US918553A

US918553A - Extension step-ladder.

Info

Publication number: US918553A
Application number: US45238508A
Authority: US
Inventors: Eva M Hoppe
Original assignee: Individual
Current assignee: Individual
Priority date: 1908-09-10
Filing date: 1908-09-10
Publication date: 1909-04-20
Anticipated expiration: 1926-04-20

Description

E. M; HOPPE. I

EXTENSION STEP LADDER. ArPLIcATIon rum) 81121210, 1906.

Patented Apr. 20, 1909.

2 SHEETS-SHEET 1.

B. M. H OPPE. EXTENSION STEP LADDER.

AAAAAAAA ION FILED SEPT. 10, 1908.

918,553. Patented Apr. 20, 1909.

UNITE.

EVA M. HOPPE, OF SPARTA, ILLINOIS.

EXTENSION STEP-LADDER.

To all whom it may concern:

Be it known that I, EVA M. HoPPn, a citizen of the United States, residing at Sparta, in the county of Randolph and State of Illinois, have invented a new and useful Extension Step-Ladder, of which the following is a specification.

This invention relates to extension ladders.

The object of the invention is to provide an article of this character which shall be simple of construction, efficient and durable in use, and in which its conversion from a step ladder to an extension ladder may readily and easily be effected.

WVith the above and other objects in view, as will appear as the nature of the invention is better understood, the same consists in the novel construction and combination of parts of an extension ladder, as will be hereinafter fully described and claimed.

In the accompanying drawings forming a part of this specification, and in which like characters of reference indicate corresponding parts :F igure 1 is a view of the device when used as a step ladder. Fig. 2 is a similar view when used as an extension ladder.

The ladder embodies two

ladder sections

1 and 2, the former of which is provided with a series of flat steps 3 and a plurality of rungs 4, while the section 2 is provided only with rungs 5, although if preferred, it maybe provided with flat steps similar to those shown in section 1.

The two sections carry, as usual, a platform 6, which is connected with the section 1 by hinges 7 that are secured by screws to the upper ends of the side rails of the section 1 and to the section 2 by clips 8 that are secured to the under side of the platform and are pivotally connected with the upper ends of side rails of the section 2. The latter connection is secured by slightly reducing the upper ends of the side rail members of the section 2, and securing thereto plates 9 that are orificed, the orifices being designed to register with orifices in the clips 8, and to receive a rod or bar 10, one end of which is provided with a head 11 and the other end of which is threaded and carries Specification of Letters Patent.

Application filed September 10, 1908.

Patented April 20, 1909.

Serial No. 452,385.

a nut (not shown) to hold the rod from accidental disconnection in use. In order to prevent the platform from lifting, should weight be applied near the outer edge of the platform, hooks 12 are provided that engage eyes 13 on the under side of the platform. To hold the two

sections

1 and 2 in the desired spaced adjustment, a toothed bar 14 is provided, which is pivotally connected with one of the side rails of the section 1, and has its teeth 15 arranged to engage with a pin 16 carried by one of the side rails of the section 2. Ordinarily, only one of these toothed bars will be necessary to hold the two sections at the desired adjustment, but, as will be evident, two bars may be employed and still be within the scope of the invention.

As a means for converting the article from a step ladder to an extension ladder, as shown in Fig. 2, the upper rung 4L supports two hooks 17 that are designed to be engaged by the lowermost rung 5 of the section 2. l/Vhen the ladder is to be converted into an exten- .sion ladder, the rod or bar 10 is removed from engagement with the clips 8, and the platform 6 is moved at right angles to its normal position, and the section 2 is inverted to bring its rung 5 into engagement with the supporting hooks 17. As will be obvious, while this arrangement will support the section 2 vertically, yet it would not prevent it from moving away from the section 2 when placed against awall or the like, and in order to prevent this, four angular arms 18 are provided, that are rigidly secured to the section 1, and engage with the outer ed es of the side rails of the section 2, as clearly shown in Fig. 2.

From the foregoing description it will be seen that although the improvements herein defined are simple in, character, they will be thoroughly efficient for the purposes designed, and will result in the presentation of a household article that will meet all the demands of a step ladder and an extension ladder.

I claim An article of the class described comprising two ladder sections, a platform hingedly vided on its unoer side With clips being dein the presence of tWo Witnesses.

signed to be engaged by the upper terminals EVA M HOPPE of the other section, and a rod engaging the i 5 letter terminals and the clips to hold the two sections assembled.

In testimony that I claim the foregoing as I connected to one of the sections and pro- I my own, I have hereto afiiXed my signature \Vitnesses J. BRANNY, C. A. IVIOLAUGHLIN.