US653946A

US653946A - Door-lock.

Info

Publication number: US653946A
Authority: US
Inventors: Thomas Colletti; John Colasanti
Original assignee: Individual
Current assignee: Individual
Priority date: 1900-05-19
Filing date: 1900-05-19
Publication date: 1900-07-17
Anticipated expiration: 1917-07-17

Description

No. 653,946. Patehted July l7, I900.

T. COLLETTI & J. COLASANTI.

noon oan.

(Application filed May 19, 1900.)

(No Model.) 3 Sheets-Sheet IZZ' :l. 1 J j (e Gi (I? 2 1mm i a I ATT EYS m: mums PETERS ca, Puma-Limo. wasnmcrou, n. c.

No. 653,946. Patented July l7, I900. T. GULLETTI & .1. COLASANTI.

000B LOCK.

(Appliution filed m 19, 1900.)

(lo Iodghl, I

" rig/4;

I Vfllfl/l I 1 l l I l X I I l l l l I l l r 4 l I I l I I I I 1 I I l I I l l IIIIIIIIIA III/I (III/IIIIIII.

WITNESSES: A jlmu Km I Mrs NORRIS Firms co. PHora-u'mu. wunmm'on u c No. 653,946. Patented-Jul l7, I900. T. COLLETTI & J. COLASANTI.

DOOR LOCK.

' I [Application filed Kay 19, 1900.) "lo Iodeti) 3 Shank-Sheet 3.

@ m vmrons j g; By 10m @W/TNEssES THE uo ms PE ERS so. nova-Lama. mama-ran, n. c.

UNITED STAT S PATENT OFFICE.

THOMAS COLLETTI AND JOHN OOLASANTI, OF NEW YORK, N, Y.

LOCK.

SPECIFICATION forming part of Letters Patent No. 653,946, dated July 17, 1900.

Application filed May 19, 1900.

To all whom it may concern.-

Be it known that we, THOMAS COLLETTI and JOHN OOLASANTI, citizens of Italy, and residents of the city of New York,borough of Manhattan, and State of New York, have invented certain new and useful Improvements in Door-Locks, of which the following is a specification.

Our invention relates to door-locks of that class provided with sliding bolts; and the objects of the invention are to obtain a lock which cannot be unlocked except bya special operation of the true keyand which is simple, considering the security obtained by the same.

Ourinvention consists of a lock which comprises a case, a fixed guide-stud, an edgewisemovable longitudinally-slotted bolt, guided on said stud and provided with means for interlocking with said stud, a spring acting edgewise on said bolt to insure its interlocking with said stud, and a floating push-piece mounted on the bolt and adapted by the proper operation of the key to shift and release the bolt from the stud and to finally retract the bolt, as will be hereinafter fully described in detail and then specified in the claim.

In the accompanying drawings, Figure 1 is a front elevation of our lock in open position with the face-plate removed. Fig. 2 is an enlarged transverse section on line 2 2, Fig. 1. Figs. 3, 4, and 5 are elevations of the lock, showing the three phases or positions of the look from unlocked to locked position and the corresponding positions of the key; and Figs. 6, 7, and 8 are elevations of the lock, showing the three phases or positions of the look from locked to partially-unlocked position and the corresponding positions of the key, the fourth or unlocked position being clearly shown in Fig. 1. The. tumblers are omitted in Figs. 3 to 8 for clearness.

Similar letters of reference indicate corresponding parts.

Referring to the drawings, A indicates the lock-case, and 13 the strike-plate or keeper with which the bolt 0 of the lock engages. The bolt 0 is preferably reduced at its inner end to form a shank, which is provided with 'posite side of the cut-away f to the shoulder a longitudinal slot 0', one wall of which is Serial No. 17,267. o model.)

provided with a notch or recess 0 at the rear end of the slot.

D indicates a guide-stud on the case A entering the slot 0 and provided at one side with a teat or projection d, which is adapted to take into said notch C in the bolt when the bolt is projected to its fullest extent, as shown in Fig. 5. y

D indicates a fiat spring suitably secured to the case A at one end, as'by solder, and which at its free end bears upon that edge of the bolt which is adjacent to the notch 0 so as to move the bolt 'edgewise and cause the notch to be engaged by saidteat cl when the notch and teat are opposite. slight play edgewise, as is evident from the drawings.

E indicates the tumblers,which are pivoted to the lock-case A at e and are subjected to the action of flat springs E,which are secured to the tumblers and at their free ends bear against the lock-case. Said tumblers E are provided with longitudinal slots 6, on opposite sides of which are recesses 6 in which recesses a side lug e on the bolt is caused to en gage by means of the springs E. There are three recesses e at each side of the slot 6 of each tumbler, corresponding to the three positions of the form of bolt shown. The bolt is preferably provided with a should er or abut mentfat one side of a recess f in the bolt and another shoulder or abutment f at the other side of said recess, with which shoulders or abutments the key F may engage for operating the tumblers and bolt by two turns. The shoulder or abutment f is formed by a cut-awayf at one corner of the rear end of the bolt.

Pivoted to the rear end of the bolt 0 at g is a finger or contact G, which is termed a floating push-piece, for reasons apparent hereinafter. The pivoted end of the push piece G is fiatted at g, so as to afiord a bearing-place for the free end of a flat spring h, which is secured to the bolt, while the free end of the push-piece is formed with a notch Said push-piece G is locatedvon the opor abutment f.

To operate the bolt to lock a door, the key F is inserted into the keyhole and turned in The bolt has a gaged by the lug e the direction of the arrow, Fig. 3, causing the bit of the key to operate the tumblers E in the well-known Way and to engage with the shoulder f of the bolt 0, the key being turned until the bolt is shot half-way and the parts being thereby brought to the position shown in Fig. 4. Right here we desire it fully understood that the position just assumedmay be the normal locking position, as our invention is not limited to the means for obtaining two shifts nor to two shifts of the bolt, as is shown in the drawings. It will be evident that the second shift (now to be described) is unnecessary; but it is preferable for securitys sake. The bolt having been brought to the position shown in Fig. 4, the bit of the key is disengaged from the shoulder f by the continuous turning of the key, the key being turned sufficiently until its bit strikes against the shoulderf, so as to push the bolt out to full-shot position, (shown in Fig. 5,) in which position the teat or projection don the guidestud D is caused to be engaged in the notch C in the bolt through the action of spring D, which exerts a slight pressure on the bolt. In this position the bolt is held positively locked against longitudinal movement by the en gagement of teat d in notch 0 in addition to the locking obtained in the usual manner by the tumblers E, the notches e of which are en- The said lug e successively engages in the notches e in the three positions of the bolt described. It is evident that if the tumblers are operated in the proper way by picking it will be practically impossible to retract the bolt, because of its being positively locked to the case A in the manner stated and because its retraction can be accomplished only through the intervention of the floating push-piece G.

Supposing an attempt is made by a thief or unauthorized person to operate the lock, he

will insert the key in the lock, and, although he may operate the tumblers properly, he cannot retract the bolt, because he mustknow how to connect the key with the bolt to that end. He will simply sweep the key back and forth, as shown by the dotted line, Fig. 5, without reaching the desired end. To retract the bolt, one must know that the key has to be given a slow turn to the left (see the arrow, Fig. 6) until the click caused by the engagement of the notched end of the floating push-piece G is heard, this'being a signal that the key is in proper position to begin with. If the operator cannot hear the click, he can feel that the said push-piece has been snapped into engagement with the key by the spring h. The push-pi ece is by this operation rocked on its pivot g, and the parts assume the position shown in Fig. 6, so that on turning the key back in the direction shown by the arrow in Fig. 7 a thrust is imparted to the bolt through the push-piece and the bolt is released from engagement with the teat d, so that on'continuing to turn the key in the direction indicated the bolt is retracted halfway into the position shown in Fig. 8 and the key is released from the said push-piece, which then assumes the position shown in this latter figure. Afurther turn is given to the key in the direction indicated by the arrow, Fig. 8, until the bit of the key abuts against the shoulder f, the key being turned until the bolt is fully retracted into the position shown in Figs. 1 and 3.

By the combination of the described parts with a tumbler-lock a lock is obtained which is very safe and secure against unlocking except by a person with the true operating-key and who is acquainted with the peculiarities of the lock itself.

Having thus described our invention, what we claim as new, and desire to secure by Letters Patent, is

In a lock, the combination of the case, a fixed guide-stud, an edgewise-movable longitudinally-siotted bolt guided on said stud and provided with means for interlocking with said stud, a spring acting edgewise on said bolt to insure its interlocking with said stud, and a floating push-piece pivoted on the bolt and adapted, by the proper operation of the key, to shift and release the bolt from the stud and to finally retract the bolt, substantially as set forth.

In testimony that we claim the foregoing as our invention we have signed our names in presence of two subscribing Witnesses.

THOMAS OOLLETTI. JOHN COLASANTI.

\Vitnesses:

PAUL GOEPEL, JOSEPH H. NILEs.