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Champion DeArment Tool Company

[Champion DeArment Anvil Logo]
Champion DeArment Anvil Logo.

Table of Contents

Introduction

The Champion DeArment Tool Company became most famous for their Channellock plier design, described by patent #1,950,362 and arguably one of the most important tool patents of the 20th century. The company later changed its name to Channellock, Inc., but we'll use the older name here.


Company History

Champion DeArment is actually one of the older American tool makers in continuous operation, with original roots going back to 1886 when its founder, George B. DeArment, operated a blacksmith shop. The company maintains a web site with an interesting page on the Company History, and readers are encouraged to check there for further information.


Patents

Table 1. Champion DeArment: Issued and Licensed Patents
Patent No.InventorFiledIssuedDescriptionExamples
908,969 G.B. DeArment03/07/190801/05/1909Hoof Shears  
1,162,141 G.B. DeArment01/20/191511/30/1915Tongs  
1,950,362 H.H. Manning02/08/193206/08/1934Tongue-and-Groove Pliers ["Channellock"] Early No. 407 Pliers
D94,156 H.H. Manning10/27/193312/25/1934Design for Battery Pliers No. 307 Battery Pliers
1,986,588 H.H. Manning05/19/193201/01/1935Hub Puller  
2,592,927 H.H. Manning08/04/194904/15/1952Improved Tongue-and-Groove Pliers Middle No. 420 Tongue-and-Groove Pliers
2,640,381 H.H. Manning07/09/195106/02/1953Improved Tongue-and-Groove Pliers Middle No. 420 Tongue-and-Groove Pliers
3,192,805 H.H. Manning04/17/196307/06/1965Improved Tongue-and-Groove Pliers Late No. 420 Tongue-and-Groove Pliers
4,603,607 B.P. Schaffner, Jr.02/25/198208/05/1986Rivet Construction for Slip-Joint Pliers No. 440 Tongue-and-Groove Pliers

Trademarks

Champion registered the trademark "Champion DeArment" with the first use listed as January 15, 1925. The "Channellock" trademark was registered with the first use listed as May 1, 1932.


Manufacturing Dates

Champion DeArment tools are not known to be marked with any date codes, so estimates of manufacturing dates must be made on the basis of markings, patents, or other factors.

  • Early Channellock Patent. Tongue-and-Groove pliers made with the original patented design were produced from 1932 until the early 1950s.
  • Middle Channellock Patents. Pliers in the second-generation design were produced from the early 1950s onward.
  • Channellock Name. Tools marked with the Channellock name instead of Champion DeArment were made in 1963 or later.
  • Late Channellock Patent. Pliers marked with patent #3,192,805 were produced from 1965 onward.
  • Rivet Construction. In 1982 Channellock filed a patent for the use of a rivet for tongue-and-groove pliers, replacing the bolt and nut used previously.
  • Blue Handles. Pliers were being supplied with blue plastic handgrips by the mid 1980s (or possibly earlier).

Hammers and Striking Tools

Champion DeArment offered a wide selection of ballpeen hammers, with head weights ranging from 3 up to 40 ounces.

Table 2. Champion DeArment Ballpeen Hammer Models and Sizes
Model
Number
Head
Weight
(Oz.)
Head
Dimensions
(Inches)
Example
6/030.75 x 2.00 
5/040.75 x 2.50 
4/060.88 x 2.75 
3/081.00 x 3.25 Champion 3/0 Ballpeen Hammer
2/0121.13 x 3.63 
0161.25 x 4.00 
1201.38 x 4.25 
2241.44 x 4.75 
3281.50 x 4.75 
4321.63 x 5.00 
6401.75 x 5.38 Champion No. 6 Ballpeen Hammer

Ballpeen hammer sizes are commonly specified by a number indicating the weight of the head without the handle. In this number system a No. 0 hammer head weighs approximately 16 ounces, but since hammers with lighter heads are often needed, the system was extended to include Nos. 00, 000, and so on, up six zeros.

Marking a long string of zeros could become a bit cumbersome, so an alternate notation is commonly used, with a number followed by a "/0" to indicate the number of zeros. For example, 2/0 indicates No. 00, 3/0 is No. 000, and so on. But to add confusion, the slash separator is sometimes omitted, so that a "3/0" size may be marked "30".

The Champion ballpeen hammers are summarized in the table at the left, as listed in a 1933 Ducommun catalog.


Champion DeArment 3/0 8 Ounce Ballpeen Hammers

The next two figures show examples of Champion ballpeen hammers in the 3/0 or 8 ounce size.

[Champion DeArment 3/0 8 Ounce Ballpeen Hammer]
Fig. 1. Champion DeArment 3/0 8 Ounce Ballpeen Hammer, with Insets for Side View and Marking Detail.

Fig. 1 shows a Champion 3/0 8 ounce ballpeen hammer, stamped with "Champion DeArment Tool Co." and an anvil logo on the face.

The overall length is 13.2 inches, and the head is 3.3 inches long.

[Champion DeArment 3/0 8 Ounce Ballpeen Hammer]
Fig. 2. Champion DeArment 3/0 8 Ounce Ballpeen Hammer, with Inset for Marking Detail.

Fig. 2 shows a Champion 3/0 8 ounce ballpeen hammer, marked on the face with "Champion DeArment Tool Co." and an anvil logo.

The overall length is 13.0 inches, and the head is 3.2 inches long.


Champion DeArment No. 6 40 Ounce Ballpeen Hammer

[Champion DeArment No. 6 40 Ounce Ballpeen Hammer]
Fig. 3. Champion DeArment No. 6 40 Ounce Ballpeen Hammer, with Insets for Marking Detail.

A much larger Champion hammer is shown in Fig. 3, a Champion No. 6 40 ounce ballpeen hammer marked "Champion DeArment" on the face. The size "6" is marked on the underside of the head, as shown in the lower inset.

The overall length is 16.1 inches, and the head measures 1.7x5.3 inches.


Wrenches


Champion DeArment 10 Inch Stillson-Pattern Pipe Wrench

[Champion DeArment 10 Inch Stillson-Pattern Pipe Wrench]
Fig. 4. Champion DeArment 10 Inch Stillson-Pattern Pipe Wrench, with Insets for Side View and Reverse Detail.

Fig. 4 shows a Champion DeArment 10 inch Stillson-pattern pipe wrench, marked with "Champion DeArment" and an anvil logo forged into the shank. The reverse is marked with "Champion DeArment" and "Meadville, PA. U.S.A." forged into the shank, but partially obscured by the jaw carrier assembly (see middle inset).

The jaw is also marked with the anvil logo forged into the top, with "Meadville, Penna. U.S.A." partially visible on the shank, and "Champion Dearment" on the reverse (not shown).

The overall length is 9.4 inches closed and 10.8 inches full extended.

The wooden handle is secured to a tapered tang by a nut on the end.


The Channellock Patent


Early Channellock No. 410 Tongue-and-Groove Pliers

We'll begin with an early example of the Channellock design.

[Channellock No. 410 Pliers]
Fig. 5. Channellock No. 410 Pliers, with Inset for Reverse Detail, ca. 1932-1934.

Fig. 5 shows a pair of Channellock No. 410 pliers, marked "Champion DeArment" and "Meadville, PA." on one handle, with the model number and Channellock logo on the other. The inset shows the "Pat. Appl'd For" notice on the reverse.

The overall length is 9.8 inches, and the finish is plain steel.

The patent pending status for these pliers suggests a manufacturing date from 1932-1934, between the patent filing and issue dates.


Channellock No. 420 Tongue-and-Groove Pliers

[Channellock No. 420 Tongue-and-Groove Pliers]
Fig. 6. Channellock No. 420 Tongue-and-Groove Pliers, with Insets for Side View and Marking Detail, ca. 1934-1951.

Fig. 6 shows a pair of Channellock No. 420 tongue-and-groove pliers of the original patented design, stamped with the Channellock logo and "Reg. U.S. Pat. Off." on the lower handle (but barely visible), with "Champion DeArment" and "Meadville, PA." on the upper handle. The inset in the middle shows a close-up of the patent notice "Pat. In Can. 1933 U.S. Pat. 1950362" on the reverse.

The overall length is 10.0 inches when fully extended, and the finish is plain steel.

The top inset shows a side view of the pliers, illustrating the simple linear gripping pattern on the handles.

The patent notice refers to the original Channellock patent #1,950,362, filed by H.H. Manning in 1932 and issued in 1934.


Channellock No. 407 Tongue-and-Groove Pliers

[Channellock No. 407 Pliers]
Fig. 7. Channellock No. 407 Pliers, with Insets for Marking Detail and Handle Pattern, ca. 1934-1951.

Fig. 7 shows a pair of Channellock No. 407 tongue-and-groove pliers, stamped with the Channellock logo and "Reg. U.S. Pat. Off." on the handle, with "Champion DeArment" and "Meadville, PA." on the reverse. The upper inset shows a close-up of the patent notice "Pat. In Can. 1933 U.S. Pat. 1950362" on the reverse.

The overall length is 7.3 inches, and the finish is plain steel.


Channellock No. 427 Tongue-and-Groove Pliers

[Channellock No. 427 Pliers]
Fig. 8. Channellock No. 427 Pliers, with Inset For Reverse Detail, ca. 1934-1951.

Fig. 8 shows a pair of Channellock No. 427 tongue-and-groove pliers, stamped with the Channellock logo and "Reg. U.S. Pat. Off." on the handle, with "Champion DeArment" and "Meadville, PA." on the reverse.

The overall length is 7.4 inches, and the finish is plain steel.


Second-Generation Patents


Channellock No. 420 Tongue-and-Groove Pliers

[Channellock No. 420 Pliers]
Fig. 9. Channellock No. 420 Pliers, with Inset for Marking Detail, ca. 1953-1962.

Fig. 9 shows a pair of Channellock No. 420 tongue-and-groove pliers, marked "Champion DeArment" and "Meadville, PA. U.S.A.", and with the patent notice "US Pats. 2592927 - 2640381" on the reverse.

The overall length is 10.2 inches, and the finish is polished steel.

The first patent number noted on the pliers is #2,592,927, issued to H.H. Manning in 1952. It describes an improvement to the basic tongue-and-groove design for greater strength, consisting of a flat rib extending outside the machined grooves.

The second patent is #2,640,381, issued to H.H. Manning in 1953. This patent describes the use of undercut ridges on tongue-and-groove pliers.


Channellock No. 410 Tongue-and-Groove Pliers

[Channellock No. 410 Pliers]
Fig. 10. Channellock No. 410 Pliers.

The overall length is 9.8 inches, and the finish is plain steel.


Channellock No. 426 Tongue-and-Groove Pliers

[Channellock No. 426 Pliers]
Fig. 11. Channellock No. 426 Pliers, with Inset for Reverse Detail, ca. 1963+.

Fig. 11 shows a pair of Channellock No. 426 tongue-and-groove pliers, marked "Meadville, PA. U.S.A." with the Channellock logo, and with the patent notice "US Pats. 2592927 2640381 Can. 1953" on the reverse.

The overall length ranges from 6.6 inches closed to 7.1 inches fully extended. The finish is plain steel.


Third-Generation Patent

In 1965 H.H. Manning received one additional patent related to the Channellock pliers design, an improved way of machining the undercut ridge. Patent #3,192,805 was filed in 1963.


Channellock No. 420 Tongue-and-Groove Pliers with Late Patent

[Channellock No. 420 Tongue-and-Groove Pliers]
Fig. 12. Channellock No. 420 Tongue-and-Groove Pliers, with Insets for Construction and Marking Detail, ca. 1965+.

Fig. 12 shows a later pair of Channellock No. 420 tongue-and-groove pliers, stamped with the Channellock name and "Meadville, PA. U.S.A." on the handle, and with "US Pats. 2592927 3192805" stamped on the reverse.

The overall length is 10.0 inches, and the finish is polished steel.

The first patent number noted is the Manning 1952 patent #2,592,927, describing a ridge extending beyond the grooves for greater strength.

The second number is patent #3,192,805, filed by H.H. Manning in 1963 and issued in 1965. This patent describes a machining technique to cut a specific shape for the undercut ridge on the pliers.


The Blue Handle Era

Channellock later began providing pliers with plastic handgrips in a distinctive blue color, and in 1988 registered "Channellock Blue" as a color trademark, a new concept in trademark protection at the time.


Channellock No. 440 Tongue-and-Groove Pliers

[Channellock No. 440 Tongue-and-Groove Pliers]
Fig. 13. Channellock No. 440 Tongue-and-Groove Pliers, ca. 1980s+.

Fig. 13 shows a fairly recent pair of Channellock 440 tongue-and-groove pliers, marked "Meadville, PA U.S.A." and equipped with the familiar blue hand grips.

The overall length is 12.0 inches, and the finish is plain steel.

Although not marked with a patent number, these pliers are held together by a rivet as described in patent #4,603,607.


Channellock No. 460 Tongue-and-Groove Pliers

[Channellock No. 460 Tongue-and-Groove Pliers]
Fig. 14. Channellock No. 460 Tongue-and-Groove Pliers, ca. 1980s+.

Fig. 14 shows another example of recent Channellock production, the Channellock 460 tongue-and-groove pliers, marked "Made in U.S.A." and fitted with blue hand grips.

The overall length (fully extended) is 18.1 inches, and the finish is plain steel.

The pliers are equipped with eight grooves, and can provide a parallel opening up to 3.8 inches wide. The rivet construction is described by patent #4,603,607.


Other Pliers


Champion DeArment No. 307 Battery Pliers

[Champion DeArment No. 307 Battery Pliers]
Fig. 15. Champion DeArment No. 307 Battery Pliers.

Fig. 15 shows a pair of Champion DeArment No. 307 battery pliers, stamped with "Champion DeArment" and "Meadville, PA. U.S.A." on one handle.

The overall length is 7.1 inches, and the finish is plain steel.

These pliers are described by design patent #D94,156, filed by H.H. Manning in 1933.


Channellock 317-1/2 7.5 Inch Needlenose Pliers with Side Cutters

[Channellock 317-1/2 7.5 Inch Needlenose Pliers]
Fig. 16. Channellock 317-1/2 7.5 Inch Needlenose Pliers, with Insets for Side View and Reverse Detail, ca. 1963+.

Fig. 16 shows a pair of Channellock 317-1/2 7.5 inch needlenose pliers with side cutters, stamped with "Channellock" and "Meadville, PA. U.S.A." around the pivot, with the model number on the reverse.

The overall length is 7.8 inches, and the finish is plain steel with polished faces.


Channellock 326 6 Inch Needlenose Pliers with Side Cutters

[Channellock 326 6 Inch Needlenose Pliers]
Fig. 17. Channellock 326 6 Inch Needlenose Pliers, with Inset for Side View, ca. 1963+.

Fig. 17 shows a pair of Channellock 326 6 inch needlenose pliers with side cutters, marked "Meadville, PA. U.S.A." near the pivot.

The overall length is 6.0 inches, and the finish is plain steel with polished faces.


Channellock 437 7 Inch Diagonal Cutters

[Channellock 437 7 Inch Diagonal Cutters]
Fig. 18. Channellock 437 7 Inch Diagonal Cutters, with Insets for Head and Handle Pattern, ca. 1963+.

Fig. 18 shows a pair of Channellock 437 7 inch diagonal cutters, stamped "Channellock" and "Meadville U.S.A." around the pivot.

The overall length is 7.3 inches, and the finish is plain steel with polished faces.


Channellock 447 Angle-Nose Diagonal Cutters

[Channellock 447 Angle-Nose Diagonal Cutters]
Fig. 19. Channellock 447 Angle-Nose Diagonal Cutters, with Insets for Side View and Marking Detail, ca. 1963+.

Fig. 19 shows a pair of Channellock 447 7 inch diagonal cutters with an angled head, stamped "Channellock" and "Meadville, PA. U.S.A." on the reverse.

The overall length is 7.7 inches, and the finish is plain steel.


Channellock 516 6 Inch Slip-Joint Combination Pliers

[Channellock 516 6 Inch Combination Pliers]
Fig. 20. Channellock 516 6 Inch Combination Pliers, with Inset for Side View, ca. 1963+.

Fig. 20 shows a pair of Channellock 516 6 inch slip-joint combination pliers, stamped "Channellock" and "Meadville, PA. U.S.A." on the handle.

The overall length is 6.4 inches, and the finish is polished steel.


Channellock 548 8 Inch Slip-Joint Combination Pliers

[Channellock 548 8 Inch Slip-Joint Combination Pliers]
Fig. 21. Channellock 548 8 Inch Slip-Joint Combination Pliers, with Inset for Side View, ca. 1963+.

Fig. 21 shows a pair of Channellock 548 slip-joint combination pliers, stamped "Channellock" and "Meadville, PA. U.S.A." on the handle.

The overall length is 8.2 inches, and the finish is polished steel.


Channellock 3048-1/2 8-1/2 Inch Lineman's Pliers

[Channellock 3048-1/2 8-1/2 Inch Lineman's Pliers]
Fig. 22. Channellock 3048-1/2 8-1/2 Inch Lineman's Pliers, with Insets for Side View and Reverse Detail, ca. 1963+.

Fig. 22 shows a pair of Channellock 3048-1/2 8-1/2 inch lineman's pliers, stamped "Channellock" and "Meadville, PA. U.S.A." around the pivot, and with the model number on the reverse.

The overall length is 8.6 inches, and the finish is polished steel.

The Champion DeArment catalog No. 556 of 1956 refers to this model as "Bevel Nose Lineman's Pliers". Three sizes were available as models 3046, 3047, and 3048-1/2, with nominal sizes 6, 7, and 8.5 inches respectively.

References and Resources

Photographs and observations of particular tools are based on items in the Alloy Artifacts collection.

Channellock maintains a web site with an informative page on the Company History, and readers are encouraged to check there for more information on this company.


Catalog Coverage

Product information was obtained from several Champion DeArment and Channellock catalogs, as summarized in the table below.

Catalog Date Notes
No. 67 1928  
No. 353 1953 Illustration shows advantages of second-generation "Channellock" patents.
No. 556 1956  
No. 68 1968? Channellock, Inc. company name. Blue grip handles available.

Patent and Trademark Information

Patent information was obtained from the U.S. Patents and Trademarks Office (USPTO) web site at uspto.gov. Patent documents were obtained from sites offering free downloads, notably freepatentsonline.com.


Feedback

If any readers have additional information regarding Champion DeArment or Channellock, please let us know via the "Contact Us" link on the home page. Your comments and suggestions are welcome as well.


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