New Knox Four-Wheel Tractor
The Knox Motors Company, of Springfield, Mass., has recently placed on the market a new four-wheel tractor for fire service. Simplicity, accessibility and reliability have been the keynote of the design, and the Knox Company makes even greater claims for this machine than any of their previous models. While the principle of attaching the tractor to steamers, ladder trucks, aerials, etc., is the same as on the three-wheel tractor, the design of the tractor proper has been changed materially. Among new features are the patented hydraulic brakes, enabling the operator to exert with ease tremendous power on the rear axle drum; the differential lock, with which the tractor and its load may be safely operated in bad going and on slippery places; control board at the steering column, within easy reach of switches, fuses, gauges and speedometer; unique jack shaft brakes; the case of adjustment and renewal of shoes. The motor, while retaining the overhead features, is of entirely new design. It has four cylinders, 5-inch bore and 5 1/2-inch stroke, and is said to be capable of pulling its load over some of the steepest grades and as fast as safety will permit on level road. The fifth wheel, or trailer platform, is made of unusual size and is so constructed as to fit the platform of any steamer, ladder truck or other form of apparatus. In coupling, the connection is made by means of an ordinary king bolt, and the original springs are preserved. In case of accident to the motor mechanism, or during the periodical overhauling necessary on all motors, the fire apparatus itself can be quickly detached by removing the king pin; or, at the discretion of the fire chief, the tractor can be quickly transferred to some other fire station. In towns where there is one steamer the original front axle can be preserved, and in case of an unexpected emergency the change back to horsedrawn apparatus can be made in thirty minutes. Full equipment is furnished with this new model including the Bijur electric starting and lighting system; trailer platform complete, two electric side lamps, one electric tail lamp, one electric searchlight, Willard storage battery, 6 volts, 160 amperes; electric siren horn, hand fire extinguishers, speedometer, complete set of skid chains, etc. Several options are given on the tire equipment, standard sizes of which are 34×5, single, front; 40×6 dual rear.