The Rangeland Avenger by Max Brand

When the window was half raised -- the work of a full ten minutes -- Sinclair drew his revolver and rested the barrel on the sill. He continued to lift the sash, but now he used his left hand alone, and thereby the noises became louder and more frequent. Cartwright occasionally raised his head, but probably he was becoming accustomed to the sounds.

Now the window was raised to its full height, and Sinclair prepared for the command which would jerk Cartwright's hands above his head and make him turn slowly to look into the mouth of the gun. Weight which he could have handled easily with a lurch, became tenfold heavier with the slowness of the lift; eventually both shoulders were in the room, and he was kneeling on the sill.