US337840A - Traction and other engines - Google Patents

Description

(No Model.) 28heets-Sheet 1. F. F. LANDIS.

TRACTION AND OTHER ENGINES.

No. 337,840. Patented Mar. 16, 1886.

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(No Model.) 2 Sheets- Sheet 2. F. F. LANDIS. TRACTION AND OTHER ENGINES.

No. 337,840. Patented Mar. 16. 1886.

InvenZBr m I v is? N. PETERS. Plwto-Lillm r, Washinglnm D c UNITED STATES PATENT ()FFICEO FRANK F. LANDIS, OF VVAYNESBOROUGH, PENNSYLVANIA.

TRACTION AND OTHER ENGlNES.

SPECIFICATION forming part of Letters Patent No. 337,840, dated Maroh lG, 1886.

Application filed November 28, 1885. Serial No. 184,216. (-No model.)

To all whom it may concern.-

Be it known that I, FRANK F. Larznrs, a citizen of the United States, residing at Waynesborough, in the county of Franklin and State of Pennsylvania, have invented certain new and useful Improvements in Traction and other Engines, of which the following is a specification, reference being had therein to the accompanying drawings.

This invention has relation to traction-err gines and to the construction of the boiler, steam-dome, and piston-cylinders of the said class of engines, and of any other class to which the improvements are or may be applied.

Among. the objects in View are to reduce the number of parts, increase their functions, simplify and strengthen the construction of those retained, and at the same time by novel provisions to adapt the relatively fixed parts to assume and maintain a desired position with regard to the relatively movable parts.

The further objects of the invention will appear in the following description of the same, and the novel features will be particularly pointed out in the claims.

Referring to the drawings, Figure 1 is a central longitudinal vertical section of portions of a boiler, steamdome, and engine frame sufficient in extent to illustrate my invention. Fig. 2 is an end elevation of Fig. 1, one of the steam-cylinders and the adjacent portion of the steam-dome and the boiler being shown in vertical transverse section. Figs. 3 and 4 are modifications of the fastenings of the steam-dome to the boiler.

A represents the boiler of a traction or other engine, which boiler may be of any desired pattern or construction. Through the shell of the boiler and at any desired part thereof-that is, wherever it is desired to locate the steam-domean opening is formed therein, and an annular casting, B,' is secured at said opening by means of bolts or rivets B. The casting B is formed as a spider with radial arms B and centrallyapertured, as at B The upper surface of the casting B is formed with an annular bearing, B, which in this instance,and for a purpose hereinafter specified, is concave in cross-section. Upon the casting B is supported and secured,by means of a rod,

B the steanrdome O, which is provided with annular flange O, which is convex in crosssection, as at C to fit the concave bearing B of the casting B and form therewith a balljoint. The bolt or rod B passes through the steam-dome, as shown, and serves to bind the dome to the casting by means of the nut B.

As thus far described,it will be seen that a steam dome and boiler constructed in accordance with my invention may be simply and serviceably connected one with the other in such a manner as to permit of a ready adjustment of the steam-dome to'the boiler, in order that the former shall, by ordinary machine-finishing of the parts or castings, be adapted to assume one or more desired relative positions to each other, and therefore I deem it proper to state at this point that the casting B, provided with the annular bearing surface B, and the steam-dome 0, provided with the cooperating annular bearing 0, are important novel features of my invention,

whether employed with remaining features or I independently thereof.

When employed in connection with other features of my invention hereinafter described, the peculiar manner of connecting the steam-dome and boiler contributes to other important advantages, as will hereinafter appear. In this instance I construct the steamdome of a single casting comprising the steam-dome proper, (l, and a valve-chest, C, on two sides of the dome. Upon the inner surface of the front wall of the steamdome is also formed, integral therewith, a hollow rib or flue, G, which communicates with the steam-chest on either side of the dome. An aperture, 0 through the said front wall of the dome, communicates with the flue 0*, and above said aperture and through the wall of the dome is a larger opening, 0, the purpose of which is to receive the casting D, secured to the dome by the bolts D, (see Fig. 2,) which is provided with a flue or steam-duct, D D D the firstmentioned section of the same communicating with the aperture 0*,

which leads into the steam duct or passage 0*.

The section D of the steam-passage formed in the casting D communicates with or is shut off from the interior of the steam-dome by means of the throttle-valve E, the rod E of which passes through the stuffing box E screw-threaded into or otherwise attached to the casting D.

In the section D of the steam passage formed in the casting D is suitably mounted a governor-valve operated and controlled by a governor,F,driven by any convenient meansas, for example, by a belt from the crank-shaft of the engine to and passing around the governor-pulley F. (See Fig. 2.)

The upper surface of the side and end walls of the valve-chests O are planed or otherwise finished to receive the cap-plates G, which are secured in position by bolts G.

The exterior walls of the valve-chests are perforated for the reception of a projecting casting, H, formed on the cylinder I.

lhe bolts I serve to secure the cylinders to the valve-chest portions of the steam-dome.

The casting H forms the seat of or communicates with the valve-J, (see dotted lines,

' Fig. 1,) and is provided with the usual ports for the supply of steam to the cylinder, one of which-the exhaust port I"is clearly shown in Fig. 2. The valve stem J passes through the end wall of the valve-chest, and a stufling-box, J is secured thereto or formed thereon, the aperture for thestem being shown in dotted line. Y

A cylinder-head, K, is secured in the usual manner to the cylinder I, in front of and at the opposite end of which is secured a head, K, and frame-work K, in which latter are fitted and arranged the ways K of the crosshead L, which is connected with the piston-rod M. A cylinder head and frame are mounted and secured in a like manner upon each side.

It will readily be seen that the parts upon one side balance those upon the other, and that by reason of the peculiar joint employed between the steam-dome and the boiler the leveling-up, alignment, and primary adjustment of the parts one to the other, as well as the maintenance of such an adjustment in use and operation, are greatly facilitated by the construction described.

A joint of the character described between a steam-dome and a boiler, without mounting the cylinders upon a dome, serves a heneficial purpose; but with the cylinders attached to, mounted upon, or suspended from the dome, there is a certain freedom of action betweenthe boiler, the dome, and the cylinders, which permits a more or less independent movement of the one with relation to the other, so that the alignment of the cylinders, cross-heads, and remaining parts of the engine are not disturbed by the unequal expansion and contraction of the boiler and engine as when mounted directly upon the boiler.

That part of the invention relating to engine-bearing will be more fully described and claimed in a subsequent application. From the construction as above described it will be apparent that steam may be entirely shut off from the engine-cylinders by means of the throttle-valve as it is thrown completeis exhausted in the usual manner.

ly across the steam-passages D of the casting D. When, however, the throttle is withdrawn from over said duct or passage, steam escapes from the dome and reaches the governor-valve, and from thence passes through the passage D into the hollow rib O; or, in enginesv that are not controlled by a governor,

it can be made to pass direct from passage D to O, and from thence to the valve-chests on both sides simultaneously, and is thence admitted behind the piston of either cylinder in accordance with the position of the valve thereof. After working the piston the steam In its passage from the dome through the casting back into the dome, and through the ribinto the valve-chests, the steam is intercepted by the governor-valve in the sectionD, and this, according to the speed of the engine, regulates the quantity which passes beyond that point. It is apparent that I have reduced the number of parts and dispensed with all piping employed in traction or other steam-engines, and that each part is simple in construction, strong, and serviceable, and adapted to be attached to .or to have attached thereto an ad jacent part by simple serviceable means.

It is evident that in place of having the bearing 13 concave in the top of the spider and the lower end, 0, of the steam-drum convex, this'arrangement may be inverse without departing from the spirit of my invention, and the bearing B be made convex and O concave. In .either case a ball-joint is produced. v

Another advantage of having the back and bottom plates of the steam-chest within the steam-drum, and hot steam at an under said steam-chest, is that these parts are thus kept as hot as the steam in the dome, and as the heat of steam is always in proportion to its.

13 is made of two lengths or eye-bolts jointed together, as shown at b", the connection being preferably the center of the circle upon whichthe joint 0 is made.

In Fig. 4 the ball-joint O is reversed, and

in place of a spider a perforated casting, B,

is used for the base, and the steam-drum is secured upon it by means ,of three or more bolts, b", passing through the bottom flange of the drum.

Having described my invention, what I claim 2. A steam-dome provided with integral and oppositely-arranged valve-chests, in combination with horizontal cylinders and a horizontal boiler, substantially as specified.

3. A steam-dome provided with exteriorly and oppositely arranged integral valve-chests and an intermediate bearing for connection with a steam-boiler, substantially as specified.

4. A steam-dome formed with exteriorly and oppositely arranged valve-chests and an interior hollow rib or steam-passage communicating with the same, substantially as specified.

5. The combination,with a boiler, ofa steanr dome pivotally secured thereon and cylinders mounted upon opposite sides of the dome, substantially as specified.

6. The combination,with a horizontal boiler and a steam-dome thereon, of valve-chests arranged upon opposite sides of the dome and integral therewith, cylinders arranged outside of the valve-chests,valves arranged within the chests, a throttle-valve, and steam-passages from the dome to both valve chests, substantially as specified.

7. A steam-dome having an interior steampassage to opposite sides thereof, in combination wit-h a casting provided with a channel communicating with said passage and with the interior ofthe dome, substantially as specified.

8. The combination of the boiler A, spidercasting B, having the concave bearing B, dome 0, having the flange G and convex bearing 0 and a bolt or bolts, substantially as specified.

9. The combination of the dome 0, having the opening 0 and hollow rib 0*, and aperture G with the casting D, having the steampassages D D D, the latter communicating with the passage 0 substantially as specified.

10. The combination of the steam-dome carrying the casting D, having the passages D D D,with the throttle E, adapted to close the latter passage, substantially as specified.

11. The combination, with the dome O, of 5 the casting D secured thereon, having the described stearn-passages leading to two steamchests, and the throttle E, substantially as specified.

12. The dome 0, provided with the valvechests 0 having apertured exterior walls, in combination with the cylinders I, having the projections H, substantially as specified.

13. The combination,with the dome 0, provided with the valve-chests, interior hollow rib, and annular flange or bearing, of the casting D, having the described steam-passages, the throttle E, and the governor F, the valve mechanism J J J the frame-work K crosshead L, and piston-rod M, substantially as specified.

14. The combination of a steam-boiler, its steam-dome, and a ball-joint bearing between said boiler and steam-dome, substantially as and for the purpose described.

15. The combination of a steam-dome and a steam-chest having two of its walls within said dome, and a recessed portion, N, in the bottom of said steam-chest, substantially as and for the purpose described.

In testimony whereof I affix my signature in I presence of two witnesses.

FRANK F. LANDIS. Vitnesses:

ABNER BEAR, ALF. N. RUssELL.

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