US162164A - Improvement in coivlbination-locks - Google Patents

Description

W. GILFlLLAN.

Combination-Lock.

Patented April 20,1875.

W/TA/Es SES //M M Mm I THE GRAPHIC C0.PHBTU.*LITH.39&4I'PARK PLACE, N.Y.

Sra'rns rrrcn.

lVILLIAM GILFILLAN, OF SYRACUSE, NEl/l'T YORK.

Specicaticn forming part of Letters Patent No. E62, 161A, dated April 20, 1875; application filed July 13,1s74.

To all whom it may concern:

Be it known that I, WILLIAM GILFILLAN, ot Syracuse, county of Onondaga and State oi' New York, have invented certain Improvements 1n Permutation-Locks, of which the;

following is a specification:

Figure l is a rear view, with the side of the case removed, with the parts in such position that the bolt can be thrown back. Fig. 2 is a vertical transverse section taken through line x ar, Fig. l. Figz is a longitudinal section of the operating-spindle, with the tubular nuinerical disks and tumblers. Fig. 4 is a view of the same, taken from the inside of the lock. Fig. 5 is a detached view ot' one of the tubular numerical disks. Fig. Gis a rear view, with the spur of the check-bar resting on the periphery ot' a tumbler.

In the drawings, A is the shell or casing of the lock. B is the bolt, which is thrust forward by the spiral spring bl. 1 represents the spindle ot' a commond knob for withdrawing the bolt. Y b2 isa tlange or lip projecting downward from one side of the bolt near its inner end, as shown in full linesin Fig. l, and in full and dotted lines in Fig. 2. This lip is notched or recessed to receive an arm, h, (see Fig. 1,) as will be hereinafter fully explained. k is a stoparm, projecting from and at a short distance below the lower edge ot' the bolt B. a al c al are a series ot' concentric, tubular, numerical disks or dials, mounted upon the operatingspindle c, (see Figs. 2, 3, and 5,) each having uponthe periphery of its ilange a series ot' ijgures. ln the drawings I have represented ten upon each, from Oto 9, inclusive. Each of them has longitudinal grooves o upon the inner end ot the tubular part a', numbered to vcorrespond with the numbers on the flange.

(See Figs. d and 5.) b are tumblers, four in number, and each mounted upon one of the tubular dials, the dials being on the outside of the lock and the tumblers on the inside. (See Figs. 2 and 3.) Each tumbler has a spur, d, which may be made to engage at will with either one ofthe grooves 0in the tubular dials, as is shown plainly in Fig. 4. Each tumbler is further provided upon its periphery with series of notches t' and j, corresponduig in number and position to the grooves in the tubular dial upon which it is to be mounted, as

' flange or lip b2 of bolt B.

in Fig. et. Each dial has apin, c2, Figs. 2 and 3, by means of which the dial can be conveniently rotated. h is an arm, secured tothe inner end'ot' spindle e by a nut, e', the upper end of the arm entering the notch in the c, Figs. 1 and'G, is a check-bar, pivoted at c. There are four of these check-bars, and the free end of each is provided with a spur, m, which engages with the notchesz'andjin the tumblers. The length ot' these check-bars is such that when the bolt Bis thrust forward the bars will, when vibrated about pivot c, pass in close proximity to the rear end of stop-arm k. Each checkbar has a spring, n', which serves to press the free end of the bar down upon the tumblers. f is a shaft attached to knob g, and carries a lip,f, which, when turned into a nearly vertical position, so as to enter notch a, will lit't the check-bars c above stop-arm k, as shown in dotted lines in Fig. 1. By an examination ot' Figs. l and 2 it Will be seen the arm L serves to contine the check-bars in their proper position above the tumblers, and there is roomV for these bars to pass up behind the lip b2. rlherefore, when the check-bars are raised up into the position shown by dotted lines in Fig. 1, which can be done by turning the shaft f until lipf enters notch n, the lock can be used as an ordinary latch-lock, the outer end ot' bolt B being beveled upon one side for that purpose.

ln arranging or changing the combination, first remove the back plate and lift up the check-bars, as in dotted lilies, Fig. 1, in which position they may be conveniently held by thrusting the stop-arm lc under them. 'When preferred, the spiral spring b1 may be taken out, so that the bolt will remain where placed. Next uuscrew nut e and take off the arm It and the tumblers. Having determined upon the formula ot' sequence otl numbers upon which to set the locksay 18M-place the tirst tumbler, with its spur d, in the groove of the tubular dial nearest 4:, which groove will be found just to the left of that figure; put the next tumbler on the next dial, withits spur d in the groove marked 7, and so on; or, it' preferred, the order or sequence may be reversed. lt will be observed that the spur d is immediately below the notch z', which is much deeper than any of the other notches, j, in the tumbler. lt is so much deeper that when spur m on the check-bars c falls into the notches i, the free ends of these bars fall below arm k, as shown in Fig. 1, so that the holt B can be thrust back, and it will be readily seen that when the dials are all turned so that the number 1874 in this order is uppermost toward spur m, the notches i will also be turned up; and the check-bars will fall so low that the bolt can be thrust back. The pins a2 will facilitate the manipulation of the dials; in fact, this lock can be opened in the dark by any one familiar with the combination of numbers employed in locking it, as follows: Turn each dial until the pin a2 is on top; then turn it (the dial) to either the right or left, as may be most convenient, counting` the notches j as they pass spur m until the proper number is at the top, the pin a2 being placed between the highest and the lowest ligure of the series.

Vhen all of the spurs m have fallen into the notches i, the bolt may be thrown back by either the operating-spindle e and arm h, or by the spindle represented at I.

l. The tubular dials a co1, provided with numbers upon their outer flanges, and with the 4. The combination of the arm I1', the lip b2,

and the check-bars c, whereby the arm h serves sa a guide to insure that the check-bars shall enter behind fia-nge b2, substantially as set forth.

5. The combination of the shaft f', provided with the lipf, the check-bars c, and the arm k on bolt B, whereby said check-bars may be lifted and suspended above arm k, so that bolt B may be operated as an ordinary latch-lock, substantially as set forth.

WILLIAM GI LFILLAN.

Witnesses:

E. M. WHEELER, W. F. HALL.

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