US2658375A - Lock means for door control mechanism - Google Patents

Description

Nov. 10, 1953 i E. L. ALLEN ETAL 2,658,375

I LOCK MEANS FOR DOOR CONTROL MECHANISM Original Filed Jan. 21, 1947 I 3 Sheets-Sheet l \NVENTO RS. [kw/Iv .4. AME/V ANGELO ,e (/5 Wm #42040 a. Mwme ATTORNEYS Nov. 10, 1953 I E. L. ALVLEN ET AL 2,558,375

LOCK MEANS FOR DOOR CONTROL MECHANISM Original Filed Jan. 21, 1947 3 Sheets-Sheet 2 FIG. 6

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LOCK MEANS FOR DOOR CONTROL MECHANISM Original Filed Jan. 21, 1947 3 Sheets-Sheet 3 FIG. 5

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I I I I 'I I l I I I I H I II I II I II I II 1 I I: I 72 74 I 71 7a 76 I: I I I 1 II I KL? \I I I II I 9 I II I I A /I I I \L 4/ I I II 1 F G 7 Il 7 I II l/ I] I I I IIIIIIIII III II I II I II I INVENTORS. I I I I I 66 I [aw/M 4. AAA? I I II I I fl/VGEAU 16 d6 1070 I .IT II I k/mema 5. fill/$76? II I I II I Patented Nov. 10, 1953 LOCKJMEANSfFOR DOOR'CONTROL "MECHANISM Original application January 21,1947, .SerialNo. 123,330, now Patent No. 2,587,583, datedMarch ".4, 1952. "Divided. and this application July 6,

UNITED YSTA'TE'S PATENT oFFio-E 1951,Serial'NoI235j404 This invention relates to door control mechanism characterized by means for receiving energy as a function of door closing movement, latching of the doom-or both; storing o'f-such energy while the door remains closed-and latched; and when door opening is de'sired, release ofsuch energy 'for the purpose of 'unlatching the door, urging it openwise, or both.

Such a door controlmechanism is disclosed'in Patent No. 2,094,413 issuedSeptember"2'8, 1937, to Rudolph I. 'Sch'onitzer, whereinappears complementary latch pin and latch plate means mounted respectively on complementary wall and door structures, and, for control ofthe'-mov able member of the complementary-pair, associated detent and trip or actuating means mounted and arranged for operatorresponsive =detenttripping operation.

Said patent also discloses means for preventing,

when desired, tripping 'oractuating of the detent means, by blocking of the mechanism.

Asan improvementover the-control mechanism of said patent, application Serial No.'713 220 filed November 30, 1946, by Edwin L. Allen, and copending herewith, discloses means providing optional prevention of tripping oractuating such detent means, while-permitting neverthelessthe normal operation by the operator of the member by which tripping is otherwise accomplished. In other words, the invention of said'copending application provides means topredetermineth'e tripping: eifectiveness of operation of "the' actuating member; by meanschar-a'cter-izedby idling or .free-wheeling effect, as distinguished from means characterized by the blocking effect "disclosed in said patent; such idling operation eliminatin'g'possibility of damage bytampering and consequently permitting lighter construction.

General objects of: the invention *ofthisapplication are improvements upon'thetype of-structuredisclosed in said copending application, and, briefly, this invention contemplates incorporation of the tripping-efiectiveness-control means with the push button or like actuating member through operation for which trippingmay be effected.

Further objects "and advantages will be apparent from the following description'taken'in conjunction with the accompanying drawings, wherein Figures 1 to 3 illustrateone embodiment of the invention; viz.,

Figure 1 .is a detail in elevationof pertinent parts of a-door structure embodying the invention, parts being broken :away i to show details of construction, the mechanism appearing as at rest 2 withthedoor closedandlatched, Figure "1 also indicating in dot-dashlines certain'partsofthe mechanism as in tripped or door open position.

Figure 2 is a detail of parts appearingxin Figure Land-insectional elevation as'therein, showing 'the'parts'positioned'to 'b'e ineifective for-detent tripping.

Figure 3 is a view similar to Figure 2 but showing thepush button actuatingmember as having been depressed, without tripping effectiveness.

Figures 4 to 7 illustrate amodi'fication of the invention; viz.,

Figure 4 is a sectional elevation with parts broken away to show'details'of construction the parts appearing in "full 'linesas at'rest in door latohedposition and certain parts appearing, by dot-dash lines, as'having hadtrippingactuation.

Figure '5 is a view similar to'Figure 4 but'showing'the-parts positioned toprevent trippingeffectiveness.

FigureG isa'view from the rear of parts appearing in Figure 4 as indicated by line '6-16 therein, the lines 44, Figure 6, .indicatingthe planes of'parts' appearing in section inFigure 4.

Figure 7 is a detailed sectional elevation as indicatedby line l--"I,"Figure 4.

It will be apparent-to one familiar with'thea'rt that while the two 'forms'of the invention herein illustrated aredisclosed as applied to an :automotive body structure and more particularlyito a door'thereof, the invention couldas Well 'beapplied to other-types of structures, and, iffpreferred, to the wall structure'itself to which'the doorstructure is complementary.

With'reference now to the drawings and first to'Figuresl'to 3 thereof, I4 represents generally a hinged door structure; which may be'o'f hollow sheet" metal construction as indicated, at' the free edge 'of wliich is mounted, as on a sub-base 32, secured within the door structure, a'stub shaft 3| carrying on the outside a bifurcated latch member I 2, of which the latch and throwoutarms I-Oand II are integral partsythe'element 3'5"beingsecured to'the stub-shaft 3| on theinside, for oscillatory movementwith the latch member I 2 between the latched or operative position of the latter indicated in full lines and the released or Operated position thereof indicated in dotdash. lines (Figure l) Spring means i '40 is arranged to yieldably .urge these 'parts' counterclockwise,Figure 1, from door latched or operative toward door unlatchedcor operated position.

Mounted on the stud'pin-iiin' theplane of the element '3 5, is a detent "54 having a shoulder 56 cooperative with a shoulder on the element to latch the latter, and consequently the latch member I 2, in the door latched or operative position indicated in full lines in Figure 1.

A lever A is pivotally mounted at B on the subbase 32 and has its motion limited as by the rivet C and cooperative slot illustrated, the lever A being provided with a shoulder, cooperative at D with a suitable projection on the detent 54, the lever A being movable to the position indicated in dot-dash lines in Figure 1 to move the detent 54 to eifectively release the bifurcated member l2 to the action of the spring to unlatch the door and urge it openwise; the bifurcated latch member I2, here shown as on the door, cooperating with a keeper pin I8 fixed on the wall structure to which the door is complementary.

A member 190d may be provided if desired for secondary control of the detent 54 so that the detent may have tripping operation from either the lever A by an operator outside th wall structure or from the member 198d operable from the inside of the wall structure.

What has thus far been described is generally similar both in structure and function to what has been fully disclosed in the above identified patent and copending application, and it is therefore sufiicient to here state the arrangement to be such that as the door is closed the latch member l2 (and therefore the door as Well) will be secured by the detent 54, and the lever A will be in its full line position Figure 1; whereas movement of lever A to its dot-dash position Figure will effect release of the latch member l2 and consequently the door, through releasing movement of the detent 54. Certain features of the door control mechanisms herein shown and described are disclosed and claimed in the Edwin L. Allen copending United States patent application Serial No. 746,521, filed May 7, 1947, and cross-reference is hereby made to said application.

According to the present invention, novel means are provided, to which the lever A may or may not b responsive, as desired, the tripping effectiveness of the usual tripping operation of such novel means being predetermined; lock means being provided for control of such tripping effectiveness.

To such end push button means 60 is mounted in the door I4 for operation from the outside thereof by depression against a spring 6| to move a push rod E within the spring and borne against the inner face of the push button means thereby, which push button means is in the form of a hollow plunger having a rearwardly opening cavity to receive both the spring and the push rod; the arrangement being such that the push button and its push rod E are yieldably urged by the spring 6| outwardly of the door l4 as shown Figure 1. Also the push rod E, as seen in Figure 1, is in line with the lever A so that depression of the push button may move the push rod shank end against the spring 6| to engage the lever A for tripping actuation thereof as indicated in dot-dash lines. Under such conditions the push button 60 has tripping effectiveness.

Means are provided, however, for rendering the push rod E inefiective for tripping actuation of the lever A notwithstanding depression of the push button.

To such end as here shown, the head end of the push rod E and its seat within the push button 60 are made spherical so that the push rod may have swinging adjustment within the push button and spring 6|, which latter is conical for the purpose.

More particularly, as indicated the spring 6| has a small head end bearing against a head on the push rod to maintain bearing between the push button and the push rod, the opposite or base end of the spring being enlarged to clear the shank end swinging of the push rod and bearing against a suitable annular seat within the housing 62 in which the push button slides, the housing and push button being formed to provide the cooperative annular shoulders indicated at 63 for limiting outward push button movement.

The amount of swing of the push rod E, permitted by its described associated parts, is such that it may be moved upwardly from the position indicated Figure 1 to the position indicated Figure 2, wherein, upon depression of the push button 60, the push rod E will clear the tripping lever A, as indicated Figure 3.

For such swin adjustment, a slide 64 is mounted in the base part of the housing 62, the slide having an opening loosely fitting about the shank end of the push rod E, and the base end of the housing including a member 65 which provides the guideway for the slide 64 and has a slot Bl to permit swinging adjustment of the push rod.

For control of the slide 64 and hence of the tripping effectiveness of depression of the push button 59, lock means are provided as generally indicated at 65 and operable by a key from the outside of the door.

The lock means is preferably made a part of the sub-assembly which includes the push button 5!), push rod E, slide 64, etc., for convenient mounting and as indicated in the drawings. The lock means 56 is made effective on the slide 64 as by a crank pin 61 on the lock and a cooperating slot in the slide 64. Thus, as illustrated in Figure 1, push button depression will have tripping effectiveness but, upon key actuated movement of the lock to position the parts as illustrated in Figures 2 and 3, depression of the push button will have no tripping effectiveness.

With reference now to Figures 4 to 7 of the drawings, the general arrangement and purpose is the same as before in that tripping eiTectiveness of push button depression upon the lever A is subject to control of the lock 66; but details of the parts within and associated with the push button itself are modified.

Here the push button 10 is returned by a helical spring H in the housing 12, the push button having arms 73 engaged by the spring and slideable in slots in a sub-base 14 of the housing to prevent rotational movement of the push button. The push button 75 is in the form of a hollow plunger, and a sub-plunger 15 is mounted within sub-housing 14 and carries a push rod E coaxial with the push button 70 and located to engage the lever A. A spring 76 is arranged within the sub-housing 74 to be effective between the base end of the housing 72 and the sup-plunger 15 to yieldably urge the latter against a stop 11.

Means are provided to control the effectiveness of depression of the push button 10 on the sub-plunger 15, these two parts having telescopic relation. To this end pins ?8 are provided on the push button and corresponding openings 19 in the head end of the sub-plunger 15, two of such pins and openings, spaced at about the general push button axis, being illustrated. The arrangement is such that when the sub-plunger 15 is indexed as illustrated Figure 5, with the pins 18 and openings 19 in alignment, depression of the push button Hi will not affect the sub-plunger 15, the pins 18 simply projecting through the openings 19 as indicated dot-dash lines Figure 5. However, when the sub-plunger 15 is indexed at 90 from such pin aligning position, as indicated Figures 4 and 7, upon depression of the push button 10 the pins 18 will engage the head end of the sub-plunger 15 to move the push rod E and actuate the trip lever A as indicated dot-dash lines Figure 4.

Means are provided for control of the indexing of the sub-plunger 15 to thereby control the trip eifectiveness of the push button 10.

To such end the push rod E is toothed as indi cated in the drawings, and the slide 64, mounted in suitable guideway in the push button housing assembly, is provided with rack teeth 80 engaging the push rod teeth.

The lock means 66, having a pin 61 engaging slide 64 at an opening 68 therein, is arranged to provide locking control of the slide 64 generally as before described. The arrangement is such that the stroke of the pin 61 of the lock 66, between locked and unlocked positions, eflects corresponding indexing of the sub-plunger 15 between positions to be inoperable by the push button 18 or actuable thereby, respectively.

It will be noticed that in both examples of the invention herein disclosed, tripping effectiveness is determined by means immediately associated with and largely within the push button; in the first disclosed example such means having swinging adjustment within the push button and in the second example such means having adjustment about the push button axis.

This application is a division of application Serial No. 723,330, filed January 21, 1947 in the names of Edwin L. Allen, Angelo R. de Vito, and Harold B. Muster for Lock Means for Door Control Mechanism, now Patent No. 2,587,583.

What is claimed is:

1. In a door control mechanism, a push rod susceptible of reciprocatory movement in the direction of its longitudinal axis; a resilient member biasing the push rod to one end of the locus of its reciprocatory movement; key con- 2. Door control mechanism as in claim 1 in which the barrier takes the form of a cup-like member the bottom of which is provided with one 'or more acentrally located openings.

3. Door control mechanism as in claim 2 in which the cup-like member receives one end of the resilient member acting to bias the push rod.

4. In a door control mechanism, a push rod susceptible of movement in the direction of its lon itudinal axis; a barrier rigidly mounted on the push rod for axial movement therewith; a resilient member biasing the barrier toward one end of the locus of its movement; a plunger having a part for impingement on the barrier to eifect movement of the barrier in opposition to the resilient member; and, for providing relative angular movement between the barrier and the plunger, key-controlled lock mechanism arranged to rotate one but not the other about the longitudinal axis of the push rod.

5. Door control mechanism as in claim 4 in which the push rod is provided with radially projecting teeth.

6. Door control mechanism as in claim 5 in which the teeth on the push rod coact with a rack forming part of the key-controlled lock mechanism.

EDWIN L. ALLEN. ANGELO R. DE VITO. HAROLD B. MUSTER.

References Cited in the file of this patent UNITED STATES PATENTS Number Name Date 962,448 Miller June 28,1910 1,853,243 Thor Apr. 12, 1932 1,991,822 Snipes Feb. 19, 1935 2,231,075 Lakin Feb. 11, 1941 2,468,644 Springer Apr. 26, 1949

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