US108483A - Improvement in ladders - Google Patents

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N'PETERS. PHoTo-LITHOGMPNER. WASHINGTON. D C.

@aient @wird JOHN HUGHES, OF NEW BRNE, NORTH CAROLINA.

Latters'Patent No. 108,483, dated October 18, 1870.

IMPROVEMENT IN LADDERS.

The Schedule referred to in these Letters Patent and making part 0f the-Same- Beit known vthat I, JOHN Hccnes, oflew Berne, in the county of'Craven and State of North Carolina, have invented av new and valuable Improvementin Ladders; and I do hereby declare that the following ,is a hvfull, clear, and exact description ot" the construction 'and operation of the same, reference being'had to the annexed drawing making a part of this spe-oif'icatiolnnand tothe letters and figures of reference' marked thereon.

Figure 1 of the' drawing is a front view of my in-r yention.

Figure 2 is a central vertical section of the same.

My invention has relation-to ladders, and consists in passing over pnlleys, bearing in the side bars thereof, endless ropes or chains for the attachment of carriages or hooks, whereby weights maybe elevated or lowered.

The letter A of the drawing designates the ladder, consisting of the sidc-bars B B and the rungs C C.

Grooves n. n are made on the inside of each side bar, beth in front and in rear ot' the rungs.

D I) are the pulleys, seated in recesses in the side bars, one at each end, or sometimes, as D', at an intermediate point, when it is not necessary that the cnd- `less. chain should be carried beyond this point.

e' c represent endless chains, or ropes, passing over the pulleys I) D, and in the grooves n n in tbc side bars.

H H are transverse horizontal arms, of metal or wood, attached to the ropes e c, andvextending across from one side of the ladder to the other.

The ends of each arm H extend within the grooves a n,and the arm is designed to serve as a brace to keep the ropes in proper position, and as a rod for the attachment of the carriage or hook.

In the drawing, the opposite pulleys are shown as being rigidly connected by a bar, d', designed to serve falso as a rung.

This arrangement is adopted for convenience,in applying the power to both endless 4ropes at the same time, in orderthat they may move in concord.

It' the power is' applied only at the bottom of the ladder, as shown by the position ot' the cran-k in the drawing, the upper pulleys may he. separate. -But a crank may be applied to the upper end as well, in whieh'case the upper pulleys would necessarily be connected.-

It desired, a stationary sleeve maybe fit-ted over the bar d.

K K represent carriages attached tothe arms H H, so arranged that weights may be placed thereon,

l whetl1e1"they be ascending or descendimf. These carriages may be made removable.. Sometimes I attach loops or books to thearms H Hto which articles which cannot be conveyed on the carriages may be secured.

\Vhat I claim asmyinyention, and desire. to secure by Letters Patent, is

1. -In combination, the ladder A with grooves n 11,.

the pulleys 1) I), braces H H, and endless ropes c e, as specified. i

2. In combination with a ladder with grooved side bars, the endless ropes e e, pulleys D D, and braces H 1I, the removable carriage K K, so arranged as to present a support for articles, 4whether ascending or descending, in iront or `in rear of 'the ladder, as specified. i

In testimony that l claim thc above, I have hereunto subscribed my name in the presence of two witnesses.

JNO. HUGHES. Witnesses C. W. MCLEAN, J. A. HEnLER..

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