US2677953A - Demountable knob and cylinder lock - Google Patents

Description

May 11, 1954 l.. H. FISLER ETAL 2,677,953

DEMOUNTABLE KNOB AND CYLINDER LOCK Filed July 17, 1952 2 Sheets-Sheet l May 1l,` 1954 H. FlsLER ET AL DEMOUNTABLE KNOB AND CYLINDER LOCK Filed July 17, 1952 2 Sheets-Sheet 2 INVENTOR. 5w/ww /v Fis/,EP

By WML/Aw M SCHH/Vrin? HTTOF/VEY Patented May 11, 1954 2,67 7,953 DEMQUNTABLE KNOB AND CYLINDER LOCK Leland H. Fisler and W Britain, Conn., assignors to The American Hardware Corporation Application `luly 17, 1952, Serial No. 299,372

(Cl. 'Y0-224) 9 Claims.

This invention relates to a cle-mountable knob and vcylinder lock and more particularly to the locks which is adapted to have a cylinder lock unit detachably mounted therein.

An object of this invention is to provide a knob having improved means for retaining a cylinder lock unit in position within the knob.

A further object of the invention is to provide means which may be pre-constructed to properly retain a de-mountable cylinder lock in position cies caused by the accumulation of manufacturm ing tolerances which are required for economical production.

A further object of this invention is the provision of novel means for retaining a cle-mountable lock unit in position within the knob and preventing unauthorized removal of the knob from the cylindrical lock mechanism to which the said knob is connected.

Further objects and advantages of this invention will be more clearly understood from the following drawings in which:

Fig. 1 is an exploded isometric view illustrating the construction of the knob assembly embodying our invention.

Fig. 2 is a plan View of the knob partly in central horizontal section.

Fig. 3 is a side view of the said knob partly in central vertical section.

Fig. 4 is a sectional end View of said knob on line ll-ll of Fig. 3.

Fig. 5 is a front end view of the spindle.

Fig. 6 is a sectional end View of the knob shank on line 6-B of Fig. 3.

Fig. 7 is a plan view in central horizontal section showing our improved de-mountable knob and cylinder lock assembled in-a cylindrical lock mechanism.

Fig. 8 is a sectional end View on line 8-8 of Fig. 10.

Fig. 9 is a similar view, but showing a portion of the mechanism in position to permit detachment oi the knob assembly from the spindle.

Fig. 10 is a plan view, partly in section, illusH trating a modined form of our invention Fig. 1l is an end view thereof.

In the embodiment of our` invention which is illustrated in the drawings, the numeral 5 denotes a tubular shank which has an annular flange forming an end wall G that is perpendicular to the axis of the said shank and is formed with a curved annular liange 1 to receive an outer shell 8 to thereby provide a knob on the said shank.

The shank 5 has a slot 9 in the Wall thereof which extends longitudinally for the full length of the shank and communicates with an opening It?, in the Wall which is wider than the slot a and forms a notch in the side of said slot which provides a shoulder il adjacent to and facing the opening i0.

The shell a has an axial opening therein which is in axial alignment with the shank 5.

The shank is adapted to receive a tubular spindle i2 which, in the form illustrated in the drawings, is provided at the end thereof with a on the spindle by a suitable retainer M, as fully described in the co-pending application of Leland H. Fisler et al., Serial No. 269,168, led

opposed retaining openings i5-l5 in the wall of the shank. The said spindle l2 is provided with elongated opposed notches :6-56 in the end thereof, either one of which is adapted to receive an inwardly extending projection l1 on the shank to slidably and non-rotatably secure the spindle to the shank.

The notches it-E 6 are also adapted to reoeive the radial projection I8, which forms the pin-tumbler chamber, on the case I9 of a conventional cylinder lock which has the usual key plug 29 that is rotatable therein by means of a suitable key. The said key plug is provided, at the outer end thereof, with a head portion 2| which extends into the axial opening in the knob shell 3 and positions the said cylinder lock in the knob. lI'he opposite end of the key plug is pending application of Leland H. Fisler, Serial No. 299,308, filed July 19, 1952, and entitled Door Lock.

l-Ieretofore, it has been common practice to position. the lock case between the inner marginal surface oi' the axial opening in the knob shell 8 and the end 23 oi one of the notches l-IG and, as Well known to those skilled in the art, it has been very dii-heult to maintain a uniform distance between the said inner surface and the end of the notch due to manufacturing tolerances which commonly occur in producing such parts in large quantities. Therefore, in order to assure a nt for the lock case, the notches IG-IG have been commonly made longer than necessary. This construction permitted lengthwise movement of the lock case within the knob and was found very objectionable since even a slight longitudinal movement is extremely noticeable when the lock is operated. t was also found that at times, the head 2i orthe key plug moved out of the opening in the knob shell and into the knob thereby rendering the lock inoperative since the key could not be properly inserted into the plug.

Our herein described invention eliminates the objectionable lengthwise movement of the lock case, when it is assembled in the knob, by the provision of the shoulder Ii which engages the end of the pin-tumbler chamber I8 of the cylinder lock to retain the lock in position, and greatly facilitates the maintenance of a uniform distance between the said inner marginal surface of the axial opening in the knob shell and the said shoulder II, with the result that the cylinder lock is securely retained in position and against objectionable longitudinal movement.

In the modified form shown in Fig. 10, there is provided a bendable tab 25 which projects into the slot S-o in back of the chamber I8. This tab may be bent into its operative position relatively to the chamber after the lock has been inserted into the knob.

As shown in Figs. '7 to 1l, the cylinder lock may be connected to a retractor operating member, such as an auxiliary rollback 2t which is fully described in said co-pending application of Leland H. Fisler, Serial No. 299,808, led July i9, 1952, and which has a head portion 21, with a hole therein by means of which the said auxiliary rollback is secured to the hook on the projection 22 on the key plug 26, a shank portion 28, a front plate portion 29 and a rollback portion 3il. The said plate portion 29 is formed so that it extends perpendicularly from one side of the shank portion and is adapted to engage the retainer I4 when in normal position as will be more fully hereinafter described.

As shown in Fig. 7, and described in the said co-pending application, Serial No. 259,168, the spindle I2 is rotatably which projects from an end plate 32 on the case 33 of a basic cylindrical lock unit. The said spindle is secured to the said case by means of a thrust washer 3d. which abuts the inner surface of the end plate and prevents the spindle from being detached from the case as fully shown and described in the co-pending application of Frank J. McConnell, Serial No. 275,618, iiled February 8, 1952.

The retainer I4 is accessible through a notch in the said bearing sleeve SI which is covered by the outer rose 35 that is threaded to the bearing sleeve and has prongs 36 that project into the surface of the door to prevent detachment of the said rose when the cylindrical lock is assembled in the door.

The parts above described are assembled in the following manner:

The cylinder lock I9 is first inserted into the end of the shank 5 with the chamber I8 in the slot 9. The lock is then moved longitudinally into said shank until the head 2i of the key plug projects through the axial opening in the shell 8. The lock case is then rotated slightly to move the end of the chamber I8 into engagement with mounted in a sleeve 3| the shoulder II and into the position shown in Fig. 2 of the drawings. A cap 24 is then pla-ced over the shank and against the back oi the knob "f, as shown, to cover the cylinder lock and also to reinforce the said shank.

The auxiliary rollback member 26 is then inserted into the shank 5 and secured to the hooked projection 22 on the cylinder lock plug. The key plug 29 is then rotated 130 degrees with the proper key to place the plate portion 29 of the auxiliary rollback in the position shown in Fig. 9 so that the said plate portion will clear the retainer I4 as the rollback is moved into the spindle. The shank is then passed over the spindle I2 with the chamber I8 in position to enter one of the notches IG-IG therein. The opposite one of said notches will receive the projection I1. The knob assembly is then forced inwardly on the spindle until the end of the knob shank is adjacent the retainer ld. The key plug is then rotated back to normal position to properly locate the auxiliary rollback with. respect to the spindle I2 and the retainer is then depressed and the knob assembly moved inwardly on the spindle until said retainer is in register with and engages the cooperating opening I5 in the shank thereby locks the shank and the knob assembly to the spindle as illustrated in Fig. 7 of the drawing.

When the shank is thus locked to the spindle, rotation of the shank relatively to the spindle is prevented by means of the projection I1 which extends into the respective notch I6. The lock case is held against rotation relatively to the spindle by the chamber I8 which is positioned in the opposite slot I6 so that said chamber IB will be retained in engagement with the shoulder Il.

When the modified form shown in Fig. 10 is used, the projection I1 may be omitted since the shank will be locked to the spindle by means of the chamber I8 which nts within the notch I6 in the spindle and the slot B-a in the shank. It will be understood that when the cylindrical lock unit incorporating our knob and cylinder lock is installed in a door, the rose 35 covers the notch adjacent to the retainer I4 so that said retainer cannot be operated until the rose 35 is first removed. This cannot be done, on account of the prongs 36, until the rose on the inner side of the door, not shown, is detached and the entire unit moved outwardly to disengage the said prongs 36 from the door.

Should an unauthorized person succeed in forcing the rose 35, so as to gain access to the retainer i4 in an attempt to detach the knob assembly from the spindle so as to gain access to the retractor in the case 33, he may disengage the retainer from the knob shank, but he may only pull the knob assembly outwardly on the spindle until the plate portion 29 on the rollback, which is normally in the position shown in Fig. 8, engages said retainer I4. Further outward movement of the knob assembly will then be prevented since the auxiliary rollback will be locked to the spindle by the said retainer, the cylinder lock unit I9 is locked to said rollback by the hook on the boss 22, and t e shank of the knob is locked to the cylinder lock unit by means of the shoulder Il, or the tab 25, and the entire assembly is locked to the case 33 by means of the thrust washer. It will, therefore, be understood that, in order to detach the 1knob assembly' from the spindle I2, it is necessary to use the proper key for the cylinder lock so that the key cierne-s plug land auxiliary rollbackfcan ibe rotated :to t e positionrshown Eig. V9 to 1 thereby Apermit the sai'dsrollback to cleartheretainer Ilias the knobassembly isv detached from the spindle.

It can be clearly'understood from .thefabove description that kour present invention provides a novel construction for a cle-mountable knob and cylinder lock which securely retains the lock against endwise and rotatable movement relatively to the knob and which is highly economical to manufacture on a quantity production basis since close tolerances, which have been 'heretofore difficult to maintain, are now rendered unnecessary.

'-By the provision of the twoopenings I5-I5 and the two notches I6-IB, the shank I2 may be connected to the spindle in two different positions 180 degrees apart so that the knob may be used on either right or left hand doors with the chamber I8 of the lock always at the top of the case, and without disturbing the position of the rollback portion I3 relatively to the retractor.

We claim:

1. A de-mountable knob and lock construction comprising a knob having a tubular shank extending therefrom and an opening therein coaxial with said shank, the said shank having a longitudinal slot in the Wall thereof and an abutment in the side of said slot for retaining a lock in position in said axial opening.

2. A de-mountable knob and lock construction comprising a knob having a tubular shank extending therefrom and an opening coaxial with said shank, the said shank having a longitudinal slot in the wall thereof, and a tab at one side of said slot bendable into position to retain a lock against movement in said knob.

3. A de-mountable knob and cylinder lock ccnstruction comprising a knob having an axial opening therein and an end wall with a tubular shank extending perpendicularly therefrom, the said wall having an opening therein, the said shank having a longitudinal slot communicating with said opening in the wall; one side of said Vslot having an abutment forming a retaining shoulder which faces a portion of said opening for retaining a lock against movement relatively to the knob.

4. A de-mountable knob and cylinder lock construction including a knob having a tubular shank with a perpendicularly extending wall portion and a knob portion, the said shank having a longitudinal slot in the wall thereof communicating with an opening in said wall portion, the said knob portion axial alignment with the shank, a retaining shoulder in a side of the said slot and located adjacent to the wall portion, the said opening in the knob portion being adapted to receive a portion of a cylinder lock and the said retaining shoulder being adapted to engage a projection on the lock for retaining the lock against longitudinal movement relatively to the knob, a spindle slidable within said shank, means on said spindle engageable with the lock for retaining it in engagement with the said retaining shoulder and means for preventing rotation of the spindle relatively to the shank.

5. A de-mountable knob and cylinder lock comprising a knob having a tubular shank with a perpendicular wall portion extending therefrom and a knob portion secured to said wall portion, the

lsaid tubular shank having a slot in the wall thereof extending the full length of the shank and communicating with an opening in the said having an axial opening in 5 y jection on the lock wall Vvportion, the said slotbeing narrower-than said opening and having one side thereof terminating in a retaining shoulder facing a portion of said opening, an axial opening in the `said knob portion in alignment with the axis of :the shank, the said axial opening being adaptedto receive aportion of a cylinder lock and the said retaining shouldervbeing adapted toabut a projection on said lock and retain the lock in position against endwise movement relatively to the knob, a `spindle slidable within said shank, a notch in said spindle'for receiving the projection on the lock to prevent disengagement of said projection from the retaining shoulder, and means securing the lspindle against rotation relatively to the shank.

6. A de-mountable knob and cylinder lock construction comprising a shank portion having a radial Wall extending perpendicularly from an end thereof and a knob portion mounted on said wall, the said shank having a longitudinal slot therein extending throughout the length thereof and communicating with an opening in the said wall, the said opening being wider than the slot providing a notch in the shank on one side of said slot and an abutment shoulder facing the said opening, the said knob portion having an opening therein in axial alignment with the shank, a cylinder lock having a portion fitting within said axial opening and a projection theron fitting within the opening in the Wall and within the notch in the side of the slot, a spindle slidable in the shank and having opposed notches in the end thereof, one of said notches receiving the proto prevent the rotation of the said lock, a projection on the shank extending inwardly into the other notch in the spindle for preventing rotation of the spindle relatively to the shank, and a retainer in the spindle engageable with an abutment on the shank for retaining the spindle against longitudinal movement relatively to the shank.

7. A de-mountable knob and cylinder lock as set forth in claim 4, including an annular cap surrounding the shank portion and fitting against the back of the knob to cover the cylinder lock therein and reinforce the said shank portion.

8. In a cylindrical lock including a casing having a sleeve extending therefrom, a spindle rotatable insaid sleeve and having a notch in the wall thereof; said spindle being secured against removal from the sleeve and a retainer in said spindle, the combination of a de-mountable knob and cylinder lock assembly including a knob having a tubular shank projecting therefrom, a slot extending longitudinally in said shank, an abutengagement from said abutment; the said shank having an opening therein for the reception of said retainer to release-bly secure the said assembly to the spindle, a retractor operating member secured to the lock, and a projection on said operable to clear the retainer in said spindle when the Said member is rotated to a predetermined position by key operation of the lock.

9. In a cylindrical lock unit, the combination of a case, a sleeve extending from said case, a spindle rotatable in said sleeve, means for retaining said spindle Within the sleeve, a retainer in said spindle accessible through an adjacent opening in the sleeve, a rose threaded to said sleeve and covering said opening therein. the said spindle having a notch adapted to receive a portion of a cylinder lock, a knob having an axial opening therein, a shank on said knob having a slot extending longitudinally in the wall thereof and adapted to receive the said portion of the cylinder lock, an abutment on the shank engageable with said portion of the cylinder lock for preventing detachment from the knob, an auxiliary rollback member secured to said lock, a plate portion on said auxiliary rollback extending towards one side thereof, the said plate por- 15 tion being engageable with the retainer inthe spindle to prevent unauthorized detachment of the knob assembly and being movable by key References Cited in the file of this patent UNITED STATES PATENTS Number Name Date schlage Apr. l2, 1932 schlage May 26, 1936 Schlage Nov. 10, 1942 Cerf Apr. 3, 1951

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