US9498A

US9498A - Parrel for yards of vessels

Info

Publication number: US9498A
Authority: US
Publication date: 1852-12-28
Anticipated expiration: 1869-12-28

Description

UNITED sTATEs PATENT oEEioE.

DANL. S. BAYLES, OF BROOKLYN, NEW YORK.

PARREL FOR YARDS 0F VESSELS.

Specification of Letters Patent No. 9,498, dated December 28, 1852.

To all whom t may concern.'

Be it known that I, DANIEL S. BkYLEs, of Brooklyn, in the county of Kings and State of New York, have invented a new useful Improvement in the Parrel of the Topsail and other Yards of Square-Rigged Vessels; and I do hereby declare that the following is a full, clear, and exact description of the construct-ion and operation of the same, reference being had to the annexed drawings, forming part of this specification, in which- Figure l is a plan of the yard yoke with my improvement attached. Fig. 2 is a side elevation of the same. Fig. 3 is a rear elevation. Fig. 4 is a side view of the rocker showing one of the side plates, and the openings in them and the center plate Vfor the aXis b Z). Fig. 5 is a face view of the same showing the relative position of all its parts.V Fig. 6 is a rear elevat-io-n of side rocker.

Similar letters in the several figures refer to the same parts.

The nature of my invention consists in combining and arranging a rocker in front and rear of the mast, capable of motion in two planes, with rockers at the sides to which the pearl rope leading to the aft rocker is connected; by which the motion of the yard will be rendered free and easy and not liable to injure the mast in cock-hitting the yard, and jam in the jaws of the yoke while being lowered, as in the old mode of construction.

In the drawings A is the mast, B the yard, O the yard yoke, D the pearl rope, c the central rocker, Z (Z the side rockers, and f the rear, or aft rocker. From the center of the yoke a section a. a is cut for the introduction of the central rocker, which is made of hard wood of suiiicient thickness at the center to fill up the section a a, and is dressed off as represented in Fig. 4. The face or part toward the mast may be slight-ly concave so as to conform to its surface. Inlaid in the side of the rocker are the iron plates fr, having in their centers the elliptical openings y; and longitudinally through the middle of the rocker is inserted a similar iron plate having in its center the small aperture y; the whole is firmly fastened by the bolts e passing through the plates 00 w,and the wooden portions of the rocker. The parts t between the apertures in the iron plates a?, are removed, as seen the yoke in rear of the bolt b Z). Thisl method of securing the bolt Z) b in position, affords the means of removing the rocker without disturbing the adjacent parts of the yoke. This rocker thus secured, has a motion about the bolt Z), Z9 as an aXis in a plane perpendicular to the yard B; and at the same time by reason of the form of the opening in the rocker through which the bolt Z) passes it is susceptible of a movement about the middle plate as a center of motion, in a vertical plane parallel to the yard; t-hus giving the rocker c two motions in vertical planes at right angles to each other: to accommodate the latter motion the sides of the section a a. are beveled off, and may be protected with iron plates.

The side rockers Z are inserted in triangular sections cut out of the inner extremity of each jaw of the yoke; the depth of this sect-ion is about the width of the yoke from the end of the jaw to the yard. These rockers are thicker on the side nearest the yard than on the opposite or aft side, and are secured to t-he yard yoke by the bolts e, which for the purpose of strengthening them, first pass through the iron plates f, and then at right angles to the yard through the rocker and yoke, where they are secured next to the yard by the nuts f. These rockers are capable of but one motion, which is about the bolts e as axes, to accommodate which their backs are dressed off and the adjacent parts of the yoke beveled as seen in Fig. 3.

To render my improvement still more complete I construct a fourth rocker f similar in shape to the center one c, which I insert in the pearl rope D directly on the aft side of the topmast A. The two ends of the pearl r-ope are connected with an iron plate and having an eye at each end, and fastened to the back of the rocker by a bolt s running through the center of the plate and rocker, and secured by a nut s;

thus allowing the rocker to play with a swivel motion. The opposite ends of the pearl rope are fastened in the eyes e of the bolts c which form the axes of the side rockers d, and thus give the aft rocker the motion in the plane perpendicular to the yard.

The advantages of my improved construction 0f the yard yoke are important. The rockers being` constructed and arranged as described the motion o-f the yard will be easy and equable, whether it be occasioned by the wind or the working of the vessel. By the great diminution of friction, the topmast will be prevented from chafing and wearing as it necessarily does in the old mode of constructing the yard yoke. A ship having my combination of rockers, if struck by a sudden Squall, when the topsail halyards are let go, the yards will come down upon the cap, and not jam in the jaws of the yoke as would probably be the case with the old construction of yoke, causing either the loss of the top mast, or the ship to be thrown upon her beam ends.

My improvement is cheaper in construction than the old mode with its appendages, and in case of accident is more easily repaired.

I do not claim the rocker simply and by itself as my invention, a saddle or slide having been heretofore used and fastened into the swallow tail of the gaft and boom of sailing vessels applicable to fore and aft sails only. But

What I do claim as my invention and desire to secure by Letters Patent is- The combination of the rocker in front of the mast, and capable of a motion in two planes, with the rockers at the side of the same; said rockers being arranged with respect to each other and the yoke, substantially as described.

In testimony whereof I have hereunto signed my name before two subscribing witnesses.

DANIEL S. BAYLES.

Witnesses:

THOs. G. WHiTEHEAD, JNO. A. DAYTON.