US265034A - Mode of operating pawls used in lifting-jacks - Google Patents
Mode of operating pawls used in lifting-jacks Download PDFInfo
- Publication number
- US265034A US265034A US265034DA US265034A US 265034 A US265034 A US 265034A US 265034D A US265034D A US 265034DA US 265034 A US265034 A US 265034A
- Authority
- US
- United States
- Prior art keywords
- lifting
- jacks
- pawl
- mode
- operating pawls
- 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
- 230000036633 rest Effects 0.000 description 2
- 230000003245 working Effects 0.000 description 2
Images
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/02—Surgical instruments, devices or methods, e.g. tourniquets for holding wounds open; Tractors
-
- 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
- Y10T74/21—Elements
- Y10T74/2133—Pawls and ratchets
- Y10T74/2136—Pivoted pawls
- Y10T74/214—Multiple tooth
Definitions
- FIG. 1 shows a sectional drawing of a lifting-jack, in which A A represent the standard orframe; B, the lifting-bar; (l, the pawl; the oscillating support, and E the grooved seat or flanges in frame upon which the oscillating support and pawl, or either of them, may rest.
- Fig. 2 represents a back view of the pawl, in which the letter F shows the hollow to admit the support, and G the grooved seat.
- Figs. 3 and tre present other views of the oscillating support, the upper end of which extends in and may be pivoted to the grooved seat Gr, while the lower end rests in and may be pivoted to the grooved seat E at bottom of' pawl-box or in the frame.
- the oscillating support when the teeth are engaged .and the pawl holding the load the oscillating support is at an angle pressing and holding the pawl against the teeth, making it impossible for them to slip, and when disengaged by hand or otherwise the oscillating support will raise and suspend the pawl from the seat, (or flanges,) causing. it to move free and avoid friction.
- the pawl may be operated by a spring or springs, or by the means of gravitation.
- the oscillating support or supports in combination with a pawl or pawls, substantially as described.
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Surgery (AREA)
- Heart & Thoracic Surgery (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Automatic Assembly (AREA)
Description
. (No Model.)
' P. M. DE WEESE.
7 MODE 0? OPERATING PAWLS- USED IN LIFTING JAOKS, &c. No. 265,034.
Patented Sept. 2 1882.
Invenior. l WQQQM .UNITED STATES PATENT OFFICE.
naAnors M. DE WEESE, or oHILLIooTHE, OHIO.
SPEOIFIOATION.forming part of Letters Patent No. 265,034, dated September 26, 1882,.
Application filed April 3, 1882. (No model.)
To all whom a may concern:
Be it known that I, FRANCIS M. DE WEESE, of Ghillicothe, in the county of Ross, in the State of Ohio, have invented a new and useful method of operating and supporting a pawl (or pawls) 'for the purpose of holding weights or loads in lifting jacks, elevators, cottonpresses, 850., of which the following is a specification. V
For the purpose of more readily explaining the workings and merits of my invention, refercnce may be had to the aecompanyingdrawings, in which- Figure 1 shows a sectional drawing of a lifting-jack, in which A A represent the standard orframe; B, the lifting-bar; (l, the pawl; the oscillating support, and E the grooved seat or flanges in frame upon which the oscillating support and pawl, or either of them, may rest. j
Fig. 2 represents a back view of the pawl, in which the letter F shows the hollow to admit the support, and G the grooved seat.
Figs. 3 and trepresent other views of the oscillating support, the upper end of which extends in and may be pivoted to the grooved seat Gr, while the lower end rests in and may be pivoted to the grooved seat E at bottom of' pawl-box or in the frame.
It will be readily understood that when the teeth are engaged .and the pawl holding the load the oscillating support is at an angle pressing and holding the pawl against the teeth, making it impossible for them to slip, and when disengaged by hand or otherwise the oscillating support will raise and suspend the pawl from the seat, (or flanges,) causing. it to move free and avoid friction. The pawl may be operated by a spring or springs, or by the means of gravitation.
Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-
1. The pawlhavin g the'hollowF and grooved seat G. A
2. The oscillating support or supports, in combination with a pawl or pawls, substantially as described.
, F. M. DE WEESE. Witnesses:
E. KURIGK,
S. E. MOSHER.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US265034A true US265034A (en) | 1882-09-26 |
Family
ID=2334297
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US265034D Expired - Lifetime US265034A (en) | Mode of operating pawls used in lifting-jacks |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US265034A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3173660A (en) * | 1961-12-26 | 1965-03-16 | Universal Tool & Stamping Comp | Horizontal type lifting jacks |
| US3802658A (en) * | 1972-07-19 | 1974-04-09 | Beatrice Foods Co | Jack stand |
-
0
- US US265034D patent/US265034A/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3173660A (en) * | 1961-12-26 | 1965-03-16 | Universal Tool & Stamping Comp | Horizontal type lifting jacks |
| US3802658A (en) * | 1972-07-19 | 1974-04-09 | Beatrice Foods Co | Jack stand |
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