US1094202A

US1094202A - Cleaning and scouring attachment for metal rolls.

Info

Publication number: US1094202A
Application number: US65911211A
Authority: US
Inventors: John Dunlop; Jesse D Davidson
Original assignee: Individual
Current assignee: Individual
Priority date: 1911-11-08
Filing date: 1911-11-08
Publication date: 1914-04-21
Anticipated expiration: 1931-04-21

Description

J. DUNL01 & J. D. DAVIDSON.

CLEANING AND SGOURING ATTACHMENT FOR METAL ROLLS.

APPLICATION I'ILED NOV. 8, 1911 1,094,202, Patented Apr. 21', 1914.

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J. DUNLOP & J. D. DAVIDSON. CLEANING AND scounme ATTACHMENT FOR METAL ROLLS. APPLICATION FILED NOV. 8, 1911.

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1,094,202. Patented Apr. 21, 1914.

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UNITED STATES PATENT orrucn.

JOHN DUNLOP AND JESSE D. DAVIDSON, OF WELLSVILLE, OHIO.

CLEANING AND SGOURING- ATTACHMENT FOR METAL ROLLS.

To all whom, it may concern Be it known that we, JOHN DUNLOP and Jesse D. DAVIDSON, citizens of the United States, and residents of Wellsville, in the county of Columbiana and State of Ohio, have invented an Improved Cleaning and Securing Attachment for Metal Rolls, of which the following is a specification.

Our invention is particularly intended for cleaning and scouring the surface of metal rolls used for rolling steel plates or sheets. Such rolls become more or less rough and uneven, with the result that the sheets passing through the mill are not fiat and smooth, but rough and uneven, and are hence thrown out at the assorting table. By a method still in use, such rolls are scoured and smoothed by means of an emery block which is pressed against a roll by a long lever manipulated manually. This method is expensive, since it requires the labor of a man, and the mill must remain idle until the operation is completed, and it is also unsatisfactory in that the rolls are not faced uniformly but hollowed or grooved in places. Our apparatus is automatic and produces a. roll face which is smooth and uniform, steel sheets being rolled flat, without stopping the normal operation of the mill, so that an important economy and perfect mechanical result are effected and produced.

The details of construction, arrangement, and operation of the attachment are as hereinafter described, and illustrated in the accompanying drawings, in which- Figure 1 is a face view of a rolling mill with our improved attachment applied thereto. Fig. 2 is an end view. Fig. 3 is a view illustrating in vertical elevation and in section the chief portions of our attachment. Fig. 4. is a perspective view of a polygonal feed bar, together with the carrier for the grinder or scourer and the screw for feeding the same right or left. Fig. 5 is a face view of an end collar applied to the polygonal feed bar. Fig. 6 is a perspective view of the trip-rod for reversing the feed of the grinder carrier. Fig. 7 is a perspective view of a supporting head for one of the polygonal feed bars. Fig. 8 is a vertical section of the feed bar and feed screw, together with an elevation of the grinder and carrier therefor.

Specification of Letters Patent.

Application filed November 8, 1911.

Fig. 9 is a face view Patented Apr. 21, 1914. Serial No. 659,112.

of the grinder carrier. Fig. 10 is a vertical section illustrating the main portion of the feed reversing mechanism. Fig. 11 is an end View of the parts shown in Fig. 10, a portion of the sprocket wheel being broken away. Fig. 12 is a face view of a shiftable clutch collar used for reversing the feed.

Referring in the first instance to Fig. l, the numerals 1 and 2 indicate heavy rolls between which steel or other metal plates are passed for rolling them fiat and smooth. These rolls are mounted in a frame or housing 3, and to them our improved grinding attachment is applied. Two polygonal bars 4: and 5 are arranged horizontally and parallel in front, and near the point of con tact, of the rolls 1 and 2. On these bars 4: and 5 the heads or carriers for the grinder proper are mounted to slide right and left, the same being indicated by numerals 6 and 7-see Figs. 4 and 8.

The grinder, or in other words, the scourer and cleaner 6 which works in contact with the surface of the roll, is held in a dove-tailed slot formed in the nearly vertical face of the

carriers

6 and 7. It is held always in contact with the roll by means which will be presently described, and it is reciprocated, alternately right and left, on the feed-bar by means of a screw-

shaft

8 or 8*, there being one applied to each of the feed-bars 4 and 5 and arranged in a longitudinal groove in the same, as shown in Figs. 3, 4 and 8.

The approximately cylindrical base or body of the

grinder carriers

6 and 7 is recessed to receive a nut 9, and a clamp-screw 10 is applied for holding the nut in firm contact with the screw 8 or S At the righthand end, the feed-bars 4: and 5 are supported in the housing 3 by means .of collars 11, and at the left-hand end they pass through the other housing 3, as shown in Figs. 1 and 3, and project on the left-hand side of said housing, as shown.

The polygonal bars 1 and 5 are rotatable around their axes, and, for effecting this to the extent required for holding the grinder 6 in contact with the rolls 1 and 2, we apply weighted elbow levers 12 and 13-see Figs. 2 and 3. Such levers are provided with heads that are fixed on the ends of the polygonal bars 1 and 5, and the weights 12" and 13 are applied to the free ends of the levers, so as to obviously turn the

grinder carriers

6 and 7 against the rolls. The contact of the grinders with the rolls prevents the further rotation of the bars 4 and 5.

It is obvious that the rotation of the

feedscrews

8 and 8 requires to be reversed when the

grinder carriers

6 and 7 have reached the ends of the rolls in either direction. For this purpose, we employ the following mechanism: As shown in Figs. 1 and 2, a sprocket wheel 14: is aflixed to the journal of the upper roll 1 and a chain 15 runs therefrom to a sprocket-wheel 16 mounted on a. counter-shaft 17 at the head of the left-hand housing. Thus, this shaft is constantly driven in one direction. On said shaft are mounted grooved pulleys 1S and on two pulleys 20 and 21 run belts 19, one of which is crossed, as shown in Fig. 2. The pulleys 20 and 21 are arranged as shown in Fig. 10, the same being mounted loose upon a sleeve 22 which is mounted rotatably on the cylindrical extension 23 of a head 2a which is applied to the end of the upper polygonal bar 4- that projects from the housing. Such head has a pendent portion 24 which serves as a guide and support for trip mechanism that will be presently described.

The upper feed-screw S has a journal or cylindrical extension 8 which, as shown in Fig. 10, passes through the cylindrical extension 23 of the head 24: and projects from it, the projecting portion being reduced and made polygonal. The sleeve 22, which is free to rotate on the journal 23, is secured to the screw journal 8" by means of a clampscrew 25. Thus the sleeve and the upper feed-screw 8 rotate together, and, since the feed-screw is provided with a cylindrical collar 26 that abuts shoulder on the head 2a, the sleeve is held on the hollow journal 23.

A sprocket-wheel 27 is fixed on the outer end of the sleeve 22 and from it a chain 28 runs to a sprocket 29 that is fixed on the lower feed screw 8 It will thus be apparent that in whichever direction the sleeve 22 is rotated, the lower feed-shaft will be also rotated in the same direction.

Between the two grooved loose pulleys 20 and 21, we arrange a cylindrical clutch 30- see Figs. 10 and 12and the same is mounted on a feather 31, so that it rotates with the sleeve 22, but may be shifted right or left thereon in order to bring it into engagement with either of the pulleys 20 or 21. It is apparent that when incontact with one of the pulleys, the

screws

8 and 8 will be driven in one direction and when the clutch is shifted in contact with the other pulley, the screws will be driven in the opposite direction.

To effect the shifting of the clutch, which must occur when the grinders reach the ends of the rolls, we employ trip mechanism whose construction and operation are as follows: A bent arm 32sec Figs. 1, 3, 10 and 11- is hrovided at its upper end with a fork adapted to enter a circumferential groove in the slidable clutch 30. The horizontal. member of this bent arm is pivoted to a lever 33 which is fulcrumed at M on the pendant 24;, and to the upper end of such lever is pivoted a trip-rod 35-see Figs. 3, i, and (5. This trip-rod is adapted to slide in a groove formed in the under side of the upper polygonal bar l, and at suitable points it is provided with a series of tapped holes, any one of which tapped holes is adapted to receive screws 36 which serve as stops for limiting the movement of the grinder carriers in either direction.

It will now be understood that when the grinder carrier (3 approaches one end of the roll 1, it will come in contact with the lefthand screw-stop and thereby shift the triprod 35 to the left, which will in turn tilt the lever 33 and thus, through the medium of the bent arm 32, shift the clutch. 3O correspondingly, with the ultimate result that the clutch will be removed from contact with one of the pulleys and carried into engagement with the other one, thus finally changing the rotation of the two screws 8 and S,

so that the grinder carriers (3 and 7 begin their reverse movement. It is further apparent that this operation is uniformly repeated automatically at the end of the reciprocating movements of the grinder carriers. The holes provided in the trip-rod enable the screw-stops to be shifted as may be required by rolls of different lengths or to meet other conditions.

In Fig, 10, we illustrate a means for holding the clutch-shifting rod 82 in either of the two bositions to which it may be shifted. It will be seen that the horizontal arm of such rod slides in a hole 37 provided in the pendent extension 24 of the head 24,-, and that such arm is provided with two adj accnt recesses 88 which are adapted to receive a conical point 89 which is supported upon a screw 40, a spring 4E1 being interposed between them. In effect this device is a springstop which, while serving to hold the clutchrod from accidental movement in either direction, yet permits it to be shifted forcibly through the medium of the trip-rod 35, as already described.

In Figs. 8 and 9, we illustrate an attachment to the grinder carrier which consists of a pocket or receptacle L2 and a scraper 43, the latter being a thin steel blade whose free end works in contact with the periphery of a roll and thus scrapes and cleans the same, the material removed by it falling into the pocket, from which it may be removed at intervals as required. The pocket is formed of sheet metal, its sides being parallel and projecting inward and secured to the circular body of the grinder carrier, as indicated.

It is obvious that in place of the horizontal bars 4 and 5, which are described as polygonal, various other forms of bar may be employed, and we do not desire to limit our invention in this particular.

e have described belt gearing for rotating the screw-shafts reversely, but desire it understood that we may employ any other suitable means for this purpose.

What we claim is 1. The combination with a mill roll, of a carrier for the grinding and cleaning medium, a horizontal polygonal bar on which said carrier is adapted to slide right and left and thus traverse the length of the roll, a screw shaft, and a nut secured to the carrier and engaging said shaft, the latter being arranged in a longitudinal groove in said polygonal bar, a slidable clutch which is operatively connected with the screw shaft, pulleys mounted on the screw shaft journal, means for rotating them in opposite directions, a trip operated by the grinder carrier at the end of its movement in either direction, and means operatively connecting such trip with the clutch, whereby said clutch is shifted between said pulleys for reversing the rotation of the screw shaft, substantially as described.

2. The combination with a mill roll, of a grinder carrier adapted to traverse the same, a horizontal bar on which the same is mounted to slide, a screw shaft which is operatively connected with the carrier for feeding it along the supporting bar and provided at one end with a cylindrical extension constituting a journal, a sleeve which is clamped to the screw shaft journal, so as to rotate therewith, wheels mounted loose on the sleeve, and means for driving them in opposite directions, a shiftable clutch arranged between such wheels and adapted to slide on a feather connecting it with the sleeve, and trip mechanism for reversing the rotation of the screw shaft and the feed of the grinder carrier, such mechanism operatively connecting the clutch with the grinder carrier, such mechanism including a rod having stops with which the grinder carrier is adapted to come in contact upon reaching the limits of its traverse, whereby the clutch may be shifted, substantially as described.

3. The combination with a mill roll, a grinder carrier, and a horizontal bar supporting the same, of a head provided with a socket adapted to receive one end of the bar and having a cylindrical hollow extension constituting a journal, a screw shaft which is operatively connected with the grinder carrier for traversing it on the face of the roll, said shaft being provided with a cylindrical journal having its bearing in the journal of the aforesaid head, a sleeve mounted rotatably on the head journal, and means for clamping it to the journal of the screw shaft, pulleys mounted loose on the sleeve, a clutch arranged between them and adapted to slide on a feather secured to the sleeve, a trip mechanism operatively connecting such clutch with the grinder carrier, whereby when the latter reaches the limits of its traverse in either direction, the clutch is shifted from engagement with one pulley into engagement with the other pulley, thereby reversing the operation of the screw shaft, substantially as described.

JOHN DUNLOP. JESSE D. DAVIDSON.

lVitnesses:

F. I. CRUMBACKER, J OHN RIEL.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C.