US1051636A - Lock. - Google Patents

Description

L. ROBERTS.

LOOK.

APPLICATION FILED SEPT. 6, 1911.

1,051,636, Patented Jan.28, 1913.

2 SHEETS-SHEET 1.

' WITNESSS 7 J5 f4 INVENTOR I L0 R Jaziv BY a o URL/M 6 (5/611? L. ROBERTS.

LOCK. APPLICATION FILED MP1. 6, 1911. 1,051,636. Patented Jan.28, 1913.

2 SHEETS-SHEET 2.

FIG. 5

WITNESSES INVENTOR L amls R 0 5612 25 fi w BY ,1

v M v ATTORNEYS UNITED STATES PATENT OFFICE.

LOUIS ROBERTS, OF BROOKVILLE, PENNSYLVANIA, ASSIGNOR OF ONE-HALF TO A. F.

BALMEB, or BROOKVILLE,

PENNSYLVANIA.

LOCK.

Specification of Letters Patent.

Patented Jan. 28, 1913.

Application filed September 6, 1911. Serial No. 647,807.

To all whom it may concern Be it known that I LOUIS Ronnnrs, a citizen of the United btates of America, residing at Brookville, in the county of Jefferson and State of Pennsylvania, have invented certain new and useful Improvements in Locks, of which the following is a specification, reference being had therein to the accompanying drawing.

This invention relates to looks, and more particularly to a key operated lock for doors.

The primary provide a lock with object of my invention is to positive and reliable means, in a manner as will be hereinafter set forth, for locking the knob actuated latch of the lock simultaneously with the bolt thereof, thereby providing a double lock or additional means in connection with the ordinary locking bolt.

Another object of this invention is to furnish the locking bolt of a lock with Sim le and effective means for locking the late of the lock, said means being actuated through the medium of an ordinary key employed for shifting the locking bolt.

A further object of this invention is to provide a lock consisting of comparatively few parts easy to assemble, and highly eflicient for the purposes for which it is intended.

Vith the above and other objects in view, the invention resides in the novel construction, combination and arrangement of parts to be hereinafter specifically described and then claimed.

Reference will now ings, wherein:-

Figure 1 is a front elevation of the lock with the face plate thereof removed, showing the latch in an unlocked position, Fig. 2 is a horizontal sectional View taken on the line IIII of Fig. 1, Fig. 3 is a similarview taken on the line TIL-III of Fig. 1, Fig. 4 is a front elevation of the lock, showing the latch thereof in a locked position, Fig. 5 is a vertical sectional view of the lock taken on the line VV of Fig. 1, Fig.

be had to the draw- 6 is an enlarged perspective view of a detached locking bolt, Fig. 7 is an enlarged perspective view of a detached latch actuating member, Fig. 8 is an enlarged perspective View of a detached latch, Fig. 9 is a side elevation of a key adapted to operate the lock, and Fig. 10 is an enlarged perspective view of a detached locking member. A look in accordance with this invention comprises a vertical guide or strick plate 1 having apertured lugs 2 and 3 and connected to the lugs 2 by pins 1 is a frame 5 provided with openings 6 to receive screws or other fastening means employed for retaining face plates 7 in engagement with the sides of the frame, thereby forming a lock casing.

Arranged in the upper end of the lock casing is a rectangular frame 8 having the inner wall 9 thereof cut away, as at 10 to provide clearance for a latch 11. The latch 11 has the inner end thereof, within the frame 8, provided with two curved arms 12 having cross heads 13 and the outer sides of these heads are slotted, as at 14: to receive guides 15,.carried by the inner sides of the frame 8. The heads 13 are adapted to be alternately engaged by the ends of a cam 16, carried by a knob sleeve 17. This sleeve has reduced ends 18 rotatably mounted in openings 19 provided therefor in the plates 7. The sleeve 17 has a rectangular bore 20 to receive a knob spindle 21.

The latch 11 has a longitudinal slot 22 and the outer end of said latch extends through an opening 23 in the plate 1 and has a head 24- to limit the movement of the latch into said opening. Extending into the slot 22 is a projection 25 of the inner wall 9 of the frame 8, said projection having an outwardly extending pin 26. The head at has an inwardly projecting pin 27 and encircling the pins 26 and 27 are the end convolutions of a coiled spring 28. The purpose of this spring is to normally maintain the latch in an extended position protrudingthrough the opening 23 of the plate 1.

Arranged in the lower part of the casing is a housing for the bit end of a key, said housing comprising a central plate 29 and ward plates 30, said ward plates having openings 31 registering with similar openings 32 provided therefor in the plates 7. The central plate 29 has stud pins 33 to receive the barrel 34 of a key 35. The barrel 34 has the end thereof provided with bits 36 and 37 adapted to enter the openings 32 and 31.

Slidably mounted upon the upper edge of the housing is a locking bolt 38 having a reduced end 39 adapted to extend through an opening 40 provided therefor in the plate 1. The locking bolt 38 has a longitudinal vertical slot 41 to receive the central plate 29, said slot being of a greater width than the central plate for a purpose that will presently appear. The outer lower edges of the locking bolt 38 are cut away to provide beveled surfaces 42 adapted to be engaged by the bit 37 of the key 35, whereby when said key is rotated within the casing, the bolt 38 can be shifted to a locked or unlocked position. The inner end of the bolt 38, at the upper edge thereof, has a guide 43 to receive a pin 44, carried by the wall of the frame 5. Secured to the inner end of the guide 43 is the lower end 45 of a latch locking member 46, said member movably engaging the lower side of the frame 8, with the forward por tion of said member extending upwardly and movably engaging the lower side of the latch 11, and lying within the path of the head 24.

Pivotally connected to the apertured lug 3 by a pin 47 are the apertured lugs 48 of a locking member 49. This member has a web 50 and said web has a vertical slot 51 providing clearance for the central plate 29, said web extending between the central plate 29 and the walls of the bolt 38. The lower edge of the web 50 is adapted to be engaged by the bit 36 of the key and said web elevated. The locking member 49 has a tooth 52 at each side of the web 50, these teeth engaging in notches 53 and 54 provided therefor in the upper edges of the walls of the locking bolt 38. The teeth 52 are normally retained in one set of notches by a flat compression spring 55 having one end thereof suitably secured, as at 56 to the inner side of the plate 1.

As shown in Fig. 1 of the drawings, the locking bolt 38 is in an unlocked position, but the latch 11 can be freely moved by rotating the knob spindle 21 in one direction or the other. When the spindle is turned to the right or to the left, one of the ends of the cam 16 will engage one of the heads 13 and move the latch to a retracted position, thereby allowing the door to be opened. Immediately upon the knob spindle 21 being released, the latch 11 is restored to its normal position through the medium of the conipression spring 28 which was placed under tension when the latch 11 was moved to a retracted position. This movement of the latch 11 is independent of the latch locking member. WVhen it is desired to lock the door, the key 35 can be inserted in the look from either side of the door, the barrel of the key fitting over one of the pins 33 and abutting against the central plate 29. When the key is rotated to the left, the bit 37 rides between the ward plate 30 and the plate 7 into engagement with one of the beveled surfaces 42 of the locking bolt 38 and said bolt can be shifted to a locked position, whereby the reduced end 39 thereof will protrude from the opening 40 of the plate into a keeper plate (not shown) carried by the frame of the door. Simultaneously with the movement of the bit 37 into the cut away portion of the bolt 38, is the movement of the bit 36 between the central plate 29 and the wall of the locking bolt 38. The bit 36 is of a greater length than the bit 37, and said bit engages the lower edge of the web 50 of the locking member, raising said member and moving the teeth 52 out of engagement with the notches 53. When the locking bolt 38 is shifted, the latch locking member 46 connected to the guide 43 is moved, whereby the upper end of the latch locking member will engage behind the head 24 of the latch 11 and lock said latch. Therefore the knob spindle 21 cannot be moved to retract the latch 11. When the locking bolt 38 is shifted to a locked position, the teeth 52 of the locking member 49 engage in the set of notches 53 and lock the bolt 38 in a locked position until the web 50 of the locking member is again elevated by a rotation of the key 35 to the right.

It is thought that the operation and utility of the lock will be apparent without further description, and while in the drawing there is illustrated a preferred embodiment of the invention, it is to be understood that the structural elements thereof are susceptible to such variations and modifications as fall within the scope of the appended claim.

What I claim is In a lock of the class described, a locking bolt comprising a pair of spaced plates united at their forward ends and having a reduced keeper engaging portion at said forward end portion, said bolt being open at its rear end and having an apertured guide on its upper edge at said rear end, a casing containing said bolt and having an opening where through said reduced portion passes, a pin carried by the casing and extending into the guide, pairs of oppositely disposed spaced notches on the upper edges of said plates, each of said plates being provided said plates and adapted to be raised by the adjacent its rear end with an exteriorly diskey prior to movement of the bolt. 10 posed notch adapted to receive the ward of In testimony whereof I afiix my signature a key and extending from the bottom edge in the presence of two witnesses.

5 upward, a pawl mounted in said casing and LOUIS ROBERTS.

having an end adapted for engagement with Witnesses: one or the other of said pairs of notches, NOAH WEBSTER, and a tongue on said pawl fitting between H. E. MCGAVEY.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G.

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