US124814A - Improvement in lifting-jacks - Google Patents
Improvement in lifting-jacks Download PDFInfo
- Publication number
- US124814A US124814A US124814DA US124814A US 124814 A US124814 A US 124814A US 124814D A US124814D A US 124814DA US 124814 A US124814 A US 124814A
- Authority
- US
- United States
- Prior art keywords
- lifting
- jacks
- improvement
- leg
- rod
- 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 2
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F15/00—Crowbars or levers
Definitions
- a and B represent the two legs of my liftin g-j ack, pivoted together at their upper ends.
- the bent guide-rod G To either the outer or inner side of the leg A is secured the bent guide-rod G, the upper end of which passes through and pivots the lever D to said'leg A.
- the toothed bar E On the under side of the lever D is attached the toothed bar E, which passes between the leg A and rod 0, the teeth catching on the lower bent end of said rod, to hold the lever in any position.
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Portable Outdoor Equipment (AREA)
Description
J. T. HAMILTON."
Improvement in Lifting Jack.
No. 124,814. PatentedMarch19,1872.
Witnesses: V
/ Inventor g W M%W/QM AM PHOTH'LITIjOER/IPII/C c0. M X USEORNES PROCKSS/ ATENT IMPROVEMENT IN LlFTlNG-JACKS.
Specification forming part of Letters Patent No. 124,814, dated March 19, 1872.
To all whom it may concern:
Be it known that I, JOHN T. HAMILTON, of
Greensburg, in the county of Decatur and in the State of Indiana, have invented certain new and useful Improvements in Lifting-Jacks; and do hereby declare that thefollowing is a full, clear, and exact description thereof, reference being bad to the accompanying drawin g and to the letters of reference marked thereon making a part of this specification.
The nature of my invention consists in the construction and arrangement of a liftingjack, as will be hereinafter more fully set forth. In order to enable others skilled in the art to which my invention appertains to make and. use the same, I will now proceed to describe its construction and operation, referring to the annexed drawing, which represents a side view of my lifting-jack.
A and B, represent the two legs of my liftin g-j ack, pivoted together at their upper ends. To either the outer or inner side of the leg A is secured the bent guide-rod G, the upper end of which passes through and pivots the lever D to said'leg A. On the under side of the lever D is attached the toothed bar E, which passes between the leg A and rod 0, the teeth catching on the lower bent end of said rod, to hold the lever in any position.
' Having thus fully described my invention, what I claim as new, and desire to secure by Letters Patent, is
The within-described liftin g-j ack, consistin g of the leg B and leg A, with rod 0 and lever D connected with the notched bar E acting on the rod 0, all as set forth.
In testimony that I claim the foregoing I have hereunto set my hand this 2d day of February, 1872.
JOHN T. HAMILTON.
Witnesses:
JOHN D. SATER, JOHN L. BRAQKEN.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US124814A true US124814A (en) | 1872-03-19 |
Family
ID=2194244
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US124814D Expired - Lifetime US124814A (en) | Improvement in lifting-jacks |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US124814A (en) |
-
0
- US US124814D patent/US124814A/en not_active Expired - Lifetime
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