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Welcome! In today's video I'll be restoring a rusty old double key entry mortise lock set from the 1890s which was manufactured by Hopkins & Dickinson Manufacturing Company of Brooklyn/New York, NY. The antique cast iron lock itself was very rusty and the rest of the hardware had the usual coating of house paint on it which would need to be stripped.
To start off this restoration I disassembled the mortise lock, made easier since the faceplate was attached to the lock case with screws rather than rivets. Once disassembled it was time for paint stripping. One heavy coat of an aerosol paint stripper was enough to remove most of the paint and japanning. Next up everything was degreased and was thrown into the rust removal bucket of doom. After an overnight soak the rust was gone and it was time for abrasive buffing and wire wheeling.
Then it was mortise lock repair time. The lock itself was in pretty good shape, though there were a few springs that were broken. I have an assortment of flat spring steel which I sifted through to find the perfect springs for the job. I also have an assortment of flat spring temper steel which I could have cut to the correct size if needed. With the lock repair completed I went ahead and made two keys. The deadbolt key was simple, the latch bolt key not so much. Cutting keys is usually simple but this time I had to file a new one from scratch due to its unique design. After some time of filing away I ended up with two perfect keys.
Then I moved on to painting the cast iron lock case so it wouldn't rust. I followed this up by polishing and lacquering the deadbolt and latch bolt. Lastly I moved on to bluing the small parts to help keep them rust free. I mostly did parts that had areas that stuck out of the lock case such as the hubs so they'd be a bit less likely to rust in the future. The remaining parts were sprayed with a dry lubricant made for locks which should help keep them rust free for quite some time.
Next up in the hardware restoration was sanding, polishing and lacquering the knobs, backplate, strike, keyhole cover, twist and rosette. I sanded from about 400 to 1,000 grit on all these parts, polished them with a coarse polish to recreate the original level of polish, then gave them a bit more of a golden tinted coat than anticipated. It's a long story but trying to match the level of tint between all the parts can be a bit harder than you'd think haha. Overall I think of all my restorations this one turned out pretty nice considering what I started with.
Time Stamps:
0:00 Welcome!
1:10 Disassembly
2:48 Paint Stripping
3:35 Abrasive Buffing
4:19 Making Springs
5:27 Making Keys
8:23 Restoring Faceplate
9:37 Painting Lock Case
10:16 Restoring Bolts
10:57 Bluing
11:24 Reassembling Lock
13:32 Restoring Knobs
15:22 Backplate, Strike, Keyhole
17:26 Restoring Twist, Rosette
18:42 Before & After
19:39 A Quick Test
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Ornate 1890s Double Key Lockset Restoration | Random Restoration