I had a few of these proximity fuses from some shells my grandpa took from
@caractacusbrittania74424 жыл бұрын
The proximity fuse was a British invention.....handed over to the Americans in 1940.... Together with the cavity magnetron (which allowed portable airborne radar) Also the blueprints to sir frank whittles patented (1936) Jet engine.... Also included britains 15 year research into an atomic bomb. Delivered by Henry tizzard of the June 1940 tizzard mission to the usa.....and received by James phinney baxter the third Of the American office of strategic studies. Also included were blueprints for Other inventions and discoveries Rockets,gun sights,aiming apparatus,chemical warfare agents,etc etc... A trunk full of military secrets That advanced American technology 50 years in the space of a few months, And what the American baxter called.....the greatest treasure in the history of mankind that one nation bestowed on another. In return......with Britain currently perfecting the 4 engined long range Lancaster bomber.... Britain wanted Americas norden bombsight......... This request was.....refused.
@AtlasReburdened4 жыл бұрын
I wonder if there were really lots of people that sounded like that or if this guy just made a good living narrating these films all over the US.
@spaceranger37284 жыл бұрын
I think that was a style of radio speaking back in those days and it probably had a lot to do with the frequency response of the audio equipment in use back then.
@ultimateanthony18834 жыл бұрын
I've been thinking so too nice
@dingaling20074 жыл бұрын
I finally understood how different bombing became after ww1
@lorenzoboyd68894 жыл бұрын
In the ordinance usage, it is usually spelled 'fuze'.
@HailAnts4 жыл бұрын
_”3 score...”_ ? People still said ‘score’ in the 1940s?
@michaeljames49044 жыл бұрын
The days of our years threescore and ten... people still read the Bible back then.
@bingeltube4 жыл бұрын
Very recommendable
@stephenpollard37394 жыл бұрын
I remember well, a proximity fuse triggering a shell as it left the barrel on our destroyer, massive explosion 10 metres from the gun. I thought they were on our side?
@thejohn66144 жыл бұрын
Thanks for your service. When and where did you serve?
@bad71hd4 жыл бұрын
What is the average velocity of the schrapnel!?
@destrylett16194 жыл бұрын
How ever fast the Shockwave of the explosive is so for tnt like 6000 m/s
@nvg15264 жыл бұрын
Is the new fuse time delayed not to be set off by the barrel of the gun ....if that makes any sense ? Also when dropping a bunch of bombs at once ,how come the signal is not reflected off the neighboring bomb prematurely???
@moc55414 жыл бұрын
Some of the drawings here are a bit misleading. In the frame of reference of the moving munition the fragments spray out to the side. Correct. However the munitions are moving faster than the target (if it's an airplane) and of course the target could be utterly motionless. In the frame of reference of the target the fragments occupy a cone-shaped region with the tip of the cone being the point of explosion and the cone extending forward of that point. This is particularly true of artillery rounds; not so much for the slower bombs.
@theHentySkeptic4 жыл бұрын
What great post. thanks
@hoilst4 жыл бұрын
Completely ignores the fact that the Brits were working on these fuses first and came up with the idea - only when they order miniature valves off the Yanks did the Yanks suspect they were working on something like this and started making their own.
@martinkesler59994 жыл бұрын
My father Martin Kesler Sr. was a dye (color) chemist and also worked on the polaroid sun glass plastic color in the nose cone of the VT fuse, which had trouble in the sun light. He further worked on the first polaroid land camera and the sun glasses use of the same color.
@aaaatttt1014 жыл бұрын
Why is that US clips, such as these, create an image of an American invention, when in reality it had been proposed and in development in the UK long before?
@martinh12774 жыл бұрын
Die Geschichte ist süß! Der Transistor wurde erfunden 1947, er wurde nicht ab 1942 eingesetzt. Für das elektrische Feld brauchte man Röhren mit Heizspannung 6 V und Anodenspannung, 200 V. Dazu eine Batterie mit 150 Zellen und eine andere Batterie mit 4 Zellen. Auch die Senderöhre ist groß. Im Gehäuse ist kein Platz. Beim Abschuss wird aufgeheizt. Die Röhre ist arbeitsfähig nach mindestens 2 Minuten. Mittlerweile ist das Flugeug weggeflogen. Ich vermisse die Sendeantenne, nötig für das elektrische Feld. Natürlich wirken Kräfte von 20000 G und 5000 G (radial) auf Röhren und Batterien. ... und die Erde ist eine Scheibe.
@mikesmith-wk7vy4 жыл бұрын
this was such an amazing revolutionary fuse, yet in Vietnam when the mud season hit ,soldiers would complain shell damage would be absorbed from the soft ground impact. and my grandfather was in artillery in the late 40's 50's and said he never used the prox fuses just the timed ones. why did we stop using these fuses after ww2 they worked so well
@supremereader76144 жыл бұрын
Wow, that sure put a damper on his day, huh. 6:34
@jimf19644 жыл бұрын
I honestly had no idea. That was one hell of a thing to invent and make en masse during that era.
@palliaskamen57224 жыл бұрын
Is this what's also referred to as flak?
@ellayararwhyaych47114 жыл бұрын
It's a shame our world has to devote talented resources to build and use these things against each other. If not for this stuff and religion, we'd be to the stars by now.
@philliplopez87454 жыл бұрын
Love " jam handy " films .
@TheRobbex4 жыл бұрын
Invented in Great Britain and given free gratis tot he U.S.A. Great Britain finished paying for World War Two in 2006.
@twright38024 жыл бұрын
Being an old Marine Artillery Operations Chief ( 0848) I can say that shooting a VT fuse at a target works great...
@wadewells8085 жыл бұрын
Thanks for sharing this. I collect and restore old tools and Millers Falls brand tools are my favorite. I wish I could say why, but there is some sort of mysterious kindred spirit I have with the brand.
@Wmbhill5 жыл бұрын
Thank you for uploading this video. It reminds me of when I was a young machinist through the 90’s learning from men of this era.
@samhouston16735 жыл бұрын
If you come across any WWII Rosie the Riveters in action on the machine tooling, that would be much appreciated. My Step Mom was a Rosie working on the Consolidated B-24 Liberator at the Consolidated Plant at Carswell Army Airfield.
@samhouston16735 жыл бұрын
Out of all the documentary and educational films of that entire era, Jam Handy productions are my absolute favorites!
@samhouston16735 жыл бұрын
@05:20 I wonder if that ruler maker still has "Made in U.S.A." on their rulers.
@edwardcnnell28535 жыл бұрын
To consider the value of the proximity fuse for antiaircraft fire look at the sinking of the Bismark. The death knell was set when swordfish torpedo bombers damage the Bismark's rudder. The antiaircraft fire was ineffective because the timed fuses were preset with the firing order locked into how the reload ammunition was readied. The first were timed to explode at a certain distance which would be the initial firing. From there the shells would exploded progressively closer to the ship as the aircraft came closer. But the Swordfish was an old biplane model and slower than the German gunners expected to face. As a result many shells exploded harmlessly far in front of the Swordfish and the Bismark suffered loss of it's steering ability sealing it's fate. To get the miniature vacuum tubes for the fuses they looked to existing technology. Vacuum tubes for hearing aids. Hearing aids of that time were a box worn on the belt with a wire to an ear piece. This was the model for the tubes for the fuses. I believe such a fuse was also used on the first atomic bombs.
@samhouston16735 жыл бұрын
I want one. Now where to get and how much?
@bigbob16995 жыл бұрын
Cheap taps will come back and bite you .
@dennisobrien36185 жыл бұрын
Love the old Gerstner toolbox. Wonder what it looks like more than 75 years later.
@pascalcrepin-gilbert86105 жыл бұрын
Clearly this chanel is a dream for machinist.
@karambirnain94615 жыл бұрын
Military science tricks
@davidm41605 жыл бұрын
A three jaw would work for this.
@davidm41605 жыл бұрын
They don't make cutting oil like that anymore.
@UseitLoseit5 жыл бұрын
10:45 says something if you can grind a drill, without even looking at what you're doing!
@timmallard53605 жыл бұрын
I love these old videos and your naration is excellent. Facinatinating stuff!
@TronOfBorg5 жыл бұрын
Question for those that know more about this, would the fuse be defeated, prematurely detonated, by the enemy if they could broadcast a strong radio frequency that the fuse was expecting to 'hear'?
@GaryCameron5 жыл бұрын
Yes, which is why they were kept so secret and initially only used where dud shells would not likely be retrieved by the enemy for study. Only very late in the war were the used over enemy troops. It was a very primitive setup, a low power transmitter carried by an enemy aircraft of the correct frequency would render it ineffective. The secret fell into the hands of soviet spies and ironically a more advanced version was used in the rockets used to shoot down Gary Power's U2.
@BobSmith-dk8nw4 жыл бұрын
Yes. An example of something similar was the German Fritz X Radio Guided Bomb en.wikipedia.org/wiki/Fritz_X This weapon was used to sink one of the Italian Battleships surrendering to the Allies and then used against the ships off Anzio. However - the Allies gradually figured out which frequencies the Germans were using to guide them in - and then just jammed them - causing the missiles to tumble from the sky when they lost guidance. Another incident that may have had similar factors involved was the death of Joe Kennedy, JFK's older Brother. He was supposed to take off a B-24 packed with explosives - and bail out. The Aircraft would then be flown to and then into a target using radio control. About the time he and the flight engineer were supposed to turn on the radio controls (which could detonate the explosives too) the plane just blew up. They don't know why as the biggest piece of it found was one of the wheels but there is speculation that a radio broadcasting on the frequency used to detonate the explosives caused the premature detonation. There was never any speculation that the Germans had done this - but rather that it was just a stray signal. .
@chuckthebull5 жыл бұрын
Just looked them up on the map...lease sign out front..seems they lease out space now in that building, CNC machining killed that industry. Oh well Up and onward, but sad as well...thanks for the great video. Still square footage is relatively cheep.
@rupert53905 жыл бұрын
You are so generous giving your time for this really worthwhile project - I intend to come over to see this magnificent facility can I thank you on behalf of everyone for your generosity in keeping this history safe.
@LOGEZZZZZBRO5 жыл бұрын
Thanks for posting this! My grandfather passed away two years ago and I inherited a lot of his tools. In them were some Millers Falls steel number/letter punch sets from the 1940s. Noticed the label today and a Google search lead me here; awesome to see where they were likely made in video form.
@kreyzeer79575 жыл бұрын
Useful lesson from past! It's near...
@alecblunden86155 жыл бұрын
I understand all the theoretical work was completed in the UK and communicated to the US for industrial development by the Tizard Committee in 1940. Hardly just a few ideas. Rather typical, I fear.
@BobSmith-dk8nw4 жыл бұрын
Yes. Rather typical how the British automatically assume full credit for everything. en.wikipedia.org/wiki/Proximity_fuze .
@randymurray9345 жыл бұрын
I think after watching this video i may have a diploma in Tap & Die
@charlesedward46105 жыл бұрын
Nowadays they’re too busy teaching about transgender bathrooms and other ideological left wing indoctrination BS. No wonder the rest of the world is beating us in most industries while we die off from rampant opioid addiction.