Source for crescent type circlip

[Trev]

Hi Folks,

I'd be grateful if someone would be able let me know where I could order some crescent type circlips (preferably a UK supplier) the same as the one in the attached image (although not broken).  It is the retaining clip for

the cylinder out of a chain door lock - I believe the locks were sold by Sears (patent no. 3161035).

Best Regards

Trev

Edited July 16, 2021 by Trev
Added location information.

[Trev]

Hi Folks,

If anyone else comes across one of these locks and needs to cut a key, I used the JMA blank RO-36D which isn't the correct blank but did work OK in this particular lock (it was the closest I had).

Best Regards

Trev

[Trev]

Hi Folks,

I've had a read of the patent and it seems that if I had pushed the crescent clip in  towards the cylinder, that would have compressed the two springs behind the clip and the cylinder could have been removed without damaging the clip.

I thought I would post this information so that if someone else comes across one of these locks they won't make the same mistake I made and pull the crescent clip out,causing damaging to it.

Best Regards

Trev

[grahamparker]

These door chains are not very good and not worth messing about with to be honest.

Cheap as chips for a new one in the uk.

https://www.hiatt-hardware.com/locking-door-chain-chrome-plated-with-keys?utm_source=google&utm_medium=paid&utm_campaign=googleshopping&gclid=Cj0KCQjw_8mHBhClARIsABfFgpgmtTn7G0xk3jGvXJb42HC22dND3ErGLbMSGot6T5H4A-pUB26HqwUaAufLEALw_wcB

[Trev]

Hi,

Thanks for the information, but as I hate throwing things away, especially when it is such an easy fix,  I made a new circlip out of a suitable washer - I did most of the shaping on a bench grinder, so there wasn't much filing required to finish it off.

All fixed now.

Best Regards

Trev

[Trev]

Hi,

I don't know if you usually post such things on here, but I thought I'd do so as it may be useful to others, these are the settings I used that worked with the lock I have and I've done it in the same format as used in my Framon 2 Book (assuming the formatting doesn't go awry):

 

Mfgr: Seares Craftsman

Series: Chain-Door-Lock

Blanks: RO36D                                                     Depths

Cuts Start at: .133                                               1-.252

Spacing: .094                                                     2-.232

Block #: 3                                                        3-.213

Incr: .0196                                                       4-.193

No of Spaces: 5

Spaces: .133, .227, .321, .415, .509.

 

Best Regards

Trev