Page:Scientific American - Series 1 - Volume 012 - Issue 35.pdf/1

 mttilan. THE ADVOCATE OF INDUSTRY, AND JOURNAL OF SCIENTIFIC, MECHANICAL, AND OTHER IMPROVEMENTS

VOLUME XII. NEW-YORK, MAY 9, 1857. NUMBER 35.

I i holds it, or aids in holding it in any position, I is worked in a very simple manner by the

IMPROVED CAPSTAN FOR SHIPS.

i

Scientific American, PUBLISHED WEEKLY At 128

Fulton Street, N.Y. BY MUNN do CO.

(Sun Buildings.!

Fi;S. 1

Fij. 2.--;

___

O. D. J,lUNN, S. H. WALES, A. E. BEACH.

S 47 td t ;

niu: dn?E'ni.:r!!icE hkA!C: to receive subscription! American. Single copies of the paper are on folalfl' at the office of publication and at all the periodical atores in thi city. Htooklyn, and JelSQY City. TER.M8-@2 for the Scientific

cipal citios

Responsible Agents and towns in

may aho be the

United States.

fou nd in

all the prin

'I foot.

manner by the hand, while the brake which

motion to the helm is turned in t he ordinary

A represents the head of tho rudder; B the

tiller or helm, and G the steering wheel.

the extremity of B is carried an upright shaft, 0, meshing into shaft the curved rack, D, which connected 'to the

On

at the bottom of which is a short gen.r wheel,

l atter IS

holted firmly to the deck. is steering wheel by bevel

The

upright F, of

shaft, gears ,

main

employed.

D'?

del' in six months. See Prospectus on last page. �. year,-l

in adv n c.�

a

and

the re�

No Travelin Agent!!

wheel, G. results in revolving the wheel, 0, and consequently in turning the rudder. to

revolution given by the belmsman to

c on ceale d w ithin the h ou s in g, E, so that any

the

the

Improved

Capslan

for

"bill'.

number of r ev o l utio n s of the s teering wbeel

The

The accompanying figures illustrate an im was iesued to

required

provement in caps tans, for which a patent March l a st.

instead of a horizontal shaft or s pindle.

to a single windlass, placed upon a vertical

J. B. Holmes, on the 3d of A captan is somewhat similar It

words, the "purchaee" of the man at the

angular motion in the rudder, or in other wheel in turning the rudder, depends on the

pr odu c e a cer t ain amount of

relative pr o p or tioJ;l s of the parts, but is in pretty r api d turning of the s hip. of h oldin g or che cki ng the

tended always to be such as will allow of a The means referred to of br a ki n g and thus

is generally employe d as a raising or moving ser or cable around i ts vertical barrel, and machine, by winding up a d rag chain, baw

raise o r move a heavy body. It is tl.liI1 o s t convenient and useful machine, and its applica

payi ng it off as regularly as it is wound on, to

wheel by friction are as follows :-The upright r i e d a t each extremity, not in the housing, E, shaft which carries the gear wheel, 0, is car

motion of the

t i o n on shipboard

gener"l application of any machine-it. common use--renders every improvement on it,

bodies is familiar to mot

and for moving

heavy Th e

but i n the lever, H, which latter is free to re This lever, H, is

persons.

through the l u gs, 1.

volve on the bolt represented, which passes

connected by a link, L, to the lever, J, which lat

however small, of great moment, because it affects a vast number of persona terestlil. The barrels of windl8.ll ses are mad. called weIpa, for the purpose of and in

ter is hinged at K, to the under side of B, an d 8.11 t o

can be worked hy the foot in such a manner turn H slightly on its longer portion of the lever, J, is divided as

center, 1.

The

with a series of elevation! and depress ion s, the former holding the chain as it is wouud on.

represented, so that it may be operated from

O wing failt as it ill wound upon it. The welps are barrel, and it prevents the chain from riding, also made high to catch the uneven parts o f ( one part overlieing another,) as it is wound the chain, which enables it to be held by at the upper portion of the barrel and run off one or two tnrns lowing a very short harrel to be used.

either side of the shaft, F.

to the manner in which these elevations and depressions have been formed hitherto on the barrels of windlasses, the chain did not slide . freely on them towards the middle as fast as

foot to J, the lever, H, is moved, and the bevel wheels in E, as also the gearing, 0

it! correponding gear, hut

are ordinarily in but a fair con tact each with

The gear wbeels

on applying the

it was wound up, and as a consequence one was liable to overlie another. The

around

the barrel, thus al It

below. For more information, see note at the end of the description of the succeeding machine,

pressed together with great

force, and the

an d

D, are

turn

simple improvement in this capstan obviates this, and some other defects in their construction. Fig. 1 is a perspective view; fig. 2 a verti

also dis pen s es with the use of feeding strips to keep t h e chain on the small part of the

increased friction tends to hold the whole firmly, or to allow it to work only with considerable difficulty. Instead of forcing the

which is an improvement by the same inventor.

HOLMES' SHIP STEERING APPARATUS.

pinion, 0, into clo.er locking contact with the

fixed rack s, D, the link, L, may he made by

taken at the center of the barrel head and capstan head. capstan is secured firmly t o the deck; B is The hot'.om plate, A, of the

ce.l section, and fig. 3 a horizontal

section

a ilimple and obvious

modification

of

the

parte to press directly agains t D, but the arrangement represented is preferred because it not only aids the hell'!lsman in retaining the command of the helm and holding the wheel

the stationary shaft on which the barrel, 0, moves; D is the cap piece firmly attached to the barrel. The upper ring of the capstan

with ease in any desired position, but takes up any 10lt motion or backlash which is usuing in such sitUations, and compels the whole to work IImoothly and silently, or to remain

has notches for the reception of a sliding clutch, S. A plate, F, is keyed fast to shaft

ally an objection to the employment of gear

gear wheels and pinions in the cap, consisting slow motion of the capstan. the capstan turns freely

B to sustain the spindles or centera of the of multiplying gearing, b, a, 0, for the fast or Tbe head, H, of B. on the ahaft

without any play whenever the wheel, G, is held firmly, however violent and intermittent may be the action of the waves.

The curved rim, M, fixed to the deck on the rack, D, is also an important feature of the invent ion, as it serves by the aid of the fric side of the rudder head opposite to the curved

or openings in it. and when these are turned round, the barrel 0 i s revolved.

The handspikes are inserted into the holes

clutch, S, is fitted into head H.

The iliding When this

clutch is 110 moved that a projection on it takes into one of the recesses of the cap-piece D, the head, H, and the cap'piece, D, then clutch together, and the barrel, 0, is rotated by direct action. By moving the clutch, S ,

tion roller represented between it and the rudder head, to relieve the latter from all the side strain which would otherwise be tbroWD on it by the device described. Without this

provision the effect of the foot applied to J would result in causing violent friction The ends to be accomplished by the great manded to turn the rudder of a large ship varieties of steering devices used on ship and especially to steady and retain the same board are quite peculiar. It is necessary in when its broad surface is acted on by a heavy

and

a little further inward, the projection on the

clutch takes into a receSI in plate G, as round thus communicates motion

wear in the rudder post, at the point where the rudder head emerges from the deck, but

shown in fig. 3; the head, H, when moved

throngh

with this gnard all tendency thereto is entirely removed. It will be observe d that this device gives

pinion O-fast on this plate-- t o the wheels, thus setting in motion the multiplied gearing,

as required. ridges, W.

position of the helm quite rapidly from an intermediate position to one

" tacking 11 or " goin about,'! to

change the

� ea..

Mr. John B. Holmes, of this city, is t he in

The barrel, 0, is formed with w elps, or

extremity of

ventor of the improvement illnstrated by the accompanying perspective view, which is secured by letters patent dated March 3d, of the of moving or changing the position helm or tiller with a kind of brake

middle, leaving space. of greatest w id th there

These are made narrowest at the

rable to shift the helm with great alacrity from oth r. one extreme of

its motion, and in some cases it is desi

is in every respect trong and serviceable. It is now in successful use on

sometimes inclines to do, in a heavy sea, and two large

ruU liberty to the rudder to rise .lightly, as it

easily towards the middle of the barrel

s tructi n g them, the chain slides freely

whole length of the barrel.

between them ; the weipa are also made the

By th1l.l con as

an d

obtaining of any extremely great multipli

e

While these necessities preclude the

it! pOllition to

the

present year.

It combinlll a suitable means ships, the Caravan and the Pomona. of the

cation of " purchase " by the introduction of ing to bear a considerable amount of friction to worm wheels or the like, a great force ia deaid in holding it. The wheel which gives

for bring

South street, or 10 and 62 Attorney s t reet,

addressing the agent, Mr. John

Further information

may b e

obtained by R. Pra tt, 67

this city.

� 1857 SCIENTIFIC AMERICAN, INC.