US1589271A

US1589271A - Apparatus for timing artillery projectiles provided with clockworkoperated fuses

Info

Publication number: US1589271A
Application number: US39700A
Authority: US
Inventors: Varaud Andre
Original assignee: Individual
Current assignee: Individual
Priority date: 1924-06-28
Filing date: 1925-06-26
Publication date: 1926-06-15
Anticipated expiration: 1943-06-15
Also published as: DE456076C; CH114218A; GB248992A; CH111384A; GB236234A; FR599458A

Description

June 15 1926. 1,589,271

A. VARAUD APPARATUS FOR TIMING ARTILLERY PROJECTILES PROVIDED WITH CLOCKWORK OPERATED FUSES Filed June 26. 1925 2 Sheets-Sheet 1 June 15 1926. 1,589,271

A. VARAUD APPARATUS FOR TIMING ARTILLERY PROJECTILES PROVIDED WITH CLOCKWORK OPERATED FUSES Filed June 26. 1925 2 Sheets-Sheet 2 e iL Patented June 15, 1926.

ANDRE VARAUD, OF GENEVA, SWITZERLAND.

APPARATUS FOR TIMING ARTILLEEY PROJECTILES ZEROVIDED WITH CLOCKWORK OPERATED FUSES.

Application filed June 26, 1925, Serial No. 39,700, and in Switzerland June 28, 1924- i The object of the present invention is the provision of an apparatus for timing artillery projectiles provided with clockwork operated fuses of the type in which the wind- 6 ing of the power spring of the clockwork and the adjustment of the time for the ignition vof the charge of the projectile are simultaneously effected by turning a key which is axially disposed at the point or nose of the projectile and by which the key may be turned through a predetermined angle which is determined with great exactness:

The apparatus made in accordance with the inventionpreferably comprises a frame or fixed body member, a rotary member for turning the key of the projectile or a plurality of rotary members for simultaneously turning the keys of a corresponding number of projectiles a crown wheel having internally arranged teeth for controlling the said rotary member an operating handle for driving the crown wheel in one direction only, a movable dial adjacent and mounted co-axially with the crown wheel and provided with circular graduations. means for turning the movable dial by hand independentlyof the crown wheel and for holding the movable dial stationary in as many individual angular positions as the fuse may be given different setting positions,together with a spring for automati' cally returning the crown wheel to an initial position after each timing operation. The

r frame or body member. the graduated dial and the crown wheel are each provided with an abutment which cooperate for limiting the angular displacements of the crown wheel in opposite directions as will be here inafter more particularly described.

Figure 1 is a sectional plan ofan apparatus made in accordance with my inven' tion. taken on line 1-1, Fig. 3.

Fig. 2 is a transverse section on line Ill-11, Fig. 1. i Fig. 3 [is a sectional elevation on line IIIIII, Fig. 1. i

Fig. 4 is a view similar to Fig. 2; but taken on line IIIIII, Fig. 1.

Fig. 5 is a sectional elevation of the clutchmechanism showing the parts in engagement, and

Fig. 6 is a similar view showing the parts of the clutch disengaged.

Thebody a of the apparatus is preferably box shape and is supported on feet indicated at u. A block 6? see Fig. 3, is fixed on'the frame a by screws or otherwise and is provided with two eye-shaped recesses each adapted to receive the downwardly directed point of aprojectile, the angular position of which is fixed in any suitable manner. j

. Thewinding and simultaneous setting'key A ofeach one of these projectiles is driven by means ofa tenon mounted with a certain vertical play in a transverse slit 0 provided at the upper end of a vertical shaft 0. This latter is by means of a key 0 fixed to thehub of a pinion (Z meshing with the inner teeth of a controlling crown e.

This crown carries a stop 8 cooperating on the one part' with a fixed abutment 1- (Fig. 2) for limiting in one direction the travel of the control crown. and on the other part, with amovable abutment t fixed by means of screws 25 under a graduated crown n having helicoidal teeth a in mesh with a tangential worm o This wormturns in a bearing a fixed in the interior of the body a of theapparatus and is driven by hand by means of a small handle 0*. On the shaft of thishandle is fixed a graduated drum 0 cooperating with the fixed index 0 y This shaft carries also a. toothed disk 0 fixed behind the drum 0 in such a manner as to cooperate with a spring pawl '12 subjected to the action of a spring '1) which tends to hold it constantly engaged with one-of the teeth of the disk 0 Thereare as many teeth on the disk 0 as there are divisions of the drum 0? so that without the necessity of any groping the angular po sition of the handle 0 can be determined which corresponds to one of the setting positions of the graduated drum 0. The spring pawl'c works vertically in a guide 0 fixed by the aid of screw a (Fig. 3) on the inner face of the body a of the apparatus.

The pitch of the screw 0 is calculated in proportion to the graduation of the crown n in such a manner that the latter describes an angle corresponding to one of these divisions for each turn of the screw. Each division of the crown can be subdivided in as many fractions as there are divisions of the graduationonthe drum o The'mockm of the em the (it sired 'settingrposition is effected bye tanv geliti'al worm 0 which itself is immohilize ci in :OIie' of the setting pdSit-ions: indicated by; "thedlfum o hy the spring-pawl 'v. V In the-f. cgwaemnfi thegbodiy a ojibthefl appnijzutus; an; opening constitutinga,"window is pmxriudedi;-

'in whieh the gr aduations of. the crown n? V are successively visi'blewhen; t hamnsof iS, op era-ted;

K'bH-l-Tbeari rmeshe's withe'pfni-oiiwiiitegml withe heiii is:

tu njthe centrolling crew'n e to its rest} posifi'on, which is" dietermined by the :centatct of the abutment s with the fixed abutment 1%:

"The controlling crown a in" addition t9 thii'nternal teeth meshing with the pi iiqns a isflPrOviddf with lateral teeth '0 which engagejwiti i' af'bevelpifiibn made i nfonef iecewith thG'slBve-{ffl-Q" end-1 qwinga i'affehetfisl-eeyel Lslidin-gly mounted on-a'square m 'of the shafted-and subjected. tqthe action offanpaWl This" handle- (On-each sha-ftio ags'ieeve y i fixed? by meansfqff a b I the front wall 01 the body "a and berries; a I ring 7 screwed o its free sc 'ew threaded The epei'ati'ng' teiid's tohold the respective lateragl" teethof 1 the} sleeve-- f andv of the" hand1ef in'mesh; A protecting sleeve ftlfiiXG- 011- the hear f 'prote-eb: the ratchet devise; off

1h this construction vifled for diseonneeting ithe handle 7* after eix'htimih'goperation are co'i'itmlled the jeetiles A which Q are to be timed lare eset in piece. s action of the eam is" foll'iw'sE:

aetibn of the weight (if-the two pibjeetiiee zs'gli'cie' 12 so as vtci'" openate i-aspningr push 2] plate 2 :1 epliplin-ggpl'ete pe is normally hei inoperative position by-"the sprihg push z? WbTkiTi'g in the hofllbw axle f'theg'sha ftw position'shewn ih Figf 69i I pesitionfahd the coupling platefz} 'isf ei- 7 turned by the spring push 12 tofit's iilopera-fl" Th s sleeve rotates ftfre'elfy 111 a; heeriiig pit f fi'n' an bpenii g; of

feilbwing m'an neifby the aetion of removing" he timed are; set 111'- place this'pieteie-shifted;

-t{0 "its-operatiye position Fig. 5'in"which it f mechanicallyeomieetsgthe" shaft w; and the 70 V t'czimibegdriveminj ol ediree pinion f from which ensues fthttthe; con-,- tn'oiling erowilt-e ,tionk by meansfo fgthe handle f 7 a When the-two projectile; A are-taken 0fi', the two sieevesa z are. realm-(1m their prior "pinion f are diseonneetedif.

In the 'interi r of the b uide inwhich the slideigfi Works; This I frame i'saprovided: with an iniiei'wprojeetibn v t a iwl'ii'ch' Serves: a

spring c is rempioyeiu I v The "Opel" fellows? 1 rhe fappamtli timiii g" desir-edi by means oi" the? handle: "0

we f

tangential; worm- .9.3 is thereu iron:v held i sta -i ,tione'it'y ing thisfpqsitidn; by ineiine' of the flingposition l by thkwdrmi 22?. ",Tiheaappak riedirbytheug' prevent d'eteifieratinithedriv i 7 appgifatiisf is; last theIigniti01i';%*eaeh "one ot these? operations e biiigsuhdivided iii-the allowing maimen:

thefehy musing-the eoiipliiigqef; the shaftfm th P t i and thefwinding qf the reti rn spi ing 0115i; the 0 j t e pi ejectilesftimed vthereby causing automaticallythei'i'disee fliisspnin'gijm t v It will be undenstoedthat;the?*aippamtilst 'tinsteadaoi beingc0n$tructedior iteceiwiiig a =14. Automatic; iretliiili; of? the: 'contreliiilg f. Crown" 6* uiiderfthevzxctiom of: the "spring 20 1 prndaiceci'ras S0011: aeitheaineiitie 0i theishanr' die tf jis nolongero'ppojsedtb fthe action of V projectile or projectiles with the point or points thereof extending downwardly, the

apparatus may be so made as will also be understood that obvious changes in the construction of the apparatus may be jectiles made without departing from the nature and spirit of my invention.

1 claim as my invention:

1. An apparatus for timing artillery proprovided with clockwork operated fuses of the type described comprising a frame, a rotary member for turningthe key of a projectile, a crown wheel having internal teeth for controlling said rotary member, a movable dial placed coaxially with the crown wheel and provided with circular graduations, means-for driving said dial inde endently of the said crown wheel and for ho ding the same stationary in any one ofas many angular positions as the fuse may receivedifferent setting positions, and three abutments provided respectively on the frame, the movable dial and the crown wheel to limit the angular disdirections.

2. An apparatus for timing artillery projectiles provided with clockwork operated fuses of the type described and according to 1 claim 1 comprising a handle for driving the crown wheel, means for disconnecting said handle after each timing operation, and a spring for automatically returning the crown wheel after each timing operation,

the said means being operative automatically by the removal of a projectile which has been timed. i

3. An apparatus for timing artillery projectiles provided with clockwork operated fuses of the type described and according to claim 1 comprising a graduated dial, a gear having helical teeth associated with the graduated dial, a tangential worm in constant mesh with said gear, an operating her, and a spring pawl cooperating with handle for manually driving said worm, an arbor for said handle, a toothed member carried by the said arbor, a graduated member also carried by the said arbor, a fixed index cooperating with said graduated 111811111- for actuating the said push member said toothed member to exactly determine each angular position of the said tangential worm corresponding to a graduation of the said graduated member to hold the said dial stationary in any adjusting position of the apparatus each one of which corresponds to ed to drive the shaft in one direction only,

a pinion in constant mesh with the crown wheel but normally running idle on said shaft, a coupling plate, a disengaging spring for normally holding the said coupling plate in any inoperative position, and means operative on placing a projectile to be timed in position in the apparatus for shifting the said coupling plate into engagement with the said pinion.

5. An apparatus for timing artillery projectiles provided with clockwork operated fuses of the type described and according to claim 1 comprising a cam connecting with a rotary member, an oscillating lever actuated by said cam and a push member actuated in one direction by said lever for coupling the handle to the timing mechanism when placing a projectile to be timed in position in the apparatus, and a spring in the opposite direction for disconnecting said handle and returning the said cam to its initial position in removing the projectile from the apparatus.

6. An apparatus for timing artillery projectiles provided with clockwork operated fuses of the type described and according to claim 1 comprising a tenon mounted with a predetermined extent of vertical play on the said rotary member for turning the key of a projectile, and a damping spring which acts upon said tenon for tending to prevent its deterioration by the placing of a projectile to be timed in position in the apparatus.

In testimony whereof I affix my signature.

ANDRE VARAUD.