US Patent: 407,806
|
| Valve Gear for Engines
|
|
Patentees:
|
| Ellis J. Woolf (exact or similar names) - Minneapolis, Hennepin County, MN |
| John Peebles (exact or similar names) - Minneapolis, Hennepin County, MN |
|
|
Patent Dates:
|
| Applied: |
Feb. 25, 1889 |
| Granted: |
Jul. 30, 1889 |
|
Patent Pictures:
[
1 | 2
]
|
|
|
USPTO (New site tip)
Google Patents
Report data errors or omissions to steward
Joel Havens
"Vintage Machinery" entry for Buffalo Pitts Co.
|
|
Description: |
|
This patent was improved with patent #444,563.
Abstract:
Our invention relates to that class of radial valve-gear in which the amount of lead or advance, variable cut-off, and expansion and reverse action is sought to he obtained from one eccentric, crank, or radial pin to which an arm is attached, having its outer end pivoted in a guide. The general object of our invention is to obtain the nearest possible approximation to an absolutely perfect valve movement, in other words, to secure an almost absolutely equal alternate pressure behind the piston-head for both in and out strokes throughout the whole range of cutoffs and to deliver to the crankpin an equal rotative force at all corresponding points on both the in and out strokes.
Claim:
In a valve-gear, the combination, with an eccentric or crank, of a rigid arm actuated by the eccentric or crank, a guide for said arm constraining it to move in a definite path, and a rod for driving the valve attached to said arm at a point offset from the center lire of the arm's motion. |
|
){kind=link}
){kind=link}