US2497750A - Lock - Google Patents

Description

Feb. 14, 1950 G. w. WARDWELL, JR 2,497,750

LOCK

2 Sheets-Sheet 1 Filed May 9, 1946 Patented Feb. 14, 1950 UNITED LOCK George W. Wardwell, Jr., Trumbull, Conn., as-

signor to Sargent & Company, New Haven, Conn., a corporation of Connecticut Application May 9, 1946, Serial No. 668,401

8 Claims. '(01. 292-169) This invention relates to door locks, and more particularly to a lockmounted in a cylindrical case designed to be inserted in a, bore in the edge of a door, and which case is adapted to pass through an opening in a cylindrical aligning tube which may be inserted in a bore through the face of the door. i i

In tubular looks, it is more or less customary to employ a bolt case which is inserted in a bore made through the edge of the door and to pass through this case a spindle connected to knobs at the inner and outer facesof the door, which spindle is designed to actuate the bolt-retracting mechanism. As the spindle is aligned by the cylindrical case in which the knobs are carried, it sometimes occurs that this knob case does not stand in the proper position with respect to the bolt mechanism case and, in that event, the spindle will tend to bind. This often is a result of the fact that the knob spindle is not accurately placed at right angles to the-direction of reciprocation of the bolt,but may also be due to other errors in the mounting of parts.

Moreover, it is desirable that a firm and rigid connection be made between the two housings or casings, thatis, between the housing which carries the bolt and bolt-actuating mechanism and the housing which carries the knobs, and it ,is also desirable that the lock be universal in character in that it may be capable of being mounted on a door of either hand and which opens in either direction without any alteration in the position of the parts. That is to say, the lock should be capable of being used with a door of either hand and bevel without removing any parts from the case and changing their position.

One object of the present invention is to provide a door lock of relatively simple construction which may be universally employed regardless of the direction in which the door opens and regardless of whether the door opens from the rightor left-hand side. i

A still further object of the invention is to provide a door lock of relatively simple construction which may be readily installed through cylindrical openings or bores made through the door and into the edge of the door, and the parts of which will be so arranged that'there will be no tendency for them to bind or fail to operate freely.

A still further object of the invention is to provide a door lock of the character described which shall be provided with novel means for dogging one of the knobs against rotation.

Still another object of the invention is to provide a lock of the character described which shall be provided with novel means for guarding or dogging the latch bolt against being forced rearwardly or retracted by a tool inserted between the edge of the door and the door jamb.

. To these and other ends the invention consists in the novel features and combinations of parts to be hereinafter described and claimed.

In the accompanying drawings: Fig. 1 is a sectional view of a door lock embodyi ing my new invention, the lock being shown in mounted position upon a door;

Fig. 2 is a partial sectional view on line 2-! of Fig. 1;

Fig. 3 is a sectional view on line 3-3 of Fig. 1; Figs. 4 and 5 are views similar to Fig. 3, but showing the parts in different positions;

Fig. 6 is a partial sectional view on line 6-6 of Fi 1;

Fig. 7 is a detail view of the latch bolt retractor; :and

Fig. 8 is a detailview of the dogging plunger.

mounted on the inside knob.

To illustrate a preferred embodiment of my invention, I have shown a door lock comprising a tease ll! of cylindrical shape, this case beingadapted to contain the latch bolt and actuating mechanism therefor as will be hereinafter explained, and also being adapted, when inserted within the bore ID in the edge of the door, to pass gojwthrough an opening ll (Fig. 2) in the body portion l2 of a cylindrical aligning tube adapted to be inserted in a bore l3 bored through the face of the door.

A latch bolt is reciprocably mounted in the ,;case Hi, this bolt comprising a beveled head It and a stem l5, this stem passing loosely at its rear end through an opening [6 in a bolt retractor shown in Fig. '7. This retractor comprises a pair oi members of substantially identical shape, each -.*comprising a substantially semi-circular head, which heads together form a disk-like member 11, and a pair of flat stems l8 which project rearwardly from the portion [1 and which are secured together in pairs by spacing pins IS. The stem 15 is provided with a head 20 rearwardly of the part I! of the retractor so that movement of the latter will carry the bolt therewith, although the bolt may move independently of the retractor, the stem 15 sliding through the opening I6.

In order to hold the retractor in extended position, a spring 2! acts between the disk l1 and a stop plate 22 within the lock case. the spring surrounding a post 23 which extends through an opening in the member H. In order to urge the 55 bolt to projected position. a second spring 24 is ing, this yoke being held in place by the screw 26.

Rotatably mounted in transverse openings in the yoke are inner and outer rollback hubs 21 and 28, these hubs carrying rollbacks 29 and 30 and having aligned openingstherein for the reception of the knob spindle, as will be hereinafter explained. These rollbacks 29 and 30 are adapted to engage laterally turned lugs 3| and 32 carried by bridge members 33 which span the retractor stems Is, as shown more especially in Figs. 3 to 5 and '7, so that upon the turning of the rollbacks the retractor will be drawn rearwardly and the latch bolt retracted into the case. The member 33 is. held in place by the laterally turned lugs 34 on the rear end of the stems i8. 7

The rollback hubs are additionally held in place in the openings in the yoke 25 by the members 35 and 35 secured in the rear partof the yoke 25 by the pin 36, which members 35 and 35 also guide the retractor at the end of its travel.

The aligning tube which supports the knob and the spindle mechanism is also of cylindrical shape and comprises a main portion [2 and reduced end portions or sleeves 38 and 39, these sleeves being threaded exteriorly and provided with internal bores of the same size as that of the main portion'l2, which latter bore is atright angles to the opening II which receives the case ii].

The outerknob is shown at-4fl (Fig. 1), this knob having a shank 42 rotatably mounted within the sleeve 39 and retained therein'by' means of a key 43 which enters an annular slot 44 in the knob shank and is disposed in an opening 45 adjacentthe outer edge of the central portion 52 of the aligning tube. This keymay be held in place by a'pin 46 and secures the knob to the aligning tube l2, while at the same time permits free rotation thereof. Mounted in this knob is a key-operated lock shown conventionally at M, the'use of which will be hereinafter explained.

The inner knob is shown at 48, and is likewise provided with a shank 49 rotatably mounted in the sleeve 38 and retained in place by au-shaped spring member 50 embracing the sleeve and havingits 9 legs lying in the annular recess 5|.

Escutcheons o'r roses 52 are mounted at the inner and outer surfaces of the door, these roses being held in place by sleeves 53 threaded upon the sleeves 38 and 39, the roses covering the outer end portions of the aligning tube.

As shown more particularly in Figs. 1 and 2,

a knob spindle 55 is provided which extends through the case of the lock mechanism and engages one of the rollback hubs to rotate the same upon the turning of the inner knob. This spindle isof generally cylindrical shape, but is provided with a squared portion 56 non-rotatably received within a correspondingly shaped opening in the knob shank 49, and is also provided with a squared portion 51 which lies withina similarly shaped opening in the inner rollback hub 21, this spindle being urged toward the knob 48 by the spring 58'which surrounds the spindle and acts against a washer 59 on one end of the spindle.

Adjacent itsother end', the spindle is reduced in size, as shown at 60, and upon this reduced end is rotatably mounted a sleeve 6! having a squared portion 62 disposed in a squared opening in the outer rollback hub 28 and a second squared portion 63 disposed within a similarly shaped opening 64 in the shank of the outer knob so that, when the outer knob is turned, the sleeve 6| will be rotated, and,,if the parts are in the position shown in Fig. 1, will rotate the outer rollback 30 and retract the latch. It may here be-noted that at this side of the case 10 adjacent the outer rollback 30, there is provided a square opening 65 to receive the squared portion 52 of the sleeve 6|. There is also provided at the other side of case 10 a similarly placed square opening 65 which will receive the squared portion 62 of the sleeve 6| if it is desired to turn the latch bolt over for a reverse bevel application. The reduced end 60 of the spindle 55 extends through the sleeve 6| and is connected with the key-operated lock 41 in the outer knob, so that the spindle55 may be rotated by this look when the sleeve 6| and outer knob are dogged against rotation. The connection between the reduced end of'the spindle and the lock is a lost motion connection and comprises a pin 10! secured to the key barrel 102, which pin is received in a transverse slot I03 in a sleeve I04 rotatably mounted in the outer knob shank. The end of this sleeve is provided with a non-circular opening I05 which non-rotatably receives the complementary shaped end of the spindle portion 60. The slot I83 extends substantially about the sleeve I04, thus giving ample room for the required rotation-of the inside knob to retract the latch bolt without rotation of the key barrel or the outside knob to which the key barrel is normally locked. With the parts shown in the unlocked position in'Fig. 1, either of the knobs may be rotated independently and, through the squared portion 51' on the spindle 55 or the squared portion 62 on the sleeve GI as the case may be, will actuate one of therollbacks to retract the latch;

It is desired, however, that the outside knob be dogged from the inside so that a person may the plunger is moved inwardly. In order to hold the spindle in its inward or dogging position against the action of' thespring 58, the plunger is provided with an 'L-shaped slot I2 (Fig. 8) in which is partially received'a ball 13 contained in a hole in the knob shank 49. When the plunger 10 is moved inwardly, it may be rotated through a slight turn until the ball lies in the transverse portion of the opening 12 which will prevent the return by the spring 58 ofthe plunger and spindle 55.

When the spindle 55 is thus moved inwardly by the plunger from the position shown in Fig. 1

to the position shown'in Fig. 2, it will be noted that the squared portion'51 still engages the rollback 27 so that this rollback may still be operated [by the inner knob to retract the latch" bolts.

However, it will be seen that the squared portion 62 on the sleeve 6| now lies within the squared opening 65 in the-case l so that the sleeve 6| is prevented from rotation. As this sleeve is non-rotatably secured in'the outer knob shank 42, the outer knob will be dogged against turning. In this position of the parts, the latch bolt may only be retracted from the outside by use of the proper key in the lock 41 as the spindle 55 will still be free to turn within the sleeve 6|. The. spindle may be restored to its original position by rotating the plunger 10 until the ball 13 lies within the longitudinal portion of theslot 12; The spring 58 will then move the spindle 55 outwardly.

vIt is also desirable in looks of this kind to provide guarding or dogging means to prevent the latch bolt being forced back by a tool inserted between the door and the door jamb. As shown more especially in Figs. 3 to 5, I have provided a dogging or guard lever I pivoted to the retractor stem l8 upon the pin l8, this lever being provided with a shoulder 16 adapted to engage the stop plate 22 within the lock case. At its forward end, this lever is provided with a laterally projecting nose 11 adapted to be engaged by the cross head 18 of a guard bolt 19 which projects from the lock case In at the trailing edge of the latch bolt [4 and which is provided with a stem 80 to which the cross head 18 is secured. The stem 80 projects through an opening in the mem- 'ber I1, and between this member and the guard bolt is disposed a spring 8| which tends to hold the guard bolt projected. The lever 15 is urged in a clockwise direction about its pivot l9 by the spring 82.

When the door is open the parts are in the position shown in Fig. 3 in which both latch bolt and guard bolt are protracted, and the cross head 18 by engagement with the nose 1! of the dogging lever 15 holds said nose 11 out of engagement with the head 20 of the bolt stem to permit the bolt to be cammed rearwardly into the case by engagement with the strike plate on the door jamb. Retraction of the latch bolt also retracts the guard bolt, but when the door reaches its final closed position and the latch bolt springs into the opening in the strike plate, the guard bolt will be held in its rearward position and the parts will be in the position shown in Fig. 4 where the nose [1 of the lever [5 lies behind the head 20.

If, in this position of the parts, pressure is exerted upon the end of the latch bolt tending to retract the same, the head 20 will strike the nose Ti and tend to move the lever 15 in a clockwise direction about its pivot l9, which movement, however, will be prevented by engagement of the shoulder 16 with the stop plate 22 so that the latch bolt will be dogged against retraction by pressure upon the end thereof. However, if, in this position of the parts, one of the knobs is turned to retract the latch bolt by means of the retractor l1, the lever 15, being pivoted on the retractor, will be moved rearwardly, and the engagement of the shoulder 16 with the stop plate 22 will move the lever 15 in a counter-clockwise direction against the action of its spring 82, and the shoulder 16 will be released from the stop plate 22, as shown in Fig. 5. In other words, when force is applied to the nose 11 of the lever 15 it tends to move it in a clockwise direction and engage the shoulder 16 with the stop plate 22, while if force is applied through the pin l9, when the retractor is moved rearwardly in the 6.. case, the eifect will be to move the lever 15 in a counter-clockwise direction and cause the shoulder 16 to disengage the stop plate 22 and thus permit retraction of the latch bolt.

In installing the lock, the aligning tube containing the outer knob mechanism is inserted through the opening [3 in the door. The latch bolt and retracting mechanism are contained in the case In, and this case with its contained mechanism is inserted through the opening It! in the edge of the door and through the opening II in the portion 12 of the aligning tube. When this hasbeen done, the tube and case are secured rigidly together by the pin 83 which is inserted through openings in the portion l2 of the aligning tube provided therefor and through registering openings in th lock mechanism case Ill. The inner knob mechanism carrying the inner rose 52 may now be inserted into the aligning tube together with the s indle 55 and the sleeve 6!. After the retaining member 50 is put into place to hold the inside knob against removal, the sleeve 53 may be screwed up to hold the rose 52 against the door. If it is desired to mount the lock on a door of the other hand than that shown in the drawings, it is only necessary to rotate the case [U about the shank of the outer knob before the inner knob is connected thereto, this 'otation being possible by reason of the fact that slot 44 is annular and extends entirely around the knob shank 42. Thus the lock is universally applicable to doors of either hand and is also applicable to doors of regular or reverse bevel due to the provision of the identical square openings and 65' at each side of the case III which are adapted to receive the squared portion 62 of the sleeve 8! so as to permit reversal of the lock case about its axis relatively to the cylindrical aligning tube.

While I have shown and described a preferred embodiment of my invention, it will be understood that it is not to be limited to the details shown, but is capable of modification and variation'within the spirit of the invention and within the scope of the claims.

What I claim is:

1. A door lock comprising a case, a bolt and bolt-operating mechanism carried thereby, said mechanism including a retractor, said bolt being depressible relatively to the retractor, a dogging member pivotally mounted on the retractor and arranged to stand in the path of the bolt within the case when the door is in closed position to prevent retraction of the bolt by pressure on the outer end thereof, means fixed with respect to the case to engage said dogging member and prevent movement thereof in one direction about its pivot, and a guard bolt movably mounted in the case to engage and control the position of said member.

2. A door lock comprising a case, a bolt and bolt-operating mechanism carried thereby, said mechanism including a retractor, said bolt being depressible relatively to the retractor, a dogging member pivoted to the retractor and arranged to stand in the path of the bolt within the case when the door is in closed position, means fixed with respect to the case to engage a part of saiddogging member, said means engaging said dogging member on the same side of its pivot as the point of engagement of the bolt with the dogging member, whereby pressure by the bolt upon the dogging member causes said means to hold said dogging member against movement and thereby hold the bolt against retraction.

S. A door. lock comprising a-case, a bolt and.

depressible relatively to the retractor, a doggingv member movably-mounted on the retractor and arranged to stand in the path of the bolt within the case when the door is in closed position to prevent retraction of the bolt by pressure on' the outer end thereof, and a guard bo-lt movably mounted inthe case to engage andcontrol the position of said dogging member.

4. A door lock comprising a case, a bolt and bolt-operating mechanism carried thereby, said mechanism including a retractor, said bolt being depressible relatively to the retractor, a dogging member movably mounted on the retractor and arranged to stand in the path of the bolt within the case when the door is in closed position to prevent retraction of the bolt by pressure on the outer end thereof, a'guard bolt movably mounted in the case and having a part thereon to engage and move said dogging member to inoperative position when the guard bolt is in protracted position.

5. A door lock comprising a case, a bolt and bolt-operating mechanism carried thereby, said mechanism including a retractor, said bolt being depressible relatively to the retractor, a dogging lever pivoted to the retractor and having a nose portion standing in the path of the bolt within the case to prevent retraction of the latter by pressure on the outer end thereof, said dogging lever having a projecting shoulder thereon between the pivot point and said nose portion, and stop means in the case to engage said shoulder and'hold the dogging lever against movement.

'6. A- door lock comprising a case, a bolt and bolt-operating mechanism carried thereby, said mechanism including a retractor, said bolt being 'depressible relatively to the retractor, a dogging lever pivoted to the retractor and having a nose portion standing in the path of the bolt within the case to prevent retraction of the latter by pressure on the outer end thereof, said dogging lever having a projecting shoulder thereon, stop I means in the case to engage said shoulder and hold the dogging lever against movement, the pressure of the bolt on said nose :portion .of the dogging lever tending to move said lever about its pivot in a direction to engage said means, and a bolt reciprocably mounted in the case-and havingca portion torengage thenose of said dogging lever and move the latter to inoperative position.

7. A door-lock comprising a case, a bolt and bolt-operating mechanism carried thereby, said mechanismincluding a retractor, said bolt being dopressible relatively to the retractor, a dogging lever pivoted'to the retractor and having a nose portion standing in the path of the bolt within the case to prevent retraction of the latter by pressure on the outer end thereof, said dogging lever having a projecting shoulder thereon, stop means in the case to engage said shoulder and hold the dogging lever against movement, a spring normally urging said dogging lever to position to engage said bolt, and a spring-pressed guard bolt controlling the position of said dogging lever.

8. A door lock comprising a case, a bolt and bolt-operating mechanism carried thereby, said mechanism including a retractor, said bolt being depressiblerelatively to the retractor, a dogging lever pivoted to the retractor and having a nose portion standing in the path of the bolt within the case to prevent retraction of the latter by pressure on the outer end thereof, said dogging lever having a projecting shoulder thereon, stop means in the case to engage said shoulder and hold the dogging lever against movement, said shoulder being cammed out of engagement with said stop means when the retractor is moved rearwardly to retract the bolt, and a guard bolt reciprocably mounted in the case adjacent said first-named bolt and having a. crosshead thereon and said crosshead being adapted to engage the nose-portion of the dogging lever and move it to inoperative position when the guard bolt is protracted.

GEORGE. W. WARDWELL, JR.

REFERENCES CITED The following references are of record in the file of this patent:

v UNITED STATES PATENTS Number

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