US15473A

US15473A - And detaching boats to and from their tackle

Info

Publication number: US15473A
Authority: US
Publication date: 1856-08-05
Anticipated expiration: 1873-08-05

Description

N. PETERS. PHDTLITHOGRAPHER. WASHINGTGN D C UNITED STATES PATENT OFFICE.

JOHN M. BROOKE, OF THE UNITED STATES NAVY.

MEANS FOR A.I'TAGI-IING- AND DETACHING- BOATS TO AND FROM THEIR TAGKLE.

Specification of Letters Patent No. 15,473, dated August 5, 1856.

To all whom it may concern:

Be it known that I, JOHN M. BROOKE, a lieutenant in the Navy, have invented an Improvement on the Means of Attaching Boats to or of Detaching Them from the Tackles by Which They are Hoisted from or Lowered into the Water and I do hereby declare that the following is a full and eX- act description thereof, reference being had to the accompanying drawings, making a part of this specification, in which- Figure l, is a front view, Fig. 2, a side view and Fig. 3, a back view. All appropriately lettered.

The nature of my improvement consists in a bolt with hollow head (B), forming part of and opening on a curved channel or delecting surface (O) so that a ball or plummet fitting in the hollow head of the bolt can not descend without being deflected from the axis of the bolt. This bolt is permanently fastened in the boat, and the ball or plummet is fastened to the tackle. A curved slot (D) in the head of the bolt admits the link fastening the ball or plummet to the tackle, so that the support is direct when the boat is suspended. This slot is curved to correspond with the curved channel below. Vhen the boat is supported by the water or axis, the ball descends and is thrown aside; and it may pass up and down close to the curved channel but can not enter it, unless put in by hand, thereby diminishing the danger of a reattachment `after lowering in a sea way. The ball may be confined within the aperture, if desired, by a cock or prop (F) turning on a pin (G) and let into the side of the deectng channel,

but this cock or prop offers no obstacle to the entrance ofthe ball which will push it out of the way. When used it is kept in place against the shoulder (L) by its own weight and the pressure of the ball; and if the ball should then be turned so that the and forming part of a curved channel or deflecting surface; having also a curved slot to correspo-nd with the channel, so that a ball fitting conformably thereto will by the force of gravity, when permitted, follow this curve and be turned aside, and moreover will be prevented from reattaching itself to the bolt if passing up and down before the aperture.

2. I also claim the arrangement of a cock or prop let into the side of the delecting surface so as to secure the ball in the head of the bolt when required; but offering no obstacle to its entrance.

JOHN BROOKE.

Witnesses OHAs. WALTER, A CHS. MCNAMEE.