US450456A - Machine foe scouring metal - Google Patents

Description

(No Model.) 3 sheets-Sheet 1. E. O. GOSS. MACHINE FOR SOOURING METAL.

Patented Apr. 14,1891;

(No Model.) 3 Sheets-Sheet 2.

E. 0. GOSS.

MACHINE FOR SGOURING METAL.

No. 450,456. I Patented Apr. 14, 1891. z

. (No Model.) 3 Sheets-Sheet 3.

E. 0-. GOSS.

. MACHINE FOR SGOURING METAL.

Patented Apr. 14, 1891.

UNITED STATES PATENT OFFICE,

EDXVARD O. GOSS, OF XVATERBURY, CONNECTICUT, ASSIGNOR TO THE SCOVILL MANUFACTURING COMPANY, OF-SAME PLACE.

MACHINE FOR SCOURING METAL.

SPECIFICATION forming part of Letters Patent No. 450,456, dated April 14, 1891.

Application filed November 17, 1890. Serial No. 371,667. (No model.)

To aZZ whom it may concern.-

Be it known that I, EDWARD O. Goss, of Waterbury, in the county of New Haven and State of Connecticut, have invented a new Improvementin Machines for Scouring Metal; and I do hereby declare the following, when taken in connection with accompanying three sheets of drawings and the letters of reference marked thereon,to be a full, clear, and exact description of the same, and which said drawings constitute part of this specification, and represent, ill- Figure 1, a side View of the machine complete; Fig. 2, a top or plan View of the same; Fig. 3, a longitudinal central section through the machine, on line a w of Fig. 2; Fig. 4, an enlarged View of a portion of the frame, showing the bearings of the feed-rollers at one end and the bearings for the first pair of scouring-rollers.

This invention relates to an improvement in machinery for scouring or finishing the surface of flat metal.

In the manufacture of rolled sheet metal or metal plate preparatory for market it is in many cases required to perform the operation commonly called scouring the surfaces. Various devices have been employed for scouring sheet metal, the most successful being that in which the metal is passed be tween positively-driven scouring-rollers, the metal being wound upon a reel at one end, tending to draw it through the machine as fast as the operation of scouring is performed. Vhile such an apparatus works satisfactorily on a long continuous strip of metal, it is not well adapted for metal in comparatively short sheets or metal too thick to be readily wound upon a reel.

The object of my invention is the construe tion of a machine which may be adapted to scouring short or independent sheets, plates, or bars of metal; and the invention consists in the combination of one series of securingrollers arranged upon stationary axes, asec- 0nd series of similar rollers, arranged above the said first series of rollers, but automatically adjustable with relation to said first series of rollers, so as to adapt themselves to the varying thickness which may pass between the two series of rollers, with a pair of feed-rolle rs at the delivery end of the series of rollers, and a like pair of feed-rollers at the opposite end of the said series of rollers, with pulleys on the arbors of each of the said rollers, and corresponding pulleys at each end of the machine in connection with the feed-rollers, an endless band passing around the said end pulleys and the intermediate roller-pulleys, whereby a like revolution is imparted to all the rollers of the said two series, the surface revolution of said two series of rollers being more rapid than that of the surface revolution of the said two sets of feed-rollers, and whereby the feed of the sheet through the rollers is so much slower than the Velocity of revolution of the intermediate rollers, that the said intermediate rollers produce a corresponding rubbing effect upon the surface of the metal passing between them, and as more fully hereinafter described.

A represents the frame of the machine, which is supported on suitable legs B or otherwise. In suitable stationary bearings C in the frame a series of rollers D are arranged, (here represented as three,) and represented as of equal diameter and all in the same plane.

Directly over the rollers D a like series of rollers E are arranged; but this second series of rollers are supported in bearings F, which are arranged in vertical guides G in the frame, (see Fig. 4,) and so that each of the rollers E of the upper series is vertically adjustable toward or from the corresponding rollers below and each independent of the other, their own gravity tending to yieldingly hold them in their proper relation to the rollers below, and so that as the thickness of anything passing between the rollers shall vary the upper rollers will adapt themselves accordingly. The rollers of both series should be of equal diameter. These two series of rollers are the scouring-rollers.

At the entrance end of the machine a pair of feed-rollers H I are arranged, the lower roller being arranged in a fixed bearing J and the upper roller I in a Vertically-adjustable bearing K, (see Fig. 4,) the latter being provided with a springL and an adjusting-screw M at each bearing, whereby a yielding pressure may be applied to the roller I. arbor of the lower or fixed roller II a pulley N is arranged,and at the opposite end of the machine there is a like pair of rollers O P, the lower rollerO being supported in stationary bearings and the roller P in yielding bearings the same as that shown and described for the roller I at the entrance end of the machine. The plane between the feed-rollers at both ends of the machine is in line with that between the intermediate or scouring-rollers. The pressure of the feed-rollers is such that their frictional hold upon the metal passing between them is so much greater than that of the scouring-rollers that the scouring-rollers may operate upon the surface of the metal without interfering with the advance of metal by the feed-rollers. On the arbor of the lower or stationary roller a pulley Q is arranged of the same diameter as that of the pulley N. These pulleys, as here represented, are outside the frame of the ma- On each of the arbors of the lower chine. series of intermediate rollers a pulley R is arranged, these pulleys being preferably all of the same diameter, and on the upper series of rollers like pulleys S are arranged. (See Fig. 1.) The pulleys Q and N are of considerably larger diameter than the pulleys R and S. Around the pulleys Q N and the intermediate pulleys Rand S an endless band T runs, which connects all the pulleys, the lower run of the band from the pulley N passing up and around the first pulley R of the lower series of rollers, thence back, upward, and over the corresponding pulley S of the first roller of the series above, thence down and around the next pulley R of the lower series, thence back up and around the second pulley S of the upper series, and so on to and around the pulley Q, and so that the revolution imparted to the lower rollers will be in the opposite direction to that of the upper rollers, and so that the adjacent surfaces of the rollers all run in the same advancing direction; but the size of the pulleys N and Q is such with relation to the pulleys R and S that the surface velocity of the rollers D and E will be considerably greater than the surface velocityof the feed-rollers at both ends of the machine, the velocity of the said feed-rollers being alike at both ends of the machine.

Revolution is imparted to the pulleys from a driving-shaft U, supported in bearings V on the frame, and carrying, as here represented, a loose and fast pulley NV and X at one end. At the other enda pinionY is made fast to the shaft U, which works into a corresponding gear Z on the arbor of the pulley Q. The direction of revolution of the parts is represented by arrows.

In Fig. 2 the same arrangement of pulleys and band is made upon both sides of the machine, so that power is applied to both ends of the rollers.

,In operation power is applied to produce On the the revolution of the feed-rollers and of the intermediate rollers D and E. The metal to be scoured is passed between the first feedrollers I H at the entrance end of the machine, which forces the metal forward at a velocity corresponding to the surface travel of the said feed-rollers II I. Thence the metal passes between the first pair of the intermediate or scouring rollers, thence through the second pair, and so on until the feed-rollers O P at the opposite end are reached, the metal being in surface contact with all the rollers, the rollers yielding, as before described, to adapt themselves to thethickness of the metal, and so that firm contact is had with both surfaces, the metal being represented in broken lines, Fig. 3. The surface velocity of the intermediate or scouring rollers being considerably greater than that of the travel of the sheet under the action of the feed-rollers, the scouring-rollers produce a rubbing upon both surfaces of the metal, and so as to scour those surfaces, any suitable scouring material being applied as desirable to produce the required result. By the arrangement of two pairs of feed-rollers, one at the entrance and the other at the exit end of the metal, the metal is driven by the first pair of feed-rollers through the scouring-rollers until the feed at the opposite end is reached. Then when the last end of the metal has passed from the first pair of feed-rollers the rollers at the exit end of the machine will continue their hold upon the met-a1 and draw it through the machine until it finally delivers it complete from the machine. This is the operation when the metal is of a length somewhat greater than the distance between the two pairs of feed-rollers; or if the metal be so thickas to possess the requisite rigidity the metal may be shorter, a second piece of metal abutting against the first, so as to force said first piece of metal through until it is taken by the exit teed-rollers, the machine being thus adapted to scouring thick rigid plates or bars.

By this construction of machine the operator has nothing to do butsimply introduce one end of the metal to the entrance feed-rollers. From that time the machine takes care of itself and the metal is delivered complete from the other end of the machine. The operator may continue feeding pieces or sheets 1 in succession, introducing the forward end of one as soon as the last end of the preceding piece or sheet shall have passed beyond the entrance feed-rollers.

To adjust the tension of the endless band which drives the several rollers, an idler a is hung upon an axis 1) in a bracket d, hinged to the frame, as at e, and so as to swing in a vertical plane, the position of the idler a. being between one of the feed-roller pulleys and the next pulley in the series of scouring-rollers and so that the band will run over the said idler. The bracket is hinged so that it may swing up and down in a vertical plane, and the pulley stands directly in the path of the band, as seen in Fig. 1. The bracket is provided with a suitable handle f and is also constructed with a toothed segment g, the teeth of which are adapted to engage a dog h on the frame, and so that as the pulley is raised to increase the tension a corresponding tooth ofthe segment will engage the said dog and hold the pulley at any point to which it may be set; or whenever it is desired to lessen or remove the tension the segment is thrown up from the dog, when the idler will drop, as seen in broken lines, Fig. 1. This tension device may be applied to increase the.

pressure of the upper series of rollers toward the lower seriesthat is to say, if a greater pressure is required upon the metal between the scouring-rollers the idler is raised to increase the tension of the band, and as the band practically forms loops around the upper and lower rollers such increased tension serves to draw the rollers more closely together and to increase the pressure between the rollers; or the removal of the tension, as indicated in broken lines, Fig. 1, will so loosen the band that the revolution of the intermediate rollers may practically cease. Thus the operation of the scouring-rollers is at all times within the control of the operator.

From the foregoing it will be understood that I do not claim, broadly, a machine for scouring sheet metal, which consists of an upper and a lower series of driven scouring-roll- ,rollers and to the said two series of rollers,

the surface revolution of the said series of rollers being more rapid than the surface revolution of the said feed-rollers, substantially as described.

2. The combination of a series of rollers arranged in stationary bearings, a correspond.- ing series of rollers arranged in yielding bearings above the said series of rollers, and a pair of feed-rollers at each end of the said series of rollers, one of each pair of feed-rollers being arranged in a stationary bearing, and the other roller of each of said pairs arranged in a yielding bearing, a pulley on the arbor of each stationary feed-roller and a corresponding pulley on the arbor of each of the rollers of the said two series, an endless band passing around the two pulleys of the feedrollers and one run of the band alternately around the pulleys of the said two series of rollers, the diameters of the several pulleys being such with relation to each other that the surface velocity of the rollers of the said two series will be more rapid than the surface velocity of the said feed-rollers, but all in the same working direction, substantially as described.

3. In a machine for securing metal, a series of rollers arranged in stationary bearings, a corresponding second series of rollers arranged above the first series 0f,rol1ers,but in yielding bearings, a pair of feed-rollers at each end of the said two series of rollers, one of each of the pairs of feed -rollers being in a stationary bearing, and the other roller of the said pairs of feed-rollers arranged in a yielding bearing, the stationary rollers provided each with a pulley upon its arbor, and the two series of rollers each provided with a corresponding pulley, an endless band around the pulleys of the-said feed-rollers, one run of said band passing alternately around the pulleys of the said two series of rollers, and an adjustable idler arranged to bear upon the said band between one of the feed-roller pulleys and the next roller of the series, substantially as and for the purpose described.

In testimony whereof I have signed this specification in the presence of two subscribin g witnesses.

EDWARD O. GOSS.

\Vitnesses:

T. R. HYDE, J r., M. L. SPERRY.

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