US2223291A - Spring rigging construction - Google Patents

Description

Nov. 26, 1940. J. c. MARIS SPRING RIGGING CONSTRUCTION Original Filed March 27, 1937 2 Sheets-Sheet 1 INVENTOR Llamas C. MHBIS Nov. 26, 1940. W 5 2,223,291

SPRING RIGGING CONSTRUCTIO N Original Filed March 27, 1937 2 Sheets-Sheet 2 I! y I I 37 INVENTOR as dam-:5 C. MHBIS AT TO EYS Patented Nov. 26, 1940 UNITED STATES PATENT OFFICE 2,223,291 SPRING BIGGING CONSTRUCTION James O. Maris, Glenolden, Pa.

3 Claims.

This invention relates generally to a driving spring system for locomotives, particularly for four cylinder locomotives having a single rigid frame of the type disclosed in my Patent'No.

2,167,216, dated July 25, 1939, of which this present application is a division.

It is an object of my invention to provide improved means for supporting driving springs whereby a relatively large diameter boilermay be employed without having the spring arrangement interfere therewith. It is Well known that certain prior driving spring arrangements, when used on locomotives having large diameter boilers, result in breaking the boiler lagging and in 151 some instances of unduly wearing or contacting the boiler shell. Another object is to permit certain of the foregoing desirable results to be accomplished most effectively by the provision of improved means for supporting the usual loop spring hangers on the spring clips at each end of the main driving springs, and it is a still further object to permit maximum lateral swinging of the hangers with respect to the springs without imposing undue stress at the point of connection at the bottom of the hanger, this being especially desirable where it is attempted to obtain maximum flexibility in a four cylinder locomotive of the single frame type, although it will of course be understood that various features disclosed herein may be utilized in connection with other types of locomotives.

Other objects and advantages will be more apparent to those skilled in the art from the following description of the accompanying drawings in which: a

Fig. 1 is a side elevation of the forward portion of a four cylinder locomotive of the single frame type with my improved driving spring arrangement incorporated therein;

Fig. 2 is a transverse section taken on the line 2-2 of Fig. 1;

Fig. 3 is a transverse section taken on the line 3-3 of Fig. 1;

Fig. 4 is a vertical longitudinal section taken on the line 4--4 of Fig. 3 showing my improved spring hanger arrangement; 7

Fig. 5 is an enlarged fragmentary view of the upper end of the spring hanger showing its supporting attachment to the outer end of the main driving spring.

In the particular embodiment of the invention, such as is disclosed herein merely for the purpose of illustrating one specific form among possible others that the invention might take in 55 practice, I have shown in Fig; 1 a locomotive of end with a recess 28 for receiving a cylindrical the general type described in the McCarroll Patent 1,622,917 in which a single, preferably integrally cast, frame I has forward and rear sets of cylinders 2 and 3 for driving respectively a forward set of drivers 4 and a similar rear set of 5. drivers (not shown) through usual piston rods 6 and l and usual connecting and driving rods not shown. A boiler 8 is suitably supported upon usual cylinder saddles of the forward and rear cylinder structures while a leading truck 9 is also 10 preferably employedto insure proper support of the frame and boiler. Each of the driving boxes such as I I and I2, suitably guided in pedestals I5, is provided with identical driving box saddles l6 comprising upward extensions of the driving 15, boxes. Each-of'the driving springs such as I! and I8 is identically supported upon the driving box saddles i6, and hence the description of one such support will suffice for all. As seen in the transverse section of Fig. 2, the spring I! has a 20 spring band 2| provided with laterally projecting trunnions 22 and 23 supported in suitable arcuate seats 24, Fig. 1. The inner trunnion 22 is provided with a lip 25, Fig. 2, so that the inner up,-

ward extension or saddle element 26, suitably re- 5 inforced at 21, resists either inward or outer lateral forces. As a result of this improved trunnion type spring band, it is seen that the driving spring I1 is adapted to be appreciably lower than would be the case if the lower portion of the 30 spring band was seated directly on top of the usual spring saddle.

The forward end of spring I! has a spring hanger 28a, Figs. 3 and 5, provided at its closed projection 29 of a hardened semi-spherical Wearing member 39. This member is supported on a suitable spring clip 3| having a seat 32 of larger radius than the semi-spherical surface of member 30. A portion 33 depends into aligned open- 40 ings formed in the outer ends of the spring leaves. The lower end of the spring hanger 28a.

is connected by a radial steel roller or thimble 34 journalled upon a cross-connecting pin 35. A spring support 36 rests upon the roller 34 while 45 a spring 31 is interposed between support 36 and an under portion of the frame l.

Spring hangers 38 and 39 are constructed similar to hangers 28a but are connected to an equalizing beam 40 (pivoted as at 4| to frame I) through radial rollers corresponding to 34. The spring hangers 42, one on each side 'of the frame l, are cross-connected by transverse equalizing beams generally indicated at 43.

The driving springs for the rear set of drivers together, with their spring hangers and intermediate equalizing beam are identical to the corresponding elements of the forward drivers and hence further detailed description need not be given. These two spring systems for the front and rear sets of drivers are brought into cooperative relation by utilizing the rear cylinder structure broadly as a means of pivotally supporting a pair of equalizing beams 52 which are pivotally supported at 53 to lugs 54 depending from the rear cylinder structure as shown in Fig. 1. The ends of these equalizing beams are each seated in vertical links 51, Fig. 1, which in turn are pivotally supported in the cross beams 43. As a result of this arrangement, it is seen that the driving spring rigging for the forward and rear sets of driversinsures complete cooperation between the two systems with minimum possibility of undesirable forces or conditions arising within the single integral main frame I with its cylinder structures 2 and 3 connected thereto at longitudinally spaced points thereof.

It is also seen that my improved construction permits maximum lateral flexibility consistent with maximum stability and ruggedness. The spring hangers with their removable hardened ball members 30 and the radial sleeves 34 insure the utmost in flexibility without undue wear of the parts, while my improved trunnion type,

tween the same through the instrumentality of the equalizing beams 52 supported beneath the rear cylinder structure 3.

It will of course be understood that various changes in details of construction and arrangement of parts may be made by those skilled in the art without departing from the spirit of the invention as set forth in the appended claims.

I claim:

1. A main driving spring system comprising, in combination, a frame, a spring hanger supported on a main spring and having two side arms depending therefrom, means for connecting together the lower ends of said hanger side arms including a transverse pin and roller journalled thereon, said roller being circular in crosssection and curved in axial sections, and means supported on the curved surface of said roller to connect the same with said frame.

2. The combination set forth in claim 1 further characterized in that the main spring has flat leaves the outer end of one of which has a vertical recess extending downwardly from the upper fiat surface of the leaf, a seat member has a projection removably extending into said recess and is supported by said spring, and a seating member is removably supported in said hanger adapted to rest in said seat member.

. 3. The combination set forth in claim 1 further characterized in that a seat member is supported by said spring and a seating member is removably supported in said hanger and adapted to rest in said seat member, said seat and seating members having semi-spherical engaging surfaces of different radii.

JAMES C. MARIS.

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