Arthur L. Cobb Sr., 61, former owner of a service station and also of a fleet of cabs in Washington, died of cancer Sunday at the Washington Hospital Center. He lived in Washington.

He was proprietor of Cobb's Exxon Service Station at Third and L streets NE from 1961 until retiring in 1978.

Mr. Cobb was born in Yanceyville, N.C. He servied with the Army in World War II and came to Washington after the war.

While driving a cab for the Capitol Cab Co., he also attended the Veterans Training Center at Armstrong High School, completing training in automobile mechanics in 1950. Later, he received further training with the Small Business Administration.

Mr. Cobb became owner of a small fleet of cabs in the Capitol Cab Co. He ended that business association in 1979.

He was a deacon and trustee of the Shiloh Baptist Church. He was a Mason.

He is survived by his wife, Blondelia M., a son, Arthur L. Jr., a daughter, LaDora A., and two sisters, Clara Murphy and Annie Phillips, all of Washington.

The family suggests that expressions of symapthy be in the form of contributions to the building expansion fund at Shiloh Baptist Church.