US209015A - Improvement in wagon-jacks - Google Patents
Improvement in wagon-jacks Download PDFInfo
- Publication number
- US209015A US209015A US209015DA US209015A US 209015 A US209015 A US 209015A US 209015D A US209015D A US 209015DA US 209015 A US209015 A US 209015A
- Authority
- US
- United States
- Prior art keywords
- lift
- wagon
- wheel
- worm
- improvement
- 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
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 229910052742 iron Inorganic materials 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
- B66F3/02—Devices, e.g. jacks, adapted for uninterrupted lifting of loads with racks actuated by pinions
-
- 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
- Y10T74/00—Machine element or mechanism
- Y10T74/19—Gearing
- Y10T74/19642—Directly cooperating gears
- Y10T74/19698—Spiral
- Y10T74/19819—Driven rack or shaft
Definitions
- Figure 1 is a perspective view of my jack in operative position.
- Fig. 2 is a horizontal section of the jack.
- Fig. 3 is a sectional elevation of the same.
- Fig. 4 is an elevation of a double worm-wheel.
- the object of my improvement is to produce a wagon-jack of greater power, more compact, and yet cheaper than any jack of similar power 5 and it consists of a standard having a rack along one edge, a lift sliding up and down on said standard, and actuated by the revolution of a flat disk-wheel having upon its face a spiral worm-thread, which engages with the teeth of said standard rack, so that as said wheel revolves the teeth of the standard would alternately engage said wormthread, say, at its end most distant from the center, and be discharged at the end nearest the center, and, of course, the wheel and lift change their relative positions a distance equal to the pitch of the spiral thread.
- A is the standard, which may be'constructed of iron or other suitable material or combination of materials. It is provided with a ratchet-rack, a, along one edge, and a lift, B, which is mortised to admit the standard through it, so that said lift will slide freely back and forth thereon.
- the lift B is steadied and prevented from cramping by stud b, which projects downward and slides on the front edge of the standard, and a frame-slide, c, the two parts of which extend upward along each side of the standard, and are united at the back edge some distance above said lift.
- a pin, D is located for an axial bearing for the worm-wheel E.
- the .wheel E is a flat disk-wheel, with a coiled spiral rib or worm, 6, upon its face.
- the pin D is set with a little upward inclination, so as to permit the Worm e to engage at the upper side with the rack or and clear the same at the lower side of the wheel E, as shown in Fig. 3.
- the worm e engages a new thread at one end and discharges it at the other.
- a wagon-jack constructed with post A, having a foot-piece at its base and a ratchetrack along its rear edge, combined with a lift, B, sliding thereon, and provided with a frame, 0, extending upward from said lift and around behind the rack-edge of said post to support the same, and a spiral worm wheel or disk, E, mounted upon and traveling with said lift and engaging with the teeth of said rack, as set forth.
- a ratchet rack-post, A with a foot-piece at its base, and a lift, B, sliding thereon, combined with a disk, E, mounted upon and traveling with said lift, and provided with a double spiral thread, e, as shown.
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Handcart (AREA)
- Vehicle Cleaning, Maintenance, Repair, Refitting, And Outriggers (AREA)
Description
W. 'BARTRAM. Wagon-Jack No. 209,015. v. P'atented Oct. 15,1878.
M" A I v a a Attest. l
UNITED STATES PATENT OFFICE.
"WALKER B. BABTRAM, OF NORWALK, CONNECTICUT.
IMPROVEMENT IN WAGON-JACKS- Specification forming part of Letters Patent No. 209,015, dated October 15, 1878 application filed February 28, 1878.
To all whom it may concern:
Be it known that I, \VALKER B. BARTRAM, of Norwalk, in the county of Fairfield, in the State of Connecticut, have invented a new and useful Improvement in Wagon Jacks and that the following is a full, clear, and exact description of the same, having reference to the accompanying drawing, wherein Figure 1 is a perspective view of my jack in operative position. Fig. 2 is a horizontal section of the jack. Fig. 3 is a sectional elevation of the same. Fig. 4 is an elevation of a double worm-wheel.
The object of my improvement is to produce a wagon-jack of greater power, more compact, and yet cheaper than any jack of similar power 5 and it consists of a standard having a rack along one edge, a lift sliding up and down on said standard, and actuated by the revolution of a flat disk-wheel having upon its face a spiral worm-thread, which engages with the teeth of said standard rack, so that as said wheel revolves the teeth of the standard would alternately engage said wormthread, say, at its end most distant from the center, and be discharged at the end nearest the center, and, of course, the wheel and lift change their relative positions a distance equal to the pitch of the spiral thread.
That others may fully understand my invention, I will particularly describe it.
A is the standard, which may be'constructed of iron or other suitable material or combination of materials. It is provided with a ratchet-rack, a, along one edge, and a lift, B, which is mortised to admit the standard through it, so that said lift will slide freely back and forth thereon. The lift B is steadied and prevented from cramping by stud b, which projects downward and slides on the front edge of the standard, and a frame-slide, c, the two parts of which extend upward along each side of the standard, and are united at the back edge some distance above said lift.
At the back of the lift a pin, D, is located for an axial bearing for the worm-wheel E. The .wheel E is a flat disk-wheel, with a coiled spiral rib or worm, 6, upon its face. The pin D is set with a little upward inclination, so as to permit the Worm e to engage at the upper side with the rack or and clear the same at the lower side of the wheel E, as shown in Fig. 3. At each revolution of the wheel E the worm e engages a new thread at one end and discharges it at the other. These two ends being at different distances from the center, it follows that the lift will have moved on the standard a distance equal to the pitch of the worm upward or downward, according as the wheel E is revolved forward or backward.
It will be observed that the coiled worm 0 acts directly upon the rack to without the intervention of any intermediate parts, thus requirin g the smallest possible number of pieces. It is positive in its action, and stops at any point desired.
Having described my invention, what I claim as new is- 1. A wagon-jack constructed with post A, having a foot-piece at its base and a ratchetrack along its rear edge, combined with a lift, B, sliding thereon, and provided with a frame, 0, extending upward from said lift and around behind the rack-edge of said post to support the same, and a spiral worm wheel or disk, E, mounted upon and traveling with said lift and engaging with the teeth of said rack, as set forth.
2. A ratchet rack-post, A, with a foot-piece at its base, and a lift, B, sliding thereon, combined with a disk, E, mounted upon and traveling with said lift, and provided with a double spiral thread, e, as shown.
WVALKER B. BARTRAM.
\Vitnesses WM. P. RANDLE, J. O. HANDLE.
Publications (1)
Publication Number | Publication Date |
---|---|
US209015A true US209015A (en) | 1878-10-15 |
Family
ID=2278421
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US209015D Expired - Lifetime US209015A (en) | Improvement in wagon-jacks |
Country Status (1)
Country | Link |
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US (1) | US209015A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1996026679A1 (en) * | 1995-03-01 | 1996-09-06 | Taylor Harold S | Geared external fixator |
-
0
- US US209015D patent/US209015A/en not_active Expired - Lifetime
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1996026679A1 (en) * | 1995-03-01 | 1996-09-06 | Taylor Harold S | Geared external fixator |
US5601551A (en) * | 1995-03-01 | 1997-02-11 | Smith & Nephew Richards, Inc. | Geared external fixator |
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