US215712A - Improvement in platform-ladders - Google Patents
Improvement in platform-ladders Download PDFInfo
- Publication number
- US215712A US215712A US215712DA US215712A US 215712 A US215712 A US 215712A US 215712D A US215712D A US 215712DA US 215712 A US215712 A US 215712A
- Authority
- US
- United States
- Prior art keywords
- platform
- ladders
- ladder
- improvement
- braces
- 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
- 238000010276 construction Methods 0.000 description 6
- 235000004652 Tilia americana var heterophylla Nutrition 0.000 description 2
- 235000015450 Tilia cordata Nutrition 0.000 description 2
- 240000007591 Tilia tomentosa Species 0.000 description 2
- 235000010840 Tilia tomentosa Nutrition 0.000 description 2
- 235000013399 edible fruits Nutrition 0.000 description 2
- 239000002420 orchard Substances 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
- E06C1/34—Ladders attached to structures, such as windows, cornices, poles, or the like
Definitions
- my invention relates to new and useful improvements in that class of ladders that are provided with a platform at top, such as are usually employed in fruit orchards, by means of which they may be readily used for any and all purposes to which ladders may be applied.
- the invention consists in the novel construction and combination of the parts, as more fully hereinafter described.
- Figure l is a perspective view of my improved ladder with the platform extended.
- Fig. 2 is a side elevation of the same with the platform folded.
- A represents a ladder of the ordinary construction, except that the highest round or step, a, projects beyond the side rails, b.
- the platform 70 is supported and secured to the plates 0, as shown.
- Guiderods m are secured one to the rear face of each of the side rails, b, to prevent the braces, when released from their supporting-hooks, from swinging outward, and to guide the parts to place when the platform is folded upon the ladder, as shown in Fig. 2.
- the platform-ladder When it is desired to use the platform-ladder for any purpose, the platform is elevated and the free end of the braces and their connecting-rod is engaged with the hooks.
- braces When the platform is not required, the braces are disengaged, and the guide-rods conduct and hold in place the parts folded, as shown in Fig. 2.
- the single ladder A having hooks h and guides m, in combination with the platform k, pivoted to the upper round, a, of the ladder, the braces d, and bar 0, constructed and arranged substantially as describcd and shown.
Description
A. J. ANDREWS. Platform-Ladder.
No. 215,712. Patented May 27,1879,
A ZZcus Z:
{M 5 WM- UNITED STATES PATENT QFFTcE.
ALBERT J. ANDREWS, OF LINDEN, MICHIGAN.
IMPROVEMENT IN PLATFORM-LADDERS.
Specification forming part of Letters Patent No. 215,712, dated May 27, 1879; application filed February 4, 1879.
To all whom it may concern:
Be it known that I, ALBERT J. ANDREWS, of Linden, in the county of Genesce and State of Michigan, have invented an Improvement in Platform-Ladders, of which the following is a specification.
The nature of my invention relates to new and useful improvements in that class of ladders that are provided with a platform at top, such as are usually employed in fruit orchards, by means of which they may be readily used for any and all purposes to which ladders may be applied.
,The invention consists in the novel construction and combination of the parts, as more fully hereinafter described.
In the drawings, Figure l is a perspective view of my improved ladder with the platform extended. Fig. 2 is a side elevation of the same with the platform folded.
In the accompanying drawings, which form a part of this specification, A represents a ladder of the ordinary construction, except that the highest round or step, a, projects beyond the side rails, b. Pivotally secured to this round, at each end thereof, are the plates 0, to the outer ends of which are pivotally connected the braces d, the free ends of which are secured together by the rod 0, said braces being adapted to fold within the side rails, b, of the ladder. To the rear side of each of these rails is secured a hook, it, to receive and support the free ends of the braces and their connecting-rod. The platform 70 is supported and secured to the plates 0, as shown. Guiderods m are secured one to the rear face of each of the side rails, b, to prevent the braces, when released from their supporting-hooks, from swinging outward, and to guide the parts to place when the platform is folded upon the ladder, as shown in Fig. 2.
When it is desired to use the platform-ladder for any purpose, the platform is elevated and the free end of the braces and their connecting-rod is engaged with the hooks.
When the platform is not required, the braces are disengaged, and the guide-rods conduct and hold in place the parts folded, as shown in Fig. 2.
The manifold uses to which a ladder of this construction can be applied are so obvious that a description thereof is deemed unnecessary.
. What I claim as my invention, and desire to secure by Letters Patent, is'
The single ladder A, having hooks h and guides m, in combination with the platform k, pivoted to the upper round, a, of the ladder, the braces d, and bar 0, constructed and arranged substantially as describcd and shown.
ALBERT J. ANDREWS.
Witnesses:
' H. S. SPRAGUE,
OHARLns J. HUNT.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US215712A true US215712A (en) | 1879-05-27 |
Family
ID=2285115
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US215712D Expired - Lifetime US215712A (en) | Improvement in platform-ladders |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US215712A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2749008A (en) * | 1955-03-04 | 1956-06-05 | Harry A Wilson | Ladder platform |
| US5590739A (en) * | 1994-11-01 | 1997-01-07 | High; Dewayne A. | Adjustable extension stepladder |
-
0
- US US215712D patent/US215712A/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2749008A (en) * | 1955-03-04 | 1956-06-05 | Harry A Wilson | Ladder platform |
| US5590739A (en) * | 1994-11-01 | 1997-01-07 | High; Dewayne A. | Adjustable extension stepladder |
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