US1704272A - Locomotive-frame structure - Google Patents

Description

March 1929. w. E. WOODARD LOCOMOTIVE FRAME STRUCTURE 3 Sheets-Sheet Filed Jan. 21, 1926 ammm @51 (Mime/1f March 5, 1929. w. E. WOODARD LOCOMOTIVE FRAME STRUCTURE Filed Jan. 21, 1926 3 Sheets-Sheet 2 awuenio'c mm WvM $51, A Quanta/1f March 5, 1929. w. E. WOODARD 1,704,272

LOG OMOT I VE FRAME S TRUC TUBE Filed Jan. 21, 1926 5 Sheets-Sheet 5 I l l I Svwemtoz Patented Mar. 5, 1929.

UNITED STATES WILLIAM E. WOODARD, 0F FOREST HILLS, NEW YORK.

LOOOMOTIVE-FRAME STRUCTURE Application filed January 21, 1926. Serial No. 82,648.

This invention has reference to an improved structure of locomotive frames and has for its primary object the provision of a device of this character which is formed basically in two parts, one termed the forward portion, which is relatively narrow to rest between the driving wheels of the locomotive, and the rear part, which is articulated to the forward part and extended sidewise into a large open frame adapted to carry'the plurality of pairs of wheels which support this part, to provide ample space for the mounting on this part of the ash pan, and to afford, by means of diagonal rearward extension, a stable backing for the buffing strains to which the frame is subjected.

Another object of this invention is the construction of a locomotive frame of the character indicated, in two unitary castings, the forward narrow portion, which is placed between the driving wheels, being one casting, and the rear expanded open portion being a second'casting, the two having articulated connections with one another.

A further object of the inventionis the provision on the rear part, of suitable boiler supports which will permit free movement of the frame and at the same time resist any weaving motion in the two parts of the general frame structure.

A further object of this invention is the provision in the two cast members, that is the forward and the rear parts of the f ame, of suitable interengaging means whereby the rear part is held in proper horizontal alignment with the forward portion.

A further object of the invention is the provision on the rear portion of the frame of suitable means for supporting an auxiliary power device such as the well known booster.

A further object of the invention is the provision of an improved construction of the rear portion, which carries the rear wheels of the locomotive, with the draw pocket of just suflicient width crosswise of the engine to take the buffer, and combining this with outwardly and diagonally extendin members forming a connection with the sitfie frame members of the rear portion, the side frame members being provided with a plurality of pedestal jaws forward of the diagonal parts at the rear. This arrangement of diagonal rear corner provides ample room for the location on the outside of the frame member of injectors and piping for the same and booster piping and other fixtures which may have to be applied.

By the arrangement above specified I form the rear end of the rear member of the locomotive frame in a kind of triangular shape which permits a great deal more space at the'rear corners than it is possible to secure with a built up and bolted structure where in the side members must be run in parallel planes outside the wheels and a rear cross member inserted to be attached to such side members by bolted connections.

The triangular formation also adds considerably to the strength and rigidity of the structure as compared with the built up form and also saves a substantial amount in weight as well as providing for the saving in space referred to. This saving in space is of great importance on modern locomotives in which a large number of pipe and water connections must be taken care of between the engine and tender.

In order that my invention may be better understood, I will now proceed to describe the same in connection with the accompanying drawings in which ig. '1 is a side elevation showing a locomotive with my improved" frame applied thereto;

Fig. 2 is a plan view of the frame itself showing clearly the narrow forward portion which extends longitudinally between the driving wheels and the extended open rear portion with the triangular rear end which is articulated to the forward portion as above set forth.

Fig. 3 is a side elevation of the rear portion or member of the frame;

Fig. 4 is a part plan view of the structure shown in Fig. 3; a

Fig. 5 is a half end view of the same construction';

Fig. 6 is an enlarged detailed view showing the articulated connection between the front and rearmembers of the frame; and

Fig. 7 is a plan view, partly in section, of the apparatus shown in Fig. 6.

Referring now more particularly to Figs. 1 and 2 it will be seen that I have therein indicated a locomotive boiler 1 having a fire box 2 and cab 3 with cylinders 4 and forward wheels 5.

Between the several pairs of driving wheels 6 I mount a forward member of my improved frame which is composed primarily of a unitary casting 7'having side bars 8 and cross members 9 and boiler support brackets 10, 11 and 12. The longitudinal members 8 are provided with the usual pedestal aws 13 for carrying bearing boxes which receive the axles 14.

The rear half of the frame I construct preferably of a unitary casting 15 which is of an open frame shape with side longitudinal members 16 which extend outside the plane of the wheels 17 and 18, which latter revolve inside the members 16 in boxes carried in pedestals 19 and 20 formed in the side members 16. The side members 16 are joined together at the rear by means of the diagonally extending parts 21 which are inclined as shown and embrace between them the draw pocket 22, there being a downward extension 23 which carries the cylinders 24; of the booster device which at its forward end is mounted around the axle 25.

On the upper sides of the side members 16, and just forward of the inclined parts 21 which latter form with the draw pocket 22 a kind of triangular rear end, I provide a couple of supports 26 on which the rear end of the fire box rests as indicated at 27.

At the forward end of the rear member 15 I provide an articulated connection with the forward member 7 by means which is shown more in detail in Figs. 6 and 7 wherein the rear end of the member 7 is illustrated as provided with a recess 28 constructed to receive the extension 29. A bolt or pin 30 held in place by plate 31-serves to connect the two parts 7 and 15 together and as a means for avoiding undue torsional movement of the one part with relation to the other, I provide bearing lugs 32 which engage extensions of the forward part as indicated at 33 and which thus hold the forward and rear portions of the frame in proper relative horizontal position.

- As indicated in Figs. 3 and 4 I provide a cross member 34 which is intended as a support for an ash pan that extends downwardly between the side members 16 of the rear portion of the frame and also aids in stiffening the rear part at a point intermediate the ends. In the construction shown I propose to cast each of the two forward locomotive frame members in one casting, making the crossties 9, guide yoke support 9 and valve motion support 9 integral with the frame side members. This construction will eliminate bolting surfaces and parts as well as reduce weights. I am aware that it has heretofore been-proposed to cast frames with two side members in one piece, but my improvement goes farther than has heretofore been proposed, in that I arrange an integral construction at the rear end of the front engine frames to form a hinged joint with an articulated rear end. At this point in a locomotive structure having an articulated rear, very high stresses are concentrated, due to the fact that at this point the firebox and rear end of the boiler are supported upon the front engine frames, one support being at the point marked 1 on the drawin and the other support being at the point marked 1 (outboard bearings). These connections are preferably made by vertical expansion plates as shown in the side view of the locomotive in Fig. 1.

On account of limitations of space it is extremely difficult to get a bolted connection at this point which will provide anywhere near the same degree of strength and rigidity as can be secured by forming the hinge casting in one piece with the two side frames. The frames and hinge casting at this point not only have to carry the vertical loads at the rear end of the boiler but also transmit heavy pulling and buffing strains. In addition, the front frames at this point have recesses cast in them with which the forward end of the articulated trailer truck engages. This also introduces certain strains in engine frames at this point, and forming the hinge casting in i one piece aids in securing a bettercondition of strength and rigidity at the point where the rear frame engages the front frame.

I claim 1. A locomotive frame structure comprising in combination unitary cast forward and rear frame members articulated together, the forward frame member being within the plane of the locomotive wheels and the rear frame member having its sides outside the plane of the locomotive wheels, and a plurality of pairs of wheels mounted in each of said frame members.

2. A locomotive frame structure comprising in combination unitary cast forward and rear frame members articulated together, the forward frame member being within the plane of the locomotive wheels and the rear frame member having its sides outside the plane of the locomotive wheels, and a plurality of pairs of wheels mounted in each of said frame members, the side members of the rear portion of the articulated frame bein spaced apart a sufficient distance to provi e clearance for an ash pan.

3. A locomotive frame structure comprising in combination unitary cast forward and rear frame members articulated together, the forward frame member being within the plane of the locomotive wheels and the rear frame member having its sides outside the plane of the locomotive wheels, and a plurality of pairs of wheels mounted in each of said frame members and power mechanism mounted to drive wheels in each .of said members.

4; A locomotive structure having forward and rear frame members articulated together,

prising a cast unitary structure having motive frame com rised of forward and rear formed therewith supportsjfor the boiler sections articulate together, the bearings for and a connecting member for therear part the fire box being cast unitary with the for- 10 of the frame. v ward frame section. 5 5. A locomotive structure comprising in In testimony whereof, I have hereunto combination a fire box, bearin s for support signed my name. 1 7

ing the forward end of the fire ox, and a 1000- WILLIAM E. WOODARD.

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