US69115A - Improvement in trunk-locks - Google Patents

Description

.TO ALL WHOM IT MAY OONCERN:

@einen gisten getest @fitta ANILS NARD, OF HAVRE i DE GRACE, MARYLAND;

Letters Patent l-Vo. 69,115, dated September 24, 1867. i

IMPROVEMENT IN TRUNK-LOGKS.

Be it known that L'NILS NARD, of Havre dc Grace, in Harford county, and State of Maryland, have invented a new and useful improvement in Locks for Doors, Chests, Lc.; and I do herehydeclare that the following is a full, clear, and exact description thereof, reference being had to the accompanying ,dra-wing,

through letters of reference marked thereon, forming part of this specification, in which- Figure l represents a front view of the lock, the face-plate of the casing being removed, and the plate to which the bolts are attached being shown in red outline. I

Figure 2 is an inside or inverted view of the face-plate; and

Figure 3 is a detached View of the staples of a chest-lock as here represented.

My invention has reference mainly to that class of locks known as night-latches, spring trunk-locks, orv

the like, but with slight modifications may be applied to every kind of look; andit consists in the interposition of a pivoted attachment to the bolt or bolt-plate, through the medium of which the key operates on thev bolt instead of upon the bolt itself, as in the ordinary lock; also in the combination with said intermediate piece of a spring-catch for retaining it in position out of reach of the key.

To enable others skilled in the art to make'and use myinvention, I will describe its construction and operation by referring to the drawings, 'in whicli-v i I A represents the easing of the lock, which may be constructed of any form suitable for the purpose for which the lock is intended to be used, a chest-lock being the character represented in the drawing. Within this case is fitted a plate, B, which carries, and -to which are firmlyattached the bolts C. This plate has a sliding motion longitudinally, in which it is guided and stayed at either end by the T-shaped guides D, and is pressed forward into its locked position by the spring E at its rear. To the inner side of the plate Bis rrnly attached a pivot, c, on which is supported the intermediate vibrating dog or piece, c, through which the key operates to retract the bolt. This piece c is ot' peculiar formation, being somewhat of a Tform, with a lower and two lateral limbs, and is controlled by a spring, F, attached at c to the inner side of the plate B. The extension d of this spring is of similar conformation on its under sido to that ofthe upperv side of the piece c, or thc lateral limbs thereof. A spring-plate, G, represented in dotted lines, of a curve-d or any convenient form, is attached to the rear 'outside of the casing by a screw or rivet at f, and at its opposite end is held in position by a stud or screw, g, the head of which serves to limit its motion, and to this spring is attached the stem h, over which the pipe of the key fits, and also a stub or catch, m, which serves to retain the piece c in its position out of reach of the key The spring Z, .attached by a rivet or screw, 92., to the inside of the face-plate, bears by its two ends on the bolt-plate B, and serves to keep it in place on its guides D. Surrounding the keystem 7L, I arrange a series of springs, ic, attached at their ono end to the inner side of thev easing A or its face-plate, whilst their other ends are free, and arranged at such distance from the key-stem that in turning the key they will be struck by it and caused to vibrate, whereby sound similar to that of a bell is produced to give alarm, and indicate an attempt to open the chest or door.

Having thus described the several parts of my lock, its operation will be as follows: The several parts of the lock being in the position represented in iig. 1, the key may be inserted and turned in either direction, and no other effect will be produced than the striking of the springs le, and producing sound therefrom to create an alarm. In order to operate the lock it is necessary first to depress the spring G by pressure on the end of the Ystern z, which will cause the stub or catch n attached to said spring to recede and liberate the piece c, allowing it to fall into the posit-ion represented by red lines at o', in which position, if the key vis inserted and turned to the right, said piece c will vbe thrown hack to its original position, and no effect produced upon the bolt; and if said key is turned to the left, the piecc c will yield and allow it to pass, also without having any effect upon the bolt. But in order to operate the bolt, the piece c, being liberated from thc catch m, and assuming the position represented at c', Aas before described, the key must be inserted and turned to the left until the ongle 1' of the concave end of the lower limb of the piece c is allowed to pass the nose ofthe key, when its further motion will be arrested by the angle s of thc lower limb of said piece e coming in Contact with the said nose of the key in the position represented in blue lines c. When this position is attained, which is easily done by a person who understands the operation of the lock, the key is to be turned to the right, when the bo1t-piate B will belfoi'oed boek, by the key bearing against Athe lower limb of che 'piece o, into the position represented in dotted red line-s :Lt 0', when'the bolts will be withdrawn from the staples or the mortise, as the case may' be. On releasing the key 'che several parts will resume the position represented at c, after which the key should be turned slightly to the left; to allow the piece c to fall into the positonrepresented at o,wlien it should be turned to the right and withdrawn, which will leave' the piece c in its normal position, ont of' reach' of the key, until released from the stub m', os represented in the drawing, fig. 1. v

Having thus fully described tho construction finllopei'a-tion of my look, what I olnim as now, and desire to secure by Letters Potent, is- Y ll. The vibrating dog 01j piece c, pivotod or hinged to the bolt-plote for the purrpose of retract-ing the same, substantially as described.

2. The combination of tlic'vibroting dog or piece c, spring-cath m, and spring-lever d, substantially as :ind operating in the manner set forili,

3. The combination of the pipestem )i with the spring G, .ooi-tying the stud m and clog e, substantially as and for the lioni'poses speoiiied.

In testimony whereof I hereunto subscribe my name lthis 2d day of May, 1867. n

' NILS NARD.

'Witnesses SYDNEY E. SMITH, W; MORRIS SMITH.

Images