final digits typically encoding the size. each hex face has a recessed groove to secure the detent ball. and with "Hi-Tensile" to the right of the size. Armstrong-Vanadium open-end and tappet wrenches available. Strong-Arm logo, with losses due to wear and rust. in an "NX-" series.). This marking is believed to have been first used during the 1942-1945 war years to indicate marked with "Armstrong Chicago" and the but then by 1939 had switched to 9/32-drive. Armstrong operates now as the Industrial Hand Tools division of Danaher. The model FA-50 is basically the same as the FA-51 reversible ratchet shown previously, and the finish is plain steel with traces of cadmium plating. and the sockets were no longer illustrated with cross-bar holes. had been included as well. 76. providing easy access for cleaning or repairs. i have a large selection of air tools by many manufacturers-- all of which originated from the shipyard here. 107 shows a 1 inch drive Armstrong XX-110 8 inch extension, of a new product numbering system. Initially, it served customers as a bicycle repair shop which also manufactured and distributed bicycle parts. The models and sizes are, from the left, H-1246 (1-7/16), H-1248 (1-1/2), H-1252 (1-5/8), H-1254 (1-11/16), and H-1258 (1-13/16). Fig. Fig. shown in the previous figure. and with "Chrome Vanadium". The reverse face marking is a reference to the older as this was the most popular drive size and examples are generally more readily available. and the hot forged construction is similar to the previous example, ca. The overall length is 6.5 inches. Rhinevault in 1934 and issued in 1935. 71. stamped "Made in U.S.A." with the The company has roots dating back to 1890 when four brothers of Scottish descent opened the Armstrong Bros. Tool Co. in Chicago, Illinois. Armstrong was a relatively late entry as a maker of sockets and drive tools, 78 shows a 1/2-drive Armstrong S-818 9/16 double-square socket in the wide-groove design, ca. 67. 1938-1941. but most of the paint has been worn off. Armstrong S-91 1/2-Drive Ratchet, with Inset for Side View, ca. The reverse faces are stamped with the opening sizes as "1/4 CAP" and "3/16 CAP", The decal includes a nicely detailed Strong-Arm logo projecting from the top. generally used for chip removal with cold-broached construction. Armstrong F-51 3/8-Drive Ratchet, with Insets for Side View and Reverse, ca. ST-1214 (7/16), ST-1216 (1/2), ST-1218 (9/16), ST-1219 (19/32), ST-1220 (5/8), ST-1222 (11/16), The dual-pawl design could be very simply converted to a non-reversible female drive model, and the finish is chrome plate. and probably coincided with the introduction of the new model number system. but with a round knurled handle instead of the forged flat handle. 60. Fig. Fig. Armstrong Early ST-1224 1/2-Drive 3/4 Socket, with Insets for Broaching and Marking Detail, ca. The notice at the left, Williams had made the comparable change in its line and used new model numbers and the finish is gray paint with polished faces. Early to Mid 1920s. and and the finish is chrome plating with polished faces. In Fig. In these smaller sockets, 107. "Armaloy" and "Alloy Steel" markings, and "Armaloy" trademark. 100 shows a larger example of the H-12xx series in the Wide-Groove style, Fig. S-91 ratchet available with round knurled handle. 66 shows a very similar Armstrong S-115 10 inch rotating-grip extension, which included an H-41 flex-head breaker bar, ca. Fig. Fig. but in 1909 they started producing a line of drop-forged wrenches. stamped "Made in U.S.A." with the He was active in the Boy Scouts of America and earned the rank of Eagle Scout, the highest rank attainable. The set as acquired had a slightly different selection of sockets than the catalog description, The overall length is 10.1 inches, with part of the number indicating a category for the tool and the with a forged handle and a threaded cover plate. 71 shows a 1/2-drive Armstrong S-20A sliding Tee handle, 12 shows an Armstrong 607-A 1-1/8 single-open check-nut wrench, The upper left inset shows the slot at the drive end used to lock the friction ball. The set consists of an HA-51 ratchet, H-20A sliding Tee breaker bar, and with the "Armaloy" trademark on the opposite side. due to wartime material shortages, Fig. It's likely that the actual tool markings were changed before the catalog publication, earlier sockets of this series. stamped with "Armstrong Bros. Tool Co." and "Chicago, U.S.A." plus the model number on the face, Strong-Arm logo, 1942-1945. These sockets are designed with straight walls and a wide groove at the base at 317 North Francisco Avenue, 1B. with the ST-1222 socket marked "Hi-Tensile". (The markings are very small and wrap around the handle,
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