US33608A - Improvement in lifting-jacks - Google Patents
Improvement in lifting-jacks Download PDFInfo
- Publication number
- US33608A US33608A US33608DA US33608A US 33608 A US33608 A US 33608A US 33608D A US33608D A US 33608DA US 33608 A US33608 A US 33608A
- Authority
- US
- United States
- Prior art keywords
- jacks
- lifting
- improvement
- lever
- samuel
- 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
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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 represents a stand or frame piece, upon which two standards B and C are erected.
- D and E are two curved rack-bars, one of which D passes through slots in the standards, with its upper end confined to the lever F.
- the other is pivotedkat its lower end to the standard O, While its upper end plays in a slot in the lever F.
- C is a pin c, upon which the teeth ot bar D catch when it is desirable to station it at any point.
- X is a pin in the lever, upon which the teeth ot the bar E catch when it is to be stationed at any desired point. It will be seen that by means of these two curved rack-bars the lever may be raised and lowered and stationed at any desired point to suit the height of different vehicles with great ease and celerity.
- the curved rack-bars D E, the lever F, and the standards B C,when the same are arranged and constructed as and for the purpose specified.
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Holders For Apparel And Elements Relating To Apparel (AREA)
Description
v UNITED STATES PATENT OFFICE.
SAMUEL SHOEMAKER, OF SMITHVILLE, OHIO.
lMPROVEM ENT l.N LlFTlNG-JACKS.
Specification forming part of Letters Patent No. 33,608, datedOctober 29, 1861.
To a/ZZ whom t may concern:
Beit known that I, SAMUEL SHOEMA'KER, ot Smithville, Wayne county, and State of Ohio, have invented certain new and useful Improvements in Lifting-Jacks; andIdo hereby declare that the following is a full, clear, and exact description of the same, reference being had to the accompanying drawing, and to the letters of reference marked thereon.
In the annexed drawing, making part of this specification, A represents a stand or frame piece, upon which two standards B and C are erected. h
D and E are two curved rack-bars, one of which D passes through slots in the standards, with its upper end confined to the lever F. The other is pivotedkat its lower end to the standard O, While its upper end plays in a slot in the lever F. In the standard C is a pin c, upon which the teeth ot bar D catch when it is desirable to station it at any point. X is a pin in the lever, upon which the teeth ot the bar E catch when it is to be stationed at any desired point. It will be seen that by means of these two curved rack-bars the lever may be raised and lowered and stationed at any desired point to suit the height of different vehicles with great ease and celerity.
Having now fully described my invention, what I claim as new, and desire to secure by Letters Patent, is
The curved rack-bars D E, the lever F, and the standards B C,when the same are arranged and constructed as and for the purpose specified.
SAMUEL SHOEMAKER.
Vitnesses:
C. M. ALEXANDER, I. SAWYER.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US33608A true US33608A (en) | 1861-10-29 |
Family
ID=2103203
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US33608D Expired - Lifetime US33608A (en) | Improvement in lifting-jacks |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US33608A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030132551A1 (en) * | 2002-01-15 | 2003-07-17 | Brown Paul Philip | Injection molding alignment steering utilizing sequential throttles in base-wall-section flow guides |
-
0
- US US33608D patent/US33608A/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030132551A1 (en) * | 2002-01-15 | 2003-07-17 | Brown Paul Philip | Injection molding alignment steering utilizing sequential throttles in base-wall-section flow guides |
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