Duro Metal Products Co. - Assigned Patents

Manufacturers Index - Duro Metal Products Co.

Duro Metal Products Co.
Chicago, IL., U.S.A.
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
1,744,413	Jan. 21, 1930	Socket-wrench tool	Edward H. Peterson	Chicago, IL
		Socket-wrench tool	Norris F. McNaught	Chicago, IL
1,749,300	Mar. 04, 1930	Valve grinder	Edward Henry Peterson	Chicago, IL
		Valve grinder	William H. Odlum	Chicago, IL
1,751,657	Mar. 25, 1930	Operating mechanism for valve grinders	Edward H. Peterson	Chicago, IL	Duro Metal Products Co. also manufactured woodworking machinery. This valve grinder was sold as the Duro No. 711.
		Operating mechanism for valve grinders	Norris F. McNaught	Chicago, IL
1,756,121	Apr. 29, 1930	Support for portable power saws	Theron L. Hedgpeth	Berkeley, CA
1,788,535	Jan. 13, 1931	Socket-wrench kit	Edward Henry Peterson	Chicago, IL	The patent focuses on the holder for a wrench set comprised of a ratchet, hex-shaft nut driver / handle, and hex drive sockets and screwdriver tip. The top portion is a slip-in holder for the hex bar and ratchet. It hinges to one side to open the compartment for the sockets. A known example is marked only with the patent number stamped in the base; the set may have had a paper label or come in a box.
		Socket-wrench kit	Norris F. McNaught	Chicago, IL
1,798,481	Mar. 31, 1931	Ratchet lever	Edward Henry Peterson	Chicago, IL	The ratchet driver that cites this patent uses the second form shown in the drawings. It was used as the driver handle in some DURO socket sets.
		Ratchet lever	Norris F. McNaught	Chicago, IL
1,798,482	Mar. 31, 1931	Ratchet lever	Edward Henry Peterson	Chicago, IL	Looks identical to the second form shown and described in parallel patent no. 1,784,481's drawings & specifications. A close reading of the relative specifications & claims shows some slight additional elaborations in this patent. The DURO ratchet handle is marked with patent no. 1,798,481.
		Ratchet lever	Norris F. McNaught	Chicago, IL
1,799,462	Apr. 07, 1931	Spare-tire lock	Walter Lewis Hawkins	St. Louis, MO
1,825,007	Sep. 29, 1931	Valve seat reconstruction tool	Norris F. McNaught	Chicago, IL
1,828,043	Oct. 20, 1931	Adjustable support for portable power saws	Theron L. Hedgpeth	Oakland, CA	This invention is a kit to convert a handheld circular saw into a radial arm saw. The original patent application was split in two, the other part becoming patent 1,756,121. Inventor Hedgpeth became an important inventor for Duro Metal Products Co.
1,846,641	Feb. 23, 1932	Radial saw arm	Theron L. Hedgpeth	Warsaw, IN	This invention is a kit to convert a handheld circular saw into a radial arm saw. The patent is an improvement on patent 1,828,043. Inventor Hedgpeth became an important inventor for Duro Metal Products Co.
1,851,313	Mar. 29, 1932	Spare tire lock	Colvin L. Johnson	St. Louis, MO
1,854,137	Apr. 12, 1932	Spare wheel or tire lock	Walter L. Hawkins	St. Louis, MO
1,857,211	May. 10, 1932	Wheel puller	Edward Henry Peterson	Chicago, IL
		Wheel puller	William H. Odlum	Chicago, IL
1,858,372	May. 17, 1932	Valve spring compressor	Edward H. Peterson	Chicago, IL
		Valve spring compressor	Norris F. McNaught	Chicago, IL
1,868,839	Jul. 26, 1932	Ratchet lever	Edward H. Peterson	Chicago, IL
		Ratchet lever	Norris F. McNaught	Chicago, IL
1,868,840	Jul. 26, 1932	Ratchet lever	Edward H. Peterson	Chicago, IL
		Ratchet lever	Norris F. McNaught	Chicago, IL
1,872,493	Aug. 16, 1932	Brake lining tool	Edward Henry Peterson	Chicago, IL
		Brake lining tool	William H. Odlum	Chicago, IL
1,877,348	Sep. 13, 1932	Valve grinder	Edward Henry Peterson	Chicago, IL
		Valve grinder	Norris F. McNaught	Chicago, IL
1,902,878	Mar. 28, 1933	Ratchet wrench	Edward Henry Peterson	Chicago, IL	The main feature of this patent is the method of assembly. The component parts of the ratchet mechanism are inserted in the wrench body and after the side plates are in place, the assembly is compressed with double dies which fold the edges of the recess over the side plates and lock all the parts together without rivets or screws. One of the side plates has a hole to oil the interior mechanism. The set in the 2nd photo is a DURO-CHROME No. 4490 refrigeration wrench including sockets with integral 1/4" studs to fit the 1/4" square drive in the ratchet head. The design was also used in contract production of tools appearing with other brands.
		Ratchet wrench	Norris F. McNaught	Chicago, IL
1,903,058	Mar. 28, 1933	Means and method for applying brake shoe linings	Edward Henry Peterson	Chicago, IL
		Means and method for applying brake shoe linings	Norris F. McNaught	Chicago, IL
1,921,225	Aug. 08, 1933	Spare wheel lock	Walter L. Hawkins	St. Louis, MO
1,932,796	Oct. 31, 1933	Grease ram	Norris F. McNaught	Chicago, IL
1,950,493	Mar. 13, 1934	Spare wheel and tire lock	Colvin L. Johnson	St. Louis, MO
1,952,087	Mar. 27, 1934	Valve guide and unseater	Edward Henry Peterson	Chicago, IL
		Valve guide and unseater	Norris F. McNaught	Chicago, IL
1,968,215	Jul. 31, 1934	Tool for cleaning commutators and the like	Edward Henry Peterson	Chicago, IL
		Tool for cleaning commutators and the like	Norris F. McNaught	Chicago, IL
RE19,341	Oct. 16, 1934	Ratchet Wrench and Method of Making the Same	Norris F. McNaught	Chicago, IL	The ratchet is a rotating toothed disk, pawl and spring inside a drop forged frame, with side plates retaining the parts pressed into place. One of the side plates has a hole to oil the pawl and spring. Herbert Fish's Dec. 18, 1951 split socket ratchet patent (no. 2,578,687) cites this patent in the "References."
		Ratchet Wrench and Method of Making the Same	Edward H. Peterson	Chicago, IL
1,978,590	Oct. 30, 1934	Wrench joint	Edward Henry Peterson	Chicago, IL
		Wrench joint	Norris F. McNaught	Chicago, IL
D95,825	Jun. 04, 1935	Design for a sanding machine	Theron L. Hedgpeth	Oak Park, IL
D97,643	Nov. 26, 1935	Design for a table jointer	Theron L. Hedgpeth	Oak Park, IL
2,027,922	Jan. 14, 1936	Method of making wrench sockets	Norris F. McNaught	Chicago, IL
2,044,982	Jun. 23, 1936	Sanding machine	Theron L. Hedgpeth	Oak Park, IL
2,044,983	Jun. 23, 1936	Belt and pulley measuring apparatus	Theron L. Hedgpeth	Oak Park, IL
2,064,351	Dec. 15, 1936	Socket wrench kit	Edward Henry Peterson	Chicago, IL
		Socket wrench kit	Norris F. McNaught	Chicago, IL
2,064,483	Dec. 15, 1936	Sanding machine	Albert G. McCaleb	Evanston, IL
2,065,341	Dec. 22, 1936	Socket wrench kit	Edward Henry Peterson	Chicago, IL
		Socket wrench kit	Norris F. McNaught	Chicago, IL
2,065,340	Dec. 22, 1936	Socket wrench kit	Edward Henry Peterson	Chicago, IL	Co-inventor Norris F. McNaught was co-founder of Duro Metal Products Co. Indestro Mfg. Co. was an unrelated business making bottle capping machines that went under during the Great Depression and its assets were acquired by Duro, which sometimes used the Indestro name on their own products.
		Socket wrench kit	Norris F. McNaught	Chicago, IL
D103,579	Mar. 16, 1937	Wrench	Norris F. McNaught	Chicago, IL	The design incorporates multiple hex box and 8-point box openings. Produced as Duro Chrome No. D644 and Indestro Super No. 644.
2,075,282	Mar. 30, 1937	Bench saw	Theron L. Hedgpeth	Oak Park, IL
2,076,511	Apr. 06, 1937	Woodworking tool	Theron L. Hedgpeth	Oak Park, IL
2,080,475	May. 18, 1937	Stand for motor driven tools	Theron L. Hedgpeth	Oak Park, IL
D104,869	Jun. 08, 1937	Design For A Wrench	Norris F. McNaught	Chicago, IL	Automotive multi-wrench design for several 1930's automobiles; one known example marked with Chevrolet applications. Cited as a reference in Design patent 176,005.
D105,337	Jul. 20, 1937	Design For A Wrench	Norris F. McNaught	Chicago, IL	Automotive multi-wrench design for 1930's Ford automobiles.
D105,338	Jul. 20, 1937	Wrench	Norris F. McNaught	Chicago, IL	The stamped steel wrench has three sizes of 12-point box, 1 square, and one 8-point.
D106,035	Sep. 14, 1937	Design for a band saw head	Theron L. Hedgpeth	Oak Park, IL
2,095,330	Oct. 12, 1937	Bench saw	Theron L. Hedgpeth	Oak Park, IL
2,097,920	Nov. 02, 1937	Bench saw table	Theron L. Hedgpeth	Oak Park, IL
2,099,519	Nov. 16, 1937	Woodworking tool	Theron L. Hedgpeth	Oak Park, IL	See also patent 2,123,627.
2,101,709	Dec. 07, 1937	Bench saw rip fence	Theron L. Hedgpeth	Oak Park, IL
2,104,158	Jan. 04, 1938	Work guide for woodworking tools	Theron L. Hedgpeth	Oak Park, IL	See also patent 2,076,511.
2,111,067	Mar. 15, 1938	Chuck for Woodworking Tools	Theron L. Hedgpeth	Oak Park, IL	Original application filed 02 May 1935. Divided and this application filed 31 Dec 1936.
2,123,627	Jul. 12, 1938	Woodworking tool	Theron L. Hedgpeth	Oak Park, IL	See also patent 2,099,519.
D111,026	Aug. 23, 1938	Combination Tool	William R. Hosford	Chicago, IL	Nut driver handle with sockets stored on the hexagonal shank. Known example marked INDESTRO SUPER NO. 360 PAT DES. 111026 U.S.A. does not have a screwdriver tip on the shank. Williams, Bradbury, McCaleb & Hinkle - patent attorneys.
2,154,745	Apr. 18, 1939	Power driven tool	Theron L. Hedgpeth	Oak Park, IL
D115,042	May. 30, 1939	Design for a power-driven hand tool unit	Theron L. Hedgpeth	Oak Park, IL
2,176,572	Oct. 17, 1939	Power driven tool	Theron L. Hedgpeth	Oak Park, IL
2,188,595	Jan. 30, 1940	Mounting for power tool	Theron L. Hedgpeth	Oak Park, IL
D119,441	Mar. 12, 1940	Design For Battery Pliers	William A. Sandy	Chicago, IL	Battery pliers with 1/2" and 9/16" 12-point box end wrenches on handle ends. Known examples marked DURO and BELDEN.
2,208,843	Jul. 23, 1940	Power driven tool	Theron L. Hedgpeth	Oak Park, IL	Spring tensioning for scroll saw.
2,218,168	Oct. 15, 1940	Power tool	Theron L. Hedgpeth	Oak Park, IL
2,225,049	Dec. 17, 1940	Woodworking tool	Theron L. Hedgpeth	Oak Park, IL	Improvements to patent 2,126,627.
2,237,556	Apr. 08, 1941	Miter gauge	Theron L. Hedgpeth	Oak Park, IL
2,255,884	Sep. 16, 1941	V belt	Theron L. Hedgpeth	Oak Park, IL
2,256,624	Sep. 23, 1941	Wrench joint	William H. Odlum	Chicago, IL
2,274,923	Mar. 03, 1942	Band saw	Theron L. Hedgpeth	Oak Park, IL	Bandsaw has tilt of upper wheel adjustment in front.
2,285,713	Jun. 09, 1942	Jig saw	Theron L. Hedgpeth	Oak Park, IL
2,321,660	Jun. 15, 1943	Milk container	Joseph F. Courtney	Chicago, IL	Co-assignee Hedgpeth was a machine designer for woodworking machinery maker Duro Metal Products Co.
2,363,350	Nov. 21, 1944	Tool for Sevicing Battery Terminals	Walter P. Nail	ON, Canada	McCaleb, Wendt & Dickinson - patent attorneys
D143,931	Feb. 19, 1946	Tool Handle	William H. Odlum	Wilmette, IL	McCaleb, Wendt & Dickinson - patent attorneys
2,395,681	Feb. 26, 1946	Ratchet mechanism	Karl A. Paine	Park Ridge, IL
		Ratchet mechanism	William H. Odlum	Wilmette, IL
2,447,085	Aug. 17, 1948	Welded joint	William H. Odlum	Wilmette, IL
2,626,639	Jan. 27, 1953	Belt and pulley drive means for tiltable saws and the like	Theophil A. Hess	Chicago, IL
498,416	Dec. 15, 1953	Belt and pulley drive means for tiltable saws and the like	Theophil A. Hess	Chicago, IL	This is the Canadian equivalent of US patent 2,704,463.
2,675,033	Apr. 13, 1954	Mounting means for rip fences for table saws	Theophil A. Hess	Chicago, IL
2,678,071	May. 11, 1954	Motor mounting and drive means for power tools	William F. Hosford	Chicago, IL
		Motor mounting and drive means for power tools	William H. Odlum	Wilmette, IL
2,686,582	Aug. 17, 1954	Reversible drive mechanism	William H. Odlum	Wilmette, IL	This patent number appears on a Montgomery Ward Wardmaster half-inch ratchet wrench part no. I84-4860R.
		Reversible drive mechanism	William F. Hosford	Chicago, IL
2,704,463	Mar. 22, 1955	Driving means for tiltable arbors and the like	Theophil A. Hess	Chicago, IL
2,740,437	Apr. 03, 1956	Clamping device for guide fence on work table	Clarence C. Wieser	Chicago, IL
		Clamping device for guide fence on work table	William H. Hosford	Chicago, IL
		Clamping device for guide fence on work table	William H. Odlum	Wilmette, IL
2,771,103	Nov. 20, 1956	Fence for the work-supporting table of a power tool	Clarence C. Wieser	Chicago, IL
		Fence for the work-supporting table of a power tool	William H. Hosford	Chicago, IL
		Fence for the work-supporting table of a power tool	William H. Odlum	Wilmette, IL
2,778,053	Jan. 22, 1957	Separable hinged mounting for motors or the like	Paul B. McKain	Chicago, IL
		Separable hinged mounting for motors or the like	Theophil A. Hess	Chicago, IL
2,779,362	Jan. 29, 1957	Safety lock for cutter head of jointer	Theophil A. Hess	Chicago, IL
2,787,305	Apr. 02, 1957	Retaining means for power tool gauge	Theophil A. Hess	Island Lake, IL
		Retaining means for power tool gauge	William F. Hosford	Chicago, IL
2,794,459	Jun. 04, 1957	Jig saw blower	Clarence C. Wieser	Chicago, IL
		Jig saw blower	William F. Hosford	Chicago, IL
2,796,091	Jun. 18, 1957	Mounting for an axially movable motor	William F. Hosford	Chicago, IL
		Mounting for an axially movable motor	William H. Odlum	Wilmette, IL
2,836,273	May. 27, 1958	Reversible one-way drive mechanism	William F. Hosford	Chicago, IL	See also patent 2,686,582.
		Reversible one-way drive mechanism	William H. Odlum	Wilmette, IL
2,841,289	Jul. 01, 1958	Wall rack for mechanics' tools	William H. Odlum	Wilmette, IL
		Wall rack for mechanics' tools	John R. Gracious	Glenview, IL
2,852,047	Sep. 16, 1958	Tilting and elevating mechanism for a disc type table saw	William F. Hosford	Chicago, IL	"...it is accordingly among the more specific objects of this invention to fabricate the elevating and tilting mechanism from sheet metal stampings in lieu of castings to reduce the cost thereof while at the same time increasing their rigidity."
		Tilting and elevating mechanism for a disc type table saw	William H. Odlum	Wilmette, IL
567,916	Dec. 23, 1958	Retaining means for power tool gauge	Theophil A. Hess	Island Lake, IL	This is the Canadian equivalent of US patent 2,787,305.
		Retaining means for power tool gauge	William F. Hosford	Chicago, IL
2,901,767	Sep. 01, 1959	Separable mountings for electric motors or the like	William F. Hosford	Chicago, IL
		Separable mountings for electric motors or the like	William H. Odlum	Wilmette, IL
2,911,700	Nov. 10, 1959	Separable mountings for electric motors or the like	Harry H. Wieland	Chicago, IL
2,913,200	Nov. 17, 1959	Separable mounting for electric motors or the like	Karl A. Paine Jr.	Park Ridge, IL
		Separable mounting for electric motors or the like	Paul B. McKain	Chicago, IL
587,150	Nov. 17, 1959	Safety lock for cutter head of jointer	Theophil A. Hess	Chicago, IL	This is the Canadian equivalent of US patent 2,779,362.
598,927	May. 31, 1960	Separable hinged mountings for motors or the like	Theophil A. Hess	Chicago, IL	This is the Canadian equivalent of US patent 2,778,053.
		Separable hinged mountings for motors or the like	Paul B. McKain	Chicago, IL
RE24,862	Aug. 23, 1960	Wall Rack for Mechanics' Tools	William H. Odlum	Wilmette, IL	H. Thrall Brewer - patent attorney
3,041,023	Jun. 26, 1962	Separable mountings for electric motors or the like	William F. Hosford	Chicago, IL	See also patent 2,901,767.
		Separable mountings for electric motors or the like	William H. Odlum	Wilmette, IL
4,277,990	Jul. 14, 1981	Ratchet wrench	Roy L. Hall	Hoffman Estates, IL