US402161A - Lifting-jack - Google Patents
Lifting-jack Download PDFInfo
- Publication number
- US402161A US402161A US402161DA US402161A US 402161 A US402161 A US 402161A US 402161D A US402161D A US 402161DA US 402161 A US402161 A US 402161A
- Authority
- US
- United States
- Prior art keywords
- lifting
- lever
- arm
- jack
- standard
- 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
- 238000010276 construction Methods 0.000 description 4
- 210000003414 Extremities Anatomy 0.000 description 2
- 210000002832 Shoulder Anatomy 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
- VILLIAM H. HOLMES OF CHARLOTTE, VERMONT.
- My invention relates to lifting-jacks, having for its object to simplify, cheapen, and improve the construction, whereby for a small cost a strong, durable, and effective jack may be made, which may be .easily operated and will not be easily put out of order; and it consists in a certain novel construction and ar- I'angement of devices, fully set forth hereinafter in connection with the accompanying drawings, wherein Figure 1 is a perspective view of the improved jack. Fig. 2 is a side View thereof, partly in section.
- A designates the standard of the lifting-jack, having a suitable foot or base, B, and O designates the liftinglever, which is mounted on a transverse pivot, D, arranged in a vertical slot, E, at the upper end of the standard.
- the shorter arm of the lifting-lever is provided with a series of shoulders, F F, arranged at different elevations, those nearest the extremity being lower than those near the pivot, either of which being adapted'to beengaged with the axle of a vehicle.
- a swinging curved ratchet-arm, G is pivoted at its upper end to the ears H H, which depend from the long arm of the lifting-lever near its outer end, and this rat triberm operates in a vertical guide-slot, I, in the standard A, and is prevented from being drawn out of the same by a cross or T head,
- the weight of the arm holds its lower side in contact with the transverse pin L, which is arranged in the guide-slot I, and the ratchet-teeth on the lower pin.
- the teeth are inclined toward the upper end of thearni, so that the long arm of the lifting-lever may be pressed down, but cannot be raised without previously disengaging the ratchet-arm from the pin.
- M represents a small operating-lever, which is arranged under the long arm of the liftinglever, and is provided with vertical ears m, which are pivoted to opposite sides of the lifting-lever.
- the shorter arm of this operatinglever is provided with a notch, m, which engages a horizontal finger, N, on the upper end of the ratchet-arm, whereby, when the outer or longer arm of the operating-lever is raised by the hand which grasps the lifting-lever,
- the curved ratchet-arm is raised and disengaged from the pin in the guide-slot.
- a vertical handle, 0, is attached to the upper end of the standard and passes over the lifting-lever, its object being to enable the jack to be carried and adjusted under the axle to be raised.
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Financial Or Insurance-Related Operations Such As Payment And Settlement (AREA)
Description
(No Model.)
W. H. HOLMES.
LIFTING JACK.
No. 402,161. Patented Apr. 30, 1889.
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' K,onthe free end of the arm.
UNITED 'STATES PATENT OFFICE.
VILLIAM H. HOLMES, OF CHARLOTTE, VERMONT.
LlFTlNG-JAC K.
SPECIFICATION forming part of Letters Patent No.402,161, dated April 30, 1889. I Application .filed August 28, 1888. Serial No. 283,956. (No model.)
To al l whom it may concern.-
Be it known that 1, WILLIAM H. HOLMES,
a citizen of the United States, residing at Charlotte, in the" county of Chittenden and State of Vermont, have invented new and useful Improvements in Lifting Jacks, of which the following is a specification.
My invention relates to lifting-jacks, having for its object to simplify, cheapen, and improve the construction, whereby for a small cost a strong, durable, and effective jack may be made, which may be .easily operated and will not be easily put out of order; and it consists in a certain novel construction and ar- I'angement of devices, fully set forth hereinafter in connection with the accompanying drawings, wherein Figure 1 is a perspective view of the improved jack. Fig. 2 is a side View thereof, partly in section.
Referring to the drawings, A designates the standard of the lifting-jack, having a suitable foot or base, B, and O designates the liftinglever, which is mounted on a transverse pivot, D, arranged in a vertical slot, E, at the upper end of the standard. The shorter arm of the lifting-lever is provided with a series of shoulders, F F, arranged at different elevations, those nearest the extremity being lower than those near the pivot, either of which being adapted'to beengaged with the axle of a vehicle. A swinging curved ratchet-arm, G, is pivoted at its upper end to the ears H H, which depend from the long arm of the lifting-lever near its outer end, and this ratchetarm operates in a vertical guide-slot, I, in the standard A, and is prevented from being drawn out of the same by a cross or T head, The weight of the arm holds its lower side in contact with the transverse pin L, which is arranged in the guide-slot I, and the ratchet-teeth on the lower pin. The teeth are inclined toward the upper end of thearni, so that the long arm of the lifting-lever may be pressed down, but cannot be raised without previously disengaging the ratchet-arm from the pin.
M represents a small operating-lever, which is arranged under the long arm of the liftinglever, and is provided with vertical ears m, which are pivoted to opposite sides of the lifting-lever. The shorter arm of this operatinglever is provided with a notch, m, which engages a horizontal finger, N, on the upper end of the ratchet-arm, whereby, when the outer or longer arm of the operating-lever is raised by the hand which grasps the lifting-lever,
the curved ratchet-arm is raised and disengaged from the pin in the guide-slot.
A vertical handle, 0, is attached to the upper end of the standard and passes over the lifting-lever, its object being to enable the jack to be carried and adjusted under the axle to be raised.
Having thus described my invention, I claim The combination of the standard, the lifting-lever pivoted thereto, the ears H H, depending from'the lifting-lever, the ratcheta-rm pivoted to said ears and engaging a transverse pin secured to the standard, and the operating-lever pivoted to the under side of the lifting-lever and having one end provided with a notch, m, engaging the end of the ratchet-arm, as specified.
In testimony that I claim the foregoing as my own I have hereto affixed my signature in presence of two witnesses.
WILLIAM H. HOLMES.
itnesses:
E. E. DAVIS, ETHELDEN SELDEN.
side of the bar. successively engage the said
Publications (1)
Publication Number | Publication Date |
---|---|
US402161A true US402161A (en) | 1889-04-30 |
Family
ID=2471116
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US402161D Expired - Lifetime US402161A (en) | Lifting-jack |
Country Status (1)
Country | Link |
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US (1) | US402161A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9257820B2 (en) | 2012-02-07 | 2016-02-09 | Jimmie A. Chestnut, Jr. | Wire and tube pulling tool |
-
0
- US US402161D patent/US402161A/en not_active Expired - Lifetime
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9257820B2 (en) | 2012-02-07 | 2016-02-09 | Jimmie A. Chestnut, Jr. | Wire and tube pulling tool |
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