Table top ironers like the one pictured were really meant for doing small items like pillow slips,napkins, placemats and such. In addition perhaps little girl's jumpers, boys pants, men's shirts etc. Large flatwork while possible would have be folded many times to fit the width of the roller. Had a small Beatty ironer similar to the GE pictured, and quickly sold it on to another person. Just was too small.
Ironers work by moving the item along a heated plate, thus smoothing,drying, and "ironing" such as it is. Pressing can be done by simply stopping the roller and allowing it to remain in contact with one area for a period of seconds.
All ironing really does is rearrange the "memory" of a fabric by flatening it out. Moisture in the form of steam helps certian fabrics (mainly natural). Tension is caused by holding the item taught with one hand, while the other hand goes over the area with an iron.
Simple really.
Small ironers like the GE pictured were also a answer for those housewives whom did not have room for the behemoth Ironrites, Bendix,Simplex, and other types of full sized ironers.
One has to remember ironers were in their heyday up until around 1960 or so when "Permanent Press" fabrics came out. Until then laundry day produced tons of things which had to be ironed, and "Her Indoors" was always looking for ways to lighten her load on ironing day. Giving up on ironing bed and table linen was the common method, but no self respecting mother/housewife would send her husband out to work in a shirt that had not been ironed, or her children to school in the same manner. OHHHHHHHHH how people would talk, especially the woman's MIL.
Launderess