Mr. Vinayak worked in BAIF for 15 years as a lift operator and then based himself in Vansda as a hand pump mechanic. His interest in oil engines, motor enignes, motor cycles and even bicylces led him to invent simple machines and tools. Device Helping to Engage the Connecting Rod without A Check nut: He has developed a reverse Funnel shaped device, which helped to engage the connecting rod without a check nut.