Kett Tool Co. - Assigned Patents | VintageMachinery.org

Manufacturers Index - Kett Tool Co.

Kett Tool Co.
Cincinnati, OH, U.S.A.
Company Website: https://www.kett-tool.com/
Manufacturer Class: Wood Working Machinery & Metal Working Machinery

Patents

This page contains information on patents issued to this manufacturer.

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Patent Number	Date	Title	Name	City	Description
2,358,077	Sep. 12, 1944	Auger bit	Albert C. Koett	Cincinnati, OH	This auger bit design is especially intended for drilling larger sizes, greater than one inch, without requiring excessive power. It uses a fine-pitch lead screw, e.g., 32 TPI, and with a relatively long straight section to pull the bit through the hole without stripping. The lead-screw has one or more flutes so that it cuts rather than compresses the wood being drilled. The auger portion is of conventional construction.
2,360,144	Oct. 10, 1944	Drill chuck	Albert C. Koett	Cincinnati, OH	This drill chuck offers improvements to the type of chuck as shown, where bits can be changed without stopping the drill. "However, during their daily use it has been the experience that the unskilled workman, inserting a drill into the chuck, may push the back end of the drill against the springs and break or damage them, and once this occurs, the operation of the unit is impaired. On the other hand, the small compression springs tend to be fatigued after a period of use and either break of their own accord or lack the desired compression to thrust the jaws toward open position as the cap is unscrewed... To overcome these difficulties a principal objective of the present invention has been to provide a chuck in which the jaws are actuated by a single spring or thrust element which is proportioned to resist fatigue..."
2,372,006	Mar. 20, 1945	Chuck	Albert C. Koett	Cincinnati, OH
2,502,656	Apr. 04, 1950	Power-driven rotary hand guided cutting tool	Albert C. Koett	Cincinnati, OH
2,553,416	May. 15, 1951	Universal drill head	Albert C. Koett	Cincinnati, OH
2,934,822	May. 03, 1960	Device for cutting sheet material	Melford H. Docken	Minneapolis, MN	The 1959-02-14 issue of the Minneapolis Star Tribune carried the following announcement. "New Shear Devisedâ€”C. W. Lind Co., Minneapolis, announced the development of a new sheet metal shear which will fit most industrial type quarter-inch drills for power supply. It is called the Docken Shear." A 1961 issue of Machinery carried an announcement that C. W. Lind Co. had introduced a new all-in-one shear "with its own power unit". With a year or so, mentions of the Lind Co.'s shear disappear and instead we find mentions of the "Burke-Docken" shear manufactured by W. P. B. Industrial Products, Inc., of Skokie, Illinois. Ads and mentions for the Burke-Docken shear continued well into the 1970s, touting its 360-degree swiveling head and its ability to handle material up to 16 gauge. By 1971, Burke-Docken shears were also manufactured by Kett Tool Co. After its expiry this patent was improved in patent 4,173,069, assigned to Kett Tool Co.
3,186,333	Jun. 01, 1965	Rubber band stretching apparatus	Harry L. Sidenstick	Cincinnati, OH
		Rubber band stretching apparatus	Henry R. Hoffman	Cincinnati, OH
3,262,201	Jul. 26, 1966	Cutting device	Melford H. Docken	Holcombe, WI	The inventor had earlier patented power shears for metal, which were subsequently manufactured by W. P. B. Industrial Products.
3,393,633	Jul. 23, 1968	Rubber band stretching method	Harry L. Sidenstick	Cincinnati, OH
		Rubber band stretching method	Henry R. Hoffman	Cincinnati, OH
3,572,396	Mar. 23, 1971	Rubber band stack and method and apparatus for its manufacture	Harry L. Sidenstick	Cincinnati, OH
		Rubber band stack and method and apparatus for its manufacture	Henry R. Hoffman	Cincinnati, OH
4,173,069	Nov. 06, 1979	Power shear head	Harry L. Sidenstick	Cincinnati, OH	Improvements to shears of the type shown in patent 2,934,822, to better adapt them for cutting heavier gauge material, such as 14 gauge mild steel or 16 gauge stainless steel. One issue is to avoid a tightly coiled curl, which requires excessive power to produce. Another is that the "load imposed upon the cam ring employed to oscillate the movable shear blade caused that cam ring to be pulled off the eccentric bushing upon which it was mounted." The improvements include "the provision of diverging arms formed on the rear edge of the movable blade for engagement with the cam ring. Secondly, the pivot point of the movable shear blade is shifted to the opposite side of the motor drive axis, i.e., the side remote from the cutting edge of the blade. Finally, contact is established between the arms of the movable blade and the circular ram ring on portions of the ring disposed toward the cutting edges from the transverse center line of the ring." This combination of elements was determined to produced a curl of cut metal that was sufficiently curled to clear both the shear and the workpiece, but not too small as to waste power in its formation. As well, the cam ring is no longer susceptible to damage in ordinary use.
		Power shear head	Henry R. Hoffman	Cincinnati, OH
7,971,360	Jul. 05, 2011	Powered hand-Held metal cutter	Alexander Rozumovich	Loveland, OH	These shears are adapted for cutting corrugated building panels.
		Powered hand-Held metal cutter	Mark Clark	Liberty Township, OH
D690,172	Sep. 24, 2013	Metal shear head center blade	Alexander Rozumovich	Loveland, OH