US113316A - Improvement in combination locks - Google Patents

Description

SAMUEL Lornqor NEW Yorin, N, Y.

` Letters Patent l\lo.'113,316, dated 'April 4, 1871.

IMPRovi-:MENT IN coMBlNTIoN LoKs.

The Schedule referred to in these Lettera Patent and making pax-tof the same.

' I, SAMUEL Lop, of the city and county of Newv York,I have invented certain Improvements in Locks,

of which the following is a specification;

Nature and Object of the Inc-cation.

The object o i' my invention is to constrnct'an inexpensive, simple, and convenient permutation lock, in which the combinations are set, and the lock unfastened, by the turning of a handle or knob to certain points indicated upon the dial, and requiring no key.

-The nature of my invention relates to the peculiar form and combination of rollers and friction springs,

and to the adjustable pin by' which the notches are` directed to their proper 'positions for receiving the ratchet which draws the bolt.

Descr-@tion of the Accompanying Drawing.

Figure I is a front view of the lock as fastened uponY rollers and friction springs, designed for purposes now to he explained.

`irvcnerai Description;

In the accompanying drawing- Fig. 2 represents my principle .or invention as ap plied to a spring or snap-lock, the bolt of which, A,

is pressed forward by the curved wire spring B.

@ne end of the spring B is made fast to the rivet i) upon which the bolt turns, while the other end is hooked to the ratchet D and serves to maire it press upon the wheel E,besides serving as a bolt-spring.l 4

The wheel E is either cast from one piece of metal with the shaft of the knob of the lock, or is made permanent-1y fast toit, so that, vwhen the ratchet'l) enters the notch furnished upon the wheel E, it connects with the bolt A, which is then drawn back by turning the knob. l

Upomone side of the wheel E is placed a roller of thin metal, F, iig. y5, also furnished with a notch, so that the ratchet can Vonly'enter when both `of the notches are brought together.

This roller turns freely upon the shaft of the wheel E, and is merely held in its position by a small friction spring', G, passing through'the shaft and pressing it against the wheel E, iig. 5, so that it will revolve with- .When the notch H is formed in this roller F, iig. 5,4 the small piece of metal is bent so as to form a tooth standing out at right angles from the side. A pin inserted in theback of the lock I, iig. 3, comes in 'contact with the tooth as the main wheel E is revolved, and holds the roller until the two notches are brought together, whereupon reversethe motion until the proper point is reached for the ratchet to enter.

Fig. 4 shows the back ofthe lock with a' series oi holes corresponding t0 the number of figures upon the front dial, so that, `by inserting the pin I into different places, it will -vary the point at which the roller F will be stopped, and,.therefore, allows you toset the lock to as manydifterent combinations. It will be observed that it is only the first letter, however, which is capa hie of being thus changed.

In addition to the roller F to prevent the ratchet D from enteringithe wheel E, another thin piece oi' metal is added, which is also itted'loo'sely upon the shaft and pressed against the main wheel by a friction spring; but', being provided with two points or guards which come in Contact with the ratchet, it is prevented from revolving but a short distance with the wheel, (see J in iig. 2 and fig; 5.) Its surface represents a .small segment of a` circle between the guards K K, iig. 5, and a notch, into which the ratchet must of necessity pass when entering those of the wheelE and roller i?.-

ratchet, and therefore necessitates the junction ofthe notches at a point ywhich is suiicientiy distant to prevent the ratchet from betraying tothe sense of touch. v

Y Also, to prevent the ratchet from bearing upon the raising and throwing the ratchet out oi' the notches by a continuation of a forward movement.

supposing the lock n ow to be set to A. X YSimply turnthe knob M backward, as in unwinding, until you have made one entire revolution, and the arrow points exactly at the letter A; then reverse the movement, and turn forward until you reach the letter'X;

their turn back again toward the rst letter; :and the ratchet fastens once upon the wheel drawn backward. v

C' lat'ms.

and the boit is i I claim as my invention- 1. Slotted movable guards, rollers,4 or segments scribed by E F J, substantially as and for the purpose*4 Y hereinbet'ore set forth.

2.- .A wheel or segment thereof revolving upon the same axis with theother rollers by means of a. friction spring, furnished with small slot for receiving the dog, and also provided with projections which limit its movements by coming 4in contact with the dog, substantially as and for the' purpose hereinbefore set forth.

v3. The combination of the bent tooth of the roller l F with the stationary pin Landthe series of holes in the back plate, as in iig. 4,'for making changes with out taking the lock apart, asl and, for the purposes hereinbeforcset forth.'

Y Y i SAMUEL LOYDV..

Witnesses:

WtB. EUTNEY, JAs. R. ADAMS.

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