US110818A - Improvement in lifting-jacks - Google Patents
Improvement in lifting-jacks Download PDFInfo
- Publication number
- US110818A US110818A US110818DA US110818A US 110818 A US110818 A US 110818A US 110818D A US110818D A US 110818DA US 110818 A US110818 A US 110818A
- Authority
- US
- United States
- Prior art keywords
- jacks
- improvement
- post
- lifting
- lever
- 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
- 230000000994 depressogenic effect Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000000284 resting effect Effects 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
- B66F1/00—Devices, e.g. jacks, for lifting loads in predetermined steps
- B66F1/02—Devices, e.g. jacks, for lifting loads in predetermined steps with locking elements, e.g. washers, co-operating with posts
- B66F1/04—Devices, e.g. jacks, for lifting loads in predetermined steps with locking elements, e.g. washers, co-operating with posts the posts being toothed
- B66F1/06—Devices, e.g. jacks, for lifting loads in predetermined steps with locking elements, e.g. washers, co-operating with posts the posts being toothed and the devices being actuated mechanically
Definitions
- My invention relates to portable lifting-jacks, and" consists in a simple and eiiicient combination of parts, which render it very portable and yet adapted lto the elevation of considerable weight-s.
- Figure 1 is a front
- Figure 2 a vertical section through the middle thereof.
- A is a post slotted through the middle fronrthe ltop downwardly.
- C is a sin'ooth bearing piece on.one.side of the top.
- E is a fixed detent-pawl, having aruis loosely pivoted on the post and near the top.
- G is a lever, fulerumed on the post by means of forked ends, and provided-with a loose pawl, F, on its end.
- L is a link; and Y M, another lever pivoted to the post.
- I is an independent unattached bar, having inclined teeth thereon, and a hook, K, or some lother means, to receive the weight at the end.
- the bar I placed obliquely through the -slot of the post, resting at one point on the fnndin-pin of lever G, and at another point above and against the 'smooth-suriced piece C. It is prevented from dropping through from its own gravity bythe detentpawl
- the power-end of lever G is elevated, which carries its swinging pawl F down, and when the said power-end is depressed the pawl catches on the inclined teeth of the bar and eleva-tes it. rhe deteni, ⁇ pawl holds the bar at the point to which it has been 'raised until a new lift has been made.
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Treatment Of Fiber Materials (AREA)
- Details Of Garments (AREA)
- Discharge By Other Means (AREA)
Description
Allniit iitni We eine,
onnnN A. ANTHONYQOF 'Martin-LD, NEW YORK.'
Letters Patent No. 110,818,.dated January 10,1871.'
IMPROVEMENT-1N merma-Mone The Schedule xeferred to in these Letters Patentand making pai-t o the same.
My invention relates to portable lifting-jacks, and" consists in a simple and eiiicient combination of parts, which render it very portable and yet adapted lto the elevation of considerable weight-s.
Figure 1 is a front; and
Figure 2, a vertical section through the middle thereof.
A is a post slotted through the middle fronrthe ltop downwardly.
C is a sin'ooth bearing piece on.one.side of the top.
E is a fixed detent-pawl, having aruis loosely pivoted on the post and near the top.
G is a lever, fulerumed on the post by means of forked ends, and provided-with a loose pawl, F, on its end.
L is a link; and Y M, another lever pivoted to the post.
I is an independent unattached bar, having inclined teeth thereon, and a hook, K, or some lother means, to receive the weight at the end.
The bar I placed obliquely through the -slot of the post, resting at one point on the fnlernin-pin of lever G, and at another point above and against the 'smooth-suriced piece C. It is prevented from dropping through from its own gravity bythe detentpawl When ready, the power-end of lever G is elevated, which carries its swinging pawl F down, and when the said power-end is depressed the pawl catches on the inclined teeth of the bar and eleva-tes it. rhe deteni,` pawl holds the bar at the point to which it has been 'raised until a new lift has been made.
Ihe weight is thns'm'ade to attain th'e desired position. In ease of using a high post the'. lever M may be also employed. v
Having thus described all that is necessary to a full understanding of my invention,
What I esteem to be new, and desire to protect by Letters Patent, is
The slotted post A having loose pawl E and topvpiece C thereon, and the pivoted pawled lever G H E, combiued'as described,witb the unattache'd notchedy -bar I, as and for the purpose specified.
ORREN A ANTHONY.
Vitnesses:
E. A. EnPHnn, H. TITCOMB.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US110818A true US110818A (en) | 1871-01-10 |
Family
ID=2180288
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US110818D Expired - Lifetime US110818A (en) | Improvement in lifting-jacks |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US110818A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050123974A1 (en) * | 2003-11-17 | 2005-06-09 | U.S. Genomics, Inc. | Methods and compositions relating to single reactive center reagents |
-
0
- US US110818D patent/US110818A/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050123974A1 (en) * | 2003-11-17 | 2005-06-09 | U.S. Genomics, Inc. | Methods and compositions relating to single reactive center reagents |
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