Possible Clues:

• Polearm featuring an ax and a spike
• Renaissance weapon
• Sharp instrument drives cattle round a pound
• Might Henry be getting the doctor back length like a pike
• Weapon of the mob - about a pound in weight
• Ancient battle-axe
• Bent bar held as a weapon
• Bill will let fifty be in a hard way
• Sounds as if Henry might get along flying
• Henry's hobby, for example, said to be making weapon