US1061668A - Apparatus for controlling the artificial blast in locomotives. - Google Patents

Description

6. DE GRAHL.

APPARATUS FOR CONTROLLING THE ARTIFICIAL BLAST IN LOCOMOTIVES.

APPLICATION FILED JUNE 17, 1910.

1,061,668. Patented May13,1913.

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fiver/Z02" Wz'izaeeses G. DE GRAHL. APPARATUS FOR CONTROLLING THE ARTIFICIAL BLAST IN LOCOMOTIVES.

- APPLICATION FILED JUNE 17, 1910.

1,061,668. Patented May13,1913.

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1,061,668. Patented May1 3, 1913.

G. DE GRAHL. APPARATUS FOR CONTROLLING THE ARTIFICIAL BLAST IN LOCOMOTIVES.

APPLIOATION FILED JUNB17, 1910.

1,061,668. Patented May 13, 1913.

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J 2 433711935 Jae/en 0? $3265 6) d8 maz GUSTAV Dr: GRAHL, OF

ZEHLENDORF, NEAR BERLIN, GERMANY.

APPABTATUS FOR CONTROLLING THE ARTIFICIAL BLAST IN LOCOMOTIVES.

Specification of Letters Patent.

Application filed June 17. 1910. Serial No. 567,403.

Patented May 13, 1913.

To all whom, i t ma-y concern:

Be it knowmthat I, GUSTAV on GRAHL, a subject of the German Emperor, and residing at Zehlendorf, near Berlin, Germany, have invented certain new and useful I mprovements in Apparatus for Controll ng the Artificial Blast in Locomotives, of which 7 the following is a specification.

The subject-matter of my invention is an improved apparatus for controlling the art1 ficial draft in boiler-furnaces and it comprises means by which the main-draft 1s actuated by admission of steam. It also ineludes a regulating piston actuated by livesteam by means of which the admission of steam to the auxiliary blast is shut oft"; by shutting oil the steam from the engine the main draft is interrupted and by actuating the regulating iston in opposite d rection the admission 0 steam to the auxiliary blast is obtained again. D

The new feature of my invention consists in providing two valves which are preferably manually operatable; one of said valves controls the admission of steam to the auxiliary blast as well as to the steam-nozzles of the furnace andit may be opened automatically by the regulating piston when the steam is admitted to the engine. But said valve may be closed manuallv if the steam is shut off from the engine. The other valve can be opened manually in order to admit steam to the auxiliary blast, if the steam is shut off from the engine, and by closing the first named valve the admission of steam to the auxiliary blast is also obstructed.

One illustrative embodiment of my invention is represented by way of example in the accompanying drawing, wherein Figure 1 is a longitudinal section, partly in elevation, showing my new eombinatlon of valves regulating the admission of steam to the steam nozzles and to the auxiliary blast, Fig. 2 is a section on the bent line AB in Fig. 1, Fig. 3 a section in the plane CD in Fig. 1 as seen in the direction of the arrow 3, and Fig. 4 a section in the plane E-F in Fig. 1 as seen in the direction of the arrow 4; Figs. 5 and 5 show in side elevation a locomotive boiler provided with my improve apparatus and Figs. 6 and 6 are a plan view of this locomotive boiler; Fig. 7 shows the locomotive boiler with arts broken away showing the interior 0 the dome, while Fi s. 8 and 9 show details, enlarged, in end elevation and in two different positions as seen in the direction of the arrow 65 in Fig. 3. Fig. 10 shows a vertical section through the fire-box, disclosing the steam-nozzles. Fig. 11 shows a horizontal section through the fire-box also disclosing the steam-nozzles.

Referring to the drawings, and firstly particularly to Figs. 57, 1 designates the locomotive boiler and 2 the cylinder, whose slidevalve chest 63 is connected by a pipe 64 with the dome 5. The shaft 6 extends through the end part of the boiler and is journaled at one end ,at 7. The supply of steam to the pipe 64 can be shut off or opened at 8 by a slide-valve 9, which is pivotally connected by a rod 10 with a lever 11 provided on the shaft 6, carrying the regulator lever 12. The steam chest 63 is also connected by a pipe 13 with the blast nozzle 14. The apparatus 15 (Fig. 5) comprising the valves according to my invention is secured laterally on the boiler.

Referring now to Figs. 1 to 4, my apparatus comprises a valve box, in whose cylindrical portion 16 the piston 17 is slidable. This piston runs out at one end into the piston 18 which is larger in diameter than the iston 17 and is slidable in the part 19 of tievalve box. The other end of the piston runs out into a valve disk 20 whose seat is at 21. Thepart 16 of the box is connected by way of the passage 22 with the part 23 of the box, in whose stuffing box 24 the rod 25 is movable longitudinally. This rod is provided with the valve disk 26 whose seat is at 27. The projection 28 of the valve disk 20 can act, whendisplaeed axially, on the valve disk 26 and lift the latter from its seat. The rod 25 is connected with the rod 29, on which is provided a hollow shaft 30 (Figs. 1, 5, 7, 8, 9) journalcd in the bearings 31. A lever 32 is secured on this hollow shaft and a ring 33 is'free to rotate thereon between two set screws. A lever 36 is pivot-- ally connected to the ring 33 at 35, a lever 38 being pivotally connected at 37 with the lever 36. The rod 29 is pivoted at 39 to the lever 38. The pipe 40, connected with the pipe 64 leading to the steam chest, opens into the part 19 of the valve box. The pipe 41 connected with the duct 42 is an air-relief pipewhieh allows air to issue from the part 19 of the valve-box when the piston 18 moves to the right. The pipe 43 opening into the space between the valve disks 20 and 26 is connected with the steam nozzles of the fire-box. The part 19 of the valve box is connected by the check valve 44 with the duct 45. The latter opens into an elbow 46, to which the pipe 48 leading to the auxiliary blast 47 is attached. (Figs. 2 and 5.) The part 23 of the valve box is connected by the bend 49 with the socket or valve box 50 containing a valve disk 51 which can be screwed against its seat 53 by turning a rod 52 and shut-off the passage 49 from the elbow 46. The pipe 54 connected with the steam space of the boiler and particularly with the dome opens into the part 23 of the valve box. An arm 55 is secured on the rod 52 and an arm 56 on the hollow shaft 30. (Fig. These two arms are pivotally connected by two straps or links 57, and provided with projections 71, 72 respectively, (Figs. 8 and 9) possessing the form of spherical segments. Holes 75 and 76 in the levers 55 and 56 for the pivots 74, 73 respectively are gradually enlarged toward their ends. Consequently the rod 52 may be shifted longitudinally relatively to the hollow shaft 30 when the valve disk 51 is to be screwed from its closed position into its open position as will be understood from Figs. 8 and 9.

My improved arrangement of valves operates as follows: When starting the engine the regulator 12 is turned into the open position, in which the slide-valveQ admits steam to the pipe 64. Consequently steam is supplied to the steam chest and thence into the cylinder, and after it has done work there passes as exhaust steam through the pipe 13 to the blast nozzle 14, whereby the main blast is simultaneously started. Live steam from the pipe 64 passes through pipe 40 into the part 19 of the valve box. Steam also enters through the pipe 54 into the steam inlet chamber 23 of the valve box. As the piston 18 has a larger diameter than the piston 17, the steam in the part 19 will push the pistons 18, 17 into the position shown in Fig. 1, in which the valve disk 20 is pressed against its seat 21 and the part of the valve box to the left of the checkvalve disk 44 is shut off from the steam pipe 54. The valve disk 26, on the contrary, cannot be seated because it is prevented by the projection 28 of the valve disk 20. Consequently, the steam entering through the pipe 54 into the part 23 can pass through the pipe 43 to the steam nozzles in the fire box. When the engine is stopped, i. 0. when the steam is shut off from the engine by closing the valve 9 and accordingly when the main draft is also stopped, the steam pressure in the part 19 of the valve box disappears. Consequently, the steam entering into the part 23 of the valve box will push thepiston 17 to the left and therefore the steam can pass through the check valve 65 44 and the duct 45 into the pipe 48 leading to the auxiliary blast. It may also at the same time pass through pipe- 43 to the steam-nozzles in the' fire-box. Should the grate not be charged sutliciently high with coal, however, and should it be possible that the steam supplied through the pipe 43 into the fire box can accordingly extinguish the fire, by operating the lever 38 and by shifting the rod 29 axially in the hollow-shaft 30 the valve disk 26 is seated by the rod 25 and the steam is cut off from the auxiliary blast and pipe 43 and the steam nozzles. If, by subsequently operating the lever 32, the sleeve 30 is rotated in its bearings 31 in the direction of the arrow 60 (Figs. 1 and 5), the valve disk 51 is lifted from its seat 53; the part 23 of the valve box and the pipe 48 are hereby connected, in spite of steam being shut off from the steam nozzles, and consequently good combustion of smoke is obtained.v lVhen steam is again admitted to theengine and the main draft is operated the valve disk 51 is moved to *-tificial draft in locomotives the combination with a valve box 15 having a steam inlet chamber 23, of steam nozzles 70 and auxiliary blast 47, a pipe 43 connecting said valve box 15 with the nozzle 70, another pipe 48 connecting the valve box 15 with the auxiliary blast, a non-return valve 44 between the valve box 15 and the last named pipe 48, a manually operated valve 26 in said box for shutting off steam from the said pipes 43 and 48, a steam operated valve 20 in said box controlling the entrance of steam by way of the said non-return valve 44 to pipe 48 leading to the auxiliary blast and for simultaneously preventing the first named valve 26 from shutting off steam from the pipe 43 leading to the steam nozzles 70 another valve 51 for connecting and disconnecting said inlet chamber 23 with the pipe 48 leading to the auxiliary blast, said valve 51 being independent of the manually operated valve 26 in said inlet chamber 23.

2. In an apparatus for controlling the artificial draft in locomotives, the combination with a valve box 15 having a steam inlet chamber 23, of steam nozzles 70 and auxiliary blast 47, a pipe 43 connecting said valve box 15 with the nozzles 70, another pipe 48 connecting the valve box 15 with the auxiliary blast 47, a non-return valve 44 between the valve box 15 with the last named pipe 48, a manually operated valve 26 in said box 15 for shutting off steam from the said pipes 43 and 48, a steam operated valve 20 in said box 15 controlling theentrance of steam by way of the said non-return valve with a valve-box having a steam inlet chamber, of steam-nozzles, an auxiliary blast, a pipe connecting said valve box with the nozzles, another pipe connecting the valve box with the auxiliary blast, a manually operated valve in said box for shutting off steam from the said pipes, a steam-operated valve in said box for shutting off steam from the pipe leading to the auxiliary blast and for simultaneously preventing the first named valve from shutting ofii steam from the pipe leading to the steam-nozzles, another valve, a rotatable axially displaceable rod connected with the last named valve, an arm on said rod, an axiallyslidable rod connected with said first named valve, an axially non-displaceable hollow shaft rotatable on the last named rod, an arm on said hollow shaft and straps pivotally connecting the two arms, the last named rod being displaceable longitudinally with respect to said hollow shaft.

4. In an apparatus for controllin the ar tificial draft in locomotives the com ination with a valve-box having a steam inlet chamber, of steam-nozzles, an auxiliary blast, a pipe connecting said valve-box with said steam-nozzles, a second steam-pi e connecting said valve box with the auxi iary blast, a manually operated valve in said box for shutting off steam from said pipes, a steamoperated valve in said box for shutting off steam from pipe leading to the auxiliary blast and for simultaneously preventing the first named valve from shutting off steam from the pipe leading to the steam-nozzles, another valve, a rotatable axially displaceable rod connected with the last named valve, an arm rigidly secured on said rod, an axially slidable rod connected with said first named valve, an axially non-displaceable hollow-shaft rotatable on said last named rod, an arm being provided with projections having the form of spherical segments, links between said arms, pivots for movably securing said links to said arms, said arms being provided with holes for said pivots, said holes being gradually enlarged toward the lateral surface of said arms.

In testimony whereof, I afiix my signature in the presence of two witnesses.

GUSTAV DE GRAHL.

Witnesses HENRY HAsPnn, WOLDEMAR HAUPT.

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