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The Logan shaper was made in both early 7-inch and later 8-inch stroke versions; the latter machine was originally a Porter-Cable design which Logan improved and subsequently sold on, in the early 1950s, to Brodhead-Garrett, a school supply company. Brodhead-Garret fitted a more substantial vise, a more efficient lubrication system to the variable-speed pulley shaft (both useful improvements, according to users) and marketed it as their "J-Line" Model.
Of the two Logan shapers the 8-inch was produced in far greater numbers and had a maximum real stroke of 8.5" and six automatic table feeds, in either direction, from 0.002" to 0.012". The usual type of reversing ratchet was fitted to the drive and the motion could be reversed by just lifting the spring loaded knob and twisting it through half a turn.
The tool post could be rotated through 360 degrees (unlike the early 7-inch model) and the toolholder, as was almost universal on this type of shaper, angled on the end of the ram.
The stroke rate, which varied from 35 to 180 per minute (with cutting speeds of up to 120 feet per minute), could be set very easily by turning a large, circular handwheel on the cabinet front; the change was automatic, there being no need to stop the motor, shift a belt or operate a clutch.
The box table was 8" square and had a travel of 5.5" (easily moved by a convenient handle above the stroke-rate handwheel) and a cross traverse of 10.5".
Two motor sizes were offered, 0.5 H.P. and 0.75 H.P. for either single or three-phase operation.
For a smaller shaper the Logan was unusual in having a very substantial, double-arm bracing bracket to support the front of the box; most maker's were content to fit either a single bracing stud - or nothing at all.
The shaper occupied a space 15" wide, 35" deep and 51" high - and weighed approximately 700 lbs with motor and stand.
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