Caterpillar (CAT 1.26%) delivered another strong quarter and raised its margin and free-cash-flow targets for the new year. Investors were happy to see Cat purring along during what has been a shaky environment for some industrial companies, and sent the company's shares up by about 5% at the open on Monday. Profits soar as Cat holds steady in a tough environment Caterpillar makes giant machines used in construction and mining. It is a well-run business, but it is reliant on end markets that tend to be cycl ...