US980836A - Double-acting door-check. - Google Patents

Description

- J. 0. REGAN.

DOUBLE ACTING DOOR GHEGK. APPLIOATION'IILBD J'AH122, 1910 Patented Jan; 3,1911.

6 sHEBTssHimT 1,

- [N VENT QR YWITNESSES. I

J. G. REGAN.

DOUBLE ACTING DOOR CHECK.

APPLIUATION FILED JAN. 22, 1910.

- Patented 35111.3,1911.

J. G. REGAN. DOUBLE ACT/INGDOOB. CHECK.

APPLICATION FILED TAN. 22, 1910. 980,836.

Patented Jan. 3, 1911;

6 SHEETS-SHEET 3- INVENTOR $224M Atlomey.

J. 0. REGAN. DOUBLE AGTING DOOR CHECK.

APPLICATION FILED JAN. 22, 1910.

Patented Jan. 3, 1911.

6 SEEETS-SHEET 4.

" Altorney W ITNESSES J. G. REGAN. DOUBLE ACTING DOOR CHECK. APPLICATION FILED 11.22, 1910.

Patented Jan. 3, 1911.

' INVENTOR u fifimw/ J. G. REGAN.

' DOUBLE ACTING DOOR CHECK.

APPLICATION FILED JAN. 22, 1910.

Patented Jan, 3, 1911.

6 SHEETSSEIIEET e.

INVENTOR whereby closing crankjshaft.

of the casing 1- UNITED STATES- CONNECTICUT, ASSIGNOR TO THE YALE PATENT OFFICE.

or STAMFORD, CONNECTICUT.

DOUBLE-ACTING DOOR-CHECK.

v Specification of Letters Patent.

, I Patented Jan. 3,1911.

'Kbplication filed January 22, 1910. 7 Serial No. 539,517.

To all whom it may concern:

Be it known that I, JOSEPH O. REGAN, of, Stamford, in the county of Fairfield and State of Connecticut, have invented certain new and useful Improvements in Double- Acting Door-Checks; and I do hereby declare the following to be a full, clear, and exactdescription of the invention, such as will enable others skilled in the art to which it appertains tomake and use the same.

y invention relates to an improvement in double acting door checks, the object being to provide a construction wherein the movement of the 'door in either direction, may be regulated the closing movement in A further object is to provide means when the door begins to close, the action will be comparatively quick, dependent'on the adjustment of the primary regulating means, While the final closing move: ment will be slower, owing to a gradual increasing resistance to the escape of the liquid from the'front of the piston.

A, further object is to generally simplify,

"cheapen and improve t-he'efliciency of this type of check, and with these objects in View my invention consists in the parts and combinations of parts and in the details of.

construction as will be more fully described and pointed out in the claims. In the accompanying draw'in is a view infrontelevationo Fig; 2 is a s, Figure 1 y the check. View in plan. Fig.3 is an end elevation. Fig. 4 is a vertical longitudinal section on the,line AB of Fig. 2 Fig.3 5 is a transverse vertical section on the line CD of Fig. 4. Fig. 6 is aviewin section of the casing the end cap being removed. Fig. 7 is a view on the line E-F of- Fig. 6. Figs. 8, 9 andlO areviews of a check casing showing a sliding valve actuated actuating the sliding valve. Figs. 13, 14 and 15 are views of the sliding valve, and Fig. 16 is a view showing the eheckapplied to a door. y p I .1 represents the checking cylinder closed at one end and open at its other'endyand provided in its upper surface with a thread: ed hole for the packing nut 2. The open end is closed by the removable end cap 3, the latter being elongated as shown to conform in shape and size to the closed end of the casing. The asing ispro vided with the depressed portion 4, having a depressed seat 6 for chgcking shaft 5. The casing 1 is also-pro v1 e edge of'the latter.

The in the seat 6, and near its upper end-ir the packing nut 2, which latter as before exthe opening in the top of independently of the other direction.

plainedcloses casing 1. This nut has a central opening for the passage of the shaft, which opening is counterbored from .the top tion of the packing ring 9, follower .10 and nut 11, which prevent they escape of any liquid up around I "further provided with the crank 12, connected by pitman 13 with the piston" 14. The closed end of casing l constitutes the cyllnder in which piston 14 moves, and the latter is connected to the'pitman 13 by the p1n'15, which latter as shown in Fig. 4,'acts as a back stop for the ball valve 16 which is mounted in the port 17 inthe piston 14, and operates to close said port as the p ston 1 s moving to its forward position,-as 1n the closing movement away from its seat, when the piston 1s1moving'rearwardly or toward the shaft 5, and thus permits the liquid in the casing to pass freely through port 17 into the cylinder in front of the-piston.

with the shaft. This may bea rotary valve as shown in Figs. '1 to 7, or it may be a sliding valve as shown in Figs. 8 to 15. The is'provided' with two ports 18 and 19 located at different levels, the port 19 being 1n a plane above the port 18. cates with port 20 in casing 1, and port 18 communicates with port but th'e ports 19 and 18 in valve 7 are so located with relation to each other and to the the check is connected 'rection, one of the valve ports will be in communication with its a rownn fOl the reee shaft 5. The shaft 5 is Port 19 communi-- ort in the casing. and when the door is clos ng in theopposite direction the other valve port will be in screwed to the door adjacent to the upper shaft 5 is mounted at its lower end I of the door, and moves f The double acting valve 7 is movable rotary valve is concentric with the shaft and '21 in said casing,

ports 20 and 21, that when the door to which is closing in one d 1- entering these ports passes through .liquid will treelv pass through port I? to limiting" the escape of the liquid. to the ports comniunication with its port. in the casing. The valve T embraces the lower end of the shaft 5. hut. its hore, is of slightly greater diameter than the diameter ot? the shaft. The ports 18 and 19 extend through the valve to the bore ot the latter and the liquid same and. up around the shaft to the main liquid reservoir.

llach of the ports 2 and it, which as heilore explained conununicate respectively with the ports it) and 18, is provided with a valve 22, located on opposite sides of the downward extension otthe casing l. as shown in Fig. i, so that the [low through each port can he regulated indepemlenttv ot the {tow through the other. thus permitting the door to clone. in one direction by one degree of resistance. and in the oppoRite direction by a dilterent resistance. The ports 20 and 21. extend laterally or tmvard the door side of the rising, and both communiate with the upwardly projecting port. 23 clearly SllOWH in Fig. 5. This upwardly projecting port (otnnnlnirates with the port B t which extends horizontally forward in the side wall of the cylinder and cominuni cates with the latter through the ports 23 and i'tt. located in a line, onr in advance of the other. :so that in the forward or closing movement ot the piaton toe port 2?. will he closed in the piston l t in advanre ot' the port 2t}. llith this construction. as the door begin. to close in either direction. the liquid pa through both openings thus perniittine; ot rapid closing movement. the speed however being dependent on the pouitioli ot the primary val 'es 212. its the piston reaches and closen port E23. the ltlt'lttllllll 11' liquid in the cylinder in advance of the pinion. 05* (apes through port. 2th the size of which may he regulated by the main valve 27. The casing" 1 constitute; the liquid reservoir. and From the foregoing it. will-he apparent that as the door is opened in either direction. the

the. front of the piston. the door which swings hoth inward and outward and which is closed by springs or spring hinges. is released, the springs; tend to close the door against, the resistance of the liquid now confined in the cylinder in front of the piston. As the door begins to close the pressure ot the'liquid in front. of the piston forces ball valve 16 to its vneat and holds it there. thus 25 and 2t). AS the piston moves forwardly. it closes port. thus checking; the. closing action, and lin'iiting the turther escape. ot the liquid to the single port 2t). the size of '\vhich,ina v. as explained. he regulated by the. main valve 97. 1v this onstruction l obtain a gradually llt 'l'ttlF lllgj resistance or control to the closing action. by means of which i am enabled to bring the door to a I access gradual stop at the proper point without any oscillation Whatever of the door. lly providing the check with valves accessible from the outside, the closing' action can he quickly and conveniently regulated so as to provide for one degree of re tance in closing in one directira'i, and. a tlttlOftQltt 1'0 sistance when closing in the opposite direction and by the elnployi'nent of the third or main valve the resistance to the final closing movement in both directions, can he under complete controlv 29 is a cap having a central. hole for the passage of the upper end of shaft; 5. [his cap rests above the casing 1-, outof iicentact therewith and is secured to the shaft by the pin 30. Hinged at 31 to this cap 29 is the arm 32 which is provided on its under side with a hug 33 which rests within a recess in the cap 29, the recess and hinge 31 being on opposite sides of the shaft This arm. therefore, is connected by the hinge, and by the lug and recess, With the cap 29, the lug and recess permitting free vertical movement of the free end of the arm within the necessary limite withoutdisengaging: the hug and recess. The otner free end oi this arm 3), is. prt'ivided with a rounded knob I")? projecting upwardly. which embraced by the torlied end 15% oi. the ecotion 235 of arm Zltl. Each member of the l'orlt coneaved to engage the side of the rminded knob forming in effect a hall. and Stuflifit joint, and the two members are held in. contact. with the knob by the screw 37. llv this means a universal joint is secured which permit. of the necesisary freedom of movement between the two arms without binding or straining the parts. The other member of arm 36 is provided at one end with threads for engagement with a threaded hole in the forked section of the arm whereby the sections may he adjusted as to length and is pivotally mounted at its oppoeite end in the bracket 37 secured to the door frame. This bracket comprises a base member secured to the door frame and two parallel outwardly and upwardly projecting meinhers to which the arm 36 is. pivoted. By inclining these members slightly. upwartlly it will be seen that as the door is opened out'wardly or in a direction to carry arm Cit; under the top of the door frame, the tree. end of Raid arm will, in its movement toward the door frame be slightly downwardly. so that by the time it reaches the frame it. will have been lowered sufiiciently to pass under same, the universal connection between the two arms, and the hinge con nection of arm 32 with the cap 29, permitting of such movement. of the arms. The arm 36 is supported in the bracket; against, any vertical n'iovement except that: which is imparted to it by the inclination of the sup porting member of the bracket, hence there can be no movement of the arm 32 or 36 exiceptwhen the 'door is being opened or .closed. I In the construction shown in Figs. 8 to 15 inclusive, the, parts are identical with those previously described, except that a slide valve is substituted for the rotary valve. This valve 7 is provided with two ports 18 and 19 located in different horizontal planes in order to aline with ports 20 and '21 and also in difierent vertical planes,

so that when one port 20 or 21 is uncovered the other will be covered. This valve is located in'a chamber into which the ports 20 d 21 terminate, and is actuated by two projecting ,erank pins 8 secured to shaft 5, one above the other, which pins coact with correspondingly located lugs 8 on the slid-- 1 ing valve 7*, so that when the crank shaft 5 is evolved by opening the door in one direction, the valve 7 will be moved correspondingly, by the engagement'of one crank pin 8 on shaft 5 with one lug 8 on the sliding valve 7*. This longitudinal movement of 25 the valve 7 brings the other lug 8 thereon in position to be engaged by the other crank pin 8, as the shaft is rotated in the opposite direction as in closing the door, thus operating to restore the valve toits normal position and to continue the movement 'of the valve in the event the door be opened in the opposite direction; These movements of the valve bring the two openings in the latter,

into line with the c'oacting ports in the cas-. ing. The-valve is restored to'its normal" position by the rotation-of the shaft 5 underthe influence of the closing springs or'spring hinges, the crank pins 8 on said shaft engaging the lugs 8 on the valve thus causing 40 the valve to'move in-unison with the shaft;

The opening in the 'valve extends through the latter thus permitting the liquid as it is forced from the front of the piston to flow back into the liquid reservoir.

It is evident that changes in the construction and relative arrangement of the several- 1. In a door check, the combination with a casing and acrank shaft therein, of a' piston mounted. in the casing and connected to the crank shaft, and a valve having two independent ports through same, the said valve being connected with and actuated by the crank shaft for opening and closing two ports leading from the casing in front of the piston.

2. In a door check, the combination Wltll' 6 a casing and a crank shaft therein, of a a main valve piston mounted in the casing and connected to the crank shaft, a valve having two independent ports through same, the said valve being connected with" and actuated by the crank shaft for opening and closing two ports leading from the casing in front of the piston, and a valve in each port for regulatmg the passage of liquid through said ports.

3. In a door check, the combination with a casing and a'crank shaft therein, of a piston mounted in the casing and connected to tlie'crank, a double valve carried by said opened, and a valve in the opening leading from the piston chamber for regulating the escape of liquid from said chamber.

5. In a door check, a checking control consisting of a port which connects with the liquid reservoir and with the piston chamber, said port having two openings, into the piston chamber one in advance of the other, the forward opening being .proiyid'ed with a regulating'valve ;'and also two openings into the liquid reservoir, each of said openings being'further controlledby its own separate valve substantially as described. v,

G. In a door check, the combination with a casing, a piston chamber therein, a piston in said chamber, and a crank shaft, of a double valve carried by the crank for open'.

ing and closing ports leadingto the piston chamber, a'valve in each of said ports for regulatin the passage of the liquid through a third valve for regulatingthesame, an passage of liquid from the'piston chamber into said ports.

7 The combinationwith a casing, a crank shaft and a piston therein, and means connecting the crank and piston, of a rotary valve concentric with and actuated by the crank shaft and adapted to open and close a port through which the liquid passes from the front of the piston during thecldsing movement of the door.

8. The combination with a casing, a crank shaft and a piston therein, and means connecting the crank and'piston, of a rotary valve concentric with and actuat'ed by the crank shaft, the said valve having two independent ports adapted to register with cor responding ports in casing.

9. The combination with a casing, a crank ssmass shaft and a piston therein, and means 0011- In testimony wuereof, I have signer this nesting the crank and piston, of a rotary valve cnmcentriu with and actuated by the crank; shaft, the said valve having two independent ports adapted to register with cor scribing witnesses.

JOSEPH (J. REGAN rspomling ports in the casing, and a Valve \Vitn esses: 111 each of sand latter ports for controlhng SCHUYLER MERRHT,

thev passage of liquid through'sam-e. WARREN S. ABEL.

specification in the presenceof two sub Mv

Images