US1462828A

US1462828A - Lock

Info

Publication number: US1462828A
Authority: US
Inventors: Oscar C Rixson
Original assignee: OSCAR C RIXSON CO
Current assignee: OSCAR C RIXSON CO
Priority date: 1922-03-28
Filing date: 1922-03-28
Publication date: 1923-07-24
Anticipated expiration: 1940-07-24

Description

July 24, 1923.

o. c. mxso LOCK Filed March 28. 1922 s Sheets-Sheet 1 July 24,1923. v 1,462,828

C. RIXSON LOCK Filed March 28, 1922 5 Shee t's-Sheet 2 lll-llllllll I pugll awwent-oz 551 elm/W 5 Patented an 2e, iaa.

i: 1 as 7 means PATENT @FFHQCE.

OSCAR C. BKSON, OF NEW ROCHELLE, NEW YORK, ASSIGNOR T T OSCAR C.

RIXSON (30., A CORPORATION OF ILLINOIS.

LOCK.

Application filed March 28, 1922. Serial No. 547,387.

T 0 all whom it may concern-l Be it known that I, OSCAR C. RIxsoN, a citizen of the United States, residing at New Rochelle. in the county of I'Vestchester and State of New York, have invented certain new and useful Improvements in Locks, of which the following is a full, clear, and exact description.

In locks as heretofore constructed, it is possible after inserting the-key to turn it in the wrong direction substantially as far as it is turned in the right direction before engaging the bolt throwing element. Consequently, if one is not sure which way the key should be turned, annoyance and confu sion are apt to result, particularly if the bolt does not move easily.

An object of my invention is to prevent the possibility of turning the key the wrong way after inserting it in the lock, and I do this by providing a movable stop which will project into the path of the key or keyoperated element, such as a roll-back, on one side or the other of its initial position ac cording to the position of the bolt, and which is reversed as to its position by the movement of the bolt.

A convenient construction for this purpose is a rock member pivoted immediately above the end of the key or roll-back and having two stop elements" on either side of the initial position of the key or roll-back and arranged to be rocked by the movement of the bolt and thereby bring the two stop elements alternately into the path of the key or roll-back.

While the rock member may be carried either by the bolt or on the case, it willusually be preferable to pivot it on the case and operate it by a lug or boss on the bolt which may engage suitable cam faces provided on the rock member.

It sometimes happens that the bolt is left in a midway positlon, particularly if the mechanism on the inner face of the door for operating the lock is a hand knob instead of a key. mechanism. In such an event, it is not possible to give the key a complete rotation, but after operating the bolt the key must be returned in a reverse direction to its initial position in order to extract the key. To take care of such a contingency and prevent the key or roll-back from becoming trapped liy the stop which is then in its return path, make the stop yieldable and shaped so that it will be cammed out of the way by thereturn movement of the key or roll-back. In other words, the stop is a positive stop for one rotative direction of the key and is yicldable to permit the key to pass in the other direction.

Another object of my invention is to provide a lock construction which affords the greatest protection against unauthorized tampering, and is virtually burglar-proof. When my invention is embodied in a rim lock, for example, that is, a lock set in or secured against the face of the door as distinguished from a mortise lock, and cooperating with a suitable strike on the door jamb, I extend the outer wall of the lock case so as to cover the strike, and provide a raised part on the extension which is received within a deep recess in the strike, the bolt assing through a hole in the wall of the strike and preferably also extending into the raised part. In this way the lock case is absolutely held against rotating about the strike when the case is unscrewed from the door.

Other features of construction which are comprehended within my invention will appear from the following description of the construction shown in the accompanying drawings, which is presented for the purpose of illustrating one way in which my invention may be embodied, it being understood that my invention is not limited thereto but only as pointed out in the appended claims: Fig. 1 is a plan view or" the lock with the portion of the door and j'amb shown in section;

Fig. 2 is a sectional elevation of the same on the irregular line 22 of Fig. 1;

Fig. 3 is a transverse section on line 3-3 of Fig. 2;

Fig. 4 is a transverse section through the strike, on line 4-4 of Fig. 1;

F Fig. 5 is a sectional plan on line 5-5 of Fig. 6 is an inside view of the lock case and contained parts, the cover plate on the inner face being removed;

Fig. 7 is a longitudinal sectional elevation of the lock case and contained parts, on line 7 -7 of Fig. 5;

Fig. 8 is an inner face view of a portion of the cover plate for the lock case;

Fig. 9 is an elevation of one end of the lock case; Y

Figs. 10 and 11 are schematic views, showing the rear end of the lock-bolt and asso ciated parts and illustrating the action of the key-operated roll-back in different positions;

Fig. 12 is a perspective view of the strike.

The lock construction illustrated is arim dead lock. The lock case 1 is secured by screws 2 against the face of the door 3 in position to cooperate with the pin-tumbler cyl cinder lock 4 disposed in a transverse hole in the door in the usual wa The head or escutcheon of the cylinder 18 surrounded by a cylinder ring 5 which bears around the opening against the outer face of the door,

while a cylinder back plate 6 covers the inner end of the openin and bears against that face of the door. crews 7 connect the back plate 6 to the cylinder which is thereby made adjustable as to its distance from the escutcheon 4 to compensate for various thicknesses of doors. The case 1 is of the usual rectangular shape and is composed-of bronze or other suitable material and is closed on its inner side by a removablecover I late 8 secured by screws 9 to suitable lugs integral with the case. In order to lock the cylinder a ainst rotation, the back plate 6 is provide with two outwardly turned lugs 10 which extend into holes 11 in the cover plate 8.

On the inner face of the cover plate 8 is a roll-back 12 which is provided with a hub portion bearing in the cover plate 8. This hub portion has a narrow slot 13, and a flat tongue 14 is carried b the usual eccentric key plug of the cylin er lock and projects through an opening in the back plate 6 into the slot 13. In this way the roll-back 12 is caused to rotate by the rotation of the key plug.

On the bottom face of the lock case 1 is another roll-back 15 which has its axis substantially aligned with that of the roll-back 12 and bears in the outer wall of the lock case. In the construction shown this rollback 15 is operated by the hand knob 16, but it will be understood that it may be key operated, if desired.

The lock mechanism is of the dead lock type. A bolt mechanism 17 which is arranged to slide in the lock case, has two locking elements 18 that project through the end wall of the lock case when the bolt is thrown, and are withdrawn within the case when the bolt is retracted.

The outer face of the bolt 17 has a lever 19 pivoted thereon near the front end of the part of the bolt mechanism which is at all times contained within the case. This lever 19 is of hell crank shape and a spring 20 bears against the short arm and tends to rotate the rear free end of the long lever arm upward. This free end of the lever arm has a stud or lug 21 which projects into a slot in the arm of the roll-back 1.5. It is, therefore, apparent that as the roll back 15 is r0- tated, the lever 19 is rotated somewhat on its pivot and the bolt is at the same time thrown in or out, dependent upon which way the roll-back is rotated. The spring 20 acts to aid the last part of the movement of the bolt and to give a final impulse to it, thereby making the last part of its movement in both directions sprin actuated.

The under si e of the bolt mechanism 17 has a rectangular downwardprojection at its rear end in which a square hole 22 is formed and at the top of this square hole on the outer face of the bolt mechanism is provided two

lugs

23 and 24, the inside upper corners of which are beveled or rounded off, as shown. The lever 19 has on the under side of its rear end an inward projection 25 which extends into the hole 22 and bears against the top edge of this hole when the bolt is in locked and unlocked osition.

The stud 21 is in substantial alignment with the pivot axis of the lever 19 and the axis of the roll-back 15 when the bolt is thrown, as shown in Figures 6 and 7. The lever and roll-back, therefore, form in effeet a toggle which is substantially on dead center when the bolt is thrown. In order to retract the bolt, it is, therefore, necessary to break this toggle joint and this is done, when the key actuated mechanism is operated, by engagement of the end of the roll-back 12 with the projection 25, as indicated by the dotted position of the roll-back in Figure '7.

When the key slot in the cylinder lock is vertical and in osition for the keyto be inserted or with rawn, the roll-back 12. is in the upright position shown in Figure 2. In other words, this is the initial position of the roll-back 12. When the bolt is retracted, the roll-back 12 is rotated to the right, as shown in Figure 2, to throw the bolt, while it is rotated to the left to unlock or retract the bolt. In order to prevent the turning of the rollback 12 in the wrong direction to operate the look, a stop mechanism is provided consisting of a semi-circular rock member 26 which is pivoted to a boss 27 on the inside of the case directly above the end of the roll-back 12 in the latters initial position. The lower edge of this rock member 26 has its two ends flanged or bent inwardly to form

stop members

28 and 29, the rock member being cut away between the two stop members. The pivot opening through the rock member 26 is slotted in a vertical direction and a spring 30 is coiled around the pivot of the rock member and has its two ends bearing upon the top of the

stop members

28 and 29 and tends to hold the rock member resiliently with the pivot at the top of the slot.

On the top of the bolt 17 there is formed an upwardly projecting boss 31 and the two

stop elements

28 and 29 overhang the path of this boss 31 in such relation thereto that the top surface of the boss engages the'under surface of the stop elements 28'and 29 successively as the bolt is reciprocated, and the rock member is thereby rocked to bring the

stop1 elements

28 and 29 alternately into the pat of the roll-back 12 on opposite sides thereof.

In Figure 2, the partsare shown in the position they occupy when the bolt is retracted. The boss 31 is underneath the stop element 29 and has brought the stop element 28 into the path of the roll-back 12 on the left side thereof. lit is, therefore, not possible to turn the roll-back 12 toward the left, but it is free to be turned to the right which is the proper direction to turn it in order to throw the bolt. As the roll-back 12 is turned to the right, it clears the lug 2 1 and engages the projection 25 on the lever 19, forcing it down against the tension of the spring 20 sufliciently to allow the roll-back to pass, and then engages the inner face of the lug 23. The continued rotation of the roll-back 12 forces-the bolt mechanism to the left and throws the bolt, at the end of which movement the roll-back clears the rounded corner of the lug 23. The boss 31 has now engaged the lower cam face of the stop element 28 and rocked the rock member to its opposite position with the stop element out of the path of the roll-back 12 and the stop element 29 in the path of the roll-back, as shown in. Figure 6.. It is now impossible to turn the roll-back 12 past itsinitial position toward the right, but it is free to be rotated toward the left to retract the bolt.

It sometimes happens that in operating the knob 16 the bolt is left in a mid-position, as indicated in Figure 10. In such case the key operated roll-back may be rotated to the left to unlock the bolt, but it will not clear the lug '23 and will push against the outer edge thereof in retracting the bolt, finally assuming the position shown in Figure 11, It is now not possible to continue the rotation of the roll-back 12 in that direction to its initial position in order to extract the key. and since the boss 31 is in engagement with the cam face of the stop element 29, the rock member has been rotated to bring the stop element 28 into the path of the rollback 12. Unless some provision were made for permitting the stop element 28 to yield under such conditions, it would be impossible to bring the roll-back 12 back to its initial position to permit of the extraction of the key. It will be noted that the elongated pivot bearing of the rock member 26 and the spring 30 will permit of this necessary yielding. As the key is turned back in a clockwise direction,

the end of the roll-back 12 will-engage underneath the cam face of the stop element 28 and raise it against the tension of the spring '30,.as indicated'in thedotted position of the 32 when the door is closed. This extension 1 is provided on its inner face with a trans versely extending raised'part or ridge portion' 33, spaced from the end wall of the case 1 and perforated at two points in line with the locking elements 18 and adapted to re ceive the ends of these locking elements when the bolt is thrown, as indicated in Figure ti.

The door jamb 34: is rabbeted to receive the strike which is an angular member having the outer face of its shorter arm recessed to receive the raised portion 33. The wall of this raised portion adjacent the end wall of the case 1 is perforated at two points soas to receive the locking elements 18. These perforations are preferably somewhat elongated to take care of the relative sag of the door or door frame.

Tt will, therefore, be seen that when the door is closed and the bolt thrown into locking position, the locking elements pass through the outer wall of the strike and terminate in the raised part 33. With such an interlocking construction, it is manifest that the lock is jimmy-proof and that the lock case will not rotate relative to the strike when the bolt is thrown, even though the screws 2 are removed. Both arms of the strike are provided with screw holes through which the screws pass for attachment to the door jamb. The screw holes in the inner face of the recessed arm are new ered by the extended outer wall 1, as will be noted, and security is thereby provided against the possibility of removing the screws from the recess of the strike when the door is closed and locked. These screws in the recess of the strike are diposed at an angle, as indicated in Figure 4:, so that the screws diverge from each other and thereby hold the strike more securely against inward pressure, such as would be exerted from the outside of the door in attempting to pry or force it inward.

In the following claims 1 do not use the term roll-back in any strict or limited sense, but I wish it understood to include any part immediately rotated by the key to actuate the bolt, whether it be integral the key, as in the case of a bitted key, or be a part separate from-the key, as in the construction illustrated.

I claim:

1. A. lock mechanism comprisin a case, a bolt slidable in the case, a rollback for actuating the bolt in both directions, and a stop device movable into and out of the path of the roll-back by the relative movementof the bolt and case.

2. A look mechanism comprising a case, a bolt slidable in the case, a roll-back for actuating the bolt in both directions, a rock member having two stop elements adapted to move alternately into and out of the path of the roll-back as the member is rocked, and means controlled by the movement of the bolt for actuating the rock member.

3. A look mechanism comprising a case, a bolt slidable in the case, a roll-back for moving the bolt in both directions, a stop device adapted to be moved alternately into and out of the path of the roll-back on opposite sides of the latters initial position, and means controlled by the movement 0 the bolt for imparting the said movements alternately to the stop device as the bolt is mov'ed'to and from locked position,

4. A look mechanism comprising a case, a bolt slidable in the case, a roll-back for actuating the bolt in "both directions, a rock member having two stop elements adapted to move alternately into and out of the path of the roll-back as the member is rocked, and an actuating element for the rock member adapted to engage and actuate the rock member when the two are relatively moved, the parts being so related that the movement of the bolt effects said relative movement.

5. A lock mechanism comprising a case, a bolt slidable in the case and having a boss thereon, a roll-back for actuating the bolt in both directions, and a rock member pivoted tothe case in position to be engaged and actuated by the said boss as the bolt reciprocates, the rock member having two stop elements adapted to move alternately into and out of the path of the roll-back on opposite sides of the latters initial position as the said member is rocked.

6. A look mechanism comprising a case, a bolt slidable in the case, 'a roll back for actuating the bolt in both directions, a pivoted rock member havin two spaced stop elements each provide with a cam face and adapted to move alternately into and out of the path of the roll-back as the member. is rocked. and an actuating element for the rock member adapted to engage the said cam faces successively and rock the said member as the said member and actuating element are relatively reciprocated, one of the two relatively reciprocable parts being carried by the bolt and the other by the case.

7. A look mechanism comprising a case, a bolt slidable in the case and having a boss thereon, a roll-back for actuating the bolt in both directions, and a rock member pivoted to the case and having two spaced stop elements each provided with a cam face and adapted to move alternately into and out of meaeae the path of the roll-back on opposite sides of the latters initial position, the cam faces being so related to the said boss as to be enga d successively thereby and rock the roc member as the bolt re'ciprocates.

8. A look mechanism comprising a case, a bolt slidable in the case, a roll-back for actuating the bolt in both directions, a movable stop device having a cam face and a stop face, and means for resiliently holding the stop device in a position with its cam face crossing the path of movement of the rollback at one point and the stop face crossing said path at another point.

'9. A look mechanism comprising a case, a bolt slidable in the case, a roll-back for actuating the bolt in both directions, a pivoted f rock member having the pivot bearing elongated to permit movement of the pivot oint toward and from the axis of the rollack, resilient means yieldingly holding the rock member in its position nearest the axis of the roll-back,'the rock member having two spaced stop elements each provided with a cam face and a stop face and adapted to move as the member is rocked alternately into and out of a position with the came face crossing the path of movement of the rollback at one point and the stop face crossing said path t another point, and an actuating element for the rock member adapted to engage the said cam faces succemively and rock the said member as the said member and actuating element are relativel reciprocated, one of the two relatively reciprocable parts being carried by the bolt and the other by the case.

10. A lock mechanism comprising a case, a bolt slidable in the case and having a boss thereon, a roll-back for actuating the bolt in both directions, a rock member pivoted to the case on an elongated bearing and having two spaced stop elements each provided with a stop face and a cam face and adapted to move as the member is rocked alternately into and out of a position with the cam face crossing the path of movement of the rollback at one point and the stop face crossing said face at another point, and means for resiliently holding the rock member on its pivot in its position nearest the axis of the roll-back, the boss on the bolt being positioned to engage the cam faces successively and rock the rock member as the bolt reciprocates.

11. A lock mechanism comprising a locking member movable to and from looking ltd aeeaaaa in both directions, and a reversible stop device operative to prevent movement of the actuating means in the wrong direction from the initial position and arranged to be reversed by the movement of the actuating means.

13. A look mechanism comprising a case a bolt slidable in the'case, operating means for actuating the bolt in both directions, and a stop device for opposing the turning of the operating means in one direction, said stop being movable out of opposing position by the movement of the operating means in the opposite direction.

14. A look comprising a lock case adapted to be secured to the face of a door, a bolt slidable in said case and arranged to protrude from one end thereof in locked position, the outer wall of the case having an extension at the bolt protruding end, a raised part on the inner face of the extension spaced from the end wall of the case and having'a hole therein to receive the bolt in locked position, and a strike having a rectangular head adapted to be set into a rectangu'lar cut in the trim and recessed to receive the raised part on said extension when the door is closed, the wall of the recess adjacent the end of the case having a hole adapted to receive the bolt when in locked position and the other three walls of the head serving to cover the raw cuts in the door trim.

15. In a lock comprising a lock case adapted to be secured to the face of a door,

a bolt slidable in said case and arranged to protrude from one end thereof in locked position, the outer wall of the case having an extension at the bolt protruding end, a

raised part on the inner face of the extentangular head adapted to be set into a rectangular cut in the tri'n and recessed to receive the raised part on said extension when the door is closed, the wall of the recess adjacent the end of the case havin a hole adapted to receive the bolt when in locked position and the other three walls of the head serving to cover the raw cuts in the door trim and the bottom wallof the recess being provided with holes for screws to attach the strike to the door jamb, said recess being covered by the extended outer wall of the lock case when the door is closed.

16. A look comprising a lock case adapted to be secured to the face of a door, a bolt slidable in said ease and arranged to protrude from one end thereof in locked position, the outer Wall of the case having an ex-' tension at the bolt protruding end, araised part on the inner face of the extension spaced from the end wall of the case and havin a hole therein to receivethe bolt in looked position, and a strike having a rectangular head adapted to be set into a rectangular cut in the trim and recessed to receive the raised part on said extension when the door is closed, the wall of the recess adjacent the end of the case having a hole adapted to receive the, bolt when in locked position and the other three walls of the head serving to cover the raw cuts in the door trim and the bottom wall of the recess being provided with two angularly disposed diverging screw holes.

17. A look mechanism comprising a case, a bolt slidable in said case, a pivoted lever on said bolt, a rotative roll-back having an arm thereon, and a pivotal connection between the free end of the lever and said arm, the parts being so designed that the pivotal connection is in substantial alignment with the axes of the pivot and of the roll-back when the bolt is 1n locked position.

18. A lock mechanism comprising a case, a bolt slidable in said case, a pivoted lever on said bolt, a rotative roll-back having an arm thereon, a pivotal connection between the free end of the lever and said arm, the parts being so designed that the pivotal connection is in substantial alignment with the axes of the pivot and of the roll-back when the bolt is in locked position and resilient means tending to move the said ivotal connection toward the horizontal p ane of the axis of the roll-back.

'19. A lock mechanism comprising a cylinder lock adapted to be disposed in a transverse opening in a door and including a plate adapted to be clamped over the opening against the inner face of the door and having two outwardl projecting lugs, and a 100 case arrange to be secured on the inner face of the door over the said plate and in operative relation to the cylinder lock, the inner wall of the case being provided with two holes arranged to receive the 111 on said plate, whereby the cylinder lock is held against rotation.

In witnes whereof I hereunto subscrfpe my signature.

USU C. RIXSON.