"Fraim Contract Padlock Key Changes and Key Cutting"

The following key changes applies to the Dec. 15, 1908 Patent # 907026.

Flat Key Changes

The mechanism could support 4x4x4-3x2=122 key changes, however only 12 off the shelf key changes have been found on the numbered locks, and catalog advertisements state 12 key changes. For an additional charge Fraim would sell the other 110 key changes. Interestingly the depth cuts for key codes 61-66 were duplicated for 67-72 where the key rib made the key code unique. The ILCO E375 or ILCO T127 blanks work well for this lock.

We will update these pages as more information becomes available.

Analysis

  1. Lever #1 and the guard lever do not add to the number of key changes.
  2. Lever #1 locks lever #'s 2, 3, and 4, and the shackle heel.
  3. The guard lever locks lever #1.
  4. Lever #'s 2, 3, and 4 locks the shackle toe.
Key Codes 61-72
Key
Code
Key
Rib
Depth
Cuts
Same
Cuts As
Guide Lever #1 Lever #2 Lever #3 Lever #4 Guard
Lever
Width Height Width Height Width Height Width Height Width Height Width Height
61 Right 14313 67 .040 .315 .060 .445 .090 .295 .075 .345 .050 .445 .085 .345
62 Right 14333 68 .040 .315 .060 .445 .090 .295 .050 .345 .075 .345 .085 .345
63 Right 14133 69 .040 .315 .060 .445 .090 .295 .075 .445 .050 .345 .085 .345
64 Right 11433 70 .040 .315 .060 .445 .075 .445 .090 .295 .050 .345 .085 .345
65 Right 13143 71 .040 .315 .060 .445 .075 .345 .050 .445 .090 .295 .085 .345
66 Right 11343 72 .040 .315 .060 .445 .050 .445 .075 .345 .090 .295 .085 .345
67 Left 14313 61 .040 .315 .060 .445 .090 .295 .075 .345 .050 .445 .085 .345
68 Left 14333 62 .040 .315 .060 .445 .090 .295 .050 .345 .075 .345 .085 .345
69 Left 14133 63 .040 .315 .060 .445 .090 .295 .075 .445 .050 .345 .085 .345
70 Left 11433 64 .040 .315 .060 .445 .075 .445 .090 .295 .050 .345 .085 .345
71 Left 13143 65 .040 .315 .060 .445 .075 .345 .050 .445 .090 .295 .085 .345
72 Left 11343 66 .040 .315 .060 .445 .050 .445 .075 .345 .090 .295 .085 .345
Original keys measured.
Original keys measured electronically.
Keys cut and then measured.
Pending verification.
Lever depth cuts: 1=0, 2=.050, 3=.100, 4=.150
Guard lever depth cut: 3=.100
Lever thickness: .070

 

Sample Original Key #67

Sample Blank

 

Cutting The Flat Key

1) Smoke the key and locate the deep cut lever. This will also establish your key spacing.
2) What I like to do now is pick the lock so I may watch the levers as I make my depth and spacing cuts. This is not necessary but rather an aid in cutting the key.

 

Hollow Barrel Key Changes

Under Construction