US2159940A - Door lock - Google Patents

Description

May 23,1939. I Wl A END-[ER 2,159,940

Doon LOCK original Filed July 24, 1951. 2 sheds-sheet 1 I l-ll;

A` r-- ,III

lPatented May 23, 1939 UNITED STATES PATENT OFFICE 2,159,940 v DooRLoox Waldemar AJ Endter, Long Beach, Calif.

13 Claims.

I'his is a substitute of my abandoned application on Door lock, Serial Number 552,812, filed July 24, 1931.

This invention relates to an improved door lock, and particularly to a novel means of mounting a rotary latching element so that said element is retractable in thelock.

An object of my invention is to provide a novel door lock of the rotary latching element type which rotary element is effectively held against rotation and so engages the rotary element as to hold the same tightly in the strike plate and thus holds the door against its stop.

Another object is to provide a novel means whereby alock of the character stated is held tgaliinst accidental o r forcible retraction of the A further object is to provide a novel wedge construction for a rotary type of lock in which the wedges act against each other and against the lock case to prevent forcible retraction of the locking element.

Still another object is to provide a novel rotary locking element in a door lock which will prevent vertical movement of the door.

A feature of my invention resides in the novel multiple wedge construction whereby the rotary locking element is moved and held into proper locking position, and also is urged against the strike plate in such a manner as to hold the door tightly against the stop.

Other objects, advantages, and features of invention may appear from the accompanying drawings, the subjoined detailed description, and the appendedv claims.

In the drawings:

Figure 1 is a longitudinal, sectional view of my lock, the high wedge block which engages the rotor being cut away. This section is taken on line l-l of Figure 2.

Figure 2 is a sectional View taken on line il--i of Figure l.

Figure 3 is an end view of my lock with the nish plate broken away to show the lock construction back of-the same.

Figure i is an end view taken from the rear of the two wedges.

Figure 5 is a side elevation oi the two wedges, one being shown in advance of the other.

Figure 6 is a longitudinal, sectional View or" a slightly modified iorm of lock, the section being similar to Figure l.

Figure 7 is an end vie-wof the same.

Figure 8 is an isometric view of the rotor yelse.

Figure 9 is a fragmentary, transverse, sectional view of still another modied form of lock.

Figure lil is a fragmentary, sectional view taken on line lt-lii of Figure 9.

Figure ll is a fragmentary, transverse, sectional view of the door with my lock mounted therein, and the sill showing the method of operation of the rotary locking member.

Figure 12 is a top plan view of a modied type of rotary locking member. Figure 13 is a side elevation of the same.

Figure 14 is a side elevation of the strike plate used in lconnection with the rotary element shown in Figures`12 and 13.

Referring more particularly to the drawings, the

.numeral I indicates a lock case, and in this case I mount a U-shaped yoke 2 which is slidable horizontally in the case. 'Ihe yoke 2- slides -in recesses or groove-ways '3-3 which are formed in the lock case. A pair of pins 3*-3 extend from the yoke 2 and project into slots in the case l A rotary locking element 4 is mounted on the forward end of the yoke 2 upon a pin or pins 5.

Within the lock case I, and back of the rotary locking element 4, I provide a plurality of wedge blocks 6 7. These wedge blocks engage the case l at the top and bottom thereof and are slldable in the case by a means to be further de` scribed. The blocks are each formed with tapered legs 8 9 respectively, the leg il being cut on a lesser taper than the leg 3. A roller il! is also provided at the forward edge ofthe block t -and l, there being a hole in each of the blocks to receive the pin, and a head i3 is formed on the outer end of the pin so that the wedge blocks cannot slide forwardly and entirely escape said pin. From the Wedge blocks the pin extends rearwardly thru the yoke 2 and is attached to a retracting member lit which is slidaloly mounted in the case i. The method `of actuating the retracting element lit is usual and well known in the art, and the detailed construction of this.

retracting means forms no part of this invention.

A spring l5 bears against the element ligand against a stationary wall it thus urging the retracting element constantlyl in an outward din rection. A spring il surrounds the pin l2 and extends from a wall i3 of the lock case to the yoke 2 and thus urges this yoke outwardly so as to move the locking element l into proper locking position.' Suitable stops are provided `ier the yoke 2 so. as to prevent the yoke from being pushed entirely out of the case.

A pair oi springs is--i bear against the wedge members 5*? respectively to urge said wedges towards the locking element l and thus engage and hold the locking member in the following manner: When the door is closed, as shown in Figure 11, the locking member 4 will engage the outer curved end ,of the strike plate 2|. The yoke 2 will be moved inwardly into the case and against the tension of the spring I1. This inward movement of the yoke causes the same to engage a collar 22 on the pin I2, thus moving the pin inwardly and retracting the wedge members 6-1. As the locking member 4 rotates one'of the wings I I will engage the forward edges of the wedges 6-1 and move them inwardly against the tension of the springs I9-20. The wedges are slidable on the pin I2 as previously described, and consequently will move very readily.

When the rotary locking element 4 has reached the locking position in the strike plate, asishown in solid lines in Figure 11, the wedges 6-1 will be pushed under one of the wings Il gradually rotating the locking member until the door is tightly held against the stop 23. Naturally the wedge having the lesser taper will first move forwardly under one of the wings of the member 4 and then as the wing is rotated, the wedge with the greater taper will enter and cause the locking element to be more tightly pressed against the strike plate. Thus it will be seen that the two different tapers on the wedge blocks will serve to more effectively and completely rotate the locking element into position, and a material saving in the length of the lock is thus provided because the bearing surface is transferred from one moving member to another, the final position of the wing engaged by the wedge blocks being above the wedge block having the lesser taper, as shown in Figure 1. As previously stated, the roller I0 guides the wing I I on to the wedge block 1 with a minimum of friction, or the possibility of blocking the forward movement of said wedge block.

The adjacent and engaging surfaces of the wedge blocks 6-1 are cut at an angle as shown at 24 in Figure 4. The purpose of this arrangement is to cause a spreading apart of the wedge blocks if one of themis moved downwardly by the forcible rotation of the locking member 4 such as would occur if the door were forced. This spreading of the wedge blocks causes them to press tightly against the lock case and will offer a resistance to further retraction of the wedge blocks. Consequently they are held in locking position and the rotary locking element cannot be moved to force the door. However, when the door is opened by means of the usual handle or knob, the pin I2 pulls the wedge blocks rearwardly and the locking element is then free to rotate.

In Figures 6 and 7 the same general arrangement is shown as in Figures 1 to 5 inclusive, namely, the lock case 25, the winged or bladed rotary locking element 26 which is mounted upon a yoke 21, and a plurality of wedge blocks 28 which are slidably mounted in the lock case 25. A pin 29 extends rearwardly from the wedge blocks to an unlocking strap 30 which strap is retracted by the usual and well known means actuated by the handle or knob.

A coil spring 3I bears against the rear face of the strap 30 to urge the same forwardly, and the wedges are each urged forwardly by means of springs 32.l In this instance, the lock case 25 is circular in form rather than rectangular, and the locking element 26 is slightly modified in shape in order to conform to the circular case as shown in Figure 7. The wedges 28 are slidable on the pin 29 in the same manner as previously described for the structures shown in Figures 1 to 5 inclusive.

In Figures 8 to 10 inclusive, an arrangement is shown whereby the wedges are quickly retracted and are -moved by means of a lever action so as to provide a greater throw for the wedges. A yoke 33 is slidably mounted in the case 34. The bladed rotary locking element 35 is mounted on a pin 36 which is journaled in the yoke 33 and in t e forward end of the same. In Figure 10 the rotary locking element is removed in order to more clearly show the wedges. A plurality of wedges 31 are mounted on a shaft 38, which shaft extends into slots 39 in the side of the yoke 33. These slots permit horizontal movement of the shaft in order to retract the wedges.

A link 40 extends from the shaft 38 to a second link 4I, the latter link being pivoted either to the yoke 33 adjacent the top thereof or to the lock case. A retracting pin 42 is pivotally attached to the link 4I and extends rearwardly to the retracting plate 43. The retracting plate 43 is moved back and forth by means of a handle or knob in a usual and well known manner. This plate 43 is limited in its movement by contacting a stationary yoke 44.

A spring 45 bears against the plate 43 to urge the same forwardly, also a spring 46 bears against the yoke 33 to urge the same forwardly.

It will be evident that when the pin 42 is retracted by the plate 43, that the wedges 31 will be quickly moved rearwardly away from the locking element 35 by reason of the levers or links 40-4 I.

As previously stated, the rotary locking element when engaging the strike plate, and when held by the wedges, will hold the door snugly against its stop. To prevent vertical movement of a door, I have provided a rotor or locking element as shown in Figures 12 and 13. The rotary locking element 41 is provided with a plurality of spiral or inclined blades 48. These blades iit into inclined grooves 49 in the strike plate 50. It will be evident that when the inclined or spiral blades are fitted in the grooves 49, that the door will be held against vertical movement. The modified locking element and keeper described in this paragraph form the subject matter 0f my Patent N o. 1,902,547, issued March 21, 1933.

Having described my invention, I claim:

1. An improved door lock comprising a lock case, a yoke slidably mounted in said case, a rotary locking element journaled in the yoke, a plurality of blades on the rotary locking element, a plurality of wedges slidably mounted in the lock case, and means to retract said wedges, spring means bearing against said yoke, and spring means bearing against said wedges.

2. An improved door lo'ck comprising a lock case, a yoke slidably mounted in said case, a rotary locking element journaled in the yoke, a plurality of blades on the rotary locking element, a plurality of wedges slidably mounted in the lock case, and means to retract said wedges, spring4 means bearing against said yoke, and spring means bearing against said wedges, each of said wedges having differently inclined wedge surfaces thereon.

3. An improved door lock comprising a lock case, `a rotary locking element positioned adjacent one end of said case, blades on said rotary locking element, said blades protruding from the case, a pair of wedge blocks slidably mounted in the case, a tapered wedge surface on one of the blocks, the other block having a tapered wedge surface of greater inclination than the rst named block, spring means bearing against each of said blocks, and means to retract said blocks.

4.An improved door lock comprising a lock case, a rotary locking element positioned adjacent one end `of said'case, blades on said rotary locking element, said blades protruding from the case, a pair of wedge blocks slidably mounted in the case, a tapered wedge surface on one of the blocks, the other block having a tapered Wedge surface of greater inclination than the rst named block,'sprin'g means bearing against each of said blocks, means to retract said blocks, the abutting surfaces of said wedges being formed at an angle whereby said wedges are urged apart when said wedges are forcibly urged inwardly by pressure exerted on said locking element.

5. An improved door lock comprising a lock case, a yoke slidably mounted in said case, a rotary locking element journaled in the yoke, a plurality of blades on the rotary locking element, a pair of wedges slidably mounted in said case, means to retract said wedges, a spring bearing against each of the wedges to urge the same outwardly, a spring bearing against said yoke to urge the same outwardly, a tapered surface on one of said wedge blocks, the second wedge block having a tapered surface of lesser inclination than the rst. i

6. An improved door lock comprising a lock case, a yoke slidably mounted in said case, a rotary locking element journaled in the yoke, a plurality of blades on the rotary locking element, a pair of wedges slidably mounted in said case, means to retract said wedges, a lspring bearing against each of the wedges to urge the same outwardly, a spring bearing against said yoke to urge the same outwardly, a tapered'surface on one. of said wedge blocks, the second wedge block having a tapered surface of lesser inclination than the first, the abutting'surfaces of said wedges being .formed at an angle whereby said wedges are urged apart when said wedges are forcibly'urged inwardly by pressure exerted on said locking element.

'7. An improved door lock comprising a `lock case, a yoke slidably mounted in saidcase, a rol tary locking element journaled in said yoke, a plurality of blades on the locking element, a pair of wedge blocks slidably mounted in the case, a retracting pin engaging both of said Wedges, means to retract said pin whereby said wedges are moved inwardly, said wedges having inclined surfaces thereon adapted to engage the blades of the locking element, one of said wedge surfaces being greater than the other, spring means engaging said yoke to urge the yoke outwardly, the

contacting, face of said wedge blocks being formed on an angle whereby the wedge blocks are forcedy apart and against the lock case when pressure is exerted on the locking element.

8. An improved doorlock comprising a lock case, a yoke slidably mounted in said case, a rotary locking element journaled in the yoke, a plurality of blades on the rotary locking element, a plurality of wedges slidably mounted in the lock case, and means to retract said-wedges, spring means bearing against said yoke, and spring means bearing against said wedges, each of said wedges having differently inclined wedge surfaces thereon, and a roller journaled on the forward end of said wedge blocks, said roller being adapted to'contact the rotary locking element as said wedge blocks move outwardly.

9. An .improved door lock comprising a lock case, a yokeV slidably mounted in said case, a rotary locking element journaled in said yoke, a

plurality of outwardly extending blades on said A locking element, a wedge block adapted to engage the rotary locking element whereby said locking element is held against rotation, a shaft on which said wedge block is mounted, a link attached to said shaft, means pivotally mounting said link in the lock case, a retracting pin, said pin being pivotally attached to said link, means to retract said pin whereby the link is swung and the wedge block is retracted, a spring engaging said wedge block to urge the same outwardly, and a spring engaging the yoke to urge the yoke outwardly.

l0. An improved door lock comprising a lock case, a yoke slidably mounted in said case, a ro tary locking element journaled in the yoke adjacent the outer end thereof, a plurality of blades extending from the rotary locking element, a wedge block adapted to engage one of the blades tc hold the locking element against rotation, a shaft extending thru the wedge block, a link attached to the shaft, a second llink pivotally attac-hed to the 'first named link, means pivotally mounting the last named link in -the case, a retracting pin, said pin being pivotally attached to second link, means to retract said pin whereby said links are .swung and the wedge block is retracted, a spring engaging said wedge block to urge the same outwardly, and a spring engaging the yoke to urge the yoke outwardly.

11. An improved door lock comprising a lock case, a yoke slidably mounted in said case, a rotary lock element journaled in the yoke, a plurality of blades on the rotary locking element, wedge slidably mounted in the lock oase and bearing against said case, an inclined wedge surface on the wedge, said wedge surface being adapted to engage one of the 'blades of the rotary loc-king element, means to retract said wedge, spring means bearing against the yoke and spring means bearing against said wedge.

12. An improved door lock comprising a lock case, a yoke slidably mounted in said case, a rotary locking element journaled in the yoke, a plu-k rality of blades on the rotary locking element,

the case and engagetation, and means to retract said dogging means,

a spring means bearing against the yoke, a spring means bearing against said dogging means, said dogging means bearing against the yoke.

WALDEMAR A. ENDTER.

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