US2440509A - Latch construction mounting means - Google Patents

Description

April 27 1948- G. HAGsTRoM 2,440,509'

LATCH .CONSTRUCTION MOUNTING MEANS Filed June 14, 1946 Patented Apr. 27, 1948 LATCH CONSTRUCTION MOUNTING MEANS Gotthard Hagstrom, New Haven, Conn., assignor,

by mesne assignments,

ware Corporation, Bri ration of Connecticut to The Pioneer Hard- Y dgeport, Conn., a corpo- Application June 14, 194s, serial No. 676,791 e claims. (C1. 292-348) The present invention relates to improvements in latch constructions and relates more particularly to the type of latch construction in which two latch-units are employed, each having means inter-threading with similar means onthe other latch-unit, wherebythe two said latch-units may be clamped against the respective opposite sides of a door or other closure.

One of the main objects of the present invention is to provide a superior latch construction of the character referred to and having simple, reliable, effective and inconspicuous means whereby one latch-unit may be conveniently turned with respect to the other to 'eiect the clamping of both latch-units in place.

Another object of the present invention is to provide a superior latch construction of the character referred to and having one of the latch-units provided with a wrench-receiving portion and with a cover-member movable into and out of positions wherein it alternately conceals and exposes the said wrench-receiving portion.

With the above and other objects in view,'as will appear to those skilled in the art from the present disclosure, this invention includes all features in the said disclosure which are :novelV over the prior art, and not 'claimed by me in my copending application Serial-No. 665,300 led April 26, 1946.

In the accompanying drawings, in which certain modes of carrying out the present invention are shown for illustrative purposes:

Fig. 1 is a view of a. latch construction embodying the present invention and shown as mounted adjacent the edge of -a door, "the showing being mainly in plan with the knob, cover-plate, clamping-plate anda portion of oneof the couplingsleeves being in central horizontal section;

Fig. 2 is a transverse sectional viewV taken on the line 2-2 of Fig. 1 but omitting the door in order to View the inner face of the clamping-plate and associated features, the wrench-receiving notch of the cover-plate being shown in registry with the similar notch of the clamping-plate;

Fig. 3 is a view similar to Fig. 2 but showing the cover-plate as turned to conceal the wrenchreceiving notch in the clamping-plate;

Fig, 4 is a broken detail sectional view taken on the line 4-4 of Fig. 3 but on a larger scale;

Fig. 5 is a perspective view of the cover-plate or rose detached and viewing the same mainly from its inner face;

Fig. 6 is a similar View 0f the assembly comprising the clamping-plate and its couplingsleeve; and Y Fig. 7 is-a perspective view of a Spanner-Wrench suitable for use in turning the clamping-plate and the cover-plate or rose.

The particular embodiment, chosen for illustration in the accompanying drawings forpurposes of making clear a preferred form of thepresent invention includes a casing I Il adapted to have its inner face seated against the ladjacent face of a door or other closure '.II and provided centrally with an externally-threaded rigidcoupling-sleeve I2. The said coupling-sleeve projects in .tq the adjacent end of a clearance-passage I3 formfedin the door I I, as is indicated in Figgl. "V 1; Seated againstthe face of the door oppositethe casing I0 is an escutcheon-platefunitjjgenerally designated by the reference character I4 and comprising a relatively-thick entrally-apeituretl clamping-plate I5 and!` 'a Vrc1atively-t hi1 1` cupshaped cover-plate'or rosel. A Y Y A Y Y The central portion of: theclampng-plate vl5 above referred tolis pressed to provide an oisetportion I'l surrounding the aperture inthe said clamping-plate and normallyseatedagainst the adjacent face Aofthe door IIQas is', indicated in Fig. 1. RivetedV or otherwise rigidly united with the offset-portion I 'l of the Vclamping plate I 5,is an internally threaded coupling sleeve A I8 threadedly receiving the externally-threaded coupling-sleeve I2 before referred to. In its `outer periphery, the clamping-plate I5 isformed Vwith a wrench-receiving notch I9,Vfor`1purposes as will hereinafter appear. Y Y 'Ihe cup-shaped cover-'plate orrose I6 before referred to has its annular flange 20 extending in an axial direction over the outer periphery 'of 'the clamping-plate I5 and providedwith a clearancenotch 20a. At its free edge, the ilange 2liV is formed with four (more or less) retaining-fingers 2| which are bent over against ythe'inner face of the clamping-plate I5 to retain the latter and the cover-plate in assembled relationship, while permitting relative rotation t'o'take place Vwhen'desired, between the said clamping-plate I5 and the cover-plate I6. Y

The cover-plate I6, in addition to its flange 20, also includes a face-portion 22 covering the outer face of the clamping-plate l5 and'liaving its center apertured and pressedoutwardly .to provide an .offset-portion. 23. Rotatably connected to the olfset-portion 23 just referred to,` isa knob or other suitable operating-member 2Q, asis Vshown inlFig. 1.

In order to connect the'knob 24 or itsequivalent with the cover-plate or roseV I 6 in such manner as to permit relative'rotation. the said knob 24'is 3 provided with a relatively-slender neck 25. The said neck extends through the aperture in the center of the offset-portion 23 and is burrecl or riveted over as at 26 against the inner face of a washer 21. The neck 25 also extends through the washer 2-`I whilethellatter bears against the inner face of the oisetfportion 23 and turns thereon when the knob 24 is rotated.

The knob 24 or other suitable o-perating-rneln-- A e ber is, in a manner usual in the art, provided with an axial passage 28 of square or other suitable non-circular form in cross section.A Thesaid passage 28 receives the adjacentend oa spindle-.29.'

projecting freely through the couplingsleeves- I2 and I8 as well as through the casing IIi, from a lever-handle 30 or other suitable operatingclamping-plate I5,

member. The spindle 29 has a cross-*sectionalA form substantially corresponding to the crossfsec f tional form of the passage 28 in the knob 2li and isurigi'd with the lever-handle 30,` VIn this manner, theknobf24 and leverhandle Siiar'e coupled together fdr concurrent movement by the' spindle 29 inthe; event that either the' saidV knob orthe said'r leverh'andle' maiiiiallytiirned.

Iliemfriotion'enga'gm nt between the coverplate I'I and the fcl'ainpingjlate I5 is greatly in excess., of v the very slight frictiiflal 'engagement betweenftheknob '2 lI` 'andthe vsaid cover -plate' so @hat unlepj normar jcdindjriswnenj the knob ze is turned itgiml-l net e'ffet 'nie' 'of the @we pleief Y Projecting ou latch-member@ mercenari# afresngndief-2Q-r dees, nt Ferseform in-ven'ti'Y @ne/"form of'be my copending a notch IQinjj/he clamping-plate i'itfherebyfexposing the said notch I9 in the manner-shown in Figs. a1 and 2.- y./.kny suit-abletool maybe inserted into the' nowexposed rw renc' lin eceivirig notch la to eiect the turningmovementwof the clamping--V plate l5 and. hence. itsscoupling-sleeve iB Wiih respect to the couplingasleeve I2. Inthis manner, the inner face or thesaid:'Clamping-plaie may be firmly-'seated against `.the-adjacent face of the door II, while at the same time drawing the inner faceofi thecasing Ifinto firm seated engagement With the: opposite facejof the said dorf. i ;J.-l.;; j

After the clamping-plate I5 has been tightened,

For the purposes of turning the clamping-plate I5 and cover-plate I6, I have found it most conlo venient to employ a Spanner-wrench 33 of the general character'iflli'strated in Fig. '7. The said spanner-wrench 33 is` formed at one end with a vshtar'ji 'lldirnoned so as to freely extend througitheTjelarance-notch 20a in the flange 2U 'and intothe'wrench-receiving notch I9 in the Y v in the manner indicated by brkenliines' irl-Fig'. V2. Extending outwardly from thearnrtd is a nger 35 suiciently narrower than the said arm to leave a portion of the end of the latter. unencumbered t6 provide a stop-shoulder se.' Tneed'ge erf tir 'scanner-wrench; adacent the afin'Y figrv 35 f'jl Ion'g'itl'ldinelly curved as atie-Ito sutstantially `c 'si-lforfn lte the prphral cht'if.. f thflaig EUMC@ the @ever-plate-lsjr n i 1 the, 'stop-shaun@ mislima the penetration of the fingern warmnav, permit: the same to extend ,into the Wenh1re eivir1g-mth-lmince sembly, the procedures: above referred to may be reversed.

Y The inveniifmsmay beren-istitu@ in zother Spigwavs. than time Herein- Set terbil Without departing from; triespiti-tand essentialfoharaoteriSiGS' 0fihenventibn. and the present embodimentsarefftherefore, Lobe considered in. all ree spectsas illustrative-andnot restrict-ive,v andvall changes comingy irfitlflin; theN inea-ning and equive alency rangeof the-appendedfolaims are :intended to be embraced therein; j

1. A' latch-fcon's`truction, includinggi'in "combinata tion: afirst' latcheunit designed adradaptedifor engagement with onfaceeofjf afdoor andrprovided with althreadedfportion having its axis' extend-ing in a.; directionV transverse ot surchf door; "and Va second'latcheunitfdesignd and4 adaptpe'dfor" engagement Withfthefopposite 4face of: V the door from the said iirstiatcheunit `and providedV With-a threadedjportion'threadedly engageable With'the threaded portion ot the saidrirst' latch-unitJ and jointly therewithl providing \couplingeingang YV 4 t0 couple the two v'latcli-funifts togetlfrenj;v jonego` Athe said latch-units including a'larnpingemember rigid with its saidfthreadedfportioneandiformed with a Wrenchereceiving; recessv constructed and arranged to receive a tfool whereby the clampingmernber and its rigid threaded portion may be turned with-respect to the threaded portion of the otherlatch-unit' to -clamp a door betweenthe two said latch-units; and a cover-member covering the outer face of the said clamping-member and'formed with a clearance-opening located so as to be movable into and out of registry with the wrench-receiving recess oi the clampingmember, thev said cover-member being rotatable with respect to the said clamping-member to move its clearance-opening into and out of registry with the wrench-receiving recess in the clamping-member.

2. A latch construction, including in combination: a rst latch-unit designed and adapted for engagement with one face of a door and provided with a threaded portion having itsaxis extending in a direction transverse of such door; and a second latch-unit designed and adapted for engagement with the opposite face of the door from the said first latch-unit and provided with afthreaded portion threadedly engageable with the threaded portion of the said rst latch-unit and jointly therewith providing coupling-means to couple the two latch-units together; one of the said latch-units including a clamping-plate rigid with its said threaded portion and formed in its periphery with a wrench-receiving notch constructed and arranged to receive a tool whereby the clamping-plate and its rigid threaded portion may be turned with respect to the threaded portion of the other latch-unit to clamp a -door between the-two said latch-units, and a coverplate covering the outer face cf the said clamping-plate and formed in its periphery with a clearance-opening located so as to be movable into and out of registry with the wrench-receiving notch in the said clamping-plate, the said coverplate being rotatable with respect to the said clamping-plate to move its clearance-opening into and out of registry with the wrench-receiving notch in the said clamping-plate.

3. A latch construction, including in combination: a iirst latch-unit designed and adapted for engagement with one face bf a door and provided with a threaded coupling-sleeve having its axis extending in a direction transverse of such door, the said iirst latch-unit having an operatingmember associated therewith; a second latchunit designed and adapted for engagement with the opposite face of the door from the said rst latch-unit vand also provided with a threaded coupling-sleeve threadedly engageable with the coupling-sleeve of the said iirst latch-unit, the said second latch-unit also having an operatingmember associated therewith; one of the said latch-units including a clamping-member rigid with its said coupling-sleeve and formed with a wrench-receiving recess constructed and arranged to receive a tool whereby the clampingmember and its rigid coupling-sleeve may be turned with respect to the coupling-sleeve of the other latch-unit to clamp a door ibetween the two said latch-units, and a cover-member covering the outer face of the said clamping-member and formed with a clearance-opening located so as to be movable into and out of registry with the wrench-receiving recess of the clamping-member, the said cover-member being rotatable with respect to the said clamping-member to move its clearance-opening into and out oi registry with the wrench-receiving recess in the said clampingmember; and a spindle extending through both of the said coupling-sleeves and operatively interconnecting the respective operating-members of the two said latch-units,

\ 4. A latchconstruction, including in combina:r tion: a iirst latch-unit designed and adapted for; engagement with one face of a door and provided with a threaded coupling-sleeve having its axis extending in a direction transverse of such door, the said iirst latch-unit having an operatingmember associated therewith; a second latch-unit designed and adapted for engagement with the opposite falce of the door from the said rst'latchunit and also provided with a threaded couplingsleeve threadedly engagea-ble with the couplingsleeve of the said rst latch-unit, the saidsecond latch-unit also having an sociated therewith; one of the said latch-units including a` clamping-plate rigid with its said coupling-sleeve and formed in its periphery with af wrench-receiving. notch constructed. and `arranged to receive 'a tool whereby the clampingpllate 4and its rigid coupling-sleeve may be turned with respect to the coupling-sleeve of. the other latch-unit to clamp a door between the rtwo said latch-units, and a cover-plate covering the outer face of the said clamping-plate and formed in its periphery with a clearance-opening located so as to be movable into and out of registry with the wrench-receiving notch in the said clampingplate, the said cover-plate being rotatable with respect to the said clamping-plate to move its clearance-opening into and out of registry with the wrench-receiving notch in the said clampingplate; and a spindle extending through both of the said coupling-sleeves :and operatively interconnecting the respective operating-members of the two said latch-units.

5. A latch construction, including in combination: a iirst latch-unit designed and adapted for engagement with one face of a door and provided with a threaded portion having its axis extending in a direction transverse of such door; and a second latch-unit designed and adapted for engagement with the opposite face of the door from the said iirst latch-unit and provided with a threaded portion threadedly engageable with the threaded portion of the said iirst latch-unit and jointly therewith providing coupling-means to couple the two latch-units together; one of the said latch-units including a clamping-plate rigid with its said threaded portion and formed in its periphery with a wrenchreceivin-g notch constructed and arranged to receive a tool whereby the clamping-plate and its rigid threaded portion may be turned with respect to the threaded portion of the other latch-unit to clamp a door between thetwo said latch-units, anda cup-shaped cover-plate covering the outer face of the said clamping-plate and having an annular ange extending over the periphery of the said clamping-plate and terminating in means engaging the inner face of the said clamping-plate, the flange of the'said cover-plate being formed with a clearance-opening movable into and out of registry with the wrench-receiving notch in the said clampingplate, the said cover-plate being rotatable with respect to the said clamping-plate to move its clearance-opening into and out of registry with the wrench-receiving notch in the said clampingplate.

6. A latch construction, including in combination: a first latch-unit designed and adapted for engagement with one face of a door and provided with a threaded coupling-sleeve having its axis extending in a direction transverse. of such door, the said irst latch-unit having an operating-member associated therewith; a secoperating-member. asl Iateh-unitdesigned. arieh adaptedorren'gageoppositeziice of' the; from the msi. latchavmitl amclA alam provided; with; aithreadd cau-pl'mg-sleeize. threadeddyfA engage.-y ahleg. with.- thef, `csrmllilngrseeizev @i the? said. re latchfunit; the sairiksecondf labchfurt also ham4 ingi operating-member; associated therewitm; une oftheisazidilatchfunits including@L damning: piaghe;Sigi-1d,` vizi-ish;` its sai@V @Clipline-sleeve and initsperiphery with, a. wrenchereceiving* metck: constructed:w endiarranged:tofreceive animal; Wherebywtheff eiampingfplate. and its. rigidi coni:-l plingfsleevef maybe* turned. with respect; to; the emxplillgf'sleeve.4 oi: the., otherf 1zmich,-u1r1:itv to; clamp av. deozrrrbetween; the twofsaid; laitehfunts; :md-.-l a mipshaiped covereplate.- coifernI the outer: face of; thezsaidz 'clamping-plate and'- hav-ingr auf nulanfiangezextending. over-theL periphery of the. said1-e1aamping-plateand' terminating in` means engafgri'githe inner lili face; oit the; saiflv clamping* 2Q ormednwithf a.; clearancefoneningf mui/tablier into and.; out, of registry4 with the, wreneh-lieeeiying' nntchrim the; saidicl'ampnV-plate; the said covertpl-aite being; miei-sable with respecttQf the said. ciampifngrplanef te mwey its clearance-opening, iniofarld: (mi:i of; registry: withA thefwrench-receiw ingincmch the said cla-.rnpingrplate-iv and: ai spindle: exteiapftirigl thmugh bath of:V thef said: @angling-sleeves and: operatively interconnecting thevrespetivefQperaitngrmembers. ofthe t'milcrsaiid4 latch-units i Y *l GOTTHARDf M REFERENCES; CITED' j Y The' folloivving,` referencesaare of4 record'V in the@ ie-ol thispatentt# Y UNITED STATES PATENTS

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