US85612A - Improvement in snub-posts for rafts - Google Patents

Description

:l 5mt@ @www EVANDER PHILLIPS, EDWIN A. DUNl-IAM, AND AARON WINANS, OF

' ALBANY, ILLINOIS.

Letters .Patent No. 85,612, dated January 5,1869; antellatecl December 19, 1868.

IMPROVEMENT IN SNUIB-POSTS FOR RAF'IS, 84e.

To all whom it may concern Be it known that we, EvAxDEn PHILLIPS, EDWIN A. DURHAM, and AARON WIxANs, of Albany, in the county of Whitesides, andi State of Illinois, have i11- vented a new and useful Improvement in Snub-Posts forlVessels, Rafts, 85e.; and we do hereby. declare that thefollowin g is a full, clear, and exact description of the same` reference being had to the annexed drawings, making part of this specification, in which- Figure l is a perspective view, and

Figure 2 is a vertical transverse section.

The same letters are employed in both figures for the indication ofthe same parts.

Our improvement relates to the construction of snub-posts, for vessels, rafts, Sec., .for the purpose of relieving the lines from the wear incidentto the use ofthe ordinary posts; and

It consists in the arrangement of a series of cylinders, revolving on their respective axes, and the brakes connected therewith, for regulating the passage of the line over the same.

A is the head-block of the frame, and

B, the tail-block.

The top of the frame is composed of a central timber, G, and two side pieces, D.

Thebottorn is composed of one or more pieces, E, having holes in proper position, to form bearings for the lower journals of` a series of cylinders, F.

The upper journals vot' the same are formed between the pieces C and D, forming the top of the frame.

These'cylinders have grooves cut in their heads, to receive the line.

Brakes H are arranged on each side, actingk against the follower-blocks K', which are pressed against the body of the cylinders by the lever I and rod Il, the

foot of the lever pressing against one brake H, and

the rod drawing on the other.

The notched plate I2 is for the purpose of holding thelever when the brakes-are applied.

Part of the followers may be pressed against the cylinders, by means of the screws K, whenever it is desired to increase the resistance of a part of the cylinders.

G G are pulleys in the head-block, to guide the rope, and avoid friction, and to apply always the strain directly in the line of the centre-piece O.

'lhe kevel L holds down the line, and prevents it from rising over the heads of the-cylinders.

The line )I is extended across the fra-lne, being carried alternately around the heads of the cylinders, ar-

ranged on opposite sides, as shown.

As the line passes from the coil, beyond the kevel, the resistance is regulated by the force applied to the brakes by the lever I or screws K, thus saving the line` -from wear, for, as it is payed out, it causes the cylinders to revolve7 moving with, but not slipping 011 them. Vhat we claim as our invention, and desire to secure by Letters Patent, is-

` The combination of' the cylinders and the frame with the brakes, for simultaneously bearing against the cylinders, and the screws, for iullependently regulating the friction on the respective cylinders, the said parts being. constructed and arranged substantially as described.

In testimony whereof, we have signed our names to l this specification, in the presence of two subscribing witnesses.

EVANDER PHILLIPS. EDWIN A. DUNHAM. AARON WINAN S. Witnesses I. Si.. MARoY,

W. D. HoRsH'r.

Images