National Rotary Machines

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Rotary Shuttle Machines

– One bobbin cover plate to the left of the machine. Serial number at base of upright pillar or on the underside of machine

Click on thumbnail images to see larger pictures

Model Size Body Shape Inspection Plate(s) Upper Tension Stitch Length Control Notes
Rotary A1
Full Rounded Shoulder Front Bed Screw (Eldredge Rotary) 1904-08 Early bobbin & case. The hook cover has curved edges, whereas all later machines had rectangular hook cover plates.
Rotary A2
Full Rounded Shoulder - Centre Arm Raised Face Plate Bed Screw Lever

(Pritzlaff) Not Reversew (National's name for reverse sewing ability), non-electric. Rotary machines manufactured after January 1st, 1916 use certain slightly different parts eg tension and face plate.

Rotary A2 (no picture) Full Angular Shoulder - Centre Arm Raised Face Plate Bed Screw Lever Law p.22
R41
Full Rounded Shoulder - Centre Arm Raised Face Plate Bed Screw Lever (R41) Modernized Rotary A c1948: Reversew, separate

reversing knob on bed. Non-electric.

Rotary B
Full Rounded Shoulder Face Plate Bed Screw Lever Internal motor patented Oct. 5, 1920 by Charles H'Doubler, later

modifications. Electric, not Reversew.

Rotary 110
Full Rounded Shoulder - Centre Arm Raised Face Plate Bed Screw (1100) Hand crank c1929.
Rotary 1120
Full Rounded Shoulder Face Plate  ? (1120) Electric portable.
Improved Eldredge IEB
Full Rounded Shoulder Face Plate Pillar Lever Electric model, motor not built in, Reversew, krinkled finish. Light patented in 1935. Bed 14 5/8" long x 6 13/16"
R40
Full Rounded Shoulder Face Plate Pillar Lever (R40) Electric, Reversew (no knob on bed of machine). c1949
Machine#32-16055(model name or number unknown. 32?)
Full Rounded Shoulder Face Plate Bed Screw Lever (Princess) Features of R40 (electric Reversew without the reverse knob) and R41 (non-electric Reversew with the reverse knob, but without the central spool pin towards the center of the arm). Sub model version of the R41 with the Rotary B body. Separate reversing lever knob on bed.
RBR-2W
Full Rounded Shoulder Face Plate - Inside Pillar Lever (RBR-2W) Reversew, electric.
N50
¾ Sized Angular Rear Face Plate Bed Screw - Front Made by Portman, not National, and sold under various names. See Portman album in NeedleBar's Picture Library.
Rotary 'D'
¾ Sized Rounded Shoulder Face Plate Bed Screw 1935. Aluminum body, motor to front. Charles H'Doubler's thread control mechanism in the machine head. Sold as General Electric.
Two Spool
Full Rounded Shoulder Face Plate Bed Screw (Eldredge Two Spool) Uses small spool of thread in a canister instead of a bobbin in a case. Later machines were electric using same electrical parts as Rotary C.

1914/1916 onwards. Serial numbers begin with H, after inventor Richard Hohmann.