US124519A - Improvement in lifting-jacks - Google Patents
Improvement in lifting-jacks Download PDFInfo
- Publication number
- US124519A US124519A US124519DA US124519A US 124519 A US124519 A US 124519A US 124519D A US124519D A US 124519DA US 124519 A US124519 A US 124519A
- Authority
- US
- United States
- Prior art keywords
- lever
- lifting
- jacks
- improvement
- pivot
- 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
- 230000036633 rest Effects 0.000 description 4
- 235000013405 beer Nutrition 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000000284 resting 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T74/00—Machine element or mechanism
- Y10T74/20—Control lever and linkage systems
- Y10T74/20576—Elements
- Y10T74/20582—Levers
- Y10T74/20612—Hand
- Y10T74/20624—Adjustable
Definitions
- the drawing represents a side view, partly in section, of my improved lifting-jack.
- This invention relates to a new wagonjack of very simple and convenient make, and which is applicable to axles of suitable height.
- the invention consists in a new arrangement of standard shifting-lever and locking-link, as hereinafter more fully described.
- A represents the standard of the jack. It is made of proper height, with a base sufficiently large to support it, and forked at the upper end. Bis the lifting-lever. It is notched at the lower end, Where it enters the fork of the standard; and one of the notches rests on the pivot a., which is iixed in A.
- a strap, b is fastened to the lower edge of the lever B, opposite the notched portion thereof, to keep it confined to the pivot.
- the upper part of the lever contains steps c c, on one of which the axle to be lifted rests.
- the handle part d of the lever B has a row of notches on the upper side.
- C is a link, hinged to the lower part of the standard, and made to embrace the lever.
- a Weight resting on the step c will draw the handle part of the lever against the link C, and thus hold itself properly supported. The, further the lever is moved ahead on the pivot a the higher will it place its steps. The lever can thus be shifted for the front or hind axle Without requiring the displacement of the pivot a with the notched lever B and link C, all arranged substantially as herein shown and described.
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Manufacturing Of Electrical Connectors (AREA)
Description
UNITED STATES BEERS B. TOMLINSON, OF MT. CARROLL, ILLINOIS.
IMPROVEMENT IN LIFTING-JACKS.
Specification forming part of Letters Patent No. 124,519, dated March 12, 1872.
Specification describing a new and Improved Lifting-J ack, invented by BEERs B. ToMLIN- SON, of Mt. Carroll, in the county of Carroll and State of Illinois.
The drawing represents a side view, partly in section, of my improved lifting-jack.
This invention relates to a new wagonjack of very simple and convenient make, and which is applicable to axles of suitable height. The invention consists in a new arrangement of standard shifting-lever and locking-link, as hereinafter more fully described.
A represents the standard of the jack. It is made of proper height, with a base sufficiently large to support it, and forked at the upper end. Bis the lifting-lever. It is notched at the lower end, Where it enters the fork of the standard; and one of the notches rests on the pivot a., which is iixed in A. A strap, b, is fastened to the lower edge of the lever B, opposite the notched portion thereof, to keep it confined to the pivot. The upper part of the lever contains steps c c, on one of which the axle to be lifted rests. The handle part d of the lever B has a row of notches on the upper side. C is a link, hinged to the lower part of the standard, and made to embrace the lever. A Weight resting on the step c will draw the handle part of the lever against the link C, and thus hold itself properly supported. The, further the lever is moved ahead on the pivot a the higher will it place its steps. The lever can thus be shifted for the front or hind axle Without requiring the displacement of the pivot a with the notched lever B and link C, all arranged substantially as herein shown and described.
BEERS B. TOMLINSON.
Witnesses:
A. L. PRATT, J. J. ItIsING.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US124519A true US124519A (en) | 1872-03-12 |
Family
ID=2193950
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US124519D Expired - Lifetime US124519A (en) | Improvement in lifting-jacks |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US124519A (en) |
-
0
- US US124519D patent/US124519A/en not_active Expired - Lifetime
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