Antique Engines and Old Iron
[Home] - [HELP] - [Forums] - [Groups] - [Classified Ads] - [Subscribe] - [Books] - [Sponsors] -

Go Back   SmokStak > SmokStak® Antique Engine Community > Magnetos, Ignition Coils and Spark Plugs
Forgot Password? Join Us!

Notices

Magnetos, Ignition Coils and Spark Plugs Discussion about magnetos, buzz coils, spark plugs, ignitors and low tension coils.

Magnetos, Ignition Coils and Spark Plugs

S.B. Blasting Detonator


this thread has 21 replies and has been viewed 11398 times

Reply
 
Thread Tools Display Modes
  #1  
Old 12-02-2009, 11:36:57 PM
Dumpster Dumpster is offline
Registered
 
Join Date: Nov 2008
Location: Fleetwood, PA
Posts: 57
Thanks: 62
Thanked 64 Times in 14 Posts
Default S.B. Blasting Detonator

I have an old plunger type blasting detonator as we always saw on the cowboy movies in the 50's. If I place my fingers on the terminals and push the plunger down I think I would get a poke but I feel nothing and a volt meter only slightly moves. Is this similar to a Magnito on a Hit and Miss engine and the insides contain a magnet that must be recharged? There are two coils 2X4" and the circuit is complete. I was told it was made in Lancaster Pa.
Reply With Quote
Sponsored Links
  #2  
Old 12-03-2009, 12:31:50 AM
ehpower2's Avatar
ehpower2 ehpower2 is offline
Registered
 
Join Date: Mar 2008
Location: twin cities, minnesota
Posts: 1,673
Thanks: 66
Thanked 470 Times in 352 Posts
Default Re: S.B. Blasting Detonator

PICTURES PICTURES i have always wanted 2 see what was inside of one of those things
Reply With Quote
  #3  
Old 12-03-2009, 12:52:26 AM
John Newman Jr.'s Avatar
John Newman Jr. John Newman Jr. is online now
Subscriber
 
Join Date: Apr 2005
Location: Saint Louis, Missouri, USA
Posts: 5,298
Thanks: 752
Thanked 3,241 Times in 1,650 Posts
Default Re: S.B. Blasting Detonator

It is most likely not going to generate a high voltage. What kind of mechanism is inside - A gear rack (plunger) driving a pinion gear on the armature? My thought is that it would make low voltage at a fair amperage to heat a fine coil, like a light bulb filament, that sets off the detonator charge. Maybe see it it will light up a bulb from a flashlight???
__________________
John Newman, Jr.
Saint Louis, MO

I Can Probably Fix That
Reply With Quote
  #4  
Old 12-03-2009, 12:54:37 AM
ehpower2's Avatar
ehpower2 ehpower2 is offline
Registered
 
Join Date: Mar 2008
Location: twin cities, minnesota
Posts: 1,673
Thanks: 66
Thanked 470 Times in 352 Posts
Default Re: S.B. Blasting Detonator

well shouldnt it be high voltage because you need to carry the current a really far distance. I think you would need high amps current and voltage so when you have the wires out a 1000 ft you can still detonate the explosives
Reply With Quote
  #5  
Old 12-03-2009, 01:09:28 AM
Eric M.'s Avatar
Eric M. Eric M. is offline
Registered
 
Join Date: Jul 2006
Location: Southern CA, USA
Posts: 2,099
Thanks: 1,004
Thanked 1,083 Times in 474 Posts
Default Re: S.B. Blasting Detonator

My bet is it would be fairly low voltage. High voltages can suffer induction losses over long distances. This is a problem on large industrial engines with long spark plug wires.
Reply With Quote
  #6  
Old 12-03-2009, 01:15:45 AM
jht1057 jht1057 is offline
Registered
 
Join Date: Oct 2007
Location: Millerstown, PA
Posts: 670
Thanks: 1,320
Thanked 507 Times in 198 Posts
Default Re: S.B. Blasting Detonator

I agree, pictures, pictures, pictures, pleeeeeease.

Jim
Reply With Quote
  #7  
Old 12-03-2009, 03:08:27 AM
Eric M.'s Avatar
Eric M. Eric M. is offline
Registered
 
Join Date: Jul 2006
Location: Southern CA, USA
Posts: 2,099
Thanks: 1,004
Thanked 1,083 Times in 474 Posts
Default Re: S.B. Blasting Detonator

Aha! Here is the answer.

http://books.google.com/books?id=fuj...onator&f=false
Reply With Quote
The Following 2 Users Say Thank You to Eric M. For This Post:
  #8  
Old 12-03-2009, 08:46:07 AM
Tom Martin Tom Martin is offline
Registered
 
Join Date: Aug 2006
Location: Inman, South Carolina, USA
Posts: 1,312
Thanks: 115
Thanked 626 Times in 425 Posts
Default Re: S.B. Blasting Detonator

The blasting machine contains a magneto similar to a crank telephone magneto. The plunger has a rack which revolves the magneto, and at the bottom of the rack is a switch which closes at the bottom of the stroke to complete the circuit to the blasting caps. Closing the switch at the bottom of the stroke insures that only the peak voltage goes to the caps. There is a rachet arrangement so that the magneto is not rotated on the up stroke of the plunger. Common blasting caps are designed to fire at 1v/1 amp. Blasting machines are usually rated to fire a certain number of caps wired in series 25, 50, or 100 caps. There are detonators that are designed to only fire at much higher voltages, above 2kv where safety is the primary requirement. They are normally fired with a capacitor discharge firing system.
Reply With Quote
The Following 2 Users Say Thank You to Tom Martin For This Post:
  #9  
Old 12-03-2009, 06:17:46 PM
PTSideshow PTSideshow is offline
Registered
 
Join Date: May 2007
Location: Macomb County, Michigan
Posts: 833
Thanks: 35
Thanked 704 Times in 320 Posts
Default Re: S.B. Blasting Detonator

Here you go this is from my copy of the Dupont Blasters handbook.





Enjoy
Reply With Quote
The Following 3 Users Say Thank You to PTSideshow For This Post:
  #10  
Old 12-03-2009, 10:10:39 PM
Dumpster Dumpster is offline
Registered
 
Join Date: Nov 2008
Location: Fleetwood, PA
Posts: 57
Thanks: 62
Thanked 64 Times in 14 Posts
Default Re: S.B. Blasting Detonator

Here are the pictures that some have asked for. Thanks for all the input. This was my first post.
Attached Thumbnails
Click image for larger version

Name:	Blaster 004.jpg
Views:	573
Size:	54.5 KB
ID:	68443   Click image for larger version

Name:	Blaster 001.jpg
Views:	625
Size:	63.3 KB
ID:	68444   Click image for larger version

Name:	Blaster 002.jpg
Views:	605
Size:	65.5 KB
ID:	68445   Click image for larger version

Name:	Blaster 005.jpg
Views:	420
Size:	30.1 KB
ID:	68446  
Reply With Quote
The Following User Says Thank You to Dumpster For This Post:
  #11  
Old 12-05-2009, 02:00:14 PM
Dave Frost Dave Frost is offline
Registered
 
Join Date: Sep 2009
Location: Indiana
Posts: 341
Thanks: 253
Thanked 438 Times in 173 Posts
Default Re: S.B. Blasting Detonator

You need to find some ACME dynamite and have some fun....
Reply With Quote
  #12  
Old 02-25-2016, 11:08:06 PM
Duane643 Duane643 is offline
Registered
 
Join Date: Jul 2007
Location: Sandy Ridge, PA USA
Posts: 1
Thanks: 0
Thanked 0 Times in 0 Posts
Default Re: S.B. Blasting Detonator

thanks for the pics. i have one that
t the case is rotted clean off and the pics will sure help in the repair
Reply With Quote
  #13  
Old 02-26-2016, 01:20:08 PM
Big Bird Big Bird is offline
Subscriber
 
Join Date: Dec 2014
Location: Bradenton, Florida
Posts: 1,047
Thanks: 462
Thanked 1,095 Times in 495 Posts
Default Re: S.B. Blasting Detonator

I always liked those old Detonators for blasting... one of those and some old road flares would make For a cool display at a show.....
Reply With Quote
  #14  
Old 02-27-2016, 09:19:00 AM
51cub 51cub is offline
Subscriber
 
Join Date: Sep 2015
Location: Waterbury, Connecticut
Posts: 40
Thanks: 62
Thanked 18 Times in 11 Posts
Default Re: S.B. Blasting Detonator

I see the date on this, but it's the first I saw it. Does anybody know what became of this? I'm curious if it ever got cleaned up, or restored, maybe even gives the cat a little motivation
Reply With Quote
  #15  
Old 07-07-2018, 12:52:54 AM
M10a3 M10a3 is offline
Registered
 
Join Date: Jul 2018
Location: Warwick, New York, USA
Posts: 3
Thanks: 0
Thanked 1 Time in 1 Post
Default Re: S.B. Blasting Detonator

I have a blasting machine that I think is either a New York or Schneider Brothers number 2. The label plate is missing so it’s hard to tell. It works and is in good shape. Somebody repaired and refinished it. It is about 9 3/4 inches high and 4 1/4 across face and 61/2 deep.
Attached Thumbnails
Click image for larger version

Name:	6B788C44-7130-4F7E-8306-F2EDB7F82208.jpg
Views:	90
Size:	96.5 KB
ID:	313798   Click image for larger version

Name:	E05DB4E5-7E81-434C-8F9C-336895982013.jpg
Views:	123
Size:	222.9 KB
ID:	313799   Click image for larger version

Name:	727B5466-F1B3-4E6E-B750-6D4CD3F95EDA.jpg
Views:	75
Size:	199.5 KB
ID:	313800   Click image for larger version

Name:	3C5F4463-36F5-46F8-9AB2-817D75C6D32A.jpg
Views:	64
Size:	148.4 KB
ID:	313801  
Reply With Quote
  #16  
Old 07-07-2018, 01:49:50 AM
Power Power is offline
Registered
 
Join Date: Aug 2011
Location: New Jersey
Posts: 5,443
Thanks: 1,257
Thanked 3,311 Times in 1,938 Posts
Default Re: S.B. Blasting Detonator

Can't be very many amps because if you look at a spool of blasting wire, except for special insulation color, it looks like telephone cable wire- about 24 gauge.
Reply With Quote
  #17  
Old 07-07-2018, 10:03:08 AM
M10a3 M10a3 is offline
Registered
 
Join Date: Jul 2018
Location: Warwick, New York, USA
Posts: 3
Thanks: 0
Thanked 1 Time in 1 Post
Default Re: S.B. Blasting Detonator

A blasting cap requires about half of an amp to fire reliably. It’s the length of blasting wire and how many blasting caps you are firing that require higher voltage due to the resistance of said wire. I did a half assed push on the plunger with a fluke attached and I got just over 11 volts. I need to do a proper push to get an accurate reading. I just don’t want to break it the first month I have it.
Reply With Quote
The Following User Says Thank You to M10a3 For This Post:
  #18  
Old 07-07-2018, 10:26:47 AM
Power Power is offline
Registered
 
Join Date: Aug 2011
Location: New Jersey
Posts: 5,443
Thanks: 1,257
Thanked 3,311 Times in 1,938 Posts
Default Re: S.B. Blasting Detonator

I would consider opening it up, checking for bad / worn out internals, cleaning and lubing as needed. Then I would feel confident giving handle a proper push.
I have only seen one used once. The farmer gave it a really fast push. For a moment you could hear insides spinning fast, then the blast.
Reply With Quote
  #19  
Old 07-07-2018, 01:20:27 PM
Andrew Mackey Andrew Mackey is offline
Moderator
 
Join Date: Nov 2004
Location: Rockaway, New Jersey USA
Posts: 14,149
Thanks: 1,992
Thanked 6,767 Times in 4,301 Posts
Default Re: S.B. Blasting Detonator

Your typical old time telephone crank 'generator' puts out about 45 volts AC at about 1/2 an amp. it will light a few flash light bulbs but no more. I rigged one up to a small steam engine once, and it would light 4 6 volt bulbs pretty brightly, at a good rate of speed.

I suppose, it you spun it fast enough, it would fire a model hit and miss engine. Not sure if it has enough OOOMPH to fire a full size engine though. if you re-wound the armature with heavier wire, it certainly would indeed work.
Reply With Quote
The Following User Says Thank You to Andrew Mackey For This Post:
  #20  
Old 07-08-2018, 07:00:22 PM
M10a3 M10a3 is offline
Registered
 
Join Date: Jul 2018
Location: Warwick, New York, USA
Posts: 3
Thanks: 0
Thanked 1 Time in 1 Post
Default Re: S.B. Blasting Detonator

I measured in DC, I would if I should see if it runs in AC, I could have measured the wrong volts. Interesting. I am in the business of blowing things up, so I will be hooking this up to one blasting cap just for old time sake. I’m away now, when I get back home I will do some extra testing with the fluke meter
Reply With Quote
Reply

Bookmarks


Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

F o r u m Jump

Similar Threads Chosen at Random
Thread Thread Starter F o r u m Replies Last Post
Soda blasting ? Michael E. McCracken Hit & Miss Gas Engine Discussion 26 12-29-2006 01:32:02 AM
blasting or electrolysis Mike F Hit & Miss Gas Engine Discussion 9 03-16-2006 05:15:22 AM
SAND BLASTING DAVID BABCOCK Paint Shop 1 01-04-2004 10:09:28 PM
Abrasive blasting M.Smith Antique Engine Archives 6 12-25-2003 11:37:48 PM
Sand Blasting Dave Valentine Antique Engine Archives 18 02-05-2002 11:38:16 PM


Use "Ctrl" mouse wheel to change screen size.
All times are GMT -4. The time now is 11:29:30 AM.

Smokstak and Enginads site search!


All use is subject to our TERMS OF SERVICE
SMOKSTAK® is a Registered Trade Mark - A Community of Antique Engine Enthusiasts
Copyright © 2000 - 2019 by Harry Matthews P.O. Box 5612 - Sarasota, FL 34277