US Patent: RE19,999
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| Filing Machine
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Patentees:
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| Benjamin Grob (exact or similar names) - West Allis, Milwaukee County, WI |
| Theodore Grob (exact or similar names) - West Allis, Milwaukee County, WI |
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Patent Dates:
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| Applied: |
May 22, 1930 |
| Granted: |
Jun. 09, 1936 |
| Reissue Information: |
| Reissue of 1,949,742 (Mar. 06, 1934) |
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Patent Pictures:
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Joel Havens
"Vintage Machinery" entry for Grob, Inc.
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Description: |
| Original No. 1,949,742, dated March 6, 1934, Serial No. 454,583, May 22, 1930. Application for reissue March 2, 1936.
Abstract:
An object of the invention is to provide an improved -abrasion device which is simple and durable in general construction, and which is moreover relatively flexible and highly efficient in operation. Another object of the invention is to provide various improvements in the construction of power operated filing machines or the like, wherein the abrasive or working surfaces ]I5 are movable in one direction only while engaging the work, and travel at substantially constant speed. A further object of the invention Is to provide improvements in the construction of endless file transporting structures for filing machines or the like, and improved mechanism for propelling such transporting structures. ,Stilt another object of the invention is to provide improvements in driving mechanisms and work supports for machine tools, and especially for tools wherein the stretch portion of an endless band type of tool carrier is utilized to perform the work intended. Another object of the invention is to provide various improvements in the details of construction and in the mode of operating filing machines or the like, whereby the cost of construction and operation thereof are reduced to a minimum while preserving maximum efficiency.
Claim:
In combination, a series or files, a U-shaped link secured to each of said files, other links connecting the successive U-shaped links of said 0 series, said other links having ends disposed between the side walls of the corresponding U- shaped links and having transverse openings of the same diameter as aligned openings in said side walls, and a pivot pin disposed within each set of said aligned openings, each of said pins having portions of reduced diameter co-acting with said wall openings. |
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