US1212381A - Lock. - Google Patents

Description

E. M. MILLER.

LOCK.

APPLICATION FILED MAY 4. 1914.

l ,2]; 2,31 Patented Jan. 16, 1917.

areniom' (h w/w LOCK.

Specification of Letters Patent.

Patented J an. 16, 191?.

Application filed May 4, 1914. Serial No. 836,133.

I hereby declare the following to be afull,

clear, and exact description of the invention,

such as will enable others skilled in the art to which it pertains to make and use the same.

This invention relates to new and useful improvements in combination locks, and particularly to the type of locks known as box or chest looks.

The object of this invention is to pro-' vide a lock of this character which will be very strong and compact and which can be cheaply manufactured.

Vith this object in view and to the end of securing other advantages which will hereinafter appear, this invention consists in certain features of construction and co'mbination of parts, illustrated in the accompanying drawings, described in the specification and pointed out in the claims.

In the accompanying drawings, Figure 1 is a view of my improved chest lock, with the back of the lock casing removed and showing the lock members in engagement. Fig. 2 is a section on line 2-2,'Fig. 1.

Fig. 3 is a section on line 3-3, Fig. 2. F ig.'

4 is a section similar to Fig. 2 showing the lock members separated. Fig. 5 is an exterior view of a portion of the lock casing.

Referring tothe drawings, it will be seen that the lock casing is formed in two sections, one of which sections comprises the back plate 6, and the front end of the casing, shown at 7, and the other section comprises the front plate '8, the two-sides 9 and the rear end 10. The two sections of the casing may be secured together in any preferred manner, and, as 9 and the rear end 10. are provided with tongues 12 which are adapted to extend through slots 13 formed in the back plate 6. In each of the sides 9 near the front end of the casing are formed recesses, shown at 14c, and the bottom wall of each recess 14 is inclinedlongitudinally. A locking bar 15 extends from side to side of the look casing near the front end thereof and the ends of said bar 15 are seated on the inclined bottom walls of the recesses 1d. The

shown, the sidessaid bar is therefore supported at an angle to the front plate 8, but is free to be swung up or away from said plate so as to assume a position approximately parallel with said front plate 8. The said bar 15 is provided with a lip 16 which is arranged at an angle to the said bar. To the front plate 8 is secured a small plate 17 which is provided with slotted flanges 18 which form guides for a slidable bar 19 which is arranged at a right angle to the locking bar 15. The forward end of the bar 19 extends under the said locking bar 15 and is provided with a lug 20 having a beveled face adapted to come in contact with the lip 16 on said locking bar 15. Between the opposite end of said bar 19 and the rear end of the casing is arranged a coiled spring 21 which normally holds the said bar 19 in its forward position. On the'end of said bar 19 adjacent to the spring 21 is arranged a lug or projection 22. i The front plate 8 is countersunk at its center, as at 23, and is provided with openings 24. A sleeve or barrel 25 is secured to the front plate by means of tongues 26 which extend into the openings 24: so that the said barrel projects forwardly from the outer face of the said plate. The combination disk is'shown at 28 and this disk has a hub 29 wiich is journaled in an opening 27 in the front plate 8. The said combination disk 28 is secured on the inner end of a spindle 30 which extends through the said barrel 25 and on the outer end of said spindle is secured an operating knob 32. On the face of said disk are arranged a series of cams or ridges 34 and a stop forming projection 35. A lever 36 is pivotally mounted at one end at one side of the disk 28 and the said lever 36 extends across the face of said disk and its free end is arranged to engage with'the lug 22 on the bar 19. The said lever 36 carries a pin 37 which extends toward the face of the disk 28 and is adapted to be engaged by the ridges 34'; on the said disk; The stop 35 on the said disk is so arranged that when the disk is rotated in one direction the said stop 35 will come in contact with'the pin 37 on the said lever 36 and the rotation of the disk will be stopped and this position of the disk is the starting position for any given combination. The ridges 34 are so arranged that when the disk is turned back and fortha whole or part of a revolution a number of times according to a predetermined plan the pin 87 will travel from ridge to ridge constantly moving farther from the center of the disk and thereby causing the free end of the lever 36 to travel toward the rear end of the casing and come in con tact with the lug 22- on the said bar 19, thereby shoving back the said bar 19 and bringing the lug 20 on the front of the said bar 19 in contact with the downwardly extending lip 16 on the locking bar 15 which causes said bar 15 to swing up. Around the perimeter of the disk 28- are formed notches 38 and at the side of the disk is arranged a spring 39, one end of which presses against the perimeter of the said disk. When the disk is turned, the end of the spring passing over the notches 38 produces a clicking sound and also causes a slight interruption to the regular movement of the disk and thereby indicates both to the sense of hearing and to the touch what portion of a revolution the disk has been turned through.

The member of the lock which is secured to the lid of the trunk consists of a plate 10 which is adapted to be secured to the lid of the box or chest and is provided with hookshaped members 41. These hookshaped members are arranged to enter the lock-casing through openings 42 formed in the front end of the casing and extend between the locking bar 15 and the front plate 8, and the hooked ends of said members 41 are adapted to tilt up the inner edge of the locking bar when they pass under the same, and after the hooked ends have passed under the said bar 15 the bar moves down again and engages with said hooks. A spring 14 is secured to the back plate 6 and is adapted to hold the said bar 15 yieldingly on the inclined walls of the said recess. A spring 45 is also secured to the back plate 6 and bears against the lever 36.

The operation of the lock is as follows When the lid of the box is closed the hook members 11 enter the lock casing behind the locking bar 15 and as the hook members enter the casing they swing back said locking bar while passing under it and the locking bar then swings down and engages with the hooks, thereby securing the hooks in the lock casing. Now, when it is desired to open the box, the operating knob 32 'is turned back and forth so as to turn the combination disk through such portions of a revolution as may be necessary to operate the lever 36 and cause the same to travel or swing toward the rear end of the casing and engage with the lug 22 on the bar 19. When the lever engages the said lug the said bar 19 is drawn back and as the bar 19 moves back the lug 20 on the end thereof engages with the lip 16 on the locking bar 15 causing the said locking bar to swing up and thereby release the hook members so that the hooks can be disengaged from the lock casing.

What I claim is 1. In a chest lock, the combination with a plate having a hook shaped member rigidly secured thereto, of a lock casing provided with an opening for receiving said hook shaped member, a horizontally arranged locking bar supported in said casing and capable of rocking on its supports, said locking bar being adapted to engage with said hook shaped member, a bar mounted in said casing and free to slide in its mountings, one end of said slidable bar being arranged to engage with said locking bar and rock it out p of engagement with said hook shaped member, means for resiliently holding said slidable bar against movement and means for actuating said bar.

2. In a chest lock, the combination with a plate having a hook shaped member of a casing provided with an opening for receiving said hook shaped member, a locking bar arranged in said casing and capable of rocking on its supports, said locking bar having an edge adapted to engage with said hook shaped member, means for resiliently holding said locking bar in engagement with said hook shaped member, a bar slidably mounted in said casing and having one end adapted to engage with said locking bar and rock said bar out of engagement with the said hook shaped member when the said slidable bar is moved longitudinally and means for actuating said bar.

3. In a chest lock, the combination with a plate having hook shaped members, of a cas ing provided with an opening for receiving said hook shaped members, a horizontally arranged locking bar supported in said casing and capable of rocking on its supports, said locking bar having one edge adapted to engage with said hook-shaped members and havlng a tongue arranged at an angle to I- said bar, a bar slidably mounted in said oas- 7 ing and provided with a lug arranged to extend under said locking bar and engage with the tongue thereon and means for actuating said slidable bar to bring it into engagement with said tongue on said locking ar.

4;. In a chest lock, the combination with a plate having hook shaped members rigidly secured thereto, of a casing provided with openings for receiving said hook shaped members, said casing having recesses in the sides thereof, the bottom walls of said recesses being inclined, a locking bar arranged in said casing and extending horizontally from side to side thereof and having its ends resting on the inclined wall of said recesses, one edge of said locking bar being adapted to engage with the hook shaped members of the plate, said locking bar being also provided with a tongue arranged at an angle In testimony whereof, I sign the foregothereto, a bar slidably mounted in said casing specification, in the presence of two 10 inlg ind pravidercl1 at 0(I11e1 end with a lug Witnesses.

w ic exten s un er sai ocking ar and is adapted to engage with the tongue on said EDWARD MILLER locking bar and means for actuating said Witnesses:

slidable bar to bring it into engagement with C. M. DAVIS,

said locking bar. J. B. MILLER.

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

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