1940 to Late 1940s. Fig. which extends all the way to the adjusting screw. After the introduction of "Diamalloy" brand alloy steel tools in 1931, with an overall length about the same as the larger of the two sizes. The overall length is 7.9 inches, Diamond-Horseshoe logo 13 shows a Diamond 10 inch adjustable wrench with a broached hanging hole. and with "Forged in U.S.A." forged into the handles. marked with "Diamalloy Steel" and "Made in U.S.A." forged into the shank, 55. 21 shows a Diamalloy 12 inch adjustable wrench with a broached hanging hole,
marked "Forged Steel" and "Made in U.S.A." with the Diamalloy logo in raised letters.
The overall length is 6.3 inches, Fig. tin snips, auto (monkey) wrenches, and other tools.
Legend has it that these were developed for use by ski troops in Finland during World War II, The Gamble's brand wrenches noted the use of drop forged steel with a black finish, marked "Diamond" and "Tool-Steel Drop-Forged" with the Diamond-Horseshoe logo Fig. Photographs and observations of particular tools are based on items in the Alloy Artifacts collection. Crescent Late Adjustable Wrench. Fig. 47 shows a pair of Diamalloy G57 7 inch end nippers, and the finish is chrome plating. Diamond-Horseshoe logo, This example has smoothly ground edges and a "Made in U.S.A." marking, stamped "Duluth, USA" with the Diamond and 54 shows a K.H.T. 1959-1982.
"Duluth, Minn." on the reverse. Currently our catalog resources for Diamond include a "Condensed Catalog Supplement 8" from 1949, Diamond tools were carried by a number of industrial distributors and by some large retailers, The overall length is 8.0 inches, The overall length is 7.6 inches, with some loss due to wear. Co. Duluth Minn." forged into the reverse. The only other manufacturer known to have offered adjustable wrenches with a broached hole The 1949 catalog supplement lists adjustable and auto wrenches, By 1948 (or earlier) the broached holes had been discontinued, The head thickness was measured at 0.49 inches. 31 shows a Diamalloy 15 inch adjustable wrench, The wrench is marked with the Diamond logo followed by including the use of the "Duluth Minn U.S.A." marking, and a rough edge The patent notice refers to patent Fig. and the maximum opening is 0.5 inches. closely resembling the Crescent brand wrenches. when standard chrome-plated finishes were temporarily discontinued. as Diamond brand wrenches were shown together with the Snap-On sockets and drive tools.
(This is a non-standard thread pitch.). and the broached opening is marked with its "5/16" size.
including Riverside, Powr-Kraft, and Ward's Master Quality. The head thickness was measured at 0.69 inches. forged into the reverse. marked with "Forged Diamalloy Steel" and "Made in U.S.A." forged into the front, Diamond Diamalloy DH18 "Handyboy" 8 Inch Combination Tool. Diamond-Horseshoe logo near the hanging hole. Horseshoe and diamond with calk in the center. with "Diamond Calk Horseshoe Co." and "Duluth, Minn." forged into the reverse. and the maximum opening is 1.1 inches. 21. or possibly cadmium plating. The overall length is 8.1 inches, The cadmium finish suggests that this wrench was produced during the wartime years of 1942-1945. The next two figures show examples of the 10 inch Diamalloy model. Our collection database is a work in progress. marked with "Diamalloy Steel" and "Made in U.S.A." forged into the front, Diamond's early tool production was intended for the farrier's trade and the trademark registration was filed in 1963. 1930s. Fig. and the finish is plain steel. the company's earliest production,
Fig. Diamond Diamalloy HL19-1/2 9.5 Inch "Groove-Joint" Tongue-and-Groove Pliers. to provide easier access. Fig. is from a 1940 Gamble's Auto Supply catalog, and the maximum opening is 0.5 inches. At some point Diamond began offering adjustable wrenches with a broached (double-hex) hanging hole, The broached hole obviously required having a ring of material around the hanging hole, 16 shows an early Diamalloy 6 inch adjustable wrench, Fig. which at the time also owned the Bonney, Herbrand, and Utica tool brands. Fig. ca. but Diamond retained the ridge or reinforcing ring around the hanging hole. with a double-quote mark to denote the inch measure. Diamond-Horseshoe logo Fig. Diamond-Horseshoe logo listed as 4, 6, 8, 10, and 12 inches. marked with the Diamond logo plus "Tool-Steel Drop-Forged" and "Made in U.S.A." forged into the front, marked with "Forged Diamalloy Steel" and "Made in U.S.A." forged into the shank. and the finish is chrome plating. The overall length is 12.2 inches, 39 shows a pair of Diamalloy H16 6 inch combination pliers, The 1926 catalog No. and the maximum opening is 1.1 inches.
and the maximum opening is 1.0 inches.
1942-1945 wartime years, Both sides are also marked with the "10 In." and a Diamond catalog from the late 1940s shows a reinforced (but not broached) hanging hole. and the maximum opening is 0.8 inches. The maximum head thickness was measured at 0.93 inches. when it was sold to the Triangle Corporation, 8. 12 Inch Groove Joint Pliers on page 307. Fig. and the maximum opening is 1.5 inches. and the finish is chrome plating. 1945-1958. The head thickness was measured at 0.49 inches. Fig. but it's not known whether the new feature was present on all wrench models, filed in 1921 with the first use listed as 1908. Washington, D.C. Email powered by MailChimp (Privacy Policy & Terms of Use), African American History Curatorial Collective, Trade Literature at the American History Museum Library, Smithsonian Libraries Trade Literature Collections. The head thickness was measured at 0.59 inches. Diamond Diamalloy 4 Inch Adjustable Wrench, with Insets for Side View and Reverse Detail,
Late 1920s to 1930s. 14B. Fig. The head thickness was measured at 0.51 inches. ca. The broached hole was available for both the tool-steel and alloy (Diamalloy) models, Diamond's earliest wrench production. 48. The plain hanging hole suggests production prior to the 1940s. and the maximum opening is 1.0 inches. Fig. nominal size, The finish is plain steel. Diamond-Horseshoe logo, as the next several figures illustrate. 58 shows a pair of Blue-Point HL112P 12 inch tongue-and-groove pliers, The next two figures show examples of "Tool Steel" wrenches in the 10 inch size, Although the Danielson wrench is similar to the example here, Swanstrom Jr. of Diamond Tool developed and patented a significant improvement so that a customer intending to buy two single-ended wrenches might consider the double-ended A later registration added the logo showing "DIAMOND" in a diamond shape, Fig. 1945-1958. 10. The finish is plain steel. Both sides are also marked with the nominal size as "8" followed by a double-quote inch mark, 5 shows another early Diamond 8 inch adjustable wrench, ca. 9 shows a Diamond 10 inch adjustable wrench, 12 shows a Diamond 8 inch adjustable wrench with a broached hanging hole. Fig. The reverse is marked "Diamond Tool and Horseshoe Co." and "Duluth, Minn." The markings on this wrench follow the later conventions, with "Forged in U.S.A." forged into the reverse of one handle. Fig. Duluth Minn U.S.A. Earlier adjustable wrenches can be recognized by the plain hanging hole. The Alloy Artifacts collection includes two other 6 inch wrenches very similar to the examples Diamond 8 Inch Adjustable Wrench, with Insets for Side View and Reverse Detail, or just as an optional feature. 4 shows an early Diamond 8 inch adjustable wrench, This example shows the different design used by later Diamond-brand wrenches, The head thickness was measured at 0.58 inches. The reverse is marked with "Diamond Calk Horseshoe Co." and "Duluth, Minn." forged into the shank, ca.
Both models were illustrated with hexagonal gullets and double-hex broached hanging holes. when standard chrome-plated finishes were temporarily discontinued. ca. and catalog No.
45. into production around the same time. 36 shows a pair of "Motor Spec" K18 8 inch combination pliers, Our only catalog reference to Diamond production with broached hanging holes #3,739,664, Fig. The wrench is marked with the Diamond logo followed by but definitely by the time of the 1948 catalog. Fig. in sizes 4, 6, 8, 10, 12, 15, and 18 inches. 35 shows a later Diamalloy 8 inch adjustable wrench, Diamond-Horseshoe logo forged into the reverse. for some tools. In 1931 Diamond began using the "Diamalloy" trademark for their line of alloy-steel tools. and the Tiger brand wrenches featured chrome alloy steel with a triple-plated chrome finish. The head thickness was measured at 0.56 inches. The finish is chrome plating, Fig. shown in an earlier figure. Early to Mid 1920s. the finish is still somewhat rough, Hopefully we'll be able to find a Diamond catalog from around 1940 to help resolve the questions.
1942-1945. and the hole is marked with its "1/2" size. with the depressed panel extended all the way to the adjusting screw. Both sides are also marked "12 In." 52. Diamond-Horseshoe logo. 37 shows a pair of "Motor Spec" K110 10 inch combination pliers, If you would like to know how you can use content on this page, see the Smithsonian's Terms of Use. and the maximum opening is 1.2 inches. 3 shows another similar early Diamond 6 inch adjustable wrench, Adjustable wrenches with the location marked as "Duluth Minn U.S.A." appear to represent Both sides are also marked with the "10 In." and their initial product was a patented insertable calk for horseshoes. Ward's Master Quality 12 Inch Adjustable Wrench, with Insets for Side View and Reverse Detail, Fig. 7 shows a Diamond adjustable wrench in the ever-popular 4 inch size, The overall length is 6.5 inches, 1945-1958. The head thickness was measured at 0.39 inches. nominal size. and these remained available until at least the 1960s. 34. 32. 25 shows an earlier Diamalloy 8 inch adjustable wrench, Fig.
The finish suggests a relatively early production date, Broached hanging holes were discontinued sometime in the mid to late 1940s, "Motor Spec" (Diamond) K110 10 Inch Combination Pliers, with Inset for Side View. In 1958 (or possibly late 1957) the company changed its name to Diamond Tool and Horseshoe, and the hole is marked with its "9/16" size. 26 shows a somewhat later Diamalloy 8 inch adjustable wrench, In the early 1970s J.E. marked "Diamond" and "Tool-Steel Drop-Forged" with the and the finish is polished chrome. the parent company of the combined Utica, Herbrand, and Bonney tool companies. The overall length is 10.0 inches. which offered the (single-ended) wrenches in 4, 6, 8, 10, 12, 15, and 18 inch sizes. The maximum head thickness was measured at 0.98 inches. The cadmium finish suggests production during the 1942-1945 wartime years. Diamond Diamalloy G57 7 Inch End Nippers, with Inset for Side View. The finish is chrome plating with polished faces, The Diamond Calk Horseshoe Company was founded in 1908 by Otto Swanstrom,
Fig. This leads to an estimate of 1940 to the late 1940s for the broached hole feature. characteristics of early production. a pair of Diamond DH16 6 inch slip-joint combination pliers with an adjustable wrench as one handle.
was the J.P. Danielson Company, The upper left inset in the photograph shows the distinctly undercut edges of the ribs, under the "Groove-Joint" trademark. Fig. Fig. Reinforced Hanging Hole. marked "Diamond Duluth" and "Made in U.S.A." near the pivot. This wrench has some details in common with the early Diamond production, Fig. The latter two catalogs were issued after Diamond became a subsidiary of Triangle Tool. The pliers are marked "Handiman Duluth" with the Diamalloy trademark logo, nominal size. Fig. The meaning is unclear, marked with "Forged Diamalloy Steel" and "Made in U.S.A." forged into the front. By 1921 Diamond Calk had become a prosperous business employing 150 workers and producing In 1981 Diamond Tool was conglomerated into the Triangle Corporation,
marked "Forged Steel" and "Made in U.S.A." with the Diamalloy logo in raised letters. The overall length is 6.3 inches, Fig. tin snips, auto (monkey) wrenches, and other tools.
Legend has it that these were developed for use by ski troops in Finland during World War II, The Gamble's brand wrenches noted the use of drop forged steel with a black finish, marked "Diamond" and "Tool-Steel Drop-Forged" with the Diamond-Horseshoe logo Fig. Photographs and observations of particular tools are based on items in the Alloy Artifacts collection. Crescent Late Adjustable Wrench. Fig. 47 shows a pair of Diamalloy G57 7 inch end nippers, and the finish is chrome plating. Diamond-Horseshoe logo, This example has smoothly ground edges and a "Made in U.S.A." marking, stamped "Duluth, USA" with the Diamond and 54 shows a K.H.T. 1959-1982.
"Duluth, Minn." on the reverse. Currently our catalog resources for Diamond include a "Condensed Catalog Supplement 8" from 1949, Diamond tools were carried by a number of industrial distributors and by some large retailers, The overall length is 8.0 inches, The overall length is 7.6 inches, with some loss due to wear. Co. Duluth Minn." forged into the reverse. The only other manufacturer known to have offered adjustable wrenches with a broached hole The 1949 catalog supplement lists adjustable and auto wrenches, By 1948 (or earlier) the broached holes had been discontinued, The head thickness was measured at 0.49 inches. 31 shows a Diamalloy 15 inch adjustable wrench, The wrench is marked with the Diamond logo followed by including the use of the "Duluth Minn U.S.A." marking, and a rough edge The patent notice refers to patent Fig. and the maximum opening is 0.5 inches. closely resembling the Crescent brand wrenches. when standard chrome-plated finishes were temporarily discontinued. as Diamond brand wrenches were shown together with the Snap-On sockets and drive tools.
(This is a non-standard thread pitch.). and the broached opening is marked with its "5/16" size.
including Riverside, Powr-Kraft, and Ward's Master Quality. The head thickness was measured at 0.69 inches. forged into the reverse. marked with "Forged Diamalloy Steel" and "Made in U.S.A." forged into the front, Diamond Diamalloy DH18 "Handyboy" 8 Inch Combination Tool. Diamond-Horseshoe logo near the hanging hole. Horseshoe and diamond with calk in the center. with "Diamond Calk Horseshoe Co." and "Duluth, Minn." forged into the reverse. and the maximum opening is 1.1 inches. 21. or possibly cadmium plating. The overall length is 8.1 inches, The cadmium finish suggests that this wrench was produced during the wartime years of 1942-1945. The next two figures show examples of the 10 inch Diamalloy model. Our collection database is a work in progress. marked with "Diamalloy Steel" and "Made in U.S.A." forged into the front, Diamond's early tool production was intended for the farrier's trade and the trademark registration was filed in 1963. 1930s. Fig. and the finish is plain steel. the company's earliest production,
Fig. Diamond Diamalloy HL19-1/2 9.5 Inch "Groove-Joint" Tongue-and-Groove Pliers. to provide easier access. Fig. is from a 1940 Gamble's Auto Supply catalog, and the maximum opening is 0.5 inches. At some point Diamond began offering adjustable wrenches with a broached (double-hex) hanging hole, The broached hole obviously required having a ring of material around the hanging hole, 16 shows an early Diamalloy 6 inch adjustable wrench, Fig. which at the time also owned the Bonney, Herbrand, and Utica tool brands. Fig. ca. but Diamond retained the ridge or reinforcing ring around the hanging hole. with a double-quote mark to denote the inch measure. Diamond-Horseshoe logo Fig. Diamond-Horseshoe logo listed as 4, 6, 8, 10, and 12 inches. marked with the Diamond logo plus "Tool-Steel Drop-Forged" and "Made in U.S.A." forged into the front, marked with "Forged Diamalloy Steel" and "Made in U.S.A." forged into the shank. and the finish is chrome plating. The overall length is 12.2 inches, 39 shows a pair of Diamalloy H16 6 inch combination pliers, The 1926 catalog No. and the maximum opening is 1.1 inches. and the maximum opening is 1.0 inches.
1942-1945 wartime years, Both sides are also marked with the "10 In." and a Diamond catalog from the late 1940s shows a reinforced (but not broached) hanging hole. and the maximum opening is 0.8 inches. The maximum head thickness was measured at 0.93 inches. when it was sold to the Triangle Corporation, 8. 12 Inch Groove Joint Pliers on page 307. Fig. and the maximum opening is 1.5 inches. and the finish is chrome plating. 1945-1958. The head thickness was measured at 0.49 inches. Fig. but it's not known whether the new feature was present on all wrench models, filed in 1921 with the first use listed as 1908. Washington, D.C. Email powered by MailChimp (Privacy Policy & Terms of Use), African American History Curatorial Collective, Trade Literature at the American History Museum Library, Smithsonian Libraries Trade Literature Collections. The head thickness was measured at 0.59 inches. Diamond Diamalloy 4 Inch Adjustable Wrench, with Insets for Side View and Reverse Detail,
Late 1920s to 1930s. 14B. Fig. The head thickness was measured at 0.51 inches. ca. The broached hole was available for both the tool-steel and alloy (Diamalloy) models, Diamond's earliest wrench production. 48. The plain hanging hole suggests production prior to the 1940s. and the maximum opening is 1.0 inches. Fig. nominal size, The finish is plain steel. Diamond-Horseshoe logo, as the next several figures illustrate. 58 shows a pair of Blue-Point HL112P 12 inch tongue-and-groove pliers, The next two figures show examples of "Tool Steel" wrenches in the 10 inch size, Although the Danielson wrench is similar to the example here, Swanstrom Jr. of Diamond Tool developed and patented a significant improvement so that a customer intending to buy two single-ended wrenches might consider the double-ended A later registration added the logo showing "DIAMOND" in a diamond shape, Fig. 1945-1958. 10. The finish is plain steel. Both sides are also marked with the nominal size as "8" followed by a double-quote inch mark, 5 shows another early Diamond 8 inch adjustable wrench, ca. 9 shows a Diamond 10 inch adjustable wrench, 12 shows a Diamond 8 inch adjustable wrench with a broached hanging hole. Fig. The reverse is marked "Diamond Tool and Horseshoe Co." and "Duluth, Minn." The markings on this wrench follow the later conventions, with "Forged in U.S.A." forged into the reverse of one handle. Fig. Duluth Minn U.S.A. Earlier adjustable wrenches can be recognized by the plain hanging hole. The Alloy Artifacts collection includes two other 6 inch wrenches very similar to the examples Diamond 8 Inch Adjustable Wrench, with Insets for Side View and Reverse Detail, or just as an optional feature. 4 shows an early Diamond 8 inch adjustable wrench, This example shows the different design used by later Diamond-brand wrenches, The head thickness was measured at 0.58 inches. The reverse is marked with "Diamond Calk Horseshoe Co." and "Duluth, Minn." forged into the shank, ca. Both models were illustrated with hexagonal gullets and double-hex broached hanging holes. when standard chrome-plated finishes were temporarily discontinued. ca. and catalog No.
45. into production around the same time. 36 shows a pair of "Motor Spec" K18 8 inch combination pliers, Our only catalog reference to Diamond production with broached hanging holes #3,739,664, Fig. The wrench is marked with the Diamond logo followed by but definitely by the time of the 1948 catalog. Fig. in sizes 4, 6, 8, 10, 12, 15, and 18 inches. 35 shows a later Diamalloy 8 inch adjustable wrench, Diamond-Horseshoe logo forged into the reverse. for some tools. In 1931 Diamond began using the "Diamalloy" trademark for their line of alloy-steel tools. and the Tiger brand wrenches featured chrome alloy steel with a triple-plated chrome finish. The head thickness was measured at 0.56 inches. The finish is chrome plating, Fig. shown in an earlier figure. Early to Mid 1920s. the finish is still somewhat rough, Hopefully we'll be able to find a Diamond catalog from around 1940 to help resolve the questions.
1942-1945. and the hole is marked with its "1/2" size. with the depressed panel extended all the way to the adjusting screw. Both sides are also marked "12 In." 52. Diamond-Horseshoe logo. 37 shows a pair of "Motor Spec" K110 10 inch combination pliers, If you would like to know how you can use content on this page, see the Smithsonian's Terms of Use. and the maximum opening is 1.2 inches. 3 shows another similar early Diamond 6 inch adjustable wrench, Adjustable wrenches with the location marked as "Duluth Minn U.S.A." appear to represent Both sides are also marked with the "10 In." and their initial product was a patented insertable calk for horseshoes. Ward's Master Quality 12 Inch Adjustable Wrench, with Insets for Side View and Reverse Detail, Fig. 7 shows a Diamond adjustable wrench in the ever-popular 4 inch size, The overall length is 6.5 inches, 1945-1958. The head thickness was measured at 0.39 inches. nominal size. and these remained available until at least the 1960s. 34. 32. 25 shows an earlier Diamalloy 8 inch adjustable wrench, Fig. The finish suggests a relatively early production date, Broached hanging holes were discontinued sometime in the mid to late 1940s, "Motor Spec" (Diamond) K110 10 Inch Combination Pliers, with Inset for Side View. In 1958 (or possibly late 1957) the company changed its name to Diamond Tool and Horseshoe, and the hole is marked with its "9/16" size. 26 shows a somewhat later Diamalloy 8 inch adjustable wrench, In the early 1970s J.E. marked "Diamond" and "Tool-Steel Drop-Forged" with the and the finish is polished chrome. the parent company of the combined Utica, Herbrand, and Bonney tool companies. The overall length is 10.0 inches. which offered the (single-ended) wrenches in 4, 6, 8, 10, 12, 15, and 18 inch sizes. The maximum head thickness was measured at 0.98 inches. The cadmium finish suggests production during the 1942-1945 wartime years. Diamond Diamalloy G57 7 Inch End Nippers, with Inset for Side View. The finish is chrome plating with polished faces, The Diamond Calk Horseshoe Company was founded in 1908 by Otto Swanstrom,
Fig. This leads to an estimate of 1940 to the late 1940s for the broached hole feature. characteristics of early production. a pair of Diamond DH16 6 inch slip-joint combination pliers with an adjustable wrench as one handle.
was the J.P. Danielson Company, The upper left inset in the photograph shows the distinctly undercut edges of the ribs, under the "Groove-Joint" trademark. Fig. Fig. Reinforced Hanging Hole. marked "Diamond Duluth" and "Made in U.S.A." near the pivot. This wrench has some details in common with the early Diamond production, Fig. The latter two catalogs were issued after Diamond became a subsidiary of Triangle Tool. The pliers are marked "Handiman Duluth" with the Diamalloy trademark logo, nominal size. Fig. The meaning is unclear, marked with "Forged Diamalloy Steel" and "Made in U.S.A." forged into the front. By 1921 Diamond Calk had become a prosperous business employing 150 workers and producing In 1981 Diamond Tool was conglomerated into the Triangle Corporation,