US916610A - Door-lock. - Google Patents

Description

A. SGHOBNMAN.

DOOR LOUK.

APPLICATION FILED MAB. g, 1907.

Patented Mar. 3o, 1909.

A. SCHOENMAN.

DOOR LOOK. APPLICATION FILED MAIL-2, 1907.

Patented Ma.r.30,'1909.

3 SHEETS-SHEET 2.

\ all ,(Rmlalr- Namur: rs wAsmNamN. n. c.

A. SCHOENMAN.

. DOOR LOCK.

APPLIoATIoN FILED MAR. 2. 1907.

Patented Mar. 30, 1909,

3 SHEETS-SHEET 3.

Suva/nto@ i alicia/w1# smNaro petus or movement.

UNITED s'riirns PATENT onirica ARNOLD SOHOENMAN, OF DENVER, COLORADO, ASSIGNOR TO READING HARDWARE COM- PANY, OF READING, PENNSYLVANIA, A CORPORATION OF PENNSYLVANIA.

DOOR-LOCK.

Specication of Letters Patent.

Patented March 30, 1909.

Application filed March 2, 1907. Serial No. 60,287.

To all whom it may concern.'

Be it known that I, ARNOLD SGHOENMAN, a subject of Roumania, residing in the city and county of Denver and State of Colorado, have invented certain new and useful Improvements in Door-Locks; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the figures of reference marked thereon, which form a part of this specification. f

door locks, my object being to provide a .novel lock construction whereby either one or both knobs may be locked against turning by virtue of an adjustable knob-controlling device connected with the lock on the inside.

This device is also capable of such adjustment that while neither of the knobs is allowed to turn, the bolt cannot be withdrawn by the use of a key. Each knob is connected with an independent sleeve and each sleeve with a bolt-actuating device whereby when the aforesaid knob-controlling device is properly regulated, the bolt may be withdrawn by turning either knob. The lock is also provided with a spindle located within a third sleeve, adapted to be rotatedby the key without turning either knob and this spindle is connected with a third actuating device whereby the bolt may be withdrawn. The three bolt-operating devices are yprovided with alined slots located in the path of a blade forming a part of kthe knob-controlling' mechanism. One of the bolt-actuating devices is somewhat longer than the other two whereby the locking blade by virtue of one movement enters the slot of the said device and does not enter the slot of the other two bolt-operating devices until the blade is given a further imi It thus results that when the said blade is in engagement with the slots of all of the bolt-operating' devices,

' the bolt is incapable of being withdrawn either by the turning of either knob or by the use of a key.

Another novel feature of my improvement, consists of a series of endwise adjustable tumblers located within the sleeve of the outer knob and so arranged that these tumblers must be actuated by the end thrust of the key to bring slots or recesses of the various tumblers into register to permit the turning' of the key with the tumblers, in order to withdraw the bolt.

Havingbriefly outlined my improved construction, l will proceed to describe the same in detail reference being made to the accompanying drawing in which is illustrated an embodiment thereof.

In this drawing', Figure 1 is a central section taken through 'my improved lock, cutting both knobs. Fig. 2 is a section taken on the line 2-2 Fig'.- 1. Fig'. 3 is a detail view illustrating the bolt. Fig. -t is a view looking at right angles to Figi'. 3 or in the direction of arrow 4 F ig. 3. Fig'. 5 is a view of the knob-controlling' mechanism. F 6 is a view of the same mechanism shown in section. Fig'. 7 shows two views oll a pawl forming` part of the lock mechanism. Fig'. 8 shows two views ol a spacing plate. Fig'. 9 is a plate forming a part of the bolt-re'leasingI mechanism. Fig'. 1() is an edge view of the same. Fig'. 11 shows one of the door knobs with its bolt-actuating attachment. Fig'. 12 is an end view of the same without showing' the knob in projection. Fig. 13 is a view of the other knob provided also with its boltactuating' device and shown in connection with the key-operated spindle. Fig'. 14 is a view of the third sleeve or that inclosing the key-operated spindle. In this view the sleeve is equipped with its bolt-operating device. Fig. is an end view ol the same. Fig'. 16 is a view looking at the spindle end of the construction shown in Fig. 13. Figs. 17 and 18 illustrate dogs or pawls which when in the assembled relation normally prevent the withdrawal of the bolt.

lhe same reference characters indicate the same parts in all the views.

Let the numeral 5 designate the door moi'- tised as shown at 6 to receive the lock mechanism. The said mechanism is concealed on the inside by a plate 7 provided with a part 8 extending' at right angles to the part 7 and provided with an opening; to receive the locking; extremity 1 0 ofthe bolt 9, the last named numeral designating the bolt in its entirety.

The face plate 7 is further provided with a i casing' plate 12 extending at right angles to the body of the plate and closing the mortise at the right (see Fig. l). The lock mechanism is further inclosed by a casing part 13 provided with an oi'lset 1e constituting an enlargement to allow the locking part ofthe bolt additional room for retraction. The face plates 6 and 7 are applied to the opposite sides of the door near the edge thereof, whereby the bolt 9 when shot or projected is adapted to engage a recess 15 formed in the door jam 16. To this jam is attached a strikine1 plate 17 upon the inner edge of which is mounted a roller 18 adapted to engage the locking extremity of the bolt to diminish the friction thereon as the bolt is moved inwardly during the closing action of the door.

The face plate 7 or the inner plate is provided with an opening surrounded by a collar 19, through which opening the sleeve 20 of the knob 21 passes. To the inner extremity of this sleeve is attached a bolt-operating device 22 by fastening devices 23 as shown by dotted lines in Fig. 12. This bolt-actuating device is provided with forwardly located horns 24,' adapted to engage the lower parts 25 of pins 26, secured to the rear extremity of the bolt. rhis bolt-actuating device is located below the rearjpart of the bolt, and.

between the two pins 26. The horns are normally in close proximity to these pins whereby the turning of a knob in either direction serves to withdraw the bolt from the locking position. Above the bolt-actuating device 22 is located a similar bolt-actuating device 27 which is secured to a sleeve l28 surrounded by the sleeve 20. VAabove the boltactuating device 27, the sleeve 28 is provided with a plug 29 having an opening 30 angular in cross section, preferably square to receive `a spindle 31 of corresponding shape, whose upper extremity is provided with a disk 32 having a slotted lug 33 on its upper surface, the said lug being adapted to receive the inner extremity 34 of a tumbler '35 centrally located with reference to a series of platelike tumblers inclosed in a casing 36 and hereinafter more fully described. Between the disk 32 and the upper extremity of the sleeve 28, is located a ring or washer 37.

l ff The outer plate 6 of the lock is provided with an opening surrounded by a collar 38, through which passes the outer sleeve 39 to which is secured a knob 4() whose outer end is centrally provided with a key slot 41 adapted to receive a key 42 for operating Vthe series of tumblers carried by the casing or holder 36. T he inner extremity of the sleeve 39, surrounds the corresponding extremity of the sleeve 28. To the inner extremity of the sleeve 39 is exteriorly secured abolt-operating device 43 0f substantially the same construction as the operating devices 22 and 27 to which reference-has heretofore been made. This operating device 43 is somewhat longer than the corresponding devices 22 and 27. Each of the bolt-actuating devices, however, has horns 24 adapted to act on the pins 26 of the bolt 9 Hence the turning of either knob as well as the turning of the spindle 31, will ' ing devices 22 and 27 are connected. The forward extremity of each bolt-operating device is provided with a slot 44. rl`he slotted extremity of the boltoperating device 43 extends forwardly'of the corresponding extremities of the bolt-actuat- The lock mechanism is provided with an abutment or blade 45 slidably mounted'within the locking casing and adapted to enter the slots 44 of all of the bolt-actuatingdevices, when the abutment is moved rearwardly to its limit of movement. Provision, however, is made for imparting to this abutment a step by step movement in opposite directions. W hen the abutment is given the first rearward step, it entersthe slot 44 of the device 43 and'locks the said device and consequently the outer knob from turning. During vthis time, however, the inner knob together with the sleeve 20, as well as the sleeve 28 is free to rotate for the purpose of 90 withdrawing the bolt. However, if the `abutment '45 is caused to make another rearward step, it engages the slots 44 of the bolt-actuating devices 22 and 27, thus locking the three bolt-actuating devices against movement together with the `knobs and the three sleeves. 1n other words when this is done it is impossible to withdraw the bolt by the use of either knob or the key. lt will be understood from what has `heretofore been explained that the bolt-actuating device connected with the sleeve 28 can only be actuated through the instrumentality of the key acting on the tumblers by causing the central tumbler 35 to enter the slotted lug of the spindle 31.

l will now proceed'to describe the means for imparting the step by step movement to the abutment 45. This abutment as shown in the drawing is formed integral with a plate 46 slidably mounted on the inner surface of thefface plate 7 and extending at right angles to the body 0f the abutment, the latter being centrally located at the rear edge of the said plate. The plate 46 is provided with a reictangular slot 47 (see Figs. 5 and 6), the plate on one side of the slot being provided with a number -of teeth 48. Above the forward ortion of the plate 46 and mounted to side transversely thereon, is a plate 49 having an opening 50 registering with a portion of the slot 47, and an opening 51 having teeth 52 along one side thereof. The plate 46 is located between two pins'53 secured to the face plate 7.

Projecting exteriorlyfrom the face plate 7 is afsmall knob 54 made fast to a stem 55 of a cam 56 provided with lugs 57 projecting from opposite sides thereof, the 'said lugs performing the cam function. This cam protrudes through the slot 47 and the openings 50 and is of a thickness equal to that of both plates 46 and 49. The plate 49 is provided with a pin 58 with which is connected one extremity of a spring 59 whose opposite extremity engages a stationary pin 53 in such a manner that the plate 49 is normally thrust toward the right or in a direction to cause the recesses 60 between the teeth 52 of the plate 49, to engage a lug 61 fast on the plate 46 and protruding through the opening 51 of the plate 49. The lugs 57 of the cam 56 arcadapted to engage the teeth 48 of the plate 46, and cause the plate 46 to travel back and forth between the pins 53, the said travel being suflicient to cause the abutment 45 if moved rearwardly, to engage the slots 44 of the bolt-operating devices 22, 27 and 43. rlhe plate 46 and its abutment as illustrated in the drawing is adapted to move two steps in each direction. The sprin 59 normally holds the plate 49 as far towar the right referring to Fig. 5 as the cam 56 will permit. New if we assume that the plate 46 and the abutment together with the plate 49 are in the relative positions shown in full lines in Fig. 5, it will be understood that the plate 46 is at its rearward limit of movement and the abutment in osition to engage all of the bolt-operating evices and lock them against movement. N ow if it is desired to shift the abutment forwardly, the cam by the use of the knob 54 will be turned in the direction indicated by the arrow in Fig. 5. As it makes the first half turn, one of the lugs 57 engages a tooth 48 of the plate 46, and moves the said plate forwardly one step and at the same time moves the plate 49 toward the left, sufficiently to disengage a recess 60 of the plate 49 from the pin 61 of the plate 46 and cause the said pin together with the plate 46 to travel forwardly one step. At the end of this half turn of the cam, the s ring 59 will cause a forwardly-located notc 60 of the plate 49 to engage the pin 61. Then if the cam 56 is O'iven another' half turn, the other lug 57 will engage another tooth of the plate 46 and cause the latter to travel another ste forwardly, at the same time shifting the pllate 49 toward the left in order to release the pin 61 from its engaging slot 60; and at the end of the last half turn of the cam, another notch. 60 of the plate 49`will be made to engage the pin 61. It will thus be seen that as the step by step forward and back movement is imparted to the abutment, the plate upon which it is mounted is locked against accidental displacement at the end of each step, by virtue of the engagement of the pin 61 with a notch of the plate 49.

The bolt 9 is normally locked against withdrawal by means of two pawls 62 fulerumed on pins 63 mounted on the face plate 7. The rear extremities of these pawls are informed on the forward extremity of a slide 66 provided with slots 67 through which the pins 26 of the bolt pass, whereby the slide forms a guide for the bolt. The two pawls 62 are held in such position that their forward extremities engage the bolt to prevent its withdrawal, while their rear extremities engage the pins 65 in such a manner, that as the slide 66 is moved rearwardly, the pawls are turned on the fulcrum pins 63 to cause their forward extremities to move out of the path of the extremity 1() of the bolt to permit the withdrawal of the latter. This slide 66 is provided at its rear extremity with projections 68 extending both upwardly and downwardly therefrom or at right angles to the body of the slide.

In the rear of each bolt-operating device, is located a air of pawls or dogs 69, these pawls being s iown in detail in Fig. 7. They have eyes 7() which engage pins 71 fast on the face plate 7. These pawls project inwardly to engagement with the projections 68 of the slide 66 occupying a position immediately forward thereof. Immediately in front of the pawls, are located the. rear extremities 72 of the bolt-actuating devices, each of these extremities having a lateral projection 73 which acts on one of the pawls 69 to cause the latter to move the projections 68 together with the slide 66 toward the rear, when a bolt-actuating device is operated. As this movement is imparted to the said slide, the pins 65 thereon act on the rear extremities of the pawls 62 and throw the latter' inwardly while their op osite extremities are thrown. outward y. This occurs in time to release the bolt and allow the latter to be withdrawn by virtue of the action of the bolt-operating devices as heretofore explained. lt will be understood that by reason of the inclined surfaces of the dogs 62, and by virtue of the further fact that the forward arms of the pawls 62 are much longer than the rearward arms upon which the pins 65 act, the outward movement of the forward extremities of the said pawls is very rapid. Hence the rearward movement of the bolt in each instance is practically simultaneous with the outward movement of the forward arms of the locking pawls 62. Connected with a pin 75 on the rear extremity of the slide 66, is a spring having extremities 76 which engage the rear plate 12 of the lock casing and have a tendency to normally thrust the plate 66 forwardly, whereby as soon as a bolt-actuating device is released and caused to return to its normal position, the slide will move for wardly to its normal position or so that its ins 65 shall occupy the position shown in Fig. 2.

The bolt is normally held in the forward position by two coil springs 77 which are clined as shown at 64 and engage pins 65 i connected at one extremity with the plate 8 of the-casing on each side ofthe bolt, while tieir opposite or rear extremities are respectively connected with laterally `projecting pins 78 formed on opposite sides of the bolt.-

Hence after the bolt has been withdrawn by the operation of either bolt-actuating device, the bolt together with the said device is returned to its normal position by virtue of the recoil of the spring 77.

lt must be undertsood that the pawls'62 are only allowed to occupy such a position as to prevent the withdrawal of the bolt, when the latter is in the locking position or latched position. When the door is open, a small plate 79 which rests upon the bolt, occupying a transverse position, is normally drawn forwardly by a coil spring 8O whereby it is caused to spread the forward arms of the pawls 62 and allow the latch bolt to move inwardly as it engages the door jamb during the closing operation. As the bolt moves inwardly, the small plate 7 9 together with. a

tongue 81 slidablv mounted in a slot 82 l formed in the bolt and with which the said plate is connected, has a corresponding movement. The said tongue normally has a tendency to move outwardly and occupy a position flush with the forward or locking extremity 10 of the bolt. The opening` 15 formed in the striking plate 17 to allow the latch bolt to enter, is so constructed that it prevents the vforward movement of the tongue Sl, (see Fig. l),whereby the spreading plate 79 occupies the rearward position shown in Fig. 2, and allows the forward extremities of the pawls62 to occupy a position in the path of the said bolt when making its rearward movement. Hence when the bolt is in place it will be impossible to force it rearwardly by an instrument from the outside since the pawls form a positive lock against inward movement unless the bolt is actuated in one of the. ways heretofore explained, whereby the slide 66 is simultaneously actuated to cause the forward extremities of the pawl 62 to move away from each other.

Attention is called to the fact that rthe slide 66 is provided with a forward slot 83 to permit the movement of the abutment 45. The bolt is also provided with a slot 84 for the same purpose.

The forward extremity of the slide 66 is notched as shown at S5 to make room for pins 86 which are fast on the face plate 7 and serve to hold the slide securely in place during the operation as heretofore explained.

From the foregoing description the use and operation of my improved lock will be readily understood. Assuming that the parts are assembled as shown in Fig. l of the drawing, and assuming also that the abutment 45 is in the position shown in said view, the bolt may be withdrawn by the use of either knob or by the operation of the key all as heretofore exgaat plained. -'N ow if it is desired to adjust the abutment to prevent the turning of the outside knob or that designated 40, the adjusting cam 56 is turned to move the abutment one step toward the rear which is accomplished by the engagement of one of the lugs 57 of the cam with a tooth 48 of the plate 46 all as heretofore explained. This rearward step of the abutment causes the latter to enter the slot 44 of the bolt-operating device 43, thus preventing the turning of the last named device and consequently of the knob since the bolt-operating device is connected with the sleeve of the knob. Willen thisadjustinent is made, however, the bolt may still be withdrawn by turning the knob 21 and also by the use of the key. New if the vabutment be advanced another step toward the rear by the operation of the cam 56 and the diminutive knob 54 of the adjusting mechanism, the said abutment will be caused to enter the slots 44 of the three bolt-operating devices, thus making it impossible to withdraw the bolt by the use of the key or either knob.

From what has heretofore been. explained it will be understood that when the door is closed, the pawl separating device or plate 79 will be held in the position shown in Fig. 2, allowing the forward extremity of the pawls 62 to occupy the position in the path of the locking extremity l() of the bolt, whereby the latter can only be withdrawn by the turning oi' one of the knobs or by the use of the key, in which event, one of the bolt-operating devices is actuated, and the slide 66 moved toward the rear as heretofore explained'whereby its pins 65 will act on the rear extremities of-the pawls 62 and cause their forward extremities to move outwardly, thus permitting the bolt to be retracted all as heretofore explainedlin detail.

The abutment 45 is provided with a recess 84A open on its rear edge to allow it to move rearwardly without engaging the web 84B of the'bolt.

Having thus described my invention, what l claim is:

1. A door lock comprising a casing, a latch bolt, inner and outer knobs, independent bolt-operating devices, sleeves connecting the said devices with the knobs, a third sleeve independent of the knobs located inside of the inner knob sleeve, a bolt-operatdevice attached to the last named sleeve, a key for operating the third sleeve to withdraw the bolt without turning either knob,

and means for locking the said bolt-operating devices against movement, substantially as described.

2. ln a lock comprising a casing, a latch bolt, inner and outer knobs connected in operative relation with the bolt, a sleeve independent of the knobs located inside of the inner knob sleeve, a bolt-operating device mally occupying a position in the rear of the attached to the said sleeve, a key for operating the said sleeve to withdraw the bolt without turning either knob, and an abutment adapted to engage the said bolt-operating device and loch the latter and its sleeve against movement, substantially as described.

3. A lock provided with a latch bolt, a plurality of bolt-operating devices rovided with registering slots, and an a mtment ada ted to engage the slots of said devices for ocking the same against turning, substantially as described.

4. In a lock, the combination with a casing, and a bolt, of a number of bolt-actuating devices, a pair of spring-actuated pawls norbolt to prevent the withdrawal of the same, and a slide having pins adapted to engage the pawls and connected to be operate( simultaneouslywith the o )eration of each boltoperating device, where y the said pawls are actuated to allow the bolt to move inwardly.

5. In a lock, the combination with a casing and a bolt, of a number of bolt-actuating devices, a pair of spring-actuated pawls normally occupying a position in the rear of the bolt to prevent the withdrawal of the same, and a slide connected to be operated simultaneously with the operation of each boltoperating device, whereby the said pawls are actuated to allow the bolt to move inwardly.

6. In a lock, the combination with a casing and a bolt, of a pair of spring-actuated pawls normally occu ying a position in the path of the bolt, an a pawl separating device normally holding the pawls out of the path of the rearward movement of the bolt, l

the separating device having a part ada ted to engage the j amb of the door and hol the pawl-separating device out of engagement with the pawls whereby the latter are allowed to assume the normal position.

7. In a lock, the combination with a casing and a bolt, of a pair of spring-actuated pawls normally occupying a position in the path of the bolt during its rearward movement, a slide having pins adapted to engage the pawls, a boltoperating device arranged when actuated to move the slide rearwardly whereby the pawls are actuated and caused to move out of the path of the bolt, substantially as described.

S. In a lock, the combination with a casing and a bolt, of a pair of pawls normally occupying a position in the rear of the bolt to )revent the withdrawal of the latter, a number of bolt-actuating devices, a slide connected in operative relation with the pawls, a second pair of pawls located in the rear of each bolt-operating device, the said slide having a projection adapted to be engaged by each pair oi the last named pawls, the pawls in turn being actuated by the boltoperating devices, whereby the iirst named pawls are operated to permit the withdrawal of the bolt simultaneously with the operation of any bolt-operating device, substantially as described.

In testimony whereof I affix my signature in presence of two witnesses.

ARNOLD SCIIOENMAN.

IVitnesses:

DEN. NELSON, MAY GAwLEY.

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