US 1678670 A
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Description (OCR text may contain errors)
July 31, 192s 1,678,670
H. H. CRAWFORD RADIATOR ATTACHMENT Original Filed July 5, 19:16
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Patented July 31, 1928.
HOWARD H. CRAWFORD, F DETROIT, MICHIGAN, ASSIGNOR '10 DETROIT MOTOR AP- 1,678,670 PATENT OFFICE.
PLIQANCE COMPANY, OF DETROIT, MICHIGAN, A CORPORATION OF MICHIGAN.
Application filed July 3. 1916, Serial No. 107,421. Renewed April 11, 1928.
The invention relates to liquid cooling sys tems for internal combustion engines, and it is the object of the invention to obtain a construction which is applicable to installed radiators and will render the same more flexible in operation.
Inthe present state of the art most cooling systems in use in connection with interna combustion engines are non-adjustable, a constant amount of heat-dissipating surface It has therefore been the practice to choose an average size of radiator, or one which will work most r the engine is run.
efficiently at average temperatures at which This results in inefiiciency during extremes in temperature, there being but little radiating surface for warm weather and too'much for cold weather. It is possible to cut down on the cooling in cold weather by placing a shield or other obstruction in front of the radiator, but usually there is no way in which the cooling effect may be increased.
To overcome this defect, I have devised an attachment to radiatorswhich operates, first. to increase the cooling when necessary, and secondly, to decrease the cooling gradually to any degree desired.
In the drawings:
Figure 1 is a front elevation of a radiator to which my improvement is applied;
Figure 2 is a vertical longitud nal section therethrough.
A and B are the top and bottom headers of a radiator of any suitable construction, and C is thecore or radiating surface arranged between said headers. As specifically shown, this core comprises a series of water tubes D extending between the upper and lower headers, and transversely-extending fins E surrounding said tubes.
To-increase the capacity of this radiator, l have provided asupplemental frame F of larger dimensions than that of the radiator,
" and which is adapted to be used in connection with a replacement hood for enclosing the engine. The frame F extends outwar beyond the front face of the radiator and is provided with an opening therein which is of larger dimensions than the opening in which the radiator core is arranged. G is a supplemental water header arranged within the upper portion of the frame F, havin a portion 6* overlapping the front of the which are connected with suitable operating mechanism, such as K, by which they may be simultaneously adjusted to more or less obstruct the open area within the frame F. The operating mechanism may be actuated either manually or by automatic means controlled by a thermostat, such construction not being shown as it forms no'part of the present invention.
With thev construction as thus far described, the additional radiating surface provided by the supplemental headers G and H and tubes I will increase the cooling effect of the radiator so as to be sufiicient lll capacity for the maximum temperatures under which the engine is operated. Furthermore, the increased open area in the frame F over that in the main radiator will act as a concentrator for increasing the amount of air passing through the radiator ume of air passing through the radiator, and
if necessary to completely close the open area. Thus any temperature desired may bereadily obtained, and where automatic controlling means is provided a constant temperature may be maintained under all conditions.
The headers G and H may be suitably connected with the headers of the mainradiator so as to permit circulation of water from one to the other, this, as shown, being accomplished by soldering said supplemental headers to the main headers around apertures L forming connecting passages. The top header may be fitted around the radiator filler tube M, and is preferabl provided with an extension filler tube having a lateral opening P, communicating with the auxiliary header, and its end telescopically engaging the filler tube M.
The construction as described constitutes an auxiliary unit, which as such is attachable to installed radiators, and will erform the double function of increasing e cooling effect where necessary and. of variabl decreasing the cooling to any point desire What I claim as my invention is 1. An attachable unit for a radiator, comprising an auxiliary water header ada ted to overlap the main header of the radiator and embracing the radiator filler tube and an auxiliary filler tube on said auxiliary hegder in alignment with said main filler tu e.
2. In heat radiating means for the water cooling system of an automobile engine the combinatlon' of an inlet header and inlet pipe connection therefor communicatingwith said header at a substantial distance below the top thereof, a discharge header spaced from said inlet header, heat ra'diating water passages of relatively small cross section directl connecting said inlet and discharge hea ers, an upper chamber above and in communication with said inlet and discharge headers, the said upper chamber communicating with said discharge header entirely independently of said radiating wa-.
ter passages, a discharge connectiongscommunicating with said discharge header at a' point adjacent the bottom of said heat radiating means, and a filler tube extending upwardly from said upper chamber.
In testimony whereof I aflix mysignature.
HOWARD H. CRAWFORD.