US396321A - Sectional jack - Google Patents
Sectional jack Download PDFInfo
- Publication number
- US396321A US396321A US396321DA US396321A US 396321 A US396321 A US 396321A US 396321D A US396321D A US 396321DA US 396321 A US396321 A US 396321A
- Authority
- US
- United States
- Prior art keywords
- jack
- sectional
- screw
- sections
- section
- 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
- 230000000903 blocking Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000000875 corresponding Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000002184 metal Substances 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
Definitions
- My invention has for its object to produce a jack adapted for general uses, and especially valuable for use in connect-ion with planers and other metal-workin g machines, where it is frequently necessary to support heavy blocks of metal while being operated upon at various angles.
- Figure l is an elevation of the device complete and in operative position; Fig. 2, an elevation showing the parts detached, and Fig. 3 a longitudinal section corresponding with Fig. 1.
- the sect-ions are preferably provided with central openings, 3, in line with each other, with sockets 3 in their bases and with hubs t at their upper ends, the sockets and hubs all being of exactly the same size, so to make the parts interchangeable.
- ⁇ Vhen made of large size as, for instance, for jacking railway-cars and other heavy liftingeither of the sections 1 may serve as the base of the jack.
- For planers and other machine-shop work I provide a special bottom section, 5, the sides of which are tapered, as shown. This is in order that the jack may be readily supported at. various angles and in various positions where it is not practicable to geta level support for the base.
- top section 6 denotes the top section, which is provided with an internal screw-thread and with a heavy screw,-7, which engages the thread.
- the screw is turned to lift by means of a wrench applied to squared portions 11 or 12, or by pins or levers inserted in holes 13. The operation is so simple as hardly to require explanation.
- jacks consisting of four sections in addition to the special top and bottom sections and the screw.
- the jack is made approximately the length desired by placing a sutlicient number of sections together.
- the base or bottom section is placed firmly in position, and then the screw is rotated to lift the weight to the desired height.
- a lifting-jack comprising interchangeable sections of varying lengths, each section having a socket and hub, as shown, and a top section adapted to engage any section of the series and provided with a lifting-screw of ordinary construction.
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Earth Drilling (AREA)
- Package Frames And Binding Bands (AREA)
Description
(No Model.)
J. H. BAIRD.
SEGTIONAL JACK.
No. 396,321. Patented Jan. 15. 1889.
1 mmmm g miiit UNITED STATES PATENT OFFICE.
J OSEPII H. BAIRD, OF OAKVILLE, CONNECTICUT.
SECTIONAL JACK.
SPECIFICATION forming part of Letters Patent No. 396,321, dated January 15, 1889.
I Application filed June 2, 1888. Serial No. 275,823. (No model.)
To all whom it may concern..-
Be it known that I, JOSEPH I'l. BAIRD, a citizen of the United States, residing at Oakville, in the county of Iiitchfield and State of Connecticut, have invented certain new and useful Improvements in Sectional Jacks; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains ,to make and use the same. I
My invention has for its object to produce a jack adapted for general uses, and especially valuable for use in connect-ion with planers and other metal-workin g machines, where it is frequently necessary to support heavy blocks of metal while being operated upon at various angles.
In order to provide a handy tool for this and similar purposes, I have dew'sed the novel sectional jack, of which the following description, in connection with the accompanying drawings, is a specification, numbers being used to denote the several parts.
Figure l is an elevation of the device complete and in operative position; Fig. 2, an elevation showing the parts detached, and Fig. 3 a longitudinal section corresponding with Fig. 1.
1 denotes the sections, which may be made of any convenient length, and any desired number may be used in a single jack. The sect-ions are preferably provided with central openings, 3, in line with each other, with sockets 3 in their bases and with hubs t at their upper ends, the sockets and hubs all being of exactly the same size, so to make the parts interchangeable. \Vhen made of large size as, for instance, for jacking railway-cars and other heavy liftingeither of the sections 1 may serve as the base of the jack. For planers and other machine-shop work I provide a special bottom section, 5, the sides of which are tapered, as shown. This is in order that the jack may be readily supported at. various angles and in various positions where it is not practicable to geta level support for the base.
6 denotes the top section, which is provided with an internal screw-thread and with a heavy screw,-7, which engages the thread. If preferred, I provide at the top of this section a cappiece, 8, having a socket, 9, and a setscrew, 10, the head of which rests in the socket and which passes through the cap-piece and engages screw 7, so that the cap-piece is held in position, but screw 7 is free to turn independently thereof. In use the screw is turned to lift by means of a wrench applied to squared portions 11 or 12, or by pins or levers inserted in holes 13. The operation is so simple as hardly to require explanation.
For general machine-shop purposes I ordinarily furnish jacks consisting of four sections in addition to the special top and bottom sections and the screw. In use the jack is made approximately the length desired by placing a sutlicient number of sections together. The base or bottom section is placed firmly in position, and then the screw is rotated to lift the weight to the desired height. By this means I avoid the serious inconvenience and other objections attending the common practice of blocking up, and provide a simple tool complete in itself and adapted to all the various purposes for which this class of tools is intended."
Having thus described my invention, I claim As a new manufacture, a lifting-jack comprising interchangeable sections of varying lengths, each section having a socket and hub, as shown, and a top section adapted to engage any section of the series and provided with a lifting-screw of ordinary construction.
In testimony whereof I affix my signature in presence of two witnesses.
JOSEPH H. BAIRD.
Witnesses:
DANL. F. WEBSTER, CHAS. IV. VILLETTE.
Publications (1)
Publication Number | Publication Date |
---|---|
US396321A true US396321A (en) | 1889-01-15 |
Family
ID=2465291
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US396321D Expired - Lifetime US396321A (en) | Sectional jack |
Country Status (1)
Country | Link |
---|---|
US (1) | US396321A (en) |
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2912197A (en) * | 1955-10-31 | 1959-11-10 | Nat Supply Co | Underfloor duct support |
US3220699A (en) * | 1963-12-09 | 1965-11-30 | Joe J Falk | Trailer or vehicle jack |
US3232253A (en) * | 1963-09-03 | 1966-02-01 | Verona M Winters | Adjustable chair |
US3712572A (en) * | 1969-05-16 | 1973-01-23 | Groetschel Karl Maria | Mechanical extension devices for hydraulic or other props |
US4171790A (en) * | 1978-02-24 | 1979-10-23 | J. C. Smith, Inc. | Floral support |
US4304255A (en) * | 1979-05-31 | 1981-12-08 | K-F Prince Valve, Inc. | Swing check valve |
US4562982A (en) * | 1984-02-15 | 1986-01-07 | Panduit Corp. | Stackable cable spacer |
US4569458A (en) * | 1981-09-14 | 1986-02-11 | Horsley Larry L | Mounting for electrical outlet box |
US5876016A (en) * | 1997-05-14 | 1999-03-02 | Urban; Theodore A. | Apparatus and method to elevate an infusion source |
US6042073A (en) * | 1998-04-09 | 2000-03-28 | Moyer; Darwin D. | Stabilizing device |
US20060033089A1 (en) * | 2004-08-10 | 2006-02-16 | Shinn Fu Corporation | Lifting mechanism and spacer block arrangement for lifting jack |
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0
- US US396321D patent/US396321A/en not_active Expired - Lifetime
Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2912197A (en) * | 1955-10-31 | 1959-11-10 | Nat Supply Co | Underfloor duct support |
US3232253A (en) * | 1963-09-03 | 1966-02-01 | Verona M Winters | Adjustable chair |
US3220699A (en) * | 1963-12-09 | 1965-11-30 | Joe J Falk | Trailer or vehicle jack |
US3712572A (en) * | 1969-05-16 | 1973-01-23 | Groetschel Karl Maria | Mechanical extension devices for hydraulic or other props |
US4171790A (en) * | 1978-02-24 | 1979-10-23 | J. C. Smith, Inc. | Floral support |
US4304255A (en) * | 1979-05-31 | 1981-12-08 | K-F Prince Valve, Inc. | Swing check valve |
US4569458A (en) * | 1981-09-14 | 1986-02-11 | Horsley Larry L | Mounting for electrical outlet box |
US4562982A (en) * | 1984-02-15 | 1986-01-07 | Panduit Corp. | Stackable cable spacer |
US5876016A (en) * | 1997-05-14 | 1999-03-02 | Urban; Theodore A. | Apparatus and method to elevate an infusion source |
US6042073A (en) * | 1998-04-09 | 2000-03-28 | Moyer; Darwin D. | Stabilizing device |
US20060033089A1 (en) * | 2004-08-10 | 2006-02-16 | Shinn Fu Corporation | Lifting mechanism and spacer block arrangement for lifting jack |
US7237762B2 (en) * | 2004-08-10 | 2007-07-03 | Shinn Fu Corporation | Lifting mechanism and spacer block arrangement for lifting jack |
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