Model |
Size |
Body
Shape |
Spool
Pin |
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
Center 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.
|
|
Full |
Angular |
Shoulder
Center Arm - Raised
|
Face Plate |
Bed Screw - lever |
Law p122 |
R41
|
Full |
Rounded |
Shoulder
Center 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 1100
|
Full |
Rounded |
Shoulder
Center Arm - Raised
|
Face Plate |
Bed Screw |
(1100) Hand crank c1929.
|
Rotary 1120
|
Full |
Rounded |
Shoulder |
Face Plate |
? |
(1120) Electric portable. |
Rotary C
|
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. |
RBRW
|
Full |
Rounded |
Shoulder |
Face Plate - inside |
Pillar - lever |
"Rotary Bobbin Reversew
Wrinkle" finish
(or perhaps Ward instead of Wrinkle). Electric. Howard Barber's 1938/9
patented opening faceplate with hidden light design for Montgomery Ward
incorporated into this National model. Sold as Montgomery Ward. |
RBR-2W
|
Full |
Rounded |
Shoulder |
Face Plate - inside |
Pillar - lever |
(RBR-2W) Reversew, electric. |
N-50
|
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.
|