US161925A - Improvement in lifting-jacks - Google Patents
Improvement in lifting-jacks Download PDFInfo
- Publication number
- US161925A US161925A US161925DA US161925A US 161925 A US161925 A US 161925A US 161925D A US161925D A US 161925DA US 161925 A US161925 A US 161925A
- Authority
- US
- United States
- Prior art keywords
- lifting
- improvement
- jack
- jacks
- link
- 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 2
- 210000002105 tongue Anatomy 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 230000000994 depressogenic effect Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 210000001364 upper extremity Anatomy 0.000 description 1
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
- HERMAN BROGKSMITH OF ST. LOUIS, MISSOURI, ASSIGNOR OF ONE HALF HIS RIGHT TO ERNEST QUAST, OF JERSEYVILLE, ILLINOIS.
- the withindescribed invention is an improved lifting-jack, designed, mainly, for raising heavy vehicles, such as wagons, omnibuses, 860.; and consists in certaindetails of construction, whereby the implement is rendered unusually po wasful, compact, and inexpensive.
- Figure is a side elevation of the jack
- Fig. 2 is an edge view of the same.
- a and B, Fig. 1 represent two sections of the standard, the upper section being adapted to move vertically upon the lower one. the parallelism of the two parts being maintained by the two overlapping tongues a and b, which slide vertically in guide-loops formed by the iron bands 6 e e e.
- the steps on the top of section B are for the purpose of adapting the jack to lift vehicles of difi'erent heights.
- 0 represents a lever pivoted to the movable section B at the point p, and to this lever is pivoted, at the point r, the upper extremity of the link 9, whose lower end is similarly secured to the standard A.
- the device In using the device it is placed under the vehicle, in such a position that the axle will rest on one of the steps of the movable section B.
- the lever O is then depressed, as indicated by the arrow, until the shoulder m (shown in dotted line) comes in contact with the side of the link g.
- the section B is forced upward a distance equal to the distance of the center of the pivot r from that of the pivot 19; and, further, the shoulder m being so distanced as to come in contact with the link 9 only when the pivot 4 (whose travel is indicated in dotted line) has justpassed the lower center, the section B is securely locked in position by its superincum bent weight.
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Emergency Lowering Means (AREA)
- Vehicle Cleaning, Maintenance, Repair, Refitting, And Outriggers (AREA)
- Invalid Beds And Related Equipment (AREA)
Description
Unmans'ra'rns PATENT Qrrron.
HERMAN BROGKSMITH, OF ST. LOUIS, MISSOURI, ASSIGNOR OF ONE HALF HIS RIGHT TO ERNEST QUAST, OF JERSEYVILLE, ILLINOIS.
IMPROVEMENT IN LlFTlNG-JACK S.
Specification forming part of Letters Patent No. 161,925, dated April 13, 1975; application filed December 4, 1874.
To all whom it may concern Be it known that I, HERMAN BRooKsMIrH, of St. Louis, in the county of St. Louis and State of Missouri, have invented a new and Improved Lifting-Jack; and I do hereby declare that the following is a full and exact description of the same, reference being had to the accompanying drawings, and to the letters of reference marked thereon.
The withindescribed invention is an improved lifting-jack, designed, mainly, for raising heavy vehicles, such as wagons, omnibuses, 860.; and consists in certaindetails of construction, whereby the implement is rendered unusually po werful, compact, and inexpensive.
1n the drawings, Figure is a side elevation of the jack, and Fig. 2 is an edge view of the same.
A and B, Fig. 1, represent two sections of the standard, the upper section being adapted to move vertically upon the lower one. the parallelism of the two parts being maintained by the two overlapping tongues a and b, which slide vertically in guide-loops formed by the iron bands 6 e e e. The steps on the top of section B are for the purpose of adapting the jack to lift vehicles of difi'erent heights. 0 represents a lever pivoted to the movable section B at the point p, and to this lever is pivoted, at the point r, the upper extremity of the link 9, whose lower end is similarly secured to the standard A.
In using the device it is placed under the vehicle, in such a position that the axle will rest on one of the steps of the movable section B. The lever O is then depressed, as indicated by the arrow, until the shoulder m (shown in dotted line) comes in contact with the side of the link g. By this operation the section B is forced upward a distance equal to the distance of the center of the pivot r from that of the pivot 19; and, further, the shoulder m being so distanced as to come in contact with the link 9 only when the pivot 4 (whose travel is indicated in dotted line) has justpassed the lower center, the section B is securely locked in position by its superincum bent weight.
I claim as my invention The lifting-jack described, having the parts A B, with overlapping tongues a I), securinglinks e e, lever U, and link g, the lever being provided with a limiting-shoulder, m, by means J of which the position of the link is determined when the jack is fully raised, as described.
This specification signed and witnessed this 24th day of November, 1874.
HERMAN BROOKSMITH.
Witnesses:
G. W. KURTZEBORN, PETER MEELE.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US161925A true US161925A (en) | 1875-04-13 |
Family
ID=2231334
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US161925D Expired - Lifetime US161925A (en) | Improvement in lifting-jacks |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US161925A (en) |
-
0
- US US161925D patent/US161925A/en not_active Expired - Lifetime
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