US1474061A - Sprinkler - Google Patents

Description

Nov. 13 1923. HAZ LGM W. H. BAKER SPRINKLER Qriginal Filed April 13, 1917 Z llull lllll ll m .2...

F/G. I Z3 J} j/ A m eflfw 1977020216. Baker Patented Nov. l3, l92i3.

stares WILLIAM H. BAKER, or 'ivronrnnan-aonsnc, cannon.

SPRINKLER.

Application filed April 13, 1917, Serial ToaZZ whom it may concern:

Be it known that I, VVILLIAM H. BAKER, 21 citizen ofthe United States of America, and resident of the city of Montreal, in the .Pr0vince of Quebec and Dominion of Canada, .have .inventedicertain new and useful Improvements in Sprinklers, of which the. following is a full, clear, and exactdescription.

This invention relates to improvementsin sprinklers, andthe object is to provide a simple andefiicient sprinkler, comprising a minimum number of parts. i I

A further object is to provide a sprinkler, whichwill be quick in action and will overcome the difficulty of valves sticking part way open.

Thedevice consists briefly of a body, yoke and valve of any suitable construction, and a valve holding strut preferably of the duck-bill type. The strut comprises apair of members and a holding lever therefor having its long arm buried in one of the strut members. i

In the drawings which illustrate the invention:

Fig. 1 is asideelevation of the sprinkler head, part of the yoke being broken away.

Fig. 2 is a vertical longitudinal section of the strut.

Fig. 3 is a cross sectional view of the strut on the-line 3-3, Figure 1.

Fig. 4, is a plan view of the strut, the solder being removed.

Referring inoreparticularly tothe drawings, 11 designatesthe body of a sprinkler having a yoke .12, a deflector 13 attached by means of {LISCI'GW .14, which alsoservcs to bind the strut in place. The body is provided with a valve 15. The end. of the screw 14: and the valve 15 are provided with conical-101' otherwise suitably shaped depressions 16 arranged axially in line, and designed to receive the pointsl? of the strut members18 and 19. As shownin the drawings, the strut is of the duck-bill. type, the members bearing pivotally on one another at a point 20 slightly out of the axial or pressure line of the head, so that pressure applied to the points 17 tends to separate the extremities ofthemembers. The free end of the member 18 projects beyond the endiofthe memberll), and inthe projecting portion is provided anelongated aperture 21. The. member19 is provided with a deep groove 22 extending from the free end to No. 161,823. Renewed March 31, 1923.

adjacent the point Y17, and from the outer edge nearly through .the member. This groove atits bottom is substantially parallel with the abutting edges of the .members, so that owing to the roughly triangular formation of the member 19, the groove deepens from the free end toward thelfixed end of the member. A holding lever 23is provided having the long arm 24- thereof lying in the i groove 22, and having the short arm 25 thereof offset or hooked so as to pass through the aperture 21 of the member 18 and engagethe remote surface of the member. The aperture 21 is then filled with solder or other fusible material 26, so asto prevent corrosion of the parts. The groove 22 is also filled with solder or fusible material 27 which holds the long arm of the lever securely in place and effects a secure connection between the strut members. It will be readily notedin Figure 2 that the greatest mass of fusible material is located at the extreme end of the lever,'and that this fusible material is enclosed in the greatest mass of metal of the strut. The obvious resultis that themetal at the extreme end ofjthe lever arm is the last to soften, and therefore the lever is entirely freewhen its end is released.

The operation and advantages of the device areapparent. Pressure onthe points of the strut memberstends to separate the ends thereof. The holdinglever 23 is fulcrumed at the extremityof themember 19,

and withits shortarm 25 engage's'the extremity of the member 18. Thus, the

separating action ofthemembers tends to swing the long arm 24 of the lever out of the slot 22. 'This movement is resisted by the fusible material 27. On a rise of ten1- perature,;theextremity of the strut which projects beyond the head and yoke is naturally the first to heat, as it is most ex posed and as the mass of metal issmall in comparison with the inner end. of the strut. Therefore, the fusible material 26 melts and flows out, and also material 27 at the outer end of the slot, leaving only the fusible material at the inner end of the slot holding tlie extremity of the long arm 24.

hen .the tem eratnre of the strut rises sui'liciently, the remainder of the material 2"? softens, and as practically the whole length of thelever islnow free of obstruction, so that the full pressure is exerted on the end, it is obvious that this end will readily tear itself out of the softened fusible Y trated as of the duck-bill type, it will be readily understood that the feature of burying the lever maybe applied to other forms of strut, and also the feature of locating the greatest mass of solder at the end of the lever and at a point Where it is so protected'as to be the last to fuse. It will also be understood that the invention is not limited to the specific details shownyand that various changes may be made therein, such as the transference of the aperture from the member 18 to the lever 23, so that the strut member passes through the lever in place of the lever through the strut member.

Obviously such a change does'not in any way affect the main feature of the invention, which is the quick and absolutely certain action of the device once a certain temperaturehas been reached, and the removal of all material which would tend to delay the quick separation of the parts.

So far no mention has been made ofthe method of forming the parts, and it will be understood that these may be either cast, machined, stamped or pressed, or built up of separate pieces, especially in the case of the member 19.

Having thus described my invention, what I claim is 2 7 i 1. In a sprinkler, a body, a yoke, a valve, and a strut in compression between the yoke and valve holding the latter, said strut comprising a pair of members one having a groove of varying depth, a bearing surface onthe other member and a holding lever engaging at one end with said bearing surface and engaging at the opposite end in said groove, and lever holding material of low fusibility filling the groove above the lever.

2. In -a sprinkler, a body, a yoke, a valve, and a strut in compression between the yoke and valve holding the latter, said strut comprising apair of members of unequal length tapering toward their free extremities, the shorter of said members having a groove in the edge thereof remote from the other member, said groove varying in depth from the free end of the member, a holding lever fulcrumed at the end of said shorter member, and having the longer arm thereof occupying the member groove and the shorter arm thereof operatively engaging the projecting end of the longer memher, and fusible material in said groove holding the lever. V

8. In a sprinkler, a strut comprising a pair of members, one having a groove of varying depth, a holding lever for said strut pair of members, one of them having a re cess, and a reversely curved holding lever operatively engaging said members and having one of its ends located at the bottom of said'recess, and a filling of fusible material in the recess above the extremity of the lever V confining the same in the recess. 7

5. In a sprinkler, a strutcomprising a pair of members, a lever connectingsaid members, one of said members having a recess for the reception of the lever, and a.

filling of fusible material in said recess hold-- ing the lever, the recess being shaped to 7 hold a greater depth of fusible material at the extremity of the lever than at any other point.

6. In a s rinkler a strut com T181110 a 7 V 2.1 pair of members in pivotal engagement ad acent one end, a connecting lever for the members, a body of readilyrfusible material holding said lever, and a recess in one of the members for thereception of said lever and fusible material, said recess being formed to contain the greatest. mass of fusible material in proximity to the greatest mass of metal in the strut and at theex:

'tremity of the lever, whereby the material at the extremity of the lever will be the last to fuse.

7. Ina sprinkler, a strut comprising a pair of members of unequal length in pivotal engagement adjacent one end of the strut, the shorter of said members being grooved on the side remote from'the other member, and the longer member being apertured in its projecting extremity, and a holding lever having one arm thereof passing through the aperture of the longer member and operatively engaging the memher and the longer arm thereof seated in the groove of the other member, and a filling of fusible material in said groove holding the lever. r r

8. In a sprinkler, a strut comprising a pair of substantially triangular members arranged for pivotal movement at adjacent corners, one of said members being recessed on the edge remote from the other member, a holding lever for said members having one of its arms operatively engaging with the unrecessed member and the other arm engaging in the recess of said re-' cessed member, and fusible material holding the lever in the recess. p

9. In a sprinkler, a collapsible strut comprising a pair of members, one of them recessed and the other apertured, a lever holding the strut against collapse and located at one end in the recess of the recessed member, and at the other end passing through and hooking onto the apertured member, and fusible material in the recess holding the lever,'said fusible material engaging the lever through a large part of its length and being so distributed relatively no to the recessed member that the material at the extremity of the lever Will be the last to fuse, whereby the lever Will be held until clear or" fusible material elsewhere throughout its length.

In Witness whereof, I have hereunto set in hand.

y WILLIAM H. BAKER.

Images