US3022102A - Emergency release bar - Google Patents

Description

Feb. 20, 1962 F, J, RUSSELL ET AL 3,022,102

EMERGENCY RELEASE BAR Filed June 29, 1959 3 Sheets-Sheet 1 FRED J RUSSELL FkA/vz J /VETSCHERT INVENToRs.

ATTORNEYS.

F. J. RUSSELL ETAL 3,022,102

EMERGENCY RELEASE BAR Feb. 20, 1962 3 Sheets-Sheet 2 Filed June 29, 1959 f \-n n il] 'Wu /g L7! FRED J RUSSELL l FRANZ J. NETSCHERT JNVENToRs.

ATTORNEYS.

Feb. 20, 1962 F. J. RUSSELL Erm.

EMERGENCY RELEASE EAR 3 Sheets-Sheet 3 Filed June 29, 1959 S. R m m W.

ATTORNEYS.

United States Patentfee 3,922,192 Patented Feb. 20, 1962 3,022,102 EMERGENCY RELEASE BAR Fred J. Russell, 3800 Don Felipe Drive, Los Angeles, Calif., and Franz J. Netschert, Glendale, Calif.; said Netschert assigner to said Russell Filed June 29, 1959, Ser. No. 823,447 4 Claim. (Cl. 292-169) The invention relates to door locks and has particular reference to a lock commonly identied as al privacy lock which can be barred from the inside by use of a button from access by operation of the outer knob but which includes an emergency release accessible from the outside by means other than a conventional key. The locks in question are commonly made use of on bathroom doors, bedroom doors, and similar locations where it is undesirable to employ the usual key locks for security purposes.

In the past locks of this general description which have had the privacy lock feature and emergency release have necessitatedn the employment of some specialV instrument to fit the emergency release in order to unlock the door from the outside. The necessity for such a special instrument is comparable to the necessity of having'a key to the extent that in an emergency the special instrument has to be found before it can be used and where use is infrequent, the instrument is quite likely to be misplaced. Also on locks of this kind previously employed, although recognizing the possibility of having the door slam shut and inadvertently locked, it has been sought to provide against this possibility by special features designed and built into the lock by use of additional parts rather than a rearrangement of the ordinary necessary parts of the lock to preclude such inadvertent locking.

It is therefore among the objects of the invention to provide a new and improved door lock provided with a privacy lock and an emergency release therefor which can be'` manipulated in an axial direction through the outer knob assembly by use of any one of a variety of simple agencies such as a nail, piece of wire, or simple instrument, any one yor more of which are invariably handy.

Another object of the invention is to provide a new and improved door lock with privacy latching features and emergency release which is so constructed that should the door blow shut, the very act of depressing the latch bolt when the door slams shut is sufficient to preclude the locking feature from operating.

Still another object of the invention is to provide a new and improved privacy lock set equipped with an emergency release operating through the spindle areas which is sutciently simple in its design and construction to minimize the number of parts required and to preserve the necessary simplicity of construction and operation, thereby to assure long life for the lock set.

With these and other objects in view, the invention consists in the construction, arrangement andncombination of the various parts of the device, whereby the ob jects contemplated are attained, as hereinafter set forth, pointed out in theappended claims and illustrated in the accompanying drawings.

In the drawings:

FIGURE 1 is a longitudinal sectional view through a lock set showing the privacy lock mechanism in locked position.

FIGURE 2 is a cross-sectional view taken on the line 2,-2 of FIGURE 1;

FIGURE 3 is a longitudinal sectional view similar to FIGURE 1 showing the release bar being moved to release position.

FIGURE 4 is a longitudinal sectional view similar to FIGURE l showing the entire mechanism in released position.

FIGURE 5 is an exploded View of interior operating parts which control the locking and unlocking operation.

FIGURE 6 is a fragmentary cross-sectional view taken on the line 6-6 of FIGURE 1.

In an embodiment of the invention chosen for the purpose of illustration there is shown installed in a door 10 a lock set having the features of the invention. The lock set comprises usual essential elements including an inner knob assembly 11, an outer knob assembly 12 and a latch bolt assembly 13 operatively connected to the knob assemblies by employment of a retractor assembly 14. The general arrangement of the knob assemblies with the retractor assembly and latch'bolt assembly are further illustrated in 4co-pending application Serial No. 796,321, tiled March 2, 1959, and Serial No. 796,612, led March 2, 1959, now Patent No. 2,959,439 dated November 8, 1960.

It will be noted that a tail piece 15 of the latch bolt assembly engages with projections 16 and 16' of the retractor assembly so that as the retractor is moved from left to right, as viewed in FIGURE 2, under the impetus of rotation of the knob assemblies, a latch bolt 17 is manipulated. Pins 18 mounted in recesses 19 of a body 20 of the retractor assembly are manipulated by the knob assemblies to shift the retractor assembly in a transverse direction. v

The body 20 is contained within a chamber 21 of a l frame 22 which lies within a cylindrical housing 23. The

cylindrical housing in turn is attached to projections 24 which form part of the latch bolt assembly 13, thereby to mount those two elements in operating relationship.

The inner knob assembly 11 includes a tubular spindle 25 which is rotatably mounted within a tubular extension 26 of the housing. A knob 27 containing a hollow tubular sleeve 28 is mounted upon the outer end of the spindle 25 and retained thereon by an appropriate pin 29.

Within a cylindrical chamber 30 in the outer end of the spindleZS is a cylindrical jacket 31 having a bottom wall 32 therein with a relatively large opening 33 extending through the bottom. `In the wall of the jacket is an open end slot 34 joined to a closed end slot 35 by a transverse slot 36.

Fitting within the jacket 31 is a core piece 37 having side elements 38 and 38 and also having a bottom 39 with a rectangular opening 40 extending therethrough. A projection 41 extends outwardly from one side of the bottom and is adapted to slide through the open end slot 34, thence laterally through the transverse slot 36 into the closed end slot 35 where it is adapted to recipro cate in an endwise direction. A hollow button 42 ts over the outer end of the core piece 37. A spring 43 is mounted between the inside of the bottom 32 of the jacket and the outer face of the bottom 39 of the core piece 37, this being a compression spring tending to move the core piece outwardly relative to the jacket.

Within the outer knob assembly 12 is a spindle which is rotatably mounted in a tubular extension 47 which forms part of the frame 22. On the outer end of the spindle 46 is a knob 48 having a sleeve 49 therein, the sleeve being in engagement with the outer end of the spindle and with the knob held thereon by an appropriate pin 50. l

A dogging assembly 51 is slidably mounted within the interior of a'chamber 52 in the spindle 46. The dogging assembly includes a body 53 having pins 54 and 54 projecting therefrom into slots 55, 55' in the wall of the spindle 46. A spring 56 located between the pin 50 and the outer end of the body 53 tends to normally urge the body in a direction from right to left, as viewed in FIGURE 1. At the opposite end of the body is a dogging element 57 having an extension 58 thereon receivable in a recess 59 in the tubular extension 47, the tu- Vouter knob assembly against rotation.

Vleft lto right, as viewed in FIGURE` l.V

Roll-back elements 69 outhe spindle 25 and 61 on the spindle 46 are adapted to be rotated into engagement,

with the pins 18 previously identied in order to manipulate Vthe latch bolt.

A pair of parallelbars 65 and 66 lie adjacent each other and extend from the interior of the jacket 31 through the spindle 25 and the frame 22 into the leftmost end of the spindle 46. The bars are of different length, the bar 65 being slightly longer than the bar 66.

The bar 65 has an extension 67 thereon extending beyond an extension 68 on the bar 66, the extension 67 having a projection 69 overlying Vthe outermost end of the extension 68. The two extensions 67 and 68 extend through the openingY 33 into the interior of the jacket 31.

- the interior of the button 42.

At the opposite end of the bar 66 is a pair of rectangular notches 73 and 73 spaced insuch relationship that they receive side plates 74 of a latching member or latching slide indicated generally bythe reference character'75. Guide plates 76, 76 form the other two sides of the latching member. This member is normally springy urged by means of a spring 77 .which bottoms uponthe Both extensions 67 and 68 protrude through the rectangular opening 4G in the bottom 39 of the core piece,

Y moved toward the rightso that cam faces 90 and 91 in the notches 82, 82 act against the side plates 74 and shift the side plates out of engagement with the notches 73, 73. It Will be understood that the bar 65 is free to move endwise against .the disc 71Vand pressure of spring 72, thereby collapsing the spring 72 without it being necessary for the bar 66-to move at all during the beginning of the releasing operation.

After the latching member has been vshifted to initial position, as shown in. FIGURESV 3 and 4, the bar 66 can then move. Movement will lbe effected Iby action of the spring 56 which will push the Ibar 66 from ,right to left housing 23 and tends normally to urge the latchingl member into the frame or infa direction from right to left,'as viewed in FIGURE 2. Heavier springs 78 acting in the same direction urge the body 29 of the retractor assembly in the same direction. y

When the lock is to be set in locked position from the inside, the button 42 is pressed inwardly from the `position of VFIGURE 4 tothe position of FIGURE l. During thisV movement the bar 66 is moved to a position Vwherein the notches 73, 73 align themselves with the side plates 74 and the side plates` are-pushed into the notches byV action of theV spring 77. end element 79 of the bar 66 presses endwise against the clogging element 57 and shifts the extension-5S thereon into the recess 59. The extension in this position, inasmuch as it at the same .time lies within a slot S1 in the spindle 46, locks the outerspindie 46 and appropriate Hence, the door cannot be opened from the outside. Y

It will be understood that when the button 42 is depressed, it presses against the core piece 37 and because the corre piece is interlocked with the bar 66, the bar is moved byV axial motion of the core piece. At the same time the disc 71 under compressive pressure of Vthe spring 72 is moved'by virtue of movement-of the button 42 against the projection 69 and extension 67V of the bar.

65, thereby also moving the barr65 in a direction from The bar 65 is moved until notches 82, 82 also fall in alignment with the side plates 74 and the notches 73,773. Hence, since both bars areV moved-together, there is no impediment tothe shifting 'of the latching member 75 to a position where Vthe side plates enter both setsV of notches.

Ancud element 83 on the bar 65 extends into a bore 84 within the body'53 of the dogging assembly. A shoulderr85 limits motion of the bar 65 in a direction from Yleft to right, as viewed in FIGURE 1. When Vit is desired to release the setting just described,

During this movement an and at the same time move vthe Vextension 5K8 of the dogging element 57 out of the recess 59 to the position illustrated in FIGURE 4. In this position the outer knob assembly is free to rotate and hence manipulate the latch bolt 17.

Should the lock be in a locked position` as viewed in FIGURE 1, while the door 10 is open, the mechanism is released when the ydoor closes by reciprocation of the latch bolt 17 This occurs because the tail piece 15 moves endwise against the guide plates 76, 76of the latching member, as viewed in FIGURE 2, and thereby shift the latch member to a position such that the side plates 74 are disengaged from theV notches 73, 73'. The same mechanism also serves as a precaution against inadvertent locking of the mechanism should they door inadvertently slam shut for any reason. v Y

It will be appreciated from the foregoing description of the mechanism here involved and the operation thereof that unlatching can be smoothly and easily accomplished by shifting Vthe relatively Asimple latching parts vin an axial or endwise directionjby virtually any instrument, the cross-section of which is no greater tha-n a small nail small enough to be'inserted through the access hole 87. The parts, moreover, are Vof such simple design Vand assembly that they operate smoothly throughouta limited ingly is one not only easily fabricated and assembled but also one which Will continue to operate successfully over extended periods of time.

While the invention has herein been shown and described in what is conceived to be the most practical and preferred embodiment, it is Vrecognized that departures may be made therefrom within the scope of the Vinvention, which is notl to-be limited to the details disclosed herein but is to be accorded the full scope of Ithe claims so as to embrace any and all equivalent devices.

Having described our invention, what we claim as new and desire to secure Letters Patent is:

1,'In a door look having a stationary portion for mounting in a doo-nia reciprocating latchbolt assembly, a retractor in operable engagement with the Iatchgbolt assembly, and an inner and an outer knob assembly for independently actuating the retractor, the combination of a clogging member carried by the outer knob assembly and having an axially-slidable mounting relative to said stationary portion between a dogging engagement with said stationary portion and a released-position,` a spring return means acti-ng against the dogging member',; a latching slide havingpa -slidablev mounting relative to said retractor, a rst bar having a longitudinally reciprocating mounting in said inner knob assembly'andextending from said inner knob assembly through said retractor and in axial engagement with said cloggingV member, a second bar parallel to said -lrstbar having Va longitudinally reciprocating mounting in said inner knob assembly and extend- Y ing from said inner knob assembly through said retractor,

of said slide when said rst bar is moved with said dogging member into dogging position, release cam means associated with the second bar, a release shaft having a longitudinally slidable mounting in said outer knob assembly and in endwise engagement With said second bar, means forming an access hole in said outer knob assembly, said release shaft being movable axially with said second bar and the cam means thereon to move said latching slide out of engagement with said :latching notches in said iirst bar.

2. In a door lock having a stationary portion for mounting in a door a reciprocating latch bolt assembly, a retractor in operable engagement with the latch bolt assembly, and an inner and an outer knob assembly for independently actuating the retractor, the combination of a dogging member having an axially slidable mounting in the outer knob assembly between a dogging engagement with said stationary portion and a released position, a spring return means acting against the dogging member, a latching slide having a transversely slidable mounting relative to said retractor, a tirst bar having a longitudinally reciprocatable mounting in said inner knob assembly and extending from said inner knob assembly through said retractor into said dogging member and in axial engagement with said dogging member, a second bar parallel to said iirst bar having a longitudinally reciprocatable mounting in said inner knob assembly and extending from said inner knob assembly through said retractor into said dogging member, said bars being rotatable with respect to said dogging member means forming latching notches respectively in said first bar and said second bar receptive of said slide when said bars are moved with said dogging member into dogging position, said second bar being movable longitudinally independently of said first bar, release ca m means associated with the notches in said second bar, a release shaft slidably mounted in said outer knob assembly and in endwise engagement with Isaid second bar, means forming an access hole in said outer knob assembly, said release shaft being movable axially with said second bar and the cam means thereon to move said latching slide out of engagement with said latching notches in said first bar.

3. In a door lock having a stationary portion for mounting in a door, a reciprocating latch bolt assembly, a retractor in operable engagement with the latch bolt assembly, and an inner and an outer knob assembly for independently actuating the retractor, the combination of a dogging member having an axially slidable mounting in the outer knob assembly between a dogging engagement with said stationary portion and a released position, a spring return means between said outer knob assembly and the dogging member, a latching slide having a transversely slidable mounting in said retractor normally spring pressed into engagement with said retractor, a iirst bar extending from said inner knob assembly through said retractor and said dogging member and in axial engagement with said dogging member, a second bar parallel to said Erst bar and extending from said inner knob assembly through said retractor into said dogging member, means forming latching notches respectively in said iirst bar and said second bar receptive of said slide when said bars are moved with said dogging member into dogging position, said bars being reciprocatable independently of each other, release cam means associated with the notches in said second bar, a release shaft slidably mounted in said outer knob assembly and in endwise en gagement with said second bar, and means forming an access hole in said outer knob assembly, said release shaft being movable axially with said second bar and the cam means thereon to move said latching slide out of engagement with said latching notches in said first bar, said latching slide being subject to movement by said retractor whereby to elect return of said slide to initial position independently of movement of said release shaft.

4. In a door lock having a stationary portion for mounting in a door a reciprocating latch bolt assembly, a retractor in operable engagement with the latch bolt assembly, and an inner and an outer knob assembly for independently actuating the retractor, a dogging member having an axially -slidable mounting in the outer knob assembly between a dogging engagement with said stationary portion and a released position, guide means on said dogging member having an axially slidable and nonrotatable engagement with said outer knob assembly, a spring return means between said outer knob assembly and the dogging member, a latching slide having a transversely slidable mounting in said retractor normally spring pressed into said retractor, a iirst bar extending from said inner knob assembly through said retractor into said dogging member and in axial engagement with said dogging member, a second bar parallel to said first bar and extending trorn said inner knob assembly through said retractor into said dogging member, means forming latching notches respectively in said rst bar and said second bar receptive of said slide when said bars are moved with said dogging member into dogging position, said second bar being reeiprocatable independently of said iirst bar, release cam means associated with the notches in said second bar, a release `shaft slidably mounted in said outer knob assembly and said dogging member and in endwise engagement with said second bar, and means forming an access hole in said outer knob assembly, said release shaft being movable axially with said second bar and the cam means thereon to move said latching slide out of engagement with said latching notches in said iirst bar.

References Cited in the tile of this patent UNlTED STATES PATENTS 2,293,856 Schlage Aug. 25, 1942 2,299,180 Schlage Oct. 20, 1942 2,759,352 Fisler Aug. 21, 1956 2,864,328 Butter Aug. 27, 1957 2,828,152 Unetic et al. Mar. 25, 1958

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