US1618250A - Doorstop - Google Patents

Description

G. W. wE| l s DOORSTOP f' Feb. 22, 1927. i 1,618,250

Filed Jan. 1o, 1.924

Patented Feb. 22, 1927.

GEORGE W. WELLS, OF AMESBURY, MASSACHUSETTS.

DOOBSTOP.

Application filed January 10, 1924. Serial No. 685,368.

i the plate having a coiled spring in one end lli portion of the slot, which is arranged to be engaged by the pivot which slides therein, as the latter is drawn into said slot end portion, at the end of the opening movement of the door, so that a yieldable resist-ance is provided to the further opening of the door. While this device performs its intended function in a sufficiently satisfactory manner, it is expensive to use on account of its lcost `and the cost of installing it, the work of grooving the upper edge of the door and fitting the slotted plate thereto being an important item of expense, and the fact that water is liable to accumulate in the groove is an objectionable feature.

The objects of my invention are to provide a simple and effective form of door stop of the character above referred to, kwhich may be both manufactured and installed at small expense as compared with prior devices. Also to provide a form of door stop which will act as a lbuffer for the closing of the door and will act to open the door slightly when it is unlocked.

I accomplish these objects in the manner hereinafter described and illustratedV in the accompanying drawing in which:

Fig. 1 is a plan view of the top portion of a door and casingy provided with a preferred embodiment of mylinvention and showing the door in open position.

y Fig'..2 is a cross section at line m-m of Fig. 4 and with the door in closed position.

Fig. 3 is a view similar to Fig. 1 on a larger scale and showing the door nearly closed.

Fig. 4 is a side view of the parts in closed position.

Fig. 5 is a detail view of the joint between the links in locking position.

' In the drawing, a door 1 is indicated as hinged at 3 to the casing 2, the casing having the usual recessed edge portion to receive the door.

According to my invention I' provide a pair of links 4 and 5, which are formed of flat strips of resilient metal of suitable length, width and thickness for the purpose to be explained. Each link has each end por tion thereof twisted or bent into a plane at right angles to the mainr portion thereof, forming an ear 6 on one end of the link v4, the extreme end portion of which is rounded and has a pivot pin 7 in the center thereof which is mounted in a plate 8. The corresponding end of the link 5 also has a similarly formed ear 9 in which a round pin 10 is rigidly mounted, said pin 10 having a head 11 of greater length and width, which is adapted, in one position thereof, to enter the slot 12 of a plate 13, the longer dimension of said head being greater thanthe width of said slot. The opposite end portions 14 and 15 of the links 4 and 5 are also formed similarly to each other, and are superimposed and connected by a pivot 16, andthe end portion 14 is extended perpendicularly to form a. lug or linger 18, which is arranged to engage the edge of the portion 15, and to lock the links against unfolding movement at a point at which they will be held at an obtuse angle to each other.

In practice the plate 13 is lirst attached by screws to the under side of thetop portion of the casing in an approximately predetermined position, the wood directly beneath the slot 12 being slightly grooved to receive the head 11 of the pin 10. The latter is then held in such a position that the longer dimension of the head 11 is coincident with the slot v12 and then it is inserted in the slot and turned so that the under side of the head rests on the inner or upper side of the plate and holds it in position therein, as shown in Fig. 2. The plate 8 is then attached by i screws to the upper edge of the door in such a position that, when the door is fully'clo'sed, the pivot 7 will be beneath the pin 10 and the latter will be in the end portion of the slot 12, next the hinge 3. The angular'position of the head 11 with relation to the link 5 is such that, in all positions of the door, the head will be held in more or less transverse relation to the slot, yso that the pin 10 will be retained therein. One of the purposes of the slot 12 is to permit a certain amount of lost motionk between the pivot pin yielding resistance ofthe lines, Vand as and plate to compensate lor slight 'inaccuracies in setting np. Also, it the oiiset type of hinge shownis used, sov that the axis off the hinge is at one'side ot the line ol the folded position of the links, a certain amounto lateral motion o'the'pivotlO is necessary to permit opening and closing without binding, particularly if the links break towards the hinge in closing, as shown.

In practice the length of the links l and 5 issnchtliat, when they 4are attached to the door and casing approifimateiy tlieposition in which they are designed to be `attached, thefmger V18 will engage the edge .of portion l5 ot the otherlink when theel/or opened to the fullest extent to whicliit is desired to permit it to be opened, as shownintlie nll line position ot' Fig. l, so ,that "further relative swinging movement off .the links `on 4thlefpvot 16 is prevented. In ,thislposition the .links Vwill be locked at an )lotiise angle to each other against turtllif'IlYCmentftowards a position in which thelinlrsare ,in alignment, so that, ittiir- .th'erpressnre is applied to thev door to open it, .gsthe :links are of resilient materiahthe pull ythereonitending to draw them Vinto a straight dine, will. ycanse them to i .be vspr eng' or leXedinto-how Vlike form, towardsv the straight'line between the pivots 7 andi() on the door yand casing, as indicated `in the A,dotted line 4position.ot .Fig l. @peiling movement of the door beyond the open posi- .tionintendedfis only permitted against the l soon Ia's'tlie `torce acting to open the door is removed, the-resiliency ot thellnls will return thelparts-tothelnll line position of Fig. l', With thisarrangement, diere-fore, the greater the extent to whiehfthe door isV opened b'vyond a predetermined position, the greater will be theyielding resistance opposing such opening, so that-'extremeopening movement oit the doorl will beetfectively cushioned.

v'As lthe vdoor is-swnng from closed .to open position .the pin 10' will first bev moved to- .wards the opposite ,end ofthe slot l2 and, ,whenthelinlis become locked against nrther opening movement, .it will be drawn 'back .against the endv of the lslotnezt .the hinge. i A i In 'the ormationzof the pivotally connect- ed enduportions 14, 15,fthe twisted portionsotthe metal are similarly yjterined and arranged, sothat, when the links are swung into folded position, ,the sides thereof will engage from edge to edge. 'Ehe formation of the "links is such that this engagement ends at the point where tlietwisted portion begins and troni this point'the'internicdiate `lesllientfportionsthereofdiverge at a small iacute-angle, as .shgym in he fun lm ,30S-1 -tion otlFig,

y I'Vhenithe links are in this position. the door will not be fully closed ,and in the -finaliclosing movement thereof,

the end portion 6 will be swung over the end portion 9 and one, or both ot' the intermediatev portions of the links `will beflexed and held under tension while the door is closed and latched, as indicated in the dotted line position of ;I `,ig..3.

fUnder these conditions, the links act as an anti-rattler for the door, by holding the latch rmly against its'striker, and, when 'the door is unlatched, they will act to push the doorslghtly ar,fovereoining, oryassisting in overcoming the friction "whichjt'ends to hold door closed whennnlatched,

Vhile the above described construction may'be lvarioiisly inodiiied vwithout s iibstantial effect onthe results seciired and without departing lfrom the 'spirit of iny`inyention, yet 'the vforni shown'is the most--adv'antageons of any of which "I vain at presentv aware, especially Vas Vthe linls maybe readily stamped from 'the' lsheet metal 'and vthe entire device may be mannfactnred Yat small ,eX- pense. s Y

I claim- Y Y gl. In combination withadoor and the oasing to which it is hinged, a y'ieldabl'el stop for limiting the opening movement ofthe door comprising-a swinging karin `pivotally connected yto the door and casing arranged to permit the door to swing between open I 'n and closed positions,saidfarhi having anintermediate resilient portion arranged to bend in the plane inwhich swings, and means to limit the `'swinging Vmovement of the arm, as the door is swung into ope'nposition, at a pointat which itI is obliqne to a right line between kits points of connection with the door and casing, `to canse sai'dportion tobe flexed towands said line nponffur'- ther ,Opening movement Qflthe'deer* ioo ein ,combinaison witte door "the `Gesine t0 which itis hinged, aylllleb Step toiwliniitng the openinginovement oj door, @empreint a' perfOf'kSpvOt-Ql i gether at their adjacent-e ds and ,fesseetively pivoted at their fopposite...ends tofthe 4door and casing, to permit the links to .towardsa position fof relative alignment a's the dooris opened, eacholfsaidli:

a resilient portion between its saidfpiyos `adaptedto yield in thefplaneinhich` the link swings, said linkshaving opp-osltely disposed -'aces adjacent their pivotalco nection arranged to be niovedinto engagement to lock the lin-,ks against A swingingmoiement towards said position, to ,canse 'theinftoloe flexed towards said position von 'fnrtheropening` movement ofthe door; H

3. In combination with a door andgthe casing to whichit is hinged, a pairoflinls y.

pivoted together at adjacent ends and respectively .pivoted lto the door and at their opposite ends,.said links each-having a stop face arranged `to be engaged one with the other at tlieend of the opening movement of the door to limit the relative swinging movement of the links at a point at which said links are held in oblique relation to each other, one of said links being transversely resilient to permit the same to be iiexed towards a positio-n in which the links would be in alignment, on further opening of the door.

4. In combination with a horizontally swinging door and casing to which it is hinged, a pair of links composed of fiat strips of resilient metal having vertically disposed, horizontally resilient intermediate portions, and twisted portions at the ends of said intermediate portions to form horizontal en'd po-rtions, said end port-ions being superimposed and pivotally connected, and the opposite end portions of the links being pivotally connected to the door and casing respectively, said links each having a face adjacent the connecting pivot thereof arranged to engage each other at the end of the opening movement of the door, to lock the links in oblique relation against relativeswinging movement towards a position 'of alignment and to cause said links to be flexed towards said position of alignment on further opening movement of the door.

5. In combination with a horizontally swinging door and its casing, a pair of links pivotally connected at adjacent ends and respectively pivoted at opposite ends tothe door and casing, said links having two pairs of cooperatively engaging faces adjacent their connecting pivot, one pair being arranged to limit the opening movement of said links at a point at which they are at an obtuse angle to each other, and the other pair being arranged to limit their closing movement at a point at which the links are at an acute angle to each other, and one of said links having a horizontally resilient intermediate portion arranged to ybe flexed in one direction on opening movement of the door beyond the position in which the opening movement of the links is limited and to be flexed in the opposite direction during the ytheir connecting pivot, one pair being arranged to be engaged at the end of the opening movement of the door to lock said links at an obtuse angle to each other, against further opening movement and the other pair of faces being arranged to be engaged near the end of the closing movement of the door when said intermediate portions are held at an acute angle to each other, whereby said resilient portions may be flexed in one direction on opening movement of the door beyond a predetermined point and in the opposite direction during the latter portion of its closing movement.

In testimony whereof, I have signed my name to this specification.

GEORGE W. WELLS.

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