1856. 



NEW ENGLAND FARMER. 



313 





i^'^'i^m^r^:^:^^ 



'aHTUTTU^'^ 



PATENT SELF-REGULATING WIND-MILL. 



The vrinA has been pressed into the service of 

 man on land, as well as on the sea, in many ways. 

 It raised the water to irrigate the lands of the an- , 

 cients, as well as to winnow their grain and fill their 

 sails. Some interesting relics are left of the wind- 

 mills of our fathers, erected soon after the settle- 

 ment at Plymouth. But generally, they have been 

 found somewhat uncontrollable, and liable to be 

 broken in high winds. It is said that the one here 

 represented is cheap and not liable to this objec- 

 tion. 



The Pennsylvania Farm Journal, from which 

 we take the description, says the accompanying 

 engravings illustrate an improvement for which a I 

 patent was granted to Dr. Frank G. Johnson, No. 

 196 Bridge St., Brooklyn, N. Y., on the 16th of. 

 January, 1856. 



The invention consists in providing the wings of 

 the machine with weights and springs, which are 



so arranged as to control the position of the wings, 

 causing them, whenever their velocity is too great, 

 to be more or less turned edgewise to the wind, 

 and vice versa. Also in providing the wind wheel 

 with a stop wheel, arranged in such a manner that 

 a slight pressure on the stop wheel has the same 

 effect on the wings as an increased velocity of the 

 wind, thus enabling the wings to be turned edge- 

 wise to the wind, and the mill to be thereby stopped 

 at pleasure. 



In the engraving fig. 1 is a perspective, and figs. 

 2, 3, 4, sectional views of the improvements. Sim- 

 ilar letters refer to the same parts. 



The sHding weights G, figs. 1 and 3, connecting 

 rods, r, and spiral springs, Y, constitute the gover- 

 nor or regulating apparatus. When the wheel re- 

 volves at its maximum velocity, the weights by cen- 

 trifugal force are thrown out from the centre, and 

 the extremities of the rods, r, drawn closer togeth- 



