Патент USA US2130409код для вставки
Sept. 20, 1938. P. G. AULSON ABRADING ROLLER Filed Jan. 16, 1937 1'. 6. 2,130,409 Patented Sept. 20, 1938 2,130,409 UNITED STATES PATENT OFFICE 2,130,409 ABRADING ROLLER Philip G. Aulson, Salem, Mass, assignor to The Aulson Tanning Machinery Company, Salem, Mass., a corporation of Massachusetts Application January 16, 1937, Serial No. 120,854 2 Claims. (Cl. 51—194) This invention relates to abrading rollers for use in various types of machines which are adapted for use in producing smooth surfaces on various materials as for instance, hides and 5 leathers. The main object of the invention is the provi sion of means for attaching the abrading sheet to the surfacing roller in such manner that when in use it will ?rmly contact with the entire pe ripheral wall of said roller and be so locked thereto that all slipping of said sheet thereon will be effectually prevented. Another object of the invention is the providing 1 sheet to be used in connection with the modi?ed 01 form of roller shown in Fig. '7, this ?gure being drawn to a reduced scale. Similar characters indicate like parts through out the several ?gures of the drawing. In the drawing, I0 is a revoluble shaft having 1O mounted thereon a hollow metallic cylinder II. This cylinder II has two peripheral slots l2 extending therethrough and preferably in aline of simple means whereby the sheet may be de tached readily from the roller when it is desired merit as shown in Fig. 1. Between the inner ends of these slots I2 is an to position another sheet thereon. ear l3 extending inwardly from the inner wall of the cylinder II. These objects are attained by the mechanism shown in the accompanying drawing. For the purpose of illustrating the invention two preferred forms thereof are illustrated in the drawing, these forms having been found to give satisfactory and reliable results, although it is to be understood that the various instrumentalities of which the invention consists can be variously 25 arranged and organized, and the invention is not limited to the precise arrangement and organiza tion. of these instrumentalities as herein shown and described except as required by the scope of the appended claims. 30 Of the drawing» Figure 1 represents an elevation of an abrading roller embodying the principles of the present invention with the abrading sheet omitted. Figure 2 represents an end View of the same.v 35 Figure 3 represents an enlarged sectional detail on line 3, 3 on Fig. 1, and showing the abrading . sheet secured to the periphery of the roller. Figure 4 represents a diagrammatical view of the sheet tightening shafts with an intermediate 40 supporting ear and other ears at the opposite ends of the roller associated with clamping means to independently lock each of the shafts in adjusted position. Figure 5 represents an enlarged sectional de tail of one of the end ears and the means for clamping the winding shaft in adjusted position. Figure 6 represents a plan of a sheet of abrad ing material to be used on said roller, this ?gure being drawn to a reduced scale. Figure ‘7 represents an elevation of a modi?ed form of roller in which the sheet winding shafts are out of alinement and parallel to each other. Figure 8 represents an enlarged sectional de tail on line 8, 8 on Fig. '7. 55 sheet winding shafts tobe used in the modi?ed form of roller with its supports at opposite ends thereof, and Figure 10 represents a special form of abrading Figure 9 represents a diagram ‘of one of the The cylinder l I also has extending inwardly from its inner wall and at its opposite ends ears lél, which ears have notches l5 formed therein. The notches i5 have a width equal to the diam eter of a shaft l6 adapted to be disposed at one end in the notch 15 of an ear 14, said shaft I6 being retained in said notch l5 by means of a 25 transverse pin ll extending across said notch. The opposite end of this shaft I6‘ is disposed in a cylindrical hole in the intermediate ear 13, said ear l3 forming a lose bearing or support for the inner ends of both shafts I6. Each shaft I6 is provided near its outer end 30 with a ?ange I8 bearing against the inner wall of an ear [4. Each shaft I6 is provided outside of the flange [8 with a thread IS on which is mounted a revoluble clamping nut 20. 35 Extending into the outer end of each shaft I6 is a ?at-sided socket 2i adapted to receive a wrench by which the shaft 16 may be rotated. When the shaft I6 has been rotated su?iciently it may be locked in its adjusted position by turn 40 ing the nut 20 on the thread l9 causing the ?ange E8 to impinge upon the inner face of the ear I4. Each shaft I6 is provided with a longitudinal slot 22 between the ears l3 and I4. Preferably the metallic cylinder is covered by 45 a layer of yielding material 23, this material hav ing slots 24 therein registering with the periph eral slots I2 in the metallic cylinder II. A special form of abrading sheet 25 is used in connection as shown in Fig. 6. The opposite ends of this sheet 25 are bifur 50 cated leaving two projecting portions 26 to be inserted through the slots 24 of layer 23, the slots 12 in the cylinder H and the slots 22 in the shaft I6. 55 2,130,409 When the projecting portions I6 have been thus inserted through the slots I2, 22 and 24 as ‘shown in Fig. 3, the shaft I6 may be rotated about its axis drawing the abrading sheet 25 tightly against the periphery of the roller and p then locked ?rmly in its adjusted position by means of the clamping nut 20. The peripheral slots I2 are preferably formed in the cylinder I I diagonally to the rotating shaft 10 I0 of the cylinder II. Heretofore, short metal cylinders of this char acter with a single diagonally disposed periph eral slot therein have been used but when longer cylinders have been used it has been found that 15 the abrading sheet 25 will bulge in the center of the roller and will not be held ?rmly against the periphery of said roller. Obviously, this is very objectionable and this objection has been overcome by providing the 20 intermediate ear [3 extending inwardly from the inner wall of the cylinder and forming a loose bearing or support for the abutting ends of two separate rotatable shafts I6 which may be ro tated independently of each other with the pro 25 jecting portions 26 of the abrading sheet 25 in serted therein. , By tightening this abrading sheet 25 in this manner and by utilizing two separate shafts l6, the entire surface of the abrading sheet 25 is 30 held taut in contact with the peripheral wall of the cylinder II or the yielding covering 23 surrounding said cylinder II. By making the abrading 35 contact with of the length the rollers in the manner described sheet 25 may be retained ?rmly in the roller at all points regardless of said roller. If V desired, the peripheral slots l2 in the cyl inder I I may be out of alinement with each other but must be parallel with each other, as shown 40 in Fig. 7. In this modi?ed form of roller two interme diate ears I3 are used each having a cylindrical hole therethrough to form a loose bearing or sup port for the inner end of one of the slotted shafts I6. One long projection 28 at one end of the sheet 21 and the shorter projection 28 at the opposite end of the sheet are inserted through the slot 22 of one shaft I6, and the other pair of pro jections 28 are inserted through the slot 22 of the other shaft I6 in the manner hereinbefore described. Superior results are obtained by mounting the abrading sheets 25, 21 on the rollers in the man ner described and this is particularly true when 10 the rollers have considerable length as they must have in some types of machines. It is believed that the operation and many ad vantages of the invention will be understood without further description. 15 Having thus described my invention, I claim: 1. An abrading roller having a hollow cylin drical metallic body provided with-two diago nally disposed peripheral slots extending toward each other from opposite ends thereof, said slots 20 being parallel to and out of alinement with each other; an ear extending inwardly from the inner wall of said cylindrical body intermediate the ends thereof and at the inner end of each slot; ears at the opposite ends of said body extending 25 inwardly and radially from the inner wall there of; a slotted shaft rotatable in each end ear and one of said intermediate ears; an abrading sheet having at each end two projecting portions for insertion one in each peripheral slot and the 30 slot of a rotatable shaft; means for rotating each slotted shaft; and means for locking each slotted shaft in adjusted position. 2. An abrading roller having a hollow cylin drical metallic body provided with two peripheral 35 slots extending toward each other from opposite ends thereof, said slots being parallel to and out of alinement with each other; an ear extending inwardly from the inner wall of said cylindrical body intermediate the ends thereof and at the inner end of each slot; ears at the opposite ends of said body extending inwardly and radially from the inner wall thereof; a slotted shaft ro tatable in each end ear and an intermediate car; an abrading sheet having at each end two pro When the peripheral slots I2 are out of aline ment, it is necessary to use a specially formed sheet 21 of abrading material, such as is shown jecting portions of different lengths for insertion in Fig. 10. This sheet 21 is bifurcated at both ends leav shaft; and means for locking each slotted shaft in adjusted position. 50 ing two projections 28 at opposite ends thereof, one projection at each end being longer than the other projection at that end. one pair in each peripheral slot and the slot of a rotatable shaft; means for rotating each slotted PHILIP G. AULSON.