US304386A - Wagon-jack - Google Patents
Wagon-jack Download PDFInfo
- Publication number
- US304386A US304386A US304386DA US304386A US 304386 A US304386 A US 304386A US 304386D A US304386D A US 304386DA US 304386 A US304386 A US 304386A
- Authority
- US
- United States
- Prior art keywords
- lever
- jack
- lifting
- wagon
- bolt
- 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
- 230000001154 acute Effects 0.000 description 8
- 101700001674 LEVI Proteins 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
- the object of this improvement is to provide a simple, cheap, and efficient wagon-j ack.
- Figurel is a view of jack in position ready to lift the load.
- Fig. 2 is a view of same after the load has been liited.
- A is the base, B the. standard, and O is the brace, of my jack.-
- the lever D works upon the bolt E, passing through-the standard B.
- link J is a link working between lever D and lifting-arm F, and connects the two together.
- the bolt K which loosely attaches the lower end of link J to lever D, is placed a certain distance from the end a of lever D. This distance may be more or less, but should be sufficient to accomplish the outward movement of lower end of lifting-arm F, as hereinafter mentioned, It will be observed that link J and lever D form an acute angle with each other when first ready to lift, (see Fig. 1,) and as the hand end of lever D is pressed down, in such proportion does this acute angle change to an obtuse angle. It also will be observed that the most difficult point in working wag- (No 'model.)
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Finger-Pressure Massage (AREA)
- Hand Tools For Fitting Together And Separating, Or Other Hand Tools (AREA)
- Press Drives And Press Lines (AREA)
Description
L. P. WEEKS.
WAGON JACK.
(No Model.)
Patented Sept. 884.
Mafia/eases.
u, Pawns mwumn m nn, Walhingtun NITED STATES PATENT OFFICE.
LEVI F. WEEKS, OF'HYDE PARK, ILLINOIS.
WAGON-JACK.
SPECIFICATION forming part of Letters Patent No. 304,386, dated September 2, 1884-.
Application filed June 23, 1884.
f0 all whom it may concern.-
Be it known that I, LEVI F. WEEKS, a citizen of the United States, residing in Hyde Park, in the county of Cook and State of Illinois, have invented a new and useful Improvement in W'agon-Jacks, of which the following is the specification.
The object of this improvement is to provide a simple, cheap, and efficient wagon-j ack.
Figurel is a view of jack in position ready to lift the load. Fig. 2 is a view of same after the load has been liited.
A is the base, B the. standard, and O is the brace, of my jack.- The lever D works upon the bolt E, passing through-the standard B.
F is the lifting-arrn, in the upper end of which is a slot, H, and through this slot passes the bolt I, which attaches loosely the liftingarm to the standard 13.
J is a link working between lever D and lifting-arm F, and connects the two together. The bolt K, which loosely attaches the lower end of link J to lever D, is placed a certain distance from the end a of lever D. This distance may be more or less, but should be sufficient to accomplish the outward movement of lower end of lifting-arm F, as hereinafter mentioned, It will be observed that link J and lever D form an acute angle with each other when first ready to lift, (see Fig. 1,) and as the hand end of lever D is pressed down, in such proportion does this acute angle change to an obtuse angle. It also will be observed that the most difficult point in working wag- (No 'model.)
on-jacks using the lever D. and link J is in changing this acute angle above referred to to an obtuse angle, which is done as the lever D is pressed down. By placing the bolt K at a distance from end a of lever D, and having the slot H in upper end of lifting-arm F, as the lever D is pressed down the lifting-arm F moves upward longitudinally the length of slot H, the lever D at the same time moving on pivotal pointof bolt K, and simultaneously turning on bolt E. This movement of end a of lever D throws the lower end of lifting-arin F outwardly, and thus the acute angle above referred to is lessened, and the most difficult point in working the jack is easily overcome. hen the lever D is lowered, as shown in Fig. 2, the bolt K is placed on the other side of line drawn through bolts L and l E, which looks the levers in that position and holds the liftingarm F at highest point.
I claim I In combination with the lifting-arm F, provided at its upper end with the slot H, link J, and lever D, having suitable support, and
provided with end a, extending beyond link.
J sufficiently far so that as lever D is pressed down the end a will force lower end of liftingarm F outward and move said lifting-arm lo11- gitudinally the length of slot H, as and for the purpose shown. I
' LEVI F. WEEKS. Witnesses:
J. A. OoWLEs,
J. I. MOELROY.
Publications (1)
Publication Number | Publication Date |
---|---|
US304386A true US304386A (en) | 1884-09-02 |
Family
ID=2373557
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US304386D Expired - Lifetime US304386A (en) | Wagon-jack |
Country Status (1)
Country | Link |
---|---|
US (1) | US304386A (en) |
-
0
- US US304386D patent/US304386A/en not_active Expired - Lifetime
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US304386A (en) | Wagon-jack | |
US590602A (en) | Wagon-jack | |
US301881A (en) | Lifting-jack | |
US356443A (en) | Lifting-jack | |
US350597A (en) | meekee | |
US294398A (en) | Lifting-jack | |
US229380A (en) | John charles | |
US296208A (en) | William k | |
US276140A (en) | jones | |
US297255A (en) | halbeet | |
US449308A (en) | Railroad-track lifter | |
US172925A (en) | Improvement in lifting-jacks | |
US480646A (en) | Lifting-jack | |
US253964A (en) | Lifting-jack | |
US415703A (en) | Fenelon b | |
US844784A (en) | Lifting-jack. | |
US345626A (en) | William d wiggins | |
US986408A (en) | Lifting-jack. | |
US278594A (en) | Wagon-jack | |
US349698A (en) | Lifting-jack | |
US648284A (en) | Lifting-jack. | |
US138078A (en) | Improvement in lifting-jacks | |
US305028A (en) | Lifting-jack | |
US384705A (en) | Wagon-jack | |
US191737A (en) | Improvement in lifting-jacks |