The Next Phase of Bumping - 'Spring-Bumping'

[Jimmie]

nothing new under the sun !!!

look at the patents : US001639919 and US001667223

it was in ........ 1928 !!! LOL !!

[jimb]

nothing new under the sun !!!

look at the patents : US001639919 and US001667223

it was in ........ 1928 !!! LOL !!

Wow the first one is a bumping device!

BTW: Only use only the last 7 numbers only when searching for these patents.

Here's the direct links to the images:
http://patimg1.uspto.gov/.piw?Docid=01639919&homeurl=http%3A%2F%2Fpatft.uspto.gov%2Fnetacgi%2Fnph-Parser%3FSect1%3DPTO1%2526Sect2%3DHITOFF%2526d%3DPALL%2526p%3D1%2526u%3D%25252Fnetahtml%25252FPTO%25252Fsrchnum.htm%2526r%3D1%2526f%3DG%2526l%3D50%2526s1%3D1639919.PN.%2526OS%3DPN%2F1639919%2526RS%3DPN%2F1639919&PageNum=&Rtype=&SectionNum=&idkey=NONE&Input=View+first+page

http://patimg1.uspto.gov/.piw?Docid=01667223&homeurl=http%3A%2F%2Fpatft.uspto.gov%2Fnetacgi%2Fnph-Parser%3FSect1%3DPTO1%2526Sect2%3DHITOFF%2526d%3DPALL%2526p%3D1%2526u%3D%25252Fnetahtml%25252FPTO%25252Fsrchnum.htm%2526r%3D1%2526f%3DG%2526l%3D50%2526s1%3D1667223.PN.%2526OS%3DPN%2F1667223%2526RS%3DPN%2F1667223&PageNum=&Rtype=&SectionNum=&idkey=NONE&Input=View+first+page

[jimb]

BTW: Only use only the last 7 numbers only when searching for these patents.

I wonder if I could have got at least one more only in there

[jimb]

In fact the first one appears to be the 'Spring-Bumping' method, slightly modified.

[fonzie123]

I don't see the point, honestly. With a small bit cut off the shoulder, the spring pressure on the pins will kick the key back automatically. If that's not happening for you already, you've got too much off the shoulder.

I never have to "reset" my bump keys unless they're old and beat and the shoulder is banged away to much.

db

i know chris from ukbk the keys do work they work on yale /era /most euro /and a lot more as his motto goes if it fits bumpit the keys do five and six pins because there is no shoulder

[ukbumpkeys]

The point is, it's another technique in the repetoire that allows you to open locks. I use a spring when sometimes necessary and it works. We could argue about shoulder lengths all day. Personally - and that's what it's about - I like them right off, and I make them that way. If someone wants the shoulder left on, they're more than welcome as that's less work for the cutter.
Anyway, also of interest is this little pic from 1937. Enjoy

[JackNco]

interesting, so i nicked the idea? whats the tittle of the book?

[xnoobandrew]

I think its a waste of a bump key...and I'm pretty sure you can break a lock like that

[JackNco]

Bumping really isn't good for locks anyway...

[sparkster]

Bumping really isn't good for locks anyway...

neither is shoving a 4mm drill bit down it either ,, sorry jack i just couldn't help myself

[JackNco]

Bumping really isn't good for locks anyway...

neither is shoving a 4mm drill bit down it either ,, sorry jack i just couldn't help myself

Well no... so do we have some kind of private joke i don't know about going on here? or...... well no uve lost me.

Welcome to the mad house either way

[sparkster]

sorry m8, i just happened to see a video of some guy drilling out a lock 5 mins prior to reading your post,, was sommat i thought was funny, but then agn, my sense of humour can be dry

[Mutzy]

Those of you who say pickguns are crap / bad for the lock:

Have you personally tried the pickguns? Has pin-chipping happened to you personally? And what manufacturer pickgun did you have? Could you get the locks open? What technique were you using?

The most valuable instrument in my pickset is my Majestic 'Life Lockaid' pickgun (Read: Good Quality Pickgun). It is 95% the first and only tool (other than tension tool) I pull out on lockouts.
When you have a housing commission tenant breathing down your neck, cause they've got medication to get from inside, and they've been standing outside their unit for the last 2-and-a-half hours cause you've been doing 5 other jobs, you're not going to do single pin picking to open it.
A very high percentage of lockouts I do take 5-10 minutes max, because when you know how to use a pickgun efficiently, you will get the door open very quickly.

And the lock works perfectly fine every time after I use a pickgun on it.

.02c from a satisfied locksmith.

[raimundo]

best lock co keys are tip indexed, if you bump one of these too hard or too often, you will drive the index plate back and cause the key to index tricky, (pull back to turn cylinder) similiarily, the multilock bump key will show spalling on the tip of the bump key from hitting the hard index plate at the back of the lock, so the spring is one good answer, however it would also make a mark on the front of the plug or cylinder if you dont put a fenderwasher with a rubber foot on one side of it on the bumpkey after the spring, in fact the whole rubber and fender washer and spring could all be stuck together with hot glue into a single unit I would guess. I believe that for best or multilock or any tip indexed bumpkey this is a real good idea.

[fizzmahon]

there has to be so much stress on the pins from a bumpkey. When i tried it a while back i rounded they keyhole quite quickly. That was in a masterlock padlock.