US2672745A - Door lock - Google Patents

Description

March 23, 1954 G. MARCHE-rn 2,672,745

DooR Loox Filed July l5, 1950 1N VEN TOR. GIOVANNI MARC/157' 7'/ www Patented Mar. 2?, 1954 vUri-irse STATES PATENT' oFFice 2,672,745 i DO0R LOCK Giovanni Marchetti, San Diego, Calif. Application July 15, 1950, Serial No. 174,073 3` Claims: (Cl. 70-101) Myjinvention'relates to a door lock, andinorc with the door jamb surface IIb of the door 'jamb vi'iartcularly to a door loci:I in the jamb of a door, I' I. The face plate I c is provided with a central actuated by the sliding'bolt ci` a conventional opening Ib and secondary openings Ic .and Id, at lockinf'the door,` and the objects of my invenopposite sides thereof inv vertically spaced relation'are: 5 onship with said opening Ib The conventional First, to pro provides for additional shear strength in a door ings 9a, gb and 9c, respectively. lockr by providing auxiliary bolts which are dis- It 'will be noted that the door Ill is hinged relaposed atopposite sides of the conventional lock tive to the jamb I I, and that the conventional bolt, in vertically spaced relationship therewith;l lo lock bolt il is mounted in a conventional casing Second, to providea lock of this class which may 5a set into the door I Il.

be'used in cooperative relation with various con- In the casing I are bolts 2 and 3, which are ventional locks now inA use with very slight reciprocally mounted in the openings Ic and Id, changes inthe conventional lock face plate; respectively, and which are provided with gear Third,j to provide a lock of this class which oprit; rack portions 2a and 3a, engaging the large dierates very-easily and positively; ameter gear portions 4a and 5a of the gears 4 Fourth; to provide a lock of this class which and t, respectively. The small diameter gear isveryeasy to install; portions Ib and 5b engage opposed gear rack por- F'ifth, tov provide a lock of this classl which tions @a and 5b, respectively, ofthe gear rack greatly strengthens the locking structure of al gi) membert, which isslidably mounted at fits outer angular stability of doois, which prevents twist- Adiaoent the opening Ib is provided a hollow ing of the same when pi essure is exerted thereon; guide Ic, which supports the outer end 6c of the Sixth, to provide a lock of this class which ingear rack member 6 during its reciprocal movecorporates three locking bolts, which are all actu- 3 ment, as indicated by dash lines in Fisr l of the ated by a` single key; and drawings.

Seventh, to provide a lock of this class which Theoperationofimy door lockis substantially is.v very simple and economical of construction, asfollows: ellicient in operation, and which will not readily When the door IIJ is closed relative to the jainb deteriorate or get out of order. II, and a key is inserted in the casing ila of the With these and other objects in view, as will d conventional lock the key is turned causing exappeai hereinafter, my invention consists of cer tension of the conventional lock bolt 8 to the dash characters of reference thereon, forming a part to cause rotation of the gear portions la and 5a, of this application, in which: which engage the gear racks 2a and 3a to cause Fig. l is a vertical sectional view of my lock, l the bolts 2 and 3 to be extended to the dash line shown installed in connection with a door and to positions C and D, in which positions these bolts door jamb; and Fig. 2 is a plan sectional view, are extending' through the openings 9b and 9c in taken ii om the line 2-2 of Fig. l. the conventional lock face plate 9 In such ex- Similar characters of reference iefei to simitended position the bolts 2 and 3 are operatively lai parts and portions throughout the several supplemental to the bolt 8 all of which strengthviews of the drawings. ii ens the locking aiiangement of the door ID It The Casing I, bolts 2 and 3, gears 4 and 5, gear will be understood that in most door locks the rack member 5, spring l', conventional lock bolt 8, bolt 8 is restrained against retraction until reconventional lock face plate 9, door IG, and door leased by a key. The bolt 8 being thus restrained jamb II, constitute the principal parts and por holds the rack member in the dotted line position tions of my door lock. "10 shown in Figure l, until a key is used to retract In the construction of my door lock, I have the bolt 8. provided a substantially rectangular box-shaped It will he noted that when the conventional casing I, which is adapted to be set into the struclock bolt 8 is retracted by the key, the spring 1,

ture of the door jamb I I, and this casing I is w connected at its one end to the gear rack memprovided with face plate Ia, substantially flush @D ber 6 and at its opposite end to the casing by pin if, is forced backwardly into the solid line position as shown in Fig. l of the drawings, which concurrently retracts the bolts 2 and 3 from the openings 8b and Sic in the conventional lock face plate 9.

that during the rotation of the gears 4 and 5 they are maintained 1n position in the casing l by means llc and 5c, which are xed to the inner side oi the casing l.

Though I have shown and described a particular construction, combination and arrangement of parts and portions, I do not wish to be limited to this particular construction, combination and arrangement, but desire to include in the scope of my invention the construction, combination and arrangement substantially as set forth in the appended claims.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent is:

l. A locking mechanism ior locking a member against swinging movement relative to a second member, comprising opposing loc-k casings naving apertured face plates in opposing relation, the apertures in one iace plate being opposite to the apertures in the other tace plate, a lock bolt operatively mounted in one casing and extendable from one face plate through the other face plate, said bolt being of the type which is restrained against retraction until released by a key, a spring-biased bolt-operated member operably mounted in the other casing and positioned for being engaged by said bolt and driven i wardly of said other casing against spring pressure when said bolt is extended, a secondary bolt operably mounted in said other casing, and mechanical linking means connecting said member and said secondary bolt for extending said secondary bolt through both said face plates when said member is driven inwardly.

2. A locking mechanism for locking. a member against swinging movement relative to a second member, comprising opposing lock casings having apertured face plates in opposing relation, the apertures in one face plate being opposite to the apertures in the other face plate, a lock bolt operatively mounted in one casing and extendable from one face plate through the other face plate,

means of the which is restrained against retraction a key, a spring-biased bolt-operated member operably mounted in the other casing and positioned for being engaged by said bolt and driven inwardly of said other casing against spring pressure when said bolt is extended, a secondary bolt operably mounted in said other casing, and mechanical linking means connecting said member and said secondary bolt for extending said secondary bolt through both said face plates when said member is driven inwardly, said member including a rack and said mechanical linking means comprising a gear means operated by said rack and operating said secondary bolt.

said bolt being of for locking a member against swinging movement relative to a second member, comprising opposing lock casings having apertured face plates in opposing relation, a lock bolt operatively mounted in one casing and extendable from one iace plate through the other face plate, said bolt being of the type which is restrained against retraction until released by a key, a spring-biased bolt-operated member operably mounted in the other casing and positioned for being engaged by said bolt and driven inwardly of said other casing against spring pressure when said bolt is extended, a secondary bolt operably mounted in said other casing, and mechanical linking means connecting said member and said secondary bolt for extending said secondary bolt through both said face plates when said member is driven inwardly, said member including a rack and said mechanical linking means comprising a gear means operated by said rack and operating said secondary bolt, said member `having a second rack in opposing relation to the first mentioned rack, another secondary bolt similar to the first mentioned secondary bolt, another gear means similar to said gear means and operated by said second rack, said lock bolt being manually operated as by a key.

GIOVANNI MARCHETTI.

Name Dalziel et al.

Date June 9, 1936 Number

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