US1294208A - Lock. - Google Patents

Description

H. G. VOIGHT.

LOCK. APPLICATION FILED IULY I7, 1918.

Imywu www Feb. u, 191e).

falli/twv? i" [MMM ATTORNEY y i f lli HENRY Gr. VOIGHT, OF NEW BRITAIN, CONNECTICUT, ASSIGNOR TO SARGENT & COM- .'PANY, OF NEW HAVEN, CONNECTICUT, A. CORPORATION OF CONNECTICUT.

LOCK.

To all whom t 'may concern Y Be it known that I, HENRY G. VoIGH'r, a citizen of the United States, residing in New Britain, county of Hartford, and State of Connecticut, have invented certain new andv useful Improvements in Locks, of which the following is a full, clear, and eXact descrlption. l

This invention relates to locks and more particularly to pin tumbler locks which are "intended -to operateelements under the oily greasy conditions hereinafter set forth.

The construction of the ordinary p in tumbler lock is such that if a considerable .amount-of grease or oil is permitted to reach the pin tumblers, it 'will interfere with the proper operation of the small sliding pin tumblers rather than improve qthe operation of the lock as might be expected. The pin tumblers normally slide free within' the pin tumbler sockets and are usually forced toward the key barrel by a very light coiled spring. If the relatively heavy oil such as is commonly found about the bearings of an automobile is permitted to work its way into a cylinder lock, it will tend to cause the pin tumblers to stick in their sockets and thereby seriouslyinterfere with their proper operation.

One objectof my invention is to provid-e al cylinder `lock with simple but eiiicient means for preventing oil and foreign matter fro working its way into the lock lcasing around the keyr barrel.

Another object -of my invention is to provide yielding means for retaining a 4key barrel in its unlocked position whereby the jolts and jars to which the lock may be submitted will be prevented from causing the key barrel to rotate.

Still another object of my invention is to improve the means for operatively connecting" the key barrel of the cylinder lock to the bolt or the like operated thereby. i

To these and other ends the invention con,- sists in the novel features and combinations of parts to be hereinafter described and claimed.

In the accompanying drawing,

Figure'l isv a sectional view of a casting having a sliding bolt mounted therein .and a cylinder lock for operating this bolt, the

bolt being shown in its 'lowered or locked position;

Fig-2 is a fragmentary sectional View of y cylinder lock about its key barrel.

"Specification of Letters Patent. .l Patentgd Feb, 11, 1919, Application led July 17, 1918. Serial No. 245,384.

the casting shown in Fig. l', showing the cylinder lock in section and the key barrel in its unlocked position; y

Fig. 3 is a rear end view of the cylinder lock showing the bolt operating means upon the inner end of the key ba'rrel in full lines in its locked position, and in dotted lines in its unlocked position;

F ig. 4is a rear end view of the cylinder lock with the bolt operating means removed from the key barrel; and

Fig. 5 is a sectional view taken on the line 5-5 ofFig. 2. In the embodiment of my invention illustrated in the drawing, the numeral l0 designates a casting such asis commonly provided upon automobiles to adjustably support the -gear shifting lever. provide means for locking the gear transmission mechanism so that an unauthorized person will not be able to shift the gears of the automobile, I preferably provide the casting l0 with a lateral extension in which a bolt receiving whichsocket the bolt 12 is slidably mounted. The casting 10 is also preferably provided with a ring-like extension 13 in which a cylinder lock, designated in its entirety by the numeral 14, is mounted. The sliding bolt 12 may be provided with any desired means (not shown) upon its lower end for locking the transmission gears or for performing any other desired function. Since it is necessary to'- keep the transmission gears and all other elements of the transmission mechanism well greased or oiled, this grease or oil necessarily .works its way up the sliding bolt 12 and, if not prevented, will work its way into `the interior of the cylinder lock 14. If this oil or grease ispermitted to reach the interior of the cylinder lock, .it will seriously interfere. with the proper operation-of the pin tumblers, as above pointed out.

One object of my invention therefore, as above stated, is to prevent grease, oil and other foreign matter from working into the The usual construction by which the bolt 12 locks the transmission gears or other elements against movementA is such that whenv4 the key barrel is rotated to its locked position, Athe bolt 12 operated thereby is moved downward to the position shown in Fig. l into locking engagement with the element In order to Y socket 1l is formed, inA

controlled by the lower end of this bolt, and when the key barrel is turned toits unlocked position, the bolt is raised as shown in Fig.' 2, in which position its lower end is out of locking engagement with the elementengaged thereby. It will therefore be seen that when the automobile is operated, the bolt 12 f is in the raised position shown in Fig. 2, and the key barrel is turned to its unlocked position. Due to the fact that this bolt 12 is supported in substantially a vertical position by its key barrel when the bolt is in its inoperative position and when the car is being operated, the jolts and jars to which the parts of the car are submitted under normal running conditions will tend to shake this bolt 12 in a downward direction and thereby tend to cause the key barrel to rotate from its unlocked to its locked position. p

In order to avoid the objectionable featuresA above referred to, the cylinder lock 14 in the particular form shown, consistsA of the usual casing 15, escutcheon or face plate 1G which rests upon the outer edge of the ring-like portion 13 of the Casting, 10, and ofthe usual key barrel 17 and pin tumblers 18. The inner end of` the key rbarrel 17 preferably extends a` short distance beyond the inner face of the casing 15 and upon this inner end is mounted an eccentric disk 19, this disk preferably having a socket formed in its inner face to receive the projecting. inner end of the key barrel, and is rigidly secured to the' key barrel by a pin 2O passing through the disk andkey barrel. The eccentric disk 19 has operative engagement with a lnotch 19 formed in a lateral face of the bolt 12, the construction being such that when thc key barrel is rotated, theeccentric disk rotate's in the notch -19 and moves the bolt 12 in a' longitudinal direction. The engageme-nt` between the eccentric disk and the notch19 serves also as means for preventing the bolt 12 fromrotating Within its socket 11. ing'15 isformed a circular groove or shal low socket 21 concentric with the drill hole in -this casing, in which the key barrel is rotatably mounted, and in this groove or socket is preferably mounted a washer 22, formed of felt or of any other suitable fabricated material which will tend to prevent oil and grease from working into\the lock case ,15 ,about the key barrel. By forming a socket in the inner face of theeccentric disk 19 instead of forming a drillhole entirely kthrough this disk to receive the protruding end of the key barrel 17, oil is excluded from the inner end of the key barrel, and since the washer 22 is of'sutlicient width to Contact with the inner face of 'the disk 19, foil and grease are very effectively excluded from the interior of the In the inner face of the cas-4 cylinder lock by the construction just de- .23 in the lock casing 15 somewhatsimilar to the sockets in .which the pin tumblers 18 operate. In this socket is preferably provid-ed a ball 2-1 forced toward the key barrel by a coiled spring 25. This ball 21 lis positioned to engageI the key slolt 26 formed in the. key barrel as shown in Fig.

5 when .the key,l barrel is turned to its un-A locked position as shown in this tig-ure. The pressure exerted upon thel ball 24 by its spring is sufiicient to retain this ball in` engagement with the key slot 26 under normal conditions, and thereby prevent the key barrel from rotating, but the pressure exerted by this spring is not sufiicient to prevent 'the key barrel from being easily rotated manually from its unlocked to its locked position when it is desiredfto move the bolt 12 from its unlocked to its locked position.

In order to provide means by ywhich the key 27 may be removed from its key barrel when the `latter is turned to its unlocked position, shown in Fig. 2, I form'fa trough, such as 28, in the lock case 15, of sufficient depth to permit the pin tumblers 1S to move foutwardly into this trough a suflicient distance to permit these pin tumblers to clear the teeth of the key in order that the" same may be remove'dfrom its key barrel. This means by which fthe key may be removed from its key barrel while the key barrel is in its unlocked position is de scribed more fully'and claimed in the .copending application of John H. Shaw, Serial No. 221,241. The enlarged knurled head 29 formed upon the outerend of the key barrel is provided in order that the same may bev grasped by the fingers to rotate the key barrell to its locked position after the key has been removed. f

From the above description, when read in connection with the drawing, it will be apparent that t'he ball 21 which cooperates with thc key slot 2G forms a very simple but etlicient means foryieldingly locking or holding the key barrel in itsv unlocked position, and that the wiasher'22 when positioned between the inner face of the lock ease 15 and the eccentric disk 19 in-the m'anner above described, forms a simple but satisfactory means for excluding oil and the like from the interfor of the lock casing.

Although I have illustrated and described l mee-,zoe as a key slot formed therein, and means co operating with said key slot for yieldingly olding said barrel in its unlocked position. Q. A cylinder lock comprising ay case,A a key barrel having a key slot formed therein, and spring operated means mounted in' said case cooperating with said key slot for yieldingly holding said barrel in its unlocked position.

3. In a cylinder lock a key barrel having a key slot formed therein, pin tumblers for locking said barrel against rotation, and spring operable means engaging said key slot for yieldingly holding said key barrel in its unlocked position.

4.' In a cylinder lock, ay case, a key barrel having a key slot-formed therein, and spring operated means mounted in said case and positioned to engage said key .slot to yieldingly hold said key barrel from being rotaited from its unlocked to its locked position.

5. A cylinder lock having a loc-k case, a key barrel, locking means for said key barrel, and a Washer of fabricated material surrounding said key barrel to exclude foreign matter from said barrel locking means.

6. A cylinder lock having a lock case, a key barrel, locking means\for saidv key barrel and fabricated means positioned Within saidcase to exclude foreign matter from said barrel locking mea-ns.

7 A lock having a lock case, key operable means within said case, and fabricated material Within said case to' exclude foreign matter from said key operable means.

8. A cylinder lock having a lock case, a key barrel, locking means for said key barrel, and a'Washer of fabricated material surrounding the inner end of said key barrel to prevent liquid from Working into said case around the 'key barrel.

9. A cylinder lock having a lock case. a key barrel, locking means for said key barrel, bolt operating means upon the inner end of said key barrel, and a pad of fabricated materia-l between said case and bolt operating means to exclude foreign matter from said case. l A

10. A cylinder lock having a lock case, a key barrel .and pin .tumblerswithin said case, a bolt operating means. ipon the inner end of said key barrel, andf'awasherof fabricated material between-'said case and-"1.5,lv

bolt operating means'. y

ll. A eylinderllockhaving a look case, a key barrel and pinitmnblers witliin said case, a bolt operating meal1s'iipenM the inner end of said key barrel, said operating means having a socket formed therein for housing' the inner end of said key barrel, and fabricatedmeansbetiveensaid case and .bolt operating means for excluding foreign matter from said case.

12. In combination with a cylinder lock, a key said bolt having a n face thereof, and mea-ns upon the inner end of saith key barrel operatively engaging said notch to operate said bolt, said notch en gaging means being constructed and arranged to pre-vent said bolt from rotating relatively-to said cylinder lock.

In witness whereof, I have hereunto set' my hand on this 13th day of July, 1918. Y

HENRY G. VOIGHT.

sliding bolt, a barrel Within said lock,

otch formed in a lateral

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