US7197A - Steekihg apfabatets - Google Patents

Description

FHINMS P. QUIMBY, OF' BELFAST, INE.

MENING Fh .llU.

Specicatlon of Lettera Patent No. 7,197, dated March w, 1350.

` ot Maine, have invented a new and useful Machine for Steering Ships and Steamboats, which is entitled Quimbys Patent Steering-Gear, and l do declare that the following is a full, clear, and exact description ot the construction and operation of the same, reference being had to the annexed drawings, making a part of this specification, in which- Figure 1 is a perspective view of the whole machine. Figs.l 2, 3, and '4r are detached parts of the same, with references showing the mode in which the same goes together, as follows:

Fig. 2 is a band attached to the rudder head with a pintle in the center, as shown in the drawing. A, is a socket-joint on Fig. 2. B is a dange on Fi 2.

Fig. 3 is a alt circ e or bow with a hole in the center or cross piece which tits on to the pintle in the center of Fig. 2. C, C, are bones at the ends of the cross ci of the bow 3. D, is a socket joint in l ig. 3 corres ondin to a similar one in Fig. 2 (marked ag. RgE, are caps tor said socket joints. F, F, are dogs attac to the under side of Fig. 3 which plays in the danges marked B, on Fig. 2.

Fig. l is a lever made in two parts with halt rounds in the center which when tother make a circle to inclose the revolving nut which is fitted and held in by trunnions inserted in the circular part ol lever above and below. The lever is fastened together with two screws. At each end of the lever is a groove or slot which receives .the pin in the socket on bow 3 and band 2.

Letter G is the screw (to which is attached the steering wheel) which turns in the boxes on the ends of the center piece of bow 3 marked c, c.

Letter H is the nut (through which the screw passes) in the center of lever 4 fitted in with trunnions which play in the circular part of the lever.

tter ll is a continuation of the center pi of bow 3 by which the machine is sec to the deck of the vessel. e whole to be made of cast iron or other metal. I am aware that a screw placed athwartships and acting upon a turning and traveling nut attached directly to the tiller or its equivalent on the rudder head, h'as been employed for the purpose of steering vessels. ll therefore do not claim the invention of that arrangement.

ln my apparatus l introduce the lever Fig. 4 for the purpose of moving the rudder with the same length of tiller, through a given s ace with less turns of the wheel than can e done in any other way with the. same pitch of screw, by which l obviate a great objection in former apparatus for steering. to wit: the want of command over the rudder by reason of the great number of turns ot the wheel, or the great friction produced by increasing the pitch of the screw. These being the only two modes used by former inventors for obtaining the velocity in the movement of the rudder, to Wit: shortening the tiller or increasing the pitch ot the screw.

In my apparatus any required velocity in the movement of the rudder may be obtained with the same length of tller by diminishing or increasing the length of my lever', without increasing the pitch of the screw, as increasing the pitch of the screw or shortening the tiller makes it operate stiftly and unnaturally. And infact l am enabled by the introduction of the lever to obtain that particular combination of power and velocity which the exigency of all occasions may demand in an apparatus for steering vessels.

Therefore what ll claim as my invention and desire to secure by Letters Patent, is

Attaching the nut acted upon by the screw, to an interposing lever, arranred substantially as herein described by which arrangement I am enabled with the same pitch ot screw and the same number of revolutions of the wheel to move the rudder through a larger arc than in the old appatus.

Witnees:

dnmmw F. Famine, Wn. JOHN Bowan.

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