US446789A - Robert l - Google Patents

Description

R. L. REED.

LOCK

(Model.)

No. 446,789. Patented Feb. 17,- 1891.

UNITED STATES PATENT OFFICE.

ROBERT L. REED, OF IVASHINGTON, DISTRICT OF COLUMBIA.

LOCK.

SPECIFICATION forming part of Letters Patent No. 446,789, dated February 17,1891.

Application filed April 24, 1890. Serial No. 349,286. (Model.)

To all whom it may con/cern:

Beit known that I, ROBERT L. REED, a citi-l zen of Washington, in the District of Columbia, have invented certain new and useful Improvements in Case-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 towhich it appertains to make and use the same.

My invention relates to an improvement in locks, and more particularly to such as are adapted for securing case-doors.

Heretofore it has been customary in the construction of case-locks to provide a knob or handle adapted to remain permanently attached to the door and to employ a ratchet mechanism to prevent the knob or handle from being operated and a key for withdrawing said ratchet mechanism to permit the bolts to be withdrawn through the medium of the handle. This construction is open to two objections, viz: Two operatingdevices are necessary to operate it, thus necessitating the use of both hands of the operator, and the knob is left permanently in thel door. The last-mentioned objection is particularly noticeable when the device is employed on the case-doors of museums, where the cases are located close together, as the garments of visitors, especially ladies, are apt to catch into the knobs or handles and thus become torn.

It is the object of my present invention to obviate these objections and to produce a locking device for case-doors which may be operated by a combined knob and key, which latter shall be detachable.

A further object is to so construct a caselock and operating device therefor that the case may be unlocked and a firm engagement of the operating device be had with the door, whereby said door may be pulled open when unlocked without liability of slipping,` or disengagement of the operating` device.

Afurther object is to construct a case-lock in such a manner that when the bolts are thrown the knob and its attached key will be prevented from turning farther, whereby it is retained in aproper position to be withdrawn.

A further object is to so construct the device that the knob and attached key can only be turned s'uciently to withdraw the bolt.

A further object is to construct the device parts are in their normal positions.

in such manner that when the knob and at tached key shallhave been turned sufficiently to Withdraw the bolts the knob will be prevented from withdrawal, whereby the door may be pulled open by it.

A further object is to so construct the device that the knob and attached key cannot be withdrawn when the door is unlocked.

With these objects in View the invention consists in certain novel featuresof construction and combinations and arrangements of parts, as hereinafter set forth, and pointed ont in the claims.

In the accompanying drawings, Figure l is a sectional view of my improved lock, showing its connection to a door.` Fig. 2 is a face view of the rear portion of the device with the cover of the rear plate removed. Figs. 8, 4, and 5 are detached views.

A represents the stile of a door, and B B portions of the casing having recessed plates a for the reception of the free ends of sliding bolts C O, as hereinafter explained, said bolts being maintained in a vert-ical position by means of guides or loops l), secured to the inner face of the door. l

The rear plate D of the lock, which is secured to the -inner face of the door, is provided withau perforation c at its center, from which grooves-CZ d extend in opposite directions to the ends of the plate.

Surrounding the perforation c andprojecting from the front of the plate D is a cylinder D, partially closed at its free end to produce an inwardly-projecting ilange e, having notches e at diametrically-opposite points.

Projecting upwardly from and communieating with the cylinder D is a receptacle D2 for a series of pins ji as presently explained.

Inserted loosely in the cylinder' D is abarrel E, having a liange g at its rear end, adapted to abut against the flange e at the rear end of the cylinder D', and having diametrioallydisposed recesses or notches adapted to align with the notches e of the fiange c when the The front end of the barrel E is provided with a flange or disk F, adapted to rest loosely in a recess in the plate'D, for a purpose which will be explained farther on.

The barrel E is provided with a liat keyslot h, which extends longitudinally through roo it, and communicating with this slot is a series of perli'orations h for the reception of a series ot pins t'. 'lhe pins f are inserted in suitable perforations in the receptacle Dl and correspond in number to the pins L' in the barrel, and located above cach pin .7" is a spring j, which latter are maintained in place by a series of screws or pins fi. The piusffz' are of varying lengths, so that when a key G, having a series of notches in one edge, is inserted in the barrel the pins if will be raised until their upper ends lie llush with the periphery ot' the barrel the lower ends of the upper pins f having been raised until they shall have passed the periphery, whereupon the barrel will be free to be turned by the key.

The pins of each lock will be adapted to be operated by a special key; but in museums and similar places, where a number of cases are employed and it is desired that the superintendent may be enabled to open any case in the building or any case in a particular division, each lock will be so constructed that a master-key may be employed. In order to accomplish this object, one notch in the mas ter-key will be cut deeper than the notches of the other keys, and the pin in the receptacle l)2 corresponding with this notch will be made in two parts, so that when the special key is employed the lower end of one section of the pin will be raised above the periphery of the barrel, and when the mas terkey is employed the lower end of the other section of said pin will be raised above the periphery of the barrel.

Projecting from the flange or disk F, near the periphery thereof and at opposite sides of the key-slot 71, are two pins Il Il, adapted to enter elongated slots i j at or near the inner ends of two links I I. The links I I at their opposite ends are made with llanges or hooks 7c 7c', the flange or hook 7;. projecting in the opposite direction from the hook 7c', and on the under face of the hooked portion of each link a pin t is provided. rl'he inner ends of the bolts C are adapted to enter the recesses in the plates and are recessed and provided with perforations to receive the pins l. Thus it will be seen the pins ll II on the flange or disk 'F are pivotally connected with thebolts C C. A cover C is placed on the plate D and provided with a recess C2 for the accommodation ot the links I I, and recesses m in. for the accommodation ofthe bolts, the walls of the recess C2 maintaining the links in proper position and preventing them from lateral separation.

The key for operating the lock is provided with a handle Ji, the axes of the handle and key being in the same plane, and at the junction of the key proper and the handle two lugs or ears J are provided, the back of the key lying flush with the end of one of said lugs. Assuming now that the lock is in its normal position with the bolts thrown, the key is inserted in the barrel until the ears J shall have entered the recesses e in the flange c at the front end of the barrel. 'lhe inscrtion of the key will raise the pins therein, as above described, and the key is turned, the ears passing behind the flange e at the front end el' the cylinder, so that the ears will bear against said flange, and thus produce a iirni hold for the handle, whereby the doel' may be pulled open without the possibility of the key or attached handle slippine. \Vhen the bar rel is rotated as just described, the links will be moved longitut'linally, and the bolts pivoted thereto will be withdrawn. 'hen the bolts shall have been withdrawn, the two links will lie close together, the hooked end of one link engaging the opposite end of the other link, thus limiting the movement of the bai'- rel and attached parts and preventing the key from being turned farther than is necessary to withdraw the bolts. \\hen the bolts are thrown by turning the key in a. direction reverse to that above explained, the links will not be permitted to entirely pass each other; but they will abut against cach other at their inner ends, and thus prevent the barrel from rotatingfarther than to permit the bolts to be thrown and the ears J to come in line with. the recesses in the flange of the cylinder D', at which point the key may be withdrawn. This is accomplished by making the distance between the pins on the disk F less than the combined distance from the slots in the inner ends of both links to the inner ends of both links. Thus it willbc seen that t-hc key cannot be turned farther than is necessary to withdraw the bolt; that when the key is in such position it will have a lirm hold, whereby the door may be pulled open by pulling upon the handle of the key; that in throwing the bolts the key cannot be turned beyond the point at which it should be withdrawn, and that the key cannot be withdrawn when the door is unlocked.

llaving fully described my invention, what I claim as new, and desire to secure by Letters Patent, is-

l. In a lock, the combination, with a bolt or bolts and devices for locking same, of a combined key and knob rigidly connected together and provided with a projection for removablyholding the key in the lock, the said projection being arranged in such relation to the wards of the key and tothe opening in the lock-case for the key as to prevent the withdrawal of the key without throwing the bolt or bolts to a locked position, substantially as set forth.

In a lock, the combination, with a cylinder having a recessed tlangc at one end and a barrel in said cylinder, a flange on one end of said barrel having` recesses to align with the recesses of the tlangc of the cylinder, ot a combined handle and key having,r ears to enter said recesses and pass behind the flange ot the cylinder, substantially as set forth.

3. In a lock, the combination, with a cylinder, of a barrel in said cylinder having sock- IOO IIO

ets, pins in said sockets, a receptacle having perforations adapted to register with the socket in the barrel, pins in the perforations of the receptacle, springs bearing on said pins, links pivotally connected to the barrel, and bolts pivotally connected to the links, substantially as set forth.

4. In a look, the Combination, with a disk, means for actuating same, and 0lugs projecting outwardly from said disks, of links loosely mounted on the lugs, the said links having shoulders adapted to engage and limit the rotation of the disk in one W.direction and with flat sides which engage and limit rotation of the disk in the opposite direction, and bolt-s secured to and actuated by said links, substantially as set forth.

5. In a look, the combination, with a disk, of links having a sliding pivotal connection with the disk and the bolts connected With the free ends of the links, the said links overlapping eaeh other and having engaging Snrfaees for limiting the rotat-ion of the disk in both directions, substantially as set forth.

6. A combined key and knob rigidly connected together and provided with a proj eotion for removably holding the key in the lock, substantially as set forth.

7. In a look, the combination, with a barrel, of pins on one end thereof, links having elongated slots adapted to receive said pins, pins at or n ear the opposite ends of said links, and bolts having perforations to receive said lastinentioned pins, substantially as set forth.

In testimony whereof I have signed this speeieation in the presence of two subscribing Witnesses.

ROBERT L. REED.

Witnesses:

JAeKsoN YATEs, THnoDoRE A. T..JUDD.

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