US715934A - Lock and latch. - Google Patents

Description

Patented Dec. "5,1902.v

J c. ALMAN. LOOK AND-LATCH.

(Application filed Feb. 19, 1902 2 Sheets-Sheet L (No Model.)

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No. 715,934. Patented [100.16, I902. J. C. ALMAN.

LOCK AND LATCH. (Application filed Feb. 19, 1902 (No Model.) 2 Sheets-Sheet 2.

mu lllll Wb'znessesx UNITED STATES; PATENT OFFICE.

JOHN G. ALMAN, OF GIBSONTON, PENNSYLVANIA, ASSIGNOR OF ONE-HALF TO JOHN S. RODGERS, OF O HARLEROI, PENNSYLVANIA.

LOCK AND LATCH.

SPECIFICATION forming part of Letters Patent No. 715,934, dated December 16, 1902.

Application filed February 19, 1902. Serial No. 94,763- (No model.)

To all whom it may concern: trally located at 14 as to front end wall of Be itknown thatl, JOHN C. ALMAN,acitizen casing, adapted to slide in the casing in any of the United States, residing at Gibsonton, suitable manner. In the present instance it in the county of Westmoreland and State of moves in recesses 12 and 12, found in the Pennsylvania, have invented a new and use-' side plates, and between guide and jar posts ful Improvement in Locks and Latches, of 11", 11, and 11, formed integral with the lockwhich improvement the following is a specicase.

fication. Numeral 16 designates the bosses formed My invention relates to improvements in on the case 10 to lessen friction on the part [0 looks. of the gravity-lever.

The object of my improvement is to make Numeral 18 designates the face-plate. Said the gravity-lever as light in weight as practiface-plate is provided with a hook projection cable, to afford powerful facilities for operat- 18 perforated or recessed in the center, proing the contrivances, to combine them withviding a receptacle for the point 17 of the :5 in a customary extent of space, and renderprojection 17 of the case 10, the said point ing of the look more difficult to pick than it being adapted to fit in the said receptacle to ordinarily is. prevent lateral movement of either part The advantagesof my invention are to be thereto. 17 is a projection on the other forobserved in the absence of springs, which freward corner of the case 10, provided with a 20 quently get out of order, the use of draw-bar face adapted to bear upon the face-plate.

in connecting the latching and unlatching The said projection is provided with an elonmechanism and fitting of the face-plate to gated perforation, rendering the same more the case, the durability, compactness, easy easily fitted. The said described construcworking, security, and general adaptability tion of the fitting of the face-plate to the case 25 to the wants of the trade by using any of the is intended to reduce laborin accomplishing elements-claimed for the specific want in the the same. It is contemplated to use either use of looks. I attain these objects by the construction at either forward corner of the mechanism illustrated in the accompanying case 10 or vice versa. The latch-bolt 20 is drawings, in which provided with the usual beveled and reduced 0 Figure 1 is a plan View of the look and rear portion, moving between guide and jar 8o latch with cover removed, showing position plates 11 11, and 11 and is also found on and arrangement of the contrivances units upper and lower edge with recesses 22 for latched and unlocked; Fig. 2, when latched engagement withthe gravity-operating lever and locked. Fig. 3 is an inverted view of hereinafter described. These recessesin the 5 the gravity-lever. Fig. 4: is a view of the upper and lower edges of the latch render it draw-bar. Fig. 5 is a view of the key. Fig. reversible, as is well known in the art. 6 is a cross-section taken on lines 6 6 of Numeral 3O designates the operating cam Fig. 2; Fig. 7, stationary disk and washer; or tumbler, mounted on the usual knob-spin- Fig. 8, slotted cup on side plate of case. Fig. die 34. This cam consists of a collar 31 and 40 9 is aview of the ring supporting the lockingspecially-constructed arms32 and 33. These tumblers. Fig. ,10 is a modified view of the arms or wipers are adapted for engagement gravity-lever. with tappets 41 and 42 of the draw-bar 40 and The arrangement and combination in the are provided with faces of such contour that accompanying drawings is illustrated by the either one in bearing upon its tappet engages 45 following references and explanations. the same on the part near the hub and when Numeral 10 designates the lock-case, which fullyexerted the engagement-point is brought may be of any desired shape or style for rim in line at right angles to pulling-line through or mortise use, provided with guide and jar the center of the knob-spindle. posts 11 and 11 and shoulder 11. Numeral 4.0 designates the draw-bar con- 5o Numeral 2O designates the latch-bolt, cen-- necting the latches with the unlatching mech- 10o anism. The draw -bar in the present instance is connected by a yoke to the arms 32 and 33 of the operating cam 30 with the shoulder 51 of the gravity-lever 50. The said draw-bar is provided with the opening 43 in the rear part thereof and an oblong opening 44 in the front part, encircling the sleeve 57 of the eye of the gravity-lever. It will be seen that the opening 43 provides a seat for the operating-cam 30 and economizes space thereby, and the oblong opening 44 permits horizontal action of the draw-bar. The upper edge 46 rides on the said eye-wall 57 of the gravity-lever and keeps the wrist 45 in line of action. The slanting shoulders 41 and 42 form the tappets, adapted to receive the action of the arms 32 and 33 of the cam 30. The said draw-bar is also provided with a reinforced wrist or lug 45, adapted to engage the shoulder 51 of the gravity-lever 50. The said wrist is reinforced by increasing the minor-axis thereof in the rear of the engaging point. On fulcrum 15 in the upper forward part of the casing is pivoted the gravity-lever 50, as is frequently done in the art. This gravity-lever has its side walls cut away or recessed at 54 for the reception of the draw-bar 40 and key-operated locking-lever 60, hereinafter described. The recess 54, provided on the gravity-lever 50, it will be seen, provides the seat for the drawbar and locking-lever, thereby economizing space, since no greater thickness is required than would be required for the usual thickness of the gravity-lever. In the lower edge of the upper forward part of the gravity-lever is formed the shoulder 51, adapted to be engaged by the lug 45 of the draw-bar. The shoulder, it will be observed, is inclined in any degree or contour in order that the lug may be guided toward the fulcrum-pivot. It will also be observed that a segment of the circle of the forward part of the gravity-lever is out inwardly at 52 in order that the same will not engage the lever and push the said lug downwardly on the shoulder 51 and prod uce unnecessary friction thereby as the gravitylever is elevated. The gravity-lever is also provided with a concavity 53 in the middle front thereof, permitting the back travel of the latch-bolt, and an integral latch-operatingarm 59, which projects upwardly from the lower part thereof and engages with a recess 22 in the lower edge of the sliding latch. The projection 58 at the upper part of the gravitylever is of soft material and strikes the upper edge of the case and eases the jar thereof.

Numeral 50 in the modified drawings, Fig. 10, is an additional minor weight-piece to major part of the gravity-lever, attached to the upper rear end of the said gravity-lever 50, thereby affording greater power from the same weight of material. The attachment of the said piece 50 is pivotal in order that the same may operate in a vertical position. It is understood that the use of this piece is optional in a certain class of locks. This expediency will be resorted to in deriving sufficient power to operate the latch-bolt and knob-spindle.

Located within the cups 15 and 15, formed on the side plates of the case and to each side of the disk 63 of the locking-lever 60, are a series of stationary ward-plates or tumblers. Each tumbler is provided with a projection or projections 1 and l", which are adapted to fit within suitable slots 15 15, formed in the cups 15 and 15, whereby such tumblers or ward-plates are held from turning. These plates or tumblers are provided with suitable slots corresponding to the bits in the key. Between the tumblers or plates are placed suitable washers or separate plates 2. The key is.such--for instance, as shown in Fig. 5- that when inserted in the keyhole it is adapted to turn freely past the ward-plates when used; but the slot formed in the disk 63 of the lock and lever 60 is so shaped as to be engaged by the operating-key, whereby the disk and the locking-lever are turned with such key. It will be observed that the said disk is provided with a flange 63, projecting on the said cups and coacting therewith to keep the disk in proper position. Flange 63 is recessed at 63", on both sides of the upper and lower part of the same, to receive the projections 7 and 7 of the encircling rings 4. Fig. 10 shows a modified view of the said disk arrangement, being within the said cups. The lockinglever 60 when turned into locking position engages by its end with a shoulder 56, formed in the gravity-lever, thoroughly preventing the operation of the said gravity-lever in retracting the bolt. When the locking-lever is not in its locking position, it may rest on projection 13 on thelock-case, as shown. The gravity-lever is provided with bosses 50 and 50 to reduce lateral friction with the side plates of the case.

Numeral 4 in Fig. 9 is one of two oppositely-faced rings encircling each cup of the side plate of the case, or one may be used, if desired. The said rings are provided each with two inward ly-directed lugs or tumblers 5 and 6 and two lugs 7 and 7 projected at right angles to the ring-surfaces, each lug being formed integral to its ring. The said projecting lug 7 is adapted to fall into the recesses 63 of the disk, preventing the same from being revolved and disengaging the locking-lever. The inwardly-directed lugs are located in the upper and lower slots 15 15 of the plate of the case. The upper lugs 6 are adapted to receive the shoulders 8 8 of the bit of the key, whereby the said lugs are elevated, thereby raising the lugs 7 up out of the recesses 63 of the disk, preventing the same from being revolved in unlocking the lock and freeing the same.

The lower inwardly-projecting lugs 5 of the rings 4 are adapted to receive the curved point 8 of the key-bit to force the said rings 4 downward in case they do not fall of their own weight, thereby giving the same a posi- I IO tive movement by this specially-formed key. Changes ofkeys may be made by lengthening the shoulders 8 8 of the key-bit and correspondingly shortening the lugs 5 and 6 of the rings 4. 7 represents additional guards to the disk movement, as when the rings are unduly elevated they look the same. When no disks such as shown by numerals l and 2 are used in the cups, then the key-bit would.

not be incised, as indicated. It is contemplated to use the said locking device with a separate locking-bolt when the usual two .bolts are used and use rings with one lug 7,

if desired.

The operation of the device is effected by the gravity-lever 50 taking its lower position and resting on the jar-posts 11, thereby protruding the latch bolt 20 forward in the keeper of the door-jamb. When itisdesired to disengage the latch-bolt from the said keeper, the knob-spindle is caused to bring the arms of the operating-cam to bear on the shoulders of the draw-bar, thereby causing thelug on the draw-bar to engage the shoulder 51 of the gravity-lever 50, whereby the gravity-1e ver is elevated and retracts the latch bolt. In looking the said device the key-operating lever is revolved on the slottedcups 15 and 15 and thrown forward and brought intoengagement with the shoulder 56 of the-gravity-lever, thereby locking the same. It will be observed in thd operation the shoulders 8. of the keybit elevate tumblers 6, thereby causing 7 to free itself from the recess 63 of the disk 60. In withdrawing the key the curve 8 of the key-bit bears on theupwardlyprojecting lug 5 of the ring 4, thereby positively drawing the counterpart lug 7 into the recesses 63 of the upper part ot' the diskflange, thereby avoiding the failure of operation. the ward-disks when used in the cups, while one bit engages the disk of the locking-lever in revolving the same for engagement with the shoulder of the gravity-lever.

From the foregoing construction of my invention it will be apparentto those skilledin the art without further description, and it will be understood that various changes and modifications in the size, the proportion, and minor details of construction may be made without departing from or sacrificing any advantages herein described in my invention.

What I claim as my invention, and desire to secure by Letters Patent, is

1. In a lock, the combination of a latch-bolt actuated at the under edge by the projecting,

arm of the gravity-lever, a gravity-lever pivoted in the upper forward corner of the casing, a draw-bar connecting the said gravity-lever with the operating-cam mounted on the knob-spindle, a key-bit, a key-operated stop-lever, mounted on the projections integral with the casing. and adapted to engage the gravity-lever, thereby locking the same, a key-operated ring or rings encircling the adapted to engagethe shoulders of the flange of the disk of the said stop-lever, substantially as set forth and described.

2. In a lock, the combination, of the casing, operatingcam, gravity-lever, latch bolt, and draw-bar, the said draw-bar connecting the operating-cam of the knob-spindle with the shoulder-catch in the upper forward part of the gravity-lever. I

3. In a lock, the combination with a case, a gravity --lever pivoted thereto in the upper forward part, a draw-bar connected to the said gravity-lever and to the arms of the operating-cam, the operating-cam being mounted in the knob-spindle in the case and the latch-bolt actuated by the said gravity-lever substantially as set forth and described.

4. In a lock, the combination with the case, a gravity-lever pivoted thereto in the upper forward part, a latch-bolt, actuated by said gravity-lever, a draw-bar connecting the said gravity-lever with the arms of the operatingcam, the said draw-bar being provided with a reinforced wrist adapted to engage the gravity-lever and an operating-cam mounted on the knob-spindle as described and set forth.

- 5. In a lock, the combination of the case, a gravity-lever pivoted thereto, in the upper forward end thereof, the said gravity-lever having a segment of the are under the eye on the said pivot, cut inwardly, a draw-bar connecting said gravity-lever with the operatingcam, an operating-cam mounted on the knobspindle and a latch-bolt actuated by said gravity-lever, substantially as described. The bits of the key freely turnpast 6. In a lock, the combination of the case, a

ity-lever being provided "with an inclined shoulder 51, a draw-bar connecting said gravity-lever with the said shoulder, an operatingcam mounted on the knob-spindle and the latch-bolt substantially as described.

7. In a lock, the combination with the case, the gravity-lever pivoted in the upper forward corner thereof, a draw-bar provided with :1. lug 4:5 and shoulders 41 and 42 connecting the said gravity-lever with the operating-cam, the said gravity-lever being provided with a depression in the periphery end of thefeye on the pivot 15 at 52 and a slanting shoulder 51, an operating-cam mounted on the knobspindle and a latch-bolt actuated by the arm of the said gravity-lever, substantially as described.

8. In a lock, the combination with the case, the gravity-lever pivoted in the upward forward corner of thesaid case, said gravitylever being provided with a concavity in the front part thereof, an actuating-arm engaging the lower edge of the bolt, a draw-bar connecting said gravity-lever with the oper- &

ating-cam, an operating-cam mounted on the knob-spindle, and a sliding latch-bolt, substantially as described.

9. In a lock, the combination of a case provided with integrally-slotted cups on each side plate thereof, a locking-lever mounted on said cups, stationary ward-disks contained in said cups, spacing-washers between said ward-disks, a sliding latch, a gravity-latchoperating lever pivoted on the upward forward corner of the casing engaging the latchbolt, an operating-cam mounted in the knobspindle and a draw-bar connecting the said lever and cam, substantially as described.

10. In a lock, the combination with a gravity-lever pivoted in the upward forward corner thereof and actuating the latch-bolt, said gravity-lever being provided with bosses or projections, a draw-bar connecting said gravity-lever with the operating-cam, an operating-cam mounted on the knob-spindle and seated in the case, a latch-bolt, substantially as described.

11. In a lock, in combination with the easing, a gravity-lever pivoted in the upper corner thereof, means for operating the same, a latch bolt, a key operated locking lever mounted on the said slotted cups of the side plates of the case, the disk end of the said lever being recessed and provided with a flange'coacting with said cups, substantially as described.

12. In a lock, in combination with the easing, the said casing being provided with a cup formed integral therewith, a ring encircling said cup, said ring being provided with inwardly-projecting tumblers or lugs, a key-bit provided with shoulders adapted to operate the same, and a projecting lug coacting in recess of the flange with the disk of the keyoperated lever, substantially as described and set forth.

13. In a lock, in combination with the easing, the said casing being provided with en ps formed integral therewith and supporting the flange-disk of the key-operated lever coacting thereon, two rings encircling the said cups, the said rings being provided with inwardly-directed tumblers or lugs located in the slots of said cups, and outwardly-projecting lugs interacting in the recesses of the said flange of the lever-disk by means of the shoulders of the key-bit engaging the upper lugs of the said rings and the body of the key-bit engaging the shoulder of the disk of the said locking-lever, substantially as described.

14. In a lock, the combination of the easing, the said casing being provided with projections formed integral therewith and supporting the locking contrivance, two rings encircling the said projections of the casing, each one of the said rings being provided with an inwardly-directed post and a projection at right angles to the face of each of the said rings adapted to interact in the recesses of the disk of the key-operated locking-lever, and a beveled key-bit adapted to bear on either one of the said posts, substantially as described.

15. In a lock in combination with a casing, the said casing being provided with cups formed integral with the side plates, a keyoperated flanged disk provided with a locking-lever, coacting therewith, substantially as set forth and described.

16. In a lock, the combination with a sliding latch-bolt, the casing, an operating-cam mounted on the knob-spindle, a draw-bar connecting the operating-cam with the shoulder-catch of the gravity-lever and a gravitylever, the said gravity-lever being in two parts, one part being attached to the upper rear end of the other part and a key-operated locking-lever for locking the gravity-lever, as set forth.

In testimony whereof I have hereunto signed my name in the presence of two subscribing witnesses.

JOHN O. ALMAN.

In presence of A. M. WINNETT, H. O. DALY.

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