US1826553A - Door holder arm - Google Patents

Description

Q Oct. 6, 1931. LASIER 1,826,553

DOOR HOLDER ARM Filed May 11, 1927 2 Sheets-Sheet l 4 fiaz/L'aifi Zaar,

Oct. 6, 1931. D. R. LASI ER 1,325,553

' 7 DOOR HOLDER-ARM Filed May 11, 1 92"! 2 Sheets-Sheet 2 7 a binding of the two heads mav be varied ac- Patented Oct. 1931 means for stoppingand holding doors, and

mo on CHICAGO, rumors,

PATENT OFFICE I ASSIGNOR TO NORTON-LASIER COMPANY,

l CORPORATION OF ILLINOIS o noon notions ARM "Applicationlfiledflt tay 11, 1927. I Serial 1%. 190,427.-

My invention relates to-improvements in more particula'rly to a type of device uti'lizing the relative displacement of the door and door frame when the door -'is opened forefsfecting 'a frictional binding by a relative movement between certain parts of a pivoted link connection between-the door and door frame.

To'this end, I have provided'a stopping and holding device for doors comprising two 'links,the length of, which may-be adjustable,

pivotally Connected at their ends,- their opposite ends beingpiv'otally connected with maybe provided with cooperating frictional the door and door. frame and respectively, forming three pivots in all, any one of'whlch spiral faces adapted-to engage'and bind upon relative movement of the parts of the particular pivot as effected by the pivotal move-' ment of the door'when being opened;

The meansfor efl'e'cting'thefrictional binding comprises a head-formed at the pivot on one of any of the relatively movableparts oft-he link connection, said head'having a spiral'face on one'side thereof with an aperture through its middle portion, said aperture being screw threadedand adapted to receive a holding pivotbolt positioned therein; Cooperating with the friction headthus' formed; is the other of'the relatively movable parts which also" is provided with a hea'd'having a spiral surface on one face thereof co operating with the first-named spiral surface, and with aperturemounted in pivotal relation on the bolt. The bolt is provided with ahead which is" capable of assuming positions of variable spacing,-relative to the spiral face of the head in which it is, mounted so that the relative movement necessary for effecting whereby the event of fire, such-as would closing of the door.

Inasmuch as the opening movement of the door'will effect a relative movement between the parts at any of the pivots of the link mechanism connecting the door and the door frame, thefrictional holding means may be placed at any of the pivots, the frictional face requiring merely for a successful operation a relative turning movement between two parts pivotally connected. The selection of a particular pivot for locating thefrictional holding means will vary with differentinstalla- .tions, it being desirable to avoid dead centers or positions of the link connection at which the translated movement of the swinging door eifects'only a slight relative movement be tween the'parts of a particular pivot especially when this position occurs within a portion of the arc of swing of the door at which a stop and holding action is desired. In order to effect a more positive and eflicient acas translated through the mechanism by the swinging movement of the door, during that portion "of the arc of swing of the door at which it is desired to stop and hold the same.

It is my intention, in practicing this invention to use my improved door stopping and holding means on doors equipped with a door check closer in which case the operating levers employed for connecting the door check closer to the door or door frame, depending upon the manner of mounting the door check closer, will be replaced by levers constructed according ,to this invention; or, it is my intention to apply my device directly to doors which are not equipped with door check closers. It .is also intended that levers equipped with my improved stopping and holding means be supplied as the operating levers with new door check closers, in which case, they .mav both be mounted at once on new installations.

'One of the objects of my invention is to provide a door stop and holding means wh ch V V is simple in construction, efficientandlpositive in operation, and which may be readily stop. and hold a door hold the door applied-tea door of eitherohand, and will in any selected Open position. Y

Another object of my inventionfis to pro-' vide door stop and holding meanslpro- I vide d with frictionalspiral faces adaptedtoz cooperate and bind in a manner to stop and to any desired entent: v 7

Another ob'ect of my invention is to provide a door stop and holding means com prising two relatively movable partsbetweenf which relative movement is efiected on the opening movementof the --door,,said parts having fr ctional jsp'lral faces cooperating in a mannerto bind and-hold the doorfat any selectedopen position; 9

vide adoor stop and-holding means of the above described type jin which the spacebe- .otween one of the spiral faces. and the head i V of' the bolt is. variable by means of adjusting the bolt in the head by" screwing it inwardly oroutwardly rlelative to theheadin Another object of myinven to any predetermined extent.

. whichit is mounted,whereby the relatively 7 angular' movement betweenthelinks necessary for effecting a binding islvarled and ca-" pable of adjustment so that the-armandstop will holdgthe door whenit has Ybeenopen V tion istoprovide adoor stopping ,and'holding' means of the above described type adapted for use in conjunction with door check closers or independently: thereof, asficon'nec'ted directly 7 between the door andsdoor frame :on doors not equipped with door check closers;

A further objectfof my'invention is to provide :a door stop-pingu'and holding arm of di'spla'cementbfjitstwb ends- Another-object?ofmyv nventio'n-is to pro vide a. door holdingfarm, of'the abov'e'lde scribed typefin which a fusible element is incorporated and =so arranged ,that iupon be? permitted to close.

fusion of said'element,excess' space is 'pro-;

'videdbetween normally wedgedparts whereby,'in the'eve'nuof fire and fusion "of sa'id element, the holding arm will-flie'released from its wedged position and the door will These and other objects areiaccomplished byme a s oft ar ng e d s ed wo the; accompanying. sheets of drawings, 1 in Figure 1 is n pl viewofza door clQserand holding arm constructed ac cordance Wltll. my. ll'lVQlltlOIlc installed in 10pwhen thefdoor has been opened Another object of my invention istopio erativeposition, in which'casethe door check and closer is carried on the door;-

-Figure 2 is an elevational View of the eonstruction shown in Figure 1.-

a V Figure 3 isa vlew SlIIlllfi-I 'to Figure 1,

of an installation of theopposi-te hand showing how the same. arm may be .used by} merelyinvert ng its-position:

' Figured is a plane view similar to Figure 1 showing t f doorfch kid t the door fram v V V v Figure'oi's a view similar 'to Figure 4 showing'theinstallation of theoppositehand- V Figure 6 isn'a detailed View in crossnsecay" I tion ,of 'theholding arm constructed in accorda'nce; with my invention. v

' Figure '8 is a view offa modified form of friction device at the pivot at the end of rthe link which is connectedto eitherthe door'or door frame, as thecase'may be.-

Figures 9 and 10 are views showing the" two cooperating spiral facesconstitutingthe ofllCtlOnfil bmdingsurfaces,

f The various} novel features of the inven' tion will be apparent from the; following descriptionrand ldrawingsf and will be par ticularly pointed out in the appended claims.

Figure 7 is a mod'fied form of 'myinvention n which a fusible washer s carried for releasing the device in case of fire. 7

- Referring to the drawings, it will be noted 7 that a device: constructed in accordance' with my invention is adapted to be connected 50a 7 door,10 and.door frame llyso that when the door is opened, tn'rnin gonthe hinges'f12',

relative movement is effected between the pivoted parts. of the connecting link work.

In the ,typeof device shown in Figuresl and 2,;a: door check closer 13 is attached in any suitable manner, aslbythe bracket 14, to the upper-portion of the door s'oth'at the operat- 7 ing 1 spindle L15 will extend above the 1 upper edgeofthedoor in: a manner to receive the operating link 16," the'linkfitting on the slabbed end 17 of the spindle and retained} by the 111113.18. COnne'Ctediatthe other end 1 .o f -link .16 is a second link designated gener= ally as=1 9 pivoted by means; of my improved friction stop. and holding device,-designated generally as 20, tobe'v-hereinafter more fully described, the other end of. the link19 being'pivoted at-the door frame by,,means of the bracket '21 secured by suitable screws 22and attached. by-the bolt 23, which is fastened in the bracket 21 in them anner; to-form a pivot.

The'arm 19ismadefup offour-s'eparate partstoprovide foradjustme'nt'jas tolength and; fiexibility in; mountingas for instance,

mpermit} the opposite end offthe link work to be attached'in different horizontal planes. The outer endconsists'of a friction head por- .tionl9ojpivote'd as bypin 19f to thesocket jmember' 19b,provided ;with aset screw 199'.

The rod is retaine'dfin the member 19?) by the screw in any desired adj'usted posit- 'tion and haslprov'idedthe universal pivot I point either elevatedlabove orloweredgout. I of the plane of the pivotfconnecting'the parts member .19cl'pivoted. at its inner end by the pin 196. It can be readily seen that this ar- .rangeinent'aifords 'adjust'ability as to length,

which will in turn efiect theinitial angularitybetween thelparts and also permits the attaching bracket 21 to be connectedkat a 16'and'f19'a. .Attention is further called'to the factithat thetwo arms of myholding device are pivotedrtogether by 1 a plvot, the

practicallyetogether in a manner to v close'the angle between them;

=Tl1e portion of'myde vice which effects the frictional holding is disclosed in Figures 6,

9 and 10 slightly 'enlarged, and comprises '1 two pivotedmembe'rs as shown at 19 and 16 having headsat their ends, it being understood that these may representtworelatively movable parts of any of the three possible pivots, 'asffor instance, "link :19 and bracket 2150i link'lE) and'jlink 1 6, or link 16 and the bracket towhic'h it isconnected .inthe event that 'a checking device iswnot employed the 3 structure of the friction holding mechanism being substantially thesame irrespective of its" location. The two. relativelymovable members areprovided witlrheads 28 and29,

the heads 28 being formed with a spiral face on one side thereof," and witha screw threaded aperture 31, centrally disposed therethrough." Mounted in the screw threaded aperture 31 isthe bolt 32 which has a smooth shank 33"atits upper portion and a head34 on the end thereof, presenting shoulders'35 I spaced a predetermined amount from the-spi ral face of; the head 28. K'Il1e1 l1ead 29 on- I the arm 16 is apertured as at 36' and mounted onthe bolt 32 in: pivotalrelationsmp and arranged with the washer 37 positioned between itsiupper'face, and? the shoulder ofythe bolt. The head 29 is provided with-a cooperating spiral surface 30 on its face in contact witha cooperatingspiral surface 38 on the other head. 7 F roin Figures 9and10, it will be noted that the cooperating spiralfaces provide: surfaces whichhave a step'between their high and low portions, and aiford relatively large surface: areas -:between which frictional binding will occur. The parts are so disposed relativeito each other, that when the arms are iii-the, position whichthey are caused to assume when the door is closed, the head portions 28 and 29 are oppositely disposed, that is, the thinnestzportion of the (SO head 29 overlies the thickest. portion of the head 28 and viceiversa, whereby; the overall height of the two super-imposed heads is a minimum when the arms are in this position.

v The position of'the shoulder 35iwhichefi'ects the spacing providing for the movement of the'heads relative toeach 'other, and consequent increasing of theoverall height, is determined by the position of the bolt relative to the head 28 in which it-is carried, and consequently, according to the adjustment when the heads move angularly relative to each other, the parts are caused to wedge and to effect a frictional binding between the contacting spiral faces of the head and the shoulder35-of the bolt so that the parts will be locked in a new position. According to the adjustment desired, the bolt 32 is turned in itsscrew opening 31 and when positioned in the desired manner, the lock nut 39 is employed'to maintain the particular adjust; ment. In the modification disclosed in Figure 8, the friction stopping holding means 20 is positioned at the pivot connection between the link 19 and the door frame 11, the bracket 27 being similar to that shown at 21 in Figure '1, with the exception that it is modified to present a friction spiral face to form one of the elements of the friction locking means, the structure of which is shown in Figure 6.

- The modification shown in Figure 7 is similar in all particulars with the device.

shown in Figure 6, being modified only to the extent of inserting a fusible Washer 40 between the washer 3'7 and the head of the bolt. The fusible washer 40 provides means for eflecting the initial space provided for the expanding parts under the screwnction of the spiral'fra'me, and determines together with the adjustment of the bolt, the position at which the parts will bind and lock the door in open position, but in the event of excessive heat as in the case of fire,

the washer 40 will be caused to fuse and flow from its assembled position and thereby provide suflicient space between the pivotal parts to permit" them to move from their frictionalbinding position and permit'the door tobe closed'under the influence of the door closing element. Attention'in this connection is directed, to the modified form of bolt 32 which has an opening 32a centrally dis posed longitudinal through the shank which serves for the purpose of conducting heat centrally of the mechanism to aid in the fusion of the washer 40. r In operation, the stopping and holding means may beapplied to door in conjunction with a door check closer as shown in Figures 1 and 2, or independently of door check closers, the inter-position of a door check closer having no effect upon the operation of my device. The door stopand holding means may also be applied to'a right hand or left band swinging door with equal success.. the change from one type of door to the. other merelynecessitating that the devicebe turned over, the stopping and holding operation being accomplished when a l relatively angular iposition between the two :inembersincr'eases upon opening of :the door 7 which;occurs irrespective of which side of theidevice is-facing'npwardly. 1 R

a An important feature of invention re sides inthe fa ct that I have provided a pivotfor. the outer ends of thegarmswhic-h lsgsym j i'netrical in appearance. This'is .found'to be .quite an improvement "withreference to the V reversibilityof; thehclder when applied to doors ofxli fierent hand. It can be seenjthat in installing holders on "a pair of doors in a case wheretwodoors are used vfore-a single doorway, that is, one rightand one left hand door, that itxi'simportantto have the arms symmetrical if a uniforniappearing installat on is desired. It a; pivot ls-fused which' v1s not symmetrical, the [reversal of one of a the arm's would cause one inside armto be ;up and the other inside, arm to be down with the result that. a very ugly installation is had. the type'ofholder arm :which is not symmetrical an dthe arms of which are capable of relative movement aroundand around throughout1360", the arms may-be swung .past each other and open up the oppositeorimproper direction, so that when carpenters areinstalling such 'devices they. may openthe arnisln the" wronginanner-for the-purpose ofobtaining a symmetrical appearance, but] at thesacrifice Y oi-frendering one-of the devices inoperative-by movement of the cam' faces in a d rect on opposite to.

q f that which-is necessary to efi'ect frictional binding. This'isalso-important torthe rea- Son that it 'is found' in practice that carpene ters will n'otinstall'tlie holders with-one inside arm. up and the other inside; arm

confident;thatithis is'wrong.

dowi'izbecause, due to the'appearance My; invention eliminates any suchpossibil-L ityas the arms cannot be'swung past each other, butare caused to.swing inl'the same "llQIZZOIltiLl plane.'- Th s feature furtheriprm vides i devic-e which appears substantially thesame regardless'oi' the manner in which it is installed-and operated and" further. due

' toth-e-symmetrical arrangement of the head,

' J ts thearmscannot be swung past each other tocopen up inithe improper directionand "therefore cannot beiimproperly installed,

The selection of the particular. type,that

..i's,.the..locat ing:of ;the friction means :at' a 1 particularpivot, is dependent upon the type of doorfand'the' pOihtalOngthe arc of its opening movement at .whi'ch' it is desired to; stop and-hold it, the pivot selected being t-h at which by thetranslated movement of the opening :door efi'ectsithe greatest relative movement between the. pivot parts during that'portion of the' arc when the stopping j and holding action-is desired. Inasmuch as {a relatlvje movement .between the two. parts [such as 28- and 29 in Figure 6 is} effected by the opening.,mov;ement of the door, it can they feel .be *rea'dilyiseen that when the'door open sthatithe 'member 29 will rotate'on the spiral face 30 to a new position, at which time the spiral faces 30'and 31 will 'frictionally bind. and cause" a binding between the outer face. of the head 29, the'washer 27 and theishoulder :35 of the .bolt', the spiral faces. being {of such gradual pitch that due. to "the great mechanthe "door acting as a lever, relatively slight force 7 applied at the :door will 'causejthe fric- :tion facesto hold-the jdoor initsstopped open positions I I I ical advantage-etfected-by the lever parts and V p 'The' type l of stopping; and device shown-in Figures 1, 23and53, that is, having .the friction faces at the'fpivot between the ends of the two links, is called the 9Q type for the reason that during the opening 'move mentof thedoor :theimovement of the parts of this pivot I only cause;- a 7 relativedisplace- "mentof these parts ofab'out,9Q?. The type disclosed in Figure 8, namely the type having the friction stop; at the pivot connecting the for. the reason that a l8Q ni vement-is'efiect ed at this pivot when the {door is opened.

" .It has been fo'und inpractice that thef90 type is the; most satisfactory,- provided it is {desired to provide a means for stopping: and

holding the door within the first120 of the parts of th'e pivot ofthe;90t-typ'e is very slightafter the asc ibes t-eenop n d 120, whereas, on the contrary, the relative movement lbetween the parts comprising the: 180

2 type is :very slight untilafter the; door has 19 to thedoo'r i's called the.,180f'type' beeniopenedxl'2o9'j It is to be noted that the holding armswhether empl'oyed with or without door closers: may be mounted on either side ofthadoor, that is, 'on'the -hingesidei -or on'the side opposite thatofthe hinge side, difi'erences in the I side of mounting'only necessita-tingf different typesof pmounting will be noted that the device represented there is ,mounted on the side {opposite the hinge "side,.-the bracket 25 being attached to I the soiiiit of the door'fram'e, and that the: devices shown inaFigures i1-and2 are mounted on the hinge side.""Attenti0n is called to the'fac't that in either'base the adjustable arm shown at 19 extendstowardthe doorknob 'side'of the door and is attached remote-from the hinges as comparedwith the attachment of arm 16.

-.To adjust the 'device'iit is merely necessary to loosen the locknut-39 'and adjustthe bolt Zin'itssocket 31 wherebyavariable-space between theobolt'head 35 and'the spiral face30 of the head 28 is effected. lAccording to the particular angular displacement between the members necessary to effect the locking at the brackets; ReferringtoFigures 4 and 5, it V desired opening position of the; door, the nut may be caused to assume any spaced position.

v In a particular adj ustedposition the locknut is again .tight'ene'dwherethe parts are held;

The operation of the device shown in Figure' 7 is merely one which, in case of fire, will arms are released and thedoors are 4 cause a fusion ofthe washer 40 to permit the arms to provide more" space between the shoulders, head and the cam face, whereby the permitted to close. I y I I claim: a 1 r 1. In combinationwith a door and door frame, a pair of pivotally connected arms and means for pivotally connecting said arms to the door and door frame respec tively, the relatively movable parts constituting one of said pivots comprising a head having a spiral face and a step between the high and low portions thereof; a pivot bolt rigidly carried by said head, having a surface spaced from andopposed to said face, and a second head pivotally mounted on said bolt between said face and surface, also having a spiral face and a step between the high and low portions thereof, said last named face being disposed in contact with saidfirst face, said heads being adapted to provide freedom of pivotal action throughout apredetermined range of movement and to frictionally bind through out a relatively large contact area when the higher portions of said spiral faces come into vertical alignment.

' 2. In combination with a door and door frame, a pair of pivotallyconnected arms and means for pivotally'connectingsaid arms to the door and 'doorframe respectively, the

relatively movable parts constituting one of said pivots comprising a head having a spiral face and astep between the high-and low portions thereof; a pivot bolt rigidly carried a by said head, having a surface spaced from and opposed to said face,and a second head pivotally mounted on said bolt vbetween said face and'surface, also having a spiral face. and a stepbetween the high and low portions thereof, said last named face, being disposed in contact with said first face, said heads being adapted to provide freedom 'of pivotal action I throughout a predetermined range of move- "ment and to frictionally bind throughout arelatively large contact area whenthe higher portions of said spiral faces come into ahgnment, said bolt being capable, of adjust- -ment to alter the distance between said first named spiral face and said opposed surface.

3. In combination witha'door anddoor frame, a pair of pivotally connected arms and v means for pivotally connecting said armsito the door and door frame respectively, thethereof, said last named face being disposed in contact with said first face, said heads being adapted to provide freedom of pivotal action throughout a predetermined range of movement and to frictionally bind through out a relatively large contact area when the higher portions of said spiral faces come into alignment, and a fusible washer on said bolt occupying suliicient space between said first spiral face and said opposed surface to permit release of the binding action upon fusion 7 thereof. a Signed at Chicago, Illinois, this 5th day of May, 1927.

DAVID R. LASIER.

relatively movable parts constituting one of i said pivots comprising a head having a spiral

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