Select Page

File:Blower worm gear.png

Original file (2,320 × 3,408 pixels, file size: 87 KB, MIME type: image/png)

Summary

1907 US patent image of multi-start worm gear as used in hand-cranked blower. Patent US869247 by Henry Keiper.


https://patents.google.com/patent/US869247A/en

File history

Click on a date/time to view the file as it appeared at that time.

Date/TimeThumbnailDimensionsUserComment
current06:24, 17 March 2021Thumbnail for version as of 06:24, 17 March 20212,320 × 3,408 (87 KB)Drf5n (talk | contribs)1907 US patent image of multi-start worm gear as used in hand-cranked blower. Patent US869247 by Henry Keiper. https://patents.google.com/patent/US869247A/en

You cannot overwrite this file.

The following page uses this file:

Metadata

This file contains additional information, probably added from the digital camera or scanner used to create or digitize it.

If the file has been modified from its original state, some details may not fully reflect the modified file.