US157231A - Improvement in exhaust-nozzles - Google Patents
Improvement in exhaust-nozzles Download PDFInfo
- Publication number
- US157231A US157231A US157231DA US157231A US 157231 A US157231 A US 157231A US 157231D A US157231D A US 157231DA US 157231 A US157231 A US 157231A
- Authority
- US
- United States
- Prior art keywords
- exhaust
- nozzles
- shutters
- improvement
- nozzle
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000010276 construction Methods 0.000 description 1
- 230000003137 locomotive effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
- F16K3/02—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor
- F16K3/03—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor with a closure member in the form of an iris-diaphragm
Definitions
- My invention relates to certain improvements whereby the engineer of a locomotive is enabled to vary the dimensions of the exhaust-nozzle, and thus control the velocity of the exhaust steam in its escape into the smokestack, and thereby regulate the draft and the steam-generating capacity of the boiler, and the back pressure on the steam-pistons.
- the invention consists in the combination with the exhaust pipe, of a divided nozzle composed of two shutters pivoted at or near the middle of their depth, in a frame attached to the exhaust-pipe, and provided with a lever for opening and closing them, so that the dimensions of the nozzle may be varied, and the velocity of the exhaust steam regulated accordingly.
- Figure 1 is a side View of my invention. big. 2 is a side view at right angles to Fig. 1. Fig. 3 is a top view. Fig. 4 is a vertical section.
- the exhaust-pipe A is of any suitable construction, and to its end is attached a frame, 0, to which the working parts of the nozzle are attached.
- the adjustable nozzle consists of two shutters, B B, the inner edge of each of which is concave, and terminates in a semi circular edge, b, so that when the edges of the two shutters are in contact with each other, a circular opening is formed between them, as shown in Fig. 3.
- Each shutter is attached to a shaft, D, the ends of which have their bearin gs in the side pieces of the frame 0, so that the shutters may oscillate between said side pieces.
- At one end of each shaft is an arm, F, one end of which is rigidly attached to the shaft, and the other end extends toward the opposite end of the frame (J.
- the inner ends of the arms F meet about midway of the length of the frame 0, and are connected to each other by means of a pin or stud, g, 011 one of the arms working in a slot, h, in the other arm.
- One of the arms F is in the form of a lever with the shaft'D for its fulcrum.
- the long arm 1 of this lever is connected by suitable connecting devices with the cab, so as to be under the control of the engineer.
- the shutters B When motion is applied to the long arm 1 of the lever, in the direction of the arrow in Fig. l, the shutters B are caused to turn on their axes, so as to move their lower edges toward each other, and their upper edges from each other, thus changing the tapering form of the space between the shutters, and increasing the dimensions of the opening between the upper edges.
- the engineer is enabled, at pleasure, to vary the dimensions of the exhaust-nozzle, and thereby control the velocity of the exhaust steam, and regulate the draft and the steam-generating capacity, as before described.
- One of these adjustable nozzles may be applied to each cylinder, or the exhaust-pipes from both cylinders may be joined in one pipe, and the nozzle applied to theend of such pipe.
- the adjustable shutters B attached to the shafts D, and having both their upper and their lower edges moving in arcs of circles, substantially as shown and described.
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Nozzles (AREA)
Description
' 'a. SEW ELL.
I Exhaust-Nozzles. N-0.157,231. Patented Nov. 24,1874.
W-unauu mm am UNITED STATES PATENT OFFICE.
GEORGE s wELL, or BROOKLYN, NEW YORK.
IMPROVEMENT IN EXHAUST-NOZZLES.
Specification forming part of Letters Patent No. 157,231, dated November 24, 1874; application filed November 7, 1874.
CASE B.
To all whom it may concern:
Be it known that l, GEORGE SEwELL, of Brooklyn, in the county of Kings and State of New York, have invented certain new and useful Improvements in Exhaust- Nozzles; and I do hereby declare that the followingis a full, clear, and exact description of the same, reference being had to the accompanying drawing forming part of this specification.
My invention relates to certain improvements whereby the engineer of a locomotive is enabled to vary the dimensions of the exhaust-nozzle, and thus control the velocity of the exhaust steam in its escape into the smokestack, and thereby regulate the draft and the steam-generating capacity of the boiler, and the back pressure on the steam-pistons.
The invention consists in the combination with the exhaust pipe, of a divided nozzle composed of two shutters pivoted at or near the middle of their depth, in a frame attached to the exhaust-pipe, and provided with a lever for opening and closing them, so that the dimensions of the nozzle may be varied, and the velocity of the exhaust steam regulated accordingly.
In the accompanying drawing, Figure 1 is a side View of my invention. big. 2 is a side view at right angles to Fig. 1. Fig. 3 is a top view. Fig. 4 is a vertical section.
The exhaust-pipe A is of any suitable construction, and to its end is attached a frame, 0, to which the working parts of the nozzle are attached. The adjustable nozzle consists of two shutters, B B, the inner edge of each of which is concave, and terminates in a semi circular edge, b, so that when the edges of the two shutters are in contact with each other, a circular opening is formed between them, as shown in Fig. 3. Each shutter is attached to a shaft, D, the ends of which have their bearin gs in the side pieces of the frame 0, so that the shutters may oscillate between said side pieces. At one end of each shaft is an arm, F, one end of which is rigidly attached to the shaft, and the other end extends toward the opposite end of the frame (J. The inner ends of the arms F meet about midway of the length of the frame 0, and are connected to each other by means of a pin or stud, g, 011 one of the arms working in a slot, h, in the other arm. One of the arms F is in the form of a lever with the shaft'D for its fulcrum. The long arm 1 of this lever is connected by suitable connecting devices with the cab, so as to be under the control of the engineer. By the attachment of the shafts to the shutters midway of their width, instead of to their lower edges, both the upper and lower edges of each shutter move in an arc of a circle, the lower edge working in a concave surface, i, in the frame so as to fit snugly, and prevent leakage at those parts.
When motion is applied to the long arm 1 of the lever, in the direction of the arrow in Fig. l, the shutters B are caused to turn on their axes, so as to move their lower edges toward each other, and their upper edges from each other, thus changing the tapering form of the space between the shutters, and increasing the dimensions of the opening between the upper edges. Thus the engineer is enabled, at pleasure, to vary the dimensions of the exhaust-nozzle, and thereby control the velocity of the exhaust steam, and regulate the draft and the steam-generating capacity, as before described.
One of these adjustable nozzles may be applied to each cylinder, or the exhaust-pipes from both cylinders may be joined in one pipe, and the nozzle applied to theend of such pipe.
That I claim as new, and desire to secure by Letters Patent, is
l. The adjustable shutters B attached to the shafts D, and having both their upper and their lower edges moving in arcs of circles, substantially as shown and described.
2. The combination of the lever 1, arms F F, shafts D D, shutters B B, frame 0, and exhaust-pipe A, substantially as shown and described.
GEORGE SEWELL.
Witnesses MIoHAEL RYAN, BENJAMIN W. HOFFMAN.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US157231A true US157231A (en) | 1874-11-24 |
Family
ID=2226641
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US157231D Expired - Lifetime US157231A (en) | Improvement in exhaust-nozzles |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US157231A (en) |
-
0
- US US157231D patent/US157231A/en not_active Expired - Lifetime
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