ing will cause it to break. - ♦ - Recent Patents. CHECK-VALVE. Taylor W. IIeintzelman, of Sacramento, Cal., has patented the two forms of check-valves shown by figs. 1 and 2. It will be seen that in each case there is a valve inside of the boiler which will close and prevent the escape of hot water… … position by the shaft E% and a stop, c. O'2 is an extension of C, which communicates with the annular space Cl and 0 *, some improvements in his invention. Notwithstanding the a valve which is opened and closed by the bell-crank F, rod //, length of this description, our readers, we think, will be…