US246222A - Lifting-jack - Google Patents
Lifting-jack Download PDFInfo
- Publication number
- US246222A US246222A US246222DA US246222A US 246222 A US246222 A US 246222A US 246222D A US246222D A US 246222DA US 246222 A US246222 A US 246222A
- Authority
- US
- United States
- Prior art keywords
- lifting
- bar
- lever
- jack
- links
- 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
- 210000002832 Shoulder Anatomy 0.000 description 6
- 210000004681 Ovum Anatomy 0.000 description 2
- 230000003028 elevating Effects 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
- lifting-jacks and it consists in the combination ot' the base, a standard, an operating-lever, and a lifting-bar, together with the connecting-straps by which the various parts are united together, as will be more fully described hereinafter.
- the objectof my invention is to provide a jack by means of which heavy wagons and vehicles of all kinds can he lifted with the greatest ease.
- A represents a suitable base, to which the standard B is rigidly secured in any suitable manner.
- the lifting-bar D which has its upper end provided with any suitable number of shoulders for the purpose of catching under axles of different heights.
- the links or straps G which have their rear ends pivoted to the (Model) operating-lever H at a suitable distance from its inner end.
- This lever has its upper corner slightly rounded away, so that it can be freely turned up or down without having to draw the lower end of the elevating or lilting bar inward toward the standard.
- This standardB has a recess or shoulder, I, formed in its rear side, as shown, and in which theinner end of the lever catches while a weight of any kind is being applied to the top of the lifting-bar. While the end of the lever is made to catch in this shoulder or recess the straps which connect the lever with the lower end of the lifting-bar are in a straight line with the lever, so that all downward pressure upon the top of the lifting-bar simply exerts an endwise pull upon the lever, as shown.
Description
(Model.)
0. H. SEARS.
LIP-TING JACK. No. 246,222. Patented Aug. 23,1881.
Wzz'aszses. jflvzzzzz Ova/60mm ya/3% I UNrrE STATES PATENT Fries.
OHAPIN H. SEARS, OF RUSH CENTRE, KANSAS.
LlFTlNG-JACK.
SPECIFICATION forming part of Letters Patent No. 246,222, dated August 23, 1881.
Application filed June 3, 188].
lifting-jacks; and it consists in the combination ot' the base, a standard, an operating-lever, and a lifting-bar, together with the connecting-straps by which the various parts are united together, as will be more fully described hereinafter.
The objectof my invention is to provide a jack by means of which heavy wagons and vehicles of all kinds can he lifted with the greatest ease.
The accompanyingdrawing represents aperspective of my invention.
A represents a suitable base, to which the standard B is rigidly secured in any suitable manner. Iivoted to the top of this standard by means of the links 0 is the lifting-bar D, which has its upper end provided with any suitable number of shoulders for the purpose of catching under axles of different heights. lhe lower end of this elevating-bar is loosely connected to the front en (1 of the base by means of the two straps or links F, as shown. Also connected to the lower end of this lifting-bar, by the "same pivotal bolt which passes through the straps or links I, are the links or straps G, which have their rear ends pivoted to the (Model) operating-lever H at a suitable distance from its inner end. This lever has its upper corner slightly rounded away, so that it can be freely turned up or down without having to draw the lower end of the elevating or lilting bar inward toward the standard. This standardB has a recess or shoulder, I, formed in its rear side, as shown, and in which theinner end of the lever catches while a weight of any kind is being applied to the top of the lifting-bar. While the end of the lever is made to catch in this shoulder or recess the straps which connect the lever with the lower end of the lifting-bar are in a straight line with the lever, so that all downward pressure upon the top of the lifting-bar simply exerts an endwise pull upon the lever, as shown.
When it is desired to allow the lifting-bar to descend it is only necessary to turn the lever slightly upward, so that its round end can slip downward, when the lifting-barwill descend at once by the weight upon its top.
Having thus described my invention, I claim lll a lifting-jack, the combination of the base A, standard B, the links 0, which unite the upper end of the standard with the upper end of the lifting-bar D, the links 1, for uniting the lower end of the lifting-bar to the base, and the links G, for connecting the lifting-bar D with the lever H, all combined and arranged to operate substantially as shown.
In testimony whereof I affix my signature in presence of two witnesses.
- OHAPIN H. SEARS. Witnesses:
J. W. RHonEs, B. F. DEUEL.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US246222A true US246222A (en) | 1881-08-23 |
Family
ID=2315550
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US246222D Expired - Lifetime US246222A (en) | Lifting-jack |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US246222A (en) |
-
0
- US US246222D patent/US246222A/en not_active Expired - Lifetime
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