Claims
- 1. Apparatus for concurrently making two axially spaced cuts on an elongated bar stock type workpiece, comprising, in combination:
- a. chuck means for grasping a portion of said workpiece;
- b. an elongated support underlying the portion of said workpiece projecting outwardly from said chuck means;
- c. a pair of annular cutters having cutting teeth formed on their inner annuli;
- d. a sleeve secured to each said annular cutter;
- e. a pair of sleeve supports adjustable mounted on said elongated support and respectively journalling said sleeves for rotation about the workpiece length axis with both sleeves and cutters surrounding the projecting end of said workpiece;
- f. means for concurrently rotating said sleeves; and
- g. means for concurrently moving said sleeve supports transversely relative to said workpiece to produce two cuts therein spaced according to the longitudinal spacing of said sleeve supports.
- 2. The combination defined in claim 1 wherein said sleeve supports are respectively moved in opposite transverse directions so that the annular cutters are concurrently engaging opposite sides of said workpiece.
- 3. The combination defined in claim 1 wherein a workpiece support is disposed between said sleeve supports to support the one severed length of the workpiece on completion of said cutting operation.
- 4. Apparatus for concurrently making two axially spaced cuts on an enlongated bar stock type workpiece, comprising, in combination:
- a. rotatable chuck means for grasping a portion of said workpiece and rotating same about its length axis.
- b. an elongated support underlying the portion of said workpiece projecting outwardly from said chuck means;
- c. a pair of annular cutters having cutting teeth formed on their inner annuli;
- d. a sleeve secured to each said annular cutter;
- e. a pair of sleeve supports adjustably mounted on said elongated support and respectively journalling said sleeves for rotation about an axis parallel to the workpiece length axis with both said sleeves and said cutters surrounding the projecting end of said workpiece;
- f. means for concurrently rotating said sleeves; and
- g. means for concurrently moving said sleeve supports transversely relative to said rotating workpiece to produce two cuts therein spaced according to the longitudinal spacing of said sleeve supports.
- 5. The combination defined in claim 4 wherein said sleeve supports are respectively moved in opposite transverse directions so that the annular cutters are concurrently engaging opposite sides of said workpiece.
CROSS REFERENCE TO RELATED APPLICATION
This application is a continuation-in-part of U.S. patent application Ser. No. 822,007, filed on Aug. 5, 1977 in the name of the inventor hereof and entitled "Metal Sawing Machine and Saw."
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Number |
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167645 |
Cohen et al. |
Sep 1875 |
|
480461 |
Gilmore |
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3024687 |
Brownstein |
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Continuation in Parts (1)
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Number |
Date |
Country |
Parent |
822007 |
Aug 1977 |
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