US1360289A - Auxiliary lock - Google Patents

Description

J. F. GUNDERSON. AUXILIARY LOCK. APPLICATION FILED OCT. 27.1919.

1 ,360,289. Patented NOV. 30, 1920.

2 SHEETS-SHEET l- J. F. GU'N'DERSON.

AUXILIARY LOCK.

APPLICATION men 00?.27. 1919.

1,860,289, Patented Nov. 30, 1920.

2 SHEETS-SHEET 2.

"Eu 2 in? 314mm] for :Iosgphf? fi'lundensa without the JOSEPH F. GUNDERSON, 0F SEATTLE, WASHINGTON.

AUXILIARY LOCK.

Specification of Letters Patent.

Patented Nov. 30, 1920.

Application filed October 27, 1919. Serial No. 333,533.

To all whom it may concern:

Be it known that I, Josnrn F. GUNDEBSON, a citizen of the United States, residing at Seattle, in the county of King and State of lVashin ton, have invented certain new and useful mprovements in Auxiliary Locks; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to locks cially to an auxiliary door lock.

It is one of the objects of the present in vention to provide an auxiliary or detachable door lock that can be readily attached to the usual or common form of door lock without in any way materially injuring the lock or defacing it, or altering the lock mecha nism, or the keys thereof, other than by merely flattening or shaping the entering end of the common key so that it will cooperate with the female coupler forming a and espepart of this invention. 25

Another object of this invention is to provide an auxiliary or supplementary lock with a complementary key, the look when a )plied serving to prevent the removal of t 1e usual or ordinary key of the permanent lock in the door.

Again it is an object of this invention to provide a device of this character that is, at

once, simple, substantial, reliable, and that can be quickly applied and and that cannot be readily It is an important object quickly removed, tampered with.

of thls invention to provide an auxiliary lock that can be easily connected to the usual or ordinary door lock such as is commonly found in hotel doors for the purpose of securing the usual key in the lock on the inside of the door and thus prevent entry into the room application of a proper keyto the supplementary or auxiliary lock.

With these and other objects in view as will be rendered manifest from the following specification, the invention consists of the construction, the combination and in details and arrangements of the parts as more particularly set forth relative to the embodiment of the invention illustrated in the accompanying drawings.

dherein. Figure 1 is a perspective view of the auxiliary lock as applied to the outside of the door, the key being removed.

Fig. 2 is an edge elevation of the usual tl'on'of a door D lock and showing in sectional view the auxiliary lock applied to the outside of the est utcheon plate of the lock.

Fig. 3 shows the auxiliary lock in elevation and detached from the door.

Fig. 4 is a side elevation of the fastening bolt with the barrel housing removed from its casing.

F ig.- 5 is a the housing.

Fig. 6 is a perspective view of the housing. Fig. :7 is a perspective view of the box or casing of the auxiliary lock.

Fig. 8 is a perspective view of the inner barrel or cylinder member.

Fig. 9 is a perspective view of the outer cylinder member.

Fig. 10 is a perspective view of the female socket member.

In the embodiment of the invention a plan view of the lock bolt of is provided with a 100 L of the usual or common form having inside and outside escutcheon plates S and into which look there may be inserted the usual and suitable key K, which in the present instance has itsinner end flattened or made otherwise complementary to fit a socket piece or coupler 2 having an a erture complementary to the cooperative en of the key K and also having an aperture 3 at its other end to pass onto and be adjustable along the stem 4 of the inner section of a cylinder 5 which is rotatably mounted on a housing or barrel 6. The outer face of the cylinder section 5 is provided with a suitable combination device 7 to receive the complementary end of the key 8 of the auxiliary lock, this key being insertible through an aperture formed in the outer face of a casin 10 which overlaps and holds in its cham er the outer section 11 ot the cylinder, and through which the key 8 is insertible to engage this complementary device 7 in the end of the coupler turn,- ing cylinder section 5. r

In order to adapt this lock to doors of different thicknesses, the coupler 2 is longitudinally adjustable along stem 4 of the cylinder 5 and may be fastened at such suitable positions as by means of a set screwlQ, which when the auxiliary lock structure is applied to the door will extend outwardly as shown in Fig. 2. but when the auxiliary lock key 8 is turned to rotate the coupler 2 through means of the cylinder sections and thus turn the key K. the set screw 12 assumes an uppermost position, and will then also pass up behind the outer escutcheon plate S and serve to hold the parts in assembled position.

v In orderto secure the auxiliary lock barrel in position, and prevent the removal of any of the parts thereof, except the key 8.

From the door from the outer side thereof,

a a fasteningbolt 15 is provided, and this has on its inner end a nut 16 designed to be jammed up against the inner escutcheon plate S thus'drawing a nut 17 on its outer end up against the flange 6 of the barrel 6, this flange having an external thread 6* and engaging complementary threads formed therefor externally on the shell or casing '10. -It is understood that the flange 6 of the barrel 6 is provided with an aperture as .at'6 to take the fastening bolt 15, this bolt ,passing through an aperture in a locking plate 18, which is inovably connected as by .a pivotal device or hinge 19 to one edge, of the flange 6, and having at a diametrically opposite point a tongue or lug 20 to enter a notch 21 in the edge of the casing 10, so that after the nut 17 has been adjusted to the desired position as shown in Fig. 4, the easinglO is thenlscrewed onto the threads 6* and the locking plate 18 is closed against the 'back of the body or barrel 6, the tongue 20 engaging the notch walls 21, preventing a relative rotation of the casing 10 and barrel 6. The extending end of the bolt 15 is then inserted into the slot of the keyhole 22, the key K being turned to an oblique position and the socket or connecting coupler is passed into the round end of the keyhole and prevents the withdrawal of the key K, by

preventing its return to a vertical position, but'does .not interfere with the revolution of the key sufiiciently to throw or unthrow the bolt.

the bolt of the lock.

From the above it will be seen that after the key K has been altered to the slight degree necessary to make it cooperative with the coupler member 2, it is only then necesessary to apply the auxiliary lock structure in the manner abovedescribed, and after that the key 8 can be inserted in the auxiliary lock casing to turn the cylinder sections 5-41 and thus rotate the key K to throw Since the lock has previously been attached on the outside of the door and fastened by means on the inside of the door. it will be seen that the auxiliary lock cannot be removed, and the door cannot be unlocked until the proper key 8 is applied.

The fastening bolt 15 in passing through the slot of the keyhole is preferably fiattened throughout its length, so that it may be given width sufiicient to have the required strength to hold the auxiliary lock in place, still by being flattened it may be passed through, the slot and over the usual lug obstruction provided to prevent use of keys other than the one specially prepared for the lock. The threads will appear only on the two widest portions of the bolt.

It will be understood that the regular key being held in the regular lock, can be used from the inside of the room to throw the regular lock bolt, and serve as a common night latch.

I claim:

1. The combination of a lock having a key, and a supplementary lock with means to engage and turn the said key to throw or withdraw the bolt of the lock and having means .for attaching said supplementary lock and at the same time preventing the withdrawal of the key from its lock.

2. The combination of a lock having a key, and a supplementary lock with means to engage and turn the said key to throw or withdraw the bolt of the lock and having means for preventing the withdrawal of the key from its look but not interfering with the turning of the key to control the bolt.

The combination of a lock having a key, and a supplementary lock with means to engage and turn the said key to throw or withdraw the bolt of the lock, said supplementary lock attachable to the lock carrying Ttrpcture on the side opposite to the usual 4. The combination of a lock having a key, and a supplementary lock with means to engage and turn the said key to throw or withdraw the bolt of the lock, said supplementary lock attachable to the lock earrying structure on the side opposite to the .usual lock and without in anywise mutilating the structure, or the lock parts.

5. Locking mechanism comprising a lock with a bolt and provided with a key hole, a key to throw or withdraw the bolt, an auxiliary means to actuate the key from the opposite side of the mechanism, and means for attaching said auxiliary through said keyhole so as to prevent the withdrawal of said key.

6. An auxiliary lock attachable to a door comprising a tumbler-bolt lock with keyholes, having means to actuate the key of the bolt lock from the outer side of the door, and means for attaching said auxiliary through the keyhole of said bolt lock.

7. An auxiliary lock attachable to a door having a tumbler-bolt key lock, and provided with a through keyhole, means to actuate the key of the bolt lock from the outer side of the door and means for preventing having a tumbler-bolt lock with keyholes and having means to actuate the master key of the bolt look from the outer side of the door and a fastening member adapted to pass through the keyholes of the tumbler bolt lock for removably securing the auxiliary lock in place.

having a tumbler bolt lock, and having means to actuate the master key of the bolt from the outer side of the door and means for removably securing the auxiliary lock in place and which means is insertible through the key hole of the door and lock organization.

10. An auxiliary look attachable to a door having a tumbler-bolt lock, comprising a barrel,a set of cylinder sections coaxially arranged therein, a casing inclosing the barrel, means for locking the casing and barrel againstrotation, and a coupler engageable with the usual key of the lock to actuate the same, said sections forming a combination set for a supplementary key by which said member may be actuated.

11. An auxiliary lock attachable to a door having a tumbler bolt lock, comprising a barrel, a set of cylinder sections coaxially rel, means for locking the casing and barrel against rotation, and a coupler engageable with the usual key of the lock to actuate the same, said sections forming a combination set for a supplementary key by which said member may be actuated and a threaded stem projecting from one side of the device and adapted to be passed 'into the keyhole in the door and having a clamp element to secure the Whole in Jlace on the door.

In testimon whereof I J SEPH F. GUNDERSON.

allix my signature.

arranged therenu a casing inclosingqthe bar 9. An auxiliary lock attachable to a door

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