US121711A - Improvement in bolts for safe-doors - Google Patents

Description

JoHN FARREL o Aooo wmmo.

.f Bolts` for Safe Doors. No 121 Ovement In Patented Dec.12,1o71.

UNITED STATES ATET JOHN FARREL AND JACOB WEIMAR, OF NEW YORK, N. Y.

IMPROVEMENT IN BOLTS FOR SAFE-DOORS.

Specification forming part of Letters Patent No. 121,711, dated December 12, 1871.

To all whom it may concern:

Be it known that we, JOHN FARREL and J Aeon WEIMAR, of the city and county of New York, ,State of New York, have invented certain Improvements in Bank-Locks; and the following is a specification thereof, reference being had to the accompanying drawing which forms part of this specification.

Our said invention consists in the arrangement and combination, with a double lock or with two locks, of independent bolts worked by a trame carrying a device termed a frog, the same being operated in connection with a stationary fork, and with the latches or latch-bolts ot' the lock or locks, substantially as hereinafter specitied.

To enable others skilled in the art to make and use our invention, we will proceed to describe the same.

The annexed drawing represents the invention as seen in practical use upon a door.

A is the door, the whole not being shown. B is a plate ot' metal, constituting part of a frame to which the main bolts O D are connected. This frame and with it the bolts, which are entirely independent ot the lock or locks, are worked from the outside ofthe door by a suitable handle on a spindle, E, (dotted,) that extends inward through the door, and carries the disk or crank F having a crank-pin, I, (do.tted,) arranged in a slot in the frame or plate B. Upon a stud, J, made fast in said plate there is mounted the device K, termed the frog. This has arms l l at the right, and at the left is ot' pointed shape, conforming to a reentrant angle between the prongs of a fork, G, thatis iixed to the bar H near the edge, and which may form part of the frame ofthe door. M is a double lock or two locks havinglatches or latchbolts N O, each controlled by adistinet and separate locking mechanism. Said latches have small lugs n o, darkly shaded for prominence; and the arms ot' the frog abut against them, and thus prevent the retraction of the main bolts C D when thrown out or protruded on closing and securing the door. P is a fastening-pin that is threaded into the frog, so as that it may by turning be screwed into a hole, p, in the plate B immediately behind it, and thus fasten the frog in the normal position thereof, represented in Fig. 1. When so fastened, if both latches be locked as seen in Fig. l, it will be necessaryY to unlock both before the main bolts can be retracted. This provides for such contingencies as require that two persons-tor example. two otticers otl a bankshall be present, and both oiiiciate in opening the door.

On other occasions, however, it is desirable to have a lock or locks and coacting bolts so contrived that, while it shall require the use oi' two distinct and separate keys or combinations to se cure the door, such door may be opened by the use oi' one of the keys only. ln such case the fastening-pin P is unscrcwed and withdrawn from its hole p in the plate B,releasing the frog; then the unlocking ot' one ot the latches, as shown in Fig. 2, for example, will permit the retraction ot' the main bolts. In said Fig. 2 the upperlatch is seen unlocked and thrown down so as to clear its lug u from the corresponding arm of the frog, which, being` now free to move on its stud, the throwing back ot' the main bolts, in manner hereinbefore speciiied, to the points indicated by the dotted lines s, will cause it to swing around into the position shown in Fig. 2. A similar result ensues when the lower latch only is unlocked. Throwing it down is indicated by dotted lines in Fig. l. It will now be apparent that, when the frog is Jfastened in the position seen in Fig. l, it cannot turn on its stud, and hence the main bolts cannot be retracted until both latches have been unlocked and removed from behind the extremities ot' the frog, as hereinbetbre explained.

Ve are aware that it is not new to have the main bolts so arranged with two locks that they may be retracted when either latch or latclrbolt is unlocked; or so that to permit such retraction both latches must be unlocked.

Vhat we claim as our invention, is-

The arrangement and combination, with the double lock or with two locks, of the independent bolts worked by a suitable frame carrying the frog, and operating in connection with the stationary fork and the latches of the locks, substantially in the manner and t'or the several pur poses speciiied.

JOHN FARREL.

Witnesses: JACOB YVEIMAR.

ELIJAH T. SHERMAN,

SAML. WrLKrNs. (93)

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