US186402A - Improvement in lifting-jacks - Google Patents
Improvement in lifting-jacks Download PDFInfo
- Publication number
- US186402A US186402A US186402DA US186402A US 186402 A US186402 A US 186402A US 186402D A US186402D A US 186402DA US 186402 A US186402 A US 186402A
- Authority
- US
- United States
- Prior art keywords
- lifting
- lever
- jacks
- improvement
- ratchet
- 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
- 210000001513 Elbow Anatomy 0.000 description 2
- 238000010276 construction 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
Definitions
- Figure 1 0f the drawings is a representation of a perspective elevation of my device.
- My invention is a lifting-jack; and consists in the novel construction, arrangement, and
- the letter A represents the sill, upon which the said two vertical standards B firmly rest, between which is hung, by an adjusting pivot pin, a, thelever D.
- an elbowed ratchet-bar, O which passes freely and slantingly downward between said standards, and isprovided in its lower surface with ratchet-teeth b, which slide downward over and engage upward with a bolt, 0, passed transversely through the said standards, a little below their middle.
- a transversecheckpin (1, long enough to project horizontally from its sides, and prevent the said end from being pulled through between the standards.
- the letter E represents said angular block resting upon the top of the shorter arm of the lever D, and hinged by its inner end to the lever, as shown.
- Said block E has a suitable notch, m, at its upper and outer end, as shown, to give greater height to the rise of the short arm of the lever D, and consequently to any weight placed upon it.
- a hooked rod, h, or hanger which extends downward from said block, when the short arm of said lever is entirely down, nearly to the bottom of the sill A, for the purpose of conveniently raising anything lying upon the ground. Therefore,
Description
UNITED STATES PATENT OFFICE.
FRANCIS M. LOTTRIDGE, JONESBOROUGH, INDIANA.
IMPROVEMENT m LlFTlNG-JACKS.
Specification forming part of Letters Patent N 0. 186,402, dated January 16, 1877; application filed July 5, 1876.
To all whom it may concern:
Be it known that I, FRANCIS M. LoTT- RIDGE, of Jonesborough, in the county of vGrrant and State of Indiana, have invented I anew and valuable Improvement in Lifting- Jacks; and I do hereby declare that the following is a full, clear, and exact description of the same, reference being had to the annexed drawings, making a part of this specification,
and to the letters and figures of reference marked thereon.
Figure 1 0f the drawings is a representation of a perspective elevation of my device. My invention is a lifting-jack; and consists in the novel construction, arrangement, and
operation of the following peculiar features:
A level, pivoted in the usual manner between twovertical standards, comprising the followin g combination: an elbowed ratchet-bar, suitably attached to the long arm of the lever, and provided with a check-pin near its outer end,
retrorse teeth,and a wire pull-rod, fastened described, and illustrated by the accompanying drawings, in which the same letters designate identical parts of my device in the different figures, respectively.
The letter A represents the sill, upon which the said two vertical standards B firmly rest, between which is hung, by an adjusting pivot pin, a, thelever D. To the said lever is fastened an elbowed ratchet-bar, O, which passes freely and slantingly downward between said standards, and isprovided in its lower surface with ratchet-teeth b, which slide downward over and engage upward with a bolt, 0, passed transversely through the said standards, a little below their middle. Across the end of said ratchet-bar is a transversecheckpin, (1, long enough to project horizontally from its sides, and prevent the said end from being pulled through between the standards. Also, attached at the said elbow of said ratchet-bar is the said pull-rod f, running back along the long arm of the lever D, through a guide-loop g, so as to regulate the backward movement of said ratchet-bar, by setting any particular tooth against theflbolt c, when the Weight has been raised by said lever to any desired height. The letter E represents said angular block resting upon the top of the shorter arm of the lever D, and hinged by its inner end to the lever, as shown. Said block E has a suitable notch, m, at its upper and outer end, as shown, to give greater height to the rise of the short arm of the lever D, and consequently to any weight placed upon it. Near the outer end 'of said block E, or within a suitable notch, n, as shown, is attached a hooked rod, h, or hanger, which extends downward from said block, when the short arm of said lever is entirely down, nearly to the bottom of the sill A, for the purpose of conveniently raising anything lying upon the ground. Therefore,
What I claim as my invention, and desire to secure by Letters Patent, is
In a lifting-jack, the combination of the adjustable lever D, the standards B, and the sill A with the elbowed ratchet-bar 0, provided with the retrorse teeth b, the transverse bolt or pawl c, and the pull-rod f, guided by the loop 9, and also with the hinged block E, provided with the notches m and n and the hanger h, substantially as and for the purposes specified.
In testimony that I claim the above I- have hereunto subscribed my name in the presence of two witnesses? FRANCIS M. LOTTRIDGE.
Witnesses JOHN MOKEEVER, J OHN E. ENSMINGER.
Publications (1)
Publication Number | Publication Date |
---|---|
US186402A true US186402A (en) | 1877-01-16 |
Family
ID=2255810
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US186402D Expired - Lifetime US186402A (en) | Improvement in lifting-jacks |
Country Status (1)
Country | Link |
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US (1) | US186402A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5618030A (en) * | 1996-03-28 | 1997-04-08 | Eggert; Richard L. | Snowmobile jack |
-
0
- US US186402D patent/US186402A/en not_active Expired - Lifetime
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5618030A (en) * | 1996-03-28 | 1997-04-08 | Eggert; Richard L. | Snowmobile jack |
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