US 843200 A
Description (OCR text may contain errors)
W. W. FESSLER.
APPLICATION FILED MAB. 2B, 1906.
PATENTED FEB. 5, 1907.
7? W/TN SSES INI/EN TOI? A rra/vers WALTER W. FESSLER, OF NEW YORK, N. Y.
Specification of Letters Patent.
Patented Feb. 5, 1907.
Application filed March 28,1906. Serial No. 308,405.
To all whom it may concern:
Beit known that I, WALTER W. FEssLER,
. a citizen of the United States, and residing at New York, in the county of New York and State of New York, have invented certain new and useful Improvements in Door- Locks, of which the following is a specification, such as will enable those skilled in the art to which' it appertains to make and use the same.
This invention relates to door-locks; and the object thereof is to provide animproved device of this class which is simple in construction and operation and composed of but few parts and which when in operation cannot be picked or forced by tlie insertion of a tool or instrument between the door and door-frame or by cutting away a part of the door-frame in order to insert a tool or instrument for the purpose of operating the lock so as to open the door.
This invention is an improvement on that described and claimed in United States Letters Patent granted to me March 13, 1906, No. 815,009, and is fully disclosed in the following specification, of which the accompanying` drawin s form a part, in which tle separate parts o my improvement are designated by suitable reference characters in each of the views, and in which- Figure 1 is afront view of my improved lock and showing the front plate of the separate parts thereof removed and also showing the parts of lock in inoperative position; Fig. 1
2, a similar view showing the parts of tlc lock in operative position; Fig. 3, a transverse section on the line 3 3 lof Fiv. 1 and showing the lock secured to a doorfFig. 4, a view similar to Fig. 3, but showing a modification; and Fig. 5, an inside view of one of tle lock-operating devices which is secured to the inner side of the lock or to the inner side of the door.
In the practice of my invention I provide a casing a, adapted to be secured in or to a door 1n the usual manner, and a keeper b, adapted to be secured in or to a door-frame in the usual manner. The keeper b is provided with a curved or arc-shaped passage c, which opens through the face of said keeper at or near the top and bottom thereof, as shown at c2 and c3, and said keeper in practice is preferably cast in the desired form from any suitable metal, and the face thereof is provided with a central portion c, which separates the openings c2 and c3 of the curved or arc-shaped passage c. In Figs. 1 and 2 of the drawings the face-plate of the keeper b is removed; but it will be understood that the said keeper in practice is provided with a face-plate, especially when the lock or the parts thereof are secured to the inner side of the door and door-frame, as shown in Figs. 3 and 4; but when the parts of the lock are secured in the door and in the frame the faceplate of the keeper need not necessarily be employed.
Pivoted in the inner end of the casing a is a plate d, which is preferably segmental in l form and provided with a curved arm d2, the
outer edge of the plate d and arm d2 in the form of construction shown being formedon the arc of a circle the center of which is the pivotal point of the plate d. rPhe pivot of the plate d consists of a pin or similar device d3, with which is connected a pinion d4, and.
in practice the pin d3 may be stationary, and the plate d and pinion d4 may be secured togetl. er, so as to turn on said pin, or said plate and pinion may be secured to said pin and said pin may be rotatably mounted. y
Mounted centrally and longitudinally of the casing a is a lock-bolt e, the front end of which is narrower than the rear end portion thereof and provided in the bottom side thereof with teeth e2, which mesh `with the teeth on the pinion d4, and formed in the bottom of the rear end portion of the bolt e is a recess f, the bottom side walls of which are cut away to form beveled shoulders f 2, and the rear end portion of the bolt e is provided'with a longitudinal recess c3, in the rear end portion of which is pivoted a forwardly-directed and vertically-movable dog g, provided at its front end with a transverse head g2, the ends of which extend transversely through the bolt ein the recess f.
The (pivotal point of the dog gis at g3, and pivote over the rear end portion of the bolt e is an arm h, which extends forwardly and normally rests on the bolt e and the front end of which is provided with an upwardly and forwardly curved finger h2, having a hook member h, adapted to enter recesses di andV d in the arm d2, and placed in the casin a over the arm h is a sprin t, which normaly bears on said arm and forces it outwardly onto the bolt e.
In the form of construction shown in Figs. 1 to 5, inclusive, a drum j is passed throu h the door 7c and screwed into the back of te casing a, and in this drum is a rotatable .cyl-v IOO IIC
of the key i3 the bit 1'4 may be made to operate the bolt e or project said bolt, as shown in Fig. 2, or withdraw said bolt, as shown in Vhen the bolt eis projected, as shown in Fig. 2, the plate d is turned and the'arm d2 is forced through the keeper b, as clearly shown in Fig. 2, and when said bolt is withdrawn this operation is reversed, thc plate d is returned to the position shown in Fig. 1, and the arm d2 is also withdrawn into the casing a.
In the operation of the cylinder j2 and the bit j* thereof, supposing the parts to be in the position shown in Fig. 1, the said cylinder is turned to the left. the bit 7'4 strikes the head g2 of the dog g and raises said dog, and this operation raises the arm h and throws the finger h2 out of engagev ment with the arm d2. As the cylinder jz is turned farther to the left the bit 7'4 strikes the forward beveled shoulder]r2 of the bolt e and moves said bolt forwardly, and this operation projects said bolt and turns theplate d and the arm d2 into the position shown in Fig. 2. In this position of the parts the finger h2 of the arm h or the hook or nose h3 of said finger gages the recess d in the plate d, and the door 1s securely locked. f
In unlocking the door the key ja is inserted and the cylinder 7'2 turned to the right, and in this operation the bit 7'4 raises the dog g, which latter raises the arm h, and the finger h2 of said arm is disengaged from the recess d, and as the cylinder i2 is turned farther to the right the bit j* strikes the rear beveled shoulder f2 and forces said bolt backwardly, as shown in full lines in Fig. 1-, and the door is unlocked.
The drum y' is held against rotation by a screw js, passed through a stud or bearing j", and that part of the lock comprising the drum y', cylinder jz, and key jf is of the ordinary Yale type; but these parts may be constructed in any desired manner, and in Fig. 4 I have shown a modification in which the drum j .is omitted and an ordinary keym is passed through a keyhole m2, formed in the door, and the key m is provided with a bit m3, which takes the place of the bit j, and in this way the dog g and bolt e may be operated by an ordinary key passed through the door.
The inner side of the casing a is provided with an ordinary knob fn, having a shank n, which is passed through the face-plate of said casing and the inner end of which is provided with a plate n3, having bits lz/1, which extend in opposite directions, normally Yforwardly and backwardly,l and which are held in their normal position by a spring '12.5, and
In this operation by means of knob n the parts of dthe lockmay be operated from the inner side of the door exactly the same asl from the outer side thereof by means of the cylinder j2 or the key m, the bits n4 serving when the knob n is turned in one direction to project thev bolt e and in the other direction to withdraw said bolt, said bits operating in connection vwith the dog g or the head g2 thereof.
When the parts of the lock are in their o erative position, the arm d2 extends entire y through the keeper b, the end thereof extending back into the casing a, and with this con-- .keeper b and forms a supplemental locke-bolt,
the arm d2 and the forward end of the holt e both serving as lock purposes, and in. this way the lock is made much stronger and more effective.
My invention is not limited to any particu lar form of key device for operating the do g',
the arm h, and the bolt e, and any suita ler device or devices may be employed for this purpose, and various changes in and modications of the construction described may be made without departing from the spirit .of
my invention orsacrificing its advantages.
Having fully described my invention, what I claim as new, and desire to Secure by Letters Patent, is
I. A lock comprising a lock-casing adapted to be secured to or in a door, and a keeper adapted to be Secured to or in a door-frame, the keeper being provided with a curved pas sage which opens through the face thereof at two diderent points and the lock-easing heing provided with a pivoted plate having 8, curved arm adapted to be projected through said keeper and back into said casing, a pin-l ion connected with said plate, a bolt mc'ivunt-s ed longitudinally in the lock-casing and provided with teeth operatin with said pinion and adapte to be projected into said eeper, a pivoted springe ressed arm resting on said bolt and' adaptl to eilgage said curved arm at two different points,
and a dog pivoted in said bolt and ada ted to raise the spring-depressed arm, said og and said bolt being both adapted to' be operated by a key.
2. A lock comprising a casing adapted to be secured to orin a door, and a keeperadapted to be secured to orin a door-frame, a mein ber pivoted in said casing and provided with a` curved arm adapted to be projected tlnough said keeper and back into is entirely.v
in connection l IOO said member, a olt mounted longitudinally in a pinion connected with said member, a I in the casing and provided with teeth operatbo t mounted longitudinally in the casing l ing in connection with said pinion and also and provided with teeth operating in connecl adapted to be projected into said keeper, a tion`With said pinion and also adapted to be spring-depressed device resting on said bolt projected into said keeper, a s ring-depressed and adapted to engage said arm at tWo diiierevice resting on said bolt an adapted to enent points, and a dog 'pivoted in said bolt and 0'age said arm at tWo diierent points, and a adapted to raise the spring-depressed device, dog pivoted in said bolt and adapted to raise l said dog and said bolt being both adapted to the sprin -depressed device, said dog and i be operated by a key. said bolt eing both adapted to be operated In testimony that I claim the foregoing as by a key. my invention I have signed my name, in
3. A lock comprising a casing adapted to i presence of the subscribing Witnesses, this 3o be secured to orin a door, and a keeper adapt 27 th day of March, 1906. ed to be secured to or in a door-frame, a memi WALTER W FESSLER ber pivoted in said casin and rovided with a curved arm adapte to e projected Witnesses: through said kee er, a pinion connected with C. J. KLEIN,
F. A. STEWART.