US2731822A

US2731822A - Bargman

Info

Publication number: US2731822A
Authority: US
Publication date: 1956-01-24
Anticipated expiration: 1973-01-24

Description

Jan. 24, 1956 T. BARGMAN 2,731,822

' ROTARY-BOLT LOCK IN VEN TOR.

THEDOR' AP6/HHN Jan. 24, 1956 V1'. BARGMAN 2,731,822

ROTARY-BOLT LOCK 'lill/112711111114 IN VEN TOR.

77660009! GMA/V BY ROTARY-B913` LCK Theodore Bargman, Detroit, Mich.

Application SeptemherlS, 19152, Serial No. 309,715

6 Claims. (Cl. 70-135) This invention relates to rotary-bolt door-locks and in particular to such a lock embodying improvements in latching and locking mechanism, activating mechanism, and adjustment characteristics; this application constitutes a continuation-impart of my pending application erial No. 273,087, tiled February 23, 1952.

it is a primary object of tne invention to provide a simple actuating mechanism for rotary-bolt locks.

An object of the invention is to provide a novel outside handle and pull lever arrangement.

An object of the invention is to provide a housing concealing the pull lever and protecting same from the elements such as rain, snow, and ice.

An object of the invention is to provide improved keeper-to-bolt adjustment means which are easily located and adjustable as to height and depth.

An object of the invention is to provide a cammingend on the end of the pull lever to activate the lock mechanism,

An object of the invention is to provide a rotary-bolt lock which is easily mounted on a door and jamb as conventional locks or which is easily integrated with a door and jamb such as in automobiles.

An object of the invention is to provide simplied latching and locking means.

An object of the invention is to provide a lock mechanism which automatically unlocks upon closing and latching a door.

An object of the invention is to provide a lock mechanism which facilitates unidirectional motion of the inside handle to both unlocl; and unlatch the mechanism.

An object of the invention is to provide a more efficient, less expensive, improved, simplified lock having fewer parts and which is more positive in action and more durable in use.

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

Fig. 1 is a cross-sectional View of Fig. 2 taken on the line lthereof showing the inventive lock installed on a door and jamb.

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

Fig. 3 is an exploded perspective view of the parts constituting the jamb assembly.

Fig. 4 is a cross-sectional View of Fig. 1 taken on the line 4 4 thereof.

Fig. 5 is a cross-sectional view of Fig. 1 taken on the line 5 5 thereof.

Fig. 6 is a cross-sectional view of Fig. 2 taken on the line 6-6 thereof showing the mechanism in locked and latched condition.

Fig. 7 is a view similar to Fig. 6 showing the lock in latched condition.

Fig. 8 is a View similar to Figs. 6 and 7 showing the mechanism in unlatched and unlocked condition.

tent

ICC

Fig. 9 is a cross-sectional view of Fig. 6 taken on the line 9 9 thereof.

Fig. 10 is a cross-sectional view of Fig. 6 taken on the line 10-10 thereof.

Fig. 11 is a View looking in the opposite direction of Figs. 6 to 8 taken on the line 'l1-*11 of Fig. 2; and

Fig. 12 is a perspective view of a modified keeper'particularly suitable for installation on wood jambs.

Referring now to the drawings wherein like numerals refer to like and corresponding parts throughout the several views, the rotary-bolt lock and associated parts disclosed therein to illustrate the invention comprise a door 20 and a jamb `21, a mechanism assembly 22 mounted on the door 20 and ajamb cooperating assembly' Z3 mounted on the jamb 2l.

The jamb assembly 23 comprises a base-

plate

24 or 24A screwed or bolted to the jamb by the bolts 25; the base-

plate

24 and 24A has a relieved center portion 26 in the area surrounding and between the relatively large

bolt receiving apertures

27 and 25 through which apertures the bolts 29 and Sli are disposed in threaded engagement with the compound strap nut 3l which lies in the relieved portion 26 of the base-plate 2d and it is obvious that the

bolts

29 and 30 and compound nut 3l are free to move relative -to the base-plates Z-'l and 24A within the limits of the relatively

large apertures

27 and 28. The keeper-guide supporting face-plate 32 is fastened against the base-plate 24by meansof the

bolts

29 and 34% threaded in the compound strap nut 3l. and it is to be noted that the portions of the face-

plates

32 and 24 have mating

vertical serrations

35 and 33A to facilitate depth adjustment of the face-plate 32 and also vmating

horizontal serrations

34 and 34A for regulating height adjustment. It can now be seen that by loosening the screw 29 in the nut 31, the plate 32 may be universally adjusted for depth at a controlled height and that by loosening the screw 3 in the nut 3l the face-plate 32 may be universally adjusted for height at a controlled depth. It is to be also noted that the compound nut fil is capable of blind tightening and loosening in that the opposite bolt 2% or 3d acts as a stop or wrench in conjunction with the tightening or loosening of the other bolt 29 or Sti.

Fig. l2 shows the base-plate 24A equipped with a back wall Sti, end walls 3l and 32, and mounting tabs S3 and ifi for use in creating a bolt 4l receiving cavity on a jamb when a bolt 4l is mounted in projecting relationship on a door.

The jamb face-plate 32 carries the upper and

lower guides

35 and 36 which cooperate with the door plate 359 guides 37 and 3S to align the door mechanism with the jamb mechanism. The jamb face-plate 32 also carries keeper fiti which cooperates with the door rotary-bolt di which is fixed on the shaft 412 journaled in the door faceplate 39 to lock or latch the door. Thel shaft E-Z is connected to the latching and locking rotor i3 for angular movement therewith via the sleeve te and shaft d5 on which the rotor i3 is i'ixed and which shaft i5 is journaled in the case d6. lt can now be seen that if the rotor 43 is held against rotation, the bolt il and keeper li@ prevent the door opening relative to the jarno, and that, if the rotor 43 is free to rotate, the door can open and close relative to the jamb with the rotor Lil walking over the lobes e7 and i3 of the 1iieeper as the teeth t9 of the rotor 43 mesh with the lobes Pl-'7 and 43 of the keeper 4t) analogously to a rack and pinion, Figs. l 2, and 4.

Referring to the latching mechanism for selectively permitting and prohibiting rotor 43 rotation, the arm Sti is spring-pressed via the torsion spring Si so that the latch dog 52 on the arm S0 is urged into engagement with the projections 43A on the rotor 43 so` as to prevent rotor rotation in a door opening direction and to permit rotor 43 rotation by-passing in a door closing direction. Integral With the arm 50 is the ilat cam 53 which coacts with the flat cam 54 on the hand lever 54a which is pivotally mounted at 56 on the escutcheon plate 57 and it is to be noted that the lever 55 is resiliently spring-pressed out of cam-engaging relationship by the spring 53. The shroud or housing 66 surrounds the top and sides of the lever 55 and has an opening 6l in the bottom thereof for inserting the operators fingers to pull the handle portion 62 of the lever to move the cam portion 54 against the cam portion 53 to pivot the arm 5@ to move the dog latch 52 out of engagement with the projections 43A to permit rotation of the rotor 43 to unlatch the rotor 43 from the outside. The inside unlatching mechanism includes the cam carrier 65 fixed on the shaft 66 which is journal/ed in the back plate 67 and operated by the inside handle 68 to pivot the carrier 65 to move the cam portion 69 downwardly against the latching lever to drop the latch dog 52 out of engagement with the rotor 43 to unlatch the rotor d3.

Relative to the locking mechanism the cam carrier 65 is equipped with a tongue 7) which operates in conjunction with the leaf spring detent 71 to tix the carrier 65 in an optional relative rotational position or angular rotational position as seen in Figs. 6 and 7 both of which are short of unlatching the door in contra-distinction to Fig. 8 which shows the cam portion 69 moved past the positions of Figs. 6 and 7 depressing the lever 5b to unlatch the rotor 43. When the tongue 70 is at the right or on the outside of the spring 71 point of bearing, Fig. 6, the angular position of the carrier 65 is such that the locking dog 72 thereon is located in locking engagement with the projections 43A of the rotor d3, and, when the spring 7l point of bearing is on the opposite side of the tongue 70, Fig. 7, the locking dog 72 is located out of contact with the projections of the rotor 43. it can now be seen that the carrier 65 is operable to lock the rotor 43 by movement of the inside handle in a direction opposite to unlatching the mechanisrn, and, that the inside lever 68 via the cam portion 69 on the carrier 65 is capable of unlocking the mechanism by counter-clockwise movement as` seen in the drawings from a position illustrated in Fig. 6 to the position seen in Fig. 7 and that further movement of the inside handle 66 in a counter-clockwise direction moves the cam portion 69 against the latching lever 50 to unlatch the rotor 43.

To lock and unlock the mechanism from the outside of the door a key cylinder 75 is pivotally disposed in the outside handle 623 and has an eccentric tip 76 cooperating with the projecting bifurcated ends 77A and 77B located on the carrier 65 to move the carrier 65 between the position seen in Figs. 6 and 7 to lock and unlock the locking dog 72 relative to the rotor 43. It is to be particularly noted that the eccentrically disposed tip 76 is normally in a neutral position out of engagement with the bifurcated ends 77A and 77B and only contacts the biiurcated ends 77 when selectively by-directionally moving the carrier 65 between the positions seen in Figs. 6 and 7 so that the inside handle can operate the mechanism without interference from the outside means of activating the locking mechanism.

The key cylinder 75 is preferably so set that the key, not shown, is insertable and eXtractable only when the tip '76 is in the neutral position as seen in Fig. 8 and the key cylinder is also so set that it is fixed in this neutral position when the key is not in the cylinder 75. Also, the key cylinder is preferably set to move 90 degrees in either direction from the neutral position seen in Fig. 8 to the positions seen in Fig. 6 and 7 to lock and unlock the rotor 43 respectively by moving in one direction and contacting the bifurcated end 77A on the carrier 65, Fig. 6, to pivot the carrier 65 to move the locking dog 72 on the carrier 65 into Contact with the rotor 43 and by moving in the other direction and contacting the bifurcated end 77B to pivot the carrier 65, Fig. 7, to move the locking dog 72 on the carrier 65 out of Contact with the rotor 43; the spring detent 7l holds the carrier 65 in the key-set position via the tongue 70. After the user on the outside so sets the carrier 65 in either position illustrated by Figs. 6 and 7, he turns the key to the position of Fig. 8 and extracts the key leaving the tip 76 in a neutral position relative to the bifurcated ends 77A and 77B so that a user on the inside can operate the mechanism via the inside handle 68 to lock, latch, unlock, and unlatch the mechanism as desired.

The lock permits closing the door in all conditions as the rotor 43 can pass the latching dog and locking dog in rotational direction involved in a door-closing direction and it is to be further noted that the door cannot be closed in a locked condition as the rotor rotation in closing the door unlocks the device as the rotor 43 projections 43A cam the locking dog 72 to the position of Fig. 7.

Although the invention has 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.

I claim:

l. A rotary-bolt lock comprising a rotary-bolt, a rotor connected to said bolt for rotation therewith, projections on said rotor, a spring-pressed latch lever constantly urged toward locking engagement with said rotor, a latch dog on said lever normally engaging said projections to prevent door opening direction rotation of said rotor to latch a door and to permit door closing rotational rotation of said rotor in closing a door, an outside pull lever having a hand portion, a flat lever cam on said pull lever, and a dat cam on said latch lever engageable by said pull lever Hat cam to disengage said latch dog from said rotor projections to release said rotor for door opening directional rotation to permit opening of a door; and inside handle, a shaft pivotally supporting said handle for rotational movement therewith, a cam carrier Xed on said shaft for rotational movement therewith, and a cam lobe on said carrier adapted to engage said latch lever to depress said latch dog out of engagement with said rotor projections via pivoting said handle to permit said rotor turning in a door opening direction.

2. In a device as set forth in claim l, a locking dog on said cam carrier adapted to selectively engage said rotor projections to prevent rotation of said rotor in a door opening rotational direction, a tongue on said cam carrier, and a spring-pressed detent adapted to selectively hold said cam carrier in and out of locking-dog rotorprojection engagement as positioned by manual pivoting of said handle.

3. In a device as set forth in claim l bifurcated ends on said cam carrier, a key cylinder, an eccentrically disposed tip on said cylinder adapted to engage said bifurcated ends to by-directionally pivot said cam carrier to move said locking dog into and out of engagement with said rotor projections, a tongue on said cam carrier, and a spring-pressed detent adapted to hold said cam carrier in locked or unlocked relationship.

4. A rotary-bolt lock comprising a rotary-bolt, a rotor connected to said bolt for rotation therewith, projections on said rotor, a spring-pressed latch lever, a latch dog on said lever adapted to engage said projections to prevent 4 door opening directional rotation of said rotor to latch a door and to permit door closing directional rotation of said.

handle, a shaft pivotally supporting said handle for ro- 'rational movement therewith, a carrier fixed on said shaft for rotational movement therewith, and a lobe on said carrier adapted to engage said latch lever to depress said latch dog out of engagement with said rotor projections to permit said rotor turning in a door opening direction; a locking dog on said carrier adapted to selectively engage said rotor projections to prevent rotation of said rotor in a door opening rotational direction, a tongue on said carrier, and a spring-pressed detent adapted to selectively hold said carrier in and out of locking-dog rotor-projec tion engagement as set by manual pivoting of said handle; bifurcated ends on said carrier, a key cylinder, an eccentrically disposed tip on said cylinder adapted to engage said bifurcated ends to pivot said carrier to move said locking dog into and out of engagement with said rotor projections, a tongue on said carrier, and a springpressed detent adapted to engage said tongue to hold said carrier in locked or unlocked relationship relative to said rotor.

5. In a device as set forth in claim 4, said key cylinder being normally positioned withy said tip in a neutral position relative to said bifurcated ends to eliminate interference with said inside handle operation.

6. In a device as set forth in claim 5, said cylinder being by-directionally operable by a key to selectively bydirectionally pivot said carrier to move said locking dog into and out of engagement with said rotor.

References Cited in the fue of this patent UNITED STATES PATENTS 2,058,163 Malone Oct. 20, 1936 2,270,559 Rolph et al. Jan. 20, 1942 2,373,237 Endter Apr. 10, 1945 2,476,332 Tierney et al July 19, 1949 2,552,815 Roethel May 15, 1951 2,604,345 Roethel July 22, 1952 2,673,757 Marple Mar. 30, 1954