US737802A - Spark-arrester. - Google Patents

Description

No. 737,802. PATENTED SEPT. 1, 1903. H. S. WAINWRIGHT.

SPARK ARRBSTBR.

APPLICATION FILED MAY 19, 1902.

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No. 737,802. PATENTED SEPT. 1, 1903.

' H. S. WAINWRIGHT.

SPARK ARRESTER.

APPLIOATION FILED MAY 19, 1902.

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H. s. WAINWRIGHT.

SPARK ARRESTER.

APPLICATION FILED MAY 19, 1902.

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H. S. WAINWRIGHT.

SPARK ARRESTER.

APPLICATION FILED MAY 19, 1902.

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H. s. WAINWRIGHT.

SPARK ARRESTER.

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UNITED STATES Patented September 1, 1903.

PATENT OF ICE;

SPARK-ARRESTER;

SPECIFICATION forming part of Letters Patent No. 737,802, dated September 1, 1903.

Application filed May 19, 1902.

To all whom, it may concern.-

Be it known that I, HARRY SMITH WAIN- WRIGHT, a subject of the King of Great Britain and-Ireland, residing at Ashford, in the county of Kent, England, have invented Improvements in Spark-Arresters, of which the following is a specification.

This invention consists of improvements in locomotive-engines, and has for its object to enable a conical or other tube-like spark-arresting device, (hereinafter called a spark-arrester,) normally located between the blastpipe and the chimney,to be easily and quickly moved, so as promptly to afford access to the smoke-box ends of lire-tubes for cleaning or other purpose, without its being necessary for that purpose completely to disconnect and remove the spark-arrester. This provision for moving the spark-arrester facilitates the use of a short blast-pipe whose discharge-orifice is considerably below the upmost row of fire-tubes, which is an arrangement that in actual practice contributes to economy in coal consumption.

Each of Figures 1 to l, inclusive, of the accompanying drawings shows in vertical section sufficient of a smoke-box of a locomotiveengine and accessories to illustrate my invention by way of example. Fig. 5 is a detail view; and Fig. 6 is a sectional view corresponding to Fig. 1, taken at right angles thereto for the purpose of illustrating the position of the spark-arrester in relation to the chimney, the smoke-box, and the fire-tubes.

In the arrangement illustrated by Fig. l of the drawings the spark-arrester is of telescopic construction,one section being adapted to enter another when access is to be gained to the fire-tubes. The several sections are shown drawn out into position for use. As will be seen, the lowest section a rests on a blower-ring Z) at the upper end of the blastpipe 0, which in this example is of the economical short type already referred to. The upmost section (Z of the spark-arrester is arranged to be capable of movement in a vertical sense and is provided with suitable guides e, which are shown secured to a chimneycone 9, but might be secured to the chimneybase It. \Vhen in its lowest position, as illustrated, it is supported by suitable devices, such as projections f, which rest upon or en- $eria1 No 108,083. (No model.)

gage with appropriate supporting means, which may be, for example, a horizontal grid 2, or an attachment to the chimney-cone or an attachment to the chimney-base h itself. Thelowest section a is held down by fastening devices, such as hook-bolts j, which may, as shown, also serve for securing the blowerring b. Each of the other sections is held down by projections or the like on the section immediately below it.

In order that the spark-arrester may, when required, quickly collapse in an automatic the lowest section is unfastened it will be moved upward by the action of a weight or weights or a spring or springs or equivalent. An arrangement for this purpose comprises a lever 7c, having its fulcruml in a fixed position in the smoke-box. This lever is bifurcated at one end, which is connected with the lowest section a of the spark-arrester in a manner to allow for the angular movement of the lever. The other arm of the lever is provided with a suitable weight on or it may be with a spring or equivalent so applied that it tends con- 'stantly to raise the lowest section of the sparkarrester and if that section be unfastened will raise it and so move all. the sections clear of the fire-tube ends,as indicated by dotted lines. Each section below the top one is shown provided with projections n (whereof there may be three or more) at its lower end to engage and raise the section next above it.

The several sections may be variously constructed. In Fig. 1 they are shown constructed with frames which comprise top and bottom rings 0 and 19, connected by notched or recessed bars q, around which are spirallywound chains 1', located in the notches or recesses of the bars q, whereby they are held in place. The spirally-arranged chains afford inclined surfaces adapted to arrest and throw down sparks and glowing particles, besides causing escaping steam to whirl, while the openings of the links and the spaces between adjacent convolutions of the chains and between the chains and the rings 0 and .19 will allow free passage of gases to the interior of the arrester.

The number of sections in a telescopic spark-arrester may be greater or less than shown, and instead of chains other flexible fashion, means can be provided whereby when metallic material, as thick wires or rods or wire ropes, may be used.

In lieu of making the arrester telescopic, as shownin Fig. l, for the purpose of enabling it to collapse, I sometimes construct it, as shown in Fig. 2, of a number of hoops j of round bar-iron connected together and to upper and lower rings 0 and p by open links 7;, adapted to allow of the collapsing of the arrester under the action of aweighted or equivalent device, such as described with reference to Fig. 1.

According to another arrangement (illustrated in Fig. 3) I connect upper and lower rin 's 0 and 19 together by interwoven open links Z, each of which is contracted somewhat in the middle in order to keep the links mutually in place.

In a further modification (illustrated in Fig. 4) I connect the rings 0 and 2) together by short solid links on and joint-pins n. Fig. 5 shows a portion of the linkage in section and to a larger scale.

Fig. 6 is a view taken at right angles to Fig. 1. and showing the normal position of the arrester shown therein in relation to the base h of the chimney and the fire-tubes r. s is the tube-plate, and t is the opposite wall of the smoke-box.

It Will be noted that all the spark-arresters that I have illustrated are tube-like in form, and it will be understood that any appropriate construction of tube-like spark-arrester may be arranged so as to be readily movable in a manner to afford access to fire-tubes accord ing to my invention, as above set forth.

By the expression tubelike spark-an rester I mean one whose general form is that of a tube whether conical or not and whether it be composed of framework and chains or wire orotherwise constituted so as on the one hand to allow gases to flow from the smokebox through its wall toward the chimney and on the other hand to obstruct the flow of sparks or glowing particles toward the chimney.

It will be obvious that the constructions hereinbefore described may be variously modified. without departing from the essential features of the invention.

WVhat I claim is- 1. In a locomotive-engine, a tube-like openwork spark-arresterlocated in the smoke-box so as to prevent or impede the passage of sparks from fire-tubes to the chimney and adapted to be reduced in length and shifted so as then not to prevent free access to firetubes to which free access would normally be prevented by said arrester.

2. In a locomotive-engine, the combination of a tube-like open-work spark-arrester located in the smoke-box so as to prevent or impede the passage of sparks from fire-tubes to the chimney and adapted to be reduced in length, means for supporting said arrester in a normal position in which it will prevent free access to fire-tubes, and means for guiding said arrester, when reduced in length as aforesaid, upward into a position in which it will not prevent free access to fire-tubes to which it would prevent free access when merely reduced in length as stated.

3. In a locomotive-engine, the combination of a tube-like open-work spark-arrester located in the smoke-box so as to prevent or impede the passage of sparks from fire-tubes to the chimney and adapted by change of position and without dismounting to give free access to fire-tubes to which free access would normally be prevented thereby, means for supporting said arrester in its normal position, and a lever by means of which said change of position in said arrester can be produced.

4. In a locomotive-engine, the combination of a tube-like open-work spark-arrester located in the smoke-box so as to prevent or impede the passage of sparks from fire-tubes to the chimney and adapted by change of position and without dismounting to give free access to fire-tubes to which free access would normally be prevented thereby, means for supporting said spark-arrester in its normal position, means for securing a portion of said arrester in its normal position, and means adapted, on the release of said portion, to produce said change of position.

5. In a locomotive-engine, the combination of a tube-like open-work spark-arrester located in the smoke-box so as to prevent or impede the passage of sparks from fire-tubes to the chimney and adapted by change of position and without dismounting to give free access to fire-tubes to which free access would normally be prevented thereby, means for supporting said spark-arrester in its normal position, means for securing a portion of said arrester in its normal position, and a lever connected to the lowerend of said arrester and adapted to produce said change of position in said arrester on the release of said portion. I

6. I11 a locomotive-engine, the combination of a tube-like open-work spark-arrester located in the smoke-box so as to prevent or impede the passage of sparks from fire-tubes to the chimney and composed of sections telescopically arranged one Within another and adapted by ch an ge of position and without dismounting to give free access to fire-tubes to which free access would be prevented by it in its normal position, and means for supporting said arrester in said normal position.

'7. In a locomotive-engine, the combination of a tube-like open-work spark-arrester located in the smoke-box so as to prevent or impede the passage of sparks from fire-tubes to the chimney and composed of sections telescopically arranged one within another, and a lever whereby telescopic movement can be produced in said arrester so as to give free access to fire-tubes to which free access would normally be prevented by said arrester.

8. In a locomotive-engine, the combination ICO of a tube-like open-work spark-arrester located in the smoke-box so as to prevent or impede the passage of sparks from lire-tubes to the chimney and composed of sections telescopically arranged one within another, means for supporting said arrester in a normal position, means for securing one portion of said arrester in its normal position, and means adapted, on the release of said portion of said arrester, to produce telescopic movement in said arrester so as to give free access to firetubes to which free access would normally be prevented by said arrester.

9. In a locomotive-engine, the combination of a tube-like open-work spark-arrester located in the smoke-box so as to prevent or impede the passage of sparks from fire-tubes to the chimney and composed of sections telescopically arranged one within another, means for supporting said arrester in a normal position, means for securing the lower portion of said arrester in its normal position, and a lever connected to the lower portion of said arrester and adapted, on the release of the lower portion of said arrester, to produce telescopic movement in said arrester so as to give free access to fire-tubes to which free access would normally be prevented by said arrester.

10. In alocomotive-engine, the combination of a tube-like open-work spark-arrester located in the smoke-box so as to prevent or impede the passage of sparks from fire-tubes to the chimney and comprising sections arranged telescopically one within and one below another and adapted by telescopic movement and vertical movement to give free access to fire-tubes to which free access would normally be prevented bysaid arrester, means for supporting said arrester in a normal position, and means for guiding the top one of said sections vertically.

11. In alocomotive-engine, the combination of a tube-like open-Work sparkarrester located in the smoke-box so as to prevent or impede the passage of sparks from fire-tubes to the chimney and comprising sections arranged telescopically one within and one below another, means for supporting said arrester in a normal position, means for guiding the top one of said sections vertically, and a lever for moving the lower portion of said arrester into said top section and moving said top section and said lower portion vertically so as to give free access to fire-tubes to which free access would normally be prevented by said arrester.

12. In alocomotive-engine, the combination of a tube -like open -work spark-arrester located in the smoke-box so as to prevent or impede the passage of sparks from fire-tubes to the chimney and comprising sectionsarranged telescopically one within and one below another, means for supporting said arrester in a normal position, means for guiding the top one of said sections vertically, means for securing one portion of said arrester in its normal position, and means adapted, on

the release of said portion of said arrester, to move the lower portion of said arrester into the top one of said sections and to move said top section and said lower portion vertically so as to give free access to fire-tubes to which free access would normally be prevented by said arrester.

13. In a locomotive-engine,the combination of a tube -like open-work spark-arrester located in the smoke-box so as to prevent or impede the passage of sparks from fire-tubes to the chimney and comprising sections arranged telescopically one within and one below another, means for supporting said arrester in a normal position, means for guiding the top one of said sections vertically, means for securing the lower portion of said arrester in its normal position, and a lever connected to the lower portion of said arrester and adapted, on the release of the lower portion of said arrester, to move the lower portion of said arrester into the top one of said sections and said top section and said lower portion vertically so as to give free access to fire-tubes to which free access would normally be prevented by said arrester.

14. In alocomotive-engine,the combination, in the smoke-box, of a blast-pipe, an openwork spark-arrester arranged so as to prevent or impede the passage of sparks from firetubes to the chimney and comprising a framework composed of upper and lower rings and notched or recessed longitudinal bars, and chain wound spirally around said framework and in the notches or recesses of said bars.

15. In a locomotive-engine,the combination of a tube-like open-work spark arrester located in the smoke-box so as to prevent or impede the passage of sparks from fire-tubes to the chimney and composed of sections arranged telescopically one within and one below another, and each comprising a framework composed of an upper ring and a lower ring and notched or recessed longitudinal bars connecting said rings together, and chain wound spirally around said framework and within the notches or recesses of said bars.

16. In a locomotive-engine,the combination of a tu be-like open -work sparkarrester located in the smoke-box so as to prevent or impede the passage of sparks from fire-tubes to the chimney and composed of sections arranged telescopically one within and one below another, and each comprising a framework composed of an upper ring and a lower ring and notched or recessed longitudinal bars connecting said rings together, and chain wound spirally around said framework and within the notches or recesses of said bars, means for supporting said arrester in a normal position, means for securing the lower portion of said arrester in a normal position and a lever connected to the lower portion of said arrester and adapted, on the release of the lower portion of said arrester, to move the lower portion of said arrester into the top one of said sections so as to give free access to IIO fire-tubes to which free access would normally be prevented by said arrester.

1 7. In a locomotive-engine,the combination of a tube-like open-work spark-arrester located in the smoke-box so as to prevent or impede the passage of sparks from fire-tubes to the chimney and composed of sections arranged telescopically one within and one below another, and each comprising a framework composed of an upper ring and a lower ring and notched or recessed longitudinal bars connecting said rings together and chain wound spirally around said framework and within the notches or recesses of said bars, means for supporting said arrester in a normal position, means for securing the lower portion of said arrester in a normal position, means for guiding the top one of said sections vertically, and a lever connected to the lower portion of said arrester and adapted, on the release of the lower portion of said arrester, to move the lower portion of said arrester into said top section and said top section and said lower portion vertically so as to give free access to fire-tubes free access to which would normally be prevented by said arrester.

18. In a loco1notive-engine,the combination of a tube-like open-work spark-arrester located in the smoke-box so as to prevent or impede the passage of sparks from fire-tubes to the chimney and composed of sections arranged telescopically one within and one below another, and each comprising a framework composed of vertically-arranged bars having metallic material wound therearound, means for supporting and securing said arrester in a normal position,an intermediatelypivoted lever having one end connected to the lower or lowest section of said arrester, and a weight carried by the opposite end of said lever, substantially as described.

Signed at Charing Cross Hotel, London, V. 0., this 28th day of April, 1902.

HARRY SMITH WVAINlVRlGHT.

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