Jim Haubert Engineering

Bushing Machine

This page offers views of a machine I designed and built in the 1970s for the purpose of repairing worn holes in clocks and similar instruments

About Me
Creativity vs. Intellect
My Location
Contact Me/Links
Pages Related to Motorcycles
XLCR Project Introduction
XLCR Fuel Tank Repair
XLCR Tank Badge Repair
XR750 Swing Arms
Competition Network Articles
Softail Project Introduction

Pages Related to Horology
Prototype Precision Clock
Next Generation Precisiion Clock
Beveled & Etched Pendulim Bob
Music Box Repair
Bushing Machine
Depthing Tool

Other Projects
UHV Welding
Plexiglas Chamber
Tungsten Filament

Learning clock repair in the mid 1970s, I started by using my instructor's tools. The bushing machine he had was a Swiss made tool with serious (to me) limitations for clock work. It was so light in weight (and with a small base) that you needed two hands to keep it in one place on the bench while using it. It also often was not deep enough to reach to the center of a large clock plate.

I felt there had to be a better way so I came up with this design shown along with the accessories I also made:

In 2012 I cleaned it up considerably to enter it in the Craft Competition of the NAWCC. Below are two photos I used to show design features. The slotted bar that holds the clamps can accurately swivel around the center anvil increasing the tool's versatility. It is shown with a plate from a large hall clock shown next to a regular American 8 Day movement for comparison:

The commercial machine I mentioned did not allow the clamps to swivel or overlap at the center. Here I show how my machine overcomes this shortcoming and is being used to open the hole in a suspension spring. All of the cutters as the one below are ground from HSS drill blanks so they will likely last a few lifetimes:


Finally, the results of the National competition:

All material on these pages is copyrighted by Jim Haubert 2002 - 2018
310 1/2 W. Second Street,  Winslow, AZ,  US,  86047 
520-431-6533 (voicemail/text only)
Now Located on "The Mother Road", Historic Route 66