US 2585410 A
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C. W. SCHOTT STAMPING WHEEL Feb. 12, 1952 Filed July 1, 1948 [Wei Liar.- (#49155 #150707:
ll llill Patented Feb. 12, 1952 STAMPING WHEEL Charles W. Schctt, Pittsburgh, Pa., assignor to United States Steel Company, a corporation of New Jersey Application July 1, 1948, S erial No.--36', 5 11 2 Claims. (o1. 101 28) This invention relates to improvements in stamping wheels for marking steel billets or the like.
An object of the invention is to provide improved stamping wheels in which the dies and the wheel mounting are subject to a minimum of mechanical shock, thereby reducing wear on these parts and prolonging their useful life.
A further object of the invention is to provide improved stamping wheels which have buffer means for cushioning the initial contact between the wheel and each article, such as a billet or the like, and for automatically placing the dies in motion at the same linear speedas the article before the dies make contact.
In accomplishing these and other objects of the invention, I have provided improved details of structure, a preferred form of which is shown in the accompanying drawing, in which:
Figure 1 is an end elevational view of an improved stamping wheel embodying features of the present invention and mounted for marking billets;
Figure 2 is a side elevational view of the wheel with the face plate removed to illustrate the mechanism; and
Figure 3 is a sectional view of the wheel taken substantially on line III-III of Figure 2.
Referring more in detail to the drawing:
The stamping wheel of the present invention comprises the usual disk I around the circumference of which dies l2 are removably affixed. The wheel is afiixed on a shaft I3 which is rotatably supported in any suitable mounting, fixed bearings l4 being illustrated. The wheel is mounted over a roller table l5 which forms a course for travel of articles l6, such as steel billets or the like. Passing articles engage the wheel and cause it to rotate and thus the dies imprint marks in the upper surface of the article.
In accordance with the present invention, a plurality of buffer segments I! are mounted on the face of disk It! for radial sliding movement. As shown in Figure 2, the segments form a circular series which extends around the entire circumference of the disk. The disk has a plurality of pegs I8 protruding from its face and each segment has a radial slot l9 receiving one of said pegs. Thus engagement of the pegs with the extremities of the slots limits movement of the segments. An annular hub 20 of slightly greater thickness than the segments is fixed to shaft 13 next to disk l0 and the segments are spaced radially from said hub. Compression springs 2i bear between the outer circumference of hub and the inner faces of the segments, preferably being received on bosses 22 on the hub and segments. The compression springs normally force the segments outwardly so that they protrude beyond the circumference of the disk somewhat farther than dies I2, but the segments are retractible radially against the action of the springs sufficiently to enable the dies subsequently to engage the article and imprint a mark therein. A retaining plate 23 is carried by shaft l3 over the hub and segments. The elements are retained in assembled relation by nuts 24 and 25 secured to the shaft outside the retaining plate and disk respectively.
In operation, as articles [6 approach the wheel, they first engage successive buffer segments I! which are cushioned by springs 2|. Said segments and springs absorb the initial shock of engagement, and thus there is no abrupt shock on the dies nor on the wheel mounting. Engagement of the article with the segments also starts the wheel rotating and by the time the dies engage the article, both the dies and the article are moving at the same linear speed. Thus wear on the dies is reduced, since contact between the dies and article does not initiate movement of the wheel.
While I have shown and described only a single embodiment of the invention, it is apparent that modifications may arise. Therefore, I do not wish to be limited to the disclosure set forth but only by the scope of the appended claims.
1. A stamping wheel for imprinting marks in the surface of moving articles comprising a disk, dies aifixed to said disk at the circumference thereof, means rotatably mounting said disk in position for the dies to engage passing articles, a hub adjacent said disk, a plurality of buffer segments, means on said disk supporting said segments for radial sliding movement on the face of said disk, said segments forming a circular series spaced radially from said hub, compression springs between said hub and said segments urging the latter outwardly, said segments normally protruding from the circumference of said disk beyond said dies to contact articles ahead of said dies and being retractible to enable the dies subsequently to engage the articles, a retaining plate over said hub and said segments, and means retaining said disk, said hub and said retaining plate in assembled relation.
2. A stamping wheel for imprinting marks in the surface of moving articles comprising a shaft, a disk aflixed to said shaft, dies affixed to said 3 disk at the circumference thereof, means rotatably mounting said shaft in position ifOl the dies to engage passing articles, a hub on said shaft adjacent said disk, a plurality of pegs protrudingfrom the face of said disk around said hub, a plurality of buffer segments having slots receiving said pegs, said segments being radially slidable with respect to said disk and forming a circular series spaced radially from said hub, compression springs between said hub and said segments urging the latter outwardly, said segments normally protruding from the circumference of said disk beyond said dies to contact articles ahead of said dies and being retractible against the action of said springs toenabie the dies subsequently to engage the articles, a retaining plate on said shaft over said hub and said segments, and means on said shaft retaining said 4 disk, said hub and said retaining plate in assembled relation.
CHARLES W. SCHOT'I.
' REFERENCES CITED The following references are of record in the file of this patent:
UNITED STATES PATENTS Number Name Date 423,394 Saxton Mar. 11, 1890 445,291 Treat Jan. 2'7, 1891 469,931 Briggs Mar. 1, 1892 631,028 McConville Aug. 15, 1899 1,443,164 Bracken Jan. 23, 1923 1,540,081 Manischewitz June 2, 1925 1,599,461 Dinkelman Sept. 14, 1926 2,424,006 Verrinder July 15, 194'! 2,447,991 Stempel Aug. 24, 1948