US2207285A

US2207285A - Nozzle

Info

Publication number: US2207285A
Application number: US239646A
Authority: US
Inventors: Edward W Chapman; Virgil A Brunson
Original assignee: BLACKMER PUMP CO
Current assignee: BLACKMER PUMP CO
Priority date: 1938-11-09
Filing date: 1938-11-09
Publication date: 1940-07-09
Anticipated expiration: 1957-07-09

Description

July 9, 1940. E. w. CHAPMAN ET AL 7,285

' NOZZLE Filed Nov. 9, 1938 .A T TORNEYS.

Patented July 9, 1940 when I STATES Edward W. Chapman and Grand Rapids, Mich.,

2,207,285 NOZZZMLE Q Brunson, assignors to Blackmer;

Pump Company, Grand1Rapids', Mich., a corporation of Michigan Application November 9, 1938, 'SeriallNo. 239,646

1 Claim. (01. 2121441,}

The present invention relates to nozzles, and. more particularly to nozzles adapted for connection to fluid supply hoses.

The primary objects of the invention are to provide a nozzle having a cap adapted to seal the discharge end thereof except when fluid is passing therethrough and thus to prevent the entrance of dirt or other foreign matter into the nozzle and further to prevent spilling of the fluid; to provide novel means for normally tensionally maintaining said cap in sealing position, said means being of such character that the same may be assembled on the nozzle through the discharge end thereof; and, toprovide such a nozzle and cap therefor which is efiicient in use, convenient in assembly and economical in manufacture.

An illustrative embodiment of the invention is shown in the accompanying drawing, where- Figure l is a longitudinal central sectional View through a nozzle embodying the invention;

Figure 2 is an enlarged sectional view of parts thereof on line 2-2 of Figure 1;

Figure 3 is an enlarged sectional view of other I parts thereof on line 3-3 of Figure 1;

Figures 4, 5 and 6 are fragmentary longitudinal central sectional views of the discharge end of the nozzle and parts adjacent thereto, these views showing successive steps in the assembly of the cap and spring tensioning means therefor onto the nozzle; and

Figure 7 is a sectional view on line 1-1 of Figure 6.

Referring then to this drawing in' which like parts of the device are designated by the same numerals in the several views, the structure shown therein comprises an annular nozzle I0 having a horizontally disposed rear portion ll adapted for coupling to a hose (not shown) and a reduced and downwardly inclined front ordischarge portion l2.

The extreme rear end of the nozzle is externally screw threaded to receive the enlarged internally screw threaded front portion I3 of a coupling member 14 whose rear portion I5 is likewise internally screw threaded to receive the coupling element of a hose.

A fine wire screen or filter I6 is mounted on the forwardly extending annular flange I! of a ring l8, and this ring I8 and a gasket I9 are securely held between a flange 20 on the coupling member 14' and the rear end or butt 2| of the nozzle. A hook 22 integral with the nozzle l0 provides a convenient means for hanging the nozzle when the same is not in use.

The discharge end 23 of the nozzle is fitted with a cap 24 which is normally tensionally held as hereinafter described in sealing engagement with this discharge end 23 of the nozzle and the cap 24 is movable outwardly under pressure of the fluid to its broken line position shown in Figure 1 thus permitting the fluid to escape. The caps reduced portion 25 threadedly receives the outer end of a bolt 26 which passes through an elongated central aperture 21 in a non-circular bridge 28, which bridge seats against an internal shoulder 29 integralwith the nozzle and near the discharge end thereof. A coiled expansion spring 30 circumscribing the bolt 26 bears at its opposite ends respectively against the bridge 28 and the head 3! on the bolts inner end. A nut 32, the purpose of which will hereinafter more fully be explained, is threaded on the bolt 26 between the bridge 28 and the cap 24. 7

It will be seen that the coiled expansion spring 30 tensionally holds the bridge 28 against the nozzles internal shoulder 29 and also maintains the cap 2 3 in sealing engagement with the discharge end 23 of the nozzle. Pressure of fluid passing through the nozzle is sufficient to overcome the pressure of the spring 30 so that cap 24 is unseated and the fluid is permitted to escape.

Inasmuch as the parts just described must ordinarily be assembled through the discharge end of the nozzle, and inasmuch as the bridge 28 is wider than the discharge opening 23 of the nozzle, assembly presents something of a problem. The present invention however includes a method for so assembling the parts, and the several steps in the assembly are illustrated in Figures 4-7 inclusive.

The first step in assembling the parts is to' pass the bolt 26 through the coiled expansion spring 30 and the elongated aperture '21 in the bridge 28. Nut 32 is next turned onto the bolt, and an elongated longitudinally internally threaded key 33 is turned onto the bolts extreme end. These elements are then inserted into the discharge end of the nozzle with the bridge turned angularly to clear the nozzlesinternal shoulder 29 as best seen in Figure 4.

. 50 The bridge having cleared the shoulder, the

key 33, bolt 26 and nut 32 are drawn outwardly to their positions shown in solid lines in Figure 5 and the bridge seats against the shoulder 29. A holding tool 34 having a slot 35 is next interposed between the nut 32 and the end of the nozzle, whereupon the parts are permitted to retract under the action of the coiled spring 30 to their positions shown in broken lines in Figure 5, and the nut 32 contacts the holding tool 34 thus restraining the nut and bolt against further retraction inwardly by the spring 30.

After this has been accomplished, key 33 is removed from the bolts end and the cap 24 is turned onto the bolt as indicated in Figure 6. Finally the holding tool 34 is removed so that the cap is drawn inwardly by the action of spring 38 into sealing engagement with the discharge end of the nozzle.

It will thus be seen that a nozzle and. cap therefor have been provided which are efiicient in use and convenient in assembly and while but one specific embodiment of the invention has been herein shown and described, it will be understood that certain details of the construction shown may be altered or omitted without departing from the spirit of this invention as the same is defined by the following claim.

We claim:

In a device of the class described, an annular nozzle provided with an internal shoulder thereinnear the discharge end thereof, a cap adapted to seal the discharge end of said nozzle, a bridge adapted to seat against said internal shoulder and having an aperture therethrough, a bolt inserted through said aperture having a head on its inner end and having its outer end threaded in said cap, a coiled expansion spring circumscribing said bolt and bearing at its opposite ends respectively against the bolts head and the bridge, and a nut threaded on said bolt between the bridge and the cap.

EDWARD W. CHAPMAN. VIRGIL A. BRUNSON.