The 1400 lb Model M was Denbigh's smallest miller with screw feed to both table movements and advertised as being "A low-cost machine for high production on small and medium work." It was a smaller version of the Model D and, like its bigger brother, the CVS, the Model M was fitted as standard with as variable-speed drive unit giving speeds (with a 2 hp, 1400 rpm motor) from 65 to 245 rpm in the 4 : 1 ratio backgear and 260 to 980 rpm in open drive. The backgear was well engineered - all the gears were cut from steel, the shaft ran on ball bearings and the whole assembly was enclosed within an oil bath.
Only one table size was offered of  30.5" x 67/8" - with a longitudinal travel of 16.5 inches and a cross feed of a (very inadequate) 3.75 inches. The table was fitted with a 3-speed power-feed gearbox as standard with feed rates of 0.0213, 0.0112 and 0.006 inches per revolution of the cutter.
The 3% nickel-chrome steel main spindle ran on taper-roller bearing and carried a No. 3 Morse taper nose, into which fitted a 1-inch diameter cutter-holding mandrel. The overarm was a 3-inch diameter steel bar.

Denbigh Model M showing the motor mounted on the right-hand side of the main column

The No. 2 Morse taper Vertical Head (Code JIFF) was a simple affair, capable of being swivelled but without a quill feed. The clearance from the centre line of the cutter to the column face was 6.75 inches and the maximum clearance below the spindle nose and the table 105/8 inches.

The optional Slotting Head (Code JEAF) had a maximum length of stroke of 2 inches with 7 inches of clearance from the centre of the 5/8" diameter cutter holder to the face of the column.

Denbigh Type C.V.S. Semi-Universal Miller
The C.V.S. (constantly-variable speed) variable-speed drive miller was based on the ubiquitous Model C and offered both speed control from a single lever and a table with power feed in both directions. Two models were manufactured, the Type 2 and Type 4 with table lengths of 34" x 10" and 46" x 10" and longitudinal feeds of 21.5" and 33.5" respectively. All models were fitted with tables able to be swivelled 45 degrees either side of their central position - hence the maker's  designation of the machine as "Semi-universal".
The variable-speed drive gave a range of spindle speeds from 30 to 700 rpm and included, like other Denbigh millers, a double backgear assembly. with back-gear set in its first position a range from 30 to 90 rpm was available; in its second position 90 to 260 rpm and in open drive 250 to 700 rpm.
The 3% nickel-chrome steel main spindle ran on taper roller bearings and carried a No. 4 Morse taper nose, into which fitted a 1-inch diameter cutter-holding mandrel. The overarm was a 4-inch diameter steel bar.