US2318947A

US2318947A - Door lock

Info

Publication number: US2318947A
Authority: US
Inventors: Eugene V Kidder
Original assignee: HARRY E FENDRING
Current assignee: HARRY E FENDRING
Priority date: 1940-08-23
Filing date: 1940-08-23
Publication date: 1943-05-11
Anticipated expiration: 1960-05-11

Description

May 11,1943.

E. v. KIDDER DOOR LOCK 2 Sheets-Sheet 2 wirf @am f Filed Aug. 23, 1940 ICF-(1,

f O t0):

N I Bnpentor 'Ez/@5v5 K /f/Dafe Patented May 1l, 1943 Doon Loox Eugene V. Kidder, Los Angeles, Calif., assignor to Harry E. Fendring, Los Angeles, Calif.

Application August 23, 1940, Serial No. 353,798

8' Claims.

My invention relates to a lock particularly adapted for doors. f

One of the principal objects of this invention is to provide a lock of this class which is particularly simple and economical of construction, one which may be readily and economically installed, and one which is durable and which will not readily deteriorate or get out of order.

An important object also of this invention is the provision of a novel and simple latch bolt mechanism and knobs which may be readily installed and effectively operated even though the several elements are not properly aligned, or even if the several parts are considerably out of line.

Another important object of this invention is to provide a novel operative connection between the inner end of the bolt operating mechanism and the knobs, whereby the latter may be easily connected to the former by depressing the bolt and inserting the retracting means of the knob.

A further important object of this invention is to provide a novel and simple means for locking or blocking the bolt against withdrawal or retraction. f

' A still further important object of this inven- "tion is to provide a novel arrangement for unlocking from one side of the door the unlocking or locking means at the other side.

Still another important object of this invention is to provide novel and simple means for retaining the knobs in position on the door as well as centralizing or neutralizing the knobs after the same are operated. v

It is also an object of this invention to provide novel and simple means for covering otherwise exposed bolt or screw heads.

An important object also of this invention is to provide a lock of this class which may be used as an outside door lock and in which features thereof may be also used as an inside or room door latch or lock. Y

'With these and other objects in view, as will appear hereinafter, I have devised a door lock having certain novel features lof construction, as will be hereinafterdescribed in detail and particularly set forth inthe appended claims, reference being had to the accompanying drawings and to the characters of reference thereon, which form a part of this application, in which:

Fig. 1 is a transverse section of the free edge of a door showing my lock, in a preferred form of construction. installed therein` portions being broken .away and in section to facilitate the illustration, the sectional portion being taken substantially at I I of Fig. 2;

' Fig. 2 is a fragmentary sectional view thereof, taken through 2 2 of Fig. 1;

` Fig. 3 is a fragmentary edge view of the door showing the latch-bolt and housing;

Fig; 4 is an elevational view of the inner end plates.

the opposite sides of the door I, the axes beingA of the bolt means, showing its relationto the adjacent ends of the hubs of the knobs, taken at 4 4 of Fig. 1;

Fig. 5 is a fragmentary sectional elevational view thereof, taken through 5 5 of Figrl, showing essentially the bolt mechanism; and, y

Figs. 6, '7, 8, 9, and 10 are transverse sectional views taken respectively through 6 6, 1 1, 8 3, 9 9, and IIJ-IIJ of Fig. 2.

The latch bolt mechanism consistsessentially of a bolt housing I, a bolt 2, a boltretracting member 3, and a compression spring 4.

The bolt housing I is located in a hole D1 provided in the outer edge of the door D.A Theouter end of the housing has a plate portion l which iits into a mortised recess Dla at the-free Aedge of the door. The edges of the plate portion la. are preferably bevelled inwardly to insure a tight iit in the recess. The `plate portion has inwardly extending prongs Ib` at its inner side which may be driven into the door for securing the housing I into place.

v The bolt is reciprocally mounted in the hous-` ing and isnormally forced outward bythe compression spring 4. The bolt is preferably made hollow and is provided witha transverse pin .2- near its inner end. The forward or outer end of the bolt retracting or operating member 3 is mounted on the pin 2 in such a manner that the member 3 may be moved laterally with respect to the bolt and the housing, as indicated by dotted lines. The inner end of the housing has a transverse slot IF, through whichvthe bolt operating member 3v extends and which permits the lateral movement of the member 3.

The portion of the boltoperating member 3 which extends inwardly fromv the housing I is provided with box-like structures 3a at the oppo. site sides of its inner end. The, extreme Ainner end of the member 3 has laterally extending anges` 3b which are engaged by suitable means for drawing the member inwardly, as willfbe In the drawings, I Vhave shown-two knobs Il.

and I2 having hubs Ila and |21. These knobs are axially aligned and are separately rotatably mounted in annular flanges or bearings I3@ and I 4a at the central portions of escutcheon plates or discs I3 and I4. These annular flanges extend.

into the opposite ends of a transverse bore D2 of the door, and thereby locate the escutcheon. 'Ihese escutcheon plates are secured`v at at right angles to the latch bolt mechanism. These plates are secured together by bolt and nut means, as shown. The nuts consist of tubular..

members I5 which are secured and extend inwardly from the escutcheon plates I4, which are preferably located at the outside of the door. The

bolts or screws I6 of the bolt and nut meansV extend through the other escutcheon plates and into the nuts I5. The bolts and nuts extend through holes D3 in the door, which holes are spaced from the bore D2.

The tubular nuts I5 prevent the escutcheon within the bearings of the escutcheon plates by "f set screws 2| which are provided in the bosses or annular anges of the escutcheon plates and which extend with their inner ends into circumferential grooves IIb and |21'. The knobs are centered or held in neutral positions by compression springs 22 and 23, a part of which is positioned in each of the grooves. The adjacent ends of the springs of each pair are located at the opposite sides of the set screw 2l, while the other ends abut against the ends of the grooves, as shown best in Fig. 7.

In this manner, the knob assumes a neutral position in which both springs 22 and 23 are under the same compression.

To facilitate assembly of the springs in the grooves of the hub, I have provided a tool, shown by dotted lines and designated 24 in Fig. 6. This tool is in the form of a Spanner wrench and is provided with spaced lugs which are adapted to be inserted into holes designated IIc and IId in Fig. 6. The springs are located in the grooves between the ends thereof and between the pins extending through the holes I Ic and I Id. When the hubs are assembled in the escutcheon plates and the screws 2I inserted, the tool 24 is removed.

The inner ends of the hubs are provided with bolt actuating lugs I Ie and I 2e which extend into the box-like structure 3a at the inner end of the bolt actuating member 3. 'I'hese lugs are segmental in shape, as indicated in Fig. 5, and are formed by cutting off the major portion of one side of a reduced inner end of the hubs, thereby providing eccentric lugs. The fiat side of these eccentric segmental lugs are positioned against the inner or front sides of the laterally extended flanges 3b at the inner end of the bolt actuating member. Thus, rotation of the knobs in either direction causes the ends of the lugs to force the bolt actuating member inwardly and thereby retract the bolt.

The bolt actuating member is prevented from being drawn inwardly by locking rods 3l and 32, axially aligned with and reeiprocally mounted in the knobs II and I2. Both locking rods are arranged to be forced inwardly so that their inner ends are located behind the bolt actuating member and thereby prevent the inward movement of the latter. In the hubs of both knobs are ball checks 33 which are arranged to enter one of two depressions Nin the locking rods, the depressions in the rod 3| being designated 3|a and 3|", and the depressions in the rod 32 being designated 32*l and 32h. These ball checks are forced toward the locking rods by springs 34, which are held in position by plugs 35.

The locking rod 3| is forced into locking position by forcing inwardly the outer end of the locking rod which extends axially from the knob II. The outer locking rod 32 is forced inwardly by a latch 35 which extends upwardly through the under side of the hub I2a into an elongated notch 32c in the locking rod 32.

The locking rods 3l and 32 are drawn outwardly or free from the inner end of the bolt actuating member by suitable manual means, the withdrawal of the locking rod 3| in the inside knob being by means of a latch, whereas the withdrawal of the locking rod 32 in the outside knob being by means of a tumbler lock.

The locking rod withdrawing latch is here shown as consisting of a ring 4I, encircling the hub of the inner knob II, and a pin 42 extending diametrically across the ring. The pin extends through and is xed in the rod 3| so that shifting of the ring 4I shifts also the rod. The knob II is provided with an annular recess I If at its inner side for receiving and substantially concealing the latch ring 4I when the rod 3| is withdrawn.

In the outer knob I 2 is located the tumbler lock 5I, having a plug Sla. This plug 5Ia is provided at its inner end with a wedge cam 52 which is adapted to engage a pin 53 at the inner end of the outer locking rod 32. When the locking rod 32 is forced into its inward position by the latch 36, the pin 53 engages the end of the wedge cam 52, and rotation 0f the plug 5Ia by the key 54 in a clockwise direction causes the locking rod 32 to be drawn outwardly free from engagement with the bolt actuating member 3.

If either of the locking rods 3I or 32 is shifted to its inner or locking position, it is diicult to eject or shift the same to its unlocked position from the opposite side of the door, without pro viding relatively intricate mechanism. However, I have provided means whereby the locking rod 'at one side of the door may be shifted to its unlocked position by shifting the other locking rod inwardly, and then withdrawing the latter rod by either the manual latch 4I or the cylinder lock 5I above referred to. To facilitate the ejection or unlocking of one locking rod by means of the inward shifting of the other, I have provided a short rod or slide 6I at the inner end of the bolt actuating member 3. This slide is reciprocable transversely with respect to the bolt actuating member and is held in such sliding position by a bracket 62. This slide is resiliently maintained in a neutral or self-centering position by a leaf.

spring 63 which is held at its upper end by a lug 64 at the inner end of the bolt actuating member, but spaced above the slide. Thus, when the locking rod 3l is shifted to its inward position,A

indicated by dotted lines, the slide is slightly displaced, as also indicated by dotted lines. The locking rod 3| is held in such position by the ball check 33 entering the recess 3Ia. In orderto open the door from the outside, the locking rod. 32 is shifted inwardly by means of the latch 36 inward position by the ball check 33 which enters4 The locking rod 32 is then with- 4 drawn by inserting the key 54 and causing thel the recess 32a.

plug 5Ia to be rotated and the wedge cam 52 to engage the pin 53 and thereby withdraw the locking bolt 32 and thus permit the bolt 2v to be with-A drawn by the rotation of either knob.

Though I have shown and described a particular construction, combination, and arrangement of parts and portions, I do not wish to be limited to the same, but desire to include in the scope of my invention the construction, combination, and arrangement substantially as set forth in the ap pended claims.

I claim:

1. In a lock, a pair of opposed axially aligned knobs having hubs at their adjacent ends, a latch bolt housing located at right angles to the axis of the knobs, a bolt means reciprocally mounted in the housing, said bolt means having at the opposite sides of its inner end laterally extended flanges, the inner ends of the hubs having eccentric lugs, said lugs being positioned at and adapted to engage the inner sides of the corresponding flanges for retracting the bolt means with the rotation of either knob, separate locking rods reciprocally mounted in the hub of each knob, manual means in association with each knob for forcing its respective locking rod behind the inner end of the bolt means to prevent retraction thereof, and other means in association with the locking rods for shifting one out of bolt-locking position when shifting the other into bolt-locking position.

2. In a lock, a pair of opposed axially aligned knobs having hubs at their adjacent ends, a latch bolt housing located at Vright angles to the axis of the knobs, a bolt means reciprocally mounted in the housing, said bolt means having at the opposite sides of its inner end laterally extended anges, the inner ends of the hubs having eccentric lugs, said lugs being positioned at and adapted to engage the innervsides of the corresponding ilanges for retracting the bolt means with the rotation of either knob, separate locking rods reciprocally mounted in the hub of each knob, manual means in association with each knob for forcing its respective locking rod behind the inner end of the bolt means to prevent retraction thereof, and means at the inner end of the bolt means for shifting one locking rod outwardly with the inward shifting of the other locking rod.

3. In a lock, a pair of opposed axially aligned knobs having hubs at their adjacent ends, a latch bolt housing located at right angles to the axis of the knobs, a bolt means reciprocally mounted in the housing, said bolt means having aty the opposite sides of its inner end laterally extended ilanges, the inner ends of the hubs having eccentric lugs, said lugs being positioned at and adapt ed to engage the inner sides of the corresponding flanges for retracting the bolt means with the rotation of either knob, separate locking rods reciprocally mounted in the hub of each knob, manual means in association with each knob for forcing its respective locking rod behind .the inner end of the bolt means to prevent retraction thereof, and a self-,centering plunger reciprocally mounted transversely with respect to the bolt means and in normal alignment with the locking rods for shifting one locking rod outwardly lwith the inward shifting of the other locking rod.

4. In a lock, a pair of opposed axially aligned knobs having hubs at their adjacent ends, a latch bolt housing located at right angles to the axis of the knobs, a bolt means reciprocally mounted in the housing, said bolt means having at the opposite sides of its inner end laterally extended flanges, the inner ends of the hubs having eccentric lugs, said lugs being positioned at and adapted to engage the inner sides of the corresponding anges for retracting the bolt means with the rotation of either knob, separate locking rods reciprocally mounted in the hub of each knob, manual means in association with each knob for forcing its respectivelocking rod behind the inner end of the bolt means to prevent retraction thereof, means at the inner end of the bolt means for shifting one locking rod outwardly with the inward shifting of the other locking rod, and other manual means in association with each knob for withdrawing the locking rod in the corresponding knob.

5. In a lock, a latch housing, a latch member movably mounted therein, operating members at the opposite sides of the housing for operating the latch member, separate locking members at the opposite sides of the housing, manual means in association with each of the operating members for forcing its respective locking member into the path of the latch member to prevent retraction of the latter, and means in association with the inner portion of the latch member for shifting one locking member outwardly with the inward shifting of the other locking member.

6. In a lock, a latch housing, a latch member movably mounted therein, operating members at the opposite sides of the housing for operating the latch member, separate locking members at the opposite sides of the housing, manual means in association with each of the operating members for forcing its respective locking member into the path of the latch member to prevent retraction of the latter, and a self-centering locking member shiftably mounted at the inner portion of the latch member and in normal alignment with the rst mentioned locking members for shifting one of the latter outwardly with the inward shifting of the other of the latter.

7. In a lock, a latch housing, a latch member movably mounted therein, operating members at the opposite sides of the housing for operating the latch member, separate locking members at the opposite sides of the housing, manual means in association with each of the operating members for forcing its respective locking member into the path of the latch member to prevent retraction of the latter, means in association with the inner portion of the latch member for shifting one locking member outwardly with the inward shifting of the other locking member, and other manual means in association with each of the operating members for withdrawing the locking member in the corresponding operating member.

8. In a lock, a knob having a hub and an annular groove at the inner side of the knob around the hub, bolt means cooperating with the knob, a locking rod extending through the hub to prevent retraction of the bolt means, said hub having a transverse slot connecting diametrically opposite sides of the groove, a locking ring reciprocally mounted on the hub and adapted to enter the groove, and a pin extending diametrically across the ring through the slot and fixed to the rod for axially shifting the rod with the axial movement of the ring.

EUGENE V. KIDDER.