US313690A

US313690A - Step-ladder

Info

Publication number: US313690A
Authority: US
Publication date: 1885-03-10
Anticipated expiration: 1902-03-10

Description

(No Model.)

E. E. SPENCER.

STEP LADDER. No. 313,690. PatentedMar. 10, 1885.

- 4 A. Im" .E fi E l um N. PETERS Phmwumngmpher, washi c.

nirTnn dTaTns HENRY P. SPENCER, OF FORESTVILLE,

lEV YORK.

STEP-LADDER.

SPECIFICATION forming part of Letters Patent No. 313,690, dated P/Iarch l0, 1885.

(No model) To all whom it may concern:

Beit known that I, HENRY P. Srnlvonu, of Forestville, in the county of Chautauqua and State of New York, have invented new and useful Improvements in Step Ladders, of which the following is a specification.

This invention relates to an improvement in that class of step-ladders in which the upper ends of the ladder and platform are connected by metal brackets; and it has for its object to attach the platform to the metal brackets in a simple, cheap, and durable manner, and also to provide a simple and secure attachment, whereby the standard is pivoted to the bracket.

My invention consists of the improvements which will be hereinafter fully set forth and pointed out in the claims.

In the accompanying drawings, Figure l represents a vertical section of my improved step-ladder. Fig. 2 is a fragmentary vertical section of the upper portion ofthe ladder on an enlarged scale, with the standard pivoted to the bracket. Fig. 3 represents a similar view with the standard in the position in which it may be disengaged from the bracket. Fig. 4 is an end view at right angles to Fig. 2. Fig. 5 is a vertical section in line x x, Fig. 2. Fig. 6 is a perspective view ofthe central portion of the brace on an enlarged scale.

Like letters of reference refer to like parts in the several figures.

A represents the main body of the step-ladder, composed oi"` curved side pieces, a., and steps b, constructed in any suitable and wellknown manner.

B represents the top step or platform; C, the hinged standard, and G/ the brace whereby the body A is connected to the standard C. The brace C is composed' of two sections, cc', which are hinged or jointed together at cL and provided with overlapping portions ci. rlhe ends of the overlapping portions c3 are mitered or beveled, as shown at c", and are adapted to rest against beveled shoulders c5 when the sections of the brace are extended, as shown in Fig. l. rEhe inner end of the section c is loifurcated and straddles the inner end of the section c', and the beveled ends c'L of the section c rest against the shoulders c5, formed on the section c', and the beveled end of the section c against a similar shoulder formed on the section @between the bifurcated portion c3.

D represents the metallic brackets, which are secured to the side pieces, a, of the ladder and support the top step or platform, B. The brackets D are provided at their upper ends with ears or lugs d, between which the platform B is arranged, and which are adapted to be bent over the upper edge of the platform, as shown in Figs. l and 2.

The brackets D are preferably constructed ofmalleable iron or other suitable metal, so that the lugs or ears rl can be bent over the upper edge of the platform by a cold shut.

When a wide platform is required, the platform may be formed with openings e, and the lugs or ears d inserted through the openings and bent down on the upper side of the platform, as shown in Fig. 3; or, if preferred, the lug may be made shorter and riveted over the top of the platform. This construction forms a very cheap and reliable means of securing the platform to the brackets, as it dispenses with the use of nails and similar fastening devices, whereby much time and laboris saved.

-F represents a hollow knuckle or socket, which is secured to the npperend of the standard C by means ofangle plates or ilangesf and rivets f. The socket F is adapted to engage over a pin or stud, g. formed on the inner side of the bracket I), whereby the standard is pivoted to the bracket.

G represents a hood or cap formed on the inner side ofthe bracket D above the pin g, and which engages over an extension, f, formed at the upper end of the socket F,

c whereby the socket is held on the pin or stud g. One side ofthe extension f2 is beveled er .chamfered off, as shown at j. so that when the standard is swung outwardly, as shown in Fig. 3, the extension f2 will be disengaged' from the hood G. The cham fered edge of the extensionf2 is formed at such an angle with reference to the lower straight edge of the hood G that the socket F can only be disengaged from the pin f/ when the standard is IOO v Y Y 313.690

form, substantially as set forth. 1884;

2. The combination, with the body of the ladder and standard @,provided with a socket, HENRY P. SPENCER. 5 F, having an extension, f2, of the metallic l bracket D, secured to the body and provided Witnesses: with a pin, g, over which the socketF engages, G. F. GEYER, and a hood or cap, G, adapted to engage ovel1 l JNO. J. BONNER. the extension f2, substantially as set forth.

d, adapted to be bent over the top of the platl f fitness my band this 16th day of April, Io