Caradco sliding glass door lock

A home owner from Spencer, Iowa says:
The sliding glass door is from 1974. The internal parts seem fine, but the latch on the inside of the house broke off. How do we get another? Image 1499 shows broken missing locking handle under door handle. Image 1501 shows another indoor angle and image 1502 shows from the outside. The screws are 4" apart.

We have been without a locking door for 3 months - Help! I'm so glad I found your site! What do we need and how do we get it? Thanks very much!
User submitted photos of their 1974 Caradco sliding door handle set
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Dave Sr. from SWISCO responded:
Thanks for posting! This looks to be an older handle, and I don't think it's made anymore. I know for certain that the missing thumb latch isn't replaceable. However, please take a look at our 82-035 Patio Door Handle Set. I think this is a more modern version of your existing handle. Do you think this could work as a substitute?
A home owner from Spencer, Iowa says:
Thanks for the reply Dave. Is this difficult to install? I would guess that the screw holes are in the same place. The information mentions that the thumb latch can be set in 3 different locations - what does that entail? Thanks for your help - this looks like the correct product!
Profile picture of Dave Sr.
Dave Sr. from SWISCO responded:
Our 82-035 is fairly easy to install; you just need to make sure that everything lines up as you screw it in.

The thumb latch can go in three different locations. You can see a better view of exactly where these positions are in the following picture.
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Let me know if you have any other questions.
A quick learner from Spencer, Iowa says:
The parts came! I used a phillips screw driver and had the problem solved in about 10 minutes! I could even use the wooden handle from the original lock, so it was EASY! Thanks so very muich for your help! I will always recommend your company to anyone needing parts for doors or windows!
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Tom from SWISCO responded:
That's great news! I'm glad everything worked out. Thank you for spreading out name, too! If you have any other questions, let us know. I would be more than happy to help out.
A home owner from MN says:
Need an external lock for a Caradco 6 ft sliding patio door. Was never installed at the beginning, unfortunately, which was about 10 yrs ago. Would appreciate a solution and any help. Thanks!
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Paul from SWISCO responded:
To get started, take a look at the 82-035 Patio Door Handle Set.

Also, be sure to look into the related parts on the right of the product page. These parts included mortise locks and pull handles.
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