US2020099A - Locomotive cylinder and cylinder saddle construction - Google Patents

Description

Nov. 5, 1935. J, G; BLUNT 2,020,099

LOCOMOTIVE CYLINDER AND CYLINDER SADDLE CONSTRUCTION Filed Nov. 18, 1955 2 sheets-sheet 1 INVENTOR James G. -B/unf' A oRNEY Nov. 5, 1935. .1. G, BLUNT 2,020,099

LOCOMOTIVE CYLINDER AND CYLINDER SADDLE CONSTRUCTION .Filed Nov. 108, 1935 2 sheets-sheet 2 lNVENTOR .7b/mes G. B/un" AA ORNEY Patented Nov. 5, V1935 LOCQF/ETIVE CYLENDER AND CYLINDER SADDLE CNSTRUCTION James G. Blunt, Schenectady, N. Y.

Application November 1S, 1933, Serial No. 698,575

14 Claims.

This invention relates to cylinder and cylinder saddle constructions of locomotives.

An. object of the inventionis to provide an improved working cylinder` and cylinder saddle construction for a locomotive embodying box-shaped reinforcing portions arranged toV aord an increased amount ci strength and to oder an added amount of resistance to stresses imposed upon the construction under operating conditions.

A further object is to provide a construction of the character described which will coinprise a casting wherein reinforcing portions are arranged to afford increased strength at the particular locations which are subjected to great strains and stresses and to present box section portions surrounding cored wall openings to prevent initial and progressive fractures. j

Other and further objects of and advantages achieved by the invention will be apparent from the following detailed description and claims.

In the accompanying drawings, Figure l, at the right, is a front end view of a cylinder7 valve chest and half cylinder saddle construction embodying the present invention, and at the left, is a vertical sectional view taken on the line I-I of Fig. 2, of an adjoining similar cylinder, valve chest and half cylinder saddle construction; Fig. 2, at the right, is a plan View of the construction shown at the right of Fig. l, and at the left, is a hori-l Zontal sectional View taken on the line II--II of Fig. l; Fig. 3 is a section taken on the line III-III of Fig. l; Fig. i, at the right, is a section taken on the line IV-IV of Fig. l, of the rear half, and at the left, a side view. of the front half, of the construction shown at the left of Fig. 1; and Fig. 5, at the right, is a bottom View of the construction shown at the right of Fig. 1, and at the left, is a section taken on the line V-V of Fig. l.

In common locomotive practice twoworking cylinders are employed, disposed at the outersides of the locomotive side frame members, although in some locomotives athird working cylinder is disposed midway between the side frame members. It is a common practice where two working cylinders are employed to form each working cylinder, vits distribution valve chest and a half cylinder saddle portion as a one piece casting and to use two of such castings, one of which is a duplicate oi the other, attached to Veach other. This procedure is followed in the exemplication of this invention herein described for the purpose of illustration, as will presently be apparent. A

These constructions or castings are subjected in service to many and various strains and stresses,

and it is essential that they possess sufficient strength towithstand them with an ample margin of safety. The cylinder saddle portions serve as a frame crossV brace and as a boiler support, and while they must necessarily have suflicient 5 strength for these purposes, they must also have sufcient strength to resist piston thrusts of the opposite working cylinders simultaneously suddenly applied in opposite directions. Furthermore, in such constructions many and various 10 stresses and strains are occasioned by the different temperatures to which the different parts thereof are subjected-as for instance the relatively high temperature to which the tops yof the cylinder saddle portions are subjected due to the 15 smoke box adjacent thereto, the relatively high temperatures to which the valve chests, steam passages and working cylinders are subjected due to the steam therein, and the relatively low atmospheric temperatures to which the outer sides 20 of the constructions are subjected due to the atmosphere, and are occasioned by the sudden changes of temperature, as for instance those caused. by the sudden shutting oif of steam. Furthensuch constructions are usually mounted above a center plate of a four-wheel leading truck,

or an equalizing lever fulcrum of a two-wheel leading truck, and the resistance of the engine truck centering device resolves itself into an upward thrust againstV the under sides of the constructions. These constructions are also sub-Y jected to various other stresses and strains including the shocks of coupling and sudden brake applications, stresses due to centrifugal forces imposed while entering and passing through curves, cross-overs and irregular track, as well as stresses and strains resulting from heat dis A tortions in the smoke box which is attached to the tops of the cylinder saddle portions, from firing up and cooling down the boiler.

Practice has shown that there are certain locations in such constructions as aforementioned which are especially subjected to the aforementioned stresses and strains and which might be termed critical points or locations. It is especially desirable therefore that the constructions 'be reinforced `at these critical locations and the present invention provides novel means affording such reinforcements. More particularly it provides at these critical locations substantially box section formations giving relatively greatstrength and increased resistance to stresses and strains wherejmostl needed,v with-out excessively increaS- ing the weight of the constructions.

While the approved embodiment or exemplication of the invention illustrated in the accompanying drawings, and hereinafter described, is in connection with the commonly used form of cylinder, valve chest and cylinder saddle of the so called half saddle type construction, it will be understood that the invention may also be applied in connection with various differently formed constructions, such as where two or more working cylinders are integrally cast with a saddle in a one piece construction.

Referring in detail to the drawings, a pair of power cylinders, valve chests therefor, and a cylinder saddle therefor are provided by two separate integrally cast constructions indicated generally by the numerals I and 2. One of these constructions is a duplicate of the other, and for the purpose of brevity only the construction I shown at the left of Fig. 1 will be described in detail. The parts of the construction 2 are indicated in the gures by reference designations identical to those of the corresponding parts of the construction I and the several views of the construction 2 may be referred to as illustrative of both of the constructions. K,

The construction I comprises a working cylinder 3, a valve chest 4 and a cylinder lsaddle portion 5. A passageway B is provided for the introduction of live steam directly to the valve chest. A distribution valve (not shown) is provided for the valve chest in the usual manner and inlet steam passageways 'I and exhaust stem passage- .ways 8 are provided, the passageways 8 extending through the cylinder saddle portion 5 and terminating at the top thereof.

The cylinder saddle portion 5 comprises a top wall 9, front and rear end walls I ll and I I respectively, an inner side wall I2, an outer side wall I3 and a bottom wall I4 which extends from the side wall I2 toward the working cylinder 3, and is cut away to provide an opening I4a. The outer side wall I3 is curved at its lower portion and extends substantially horizontal to the valve chest with which it merges. The top wall is extended beyond the end walls I9 and II and outer side wall I3, providing bolting ange portions I5 for bolting the cylinder saddle portion to the smoke box. A longitudinal vertical wall downwardly from the bottom wall I4, providing means for attachment to a locomotive side frame member. All of the aforedescribed parts are of the usual design and construction.

While in the embodiment illustrated a valve chest is shown as an integral part of the construction, it will be understood that any particular valve chest construction is not essential, and that the invention is applicable to constructionsv embodying as'an integral structure only a cylinder and cylinder saddle portion, or cylinders and a cylinder saddle, as for instance in arrangements where slide valves are employed and separate valve chests are secured on the cylinders. In such an arrangement the wall I3 would of course be extended down to the valve seat which would be an integral part of the cylinder in the usual manner. Further while the embodiment illustrated is for a steam locomotive it will be understood that where cylinders and cylinder saddles are used in connection with air operated locomotives the invention would also be applicable.

The following described structure embodies the improvement of the present invention. At the juncture of the top wall 9 and the outer side wall I3, the construction is formed to provide a boxshaped portion defining a cored longitudinally extending horizontal space I8. A vertical wall I9 I5 extends Y,

spaced from and parallel to the wall I3 extends downwardly from the wall 9 and a horizontal wall 20 spaced from the wall 9 extends inwardly from the wall I3 to the bottom edge of the wall I9.

Thus the walls I9 and 2D and the opposite portions 5 of the walls I3 and S respectively form the boxshaped portion defining the cored space I8 which extends substantially the length of the cylinder saddle portion. v

At the juncture of the inner side wall I2 and 10 the bottom wall I4 the construction is formed to provide a box-shaped portion defining a cored longitudinally extending horizontal space 2|. A vertical wall 22 spaced from and parallel to the side wall I2 extends upwardly from the bottom 15 wall I4 and a horizontal wall 23 spaced from and parallel to the wall I4 extends outwardly from the side wall I2 to the top edge of the wall 22. Thus the walls 22 and 23 and the opposite portions of the walls I2 and I4 respectively form 20 the box-shaped portion deiining the cored space 2| which extends substantially the length of the cylinder saddle portion.

The construction is also formed to provide a box-shaped portion defining a cored vertical space 25 24 at the juncture of the wall I I and the Wall I3, which space extends substantially the height of the cylinder saddle portion. A wall 25, spaced from and parallel to the wall` II, extends downwardly from an end of the wall 29, the connec- 30 tion between the walls 25 and 29 being curved, and vertical spaced parallel inner and outer walls 28 and 21 respectively connect at their forward edges with the respective adjacent vertical edges of the wall 25 and at their rear edges with the 35 wall II. The upper end of the wall 2'I connects with a portion of the wall I3 which is opposite and parallel to the wall 25, the upper end of the wall 25 merges with the wall I9, and the upper portion of the outer edge of the wall 25 40 connects with the wall I3. Thus the walls 25, 26 and 21, the portion of the wall I3 opposite the wall 23, and the portion or" the wall II opposite the wall 25 form the box-shaped portion dening the cored space 24.

45 Similarly to and opposite to the space 24 a boxshaped portion is provided defining a cored space 28 at the inner side of the front end wall IG, having walls 29, 38 and 3I, corresponding to the walls 25, 28 and 2'I respectively and portions of 50 the walls I3 and I8. The cored spaces 24 and 28 merge at their upper ends with the cored space I8. The lower ends of the walls 26 and 39 are curved and extend inwardly and substantially horizontally to 'and merge with the Wall 23. 55

A vertical wall 32 extends longitudinally between the walls 25 and 29 a short distance upwardly from the bottom wall I4 to the lower ends of the walls 25 and 29. A substantially horizontal wall 33 extends from the upper edge of the 6o wall 32 outwardly. The middle portion of the wall 33 is provided with an outward extension 33a which connects with the cylinder 3 and is downwardly curved for this purpose at its outer end. ' Iransversely extending walls 34 and 35 extend c5 downwardly from the opposite edges of the extension 33a. The lower portions of the walls 34 and 35 connect the cylinder 3 with the wall I6. The lower ends of the walls 34 and 35 converge and are connected at their lower edges. Thus between 70 the cylinder 3 and the wall I6 at the central portion of the cylinder saddle, the walls 34 and 35 and the extension 33a provide a box-shaped portion defining a transversely extending cored space 36. The cored space 36 is closed at its outer end 75 isi gtogot by Athe cylinder 3, at the lower part ofv its finner end vby the wall I6 and at the upper part of its inner end by the wall 32. j

' Longitudinally extending walls 31 and V38` extend toward the rear and front end walls 4II and I0 respectively from'the inner ends of the . walls 34 and 35. lIt will be apparent that inwardly from the wall 3l a box-shaped portion deiining a cored -space 36a is provided by the wall 31, Athe rear end portions of the walls 3.2 andf33, and an' outer rear portion of the wall I4. Alsoinwardly from the wall 38 a box-shaped portion defining a cored space 36h (similar to the cored space 3611,) is provided by the wall 38, the Vforward end portionsof the walls 32 and` 33 and an =outer front portion of the wall I4. The cored'spaces 36,3611

and 36h merge with each other at their adjacent Y ends.

A vertical -wall 33, spaced from andv parallel to f the wall II, extends from the wall 32 to the wall 22, and a similarly spaced wall 33a extends from the wall 3l to the cylinder 3. The bottom of the wall 25 merges with the wall 39 and connects with the rear ends of the walls 32 and 33. A horizontal wall 43 extends from the upper edge of the wall 39 to the wall II and extends transverselyY of the construction inwardly from the lower end of the wall 26 and merges with the wall 23. There is thus provided by the walls 39 and 40, an inner rear portion of the wall I4 and a lower inner portion of the wall Il, a box-shaped portion dening av cored space 40a. merging at its outer end with the cored space 24 and at its inner end with the cored space 2l. A substantially horizontal wall 4I connects the upper edge of the wall 39a with the wall II, the wall 4I extending transn versely of the construction from the lower end of the wall 2l to a location near the middle of and slightly above the cylinder 3. The walls 39a and I Ik extend downwardy as far as the lower edge of the wall I6, and extend, transversely of the cylinportion of the wall I I provide a box-shaped por-` tion defining a cored space 4m, which space is open to the atmosphere at its outer end immediately above the cylinder 3 and merges with the cored spaces 24 and 36a. The inner forward end portion of the wall 4I connects with the wall 3 3.

At the forward end of the construction a wall 42 spaced from and parallel to the wall IIJ extends from the wall 32 to the wall 22 and a similarly spaced wall 42a extends from the wall 38 to the cylinder 3. The lower end of the wall 29 andthe forward ends of the walls 32 and 33 connect with the wall 42. A horizontal wall 43 extends 'from the upper edge of the wall 42 to the wall II) and extends transversely of the construction inwardly from the lower end of thel wall 36 and merges with the wall 23. 'Ihere is thus provided by the walls 42 and 43, a forward inner portion of the wall I4 and a lower inner portion of the wall I0, Va box-shaped portion dening a cored space 43a similar to the space 46a. The cored space 43a merges at its outer end with the cored space 28 and at its inner end with the cored space 2 I.

A substantially horizontal wall 44 connects the upper edge of the wall 42a with the wall lil. The wall 44 extends transversely of the construction, from the wall 3l to a location near the middleof and spaced slightly above the cylinder 3.` The walls 420, andv I6V are formed correspondinglyA to the walls 39d and II respectively, and extend downwardly and are connected at their lower ends, f`so 'tl1`at the Walls 42m and 44 and alower portion of thewall I0 'form a box-shapedportion deriing a cored space,44a similar to ,the. cored Y vspace dla land with whichcored space 44a the cored spaces 28jan'd 36D merge. The inner rear end portion of the wall 44 connects with the wall 33. r Y "y vHoles 45 are vprovided in the'wall I6,v onevlopy posite each 'of the inner ends of the cored spaces 10 36, 4 la and 44a. Holes 46 are also provided in the top Wall 9 opposite the upper ends ofthe cored spaces 24 and 28. Holes4`l are provided in the end walls II and I6 opposite the rear and front ends respectively of thecored spaces 36a'and 361). 15 Holes 48 are provided inthe wall I2 opposite the ends of the cored spaces 46a and 43a'. ,Thesevarious holes permit the removal of core material from the portions of the cored spaces adjacent thereto during the manufacture of the construc- 20 tion. f It will be noted that the cored spaces are open at their connecting ends to provide communication therebetween, thereby providing intercommunication between all of the cored spaces.` j, 2,5 It will also be noted that by the aforedescribed arrangement the construction is reinforced vby box-shaped portions extending transversely,vlo,n, gitudinally andY vertically, thereby adding ,matee rially to the 'strength of the constructionand 30' adapting it to offer a relatively great amount, of resistance to stresses and strains imposed in any direction and at all of the so called critical'locations. Y.

When the term box-shaped is employed in 35 this description and in the appended claims it refers to the cross` sections of the confining walls taken transversely of the respective cored spaces.

While there has been hereinbefore described an y approved embodiment of the invention it will be 40 understood that many and various changes and modications in form, structure and arrangement of parts may be made without departing from the spirit of the invention and that all such changes and modifications as fall within the spirit 45 of the present invention .as dened in the appended claims are contemplated as a part of this invention.

The invention claimed and desired to be secured by Letters Patent is: 50 1. Aconstruction comprising a cylinder; a half cylinder saddle part of box-like Ashape connected with said cylinder andk including a bottom wall and an inner sidewall extending longitudinally throughout thevlength'of said box-like part; an55 exhaust passageway from the outer side to the inner side and upwardly through the top of saidv part; and a reinforcing angular web spaced from said exhaust passageway adjacent thejuncture of said walls comprising a portion integrally. formed with said side wall, spaced a relatively short distance from and extending substantially parallel to said bottom wall, and a second portion integrally formed with saidV bottom wall,'spaced a relatively short distance from and extending substantially parallel to said side wall providing a box-shaped structure, the juncture between said two portions being parallel to the juncture .between said two walls, said structure dening a cored space relatively small in cross section with- 705' in said part extending substantially the length ofsaid walls and to a substantially equal extent on eachside of the transverse center plane ofl said part.

`2. construction comprising'fa cylinder; and '75E' a cylinder saddle part including a depending wall at the bottom thereof spaced from the inner side of said cylinder and adapted for engagement with a locomotive side frame member, and a plurality 5 of box-shaped portions at the bottom of said part extending between and connecting said wall and said side of said cylinder, one of said portions being disposed at each end of said part and another of said portions being disposed midway between said ends of said part, the last said portion being closed at its end yadjacent said side of said cylinder and said end disposed portions being open to the atmosphere at their ends adjacent said side of said cylinder.

l5 3. An .integral cylinder saddle construction "comprising an end wall; an outer side Wall; and a web adjacent the juncture of said Walls providing a reinforcing box-shaped structure defining a vertical cored space extending along said A juncture within said construction.

"2" 4. An .integral cylinder saddle construction comprising a wall running horizontally in a longitudinal direction; a vertical end wall; vertical side walls connected with said end wall and with said horizontally running wall; a web adjacent the juncture of said horizontal wall and one of said side walls; and a web adjacent the juncture of said end wall and one of said side walls, said Webs providing reinforcing box-shaped strucntures defining respectively horizontal and vertical "cored spaces extending along said respective junctures within said construction.

5. An integral cylinder saddle construction comprising a horizontal bottom wall; a vertical Aside wall connected with said bottom wall; a ver- *tical end wall connected with said bottom wall; a web adjacent the juncture of said bottom wall and said side wall; and a web adjacent the juncture of said bottom wall and said end wall, said 40 Webs providing reinforcing box-shaped structures defining respectively longitudinal horizontal and transverse horizontal cored spaces extending along said respective junctures within said construction. 4,5 6. An integral cylinder saddle construction "comprising top and bottom walls running horizontally in a longitudinal direction; vertical side walls connected with said top and bottom walls; vertical end walls connected with said top and bottom walls and said side walls; a webadjacent the juncture of one of said side walls and one of said horizontally running walls; a web adjacent the juncture of one of said end walls and one of said side walls; and a web adjacent the @juncture of one of said end walls and one of said horizontally running walls, said Webs providing reinforcing box-shaped structures denn-- ing respectively longitudinal horizontal, Vertical and transverse horizontal cored spaces extending along said respective junctures within said "construction 7. An integrally cast construction comprising a cylinder; and a cylinder saddle part including a horizontal bottom wall, a vertical depending wall spaced from the inner side of said cylinder `:and Yadapted for engagement with a locomotive side frame member, and a plurality of webs providing reinforcing box-shaped structures extending between said depending wall and said side of said cylinder and having their upper portions l"extending above said bottom wall.

8. An integral cylinder saddle construction comprising top and Ybottom walls running horizontally in a longitudinal direction; a vertical end 'IlY wall connected with said top and bottomwalls;

vertical side walls connected with said top and bottom walls and with said end wall; and webs providing a system of interconnecting reinforcing box-shaped structures dening respectively a cored spaceadjacent the juncture of said end s wall and one of said side walls, a cored space adjacent the juncture of one of said side walls and one of said horizontally running Walls, and a cored space adjacent the juncture of said end Wall and said bottom wall, said spaces extend- 10 ing along said respective junctures within said, construction.

9. A cylinder saddle construction comprising a wall running horizontally in a longitudinal direction; vertical walls connected with each other 15 and each connected with said horizontally running wall, said Walls defining said construction, and angular webs, one adjacent the juncture of two of said defining walls, and another adjacent another juncture of two of said defining walls 20 forming two reinforcing box-shaped structures providing two angularly disposed cored spaces extending along said junctures within said construction, said structures being connected together at one of their ends and said spaces com- 25 municating with each other at said connected ends.

l0. An integral cylinder saddle construction comprising four contiguous walls providing a hollow construction box-shaped in cross section; a 30 fth Wall joining the edges of said four walls adjacent thereto; and webs adjacent the junctures of said fth wall with said four walls providing a hollow, rectangular ring-shaped, reinforcing structure deiining a continuous cored space along 3 said junctures within said construction.

l1. An integral hollow box-shaped cylinder saddle construction comprising six walls defining said construction; and webs adjacent the edges of two adjacent'walls, each of said webs being inte- 40 grally joined with the two walls meeting at its respective said adjacent edge, the joining lines being spaced from said adjacent edge and running in the same direction therewith, providing two hollow,rrectangular ring-shaped, reinforcing 45 12. A one-piece cast half cylinder saddle con- 5o struction of box-like shape comprising a side wall extending vertically and longitudinally; a second wall connected with said side wall at an angle thereto; an exhaust passageway extending from the outer side to the inner side and upwardly 5 through the top of said construction and a reinforcing angular web spaced from said exhaust passageway adjacent the juncture of said walls comprising a portion integrally formed with said side wall, spaced a relatively short distance from 60 and extending substantially parallel to said second wall, and a second portion integrally formed with said second wall, spaced a relatively short distance from and extending substantially parallel to said side wall providing a box-shaped struc- 65 ture, the juncture between said two portions being parallel to the juncture between said two walls, said structure defining a cored spaced relatively small in cross section within said construction extending substantially the length of said 70 saddle construction comprising a reinforcing web 75,

disposed at a corner of said construction having an edge integrally connected with one of the walls of said construction forming said corner in spaced relation with the two junctures of said Wall with the two other Walls of said construction forming said corner and having its opposite edge integrally connected with said two other walls in spaced relation to said junctures, defining an angular cored space extending along said two junctures. f

14. A one-piece cast hollow box-shaped half cylinder saddle construction comprising an exhaust passageway extending from the outer side to the inner side Yand upwardly through the top of said construction; and a reinforcing web spaced from said exhaust passageway adjacent the juncture between two walls of said construction, having its opposite edges integrally connected respectively to said two walls in spaced rela-v 1y equal extent on each side of the common transl verse center plane of said two walls, said structure being provided with an opening for the removal of core material.

JAMES G. BLUNT.

Images