US178355A - Improvement in ladder-jacks for supporting scaffolds - Google Patents
Improvement in ladder-jacks for supporting scaffolds Download PDFInfo
- Publication number
- US178355A US178355A US178355DA US178355A US 178355 A US178355 A US 178355A US 178355D A US178355D A US 178355DA US 178355 A US178355 A US 178355A
- Authority
- US
- United States
- Prior art keywords
- ladder
- jacks
- improvement
- jack
- supporting
- 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
- 210000000282 Nails Anatomy 0.000 description 2
- 241001274197 Scatophagus argus Species 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06C—LADDERS
- E06C7/00—Component parts, supporting parts, or accessories
- E06C7/16—Platforms on, or for use on, ladders, e.g. liftable or lowerable platforms
Definitions
- Figure 1 is a side view of my improved ladder-jack as applied to a ladder
- Fig. 2 is a top view of the jack detached.
- My invention relates to a simple, strong, and effective ladder-jack or bracket for putting up scaffolding for carpenters, tin-smiths', painters, &c., in a quick and reliable manner without nailing; and itconsists of ajack or bracket made of a forked horizontal pa-rt hooked to the rounds of the ladder, in connection with a brace having a forked lower end fitting the rounds and perforated upper end to lock to the bent end of the supporting part, which is further provided with a sliding piece havinga curved-up end to bear against the wall.
- A represents a ladder of the usual construction used by carpenters, painters, and others; and B, the scat fold-supportin g jack or bracket attached there to by its forked and hook-shaped ends to the rear side of the ladder, as shown in the drawing.
- the horizontal piece of the jack is hooked to a round of the ladder and supported by a brace, O, which has a forked lower end that bears on one of the lower rounds of the ladder and retains in perforations of its upper end the outwardly-bent end of piece B at a horizontal or inclined position, admitting its adjustment to the pitch of the ladder.
- the scaffold-boardin g is laid across the jacks of two or more ladders, and forms thereby a readily put up, cheap, and convenient scaffoldsupporting device for application in the various trades without requiring the use of nails, clamps, &c.
- the horizontal part of thejack that is secured rigidly by its forked and hookshaped end to any round of the ladder, is further provided with a sliding extension-rod, D, guided in staples or hands. a, and secured by a clamp-screw, b.
- the outer end of the extension-rod D is curved and adjusted to bear against the Wall without injuring the same.
- the ladder is thereby steadied and. the scatfolding supported in a stiff and substantial manner to allow even the finest painters works.
- the outer pin end of the jack may either simply be hooked to the brace or applied by a spring key or nut for producing a perfectlyreliable jack device for scaffolds.
Description
A. BAUER.
LADDER JACKS FOR SUPPORTING SCAFFOLDS. No. 178,355. Patented. June 6,1876.
vmurs: a @Md. M, W
N.FETER$, PNOTO-LITHOGRAPHER, WASHINGTON, D C.
UNITED STATES PATENT OFFICE.
ABRAHAM BAUER, OF NEW WASHINGTON, OHIO.
IMPROVEMENT IN LADDER-JACKS FOR'SUPPORTING SCAFFOLDS.
Specification forming part of Letters Patent No. 178,355, dated June 6, 1876; application filed March 6, 1876.
To all whom it may concern:
Be it known that I, ABRAHAM BAUER, of New Washington, in the county of Crawford and State of Ohio, have invented anew and Improved Ladder -Jack for Scaffolding, of
I which the following is a specification:
Figure 1 is a side view of my improved ladder-jack as applied to a ladder, and Fig. 2 is a top view of the jack detached.
Similar letters of reference indicate correspondin g parts.
My invention relates to a simple, strong, and effective ladder-jack or bracket for putting up scaffolding for carpenters, tin-smiths', painters, &c., in a quick and reliable manner without nailing; and itconsists of ajack or bracket made of a forked horizontal pa-rt hooked to the rounds of the ladder, in connection with a brace having a forked lower end fitting the rounds and perforated upper end to lock to the bent end of the supporting part, which is further provided with a sliding piece havinga curved-up end to bear against the wall.
In the accompanying drawing, A represents a ladder of the usual construction used by carpenters, painters, and others; and B, the scat fold-supportin g jack or bracket attached there to by its forked and hook-shaped ends to the rear side of the ladder, as shown in the drawing. The horizontal piece of the jack is hooked to a round of the ladder and supported by a brace, O, which has a forked lower end that bears on one of the lower rounds of the ladder and retains in perforations of its upper end the outwardly-bent end of piece B at a horizontal or inclined position, admitting its adjustment to the pitch of the ladder.
The scaffold-boardin g is laid across the jacks of two or more ladders, and forms thereby a readily put up, cheap, and convenient scaffoldsupporting device for application in the various trades without requiring the use of nails, clamps, &c. The horizontal part of thejack, that is secured rigidly by its forked and hookshaped end to any round of the ladder, is further provided with a sliding extension-rod, D, guided in staples or hands. a, and secured by a clamp-screw, b. The outer end of the extension-rod D is curved and adjusted to bear against the Wall without injuring the same. The ladder is thereby steadied and. the scatfolding supported in a stiff and substantial manner to allow even the finest painters works.
The outer pin end of the jack may either simply be hooked to the brace or applied by a spring key or nut for producing a perfectlyreliable jack device for scaffolds.
Having thus described my invention, I claim as new and desire to secure by Letters Patent- The scafi'old-supporting piece of the jack, provided with a sliding adjustable extensionrod bearing against the wall to form an additional support to the ladder, substantially as set forth.
ABRAHAM BAUER.
Witnesses:
MATTHIAS KIBLER, D. D. JOHNSTON-
Publications (1)
Publication Number | Publication Date |
---|---|
US178355A true US178355A (en) | 1876-06-06 |
Family
ID=2247762
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US178355D Expired - Lifetime US178355A (en) | Improvement in ladder-jacks for supporting scaffolds |
Country Status (1)
Country | Link |
---|---|
US (1) | US178355A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2485685A (en) * | 1946-04-15 | 1949-10-25 | Armstrong Charles | Ladder jack |
-
0
- US US178355D patent/US178355A/en not_active Expired - Lifetime
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2485685A (en) * | 1946-04-15 | 1949-10-25 | Armstrong Charles | Ladder jack |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US2500559A (en) | Ladder platform | |
US352716A (en) | Platform attachment for ladders | |
US221780A (en) | Improvement in adjustable ladder-steps | |
US178355A (en) | Improvement in ladder-jacks for supporting scaffolds | |
US966244A (en) | Ladder-scaffold. | |
US288651A (en) | Michael millbe | |
US741541A (en) | Ladder. | |
US288455A (en) | Folding ladper | |
US159319A (en) | Improvement in step-ladders | |
US198947A (en) | Improvement in ladder-scaffolds | |
US873129A (en) | Scaffolding-bracket. | |
US334772A (en) | Amos d | |
US400008A (en) | Extension-ladder and scaffold attachment | |
US380763A (en) | Matthew h | |
US506561A (en) | Portable scaffold | |
US610487A (en) | Step-ladder | |
US971710A (en) | Bracket for scaffolds. | |
US1077650A (en) | Step-ladder. | |
US350924A (en) | Indow-scaffold | |
US272054A (en) | Fire ladder | |
US471762A (en) | Scaffold-bracket for painters | |
US811514A (en) | Adjustable bracket for employment on windows, ladders, and parapets. | |
US464177A (en) | Scaffold | |
US893123A (en) | Roof-bracket. | |
US931265A (en) | Combined extension-ladder, step-ladder, and scaffold. |