US1248357A - Locomotive reversing device. - Google Patents

Description

B B. McENTIRE.

LOCOMOTIVE maysasms DEVICE.

APPLICATIDN FILED FEB- 8' h? Patented Nov, 27, 191?,

3 SHEETS-SHEET I.

B. B. McENTlRE.

LOCOMOTIVE REVERSING DEVICE.

APPLICATION FILED FEB. 8. 1916.

Patented Nov, 27, 11917,

3 SHEETS-SHEET 2.

K WM

w vhwo neo BARNIE B. MOENIIRE, 0F IRlVIO, SOUTH CAROLINA.

LOCOMOTIVE REVERSING DEVICE.

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Application filed February 8, 1916. Serial No. 77,043.

the character describedwherein the shifting lever may be operated by a steamactuated piston, such steam actuated PlStOIl serving also to actuatethe'piston in a cylinder containing water or' other liquid, the same serving as a dash pot to prevent or reduce sudden shocks and to take up lost motion.

A further object of the invention is to simplify and improve the construction and arrangement of parts constituting the improved device. I With these and other ends in view which will readily appear as the nature of the invention isbetter understood, the same consists in the improvedconstruction and novel arrangement and combination of parts which will be hereinafter fully described and particularly pointed out in the claim.

In the accompanying drawings has been illustrated a simple and preferred form of the invention, it being, however, understood that no limitation is necessarily made to the precise structural details therein exhibited, butthat changes, alterations and modifica tions within'the scope of the claim may be resorted to when desired.

In the drawings,

Figure 1 is aview in side elevation showing a device constructed in accordance with the invention and showing also, in section, a platform or supporting member for the said device and a portion of the locomotiveboiler below which the platform is arranged.

Fig. 2 is a sectional plan view taken on the line 22 in Fig. 1.

Fig. 3 is a longitudinal vertical sectional view taken on the line 3-3 in Fig.2.

Fig. 4 is a transverse sectional view taken on the line 4-4 in Fig. 2.

Specification of Letters Patent.

Patented Nov. at, we.

Fig. 5 is a sectional detail view taken on the line 5-5 in Fig. 4.

' Fig. 6 is a sectional view taken on the line 66 in Fig. 3. i

Fig. 7 is a sectional detail the line 77 in Fig. 2.

Fig. 8 is a sectional detail view taken on the line 8-8 in Fig. 2.

Fig. 9 is a sectional detail view of the valve 44.

Corresponding parts in the several figures are denoted by like characters of reference. The steam cylinder 15 has a valve chest 16 in which operates a rocking valve 17 having a steam chamber 18 normally communicating with the steam intake 19. to which live steam is supplied through a pipe 20. The valve 17 has a port 21 which may be alterview taken on nately placed in communication with the ducts or passages 22 leading to opposite ends of the cylinder, or said port may occupyla neutral position, as seen in Fig. 3. The valve 17 also has a chamber 23 communicating with the exhaust pipe 24L, the walls of said chamber being provided with ports 25 which may be alternately placed in communication with the two ends of the cylinder through the ducts or passages 22, it being understood thatwhen the valve is rocked from its neutral position one end of the cylinder will be placed in communication with the steam intake and the other with the exhaust. The valve for the purpose ofrocking the same is provided with a crank 26 which is connected by a rod 27 with a controlling lever 28 which is located in a high position conveniently accessible to the engineer. The said lever may be arranged in any well known manner to be operated either manually or by the foot of the operator. An oil cup 29 supplies lubricant to the valve 17.

A second cylinder 30 which is of substantially the same length as the cylinder 15, but which is preferably of a larger cross sectional area, is located in axial alinement' head of the cylinder 15 within which it carries the piston 33, the latter thus operating in unison with the piston 31 so that when the piston 33 is forced from one end of the cylinder, 15 to the other end the piston 31 will be moved correspondingly in the cylin der 30. The cylinder 30 supports a water tank 36 which is in communication with the exhaust pipe 24 through a branch 37 having a check valve 38 and a strainer 39, the tank 36 serving as a condensing ta nle The tank 86 is connected with the two ends of the cylinder30 by means of pipes 40, each having a check valve 41, the cylinder 30 being thus.

supplied with water to its full capacity. Air cocks 42 are mounted in the ends or heads of the cylinder 30 to provide for the escape of air contained in the cyli der to the atmosphere when the cylinder is being filled with water. The two ends of the cylinder 30 are placed in communication with each other through the medium of a pipe 43 having a valve 44, the stem of which isprovided with a crank 45, see Fig. 2, whereby the valve may be" actuated. The valve when in a neutral position, as seen in Fig. 2, will obstruct communication between the ends of the cylinder 30, but communication will be opened when the valve is rocked in either direction. The crank 45 is connected'by a rod 45 with the crank 26 of the valve 17 thus causing the said valves 17 and 44 to be operated in unison.

, The piston rod 32 has an extension memher- 47 which is adjustably connected therewith by a sleeve 48 engaging right and left threaded portions of the members 32 and 47, as best seen in Fig. 1, the extension member 47 being connected by a pitman 49 with the shifting lever 50 of the link motion which, as a whole, is designated by L. The shifting lever 50 is connected by a rod 51 with an indicator 52 pivotally mounted on a dial 53 and serving to indicate the position of the link motionwhether the latter be adjusted to ffforward or to reverse.

The piston rod 32 is guided in adjustable bearings 54 and on the piston between said bearings is mounted a sleeve 55 having a radially extending arm 56 with which is connected one end of a rod 57 having a turn buckle 58, whereby the length thereof may be adjusted, said rod having a terminal slot 59 which embraces the crank 45 of the valve 44. The slot 59 is of a length approximately equalto the stroke of the piston rod so that in either extreme position of the pis ton rod'one end wall of the slot 59 willengage the crank 45, permitting said crank to be moved in the direction of the opposite end wall of the slot when actuated, together with the valve 17, by means of the lever 2-3 and related parts. When the valves 44 and 17 are thus actuated the piston rod, under the influence of the steam entering. the cylinder 15 will be moved longitudinally, causing thepiston 31 to displace the water in front thereof as it advances, the water traveling through the pipe 43 having the valve 44 to the other end of the cylinder. By

hand lever 28.

the movement of the piston rod and the rod 57 connected therewith and having the slot engaging the valve stem 45, the valve 44 willbe restored to its; neutral or closed position when the link block reaches the limit of its movement, the valve 17 being likewise restored to neutral position owing to the eonnection'of the crank 26 with the cr ank 45 of the valve 44, Should adjustment of the valves be required while the link block is between the extreme limitsof its movement, such adjustment must obviously be performed by a proper manipulation of the that when adjustment of thelink blockis re'- quired terminating at th extre e limit of its movement, the closure of the valves 24 and 17 will be performed automatically. The lever28. will also be. restored to a neutral position hence the necessity for providing the indicator 52 and dial, 53,121 glance at which will reveal to the engineer the present position of the link motion; ,v

An extension 60 of. the live steam pipe 20, said extension having a valve 61, {is connected with the-tank 36in order that in extremely cold weather the water contained in said tank may be kept fro mlfreezing.

From the foregoing descriptiom taken in connectlon with the drawings hereto annexed, it will be seen that a simple and eifeetive means has been provided whereby the link motion of a locomotive may be mechanically actuated, thus not only relieving the engineer from the severe strain often required to effect the shifting of thelink motion, but also avoiding the possibility of injury'to the operator as now frequently happens. The improved device is simple in construction, and it may be readilyinstalled 1 011 switching and other engines.

Having thus described the invention, what is clalmed as new, 1s

A -device for actuating the shifting lever oi a llnk mot on, said device compris- It will be seen, however,

ing a steam cylinder, a piston operating therein, a water cylinder, a stem connected with the pistonofthe steam cylinder and 7 extending through one end, of the latter and through the two endsofthewater cylinder,

a piston carried on the stem within the water cy inder, a pipe establishing communication between the two ends of the water cylinder, a valve in said pipe having an operating crank, a valve controlling admission oflive steam to, thesteam cylinder, said valve havng an operating crank, a connection between the cranks of the two valves whereby they may be simultaneously operated,- an operating lever connected with the crank of the steam valve, and a member operatively eonnectingthe piston stem with the shifting lever of a link motion, in combination with a sleeve mounted on the piston rod and havmg a radial arm and a rod connected with mamas? said arm in parallel relation to the piston link block reaches the limit of its movement rod and having a slot embracing the crank of in either direction. 11; the Water valve whereby said Water Valve In testimony whereof I affix my signature and related parts including the steam valve in presence of two Witnesses.

may be manually adjusted when the link BARNIE B. MoENTIR-E. block is in an intermediate position and will Witnesses:

be restored to neutral posltion after being O. W. LORIGK,

actuated by the operating lever When the WILIIE HOOK.

Copies of this patent may be obtained for five cents each, by addressing the Gommissioner of Patents. Washington, D. Q.

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