US2656704A

US2656704A - Rotary and sliding bolt lock

Info

Publication number: US2656704A
Application number: US180929A
Authority: US
Inventors: Mancuso Emanuel
Original assignee: Individual
Current assignee: Individual
Priority date: 1950-08-23
Filing date: 1950-08-23
Publication date: 1953-10-27
Anticipated expiration: 1970-10-27

Description

Oct. 27, 1953 E. MANCUSO ROTARY AND SLIDING BOLT LOCK 2 Sheets-Sheet 1 Filed Aug. 25, 1950 J I I ATTORNEV-$ Oct. 27, 1953 E. MANCUSO 2,656,704

ROTARY AND SLIDING BOLT LOCK Filed Aug. 25, 1950 2 Sheets-Sheet 2 L l l I F( r 1 l I i j L J Q i L Z5j l- S i mum/Ton ,MANUEL MANOUSO F/G BY 42% A TTOQNEYS Patented Oct. 27, 1953 UNITED STATES PATENT OFFICE 2 Claims.

Thisinvention relates to a padlock, particularly adaptable for use in connection with a hasp and staple type of'fastening for doors, win-- ,dows, chests and the like. The general object of the invention is ,to provide a :padlock adapted to cooperate witha staple in :such a manner as to protect the staple against tampering. The conventional hasp and staple mechanism for looking a garage door, for example, when sei cured by a conventional padlock, leaves the staple exposed so that it may be readily severed with a hacksaw or cold chisel, thus permitting the release of the hasp without unlocking the padlock. The lock of my invention is designed to enclose the staple and to fit against the hasp so as to prevent access to the staple.

Another object of the invention is to provide such a lock which is of relatively simple and durable, yet sturdy construction, resisting eiforts to unlock it by damaging or destroying its parts. More specifically, the invention contemplates a lock having a locking bolt and a looking tumbler, the bolt being releasable only by rotation of the tumbler.

A further object is to'provide such a loclqhaving a locking bolt which is spring urged toward its release position, so as to spring to the released position automatically when released by rotation of the tumbler, andwhioh has a projecting end adapted to be manually engaged to :return it to its locked position.

.A further object is to provide a lock havinga novel and improved arrangement of rotatable, key-actuated tumbler, a spring urged locking pin adapted to be retracted by rotation of the tumbler, a locking bolt normally held locked by :the locking pin, and a staple receiving recess adapted to substantially completely receive the staple of a staple and hasp combination, the recess being intersected by the looking bolt so that the latter may project through the staple as received in the recess, whereby to secure the lock :to the staple and thereby look the hasp to the staple.

Otherobjects will become apparentin-the en- ;suing specification and appended drawings in ,which:

Fig. 1 is a perspective view-of a lock embodying the invention;

Fig. 2 is a side elevation of thesame, partially in section as indicated by line 2--2 of Fig.3;

Fig. 3 is a rear viewof the same;

Fig. 4 is a sectional view taken on the line 4-4 of Fig. 3;

Fig. 5 is a sectional view taken on the line 5-5 of Fig. 2;

Fig. ,6 is a detail cross sectional view taken on the line 6-6 of'Fig. 5;

Fig. ,7 is a detail sectional view taken on the line 'l'! of Fig. 5;

Fig. 8 is an *elevational view of a lock and hasp assembly embodying a modified form of the invention;

Fig. 9 is a plan view of the same;

Fig. 10 is an end view of the same viewed from thele'ft end of Fig. '9; and

Fig. 1 1 :is a cross sectional view of the same takenon the'line l- -ll of Fig. 8.

As an example ofone form in which the invention maybe embodied, I have shown in Figs. 1-7 inclusive of the drawing, a lock, indicated generally at 1, adapted to secure the staple 8 of a staple and hasp combination. Such a combination'may include the staple B, attached to a door or a door jambby means of a base plate 9 in which its respective ends are secured, and a hasp including a tongue [0 hinged at H to a tab l2 which is adapted to be secured to a door jamb or a door.

Thelock l embodies a housing I4 which may consist in a solid block of tough, resistant ma terial such as manganese steel, having therein a fiat elongated staple receiving recess [5, a lock tumbler barrel or bore I6, a locking bolt bearing bore l1, and a locking pin bearing bore l8, all of which may be machined in the housing block I 4 by boring and routing operations (boring for the bores 16, and I8 and routing for the recess l5).

Recess 15 extends parallel to the longitudinal axis of housing block l4, adjacent one side thereof, and will normally be positioned vertically when the lock is attached to a staple positioned in a normalvertical plane for a door securing arrangement. It is positioned preferably near that end of the housing block which becomes the upper end of the lock in its normal use position, in which case the lock will hang 'from the staple with its center of gravity below the center of the staple. A locking bolt I9 is slidablyrmounted in bore l1, and has a locking endthat normally traverses recess i5 asshown in Fig. 5. The bore is located near the upper extremity of recess '15, so that a space 20 is defined between bolt I 9 and the upper extremity o recess l5, just suflicientlywide to receive the upper arm of staple 8 with slight clearance (just adequate to'allow free sliding movement of bolt [9 beneath said upper arm). Bore H has a closed end,indicated at 2| in Fig. 5, projecting just slightly beyond the outer side of recess l5 so that looking end [9' of bolt 19 may completely traverse the recess. The wall portion 222 of housing block 14 which closes this end of bore I'I prevents access to the locking end 19' of the bolt. The other end of bore ll opens through the other side of housing l4 as indicated in Figs. '1 and 5. This other end of the bore is in the form of a slightly enlarged counterbore ll which defines, with bolt [9, an annular space in which is accommodated a coil spring 23. Coil spring 23 is engaged under compression between a shoulder 24 constituting the bottom of counterbore l1, and an enlarged head 25 on the exposed end of bolt I9. Head 25 is fitted fairly snugly in counterbore ll while bolt I9 is fitted fairly snugly in bore H, the fit in each case having just sufiicient clearance to allow free sliding action of bolt I9.

Bolt 19 has in its intermediate portion an annular groove 26 defined on one side by a square shoulder 21 and on its other side by a frustoconical shoulderzt. Shoulder 2? defines the inner extremity of the locking end portion I9 of bolt l9. It also functions as a detent shoulder against which a locking pin 29 may engage so as to lock the bolt l9 in its locked position as shown, resisting the yielding pressure of coil spring 23 tending to withdraw locking end ii! from recess 283. Looking pin 29 is slidably fitted within bore 3, with just sufficient clearance to allow free sliding movement therein. It is spring urged, by a small coil spring 36 engaged under compression between its outer end and a plug 3! in housing block it, the resilient pressure of spring 33 tending to move locking pin 29 into its locking position received in annular groove 26.

Secured to locking pin 29 is an abutment arm 32, which projects laterally therefrom into turnbler barrel i5. Arm 32, as illustrated in Fig. 6, has a bifurcated end 33 which is received in an annular groove 34 in locking pin 29, with its furcations snugly embracing the reduced neck portion 35 defined in locking pin 29 by groove 34.

The shoulder extremities of pin 29 which define groove 34 snugly embrace the sides of bifurcated portionas, and the latter is welded to the pin !29. Thus the arm is rigidly and securely fas toned to the locking pin.

Tumbler bore ii at one end opens into the rear face of housing block id. At the front of the block it is partially closed by an annular flange which defines, a reduced opening 33 in the front side of housing block A locking tumbler unit which may be of conventional construction, has a casing 39 of sleeve forin, mounted in the forward portion of bore i6 and has a conventional rotatable core portion at, the outer end of which extends into and is rotatably received in reduced opening The non-rotatable casing 39 of the tumbler unit, in which'core portion 4i] is rotatably mounted engages against flange 3! to securely retain the tumbler unit within housing block i i. A retaining screw ii, threaded into a bore '22 in housing i i, engages a lip or lug so proj ecting from one side of tumbler casing 39, to retain the latter against axial shifting in bore 86.

On the inner end of rotatable tumbler core ii! is a circular cam. or eccentric 4-; which bears U against abutment arm 32, pushing the locking pin is downwardly so as to release its upper end from groove 2% when core lb is rotated to an unlocked position, It will be understood in this connection that core incorporates conventional tumblers, and also has a key slot for receiving a key to draw the tumblers from positions in which they engage within casing 39 to lock core member do against rotation, to withdrawn positions in which they allow core ii] to be rotated. These features. which are conventional in any rotatable tumbler core of a tumbler lock, are not shown in the drawings. The position of cam 44 when tumbler core 48 is locked is shown in full lines in Figs. 2 and 5 and in dotted lines in Fig. 3

while the position of cam 44 in the unlocked position of core 4!? is shown in full lines in Fig. 3 and in dotted lines in Fig. 5. Fig. 3 illustrates how the bolt [9 has been withdrawn to the unlocking position by the action of coil spring 23. after the withdrawal of locking pin 29.

Fig. 3 also illustrates how, in the retracted position of bolt I9, the latching pin 45, slidably mounted in a bore 46 in housing I4, is moved into annular groove 26 by the action of a coil spring s": which is engaged, in bore 46, under compression, between the outer end of latch pin and a plug 48 which is press fitted into the counterbore at the other end of bore :26. The inner end of latch pin 45 is slightly bevelled as indicated, to coact with bevelled shoulder 28 of bolt l9, so that when the bolt is thrust inwardly to its locked position of Fig. 5, the pin to will be cammed outwardly to its inactive position shown in Fig. 5. The engagement of latching pin 45 in slot 26 has the primary function of locking the bolt 19 against complete withdrawal from housing l4 when unlocked. Shoulder 21 will engage against pin 5 to establish a positive lock preventing any further withdrawal of bolt i9. Latch pin 45 also functions to exert a camming action against shoulder 23 at the end of retracting movement of bolt :9, which supplements the action of spring 23 and positively moves bolt is to its fully retracted position, thus making certain that the looking end #9 of bolt is is fully withdrawn from recess #6. Bore 55 is an enlarged continuation of bore 42.

The open end or tumbler bore IE2 is closed by a plug ell which is fitted thereinto, the outer face of plug '59 being flush with the face ofhousing it. The plug 45 has a smooth cylindrical peripheral wall press fitted into a cylindrical counterbore at the outer end of bore Iii.

To disassemble the partsof the lock, it is necessary to remove not only the plug 9 but also the plug G8, which may be provided for by drilling through the plugs 48 and Q9 and lifting them out with a suitable tool inserted through the respective drill hole. This is preferable since it obviously provides considerable dilficulty to any efforts to disassemble the lock by an unauthorized person.

In the modified form of the invention shown in Figs. 8, 9, l0 and 11, the lock la is permanently attached to a main locking bolt or bar 5| which is slidably mounted in

cylindrical sleeve bearings

52 and 53 carried by a mounting plate 55. Bearings E2, 53 are preferably formed integrally with plate at by conventional blanking and forming.

operations in which a blank having a pair of tongues projecting from one side thereof is initially shaped, and is then subjected to a forming operation in which the projecting tongues are rolled into the form of the cylindrical sleeve,

Mounting plate 54 is provided

bearings

52, 53. g V with a series of openings through which securing elements 55 and 56 (e. g. bolts) may be inserted, for securing the plate to a door 51 or other 7' member to be locked. Lock 1a maybe attached to main locking bar 51 by welding or brazing as indicated at 58 in Fig. 11. tached to the bolt at its upper end so that it may normally hang in a position depending from the bolt.

,Bar 51 is extended beyond lock To to provide a locking portion 5| adapted to be received in a keeper sleeve 59 on the upper end of aeplate 60. Plate 68 is provided witha series of openings It is preferably at 1 to receive bolts 6| for securing it to a door frame 62 or the like.

Lock la is identical in construction to lock 1 previously decribed, with the exception of its connection to main locking bar 5|, and reference characters corresponding to those of lock 1 are used to designate the corresponding parts thereof. A staple 8a is secured to plate 54 in a position to be received in recess |5 of lock Ia when bar 5| has been projected through keeper sleeve 59 to a limit position determined by engagement of lock 1a against bearing sleeve 53. Any means for securely attaching staple 8a to plate 54 may be employed, as for example, by extending the arms of the staple through registering openings in plate 54 and heading the ends of the arms over as indicated at 52 in Fig. 11. A second staple 63 which functions merely as a means to retain the bar 5| and look in a retracted position (indicated by broken lines in Fig. 8), is secured to plate 54 in a position spaced from staple 8a. Bearing 52 may be arranged to form a stop for engagement with lock la to determine the proper position of the latter for reception of staple 63 in recess l5.

It will now be apparent that look Ia may be utilized as a handle to manipulate main locking bar 5| in sliding it in

bearings

52, 53, between its retracted and locked positions respectively. In doing so, lock la is simply raised, bar 5| pivoting in

bearings

52, 53, until it clears staple 8a. or 63, as the case may be, and is then slid to its alternate position until it engages bearing 52 or 53 as the case may be and may then be simply dropped onto the other staple. When receiving staple Set, it may be locked thereto by manipulation of the locking mechanism in the same manner as described for the lock 1. Thus, bar 5| is secured against retraction from keeper 59 and accordingly the door 51 or the like is locked in its closed position.

It will be noted that the two securing elements 56 are shown as being concealed behind lock unit In when the latter is in the locked position. This is a preferable arrangement to prevent access to these bolts, thereby increasing the security of the locking function.

It will be apparent from the foregoing that the invention may also be embodied in an arrangement in which the lock 1 of Fig. 1 is permanently attached to hasp member In instead of being separated therefrom. In all other respects, this embodiment of the invention may be identical to that shown in Fig. 1.

Iclaim:

1. In a locking assembly: a mounting plate adapted to be attached to a member to be locked and having a pair of spaced, integral, axially aligned bearing loops; a bolt slidable in said bearing loops and having one end adapted to be projected into a keeper; a lock housing integrally united to said bolt between said bearing loops, and engageable alternately with said bearing loops to define projected and retracted positions of said bolt respectively, said lock housing having in its rear side a recess facing said mounting plate; and a staple rigidly attached to said mounting plate in a position to be received in said recess when said lock housing engages a bearing loop in the projected position of said bolt; a locking pin slidable in said lock housing from a position extending through said staple while the latter is in said recess, to a position releasing the lock housing for swinging movement around the axis of said bolt, whereby the lock housing may 6 be detached from the staple; and locking mechanism in said lock housing for locking said locking pin in engagement with said staple.

2. In a lock for securing a fastener of a type including a staple having a portion adapted to project for engagement by the lock, said lock comprising: a housing having a recess of dimensions corresponding to those of the projecting portion of the staple but slightly larger than the same so as to freely receive the projecting portion of the staple, said housing having a bolt slide bore disposed at right angles to the plane of said recess and intersecting the same, said bore being closed at one end and at its other end having a counterbore opening through the side of the housing, said housing having a locking pin bore disposed at right angles to said bolt slide bore, and having a locking tumbler bore intersected by said locking pin bore; a locking bolt slidably mounted in said bolt slide bore, having a locking end adapted, in a locked position thereof, to traverse said recess and to thereby extend through the staple received in the recess, so as to secure the lock to the staple, the opposite end of said bolt being adapted in an unlocked position of said bolt in which said locking end is withdrawn from said recess, to be projected through the open end of said bolt slide bore so as to be engageable for pushing the bolt back to the locked position, said bolt having, at said locking end, a locking shoulder, having, adjacent said opposite end an intermediate annular groove and having, between said annular groove and said opposite end, a head fitted within said counterbore, a coil spring encircling said bolt and engaged under compression between said head and the bottom of said counterbore for projecting the bolt to said unlocked position when the bolt is released for unlocking movement; a locking pin slidably mounted in said locking pin bore, having a locking end adapted to be projected into said annular groove to engage said locking shoulder to retain the bolt in its locking position, and having an abutment member projecting into said tumbler bore; means yieldingly engaged against the other end of said locking pin and a confining portion of said housing to urge said locking pin toward its locking position in which said looking end engages in said annular groove; a key operated rotatable locking tumbler within said tumbler bore, and a cam on said tumbler engageable with the side of said abutment member opposite said last mentioned yielding means so as to be operable when said tumbler is rotated, to

move said locking pin against the resistance of said last mentioned yielding means, to an unlocking position releasing said bolt for retraction to the unlocking position of said bolt.

EMANUEL MANCUSO.

UNITED STATES PATENTS Number Name Date 708,892 Long Sept. 9, 1902 1,081,808 Borsky Dec. 1 6, 1913 1,446,760 Miller Feb. 27, 1923 1,783,905 Copell Dec. 12, 1930 1,976,274 Yanusko Oct. 19, 1934 2,104,981 Falk Jan. 11, 1938 2,108,145 'Short Feb. 15, 1938 FOREIGN PATENTS Number Country Date 417,571 Italy Jan. 22, 1947