US116232A - Improvement in lifting-jacks - Google Patents
Improvement in lifting-jacks Download PDFInfo
- Publication number
- US116232A US116232A US116232DA US116232A US 116232 A US116232 A US 116232A US 116232D A US116232D A US 116232DA US 116232 A US116232 A US 116232A
- Authority
- US
- United States
- Prior art keywords
- lifting
- rack
- improvement
- jacks
- 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 2
- 230000002452 interceptive 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
- the nature of this invention relates to the construction of an improved lifting-jack for raising cars, carriages, wagons, fences, and other articles, where much lifting power is required, at a small cost for the device.
- the invention consists in thenovel arrangement of the various parts, as more fully hereinafter described.
- A represents a hollow standard, surmounted upon a proper base, B.
- This standard is open on the front side, as shown, and within it is the rack (J, so arranged as to have a free vertical movement,
- the front of the two sides of the standard is provided with ears d, to and between which is pivoted the dog 0, which engages with the teeth of the rack and holds the same in its position.
- the arms D are pivoted to the top of the sides of the standard, as shown, near or at the rear and upper corner. Between the lower ends of these arms is pivoted the lever-pawl E, whose inner end terminates in a segmental rack, 11., which is designed to engage with the teeth of the rack in such a manner that, by
- the rack may be raised as desired. Should the upper tooth of the pawl break after its engagement with the rack, the next one, in the continued movement of the lever, would engage and prevent a fall.
Description
JAMES u. SMiTH.
Improvement in Lifting-Jacks.
No. 116,232. 7 'PatentedJunB ZO.1871.
UNITED STATES PATENT OFFICE.
JAMES U. SMITH, OF ORION, ASSIGNOR TO HIMSELF AND JOSEPH MASETH,
OF WYANDOTTE, MICHIGAN.
Specification forming part of Letters Patent No. 116,232, dated June 20, 1871.
To all whom it may concern:
Be it known that I, JAMES U. SMITH, of Orion, in the county of Oakland and State of Michigan,have invented a new and useful Improvement in Lifting-Jack; and I do declare that the following is a true and accurate description thereof, reference being had to the accompanying drawing and to the letters of reference marked thereon and being a part of this specification, in which- Figure 1 is a perspective 5 Fig. 2, a detached view of the dog; Fig. 3, a detached view of the lever with a segmental rack upon its end.
Like letters refer to like parts in each figure.
The nature of this invention relates to the construction of an improved lifting-jack for raising cars, carriages, wagons, fences, and other articles, where much lifting power is required, at a small cost for the device. The invention consists in thenovel arrangement of the various parts, as more fully hereinafter described.
In the accompanying drawing, A represents a hollow standard, surmounted upon a proper base, B. This standard is open on the front side, as shown, and within it is the rack (J, so arranged as to have a free vertical movement,
and secured in place by a pin passing through with a nut or washer, b, and controls the position of the rack within the standard without interfering with its vertical movement. The front of the two sides of the standard is provided with ears d, to and between which is pivoted the dog 0, which engages with the teeth of the rack and holds the same in its position. The arms D are pivoted to the top of the sides of the standard, as shown, near or at the rear and upper corner. Between the lower ends of these arms is pivoted the lever-pawl E, whose inner end terminates in a segmental rack, 11., which is designed to engage with the teeth of the rack in such a manner that, by
the motion of the lever, the rack may be raised as desired. Should the upper tooth of the pawl break after its engagement with the rack, the next one, in the continued movement of the lever, would engage and prevent a fall.
What I claim as my invention, and desire to secure by Letters Patent, is-
The arrangement of the standard A, rack 0, dog 0, arms D, and lever-pawl E, when each part is constructed as described and shown, and connected to operate substantially as set forth.
JAMES U. SMITH. Witnesses:
F, STICKLES, J Aims PORRITT.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US116232A true US116232A (en) | 1871-06-20 |
Family
ID=2185691
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US116232D Expired - Lifetime US116232A (en) | Improvement in lifting-jacks |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US116232A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040024875A1 (en) * | 2002-07-30 | 2004-02-05 | Microsoft Corporation | Schema-based services for identity-based access to device data |
| US20040039596A1 (en) * | 2002-08-21 | 2004-02-26 | Communitect, Inc. | Method and system for scheduling and transmitting multiple message types |
| EP3896212A1 (en) * | 2020-04-14 | 2021-10-20 | Carl Freudenberg KG | Rotary clothes dryer |
-
0
- US US116232D patent/US116232A/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040024875A1 (en) * | 2002-07-30 | 2004-02-05 | Microsoft Corporation | Schema-based services for identity-based access to device data |
| US20040039596A1 (en) * | 2002-08-21 | 2004-02-26 | Communitect, Inc. | Method and system for scheduling and transmitting multiple message types |
| EP3896212A1 (en) * | 2020-04-14 | 2021-10-20 | Carl Freudenberg KG | Rotary clothes dryer |
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