US2059046A - Lock - Google Patents

Description

Oct. 27, 1936. s, S|NGE| ET AL l I 2,059,046

LOCK

Filed June 29, 1934 3 Sheets-Sheet 2 JUL/us hf F21: DMA/vv SAUL Sl/weee y JOSEPH ILVEQMAN l NVE HTOBS y fm mana ATTOQNEY.

Oct. 27, 11936. s. SWGER Em 2,059,046

LOCK

Filed June 29, 1954 I s sheets-sheet` s ,I Nvarrrolzg @fra/f Patented Oct. 27, 1936 LOCK Saul Singer, Joseph Silverman, and JuliusH. Friedman, ssining l\l. Y.

Application June 29, 1934, Serial No. 132,976

12 claims. (ci. 'iov-14)Y This invention relates to improvements in locks,

. and relates more particularly to a lock having an `improved bolt structure with novel means for actuating same.

One of the principal objects of the present invention, is to provide a lock having positive bolt action and positive locking means therefor in orde-r that the bolt-may be actuated only by employing the proper key therefor.

Considerable difiiculty has been experienced in the conventional type of locks which are used in lofts, factories ,and the like, because of a rather common practice amongrburglars whoplan `one of their confederates in the building prior to closing hours, this confederate later opening the door on the inside, thereby letting the other members into the place.

One of the principal objects of the present invention is the pro-vision of an improved lock which, once it is locked from the outside, cannot be opened from the inside, unless the bolt is first retracted by employing a key from the outside, means being provided, however, for inside locking, if same is desired.

A further object of the invention is the provision cfa lock which may be actuated'from the outside by employing a key even though the same has previously been locked on the inside.

In the drawings: 4 Y v MFig., 1 is a vfront elevation of the open casing Aand. of the various elements contained therein, said view showing the position of the bolt structure when same has been partially moved into locking position by actuation of they key from the outside.

Fig. 2 isa broken elevation `similartolig. 1, which shows the position of various of the elements when the Vbolt is in a fully extended position by actuation from the inside.

Fig. 3 is a front elevation showing the position of the parts when the bolt is in aiully retracted position. -v

Fig. 4 is a transverse verticalv section taken on line 4 4 of Fig. 3. i

Fig. 5 is a broken section taken on line 5--5 of Fig. 3.

Fig. 6 is a front elevationof the main bolt.

Fig. '7 is a bottom elevationthereof.`

Fig. 8 is a front elevation of the locking slide.

Fig. 9 is an end view thereof.

'- Fig.. l0 is'a top plan View of the locking latch. Fig.'11 isa'si'de elevation of'one ofthe auxiliary bolt members.

' Fig. 12 Yisa rear elevation, partially in section,

of `the preferred form of pin tumbler locking mechanism.

Referring now to the drawings more in detail,

`the embodiment includes a substantially rectangular `hollow casing `l whichmay or may not 5 have a removable cover as desired. One end of said casing is provided with a plurality of substantiallylrectangular apertures I-l through which the'several bolts pass. This end portion, which isindicated at |l2is shown in the drawings to be 10 uconvex,` and is provided with a bevelled face I3,

although it may be made flat and. Vstraight if As heretofore stated, the present invention is directed particularly to a novel bolt mechanism l5 which is adapted to be `actuated Vby a suitable pin tumbler Vor other key operated mechanism. No

"claim is made herein to any particular type of such mechanism, inasmuch as any one of a number of pin tumbler locks can be provided, thezg() essential feature, however, of such a lock being Vthat the barrel or rotatable member, when actuated, revolves one complete revolution, and that the barrel, when actuated to move the bolt to the locking position, may not be revolved to unlock the bolt Without the use of the key. In the drawirugs,V this mechanism is shown aslincluding an 'outer casing I4, carrying arotatable barrel structure l5 cornposedofV two semi-cylindrical portions, and akey aperture I6.

The outer barrelgo I4 'is suitably secured to the inner surface l1 of pointed as .at 5 and. normally residing in the key aperture as shown in Fig. l2. The tumblers are, Aof course, of varying lengths and-are engaged by short pins 6 which are urged downwardly by y40 means of coil compression springs l positioned 4within a housing I4' integrally formed with the casing. vWhen thev proper key is inserted in the lock the upper terminalsl ofthe respective tumblers are 'raised to an elevation where they are 45 `hush with the upper surface of the barrel which permits the barrel to be rotated. When the ro- `tatableSbarrelstructure l5 is revolved by actuation of a key, a circular cam platerl, which is aiiixed to the rear end thereof, is also revolved. A single cam arm I9, integral therewith, actuates the bolt;

As` previously stated, the lock is of a type which ,permits one complete revolution of the barrel.

whenthe boltis in a retracted position the cam arm is either at the top or the bottom, as the case may be, and the pin 6 in the lowered position shown in Fig. 12, thereby locking the barrel against rotation. When it is desired to move the bolt into locking position the barrel is given one complete revolution by means of the key and the cam arm thereby assumes its original position and thepin 6 drops down, again se'- 'curing the barrel against rotation without the aid of the key. In other words, the member which the cam arm is adapted to actuate may not be moved without the use of a key.

The main bolt, which is indicated by the reference numeral 20, is provided on its inner surface with a ridged portion 2| which moves in a longitudinal guiding slot 22 in the inner surface of the casing. This main bolt is illustrated in detail in Figs. 6 and '1, and includes an elongated inner end portion 23 having a dovetailed slot 24 on its outer face extending the greater portion of its length.

The opposite end 25 of the bolt 20 is substantially rectangular and constitutes the main bolting portion, the terminal 26 thereof having a convex and bevelled surface coinciding with the bevelled surface of the end portion I3 of the casing.

The central portion 21 of the main bolt is substantially triangular in shape, and carries on its outer surface a triangular plate 28 which is secured thereto by screws 29. Between the triangular portion 21 and the removable plate 28, a guide slot 30 is formed on each of the diagonal faces of said portion. An auxiliary bolt 32 is slidably carried in each one of said slots, each of said bolts having a reduced portion 33 and outwardly extending flanged portions 34 at its inner end, said ilanged portions being engaged by the slot 30. When the main bolt is in its fully retracted position, the auxiliary bolts lie adjacent to the inner end of the slots, and as the main bolt is moved outwardly, the inner end portions of the auxiliary bolts move outwardly in their slots. The outer end portion 32 of the auxiliary bolts are also shaped to coincide with the surface I3.

The following means are provided for actuating the main bolt from the inside of the door. A rack member 35 is secured to the upper surface of the inner end portion 23 of the main bolt, said rack member being engaged by the teeth 36 of a pinion 31 which is provided with a thumb turn (not shown) on the outside of the casing. A locking slide or supplemental locking element 40 having on its inner face a male dovetailed portion 4I is slideably carried on the main bolt as shown in Fig. 4.

The lower surface of this locking slide is provided with a pair of spaced recesses 42 having diagonal side walls 43, said side walls being engaged by the cam portion I9 on the circular cam plate I8. The locking slide 40, although slideably carried on the inner end portion 23 of the main bolt, is nevertheless out of engagement therewith when the main bolt is in its fully retracted position as shown in Fig. 3. When, however, the look is actuated by the key, the locking slide becomes engaged with the main bolt in the following manner. A locking latch bar 45 is pivotally mounted on the upper surface of the locking slide at 46 in a bracket 41. This locking latch bar, a detailed top plan view of which is shown in Fig. 10, is provided with an inwardly ollset portion 48 at its outer or free end, this offset portion having a downwardly extending dog portion 49 which engages a square milled notch 50 at one end of the rack member 35.

The outer or free terminal of the locking latch bar is bevelled as shown at 5I, this portion engaging a bevelled pawl 52 secured to the end wall of the casing. The outer or free end of the locking latch bar 45 is urged downwardly by means of a coil spring 53 which resides at its lower eno. in an aperture 54 in the locking slide and engages at its upper end an extension portion 55 of the locking latch bar.

When the main bolt 20 is in its fully retracted position as shown in Fig. 3, the locking slide 40 is likewise in a fully retracted position, and the locking latch bar 45 is elevated by virtue of its outer end engagement with the bevelled pawl 52. In this position, the locking slide, although carried by the main bolt, is, nevertheless, out of engagement therewith, and when the bolt is actuated from the inside of the dwelling by means of the thumb turn heretofore mentioned, the main bolt moves outwardly independently of said locking slide. When, however, the lock is actuated from the outside by means of the key, the initial movement of the cam arm I9 against the slot in the locking slide causes the locking latch vbar to move downwardly and the dog portion 49 falls into the square milled notch 50, thereby causing both members to move in unison. When in its fully extended position, the lock bolt cannot be actuated from the inside because the cam portion I9, which is secured against rotation, prevents the locking slide from moving.

It will be noted that the inner end of the rack 35 is formed with a bevelled portion as at 51. Thus, when the main bolt has been moved into locking position from the inside of the dwelling by means of the thumb turn and it is desired to retract the bolt from the outside by means of the key, the cam plate is revolved to cause the slide 40 to move outwardly. As the portion 49 on the latch bar 45 engages the inner end of the rack it is caused to ride upwardly over the bevelled portion 51 and thence drop into the notch 50. In the event that it is desired to make the lock incapable of actuation from the outside after being locked from the inside, the inner end of the rack may be straight rather than bevelled, thereby preventing the portion 49 on the latch bar from entering the square notch 5U unless the latch bar has rst been elevated by means of engagement with the panel 52.

What we claim is:

1. In a lock of the class described, the combination of a casing, a longitudinally movable bolt having a rack portion on one longitudinal edge thereof, a pinion engaging said rack portion and a thumb turn operatively connected with said pinion, a locking element slideably carried on but normally unconnected with said bolt, said locking element having a plurality of spaced recesses along one longitudinal edge thereof, a key actuated cam having a single cam portion adapted to engage one of said recesses at one time, and releasable means for locking said locking element into engagement with the bolt to cause the bolt to move therewith when said locking element is actuated by the cam.

2. In a lock of the class described, a casing, a longitudinally movable bolt structure positioned within said casing, a rack portion on one longitudinal edge of said'bolt structure, a pinion engaging said rack portion, a thumb turn operatively connected with said pinion, a pair of diagonally disposed auxiliary bolt portions slideably carried by said bolt structure, a longitudinally movable locking element slideably carried by but movable independently of said bolt structure, key actuated means for moving said locking element, and releasable means for securing said locking element in engagement with said bolt structure to move in unison therewith when said locking element is moved.

3. In a lock of the class described, the combination of a casing, a longitudinally movable bolt structure positioned Within said casing, a rack portion on one longitudinal edge of said bolt structure, a pinion engaging said rack portion, a thumb turn positioned outside the casing and being operatively engaged with said pinion, said bolt structure having a pair of diagonally disposed slots adjacent to the bolt portion thereof, a pair of auxiliary bolt members slidably carried in said slots and adapted to move out of said casing at an angle to the movement of said bolt structure, a locking element slidably carried by but independently movable of said bolt structure, a locking dog pivotally carried by said locking element and engageable with said bolt structure to cause said locking element and said bolt structure to move in unison, said locking element having a pair of spaced slots along one longitudinal edge thereof, a rotatable cam having a single cam portion engageable with the side portions of one of said slots at one time, and adapted to move said locking element longitudinally, and a key actuated element secured to and adapted to actuate said cam.

4. In a lock. the combination of a longitudinally moveable bolt, thumb turn means for actuating said bolt, a supplemental locking element slidably carried on but normally unconnected with said bolt, key actuated means for moving said supplemental locking element, and means for interlocking said bolt and said supplemental locking element When the latter is actuated by the key.

5. In a lock, the combination of a main bolt, a supplemental locking element carried by but normally unconnected with said main bolt, thumb turn means for actuating the main bolt independently of the locking element, key actuated means for moving the locking element and means for interlocking said bolt and said locking element when the latter is actuated by the key.

6. In a lock, the combination of a longitudinally moveable bolt, means disposed on one side thereof for actuating said bolt, a supplemental locking element slidably carried on but normally unconnected with said bolt, key operated means for actuating said supplemental locking element, and means for interlocking said bolt and said supplemental locking element when the latter is actuated.

7. In a lock, the combination of a main bolt, a supplemental locking element carried by but normally unconnected with said main bolt, thumb turn means for actuating the main bolt independently of the locking element, key actuated means for moving the locking element and means for interlocking said bolt and said locking element only when the latter is actuated by the key, said main bolt being provided, adjacent to its outer end, with a pair of opposed, diagonally disposed slideways, supplemental bolts carried in said slideways and being moveable therein when the bolt is moved outwardly.

8. In a lock, the combination of a main bolt, a supplemental locking element carried by but normally unconnected with said main bolt, thumb turn means for actuating the main bolt independently of the locking element, key actuated means for moving the. locking element and means for interlocking said bolt and said locking element only When the latter is actuated by the key, said key actuated means comprising a casing, a barrel positioned within said casing, a cam plate having a cam arm carried by said barrel, the supplemental locking element having cam engaging portions along one edge thereof to receive said cam arm when the barrel is actuated by the key.

9. In a lock, the combination of a casing, a main bolt positioned therein, a supplemental locking element carried by but normally unconnected with said main bolt, means disposed on one side of the casing for actuating the main bolt independently of the locking element, key actuated means on the opposite side of the casing for moving the locking element and means comprising a latch bar for interlocking said bolt and said locking element only when the lattel` is actuated by the key.

10. In a lock, the combination of a main bolt, a supplemental locking element carried by but normally unconnected with said main bolt, thumb turn means for actuating the main bolt independently of the locking element, key actuated means for moving the locking element and means for interlocking said bolt and said locking element when the latter is actuated by the key, said thumb turn means being inoperative when the main bolt has been advanced by the key actuated means.

ll. In a lock, the combination of a main bolt, a. supplemental locking element carried by but normally unconnected with said main bolt, thumb turn means for actuating the main bolt independently of the locking element, key actuated means for moving the locking element and means for interlocking said bolt and said locking element when the latter is actuated by the key, said key actuated means comprising a casing, a barrel positioned Within said casing, a cam plate carried by said barrel, the supplemental locking element having cam engaging means, and means disposed Within the casing for rendering said carn plate inoperative unless actuated by the key.

l2. In a lock, the combination of a casing, a main bolt slidably mounted in said casing, a locking slide carried by said main bolt and being normally unconnected therewith, one edge of' said locking slide having a pair of spaced apart cam engaging portions, thumb turn means for actuating said main bolt, key actuated means for moving the locking slide, means comprising a releasable latch bar for connecting said main bolt to the locking slide when the latter is moved by the key, said key actuated means comprising a casing, a barrel positioned therein, means for rotating the barrel, a cam plate carried at one end of the barrel and a cam arm carried by said cam plate and adapted to engage the cam portions on the locking element and move the same and means disposed within the key actuated means for preventing rotation of the barrel unless actuated by the key.

JOSEPH SILV'ERMAN. SAUL SINGER. JULIUS H. FRIEDMAN.

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