US1355761A - Automatic spark-arrester - Google Patents

Description

A. D. JONES.

AUTOMATIC SPARK ARRESTER.

APPLICATION FILED JAN-23.1920.

1,355,761. Patented 00u.12,1920.

2 SHEETSSHEET I.

,lN V PINTO A lllel'l D. tT072195;

A. D. JONES.

AUTOMATIC SPARK ARRESTER. APPLICATION FILED mus. 1920.

1,355,761. Patented Oct. 12,1920.

2 SHEETSSHEET 2.

, [NV PINTO R A lbert D. fines 4L. 5 aw T To aZZ whom it may concern:

UNITED STATES PATENT OFFICE.

ALBERT I). JONES, 0F QUINCY, CALIFORNIA.

AUTOMATIC sPA mARaEsTEn.

is it known that I, ALBERT D. ONES, a citizen of the United States, residing at Quincy, in the county of Plumas and State of'California, have invented new and useful Improvements in Automatic Spark Arresters, of which the following is a specific'ation.

This invention relates to spark arresters.

The different types of spark arresters known and used have been such that it required manual means for lowering or raising the spark arrester in order to give a proper draft to the engine in case the same had not H been runn ng and it was desired to bring up the steam. In this manner many times the spark arrester was left in its off position after the steam had been brought up and the engine started, thus permitting-large sparks to fly from the stack and causing fires. Also, in the different types of spark arresters heretofore known and used, the screen members disposed over the stack have usually been vof such a mesh that large enough sparks could be forced therethrough which would hold their fire until they reached the earth. andthus causing damage. This is true from the-fact that in case smaller mesh wire for the'screen members was used, the screens would become clogged and would often have to be cleaned before they could properly perform their intended function. V I r It is an object of this invention to provide a sparkarrester utilizing-two screen members'disp'osed over the topof the stack and arranged tobe brought to an open or closed position, the open position representingthat the screens are not disposed over the outlet of the stack and the closed position representing the disposal of the screen members over the outlet of the stack; and also to bring about this operation automatically with the starting and shutting down of the engine, respectively. 7 i It is also an object of the invention to" provide a spark arrester as above character. ized in which the larger sparks as they ascend the stack are thrown against the lower screen member and then if of too large a size are thrown therefrom to travel in a circuitous path at theend of which they will be again thrown against this lower screen member and so continued until these I sparks become fine enough to pass through Specification of Letters Patent;

, the said member, after which they a e broken again through a finer inesh screen member and then to the atmosphere. In this way any large spark has been pulverized before it reaches the atmosphere and therefore no danger of fire from'the same is'presented. T

It is the general object of the invention to I I provide such a device as above characterized 'which will be lnexpenslve to manufacture and simple in its construction. With the Patented Oct. 12, 1920.-

Application filed January 23, 1920. Serial No. 353,495. v i i above and other objects in view the invention consists of the novel features of construction, combination and arrangement of 7 parts as illustrated in the drawings, of which; v

Figure l is a side elevation.

Fig. 2 is a vertical central sectional view 'taken at right angles to Fig. 1.

Fig.3 is a vertical central sectional view taken at rightangles to Fig.2 and showing the open position of thescreen members. I

Fig. 4 is a view similar to Fig. 3 and showing the closed position of the screen members.

Referring. to the drawings in detail, 10, indicates the usual breeching, 11 the stack, 'and 12 a stub stack or in this instance," the casing for the spark 'arr'ester. The upper end "of the stub stack' l2 isfianged inwardly and downwardly forming'the lipv 13, and its lower end is reduced as at'l l, the reduced end being adapted to slide over the 18. .One end of the shaft is extended as indicated at 19, the purpose of which will later appear; Centrally of this shaft is mounted-a crank member 20 having the radially vdisposedv arms 21 and 22. Near the upper end ofthe m'ain stack I provide a cross member 23 having an enlarged middle portion as indicatedfat 24. A rod 2 5 is mounted centrally of the main stack and stub, stack and its lower ,end'adapted to like member the central portion of said v .90 maln stack 11 and be secured thereto as inr dica'ted by the rivets 1-5. Centrally of the main stack is mounted the transverse shaft 16, the same being secured against longitu 'dinal movement'by the washers 17 and pins rib member being enlarged and an opening provided therein as indicated at 30. The ends of the rib member 29 are extended to form the pin-like members 31 said pin members acting as guides and adapted to slide within theopenings provided in the lip 13. The screen member has a trans: verse member. 32 extending between the inner sides of its rim and has an enlarged middle portion as indicated at 33 in which an opening is provided to accommodate the rod 25. The upper end of the rod is threaded and a sleeve member 34is positioned between the rib 29 and the cross member 32 and by the use of nuts indicated at 35, the screen member 27 is securely held. A second, screen member 36 is provided having a larger mesh than the member-27.

This member 36 is in the shape of an'inverted cone and comprises the rim member 37 and the collar-like member 38, the collar being freely slidable upon therod 25. On

the lower end-of the ,rod'25 there is journaled the upper end of a link 39, the lower end of said link being journaled in the arm 22 of the arm member 20. Thecollar 138 .of the screen member 36 is provided with lugs in which the upper .end of a link member 40 is journaled as indicated at 41, the

lower end of said link-member being journaled in the other radial arm 21 of the arm member 20.

As has before been stated, the large stub stack 12 is adapted to slide down over the main stack 11 and thus as shown in Figs. 2, 3.'and 4, there is provided a chamberbetween the exterior walls of the main stack andrthe enlarged portion of the stub stack, Circumferentially of the main stack there is provided a series of ports as indicated at 40', the same being struck in the main stack jiand forming the aprons as indicated at 41.

The purpose of "this chamber between the main stack and the enlar ed portion of the stub stack andalso the communication'from this chamber to the interior of main'stack is that whenla-rgesparkslof such dimensions that will not pass through the screen member 36, they will be made to'travel' the cir cuitouspath as indicatedbythe arrows 42 of Fig. 4 and in this'manner'gradually put verize themselvesso that they may freely 'pass through the'screen 36,,after which by continuously being impelled. against the finer mesh screen 27'they are further pulvorized until practically a dust when they pass therethrough andare given up to the atmosphere.

On the extended end of the shaft 16 there is secured a pulley 42 and on the breeching 10 there is suitably mounted a vertical {casing or cylinder 43. In the cylinder 43 there is provided a plunger or piston 44 carryingv a piston head 45 and the upperend thereof ing therefromv are the p'ipes 53 and 54.

secured to a cable or rope as at 46, the oppo. site end of said cable being secured to the one end of a coil spring 47 and the opposite end of said coil spring being in turn 'secured to the cylinder or casing 43 as at 48.

In the bottom of the cylinder 43 there is 7 Either the pipes 53 or,54 may be connected to the steam pipe of the engine and preferably below the throttle. 'The other (pipe may be connected to the blower of the engine and by either of these means the piston may be operated'to rotate the shaft 16, a crank 56 is formed on the pulley 42 and to this crank may be attached a rope orwire extending to and within reach of the engineer whereby the shaft 16'maybe rotated to hold the screen members in their closed position or opened position as may be desired. I v v In the operation of this device assuming that the pipe 53 is connected below the throt;

tle itwould then be, seen that whenever the engine was started the piston 44 would be shoved downwardly against the tension of, the spring 47 and the shaft -16tur1ied which would. raise the screen member 35 and lower the screen member 27, or, in other words, bring them to their closed position as shown in Fig. 4. When the'steam was shut off or the engine shut down the tension of the spring 47 would rotate the shaft.

in the opposite direction and againbring.

the screen memberstotheir open position as. shown in Fig. 3. It also canbe here noted that in case one of the pipe's 53 0i 54 were connected to the blower of an'e'ngine the same operation could behad.

ltis also here to be noted that in case it is desired to retain the screen members in, their closed position continuously by means of the rope connected ,to the crank 56 on the pulley 52, the shaft can be tied in the desired position for holding the screens closed;

This crankmember '56 can also be utilized in case the screen members. become clogged with the ashes from the sparks or soot,b'y

engines or the like where wood is principally used for fuel, it is to be understood, how- I: simply closing and opening the screen memany other en ine using like fuel.

iVhile I haveshown the preferred form of my invention as now known to melt wlllbe understood that various changes in the combination, construction and arrangement of parts may be-made by those'skilledin the art without departing from the spirit of the invention as claimed."

Having thus described my invention, what I claim and desire to secure by Letters Patent, is: i

1. In aispark arrester'including a main stack, a'stub stack secured thereto, having an inturned lip, a rod mounted centrally of said stub stack, a pair of screens mounted on said rod, one exteriorly and the other interiorly of said stub stack, said internal screen being adapted to seat upon the inner IlIIl of'said inturned lip and said exterior screen adapted to. seat on the exterior rim thereof,

a shaft and connecting means whereby with the turningof said shaft in one direction the screens will be moved away from said lip and the turning of said shaft in the opposite direction will cause the screens to seat upon said lip.

2. In a spark arrester including a main stack, a stub stack secured thereto, having an inturned lip, a rod mounted centrally of said stub stack, a pair of screens mounted on said rod, one exteriorly and the other interiorly of said stub stack, said internal screen being adapted to seat upon the inner rim of said inturned lip and said exterior screen adapted to seat on the exterior rim thereof, a shaft and connecting means whereby with the turning of said shaft in one direction the screens will be moved away from said lip and the turning of said shaft in the opposite direction will cause the screens to seatupon said lip, and means for rotating said shaft, said means being controllable from a remote point.

3. In a spark arrester including a main stack, a stub stack secured thereto, a rod mounted centrally of'said stub stack, a pair of screen members mounted on said rod, one exteriorly and the other interiorly of the outlet of said stub stack, a shaft, and con-- necting means whereby with turning or rocking movement of said shaft in one direction the screen members will be moved in opposite directions in respect to each other.

4. In a spark arrester including a main stack, a stub stack secured thereto, a rod mounted centrally of said stub stack, a pair of screen members mounted on said rod, one exteriorly and the other interiorly of the outlet of said stub stack, a shaft, connecting means whereby with turning or rocking movement of said shaft in one direction, the screen members will be moved in opposite directions with respect to each other, means for normally holding said shaft for retaining the screen members in their last mentioned positions andmeans for rotating said shaft to move the screens toward each. other.

5. In combination, a main stack, an en larged stub stack having a reduced end and secured thereto, a chamber being formed between the enlarged portion of the stub stack and the exterior wall of the main stack, said chamber communicating with the interior of the main stack through a plurality of passsages provided therein, and a pair of screen members disposed one exteriorly and one interiorly of said stub stack and the interior screen being of larger mesh than the exter1or screen. 7

6. In combination, a main stack and a. large stub stack having an inturned 11p on its upper end, and at its lower end reduced and adapted to telescope over the main stack whereby a chamber is formed betweenthe exterior wall of the main stack and the enlarged portion of the stub stack and a series of circumferential ,ports leading through the wall of said main stack from said cham-V said rod adapted to seat on the inner rim l of said lip of the stub stack, and a second screen member secured on the upper end of sald slidable rod and adapted to seat on the upper edge of said lip, a transverse shaft mounted in said main stack and connecting means between said shaft and said slidable screen and rod, whereby with the movement of said shaft the screen members may be simultaneously seated or brought to their closed position.

7. In combination, a main stack and a large stub stack having an inturned lip on its upper end, andat its lower end reduced and adapted to telescope over the main stack whereby a chamber is formed between the exterior wall of the main stack and the enlarged portion of the stub stack and a series of circumferential ports leading through the wall of said main stack from said chamber, a rod centrally and slidably mounted in said stack and extending from said stub stack, a screen member slidably mounted on said rod adapted to seat on the inner rim of said lip of the stub stack, and a second screen member secured on the upper end of said slidable rod and adapted to'seat on the upper edge of said lip, a transverse shaft mounted in said main stack and connecting means between said shaft and said slidable screen and rod, whereby with the movement of said shaft the screen members may be simultaneously seated or brought to their closed position, and means connected to said shaft for holding said screen members in their open position.

adapted to slip over the main stack and be i 8. In aspark ar'rester including a stack, a transverse shaft mounted within said stack, a rod mounted above said shaft and centrally of said stack, said rod carrying on its upper end a screen member adapted to seat over the outlet of said stack, a secondscreen member slidably' mounted on said rod and disposed interiorly of the stack, said second screen member being complemental to the first, connecting means between said screen members and a shaft for simultaneously bringing said screen members to their closed or open position and means connected to said shaft whereby the same may be rotated to bring the screen members to their closed and open positions,

said means being controllable from a remote point.

9. In a device of the character described,

including in combination a stack, a pair of super-imposed screens forming a closure therefor, a central rod with which one screen is secured and the other-shdably mounted,

a connecting means with said rod and last named screen whereby the screens may be separated or returned to their original positions.

' V 10; In a spark arrester including" amain stack, a rod mounted centrally of said stack,

a pair of screen members mounted on said rod, one exteriorly and the'other interlorly in combination a stack,:a screen member; over the outlet of said stack,: peripheral guides therefor to permit reciprocal move ment of said screen, a rod depending from said screen, a second screen complemental to the first named screen slidably mounted on said rod, a. connecting means with the rod 7 and lower screen whereby the screens may be reciprocated in opposite. directions with respect to each other. I

In testimonywhereof I have hereunto set my hand in'the presence of two subscribing witnesses.

7 ALBERT D. JONES. Witnesses:

' O. C. LANDRITH,

E. D. BALDWIN.

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