US3042437A - Passage set - Google Patents

Passage set Download PDF

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Publication number
US3042437A
US3042437A US27625A US2762560A US3042437A US 3042437 A US3042437 A US 3042437A US 27625 A US27625 A US 27625A US 2762560 A US2762560 A US 2762560A US 3042437 A US3042437 A US 3042437A
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United States
Prior art keywords
spindle
mounting plate
knob
spring
fingers
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Expired - Lifetime
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US27625A
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Walter J Duvall
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    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05C—BOLTS OR FASTENING DEVICES FOR WINGS, SPECIALLY FOR DOORS OR WINDOWS
    • E05C1/00—Fastening devices with bolts moving rectilinearly
    • E05C1/08—Fastening devices with bolts moving rectilinearly with latching action
    • E05C1/12—Fastening devices with bolts moving rectilinearly with latching action with operating handle or equivalent member moving otherwise than rigidly with the latch
    • E05C1/16—Fastening devices with bolts moving rectilinearly with latching action with operating handle or equivalent member moving otherwise than rigidly with the latch the handle or member moving essentially in a plane substantially parallel to the wing or frame
    • E05C1/163—Cylindrical or tubular latches
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T292/00—Closure fasteners
    • Y10T292/08—Bolts
    • Y10T292/096—Sliding
    • Y10T292/0969—Spring projected
    • Y10T292/097—Operating means
    • Y10T292/0977—Cam
    • Y10T292/0989—Plural rollback elements directionally selectively effective
    • Y10T292/0991—On a tubular member
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T292/00—Closure fasteners
    • Y10T292/93—Latch spindles

Definitions

  • a further object of my invention is to provide for simple and rapid adjustment of the passage set to any thickness of door without the use of screw threading.
  • My invention also comprises such other objects, advantages and capabilities as will later more fully appear and which are inherently possessed by my invention.
  • FIG. 1 is an isometric view of my passage set assembled
  • FIG. 2 is a sectional view of the same taken on line 22 of FIG. 1;
  • FIG. 3 is a sectional view of the same taken on line 3--3 of FIG. 1;
  • FIG. 4 is a sectional view of the same taken on line 4--4 of FIG. 1;
  • FIG. 5 is a sectional view of the same taken on line 55 of FIG. 2;
  • FIG. 6 is an isometric view of the spindle, showing the mounting spring for the removable knob at one end and a stationary knob at the other end;
  • FIG. 7 is a side elevational view, partly in section, of the attached mounting plates and mounting screws
  • FIG. 8 is a sectional view taken on line 8-8 of FIG. 1;
  • FIG. 9 is an isometric view of the removable knob.
  • a preferred embodiment which has been selected to illustrate my invention comprises a pair of manually rotatable knobs 1t) and 11, which are mounted on the opposite ends of an elongated hollow cylindrical spindle 12.
  • the knob 10 is permanently mounted on one end of the spindle 12, while the other knob 11 is removably mounted on the opposite end of the spindle 12.
  • the end of the spindle 12 which carries the removable knob 11 is provided on its upper end with a pair of substantially rectangular openings 68 and on its lower end with a slot 61.
  • a circular leaf spring 62 is mounted concentrically within the end of the spindle 12 with its opposite ends disposed adjacent the openings 68.
  • the leaf spring 62 carries at its midportion a tab 63 which extends through the slot 61 in the spindle 12.
  • the leaf spring 62 is installed in the end of the spindle 12 by passing it through both of the openings 68 and then pinching its ends to snap the spring 62 into place.
  • the shank of the knob 11 is provided with a slot 64 which is adapted to receive the tab 63 of the spring 62.
  • the tab 63 In order for the shank of the knob 11 to pass over the end of the spindle 12, the tab 63 must be depressed to a position wherein it no longer protrudes beyond the surface of the spindle 12. When this is done, the ends of the leaf spring 62 engage the upper sides of the open ings 60 in order to limit the inward movement of the tab 63 and to prevent the spring 62 from being displaced.
  • the ends of the leaf spring 62 are bent outwardly so that they extend into the openings 60 and are aligned with the opposite longitudinally extending sides of the openings 60.
  • a pair of escutcheon plates 13 and 14 are disposed in wardly from the knobs 10 and 11.
  • the escutcheon plates 13 and 14 fit over a pair of mounting plates 15 and 16.
  • the first mounting plate 15 is provided with a pair of elongated cylindrical projections 17 and 18 which extend inwardly at a right angle from the surface of the mounting plate 15. These projections 17 and 18 are hollow and are internally screw threaded. The projections 17 and 18 are spaced 180 apart from each other.
  • each of the projections 17 and 18 Spaced from each of the projections 17 and 18 is a post 19, which has an oblong rectangular cross section and which is substantially longer than the projections 17 and 18.
  • the center of the mounting plate 15 is pro vided with a circular opening 20.
  • the side of the opening 28 Opposite from the post 19 is provided with a notch 21.
  • the projections 17 and 18 and the post 19 are all preferably formed as integral parts of the mounting plate 15.
  • the second mounting plate 16 is provided with a pair of elongated semi-circular members 22 and 23, which extend inwardly at a right angle from the surface of the mounting plate 16. Disposed within the lower portions of the semi-circular members 22 and 23 are a pair of shorter hollow cylindrical members 24 and 25. The center of the mounting plate 16 is provided with a central opening 26. The opposite sides of the opening 26 are provided with a pair of notches to permit the mounting plate 16 to pass over the tab 63 which is used to hold the knob on the spindle.
  • a pair of stop members 27 and 28 are disposed adjacent the cylindrical members 24 and 25 on opposite sides of the opening 26.
  • the stop members 27 and 28, cylin drical members 24 and 25 and semi-circular members 22 and 23 are all connected together and are preferably formed as integral parts of the mounting plate 16.
  • the midportion of the spindle 12 is cut away to leave an arcuate portion 31 of less than The portion of the spindle 12 adjacent the arcuate portion 31 is provided toward one end of the spindle 12 with a pair of outwardly projecting lugs 32 and 33 and toward its. opposite end with a single outwardly pressed stoptab 34.
  • the bolt assembly comprises a bolt 35, a face plate 36, a back-up plate 37 and a cylindrical housing 38, which extends inwardly from the back-up plate 37.
  • the inner end of the housing 38 is closed by a circular member 39, which has an integral bifurcated portion 40 which extends inwardly from the inner end of the housing 38.
  • An opening 41 having an oblong rectangular cross section extends transversely through the end of the bifurcated member 40.
  • Each of a pair of identically formed elongated fingers 42 carries at its outer end a hook 45.
  • the fingers 42 are mounted side by side with their hooks 45 facing each other.
  • the fingers 42 extend through the bifurcated portion 40 and through openings in the circular member 39 into the housing 38.
  • the end of the fingers 42 which are disposed within the housing 38 are provided with substantially right angular tabs 43 which are disposed within the bolt 35, ex-
  • a coil spring 46 is disposed within the housing 38 surrounding the fingers 42. One end of the spring 46 bears against the circular member 39 and the other end bears against the end of the bolt 35. The spring 46 acts to normally urge the bolt 35 toward an outward posi tion and to retract the fingers 42 within the housing 38.
  • the first mounting plate 15 may be disposed in one of two selected positions in order to adjust the set for substantially any size of door now in use. This adjustment is accomplished by positioning the mounting plate 15 in one position wherein it abuts against the outermost lug 32 on the spindle 12 for doors of thicknesses from 1 /2" to 1 /8", including the popular 1%" thickness. For doors of 1%" to 1 /2 thickness, including the popular 1% thickness, the mounting plate 15 is rotated until its notch 21 is aligned with the lugs 32 and 33. The mounting plate 15 is then moved to a position between the lugs 32 and 33 and is then rotated 180. This positioning of the mounting plate 15 is shown in FIG. 2 of the drawings.
  • the bolt assembly In mounting the passage set on a door, the bolt assembly is installed first.
  • the knob 10 and escutcheon plate 13 are mounted on the mounting plate 15', which is adjusted for the thickness of the door.
  • the bolt 35 is then pressed completely in and held in such position, causing the fingers 42 to move inwardly and spread apart from each other.
  • the mounting plate 15 is moved into abutting relationship with the side of the door, with the post 19 extending through the opening 41 and the spindle 12 passing between the fingers 42 to a position wherein the arcuate section 31 of the spindle 12 is aligned with the bolt assembly.
  • the bolt 35' is then released, permitting the spring 46 to draw the fingers 42 back within the housing 38.
  • the hooks 45 are retained in such position, due to the retracting force exercised on the fingers 42 by the spring 46.
  • the other mounting plate 16 is then mounted on the opposite end of the spindle 12, with its semi-circular members 22 and 23 fitting around the outer surfaces of the projections 17 and 18 of the mounting plate 15.
  • the shorter cylindrical members 24 and 25 of the mounting plate 16 are aligned with the projections 17 and 18.
  • a pair of short holding screws 70 are then inserted from the outside of the mounting plate 16.
  • the screws 70 extend through the cylindrical members 24 and 25 and are threaded into the projections 17 and 18 to hold the mounting plate 16 against the other side of the door.
  • the second escutcheon plate 14 and knob 11 are then mounted on the end of the spindle 12 concealing the screws 70.
  • the spindle 12 is rotated. This causes the arcuate portion 3 1 to be rotated. As the arcuate portion 31 rotates, it carries one or the other of the hooks 45 with it, causing the fingers 42 to be withdrawn from the housing 38 and the bolt 35 retracted against the urging of the spring 46. Stop means for limiting the rotation of the spindle 12 and preventing damage to the operating mechanism is provided by engagement between the stop tab 34 and the stop members 27 and 28.
  • the spring 46 retracts the fingers 42 into the housing 38, causing the bolt 35 and spindle 12 to return to their normal positions.
  • a mounting member having a central opening which fits around said spindle, said mounting member being movable longitudinally along said spindle between two predetermined positions to adjust said lock set for doors of two difierent thicknesses, said spindle having adjacent one end thereof a pair of shoulders projecting outwardly from the outer surface of said spindle, each of said shoulders having a substantially radially directed outer side edge extending along the side of said shoulder which is disposed toward the adjacent end of said spindle, said outer side edges of said shoulders being spaced longitudinally apart from each other along said spindle by a distance substantially equal to the difference in the different thicknesses of doors on which said lock set is adapted to be mounted, said mounting member having a notch disposed adjacent to and connecting with said central opening, said notch being adapted to fit over the outermost of said shoulders, said mounting member being movable over said outermost shoulder only when said notch is aligned with said outermost shoulder, said mounting member being rotatable

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Lock And Its Accessories (AREA)

Description

July 3, 1962 w. J. DUVALL 3,042,437
PASSAGE SET Filgd May 9, 1960 k. 2 Sheets-Sheet 1 INVENTOR. "44475? J. DUI/ALL July 3, 1962 w. J. DUVALL 3,042,437 3 PASSAGE SET Filed May 9, 1960 2 Sheets-Sheet '2 mmvron MATE/2 J. DUI/ALL YG KMQQ Arrozx/e United States Patent 3,842,437 PASSAGE SET Walter J. Duvall, P.O. Box 866, Chula Vista, Calif. Filed May 9, 1968, Ser. No. 27,625 1 Claim. (Cl. 292-358) This invention relates to a new and improved passage set of the cylindrical type which is particularly adapted for residential use.
It is an object of my invention to provide a passage set having a small number of parts, so that it is capable of simple and economical manufacture and assembly.
A further object of my invention is to provide for simple and rapid adjustment of the passage set to any thickness of door without the use of screw threading.
My invention also comprises such other objects, advantages and capabilities as will later more fully appear and which are inherently possessed by my invention.
While I have shown in the accompanying drawings a preferred embodiment of my invention, it should be understood that the same is susceptible of modification and change without departing from the spirit of my invention.
Referring to the drawings, FIG. 1 is an isometric view of my passage set assembled;
FIG. 2 is a sectional view of the same taken on line 22 of FIG. 1;
FIG. 3 is a sectional view of the same taken on line 3--3 of FIG. 1;
FIG. 4 is a sectional view of the same taken on line 4--4 of FIG. 1;
FIG. 5 is a sectional view of the same taken on line 55 of FIG. 2;
FIG. 6 is an isometric view of the spindle, showing the mounting spring for the removable knob at one end and a stationary knob at the other end;
FIG. 7 is a side elevational view, partly in section, of the attached mounting plates and mounting screws;
FIG. 8 is a sectional view taken on line 8-8 of FIG. 1;
FIG. 9 is an isometric view of the removable knob.
A preferred embodiment which has been selected to illustrate my invention comprises a pair of manually rotatable knobs 1t) and 11, which are mounted on the opposite ends of an elongated hollow cylindrical spindle 12. The knob 10 is permanently mounted on one end of the spindle 12, while the other knob 11 is removably mounted on the opposite end of the spindle 12. The end of the spindle 12 which carries the removable knob 11 is provided on its upper end with a pair of substantially rectangular openings 68 and on its lower end with a slot 61. A circular leaf spring 62 is mounted concentrically within the end of the spindle 12 with its opposite ends disposed adjacent the openings 68. The leaf spring 62 carries at its midportion a tab 63 which extends through the slot 61 in the spindle 12.
The leaf spring 62 is installed in the end of the spindle 12 by passing it through both of the openings 68 and then pinching its ends to snap the spring 62 into place. The shank of the knob 11 is provided with a slot 64 which is adapted to receive the tab 63 of the spring 62. In order for the shank of the knob 11 to pass over the end of the spindle 12, the tab 63 must be depressed to a position wherein it no longer protrudes beyond the surface of the spindle 12. When this is done, the ends of the leaf spring 62 engage the upper sides of the open ings 60 in order to limit the inward movement of the tab 63 and to prevent the spring 62 from being displaced. When the slot 64 in the shank of the knob 11 is aligned with the tab 63, the resilience of the spring 62 moves the tab 63 out through the slot 64 to hold the knob 11 in place on the end of the spindle 12. The tab 63 is again 3,042,437 Patented July 3, 1962 depressed whenever the knob 11 is to be removed from the spindle.
The ends of the leaf spring 62 are bent outwardly so that they extend into the openings 60 and are aligned with the opposite longitudinally extending sides of the openings 60. r
A pair of escutcheon plates 13 and 14 are disposed in wardly from the knobs 10 and 11. The escutcheon plates 13 and 14 fit over a pair of mounting plates 15 and 16.
The first mounting plate 15 is provided with a pair of elongated cylindrical projections 17 and 18 which extend inwardly at a right angle from the surface of the mounting plate 15. These projections 17 and 18 are hollow and are internally screw threaded. The projections 17 and 18 are spaced 180 apart from each other.
Spaced from each of the projections 17 and 18 is a post 19, which has an oblong rectangular cross section and which is substantially longer than the projections 17 and 18. The center of the mounting plate 15 is pro vided with a circular opening 20. The side of the opening 28 Opposite from the post 19 is provided with a notch 21. The projections 17 and 18 and the post 19 are all preferably formed as integral parts of the mounting plate 15.
The second mounting plate 16 is provided with a pair of elongated semi-circular members 22 and 23, which extend inwardly at a right angle from the surface of the mounting plate 16. Disposed within the lower portions of the semi-circular members 22 and 23 are a pair of shorter hollow cylindrical members 24 and 25. The center of the mounting plate 16 is provided with a central opening 26. The opposite sides of the opening 26 are provided with a pair of notches to permit the mounting plate 16 to pass over the tab 63 which is used to hold the knob on the spindle.
A pair of stop members 27 and 28 are disposed adjacent the cylindrical members 24 and 25 on opposite sides of the opening 26. The stop members 27 and 28, cylin drical members 24 and 25 and semi-circular members 22 and 23 are all connected together and are preferably formed as integral parts of the mounting plate 16.
The midportion of the spindle 12 is cut away to leave an arcuate portion 31 of less than The portion of the spindle 12 adjacent the arcuate portion 31 is provided toward one end of the spindle 12 with a pair of outwardly projecting lugs 32 and 33 and toward its. opposite end with a single outwardly pressed stoptab 34.
The bolt assembly comprises a bolt 35, a face plate 36, a back-up plate 37 and a cylindrical housing 38, which extends inwardly from the back-up plate 37. The inner end of the housing 38 is closed by a circular member 39, which has an integral bifurcated portion 40 which extends inwardly from the inner end of the housing 38. An opening 41 having an oblong rectangular cross section extends transversely through the end of the bifurcated member 40. Each of a pair of identically formed elongated fingers 42 carries at its outer end a hook 45. The fingers 42 are mounted side by side with their hooks 45 facing each other. The fingers 42 extend through the bifurcated portion 40 and through openings in the circular member 39 into the housing 38.
The end of the fingers 42 which are disposed within the housing 38 are provided with substantially right angular tabs 43 which are disposed within the bolt 35, ex-
tending through a central opening 44 in the inner end of the bolt 35. A coil spring 46 is disposed within the housing 38 surrounding the fingers 42. One end of the spring 46 bears against the circular member 39 and the other end bears against the end of the bolt 35. The spring 46 acts to normally urge the bolt 35 toward an outward posi tion and to retract the fingers 42 within the housing 38.
In assembling my passage set, the first mounting plate 15 may be disposed in one of two selected positions in order to adjust the set for substantially any size of door now in use. This adjustment is accomplished by positioning the mounting plate 15 in one position wherein it abuts against the outermost lug 32 on the spindle 12 for doors of thicknesses from 1 /2" to 1 /8", including the popular 1%" thickness. For doors of 1%" to 1 /2 thickness, including the popular 1% thickness, the mounting plate 15 is rotated until its notch 21 is aligned with the lugs 32 and 33. The mounting plate 15 is then moved to a position between the lugs 32 and 33 and is then rotated 180. This positioning of the mounting plate 15 is shown in FIG. 2 of the drawings.
In mounting the passage set on a door, the bolt assembly is installed first. The knob 10 and escutcheon plate 13 are mounted on the mounting plate 15', which is adjusted for the thickness of the door. The bolt 35 is then pressed completely in and held in such position, causing the fingers 42 to move inwardly and spread apart from each other. The mounting plate 15 is moved into abutting relationship with the side of the door, with the post 19 extending through the opening 41 and the spindle 12 passing between the fingers 42 to a position wherein the arcuate section 31 of the spindle 12 is aligned with the bolt assembly.
The bolt 35' is then released, permitting the spring 46 to draw the fingers 42 back within the housing 38. This brings the hooks 45 into engagement with the edges of the 'arcuate portion 31 of the spindle 12. The hooks 45 are retained in such position, due to the retracting force exercised on the fingers 42 by the spring 46.
The other mounting plate 16 is then mounted on the opposite end of the spindle 12, with its semi-circular members 22 and 23 fitting around the outer surfaces of the projections 17 and 18 of the mounting plate 15. The shorter cylindrical members 24 and 25 of the mounting plate 16 are aligned with the projections 17 and 18. A pair of short holding screws 70 are then inserted from the outside of the mounting plate 16. The screws 70 extend through the cylindrical members 24 and 25 and are threaded into the projections 17 and 18 to hold the mounting plate 16 against the other side of the door. The second escutcheon plate 14 and knob 11 are then mounted on the end of the spindle 12 concealing the screws 70.
'In use, as either of the knobs 10 or 11 is rotated, the spindle 12 is rotated. This causes the arcuate portion 3 1 to be rotated. As the arcuate portion 31 rotates, it carries one or the other of the hooks 45 with it, causing the fingers 42 to be withdrawn from the housing 38 and the bolt 35 retracted against the urging of the spring 46. Stop means for limiting the rotation of the spindle 12 and preventing damage to the operating mechanism is provided by engagement between the stop tab 34 and the stop members 27 and 28.
As soon as the knob is released, the spring 46 retracts the fingers 42 into the housing 38, causing the bolt 35 and spindle 12 to return to their normal positions.
I claim:
In a lock set having an elongated cylindrical spindle, a mounting member having a central opening which fits around said spindle, said mounting member being movable longitudinally along said spindle between two predetermined positions to adjust said lock set for doors of two difierent thicknesses, said spindle having adjacent one end thereof a pair of shoulders projecting outwardly from the outer surface of said spindle, each of said shoulders having a substantially radially directed outer side edge extending along the side of said shoulder which is disposed toward the adjacent end of said spindle, said outer side edges of said shoulders being spaced longitudinally apart from each other along said spindle by a distance substantially equal to the difference in the different thicknesses of doors on which said lock set is adapted to be mounted, said mounting member having a notch disposed adjacent to and connecting with said central opening, said notch being adapted to fit over the outermost of said shoulders, said mounting member being movable over said outermost shoulder only when said notch is aligned with said outermost shoulder, said mounting member being rotatable with respect to said spindle to move said notch selectively into or out of alignment with said outermost shoulder to selectively permit or prevent the movement of said mounting member along said spindle, said mounting member being movable between two pro-determined positions, in one of which said notch is out of alignment with said outermost shoulder and said mounting member abuts against the radially directed outer side edge of said outermost shoulder to adjust said lock set for doors of greater thicknesses, and in the other of which said mounting member is moved past said outermost shoulder and abuts against the radially directed outer side edge of the innermost of said shoulders to adjust said lock set for doors of lesser thicknesses.
References Cited in the file of this patent UNITED STATES PATENTS 1,876,079 Schlage Sept. 6, 1932 2,719,424 Rayburn Oct. 4, 1955 2,795,948 Rayburn June 18, 1957 2,803,957 George Aug. 27, 1957 2,846,255 Wardwell Aug. 5, 1958 FOREIGN PATENTS 804,227 Great Britain Nov. 12, 1958
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Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3126217A (en) * 1964-03-24 Low-friction frame for locking devices
US3220231A (en) * 1962-12-05 1965-11-30 Nat Lock Co Door lock mechanism
US3228218A (en) * 1963-06-07 1966-01-11 Nat Lock Co Lock set assembly
US3240040A (en) * 1964-01-13 1966-03-15 Nat Lock Co Door lock construction
US3253848A (en) * 1962-08-10 1966-05-31 Nat Lock Co Latch bolt assembly with collapsible retractor
US3792886A (en) * 1972-06-02 1974-02-19 Acme General Corp Two way door latch
AU605638B2 (en) * 1985-12-18 1991-01-17 Assa Abloy Australia Pty Limited Improved lock bolt mechanism
US5113675A (en) * 1991-01-07 1992-05-19 Uyeda Alan K Intermediate door locking mechanism
US5165739A (en) * 1991-12-10 1992-11-24 Liu Tai Ping Door latch
US6131970A (en) * 1997-09-25 2000-10-17 Yale Security Inc. Latch assembly with keyed rose plate for adjustment to doors of differing thickness
US20110203326A1 (en) * 2010-02-23 2011-08-25 Thase Enterprise Co., Ltd. Lock device

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1876079A (en) * 1927-12-12 1932-09-06 Schlage Lock Co Door latch
US2719424A (en) * 1952-05-24 1955-10-04 Victor M Carter Pin tumbler lock and knob assembly
US2795948A (en) * 1952-03-15 1957-06-18 Victor M Carter Standard chassis lock hardware for passage set and privacy lock
US2803957A (en) * 1956-04-09 1957-08-27 Harry F George Latching mechanism
US2846255A (en) * 1954-06-28 1958-08-05 Sargent & Co Door locks
GB804227A (en) * 1955-02-11 1958-11-12 Lockwood Hardware Mfg Co Improvements in or relating to latching mechanism

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1876079A (en) * 1927-12-12 1932-09-06 Schlage Lock Co Door latch
US2795948A (en) * 1952-03-15 1957-06-18 Victor M Carter Standard chassis lock hardware for passage set and privacy lock
US2719424A (en) * 1952-05-24 1955-10-04 Victor M Carter Pin tumbler lock and knob assembly
US2846255A (en) * 1954-06-28 1958-08-05 Sargent & Co Door locks
GB804227A (en) * 1955-02-11 1958-11-12 Lockwood Hardware Mfg Co Improvements in or relating to latching mechanism
US2803957A (en) * 1956-04-09 1957-08-27 Harry F George Latching mechanism

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3126217A (en) * 1964-03-24 Low-friction frame for locking devices
US3253848A (en) * 1962-08-10 1966-05-31 Nat Lock Co Latch bolt assembly with collapsible retractor
US3220231A (en) * 1962-12-05 1965-11-30 Nat Lock Co Door lock mechanism
US3228218A (en) * 1963-06-07 1966-01-11 Nat Lock Co Lock set assembly
US3240040A (en) * 1964-01-13 1966-03-15 Nat Lock Co Door lock construction
US3792886A (en) * 1972-06-02 1974-02-19 Acme General Corp Two way door latch
AU605638B2 (en) * 1985-12-18 1991-01-17 Assa Abloy Australia Pty Limited Improved lock bolt mechanism
US5113675A (en) * 1991-01-07 1992-05-19 Uyeda Alan K Intermediate door locking mechanism
US5165739A (en) * 1991-12-10 1992-11-24 Liu Tai Ping Door latch
US6131970A (en) * 1997-09-25 2000-10-17 Yale Security Inc. Latch assembly with keyed rose plate for adjustment to doors of differing thickness
US20110203326A1 (en) * 2010-02-23 2011-08-25 Thase Enterprise Co., Ltd. Lock device
US8079238B2 (en) 2010-02-23 2011-12-20 Thase Enterprise Co., Ltd. Lock device

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