hope'w window operator

A quick learner from fort lauderdale, fl says:

April 22, 2012

I have a home built in the late 1930s with Hope's window operators on steel casement windows. Several are not working and disassembly indicates the arm gear is worn down to to lack of lubrication and window sticking. Is it possible to replace the arms? Is it possible to buy replacement operators? I have looked through your website and do not see a similar operator. Note the mounting screws are in a vertical plane. I will attatch photo of my operator for your review. Thanks in advancel.
scottt

A customer submitted photo of their window operator.

Dave Sr. from SWISCO responded:

April 24, 2012

Thanks for posting! These look like a screw-down type operator. Please take a look at our 39-020 & 39-021. Could these work for you? You may want to use these with our 39-504 or 39-512 steel window tracks.

A quick learner from fort lauderdale, fl says:

April 24, 2012

Close in design but wont work. Note distance between mounting holes is 3.5" on your 39-020 part. The distance on the original Hopes part I have is 2 3/8". Since the mounting base is integral with the window frame, that can not be modified. I have found one of mine replaced with a Hopes operator with the number 5896 cast into the bottom. Please look again and see if something might be available to replace these. Thanks in advance.
Scott Main

Dave Sr. from SWISCO responded:

April 27, 2012

Unfortunately, we have no other operators that may work for you. Are you sure you can't drill new holes?

A handy person from Connecticut says:

September 25, 2013

Hello,
I have several casement window crank operators that are stripped. The handles are fine. The stripped part is the distal (fine) end of the 2-inch screw gear. It's worn down so much that it won't catch the teeth of the arm gear. Is there any know replacement for this 2-inch screw gear? I don't mind taking the things apart. In fact I'd rather do that than replace the operators with new ones. Any thoughts?.