Author Topic: Tapering the thickness of a Main Spring the Easy Way - Bob Roller  (Read 4135 times)

Offline jerrywh

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Re: Tapering the thickness of a Main Spring the Easy Way - Bob Roller
« Reply #25 on: August 01, 2018, 01:22:27 AM »
 When I was young I made at hundreds springs. I used to make them for gunsmiths in Portland who mostly worked on shotguns. At that time I forged them in a coal forge and filed them to shape. I think I could make a main spring in about an hour including the time it took for hardening and tempering. When I make one now I still do it the same way but use a torch. The standing is what gets to me because of my back. The filing is easy with good sharp files. I have a small mill. But by the time I set up for that I can file a couple of springs by hand. In Bob's case he is already set up so it 's no problem. He has probably made a lot more than I have. If one has the jigs and all it looks like a good method and it is repeatable. A main spring then sold for about $15.00. I had two kids and could buy a weeks groceries for about $25.00 and that was including T bone steaks. A large hamburger, fries and a chocolate shake was 50 cents. 1960.
Nobody is always correct, Not even me.

Offline David R. Pennington

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Re: Tapering the thickness of a Main Spring the Easy Way - Bob Roller
« Reply #26 on: August 01, 2018, 02:06:37 PM »
Bob, anyone who has handled one of your locks could never argue with your methods. My only machine tool is a little Sherline mini lathe. I do have a forge and can get to rough shape pretty quickly on a spring. I am also a hobbyist in this field and am interested in learning historical methods. I was fascinated to watch our Willamsburg gunsmith forge blanks for a frizzen, cock and lockplate out of wrought iron this past weekend at Dixon’s.
VITA BREVIS- ARS LONGA

Offline Bob Roller

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Re: Tapering the thickness of a Main Spring the Easy Way - Bob Roller
« Reply #27 on: August 01, 2018, 04:25:12 PM »
Bob, anyone who has handled one of your locks could never argue with your methods. My only machine tool is a little Sherline mini lathe. I do have a forge and can get to rough shape pretty quickly on a spring. I am also a hobbyist in this field and am interested in learning historical methods. I was fascinated to watch our Willamsburg gunsmith forge blanks for a frizzen, cock and lockplate out of wrought iron this past weekend at Dixon’s.

In my late teens I played a bit with the ancient methods but didn't have the
right equipment and the labor intensive nature of it turned me off.Over the
years,as skills were gathered I was able to get more done with less work and
I did more than parts for muzzle loaders.Other shops were interested in what
my skills and WILLINGNESS to work longer than normal 8 hour days if need be.
One thing I offered from my own shop was the idea of ONE of a kind parts to
old car restorers.I was and still am able and willing to make only ONE part if
I have material and my tools will accommodate.I specialized in bronze bearings
for obsolete automatic transmissions and Packard Ultramatic was a focus for
me.MAJOR Classics like the Duesenberg was another and I still have the form
tools for some of the engine nuts and bolts.Custom wotk for megabuck owners
is a good position to be in and when they find out they are not getting robbed
by an opportunistic machinist/mechanic they can be the best of friends.
  Bill Large was a huge help and a fine teacher and an old gunsmith here in
Huntington showed me a lot about spring making and he did use old methods.
His heat source was a big,homemade gasoline blow torch he had to pump up
with a tire pump.He made this thing himself and it roared like a jet engine when working.
He hand filed his springs and hardened and tempered them with that big torch
and later I gave him some of the 1075 I use and he thought that was a miracle material.
 I have the utmost respect for you guys and girls that revive as much as possible the old ways
and I still use a number of files in my lock and trigger work but whenever I can the lathe
and the mill will be my first choice along with the bandsaws and other motor driven machines.
Bob Roller

Offline David R. Pennington

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Re: Tapering the thickness of a Main Spring the Easy Way - Bob Roller
« Reply #28 on: August 04, 2018, 02:23:07 AM »
Here is my low tech fixture for tapering spring. Not too much time involved so far. I get very little uninterupted shop time so it is hard to really estimate time involved. Maybe took ten minutes to forge. Five minutes to fix up the board to hold the spring (cut in the edge of my forging pattern) and twenty minutes with a  big coarse flat bastard and then a fine mill file to taper. Five minutes or so to cut the pin.











VITA BREVIS- ARS LONGA

Offline Bob Roller

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Re: Tapering the thickness of a Main Spring the Easy Way - Bob Roller
« Reply #29 on: August 04, 2018, 04:10:10 AM »
David R,
Looks like you're moving right along with it.I am certainly aware of the satisfaction
gotten from such endeavours and am glad to see them being kept alive.
Please keep up with the posting as this progresses.

Bob Roller