US2038907A - Lock structure - Google Patents

Description

W. R.- SCHLAGE LOCK STRUCTURE Filed Jan. 10, 1934 3 Sheets-Sheet 1 April 28, 1936.

April 2s, 1936.

W. R. SCHLAGE LOCK STRUCTURE Filed Jan. 1o, 1934 s sheets-sheet? @www l ATToRNEYs.

April 28 1936 w. R. scHLAGE 2,038,907

LOCK STRUCTURE Filed Jan. l0., 1934 3 Sheets-Sheet 3 INV NTOR.

ATTORNE S.

Patented Apr. 28, 1936 UNITED STATES LOCK STRUCTURE Walter R. Schlage, San Francisco, Calif., assignor to Schlage Lock Company, San

Francisco,

Calif., a corporation of California Application January 10, 1934, Serial No. 706,049

8 Claims.

This invention relates to a lock structure of the type shown in my co-pending application entitled Door lockf-, led June 14, 1932, Serial Number 617,117, and particularly to improvements in the construction and mounting of the latch bolt retractor and cooperating mechanism.

The object of the present invention is' to generally improve and simplify the construction and operation of latch structures of the character described; to improve the construction of the latch bolt retractor; to provide a rigid guide and supporting plate for the latch bolt retractor; and further, to provide a yielding latch for securing or releasing the dogging member whereby certain parts of the lock structure are rendered lnoperative.

The invention is shown by Way of illustration in the accompanying drawings, in which- Fig. 1 is a horizontal section of the lock structure showing it inserted in a door, said view also showing the dogging mechanism in released position.

Fig. 2 is a view similar to Fig. 1 but showing the clogging member in dogging position.

. Fig. 3 is a vertical section taken at right angles to Fig. 1.

Fig. 4 is a cross section in side elevation taken on line IV-IV of Fig. 3.

Fig. 5 is a perspective view of the push rod and button whereby dogging mechanism is actuated.

Fig. 6 is a perspective View of one of the spindles.

Fig. 7 is a perspective view of the latch bolt retractor guide.

Fig. 8 is a perspective view of ing sections.

Fig. 9 is a perspective view of the lock housing cover.

Fig. 10 is a perspective view of the latch bolt retractor.

Fig. 11 is a perspective view of the auxiliary retractor.

Fig. 12 is a perspective view of the dog latch.

Fig. 13 is a perspective view of the dog latch showing it in a diiierent position from that shown in Fig. 12.

Fig. 14 is a perspective view of the dogging oi one of the one of the housmember.

Fig. 15 is a perspective view housing sections.

Referring to the drawings in detail, and particularly Figs. 1 to 4, inclusive, A indicates a door in which is inserted a latch actuating unit generally indicated at B and a latch unit generally indicated at C. The units-are separately (Cl. 'l0-16) insertable in the door and the door has two openings formed therein; one opening 2 which is bored through opposite faces of the door to receive the latch actuating unit B, and a second opening which is drilled through the edge of the door, as 5 indicatedat 3, to receive the latchunit C. The manner in which the units are secured in the respective openings will beA hereinafter described.

The latch actuating unit consists of- 'a central housing from opposite ends of which extend hub l0 members 4 and 5. The hub memberV 4 carries one part of the housing and the hub member 5 the second part of the housing. The part of the housing carried by the hub` member 4 consists of an end plate 6 on which .is formed a pair of ll horizontally disposed bracket arms 'l and 8, see Fig. 8. These bracket arms are cast or formed integral with the plate 6 and they are provided with a pair of outwardly extending threaded lugs 9-9 to receive securing bolts III-I0 which will 20 hereinafter be referred to. The bracket arms are also provided with a pair 'of hook-shaped lugs II and I 2 and the arms are further provided with lugs I3 and with aligned slots I4. The part of the housing carried by the hub member 5 termi- 25 nates in a substantially circular plate I5. This is provided with upper and lower pairs of rectangular shaped openings' I6 and I1 to receive the lugs II and I2 and the plate I5 is also providedwith openings I8 which align with the 30 threaded lugs 9 9,y which, as previously stated, are provided for the purpose of receiving the securing bolts I Il-Ill.

'Ihe housing is assembled by placing the plate I5 against the face of the bracket arms 1 and 3l 8 in such a position that the lugs II and I2 will pass through the slotted openings I6 and I'l. A cover housing I9, see Fig. 9, is slipped over the housing sections as clearly shown in Figs. 1 to 3. The end of the cover housing is provided with 40 slots I6a and I'Ia. for the lugs II and I2 to pass through and one of the lugs is perforated, as shown at 2D, to receive a cotter pin, or the, like, so as to secure the several parts of the housing against separation when assembled. The hous- 4l ing, when so assembled, may be inserted in the opening 2 of the door. The hub member 4 is externally threaded, as shown in Figs. 1 and 2, and it carries an escutcheon plate 2I. This plate` is screwed inwardly or outwardly on the threaded I@ section of the hub until the housing assumes a central position with the opening 2 of the door. An escutcheon plate 22 is then slipped over the end of the spindle 5 and the bolts III-III are then passed through the escutcheon plate 22 and through the openings I8 which align with the threaded lugs 9. These lugs function as nuts and when the bolts I are tightened the escutcheon plates will securely grip the opposite faces of the door and the housing will be rigidly secured. Previous to the installation just described, it will be understood that a retracting mechanism will be inserted in the housing and also that spindles will be inserted, such as shown at 24 and 25, and thereafter knobs such as shown at 26 and 21.

The retracting mechanism just referred to is supported by the numerals 4, 6, 1 and 8, see Fig. 8. The mechanism consists of a guide plate, see Fig. 7, consisting of a pair of horizontal larms 30 connected at one end by a cross bar 3I. The forward ends of the guide bars terminate in ears or vlugs 32. These are adaptedto be received by the slotted sections I4 of the bracket arms 1 and 8, while the opposite ends of the guide arms 30 are received between the lugs I3, there being two lugs on the bracket arm 8 and two lugs on the bracket arm 1. The slots I4 and the lugs I3 secure the guide member centrally between the plates 6 and I5 of the housing and the guide plate forms a guide and support for the latch bolt retractor which is clearly shown in perspective in Fig. 10. The retractor consists of a pair of horizontal arms 33which are provided with upper and lower shoulders 34, these shoulders being formed on opposite sides of the arms. The arms are longitudinally slotted, as shown at 35, and the arms are connected by an end plate 36 through which is formed a central opening 31. The forward ends of the arms terminate in fingers 38 and they are provided to engage the lugs 39 formed on the rear end of a latch bolt retractor bar 40, see Fig. 4.

By referring to Fig. 11 it will be noted that an auxiliary retractor is shown. This is nothing but an end plate 4I provided with two slotted rearwardly extending arms 42. The function of the auxiliary retractor will hereinafter be described.

In assembling the mechanism shown in Figs. '1, 8, 10 and 11, the auxiliary retractor is first placed within the arms of the retractor and the two retractors are then slid endwise over the guide member shown in Fig. '1, this being readily accomplished as the arms 33 of the retractor are longitudinally slotted to receive the arms 30 of the guide member. When the two retractors have been placed on the arms of the guide member, the guide member will be inserted endwise between the bracket arms 1 and 8 so that the rear ends of the arms will engage between the lugs I3 and the lugs 32 on the forward ends of the arms will engage in the notches or slots I4 of the bracket arms 1 and 8. When so inserted, plate I is applied over the lugs II and I2, as previously described, and after this is accomplished the cover housing I9 is applied and is secured in position by a cotter pin passing through the perforation of one of the lugs I2. The housing, thus assembled, carries the guide member shown in Fig. '1, together with the retractors shown in Figs. 10 and 11, and as the housing cover I9 encloses the mechanism, endwise movement of the guide member shown in Fig. 'I from between the slots and lugs support- 'ing the same is prevented; this being clearly shown in Fig. 4. Eachhousing section of the hub members 4 and 5 carries a spindle such as shown in Fig. 6. One spindle is numbered 24 and passes through the hub section 4. the other the housing section indicated by spindle is numbered 25 and it passes through the hub section 5. Each spindle is provided with a rollback member such as shown at 43, see Fig. 6, and these rollback members engage the shoulders 34 formed on the retractor. The spindles are first inserted in the respective housing sections, when these are being assembled, and the guide plate having the retractors mounted thereon are then inserted between the bracket arms 1 and 8. Plate I5 carrying the hub 5 is then applied and thereafter the housing cover, and when the mechanism is so assembled, it is ready for insertion in the o-pening 2 of the door where it is inserted, as previously described, by the application of the escutcheon plates and the tighten,` ing of the bolts Ill-I0.

In the actual installation of a lock of this character in a door, the latch unit section C is first inserted. The latch actuating unit is then inserted through the opening 2 and when it is inserted an interlock is formed between the two sections, which need not be here described as it has been fully disclosed and covered in a number of patents already issued to me. Sufiice it to say;that when'the lock mechanism is completely installed, it is only necessaryto rotate one knob or the other to open the door. In rotating the knob a cooperating spindle is rotated and as each spindle carries a rollback member 43, this rollback will engage the shoulders 34 of the retractor and cause it to slide inwardly on the guide arms 30, and as the retractor slides inwardly the ngers 38 engage the lugs 39 on the latch bolt retractor bar 40 and thus pulls the latch bolt inwardly and frees it with relation to the striker plate and the door frame. The ,latch bolt is projected by means of a spring 45 so that whenever a knob is released, after retraction, the latch bolt will be automatically projected and the knob will return to normal position.

In lock structures4 of this character it is common to employ a push button 46 in the inner knob. This push button actuates a dogging mechanism and the dogging mechanism functions to dog the outer spindle and knob against rotation, thereby preventing opening of the door from the outside when the push button 46 has been depressed. This mechanism has been fully described in a. number of my patents so a brief description should sufiice. The push button carries a pusher rod 41, see Figs. 1 to 3, and also Fig. 5. On the end of the rod opposite the push button 46 is mounted two cone-shaped collars 48 and 49. The outermost collar 48 engages one end of a spool-shaped member 50, see Figs. 1 to 3, and also Fig. 14. This spool-shaped member carries a dog 5I which is the actual dogging member. The spool-shaped member is guided and slidably mounted in the inner end of the spindle 24. The inner end of this spindle is slotted as shown at 52, see Figs. 1, 2 and 6, and the inner end of the hub member 4 is similarly slotted, as shown at 53. When the push button and pusher rod assumes the position shown in Fig. 1, the clogging member is clear with relation to the slot 52 on the inner end of the spindle 24, but when the push button is depressed, as shown in Fig. 2, dogging member 5I will not only enter the slot 53 but also the slot 52 of the spindle 24 and as the hub member 4 is non-rotatable and as the clogging member passes both through the slot 52 and the slot 53 spindle 24, together with the outer knob 26, will be dogged against rotation and the door cannot be opened from the outside when the push button has been depressed.

In moving the dogging member to dogging position it is necessary to secure the push button, the pusher rod, and the dogging member in the dogging position, and that is the function of the inner collar 49 on the pusher rod. yThat is, a. latch c0- operates therewith and engages collar 49 when the button has been depressed and the dogging member assumes dogging position. This latch is, however, releasable either by rotation of the inner knob or by depression of the latch bolt indicated at 60, the depression of the latch bolt 60 being accomplished by manual depression or by slamming or closing of the door. In either instance the latch securing the dogging member in dogging position will be released so that it will not be possible for a person leaving a room to lock him or herself out. For instance, a person leaving the room might inadvertently or carelessly depress the button and thereby throw the dogging member into dogging position. but the moment he or she closes the door, latch bolt 60 will be depressed and that will release the dogging member.

The latch cooperating with the collar 49 is best shown in Figs. 1, 2, 12 and 13. It consists of a flat plate 5| which is seated in the opening 31 formed in the end of the retractor, see Fig. 10. A spring 62 is interposed between the cross arm 3| of the guide member and the plate 6| so that the plate 6| is yieldingly held in the opening 31 of the retractor. 'Ihe inner face of the plate 6| is provided with a small protuberance in the form of a latch which is indicated at 63. Its function will be as follows: If the push button is pushed inwardly from the position shown in Fig. 1, the cone-shaped collar 49 will engage the inclined face of the latch 62 and thereby push the plate 6| inwardly against the tension of the spring 92. The moment the push button has been fully depressed, the collar 49 will assume the position shown in Fig. 2. That is, the collar will have passed slightly beyond the latch 63, thereby permitting spring 62 to return the plate 6| to normal position, or in other words to a position where the latch 63 will engage the outer face of the collar 49 and thereby latch or secure the push button and the pusher rod in depressed position. It also secures the dogging member in dogging position as this has been pushed into the slots 52 and 53, previously described. If it is desired to release the latch 63 so that the dogging mechanism may be rendered inoperative, it is only necessary to turn the inner knob or to depress the latch bolt 60. If the inner knob is rotated the rollback member on the inner end of the spindle will engage the shoulders 33 of the retractor and the retractor will be forced inwardly in the housing, thus moving the latch 63 away from the collar 49, and when it is released, springs 10 and will return the dogging member and the pusher rod and the push button to normal position. Similarly, if latch bolt 60 is depressed either manually or by closing of the door, the latch bolt bar 40, see Fig. 4, will move inwardly, the lugs 39 on the inner end will then engage the end plate 4| of the auxiliary retractor and as this is mounted within the main retractor and moves in unison therewith the main retractor will again be moved inwardly thus releasing the latch 63 and permitting the parts held thereby to return to normal inoperative position.

A latch for securing the push button and dogging means actuated thereby in dogging position has previously been employed by me, and is disclosed in several of my patents, but, in each instance, the latchydepends upon the tension of the spring 45 of the latch bolt to hold it in latching position. 'I'he tension of this spring is considerable, hence whenever the push button was depressed and the latch engaged, it would engage with a click; also it required an unnecessary amount of endwise pressure on the end of the push button to press it into dogging position. In the present instance spring 45 is entirely eliminated as far as the action of the latch 63 is concerned. The spring 62 is the only spring which holds latch 63 in latching position, and as this can be a soft yielding spring, that will be the only resistance to the operation of the latch 63, and latch 63 can thus be softly and yieldingly supported and will accordingly be almost noiseless in operation. This is a desirable feature under many circumstances, for instance if a small child has just been put to sleep in the bedroom and the mother or nurse desires to remain in the room and yet exclude others from entering, she can step over to the door and push the button into dogging position without any click or noise. 'Ihat could not be accomplished with any of the structures shown in my previous applications and to that extent was objectionable, but the structure here disclosed entirely overcomes this objection.

The novel features of this application are the latch 63, the plate 6| supporting the same, and the spring 62 cooperating therewith. 'I'he other novel features are the provision of the auxiliary retractor 4|, the construction of the main `re tractor shown in Fig. 10, the construction of the guide member shown in Fig. 7, and the construction of the housing section shown in Fig. 8 to receive the guide member and retractors. These are the only novel features as all the remaining mechanism has been fully disclosed in other issued patents and copending applications.

Having thus described my invention, what I claim and desire to secure by letters Patent is:-

1. In a lock structure a pair of hub members, a housing forming a part of the hub members and spacing the hub members apart, a guide plate composed of a pair of spaced arms secured substantially centrally of the housing, a latch bolt retractor sli'dably mounted on said arms, said latch bolt retractor being composed of a pair of spaced arms each longitudinally slotted to receive the guide arms, and an end plate connecting the spaced arms of the retractor.

2. In a lock structure a pair of hub members, a housing forming a part of the hub members and spacing the hub members apart, a guide member insertable in the housing, a latch bolt retractor slidably mounted on the guide member, and a cover housing surrounding the first-named housing and securing the guide member and retractor against removal from the rst-named housing. 3. In a lock structure a housing, a main retractor in the housing, a latch bolt, means forming a connection between the main retractor and the latch bolt whereby movement is transmitted to the latch bolt in one direction only, and an auxiliary retractor carried by the main retractor,

said auxiliary retractor adapted to impart movement to the latch bolt in the opposite direction and said auxiliary retractor adapted to impart movement to the main retractor upon depression of the latch bolt.

4. In a lock structure a. housing member comprising a hub having an end plate, a pair of spaced parallel arms carried by said plate, a guide plate insertable between the arms, a pair of spaced lugs at one end 0I each arm to receive one end of the guide plate, and a. pair of lugs on the guide plate insertable in slots formed on opposite ends of the arms to secure that end of the guide plate.

5. In a lock structure a latch bolt retractor guide comprising a pair of spaced arms connected at one end by a cross arm and an outwardly projecting lug formed on the outer surface and on the opposite end of each arm.

' 6. In a lock structure a latch bolt retractor comprising a pair of nat spaced parallel arms connected at one end by a cross arm and said at parallel arms being centrally slotted from end t0 end to receive a guide plate.

7. In a lock structure a latch bolt retractor comprising a pair of at spaced parallel arms connected at one end by a cross arm and said flat parallel arms being centrally slotted from end to end to receive a guide plate, and each at arm being reduced in width for a portion of their length to form shoulders on each side thereof to be engaged by rollback members.

8. In a lock structure a. housing carrying a retractor, a housing carrying a latch bolt, a retractor bar connected at one end with a latch bolt, a pair of lugs on the inner end of the retractor bar, a pair of ngers on the retractor engageable with the lugs to retract the retractor bar and the latch bolt when the retractor is retracted, and an auxiliary retractor insertable in the firstnamed retractor, said auxiliary retractor adapted to be engaged by the inner end of the retractor bar when the latch bolt is depressed so as to impart movement to the auxiliary retractor and the retractor' when the latch bolt is depressed.

WALTER R. SCHLAGE.

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