Contemporary longcase clock cases were similarly veneered. He keeps old manuscripts in an antique longcase clock by the chimney-corner. The walnut longcase clock was made by Schofield's of Rochdale. Another longcase clock by Harrison is in the Charlbury Society Museum. A longcase clock that he made in about 1770 is known to survive. Harrison built his first longcase clock in 1713, at the age of 20. The longcase clock inflicted a severe wound to the back of Cornwell's head. One longcase clock dated 1725 is signed "Sam Aldworth at Childrey From London". The longcase clock in the corner was sold c. 1720 by William Troutbeck of Leeds.