US1302933A - Valve-lock - Google Patents

Description

M. J. LANGTON.

VALVE LOCK.

v/uPLscATloN FILEDJUNE e. 191s.

1,302,933. Patented May 6, 1919-.

INVENTOR ATTORNEY MORGAN J. LANG'ION, 0F OSWEGO, NEW YORK.

VALVE-Loox.

To all whom t may concern.' Y.

Be it known that I, MORGAN lkLANerofN, l

a citizen of the `United States, residing at Oswego, inthe county of Oswego and State of New York, have invented certain new and useful Improvements in `Valve-Locks, of which the following is a'specication.

Thisinventionis a ylock and has special reference to a valve-lock. y

One object of'this invention is the production cfa valve lock which includes a casing rotatably'mounted upon the valve stem, thus preventing the stem. froml being engaged and operated by an unauthorized party, since the casing will be free to rotate,

,c although an operating mechanism is carried within the casing which is to beoperated by a properly formed key which will'conform to the combination of the structure, thus permitting a valve to be operated. Another obj ect'of this invention is the pro lduction of a pair of normally spaced apart clutch plates having ,registering teeth, although the particularly formed key is inserted through a perforated plate for engaging .Oneplate and moving the same into engagement with the remaining plate, thus causing the teeth to engage, whereby as the key is swung `in a circle, the plates will rotate the valve stem for operating the valve. y

One practical f ormcf construction and as'- sembly of the present invention will behereinafter described and is illustrated in the accompanying drawing, in whichv Figure 1 is aside elevationof the combina tion valve lock as the same appears when use. f 4

Fig. 2 is an enlarged vertical section taken on the line 2-2 of Fig. 1,`the valve stem being shown' in elevation. f

Fig. 3 is=a section taken `on the line 3 3 of Fig. 2 looking in the direction of they arrows. v .i

Fig. 4 is a section taken on the line 4-4 of Fig.- 2 looking in the direction of the arrows.

Fig. 5 is a section taken on the line 5-5 of Fig. 2 looking in the direction ofthe arrows.

Fig. 6 is a fragmentary `plan "view of the key, and

Fig. 7

is a fragmentary sectional view y through the key.

i Speccationvof Letters Patent. 4 l `Appliczaiiicn led J' une 6, 1918. Serial No. 238,541.l

Patented May 6, 1919.

In the preferred embodiment of the present invention about to be described, 5 indicates thevalve casing having a threaded nipple 4 extending therefrom which carries a nut 7 provided with a hollow neck 8. The valve stem 9 extends through the neck 8 and projects thereabove, as shown in Fig. 2. It

will thereforebe seen that the stem is shielded against tampering, as it extends through the neck 8. i

The lock casing 10 has a cover 11 pro-vided i with ears 12 `which ears 12 are retained in engagement with the casing 10 by the screws or other securing members 13. The sleeve 10 extends from the lower portion of the casing 10 and fits over the neck 8, as shown in Figs. 1 and 2.

The primary clutch plate 14 has an annular rim 15 upon its periphery. This clutch plate -has a central opening 16 fitting over the squared end of the valve stem 9. This primary clutch plate 14 rests upon the inner portion of the casing 10, as shown clearly in Fig. 2. This primary clutch plate 14 is provided with an annular row of teeth 17 formed upon `its surface andcontiguous to the rim 15, as shown in Figs. 2 and 4.

The disk 18 bears upon the primary clutch 14 and the screw 19 passes through the plate into the upper end of the valve 9, thus hold inglthe primary clutch plate-14 in engagement with the valve stem, since the plate 18 overlaps the primary clutch plate 14, thus holding the same against displacement. Flat springs 20 are fixed as indicated at 21 upon the disk 18 and extend for considerable distances beyond the surfaces of this plate, as shown in Fig. 2.

The auxiliary clutch plate 22 is positioned above the primary clutch plate 14 and this auxiliary plate 22 has teeth 23 formed upon its lower surface in alinement with the teeth 17 formed on the primaryclutch plate 14. It will be noted that the auxiliary clutch plate 22 rests upon the springs 20 of the disk 18, whereby the two clutch plates will be normally held separated.

A partition disk 24 rests upon the annular rim 15 of the primary clutch plate, while 15, while the auxiliary clutch plate will ro tate in unison therewith, although the primary clutch platewill not rotate under such conditions. f

Stems'25 extends through the disk 24 and are permanently connected to the auxiliary clutch plate at their lower ends while the bridge 26 is supported upon the upper ends of these stems 25.

It will be noted that coiled springs 27 surround thesefstems-25 'an-d'bear at their lower ends upon the disk 24 and at their upper ends upon the bar 26, thus forcing the bridgel bar away from the `disk 24 and holding the auxiliary tumbler plate in close engagement with the disk 24.

The key plate 28 is carried upon the disk 24. This plate carries a plurality `of perforated plates 29, as shown at 30; these perforations may take the form of numerals.

The cover 11 of the casing 10 has a ribbed strip 31 secured thereto in any desired'man ner and under normal conditions the bridge bar 26 is engaged by the ribbed clip 31, as shown in Fig. 2.

It willfbe noted that this bridge bar 26 is provided with a guide groove 26 therein,

as shown iny Fig. 2, while it will also be noted that the casing 10 ris provided with a key opening 32 formed in its side, this key opening as herein illustrated, being substantially T-shaped. By referring to Figs.

6 and 7, the construction of the key will bey disclosed. A body 33 has flanges 34 upon its side edges, to allow the ward plates 35 to be slipped into engagement therewith, while the wards 36 are in the form of numerals formed on these plates 35. The plates 35 are held in position on the body 33 by a block 37. As the perforated plates 29 yof the dial plates 28 are removable and the ward plates 35 of the lkey are removable, it is obvious these wards may be vchanged about to make various combinations. 4

Since the partition disks 24 rest upon the annular rim 15 of the primary clutch plate 14, it is obvious the tension of the springs 27 and the springs 2O of the disk 18 will hold the auxiliary clutch plate spaced from the primary clutch plate. Therefore, if some unauthorized party inserts an implement and rotates the casing 10, it is obvious the bridge bar 24 and the vauxiliary clutch plate will rotate in unison therewith. The primary plate however being keyed upon the upper end ofthe valve stem will not move and for this reason the valve stem will'not be shifted for actuating the valve.

The notch in the bridge bar 26 serves to guide the key 33 that the ward 36` of the key will register with the slots in the perforated plates 29. A downward pressure on the key will then cause the wards 36 to pass through theperforated plates 24 thusl moving the auxiliary tumbler plate 22 toward the primary tumbler plate 14, for moving the teeth 23 into engagement with the teeth 17.

The foregoing description and the drawings have reference to what may be considered the preferred, or approved, form of my invention. It is to be understood that I may make s uqh changes in construction and arrangement and combination of parts, materials, dimensions, et cetera, as may prove expedient and fall within the scope of tne ,appende,d claims.

Having thus fully described my invention,'wht"I claim vas new and desire to secure by Letters Patent, is

1- 1n a @wie offh'uass. described., a@ combination of a 4stein Ihaving',V af protector' neck ttingthereover, a lock casing movably mounted upon said neck, fa *key 'opening' in the l'sideof block'casing, and ya'latch'in'g means within said casing, whereby a key may be insertedinto theforactuating the locking lmeans,'although the side opening in the Casing preintn' @rsultats View ofthe latchingwrneans@ 2. In"zj,devi"ce"of 'the' class described, the combination of' a stem having a protector neck. thereon, a lock *casing* movably mounted upon"` said neck, a yprimary clutch plate yfixed upon Saidstem", 'an' y'ai'ixiliary clutch plate yeldablyheld above theprimary cluteh plate, perforated means above the auxiliary' clutch plate, whereby i a properly'formed `key' may` be inserted into the casing and then passed through lthe means to move theauxiliary clutch plate intoengagement with Athe primary clutch plate sothat asthe leek vcasingfisturned, said stem alsoinrwe.k i. i

3.' In a device of the'class described, the combination of a stemhaving aprotector neck thereon, a leek" casing movably mounted upon said neck, the'primary clutch plate fixed'V upon"`sa1d stem,"I an auxiliary clutch plate, means for* yieldably holding said clutch plates separated, a key plate having a plurality of perforated plates, whereby a properly formedv key may bel insertedinto the casing and 'passed through the perfo# rated plates toward the auxiliary clutch plate and bringthe'auxiliary clutch plate into engagement with thel primaryy clutch plate and-thus as the` lock casing is turned, saidstem will be rotated.` i

4. In a device of the'c'lass described, the combination'of a stemhaving aneck thereon, a lock casing 4movably'mounted yupon'saidl neck, a primary clutch platef `fixed upon saidy stem, and having van annularrimA on its periphery, a partition restingupon saidrim, an auxiliary clutch plate positioned belw said partitionl disk, means forholding Said plates separatedQakey plate carried by said partition, and having a plurality of perforated plates, guide means carried within said casing tov direct a'properly formed key through the openings in said perforated In testimony whereof I ax my signature plates, thus causing the key to engage the in presence of two witnesses.

auxiliary clutch plate and move the same MORGAN J. LANGTON. into engagement with the primary clutch Witnesses:

5 plate, whereby as the easing is rotated, said C. A. LARSON,

stem will be turned. FRED MCGUIRE.

Uopies ot this patent may be obtained tor five eents caen,` by addressing the Commissioner of Fatents.

Washington, D. C."

Images