US1354679A - Locomotive - Google Patents

Description

W. A. NEWMAN.

LOCOMOTIVE. APPLICATION FILED SEPT. 9, I9I9.

Patented Oct. 5, 1920.

@GOO

UNITED STATES PATENT OFFICE.

LOCOMOTIVE.

Specification of Letters Patent.

Patented Oct. 5, 1920.

Application filed September 9, 1919. Serial No. 322,765.

To all 'whom it may concern:

Be it known that I, VILLIAM A. NEWMAN, of Notre Dame de Grace, in the city of Montreal, Province of Quebec, Dominionl of Canada, a subject of the King of Great Britain, have invented certain new and useful Improvements in Locomotives; and I' do hereby declare that the following is a full, clear, and exact description thereof.

My invention Arelates particularly to the connection between the cylinder 4and the engine frame.

Heretofore the fastening employed for connecting the cylinders to the frame was suchthat an abnormal amount of twisting and bending was set up at a point where the cylinders are solidly fastened to the frame, which has -resulted in a large amount of breakage at this point, and consequently, in

many cases, accidents. 4'This breakage al-` ways necessitates the withdrawal of the locomotive from service. Another defect in the construction heretofore used was that the eXtreme variations in climatic conditions are not adequately taken care of. Changes in atmospheric temperature cause great stresses the consequent difference in contraction and' expansion results in the above mentioned stresses.

My invention has for its object to take' care of these stresses due to both twisting and bending of the frame, while the engine is running, and the expansion and contraction due to changes in atmospheric temperature, by deliecting strains of contraction and expansion to Vparts of the structure awayv from the connections, and thereby 'envtirely eliminating loose cylinders and practically entirely eliminating frame breakage.

To this end the invention consists of a particular construction of the frames of the locomotive with extension lugs disposed to .co-act with vertical lugs upon the back-Wall of the cylinder and a pair of reinforcement castings, the cylinder casting having brackets to which the lugs of the engine frames are fastened, and longitudinal central lugs to which one side of each casting is fastened, the opposite sides being fastened to the engine frames. This combination and particular arrangement of parts provides means whereby the heavy stresses above mentioned are absorbed and distributed, and frame breakage is eliminated at the point.

For full comprehension of my invention reference must be had to the accompanying drawings in which- Figure l is a transverse vertical sectional view of the main frames of a locomotive taken behind the cylinders; i

Fig. 2 is a. detail longitudinal vertical sectional view taken on line 2 2, Fig. 1;

Fig. 3 is a detail fragmentary sectional view of the back wall of the casting cylinder illustrating one of the lugs formed integrally therewith;

Fig. 4 is a plan view of one of the reinforcement castings;

Fig. 5 is a side elevation thereof as viewed from the same angle as Fig. 2; and

Fig. 6 is an end elevation of this casting.

The engines main-frames are indicated at 6b, the cylinder-'castings or saddle at d and the cylinders at e and The zone of great distortion dueto eXtreme variations in temperature between parts of the cylinder castings and frames is where the frames are fastened immediately adjacent to the cylinder castings. and it is this distortion that causes practically all frame breakage an loosecylinders. My invention overcomes this serious defect by constructing the cylinder cast'- ings with brackets gg, the lower ends of which are formed integrally with horizontal iange c, and engine frames with forwardly extending lugs 7L bolted or otherwise rigidly fastened to the brackets' g. To further absorb the stress and more securely fasten the cylinder castings to the frame the cylinder casting has a series of downwardly extending lugs z' along the under-side of its center line, and a pair of reinforcement members are bolted or otherwise rigidly fastened between the engine frames, the cylinder castings and the lugs z'. These reinforcement members are of right and left hand design, and each consists of a plate-like part j, Ic, Z, :forming three .sides including right angle (thevtwo sides and c), while the thirdside Z is bent obtusely to side t' to conform to one side of each of the lugs i. For certain types of locomotives the' si'd'eZ terminates'at the lugs i, whereas for other types as in the embodiment illustrated the side Z is extended downwardly below the level of the side j and terminates in an arm m. The top side It, side and the obtuse portion of side Z are braced together by a pair of 4webs 'om while the arm' m is braced by a pair of ribs 0. Thesefmembers' are bolted in the space between the under-side ofthe cylinder castings and the engine frames, the top Sides 7c of the" members being bolted or otherwise rigidly fastened as at y; tothe flange c and bottom web c1 of the cylinder castings.A The sides are bolted or otherwise rigidly fastened to the engine frame and flange' gg of the cylinder castings. These fastenings vare preferably a series of bolt-s extending through the sides j, the frames andthe anges y, while the sides Z are' rigidly secured to the lugs by through-bolts r. The s'e reinforcement members are preferably castings althongh they maybe forgings within the spirit of my invention or be 'cast integral with'the'frame'.` This particular construction and arrangement of parts provides for the absorption Vof the stresses arising from extreme variations in'temperature due to Vdifferent climatic conditions met in service, and lthis result is obtained by the fact of the holding power of the particular design of the castings including the continuous crossebrace between theengine frames presented by the webs n, the lugs z' and sides 7' co-acting with the flanges g and the brackets jg and lugs it.

What I claim is as follows:

l. In a locomotive the combination with a pair of spaced main frames and a cylinder saddle, the latter having-a depending portion along the longitudinal center of its underside and substantially midway between the frames, of reinforcement means relatively bracing the frames and cylinder saddle, said means being secured to the under# side'of the saddle and to' the frames andv bearings betweenv the latter and the said de-Y pending portion.

I2. The'c'ombination with the cylinder saddlev and main frames of a locomotive', the main frames presenting substantially verticalsides,` of'r'einforcement mea-'ns separate and Vdistinct from the' cylinder saddle and relatively bracing the frames and frames and cylinder saddle, ysuchl means consisting Vof a pair of reinforcement members rigidly secured between the engine frames and the under side of the cylinder saddle and bearing against the vertical sides of the frames'.

`The combination with the cylinder casting and main franies of locomotive, of means relativelybracing the Y france and back wall of the cylinder castings, such last mentioned means consisting of brackets integrally formed upon the said back-wall and forwardly extending lugs upon the engine frames and rigidly secured to the said brackets. A

4. The combination with the cylinder casting and main frames of a locomotive, of reinforcement means relatively bracing the fra-mes and frames and casting and means relatively bracing the frame and back wall of the cylinder castings, such last mentioned means consisting YofA brackets integrally formed up'onthe said back wall and forwardly extending lugs upon the engine frames and rigidly secured to the said brackets.

5. The combination Vwith the lcylinder casting and main frames of a locomotive, of reinforcement means relatively bracing the frames and frames and casting7 such means consisting of reinforcement members rigidly secured between the engine frames and the under side of the casting, and means relatively bracing the frames and the back wall of the castings, such last mentioned means 'consisting of brackets integrally formed upon the said backwall and rearwardly extending lugs upon the engine frames and rigidly secured to the said 95 brackets.

6; In a locomotive the Vcombination of main frames and cylinder casting, the latter having a plurality of downwardly extending tapered lugs along the longitudinal cen- 100 ter of its underside; a pair of reinforcement members each consisting of two sides in right angular relation and a 'side in obtuse angular relation opposite one of the first mentioned sides, the opposite sides being rela- 10 5 tively braced, means securing the obtuse angular -sides of the member to opposite sides of the taperedY lugs; means rigidly securing the remaining sides to the engine frames and cylinder casting.

7; Ina locomotivethe combination of main frames and cylinder casting, the latter having a plurality of downwardly extending` tapered lugs along the longitudinal center of its under side a pair of reinforce- 115 ment members each consisting of two sides in right angularY relation and a side in obtuse angular relation opposite one of the fir's't mentioned sides, the opposite' 'sides being relatively braced by webs', means secur- 120 ingthe obtuse angular sides of the ineinbers to opposite sidesof the tapered lugs; means rigidly securing the remaining sides tothe engine iranes and cylinder casting; the back wall of thel cylinder castings hav- 125 ing a pair oi brackets and 'the' trainee having forwardly extending lugs, and means rigidly securing the last `mentioned lugs to the brackets. Y Y

8. In a locomotiye the' combination of 130 main frames and cylinder casting, the latter having a plurality of downwardly extending tapered lugs along the longitudinal center of its under side; a pair of reinforcement members each consisting of two sides in right angular relation, and a side in obtuse angular relation opposite one of the first mentioned sides, such last mentioned side having an extension in the form of an arm, and the opposite sides being relatively braced by webs, means securing the obtuse angular sides of the members to opposite sides of the tapered lugs; means rigidly securing the remaining sides to the engine frames and cylinder casting.

9. In a locomotive the combination of main frames and cylinder casting, the latter having a plurality of downwardly extending tapered lugs along the longitudinal center of its under side; a pair of reinforcement members each consisting of two sides in right angular relation and a side in obtuse angular relation opposite one of the first mentioned sides, such last mentioned side having an extension in the form of an arm, and the opposite sides being relatively braced by webs, means securing the obtuse angular si des of the members to opposite sides of the tapered lugs; means rigidly securing the remaining sides to the engine frames and cylinder casting; the back wall of the cylinder castings having a pair of brackets and the frames having rearwardly extending lugs, and means rigidly securing the last mentioned lugs to the brackets.

In testimony whereof I have signed my name to this specification in the presence of two witnesses.

WLLIAM A. NEWMAN.

Witnesses:

GORDON G. COOKE, ViLLIAM J. C. HnwETsoN.

Images