US47817A - Improvement in locks - Google Patents

Description

PATENT OFFICE.

WILLiAM HALL, or Baookmnn, MASSACHUSETTS.

IMPROVEMENT |N Looks.

Spccilicai ion forming part of Letters Patent No. 41,8 l 7, dated Mayfi, le'.

Too/ZZ whom, t may concern:

Be it known that I, WM. HALL, 'ot' Brookline, in the countyof Norfolk and State of Massachusetts, have invented an Improvement in Locks,'of which the following is a specilication.

The nature of my invention consists in certain improvcmentsin registerlocks, to this-et'- i'eot, tirst, by securing the hub to the case of the lock by nieans of a right and left hand screw; second, guarding against pressing the stump against the cog wheels; third, holding the bolt in position while the cog-wheels are being set; fourth, adjusting the lock to the door by means of the hollow.adjusting-screws.

To enable others'skilled in the art to make and use my invention, I will proceed to describe it, reference being had to the accompanying drawings and to the letters ot' reference marked thereon.

Similar letters refer to similar parts.

a b c d in Drawings Nos. 1 and 2 rep'resentcase of lock; B, bolt; S and S', stump divided into two parts. The partSis attached to theboltB 'by the screw Oland swin gs freelyon the screw. That part of the stump designated S" is atcached to the plate s. (Shown on drawings 5 and 6.) Plate s is confined by means of the screw Within the groove made for that purpose in the bolt in Such a manner as to admit -ofa slight sliding motion inthe direction of the length of the bolt-B. By thisdevice it will be seen that the bolt B may be pushed back a short distance, while the part S' of the stump may remain stationary, thus causing the part S ofthe stump to swing up, carrying with it the dog D into the notch ef. The object of this arrangement is to prevent the operator upon the lock from feeling the openings X in the wheels W- lV W, Drawings 2 and 5 all operation which is performed .by getting a slight pressure on the bolt to push it back. Then turnin g the knob K slowly, any motion of the bolt B indicates that the opening X of some one of the wheels W WW has probably come intoposition. By this'arrangement any such Vpressure upon the bolt B will have the tendency to slide the part S against the part S., thus raisingit up and bringing the dog D (permanently attached to S) into the notch e j', Drawings 2, 5, and 6, thus eii'ectually preventing any further mo tion of the bolt B.

W W W in all the drawings, except 3 and 4, are cog-wheels with openings X,into which n the stump S S may slide when the wheels are all brought into position.

rw w w 'in all the drawings, except 4, are

cog-wheels, which may be revolved by means of the knob K. o

lf in Drawings 3 and 4 is adiskvpermanently attached to the spindle of the knob K.

P in Drawings Sand 4 isa pin in the disk G.

P P P" are pins in the cog.wheels ww u. The four pins-wiz., l P Bl P-.I -are so placed l`that no one of the wheelsww w or the disk G can make a complete revolution without bringing the pin of some wheel in contact with the pin of another. Thus, if we revolve the knob K (which turns the disk (lr) the pin Pot the disk G will come in contact with the pin P and will cause the first wheel to revolve. The pin P', coming in contact with the piu P of the second wheel, will cause that to'revolve.

The same operation continued willrca'use the third wheel to revolve.v f

The set of cog-wheels XV W W may 'be thrown out of gear from the wheels w w w by means of the key T.

The key T serves a double purpose4-viz.,that I of throwing the cog-wheels out of gear by aeting upon the vibrating plate V, Drawings No.

5 and 6, which hinges upon the screw Z, Draw- 1n gs No. 5 and 6, and upon which the cog-\vl1'eels are hung, and at the same time raising the lever L up into the notch c, Drawings 5 and 6, of the bolt B, for the purpose of holding the bolt immovable while the wheels w w w are out of gear and are being set by the register.

K in Dra-wings'l and 4 is a disk fixed to the knob K, with edge graduated by means of small black lines into ifty 'equal parts.l These divisional l-ines are numbered.

B. iu Drawings l. andl 4 is a disk xed per-- manently to the lock. This disk has but one mark, r, uponit.

To illustrate the use of thispart of the lock, I will proceed to describe the method of ad; justing the cog-wheels w w w and of using the lock in actual practice. To adjust the wheels fw 'w w (first premising it to be unlocked) by means of a key, I turn the key T, throwing up latch L, fastening the bolt `B in position, and throwing the cog-wheels W W W out of gear, .thus leaving the cog-wheels 'w fw fw and the knob K,which is indirectly attached to` them, free to revolve. I then turn the knob ar y t I 47,817

K to the right until all the wheels w w 1v are revolving together; then set the disk K so that any number on it-, for instance-coincides with the mark r on the disk 1t; then revolve the knob K and disk K vin an opposite direction more than twice, but less than three times, and set any division-#say 45E-4to coincide with the mark r; reverse the mo- -tion again, revolve thekuob and disk until the cog-wheels begin to move, (which will be indicated by the feeling,) but always less than twice, and setA any division-say .5U- to coincide with the mark r. The lock is now set on 5, 45, and 50 ,jf-throw the bolt out by pulling theknob K toward you and turning it to the left; let the knob spring back, and revolve it each way two or three times. To unlock it, I turn therknob to the. right till all three wheels are revolvingr togetherjthen bring division 5 ot' the disk l yto coincide with the mark r; then turn to the left more than twice, but less than three times, and bring division 45 oi disk K tocoin'cide with mark r; reverse the motion again and turn the knob K till the wheels begin -to revolve, but always less than twice; bring division 50 to coincide with mark r; pull the knob K toward you, (which will bring the teethot the cog-wheel M intothe ratchet N, Drawings,) and the-n turn to the right, drawing Athe bolt in.

.l is a bar, hinged at one end to the bolt, the surface of which back toward its free end is held in contact with the disk (r by a spiral spring, I, interposed between the tail ot' the bolt and the bar, the purpose ot' all which is to force the disk l( back into its socket llt so soon as the handlreleases its hold upon the knob.I

M in Drawings 1 and 3 is a small cog-wheel attached to disk Gr and revolving with it. It acts against ratchet N, which is a part of the bolt B. (Shown in Drawing lout oi? gear.)

g g g g in Drawings v1, 3, 5, and 6 are hollow screws for the purpose of adjusting the lock to the iron door. They have slots cut across the end w'ithin the lock to take a screwdriver.

l Hin Drawings 3 and lis the hub; H', ri ght-hand screw cut on the shank of the hub H; H", left-hand screw, upon which the checknut U is screwed. The advantage of this arrangement is that the hub H having been screwed into thc case of the lock, and the check-nut U screwed upon it, the hub cannot be started from the outside.

V V V in Drawings 1 and 3 three brakes, acting upon the cog-wheels w w w, for the purpose ot' holding them steadily in position.

What I claim as my invention, and desire to seeureby Letters Patent, is-

' 1. Fastening the hub by means of the righthand screw H through the case of the lock, and the left-hand screw H, or vice versa, combined with the check-nut U.

Making the stump in two parts, S and S.

3. The peculiar arrangement ot' the lever L and the key T, so that at the time the cog wheels are thrown out of gear the bolt shall be immovable.

4. rlhe hollow adjustiug'screws g g g g,

all of which operate substantially as described, and for the purpose-set forth.

WM. HALL.

Witnesses WILLIAM EDsoN,

tnA A. GAunrNER.

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