No. 133.1 109 



axle, which permits the vehicle to be turned in about half the 

 usual space. 



The adoption of the wooden springs renders the vehicle lighter 

 and of much clieaper construction. Springs of wood for an omni- 

 bus to carry 12 persons, will weigh 75 pounds, against 400 pounds 

 by the ordinary method ; for a carriage with two seats, 20 pounds 

 against 100 pounds. Buggy for two, 12 pounds against 50 pounds, 

 &c. 



The cut at the head of this notice represents the springs attach- 

 ed to the rear and front axles, ready to receive the a body of a 

 carriage with two seats. a. c. 



HYDROSTATIC REGULATOR, 



Messrs. Sloan & Leggett, corner of Lexington avenue and 

 Thirtieth street, exhibited an apparatus under the above name, 

 designed for regulating the admission of water into steam boilers. 

 It consists of a float placed inside the boiler, which acts through 

 a stem upon projections above the boiler. The projections are 

 regulated to act upon the water cock, and are of difl'erent lengths, 

 corresponding to different appertures of the water cock, they are 

 acted upon at each revolution of the machinery, by a cam, so 

 that in case the water changes from its proper level, a longer or 

 shorter projection, as the case requires, is brought in contact with 

 the cam, opening or shutting the valve, thereby increasing or 

 diminishing the quantity of water, according to the power re- 

 quired at the time. In case of a dangerous deficiency of water, 

 the machine is so arranged that an alarm is given. a. c. 



MACHINE FOR CUTTING BOLTS AND NUTS. 



A. C. Powell, Syracuse, N. Y., exhibited an improved machine 

 for the above purpose, which met the approbation of the judges. 

 One of the merits of this machine is the greater convenience 

 afforded the operator, enabling him to stand immediately in front 

 of, and near his work. a. c. 



