US191790A - Improvement in crank-shafts for steam-engines - Google Patents
Improvement in crank-shafts for steam-engines Download PDFInfo
- Publication number
- US191790A US191790A US191790DA US191790A US 191790 A US191790 A US 191790A US 191790D A US191790D A US 191790DA US 191790 A US191790 A US 191790A
- Authority
- US
- United States
- Prior art keywords
- crank
- shafts
- engines
- steam
- improvement
- 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
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 229910001369 Brass Inorganic materials 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000010951 brass Substances 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000005728 strengthening Methods 0.000 description 2
Images
Classifications
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- 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
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C11/00—Pivots; Pivotal connections
- F16C11/02—Trunnions; Crank-pins
-
- 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
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C3/00—Shafts; Axles; Cranks; Eccentrics
- F16C3/04—Crankshafts, eccentric-shafts; Cranks, eccentrics
- F16C3/06—Crankshafts
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T74/00—Machine element or mechanism
- Y10T74/21—Elements
- Y10T74/2173—Cranks and wrist pins
Definitions
- My invention consists in a method of strengthening that class of engine-shafts which are formed in one piece with the crank.
- FIG. 1 the figure is a plan view of my invention showing the bearings of the shaft uncovered.
- crank-shafts forged in one piece, and having the crank located at or near the center of their length are extremely liable to break at the neck of the crank; because, first, the whole labor of the engine passes through these points, and it is often very unequally divided between the two overhanging ends of the shaft; second, it is impossible to weld up and hammer the material at the neck as thoroughly as at the other points in the shaft.
- the danger of breakage is increased, also, in that form of engine in which the shaft has but two bearings, one each side of the crank, the power being taken off from pulleys or wheels upon the overhanging ends of the shaft, as indicated in dotted lines in the drawing. It is to this class of shafts that my invention is especially adapted.
- I form enlargements or upon the shaft A A, directly at the neck of the crank, extending a short distance into the main boxes or pillow-blocks F, and forming part of the journal. This increases the amount of material at the point of least strength and greatest strain, while at the same time the general dimensions and weight of the parts are not thereby changed.
- crankshafts which have the crank formed in one piece therewith, and the journals located close to the crank, the enlargement a directly in the neck of the crank, and forming part of the journal, substantially as and for the purposes set forth.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
Description
n. A. WOODIBTJRY CRANK-ISHAFTS FOR STEAM-ENGINES. No. 191,790. Patented J'gne 12,1877.
=Trii 17.1%.. L
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WNW/[8858p 5% I UNITED STATES PATENTII OFFICE,
DANIEL A. WOODBURY, OF ROCHESTER, NEW YORK.
IMPROVEMENT IN CRA NK-SHAFTS FOR STEAM-ENGINES.
Specification forming part of Letters Patent N 0. 191,790, dated J one 12, 1877; application filed May 18, 1877.
To all whom it may concern Be it known'that I, DANIEL A. WOODBURY, of Rochester, in the county of Monroe and State of New York, have invented a new and useful Improvement in Crank-Shafts for Steam Engines, of which the following is a specificatiOn:
My invention consists in a method of strengthening that class of engine-shafts which are formed in one piece with the crank.
In the drawings, the figure is a plan view of my invention showing the bearings of the shaft uncovered.
It is well known by practical engineers that crank-shafts forged in one piece, and having the crank located at or near the center of their length, are extremely liable to break at the neck of the crank; because, first, the whole labor of the engine passes through these points, and it is often very unequally divided between the two overhanging ends of the shaft; second, it is impossible to weld up and hammer the material at the neck as thoroughly as at the other points in the shaft. The danger of breakage is increased, also, in that form of engine in which the shaft has but two bearings, one each side of the crank, the power being taken off from pulleys or wheels upon the overhanging ends of the shaft, as indicated in dotted lines in the drawing. It is to this class of shafts that my invention is especially adapted.
To obviate the difficulties named, I form enlargements or upon the shaft A A, directly at the neck of the crank, extending a short distance into the main boxes or pillow-blocks F, and forming part of the journal. This increases the amount of material at the point of least strength and greatest strain, while at the same time the general dimensions and weight of the parts are not thereby changed.
Ido not intend to confine myself to the special application of the enlargement a to forged shafts, as it may be used with equal advantage upon cast shafts, either of iron, brass, or steel.
What I claim as my invention, and desire to secure by Letters Patent, is-- As an improvement in that class of crankshafts which have the crank formed in one piece therewith, and the journals located close to the crank, the enlargement a directly in the neck of the crank, and forming part of the journal, substantially as and for the purposes set forth.
D. A. WOODBURY.
Witnesses:
WM. A. MONTGOMERY, W. J. OREELMAN.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US191790A true US191790A (en) | 1877-06-12 |
Family
ID=2261197
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US191790D Expired - Lifetime US191790A (en) | Improvement in crank-shafts for steam-engines |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US191790A (en) |
-
0
- US US191790D patent/US191790A/en not_active Expired - Lifetime
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