US121774A - Improvement in lifting-jacks - Google Patents
Improvement in lifting-jacks Download PDFInfo
- Publication number
- US121774A US121774A US121774DA US121774A US 121774 A US121774 A US 121774A US 121774D A US121774D A US 121774DA US 121774 A US121774 A US 121774A
- Authority
- US
- United States
- Prior art keywords
- lifting
- jacks
- improvement
- lever
- chamber
- 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
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 210000003414 Extremities Anatomy 0.000 description 2
- 229910052742 iron Inorganic materials 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
- This invention relates to that class of lifting jacks for vehicles, in which the power is applied to a lever working through toggle-bars to an adjustable bracket under the axle-tree; and the object of this invention is to give great power in the operation of lifting, and when brought to a certain point becomes self-sustaining; also, in combination therewith, an adjustable bracket on the liftingrod, whereby the apparatus can be easily adapted to the various heights of the axletree or loads to be raised.
- Figure 1 is a side elevation of said jack with the cap or cover on the lever-chamber removed to sh ow the arrangements of the parts before the operation of lifting is performed.
- Fig. 2 is a similar view, but showing the position of the several parts sustaining the load, or when the act of lift ing has been performed.
- a A represents the hollow iron column for supporting the working parts.
- At B is a plane-sided chamber of sufficient size to receive the togglebars C and D, which are connected to the actuatinglever E, as shown in the drawing.
- F is the lifting-rod or plunger working vertically from the chamber B up through the interior of the column A, and extends to a sufficient distance above the column to receive a strong bracketsupporting sleeve Cr, and also to permit of said sleeve being moved up and down upon it for several inches, according to the variable heights of vehicle axles.
- the actuating lever E as shown in Fig.
- Said stud 1 serves as a fulcrum to the lever E to force the toggle-bars C and D in a right line, or even a little beyond it, as shown in Fig.
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Vehicle Cleaning, Maintenance, Repair, Refitting, And Outriggers (AREA)
Description
A. E; GODDARD..
Patented Dec. 12,1871.
W Q o 4 Improvement In Llftlng Jack UNITED STATES PATENT ()FFICE.
ALFRED E. GODDARD, OF ESSEX, CONNECTICUT.
IMPROVEMENT IN LlFTlNG-JACKS.
Specification forming part of Letters Patent No. 121,774, dated December 12, 1871.
To all whom it may concern.-
Be it known that I, ALFRED E. GODDARD, of Essex, in the county of Middlesex and State of Connecticut, have invented certain Improvements in Lifting-Jacks, of which the following is a specification: A
This invention relates to that class of lifting jacks for vehicles, in which the power is applied to a lever working through toggle-bars to an adjustable bracket under the axle-tree; and the object of this invention is to give great power in the operation of lifting, and when brought to a certain point becomes self-sustaining; also, in combination therewith, an adjustable bracket on the liftingrod, whereby the apparatus can be easily adapted to the various heights of the axletree or loads to be raised.
Figure 1 is a side elevation of said jack with the cap or cover on the lever-chamber removed to sh ow the arrangements of the parts before the operation of lifting is performed. Fig. 2 is a similar view, but showing the position of the several parts sustaining the load, or when the act of lift ing has been performed.
A A represents the hollow iron column for supporting the working parts. At B is a plane-sided chamber of sufficient size to receive the togglebars C and D, which are connected to the actuatinglever E, as shown in the drawing. F is the lifting-rod or plunger working vertically from the chamber B up through the interior of the column A, and extends to a sufficient distance above the column to receive a strong bracketsupporting sleeve Cr, and also to permit of said sleeve being moved up and down upon it for several inches, according to the variable heights of vehicle axles. The actuating lever E, as shown in Fig. 1, is bent to nearly or quite a right angle where it enters the chamber B, and when at rest the handle portion will be about in avertical position or along the side of the column A, and the part in the chamber B will then be in a horizontal position, as shown in Fig. 1. At a point about in the center of chamber B is a stud, 1, firmly fastened in and through the inner end of lever E, and the ends of said stud extend through slots in the sides of chamber B, said slots being sufficiently long to permit the entire throw of the levers or lifting motion of the jack. Said stud 1 serves as a fulcrum to the lever E to force the toggle-bars C and D in a right line, or even a little beyond it, as shown in Fig. 2, so that they will sustain the load without any outside pressure upon the handle E. The toggle-bar Cis pivoted at its lower end to an eye-stud in the bottom of the chamber B, and the other end is pivoted to the lever E at any desiredpoint toward the handle necessary for giving sufficient motion to the plunger F. The other toggle-bar, D, is pivoted at its lower end to the inner extremity of the lever E, and its upper end is attached to the lower end of the plunger. The bracket at Gis held in any position upon the plunger F by apawl, 2, which holds the bracket up to the axle, or nearly so, before the lifting from the lever E begins, and thereby takes up what would otherwise be lost motion.
I claim- In a lifting-jack for vehicles, the combination of the lifting mechanism, either with or without an adjustable bracket, as described and for the purposes set forth.
ALFRED E. GODDARD. Witnesses:
JARED E. REDFmLD,
O. S. HOUGH. (79)
Publications (1)
Publication Number | Publication Date |
---|---|
US121774A true US121774A (en) | 1871-12-12 |
Family
ID=2191215
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US121774D Expired - Lifetime US121774A (en) | Improvement in lifting-jacks |
Country Status (1)
Country | Link |
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US (1) | US121774A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20170105420A1 (en) * | 2014-04-29 | 2017-04-20 | Haas Food Equipment Gmbh | Baking oven |
-
0
- US US121774D patent/US121774A/en not_active Expired - Lifetime
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20170105420A1 (en) * | 2014-04-29 | 2017-04-20 | Haas Food Equipment Gmbh | Baking oven |
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