D. H. Whittemore was granted letters patent for his "Improved Apple-Parer and Slicer" on August 10, 1869 (Whittemore, 1869). The parer was in essence a "all iron" version of his board-mounted Bay State Apple Paring, Coring, and Slicing Machine. The parer was one of three Whittemore parers featured as improvments to apple parers at the Centennial International Exhibition of 1876 held in Philadelphia, Pennsylvania. Soon after the Exhibition Goodell Company of Antrim, New Hampshire became sole manufacturers of Whittemore's design (Viney, 2018). Goodell made improved versions of the parer under the names Family Bay State and Improved Bay State (Thornton, 1997).
Working with antique parers can be a challenge, some may take practice, while others may need adjustments. Cutting blades may need to be put into the correct orientation or sharpened. Shafts and gears may need lubrication and old springs may not provide the tension needed for paring.
Thornton, D. 1997. Apple Parers. Sunnyvale, California: Off Beat Books, p. 173.
Viney, M. Whittemore Board-Mounted Lathe Parers. ISAPE, August 2018, Issue 109.
Whittemore, D.H., inventor, Improved Apple-Parer and Slicer, 1869 Aug. 10. US93574.