US3896644A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Double spin knob door lock
Assignee: Individual
•
Filing: 1974-10-11
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Granted: 1975-07-29
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Expires: 1994-10-11
Abstract
Abstract This double spin knob door lock is so designed as to permit a door to be locked from the inside as well as from the outside. The lock bolt is blunt or squared and is always spring-biased to its extended or locking position and thus may bump against a bumper plate that is provided on the door frame adjacent the keeper plate when the door is moved toward closed position without first retracting the bolt. A lock cylinder is used on the inside knob that has two rows of tumblers or key removing positions, one for spin and one for bolt operation instead of a single tumbler row lock cylinder as used on the outside knob. The outside knob preferably has only a one row tumbler lock cylinder. The knobs can be removed from the door lock assembly by one who has both the key and a special tool to depress a catch lying in an open slot in the knob sleeve projection.
Inventors
- 👤 Charles E Nagy
- 👤 John F Nagy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 06:46
CPC Classifications
E; E05; E05B; E05B63/00; E05B63/0017; Y; Y10; Y10S; Y10S70/00; Y10S70/60; Y10T; Y10T292/00; Y10T292/08; Y10T292/096; Y10T292/0969; Y10T292/097; Y10T292/0977; Y10T292/85; Y10T292/869; Y10T70/00; Y10T70/50; Y10T70/5093; Y10T70/5155; Y10T70/5199; Y10T70/5372; Y10T70/5385; Y10T70/5389; Y10T70/5496; Y10T70/5611; Y10T70/5757; Y10T70/5765; Y10T70/5805; Y10T70/5819; Y10T70/5823
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
509 words
A double spin knob door lock comprising two axially-opposing key-operated hand knob assemblies, assembled casing parts enclosing portion of the hand knob assemblies and adapted to fit within a cutout lock opening in a door, as a unit one of the hand knob assemblies extending from inside of the door and the other hand knob assembly extending from outside of the door, each of said hand knob assemblies having a hand knob and an internal main body part connected to the hand knob to be turnable therewith, radially adjustable key bar means on body part, a key-operated tumbler lock cylinder extending axially through the hand knob and a square operating shaft extending inwardly therefrom and through the main body part and freely turnable therein, a turnable camtrack supporting member connected to the shaft to be driven thereby and having cam-track thereon, said cam-track supporting member turnable relative of the main body part independently thereof to positively radially-adjust the key bar means on the body part, said cam track supporting means having a square opening with which saId tumbler lock square operating shaft drivingly engages to turn the turnable cam-track supporting means and the said cam-track operable upon the radially-adjustable key bar means to positively thrust the key bar means radiallyoutwardly or positively-inwardly as a door key is inserted into the key-operated tumbler lock cylinder and the square shaft turned thereby, an internally-serrated ring lying inwardly of the main body part with serrations with which the key bar means will have drive engagement when the key bar on cam-track supporting means is radially-outwardly adjusted by the turning of the tumbler lock cylinder, a drive plate disposed inwardly of and lying adjacent to the serrated ring, a spacing ring disposed between the drive plates of the two opposing assemblies to provide space therebetween, means for securing together the spacing ring, the serrated rings and the drive plates of the associated hand knob assemblies to provide a common lock bolt operating mechanism, means for mounting the common lock bolt operating mechanism in axial relationship with and between the hand knob assemblies and in said casing parts for rotation with respect thereto, a lock bolt assembly extending laterally from the common lock bolt operating mechanism, and adapted to extend through the side edge of the door for engagement with a door frame keeper plate in the door frame opening, said lateral lock bolt assembly having a vertically-extending slot, a work pin extending between the drive plates of the common lock bolt operating mechanism and through the vertically-extending slot of the lock bolt assembly to retract and extend the same and means for securing the assembled casing enclosing parts and the hand knob assemblies upon the door whereby the door will be locked from both sides thereof by virtue of the key bar means of the hand knob assemblies being retracted radially-inwardly out of engagement from their serrated rings of the common lock bolt operating mechanism and the hand knobs of both inside and outside knob assemblies left free to spin upon the door.
Claim 2
Dependent Claim
509 words
A double spin knob door lock comprising two axially-opposing key-operated hand knob assemblies, assembled casing parts enclosing portion of the hand knob assemblies and adapted to fit within a cutout lock opening in a door, as a unit one of the hand knob assemblies extending from inside of the door and the other hand knob assembly extending from outside of the door, each of said hand knob assemblies having a hand knob and an internal main body part connected to the hand knob to be turnable therewith, radially adjustable key bar means on body part, a key-operated tumbler lock cylinder extending axially through the hand knob and a square operating shaft extending inwardly therefrom and through the main body part and freely turnable therein, a turnable camtrack supporting member connected to the shaft to be driven thereby and having cam-track thereon, said cam-track supporting member turnable relative of the main body part independently thereof to positively radially-adjust the key bar means on the body part, said cam track supporting means having a square opening with which saId tumbler lock square operating shaft drivingly engages to turn the turnable cam-track supporting means and the said cam-track operable upon the radially-adjustable key bar means to positively thrust the key bar means radiallyoutwardly or positively-inwardly as a door key is inserted into the key-operated tumbler lock cylinder and the square shaft turned thereby, an internally-serrated ring lying inwardly of the main body part with serrations with which the key bar means will have drive engagement when the key bar on cam-track supporting means is radially-outwardly adjusted by the turning of the tumbler lock cylinder, a drive plate disposed inwardly of and lying adjacent to the serrated ring, a spacing ring disposed between the drive plates of the two opposing assemblies to provide space therebetween, means for securing together the spacing ring, the serrated rings and the drive plates of the associated hand knob assemblies to provide a common lock bolt operating mechanism, means for mounting the common lock bolt operating mechanism in axial relationship with and between the hand knob assemblies and in said casing parts for rotation with respect thereto, a lock bolt assembly extending laterally from the common lock bolt operating mechanism, and adapted to extend through the side edge of the door for engagement with a door frame keeper plate in the door frame opening, said lateral lock bolt assembly having a vertically-extending slot, a work pin extending between the drive plates of the common lock bolt operating mechanism and through the vertically-extending slot of the lock bolt assembly to retract and extend the same and means for securing the assembled casing enclosing parts and the hand knob assemblies upon the door whereby the door will be locked from both sides thereof by virtue of the key bar means of the hand knob assemblies being retracted radially-inwardly out of engagement from their serrated rings of the common lock bolt operating mechanism and the hand knobs of both inside and outside knob assemblies left free to spin upon the door.
Claim 3
Dependent Claim
214 words
A double spin knob door lock as defined in claim 1 and said radially-extending guide means of each hand knob assembly including a plurality of radially-extending guide slots on the body part angularly spaced from one another and the key bar means including a plurality of key bars radially adjustable on the inner face of the cam-track supporting means of the door knob assembly angular-spaced from one another thereabout and respectively radially slidable in the respective guide slots said cam track means including a plurality of cam tracks carried upon the turnable cam-track supporting means angularly spaced from one another and respectively operably connected with the respective key bars, a substantially square-shaped cam lobe plate having alternate raised corner and side cam edge portions engageably with the inner ends of the key bars as they are thrust outwardly and retracted inwardly by the turning of the cam-track disc to further positively retain their adjusted positions along with their cam-tracks, said cam lobe plate lying centrally flush against the inner face of the cam-track supporting means and likewise drivingly connected to the cylinder tumbler lock square shaft to operate in unison with the cam-track supporting, whereby to hold the key bars both iin their outwardly-extended and internally-serrated ring engaging positions and in their inwardly-retracted positions.
Claim 4
Dependent Claim
156 words
A double spin knob door lock as defined in claim 1 and the body part of at least one of the hand knob assemblies including an outwardly-extending sleeve projection and the hand knob thereof having a sleeve projection telescopically-overlapping the sleeve projection of the body part and a depressable tool accessible spring latch carried on one of the sleeve projections and engageable with the other sleeve projections for interlocking the two sleeve projections together and means on the lock cylinder square shaft and operable by the door key inserted into tHe lock cylinder and the turning of the square shaft thereof to render the spring latch operable for releasing the hand knob with key lock cylinder from the body part sleeve projection, whereby the hand knob of the assembly will be key locked upon the body part be releasable from the body part for repair or replacement of the cylinder tumbler lock of the hand knob.
Claim 5
Dependent Claim
88 words
A double spin knob door lock as defined in claim 1 and a hair pin-like spring fixedly carried upon one side of the laterally extending lock bolt assembly with its arms extending respectively inwardly under and over the work pin in the vertically-extending slot thereof to normally centralize the pin therein and to hold the common lock bolt operating mechanism including the serrated rings against unintended rotation when the key bar means of the hand knob lock assemblies is free thereof and the door knobs free to spin.
Claim 6
Dependent Claim
102 words
A double spin knob lock as defined in claim 1 and said means for securing the casing parts and hand knob assemblies to the door wherein the casing parts have outwardly-extending externally-threaded central sleeve projections and attaching plates respectively having internally-threaded sleeve portions, and said attaching plates being threaded onto the threaded sleeve projections of the casing parts and respectively adjustable thereupon for flush tight clamping engagement with the respective inner and outer faces of the door and fastening means extending through the door connecting the attaching plates together and upon and to the respective inner and outer faces of the door.
Claim 7
Dependent Claim
100 words
A double spin knob door lock as defined in claim 5 and said hand knobs assemblies respectively having inwardly-extending sleeve projections, cover plates respectively detachably secured to periphery of the attaching plates and respectively having central openings for receiving the respective sleeve projections of the hand knobs, and said hand knob sleeve projections respectively having annular ribs extending thereabout and engageable by the edges of the central opening of the cover plates to prevent the easy removal and detachment of the cover plates from the attaching plates and the backing off of the same onto the hand knob sleeve projections.
Claim 8
Dependent Claim
186 words
A double spin knob lock as defined in claim 6 and the body part of each of the hand knob assemblies including an outwardly-extending sleeve projection, and the hand knob having a sleeve projection telescopically overlying the sleeve projection of the body part, and spring latch releasable means carried on one of the sleeve projections of each hand knob assembly and engageable with the other sleeve for interlocking the two sleeve projections of the assembly together, and means on the square shaft of each of the cylinder tumbler locks of each hand knob assembly and operable by the door key inserted into the cylinder tumbler lock and the turning of the square shaft thereof to release the means between the hand knob from the body part, whereby the outer cover plates will be backed up by the annular ribbed key locked hand knob upon their assemblies and may be released from the knob sleeves only upon the use of the key use for releasing the hand knobs from the body part sleeves of the hand knob assemblies and thereby key locked with the hand knobs thereupon.
Claim 9
Dependent Claim
113 words
A double spin knob lock as defined in claim 1 and at least the cylinder tumbler lock of one of the hand knob assembly having two tumbler set projections angled apart from each other to allow for the insertion and withdrawal of the key at either of two positions on the face of the knob, one position being to condition the assembly for the spinning of the knob for effectively locking the door and the other position being to condition the assembly for turning the knob at any time by leaving the key bar means in engagement with the internally-serrated ring, whereby the door may be opened without the use of the key.
Claim 10
Dependent Claim
120 words
A double spin lock door lock as defined in claim 1 and biasing means normally extending the lock Bolt assembly out of the edge of the door into the door frame keeper and a bumper plate secured to the door frame adjacent to the door frame keeper and adapted to be struck by the side of the lock bolt assembly upon the door being directed from the inside toward its closing position, whereby to warn the occupant for the need of a key upon leaving the premises upon the need for a key to be used upon the outside knob assembly to finally close the door and condition the outside knob to spin freely and in effect lock the door.
Claim 11
Dependent Claim
343 words
A double hand knob door lock comprising two axially-opposing hand knob assemblies adapted to fit with a cutout lock opening in a door, one of said hand knob assemblies extending from inner side of the door and the other hand knob assembly extending from outer side of the door, at least one of said hand knob assemblies including a hand knob and a key-operated cylinder tumbler lock fitted therein, a spring-biased lock bolt assembly extending laterally from between the hand knob assemblies within the opening and through the edge of the door for engagement with a door jamb plate in a door frame, a common lock bolt operating mechanism rotatably mounted in the door opening between the two hand knob assemblies, said spring-biased lock bolt assembly having a vertically-extending slot, a pin carried by the common bolt operating mechanism extended through the vertically-extending slot in the bolt assembly to retract the lock bolt assembly, each of said hand knob assemblies being respectively connected to the common bolt operating mechanism to rotate the same and selectively operable to retract the lock bolt assembly by one or the other of the hand knob assemblies, the said one key-operated hand knob assembly further having a body part with a radially-extending key bar guide slot thereon, a radially adjustable key bar operable in the body part key bar guide slot, cam means turnable on the body part and connected to the key bar to positively extend and retract the key bar, said rotatable common bolt operating mechanism having radially-inwardly extending projection means for engagement of the key bar therewith, and a shaft extending from the key-operated cylinder tumbler lock in the hand knob to the cam means and operable by a key to turn the same so as to extend or retract the key bar into engagement with the radially-inwardly projection means whereby the one hand knob can be operated by a key to retract the lock bolt assembly and so as to permit the knob to spin free of its assembly, thereby effectively locking the door.
Claim 12
Dependent Claim
343 words
A double hand knob door lock comprising two axially-opposing hand knob assemblies adapted to fit with a cutout lock opening in a door, one of said hand knob assemblies extending from inner side of the door and the other hand knob assembly extending from outer side of the door, at least one of said hand knob assemblies including a hand knob and a key-operated cylinder tumbler lock fitted therein, a spring-biased lock bolt assembly extending laterally from between the hand knob assemblies within the opening and through the edge of the door for engagement with a door jamb plate in a door frame, a common lock bolt operating mechanism rotatably mounted in the door opening between the two hand knob assemblies, said spring-biased lock bolt assembly having a vertically-extending slot, a pin carried by the common bolt operating mechanism extended through the vertically-extending slot in the bolt assembly to retract the lock bolt assembly, each of said hand knob assemblies being respectively connected to the common bolt operating mechanism to rotate the same and selectively operable to retract the lock bolt assembly by one or the other of the hand knob assemblies, the said one key-operated hand knob assembly further having a body part with a radially-extending key bar guide slot thereon, a radially adjustable key bar operable in the body part key bar guide slot, cam means turnable on the body part and connected to the key bar to positively extend and retract the key bar, said rotatable common bolt operating mechanism having radially-inwardly extending projection means for engagement of the key bar therewith, and a shaft extending from the key-operated cylinder tumbler lock in the hand knob to the cam means and operable by a key to turn the same so as to extend or retract the key bar into engagement with the radially-inwardly projection means whereby the one hand knob can be operated by a key to retract the lock bolt assembly and so as to permit the knob to spin free of its assembly, thereby effectively locking the door.
Claim 13
Dependent Claim
139 words
A double hand knob door lock as defined in claim 10 and said body part having an outwardly-extending sleeve projection and the key operated hand knob having an inwardly-extending sleeve projection telescopically overlying the sleeve projection of the body part, said shaft extending through the sleeve projections, releasable means carried on one of the sleeve projections for normally interlocking the two sleeve projections together and said shaft having a tumbler means operable therewith to keep the releasable means engaged but permitting disengagement only by use of the key that turns the shaft whereby the knob will be key locked upon its assembly and mey be removed from its assembly only by its key for repair or replacement of the cyclinder lock and for the purpose of changing the keys or the disassembly of the entire lock from the door.
References Cited (Backward Citations)
US159257A
Cited
US1374908A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-07-28 | 1979-01-27 | 1979-07-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-07-28 | 1983-01-27 | 1983-07-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-07-28 | 1987-01-27 | 1987-07-29 | $7700.00 | Window Closed / Lapsed |