US2542117A

US2542117A - Lock knob and reversible spindle attaching means

Info

Publication number: US2542117A
Authority: US
Inventors: Jr Robert C Cerf
Original assignee: HOLLYMADE HARDWARE Manufacturing Co
Current assignee: HOLLYMADE HARDWARE Manufacturing Co
Priority date: 1949-02-14
Filing date: 1949-02-14
Publication date: 1951-02-20
Anticipated expiration: 1968-02-20

Description

R. c. CERF, JR

Feb. 20, 1951 LOCK KNOB AND REVERSIBLE SPINDLE ATTACHING MEANS Filed Feb. 14, 1949 FIG.

FIG. 2.

FIG. 3

It .J

INVENTOR ROBERT C. CERF JR.

ATTORNEY Patented Feb. 20, 1951 LOCK KNOB AND REVERSIBLE SPINDLE ATTACHING MEANS Robert .C. Cerf, Jr.,.Los Angeles, Calif., assignor I to Hollyrnade Hardware Manufacturing Company, Los Angeles,- Calif., a corporation of California Application February 14, 1949, Serial No. 76,314

'5 Claims.

Thisinvention relates to 'adoor knob and spindleassembly andin particular to an assembly ofa fabricated door knob,-a key-operated lock and a reversible tubular spindle.

One object of the invention is to provide a simple assembly fora fabricated'door knob/and spindle adapted to enclose-a key-actuatedraxially disposed lock mechanism. Another object is to provide a door knob assembly, including a keyactuated lock mechanism and a spindle which, after installation in a door set, cannot be disassembled until the assem'bly'is releasedand disengaged from an associated latching mechanism accessible only from-the opposite side of the'door. Still another objectis-to provide meansfor readily changing the radialposition of the spindle so that the key slot may be diametrically reversed.

These and other objects of my invention are attainedby the illustrative structure disclosedin the following description and the accompanying drawings in which:

Figure 1 is a longitudinal cross-sectional view partly in elevation showing the door knob, lock andspindle assembly'of my invention;

' Figure 2-is-'a cross-sectional view takenonthe line 2-2 of Figure l Figure-3 is a cross-sectional view-taken on the line 3-3 of Figure 1 with the sleeve 'l omitted andcertain parts shownin full lines;

Figure 4 is a longitudinal cross-sectional view similar to Figure 1 but with the sleeve "shifted laterallyto the unfastened position;

Figure 5 is a cross-sectional view taken on the line 5-5 of. Figure .4;

Figure 6 is a cross-sectional View taken on the line 6-.6 of Figure 4 with certain parts shown in vfull lines;

Figure 7 is a top plan'view with parts broken away and partly .in section, showing the knob core;

Figure 8 is a perspective View of the knob core;

and

tioned axially in the knob, with a tubular spindle extending from the knob body and with a shell closure member slidably mounted on the spindle.

vReferring to the drawings, the knob core I I which is preferably made as a rigid die-cast member consists of a rim portion I2 Which,as shown, fol- .lows at least in part the inside contour of the outer shell of the knob and is provided with a central hub I3 which is attached to the rim portion by the disk member I4 which is offset inwardly from the rearward opening 33 of the shell 20 at the contact edge I5 with said shell. A rectangular opening I6 extending from the hub toward the periphery is provided in the disk I4, this opening continuing into the hub I3 and forming the hub slot I9, this opening and slot being arranged to admit and position the pin tumbler chamber of the key-actuated lock mechanism as will be described below. The hub 'I3is provided with a hub extension I8 on the rearward end thereof, said hub extension I8 being only half cylindrical and being disposed diametrically opposite the rectangular opening It. (In this description, the rearward positions are those adjacent ornearest the door on which the knob is intended to be installed, and the forward positions are those adjacent the outer or keyhole face of the knob.) A detent boss 22 is provided on the outer surface of the hub extension I8, being adapted to engage one or the other corresponding slots or

recesses

23 or 24 provided in the spindle 26'. Two parallel slots .21 and 23 disposed at opposite sides of the hub extension I3 are provided in the disk member M, these .being arranged to engage fastening tabs 29and-30 on the spindle 26 as will be described. I he slots 27 and 28 are arranged so that the portions 21A and 28A above the diametrical dividing plane defining the edges of the halfcylindrical extension I8 (as represented in Figure 8) arelonger than the remaining portions 273 and 28B respectively below said plane.

The outer covering shell 20 consists generally of a spun sheet metal spheroidal knob which covers and isin contact wit-h the rim portion of the knob core I I. Thisshell is provided with an inturned margin 2| adjacent the forward end of the hub I3, and has a coaxial rearward opening 33, larger than said hub making contact with the knob core at the contact edge I5.

The tubular spindle 26 consists of a metal tube large enough to fit over the hub extension I.8, provided at its end with fastening tabs 29 and 3-0 by which the spindle is rigidly fastened'to the face of the disk member I4, around said half cylindrical hubextension I8. The

tabs

29 and 30 are undercut on both sides to form upper tongues 3| and lower tongues 32, the tabs including tongues-adapted to fit into theslots 2-1 and .28 in the disk I4, and one pair of tongues, either M or 32 being adapted by slidingparallelto the slots to engage the edge of the disk It beyond the short ends 213 .and 28B of the slots 21 and .28. The attaching end of the spindle is further provided with notches 34 disposed on diametrically opposite sides intermediate the

tabs

29 and 30, which notches are adapted to engage and hold the spindle in fixed relation to the pin tumbler chamber 35 of the key-operated lock mechanism. The opposite end of the spindle 26 is provided with a retractor lifter 31 and also with a circumferential retainer slot 36 which is adapted to turnably hold the spindle to a latch mechanism housing (not shown) to prevent removal of the knob and spindle assembly.

The key-operated locking mechanism 39 is preferably of the kind known as a pi tumbler and cylinder lock consisting of a cylindrical casing 40 enclosing a key cylinder 4| and having a pin tumbler chamber or extension 35 extending laterally from the outer wall of the cylindrical casing 46. The key plug 4| which is adapted to be turned by the key K is retained in the cylindrical casing 46 by the turning bar connector 42 which is attached to the end of the cylinder 4| by screws 42A, the turningbar (not shown) being turned by engagement in the :bar slot 43.

The shell closure member 44 consists of a conical disk 45 having a cylindrical in-turned rim 46 which is adapted to fit closely within the edge of the rearward opening 33 of the outer covering shell at the recessed contact edge l5 in the knob core, being held in position by frictional engagement. The shell closure member 44 is provided with a concentric sleeve 4"! which is adapted to slide on the spindle 26.

The parts of the assembly are put together in the following manner. A tubular blank for the outer covering shell 26 is spun over the rim portion l2 of the knob core II, the in-t'urned margin 2| being formed on the forward side, this margin being turned inside the hub l3. The rearward opening 33 in the shell terminates in the contact edge l5 which adjoins the corresponding edge of the knob core. The disk I4 is disposed a short distance inside the rearward opening of the shell 20. The knob core H and the outer shell 26 are spun tightly together to form a substantially unitary body. The pin tumbler and cylinder lock mechanism 39 is then inserted through the rearward opening with the end of the pin tumbler chamber 35 abutting the inside of the outer shell, and the key end of the cylindrical casing 40 abutting the in-turned margin 2| of the shell 20. The spindle 26 is then arranged over the hub extension l8, the

fas tening tabs

29 and 36 being inserted in the slots 21 and 28, as shown in Figures 4, 5, and 6. The

spindle 26 is then shifted laterally parallel to the slots 2! and 28, whereby the lower tongues 32 (Figure 9) engage the inside wall of the disk '|4 at the ends of the slots 21B and 28B. By the same lateral movement, the detent boss 22 engages one or the other

detent slot

23 or 24 in the spindle 26. The spindle is thus secured to the disk l4 so that it cannot be rocked. The shell closure member 40 is then slipped over the free end of the tubular spindle 26 with its cylindrical rim frictionally engaging the edge of the rearward opening of the shell 20 at the contact edge I 5 of the knob core II, the sleeve 41' fitting around the hub extension l8 and the enclosed spindle to keep them in aligned position. The provision of the two pairs of tongues 3| and 32 and the corresponding diametrically opposed

slots

23 and 24, together with the opposite notches 34 for engaging the pin tumbler chamber 35, permits the positioning of the key slot so that the pin tumbler chamber will be over the key cylinder 4|.

The advantages of my knob assembly will be apparent. The parts are readily fabricated by standard metal working operations, and, when assembled, the knob cannot be removed from the outside until released through removal of a retainer in the retainer slot 36 in the spindle 26. The rosette E shown in broken lines in Figure l effectively prevents tampering with the shell closure member after the knob is fully assembled and mounted on the door. The position of the key slot is readily changed during installation of the lock set, to correspond to the hand of the door.

I claim:

1. In a door knob and spindle assembly, a shell covered knob core having a rim portion adapted to support said outer covering shell, said core having an internal coaxial hub adapted to hold a cylindrical type locking mechanism, and a disk portion connecting said hub to said rim portion; said disk portion having a coaxial half cylindrical hub extension protruding from the face of said disk portion and also having tab-engaging slots therethrough on both sides of said hub extension; and a tubular spindle having fastening tabs adapted to be inserted in said slots, said tabs being provided with tongues adapted to engage said disk portion at the ends of said slots when said spindle is shifted laterally on said half cylindrical hub extension to axially align said spindle and said hub.

2. The assembly of claim 1, and detent means on said half cylindrical hub extension engaged by a detent slot in said spindle, when said spindle is aligned with said hub.

3. A door knob, lock, and spindle assembly comprising a knob core having a rim portion adapted to support an outer covering shell, and having a coaxial hub extending from the front to the back of said knob and adapted to hold the cylindrical portion of a pin tumbler and cylinder locking mechanism, and a disk portion having ofi-set tab-engaging slots connecting said hub to said rim portion, said hub and said disk portion having sectoral openings adapted to receive the pin chamber of said locking mechanism; an outer covering shell for said core, said shell having an in-turned margin around a forward coaxial opening adapted to communicate with said hub and with a coaxial rearward opening larger than said hub; a tubular spindle extending from said disk portion; T-shaped tab means adapted to enter said tab-engaging slots in said disk portion to attach said spindle over the portion of said hub extending rearwardly through said disk portion; a pin tumbler and cylinder lock mechanism having a cylindrical casing disposed in said hub and having a pin tumbler chamber extending from said casing in said sectoral opening, said mechanism being held longitudinally between said shell and the attachment end of said tubular spindle; and a removable closure member for the rearward opening of said shell, said closure member having a hub adapted to slide over said spindle, and having a rim adapted to fit into the rearward opening of said shell.

4. A door knob, lock, and spindle assembly comprising a knob core having a rim portion adapted to support an outer covering shell, said core having a coaxial hub extending from the front to the back of said knob and adapted to hold the cylindrical portionof a pin tumbler and cylinder locking mechanism, and a disk portion connecting said hub to said rim portion, said hub and said disk portion having sectoral openings adapted to receive the pin chamber of said locking mechanism; an outer covering shell for said body, said shell having an in-turned margin around a forward coaxial opening adapted to communicate with said hub and with a coaxial rearward opening larger than said hub; a half-cylindrical hub extension disposed on the rearward side of said disk portion; said disk portion being provided with slots on both sides of said extension; a tubular spindle having tabs with tongues adapted to enter said slots, and adapted when said tabs are laterally shifted in said slots to engage the disk portion at the ends of said slots whereby to attach the said spindle to said disk portion of said knob core; a pin tumbler and cylinder lock mechanism having a cylindrical casing disposed in said hub and having a pin tumbler chamber extending from said casing in said sectoral opening, said mechanism being held longitudinally between said shell and the attachment end of said tubula spindle; and a removable closure member for the rearward opening of said shell, said closure member having a hub adapted to slide over said spindle, and having a rim adapted to fit into the rearward opening of said shell.

5. In a door knob and spindle assembly, a knob core having a rim portion adapted to support an outer covering shell, said core having a coaxial hub adapted to hold a cylinder type locking REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 768,833 Voight Aug. 30, 1904 2,294,213 Schlage Aug. 25, 1942 2,430,727 Morgen Nov. 11, 1947