US2797571A - Rotary-bolt door-lock - Google Patents

Description

July 2, 1957 T. BARGMAN 2,797,571

A ROTARY-BOLT' DOOR-Lock4 Filed Feb. 2s, 1952 2 sheets-sheet 1 1N VEN TOR.

raf-cooles Afa/wmv T. BARGMAN ROTARY-BOLT DOOR-LOCK' ,July 2, 1951 F115@ Feb. 2s, 1952 2 Sheets-Sheet 2 ATTO/P/VEV United States Patent ROTARY-BOLT DOOR-LOCK Theodore Bargman, Detroit, Mich.

Application February 23, 1952, Serial No. 273,087

4 Claims. (Cl. 70-135) This invention relates to rotary-bolt door-locks and in particular to a self-contained rotary-bolt door-lock embodying improvements facilitating mounting the lock on doors and jambs which normally would not be capable of using a rotary-bolt lock as indicated by the present state of the art.

Rotary-bolt door-locks have been employed heretofore to latch and lock various metal doors, such as automobile doors, wherein the doors and jambs have been specially formed and prepared to receive the lock mechanisms to the extent that the doors and jambs actually constitute portions of the lock itself such as the case, strikers, slides, bearings, etc. The several devices of the prior art are not adaptable for optional use and must be specially integrated with the particular door and jamb and consequently have only been used on items fabricated in large production runs, such as in the automobile industry.

With the foregoing in view it is the primaryobject of the instant invention to provide a rotary-bolt door-lock which is capable of being used optionally in place of prior art locks without necessitating original design integration with the door upon which the inventive device is used.

An object of the invention is t-o provide a rotary-bolt lock which is as easily mounted on a door and jamb as prior art locks.

An object of the invention is to provide a rotary-bolt lock having an outside push button bolt release.

An object of the invention is to provide a rotary-bolt lock having an inside pivotal lever bolt release and lock.

An object of the invention is to provide a rotary key cylinder in the outside push button for pivoting the boltlock to on and off positions.

An object of the invention is to provide a rotary-bolt lock with a pivotal inside handle which moves in the same direction to unlock and unlatch the door.

An object of the invention is to provide an actuating mechanism case mounted on the outside handle with the handle trim plate constituting one side of the case.

An object of the invention is to provide lengthwise adjustable connecting means between the actuating meehanism and the rotary-bolt.

An object of the invention is to provide sidewise adjustable connecting means between the actuating mechanism and the inside handle.

An object of the invention is to provide a more ecient, less expensive, improved, lock having fewer parts. which is easily installed, and more durable in use.

These and other objects of the invention will become apparent by reference to the following description of a unitary rotary-bolt lock embodying the invention taken in connection with the accompanying drawings, in which:

Fig. l is a face elevational view of the inventive device, partly in cross-section, taken on the line 1-1 of Fig. 2.

Fig. 2 is a cross-sectional view of the inventive device.

Fig. 3v is a cross-sectional view of Pig. 1 taken on the line 3--3 thereof.

Fig. 4 is a cross-sectional View of Fig. l taken on the line 4-4 thereof.

Fig. 5 is a cross-sectional view of Fig. 2 taken on the line 5--5 thereof.

Fig. 6 is a cross-sectional view of Fig. 2. taken on the line 6-6 thereof; and

Fig. 7 is a crosssectional view of Fig. 6 taken on the line 7-7 thereof.

Referring now to the drawings wherein like numerals refer to like and corresponding parts throughout the several views, the rotary-bolt lock and environment disclosed therein to illustrate the invention comprises a door 10 having a case receiving cavity 12 in the face of the door 10, an inside handle post receiving aperture 13 in the back of the door 10 communicating with the cavity 12, a bolt pin receiving aperture 14 in the edge of the door 10 communicating with the cavity 12, and a bolt plate and guide cavity 15 on the edge of the door 10 communicating with the aperture 14, and fastening screw apertures 16 and 17. The jamb 18 is equipped with a strike portion 19 against which the door 10 closes. It is obvious that the bolt cavity 15 can be located on the jamb.

The lock case 20 tits on the outside of the door 10 in the cavity 12 and comprises cover plate 21, a block 22 welded on the plate 21, a handle 23 secured to the plate 21 via screw 24 and secured to the door via screw 25 in aperture 16 threaded in the handle 23 which secures the plate 21 on one end relative to the door lil, and screw 26 in aperture 17 threaded in the block 22 which secures the plate 21 relative to the other end on the door 10. A bracket 30 is L-shaped in cross-section and is secured to the block 22 via screws 31, which bracket 30 together with the handle 23 and plate 21 constitutes the case 20 and it can now be seen that the case 20 can easily be mounted on any door, especially a wooden door by forming the cavity 12 and associated4 apertures in the door.

The jamb 18 is equipped with a face serrated base-plate 32 and a back serrated mounting-plate 33 sidewise adjustably disposed relative to the plate 32 via the screws 34 and slots 35 with the serrations therebetween fixing the plates 32 and 33 relative to each other with the plate 33 supporting the keeper 36 and guide 48. Co-operating with the portions of the lock mounted on the jamb 18 is the rotary latch-bolt or latch-rotor 37, freely revolvably journaled in the door plate 38, which plate is mounted on the door 10 via the screws 39. It is to be noted that the latch-bolt or rotor 37 is mounted `on the latch-bolt pin 4t) for rotation therewith and that the latch-bolt pin 40 terminates in the stub 41 on the inside of the plate 3S with the shoulder or washer 42 relatively positioning the latch-bolt 37 relative to the plate 38. rlhe lock-bolt or lock-rotor 43 is secured on the lock-bolt pin 45 which is freely revolvable having bearings in the short leg 44 of the bracket 30 and concentrically located relative to the latch-bolt pin 4t). The pins 40 and 45 are preferably square in cross-section and are mechanically interconnected by the square sleeve 46 or other suitable obvious means. lt can now be seen that the latch-bolt 37 and lock-bolt 43 are mechanically united for rotation or for holding a static position and that movement or lack of movement of one is transferred to the other. The interconnecting sleeve 46 can be any length thereby permitting the case 2li to be located any desired distance from the plate 38 and latch-bolt 37. This permits any desired distance therebetween for any purpose such as for locating the case 20 adjacent structural members in the door. Integral with the plate 38 is the guide 47 which rides between the bottom of the keeper 36 and the top of the jamb guide 48 on the jamb mounting plate 33. It can now be seen that the teeth 49 on the latch-bolt 37 walk over the lobes 50 on `the keeper 36 and that the guide 47 maintains a pressure contact between the teeth 49 and the lobes 50 to maintain the door in a rmly latched position relative to the jamb 18 and that both the latch and lock-bolts must be freely rotatably disposed to etect closing of the door and that both must be heldagainst rotation to maintain latching and/r locking of the'door relative to the jamb 18. j

The latch and locking mechanism comprises four evenly spaced notches or cams 51 and four evenly spaced projections or stops 60 on the rotary lock-bolt `43 working in conjunction with the bell-crank 52 which is pivotally mounted on the leg 44 of the bracket 30 at 53 with the tip 54 thereof constantly spring pressed into engagement with the rotary lock-bolt 43 by the torsion-spring 55 with the end 56 of the bell-crank 52 opposite to the tip 54 disposed adjacent the thumb-plunger 57 which is depressably mounted in the handle 23 via the spring 58 so that when the plunger 57 is depressed, its inner portion contacts the end 56 of the bell-crank 52 to pivotally rock same against the spring to disengage the bell-crank tip 54 from the projections or stops 60 of the rotary lock-bolt 43. It can now be seen thatin closing the door 10 relative to the jamb 18, contact between the teeth 49 and lobes 50 will cause rotation .of the rotary-bolts 37and 43 with the rotary-bolts moving in a clockwisedirection as seen in Fig. 7 thereby permitting the projections or stops 60 to by-pass the bell-crank end 54 via the cams 51 with `the spring 55 returning the bell-crank end 54 behind a projection or stop 60 thereby latching the door 10 relative to the jamb 18. This latched condition of the door is released via depressing the plunger 57 to move the tip 54 away from the projection 60 to permit counter-clockwise rotational movement of the rotarybolts 43 and 37 as seen inFig. 7 so that the door can be opened with the teeth 49 of the latch-bolt 37 walking over the lobes 50 of the keeper 36 as seen in Figs. 3 and 4. In other words, the spring pressed bell-crank tip 54 is by-passable in closing the door to permit rotation of the rotary-bolts and is non by-passable in opening the door to maintain the door in latched condition until manually released.

Relative to operating the device from the inside of the door 10, the inside door handle post 61 is bearinged in the long leg 62 of the bracket 30 by the collar 63 on the exterior of the leg 62 and the actuator or lever 64 fixed on the inner end of the post 61 for rotation therewith the lever 64 is resiliently centered by the spring 64A. The bell-crank 52 is equipped with a tab 65 adjacent the pivot 53 and the lever 64 is equipped with a projection 66 for operating the bell-crank 52 via manual rotation of the inside handle 67 aflixed to the post 61. It is obvious that the post 61 can be of any length and sawed otf to suit the thickness of the door to which the device is attached. It can now be seen that rotation of the handle 67 rotates the post 61 and actuator or lever 64 in a clockwise direction as seen in Fig. 6 moving the projection 66 down against the tab 65 on the bellcrank 52 to move the tip 54 thereon out of engagement with the projections or stops 60 on the rotary lock-bolt 43 permitting rotary-bolts 43 and 37 to rotate to allow the door 10 to open relative to the jamb 18. Latching of the door 10 relative to the jamb 18 is effective relative to the inside manual operating mechanism as previously explained relative to the outside manual operating mechanism.

Referring now to the locking elements, the lockinglever 68 is pivotally mounted as at 69 and is bi-directionally spring pressed off center by the spring 70 and is prevented in further upward movement as seen in Fig. 6 yby the stop 71 on the bracket` leg 62 and is limited in downward movement via the locking-tip 72 on the lever 68 engaging the rotor lock-bolt 43 as indicated by the dotted lines in Fig. 7. It can now be seen that when the locking-tip 72 of the lever 68 is dropped into a notch or on a cam 51 behind a projection or stop 69 on the rotor lock-bolt 43, depression of the plunger 57 to operate the bell-crank 52 is not effective to release the rotary lock-bolt 43 for free rotation as the tip 72 on the locking-lever 68 prevents relative rotation of the rotor lock-bolt 43.

The locking-lever 68 is equipped with a cam portion 73 and a cam portion 74 on either side of the tongue 75 on the lever or actuator 64. It is to be noted that the tongue 75 may move to one side of the pivot-point 69 to engage the cam portion 74 or to the other side of the pivot-point 69 to engage the cam portion 73 so that the tongue 75 is capable of actuating the lever 63 to move the locking-tip 72 thereon into and out of engagement with the rotary lock-bolt 43. It is to be further noted, Fig. 6, that movement of the lever 64 via the inside handle 67 in a clockwise direction not only cams the tip 72 out of engagement with the lock-bolt 43 but also releases the tip 54 out of engagement with the rotary lock-bolt 43 which feature is a safeguard against confused operation by an emotionally upset person on thc inside of the door 10 in the case of emergency such as tire.

Relative to locking the device from the outside via the key cylinder 59 in the plunger 57, it is to be noted that the cylinder 59 carries the tongue 76 which lies between the bifurcated ends 77 and 78 disposed sidewise outwardly on the locking-lever 68. Obviously, rotation of the key cylinder in one direction moves the tongue 76 in one direction against the end 77 to bias the tip 72 into locking engagement with the rotary lock-bolt 43 and rotation of the key cylinder 59 in the opposite direction engages the tongue 76 against the end 78 to carry the end 72 on lever 68 out of engagement with the rotary lock-bolt 43.

When the locking-lever 68 is in locking position with the tip 72 in engagement with a projection or stop 60 on the rotary lock-bolt 43 as etfected by either the cylinder 59 or the inside handle 67, depression of the outside plunger will not unlock the locking-lever 68 but will merely release the bell-crank 52 from engagement with the rotary lock-bolt 43 so that the bolts are held against rotation thereby preventing the door 10 from being opened. Conversely, the inside handle is always capable ofreleasing both the locking-lever 68 and bell-crank 52. It is to be further noted that when the door is locked from the inside, it can be opened from the outside by operation of the cylinder 59 to release the locking-lever 68 and by depression of the plunger 57 to releasel the bell-crank 52.

It can now be seenthat the device is easily installed on any metal or wood door as the operating mechanism is unitized and handles and bolts adjustably mountable. In this connection the inside post 61 is produced rather long and sawed off to the desired length after the case 20 is mounted on the door. Likewise, the sleeve 46 is produced rather long and sawed off to the desired length after the case 20 is installed and-the plate 38 is ready for mounting. It is important to note that the case 20 can be installed at any point on the door in line with the plate 38 and a sleeve 46 of suitable length employed to unite the bolts 43 and 37. Y

Although the inventionhas been shown and described in detail, it is obvious that many changes may be made in the size, shape, detail and arrangements of the elements of the invention within the scope of the appended claims. Y v

l. An integral rotary bolt lock comprising a lock case including a face plate constituting one side of said lock case, a bracket mounted on said plate constituting a second case side at right angles -to said plate, a third case side on said bracket spaced parallel to` said face plate; said `case being mountable in a door cavity; alock` rotor rotatably journaled in said second case side, a iirst square stub shaft axially secured to said lock rotor and extending outwardly of said second case side adapted to rotate with said lock rotor, a latch rotor separately mountable on a door edge and axially aligned with said lock rotor, a second square stub shaft axially secured to said latch rotor and adapted to rotate with said latch rotor and extending toward said first square stub shaft and axially aligned therewith, and a square sleeve disposed between and over both said stub shafts so that both said rotors are locked together for rotation in opening and closing a door and for staying stationary in latching and locking a door.

2. In a device as set forth in claim 1, a spring pressed bell-crank pivotally mounted on said case engaging said lock-rotor and adapted to permit rotation of said rotor in closing a door and to prevent reverse rotation of said rotor to latch the door closed, and manual means to move said bell-crank to release said lock-rotor to permit unlatching the door.

3. In a device as set forth in claim 2, a locking-lever pivotally mounted on said case and bi-directionally spring biased olf center to either engage said lock-rotor in one direction or to disengage said lock-lever in the other 6 direction for respectively locking and unlocking said lockrotor, and second manual means adapted to move said lock-lever into either position.

4. In a device as set forth in claim 3, said second manual means comprising a spring centered tongue adapted to cam said locking-lever into either position by rotation of an inside handle, and a key cylinder operated tongue adapted to cam said locking-lever into either position.

References Cited in the file of this patent UNITED STATES PATENTS 1,168,584 Wells Ian. 18, 1916 1,326,193 Harden Dec. 30, 1919 1,368,573 Riel Feb. 15, 1921 2,094,413 Schonitzer Sept. 28, 1937 2,189,992 Pearce Feb. 13, 1940 2,538,913 Roethel Ian. 23, 1951 2,552,815 Roethel May 15, 1951 2,557,468 Roethel lune 19, 1951 2,608,428 Allen Aug. 26, 1952 2,637,581 Roethel May 5, 1953 2,705,885 Craig Apr. 12, 1955

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