US1896907A - Doorlatch - Google Patents

Description

Feb. 7, 1933.

i A. R. LINDSAY DOORLATCH' Filed Jan. 30, 1929 Y Patented Feb. 7, 1793.3

f n UNITED, STATES:

ALEXANDER R. ,LINDsAiL OF DETROIT, M1onrGAN,'AssIGNOR ro. THE STUDEBAXER Si?.

CORPORATION, OF 'SOUTH BEND, INDIANmA CORPORATION `OF NEW .JERSEY p i Appncafioa mea `January 30,1929. semi' N9. 336,194..

This invention relates to door latch operating handles, l,and particularly to means for flocking the handle against rotation to there-` byprevent the unauthorized opening of the door of which the latch'vmechanismv forms a ber for moving the same into engagement with the door to thereby lock the door latch handle against rotative movement, w and spring means forV moving the locking member out of engagement with the door to permit rotative movementaofthe door latch `operating handle.

A further object `is to provide a leaf spring secured to the lock member adapted tol be A placed'under tension@ when the lock member is in extended position and operableV to retract Athe lock member. i

The above being among the objects of the present invention, thesame consists vof certain featuresV and combinations of partsto 340 be hereinafter describedand lthen claimed having the above and other objects in view. In the accompanying drawing which illustrates a' suitable embodiment of my present invention, i

being broken away and in section, showing the locking member in locked position.

' Figure II is a perspective view*` similar'to I Figure I showing the lock member in rel tracted position. Y

Figure IIIl is a sectionalview taken on the line 3-3' of Figure I, showing the look mem ber'e'ngaging the door. i p Y i Figure IV is a sectional 'view taken on the line 4 4 of Figure II, showing the lock memberfin retracted position. j i f.

Figure V is'a sectional view showing the `pin for-preventing longitudinal movementofthe cylindrical member :relative to the hollow shell.V Y

Figure I is a perspective View, certainparts Referring in detail to the drawing in which like numerals refer to like parts throughoutl the several views, lI have showni for the 4purpose of illustratiom'a lsection of a motor've` hicle 'door comprising an edge'fface member 1 having its front face covered witha sheet metal vplate 2. The latch mechanism 3, "a

portion only of which is shown in Figures I v and II, is securedzto the rear-face of Athe-donf structure. 1 f* The latch vmechanism may "any de?V sired type and isactuated `by means' ofthe exterior handle 4 having a shank'`5 in which is secured a hollow shell 6 adapted-to rotate" with the handle 4 and to -be inserted through an opening 7 inthe faceplate 2. A-,nut '8 is threadably secured to the shank 5 ofthehandle 4 against which isseated a washer '-9`irr terposed between' the nut 8'and the escutcheon plate 10 vfor holding the handle 'against longitudinal movement. The hollow shell 6l terjminates at its inner end' in a shaft 11 having a square portion 12adaptedto`operate the latch mechanism 3 by the rotation of the handle4.

A cylindrical memberlB rotatably mounted in `the "hollow shell'6 is held against lonfgitudinal movement relative thereto by means of the pin 14 secured in theshell A6l and seat` ing in a groove 15 formed in the'c lindrical member 13 as is clearly shown in igu'res'fI, IIv and V. A member 16 Vis eccentrically formed Yon or is secured 'to the innerend of, the "cylindricall member 13; n A

'A locking member 17 is slidably supportl ed in a slot 18 formedin'the hollow shell 6. andhas a reducedfportion 19 adapted to 4re'- Y ceive and be further supportedby a sprin 20. The spring 2() isV secured'Y tothe-'loc member 17 by riveting the inner end thereof over thefspring orzotherwise securing the same thereto. j The locking member 17 is held the door.' lWhen the locking member 17 is moved to the extended position'to engage the A109 p a Y ner'foropeningfandclosingthe door- 1 yItv'vill thus be: seen YthatI `haveprovided a-simple andefficient means for-locking they Vlatch* mechanism against Vmovement and While Y vI haveshovvnfone'embodiment of my invendoor edge member 1,'the spring 20 is held vunder tension as is clearly shown in FigureJ III. .When-the member 16 is rotated tothe position shown in Figures IIand IV, Vthe tension of the spring2O is relieved, the same acting to retract the. locking member out of engagement .With the dooredge member 1. i*

n The cylindrical member 13 is providedwith Y V.Figure lorvicey versa. As the lock mechanismin the cylindrical member 13 formsfnoVv part of my invention, thesame Will not be described-'further but reference-may be had tothe patent application to James lRI-Iughes,

VvSerial No. 333,178, led J anuary-17 ,1929, for-'afclearer-understanding ofthe same.i l V-Havingdescribed the construction of the` wv-parts forming my invention, `,the `operation thereof should be readilyunderstood. When it is desired to locky lthe latch mechanism againstr-fmovement,thegkeyY 22 is inserted in thecylindrical membery 13 so that itV can be rotated independently of the .handle't `and i .then-hollow shell, to rotate the member 16 ISO-'degrees :fromthe lposition shown inFigureg'II-to'the position shown in Figure I.

@3 5 .drawn-wherebyl the l,cylindrical member 413 'When in this positiomvthekey 22 can be withcannot be rotated independently of the handle 4,',andbecause thelock member 17 is eX- i Y tendedintothe s1ot21 formed-.in the door edge Vmember 1, the door handlel and the latch mechanismoperatively connected therewith-is thus. lockedagainst movement.V

In the same manner the l iey.22 can-beY insertedin the cylindrical member 13k when the Y locking member f1? is ink .lockedl position so that the member-16 can be rotated 180 degrees .'totheiposition shown in Figure II. When 'rotated-tothisgposition, the spring 20 Will f Y retract the-locking member 17movingthe samei out ofthe s lot'21 in thedoor edge mem- ;ber 1; The key 22 can then be Withdrawn from the -cylindricalamember v1.3Y andthe cylindrical member 13 Willrotate Withk the handle 4- and the hollow shell v6 sothat the latch V'mechanism can beoperated in the usual manftion, it 'is to beiunderstood that formal changes can'be madeV therein vWithoutv departing from A thespiritandfsubstancerof myyinve'ntion,

thel scope of Whichis commensurate With the appended'claimsg Y WhatI claim its: .I

1. In combination with a doorv'structure I having an opening in the edge face thereof,

a rotatable latch operating handle including a tubular 'shell mounted in the side face of v.

said door, a. cylindrical memberlrotatably mounted. within @said f shell, key-operated means inserted in the exposed outer endrof Y said cylindrical member for rotating the same,fa member eccentricallyf formed on the endV of `saidfirst member 'opposite to saidkeyoperated means, a locking `member supported by said shell transversely ofsaid irstimemf ber in engagementvvith said second member whereby rotation thereof. in one direction moves saidlocking member into the opening in the edge face of"said1door,gandza leat` 'i l spring supported by f said:Y locking member f Withinsaid tubular shell `for retracting said c locking member when said second member is turned in the opposite direction. a

2. In combination with adoorhavinga sheet metal edge member provided WithCan;

opening therein`,j.a rotatable latch operating the sidefaceof said door, a-locking member extending transversely of 'and' slidable through Yan opening formed in' said'shell, a cylindrical member slidablyV mounted in said shell having an eccentric thereon engageable f;

with said locking member for vmovingthe. Y Y

same into the opening inthe edge face of saiddoor to constrain said' latch operating handle againstrotative movement, iand Va cent the inner end thereof for` reti-,acting said spring securedto said locking member ad-ja- 1100 locking memberto move the "same 4out of engagement with said'door edge member.v`

3. In combination Witha door having a sheet metal edge membery provided with' an I' opening therein, a rotatable latch operating`V` handle having a-tubular shell'mounted in a side face of saiddoor', said 'tubular shell having a slot formed therein adjacent the introlled -member rotatably rmounted in said shell, an eccentric on saidmember engage'able with the end of said locking memberfor movfaceof said' door,Y and ay leaf spring secured adjacentrtheend'of said locking member nery end thereof, a locking memberfslidablyllf)r A -mountedinlthe slot in said shell, a key-coning the' same into the opening in thiefedge"11i151 Within said hollow-'shell for movingfsaid Y.

locking member-out of engagementvvith the edge face'of said door.;

, Y e ;1;,20Y 4. In combination with a deorjhaving anA v, f edge member providedwith an opening therein, a` rotatable latch operating handle -provided with' a slot therein mounted in the face "said door, a locking membermounted'in I Y said slot and slidable in said shellinto andout i of engagement With the opening'infthe edge fmember. of said; door; a key-controlled Vcylindrical member rotatably n mounted-inf said p v f vshell,'rmeans on said key-controlled'member handle having a tubular shell mounted in 190 i engageable With the end face of said locking member for moving said locking member into engagement with said door to thereby restrain rotation of said latch operatin handle, and spring means supported by sai locking member engageable with the inner face of said shell for moving said locking member out of engagement with said edge member of said door.

l0 Signed by me at Detroit, Michigan, this 28 da of Januar 1929. A

y Y AL/XANDER R. LINDSAY.

CERTIFICATE 0F CORRECTION.

Patent No. 1,896,907. February 7, 1933.

ALEXANDER R. LINDSAY.

It is hereby certified that error appears in the printed specification of the i above numbered patent requiring correction as follows: Page 2, line 124, claim 4, before "face" insert the word "side"; and that the said Letters Patent should be read with this correction therein that the same may conform to the record of the case in the Patent Office.

Signed and sealed this 9th day of May, A. D. 1933.

M. J. Moore.

(Seal) Acting Commissioner of Patents.

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