408 KANSAS CITY REVIEW OF SCIENCE. 



which are chamfered from their inner edge outwardly, only leaving a sufficient 

 portion square at the ends for attachment to the heads of the chamber against 

 the edge of which they are securely clamped by metal hoops. 



A section of the bottom is provided with hinges and may be opened down- 

 wardly for clearing out the exhausted material. By oscillating the agitator sev- 

 eral times by means of a hand-crank fixed upon the outer end of the agitator 

 shaft, the clearing operation will be effectively accomplished. 



The feed-opening through which the grapes pass from the hopper to the 

 crushing-chamber, is controlled by an oscillating plate pivoted within the opening 

 and provided with means by which it may be graduated from time to time, as 

 required. 



This invention was recently patented by Messrs. William Maerz and J. B. 

 Klumpf, of Kansas City. 



Water-Tube Steam Boiler. — This invention relates to such simple im- 

 provements upon water-tube steam boilers that the same may readily be con- 

 structed at any desired location. ■ 



The boiler is especially designed for use in connection with steam heating, 

 as all its parts excepting the castings and the drums may be cut from ordinary 

 steam or gas pipe. 



Each section of the boiler consists essentially of either a single or double 

 row of horizontal tubes, preferably the latter, placed in a vertical line with each 

 other and having their front ends fixed within a vertical cast-iron flask that is 

 attached by means of threaded nipples to an intermediate drum situated trans- 

 versely to the lines of tubes and directly above the said flasks, and to which each 

 vertical flask is connected, at its upper end. 



The intermediate drum is provided with a vertical threaded connection by 

 which it is placed in communication with the main steam-drura. 



The before mentioned horizontal tubes are cut to such lengths that the lower 

 and the ones of shorter dimensions will, when provided with an elbow be of the 

 desired length for attachment by means of a short vertical pipe or nipple to one 

 of the threaded openings in a corresponding horizontal flask near the end oppo- 

 site the neck thereof, and the succeeding upper rows progress rearwardly in 

 length, the distance between the centers of the openings in the said horizontal 

 flasks. 



Each horizontal flask is, preferably, slightly inclined toward the mud-drum 

 to which they are connected. The said mud-drum is connected with the lower 

 surface of the main steam-drum by means of a single vertical tube of sufficient 

 size. 



The elbows, if so desired, may be dispensed with by bending the tube down- 

 wardly at the rear ends at a rectangle to the horizontal flasks, to which they may 

 be directly attached by any approved means. 



In operation the tubes and the main steam drum being filled with water to 

 the centre-line of the latter, the water in the tubes when heated rises in the verti- 



