US2388836A - Flushing apparatus - Google Patents

Description

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Patented Nov. 13, 1945 UNITED STATES PATENT OFFICE Y v '2,388,833 I FLUsHING ArPARATUs V William 3. Dunn, Lake charles, La. Application September 1, 1943, Serial No. 500,857

' 'z claims. 001.1345169) This invention relates to means for flushing the radiators of automotive vehicles and the like.

A: main object of the invention is to provide means whereby an improved ushing action is obtained by imparting a surging or agitating eie'ctv to the flushing uid while the latter is in flow through the radiator and Without the necessity ofdismounting the radiator. How this object may be obtained will be described with reference tothe accompanying drawing in which: l Figure 1 shows in elevation a radiator in process of flushing in accordance with the invention;

Figure 2 is an axial section on an enlarged Vscale of a flushing device which appears in Fig# ure 1;

connections I 2 and I3 through which the radiator is normally connected into the circulatory system The hose sections which normally connect the radiator connections and the engine are removed in Figure 1, the top connection is closed as by a plug I d,v and the bottom connection has associated therewith a ilushing device I5 in accordance with the invention.

This device comprises an inner tubular portion I6 which can be of any suitable material. Conveniently, it may be constituted by a section of Just outwardly of its end I'I portion I6 has connected into it a hollow L-shaped fitting I8 whose branch portion I9 is equipped with a swivelled hose connector 20. Working in the cylindrical portion 2| of the tting is a valve 22 carried on a stem 23 which is threaded in an end bushing 24. In the position shown in Figure 3 the valve 22 blocks the portion 2I in advance of the branch I9, but by threading the stem outwardly the branch can be fully freed for ilow. Toward its outer end portion I6 is provided with lateral openings 25.

Embracing the inner tubular member I6 is an outer tubular member 26 which may also be a section of radiator hose, there being a substantial ow clearance ZIbetween the two portions. 'Ihe outer end of portion 26 has fixed thereto aV c10- sure cap 28 which carries a piston 23 by means of a rod 30, the piston being adjacent the inner end 3l of the outer portion and being substantially smaller than the inner diameter ofthe inner portion so that a substantial ilow clearance 2 9 is present between the two.

With the device I5 applied tothe lower hose connection I3 in the manner shown in Figure 1 and valve 22 in the position shown in Figure 3, water is continuously run into the lling neck I`I from a hose 32. The plunger constituted by the outer portion 26 and the piston 23, or either of them, is now reciprocated, but without such an extent of' outward movement as to cause the openings 25 to be uncovered by the outer portion 26. During this time outow from the radiator continues between the piston 29 and portion I6 andbetween the latter and portion 26 although the plunger means imparts a surging or agitating eect to the liquid ilowing through the radiator with the result that accretions are loosened `and carried downward by the flow. After several re- Yciprocations, portion 26 is moved outwardly sufradiator to drain vmore freely for a period.

Splash from the openings 25 is restrained bya tubular guard 33 xed around the inner endr of portion 26. The reciprocating and drainagev actions are repeated as many times as necessary.

Under some conditions the cleaning operation can be facilitated by introducing flushing fluid through the lower hose connection, and in this case the hose 32 is engaged with the tting I8 through the coupling 26 and valve 22 is retracted so as to permit free now to the interior of portion I6, portion 26 being held substantially in the relation shown in Figure 2. This will usually loosen a badly clogged radiaator and thereafter the hose is transferred to the lling opening and the agitator used as above described.

The purpose of plugging the upper hose connection is, of course, to prevent wasting of the ushing fluid through the engine jacket and this result, of course, can be secured otherwise. For example, the upper connection can be pinched, or the lower radiator hose can be pinched or plugged after detachment from connection I3 so as to prevent flow through the engine jacket. Or the radiator cap can be left in place and the flushing hose slipped over the top connection. The invention is, of course, not limited to the procedure and apparatus which have been deance between said tubular portions being in communication with the inner tubular portion at the end thereof adjacent the closingv means vfor escape of the iiushing uid through said clearance.

2. A device for use in flushing a ing a, top opening for a flushing fluid and having a bottom connection, said device comprising an inner tubular portion engageable with said connection, said tubular portion being open from end to end for flow of the iiushing fluid therethrough, and an outer tubular portion reciprocable over said inner portion with flow clearance betweenv the two portions, and means closing the outer end "of said outer portion, the iiow clearance between said tubular portions being in communication with the inner tubular portion at the end of the latter adjacent the closing means for escape of theY flushing iiuid through said clearance, said inner portion having a lateral escape opening outwardly of the normal reciprocating range of said outer portion. l

3. A ,device for use in flushing a radiator -having a top opening for a flushing fluid and having -a bottom connection', said device comprising an inner tubular portion engageable with said connection, said tubular portion being open from end to end for iiow of the flushing fluid therethrough, and an outer tubular portion reciprocable over Vsaid inner portion with iiow clearance between the two portions, means closing the outer end of said outer portion, the ow clearance between said tubular portions being in communication with the inner tubular portion at the end ofthe latter adjacent the closing means for escape of the flushing fluid through said clearance, and a valve-controlled hose connection into said inner portion inwardly of the normal reciprocating range of said outer portion.

radiator hav- 4. A device for use in ushing a radiator having a top opening for a ushing fluid and having a bottom connection, said device comprising an inner open-ended tubular portion engageable with said connection, and an outer tubular portion reciprocable over said inner portion with ow clearance between the two portions, means closing the outer end of said outer portion, and a piston carried by said outer portion and working in said inner portion with ow clearance between it and saidmner portion- 5. A device for use in ushing a radiator having a top opening for a iiushing fluid and having a bottom connection, said device comprising an 'inner open-ended tubular portion engageable with said connection, and an outer tubular portion reciprocable over said inner portion with flow clearance between the two portions, means closing th'e outer end of said outer portion, and a piston carried by said outer portion and working in-said inner portion with flow clearance between it and said inner portion, said piston being ad'- jacent the inner end of said outer portion. y

6, A device for use in lushinga radiator having a top opening for a flushing fluid and having a bottom connection, said device comprising an inner open-ended tubular portion engagea-ble with said connection, and an outer tubular portion reciprocable over said inner portion with flow clearance between the two portions, means closing the outer end of said outer portion, said inner 4portion having a lateral escape opening outwardly of the normal reciprocating range of said outer portion, and a piston carried by said outer portion and working in said inner portion with flow clearance between it and said inner portion-said piston being adjacent the inner end of said outer portion. v

7. A devicevfor use in flushing a radiator having a top opening for a ushing uid and having a bottom connection, said device comprising` an inner tubular portion engageable with said connection, an outer tubular portion surrounding ,said inner portion with flow clearance between the two portions, means closing the outer' end of said outer portion, a lateralopening'in said inner portion connecting the interior of said inner portion with said clearance, and a piston in said inner portion reciprocable past said lateral opening. l

WILLIAM J. DUNN.

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