US53566A - Improved step-ladder - Google Patents
Improved step-ladder Download PDFInfo
- Publication number
- US53566A US53566A US53566DA US53566A US 53566 A US53566 A US 53566A US 53566D A US53566D A US 53566DA US 53566 A US53566 A US 53566A
- Authority
- US
- United States
- Prior art keywords
- ladder
- improved step
- braces
- charles
- brown
- 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
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 239000011121 hardwood Substances 0.000 description 2
- 230000004301 light adaptation Effects 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000002023 wood Substances 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
- E06C7/08—Special construction of longitudinal members, or rungs or other treads
Definitions
- Figure l represents the ladder with its back toward us, with the arched braces thereon.
- Fig. 2 shows the brace and its attachings to the sides and steps.
- a piece of suitable hard wood, of the requisite width and thickness required by the various lengths and sizes of step-ladders, is irst bent to an arch by means of steam or otherwise, and is then, by its ends, secured by nails or screws, as the case may be, to the stringpieces or sides of the ladder, on their back parts, as at a a. lt is also secured to the steps, as at b b b. Letting them in a little below the surface adds to their security.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical And Physical Treatments For Wood And The Like (AREA)
- Dry Formation Of Fiberboard And The Like (AREA)
Description
UNITED STATES PATENT OFFICE,
CHARLES W. BROWN, OF NEWARK, NEW JERSEY.
IM PROVED STEP-LADDER.
Specification forming part of Letters Patent No. 53,566, dated April 3, 1866.
To all whom it may concern:
Be it known that I, CHARLES W. BROWN, of the city of Newark, in the county of Essex and State of New Jersey, have invented certain Improvements in the Construction of Step- Ladders; and I do hereby declare the following to be a full and exact description of the same, reference being herein had to the drawings accompanying this specification, and which make part 0f the same.
The nature of my improvement consists in the addition of strength to the ladder by a peculiar form and adaptation of braces to sustain the ladder in the greatest of the strains that come upon it in common use-namely, the diagonal or sidewise strain.
In the drawings, Figure l represents the ladder with its back toward us, with the arched braces thereon. Fig. 2 shows the brace and its attachings to the sides and steps.
A piece of suitable hard wood, of the requisite width and thickness required by the various lengths and sizes of step-ladders, is irst bent to an arch by means of steam or otherwise, and is then, by its ends, secured by nails or screws, as the case may be, to the stringpieces or sides of the ladder, on their back parts, as at a a. lt is also secured to the steps, as at b b b. Letting them in a little below the surface adds to their security.
I am aware of diagonal braces secured by patent, and also of every form of metal braces in use, and disclaim all such.
What I claim as my improvement, and desire to secure by Letters Patent, is-
The arched brace of wood in one piece spanning the ladder-frame, substantially as specied.
CHARLES W. BROWN.
Witnesses: McRErs B. LrNDsLEY, GYRUs C. CURRIER.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US53566A true US53566A (en) | 1866-04-03 |
Family
ID=2123111
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US53566D Expired - Lifetime US53566A (en) | Improved step-ladder |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US53566A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050051386A1 (en) * | 2003-09-05 | 2005-03-10 | Dennis Simpson | Ladder support brace |
| USD855833S1 (en) | 2017-01-04 | 2019-08-06 | Tricam Industries, Inc. | Ladder rail |
| USD860476S1 (en) | 2017-01-04 | 2019-09-17 | Tricam Industries, Inc. | Hinge for a multi-position ladder |
-
0
- US US53566D patent/US53566A/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050051386A1 (en) * | 2003-09-05 | 2005-03-10 | Dennis Simpson | Ladder support brace |
| USD855833S1 (en) | 2017-01-04 | 2019-08-06 | Tricam Industries, Inc. | Ladder rail |
| USD860476S1 (en) | 2017-01-04 | 2019-09-17 | Tricam Industries, Inc. | Hinge for a multi-position ladder |
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