US163791A - Improvement in lifting-jacks - Google Patents
Improvement in lifting-jacks Download PDFInfo
- Publication number
- US163791A US163791A US163791DA US163791A US 163791 A US163791 A US 163791A US 163791D A US163791D A US 163791DA US 163791 A US163791 A US 163791A
- Authority
- US
- United States
- Prior art keywords
- lifting
- screws
- jacks
- improvement
- jack
- 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
- 241001490312 Lithops pseudotruncatella Species 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
- B66F3/00—Devices, e.g. jacks, adapted for uninterrupted lifting of loads
- B66F3/08—Devices, e.g. jacks, adapted for uninterrupted lifting of loads screw operated
Definitions
- This lifting-jack is especially intended for replacing railway-cars but may be used for lifting any article that requires to be moved along after lifting.
- My invention consists in the combination, with two screws with right and left hand threads and a tubular nut, of two wheel-segments, forming the bearings at the ends of the screws, so that, after the car or other article has been raised, it may be rolled along upon such wheel-segments a greater distance than heretofore usual in liftingjacks, and without the exercise of much power, and without the article descending appreciably as it is moved.
- Figure 1 is a vertical section of said screw-jack
- Fig. 2 is an end view of the same.
- the screws or and b are made with right and left hand threads and the sleeve 0 is around these screws, and provided with lugs d or openings, by means of which the sleeve can be turned by a lever or wrench, and screw the screws a and b apart, and raise or move the article against which the jack is placed. The reverse movement draws the screws together.
- the end bearings of the screws a b are made as wheel-segments f andg (described from near the center of the jack) when the screws are projected about half-way, so that this jack can be used to raise a car or other article, and to roll it along horizontally to the extent permissible by the wheel-segments.
- This jack may be applied to any lifting purposes to which it is available.
Description
UNITED STATES PATENT OFFICE.
WILLIAM LIVINGSTONE, OF VALLEY STREAM, ASSIGNOR TO HIMSELF AND H. A. ROGERS, OF NEW YORK, N. Y.
IMPROVEMENT IN LlFTlNG-JACKS- Specification forming part of Letters Patent No. 163,791, dated May 25, 1875; application filed April 28, 1875.
To all whom it may concern:
Be it known that I, WILLIAM LIVINGSTONE, of Valley Stream, in the county of Queens and State of New York, have invented an Improvement in Lifting-Jacks, of which the following is a specification v This lifting-jack is especially intended for replacing railway-cars but may be used for lifting any article that requires to be moved along after lifting.
My invention consists in the combination, with two screws with right and left hand threads and a tubular nut, of two wheel-segments, forming the bearings at the ends of the screws, so that, after the car or other article has been raised, it may be rolled along upon such wheel-segments a greater distance than heretofore usual in liftingjacks, and without the exercise of much power, and without the article descending appreciably as it is moved.
In the drawing, Figure 1 is a vertical section of said screw-jack, and Fig. 2 is an end view of the same.
The screws or and b are made with right and left hand threads and the sleeve 0 is around these screws, and provided with lugs d or openings, by means of which the sleeve can be turned by a lever or wrench, and screw the screws a and b apart, and raise or move the article against which the jack is placed. The reverse movement draws the screws together. The end bearings of the screws a b are made as wheel-segments f andg (described from near the center of the jack) when the screws are projected about half-way, so that this jack can be used to raise a car or other article, and to roll it along horizontally to the extent permissible by the wheel-segments.
This jack may be applied to any lifting purposes to which it is available.
I claim as my invention- The combination, with the right and left hand screws and tubular nut, of the wheel-segments, forming bearings at the ends of the screws, for the purposes set forth.
Signed by me this 27th day of April, A. l).
WILLIAM LIVINGSTONE. Witnesses:
GEO. T. PINOKNEY, CHAS. E. SMITH.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US163791A true US163791A (en) | 1875-05-25 |
Family
ID=2233200
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US163791D Expired - Lifetime US163791A (en) | Improvement in lifting-jacks |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US163791A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5870814A (en) * | 1997-09-29 | 1999-02-16 | Ralph D. Chabot | Method for replacing a vehicular wheel cylinder |
| US20100001239A1 (en) * | 2008-07-04 | 2010-01-07 | Lee Dufour | Motorcycle Jack |
| CN105035999A (en) * | 2015-06-25 | 2015-11-11 | 上海外高桥造船有限公司 | Supporting device for thwartship bulkhead segmentation |
-
0
- US US163791D patent/US163791A/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5870814A (en) * | 1997-09-29 | 1999-02-16 | Ralph D. Chabot | Method for replacing a vehicular wheel cylinder |
| US20100001239A1 (en) * | 2008-07-04 | 2010-01-07 | Lee Dufour | Motorcycle Jack |
| CN105035999A (en) * | 2015-06-25 | 2015-11-11 | 上海外高桥造船有限公司 | Supporting device for thwartship bulkhead segmentation |
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