US90096A - Improvement in permutatiobpiiocks - Google Patents

Description

Uhr.

WILn-AM. HALL, or BOSTON, MAssAonusETTs.

Letters Patent No. 90,096,1-lctfed lul/[Yay 18, 1869.

IMPROVEMENT IN PnRMuTATIoNim-:cxs

The Schedule 4referred to in these Letters Patent and making part of the same.

l v Y To all whom it may concern: f i

Be it knownthat I, WILLIAM HALL, of Boston, in

` [the `county of Suffolk, and State `of Massachusetts, have r invented .certain new and useful Improvements in the Gonstructionof' Dial-Locks; and Ivdo hereby declare the following to beso full andl exact a description as to enable those skilled iu the art to make and use my invention. y

, As the nature of my invention consists in4 the peculiar arrangement and `construction of parts, it can 'only be understood byerraminatiori'` of the specication `and drawings. f

u l e, Drawings. i l e Figure l is an elevation of the iiout of the lock, showing the dial and knob. I

Figure 2 is an elevation of the back of the lock, the

r plate removed, showing the lock as it appears when i the bolt is thrown out, andthe internal gear so thrown Y e `out of adjustment that the holt cannot be` drawn back e until all the parts are readj usted, whichreadjustment Y i l can only be effected by aperson who has the, key-numbers. i l y -r Figure 3 shows in elevation, as before, the lock Vin adjustment. r

il' Figure 4is a horizontal section, showing the rela-v` tive` pos'ition of the parts. l y

Figure 5 `is au elevation of the lock, showing the dog M, for operating thetumblersO O O", iig. 4.

Figure 6 shows, in elevation, the cam G G, lever O,

l l `and latch D, the wheel L aud dog M being removed.

In the drawings, A representsthe casingof the lockl attached to the door A', gs. `l and 4.

Q, figs.l l and 4,.is" the knob of the lock, to which is e attached the spindle K, fig. 6, and the graduated disk T, iig. 1. V'

Permanently attached to the spindle K is. the cain G G,g. 6, one end of which, G, operates a tuinbler, to send back and forth the bolt B.

As the cam G does not act directly uponn lthe bolt itself, but` upon the lever G, which is pivoted to the bolt, it follows that if the lever C C, as seen in iig. 6, should be elevated, as shown in tig. 2, the cam G it `revolves'would not come inV contact with it, Yand therefore would not move the bolt.

If the end G', of the cam G' G, he swung around, so

` as to come in contact with the lever C, it will raiseY it up, as shown in lig. 5.

\ D D' is a latch, hung ,upon a pivot, N, aixedto the casing of the lock. The end Dof this latch passes through a slotorchannel made in the end C" of the Vlever O, so that both latchand lever lnust necessarily move up and down together, yet the level-O is free tu traverse longitudinally when the bolt B slides in or out.

F is a buttress, against which the end C, of the latch f G, restsivhen elevated, as` shown in fig. 2. As the lever U is attached to the holt B, it will be seen that the bolt `can be pushed' back only when the lever is down,` as represented in fig. 3, for if the leverwere up, the

end C" would come in contact with the buttress F, gs. 2 and 5, and thus prevent the. bolt from being sent back.

The wheel L, figs. 2, 3,4, and 5, is attached loosely Y to the spindle K, but has a stud, H', figs. 4 and 5, ex-

tending toward the cam G, and so placed that it will l come in contact with the stud H, in the, cam G G', so

that the cam G cannot make a complete revolution without moving the wheel L.

llhis wheel L has a notch, L', in its periphery, irto which the boss E', of the latch D, may drop, as repj .resented in fig. 3.

I is a spring-brake, bearing on the wheel L.

M, figs. 4 and 5, is a dog, moving freely Varound th spindle K, but being so connected with the wheel L that it alwaysmoves it, though, by loosening the setscrew inM', fig. 5, it `may be adjusted so 'as to bring the projection M' at anyv desired distance from the notch L'. v

This projection M', shown in section in iig. 4, comes in contact with a projection, or pin S, figs. 2 and 3, on the tumbler O, iig. 4, and causes it to revolve.

Each of the turnblers O O' O is provided with a Y projecting pin, which, cominggin contact .with each other, causes the tumblers to revolve.

l? P 1?", iigs. 2 and 4, are notches cut into the tumblers O O O". When these notches are opposite to each other, as represented in. fig. 4, and occupy the positionrepresented by P",'iig`. 3, the projectingplate E, attached to the latch D, may drop into these notches,

as shown iniig. 3, and thus to allow the lever C and latch D to fall, yunless they are also held by the projectiou E', resting ou the rim of the Wheel L, as lshown in 5.

Iigthe notch L', of the wheel L, is in conjunction with the three notches P P. P", and allot them in the position `represented in iig. 3, the projection E', ofthe latch D,`will drop into the notch L', and thus allow both latches to fall, provided the -end G', g. 6, of the' cam G, uncovers the notch L'. y

U, iig. 2, represents spring-brakes, hearing-upon the tumbler-s O O lig. 4. T, iigs. l and`4, is a graduated disk, attached to and revolving with the knob. Q, `the'marks forming the 'divisions being numbered.

'1" is a Vernier plate, having a single mark.

From "the above description, it Will be seen thatthe v bolt in my` lock can only be thrown back when tlr'ejlever G and latch D are down, which can happen onIy when the notches P P' P", of the tumblers O O' O",

'and the notch L', in the wheel L, are all in conjunction, and i'n'the position represented iu fig. 3; and further, when the end G', of the cam G G, is not `in a vertical position.

I The operation and adjustment of my lock areas follows l:

To throw back the bolt, the dog M being in the position shown in fig. 5, the lever C and'latch D raised, and the notches P P P and L out of conjunction, the knob Q is turned to the right, until the pins S S S,

fig. 2, are in contact with each other, causing the tumv blers 0 O O" to move together. When a certain division of the graduated disk, say 8%, comes under the mark on the Vernier plate T', which indicates when the notch P", of the tumbler O, is under the projecting plate E, the knob Q is revolved to the left, until the division stopped at 8?; haspassed the mark on the vernier three times, and another number, say 233, is under the mark; this puts the notch P under the plate E. The knob is now revolved to the right, and this second number(23) is made to pass the verniei mark twice, and until a third division, say 3%, is under the mark on the vernier. The notches P P P" are now in the position shown in fig. 4.'.

' The notch L', in the wheel L, fig. 5, is now brought under the projection E', which is accomplished by turning the knob once more to the left, and causing the last division stopped at (3%) to pass the vernier once, and until another division, 22%, comes under it. Now] all the notches are in conjunction, and by turning the knob again to the right, the end G', of the cam G' G, is moved from under the projection E', thus allowing the lever C and latch D to fall, and take the position shown in iig. 3. A further revolution of the knob causes the end G of the cam to act on the lever C, and through it to move the bolt B.

The dog M M may be set in any desired position.

but such a change necessitates an entire change of numbers. These numbers may be found by inserting a pin, or key, into the small hole in the back of the lock, but not shown in the drawing, opposite the notch P, fig. 3, and turning the knob Q alternately right and left, as above described, until the pin passes into the notches P P P, noting what division ofthe graduated disk is under the mark on the vernier when the pin enters each notch, and the number of times the knob is revolved before the pin enters either notch.

When the notches P P P" are in conjunction, the tumblers O O O are removed, by removing the back plate of the lock, to see when the notch L' is under the projection E', noting at the same time the number of turns of the knob Q, and the division of ,the graduated disk under the vernier, as before.

What l claim as my invention, is-

1.` The combination of the adjustable dog M 'with the wheel L, substantially as described, and for the purpose set forth.

2. The combination ofthe cam G G with the wheel L, sliding lever C G', and latch D D', all operating as described, and for the purpose set forth.

3. The combination of the lever C C with the latch D D', arrangedand `operating substantially as described, and for the purpose set forth.

' WM. HALL.

Witnesses:

A. HUN BERRY, vFRANK G. PARKER.

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