US129996A - Improvement in crank-expanders - Google Patents
Improvement in crank-expanders Download PDFInfo
- Publication number
- US129996A US129996A US129996DA US129996A US 129996 A US129996 A US 129996A US 129996D A US129996D A US 129996DA US 129996 A US129996 A US 129996A
- Authority
- US
- United States
- Prior art keywords
- crank
- expanders
- cam
- stroke
- 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
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B75/00—Other engines
- F02B75/04—Engines with variable distances between pistons at top dead-centre positions and cylinder heads
- F02B75/048—Engines with variable distances between pistons at top dead-centre positions and cylinder heads by means of a variable crank stroke length
-
- 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
- Y10T74/18—Mechanical movements
- Y10T74/18056—Rotary to or from reciprocating or oscillating
- Y10T74/18208—Crank, pitman, and slide
-
- 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
- Y10T74/2181—Variable
Definitions
- My invention consists in a cam placed on a crank inclosed ⁇ Within a frame, so that as the crank in its revolution, when it approaches its position at or nearly at right angles with 'the pitman, Willbe thrown out, thereby lengthening the stroke or leverage of the crank, and when it approaches the dead-points of the stroke the cam Will shorten thehold of the pitman so as to have the crank pass by those points Without increasing the length of the cylinder.
- Figure 1 is a perspective view of my invenvention, and Fig. 2 a sectional view.
- balance-wheel O, bearings or boxes, in whichV the shaft'M runs.
- Ihe cam Gr is made one size larger than the other, so that thelarger side may slip in on one side of the roller H, and the small side presses against the roller, while this Wide side strikes against the pin I. This is to regulate the working on the two sides of the stroke piston.
- the operation of this invention is: as the crank passes around the cam in its movement it increases the length of the pitrnan, and on the outstroke, When a half stroke of the piston is performed, a quarter-revolution of the crank is made, and thus a regular motion is performed, and the push of the piston is, out from the center of the crank-shaft, faster than an average of the stroke, and the outer portion of the stroke is performed in the same manner, and thus the stroke is equalized, the cam bringing the piston in as it passes the center,
- cam G in combination with the crank L, bearings H and I, pitman D, and frame F, substantially as described, and for the purpose
Description
L( SWENSON.
mImprovement in Crank-Expanders.
Patented July 30,1872.
UEITEE STATES PATENT DEEIcE.
LORENS SWENSON,KOF lNORTH CAPE, ASSIGNOR TO HIMSELF AND JOHN B. SMITH, OF MILWAUKEE, WISCONSIN.
iMPROVEM ENT IN 'CRAN K-EXPANDERS.
Specication forming part of Letters Patent No. 129,996, dated July 30, 1872.
SPECIFICATION. A i I, LonENs SWENsoN, of North Cape, in the county of Racine and in theState ot' Wisconsin, have invented certain Improvements in `Orank-Expanders, of which the following is a specication N miur@ cmd vObject of the Invention.
My invention consists in a cam placed on a crank inclosed `Within a frame, so that as the crank in its revolution, when it approaches its position at or nearly at right angles with 'the pitman, Willbe thrown out, thereby lengthening the stroke or leverage of the crank, and when it approaches the dead-points of the stroke the cam Will shorten thehold of the pitman so as to have the crank pass by those points Without increasing the length of the cylinder.
'Description Vof the Drawing forming part of the Specijcaton. Figure 1 is a perspective view of my invenvention, and Fig. 2 a sectional view.
General Description.
balance-wheel; O, bearings or boxes, in whichV the shaft'M runs.
Ihe cam Gr is made one size larger than the other, so that thelarger side may slip in on one side of the roller H, and the small side presses against the roller, while this Wide side strikes against the pin I. This is to regulate the working on the two sides of the stroke piston. The operation of this invention is: as the crank passes around the cam in its movement it increases the length of the pitrnan, and on the outstroke, When a half stroke of the piston is performed, a quarter-revolution of the crank is made, and thus a regular motion is performed, andthe push of the piston is, out from the center of the crank-shaft, faster than an average of the stroke, and the outer portion of the stroke is performed in the same manner, and thus the stroke is equalized, the cam bringing the piston in as it passes the center,
and carryingit out as it approaches the greatest amount of leverage.
Claim.
I claim as my invention- 1. The cam Gr, constructed as described, for the purpose set forth.
2. The cam G, in combination with the crank L, bearings H and I, pitman D, and frame F, substantially as described, and for the purpose
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US129996A true US129996A (en) | 1872-07-30 |
Family
ID=2199414
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US129996D Expired - Lifetime US129996A (en) | Improvement in crank-expanders |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US129996A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070148016A1 (en) * | 2005-12-22 | 2007-06-28 | Newport Medical Instruments, Inc. | Reciprocating drive apparatus and method |
-
0
- US US129996D patent/US129996A/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070148016A1 (en) * | 2005-12-22 | 2007-06-28 | Newport Medical Instruments, Inc. | Reciprocating drive apparatus and method |
| US7654802B2 (en) | 2005-12-22 | 2010-02-02 | Newport Medical Instruments, Inc. | Reciprocating drive apparatus and method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US129996A (en) | Improvement in crank-expanders | |
| US284827A (en) | Counter-balance | |
| US122502A (en) | Improvement in mechanical movements | |
| US451175A (en) | worms | |
| US157765A (en) | Improvement in crank and piston connections for steam-engines | |
| US244826A (en) | Steam-engine | |
| US386950A (en) | geoege w | |
| US177435A (en) | Improvement in adjustable eccentrics for pumps | |
| US382189A (en) | Crank and lever motion | |
| US35966A (en) | Improvement in steam-pumps | |
| US241503A (en) | Oscillating steam-engine | |
| US317584A (en) | Device for converting motion | |
| US273699A (en) | Device for converting motion | |
| US44594A (en) | Improved device for transmitting motion | |
| US290855A (en) | Gearing | |
| US116394A (en) | Improvement in steam-engines | |
| US131940A (en) | Improvement in mechanical movements | |
| US250523A (en) | Geoege w | |
| US600169A (en) | Crank-power | |
| US736889A (en) | Valve-gear for compound locomotives-engines. | |
| US247048A (en) | Direct-acting engine | |
| US283070A (en) | Pump-stroke regulator | |
| US298376A (en) | Mechanical movement | |
| US364828A (en) | John w | |
| US288684A (en) | Steam-engine |