WWT Shows CLICK TO: Join and Support Internet Horology Club 185™ IHC185™ Forums

• Check Out Our... •
• TWO Book Offer! •
Go
New Topic
Find-Or-Search
Notify
Tools
Reply to Post
  
Marsh Auto Hairspring Stud Pin Machine "Click" to Login or Register 
posted
* Hair spring stud pin is a tiny tapered pin used to secure the end of hairspring in hole thru stud.

When Charles W. Fogg, pantentee of the safety pinion was a young apprentice, hairspring stud pins were filed by hand from wire, held in a pin vise, twirled by thumb and finger. That was the old way. Later on a lathe and rotary file was employed, however the lathe had to be stopped, completed pin cut off, chuck loosened, wire advanced to correct distance for another pin. Wire only a few inches long could be used. This was a marked improvement but still very tedious. With Marshe's machine long lengths of wire were automatically fed thru the spindle, held in collet,rotated against a rotary file till completed, then sheared off at the correct length. These tiny tapered pins were produced at a rate of 20-35 per minuet according to the material used.

George Collard


Frank Menez
Trustee CRMI
 
Posts: 39 | Location: Somersworth, New Hampshire USA | Registered: February 18, 2005
Picture of Wayne C. Anderson
posted
On display at the CRMI

 
Posts: 886 | Location: Nebraska, in the U.S.A. Heartland | Registered: November 22, 2002
  Powered by Social Strata  
 


©2002-2021 Internet Horology Club 185™ - Lindell V. Riddle President - All Rights Reserved Worldwide

Internet Horology Club 185™ is the "Family-Friendly" place for Watch and Clock Collectors