US1303393A - re-nner - Google Patents

Description

C. A. AND E. A. RENNER.

SPARK ARRESTER.

APPLICATION FILED DEC. 10. I918 2 SHEETS SHEET 1.

mud e 454 :0122 4 Patented- May 13, 1919.

C. A. AND E. A. RENNEB.

SPARK ARRESTER.

APPLICATION FILED DEC. 10. 19.18. 1,303,393.

Patnted May13, 1919.

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UNITED STATES PATENT CLAUDE A. RENNER AND EDWIN A. RENTNER, 0F PERI (AS1111, PENNSYLVANIA.

SPARK-ARRESTER;

To all whom it may concern Be it known that we, CLAUDE A. Rnnnnn and EDWIN A. RENNER, citizens of the United States, residing at Perkasie, in the county of Bucks and State of Pennsylvania, have invented certain new and useful Improvements in Sp-ark-Arresters, of which the following is a specification.

This invention relates to spark arresters, and more especially to those adapted for application to smoke stacks on railway locomotives, and the object of the same is to produce a smoke arrester of this type which is capable of being folded backward by the engineer so that the locomotive may pass through a tunnel or under a low bridge.

With this general end in view, the invention consists in the details of construction of the spark arrester itself and the mechanism for supporting it pivotally upon a locomotive boiler. The invention also comprises a special form of receptacle into which the soot is delivered, and a pivoted spout leading into said receptacle. The invention also comprises details hereinafter more fully described and claimed, and shown in the drawings wherein- Figure 1 is a side elevation of the forward portion of a locomotive boiler with this improved smoke arrester on the same and a sectional detail of the cabwith the actuating mechanism therein.

Fig. 2 is a sectional view through the stack and the hood receptacle.

Fig. 3 is a perspective detail of the receptacle and its spout. s

Fig. 4 is a front elevation.

The boiler B leads forward from the cab C and near its front end it has astack S restricted tunnels without striking. There.

fore, it-is impossible to superpose upon the stack any considerable structure for gathering or arresting the sparks, because it ,willhit the overhead objects. Broadly speaking our invention contemplates the employment of a hood normally disposed above the stack,

but capable of being folded back onto the top of the boiler so that it will not possibly strike anything overhead. 1

Specification of Letters Patent.

Patented May 13 1919.

Application filed December 10,1918. Serial N 0. 266,099.

1 Coming now to the details of construction as set forth in the drawings, the hood 1 has a sheet metal body which is curved transversely over the to as seen in Fig. 4 and also curved longitu inally as seen in Fig. 1, preferably by being made in a plurality of members 2, 3, 4, connected together on oblique lines. Its bottom 5 may be curved transversely, and at its rear end this bottom plate nearly meets the rear end of the top plate 6 so as to produce a reduced outlet 7. The inlet is of ample sizea's indicated by the brace and the numeral 8 in Fig. 2, and in the normal position of the hood, this inlet overlies the stack S. A baflie or plate 9 practically closes the front end of the front member 2, whereas the top of the intermediate member has a small outlet 10 for smoke, theoutlet being protected by aninterior or b'afiie 11 to prevent sparks from rushing out the outlet and causingthemto pass through the member 4 out the outlet opening 7 at the rear end of the hood. Goacting with the hood described above is what we call a spout shaped somewhat like a funnel. It is broadly indicated by-the reference numeral 15, and it tapers from top to bottom and is made of sheet metal like the hood. Its larger upper end 16 underlies the outlet end of the spout and is provided with a forwardly projecting lip .17 hooked upward at its extremity as at 18 to loosely engage under a rib 19 across the bottom of the hood, thereby connecting these elements in such manner as to permit a certain relative motion between them as described below.

The receptacle broadly indicated by the numeral 20 is mounted directly upon the boiler Band has a door 21 in one side through which the accumulations may be removed. It is a box-like structure also by preference of sheet metal, and in its top and rear is a large channel 22 across whose forward end extends a rod or bolt 23 upon which the funnel 15 is pivotally mounted.

When the rod stands upright as seen in Fig.

2, the cinders coming through the hood pass down through the spout and into the receptacle, wherein they may be collected by any suitable means and from which they are withdrawn from time to time through the door 21. When this improved spark arrester is not in use, however, the hood is drawn to the rear as indicated in dotted lines in Fig. 1 and this obviously swings the spent over tothe rear on its pivot 23 so that otal connection of rib 19 with the lip 17 permits the respective movements of the'two elements Without their becoming disengaged, and therefore, when the hood is swung back to its active position as shown in Fig. 1, the spout'is elevated and again ready for work.

While any suitable means may be employed for supporting the hood, we prefer to mount'it on a pluralityof rods, and two on eachsid'e will answer. Each is pivoted at 30 at itslower end on an ear 31 on the boiler B, and each supporting element is made of a single rod extending upward through a coiled spring 82-and connected with the upper end 'or coil thereof and a double element 83 passing 1 down through the spring and connected a-t'its lower end 34 with the lower end thereof. The upper end or bend of this double elementis in turn connected with an ear 35 atthe side of the'hood. By preferencewe employ-one of these supports at the front and anotherat'the rear and two more on the other side as shown in Fig. 4, and theirpurpose is to support the hood-in such manner that it will operate as described above, while yet drawing it downward with yielding 'force onto the top of the'stack as showIr'in-Fig. 2. When now the engine is laboring andj the' smoke is driven with force up thestack, the-hood may yield as the springs permit, while yet" it will not be blown oflthestack or dislodged from its proper place;

The actuating mechanism for swinging this device into place and out of place is composed mainly of a lever 40 located within the cab C and having a thumb-latch mechanism '41, and a rod 42' connecting this lever with a rod 43 whose lower end is pivoted at 44 in an ear 45 on the'boiler B. In'fact, we prefer to usetwo of these rods,

' the second'one numbered. 43, beingshown in Fig; 4, and the two rods are connected by a cross bar 46 asseen. At its upper end each rod slidesthrough aguide 47 carried by the hoodrl and maybe threaded as shown in Fig. 1,' and on the'threads is'a nut 48 beneath the guide-so as to limit the descent of the hoodYunder the influence of the several springs 32, while yet'permitting the hood to rise under the pulsation referred to above.

When nowthe lever 10 is moved, the rod 42 draws on the-swinging rod- 43 which stands over its'pivotal support 44, and its upper end moves the-guide 47 to the rear so that theentire hood is swung over to the position shown in Fig. 1 in dotted lines. Then the locomotive can pass underthe lowest bridge withoutstriking the spark arrester and after it 'has-passed-the-engineer can restore the hoodto the position shown in full lines. While we have -disclosed-this construction for altering the positionof the; spark arrester; we do not'wish' to belimited thereto.

The foregoing description and the drawings have reference to what-may be considered the preferred, or approved form of our invention. It is to be understood that we may make'such changes in construction and arrangement and combination of parts, materials, dimensions, et cetera, as may prove expedient and fall within the scope of the appended claims.

Having described our invention we claim:

1. In a spark arrestcr for locomotives, the combination with a hood substantially semi-circular in side elevation and its bottom having an inlet at the front end and an outlet at the rear end; of two hairs of pivotal supports connecting said hood with the boiler and permitting its movement forward to throw its inlet over the stack or rearward out of such position, manually operable means for moving the hood, a receptacle under its outlet opening, and a funnel connecting the rear end of the hood with the receptacle, for the purpose set forth.

2. In a spark arrester for locomotives, the combination with a hood substantially semicircular in side'elevation and having its bottom closed except for a large inlet opening at the forward end and a small outlet opening at the rearward end; of pivotal supports for'sustaining-this hood with its inlet end over the stack and its outlet end in rear thereof and directed downward, a receptacle on the boiler beneath said outlet end, a plurality of rods pivoted at their lower ends on the boiler and pivotally connected at their upper ends with the hood, each rod being in two members connected by springs tending to draw the hood normally downward, another pair of rods pivoted at their lower endson the boiler, guides on the sides of the hood through which these rods pass, and actuating mechanism at a distant point connected with these rods, for the purpose set forth.

3. In a spark arrester for-locomotives, the combination with a hood having its top curved to the rear and its bottom provided with an opening at the front and an outlet opening at-the rear end, a smoke outlet in the top of the hood protected by a bafile plate, and a plurality of supports pivoted at their lower ends on the locomotive boiler and at their upper ends to the hood; of

with an opening at the fi'ontand an outlet opening at the rear end, and a plurality of supportspivo'ted at their lowerends on the locomotive boiler and at theirupper-ends to the hood; of means for swinging the hood on its supports, a receptacle adapted to be mounted on the boiler in rear of its stack, the top of the receptacle having a channel opening out its rear end, and a spout'v ivhose lower end; is pivoted in the receptacle and whose body is adapted to rise therefrom and loosely engage the outlet end of said hood, as described. a

5. In a'f.-spark arrester for locomotives, the combination with its hood having la top curved to the rear and its bottom provided. with an inlet opening at the front and an outlet opening at the rear end, and a plurality of supports pivoted to the hood; of

means for swinging the hood on ts supports, a receptacle adapted to be mounted on the boiler, a spout pivoted at itslower end within the receptacle and with its larger upper end embracing the outlet end of the hood having a lip projecting forward and bent upward beneath said hood, anda rib under the hood engaging said lip, as described.

6. In a spark arrestei for locomotives, the

combination with a hood arched to the rear from the stack and having an inlet opening fitting over the mouth of the stack and a reduced outlet at its rear end, a rocking spout whose upper end coacts with said outlet end for receiving the sparks, and a receptacle in which the lower end of the spout is pivoted; of two pairs of rods pivoted at their lower ends on the boiler and at their upper ends to the sides of said hood, a pair of rods pivoted on the boiler and with their upper ends extending alongside the hood, guides on the hood within which said upper ends are loosely mounted, cross bars connecting these rods, a rod connected with one of the rods and leading rearward to the cab, and actuating mechanism in the cab attached to this rod.

In testimony whereof we afiix our signatures in presence of two witnesses.

CLAUDE A. RENNER. EDWIN A. RENNER. Witnesses:

EDWIN J. RENNER, m HARRISON H. LANDIS.

Copies of this patent may be obtained for the cents each, by addressing the Gommissioner of Patents, Washington, D. 0.

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