USRE4100E - david n - Google Patents

Description

" iutetl 5mt-es @mnt 69Min.

" Newton, in't-hc county of Middlesex .and State ot' when letting go anchor, &c.

' by s'selacting litter-paw] when-'a capstan is not re- -quired to operate' in both directions.

ment to that class of fulcrum-gear capstans where Ain all the tlgures. Y l

DAVID N. -B. COFFIN, Jn., 0F NEWTON, -AND BENJAMIN WODWABD, OF SOMER- VILLE, MASSACHUSETTS, ASSIGNEES,

n. coFFrN, Jn.

BYA MESSE ASSIGNMENTS, 0F DAVID eN.

Lmm Pwnc N6. 60,060, ma Hmm 21, 1866; am No. 4,100, una' Augen 16, 13h70.

v'uschedulexefbnodtointhehenenmtandmlkingpldthonmo I, DAVID N. B. OOEIIN, Jr.,'ol` Boston and of Mninschusetts, have invented certain Improvements ln Oapstans and Windlnsses, of which the following is a specitlcatiou. l

Naturaontl bjeirts of -the Invention.

Thenature of my invention ielates'toimprovements ln `the construction of ctpstrnis and windlasses and to their combinations, for the purposes. of greater convenieuce, eectiveness, and usefulness, as hereinafter more fully set forth.

.Description of the Accompanying Dru-wing. Figure l is s general sectional viewof my improvements.

vFigure l is aside view of the windlass, pawls, and sockets'. Y

Figure 3 n separate vi'ew of the friction mechanism for controlling the windlass-balrel and chain-wheel Figures 4 and 5 are views ot' the hub ot' the leverhead, showing the socketsor grooves iin' fastening the cover. v

Figure 6 is a separate view'of the bolts. and in-I clines, &c.,-for locking and unlocking the connection between the capstan and second capstan or windlass Figure 7 shows, separately, .the system of bolts and the inclines for operating them, that are located in the tapeten-head.'

Figure 8 represents the bolts located in the capstonbuse for locking the fnlcrnm, gem', 8m., and thc inclines which operate them.

Figure 9 shows the arrangement of gears u f.

FigurelO shows the arrangement of gears s t. The number ol' these gears, however, vmay-be varied according to the tiength required, viz., the gears s and u. A

Figure 11 shows how the fulcrnm gear may be held Figure '12 shows the applicability of my improvelnnfallel slnil'ts and gears are used instead of'angnlar shafts and conical gears. lt also shows treextension of the central shalt, above as well as below, for a combination there as well.

Like letters refer to the same or correspondingqmrts- For examples ot capstans upon which I improve see my rejected application oi the year A. D. 1856, and my patent ot' 1865, (assigned.)

vis applied to the fnlcrum-gear.

The copstans hase is designated by the letter ,v

'and is furnished with the usual pawlpockets,and also a groove'under the projecting part, into which a block or other guide maybe hooked to guide the rope when being wound from an elevation out ol' the proper level to canse it to wind properly ou the barrel without guidance.

Through the center ol' the bed-plate is formed a bearing for the central shaft or spindle b to turn in.

This shalt 'b is keyed, sqnzucd, clutched, vor otherwise made fast to the body of the capsmn c, so as to turn with it.

. In the body ot the barrel c are the shalts tl or c, with a gear on each end, the upper gear, a, playing into a centralv gear. t. connected or connectable to the lever-head i, and the lower ones, u, playing into the fulcrum gear g In the lever-head i are arranged a series ol' verti-I call y-movable bol, g, which,by a partial rotary movement of the series ot' inclines h, are lifted or dropped, thereby connecting or diswnnecting the barrel c to or from the lever-head s'.

Theserinclines' h are moved by the projection j, connected thereto, either directly "or by turning the cover k, into which j is notched for the purpose.

The series of inclines l may be connected with in- The bolts in and inclines l may be omitted, and the center gear, t, permanently'fastened to the lever-head i whenever the iinploved locking and suspension device This device I will pmoeed to describe. .Y

A series ot' bolts, o, is litted loosely in sockets in the bed-platc, so as to be movable vertically by means of a series of inclines, p, movable' in a'circnlar path by means of a projection, q.

The tops of these bolts o have double inclined faces corresponding to the double inclined-faced lugs on the bottom'ofthe fulcrllm-gear, so that, when ,it is desired to drive by the fulcrum-gear, the projection q is pushed by the foot or ban'd so as to lift bolts Lo, and with themY the fnlcrum-gear, and so lock it to the bed-plate by the interlocking of the bolts and lugs. at the proper elevation to beacted on bythe gears non shalts l ore. Y

Aof gears n or any other suitable attachment tothe capstsn-barrel, (see figs. 12 and 1.) When the fulcrum-gear is lelt in this suspended position it simply revolves with` the capstan body, free. and clear of all stationar'y or differently-moving parts, and, conscquently, causes no friction. This device obviates any necessity for allowing the gearing to be. driven when the simple capstan (or purchase) is reqrrircd.

When acapstan is .required only to operate in one direction, the fulcrum-gear may be elevated, locked,

crnrn-gear locked at the proper height, and, the end ofthe paw] and its socket being properly inclined, the

fnlcrnm-gwr cannot rise higher.

When the action of the gears ceases, the pawl,

standing at an inclination, will allow the fnlcrnm-gcar to drop down again to its position of suspension, and, on the capstarr being worked with simple power, (or

purchase) the pawls drag over the pockets, as in ordinary cases.

T he cover fasteningis as follows: Cast-'or otherwise iirstencd to it is thelng r, one,

- two, or more.

1n the hub of the lever-head are cast or otherwise formed grooves or sockets in corresponding relation to the lugs, (sec tigri. 1,14, and 5,) so that,by dropping the cover down,l the lugs passing through the vertical part of the grooves, and then partially rotating the cover, the lngsr catch nader the' horizontal part of the grooves and hohl the cover on, and, by giving a slight inclination to the top of the groove. or lng, the cover' will be tightly held to the head. I make a notch in the cover' at sncir a`point that, when the projection j is at its center of movement, the notch being placed thereon, the lugs c will be directed into the vertical part of the grooves in the hub; then a stop is for'mcd on the head on either side of the projection j, so that, if the cover' be turned one way till the projection strikes the stop, the bolts g are let into action, and the head is lockedl fursirnple power.l

When turned in the opposite direction .to t-lre s tops the bolts gare lifted and the gear t comes into action,1

so as to bring the multiplied power into nsef either by the dropping into action of the bolts fm or by the permanent connection of gear t .to t-he lever-head, and at either extreme of the movement of t-lrc cover it is fastened by the lugs v and grooves, as explained, while at the intermediate position it may be lifted off.

\Vhen it is desired to apply this, capstan to the operation ot' a windlass, the shalt lr is extended below. (or above, as the case may rcquire,) to a bearing, uf, of the windlass.

The windlass-slraft a: is sustained also in bearing 1 and is provided with abevel-gear whccl, z, fast to the shaft, and playing into`gea-r A on shaft This gear A is loose, but may belockcd to the shaf at pleasure by meansof bolts B, which drop into notches or pockets upon the, gear.

These bolts are carried in a. part securely fastened'y to shaft b, asV shown in figs, 1 and (i, and are lifted and dropped into actin byf'neans ofthe inclincs I), whiclh arcmovable in 'a circular path by means of theprojection E. v

Gear' Z lrassecnred to it al pawl-whccl or ratchet, 1, and a series of pau'ls, G,iare arranged to play into it in the usual manner. I, however', construct these pawls with a partly circular head, and cast correspondingly shaped sockets, into which I insert them loosely.

A simple guard, H, keeps them in. All fitting of 'pins and screwing or otherwise tirstcning them iu is "below, (see lig. 6.)

saved, great strength secured, with 'great facility of removal.

The windlassbarrel I turns freely on the shaft a', but nray be locked and unlocked from the pawl-wheel and gear Z at pleasure, by means of key or block K, which tits into recesses in I and F.

On barrel I is formed a friction-wheel, L, which bears the friction-strap M, (see fig. 1 and tlg. 3.) One end of this strap is made fast to some stationary object, while the other end is jointed by a chain or other suitable connection to the windlass-shalt N; which extends upward and downward to all desirable points for working it, and has lever-sockets at all such points, so that, by turning this shaft, strain is applied to the friction-strap, whereby may be controlled the movements both ot barrel I and anchor-chain wheel P, the chaiu-wheel I', being loose onrthe sha-tt, but connectable at pleasure for joint operation with barrel I by means of a key or block, Q, fitted removably to recesses in both P and L.

On' the opposite 'side of shaft b the windlass-shaft rrray be extended, (ser. drawing,) and all the parts duplicated in synnnetrie'tl order ii'om t-lre ratclret-wlrcel, like F, to the chain-wheel, like I, as is often required.

Whena second upright windlass or capstarr is required, it is only necessary to fit a barrel to theexterrsiou of shaft band furnish it with notches .or lugs for bolts B to take, or it may Abe keyed directly to the shatt. It will be observed .that this capstan and windlass may be operated equally well in eitherdirection. \Vhen the windl'assjs operated in one direction, the upper ctprtanspawls will be depended on as when running chain ont of the locker'.

.An additional set ot windlass-pawls may, however, be arranged opposite to those shown, or over the pzrwl-wheel, if required, for heavy work in that direction.

In the part canying bolt B I show pockets for levers, to be used in case it is Claims.

1. The combination of the partially-rotatory cap or cover and the locking or sliding bolts, for the purpose of connecting the 'lever-head to the barrel, or disconnecting the same therefrom, substantially as set forth.

2.Fastening the cover of a capstan by means ot' lugs v in combination with socket-s or grooves in the lrnh, snbstantiallyas described.

3. Tlre'arrang'erncnt ot' tlre'cover-fastenirrg in relation to the locking I neclranisrn of the ca pstan, so that, when the cover' is rotated to a stop in one direction, the bolts willY bei-adjusted for the simple., power, and thc cover' fastened, and, when rotated in the opposite direction to a stop, the cover will also be fastened and the bolts adjusted for the multiplied power, while in 'an intermediate position the coverv is unfasted, and

nray be removed,'substantially as described. 4. The employment ot' the s lnrlt b, extended from the capsta,n, in combination with the shafts l orc, with suitable gears, as u, f, s, and t, substantially as described.

5.'Locking the fulcrum-gear nf a capstan to the bed-plate by means of bolts movable upwatt'l from be'-V neath into contact therewith, substantially as described.

v(i. The employment of a series of inclnes, movable in a. circle, and so applied lin combina-tionwith the fulcrnrn-gear of a capstan as to litt said gear from 'its position ot' inaction to the proper' posi tion to be acted on hy gears playing into it, substantially as described. 'i'. Suspeuding the fulcrnrn-gcar to the rotating body of the capstan. v Y

48. The arrangement of the gears A Z, p-rwl-wheel F, barrel I,fricti0"n Land chain-wheel l), and t-he required to rotate the windlass points of disconnecting, whereby both barrel I and 1L A groove formed under the Vprnjeotzing-pan1z of tintin-wheel I are hlonght under control of the friea cnpsmns hase, substantially as :mii for thel purpose tion mechanism, and yet-used sepamtely for winding, set thrth.

hexwingjn, ma.. substantially as described. Y DAVID N. COFFIN, J n. 9. The windlasshaft N, in combination with the BENJAMIN \VOODWARD.

frictiongbnnd amd barrel of a windlass, substantially as desoribed. \Vitnesses:

10. Tl|e.pnrtlycircular heads nnd sockets, in com- A. K.'CnowEL bination with the pawis of n windlass, snbstnntinllyas Lx'snmnn Bumuwr.

clesmibed.

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