US1942087A

US1942087A - Steel doorlock

Info

Publication number: US1942087A
Application number: US664966A
Authority: US
Inventors: Cooper Samuel
Original assignee: Individual
Current assignee: Individual
Priority date: 1933-04-07
Filing date: 1933-04-07
Publication date: 1934-01-02
Anticipated expiration: 1951-01-02

Description

Jan. 2, 1934. 5 COOPER 1,942,087

STEEL DOORLOCK Filed April 1933 43 Sheets-Sheet l Invemor ,Smue/ 00 0911 Q By flltomey Jan. 2, OPER STEEL DOORLOCK Filed April 7, 1953 3 Sheets-Sheet 2 -2 .63 lnuer llor Jan. 2, 1934.

s. COOPER 1,942,087

STEEL DOORLOCK Filed April 7, 1933 3 Sheets-Sheet 5 fame; a

fl Home y Inventor F X Patented Jan. 2, 1934 UNITED STATES ATENT 4 Claims.

This invention relates to a door lock, the general object of the invention being to so form the parts of the lock that they can be formed of steel and also to provide a lock bolt formed of a plurality of sections, each having notches therein, some of which are adapted to receive the wards of a key and others of which are adapted to receive a part of a member, rocked by the key, said part of the member holding the bolt in projected or retracted position.

This invention also consists in certain other features of construction and in the combination and arrangement of the several parts, to be hereinafter fully described, illustrated in the accompanying drawings and specifically pointed out in the appended claims.

In describing the invention in detail, reference will be had to the accompanying drawings wherein like characters denote like or corresponding parts throughout the several views, and in which:

Figure l is a view looking into the lock casing, with the cover removed and with parts in section, said figure showing the bolts in projected position.

Figure 2 is a similar view, but showing the lock bolt in retracted position.

Figure 3 is a similar view but showing the parts engaged by a key and with the parts about to be moved to retracted position.

Figure 4 is a section on line 4-4 of Figure 3.

Figure 5 is a view of the carriage.

Figure 6 is a view of the latch bolt.

Figure '7 is a view of the night latch for holding the latch bolt in projected position.

Figure 8 is a view of the key used with the lock.

Figure 9 is a view of the member which is pivoted to the carriage pivot bolt and to the inner end of the latch bolt.

Figure 10 is a view of the knob operated member for actuating the latch bolt.

Figure 11 is an end view of said member.

Figure 12 is a view of the keeper member.

Figure 13 is an end view of said keeper member.

In these drawings, the numeral 1 indicates the lock casing which is pressed from a single sheet of steel and is formed with the openings 2 in one end thereof, one for the lock bolt 3 and the other for the latch bolt 4. Each opening is 50 formed by cutting the metal and bending the metal inwardly, as shown at 5, to form guiding means for the bolts. A suitable cover plate 6 is provided for the casing and this is held in place by the bolts or screws 7. A carriage 8 is pivoted 5 in the casing by the screw '7' and said carriage is also formed of a single piece of steel bent and cut, as shown in Figure 5, to provide the tongue 9, the dog 10 which is reinforced by the curved tongue 11, the projection 12 and the hook carrying part 13. This part 13 has one end of a spring 14 attached thereto, the other end being attached to an inwardly bent part 1 5 of one of the side walls of the casing. The projection 12 passes through an elongated longiv tudinally extending slot 16 in the bolt 3 and 65 the dog 10 is adapted to engage the notch 17 in the bolt 3 to hold the bolt projected or the notch 18 to hold the bolt retracted. Smaller notches 19 are placed between the notches l7 and 13 which act as safety notches. As will be I seen from Figures 1 and 2, the spring 14 tends to hold the carriage 8 in a position with the dog 10 engaging one of the notches in the bolt, but permits the carriage to be swung upwardly when the key 20 is placed in the

keyhole

21 and 7 turned to the position shown in Figure 3, so that the carriage is moved to a position where the dog will move out of a notch, as also shown in Figure 3. A part of the key will engage the tongue 9 when the key is turned so as to raise the carriage and then upon further movement of the key, its wards 22 will engage the V-shaped notches 23 in the bolt to shift the lock bolt 3 from projected position to retracted position. The projection 12 limits sliding movement of the bolt and, as shown in Figure 4, the bolt 3 is formed of a plurality of plates 25, alternate plates being provided with deeper notches 23 than the other plates, as shown in full and dotted lines in Figure 3, so that portions of the key will engage some of the plates, while other portions of the key will engage the other plates. This renders it impossible to unlock the bolt unless the key for which the lock is designed is used. By substituting other plates for the original plates forming the bolt, the lock can be changed for use with another key. The top plate, as viewed in Figure 4, is made longer than the other plates, with its extension bent back upon itself, as shown at 25, so as to engage the top of the casing, this extension being the same thickness as that part of the carriage on which the bolt slides, as shown in Figure 4.

A member 26 is pivoted to the screw '7' and has an upstanding lug 27 at its free end which passes through a hole in the inner end of the latch bolt 4 and a triangular shaped member 28 of U- shape in cross section has openings 29 therein for receiving the knob stem 30 and by turning the knob, the member 28 is rocked to retract the latch bolt, the latch bolt being normally held projected by means of the spring 31 having one end attached to the inner end of the casing and its other end connected to the bight of the substantially U-shaped part 26 of the member 26.

This latch bolt is also formed of a single piece of steel, the front part of which is of channel shape with the bight part of the channel cut and bent, as shown at 4' in Figure 6, which forms a rounded outer end for the bolt. This formation of the latch bolt not only enables it to be formed of one piece of metal, but also makes it of considerable strength.

A slit 4 is formed in one side of the bolt 4 and said side, to one side of the slit, is bent inwardly, as shown in Figure 6, so as to provide a keeper for the night latch 31 formed of a strip of metal having its inner end held in a space formed by the bent-over part 32 of the casing. as shown in Figure 2, with its front end cut and bent to form a dog 33 for engaging the keeper member formed by the slit 4" and a finger piece 34 which passes through a slot 35 formed in the top of the casing. Thus by moving the member 31 rearwardly and downwardly, to place the shoulder of the part 34 under the bent-up part 36 at the top of the casing, the dog 33 will engage in the slit 4 and thus hold the latch bolt 4 in projected position, as shown in Figure 2. When the latch bolt is to be used in an ordinary manner, the member 31' is moved forwardly and upwardly to place the shoulder of part 34 over a part of the top of the casing, as shown in Figure 1, so that it will not engage the latch bolt and the same can be moved in the ordinary manner by turning the knob.

The keeper member 37 for the two bolts is also formed of a single piece of metal bent and shaped as shown in Figure 12, with an edge of the top part of the keeper member curving upwardly and outwardly, as shown at 38, to form a striker plate for the latch bolt, so that as the door is being closed, the latch bolt will strike the plate 38 and be moved inwardly against the action of the spring 31 and then as the latch bolt passes the plate 33, the spring 31 will move it to projected position.

It is thought from the foregoing description that the advantages and novel features of the invention will be readily apparent.

It is to be understood that changes may be made in the construction and in the combination and arrangement of the several parts, provided that such changes fall within the scope of the appended claims.

What is claimed is:

1. In a lock of the class described, a bolt formed of a plurality of superimposed sections, a pivoted member upon a part of which the inner end of the bolt slides, said bolt having an elongated slot in its inner part, a projection on the pivoted member extending through the slot, a dog on the pivoted member and the bolt having notches therein engaged by the dog when the pivoted member is in lowered position, said pivoted member being adapted to be rocked on its pivot by a key for raising the dog out of a notch in the bolt and said sections of the bolt having key engaging notches therein of different sizes whereby the key will retract the bolt and spring means for normally holding the pivoted member in lowered position.

2. A lock of the class described comprising a casing formed of a single piece of steel, a bolt slidably arranged in the casing and formed of a plurality of plate-like sections of steel, a member pivoted in the casing formed of a single piece of steel and provided with a dog, a tongue on which a part of the bolt slides and a projection, said bolt having an elongated slot therein through 95 which the projection passes, said pivoted member having a hook-shaped part thereon, a spring connecting the hook-shaped part with a part of the casing for normally holding the pivoted mem ber in lowered position, said bolt having front and rear deep notches for engagement by the dog for holding the bolt in retracted or projected position and shallow safety notches arranged between the deep notches, the plates forming the bolt having notches therein for receiving portions of a key and said tongue being adapted to be engaged by a part of a key for moving the member on its pivot for moving the dog out of engagement with a notch in the bolt, the notches of alternate plates being deeper than those of the other plates.

3. A lock of the class described comprising a casing, a member pivoted therein, a dog on the member, a tongue on the member, a projection on the member, a bolt having a slot therein through which the projection passes and said bolt having notches therein for receiving the dog for holding the bolt'in projected or retracted position, said bolt also having key engaging notches therein whereby a key will project or retract the bolt and move the pivoted member to free the dog from a notch,

, e. A lock of the class described comprising a casing formed of a single piece of material, a bolt slidably arranged in the casing, a member 125 pivoted in the casing and having a dog thereon and the bolt'having notches therein, a spring for normally holding the pivoted member with the dog engaging a notch for holding the bolt in retracted or projected position, said pivoted mcm- 130 ber being adapted to be moved by a key to a position to release the dog from a notch and key engaging means on the bolt for retracting and projecting the bolt by a key.

SAMUEL COOPER.