LE-ALCO Storm Window

A quick learner from atlanta says:
House built 1960. These are LE-ALCO Storm Windows. Whoever put them in, set them in a bed of caulking to make them air tight, so they are....in there. Can't get 'em out. I took out the screws on the frame but the storm window won't come out.

There are 2 screws on the SIDE of the storm window. Can't really get a screwdriver in there because it only leaves about 1" before you hit a the brick. Even a right angle screw driver won't help because it hits the bricks. I need to work on the upper sash of the window, so I need to get the upper sash of the storm window off.

If I went through the trouble of taking that screw out with a pair of pliers or something, would the upper sash come out? There are 2 screws at the top on both sides too but i think that's just to keep the frame together, not the storm window in.
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Dave Sr. from SWISCO responded:

Hello there! In the past, what I have done to remove a storm window main frame was to use a stiff putty knife or chisel. I use that tool to get between the storm frame and window frame where the bead of caulk is. Then I'd use a hammer and give the chisel a quick tap to release the "grip" of the caulk from the storm window frame. I believe this would be the best way to remove the storm frame. If you need a putty knife or chisel tool, see our 75-026, 72-021, or 75-081

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