JAN 5 Acc. 575, Box 12, #779, Ford Archives T-701 flywheel. Experimental design with teeth cast or cut in wheel, was discontinued as unsatisfactory.
JAN 7 Acc. 575, Box 12, #779, Ford Archives T-8779 priming knob changed from cold-rolled Bessemer to an aluminum die casting.
JAN 12 Acc. 575, Box 12, #780, Ford Archives Pressed-steel running board brackets, T-336B.
JAN 22 Acc. 575, Box 12, #781, Ford Archives Lower radiator support thimble, T-1114, drawn from “starfish” rather than solid blank.
JAN 24 Acc. 575, Box 12, #782, Ford Archives Ten-tooth pinion to be used with T-12B ring gear. T-12 48-tooth ring gear obsoleted. Old T-16, 12-tooth pinion, obsoleted.
FEB 14 Acc. 575, Box 12, #785, Ford Archives T-418C piston machined for lighter weight, using the same piston blank.
MAR 10 Acc. 235, Box 38, #697, Ford Archives “We enclose herewith sheet #3 of our paint specifications for Coupe and Sedan bodies. This sheet gives you the information covering those portions of the paint operations performed at the branches.
“We call your attention in particular to Operation #16, wherein it is noted that all inside moldings, window jambs, windshield frames and door jambs be given one coat of Black Satin Finish F-192.”
APR 6 Acc. 575, Box 12, #792, Ford Archives Transmission cover: Bendix cover holes moved back to position prior to change of December 17, 1919. Machining changes in the cover made.
APR 10 Acc. 575, Box 12, #793, Ford Archives Bendix cover given slots instead of 17/64″ holes to facilitate installation.
APR 23 Acc. 575, Box 12, #795, Ford Archives Pressed-steel muffler, experimental design, 500 per day. P/N T-1200C.
MAY 1 Ford Archives “Start large fans and pulleys for truck motors.”
MAY 11 Ford Archives Engine #4,000,000 built at 10:15 P.M.
MAY 11 Acc. 575, Box 12, #797, Ford Archives Three types of commutators used. T-4481-A1, brass; T-4481-A2, aluminum die casting; T-4481-A3, pressed steel.
MAY 13 Ford Archives Began using 24 disks in transmission.
MAY 20 Ford Archives Began using 25 disks in transmission.
MAY 20 Acc. 575, Box 12, #798, Ford Archives More experimental commutators. T-4481-A3, -A4; T-4446-B1, -B2.
MAY 20 Acc. 575, Box 14, #826, Ford Archives Timer roller assembly made of bronze (T-672-A1). Roller is of steel.
Aluminum also used (T-672-A2).
JUN 14 Acc. 575, Box 13, #801, Ford Archives 1921 Touring bodies shown in letter this date.
JUN 18 Acc. 235, Box 38, Ford Archives Commutator head T-4446B1 (pressed steel), T-4446B2 (die casting) and T-4483A4 (die casting) listed. Apparently there were at least three types being used.
JUN 20 Acc. 235, Box 38, Ford Archives “Please discontinue furnishing T-6881, Top Dust Hood for Touring Car, T-6939 Top Dust Hood for Torpedo, and T-1923 Tool Box, as regular equipment on new cars as soon as your available stock is exhausted.
“Top hoods may be carried as extra parts in your service stock and supplied at regular catalog priced hereafter.”
JUN 22 Acc. 575, Box 13, #802, Ford Archives Parts listed for new Touring body of June 14 letter. Now listed for production. (Touring body only.)
JUN 26 Acc. 575, Box 14, #815, Ford Archives Thickness of metal in front cross-member increased. Required the moving of several mounting holes in the frame.
JUN 30 Acc. 575, Box 13, #804, Ford Archives 16″ steering wheel OK’d for production. (Removed from “experimental.”)
JUL Acc. 575, Box 13, #808, Ford Archives New license plate brackets, T-491, at front.
JUL 17 Acc. 235, Box 38, Ford Archives “Supplementing our General Letter No. 793 under date of June 18th, wherein we mention the fact that Sedan side curtains T-10300A1, A2, A3 and T-10300B are to be held for repairs only. This means that side curtains will not be included in the standard sedan equipment in the future.” (These are the side window curtains.)
JUL 20 Acc. 575, Box 13, #807, Ford Archives Hood and hood handle redesigned to eliminate rivets at the handle, for production.
JUL 26 Acc. 575, Box 13, #807, Ford Archives 1921 Runabout and Touring bodies and parts specified.
AUG 13 Acc. 575, Box 13, #810, Ford Archives Pressed-steel muffler ends to be made of two pieces of scrap fender stock instead of one, for use on the 1921 models.
SEP 7 Acc. 575, Box 14, #813, Ford Archives Forged brake rods, T-891B, T-1513B obsoleted and replaced with T-804 for 1921 production.
SEP 13 Acc. 575, Box 14, #814, Ford Archives Front motor mount T-320B (experimental) indicated. Minor modifications made in construction and dimensions of T-191C driveshaft bearing housing, also experimental.
SEP 20 Acc. 575, Box 14, #814, 815, Ford Archives Coupe bodies began to use the elliptical gas tank as the supply permitted. Specified Coupe bodies with leather lining. Coupe bodies with cloth trim use the square tank.
OCT 11 Acc. 575, Box 14, #819, Ford Archives T-1201E, T-1202D, T-1200C muffler assembly adopted as standard for 1921 cars.
OCT 12 Acc. 575, Box 14, #819, Ford Archives T-1903 pliers for tool kit had handle shaped for use as a screwdriver, eliminating the need for a separate screwdriver in the tool kit supplied with the cars.
T-1303B (oval) gas tank specified for all chassis except for the Coupe and Sedan.
T-690C timing gear cover modified to allow more clearance for the bottom generator mounting bolt.
OCT 18 Acc. 575, Box 14, #819, Ford Archives Pressed-steel commutator case adopted as standard, eliminating the cast-iron, aluminum and bronze types they had experimented with. Apparently experiments continued on the cast case (noted in a letter #835, April 19, 1921).
OCT 22 Acc. 575, Box 14, #820, Ford Archives New front and rear spring hanger adopted. (This is the forged “L” shaped, one-piece per half, type.)
DEC 30 Acc. 575, Box 14, #831, Ford Archives Green-visor headlamp lens adopted, P/N T-6576B. These were discontinued by June of 1921 (replaced with “H” lens).
© Bruce W. McCalley. Rev. March 26, 2011