US38608A - Improvement in crank-motion - Google Patents
Improvement in crank-motion Download PDFInfo
- Publication number
- US38608A US38608A US38608DA US38608A US 38608 A US38608 A US 38608A US 38608D A US38608D A US 38608DA US 38608 A US38608 A US 38608A
- Authority
- US
- United States
- Prior art keywords
- crank
- motion
- improvement
- spring
- arm
- 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
- 229910001369 Brass Inorganic materials 0.000 description 2
- 210000003813 Thumb Anatomy 0.000 description 2
- 239000010951 brass Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000002023 wood Substances 0.000 description 2
Images
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
- F16H—GEARING
- F16H21/00—Gearings comprising primarily only links or levers, with or without slides
- F16H21/10—Gearings comprising primarily only links or levers, with or without slides all movement being in, or parallel to, a single plane
- F16H21/16—Gearings comprising primarily only links or levers, with or without slides all movement being in, or parallel to, a single plane for interconverting rotary motion and reciprocating motion
- F16H21/18—Crank gearings; Eccentric gearings
- F16H21/38—Crank gearings; Eccentric gearings with means for temporary energy accumulation, e.g. to overcome dead-centre positions
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- 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
- Y10T74/18144—Overcoming dead center
Definitions
- THOMAS SHAW OF PHILADELPHIA, PENNSYLVANIA.
- My invention consists in the application and situation of a spring to operate as hereinafter described.
- A is a block of wood, upon which is hinged a crank, B, bell-crank D, and spring E, the whole of which are connected to the rod C and swung upon thumb screws G.
- F F are brass boxes, secured to the end of spring E, through which pass screws G.
- H is an arm of the bell-crank D, intended to be operated by the hand.
- crank B The position of the crank B is secured by its being the natural position of the spring E- t. e., the position it would take when at liberty to do so. It will be seen that the crank B is now in a proper position to be revolved by arm C, and when drawn forcibly down by said arm, it (the crank) will bc thrown over the deadcenter, and in the position of one-half revolution from its first position, b5 means of the spring E, for the reason aforesaid.
- This effect is secured by hnging the end of spring E (farthest from the crank) at a point at an angle of forty-tive degrees from the line of motion of arm C, which position throws the crank at an angle of about forty-tive degrees from the aforesaid line. ⁇ The power is taken up at the strongest point of the crank and given out at the weakest, which so regulates the power as to render in many cases the -[ly-wheel .unnecessary.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
Description
UNITED STATES PATENT OFFICE.
THOMAS SHAW, OF PHILADELPHIA, PENNSYLVANIA.
IMPROVEMENT IN CPtANK-MOTION.
Specification forming part of Letters Patent No. 38,608, dated May 19, 1863.
To @ZZ whom it may concern:
Be it known that I, THoMAs SHAW, of the city and county of Philadelphia, and State of Pennsylvania, have invented a new and Improved Mode of `.Assisting the Crank Over the Dead-Center; vand I hereby declare the following to be a full, clear, and exact description of the saine, reference being had to the accompanying drawing, and to the letters of reference marked thereon.
My invention consists in the application and situation of a spring to operate as hereinafter described.
In order to enable others to practice my in vention, I will proceed to describe its construction and operation.
On reference to the accompanying drawing, which forms a part of the specification, A is a block of wood, upon which is hinged a crank, B, bell-crank D, and spring E, the whole of which are connected to the rod C and swung upon thumb screws G.
F F are brass boxes, secured to the end of spring E, through which pass screws G.
H is an arm of the bell-crank D, intended to be operated by the hand.
The position of the crank B is secured by its being the natural position of the spring E- t. e., the position it would take when at liberty to do so. It will be seen that the crank B is now in a proper position to be revolved by arm C, and when drawn forcibly down by said arm, it (the crank) will bc thrown over the deadcenter, and in the position of one-half revolution from its first position, b5 means of the spring E, for the reason aforesaid. This effect is secured by hnging the end of spring E (farthest from the crank) at a point at an angle of forty-tive degrees from the line of motion of arm C, which position throws the crank at an angle of about forty-tive degrees from the aforesaid line. `The power is taken up at the strongest point of the crank and given out at the weakest, which so regulates the power as to render in many cases the -[ly-wheel .unnecessary.
I do not claim, broadly, the employment of springs to assist the crank over the deadcen ter; but
What I do claim, and desire to secure by Izetters Patent, is-
The combinations of metallic spring E with crank B and arm C, in the manner and for the purpose herein set forth.
THOMAS SHAW.
' Witnesses:
HUGH CLARK, BENJAMIN AINswoE'rH.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US38608A true US38608A (en) | 1863-05-19 |
Family
ID=2108179
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US38608D Expired - Lifetime US38608A (en) | Improvement in crank-motion |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US38608A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020106953A1 (en) * | 2000-07-06 | 2002-08-08 | Young-Hwa Kim | Penetration resistant fabric with multiple layer guard plate assemblies and method of making the same |
-
0
- US US38608D patent/US38608A/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020106953A1 (en) * | 2000-07-06 | 2002-08-08 | Young-Hwa Kim | Penetration resistant fabric with multiple layer guard plate assemblies and method of making the same |
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