suitable bearings 11 in the housings 2. One of the elongated neck-portions 10 is longer than the other and secured thereto is the sprocket wheel 12 for driving the roll as hereinafter set forth.

Secured to the neck-portions 9 of the roll are the fenders or guards 13, said fenders being illustrated as secured in place by the set screws 14 so that said fenders may be adjustable on the neck-portions 9 at different distances from the end of the roll 3.

In order to provide for the introduction of heat within the roll 3 to heat the working faces thereof, we have illustrated a means of effecting this by the use of gaseous fuel, although we do not wish to confine ourselves to the employment of any particular kind of fuel, or in fact to any particular way of heating the roll. Accordingly the burner 15 is employed which in reality is a pipe with apertures 16 formed therein and located within the cylindrical shell l of the roll. The pipe 15 extends through the hollow neck portions of the roll and is supported without coming in contact with the roll journals so that there is no frictional contact of the same with said pipe when the roll is rotated. One end of the pipe 15 is closed by the cap 17 and at the opposite end of the pipe or burner is the mixer 18. The gas is supplied from a main supply pipe 19, which has the branch-pipes 20 leading therefrom, which enter the mixer 18, and said branch-pipes are controlled by valves 21.

In the construction illustrated only the lower rolls of the different sets are powerdriven, and for this purpose the shaft 22, journaled in the housings, has the sprocketwheel 23 which is connected up by drivingchain 24 to any suitable source of power.

The shaft 22 carries at its ends the sprocketwheels 25 and 26. The sprocketqvheel 25 has the chain'QT'which passes up" and around the sprocket-wheel 28 for driving an inner roll and outer roll. The sprocket-wheel 26 has the chain 29 which engages the sprocketwheels 30 to drive an inner and outer roll. The upper rolls are driven by friction and are held in contact with the lower rolls by means of the springs 31, which engage the bearing-boxes 32 which support the upper rolls. The adjusting screws 33 are employed for regulating the tension of the springs 31.

In the use of-our invention, the rolls are heated by turning on the gas and lighting the burners 15. When the rolls are properly heated the sheets or plates, as they come from the pickling bath or washing trough, are fed to the rolls?) and in their passage through said rolls'are dried and heated to a certain degree so that when they emerge therefrom the moisture has been entirely removed, and the plates have asurface which enables them to be-passed directly to the cold-rolls without the step of black anneal ing. As the rolls are open-ended, and the combustion of the gas takes place within the rolls for heating the same, a draft is created through the rolls which tends to cause 'the flame and productsof combustion to escape at the ends of the roll where said rolls will be subjected to the greatest amount of heat. In order to, prevent this increased heat at the ends of the rolls from unduly heating the working faces of the roll at the ends thereof, we employ the reduced porti0ns'6 at the ends of the rollswhich absorb this increased heat and protect the actual working face 5 of the roll. If these reduced portions'at the ends of: the rolls (rare omitted, the heat at the ends of the roll will tend to expand the roll-at its ends and increase its diameter at the end portions over the diam eter of the intermediate portions'of the roll. This increase in'diameter of the roll'at the ends would not givean even working surface and the plates passing through the rolls would not be brought into full cont-act with the rolls at its intermediate portions and consequently would not be properly dried or heated. The reducedportions 6 protect the working face of the roll from this intense heat at the ends of the roll and consequently the working face of the roll remains at a uniform diameter throughout, and its whole face in direct contact with the entire surface of the sheet passing through it.

The fenders or guards 13 act to protect the journals of the roll from the heat emitted from the ends of the roll and consequently the journals do not heat up and give trouble from overheated bearings. In addition these fenders 13 act as dampers, as they may be moved to and from the end openings of the roll, and in this way the draft may be regulated and the heat of the roll accurately controlled. Another point of advantage of our invention lies in the elongated neck-portions 10 which are at such adistance from the heat that they are not materially affected by the same, but the neck-portions 9 of larger diameter absorb this heat, and as they do not form the j'OUllIltllS no objection arises from their being overheated.

lVhat we claim is:

1. A roll for the drying and heating of sheet-metal preparatory to coating, comprising a cylindrical shell with open ends, means for introducing heat into the interior thereof, and the outer ends of said roll being of smaller diameter than the working or intermediate faces.

2. A roll for drying and heating sheetmetal preparatory to coating, comprising a cylindrical shellwith'open ends, means for introducing heat to the interior thereof, and the outer ends of said roll being of smaller diameter than the working or intermediate faces and forming shoulders on said roll.

3. A roll for drying and heating sheetmetal? preparatory to coating, comprising a cylindricalshell with open ends means for introducing heat to theinterior thereof. necks extending beyond the ends of said shell, and fenders on said necks.

at. A roll for drying and heating sheetmetal preparatory to coating, comprising a cylindrical shell with open ends, means for introducing heat to the interior thereof, necks extending beyond the ends of said shell, and adjustable fenders on said necks.

A roll for drying and heating sheetmetal preparatory to coating, comprising a cylindrical-shell with open ends, means for introducing heat to the interior thereof. necks extending beyond the ends of said shell, said necks having elongated neck-portions of smaller diameter than the main body portion of said necks to form journals for said roll.

In testimony whereof, we the said Josnrii A. LAMP and Savnxrous C. S'IINER have hereunto set our hands.

JOSEPH A. LAMP. SAVEN'IOUS C. STINER. \Vitnesses THOS. J. LEWIS, A. M. SIMON.

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