US1405236A

US1405236A - Latch-controlling mechanism

Info

Publication number: US1405236A
Application number: US387247A
Authority: US
Inventors: Lewis Harry; Clyde H Pettey
Original assignee: Individual
Current assignee: Individual
Priority date: 1920-06-07
Filing date: 1920-06-07
Publication date: 1922-01-31
Anticipated expiration: 1939-01-31

Description

H. LEWIS AND C. H. PETTEY.

LATCH CONTROLLING MECHANISM.-

APPLICATION FILED JUNE 7. 1920.

Patented Jan. .31, 1922.

. E TOR. 761 .5 LEWIJ CJ-iPE 77E) BY g g q M ATTORNEYS.

- trolling mechanism UNITED STATES PATENT OFFICE.

HARRY LEWIS AND CLYDE H. PETTEY, OF SIOUX CITY, IOWA.

LATCH-CONTROLLING MECHANISM.

i To all whom it may conccm Be it known that we, HARRY Lnwls and CLYDE H. Pn'rrnr, citizens of the United States, and residents of Sioux City, in the county of Woodbury and State of Iowa, have invented new and useful Improvements in Latch-Controlling Mechanism, of which the following is a specification.

A duty of merchant police and night watchmen is to try the doors, at regular intervals, of the establishments under their protection to ascertain if the doors are locked. This is a duty which is very easily and often shirked.

Many devices have been presented and used with varying success for checking the 'watchmens calls, but no means, as far as we are aware, has ever been divised which indicates in any way whether or not the doors have been tried. 2

Our present invention, therefore, has for itsprimary object the production of a mech-' amsm by which the watchman registers his call and the operation of which requires, first, trying the door to determine whether or not it is unlocked.

- -Furthermore, the invention contemplates acombination door-latch and register consimple and comparatively inexpensive in construction, yet dependable and thoroughly eflicient in operation. The above and other objects and advantages we successfully attain in the embodiments hereinafter described, more. particularly defined in the claims and illus trated in the accompanying drawings which form a part of this application and in which like characters of reference indicate corresponding parts throughout the several views, of which:

Fig; 1 is an elevation, partly in sect1on,

of a device constructed in accordance with our invention, and as applied to a swinging closure.

Fig. 2 is a vertical section, taken on the line 22 of Fig. 1.

Fig. 3 is an enlarged fragmentary front elevation of the same, showing the stop latch, and Fig. 4: is an enlarged perspective view of the stop-latch. Fig. 5 is an elevation of the device partly in section as ap- Specification 0f Letters'Patent. Patented Jan, 31, 1922, Application filed June 7, 1920. Serial No. 387,247. I

would not be limited to such specific structures, for it will be clear, as the description. progresses, that the broad principle of the invention may be associated with divers other types of latch controlling inembers, and many modifications and alterations may be made in the details of construction and arrangement of parts herein disclosed without departing from the spirit and scope of the invention as defined in the appended claims.

Referring now more particularly to Figs.

1 and 2, 4 represents a door mounted to swing inwardly and provided with a familiar form of lock, 5, including a latchbolt, 6, and a lock-bolt 7. The latch-bolt is controlled by the usual rotating stem, 8,

--mount a clock casing, 13, enclosing a suitable clock train (not shown) and an hour spindle, 14, carrying a disc, 15, which, it will be understood, makes a complete revolution daily, weekly, or in any other interval chosen by the manufacturer.

Against the disc, 15, is placed coaxially a second disc, 16, of penetrable material and held removably in place by a washer, 17, and a nut, 18, threaded on the hour spindle, 1 1. The disc, 16, ispreferably provided with graduations, 19, or other characters,

dividing the said disc into units or intervals of time. The wall, 10, of the casing may be provided with a door, 2O, to afford access to the interior for the application and re moval of the discs, 16, to and from the clock. I

On the wall 10, is mounted an inwardly extending bracket, 21, having depending parts, 22, through which reciprocates a horizontal plunger, 23, having pointed end, 24, to penetrate the disc, 16, the disc, 15, being provided with an annular groove, 25, to permit such penetration. The plunger, 23, is held yieldably from the disc by means of a compression spring, 26, interposed between one of the members, 22, and a stop, 27, carried by the plunger.

The stem, 8, is mounted as usual, to be rotated a determinate distance to withdraw the latch bolt from its keeper, but is also B arranged to Vmove longitudinally through the lock. The stem,8, isflat-sided, as usual,

and projects through the wall, 10, of the casing, and enters the shank, 28, of'the inner door-knob, 29, the said shank having a flat-sided interior to slidably receive the stem, but prevent relative rotation between "the knob and stem, the knob being rotatably supported, as at 30, on the wall, 10. The outer knob, 31, is fixed to the stem as usual,

and betwen the shank, 32 thereof and the door is interposeda compression spring, 33,

which holds the stem, normally, yieldably outward; V

WVithin the having a key-hole slot, 35, through the larger portion of which passes the stem, 8,the' said plate being supported in. spaced relation to the wall, 9, by laterally bent end portlons, 36, suitably secured to the said wall.

Between the wall, 9, and plate, at, the stem is providedwith a tappet or a lateral lug 37, adapted to pass through the smaller portion of the slot, 35', by forcing the stem longitudinally, after it has rotatedpto withdraw the latch bolt from its keeper and align the lug with the said smaller portion of the slot, 35.

On one side wall, 11, of the casing is mounted a suitable bearing, 38, on which is fulcrumed, as at 39, a lever,-40, one-end of which is bifurcated to receive the olun 'er 23, and engage the cross-pin, 41, inthe plunger. The opposite end ofthe' said lever is aligned with the smaller portion of the slot, 35, for. engagement by the lug, 37.

77 By virtue of the construction now dis; closed, 1t is clear that a watchman first rotates the stem in a direction which will unlatch the door,then forces inwardly on the door-knob whereupon the lug, 37, coacts I Y with the lever, 40, and this with plunger, ;23, to register the call on 'the disc, 16, but

should the door he unloclre'd 'in other words, should the lock-bolt, 7, not be engaged in its keeper, an attempt to force the V stem inwardly will open the door.

' On oppositesidcs of thena rrowerportion of the slot,35, a'r'e provided guide members,

43, which prevent rotation of the stem after V the lug, 37, has been forced into engagement withthe'levers Obviously, when the pres- V sure is removed from the knob, 3 1,the

I spring, 33, "retracts the stem, andsubse- 'quently the usual latch-spring (not shown) restores the'stem and latch bolt to their normal'positions. Y 1 a r -As it is not desiredto have the device op -erate during the day or, perhaps, other times, we haveprovide'dmeans for renderingthe register inoperable, which may conof 'a latch-plate, 45, mou nted on the in- -"tfer1or'of the wall,"10, to slide transversely "of the-"stem, and having a"keyhole'slot,46,

through which the stein passes and through casing is a guide plate, 34,

the larger portion of. which it is free to reclprocate. The stem lsp'rovided with an annular groove, 17, which is allgned with the plate, 45, normally, andwhen the plate is so, slid that the grooved portion of the same is disposed within the narrower per- .tion of the slot, 46, obviously,longitudinal movement of the same is prevented.

The plate is provided with an operating lug, 4-8, projecting through a slot, 49', 111: the wall, 10. V 7 4 The embodiment presented in F 5', designed for doors which swing outwardly,

differs from the previously described form in that the stem isheld yieldablyinwardly as by a compression spring, 50, interposed between the wall, 9, and a suitable stop, 51,

on the stem. The guide member,34, is po- Y sitioned on the wall, 10, and in spaced-relaa tion to the latch plate, 45, the lug, 3?, being disposed between the said plates. The-plunger, 23, carries a fixed, depending arm, 52, positioned for engagement. by thelug, 37, and between which and one of the members, 22, is interposed a.compression]spring,;;26, whichserves to retract the plunger! 'In this form thewatchman, in rotating itheastem' Having thus describedour invention',-what we claim as new and desire tosecure by Letters Patent of theUnited States is) 1'; Y

1; In adeviceiof the lclasse described a latch-bolt,registering mechanism, andmeans movable to :one' 'p0Slt1OI1-*,t,()' unlatchathe' latch-bolt, and,zsubsequently,; to another H v positionto operatepsaid mechanism. a

2, In adevice of' theclassadescribedftt V latch-bolt,registering mechanism and means movable in. one direction :to unlatcl the latch-bolt and subsequentlyrg in another direction to operate said mechanismin,

VA registering: device for aclosure movable to opened and. closed- .positionsyincludinga suitable support adapted .to bemounted on the closure, a latch-bolt for releasably preventing opening ofthe Cl0SLlI'6,f-1glS- tering mechanism, and means for-releasing the latch bolt and movable inlthe general direction the closure movesto open to 0p crate said mechanism, whereby th'e'closure,

if unobstructed, will be opened whenksaid means-1s moved in the d1rect1on to operate said mechanism. 7

4. A registering device. .fon-ia'.closiure, movable to opened and; closed positions, including a suitable: support adapted-e i'to'sbe' 'mounted on thenclosure, allatolrgboltufor' releasably preventing opening of the closure, registering mechanism and means movable in a direction. different from that in which the closure moves to open to release the latch-bolt, and movable in the general direction the. closure moves to open to operate said mechanism, whereby the closure, if unobstructed, wvill be opened when said means is moved .in the direction to operate said mechanism. 7 5. A registering device forfa "closure, movable to opened and closed positions, including asuitable'support adapted to be mounted on the closure, a latch-bolt for releasably preventing opening of the closure,

registering mechanism and means movable in a direction different from that in which the closure moves to open to release the latch-bolt, and subsequently movable in the general direction the closure moves to open to operate said mechanism, whereby the closure, if unobstructed, will be opened when said means is moved in the direction to operate said mechanism. 7

6. A registering device for a closure movable to opened and closed positions, including a suitable support adapted to be mounted on the closure, a latch-bolt for releasably preventing opening of the closure, registering mechanism, and a member rotatable to release the latch-bolt and movable longitudinally after releasing the latch-bolt and in the direction the closure opens, to

operate said mechanism, whereby the closure, if unobstructed, will be opened when said member is moved in the direction to operate said mechanism.

7. A registering device for a closure movable to opened and closed positions, including a suitable support adapted to be mounted on the closure, a latch-bolt for releasably preventing opening of the closure,

registering mechanism, and a member rotatable to release the latch-bolt and movable after releasing the latch-bolt in the general direction the closure moves to open to operate said mechanism, whereby the closure will be opened, if unobstructed, when said member is moved in the direction to operate said mechanism.

8. A registering device for a closure movable to opened and closed positions, including a suitable support adapted to be mounted on the closure, a latch-bolt for releasably preventing opening of the closure, registering mechanism, and a member rotatable a distance in one direction to release the latchbolt, and after releasing the latch-bolt yieldable longitudinally to operate said mechanism, whereby the closure, if unobstructed, will be opened when said member is moved longitudinally.

9. A registering lock for a closure movable to opened and closed positions, including a casing adapted to be carried by the closure, a lock-bolt carried by the casing adapted to be extended .to prevent opening of the closure, a latch-bolt carried by the casing to releasably prevent openingof the closure, registering mechanism, .andmeans operabletorelease the latch-bolt, and subsequently movable in the direction the closure moves toopen, to ,actuatesaid, mechanism whereby the closure will be opened if the lock-bolt isnot extended. r i f 10. A registering lock fora closure, movable to opened and closed positions, including a casing adapted tobe carried, by the closure,-- a lock-bolt, carried by the. casing adapted to be extended to prevent opening of theclosure, a latch-bolt; carried by: the casinga-to releasably preventopening of the closure, registering mechanism, and operating means for the closure including means for releasing the latch-bolt and means movable in the direction the closure opens, to operate said mechanism, whereby the closure will be opened if the lock-bolt is not extended.

11. A registering lock for a swinging closure, including a casing adapted to be socured to the closure, a lock-bolt carried by the casing adapted to be extended to prevent swinging of the closure, a latch-bolt carried by the casing to releasably prevent swinging of the closure, registering mechanism, and means operable to release the latch-bolt and su sequently movable in the direction the 010- sure swings open, to actuate said mechanism,

whereby the closure will be swung open if cured to the closure, a latch-bolt carried by I the casing to releasably prevent swinging of the closure, registering mechanism and means operable to release the latch-bolt and subsequently actuate said mechanism and swing the closure open.

13. The combination with a closure movable to opened and closed positions, of a latch embodying a retractable latch-bolt normally extended to prevent opening of the closure, and registering mechanism operating means for retracting the latch-bolt and subsequently actuating said mechanism and swinging the closure open.

14. The combination with a closure movable to opened and closed positions, of a latchembodying a retractable latch-bolt nor mally extended to prevent opening of the closure, and registering mechanism operating means for retracting the latch-bolt and subsequently actuating said mechanism and swinging the closure open, and a detent coacting with said means to releasably prevent actuation of said mechanism.

15. The combination with a swinging closure, of a lock secured to the closure embodying a lock-bolt adapted to be extended to prevent swinging the closure open, a

rla't oh holt relelasatbly -"pretenting swingingv the Closure open; a registering mechanism mnc'l niesinsf' mov ble to release the latch-bolt and, subsequentl :ziotuz t'e' said- 'niechanism and. Swing the c osurefopen when the look-' ,boltisnotektended; L

ld't'hbolt; and subsequently in another direetion' to actuate said mechanism and'swing el'osure open the 10ok-bb1t is' not extended;

" 17. The combination with a swinging olosure and a lock thereon, including an extensible look-bolt and a latch-bolt for releasably preventing swinging of the closure, of registering mechanism ancla controlling stem rotatable torelease the latch-bolt and subsequently movable longitudinally in the direction the closureIsWings open, to actuate said 1 mechanism, whereby. the. closure 'Will be opened if the lock-bolt is not extended.

In testimony whereof, We have hereunto set our'hands this 24th dayof May, 1920.

HARRY'LEWIS. -OLYDE H. PETTEY;