US138680A - Improvement in mortise door-latches - Google Patents
Improvement in mortise door-latches Download PDFInfo
- Publication number
- US138680A US138680A US138680DA US138680A US 138680 A US138680 A US 138680A US 138680D A US138680D A US 138680DA US 138680 A US138680 A US 138680A
- Authority
- US
- United States
- Prior art keywords
- latches
- improvement
- latch
- bent lever
- mortise
- 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
- 210000001699 lower leg Anatomy 0.000 description 2
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B85/00—Details of vehicle locks not provided for in groups E05B77/00 - E05B83/00
- E05B85/20—Bolts or detents
- E05B85/22—Rectilinearly moving bolts
-
- 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
- Y10T292/0994—Lever
Definitions
- Mortise-latches have heretofore been constructed with a bent lever to operate the sprin g: latch; and in the bottom of the case is an opening, in which the thumb-piece leversop- ,erate upon one arm of the aforesaid bent lever.
- My present invention is made to obviate this difficulty; and consists in combining with said bent lever a slide-block, pivoted to the end of the bent lever, and moving in a recess provided for it in the lock-case.
- the thumbpiece levers act upon this block, and the leverage being equal, the latch is withdrawn with equal facility by pressure upon either thumb-piece.
- Figure 1 is an elevation of the latch, a portion of the case being broken open to show the parts; and Fig. 2 is a crosssection, showing the slide-block, bent lever, and actuating thumb-levers.
- the latch a slides through the front plate 0, as usual, and within the case is the shank d of the latch sliding between the lugs e e and terminating as a button, f, against which the arm 9 of the bent lever acts.
- 70 is the spring of the latch.
- the other arm h of this bent lever is nearly horizontal, and has a stud-pivot, 0, at its end for the block lthat slides in guides i i in the loclrcase.
- the bottom of the lockcase is recessed so as to allow the latch thumblevers m m to act upon the slide-block, and, as the power upon the thumb-levers an is transferred by the block I to the stud-pivot 0 of the W. T. MUNGER.
Landscapes
- Adornments (AREA)
Description
W. T. MUNGER.
Mortise Door-Latches.
Patented May 6,1873.
I w////// ii 7% r H x 1 DJ IAILI m AM PHOTO-LITHOGIFAPHIC 00. My (OSBORNEIS Fnocsss) l UNITED STATES PATENT CFFICE.
WALLACE T. MUNGER, OF NEW BRITAIN, CONNECTICUT, ASSIGNOR TO P. COBBIN AND F. CORBIN, OF SAME PLACE.
IMPROVEMENT m MORTISE lDOOR-LATCHES.
Specification forming part of Letters Patent No. 138,680, dated May 6, 1873; application filed April 12, 1873.
To all whom it may concern Be it known that I, WALLACE T. MUNGER, of New Britain, in the county of Hartford and State of Connecticut, have invented Improvement in Mortise-Latches for Store-Doors, of which the following is a specification:
Mortise-latches have heretofore been constructed with a bent lever to operate the sprin g: latch; and in the bottom of the case is an opening, in which the thumb-piece leversop- ,erate upon one arm of the aforesaid bent lever.
In consequence of the thumb-piece levers from the handles'at the opposite sides of the door being side by side, one of them is nearer to the fulcrum of the bent lever than the other, and hence it requires more force to operate the thumb-piece at one side of the door than at the other.
My present invention is made to obviate this difficulty; and consists in combining with said bent lever a slide-block, pivoted to the end of the bent lever, and moving in a recess provided for it in the lock-case. The thumbpiece levers act upon this block, and the leverage being equal, the latch is withdrawn with equal facility by pressure upon either thumb-piece.
In the drawing, Figure 1 is an elevation of the latch, a portion of the case being broken open to show the parts; and Fig. 2 is a crosssection, showing the slide-block, bent lever, and actuating thumb-levers.
- The latch a slides through the front plate 0, as usual, and within the case is the shank d of the latch sliding between the lugs e e and terminating as a button, f, against which the arm 9 of the bent lever acts. 70 is the spring of the latch. The other arm h of this bent lever is nearly horizontal, and has a stud-pivot, 0, at its end for the block lthat slides in guides i i in the loclrcase. The bottom of the lockcase is recessed so as to allow the latch thumblevers m m to act upon the slide-block, and, as the power upon the thumb-levers an is transferred by the block I to the stud-pivot 0 of the W. T. MUNGER.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US138680A true US138680A (en) | 1873-05-06 |
Family
ID=2208094
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US138680D Expired - Lifetime US138680A (en) | Improvement in mortise door-latches |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US138680A (en) |
-
0
- US US138680D patent/US138680A/en not_active Expired - Lifetime
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