US464678A

US464678A - Mechanism foe ordnance

Info

Publication number: US464678A
Authority: US
Publication date: 1891-12-08
Anticipated expiration: 1908-12-08

Description

4 Sheets-Sheet 2.

V H. SCHNEIDER. BREGH CLOSING-MECHANISM POR ORDNANCE. No. 464,678.

v(No Model.)

Patented D eo. 8, l 8 9 l nwe/v 0 JIM MIW By l' awww w/mfssfsf 4 Sheets-'Sheet 3.

(No Model.) l

f H. SCHNEIDER.

BRBEGH CLOSING MEOHANISM FOR ORDNANGE.

No. 484,878, m8811888 Deo. 8.1891.

WIT/VESSES:

(No Model.) 4 sheets-sheet 4.

H. SCHNEIDER. BRBEGH CLOSING MEGHANISM POR ORDNANCB.'

No. 464,678. Patented Dec. 8, 11891.

1 UNITED j rATEs .ATENE HENRI senNEinER, or mais,

FRANCE, AssiGNoR 'ro SCHNEIDER .e co., or sAnE'i-)LACEQ l BREEcH-CLOSING I MEQH'ANISM 'Fo/R oRnN'ANce.

. SPECIFICATION- forming part of Letters Patent No. l4:646f7, dated December 8,1891.l

Application filed January 9 ,A l 8 91.

To allwhoziz, t may concern:

Beit known thatI, HENRI Sonivmnnmironmaster, of Le Creusot, (Sane-et-Loire,) 'of Paris, G Rue de Provence, in the Republic of France,have invented-certain Improvements in the llreech Closing Mechanism of Ordnance, ot which the following is a specifica tion.

This invention relates 4to improvements/in ,the breech-closing mechanism of ordnance. In heavy guns the operations of openingand closingthe breech by hand present great difficulties and sometimes even impossibilities, owing to the great Weight of l the breech andy bracket support. lThe breech-closing mechanism, according Lto vthis iuventiom'enables the breech of apiece of ordnance to be views of the mechanism.

opened and closed with great facility by means of a continuous rotary movement.

In the Aaccompanying drawings, Figure l representsthe mechanism in vertical sect-ion; Fig. 2 is a frontelevat-ion vof the same.l

the' barrel, and Fig.A l represents the mechan-v ism in plan. Figs. 5. andi G arefperspective Figs. "7, 8,9,- and ld'are enlarged Aviewsofthe lookin-g device.

The brecchfscrew has interrupted th reads*- su'ch' as' are employed in the French artillery and in a certain number of foreignf arftilleries.

flienlthisscrew is disengaged from the barf rel, 1t is supported by a brass bracket.4 Thebreech opening.. and vclosing mechanism isl composed, essentially, of two racks yA andy J, placed at right angles and worked'by two pinions of different diameters keyed'upon the same shaft. The upper rack A, which has two sets ot' teeth, moves in a recess formedin the rear face of the breech. It receives movement from the small pinion B on the shaft E and transmits it to the breech-screw in-order to produce one-sixth of the revolution in one direction or in the other by the intervention 'ot a quadrant C, fixed on the breech-screw. (See Fig. 5.) The lower pins ion l) is provided Wit-h teeth for about onehalt of a circle only. The two pinions are keyed upon their common shaft E at such an angle that whenthe pinion B quits its rack A the lower pinion D engages with the second rack J in the side of the brcchscrew.

Fig;l 3 is a horizontal section -through the axis 'ofj sitel'y-beveled ends.

serianaemzos. (Nomoanm Ar special arrangementotj'the upper-pinion l2 enables the correspondingv rack A. to be rendered 'immovable during th e"l\vi tl 1drawal or return of the sci-euy and the rotation Aof, the 5 bracket, and insures at the same time the re engagem'entiof the rack and its gearinginthe rotation of the' pinion in; the opposite-,direction: With this object the teethof thepinion jl, with' the exception of onev tooth, ex- 6o tend over one-half 'only of the h cightot the piniomand the' teeth on the rack A also extend but one-half of the heightof the rack.

At the extremity of,A the rack isforined av pro jectio'n having a concave outer surfacey op, 65

adapted toengage ywith thecyliudrical part n m on the' upper part of ih epiniou lLFi-gs. i,,and.

The breech is opened by causing the shaft E common to the twopinions to partake of a 7o continuous rotary motiou, and vthe breechis closedl by rotating the said shaft in the opposite direction. In gunsof largey size this ro-l tation is ohtained'by means ot av IWornr'vvqheei I on, the shaft E'anda worm lLon ahorizon-x 75 tal shaft, which is provided with ay crank-handle F." (See Fig.. 2.) i y I The brack'et'K, mounted Vloosely o n 4thehinge vE, isheld stationary until the breech-screw. is

drawn fully 'outby a bolt L, engaging with a' 8o scar M on` the' 'barrel. Fig. ll0 sh,o ws aside section'and'a'full yView of this bolt, ,Whichvis formed of a cylindrical piece having ,opp.0-v

vIt is `freely mounted in the'fbracket K and tends to descend byitselt 85 into the searM. Through the center .o-,the bo'l't islan fopeninghaving' inclines Z to be `acted upon by projections fr ou the counterbolt P. Fig. 8 is a side elevation and a plan of this counter-bolt. 9o

NVhen the breech-screw is closed, the boltr P, which passes through the opening in the bolt L, is pressed against the face of the breech against the action of i s spring i'. In this position (shown in Figfftl and the inclines r r allow the holt to descend, so that its lower end enters the se. r )I and locks the bracket K to the gun-barrel.

To open the breech the crank-handle-F is moved continuously in one direction, and rco through the medium of the worm II and Wormwhccl l, Fig. 2, the hinge E is rotated. At

'- the beginningl of' the rotation the pinion B,

gearing with the teeth b, moves the rack A.'

Theteefth c, gearing with the teeth of the quadrant C, canse'the screw to describe onesixth of a revolution by means of the quad-` rant C. When the sixth of -a revolution is completed, the pinion B leaves its rack.. --'lhe' lower pinion D,'which up to this moment has rotatedA without gearing, becomes engaged, with itsrack J.' The rotation of the hinge E- cQntnuing, the'V pinion D exerts force upon the rack .I and co'mpelsthe breech-screwl to parto pcf the rack A.

move out of its chamber.- During-this period t-he cylindrical part `in n of the upper pinion' engages with'4 the .corresponding cylindrical The breech-screw, being movedl completely out of its chamber, rests' upon the bracket. The projection' on the bracket-having reached the endsof the grooves in'wliich they workon the breech-screw the breech-screw-cannot move farther alon gon the bracket, andasthe pinion D continues to move it causes thebreech-screw to exert a pull on the bracket and rotate it on the hinge E. At the moment -when the breech-screw is completely withdrawn an openings, Fig-1, therein comes I directly over fthe upper end of thebolt L.

'.fentrsjt/he opening K-leaves'the face of the breech the counter-4 Assoon as the bracket beginsy to rotate, the

-bolt L, byineans of its lowerbevel, rides out of the scar M and the pper end of the bolt hen a'slihe bracket boltPs released and the incllnes r r, passing under the inclines l' l in the bolt L, lock ythe bolt- L in its'upper position, (shownjinv Figa-9,) whicllocks the bracket to the breechfscrew.

' By these means inthe'closing v'movement the face of the breech and allowing v the bolt L to J ,breechfscrew cannot be pnshedinto its cham? beruntil after the .bolt P has been returned -toits place by comingin contact with the rear be depressed. The continuous movement of 'rotation of the 'hinge-shaftis thus converted into two reciprocating rectilinear movements,

one that which causes the engagement or disengagement of the screw, the other that which causes the displacement lof the breech-screw, .also into a' movement ofy rotation causing the bracket and lthe screw to oscillate upon the hinge in order to clear the opening of the breech.'

Thematerials, proportions, fox-maand dimatutina COPY 464,678

'breech-guns, consisting of two racks, one

rack operating loosely in a groove in the rear vface of the breech and provided with two sets of teeth, the other connected to the breechscrew, a toothed quadrant carried by the breech-screw and adapted to mesh with one set of teeth on the loose rack, and two pinions on the same `shaft, one to operate each rack,

substantially as set forth.

2. The combination, `in a breech-loading gun, of a breech-screw and a bracket to supportI the breechscrew, with a,v locking device lto first lock the bracket to the breech and then the bracket to the breech-screw, the said lockin g device consisting of a bolt L, working loosely in the bracket, anda counter-bolt to' ,lockt-he bolt L in eitherpositiom-substantially as set forth.

The combination, in abreech-loading gun, of. a breech-screw'and a bracket to sup I port the breech-screw, with a locking device consisting of a Sear on the breech, a bolt with oppositely-beveled. ends an'dprovided with an opening throughthe centethef'sa'id opening having iuclines, anda spring-'actuated counter-bolt passing through the *opening inthe bolt.,` the coun'terebolt having' inclined projections to acton the incli-nesin'thev-bolt, asand for the .purposes set'forth.

4. Breech-clos'ing mechanism consisting of a rack provided :withtwofsets of teeth and working loosely in the rear face ot the breech,

a rack on the side ofthe breech-screw,..a

, '9e toothed quad rant on the breech-screw, `a shaft E, carrying;- two pinionsvto operate the. said racks and provided with a worm-wheel 1,111,

supportin,sr-brackt'at mounted loosely on vthe shaft E, and a shaft provided withja crankhandle and a'worm H, gearing with the wheel I, allsu-bstantially as set forth.

In vtestimony whereofl I have signed my' name to this' specicati'on in the presence of f two subscribing'witnesses. l

- HENRI SCHNEIDER. lWitnesses: l

RoBT. M. vHooPnR,v CHARLES BRENOR.