They are certainly much less effective than a regular Bissel
I have an Electro-Sweep that differs from the usual DAVIS. Mine does not have DAVIS molded into the Bakelite shell nor stamped on the maker plate.
It has a wood pole handle. The bale yoke is somewhat different, too, in that a short cylinder is welded to the top of the yoke to accept a smaller diameter pole.
Mine says, stamped on the motor mount plate:
Kiel Laboratory
Chicago Ill
110 volts AC only
Serial No. 1K780
Patents Pending
The toggle switch is mounted at the back of the base just like this eBay one above.
Of the 5 others I have seen every one has been a DAVIS Electro-Sweep, with a metal pole and the motor cord running inside the hollow pole up to the top. The yoke has two upright tabs that are riveted to the metal pole.
Their information (which is stamped on one of the dust bin lids) states:
Davis Mfg Co
Plano Ill
Cat. No. 1000
Other than these differences and that mine is a blackish-brown Bakelite (which is due for a waxing polish), they are all identical in construction and Streamline Teardrop design.
The shell is a one-piece Bakelite piece, with internal walls that form a base for the motor plate and a barrier to any dust being swept up & into the motor, which heat-vents through the slot openings in the top of the housing.
Yes, I had to replace my cord with lamp cord but will someday put on a cloth braided one.
