Models with power table feed included the MF-G with belt guards and the MF without. The unit was covered by a large cast-iron housing that doubled as the carrier for the gear train and provided rates of feed between 0.186" and 11.25" per minute - a window on the face of the Pick-O-Matic cover showing the table feeds available whilst a large knurled knob, protruding from the left-hand face, selected the desired feed speed. Power feed to the table was also offered and worked through an ingenious 32-speed drive known as the "Change-O-Matic" - a device similar to the "Pick-O-Matic" carriage-feed assembly offered as an extra on 10-inch Atlas lathes for a short time just after WW2. If belt guards were not needed, the model MH was available. Models for production work included the belt-guarded MH-G with rack-and-pinion lever feeds to the longitudinal and vertical movements and screw to the lateral. In the first catalog (later ones were altered) the different types were listed follows: "MI" - a plain miller with all-screw feeds by hand and less belt safety guards and without a motor if guarding was required the MI-G could be ordered. The miller could be purchased in various forms (at varying prices) with or without an integral motor and countershaft unit and with a choice of screw or lever feeds to the table. With the cover gone (the basic model designation changing as it did so from "MFB" to "MFC") it was possible to mount a bracing bar between the knee and arbor end (at the same time the rear cover was altered). The first picture below shows the miller as introduced in 1941 in later years the tough but cosmetic and (unnecessary) cover above the overarm and spindle was dropped - it's original aim perhaps being to make the miller look more up-to-date than it was and hint at a dovetail located arbor support. However, during the late 1940s and early 1950s at least two third-party suppliers, the well-known Marvin Machine Products of Detroit, and an unknown maker, offered a neat (non-quill feed) vertical attachment and (from Marvin only) an effective slotting head.
As the only miller in the Atlas range, it's surprising that the maker failed to list a complimentary vertical machine and, even more astounding, did not see fit to offer either vertical or slotting heads - despite such items being commonly available for other makes. Marvin Slotting Attachment Unknown Vertical AttachmentĪ Handbook and Parts List is available for the Atlas/Craftsman MillerĪlso sold using the "Craftsman" brand name by Sears, the Atlas Horizontal Miller was a heavily built but compact machine - and one that demonstrated the typical attention to detail and care in design that marked the products of the American Atlas Press Company.
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