US2360095A - Door closing and checking device - Google Patents

Description

cps. ASPINWALL 2,360,095

DOOR CLOSING AND GHECKING"DEVICE Oct. 10, 1944.

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3 Sheets-Sheet 1 Q INVENTOR. Carl 5 (21579 g f Rm 9 Wm QN @S QQQNQ N BY Ada wwwmmwmwx gr Filed Sept. '8, 1941 QN MN.

1 c. s. ASPINWALL DOOR QLOSING'AND CHECKING DEVICE Filed Sept. 8, 1941 -s' sheets-sheet 2 1 INVENTOR.

Oct. 10, 1944. c. s. A-SPINWALL noon CLOSING AND CHECKING DEVICE Filed Sept. 8, 1.941 3 Sheets-Sheet 3 INVENTORL BY CZZ'rZJ dlapzjzwad,

Patented Oct. 10, 1944 DOOR CLOSING AND CHECKING DEVICE Carl S. Aspinwall, Chicago, 111., assignor to Norton Lasier Company, Chicago, 111., a corporation of Illinois Application September 8, 1941, Serial No. 409,935

(Cl. Iii-51) 33 Claims.

The present invention relates to door closing and checking devices and to novel mechanisms for operatively connecting the same to doors.

Among the objects of the present invention is to provide a door closing and checking device which is highly efiicient in operation, is simple and compact in construction, and which readily adapts itself for installation in concealed position with respect to the door.

Another object of the present invention is to provide a novel door closing and checking device and means for connecting the same to a door, which may be applied to doors opening in a single direction or doors of the double acting type which swing open in both directions from closed position.

Another object within the purview of the presentinvention is to provide a novel door closing and checking device and means for connecting the same to a door, so constructed and arranged with respect to said door that the force required to, overcome the spring resistance of the said door closing device is greatest during movement of said door through a limited angular displacement with respect to its normal closed position.

Still another object of the present invention is to provide a novel door closing and checking device and means for operatively connecting the same to the door whereby the movement of the door during limited angular travel thereof into full open position is controlled bythe said checking device to provide an effective backstop or cushioning arrangement for said door into said full open position.

Still a further object of the present invention is to'provide a novel door closing and checking device and novel means for attaching the same to a door as described in the two immediately above paragraphs, in which the said checking device in conjunction with the closing device and means for connecting said devices to the door, operate movement of the door from any of its open positions to its normal closed position.

A still further object of the present invention isto provide a novel door closing and checking device'for a door of the double acting type, and

novel means for connecting the same thereto, and

as] now experienced with such doors at the present time.

to provide for substantially uniform As a further desideratum, the present invention contemplates a novel closing and checking device for a door'a'nd novel means for connecting the same thereto which is positive in action, extremely durable and serviceable, and which is particularly characterized as being positive in its closing action and as having the desirable functional qualities hereinabove set forth.

As another aspect, the present invention involves a novel spring device which may be readily constructed for either type of door as herein suggested, and so constructed and arranged with respect to the door through the medium of novel connecting means that movements of the door into open position as characterized above, are effected.

More particularly, the present invention contemplates a novel door closing device as immediately above described, in combination with a door checking device directly connected to one another and to the door whereby movements of the door into and out of its open positions as above indicated may be readily effected.

The present invention has as a further object the provision of a novel connection between the spring means for the door closing device and the door which renders the resistance of the spring means more difiioult to overcome during the initial movement of the door through limited angular displacement with respect to its normal closed position, thereby providing a door which is positive in its closing movement and which comes to rest without oscillation at its normal closed position.

'The invention also contemplates as an object thereof the provision'of a novel connection between the door closing and checking device which embodies in its construction a pivot mounted on the door in fixed relation to the door pivot, and an operating arm having sliding cooperative relation 'withsaid pivot to provide, in conjunction with the said door closing and checking device, a novel means for producing the desired results as hereinaboVe enumerated. More particularly, the invention embraces within its scope the provision of a novel operating arm constituted in part by a longitudinal slot defined by opposed guide elements, at least one of which is provided with a recess adapted to cooperate with the fixed pivot for holding the door in open position and which may further, if desired, embody at least one guide'element' which is readily detachably secured to the arm for ease and facility in assembling the arm with respect to the pivot.

A still further object of the present invention I 'later'appear and as shown in Figure 1 of the drawings;

sstructure- 2ll; V, r Iherframestructure 28: adjacent the right- Y handside thereof, as viewedjin Figure 1 of the j:

, drawings, includesa horizontal wall 36 having lthefianged openings 38' and 40 and-abov which ismounted thedoor checkingudevice I8; This t doorpcheckingldevice includes the parallelly a e, ranged cylinders .42 and 44- having intercomm'u J) nicatingf chambers which are disposed double is to provide a novel pivot'mechanism for a door which may be advantageously used in association with the novel door closing and checking device as set forth herein.v r i Other objects, features, capabilities and advantages are comprehendedby this invention, as will are inherently possessed v thereby. 7

Referring to the drawings: 1 Figure 1 is a side elevationalview in crosssection of a door closing and checking device and headed pistons formed with operating racks, such as 46, as shown in Figure '1 of the drawings, intermediate and in meshing relation with which is a pinion 48 mounted on an operating spindle 58 which is suitably journaled in the anti-friction bearings, such as 52, in the cylinders and which has a sprocket 54' mounted on the upper end thereof. The spindle 58 is sealed by a packmeans for connecting the same to a door, both 5 constructed in accordance withthe present invention; V V r V Figure 2'is a top plan viewof thedevice shown in Figure l of the drawings;

Figure 3, is a bottomvplan 'view of Figure 4 is a view partly in plane and partly ;in section of the connecting means of the device 3 shown in Figure 1 and taken in the plane represented by the line 4+4 of that figure;

Figure ,5 is a fragmentary bottom plan th device view ofthe'device of'Figure- 1' of the drawings, showing" the-position of certain mechanism thereof 3 '-when the doorvis in full open position; and

Figure 6 is a diagrammatic'view of the door and connecting means and the relation of one :to' the other in several positions ofthe door.

Referring .now more in detail to the drawings, a door closing and checking device made in 'accordance with the present invention "and genjerally referred toas 2 is shown mounted in a recess' l in the'lintel "6 of a door framewhich ,includesopposed jambs such as 8 and a conven, tional sill (not disclosed) in opposed relation to the lintel 6. The door closing and checking de- -vice 2 selected to illustrate the present invention is shownjasbeing' connected to a door ll] of the double acting type through the medium of con- -necting means generally represented as l2. The

door In is mounted in theidoor frame by opposed V pivots, one of vwhi'ch as represented at I4, is of novel construction, which will" be hereinafter de- 1 scribed more in detail.

Thedoo'r closingand checking device comprises aclosing mechanism or device, generally referred j to'as 'lfigand 'a doorvchecking mechanism or y 1 device, "generally'referredto as I8, mounted as willibe more fully disclosed hereinafter, within S the frame 20 'constitutinga housing for various mechanisms and. forsecuring the same in flush relation to the linte16. The frame structure 28 i may be formed in part as a casting .22 flanged las' at 24 and 26 having suitableopeningssuch as 28., to receive securingim'eans ,for attaching ing gland as at 56 to prevent loss of fluid Which is provided within the fluid cylinders 42 and 44 Control of the door I0 during certain of its movements is efiected through and by virtue of adjustable valve elements 58, 60, 62 and 64 which are provided with slotted heads, the first two of which project into, the opening formed by the flanged structure 38 and the latter two of which project into the opem'ng formed by the flanged structure 48, for accessibility when. the plate 32 is removed. These valve elements regulate the fluid orifices of the ducts communicating with 'the fluid chambers of the cylinders to regulate the movements of the door, which-Will be here inafter more, fully described.

To the left of the door checking device I8, as viewed in Figure 1 of the drawings, the frame structure 20 is provided with a horizontally disposed shelf; or wall 66 having the flangedopenings 68, 78 and 12 through which project the spindles M, 76, and 78; respectively, In opposed relation to the wall or shelf 66 is a wall 88 removably secured to the wall structure 82 of the frame 28 by means of screws, such'as 84, and which is formed with flanged, openings 86, 88'

, and--90 into which project the spindles 14, 16

and f|8,respective1y. V

The spindle l4 and 1B constitute operating shaftsfor spring devices 92 and 94, respectively, and have their upper ends of reduced diameter asat 96 journaled in the flanged structure .de-

finin the openings 86 and 90, respectively, of

thep1ate80p- The lower ends of the spindles I4 and 18 are journaled in the flanged structure defining the openings 68 and 12 through the anti-friction thrust bearings 98 and I00, respectively, which are retained against upward displacement by the spring rings, such as I02, fitting peripheral grooves formed in the spindles adjacent said antifriction thrust bearings. The spindles l4 and 18 likewise have their opposite ends of reduced diameter, as at I84, upon which are mounted th ratchets I86 and I88, respectively. t q The sprin devices 92 and 94 are adapted to resist movement of the door in oppositedirections inasmuch as the door is of the double act- ,ing type, and said spring devices have one end the'said' frame tothelintelfi. 'Tofacilitateassembly' and replacement of parts, the said casting connected to the spindles and the other endconnected to the wall frame structure 82, all as is :2-2'isclosedby aremovable cover, such as 30, l

to seal the device at the topland at one end, ,Furthermmethe finishing plate 32 may be pro;

' vided and secured by, attaching means engaging in th openings, such, as 3 4, for providing a fini ishednflush surface along the ,lower' edge o f the lintel ,6 and toilikewis'e completely conceal the variousfmechanisms on the under side of'said conventional in theart.

The spindle 16 disposed between th spring devices 92 and 94 has its uppervend journaled in the flanged structure forming th opening 88 by means of the anti-friction bearing H8," the said spindle extending downwardly through'the opening 18 and beingjournaled in theflanged structure forming the opening wry the anti friction bearing I I2. The said spindle 16 is positioned'at its lower-end inv respect to its journal mountings by means of thespring rin I I4 abutting the 'antifriction bearing H2, which s? mounted within a suitable groove provided in the spindle 16- at that point. The spindle I6 is positioned 'at its upper end by a sprocket H6 which: is mounted thereon and which abuts the inner race ring of the anti-friction bearing 1 l0,

th said sprocket II6 being connected to the sprocket 54 by a flexible chain I I8.

The spindle 16 further has mounted upon its lower end a cross bar I20 provided with the opposed hooks I22 and I24 adapted to interengage the end rings I26 and I28 of flexible chains I30 and I32, respectively. The flexible chains I30 and I32 embrace the ratchets I06 and I08, respectively, and have their end links, such as I34 and I36, formed with lugs, such as I38 and I40, engaged within recesses or notches, such as I42, extending radially inwardly from the periphery of the ratchets and being spaced angularly about said periphery whereby a connection is efieoted between the cross bar I20 and either of the spring devices 92 and 64. The lugs I40 of the flexible chains I30 and I32 are operative to provide the connection above described, whereas the lugs I38 of these flexible chains are provided to maintain the flexible chains in operative position with respect to the ratchets I 06 and I 08 when either one of the hooks I22 or I24 is angularly displaced with respect to its ring I26 or I28, such as shown in Figure of the drawings. Spring tension of the devices 82 and 94 is maintained by the stops, such as I44, adjustable through the medium of the screws I46 and which engage the end links I34 of flexible chains I30 and I32 when the cross arm or bar I20 is in normal position, as shown in Figure 3, which position corresponds to the normal closed position for the door I0.

In order to adjust the spring tension of the devices 92 and 94, the spindles 14 and 18 are formed with non-circular openings, such as I48, adapted to receive a tool whereby the said ratchets may be turned angularly to any adjusted position and to permit placement of the flexible chains I30 and I32 in any adjusted position with respect thereto, thus providing means for the ready adjustment of the spring devices 92 and 94. Such adjustment can take place upon removal of the finishing plate 32.

The connecting means I2 is mounted in substantially flush relation to the top edge of door I0 in a recess I50 and comprises a part of an operating arm I 52 provided with a slot I54 in embracing and cooperative relation to a roll I56 mounted upon the stud pin I58, which in turn is connected to the supporting bar I60 having one end formed with the bearing block I 62'.

As more clearly shown in Figure 4 of the drawings, the operating bar of the present assembly is of multi-part construction comprising the hinge element I64 connected to the lower end of the spindle 16 and to which are removably connected, by the screws I66, opposed guide elements I68 and I forming the slot I54 and which cooperate with the roll I56. The guide elements I68 and I16 are removably connected adjacent their opposite ends by means of the screws I12 to a spacer block I14. Furthermore, in order to assure safety in operation of the operating arm I52, the said guide elements I68 and I10 are each provided at their inner end with a securing lug I16 received within recess I18 formed in the pivot block I64.

In order to hold the door in its full open position, as will be more clearly described hereinafter, the guide elements I68 and I10 are formed with opposed recesses, such as I1I, communicating with the slot I54 and which cooperate with the roller I56 when the same is moved into the recesses as the door is moved into its full open position.

The pivot I4 for the door I0 comprises a housing I which, in the present instance, is cast integral with the housing structure 20 and which has a longitudinal bore I62 open from the lower housing in alignment with a similar opening formed in the plate 32. Mounted within the bore I82 is a plunger I84 spring-pressed downwardly through the medium of the coil spring I86 disposed in abutting engagement at one end of the plunger I84 and at its other end with the housing I80.

This plunger has mounted therein a laterally extending pin I88 extending through a slot I90 provided in the side of the housing I80 and which slot limits the downward movement of the plunger I 84 to maintain the same in assembled relation within said housing. The pivot for the door IE) is completed by an anti-friction bearing assembly I32 mounted inthe bearing block I62 and which is adapted to receive the reduced end I94 of the said plunger I84 to hold the door in assembled relation to the door frame. Assembly and disassembly of the plunger I84 with respect to the door are effected by a tool insertable through the opening I96 formed in the flange 26 inalignment with the pin I88 which permits the plunger to be moved in the housing I80, thus facilitating the erection and removal of the door of the drawings showing the door and the operating arm for the door closing and checking device in various positions. As is evident from Figures 1 ta 5, inclusive, the mechanism hereinabove described is designed for a door. of the double acting type which, .in Figure 6, is diagrammatically shown as being pivoted as at I94 and which door is in its normal closed position as represented by line I96 and accordingly is adapted for movement angularly to either side of its center line position I68.

As hereinbefore indicated, novel results are accomplished in accordance with the present invention because of the particular lever system through which the door is connected to the door I closing device I6 and to the door checking device I8. Such results are accomplished in part by the lever system as shown in Figure dot the drawings and in part by the lever system as shown in Figure 5 constituted by the cross-arm I20 and the flexible chains I30 and I32 connecting the same to the spring devices.

By reference to Figure 6, it will be clearly apparent that, considering the door I0 as part of this system, force applied to or delivered from the roller I56 through the medium of the door acts through a fixed lever arm defined by the distance between the roller I56 andthe pivot I4. On the other hand, however, since the roller slides within the slot I54 of the arm I52, any force applied to or delivered from the roller through the medium of the operating arm I52 acts through a variable lever arm defined by the distance between the roller I56 and spindle 16 which door.

in turn is dependent upon the position, of the Accordingly, due to the lever system above described, force applied to the door necessary to overcome the resistance of the spring devices is a maximum when the door is in its normal closed position I98 and is a minimum when the door is inrits full open position (except for theflbackcheck arrangement: to be later described). In

the present illustrative example of the invention, {the roller I56 is fixed in position with respect to pivot. I4 and spindle I6 so that the force required to overcome the resistance of the spring units is greatest during movement of the door through substantially 1 to ,15 degrees from normal'closed position, This is quite evident when it is observed" that the arm I52, as shown in the. door ,position as represented at A of Figure 6, has traveledahead of the door a considerable angular distance during movement of this door from its normalclosed position. From the door position as represented at A to the door position repre- {sented at B, less force is required to overcome the spring resistance due to the increase in the lever arm betweenthe roller I56 and the spindle I6,

. as represented by, the diagram of door position 13. This is apparent from the drawings; which show that forangular movement of the door between positions A and B, the operating arm has moved. angularly through substantially the same distance. It'is also apparent from the "drawings'that the forcenecessary to overcome thelspring resistance decreases between positions A and B between which, angular displacement of the doorv and the operating arm I52 is substantially"equal.; However, in the present device, after the-door has swung to within -10 degrees of its full open position,'the fluidcontrol device I8 becomes effective to check the door swing during. its movement into full open position at C.

I Operatingin conjunction with the connecting arm I52 and roller I56 to e ifect the resultshereinabove described is the crOSs-arm' IZEI and the device when the door is in its normal closed posiftion is. not only due to the minimum lever ar'rn' provided at that time between; spindle I6 and roller I50, but isalso due-to the fact that the effective leverarm for the connection of the fcross arm I to either of the flexible chains I 7 and I32 is a maximum. Due to the disposition of the cross-arm I20-with respect to the chains :I30 and I32, the effective lever arm betw'een the cross-arm I20 andthe spring devices 92and 94 decreases as the cross-arm I20 is angularly moved from a position corresponding ,to the normal :closed position of the door to its normal full open positionjas willbe quite apparent from Figures 3 and 5, Asshown' in Figure 5, for examplathe cross-arm I20 is displaced .90 degrees from its position in Figure 3,, corresponding to the posi- This' lever arm varies from a minimum :when the door is at its normal closed position,

as. represented at I98, to its full open position, as represented at C;

aecmoes nectin-g the-door to the door closing and checking device, as hereinabove-described, is-d-ue in part to the particular connection between 16 and the door I0 and in part due to the particular arrange:

ment of the cross-bar I20 and either of the chains I30 anduI32.

When the. door is moved into the position as I represented at C in Figure 6 of the drawings,

roller I56 engages one of the slots I'II the door in that position, V

The mechanism hereinabove described cooperates with'the fluid control means I8 to .cause to ;hold

substantially'uniform movement'of the door from 7 its full open position to itsnormal closed position. As shown for example in Figure 6 of the drawings, valve 60 is adjusted to produce this uniform movement. When the door I0 is swung to open position in the opposite direction'from that illustrated in Figure 6, the valve member 62 is properly adjusted whereby the fluid control 'means I8 cooperates with the other mechanisms previously described to produce a uniform movement of the door into closing position.

Furthermore, back checking of the door during its movement into full open position represented in Figure Got the drawings is controlled by ad- I justable valve member 64,.while back'checking v of the door during its movement into open posi-1 tion.in the opposite direction is controlled by f adjustable valve member 58. With the mechanisms hereinabove type as illustrated in the drawings will move uniformly from. any open position to its normal closed position, as represented byline I98, and

. come to a positive stop without oscillation in the opposite direction. Furthermore because of the particular. arrangement of the spring mechanism 3 and the meansconnecting the same to'the door,

there is a buildingup of force to a' maximum when the door is in its normal closed position, at

which time the operating arm I52 is on dead center with respect to the door.v This is a highly desirable characteristic in a door of this type in particular disposition thereof with respect to the .ratchets I06 and I08 and the flexible chainsII30' and I32 associated therewith. 7 Maximum force required to overcomethe resistance'of the spring that positive closing action isassuredeven though a strong draft may be blowing'through the door opening at the time the same is closed position.

Although thejinvention has been described in connectionwith a door of the doubleacting type,

f it is to be understood, however, that the'same is not limited thereto but'may' be embodied a door assembly of the single acting type.

- thermore, the invention is of such a scope as to comprehend a door closing and checking device and means connecting the same to the door which embodies the novel features and characteristics thereof and which isadapted for installation: in

association with the door sill for connection to a doorof either the single or double acting'type.

7 While I have herein described and upon the drawings shown an illustrative embodiment of the :invention, it is to be understood that the invention is not limited thereto but may compre hend other constructions, arrangements of parts,

details and features'without departing from the spirit of the invention.

Iclaim: H r o l; Ina door closingandchecking device adapted to be mounted in the lintel of a door frame,

T said device comprising a fluid control means,-a spring mechanism, means connecting said fluid control means and said spring mechanism the door hinged to said frame including an operating arm pivoted to said door, said connecting means described in proper adjustment, a door of the double acting moved into its having means so connected to said spring mechanism and said door through said pivotal connection that the force required to overcome the resistance of said spring mechanism during movement of said door to open position is a maximum at its normal closed position.

, 2. In a door closing and checking device adapted to be mounted in the lintel of a door frame, said device comprising a fluid control means, a spring mechanism, means connecting said fluid control means and said spring mechanism to a door hinged to said frame including an operating arm pivoted to said door, said connecting means having means so connected to said spring mechanism and said door through said pivotal connection that the force required to overcome the resistance of said spring mechanism is greatest during limited angular movement of the door from its normal closed position to open position.

3. In a door closing and checking device adapted to be mounted in the lintel of a door frame, said device comprising a fluid control means, a spring mechanism, means connecting said fluid control means and said spring mechanism to a door hinged to said frame including an operating arm pivoted to said door, said connecting means having means so connected to said spring mechanism and said door through said pivotal connection that the force required to overcome the resistance of said spring mechanism during movement of said door to open position is a maximum at its normal closed position, and said fluid control means having means effective through said connecting means for back checking said door during limited angular movement thereof adjacent and into its open position.

4. In a door closing and checking device adapted to be mounted in the lintel of a door frame, said device comprising a fluid control means, a spring mechanism,'means connecting said fluid control means and said spring mechanism to a door hinged to said frame including an operating arm pivoted to said door, said connecting means having means so connected to said spring mechanism and said door through said pivotal connection that the force required to overcome the resistance of said spring mechanism is greatest during limited angular movement of the door from its normal closed position to open position, and said fluid control means having means effective through said connecting means for back checking said door during limited angular movement thereof adjacent and into its open position. 5. In a door closing and checking device adapted to be mounted in the lintel of a door frame, said device comprising a fluid control means, a spring mechanism, means connecting said fluid control means and said spring mechanism to a door hinged to said frame including an operating arm pivoted to said door, said fluid control means having means for controlling said connection to provide for substantially uniform closing movement of said door, and said connecting means having means so connected to said spring mechanism and said door through said pivotal connection that the resistance of said spring mechanism to a force tending to open said door is greatest during limited angular movement of said door into closed position.

6. A door closing and checking device comprising a fluid control means having an operating spindle, spaced spring devices, an operating spindle between said devices adapted to be connected to a door, means connecting said spindles, and means operatively associated with said secondnamed spindle and directly connected to said spring devices.

7. A door closing and checking device comprising a fluid control means having an upwardly extending operating spindle, spaced spring devices, an upwardly extending operating spindle disposed between said devices adapted to be connected to a door, flexible means connecting said spindles, and means operatively associated with said second-named spindle and directly connected to said spring devices.

8. A door closing and checking device comprising a fluid control means having an upwardly extending operating spindle, spaced spring devices, an upwardly extending operating spindle disposed between said devices adapted to be connected to a door, flexible means connecting said spindles, a cross-bar mounted on said second-named spindle, and flexible means for connecting said cross-bar and said spring devices.

9. A door closing device comprising spaced spring devices provided with notched operating ratchets, an operating spindle disposed between said devices adapted to be connected to a door, said spring devices being adapted to resist movement of said door in opposite directions, a crossbar mounted on said spindle, flexible means for connecting said cross-bar and said spring devices, said flexible means being mounted on said ratchets and having lugs engaging in certain of said notches for operatively positioning said flexible means with respect to said ratchets, and stop means for said devices adapted to cooperate with said flexible means.

10. A door closing and checking device comprising a fluid control means having an operating spindle, a spring device, an operating spindle disposed laterally f said spring device adapted to be connected to a door, means connecting said spindles, and means directly connecting said lastnamed spindle to said spring device.

11. A door closing and checking device comprising a fluid control means having an operating spindle, a spring device, an operating spindle disposed laterally of said spring device adapted to be connected to a door, flexible means connecting said spindles, an operating bar connected to said last-named spindle, and flexible means connecting said bar and. said spring deoperating spindle, a fixed pivot on a door hinged to said frame, and an operating arm for said door closing device connected adjacent one end to said spindl and having sliding cooperative relation with said pivot.

14. In a door closing device adapted to be mounted on a door frame, said device comprising a spring mechanism, said device having an operating spindle disposed laterally of said spring mechanism, means providing a varying power connection between said spindle and said spring mechanism, a fixed pivot on a door hinged to said frame, and an operating arm for said door closing device connected adjacent one end to said spindle and having sliding cooperative relation with said pivot.

15. In a door closing device adapted to be mounted in the'lintelof a door frame, said defvice comprising spacedspring mech'anisms, said device having an operating spindle disposed between said mechanisms and depending from said lintel, means for connecting said spindle to said mechanisms, a fixed pivot on a double acting door'hinged to said frame, and an operating cooperative relation with said pivot.

16. In a door closing and checking device adapted to be mounted in the lintel of adoor frame, meansconnecting said device to a door hinged to said frame, said means comprising an operating spindle depending with respect to said lintel,-a fixed pivot on said door, and an operating arm connected adjacent one end to said spindle-and .havingsliding cooperative relation with saidpivoti,

- 1'7-. In a door closing andphecking device 7 adapted to be mounted in thelintel'of a door 1 framejmeans connecting's'aid device to a double acting door hinged to said frame, said 'means comprising a flxed'pivot on saiddoor, an operat- 'frame, "said, device com-prising a' fluid control means having an operating spindle, a spring mechanism, an operating spindle for said spring mechanism disposed'laterally thereof, means for connecting said spindles, means connecting said last-namedspindle to said spring mechanism,

and means connecting said last-named spindle "to a doorhinged' toisaid frame, said means comprising a fix'ed-pivot on said door, and an operating armiconnected adjacent one end to said spindle and having sliding cooperative relation with said pivot.

1 -19. In a door closing and checking device adapted to be mountedon a door frama-said device comprising a fluid control means having said spring 'mechanisms being adapted to resist movement of a door in opposite directions'which is hinged to said 'frame, anoperating spindle for said spring mechanisms disposed between the same, means for connecting said spinclles, means connecting said last-named spindle to said spring mechanisms, and means connecting said lastnamed spindle to said door, said means compris inga fixed pivot on said door, and an operating I arm-connected adjacent one end to said spindle ndh'avin sliding cooperative relation with said pivot.

20.'In a door closing and checking device I "adapted to be mounted on a door frame, said device comprising a fluid control means having fan operating spindle, a spring mechanism, an

operating spindle for said spring mechanism,

, means connecting said spindles, means connectling said last-named spindle to said spring mech- 'anism, a fixed pivot on a-door hinged to said frame, and means for connecting said last-named spindle'to said doorcomprising an operating arm fixedto said last-named spindle having sliding cooperativerelation with said pivot, said connec tionbetween said last-named spindle and spring mechanism having means cooperating with said 7 arm and its connection to said door whereby the ing arm for said door closing device connected adjacent one end to said spindle and having slidadapted to be mounted on a door frame, said device comprising a fluid control means having open pOSitlOIl'."

force required to o'v'er'come the resistance of said spring mechanism is greatest during movement of said door through a limited angular displace inentwith respect to its normal closed position, and said fluid control means having means effec tive through its connection to said last-named spindle for back checking said door during limited angular movement thereof adjacent and into its 21'. In a door closing and checking device an operating spindle, a spring mechanism, an

anism, a fixed pivot on a door hinged to said frame, and means for connecting said, last-named spindle tosaid door comprising an operating arm fixed tosaid'last-named spindle having s liding* during movement of-said door through'a limited angular displacement with respect to its normal closed position; and said fluid control means having means effective through its connection to said last-named spindle to provide for substantially uniform closing movement of said door;

22. In a door closing and checking device adapted to be mounted on a door frame, said device comprising a fluid control means having an operating spindle, a spring mechanism, an

operating spindle for said spring mechanism, means connecting said spindles, means connecting said last-named spindle to said spring mechanism, a fixed pivot on a door hinged-to said frame, and means -for connecting said last-named spindle to said door comprising an operating arm fixed to said last-named spindle having sliding l cooperative relation with said pivot, said connecoperating spindle, spaced spring mechanisms,

tion between said last-named spindle and spring mechanism having means cooperating with said arm and its connection to said door whereby the force required to overcome the resistance of said angular movement thereof adjacent and into its 7 open position and to provide for substantially uniform closing movement of said door.

23.,In a door closing device adapted to be mounted on a door frame, said device'comprising a spring mechanism, an operating spindle for said spring-mechanism, means connecting said,

7 spindle to said spring mechanism, a, fixed pivot on a, door hinged to said frame, and means 'for connecting said last-named spindle to said door comprising an operating arm fixed to said spindle having sliding cooperative relation with said pivot, said connection between said spindle and spring mechanism having means cooperating with said arm and its connectionv to said door. whereby the force required to overcome the resistance to said spring mechanism is greatest during movement of said do'or through alimited angular displacement with respect to its normal 7 closed position. a

24. In a door closing and checking device adapted to be mounted on a door frame, said device comprising a fiuid control means having an operating spindle, a spring mechanism, an operating spindle for said spring mechanism, means connecting said spindles, means connecting said last-named spindle to said spring mechanism, a fixed pivot on a door hinged to said frame, and means for connecting said last-named spindle to said door comprising an operating arm fixed to said last-named spindle having sliding cooperative relation with said pivot, said connection between said last-named spindle and spring mechanism having means cooperating with said arm and its connection to said door whereby the force required to overcome the resistance of said spring mechanism is greatest during movement of said door through a limited angular displacement with respect to its normal closed position, and said arm having means cooperating with said door pivot for holding said door in open position.

25. In a door closing and checking device adapted to be mounted on a door frame, said device comprising a fluid control means having an operating spindle, a spring mechanism, an operating spindle for said spring mechanism, means connecting said spindles, means connecting said last-named spindle to said spring mechanism, a fixed pivot on a door hinged to said frame, and means for connecting said last-named spindle to said door comprising an operating arm fixed to said last-named spindle having sliding cooperative relation with said pivot, said connection between said last-named spindle and spring mechanism having means cooperating with said arm and its connection to said door whereby the force required to overcome the resistance of said spring mechanism is greatest during movement of said door through a limited angular displacement with respect to its normal closed position, said fluid control means having means effective through its connection to said last-named spindle for back checking said door during limited angular movement thereof adjacent and into its open position, and said arm having means cooperating with said door pivot for holding said door in open position.

26. An operating arm for a door closing'and checking device, comprising a member having means adapted for connection to said door closing and checking device and a longitudinal slot defined by oppositely disposed guide elements, at least one of said elements having a recess communicating with said slot for cooperation with a door pivot for holding said door with respect to said arm.

27. An operating arm for a door closing and checking device, comprising a member having means adapted for connection to said door closing and checking device and a longitudinal slot defined by oppositely disposed guide elements, at least one of said elements having a recess communicating with said slot for cooperation with a door pivot for holding said door with respect to said arm, and means for removably securing at least one of said elements in position.

28. An operating arm for a door closing and checking device, comprising a member having means adapted for connection to said door closing and checking device and a longitudinal slot defined by oppositely disposed guide elements, and means for removably securing at least one of said elements in position.

29. In a door closing and checking device adapted to be mounted on a dOOr frame and having an operating spindle, a fixed pivot on said door, and an operating arm connected adjacent one end to said spindle and having an elongated slot defined by oppositely disposed guide elements having guiding relation with said pivot, at least one of said elements having a recess communicating with said slot adapted to cooperate with said door pivot for holding said door in open position.

30. In a door closing and checking device adapted to be mounted in the lintel of a door frame, means connecting said device to a door hinged to said frame, said means comprising a fixed pivot on said door, an operating spindle for said device extending downwardly with respect to said lintel and being disposed intermediate said fixed pivot and the pivot for mounting said door, and an operating arm connected adjacent one end of said spindle and having sliding cooperative relation with said pivot.

31. In a door closing and checking device adapted to be mounted in the lintel of a door frame, means connecting said device to a double acting door hinged to said frame, said means comprising a fixed pivot on said door, an operating spindle for said device extending down- Wardly with respect to said lintel and being disposed intermediate said fixed pivot and the pivot for mounting said door, and an operating arm connected adjacent one end of said spindle and having sliding cooperative relation with said Divot. v

32. In a door closing and checking device adapted to be mounted in the lintel of a door frame, means connecting said device to a door hinged to said frame, said means comprising a fixed pivot on said door, an operating spindle for said device extending downwardly with respect to said lintel and being disposed intermediate said fixed pivot and the pivot for mounting said door, and an operating arm connected adjacent one end of said spindle and having sliding cooperative relation with said pivot, said spindle, pivot and arm being in the plane of said door when the same is in closed position.

33. In a door closing and checking device adapted to be mounted in the lintel of a door frame, means connecting said device to a double acting door hinged to said frame, said means comprising a fixed pivot on said door, an operating spindle for said device extending downwardly with respect to said lintel and being disposed intermediate said fixed pivot and the pivot for mounting said door, and an operating arm connected adjacent one end of said spindle and having sliding cooperative relation with said pivot, said spindle, pivot and arm being in the plane of said door when the same is in closed position.

CARL S. ASPINWALL.

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