US1592278A - Exhaust pipe - Google Patents

Description

July 13 1926. 1, 7 T. E. LAYDEN EXHAUST PIPE Filed Nov. 22. 1924 2 Sheets-Sheet 1 Inintor 33 gg E v f T. E. LAYDEN' Sheets-Sheet 2 EXHAUST PIPE Filed Nov. 22. 1924 III- III

III

Patented July 13, 1925.

cairn rarest THOMAS E. LAYDEN, 6F TOPEKA, KANSAS.

EXHAUST PIPE.

Application filed November 22, 1924. Serial No. 751,536.

7 My invention relates to exhaust pipes more particularly for use in connection with locomotive boilers and cylinders; and the invention has for its object the provision of an exhaust pipe which will eliminate all possibility of the exhaust steam backing up into the exhaust passages leading from the opposite steam-chests and cylinders of the locomotive; namely a construction which will prevent the possibility of back pressure being created in the opposite cylinders of the locomotive or engine.

The invention also has for its object the provision of an exhaust pipe which, aside from preventing the creation of back pressure, will at the same time discharge the exhaust steam in such manner, relative to the smoke stack, as to properly till the stack to create sufficient draught so as to enable the boiler to produce the amount of steam necessary to operate the locomotive efiiciently and to greater capacity.

The above enumerated objects and advantages, as well as other objects and advantages inherent in the construction, will all be more fully comprehended from the following detailed description of the accompanying drawings, wherein Figure 1 is a transverse sectional view of the front or smoke box end of a locomotive with my improved exhaust pipe in position.

Figure 2 is a longitudinal sectional view of the front or smoke box end of the locomotive, with the steam chests and cylinders omitted, and my improved exhaust pipe shown in side elevation.

Figure 3 is a detailed vertical sectional view taken on the line 33 of Figure 2 looking in the direction of the arrows.

Figure l is a detail sectional view taken on the oilset line H of Figure 3 looking in the direction of the arrows.

Figure 5 is a cross sectional view taken on the line 5 -5of Figure 4L looking downwardly. v

Figure 6 is a; cross sectional view taken on the line 6 6 of Figure 4 looking in the direction of the arrows.-

on the line. 8--=8 ofFigure 10oking down Waldly,

Figure 7 is a across sectional view taken Figure 9 is a perspective view of the exhaust pipe tip, with portions broken away to show the internal construction.

My improved exhaust pipe is designed to permit a complete and easy exhaustion of the exhaust steam from the respective cylinders, or rather the steam chests of the cylinders, without, however, permitting the exhaust steam from the exhaust channels of the cylinder on one side of the locomotive to back up into the exhaust passages from the steam chest or cylinder on the opposite side. of the locomotive, while at the same time conducting the exhaust steam centrally and completely through the smoke stack of the locomotive so as to create suflicient draught whereby steam in the boiler may be quickly obtained and therefore enable the locomotive to operate more efiiciently and to a greater capacity.

The specific exemplification of the invention as disclosed in the drawings comprises the exhaust pipe generally indicated at 15 which is preferably provided at its bottom with a flange 16 whereby the exhaust pipe may be bolted or suitably secured to the cylinder saddle indicated at 17; the cylinder saddle being provided with the usual exhaust channels 18 and 19 which communicate with the valve-chambers or steam- chests 20 and 21, respectively, and which in turn communicate by the usual valved ports with the cylinders 22 and 23, respectively.

The exhaust pipe 15 is provided in the lower end with a substantially centrally located short vertical partition or wall 24; extending transversely of the exhaust pipe and terminating in an upwardly sloping portion 25 which extends toward and constitutes a. portion of one of the side walls of the exhaust pipe as shown in Figures 3 and 7. The wall portions 24, 25 provide a substantially rectangular steam passage 26 at the bottom of the pipe (see Figure 5) which (in the particular illustration) communicates with the steam channel 18. This steam passage 26 in the upper part, of the exhaust pipe extends transversely throughout the width of the-exhaust pipe at arpoint beneath the exhaust pipe tip 27 The upwardly sloping portion 25 is disposed intermediate of and also formed integral withthe curved a d shrine par ions 28x28 hi a e the oppositely curved portioiis 29,

which extend transversely of the wall portion Q-l and unite at one side of the pipe to constitute one of the outer side walls as shown at 29 in Figure '7. These curved portions 2-9, 22) are in spaced relation and thus provide exhaust passage with an hour-glass formation, see Figure 7.

Extending upward in a sloping manner from the wall portion 2% and on both sides of the partitions 29, 29 and in reality constituting a continuation of the partitions 28 are the portions 28, 28, which extend substantially at right angles to the portions 29 'lhese port- ions 28, 28, which extend up from wall. portion 2stare integral vith the two outer side walls 30, 30 which unite with an outer side wall Ill. This side wall 51, which partially slopes inwardly, is partially intersected by the sloping partitien 25 as shown in Figure T.

Th wall and artition lei-nation described provide the lower partof the e);- haust pipe with the exhaust pt I which is disposed substantially parallel with the bottom of the passage 25 and of substantially equal dimensions th rewith as more clearly shown in Figure 5.

As shown in Figure 7, the various outer walls and partitions, all of which are integral with each other and emanate from the r ctangular wall formation shown in Fig ure 5, ause the exhaust pas to be diviued into the two passages 33, 33, on opposite sides of the exhaust gassage 26 see Figure '7.

The *arious outer walls and partitions all unite with the aperturul top wall or partition ill, see liigure S: the top wall having' openings correspondi with the various exhaust passages previously described; and the top is preferably extended beyond the side walls to i'rovide an attaching flange 135 which is shouhlc t 3:3 to receive l1? exhaust pipe lip 27: the latter otherwise secured to exhaust pipe tip 27 ot' a cored block to .rovide th open ngs or nozz es 3e. 36 and 0. 31. passages in the exhaust tip 27 are tlared toward the bottom and thus provide an intermediate bridge 38 adapted to extend across the partitions 29. see Figure at. The bridge 38 tapers toward the bottom, with two of its sides given a greater bevel or taper as shown in Figure thereby providing the inverted cone-shape in cross-section, whereby the steam passing through exhaust passage. 26 (which extends transversely of the exhaust pipe) is split or divided and caused to discharge through the nozzles 36, 36, namely into the two steam jets shown at 39, 39 in Figure l, which discharge more or less centrally into the smoke stack and completely till the same; while the steam issuing from pip The the form restricted The s shown in the openings or nozzles 3T, 3? will be discharged in the form oi tl e jets l0, l0, shown in Figure 2 and also in a manner to com pletely till the smoke stack, with the result that the exhaust steam will induce proper d ht through the lire tubes of the boiler.

it ith my improved exhaust pipe it is apparent that the exhaust steam may freely liow fro 1 ti e exhaust passages of the cyl- SitlLlG' the exhaust steam, in the paration, from. the steam passage being divided into sepier end of the exhaust rant-4, as for example by 38 ot the exhaust tip or exhaust sic-:m from the irged into the passage 3; 2e partitions and wal s is the two pa sages 33 at the exhaust pipe and thence sizzles 37, 3? ol the exhaust i my in'iproved exhaust pipe, at only permitted 'l'ree flow iaust pipe, but possibility of exhaust steam from the cylinder on one side of the locomotive to back up into the steam passages from the cylinder opposite side of the locomotive is e absolutely impossib c, as there is no l the exhaust passage 32 and its llliilflltfi as is clearly evident from the coni ction shown. This coi'istruction, thereire, eliminates all possibility of the creation of back pressure in the opposite exhaust els n aware that exhaust pipes have been I rte the back pressure due cam illlfflmilfi' up" in the opposite exiaunels, hut these exhaust pipes are a construction that the exhaust steal does not properly ill the smoke stat-l: and as a result the draft created was not sullicieul to enable the boiler to produce the steam neccs to operate the locomotive elliciently or to full capacity.

The exhaust pipe most commonly used is constructed with a partition wall which keeps the txhaust steam of each cylinder separated merely to a point midway of the exhaust pipe and the exhaust pipe above the partition has a single passage which is reduced toward the top for the purpose of imparting: force and velocity to the exhaust steam tor the purpose oi" inducing the draft. This reduction or n rrowing' of the passage, however, causes the exhaust steam to back up" into the opposite exhaust channel and thence to the piston on that side of the locomotive, where it interferes with or reduces the effective force.

lVith my improved exhaust pipe, however, the exhaust steam from one cylinder is not permitted to back up into the exhaust channel and passages of the opposite cylinder, but on the other hand is completely conducted out through the smoke stack in a central manner.

I have shown and described the passage 26 as receiving the exhaust steam from the channel 18 and passage 32 as receiving the steam from channel 19, but it is apparent that the exhaust pipe may be turned so as to reverse this condition; and while my exhaust pipe has been shown conducting the exhaust steam through the exhaust pipe tip by two separate passages for either end of each cylinder, it is evident that any number of passages or nozzles may be employed; and that the division of the steam passing up ward through passage 26 may be diii erently accomplished at the upper end of the exhaust pipe from that disclosed, without, however, departing from the spirit of my inven tion which has been described in terms of description and not in terms of limitation, as structural modifications are possible.

Vhat I claim is 1. An exhaust pipe provided with partitions whereby the pipe interior is divided into. a plurality of independent passages throughout the length of the pipe, said partitions being so formed that one of said passages terminates in an opening disposet transversely of the upper end of the pipe while the other passage terminates in openings disposed on opposite sides of the median line of the opening of said first mentioned passage.

2. An exhaust pipe provided with partitions extending from bottom to top Whereby the pipe is divided into a plurality of independent passages extending throughout the length of the pipe, said partitions being so formed as to have one passage extend diametrically of the pipe while the other passage is bisected and terminates in an opening on each side of the median line of the first mentioned passage, and a removable tip provided with tapered openings, one pair of openings communicating with each passage in the pipe whereby the exhaust steam from each passage is dis charged in the form of two oppositely disposed jets.

3. An exhaust pipe provided with partitions whereby the pipe is divided into separate passages, each passage being adapted to receive the exhaust steam from a different cylinder, and a tip provided with a plurality of separate tapered passages, the oppositely disposed tip passages exhausting the steam from a single pipe passage whereby the steam fiowing through the passages oi the pipe is simultaneously discharged in the term of two oppositely disposed jets.

4. An exhaust pipe provided with intersecting walls whereby a plurality of inde pendent passages throughout the pipe are provided from top to bottom, terminating at top in discharge openings, the opening of one passage being disposed transversely of the pipe and restricted at an intermediate point while the other openings are disposed on opposite sides of the restricted portion of the first mentioned opening.

5. An exhaust pipe'provided with intersecting walls and partitions whereby a plurality of independent passages throughout the pipe are provided, terminating at top in discharge openings, the opening o1 one passage being disposed along the transverse axis of the upper end of the pipe while the other openings are disposed on opposite sides of the first mentioned openmg.

6. An exhaust pipe provided with a-plu rality of independent passages extending throughout the length of the pipe, the passages at the base of the pipe being arranged parallel with each other and terminating at the upper end of the pipe in orifices disposed along the transverse axis of the pipe and on opposite sides of said transverse axis, and a tip provided with a plurality of tapered openings, one pair of openings communicating with each pipe passage whereby the exhaust steam from each passage is discharged in the form of two oppositely disposed jets.

THOMAS E. LAYDEN.

Images