US2923145A - Latch and lock for sliding door - Google Patents

Description

Feb. 2, 1960 J. c. LABRIE LATCH AND Loox FOR sLmNG Doos Feb. 2, 1960 J. c. LABRIE 2,923,145

LATCH AND Locx FOR sLIDiNG DooR Filed Dec. 14, 1956 3 Sheets-Sheet 2 Joseph C. abr/'e IN VEN TOR.

MMWMW Feb. 2, 1960 Filed Dec. 14, 1956 J. C. LABRIE LATCH AND LOCK FOR SLIDING DOOR 5 Sheets-Sheet 3 HHIHIIIHI Joseph C.

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abr/'e IN VEN TOR.

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Units@ Patent i LATCH AND LOCK FOR SLIDING DOOR Joseph C. Labrie, Miami, Fla.

Application December 14, 1956, Serial No. 628,317

` Claims. (Cl. 70-97) This invention relates to hardware for a sliding door and more particularly to a latch which is of unique construction, enabling the use of a wafer or pin tumbler lock within the latch and yet remain within the confines of the thickness of an ordinary sliding door.

The nature of this lock which makes it so important is the unique design to match the design of all the popular borings of tubular locks. The cylinder of this lock is interchangeable on any of the tubular locks on the market today, for instance, Schlage, Yale, Corbin, Russell- Erwin, Sargent, Arrow Lock, National Lock, Quik-Set, West Lock brands and many others. This unit can be installed on any of those jobs as mentioned above and mastered to their same ve pin tumbler locks for one and three-eighths inch doors. Also, this lock can be installed in any hotel, motel, apartment house or public building and master keyed to their own choosing for one and three-fourths inch doors and six pin tumbler type for section master and grand master. reversible properly for right hand or lett hand doors without turning the key upside down in the matter of a minute without adding anything.

An object of this invention is to provide a combination latch and pin or Wafer tumbler lock which is easily installed in a sliding door without mortising or making any special openings other than circular bores or passages, the purpose being to provide a practical wafer or tumbler type lock controlled latch for a sliding door wherein. the mechanism is contained entirely within the Hush escutcheons. A further object of the invention is to provide a novel structural interaction between the various parts of a pin or Wafer tumbler lock controlled latch capable of tting within a sliding door and without objectionable protruding door knobs or the like.

I These together with other objects and advantages which will become subsequently apparent reside in the details of construction and operation as more fully hereinafter described and claimed, reference being had to the accompanying drawings forming a part hereof, wherein like numerals refer to like parts throughout, and in which:

v Figure l is an elevational view of a part of a door which has a lock constructed in accordance with the invention disposed therein; l

Figure 2 is a view in elevation of the same part of the door in Figure 1, but showing the opposite side thereof;

Figure 3 is an elevational view taken on the line 3-3 of Figure l;

Figure 4 is a view taken approximately on the line 4 4 of Figure 1 and showing the keeper and keeper plate which is adapted to be engaged with the bolt of the latch and lock in Figure 1;

Figure 5 is a sectional view taken on the line 5-5 of Figure 3 and showing the bolt in the keeper engaging position;

Figure 6 is a sectional view taken on the line 6-6 of Figure 3;

' Figure 7 is an enlarged sectional view taken on the line This lock is also back wall 32 of casing 24.

7 7 of Figure 1 and showing the door in the locked position;

Figure 8 is a sectional view taken on the line 8-48 of Figure 7;

Figure 9 is a perspective view of the bolt and means mounting the bolt for pivotal movement in the sliding door;

Figure l0 is an exploded, perspective view showing the rear sides of one of the escutcheon plates and a plurality of the elements which are assembled as shown in Figuresl 7and 8;

Figure 11 escutcheon, lock casing, wafer or pin tumbler lock,

one of the handles and parts which are rigidly secured to that handle; and

Figure l2 is a perspective view of the keeper and keeper plate which is suggested to be used with the door mounted lock and latch.

In the accompanying drawings there is a sliding doorv 10 which schematically represents any type of such door; Usually an inside door of and of ordinary thickness. this type is one and three-eighths inches thick, while an outside door is generally one and three-fourths inchesI or greater in thickness. The invention provides a means whereby a conventional wafer or tumbler type lock 12 is used to lock bolt 14. Note from Figures 7 and 8 that the wafer or pin type tumbler lock 12 is of a length almost equal to the thickness of door 10. It, therefore, is a problem to operatively arrange such a lock, assuming for the purposes of discussion that the lock 12 is a pin type lock, entirely within the front and rear surfaces of door 10 and yet have it work properly. Such a lock' has inherent advantages which are known in the art and must be used in hotels and other similar places whereas' other types of'locks will not serve the purpose.

The following description shows how such a lock 12- is capable of practical use in a sliding door 10 which has such a small thickness dimension. Door 10 has a passageway 16 formed in it, as by drilling, and there isf a bore 1S which opens through an edge of the door and which registers with passage 16. The passage and bore' cylindrical lock casing 24 by bolts 25 and 26 which pass through holes 27 and 28 in escutcheon plate 22 and which are threaded in sleeves 30 and 31 nxed onto the This means that the lockl easing 24 is inserted in the passage 16 behind escutcheon- 22 and that the other escutcheon 20 is fitted liush against the wall 32 of lock casing 24. There are holes 35 and V36 in escutcheon 20, with bolts 37 and 38 passing through these holes and through aligned holes 39 and 40 in the back wall 32 of lock casing 24.

Two separate parts 44 and 45 (Figure 10) are secured together by bolts 46 and 47 and, accordingly, they function as one piece, but must be made in two pieces for assembly. The part 44 vis a combination handle and' door pull fitting ush Within the generally cylindricalv escutcheon 22 and having a partially cylindrical sleeve 48 extending from one surface thereof. The sleeve 48 has tapped holes within which the bolts 46 and 47 are secured, the bolts being passed through aligned holes V hole 57 tits between confronting surfaces of the handle i y Patented Feb. 2,

is a perspective view of the otherl 4 4 and the part 45, which is in the form of a collar which :tits around the outer surface of sleeve 48 and which has a cylindrical key 59 at one end. Shoulders 60 and 61 on opposite4 sides of a slot 62 in part 45 bear against the tongue or anchor 63 of the lock 12.y

Notch 66, isformed in escutcheon. 22 and is in registry with the hole 57. This is a locking notch which cooperates with the locking element 70. Element 70 has two spindles 71 and 72 protruding from opposite sides of a body 73 whose upper edge has a cam surface 74 thereon. Cylindrical key 59 (Figures 7 and l0) has recess 75 in which the body 73 of the locking element 'Z0y is accommodated. Spindle 72 is slidable in bore 76 in key S9 (Figure 7) and is spring-pressed outwardly by spring 77 which seats in bore 76. Spindle 71 is engageable in opening 78 that is formed in the backV side of part 44 (Figure 10)k and is operable within a recess 79 formed in part 44 and aroundA opening 78. Whenin the position shown in Figure 7, the locking element 70 couples handle part 44 with collar 4S and4 has its body '73 located in the notch 66, preventing handle 4 4 fromr rotating because it is coupled to escutcheon 22 by locking element 70. This, then, retains the door inV a locked position so that the same cannot be opened from one side thereof. In order to release the locked condition ofthe handle part 44, the ush mounted knob or button 80, which is rotatable in recess 89 formed in part 44, is revolved. The iiush mounted button 80 has a plug, 81' integral with one surface thereof, the latter having a slot enlarged S2 therein. This slot receives. the tang 83 of lock 12, and is loosely fitted in slot 82'y to provide a lost motion connection therewith, and upon rotation thereof, the lock 12 is actuated. However,.to release the element 70 from its position wherein the. handle part 44 cannot rotate, there is a cup 86 connected, as by bolts 87 and 88 to the back surface ofA the, plug 81'. This plug 81' tits in a recess 89 that is formed in the center of handle part 44, while the cup 86' has its back wall fitting on a shoulder 90 formed in the handle part 44 and rotatable thereon. Bolts 87 and 88l hold the cup 86 and the rotary button 80 assembled with: the handle part 44. Cam surface 92 is formed in the wall. of cup 86 and has a shallow land 9,3 and a deep land 9.4. Cam surface 74 is movable over the cam surface 92, and when locking element 70 has its surface. 74 on deep land 94, the lock mechanism is in the locked condition, but when element 70 is moved to position surface 74 on shallow land 93, the lock mechanism is` inthe unlocked condition. Therefore, when the button 80 is rotated, cam surface 92 pushes the locking element` 70 against the bias of spring 77 and thek body out of the notch 66. When so moved, handle part 44 and; collar 45 which is bolted to it may both rotate in unison with respect to the escutcheon 22.

Handle 100 (Figure 11) Yis so dimensioned as to` lit Within the escutcheon 20 and be flush therewith. The` handle has a central opening 101 through which the pin. or wafer tumbler lock 12 passes, with the key hole part exposed for reception of Va key. There is a sleeve 105 on the back side of handle 100, the sleeve passing through central opening 106 in escutcheon 20 and a corresponding opening 108 in the back wall 32 of lock casing 24. The escutcheon 20 has an enlarged notch 107 registering with opening 106 to permit the anchor 63 to. rotate a limited amount therein. Parts 110. and 112 are connected by bolts 113 and 114 together as a unit, with a shoulder 116 on the part 110 bearing against the. inside surface of back wall 32 of lockcasing 24V in order to hold the three parts 100, 110 and 112 assembled around they cylinder of the lock 12. Shoulder 116. nests over sleeve 10S and the, part 112. is generally cylindrical With an inwardly directed, intermediate, transverse rib 120 which fits between the confronting surfaces of parts 116 and 45. An approximately annular shoulder 122 is on part 116. in` order to nestwithin. the part 112,

while the annulus 124 of part 45 also nests within the part 11'2 but on the other side of rib 120. Recesses 126 and 127 have key 59 nested therein, and there are slots 128, 129 and 130 that are aligned and that are in parts 100, and 112 respectively, these slots being lined up with similar slots in the back wall 32 and the escutcheon 20. As shown in Figure 7, lock 12 has its anchor 63 fitted in slots. 129, 130 and 62. When lock 12 has the key fitted in it and turned to the lock position, the cup 86 moves the locking element 70 in such position that no interior partsy of the lock are capable of rotating withl respect to escutcheon 22. But, when the key is turned to the opposite position, the locking element is separated from engagement with the notch 66 of escutcheon 22 and either handle 44 or 100 is capable of being rotated, and in each instance the part 112 is rotated therewith.

Part 112 constitutes a bolt actuating member. Bolt 14 isv fitted in sleeve 140 and has a bill 141 at one end thereof. The opposite end has a hook 142 which tits over tube 30 when assembled (Figure 5), and there is a pivot pin 144 which passes through a hole 146 in the bolt 14 and through a bore 148 in the body 150. The body isinserted in sleeve 140 after assembly of the bolt 114 therewith, the latter tting in recess 153 in body 150. The recess opens upwardly to expose spring which seats in hole 162 formed in the top part of bolt 14. Spring 160 also seats against the top surface of sleeve 140, thereby constantly applying a downward spring bias on the bolt 14. There are side iiats 164 on the body 150 which cooperate with the fiat surfaces 165 in sleeve 140, thereby preventing the bodyA and the bolt from rotating with respect to the sleeve 140. Aligned holes 167 and 169 in thev atsurfaces 164 of body 150 are arranged to have the tube 30 assembled therewith, leaving exposed the hammer 170 on bolt 14. There is a shoulder 173` on thel bolt actuating member or part 112 which contacts hammer 170 and pivots the latch 14, thereby operating it against the opposing bias of spring 160. In order to return the actuating member 112 after it has been placed to use for actuating bolt 14, spring 178 is attached to a post 179 at one end and carried by the bolt actuating member 112 and is hooked over tube 31.

Escutcheon 19,0 is preferably mortised in the edge of door 10 and has a beveled opening 191 therein through which the keeper 193 is adapted to pass. Escutcheon has holes to accommodate screws and has a shim 194' behind it, this shim also being apertured. Keeper 193 is of standard construction and is mounted on a keeper plate 19S which mayl be attached by screws oli other fasteners to the door jamb 19S or some other stationary part with which the door is operatively connected;

The foregoingl is considered as illustrative only of the principles of4 the invention. Further, since numerous modifications and changes will readily occur to those skilled inthe art, it is not desired to limit the invention to the exact construction and operation shown and described, and accordingly all suitable modifications and equivalents may be resorted to, falling within the scope of the invention as claimed.

What is claimed as new is as follows: l

1. In a sliding door that has a circular passage extending through bothof itsl surfaces and a bore opening through one edge of the door and into said passage, a door latch and lock mechanism comprising a casing in said passage,- escutcheons having aligned apertures and recessed within said passage, a handle recessed in each escutcheon, a part of each handle being mounted for oscillation in said apertures of said escutcheons said handles having central openings, a tumbler lock in said central openings, said casing having an opening, a'bolt pivotally mounted. in saidbore and extending through said casing opening, mechanical means drivingly connesting said handles, to said, bolt, to actuate the latter,

means including a locking element to couple said mechanical means to one escutcheon and thereby prevent said handles from moving, a locking element actuating part and return spring to activate said locking element to and from engagement with said one escutcheon, and said tumbler lock operatively connected with said actuating part.

2. In a sliding door that has a passage extending through both of its surfaces and a bore opening through one edge of the door and into said passage, a door latch and lock mechanism comprising a casing in said passage, escutcheons having aligned apertures and recessed within said passage, a handle recessed in each escutcheon, a part of each handle being mounted for oscillation in said apertures of said escutcheons, said handles having central openings, a tumbler lock in said central openings, said casing having an opening, a bolt pivotally mounted in said bore and extending through said casing opening, mechanical means drivingly connecting said handles to said bolt to actuate the latter, means including a locking element to couple said mechanical means to one escutcheon and thereby prevent said handles from moving, a locking element actuating part and return spring to activate said locking element to and from engagement with said one escutcheon, said tumbler lock operatively connected with said actuating part and having a keyhole accessible from one side of the door, and a manual operator connected to said actuating part and accessible from one side of said door and associated with the handle on that side of the door.

3. The door latch of claim 1 wherein said mechanical means include a spring returned member having a part in contact with said bolt, a tube in said bore, and said bolt being pivoted to said tube.

4. The sliding door latch and lock mechanism of claim 2 wherein said locking element actuating part includes a cam mounted in the aperture of one of said escutcheons, said manual operator attached to 'said cam to operate said cam in response to movement of said manual operator, said tumbler lock having a tang, said manual operator having a slot and said tang disposed in said slot.

5. The sliding door latch and lock mechanism of claim 2 wherein said locking element actuating part includes a cam mounted in the aperture of one of said escutcheons, said manual yoperator attached to said cam to operate said cam in response to movement of said manual operator, said tumbler lock having a tang, said manual operator having a slot and said tang disposed in said slot, said mechanical means including a spring actuated member having a part in contact with said bolt, and means displaceably mounting said bolt in said bore.

References Cited in the le of this patent UNITED STATES PATENTS 1,829,815 schlage Non 3, 1931 2,226,499 Ledin Dec. 24, 1940 2,666,319 Price Jan. 19, 1954 2,744,406 Labrie May 8, 1956 FOREIGN PATENTS 821,320 Germany Nov. l5, 1951

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