US219775A - Improvement in rowlocks - Google Patents

Description

B. SNIPPIN. Rowlook.

No. 219,775. Patented Sept. 16, I879.

WITNESS w INVENTOR: J 5f 1211/ W BY Q ATTORNEYS N, PETERS. PHOTO-UTNOGRAFHER. WASHINGTON. D C.

UNITED STATES PATENT OFFICE.

BENJAMIN SNIFFIN, OF

SING SING, NEW YORK.

IMPROVEMENT lN ROWLOCKS.

Specification forming part of Letters Patent N 0. 219,775, dated September 16, 1879 application filed July 31, 1879.

To all whom it may concern:

Be it known that I, BENJAMIN SNLFFIN, of Sing Sing, in the county of Westchester and State of New York, have invented a new and Improved Rowlock, of which the following is a specification] v Figure 1 is a top view of one of my improved rowlocks. Fig. 2 is a longitudinal section of the same, taken through line a: 00, Fig. 1. Fig. 3 is a cross-section of the same, taken through line y y, Fig. 1.

The object of this invention is to furnish rowlocks which shall be so constructed as to support the cars firmly when in use, and at the same time maybe readily detached from the gunwale 0f the boat when not in use.

The invention consists in the rowlock provided with a tapered dovetailed base plate and a set-screw, in combination with a bedplate provided with a tapered dovetailed groove, as hereinafter fully described.

A represents the bed-plate of a rowlock, which is designedto'be securely fastened to the gunwale of the boat.

In the upper side of the bed -plate A is formed a longitudinal tapered dovetailed groove, 0/, to receive the dovetailed base-plateb of the lock B. i

The base-plate b' is tapered to correspond with the taper of the groove a in the bedplate A. it

The bed-plate A is attached to the gunwale with the narrower end of its groove toward the bow of the boat, so that the pressure of the oar in rowing will tend to draw the baseplate b farther into the said groove a, and thus make the rowloek more firm and secure. The base-plate b is held against being pushed out of its grooveby the pressure of the oar, when backing water, by a set-screw, C, which passes through a screw-hole in the rear or wider part of the base-plate I), so that its forward end may rest against the bed-plate A, as shown in Fig. 2. y

I am aware that it is not new to provide a rowlock with a dovetailed base-fitting recess of bed-plate; but this brings the whole leverage across the tenon and will soon result in a fracture under a vigorous pull, while mine brings the leverage close to the gunwale, so that the harder the pull the greater is the resistance. i

What I claim as new and The rowloek B, provided withjaiapered dovetailed base-plate, b, and a setscrew, O, in combination with a bed-plate,*A,provided with a tapered dovetailed groove,}a, substantially as herein shown and described.

hi BENJAMIN sNIFFIN.

mark.

of my invention Witnesses A. HYATT, O. O. YEOMANS.

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