US2750785A - Removable cylinder for lock - Google Patents

Description

June 19, 1956 A. H. GOLDEN 0 3 REMOVABLE CYLINDER FOR LOCK Filed Oct. 2, 1952 mnw w IVIIIIIIIIIIWIIIIIIIIIIIIIIIIIIIIIIIIIIIIII v//Wi INVENTOR REMOVABLE CYLINDER FOR LOCK Abraham H. Golden, stamford, conn assignor to The Yale & Towne Manufacturng Company, Stamford, Com., a Corporation of Connecticut Application' October 2,1952, S'erial No. ?42,705

li) Claims. (Ch 'm -224) of a sleeve extending from the lock, termed a spindle sleeve, and' is thereafter adapted to rotate the spindle sleeve' and retract the usual latchbolt. The lock cylinder is positio'ned within the knob, and" is equipped with a key plug th'at rotates relatively to'the knob'and spindle sleeve in retracting the latchbolt' when the lnob and spindle sleeveare locked against rotatio'n.

It is customary to utilize' in looks of this class a lock cylinder that is too large to pass'through thesleeve of the knob', andthe' prior artresorts`-to various devices to enableth'e cylinder to be assemlled and disassembled relatively'to the knob: In one example of' the prio'r art, the' knoh'is fbrrned of' t'wo parts, one part being removable, and-this removable part covers a slot through which an extensionof the cylinder'moves as the cylinder is inserted through the knob sleeve. In' this Construction, the lock cylinder is actually mounted in the knob' between the removable'part' and the'front'end of' the knob. Thus, removal and replacement' of the lock cylinder involves the' removal of the inner end part of the'knob` as' well as disassembly of the knob relatively tothe spindle'sleeve.

It has been proposed to insert the cylinder into the front or' bulbous end of the knob, but to date no effective means' have been developed for this' type of assembly,`. notwithstanding its'obvious advantages.

I have now co'nceived in' a lock of' the class described, a' novel Construction whereby I amable to assemble and disassemble the lock cylinder relatively to' the front end. of the knob, as has long' been desire'd. I do this through the simple utilization of the relatio'nship of the knob, the' spindlesleeve and the cylinder. Actually as the first step in assembling my novel' Construction, I merely insert the lock cylinder through a r'elatively large opening in the front end of the knob. I thereby place the cylinder in assembled position r'elatively to the knob, but If do' rio't actually mount the cylinder on the knob. I' then assemble the knob, with the cylinder in it, to the spindle sleeve, and the knob thenholds the cylinder relatively to the spindle sleeve while the spindle sleeve holds the lock cylinder relatively to the knob.

A s a very important feature of my invention, I utilize' between' the knob and the lock cylinder an arrangement wherehy the cylinder, in moving. into the knob' through the opening in its front end,rundergoes a movement transverse to the knob axis. When the knoh is assembled to the spindle sleeve, this' sleeve then prevents transverse movement of the lock cylinder, and thereby holds the cylinder in assembled relation to the knob. The knob, in: turn prevents movement of the lock cylinder away from the spindle sleeve.

' More in detail, I form upon the lock cylinder, in the preferredform of my nvention, a-laterally projecting derent' part'. This detent part prevents the cylinder from 2350385 Paztented June 19, 1956 ice moving axially through the opening in the front` end of` the knob, but does-^permit` the cylinder tomove through the openingwhen tilted away from the knob axis. By a movement of the lock cylinder from tilted position back to' axial position When inserted in the knob, the detent part is juxtaposed to an inner surface of the knob. The knob is a'ssernbled'to thespindle sleeve with the lock cylinder in this axial position, so that the cylinder enters the end of the spindle sleeve. The sleeve then prevents the cylinder from tilting and thereby holds the detent part juxtaposed to the inner surface of the knob to retain the' cylinder in the knob. Whenthe knob' is removed from the spindle sleeve, the sleeve does of course release the lock cylinder so that it can' be very easily tilted out of' the knob. Through my' novel arrangement, it is an extremely simple matter to install and remove the lock cylinder and yet this cylinder is securely retained when the knob is assembled on the spindle' sleeve. Actually, no movable parts are used that are not otherwise required for the niounting of this knob itself on the spindle sleeve.

I prefer to form the front* end of the lock cylinder with an enlarged head for covering the opening in the front of the knob; The dete'nt part of the lock cylinder is formed preferably adjacent to the edge of this enlarged head, but soniewhat spaced from it toward'the inner end of the cylinder. The'detent part is then juxtaposed to the inner surface of the knob a'djacent to the opening'while' the head covers the opening'. As a' further feature, I provide between the cylinder and the knoba spring that' prevents rattlng of the cylinder* relatively' to the knob and the spindle sleeve. I prefe'r' to place this spring` in such a way between the detent part and theknob surface as to absorb Shock applied to' this surface by the detent part due to the slamming of the door in which the lock is mounted.

I have thus outlined rather broadly the more important features of` my invention in` order that the d'etail'ed ciescription that follows maybe better understood, and in order that my contribution tothe art may. be better appreciated. There are, of" course', additional features of my invention that will be describedhereinafter andwhich will form the subject of the claims appended hereto. Those skilled' in the a'rt will appreciate that the conception on which my discl'osure is based may readily be utilized as a basis for the desig'ning of other structures for carrying out the several purposes of my invention. It is important, the'refore, that the claims be regarded as including such equivalent constructions as do not depart from the spirit and scope of my invention, in order to prevent the appropriation of my invention by those skiiled in the art;

Referrng' now to` the drawing:

Fig. I is a longitudinal' section showing the lock cylinder assembled' to the knob' and. spindle sleeve in the preferred form of my Construction; Fig. 2 illustrates the tilting movement of the cylinder as it is inserted into the knob, and Fig. 3 shows the cylinder, the sleeve, and the spring in exploded rel ation.

Referring now more particularly to the' drawing, the.

lock cylinder in the preferred form of my novel construction: is indicated by the' num'eral 1 6), and issho'wn in Fig. 1 assembled relatively to the' knob 11 and a usual form' ofspindle' sleeve 132; is. customary in'loc'ks of the particular'class, the knob'sleeveportion:fitson spindle sleeve 12 to' rota'te' integrally therewith and to be locked' therewith by the usual means provided in` the art. The lool; cylinder has lateral extensions 14, 15, and these engage: inslots in the. sleeve 12 to prevent rotation of the cylinder relatively to the spindle sleeve, so that it may be said 0 the spindle sleeve the lock cylinder and the knob rotate as one unit when assembled, as. shown in Fig. lo.

In my invention, I form in the bulbous or front end of the knob 11 a relatively large opening 16 to permt the lock cylinder with its extensions 14, to be inserted into the knob. It is reiterated that it is not new merely to insert a lock cylinder through the front of a knob, but by my extremely novel Construction I am able to insert and retain the cylinder in an efiective manner.

It will be observed in Fig. 1 that I form a detent part 17 on the lock cylinder 10, and this detent part prevents movement of the cylinder through the opening 16 when the cylinder is in an axial aligned position relatively to the knob 11. However, by tilting movement of the cylinder 10, as shown in Fig. 2, the detent part 17 moves suflciently toward the axis of the knob to permit the cylinder to pass through the opening 16.

In assembling the cylinder to the knob, it is merely necessary to insert the cylinder through the opening 16 while tilted away from the knob axis, and then to move the cylinder back into the knob axis. This places the detent part 17 in a position juxtaposed to the inner surface of the knob 11 near the edge of the opening te, as shown in Fig. 1. I then assemble the knob 11 on the spindle sleeve 12, the body portion 13 of the cylinder simultaneously entering the spindle sleeve 12 so that the sleeve holds the cylinder in axial position. Because the cylinder i@ can no longer tilt away from the knob axis, the detent part 17 is held juxtaposed to the inner surface of the knob and retains the cylinder between this surface and a part of the spindle sleeve. Actually, the cylinder 10 in my invention is mounted in the spindle sleeve 12, and the knob 11 acts merely through the detent part 17 to hold the cylinder ll@ in the sleeve. Those acquainted with the art will understand that the knob 11 is retained upon the spindle sleeve 12 by suitable means and, by way of example, I have shown for this purpose a dog 18 carried by the spindle sleeve 12 and fitting in a slot in the knob.

Upon the front end of the lock cylinder ta, I show an enlarged head 19 for covering the opening 16 in the knob 11. Preferably, the detent part 17 is formed integrally with the head 19 adjacent to its edge so as to be juxtaposed to the inner surface of the knob 11 when the head covers the opening. The detent part 17, as I have actually shown it, is formed on the lateral extension 14, this extension being integral with the head 19 and also with the body portion 13 of the cylinder.

In the preferred form of my invention, I interpose between the knob and cylinder a spring that absorbs Shock between the detent part 17 and the knob 11 due to slamning of the door in which the lock is mounted. I have shown, for this purpose, a leaf spring 20 that is approxinately C-shaped and that is slotted so as to be applied over the lateral cylinder extension 14. As shown in Fig. l, the front end 21 of the spring 20 when assembled is positioned between the detent part 17 and the inner surface of the knob 11, while the opposed end 22 is engaged beneath a shoulder on the extension 14. Thereby the spring 20 because of its C-shape presses its central part against the spindle sleeve 12 and serves also to prevent rattling of the cylinder 19, knob 11, and sleeve 12 relatively to each other.

I believe that my extremely novel concept will now be understood, and that its advantages will be fully appreciated by those skilled in the art.

I now claim:

1. In a lock of the class described, a knob having an opening in its front end, a lock cylinder inserted through said opening into said knob, a part on said lock cylinder moving to a position juxtaposed to an inner surface of said knob through a tilting movement of said cylinder as said cylinder is inserted in said knob, said surface thereafter obstructing removal of the lock cylinder from the knob except by reverse tilting movement of the cylinder, a spindle sleeve, a part of said knob assembled on said spindle sleeve with the cylinder in said knob, and said spindle sleeve holding said lock cylinder against tilting 4- movement to prevent its release from said knob when said knob is assembled on said spindle sleeve.

2. In a lock of the class described, a spindle sleeve, a knob adapted to be assembled on said spindle sleeve and having an opening in its front end, a lock cylinder within said knob and having a head covering said opening, a part on said lock cylinder juxtaposed to an inner surface of said knob to prevent outward movement of said cylinder from said knob and thereby retaining said cylinder in said knob, said part moving into and out of retaining relation to said knob through a tilting movement of said cylinder relatively to said knob, and a portion of said spindle sleeve holding said lock cylinder against tilting relatively to said knob when said knob with said cylinder therein is assembled on said spindle sleeve.

3. In a lock of the class described, a spindle sleeve, a knob adapted to be assembled axially on said spindle sleeve and having an opening in its front end, a lock cylinder also adapted to be assembled axially on said sleeve, the front of said lock cylinder covering said opening while the remainder of the cylinder is within said knob, said cylinder being inserted into said knob by a tilting movement of said cylinder out of axial position, a detent part on said lock cylinder moving to a position juxtaposed to on inner surface of said knob as said cylinder moves back to said axial position within said knob, said inner surface of the knob thereafter obstructing removal of the lock cylinder from the knob except by reverse tilting of the cylinder, said knob and cylinder then moving axially into assembled position on said spindle sleeve to hold said lock cylinder assembled to said sleeve.

4. In a lock of the class described, a spindle sleeve, a knob adapted to be assembled axially on said spindle sleeve and having an opening in its front end, a lock cylinder adapted to be inserted through said opening into an axial position in said knob and entering said spindle sleeve when said knob is assembled on said sleeve, and a part on said lock cylinder admitted to said knob by a movement of said cylinder out of said axial position as it is inserted in said knob and moving to a position juxtaposed to an inner surface of said knob as said cylinder moves to said axial position Whereby said knob when assembled on said spindle sleeve holds said lock cylinder assembled to said sleeve.

5. In a lock of the class described, a knob having a sleeve portion on one end and an opening in its opposed bulbous end, a lock cylinder inserted through said opening into a position aligned With said sleeve portion in said knob, a part on said lock cylinder moving to a position juxtaposed to an inner surface of said knob through a tilting movement of said cylinder as said cylinder is inserted in said knob, said surface thereafter obstructing removal of the lock cylinder from the knob except by reverse titling movement of the cylinder, a spindle sleeve upon which said sleeve portion is assembled While said cylinder is aligned with said sleeve portion in said knob, and said spindle sleeve then holding 'said lock cylinder against tilting movement to prevent its release from said knob. v

6. In a lock of the class described, a spindle sleeve, a knob adapted to be assembled axially on said spindle sleeve and having an opening in its front end, a lock cylinder in said knob, a detent part on said lock cylinder juxtaposed to an inner surface of said knob to retain said cylinder endwise between said knob and a portion of said spindle sleeve, said detent part moving into and out of retaining relation to said knob through a transvers'e movement of said cylinder relatively to the axis of said knob whereby to allow removal of said cylinder from said knob through said opening when said knob is removed from said spindle sleeve, and said spindle sleeve holding said lock cylinder against transverse movement relatively to the axis of said knob when said knob is assembled o said spindle sleeve. i

7. In a lock of the class described, a rotatable spindle sleeve, a lock cylnder assembled endwise to said spindle sleeve, coacting surfaces preventing rotation and also transverse movement of said cylnder relatively to said spindle sleeve, a knob mounted on said spindle sleeve to rotate therewith, a detent part on said cylnder juxtaposed to a surface of said knob to hold said cylnder against endwise movement away from said sleeve, an opening in said knob allowing said detent part to move away from said surface of said knob through a transverse movement of said cylnder when said knob is disassembled relatively to said sleeve, and said coacting surfaces by preventing transverse movement of said cylnder holding said cylnder assembled to said knob and spindle sleeve When said knob is assembled on said sleeve.

8. In a lock of the class described, a spindle sleeve, a knob assembled axially on said spindle sleeve and having an opening in its front end, a lock cylnder within said knob, a part on said lock cylnder juxtaposed to an inner surface of said knob adjacent to said opening to prevent outward movement of said cylnder through said opening and thereby retaining said cylnder in said knob, a spring acting between said cylnder and said knob to absorb shock against said inner surface due to slamming of the door in which the lock is mounted, said part moving out of retaining relation to said knob through a transverse movement of said cylnder relatively to the axis of said knob, and a portion of said spindle sleeve holding said lock cylnder against transverse movement relatively to the knob to the knob axis When said knob with said cylnder therein is assembled on said spindle sleeve.

9. In a lock of the class described, a spindle sleeve, a knob adapted to be assembled axially on said spindle sleeve and having an opening in its front end, a lock cylnder also adapted to be assembled axally on said sleeve, said cylinder being inserted into said knob with a transverse movement of said cylnder relatively to the axis of said knob, a detent part moving to a position juxtaposed to an inner surface of said knob as said cylnder moves to axial position within said knob, said knob then moving axially into assembled position on said spindle sleeve to hold said lock cylnder assembled to said sleeve, and a spring acting between said cylnder, said knob, and said sleeve.

10. In a lock of the class described, a spindle sleeve, a knob having a sleeve portion adapted to be assembled axially on said spindle sleeve and also having an opening in its front bulbous end, a lock cylnder within said knob adapted to be inserted axially into said spindle sleeve, a head on said lock cylnder covering said opening while the remainder of the cylnder is within said knob, said cylnder being inserted into said knob through said opening with a tilting movement of said cylnder out of aligned position relatively to said sleeve portion of said knob, a detent part on said cylnder moving to a position juxtaposed to an inner surface of said knob as said cylnder moves back to a position aligned with said sleeve portion of said knob within said knob, said cylnder then moving axially into assembled position in said spindle sleeve as said knob is assembled to said sleeve to hold said lock cylnder assembled to said sleeve.

References Cited in the file of this patent UNITED STATES PATENTS 949,967 Arens Feb. 22, 1910 1,339,721 Shaw May 11, 1920 2,175,791 Brauning Oct. 10, 1939

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