US51861A - Improved carriage-jack - Google Patents
Improved carriage-jack Download PDFInfo
- Publication number
- US51861A US51861A US51861DA US51861A US 51861 A US51861 A US 51861A US 51861D A US51861D A US 51861DA US 51861 A US51861 A US 51861A
- Authority
- US
- United States
- Prior art keywords
- jack
- lever
- toggle
- improved carriage
- elevator
- 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
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 238000005452 bending Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000036633 rest Effects 0.000 description 2
- 239000002023 wood Substances 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
- the object of my invention is the production of a powerful, compact, and convenient lifting-jack for lifting' carriages, and for other purposes where such a mechanism is required.
- My invention consists in rendering ⁇ available the supporting and raising power of the toggle when operated by the lever, or its equivalent for the purpose.
- the operating parts of my invention are the elevator a, the toggle d c, the lever b, and the sliding ⁇ fulcrum f. These are appropriately set in the frame which has the diagonal crossbar P, having the slot in which works the sliding fulcrum.
- the elevator has a graduated top in order to beadaptable to the different parts ot' carriages and to carriages of different heights.
- the lever works and is held in the slot s cut in one of the upright portions of the frame n.
- the entire device rests on the base t.
- My invention operates in the following inanner: When the lever bis pressed downward the fulcrum slides along the slot, thus forcing the lever inward somewhat so as to straighten the toggle. Pressure upon the elevator has then no tendency to raise the power end of the lever; but by lifting the lever slightly the Weight on the elevator will contract the toggle and allow the jack to be removed from under the carriage. elevator, and is so combined with the lever and so arranged as to be operated by it in either direction, backward or forward.
- My invention may be made ot' wood or iron or any suitable material.
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Handcart (AREA)
Description
UNITED STATES PATENT OFFICE.
J. C. PLUMER, OF BOSTON, MASSACHUSETTS.
IMPROVED CARRIAGE-JACK.
Specification forming part of Letters Patent No. 51,86] dated January 2, 1866.
To all whom it may concern:
Be it known that I, J. C. PLUMER, of Boston, in the Commonweath of Massachusetts, have invented a new and Improved Carriage- Jack for Lifting Garriages and I hereby declare the following` to be a full, clear, and exact description of the same, reference being had to the accompanying drawings, making part of this specification, of which- Figure 1 shows a perspective view of my invention Fig. 2, a side view of the operating' portions with the toggle-joint crooked; Fig. 3, the saine with the toggle straightened.
The object of my invention is the production of a powerful, compact, and convenient lifting-jack for lifting' carriages, and for other purposes where such a mechanism is required.
My invention consists in rendering` available the supporting and raising power of the toggle when operated by the lever, or its equivalent for the purpose.
The operating parts of my invention are the elevator a, the toggle d c, the lever b, and the sliding` fulcrum f. These are appropriately set in the frame which has the diagonal crossbar P, having the slot in which works the sliding fulcrum. ,The elevator has a graduated top in order to beadaptable to the different parts ot' carriages and to carriages of different heights. The lever works and is held in the slot s cut in one of the upright portions of the frame n. The entire device rests on the base t.
My invention operates in the following inanner: When the lever bis pressed downward the fulcrum slides along the slot, thus forcing the lever inward somewhat so as to straighten the toggle. Pressure upon the elevator has then no tendency to raise the power end of the lever; but by lifting the lever slightly the Weight on the elevator will contract the toggle and allow the jack to be removed from under the carriage. elevator, and is so combined with the lever and so arranged as to be operated by it in either direction, backward or forward.
I construct the operative part of my invention by coinhinin g the toggle and lever in the manner indicated, so that the bending and straightening of the toggle shall depress and elevate the part ct, and by fitting the lever with 4the sliding Iulcrum. This I secure in a frame having the diagonal cross-bar P.
My invention may be made ot' wood or iron or any suitable material.
VVh-at I claim as my invention, and desire to secure by Letters Patent, is-
In the construction of lifting-jacks, the use ofthe toggle in conjunction With a lever with sliding fulcrum, for the purpose specified.
J. O. PLUMER.
Witnesses:
WILLIAM H. CLIFFORD, HENRY WEBER.
The toggle supports the y
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US51861A true US51861A (en) | 1866-01-02 |
Family
ID=2121410
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US51861D Expired - Lifetime US51861A (en) | Improved carriage-jack |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US51861A (en) |
-
0
- US US51861D patent/US51861A/en not_active Expired - Lifetime
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