The mowing-bar is adjusted to cut at optional heights up to 9 inches from the ground by means of a chain extending from the inner hinge casting to a notched bracket placed under one of the forward motor head bolts. By this adjustment, the mowing-bar floats at a designated height from the ground, missing all accumulated trash, so injurious to sickle-bars.

The power to operate the sickle-blade is taken from the pulley-gear of the Fordson through a two-speed, self-lubricating power take-off, giving the operator the option of six cutting speeds and having the power of the motor in reserve, thus insuring a clean job of cutting, even when tackling the most rank growths of weeds or grass.

It is reported that one Wisconsin county recently purchased two Fordsons equipped with the Detroit mower to replace contracts for mowing at $2 per mile. One of the contractors having a patrol had equipped his Fordson with a Detroit mower and Whitehead & Kales highway wheels and to the surprise of the Highway Commission turned in vouchers for $75 daily, but only for a few days. Immediate action was taken by the Road Commission, resulting in the above purchase.

A New Electric Siren with a Radius of a Quarter of a Mile

For use in fire-trucks, ambulances, motorcycles, and other municipal conveyances, the Federal Electric Co., 8700 South State Street, Chicago Ill., has produced a new electric siren. It has a sound radius of 4-mile, and may be adjusted in either a horizontal or a vertical position.

The siren is of "streamline" design, and all visible parts, including the bracket and base, are heavily nickel-plated, giving a durable and attractive appearance. It is weatherproof, being entirely enclosed, and is simple in construction. The motor housing and horn of the siren are of spun brass. The base is of cast brass. The stator and rotor are die-cast from high-grade aluminum. The Uni

THE NEW FEDERAL ELECTRIC
SIREN

versal motor may be had in any voltage from 6 to 250 volts, inclusive.

In addition to the nickel-plated finish, the siren may be had in brass finish, buffed, brushed and lacquered. The lead wire may be brought through the base or through a bushing on the side of the bracket, as no wiring need be exposed.

Dunn Now With American Hume
Concrete Pipe Co.

The American Hume Concrete Pipe Co., United Savings Bank Building, Detroit, Mich., has announced that J. A. Dunn has taken the position of Chief Engineer of the American Hume Concrete Pipe Co., the licensees for America for the Australian Hume developments. Mr. Dunn, who was formerly Assistant Secretary of the American Concrete Pipe Association and later Chief Engineer for the Independent Concrete Pipe Co., at Indianapolis, succeeds W. D. Kimmel, who has resigned to take over the management of the Detroit Hume Pipe Co., the Michigan licensees for the Hume process. Mr. Kimmel has been with the company since its inception two years ago.

A New Oil-Burning Tar Heater

A new oil-burning tar heater which heats quickly and economically and is simple to operate, has been developed by the Joseph Honhorst Co., 1016 West 6th Street, Cincinnati, Ohio. This heater is of the torch type, burning kerosene and emitting a long, streaming flame which can be regulated to contro! the temperature. Baffle-plates distribute the hot gases evenly and force them into contact with all parts of the kettle. The fuel tank is of pressed steel with a hand pump, pressure gage and hose connection. The manufacturers claim a distinct advantage in the ease with which the burner can be removed from the heater and used independently for other purposes.

The kettle is half round, made of heavy steel with welded, leak-proof seams. Hot material is drawn off through a 2-inch valve in the rear. A strainer plate over this outlet prevents dirt from clogging the valve. A new feature is the perforated division plate inside the kettle, which keeps the cold lumps of material separate and allows the melted material to flow toward the draw-off, where the heat is more intense. The result is that the material flows from the kettle at a much higher temperature. The cover is attached with hinges and fits tightly, so that the material will not splash out when the heater is being moved. Steel wheels with plain bearings are standard equipment, but roller bearings and rubber tires can be furnished where desired. When rubber tires are furnished, guards are provided to protect them from the heat.

Recent Norwood Contracts

The Norwood Enginering Co., Holyoke, Mass., has recently secured the contract for a new 5,000,000-gallon filtration plant for the city of Meriden, Conn. This company also has the contract for the filtration plants at Lake Forest, Ill.; Dunkirk, N. Y.; High Point, N. C., and Elizabeth City, N. C., and contracts for additional filters for Raleigh, N. C., and Akron, N. Y.

A Completely Equipped Road-
Building Truck

The officials of Oscoda Township, Iosco County, Mich., recently purchased a Duplex roadbuilding and maintenance truck built by the Duplex Truck Co., Lansing, Mich. This truck is said to be one of the most completely equipped trucks made for road service. The chassis is the standard 3-ton Duplex, and the body is of three yards capacity with an underbody power hoist. The road scraper is the latest type Monarch reversible scraper and can be adjusted from the driver's seat. The snowplow is a Wausau Universal plow; the contour of the moldboard is such that the snow, instead of being wedged or thrust from the highway, is actually lifted and rolled in exactly the same manner as soil is turned by an agricultural plow. The push frame of the snow-plow is not attached to the front axle, but is rigidly secured to the frame. The snow-plow rides on heavy adjustable shoes, and a safety shoe is provided at the nose to take care of the car tracks and other obstructions that may be encountered.

With a dump-body for hauling materials, a road scraper and a snow-plow all combined in one unit, this truck makes it possible for a town to keep its highways in good condition during the summer months, as well as to remove the snow in the winter so that the roads will be open for traffic throughout the year. By combining all three units in one job, the initial cost is lower than when separate units are purchased, as well as there being no idle motor equipment during any period of the year, an advantage recognized by all road construction and maintenance departments as of great importance to the taxpayers.