US Patent: 2,192,788
|
| Filing Machine
|
|
Patentees:
|
| Benjamin Grob (exact or similar names) - West Allis, Milwaukee County, WI |
| Theodore Grob (exact or similar names) - West Allis, Milwaukee County, WI |
|
|
Patent Dates:
|
| Applied: |
Sep. 13, 1933 |
| Granted: |
Mar. 05, 1940 |
|
Patent Pictures:
[
1 | 2
]
|
|
|
USPTO (New site tip)
Google Patents
Report data errors or omissions to steward
Joel Havens
"Vintage Machinery" entry for Grob, Inc.
|
|
Description: |
| Abstract:
his invention relates to improvements in filing machines of the type wherein the work is subjected to the abrasive action of a continuous series of files carried by an endless chain which coacts with spaced pulleys driven so as to constantly advance the successive files in the same direction past the work.
(4) This ,application is a continuation in part of the co-pending applications resulting in the Patents No. 1,949,742, issued March 6, 1934, and 1,958,477, issued May 15, 1934, and particularly with respect to certain claims divided out of the application resulting in the patent last mentioned. An object of the invention is to provide an improved machine of the type wherein the successive files are most effectively guided, and in which 'the files are so constructed and co-act with each other in a manner whereby a continuous and highly efficient abrasive surface is presented to the work.
Claim:
In a filing machine, a guide fixedly supported at both ends and having elongated plane bearing surfaces on opposite sides of a central groove, a series of files of greater width than said guide each having spaced central recesses and rear side portions co-operable with said guide surfaces on opposite sides of said recesses, the adjacent ends of the successive files being disposed diagonally in one direction across said guide while the file teeth extend diagonally in the opposite direction, a main U-shaped sheet-metal link attached directly to each file and having punched integral projections of less height than the link thickness and of less width than said groove snugly engaging said recesses between said guide surfaces, other U-shaped sheet-metal links disposed between said main links and co-acting with said diagonal file ends between said guide surfaces, and solid links pivotally connecting the adjacent ends of said main and other U-shaped links to provide a carrier chain movable within said groove. |
|
){kind=link}
){kind=link}