US2000574A - Door controller - Google Patents

Description

A. J. BAYLEY DOOR CONTROLLER May, 7, 1935.

Filed Dec. 5, 1932 IINVENTOR AETHZ/Yi JEAYLEK ATTORNEY Patented May 7, 1935 PATENT? OFFICE.

2,000,57 noon CONTROLLER Arthur J. Bayley, Milwaukee, Wis.;- Allen- A.

Bayley' administrator of saidjArthurltayley,

deceased Application-December 5,

1932,. Serial. Nb; 645,705

9--Gl'ai ms. (01. 139-49) 1 This invention relates to door controllers. Modern door closers are not infrequently equipped with devices-for retaining thedoor in openposition. Such. devices, as heretoforedesigned, are ordinarily of the friction type, so that the door is rather insecurely retained-.and in general such, devices are incapable of retaining the door in more than one particular position.

One object of the present invention is the provision of an improved retainer device for-door closers which, by asimple manipulation of: the door, may be rendered effective to securely hold the door inany of a multiplicity of positions or released to permit the door to close: under the action of the closer.

Another object is; the provision: in. a. retainer device of the character mentioned" of temperature responsive means for automatically: releasing: the device, to thereby permit the door to closeinthe event: of fire. i

Other more specific objects and-advantages; will appear'from. the following'description; of an, illusr' trative embodiment'of the present: invention.

"In the; accompanyingdrawingr- Figure 1 isa. top plan. view of: a door'closer equipped with a retainer device constructed in accordancewiththe. present; invention- Fig. 2 is a side elevation of the retainer device.

Figs. and5-are top plan; views of the. retainersdev-ice' shown inFig. .l with: the partsrtherer otin; difierent: operating positions;

Fig; 6- is a. sectional: View onthe line. 6E of Fig; 2. v

The; door closer shown comprisesv a; conventionalhousing in, fixed to the door H, andsupporting. the usual spring actuated spindle I2, which is. connectedto the door frame t3 through the actuator arm l4, loop arm l5, linkr'lfi and bracket I1: 1

In this instance the actuator; arm l4 is;fixed to: the spindle I2. through an. adapter hub; I182, designed to fit that particular spindle, and removabl'y fixed to the end of the arm; and the arm I4 is rockably connected to the loop arm 5, preferably in a manner about to bedescribed, so that the spindle and arms normally function to close the door in the usual manner.

In, this instance the loop arm I5 is provided with. an end yoke I9 rockably mounted upon a horizontal hinge pin carried by. a head 2!. Asquare, headed bolt 22, anchoredv in the head 2|, extends. downwardly through a ratchet wheel 23 and, through the. outer end. of a rocker plate 24, the bolt being tensioned by an appropriate spring 25-interposed between the plate 24 and nuts 26. on the bolt. I

The ratchet wheel 23: is additionally connected to the head 2.! preferably through 'a,v fusible link 21 which normally prevents relative rotation between the ratchet wheel and head. In this instance opposite ends oithe link 21s are fixedto ears 2-8.- and 2S projecting from the head and ratchet wheel, respectively.

The frictional engagement between the plate 24; and-ratchet wheel 23 tends to resist relative rotation therebetween, and the degree of this resistance may of. course be regulated by adjustment of the-nuts 26. l I

. 'I'heplate 24 is rockably connected with the actuator arm l4 through appropriate means, such as a stud 30 whichextendsdownwardly from. an intermediate portion of the plate into anappropriate hub 3| on the end of the arm I4. The plate 24 thus constitutes a rockable extension, of the actuator arm. I I The.- rocking action between the plate 24 and actuator arm-,- I4 is limited and controlled by a link 32, which is rockably connected, as at 33, to the inner end of: the plate. An upright pin 34, f xed to the arm, projectsinto and coacts with an irregular camslot 35 formed in the link. The free end of the; link is provided'with angular cam faces 36 and 31- which coact with a spring 38 carried, by the arm I4 in a manner to be later described. a r

The rocker plate 24 carries a pawl 39.- pivoted at 4% and havinga tooth 4| for engagement with the ratchet wheel 23. The. pawl is controlled by a pin "which projects upwardly from the arm l4 through an appropriate slot 43in the plate 24.

The pin 42 is. engaged withv and between a tail 44 onthe pawl and a spring 45 fixed to the pawl.

The arrangement is such that opening movement of 'the'door causes the arm 14 to swing counter-clockwise with respect to the arm I5 and ratchet wheel 23'. Since the rocker plate 24 is-frictionally restrained against rocking movement with respect to the ratchet Wheel 23 and arm I 5, the arm l4 swings counter-clockwise with respect to the plate 24 during the initial opening movement of the door; and the pin 42, carried by the arm l4, acts on the tail of the pawl 39 in such direction as to pull the, tooth 4| thereof away from the ratchet wheel, and at the same time the pin 34, also carried by the arm l4, moves into the outerend46. of the slot 35 in the link 32, causing the parts to assume the position shown in Fig. 3.

During continued opening. movement of, the

door, the plate 24 and arm l4 swing, as a unit, in a counter-clockwise direction with respect to the arm 15 and ratchet wheel, the pawl 39 and link 32 retaining their relative positions, as indicated in Fig. 3. In this position of the link 32 the spring 33 bears squarely against the cam face 31 of the link.

Then if the door is released and permitted to move freely toward closing position, by the action of the closer, the arm i4 first swings clockwise with respect to the plate 24, so that the pin 34 leaves the outer end 43 of the slot 35 in link 32 and, following the wall 4'! of the slot, engages a stop shoulder 48 in the slot, as indicated in full lines in Fig. 4. During this actionthe pin 42, acting on the spring 45, shifts the pawl 39 slightly but not far enough to effect engagement of the tooth 41 with the ratchet wheel; The engage ment of the pin 34 with the stop shoulder.48 prevents further relative movement between thearm I 4 and plate 24, so that thereafter the arm 14 and plate 24 swing, as a unit, in a clockwise direction with respect to the ratchetwheel and arm l5, and the door completes its closing movement.

If it be desired, however, to secure the door in open position, the closingmovement of the door is manually interrupted, and thereafter the door is given a slight opening movement from the point of interruption, followed by a closing movement. This sequence of operations shifts the tooth of the .pawl 39 into engagement with the ratchet wheel 23, in a manner about to be described, so that the plate 24 and-arm l4 are locked against clockwise movement with respect to the ratchet wheel and arm 15, thereby causing the door to be locked in'the position in which this engagement occurs. V

As above pointed out, it will be again noted that during initial closing movement of the'door the pin 34 moves from the outer end 46 of the slot 35 into engagement with the shoulder 48, and, as it follows the wall 41 of the slot, it shifts the link i 32 slightly, so that the spring 38 ultimately bears against the high point 49 between the cam surfaces 36 and 3'! of the link in such manner as to urge the link toward the right. (See Fig. 4.) The spring 38 is ineffective to tilt the link 32 however, during closing movement of the door, by reason of the engagement of the pin 34 with the shoulder 48. But when the closing movement of the door is interrupted and the door given a slight opening movement, the pin 34 withdraws from engagement with the shoulder and the link 32 promptly swings'into the dottedline position of Fig. 4, under the action of the spring 38. Then when the door is again released and permitted to continue its closing movement, the arm l4 swings clockwise with respect to the plate 24 until the pin 34 engages the inner end 59 of the slot 35. (See Fig. 5.) During this further relative movement between the arm l4 and plate 24, the pin 42 acts against the spring 45 on the pawl so as to urge the tooth of thepawl into engagement with the ratchet'wheel 23. When this engagement occurs the arm I4 and plate 24 are locked against further clockwise'movement with respect to the ratchet wheel 23 and arm [5, and the door is thus securely held against further closing movement.

Thus by proper manipulation of the door the ratchet mechanism above described may be rendered effective to positively secure the door against closing movement in any of a large number of positions between its fully open and completely closed position.

To release the door from a held position, the

ative to the arm I5.

door is merely swung further open until, by the consequent counter-clockwise movement of the arm l4 relative to the plate 24, the pin 34 has again been shifted into the outer end 4'! of the slot 35 in the link 32, and until the pin 42, act- .ing on the tail 44 of the pawl, has withdrawn the pawl from engagement with the ratchet wheel 23. The pawl 39 and link 32 are thus returned to the positions shown in Fig. 3, and the door, when manually released, is free to efiect a complete closing movement in the manner previously described.

7 Provision is also made for automatically releasing the doorfrom a hold position so as to permit prompt closing thereof in the event of fire. In this instance this is accomplished by the use of the fusible link 21, which normally holds the ratchet wheel 23 against rotation rel- If the link 21 is destroyed by the heat of a fire, the ratchet wheel 23 is of course released and the arm I 4 is then free to swing with respect to the arm l even though the pawl 39 and ratchet wheel are engaged.

The device hereinabove described is shown applied to a right handed door, but it may be readily converted for use on a left handed door by connecting the fusible link 21 to a second ear 29' on the ratchet wheel instead of to the ear 29; by inverting the pawl 39, link 32, and spring 38; by transferring the pin 34 into a second hole 34 in the arm I4; and by similarly transferring the pin 42. 7

Various changes may be made in the embodiment of the invention hereinabove specifically described without departing from or sacrificing the advantages of the invention as defined in the appended claims.

I claim:-

1'. In a door controller the combination of a door closer, door retainer mechanism, means responsive to manipulation of the door for rendering said mechanism effective to lock the door against closing, said mechanism being releasable in response to other manipulation of the door, and temperature responsive means for rendering said mechanism ineffective to thereby render said closer effective to close the door in the event of fire.

2. In a door controller the combination of a door closer, door retainer mechanism operable to lock the door against closing in any of a plurality of positions of the door, means responsive to manipulation of the door to render said mech-' anism effective in any of said positions, said mechanism being releasable in response to other manipulation of the door, and temperature re sponsive means for rendering said mechanism ineffective to thereby render said closer efiective to close the door in the event of fire.

'3. In a door controller the combination of a door closer having a pair of interconnected relatively movable arms, an element rockably connected-with one of said arms and pivotally connected with said other arm, means for yieldably resisting pivotal movement between said element and said last mentioned arm, a ratchet on said last mentioned arm, a pawl on said element engageable with said ratchet, means responsive to rocking movement between said first mentioned arm and said element for shifting said pawl into and out of engagement with said ratchet, and

means. controlled by said first mentioned arm 4. In a door controller the combination of an arm having a rockable extension, a second arm pivotally connected with said extension, ratchet mechanism operable to prevent pivotal movement between said extension and said second arm in one direction, means responsive to relative rocking movement between said first named arm and said extension for rendering said ratchet mechanism effective or inefiective, and means for controlling relative movement between said first named arm and said extension.

5. In a door controller the combination of an arm having a rockable extension, a second arm pivotally connected with said extension, ratchet mechanism operable to prevent pivotal movement between said extension and said second arm in one direction, and means responsive to certain sequential movements of said first named arm relative to said extension to render said ratchet mechanism effective and also responsive to certain other sequential movements of said first named arm relative to said extension to render said ratchet mechanism inefiective.

6. In a door controller the combination of a door closer, a ratchet, a pawl engageable with said ratchet to control said closer, and means responsive to manipulation of said door for advancing or withdrawing said pawl into or out of engagement with said ratchet to thereby alternatively hold the door in any of a plurality of open positions or permit the same to close.

7. In a door controller the combination of two parts connected to a door and door frame, respectively, and relatively movable in response to movement of the door, a ratchet on one of said parts, a coacting pawl movable with the other of said parts, and means movable relative to both of said parts in response to manipulation of the door for advancing or withdrawing said pawl into or out of coacting engagement with said ratchet to thereby alternatively hold the door in any of a plurality of open positions or permit the same to close.

8. In a door controller the combination of two parts connected to a door and door casing, respectively, and relatively movable in response to movement of the door, an element movably connected with both of said parts, a ratchet on one of said parts, a coacting pawl movable with the other of said parts and means responsive to rela-v tive movement between said element and said other of said parts for advancing or withdrawing said pawl into or out of coacting engagement with said ratchet.

9. In a door controller the combination of two parts connected to a door and door casing, respectively, and relatively movable in response to movement of the door, an element rockably connected with both of said parts, means for frictionally resisting relative movement between said element and one of said parts, a ratchet on said last mentioned part, a pawl on said element, and means responsive to relative movement between said element and the other of said parts for advancing or withdrawing said pawl into or out of coacting relation with said ratchet.

ARTHUR J. BAYLEY.

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