US508849A - Track-sanding apparatus - Google Patents

Description

4 Sheets-Sheet 1. A

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0. w. SHBRBURNE, TRACK SANDING APPARATUS.

No. 508,849. Patented No 14, 1893.

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G. W. SHERBURNE. TRACK SANDING APPARATUS.

No. 508,849. Patented Nbv. 14, 1893.

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. G. W. SHBRBURNE.

- TRAGK SANDING APPARATUS. No. 508,849. Patented Nov. 14, 1893.

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l h A r v M Q wg g/v/w/v/Mwwvva A .mu .H A 1 7/ ITHEESES W. 9 77' fy l k UNITED STATES PATENT OFFICE.

CHARLES W. SHERBURNE, OF BOSTON, MASSACHUSETTS.

TRACK-SAN DING APPARATUS.

SPECIFICATION forming part of Letters Patent No. 508,849, dated November 14,1893.

Application filed January 3, 1893. Serial No. 457.975. (N0 model.)

To all whom it may concern:

I Be it known that I, CHARLES W. SHER- BURNE, a citizen of the United States, residing at Boston,in the county. of Suffolk and State of Massachusetts, have invented a new and useful Improvement in Track-Sanding Apparatus, of which the following is a full, clear, and exact description, reference being bad to the accompanying drawings, forming a part of this specification, in explaining its nature.

This invention relates to the combination of the air valve which actuates the tracksanding apparatus with the engineers valve and with the air supply from the air brake system and to the details of construction of such an apparatus.

. In the drawings Figure l is a side elevation of alocomotive carrying this apparatus. Fig. 2 is'a side elevation of the engineers valve showing its connection with the valve of the track sanding apparatus. Fig. 3 is a detail which shows the manner of combining the valve stem of the air valve of the tracksanding apparatus with the engineers valve. .Fig. 4 is a horizontal section of the valve of ordinary engineers valve, by which such an apparatus may be worked without changing the handle of the engineers valve. Fig. 6 is a top plan of a modified form of the tracksanding valve of Fig.4; and Fig. 7 is a ver of the track sanding apparatus.

ing wheels.

tical section of the same.

The figures show how the track sanding valve may be operated by hand without moving the engineers valve. I

Like letters denote like parts in all the figures.

A is a locomotive; B is its cab; and O is a sand box; 0 is the connecting rod of the le ver usually employed to operate such valves The sanding pipes are in the usual form and extend from the sand box 0 to the front of the drivd is the air pipe leading to the sand valvesorsand barrel, by which and through which the supply of air driven sand be further described.

e is the air pipe leading from the air reservoir F to the engineers valve, and f is the air pipe of the train line. The track-sanding apparatus and engineers valve are shown in sketch at G. The details of this apparatus shown atGare illustrated in the valve figures.

d is as before the air pipe conveying compressed air to the sand box..

g is the engineers valve,andh is its handle.

H is the bracket which supports the engineers valve from the head of the boiler.

c is an air pipe leading from the housing forming a part of the engineers valve into which housing the pipee enters. This housing being continuous with pipe e is lettered e in Fig. 4. A cylinder I of Fig. 4 is furnished with a diaphragm i, in which diaphragm is a valve seat, to which valve seat.

I have already described in previous pat ents several devices for employing the air blast in connection with the business of track-sanding, and either one of these may be employed in connection with this apparatus. The pressure of air against the end of the valve 2' will be sufficient to keep it to its seat, unless it is pressed ofi by some force applied in opposition to the air current.

The handle h of the engineers valve is provided, on its end, where it engages with the stem of said valve, with a cam'h, as shown in Fig. 4, and this cam pressing against the end of the valve stem i will throw the valve off its seat as the handle it is mo'ved from right to left, and the pressure of air will reseat the valve as the handle is moved from left to right. p v

The drawings in Figs. 2, 4, and 5 are too small to show the detail of the device for en- I is furnished to the track sanding pipes. All these parts are of usual form and need not gaging the valve stem 1'" with the cam on the l engineers valve, and therefore this detail issimply lettered K in those figures. In order to understand the construction of this terminal of the valve stem, Fig. 3 has been named. In that figure t" is the piston rod, Z is a cap fitting on the end of the piston rod, and Z is a slot in said cap. Z is the head of a pin or screw which goes through said slot and into the piston rod, and prevents the cap Z from being readily detached. Upon the side of the piston rod is placed an eccentric mwhich has a handle on it m.- By turning this eccentricso that its fat side is toward the cap Z the piston rod becomes virtually lengthened, and therefore able to engage the eccentric h on the engineers lever h, and by turning it so that its lean side is toward the said cap the eccentric will not engage said cam. In order,however, that the valve may be worked by and without working the engineers valve it would be desirable to make the eccentric with such a throw that when the valve was on its seat, the thin side of the eccentric was against the cap land by turning the eccentric so that the fat side pressed against the cap Z the cap would be driven out against the long part of the cam h, and the valve '5 thus lifted from its seat.

In order to provide an easy way of converting the present engineers valve lever into a valve lever with a cam to it without throwing away the lever I make a frame which is shown in Fig. 5. This frame hooks at upon the lever handle h. The part 01, goes over the top of the handle, and abranch at right angles n goes down at the handle to about breast of the stem of the engineers valve. At this point a circular part 71 is hinged which lies close to the end of the spindle, or which can be raised out from it at its outer end. This is provided by hinging the outer end of the semi-circular part a a handle a, which is provided with a small eccentric a which when turned down against the side of the lever it allows the semi-circular part n to lie close against the end of the lever, but when thrown out to the position shown in Fig. 5 or a little farther throws the outer end of the semi-circular part u away from the end of the handle it and thereby converts the end of this handle into an eccentric, such as is I shown in Fig. 4:. This detail is merely a method of forming the eccentric shown in Fig. 4 at hi, and it is a detachable eccentric end to the engineers handle. Of course instead of making the cap of the valve stem la cap to go outside of the valve stem as shown in the previous figures, and instead of having it adjustable to and fro by an eccentric, it is obvious that it may be made in the form of a screw, and be adjusted by turning the rod. Of course also the moisture trap which is combined with the valve hitherto described as shown in Fig. 2 at M where the sides of the moisture trap are broken away may be of somewhat difie-rent shape than is here shown. Such a modification is shown in Figs. 6 and 7. The pipe leading from the sources of air supply marked e in the other figureswould be attached to the neck alsomarked e of Figs. 6 and 7, and the pipeleading-to the track sanding apparatus would be attached to the neck marked d in Fig. 6. These necks which really constitute the mechanical parts of the pipes screwed into them, being simply 'portions of the conduit leading to and from the valve have been lettered the same as the pipes to which they are attached, for the greater clearness of description. The diaphragm in which the valve seat is made is lettered as before Z, the valve Z the valve stem t". The adjusting screw which lengthens or shortens the valve stem so as to bringit in connection, with the eccentrics and the engineers lever is marked Z A check nut Z is run upon this screw against the end of the valve stem '5. A small lever it having an eye at its end is placed with the eye around the valve stem, and its side presses against the check nut Z. If now this lever could be moved toward the valve seat, as it fits the end of the valve stem tightly both being made slightly conical or with shoulders, until it forces the valve from its seat and allows air to pass into the chamber M, which serves as a moisture trap and from which moisture can be drawn out through the drainage cock oof Fig. 2, which would be placed at or near the lower point of the chamber M in Fig. 7. A plate P is fastened upon the top of the chamber M, as shown in Figs. 6 and 7, and in this plate there is a slot 1) which is inclined as shown in Fig. 6. Through this slot the handle h projects upward and if drawn from the position shown in Fig. 6 toward the other end of the slot the handle will be movable sidewise toward the valve 71 and will move with it the piston rod Z endwise until the valve is opened. This contrivance therefore allows the engineer to open the valve by hand and is an exact equivalent for the construction at first described and illustrated in Fig. 3.

The claim of this specification having been put in interference with those of other inventors, and a new application, Serial No. 482,162, of August 2, 1893, having been filed for the matters not involved in the interference controversy, no claim is made herein to specific details of construction, but only to the broad mechanical combination of the air conduit originating in the air brake pressure supply, and discharging into the sanding apparatus, with a valve in said conduit, the engineers brake valve, and mechanical connections between the two valves, whereby they are moved simultaneously, and air is automatically supplied to the sanding apparatus when the brakes are applied.

Having thus fully described my invention,

of the United States- In an airactuatedtracksandingapparatus the combination of" twoair pipes connected with the same source of air supply, under pressure one leading-to the sand storage and brake apparatus proper, and with a. single handle'under control of theengineer to actu- 1o ate both said valves together, as and for the purposes described.

CHARLES W. SHERBURNE.

- In presence of- J. M. DOLAN, v

F. F. RAYMOND, 2d.

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