US103563A - Improved hoisting-tack - Google Patents
Improved hoisting-tack Download PDFInfo
- Publication number
- US103563A US103563A US103563DA US103563A US 103563 A US103563 A US 103563A US 103563D A US103563D A US 103563DA US 103563 A US103563 A US 103563A
- Authority
- US
- United States
- Prior art keywords
- hoisting
- tack
- jack
- follower
- improved hoisting
- 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
- 238000005192 partition Methods 0.000 description 4
- 241000334154 Isatis tinctoria Species 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000000875 corresponding Effects 0.000 description 2
- 230000036633 rest 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
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T82/00—Turning
- Y10T82/25—Lathe
- Y10T82/2568—Center
Definitions
- This invention relates to a new and useful improvements inla jack for'hoisting weights or heavy bodies,
- Yand consists in the construction and arrangement of parte, as hereinafter more fully described.
- Figurer2f a sectional elevation on the line :v-a: of Y fig. I. l milar letters of reference indicatel corresponding parts.
- A is the stand or base of the jack, the upper por ⁇ v tion' of which is a cylinder, B.
- C is a partition plate which supports .the screw-nut D, and through which partition the. screw passes, as
- E is the screw attached rigidly to the bottom of the cylindrical follower li.
- the follower ts loosely the cylinder B, so that it freely ⁇ revolves therein when hoisting.
- G represents aseries ot' levels attached to the follower, by means of which the screw is revolvedv and the jack operated.
- H is the hoisting block.
- i v I-i is a bush in the cylindrical portion of the follower .Flin which the @mine 11h-0KB iS'Pmed' J is a ball interposed between the bottom of the cylinder of the follower and the lower end of the block.
- This ball is confined in a spherical cavity in each surface, as seen, so that it retains its' place in the center and forms the frictional joint upon which the weight to be raised rests. .v
- K is a double-curved leveiewhich is removably attaohed to the'hoisting block by means of a square lever in the different angles of the socket, it may be thrown (by virtue of its peculiar form) into onr vclifferent positions', so' that the jack may be' guided and kept steady under all circumstances.
- L is a set-screw by which the follower is fastened'- or prevented from turning.
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Earth Drilling (AREA)
Description
EDWIN ACAST-ELLAW, OF SAVANNAH, GEORGIA.
Letters Patent No. 103,563, dated ll/[ay 31, 1870.
muevan Hors'rmamox.
The Schedulereferxed to Ain these Letten Patent and.,makig part Gf the um.
I'o all whom 'it @my concern Beit knowntha't I,EDw1N A. Oilsrnnmw, of Sa'- vannah, in the county of Chatham and-State'oil Georgia, have invented a newand useful Improvement in HoistingJ ack; and I do hereby declare that the Vfollowing is a. full, clear, and exact description thereof',
which will enable others skilled in the art to make and use the. same, refereucebeing had to the accompanying drawing forming part of this specification.
This invention relates to a new and useful improvements inla jack for'hoisting weights or heavy bodies,
Yand consists in the construction and arrangement of parte, as hereinafter more fully described.
^ In the accompanying drawing- Figure 1 'isa top view.
Figurer2f a sectional elevation on the line :v-a: of Y fig. I. l milar letters of reference indicatel corresponding parts.
. A is the stand or base of the jack, the upper por`v tion' of which is a cylinder, B.
C is a partition plate which supports .the screw-nut D, and through which partition the. screw passes, as
seen in the drawing. E is the screw attached rigidly to the bottom of the cylindrical follower li.
The follower ts loosely the cylinder B, so that it freely` revolves therein when hoisting.. G represents aseries ot' levels attached to the follower, by means of which the screw is revolvedv and the jack operated.
H is the hoisting block. i v I-iis a bush in the cylindrical portion of the follower .Flin which the @mine 11h-0KB iS'Pmed' J is a ball interposed between the bottom of the cylinder of the follower and the lower end of the block.
This ball is confined in a spherical cavity in each surface, as seen, so that it retains its' place in the center and forms the frictional joint upon which the weight to be raised rests. .v
K is a double-curved leveiewhich is removably attaohed to the'hoisting block by means of a square lever in the different angles of the socket, it may be thrown (by virtue of its peculiar form) into onr vclifferent positions', so' that the jack may be' guided and kept steady under all circumstances.
L is a set-screw by which the follower is fastened'- or prevented from turning. i
The advantages of this mode of constructing a hoisting-jack are many,- aud must' he obvious to all who are'acquainted with this class of machines.
Having thus described my invention,
I claim as new and desire to secure by Letters Patent` 1. The cylindrical base A, the cylindrical follower F, and the hoisting-block H,'constructe'd, arranged, and operating substantially as and for the purposes described.
In combination witha hoisting-jack, the build, substantially as and for the purposes described 3. In combination with a hoisting-jack, the adj ustable double-curved lever K, substantiali y for the purposes se't forth. l y vED WINl A. GASTELLAW.
Witnessesex MARTIN PAY'roN, ROBERT J. WADE.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US103563A true US103563A (en) | 1870-05-31 |
Family
ID=2173048
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US103563D Expired - Lifetime US103563A (en) | Improved hoisting-tack |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US103563A (en) |
-
0
- US US103563D patent/US103563A/en not_active Expired - Lifetime
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