US2558620A

US2558620A - Radiator cap

Info

Publication number: US2558620A
Application number: US87513A
Authority: US
Inventors: Lisota Edward
Original assignee: Individual
Current assignee: Individual
Priority date: 1949-04-14
Filing date: 1949-04-14
Publication date: 1951-06-26
Anticipated expiration: 1968-06-26

Description

June 26, 1951 E. I lsorA 2,558,620

RADIATOR CAP Filed April 14, 1949 INVENTOR ATTORNEYS Patented June 26 1951 Wirte-STATES PATENT OFFICE RADIATOR CAP Edward Lisota, Patterson, Calif. Application April 14, 1949, Serial No. 87,513

1 Claim.

This invention is directed to, and it is an object to provide, an improved radiator cap for motor vehicles. v

' Another object of the invention is to provide a radiator cap which permits the radiator to be filled with water without removing the cap.

An additional object of the invention is to provide a radiator cap, as in the preceding paragraph, which is arranged to prevent the operator -upon lling the radiator-from being burned by contact with the hot cap or by steam blowing back from the radiator when the water in the latter is boiling and steaming.

A further object of the invention is to provide a radiator cap, characterized as above, which is designed for ease and economy of manufacture.

A further object of the invention is to provide a practical and reliable radiator cap, and one which will be exceedingly effective for the purpose for which it is designed.

These objects are accomplished by means of such structure and relative arrangement of parts as will fully appear by a perusal of the following specification and claim.

In the drawings:

Fig. 1 is an elevation of the cap detached.

Fig. 2 is an enlarged sectional elevation of the cap as in use and with the valve in its normal closed position.

Fig. 3 is a similar view but shows the cap with the valve opened by a water feed nozzle for nlling the radiator,

Referring now more particularly to the characters of reference on the drawings, the radiator cap is indicated generally at I, such cap including, as usual, a depending peripheral coupling collar 2 adapted for releasable connection with the annular locking flange 3 on the upper end of the ller neck 4 of the radiator. A conventional sealing gasket G is normally engaged between -the cap I and annular locking ange 3.

A vertical, tubular stem 5 extends in slidable relation centrally through the cap I, and through the central bore 6 of a rigid annular valve seat 'l aflixed to the cap I mainly on the underside of the same and in downwardly facing relation.

`At its lower or inner end the tubular stem 5 is formed with an enlarged, horizontal disc valve 8 having a gasket 9 on top thereof; such disc valve 8 normally abutting the annular valve seat 'I in closed relation, as in Fig. 2.

The disc valve 8 is yieldably maintained in such normal closed position by a loaded helical compression spring Ill which surrounds the tubular stem 5 between the top of the valve seat 1 and an enlarged radial flange I I formed on the upper end of said stem 5.

An enlarged cylindrical head I2, of resilient material such as relatively soft rubber, surrounds the upper portion of the stem 5, and the radial ange II is embedded in such head intermediate the ends thereof.

The head I2 is funnel-like and includes a downwardly tapering hole I3 which leads from the upper end of said head to communication with the bore of the stem 5.

Below the radial ange I I the head I2 is annularly recessed, as at I4, for the reception of the helical compression spring IU. Radially outwardly of the spring IU the head I2 depends in the form of an annular skirt portion I5; the lower end of such skirt portion normally being spaced a distance above the top of the cap I.

At its lower end, and immediately above the gasket 9, the stem 5 is formed with a plurality of laterally opening ports I6; such ports being closed by the annular valve seat 'l when the parts of the device are in their normal positions, as in Fig. 2.

When it is desired to ll the radiator with water, a water feed nozzle, indicated diagrammatically at I 1, is engaged with a tight frictional nt in the tapered hole I3 of the head I2 and the nozzle I'l is then pressed downwardly causing the head I2 and the stem 5 to move downwardly. With such movement the horizontal disc valve 8 moves down from the valve seat I to an open position, as in Fig. 3, wherein the ports I5 open into the filler neck 4 of the radiator whereby water may then flow from the nozzle I l through stem 5 and out of ports IS into said ller neck 4.

It is thus possible to ll the radiator with water without the necessity of touching or removing the cap I. This is extremely advantageous in an instance where the water in the radiator is initially low, boiling, andfsteaming; the device making it possible to fill the radiator without subjecting the operator to possible burning by the steam. With the described radiator cap it is impossible for steam to escape during the filling operation; This is due to the fact that the nozzle I'I makes a tight fit in the tapered hole I3 of the head I2, and additionally the annular depending skirt portion I5 of said head abuts the top of the cap I during the lling operation. Such abutment of the skirt portion I5 with the top of the cap I, as in Fig. 3, assures that no steam can escape along the stem 5 and thence laterally outwardly above the cap.

The described radiator cap is a very practical and reliable device for the intended purpose; the design of such cap being such that it can be manufactured simply and economically.

From the foregoing description it will be readily seen that there has been produced such a device as substantially fulfills the objects of the invention as set forth herein.

While this specification sets forth in detail, the present and preferred construction of the device, still'v in practicesuch deviations from such detail may be resorted to as do not form a departure from the spirit of the invention, as dened by the appended claim.

Having thus described the invention, the following is claimed as new and useful and upon which Letters Patent are desired:

In a radiator cap, an upstanding stem slidably extending through the cap, a horizontal disc valve on the lower end of the stem, a port in the stern directly above the disc valve, an annular valve seat` on the cap, a radial flange on the stern above the cap, a helical compression spring surrounding the stem below saidjradial flange and norma'lly but yieldably urging the stem upward toA close the valve against the seat, and a funnellike head of resilient material on the stem and in communication therewith; the radial flange being embedded in said head and the latter being adapted to receive a water feed nozzle therein in close tting relation; there being an annular depending skirt portion on the head about the stem and spring, said skirt portion having a wide relatively fiat under surface, such surface being normally spaced above the cap but moving into face to face relation therewith uponvdownward motion of the stem caused by pressure of the nozzle on said head.

EDWARD LISOTA.

REFERENCES CITED The following references are of record in the le of'y this patent:

UNITED STATES PATENTS Number Name Date 1,537,254 Mills Mayr 12, 1925 1,755,316 De Alcocer Apr; 22,1930

` 1,833,833 Ferrier ,Nov. 24', 1931 2,328,327 Cobb Augal, 194