US88170A - Improvement in steering-apparatus - Google Patents

Description

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re 5mm attut l PETER H. JACKSON,

OF YORK, N. Y.

Letters Pattet No. 88,170, dated March 23, 1869.

To all whom tt may concern Beit known that I, PETER H. J AcKsoN, of the city, county, and State of New York, have invented a new and useful Improvement in Steering-Apparatus for Vessels, of which the following is a full, clear, and exact description, reference being had to the accompanying drawing, forming part of this specification, and in which- Figure 1 represents a partly sectional side elevation First, in a novel arrangement of guide-rod to the nuts, or travelling screw-boxes, relatively to the doublescrew shaft and rudder-head, whereby not only may a single guide-rod suce to direct and keep from turning both nuts, but whereby a shorter screw, or main shaft and steeringfapparatus, generally answer to produce a given motion to the rudder, than whe-re separate guiderods to the nuts, on opposite sides of the screw-shaft, are used, by reason of the arrangement ofthe guide-rod, which is over the double-screwshaft, admitting of a closer disposition of the rudder-head gudgeons to the axis ofthe rudder.

Secondly, the invention consists in a combination of the guide-rod to the nuts, with vertically-sliding bearings, or boxes to the double-screw shaft, whereby, while the rudder-stock is allowed to rise and fall by the working of the ship, or by the stern ruiming aground, the whole is made to partake of the character of a perinanent fixture, combining increased strength with freedom from derangement,the guide-rod and screw both uniting the vertically-sliding'boxes with each other and with the nuts.

Referring to ,the accompanying drawing- A represents the rudder-head, or upper portion of the rudder-stock, carrying oppositely-arranged vertical gudgeons, c (t, which I prefer to lit, or surround with anti-friction rollers, c c, to render easier the working of the apparatus.

B is the main shaft, having right-and-left screwthreads, (l d, on it, and being turned, or operated by a steering-wheel, C.

This shaft B has its bearings in and end-play restricted by boxes D D, fitted, or connected with the standards E E, in such manner as to be capable of sliding vertically, substantially as described in Letters Patent of the United States, N o. 7 7 ,288, issued to me, April 28, 1868, and which provides for the rudderstock rising or falling by the Working of the ship, or stern running aground, without straining or throwing friction on the screw, and keeping the latter in its proper position for working on the rudder.

F F are the nut-s, or screw-boxes, arranged to tit the screw-threads d d, and provided with arms, c e, which have slots, f f, in them, within which the gudgcon-rollers c c play.

These nuts F F are directed and prevented from turning by a single guide-rod, G, arranged to lie parallel with and directly over the double-screw, or steering-shaft B.

By this disposition of the guide-rod G, not only does the one rod serve to guide both nuts F F, but such freedom of space is established on opposite sides ofthe shaft B, as that I am enabled to place the gudgeons a a unich closer to the axial line of the rudder-stock than where separate side-guide rods tothe two nuts are used, thereby diminishing the length of the screw and steeriiig-apparatus generally, fora given stroke of rudder, which is a very important consideration, especially in the application of a screw steering-apparatusto a schooner or other small vessel, on account of the restricted distance there is between the rudder-stock and rail of the vessel.

Either nut F, it will be seen, passes the arm e of the adjacent nut, and in putting the rudder hard up or down, by turning the wheel Q in reverse directions, the gudgeons ct et may, by this arrangement, be worked almost close up to the double screw, or steering-shaft B.

Furthermore, this single guide-rod Gis made to connect both vertical-sliding boxes D D, that are thus tied, and the nuts F F, with their slotted arms e e, carried by the screw and rod, thereby imparting great strength and stability to such working-devices, both in their general operation, and when rising and falling with'the rudder-head, thus giving a permanency, or oneness of character, to the combination, and dispensing with objectionable joints.

What is here claimed, and desired to be secured by Letters Patent, is

1. The combination, with the steering-screw shaft B and nuts FV F, of the guide-rod G, arranged over said screw-shaft, and serving' Ato guide both nuts, or screw-boxes, and prevent then from` turning, substantially as specified.l

2. The combination of the guide-rod G and vertically-slidimz` boxes D D, with the screw-shaft B and nuts F F, essentially as shown and described.

PETER H. JACKSON. Witnesses:

HENRY T. BROWN, FRED. HAYNES.

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