SECURING THE OPEN DOOR 



163 



Tioo-H 



the more it is opened. It is understood, of course, that the hinges 

 themselves are in perfect line, otherwise they would not operate; 

 it is the line of the door-jamb that is thrown out of plumb. 



Regular double-acting hinges are not necessary for partition 

 doors and gates. They are apt to be too expensive. A simple 

 gate hinge, or something 

 fashioned after it, such as 

 indicated in detail 4, Fig. 

 112, will work just as well. 



Keeping a Door Open. — 

 Sometimes it is just as im- 

 portant to keep a door open 

 as it is to keep it closed. For 

 example, in warm weather 

 the doors to poultry build- 

 ings should be kept open as 

 much as possible. The in- 

 teriors need all the fresh air 

 available, which is espe- 

 cially desirable in colony 

 houses for growing stock. 

 Then, too, very often the 

 entrance door is the only 

 means of egress for the 

 fowls, there being no 

 special hen door; in which 

 case it is important that 

 the main door be held 

 open at all times the flock 

 is at liberty. 



Sudden storms are likely to occur, accompanied by high winds, 

 which will slam and play havoc with doors if they are not firmly 

 secured. If the doors blow shut, the fowls will be unable to seek 

 the shelter of the houses, and such exposure to very young stock 

 is almost certain to result in fatalities. On the other hand, if the 

 door sways violently with the wind, though it does not actually 



Fig. 114.- 



-Convenient device for securing 

 the open door. 



