US634365A - Combined door latch and lock. - Google Patents

Description

Patented Oct. 3, i899.

N0. 634,365. E. E. NELSON.

EOMBINED DOOR LATCH AND LOCK.

(Application led May 27, 1899.)

2 Sheets-Shee L (No Model.)

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Patented Oct. 3, |899.

E. E.NELSON.

COMBINED DOOR LATCH AND LUCK.

. (Application filed May 27, 1899.)

No Model.)

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UNITED STATES PATENT OFFICE.

EDWARD EVERETT NELSON, OF FILLMORE, ILLINOIS, ASSIGNOR OF ONE- HALF TO GEORGE W. PERKINS AND NED B. ALLEN, OF SAME PLACE.

COMBINED DooR LATCH AND LOCK.

SPECIFICATION forming part'of Letters Patent No. 634,365, dated October 3, 1899. Application tiled May 27, 1899. Serial No. 718,551. I)(No model.)

vDoor Latch and Lock, of which the following is a full, clear, and exact description.

The object of this invention is to provide a novel, simple, and inexpensive combined door latch and lock which is devoid of springsis reliable in service, and which affords means for the locking of both the latch-bolt and lock-bolt at the same time, thus affording double security in a very effective manner.

The invention consists in the novel con-v struction and combination of parts, as is hereinafter described, and defined in the claims.

Reference is to be had to the accompanying drawings, forming a part of this specification, in Which similar characters of reference indicate corresponding parts in'all the figures.

Figure l is a side view of the lock-case with a side plate thereof removed7 exposing the Working parts, which are adj usted to lock the latch-bolt against retraction and hold the locking-bolt proper in unlocked condition. Fig. 2 is a view of the lock-case similar to that shown in Fig. l, the details of the latch and lock being shown adj ustedto release the latch-bolt, which is represented in retracted adjustment. Fig. 3 is a side view of the lockcase with one side removed7 exposing the working parts of the latch and lock, that are both shown in locked condition. Fig. 4 is a transverse sectional view substantially on the angular line 4 4 in Fig. l. Fig. is a longitudinal sectional view of the lock substantially on the line 5 5 in Fig. 3. Fig. 6 is a perspectiveyiew of the locking slide-bolt, and Fig. 7 is a perspective view of a novel tiimblei;bar that is a detail of the lock.

In the drawings that represent an embodiment of my invention, S indicates the case wherein are held the operative details of the lock and latch in proper relative positions. The caseis rectangular and recessed, as usual inboxl form, to adapt it to. contain the working parts, to be presently described, and on the open side ofthe case is held by screws inserted at the corners the cover-plate 8a,

that serves to complete said case when it is secured in place.

The latch-bolt 9 is held to slide longitudinally in the case S through an opening in one end Wall of the latter by its loose engagement between the spaced studs a, that project from the fixed side wall of the case near the rear end of the latch-bolt, the latching end of said latch-bolt being loosely retained in place by 6o contact with the sides of the aperture in the end wall of the case.

Above the slidable latch-bolt 9 a two-part pusher-bar is supported in the case S and, as shown, comprises a T-block l0 and a rocking 65 bar Il, the T-block consisting of three members b b b2, which are arranged substantially in T form. The member o, which is uppermost, is pivoted upon the :fixed side wall of the case S by a pivot bolt or stud o, and be- 7c low this member in the same upright plane the member b/ is downwardly projected, While the remaining member b2 is laterally extended from the' members Z) Z9' intermediate of their ends and away from the end Wall of the case, through which the latch-bolt 9 is adapted to slide.

The depending limb b' of the T-block l0 is slotted upwardly from its free lower edge at right angles, and laterally-projecting pins d 8o on the sides of the latchbolt 9 have loose engagement with said slot, the latch-bolt being loosely embraced by the two spaced members formed by another slot in the limb b. (See dotted lines in Figs. l, 2, and 3.)

The rocking bar ll is slotted vertically and longitudinally in the end portion that is to connect with the limb b2 of the T-block lO, and said lilnb Z22 is preferably reduced inthickness Where it is inserted within the slot 9o in the bar 1l. A transverse slot c is also formed in the end portion of the rocking bar 1l, and a pin e', which projects from the part of the limb b2 that occupies the vertical slot in the bar l1 passes loosely through the slot 95 e, which affords a rockable and slidable joint between the T-block l0 and the end of the rocking bar 1l. y

The end of the rocking bar 1l opposite from its slotted extremity is pivoted upon the roo fixed wall of the case 8, as at f, and intermediate of said ends on the top of the rocking bar agravity-block g isiormed or secured. On the T-block 10 at the upper corner between the limbs b and b2 a weight-block 71, is located, which adds to the heft ot` the T-block, and serves to quickly and reliably depress the limb b2 of the T-block when said limb is elevated above a horizontal position.

The usual knob-shank or spindle 12 isV provided for the actuation of the latclrbolt 9 through the medium of the parts 10 11, and said shank extends through the case S at each side, as indicated in Fig. 4, for the reception of knobs or equivalent means for turning the shank. A trip-finger 13 is secured on the shank 12, and the latter being positioned below the rocking bar 11 permits the end of the trip-finger to engage With the lower edge of said bar and raise it, when the shank is rotatably moved in the direction of the arrow u'.

The weight of the T-block lO and rocking bar 11, together with the gravity-blocks g and it thereon, normally depresses the bar 1l until it rests upon the hub of the trip-finger 13, and thus depresses the toe of the trip-finger, as shown in Figs. 1 and 3, the bar 11 being supported substantially horizontal.

lVhen the parts l0 11 are in normal adjustment as just described, the sloped end of the latch-bolt 9 is fully projected out of the case S to have. latched engagement with an ordinary hasp-plate, (not showin) and thus retain closed the door on which the lock is secured.

Vhen the shank or spindle 12 is rocked in the direction of the arrow n', the upward inclination of the rocking bar 11 thus effected will correspondingly lift the limb b2 of the T- block 10, as shown in Fig. 2, which will rock the limb b rearwardly and pull the latch-bolt E) inwardly, as clearly represented in said iigure.

The rocking bolt 11 is horizontally supported free to slide endwise through a suitable orifice in the end wall of the case S by the projections i, which are formed on the side wall of the case.

The bolt 14 is elongated and rectangular in eross-section and its body is vertically and longitudinally slotted from the inner end sufficiently to receive the tumbler-bar 15, designed to move freely in said slot. The tumblerbar 15 is pivoted at one end upon the fixed side wall of the case S and upon the cover S, and at the opposite end, which is located near the forward termination of the slot in the bolt 1l, a cross-pin m is projected from said tumbler-bar, which pin may engage in either of two spaced notches n it',

vformed in the upper edge of the locking-bolt.

A weight-block 15 is formed or secured upon the upper edge of the tumbler-bar 15 above the cross-pin m and serves to enforce the depression ot' the tumbler-bar at its free end and cause the cross-pin m to enter either notch n n' above which it may be located.

A scallop o is cut in the lower edges of the parallel members of the locking-bolt, so as to expose-tho body of the tumbler-bar 15 at thc apex of said scallop, and kcyholcs p, formed oppositelyin the side walls of the case 8 near the scallop 0, permit the insertion of a key 16, (shown by dotted lines in Figs. 1, 2, and 3,) so that a rocking movementof said key Will cause the bit of the key to contact with the tumbler-bar and raise it a limited degree.

The notches n a' are so relatively located with regard to the cross-pin m and outer end of the locking-bolt 14; that said pin will fall into the outermost notch n when the key 1G has been manipulated, so as to lift the tum bler-bar 15 and at the same time draw the bolt 14 into unlocked adjustment, as represented in Fig. 2, the direction of rotatable movement of the key in this case being indicated by the arrow in Fig. 3.

if the key 16 is moved in the direction of the arrow in Figs. 1 and 2, the tumbler-bar 15 will be rocked upwardly and thus remove the cross-pin m t'rom the notch fit, and immediately after this elevation of the tu mbler-bar the bit of the key will engage with the bolt 14 and push it outwardly, the extent of such sliding movement being just suicient to rclease the key from the locking-bolt'when the pin m is directly above the notch n', into which said pin now drops and thus locks the bolt 14. against retraction until a proper key is employed for the elevation of the tumblerbar 15 and sliding movement of the lockingbolt, as before explained.

Between the latch-bolt i) and the lockingbolt 11 a shackle-bar 17 is held to slide longitudinally, said bar being designed to simultaneously lock the' latchfbolt against retraction and also lock the bolt 14 when it is outwardly projected at the same time the latch bolt is locked. The shackle-bar 17 is of a length suicient to permit one end to project a short distance through an aperture in the end wall ot' the case 8 opposite the end wall through which the bolts 9 and 14: extend, while the opposite end of the shackle-bar is supported to slide adjacent to the bolts it is to hold against retraction, as will now bc explained.

The inner extremity of the shackle-bar is bent downwardly to form a toe q, and near this toe a slot o is formed longitudinally in the body of the bar and transversely thereof. A stud s projects from the fixed side wall of the case S into the slot r and serves to support the inner end portion of the shackle-bar, so that it may be moved endwise, the position ot the stud adapting it to maintain the shackle-bar horizontal when in normal adjustment. Y

In the lower edge of the shackle-bar, near the end which projects through the end wall of the case 8, two spaced notches u u are formed, which are designed to Separately receive the lower defining edge of the aperture in the end wall of the case 8 through which the shackle-bar extends.

The face of the depending toe q of the IIO shackle-bar 17 is nearly in the same horizontal plane with the upper surface of the weightblock lso that an adjustment of the shacklebar toward the weight-blocker in the direction of the arrow e' in Fig. 2 will locate the toe q directly over the weight -block, and when such an adjustment is effected the notch u', that is outermost, will receive the edge of the oase 8, as before mentioned, which engagement will obviously retain the shacklebar against longitudinal movement.

It will be seen that the location of the toe q over the weight-block 15a will prevent the tumbler-bar 15 from receiving upward rocking movement to release the locking-bolt let, so that it will be impossible to retract the bolt 1,4 or project it outwardly by anyinstrument from either side of the lock until the toe q of the shackle-bar is removed from over the weight-block.

On the upper edge of the shackle-bar 17, at a suitable distance from the dependingtoe q, an abutment-flange c is formed, which eX- tends upwardly at the rear of the latch-bolt 9 and may contact therewith.

The notches u u are so spaced apart and the abutment-danger: so relatively positioned that when the shackle-bar 17 is adjusted by sliding it in direction of the arrow 'y to engage the innermost notch u with the edge of the case 8 the abutment-liange o will allow the latch-bolt 9 to be freely operated for its release from a hasp-plate or other keeper. (Not shown.)

In case it is desired to double lock the door having the improved lock on it, the bolt 14 is first thrown outward to engage with a haspplate or other keeper by the use of the key 16, and then the shackle-bar 17 is lifted at its rear end and shifted inwardly in the direction of the arrow z, so as to interlock the notch et' with the edge of the case-wall, which adjustment will secure the latch-bolt and locking-bolt in projected condition and prevent the release of either bolt until the shackle-bar is moved to eect such a release.

The shackle-bar 17 may have a weightbloclc 17 'd formed or secured on its upper edge near the notch u, and if employed will aid in depression of the bar, so as to cause an engagement of either notch u u with the edge of the case-wall, as occasion may require.

It will be noticed that all working parts of the combined latch and lock are very simple and cheap in production and not liable to become inoperative from ordinary wear.

It is a feature of advantage that the operative details of the improved latch and lock are actuated in part by gravity, dispensing with springs, which increases durability and renders the device very reliable in service.

Having thus described my invention, I

claim as new and desire to secure by Letters Iatent- 1. The combination, with a case, of a slidebolt, a slidable locking-bolt, and a shacklebar having two lateral projections and slidably disposed between and parallel with said bolts, said shackle-bar being adapted by adjustment to engage the lateral projections thereon with the latch-bolt and locking-bolt, thereby securing them against retraction.

2. The combination, witha case, of a latchbolt slidable longitudinally thereon, and means to slide said boltfrom withoutthe case', of a locking-bolt operative with a key, and a longitudinally-adjustable shackle-bar, slidable between the latch-bolt and locking-bolt, said bar having spaced notches at its rear end to engage with the wall of the case, and lateral projections above and below thereon, respectively adapted to impinge upon the inner end of the slide-bolt and upper side of the locking-bolt, whereby to lock said bolts projected from the case.

3. The combination with a case, and a longitudinally-slidable latch-bolt therein, of a two-part pusher-bar comprising a weighty T- block loosely engaging the latch-bolt for its sliding movement, and a rocking bar pivoted by one end to the case and jointed upon the -T-block, to receive upward rocking movement, and means to rock the bar and T-block for the retraction of the latch-bolt.

et. ln a device of the character described, the combination with the two-part pusher-bar comprising a three-limbed T-block, pivoted to the lock-case at the upper end of the T- block, and a rocking bar pivoted by one end on the lock-case, the otherl end of said bar having a rocking and sliding connection with a lateral member of the T-block, a slidable latch-bolt, aloose connection between the 'depending member of the T-block and the slidebolt7 and means to liex the two-part pushervbar near its joint, for the actuation of the slide-bolt.

5. In a device of the character described, the combination with a case, and a latch-bolt and a locking-bolt, both slidable in the case, of a shackle-bar held to slide in the case between the latch-bolt and locking-bolt, projections on Ysaid shackle-bar adapted to hold the said bolts against retraction, said bar having spaced notches near one projecting end thereof, which by separate engagement with a part-of the case are adapted to hold the IIO shackle-bar in engagement with the latchbolt and locking-bolt, or retractedtherefrom.

EDWARD EVERETT NELSON.

Iiitnesses:

FRANK HERREN, REUBEN J. WRIGHT.

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