US481557A - Cyrille gagnon and louis lefebvre - Google Patents
Cyrille gagnon and louis lefebvre Download PDFInfo
- Publication number
- US481557A US481557A US481557DA US481557A US 481557 A US481557 A US 481557A US 481557D A US481557D A US 481557DA US 481557 A US481557 A US 481557A
- Authority
- US
- United States
- Prior art keywords
- latch
- door
- lefebvre
- louis
- cam
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000002184 metal Substances 0.000 description 4
- 230000000630 rising Effects 0.000 description 2
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B17/00—Accessories in connection with locks
- E05B17/0025—Devices for forcing the wing firmly against its seat or to initiate the opening of the wing
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
- E05F11/00—Man-operated mechanisms for operating wings, including those which also operate the fastening
-
- 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
- Y10T292/1043—Swinging
- Y10T292/1075—Operating means
- Y10T292/1077—Cam
-
- 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
- Y10T292/1043—Swinging
- Y10T292/1075—Operating means
- Y10T292/1083—Rigid
- Y10T292/1092—Swinging catch
Definitions
- Our invention consists in a latch operated by door-knobs, the saine as door-locks.
- Figure l is a front view of the latch as it appears when fixed on a door opening to thev right, the knob and cover-plate being omitted.
- Fig. 2 is a section of the same through the door-knob.
- A is the latch proper or lever having at its inner end a rectangular opening, in which a cam operates to raise it out of its catch in order to open the door.
- E is a double cam fixed on the cylinder K, with a square opening for the spindle K', Fig. 2, of the doorknob which in turning either way will carry around the cam and raise the lever out of the catch J, thus relieving the door, which can then be opened.
- G is the usual guide of thumb-latches bearing a notch I, so made as to prevent the Inotion of the latch or lever when the catch H is turned into it. 'lhisis to preventthe opening of the door from the outside.
- H is the locking-catch.
- J is the usual catch used in thumb-latches.
- L is a cover plate or iiange of metal adjusted over the inner end of the latch and tilling the space around it to hide from view the working part of the invention.
- M M are door-knobs adjusted in the usual Way.
- the cam H is first turned up out of the notch I, then turning round the knobs M M either to the right or left from the inside or the outside the cam E will act on the upper side of the rectangular opening D and raise the lever out of the catch J, thus allowing the operator to open the door.
- the same latch may be used simply by inverting the cam E and the guide G.
- the parts can be easily covered and a neat arrangement secured, the flange or plate L, before mentioned, serving this purpose and extending over the latch, its opening, and the cam therein.
- Wie do not claim as our invention the latch proper, nor the guide, nor the catch, nor the cam, for we know that these have been in use for a long period; but
- the plate B the latch having an opening therein, the cam arranged entirely within the said opening and in the same plane with the latch, the cover-plate eX- tending over the latch at its opening to cover the same and the cam, the said latch projecting at one side of the cover-plate to engage With the keeper and projecting on the other side of said plate, the latter projecting end being pivoted to the plate B, substantially as described.
Landscapes
- Securing Of Glass Panes Or The Like (AREA)
- Lock And Its Accessories (AREA)
Description
(No Model.)
C. GAGNON 8v L. LEFEBVRE. LATCH No. 481,557. Patented Aug. 30, 1892.
UNITED STATES PATENT OFFICE.
CYRILLE GAGN ON AND LOUIS LEFEBVRE, OF MONTREAL, CANADA.
LATCH.
SPECIFICATION forming part of Letters Patent No. 481,557, dated .August 30, 1892.
Application filed March 15, 1892.
To @ZZ whom it may concern.-
Be it known that we, CYRILLE GAGNON, joiner, and LOUIS LEFEBVRE, scale-manufacturer, of the city of Montreal, in the Province of Quebec, Canada, have jointly invented new and useful Improvements in Door-Latches; and We do hereby declare that the following is a full, clear, and exact description of the saine.
Our invention consists in a latch operated by door-knobs, the saine as door-locks.
Figure l is a front view of the latch as it appears when fixed on a door opening to thev right, the knob and cover-plate being omitted. Fig. 2 is a section of the same through the door-knob.
A is the latch proper or lever having at its inner end a rectangular opening, in which a cam operates to raise it out of its catch in order to open the door.
B is a disk of metal fastened to the door, on which the latch or lever is held by means of the rivet C. This disk has in its centera circular opening to receive the cylinder K of the cam E.
D is the rectangular opening in the latch A.
E is a double cam fixed on the cylinder K, with a square opening for the spindle K', Fig. 2, of the doorknob which in turning either way will carry around the cam and raise the lever out of the catch J, thus relieving the door, which can then be opened.
F is the square hole for the spindle through the cylinder carrying the double cam E.
G is the usual guide of thumb-latches bearing a notch I, so made as to prevent the Inotion of the latch or lever when the catch H is turned into it. 'lhisis to preventthe opening of the door from the outside.
H is the locking-catch.
J is the usual catch used in thumb-latches.
L is a cover plate or iiange of metal adjusted over the inner end of the latch and tilling the space around it to hide from view the working part of the invention.
M M are door-knobs adjusted in the usual Way.
Then the door is closed, the latch or lever Serial No. 424,991. (No model.)
A will engage the catch J, and it may be locked by turning the catch H into the notch I. The door cannot then be opened from the outside, the catch H preventing the rising of the lever A out of the catch J. To open the door, the cam H is first turned up out of the notch I, then turning round the knobs M M either to the right or left from the inside or the outside the cam E will act on the upper side of the rectangular opening D and raise the lever out of the catch J, thus allowing the operator to open the door. In case of a door opening to the left, the same latch may be used simply by inverting the cam E and the guide G.
By forming the opening in the latch close to the pivot C and arranging the double cam entirely within the opening and in the same plane with the latch the parts can be easily covered and a neat arrangement secured, the flange or plate L, before mentioned, serving this purpose and extending over the latch, its opening, and the cam therein.
Wie do not claim as our invention the latch proper, nor the guide, nor the catch, nor the cam, for we know that these have been in use for a long period; but
We claim as our invention- In combination, the plate B, the latch having an opening therein, the cam arranged entirely within the said opening and in the same plane with the latch, the cover-plate eX- tending over the latch at its opening to cover the same and the cam, the said latch projecting at one side of the cover-plate to engage With the keeper and projecting on the other side of said plate, the latter projecting end being pivoted to the plate B, substantially as described.
In witness whereof We have hereunto set our hands in presence of two witnesses.
11i cYEILLE s eAGNoN.
' mark LOUIS LEFEBVRE. Witnesses:
L. A. U. BEAUDRY, L. LE GRAND.
Publications (1)
Publication Number | Publication Date |
---|---|
US481557A true US481557A (en) | 1892-08-30 |
Family
ID=2550409
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US481557D Expired - Lifetime US481557A (en) | Cyrille gagnon and louis lefebvre |
Country Status (1)
Country | Link |
---|---|
US (1) | US481557A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3035859A (en) * | 1959-10-22 | 1962-05-22 | Westinghouse Electric Corp | Cover latching device |
-
0
- US US481557D patent/US481557A/en not_active Expired - Lifetime
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3035859A (en) * | 1959-10-22 | 1962-05-22 | Westinghouse Electric Corp | Cover latching device |
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