US1670651A - Sand trap - Google Patents

Description

F. CELLNER May 22, 1928'.

SAND TRAP Filed Sept. 13, 1.927

v Inventor Fr k Ce/lner' A ltomey Patented May 22, 1928.

with 1 FRANK CELLNER, or mga lwasfimmn.

Application 'nied se' tember 13,1927. Serial Ital-"219,197. p I

My present invention relates to improvements in sand traps for railway locomotives of the type employing air under pressure for forcing the sand, which flows by gravity from the dome to the trap, to the front of the driving wheels as well as to the rear of the wheels for use in forward and rear movements of the locomotive or engine.

The sand traps are equipped with means whereby the air pressure may be ap lied to the interior of the trap for clearing t e sand chamber and means are providedby means of which access may be had to the interior of the trap for repairs, cleaning, etc. A cutoli is provided between the dome and the interior of the trap whereby the entrance of sand to the trap may be prevented when desired.

The invention consists in certain novel combinations and arrangements of parts as will hereinafter be more fully set forth and claimed. In the accompanying drawings I have illustrated one complete example of 'the physical embodiment of my invention wherein the parts are combined and arranged according to the best mode I havethus far devised for the practical application of the principles of my invention.

Figure 1 is a side view of so-much of a railway locomotive as is necessary to illustrate the installation of my invention.

Figure 2 is a sectional view at line 2-2 and Figure 3 is a sectional view at line 3-3 of Figure 1. Figure 4 is a perspective view of the cut-off, detached.-

Figure 5 is a top plan view showing the installation. Figure 6 is a front view of one of the two sand traps. Figure 7 is a sectional detail view at line 7-7 of Figure 6.

In order that the general arrangement and relation of parts may readily be understood I have shown in Figure 1 a standard type of boiler as 1 with the usual sand dome 2, and the sand traps 3 and 4 are located at opposite sides of the boiler below the dome 2.

Air under pressure is provided from the usual auxiliary air reservoir 5, and the air pipe 6 is equipped with a pair of control valves 7 and 9, the former to control flow of sand for the drivers 8 when the locomotive is backing and the other to control How of sand to the drivers 10 when the locomotive is advancing.

To feed the sand to the rear, an air pipe 11 from the valve 7 extends the two sand I traps and is provided with a blast nozzle 11 and to feed the sand forward, an air pipe 12 extends from the valve 9 to the two traps and is provided with a blast nozzle 12' within the traps. For sanding the tracks as the engine is backing the sand pipes 13 project rearwardly from the traps, and for sanding the tracks in front, of the wheels 10 when the locomotive is advancing the pipes 14 project from the respective traps.

The traps are provided with outlet ports the nozzles Willcause a flow of sand through its sand pipe, and thus to the track or rails.

If repairs or replacements are necessary, or it is desired toclean the interior chamber 18 of the trap, the flow of sand may be cut off from the dome to the trap by means of a cut-off device located in the top of the trap, just beneath the intake port 17 for the sand from the dome.

This cut-off device and the side plate or cover 19 are readily accessible, and the former may be conveniently secured in the trap when the latter has been temporarily removed. The cut-off device comprises a horizontally disposed flat plate 20 having an attaching flange 21 and secured in-the top part of the chamber 18 of the trap. On top of the flat plate is arranged a flat, slide gate 22 which has a guide flange movable in the guide slot 23 of the flat plate, and the gate is adapted to open or close the sand port 24 in the flatplate. The port 24 is normally open, but should occasion arise when it is necessary to cut oil the flow of sand from the dome to the trap, the gate is moved byhandpower applied to the handle- 25.

Should the sand become wet or clogged and refuse to flow freely the cut off may be closed, the side plate 19 removed to'give access to the interior of the trap, and the latter may be cleared, after which the cover plate is replaced and the slide gate opened.

The two globe valves 7 and 9 are of course manipulated by the engineer of the locomotive in his cab in usual manner for sandno a ing purposes, and of course the pressure of air to the sand pipes may be controlled by manipulation of the valves.

Having thus fully described my invention, What I claim as new and desire to secure by Letters Patent is a The combination with a sand trap having an inlet sand port to receive sand from a dome, and a normally closed, removable side cover for the trap, of a detachable plate 10 guided in said slot and adapted to close-the 15 portfand an exterior handle on said gate.

In testimony whereof I afiix my signature.

FRANK CELLNER.

Images