US134625A - Improvement in lifting-jacks - Google Patents
Improvement in lifting-jacks Download PDFInfo
- Publication number
- US134625A US134625A US134625DA US134625A US 134625 A US134625 A US 134625A US 134625D A US134625D A US 134625DA US 134625 A US134625 A US 134625A
- Authority
- US
- United States
- Prior art keywords
- lifting
- jacks
- improvement
- standard
- sleeve
- 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
- 229940035295 Ting Drugs 0.000 description 2
- 229910000754 Wrought iron Inorganic materials 0.000 description 2
- 230000000994 depressed Effects 0.000 description 2
- CWYNVVGOOAEACU-UHFFFAOYSA-N fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 2
- 230000005484 gravity 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
- 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 consists in the peculiar combination of parts, as hereafter described.
- Figure 1 is a side elevation of a lifting-jack which embodies my invention
- Fig. 2 is a centra-lvertical section of the same.
- A designates an upright or standard, mounted upon any suitable base B, and provided with a handle, C, at its upper end.
- the upper sleeve D is provided with an arm, E, on which to support the axle d of the carriage when the jack is applied for use.
- the two sleeves D D are connected together by a lifting-lever, F, and short lever G, so pivoted together as to form a toggle-joint.
- the sleeve 1) is provided with a pawl, c, which engages with teeth formed in the lower end of the rack' b.
- the outer end of the pawl c is made heavy, so as to cause it to engage with the rack by its own gravity; but, if desired, it may be operated with a spring.
- the operation is as follows: The jack is placed under the axle, the lifting-lever elevated, and then with the two sleeves it is raised until the arm E strikes the axle d, as shown in Fig. 1, when the pawl 0 will hold the lower sleeve D in its place. , The lifting-lever is then depressed, which will raise the upper sleeve D, straighten the toggle-joint, and -shol d the axle in its elevated position, as shownin Fig. 2.
Description
W. F. ARNOLD.
Lifting-Jacks.
Patented Jan.7,1873.
UNITED STATES PATENT OFFICE.
\VILBUR F. ARNOLD, OF NEW BRITAIN, CONNECTICUT.
IMPROVEMENT IN LlFTlNG-JACKS.
Sp: cification forming part of Letters Patent No. 134,625, dated January 7, 1873.
To all whom it may concern:
Be it known that I, WILBUR F. ARNOLD, of New Britain, in the county of Hartford and State of Connecticut, have invented certain Improvements in Lit'ting Jacks, of which the following is a specification:
My invention consists in the peculiar combination of parts, as hereafter described.
In the accompanying drawing, Figure 1 is a side elevation of a lifting-jack which embodies my invention; and Fig. 2 is a centra-lvertical section of the same.
A designates an upright or standard, mounted upon any suitable base B, and provided with a handle, C, at its upper end. I prefer to make the standard A of wrought-iron tubing. 1 fit two sliding sleeves, D D, upon this round standard A, and prevent them from turning thereon by means of the rack 11. The upper sleeve D is provided with an arm, E, on which to support the axle d of the carriage when the jack is applied for use. The two sleeves D D are connected together by a lifting-lever, F, and short lever G, so pivoted together as to form a toggle-joint. The sleeve 1) is provided with a pawl, c, which engages with teeth formed in the lower end of the rack' b. The outer end of the pawl c is made heavy, so as to cause it to engage with the rack by its own gravity; but, if desired, it may be operated with a spring.
The operation is as follows: The jack is placed under the axle, the lifting-lever elevated, and then with the two sleeves it is raised until the arm E strikes the axle d, as shown in Fig. 1, when the pawl 0 will hold the lower sleeve D in its place. ,The lifting-lever is then depressed, which will raise the upper sleeve D, straighten the toggle-joint, and -shol d the axle in its elevated position, as shownin Fig. 2.
It is, of course, evident that in case the lower sleeve D were rigidly affixed to the stand ard A the operation of all the other parts would be the same as now shown and described, except their adjustability.
By my invention I produce a lifting-jack which is very compact,is veryreadily adjusted to axles of difl'erent heights, and can, be produced at a small cost.
I claim as my invention 1. The combination of the standard A and sleeve. D, with the toggle-joint formed by the levers F G, all substantially as and for the purpose described.
2. The combination of the two movable and adjustable sleeves D D, rack b, pawl c, levers F G, and standard A, all operating together substantially as and for the purpose described.
WILBUR F. ARNOLD.
Witnesses:
EDWARD A. PALMER, JAMES SHEPARD.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US134625A true US134625A (en) | 1873-01-07 |
Family
ID=2204041
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US134625D Expired - Lifetime US134625A (en) | Improvement in lifting-jacks |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US134625A (en) |
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0
- US US134625D patent/US134625A/en not_active Expired - Lifetime
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