US1217591A - Water-cooled brake for vehicles. - Google Patents

Description

L. GOLDMERSTEIN.

WATER COOLED BRAKE FOR VEHICLES.

APPLICATEON FILED SEPT. 21, l9l6.

Patented Feb. 27, 1917.

LEON GOLDMERSTEIN, OF NEW YORK, N. Y.

WATER-COOLED BRAKE FOR VEHICLES.

Specification of Letters Patent.

Patented Feb. 27, 191 *7.

Application filed September 21, 1916. Serial No. 121,476.

Toall whom it may concern Be it known that I, LEON GOIDMERS'I'EIN, subject of the Czar of Russia, residing in New York-city, in the county and State of New York, have invented a new and useful Water-Cooled Brake for Vehicles, of which the following is a specification.

My invention refers to water cooled brakes for vehicles such as automobiles, and in particular provides a' brake which may be safely used on a car in cold weather without incrfeasing thereby the attendant danger of freezing.

In water cooled engines there is always present the danger of the water freezing in cold weather. This is partly obviated by using in winter time mixtures having a lower freezing point than pure water, 0. 9. mixture of water and wood alcohol. Another method of protecting the radiator from freezing is that of covering it up so as to save as long as possible the heat in the en-- gine parts. In fact, when a car is left on the street in very cold weather, this is the only way of protecting the water from freezing, the addition of alcohol being effective only in partly heated garages. I

When it comes however to the matter of cooling the brakes, neither of the above methods, the only ones known, can be effectively applied. Additions of alcohol will not prevent the water freezing when the car is left for a longer period on the street at temperatures around zero Fahrenheit, while there is no way known of covering the entire cooling system in such a way as to keep the cooling water around the brakes warm through the heat of the engine. In fact, even were there such a way, it could not be eifective because the amount of heat present in an idle engine is very limited, and would be rapidly dissipated if applied to any extensive area.

In the present invention the problem is solved by limiting the possible zone of freezing to the radiator only, and by providing means for transferring to the radiator all the water used for brake cooling, immediately upon the stopping of the enne. The figure shows the radiator with the cellular cover removed.

Water fromv radiator 1 is taken to the brake cooling system through, pipe 3 so located that the hump of its bend is always above the highest water level in the radiator (indicated by the broken line 22). With the cooling system in operation, 2'. 6. engine runnlng, the water passes'down through the open valve 17 to pipes 5 and 6 which lead to the brake water cooling jackets 7 and 8. Thence the water proceeds to flow, through pipes 9 and 10, to the pan 11.

From pan 11 the water. is taken, by suction, through pipe 12, to acompartment 2 of the radiator made preferably of thin sheet metal and having no direct water or air communication with rest of the radiator. From 2 the water is taken, by pipe 13, to the suction pump 14, and by this pump and pipe 16, delivered back to the radiator. The suction pump 14 is provided with two valves, 23 and 24, so arranged that liquid can flow from 2 to 1, but not back again. These valves may be simple flap valves.

In other words, the pump produces a vacuum in the radiator compartment 2 which spreads to the pan 11, and creates a suction which raises water through the hump in the pipe 3. Hence, as long as the pump is running, 2'. e. as long as the engine 1s running water will circulate through the brake cooling system.

As soon as the engine stops, however, valve 17 closes pipe 3 and opens an auxiliary pipe 4, as shown in the drawing. At the same time the pump 14, driven by the engine, stops. Hence there is atmospheric pressure coming from pipe 4 (so arranged that its outlet is always above the high water level in the radiator) all through the cooling system down to pan 11, and at the same time there is a vacuum in compartment 2; therefore, all the water present in the system will run over into compartment 2 and no new water can come in as valve 17 is shut. There will in that case be absolutely no danger of the brake cooling pipes or pan freezing, as there will be no water in it.

Valve 17 is so arranged that it always keeps closed one of the two pipes, 3 or 4. When the engine is running it is pipe 4 that is kept closed while pipe 3 is open, so that the suction of the pump draws in water while air is kept out. On the other hand, when the engine stops, the valve closes pipe 3 and opens pipe 4: All further water supply is cut off, but air pressure is admitted to drive the water over from pan 11 into compartment 2. There may be a number of ways to accomplish this result of closing or opening of the valve 17. By way of an example, one such method is indicated in the drawing. No claim to novelty in its use is made here, except as part of the present invention.

A conical pendulum 18 is driven from the engine by a belt and pulley 21. When the engine is running, the balls fly apart and draw up the sleeve 19 which pulls on the cord 20 operating the valve, the arrangement being such that in this position the valve hicle brakes having mechanical circulatingmeans, the combination of siphonage means to continue the fluid flow upon the cessation of activity of said mechanical circulating means.

2. In a fluid cooling system for the brakes of motor vehicles, having mechanical circulating means, operated by the motor, the combination of siphonage means to continue the fluid flow, means for changing from the mechanical to the siphonage system, and means actuated by the motor, in stopping, to

control said changing means.

3. In a fluid brake cooling system for motor vehicles, having a radiator, motor operated means for circulating fluid through a path including the radiator and brake, a fluid controlling valve in said path between the radiator and brake, means actuated by the motor to hold said valve open while the motor is in operation and to close it with the stopping of the motor, and a siphonage system also controlled by said valve, to remove remaining fluid from the brake by the movement of said valve in its operation of closing said circulating path.

4. The combination, in a motor vehicle, having a radiator and a brake, of a fluid cooling system whose path includes said radiator and brake, a fluid container in said radiator, and mechanical means, operated by the motor, to pump fluid from said radiator, to said brake, and thence, through said container, back to said radiator.

5. The combination, in a motor vehicle, having a radiator and a brake, of a fluid cooling system whose path includes said radiator and brake, a fluid container in said radiator, and mechanical means, operated by the motor, to pump fluid from said radiator, to said brake, and thence, through said container, back to said radiator, together with means for siphoning fluid from said brake to said container when the motor is idle.

6. The combination, in amotor vehicle, having a brake, of a mechanical fluid flow cooling system forsaid brake, and a siphonage draining system, and motor controlled means whereby said mechanical system functions during the running of the motor, and said siphonage system functions when the motor is idle.

7. In a fluid brake cooling system for motor vehicles, in combination, a. pipe to convey water to said cooling system from the radiator, a pipe leading to the atmosphere, and a valve to keep the air pipe closed when the engine is running, and the water pipe closed when the engine is idle.

8. In a brake cooling system where water i is used as a cooling agent, a combination of two pipes of which one conveys water to the said cooling system from the radiator, and the other leads to the atmosphere, a valve which keeps the air pipe closed when the engine is running, and the water pipe closed when the engine is idle, and a centrifugal governor, driven from the engine, to operate said valve.

9. In afluid brake cooling system for motor vehicles, including a brake jacket, the combination of a radiator, piping to convey the coolingfluid to the jacket, outflow piping to convey the water from the jacket, a container below the level of the brake to collect the cooling fluid, a container in the engine hood, piping to convey the fluid thereto, a ump to produce the suction necessary for t e operation of the fluid circulation, and piping to return the cooling fluid to the radiator.

10. In a fluid brake cooling system including a brake jacket, the combination of a radiator, piping to convey the cooling fluid to the brake jacket, outflow piping to convey the fluid from the brake jacket, a container under the motor hood, piping to further convey the fluid to said container, a pump to produce a vacuum in said container, and means to stop the flow of fluid from the radiator when the engine stops, and at the same time to admit 'air pressure to the brake jacket.

Signed in New York, in the borough of Manhattan, county and State of New York, in the presence of two witnesses.

LEON GOLDMERSTEIN.

Witnesses:

G. T. CARPENTER, F. J. TOLTON.

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