US191614A

US191614A - Improvement in steamboat smoke-stacks

Info

Publication number: US191614A
Authority: US
Publication date: 1877-06-05
Anticipated expiration: 1894-06-05

Description

UNITED STATES PATENT OFFICE.

ALANSON L. ROUZE, BENJAMIN A. LEDFORD, AND JOHN OBRIEN, OF DENVER, COLORADO; SAID OBRIEN ASSIGNOR TO SAID LEDFORD.

IMPROVEMENT IN STEAMBOAT SMOKE-STACKS.

Specification forming part of Letters Patent No. 191,614, dated June 5, 1877 application led April 12, 1877.

To all whom it may concern:

Be it known that we, ALANsoN L. RoUzE, BENJAMIN A. LEDFORD, and J OHN OBRIEN, all of Denver, in the county of Arapahoe, and State of Colorado, have invented certain Irn provements in Steamboat Smoke-Stacks, of which the following is a full, clear, and exact description, reference being had to the accompanying drawing and the letters of reference marked thereon, making part of this specification, in which-5 Figure lis a front elevation. Fig. 2 is a vertical sectional view of our smoke-stack. Fig. 3 is a cross-sectional view on the line fr Fig. 2.

Our invention relates to that class of smokestacks for steamboats that ply upon rivers whose bridges are not provided with drawers, and consequently the smokestack has to be lowered when passing the same.

Our invention, therefore, consists in telefscoping the upper or movable portion ot the smoke-stack in the lower or stationary section, raising and lowering the same by means ot chains and pulleys, and at the same time proriding the upper portion with grooves designed to keep the hoisting and lowering chains in place when being operated, all as hereinafter more fully described.

The construction and operation of our invention are as follows:

A is the deck of the steamboat. B is the lower or stationary portion of the smoke-stack. From the upper section of the portion B, and at equal distances apart, are secured, by staples b2 b2, four link-chains, B B. These linkchains extend to the deck, being fastened to the same by means of staples b1 b1, and are designed to keep the lower or principal portion ot' the smoke-stack in position. These linkchains are also provided with turn-buckles b b, so that they may be tightened or loosened, as occasion requires, without twisting the links of the chain. At the front and rear of the upper section of the stationary portion B of the smoke-stack, and midway between the staples b2 b2, are cut holes or orifices b3 b3, while immediately below said holes are secured to the outside of the portion B slotted ears b*1 b4, having pivoted therein the sheaves or pulleys b5 b5. Over these sheaves b5 b5, and through the holes b3 b3, pass the hoisting and lowering chains C O. One end of these chains is secured to the lower section of the upper or movable portion B of the smoke-stack, the other end being secured to a hook, c, attached to the pulley-block C1. This pulley-block O1 is attached, by means of a cord or rope, a, to another pulley-block, U2, which is fastened to the deck A. D is the upper or movable portion of the smoke-stack. In the front and rear ot' this portion D is cut a groove,D, as shown in Fig. 3, which extends the entire length of the portion D and registers with the holes b3 b3. When the portion D is telescoped in the portion B the chains C C rest in these grooves D D', and are thus not liable to prevent the free movement ofthe upper portion D. To the upper section of this portion D is secured one end ot' the guidechains E E. The other ends of these chains are secured to the staples b1 b1. These guidechains E E are also provided with turn-buckles e e, and become tightened as the movable portion D is extended or raised.

The operation is as follows: When it is desired to lower the portion D to enable the boat to pass obstructions, such as bridges, the cord or rope a which connects the pulley-block C1 C2 is loosened and payed out. This, through the medium of the chains C C, allows the portion D to be telescoped into the portion B, its weight being sufcient to cause it to fall. To raise the same, the corda is tightened, and the pulley-blocks C U2 thus drawn together.

What we claim as new, and desire to secure by Letters Patent of the United States, is-

In a steamboat smoke-stack,the stationary section B, movable section D provided with `grooves D D', chains (l C, sheaves b5 b5, vpul- ALANSON L. ROUZE. BENJAMIN A. LEDFORD.

h. JOHN XISOBRIEN.

mark. Witnesses:

WILLIAM D. TODD, EGBEET HINMAN.