US55102A - Improvement in lifting-jacks - Google Patents
Improvement in lifting-jacks Download PDFInfo
- Publication number
- US55102A US55102A US55102DA US55102A US 55102 A US55102 A US 55102A US 55102D A US55102D A US 55102DA US 55102 A US55102 A US 55102A
- Authority
- US
- United States
- Prior art keywords
- standard
- lever
- improvement
- jacks
- rack
- 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
- 230000036633 rest Effects 0.000 description 4
- 210000000088 Lip Anatomy 0.000 description 2
- 210000000707 Wrist Anatomy 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000005728 strengthening Methods 0.000 description 2
Images
Classifications
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05G—CONTROL DEVICES OR SYSTEMS INSOFAR AS CHARACTERISED BY MECHANICAL FEATURES ONLY
- G05G5/00—Means for preventing, limiting or returning the movements of parts of a control mechanism, e.g. locking controlling member
- G05G5/06—Means for preventing, limiting or returning the movements of parts of a control mechanism, e.g. locking controlling member for holding members in one or a limited number of definite positions only
Definitions
- My improvement relates to lifting-jacks, as hereinafter described, being an. improvement on a patent granted to me October 31, 1865.
- A is the base that supports the standard A' and lever B.
- the head ot' this lever is connected to the base A by means of a shaft, a, passing through the eyes of two staples, a', on the base, these staples being connected to the top of said base, thus forming the fnlcrum or pivot ofthe lever B.
- Passing round the head of the lever is a strap, b, for the purpose of strengthening it.
- c is a plate, one on each side of t-he lever, to which plates the head of the standard A' is pivoted, as shown at c'.
- the head of the lever is cored out to receive the end of the standard, and in which it rests to relieve the pivots c' from undue strain.
- the rack O When wagons are higher or lower the rack O can be raised or lowered to suit the height. The higher the vwagon the higher the rack must be raised.
- the weight or pressure does not come on the pivots c' that hold the standard to the lever, but on the head of the lever, it being cored out to receive the head of the standard, and which rests in said core when the leverl is raised up.
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Portable Nailing Machines And Staplers (AREA)
Description
PATENT OFFICE.
AARON HIGLEY, OF SOUT'H BEND, INDIANA.
IMPROVEMENT IN LlFTING-JACKS.
Specification forming part of Letters Patent No. 55,102, dated May 29, 1866.
fo all whom it may concern.-
Be it known that I, A. IllGLEY, of South Bend, in the county of St. Joseph and State ofIndiana, have invented certain new and use ful Improvements in Lifting-Jacks; and I do hereby declare that the following is a full and complete description of the construction and operation of the same, reference being had to the accompanying drawings, making a part of this specilica-tion, in which- Figure l is a perspective view. Fig. 2 is a side view.
Like letters of reference refer to like parts in the views.
My improvement relates to lifting-jacks, as hereinafter described, being an. improvement on a patent granted to me October 31, 1865.
In the drawings, A is the base that supports the standard A' and lever B. The head ot' this lever is connected to the base A by means of a shaft, a, passing through the eyes of two staples, a', on the base, these staples being connected to the top of said base, thus forming the fnlcrum or pivot ofthe lever B. Passing round the head of the lever is a strap, b, for the purpose of strengthening it.
c is a plate, one on each side of t-he lever, to which plates the head of the standard A' is pivoted, as shown at c'. The head of the lever is cored out to receive the end of the standard, and in which it rests to relieve the pivots c' from undue strain.
In the standard A is a groove in which the rack O moves, which rack is held to the standard by means of bands C', that extend round the standard and rack, as shown, said rack having a ratchet, D, the link D', hung to the top and back of the standard, catching in the ratchet and holding it in` place when it is raised up or let down, the dotted lines in Fig.
2 showing how far it can be raised up, the lip d catching against the lower band, C'.
When it is desired to use this jack the standard is placed under the axle, the lever being in the position shown in Fig. l, and the rack raised up to the axle. The lever is then raised to the position seen in Fig. 2, and the heft of the load will hold it there, not allowing it to be thrown back, and it cannot go any farther forward, as it comes against the standard and the heft of the load is forward ot' the fulcrum.
When wagons are higher or lower the rack O can be raised or lowered to suit the height. The higher the vwagon the higher the rack must be raised.
When the jack is in use the weight or pressure does not come on the pivots c' that hold the standard to the lever, but on the head of the lever, it being cored out to receive the head of the standard, and which rests in said core when the leverl is raised up.
To the lower end of the standard A' are secured straps or plates E. From each side extends a wrist, and by which means, in connection with the plates c, the standard is hinged or pivoted at c' to the head of the lever B.
What I claim as my improvement, and desire to secure by Letters Patent, is-
rIhe link D', pivoted to the standard A', and lever B, hinged to said standard by the straps E and plates c, and to the base A by the shaft a and staples a', in combination with the rack O and bands C', arranged as and for the purpose set forth.
AARON HIGLEY.
Witnesses:
J. B. ARNOLD, Jr., B. WALL.
Publications (1)
Publication Number | Publication Date |
---|---|
US55102A true US55102A (en) | 1866-05-29 |
Family
ID=2124645
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US55102D Expired - Lifetime US55102A (en) | Improvement in lifting-jacks |
Country Status (1)
Country | Link |
---|---|
US (1) | US55102A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20090319047A1 (en) * | 2008-06-24 | 2009-12-24 | Peter Stanley Walker | Recess-ramp knee joint prosthesis |
-
0
- US US55102D patent/US55102A/en not_active Expired - Lifetime
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20090319047A1 (en) * | 2008-06-24 | 2009-12-24 | Peter Stanley Walker | Recess-ramp knee joint prosthesis |
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