US36085A - Improved apparatus for working and stoppering chain cables - Google Patents

Description

NITED STATES PATENT OFFICE..

IMPROVED APPARATUS FOR WORKING AND Sl'OPP-ERING CHAIN CABLES.

Specification forming part ot Letters Patent No. 36,085, dated August 5, 1862.

To all whom, t may concern:

Be it known that I, WILLIAM HORATIO HARFIELD, of No. 2 Royal Exchange Buildings, in the city of London and United Kingdom of Great Britain, have invented a new and Improved Apparatus Afor Working and Stoppering Chain Cables; and I do hereby declare that the following is a full and vexact description thereof, reference being had to the accompanying drawings, which form a part of this specification.

This invention consists, first, in a peculiar arrangement of such means as enables me to use, inconnection with a windlass, the chaincarrier or flanged annular recess77 which was patented by rlhomas Brown in Great Britain, April 20, 1847, and in the United States July 25, 1854; and, second, said invention consists in such an arrangement'of the respective parts of my improved chain-carrying windlass that it can be used in connection with the underlifting stopper,7 which was also secured in the aforesaid patent of Thomas Brown.

Figure l is a plan of my improved apparatus for working and stoppering chain cables Fig. 2, a back view; Fig. 3, an end View; Fig. 4, a section in the line y y of Fig. 2; Fig. 5, a section in the line x :c of Fig. 2; Fig. 6, a section in the line z z of Fig. l; and Figs.- 7 and 8 are sections in the line a a of Fig. l.

Similar letters indicate the same parts in all the drawings.

The journals near the ends of the windlassshaft F are received into suitable journalboxes that are secured to the strong supporters E E, while the central journal of said shaft is received into a box that is secured to the central supporter, H.

A strong ratchet-wheel, D, is rigidly secured to the windlass-shaft F on each sideof the central supporter, H, and the portions of said shaft between the ratchetwheels and the end-supporters E E ofthe same receive the chain-carriers C O, the said chain-carriers being allowed to play loosely upon the windlass` shaft, save when they are coupled to the ratchet-wheels D D by the catches g g. The catches g g are short rectangular bars that are received into radial recesses formed in the outer faces of the ratchet-wheels D.. The said bars are also jointed at their inner ends, while their outer ends project beyond the peripheries of the ratchet-wheels and the chain-car riers. Radial grooves are also formed in the.

inner faces of the chain-carriers, the width of which is such that they will freely receive the catchesgg when they are brought Opposite the same. Consequently, it will be perceived that the chain-carriers can be securely coupled to or disconnected from the ratchet-wheels by simply changing thepositions ofthe catchesgg. A curved frame composed of the connect-ed cheeks k k is attached to a portion of the periphery of each ratchet-wheel D by means of themetallic strap d, and these frames each carry a series ofpawls, c c, in such positions that they are enabled to fall, one afteranother, into the teeth of their respective ratchetwheels, as shown in Fig. 5. By means ofthe jointed bridle-rods n n the pawl-frames lc 7c are -connected to opposite ends of the rocker 12,

which is pivoted within the jaws of the strong supporter B. For the purpose of increasing the leverage l shall sometimes place a shorter rocker, a, immediately above the rocker b, and connect the ends of the former to the latter by means of suitable bridle-rods, pp.

Sockets o o are formed in the ends of the rockers a and b for the reception of the handlevers A A, which enable such reciprocating movements to be imparted to the pawl-frames la k as shall impart an almost continuous motion to the windlass-shaft and chain-carriers Whenever it may be desired to do so.

A cylindrical tlange, which projects laterally from the periphery of each chain-carrier C, receives the strap-brake e, whose extremities are pivoted to the operating-leverf, as shown -in' Fig. 4.

A clearer must be employed with the Thomas Brown chain-carrier, for the purpose of raising the chain out of the radially-tlanged annular groove of said carrier. In the construction of my improvedchaincarrying Windlass the aforesaid clearing function is performed by the tapering ends of the curved conveyingtroughs J, which rest upon the barrels of the chain-carriers, while the outer ends ofsaid I troughs are fitted to and securely combined with the lowerportions of the borders of the apertures -in the .main supporters E of the windlass-shaft. Consequently this arrangement enables a chain to be taken from either hawse-hole i directly to and beneath its appropriate chain-carrier, and then to be carriedk over the same and into the clearing and conveying trough J, which will pass the chain through the aperture in the aforesaid supporter E to the deck of the vessel, and at a point which may be in near proximity to the opening in the deck leading t-o one of the chainlockers.

The bringing of the lifting strain to the under side of the chain-carrier, instead of the upper side of the same, as is the case with all other descriptions of windlasses, greatly reduces the strain upon the journal-supporters of my improved windlass, while it also en ables the chain to be more easily lifted out of the radially-hanged groove of the same and conducted to the openings to the chain-lockers; and, furthermore, the said arrangement also enables the Thomas Brown underlifting chain-stoppers to be used in connection with my improved chain-carrying windlass. 'The said underlifting Stoppers are so arranged that by raising the lever Z to the position shown in Fig. 3 the friction-block m will be elevated to the position shown in Fig. 7, and when in that position the chain. can glide freely over the curved jaws of the body of the stopper; and

when the lever 'Z 1s allowedto rest upon the deck of a vessel the frictionblock m will be 'held in the position shown in Fig. 8, and when" the curvedin that position it will enable shoulders above and on each side of the same to stop and securely hold the chain.

My improved chain-carrying windlassv may be constructed with oneor with two chain- "carriers, at the option of the builder.

Suitable pulley-heads, G G, may be placed -upon the ends of the windlass-shaft for the purpose of enabling the windlass to operate `upon ropes or cordage.

Having thus 4fully described my improved chain-carrying windlass, what I claim therein as new, and desire to secure by Let-ters Patent, is

1. Placing the Thomas Brown chain-carrier C upon a windlass-shaft, and then combining therewith, and with either one of the windlasssupporters E, a curved clearing and conveying trough, J, in such a manner that the chain to be operated upon can be taken from the hawse-hole directly to and beneath the said chain-carrier, and then be carried over the same to and into the aforesaid clearing and conveying trough, substantially in the manner and for the purpose herein set forth.

2. When the Thomas Brown chain-carriers are placed upon a windlass-shaft, arranging them with ratchet-wheels and with a system of operating pawls and levers, substantial-ly in the manner and for the purpose herein set forth.

3. Giving such a form and proportions to `the Thomas Brown chain-carrier as shall enable a strap and lever-brake to be combined therewith, substantially as herein represented and described.

4. Mounting a Thomas Brown chain-carrier upon a windlass-shaft when the said chaincarrier is used in conjunction Awith the clearingand conveying trough J, and the Thomas Brown underlifting stopper, substantiallyy in the manner herein set forth.

5. When the Thomas Brown chain-carriers are arranged with ratchet-wheels upon a windlassvshaft,the employment,in connection therewith, of the within-described arrangement of catches, which enables either of said chaincarriers to be coupled with or uncoupled from the wndlass-shaft, substantially as herein set forth.

The above specification of my improved apparatus for working and stoppering chain cables -signedvthis 2d day of May, 1862.

W. H. HARFIELD.

In presence of- WILL DUFF, v

' Notary Public. G. D. DUFF. Notary Public, 5 Nicholas Lome, Lendon.

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