US19813A - Isaac moore - Google Patents

Description

UNTTED sTATEs PATENT OFFICE.

ISAAC MOORE, OF BROOKLYN, NEW YORK, ASSIGNOR TO HIMSELFAND FRANCIS N. GOVE, OF SAME PLAGE.

STEERING APPARATUS.

Speccaton of Letters Patent No. 19,813, dated March 30, 18%58.

To all whom it may concern:

Bel it known that I, ISAAC MOORE, of Brooklyn, in the county of Kings and State of New York, have invented, made, and applied to use certain new and useful Improvements in Steering Apparatus for Vessels; and I do hereby declare that the following is a full, clear, and eXactdescription of the construction and operation of my said improvements, reference being had to the annexed drawing, making part of this, specification, wherein- Figure l, is a plan of my apparatus complete and Fig. 2, is a vertical cross section through the rudder stock.

Similar marks of reference indicate the same parts in both figures.

Various devices for steering vessels have been'made, in which a screw or screws are used, an instance of which will be found in the patent of John Rapson in England August 23rd 1834i, in whichtwo screws are mentioned as acting on the rudder head by means of nuts and rods to the tiller arms; and in the United States patent granted to Jessee Reid in 1849 an endless screw and nuts are used, as well vas in some other steering apparatus.

My invention therefore does not consist in the screws or any arrangement of the same, but in providing such screws with an endwisemotion or play, resisted by a spring or other yielding pressure, in such a manner that any strain or concussion on the rudder stock from a sea striking the rudder is relieved to such an extent as to preserve said rudder stock, whereas it has been found practically that in all those cases where a screw has been used acting rigidly on the rudder, that if said rudder be on a sea-go ing vessel, the concussion caused by a sea striking t-he rudder, will and does in the course of comparatively short time twist wrench and split the rudder stock tov such an extent as to become unreliable, if not entirely useless; involving considerable cost as well as incurring fearful hazard of the rudder becoming lost or ineflicient and that under circumstances the most critical.

In the drawing a, a, are frames set on blocks or stanchions from the deck and connected together by the side bars I), b. c, is

the main shaft in said frames a, and receiving at one end the steering wheel (Z, of any ordinary construction. On the shaft c, near one end and within the frames is a gear wheel or pinion e, matching into pinions or wheels f f, near the ends of two screws a (right and left handed) the journals of which pass into and through the frames a, c, and are elongated so as to allow endwise play, and the wheels f f are not as thick as the gear e, so that the said wheels f f, by any endwise motion, cannot become detached from the wheel e. On these screws, nuts g g are provided and so fitted as to travel against and be guided by the side bars Z), b, and also receive the circular part of the tiller bolts h, it, that pass down into the slots of the tiller arms 'o'. i

le, is the upper end of the rudder stock.

Z, Z, are springs acting against the end of the screws a', -to resist any endwisemotion to the same. These springs may be of metal in the form of a flat half ellipse as shown, or may be spiral, volute, india rubber or any other suitable spring or equivalent device to act against the ends of said screws with the desired amount of yielding pressure.

It will now be apparent that the position of the rudder can be regulated by the nuts g, g, on turning the wheel d, in one direction or the other and in case a sea strikes the rudder the screws fr, slide endwise in opposite directions against the yielding pressure of springs or equivalent device and prevent any injury arising to the rudder stock. It should be borne in mind that an endwise motion on the screws of from one half an inch to one inch will generally be suflicient to afford all the relief necessary to the rudder stock.

I do not limit myself to the relative sizes of the gears e, and f, nor to the eXact arrangement of the screws and nuts, as allA these parts are well known, and might be varied to suitparticular circumstances, and I do not claim a yielding motion between the steeringgvheel and rudder head, as this has before been allowed by means of springs and by ropes, of a .slightly yielding nature,

but I am not aware of any previous instance in which the screws acting on the rudder head have been allowed an endwise motion resisted by springs or equivalent yielding substantially as and for the purposes speoi- 10 pressure as specified7 therefore ed.

What I claim as my invention and desire In Witness whereof I have hereunto set /J to secure by Letters Patent ismy signature this thirtieth day of Novemf 5 The manner herein described of relieving ber 1857.

the rudder stock of any sudden strain or ISAAC MOORE. concussion by the endwise motion allowed Witnesses: Y to the screws in combination with the HENRY F. WARREN, springs Z, Z, or equivalent yielding pressure, L. NI. STONE.

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