US83084A - Improved ladder - Google Patents
Improved ladder Download PDFInfo
- Publication number
- US83084A US83084A US83084DA US83084A US 83084 A US83084 A US 83084A US 83084D A US83084D A US 83084DA US 83084 A US83084 A US 83084A
- Authority
- US
- United States
- Prior art keywords
- rail
- ladder
- rods
- ladders
- improved ladder
- 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
- 101700003795 PDZD2 Proteins 0.000 description 2
- 235000020639 clam Nutrition 0.000 description 2
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06C—LADDERS
- E06C1/00—Ladders in general
- E06C1/02—Ladders in general with rigid longitudinal member or members
- E06C1/14—Ladders capable of standing by themselves
- E06C1/16—Ladders capable of standing by themselves with hinged struts which rest on the ground
- E06C1/18—Ladders capable of standing by themselves with hinged struts which rest on the ground with supporting struts formed as ladders
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06C—LADDERS
- E06C1/00—Ladders in general
- E06C1/02—Ladders in general with rigid longitudinal member or members
- E06C1/38—Special constructions of ladders, e.g. ladders with more or less than two longitudinal members, ladders with movable rungs or other treads, longitudinally-foldable ladders
- E06C1/381—Ladders with rungs or treads attached only to one rigid longitudinal member
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06C—LADDERS
- E06C7/00—Component parts, supporting parts, or accessories
- E06C7/42—Ladder feet; Supports therefor
Definitions
- the nature of this invention is in the formation of a ladder, for general uses, and especially for purposes of plucking fruit from trees, by a combination of two single rail-ladders, either of which ladders being arranged to be used singly; and said general nature applies, furthermore, to a system of trussing the long single ladder-rail, to prevent said rail from deflection under weight, and'from side oscillations.
- Figure 2 is a front elevation thereof.
- Figure 3 is a plan of a long ladder and its trussing.
- Figure 4 is a central section of such long ladder.
Description
timed lio www.
P. M. PAPIN. or sT.
LOUIS, MISSOURI- Laim Patent No. 83,084, dated october 13, 1868.
The Schedule referred to :ln these Letters Patent and making part of the Baume.
To all vwhom it may concern.-
Be it known that 1,1). M. PAPIN, of St. Louis, in the county of St. Louis, and State of Missouri, have made certain new and useful Improvements in Ladders; and I do hereby declare that the following is a full and clear description thereof,reference being had to the accompanying drawings,`and to the letters of reference marked thereon.
The nature of this invention is in the formation of a ladder, for general uses, and especially for purposes of plucking fruit from trees, by a combination of two single rail-ladders, either of which ladders being arranged to be used singly; and said general nature applies, furthermore, to a system of trussing the long single ladder-rail, to prevent said rail from deflection under weight, and'from side oscillations.
To enable those skilled herein to make and use my improved invention, I will now describe the same fully, having reference to the accompanying drawings, of Which- Figure l isa side elevation of the double ladder, and
Figure 2 is a front elevation thereof. p
Figure 3 is a plan of a long ladder and its trussing.
Figure 4 is a central section of such long ladder.
Iconstruct my said ladder of a single central rail or rod, A, through which the rounds c are passed, and wherein they are secured in the usual manner.
In order to steady the single rail, when placed in the nearly upright position in Which it is used, I connect to the said rail A the spreading feet,'A1, connected at' upper ends with A, and by the suitable cross-bar, c. A
- Furthermore, to accommodate any inequalities of height of ground, I arrange, on said feet A, the sliding feet A2, held by the set-screw a2, Whensecured and guided by the clamps a3.
In the lower surface of the sliding feet A", I arrange the spike-studs, c4, to impinge on the oor or ground, and thereby secure -the base of the ladder in position.
When I arrange the rail A to connect with a second In case the rail A becomes unduly long, I truss the v l same with the metallic rods'b, securing said rods at each end of the'rail A, and spreading said rods b at the middle of the rail to meet the ends of across-bar,
b, said cross-bar being secured to the under side of y the rail A.
In order, moreover, to prevent side oscillations of the rail A, I brace the same laterally by the angleblocks b2, which are secured to said cross-bar b. Thus, owing to the depth of the truss-rods b below the rail A, they aid firmly to resist Weights placed onthe rounds, and owing to the spreadingof said rods b at their connection with b1, and owing to said angleblocks b2, the rail is prevented from lateral motion, and the Whole forms a truss against weights applied vertically and laterally.-
In 'long ladders, I use the double hooks C, at the upper end of the rail, to hold said end in its position. In shorter ladders, a single hook, C', as in iigs. 1 and 2, will suice. Having thus fully described my invention,
What I clam, is'- j The rail A, spreading feetAl, sliding feet A2, truss rods b, cross-bar b1, angle-blocks b2, and hookl, the
Whole being combined and arranged inthe manner described and for the purpose set forth. p
In testimony of which invention, I hereunto set my hand, this 29th day of October, 1867 ,in presence off P. M. PAPIN. Witnesses:
GEORGE P. HERTHEL, Jr., A. HERTHEL.
Publications (1)
Publication Number | Publication Date |
---|---|
US83084A true US83084A (en) | 1868-10-13 |
Family
ID=2152577
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US83084D Expired - Lifetime US83084A (en) | Improved ladder |
Country Status (1)
Country | Link |
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US (1) | US83084A (en) |
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0
- US US83084D patent/US83084A/en not_active Expired - Lifetime
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