US1521362A - Radiator shutter - Google Patents

Description

Dec, 30. 192%? 1,521,362

G. M. DUNLAP RADIATOR SHUTTER Filed Feb. 8, 1924 2 Sheets-Sheet 2 4 e@ :1| 9 @www efmee@C@ c @a @WW @C @a @G @u @G @o @C @@@Qn O G G o G C Q 1@ E Q Patented Dec. 30, 1924.

UNITED STATES GEORGE II. DUNLAP, or CHICAGO, ILLINOIS.

RADIATOR SHUTTER.

Application led February 8, 1924. Serial No. 691,489.

To all lwhom z'v' may concern:

Be it known that I, GEORGE M. DUNLAP, a citizen of the. United States, residing at Chicago, in the county of Cook and State of Illinois, have invented a certain new and useful Improvement in Radiator Shutters, of which the following is a specification.

This invention relates to devices for regulating the flow of air through the radiator of an automobile. Specifically, it is a shutter applicable to the frontend of such a radiator, equipped with means operatable from the dash of the automobile for controlling the different positions of the moving parts of the shutter, and, consequently, the amount of air adlnitted.

The invention consists in means very easily and cheaply constructable and applicable to the front of an automobile radiator, which is very efficient in operation and is not readily liable to get out of order.

Particularly, the invention consists in the application of two plates covering substantially the end of the radiator, equipped with a plurality of air admitting perforations, one of the pla-tes being slidable across the face of the other plate whereby va greater or less number of perforations in the respective plates can be brought into or out of register with each other, thereby controlllng the admission of air to the radiator. The invention further consists in many features and details of construction which will be hereafter more fully set forth in the specification and claim.

Referring to the drawings in which like numerals designate the same parts throughout the several views:

Figure 1 is a front view of a radiator equipped with mechanism of this invention, the parts of the shutter being in the normal full open position in which a maximum quantity of air is admitted to the radiator.

Figure 2 is -a sectional detail view on the irregular line 2-2 of Figure l.

Figure 3 is a rear view of the shutterk mechanism, as shown in Figures 1 and 2, as sold in commerce apart from the radiator.

Figure 4 is a changed position view of the mechanism of Figure 3 in which the shutter is closed.

The shutter mechanism of this invention` designed to be sold as a separate article of equi ment, apart from an automobile and a plied thereto at the will of the user, consists generically of an outer or face plate 10,

second or shutter plate 18, movable between the full open position of Figures 1-3 and the closed position of Figure 4, the two plates 10 and 18 being respectively provided with sets of perforati ons 20 and 22 which register with each other when the parts are as shown in Figures 1 and 2 and which are out ofv register with each other when the parts are in the closed position of Figure 4. The movable or inner plate 18 is normally held in the open position of Figure 3 by suitable spring mechanism, specifically the spring 24, attached at one end to the bolt 15 and at the other end to a lug 26 or plate 18.

In the particular embodiment of the device here illustrated, the spring 24 is so positioned that. it rocks the plate 18 in a clockwise direction until stopped by engagement of the lower side of a notch 28 in the top of the plate on the under side of a washer 30 of bolt 12 and the engagement of the vertical side 32 of a notch 34 in the lower left hand corner of the plate 18 on a washer 36 on bolt 13. The plate 18 is manually movable from the normal or open position of Figures 1-3 to the closed position of Figure 4 through the agency of a cord or cable 38 attached to the lower edge of plate 18 at a point suitably remote from pivot bolt 14, said cord leading thence over suitable pulleys 40 and 42 to handle 44 extending through the dash 46 of the automobile. The lower edge of the inner portion of this handle 44 is provided with suitable notches 48 adapted to selectively lit over the latch plate 50 bordering the perforation 52 in the dash 46 through which the handle member 44 passes. By adjusting selected ones of these notches 48 on the plate 50, the operator can vary the position of the plate 18 between the full open position of Figures .1-3 and the full closed position of Figure 4 to thereby provide varying sized passages through the complete shutter mechanism.

It has been found in actual practice that by the construction described, very close regulation of the amount of air admitted to the radiator can be obtained; that because of the simplicity and small number of parts in the device, there is little, if any, danger of failure in successful operation.

Attention called to the yfact that b y. placing the pivot bolt 14 at one side 0f the plates 10 and 18, specifically at one cornery of the substantially rectangular plate shown, 5 and by providing a large number of per- ' forations 20 and 22 in the respective plates,

' a very fine gradation in the volume of airv admitted through the device is obtained. Having thus described my invention, ywhat 10 I claimasnew and desire to secure'by Letters Patent is:

In mechanism of `thefclass-described, a .pla-te vprovided with a plurality of perfora-A nous@ second parallelv plate pride'ai with corresponding erforatlons registering `in one .position W1th the perforations in the first plate, means at one edge of the plates` thereby' controlling theA aggregate passage` of airwthrough they devlce.

n witness whereof, I have hereunto subi scribed my name. v Y GEORGE M. DUNLAP.

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