Page:Federal Reporter, 1st Series, Volume 4.djvu/461

 BTBBBDÎS, ETC., ELEVATOB MANUï'G 00. V. 8TBBBINS. 44T �front elevation of my machine, and figure 2 is a side eleva- tion. A A represente two upright cylinders, vyhich are secured to the same bed piece, B, at a short distance apart, or any number of such cylinders can be used. Inside of these cylin- ders is a piston, C, and each of the pistons bas a bar, d, ex- tending upwards from its center in the manner of a piston -rod. These bars bave each a rib, /, extending the entire length along the middle of one side, as sho-wn, while their opposite pieces are framed into a rack. A strong meta! side piece, e, is secured to the outside of each of the cylinders. A» at their ùpper ends, bo as to project above fkem. A shaft,^, extends aeross above the cylinders back of the piston. Imrs, d, and bears in these side pieces. A spobl^ h, is sepured upon this shaft opposite the rib, /, of each bar, in which t;he ribs fit, 60 that theyform guides for the bar, d., A shaft, I, passes acrpss above the cylinders on the opposite side of the .bars, d, and also bears in the side pieces, e. Opposite each of the rack bars, d, a broad spur wheel, j, is secured to the shaft, I. so as to engage with the teeth on the vertical bars ; and between the two broad wheels, j, a large spur- wheel, K, is fixed to the shaft. Thus, when the rack bars, d, are raised, the wheels, j and K, on the shaft, I, are revolved by the engagement of the rack. Below the wheels, K, a shaft, l, passes aeross parallel, with the shaft, I, and bearing in the lower end of the side pieces, e. This shaft bas at its middle a pinion, m, which engages with the wheel, K, and at its extremity a large driving puUy is secured, marked w, around which the belt for the elevator or car passes. By this arrangement the cylinders, A A, can be made quite short, so that they can be placed in a cellar or othor small compartment, as the speed of the driving puUy can be multiplied at pleasure, and thus obtain a large amount of elevation for a short stroke of the piston bar. Either one or both of the rack bars can be used to transmit the power to the gearing. The water which lifts the pistons, C, and rack bar, d, is introduced into the cylinders through branch pipes, which are secured in the holes, o, in the bed piece. These pipes are so arranged that the water can be tumed into either one or ����