US592835A

US592835A - Inger selwyn

Info

Publication number: US592835A
Authority: US
Publication date: 1897-11-02
Anticipated expiration: 1914-11-02

Description

(No Model.) 3 Sheets-Sheet 1. W. s. SELWYN.

LOCK.

Patented Nov. 2 1897.

INVENTOR (No-Model.) 3 Sheets-Sheet 2. W. M. S. SELWYN.

LOOK. No. 592,835. Patented Nov. 2, 1897.

WITNESSES: I INVENTR v wfiw \im Axsm gw.

rug '4 (No Model.) v 3 Sheets-Sheetfi.

W. M. S. SELWYN.

LOOK.

No. 592,835. Patented Nov. 2, 1897.

WITNESSES: INVENTOR Q f/ \KmWMMM AW.

UNITED; STATES PATENT rrrcn.

WILLIAM M. SOHLESINGER SELWYN, OF PHILADELPHIA, PENNSYLVANIA.

Loo K.

SPECIFICATION forming part of Letters Patent No. 592,835, dated November 2, 1897.

Application filed September5,1896. Serial No. 604,973. (No model.)

To all whom. it may concern.-

Be it known that I, WILLIAM M. SCHLES- INGER SELWYN, a subject of the Queen of Great Britain, residing at Philadelphia, in the county of Philadelphia and State of Pennsyl: vania, have invented certain new and useful Improvements in Locks; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention has relation to improvements in looks, with special reference to such locks on and about receptacles for the temporary reception and keeping of articles of value, and has for its object as well the avoidance of the complication and delay incident to the use of a combination-lock as the provision of greater safety where a number of persons use such a receptacle successively. These are obtained, first, by the provision of a lock having changeable locking adjustments; second, by means whereby the adjustment of the lock is changed upon its successive use, and, third, by the furnishing to the user another and different key upon'its successive use, such key being the only one which will unlock the lock for the time being. I obtain these objects by the mechanism illustrated in the accompanying drawings, in which Figure 1 is a top View of the lock. Fig. 2 is a vertical section. Fig. 3 is a cross-section on line 1 2, Fig. 2. Figs. 4 and 5 are top views of the tumblers of thelock in different positions. Fig. 6 is an end view of part of the tumblers in the position shown in Fig. 5. Fig. 7 is a vertical section of the lock on line 3 4, Fig. 1. Fig. 8 is a cross-section on line 5 6, Fig. 2. Fig. 9 is a cross-section on line 7 8, Fig. 2. Fig. 10 is a partial view of the magazine with its keys. Fig. 11 is a partial view of the interior surface of thecasing surrounding the magazine. Fig. 12 is top view of a portion of the locking-bolt of the lock and of the plate controlling its motion. Fig. 13 is a side view of the parts shown in Fig. 12. Fig. '14 is a section of the plate shown in Figs. 12 and 13. Fig. 15 is a side view of the catch controlling the motion of the magazine. Fig. 16 is a top View of the catch, and Figs. 17 and 18 are views of two keys used in the lock.

Similar letters and figures refer to similar parts throughout the several views.

' The lock consists of a casing A, attached to plate Band containing the cylinder or magazine O. This cylinderis provided withanu 1nber of slots, (marked 1 2 3 4, 850., up to 28.) Each slot is normally provided with two keys, as shown in Fig. 10, the keys being held apart and in proper position on the cylinder by means of the spiral groove 01, Fig. 11, cut in the inner surface of casingA. Through cylinder 0 and plate B passes bolt D, Fig. 2, provided at one end with nut E and at the other end with plate (1. Portion d of boltD is of larger diameter than the part that passes through cylinder 0 and is provided with teeth, as shown more clearly in" Fig. 8. These teeth engage with teeth of the planet-wheel F. The teeth of thelatter also mesh with the teeth of the stationary segment G, which is fastened to the casing A. Planet-wheel F is provided with a short centrally-located shaft f, which engages with the fork H, the latter being loosely pivoted on bolt D. Fork H is provided with a radial slot, Figs. 2 and 8, in which moves catch it. Spring h presses this catch outwardly and causes it to engage with the ratchet-teeth c of cylinder 0. On turning, therefore, bolt D in the direction indicated by the arrow in Fig. 8 theplanet-wheel F will be moved in the same direction, and carries the fork H with it. On account of the inclination of the ratchet-teeth 0 cylinder 0 will not be affected by the motion in this direction. On, however,-reversing the motion of the bolt D the planet-wheel F will also travel in the opposite direction to that indicated by the arrow, and will carry along with it fork H and also cylinder 0. Although, therefore, the motion of H will be an oscillating one, cylinder 0 will rotate in one direction only. To further insure cylinderO from traveling in any direction but the desired one, catch T, Fig. 8, engaging with one of the slots of cylinder O, is provided. 'Handle I is attached to bolt D in such a manner that it can be moved from the position shown in Fig. 2 in full lines to'that shown in the same figure in dotted lines. When'in-the former position lug i of handle I passes through slots in plates (1, B, and K, so that on turning the handle I around the central line of D, as axis,it carries along withit bolt D and plate K, the latter being loosely pivoted on bolt D. The motion of I is limited by the slot 1) in plate B. This slot Z) is only at one place (corresponding to the locked position of the lock) wide enough to allow lug t' to enter it, and i is provided with a recess (shown at t", Fig. 2) which allows it to be moved in slot 1) and prevents its being pulled out, except when in the position above indicated. Bolt D imparts its motion, as already described, by means of the sun-and-planet transmission to fork II, and intermittently to the cylinder or magazine O. The latteris, however,prevented from turning in either direction until catch T is partially released by lug i of handle I on the latter completing its motion in the direction of the arrow in Figs. 1 and S, which corresponds to the motion for unlocking the lock. This is accomplished by providing catch T with a beveled surface 1, Figs. 15 and 1G, in the path of lug i, so that when the latter has come to the end of its stroke in this direction it will have moved catch T suificiently outward to allow cylinder O to be moved in the desired direction on the return stroke of I, but the longer face of catch T-7I. c., the face marked tstill prevents the cylinder C from moving in the opposite direction.

The length of slot Z) and the snn-and-planet transmission are so arranged that "each time the handle I is turned, first in one direction for unlocking the lock and then in the other direction for locking the look, a new slot of cylinder or magazine 0, with its correspond ing keys, is brought opposite to the openings a, a and a in casing A.

Plate K is provided with teeth, as shown in Fig. 12, which engage with corresponding teeth of the locking-bolt L, so that as K is moved backward and forward by handle I it will move L into looking or unlocking position. Attached to L by means of bolt l are a number of fork-shaped tumblers h M M M M and M. (Shown in Figs. 4 and 5.) These tumblers are pressed in against casing A by means of springs m, m m 012 ,772 and m. They are also provided with lugs c,which pass across opening a in casing A as the bolt L is moved forward into unlocking position. Should there now be a key in the slot of cylinder O opposite the opening a, the slots in this key will allow part of the tumblers M to drop in, or, in other words, to move closer toward cylinder 0, whereas the lugs on the key will hold the rest of the tumblers in their original position, as shown in Figs. 5 and 6. \Vhen in the position shown in these figures that is, after handle I has been moved a small part of the distance it has to move to unlock the locktumblers M, M M M M and M encounter fingers a, n n n m and a of the opposing tumblers N, N N N, N and N, and if these fingers are in positions corresponding to those of tumblers M they will enter between the jaws of the latter. Should, however, one of the fingers at not be in the proper position corresponding to that of its opposing tumbler M, it will strike against one or the other of the prongs of this tumbler i11- stead of passing between them, and thus arrest the further motion of the locking-bolt L. Tumblers N, N N N, N, and N are made U-shaped, as shown in Fig. 7, one end forming the already-mentioned fingers 11 and the other end being provided with lugs 6. These tumblers are pivoted on bolt 0 in such a manner that their lugs e are opposite the opening a of easing A, and the lugs are pressed into this opening and against the key opposite it by means of springs s, .9 .5 5", s and s.

\Vhen the lock is turned from its unlocked to its locked position by turning the handle I into the position shown in Figs. 1 and 2, bolt D turns the cylinder or magazine O, as described above, so that a new slot (slot 1) is brought into operative position opposite openings a, a and a of easing A. One of the two keys'in this slot 1that is, key 1'-will be opposite opening a and the springs s will cause the tumblers N to move into positions corresponding to the slots and lugs of this key, as shown in Figs. 2 and 9. Key 1 will come opposite opening a in casing A and will fall through this opening into the drawer P, as shown in Fig. 2. By pulling out this drawer the key can be removed by the user of the lock. hen thelock is in this its locked position, the slots in plates (2 and K and the enlarged part of slot 1) in plate 13 coincide with slot 1 of cylinder or magazine C, so that i can be withdrawn from these slots by turning the handle I into the position shown in dotted lines in Fig. 2.

To again unlock the lock, key 1 is placed into the slot in plate (Z and is pressed home into slotl of cylinder or magazine C by bringing the handle I back into the position shown in full lines in Fig. 2. Key 1 which before was underneath key 1, will now be above it and opposite opening a. On now turning handle I to unlock the lock bolt L will carry along with it tumblers M, moving them against fingers a of tumblers N; but before encountering these the lugs e of tumblers M will have engaged with key 1 and the tumblers M will be set in such a position that the fingers a can enter between the jaws of the corresponding tumblers M, as shown in Fig. 5, and the motion for unlocking can be completed.

On again locking the lock, slot 2 of cylinder or magazine C is brought into operative position, and tumblers M, moving back with bolt L, will again be in the position shown in Fig. 4. Key 2 is now opposite opening a setting tumblers N in a new position. Key 2 falls through opening a into the drawer I from where it is again removed by the user of the lock and placed into the slot in (Z for the purpose of unlocking the look. In this manner each of the twenty-eightslots of the cylinder or YOU magazine O,with its respective keys,isbrought successively into operating position. On using the lockthe twenty-ninth time slot 1 is again brought into position opposite the openings a, a and a but on account of spiral groove a in casing A key 1 ,which o'n unlocking the lock the first time was opposite opening a, is now opposite opening 0F, and key 1 is now opposite a and falls into the drawer P. The lock may therefore be used another twentyeight times, or altogether fifty-six times, before the same key is again fed to the user.

It is evident now that should any but the right key be placed in the lock the latter will not unlock, as unless this key sets all of the tumblers M in the proper position to allow the corresponding fingers n of tumblers N to pass between the jaws of the former the unlocking motion of the bolt L will be arrested.

To avoid the possibility of any unauthorized person trying to open the lock by trying a number of keys in it, one after the other, until the right one is discovered, plate K may be provided with catch R, Figs. 12 and 14, which moves in groove S of cylinder 0, Figs. 2 and 8. On turning the handle to unlock the lock this catch will readily pass over and beyond the key placed in the look before tumblers H encounter fingers '22. As, however, if the key be not the proper one, the motion will then be arrested before the lock is unlocked and before catchh of fork H has engaged with another ratchet-tooth of cylinder 0, the latter will not be moved by turning the handle I back again, and catch R will therefore engage with the key placed in the lock and arrest the motion of I in this direction also, as catch T, Fig. 8, prevents cylinder 0 from turning, I not having been able to complete its full stroke and release this catch. The handle I will therefore be placed in a position in which it can neither move forward nor backward nor be pulled out of the slot in the plate d to uncover the latter, as it cannot reach the end of its stroke to the place where the wider part of slot 2) in plate 13 will admit its removal.

To be mates the keys in the same slot of cylinder or magazine 0 must be so arranged that if the key opposite opening a has, for example, a slot near its upper part to engage with tumbler M the key opposite opening a must have a slot near its lower part to en-' gage with tumbler N and set finger n to correspond with the position of tumbler M. This latter key when dropped into the slot to come opposite opening a would therefore e11- gage with tumbler M, whereas its mate engaged with tumbler M. To insure the keys being dropped into the slot of plate d in the proper position, they are provided with grooves, as shown in Figs. 17 and 18, and the slotin plate K is provided with corresponding lugs, as shown at is, Fig. 12.

When the lock is unlocked, drawer P cannot be pulled out, as the locking-bolt L passes through the recess 19 of the drawer.

bolt L will permit its passage.

Only when the lock is locked can drawer P be pulled out, as in that position recess Z in Lug p prevents the drawer P from being entirely withdrawn from the lock.

By providing the lock with a larger or less number of tumblers any number of keys can be provided for the lock, each key being different from any of the rest, and by providing a corresponding number of slots in the cylinder or magazine 0 the lock can be made to be used any desired number of times before the first key used in unlocking it is fed out of the look again. It is obvious that the lock can be used indefinitely, as each key that has been removed from it has to be returned for the purpose of unlocking the lock, and therefore takes its proper position in the magazine.

What I claim as my invention, and desire to secure by Letters Patent, is

1. In a lock, in combination with two separate and independent keys, provided with suitable projections or indentations, tumblers engaging with the projections or indentations, and mechanism whereby the simultaneous use of both keys is required to unlock the lock, substantially as described.

2. In a lock, the combination of two or more keys normally stored in the lock, and mechanism whereby, on operating the lock, one of the keys is fed to the user of the same,

substantially as described.

3. In a lock, the combination of two or more keys normally stored in the lock, mechanism whereby the simultaneous use of two of the keys is required to unlock the lock, and mechanism whereby, on operating the lock, one of the keys is fed to the user of the same, substantially as described.

4:. In a lock, in combination with two or more keys normally stored in the lock, mechanism for feeding one of the keys to the user of the lock and for placing another key into operating position in the lock, and mechanism whereby the simultaneous use of both these keys is required to unlock the lock, substantially as described.

5. In a lock, in combination with two or more keys normally stored in the lock, mechanism whereby on the successive use of the lock another and difierent key is fed to the user of the same, and another and different key is placed into operative position in the lock, and mechanism whereby the simultaneous use of both keys is required to unlock the lock, substantially as described.

6. In a lock, in combination with two or more keys normally stored in the lock, mechanism whereby on its successive use another and different key is fed to the user of the same, and another and different key is placed into operative position in the lock, mechanism whereby the simultaneous operation of both keys is required to unlock the lock, and means for automatically removing the previously-used keys out of operative position, substantially as described.

ICO

'7. In a lock, in combination with two or more keys normally stored in the lock, mechanism for feeding one of the keys to the user of the lock and for placing another one of the keys into operative position in the lock; mech anism whereby the simultaneous operation of both these keys is required to unlock the look; a slot for the reception of the key fed to the user, and means for preventing the removal of the key from the slot, after the motion to unlock the lock has once been commenced, for the purpose specified.

S. In a lock, the combination with a lock-