US1560757A - Door check and closer - Google Patents

Description

- A, J..BUSH DOOR CHECK AND CLOSER Filed Oct. 6, 192

2 Sheets-Sheet l A. J. BUSH DOOR CHECK AND CLOSER Filed on. e, 1924 Z'Shets-Shept 2 v,

I Patented Nov. 16, 1925.

PATENT C ALDEN J. BUSH, COLUMBUS, omo.

I v roononncx AND :65am- -App1ication filed. Qctober s, 1924. Serial No. 741,796.

' To all whom it may con-06m: I

Be it knownthat I, ALDEN J. BUSH, a citizen of the United States, residing at Columbus, in the county of Franklin and State of Ohio, have invented certain new and useful Improvements in Door Checks and Closers, of which the following is a specification. f

This invention relates to improvements 10 in door checks and closers, it relating particularly to a device in which the'use of liquid and the difliculties incident thereto,

. me t of the "1 015.

are avoided, depending for its accuracy of operation upon pneumatic and fr ction brake mechanism. I

A main purpose of the invention is to simplify the construction of a door check and closer in which accuracy of operation depends upon pneumatic, and friction brake means, and .to minimize the number ofpart-s and avoid the use'of parts that will get out of order and cause trouble. check valves and all forms of automatic valves are dispensed with, and, in lieuther'eof, there is employed on each piston a single non-automatic valve'havmg its'stopper 'a'djustably. arranged in the valve. This invention also permits of the use of a brake "ring less stitfthan those'commonly usedon a r device of this general, character.

tion of the adjustable valve is also important and in this device it has been so placed that it is readily accessible for manipulation,

when a piston reaches the end of one of its movements.

In this improved 7 a cylinder, much shorter in' length than the ones commonly used in no-liquid door checks and closers now on the market, and this 40 shortened cylinder is especially adapted for use with the non automatic valve placed upon the piston. c I

In a general way, thepiston movement is somewhat the same as 1n the device illustrated in.Le tters Patent Reissue No. 14,674

to J. C. Schmidt, dated.June"24t. 1919, and

' reference is here made for a fullfde scrio tion of the movements of the penumat c Fig. 2 is'a top plan View of the same. Y a Fig. 3 .1s along1tu'chna1 section. V i" To this end The locadevice there is employed ei-iceiorI resistance caused by the pneumatic and friction .brake means. v -7ith these and other objects inview, t he invention consists in certain novel features of construction and combinations of parts,

as'hereinafter set forth and pointed out in the claims. l

In. the accompanying drawings: I Fig. 1 is a view in front elevation, of a door check and closer'e'mbodying the inven- Fig. his a bottom plan VlQW partly section, showing the positions when the door is open. a. Fig. 5 is a view similar to Fig. .L'but showing the parts in a' different position; lever arm 28 moves contra-clock wise in moving from position shown in Fig. 4 to. that of'Fig.5.

of the parts the pistons.

Figs. 6 and'7'are 'detail views. of one of i "F'gs; 8' and9'are detailviews of thefbrake mechanism with the insert. disk removed.

10 is a section on 'line 10';10 of- Fig.9. "j Like letters of reference apply to like parts throughout the different views.

1. represents the casing, prov1dedwith cylinders, 2 Iand3,vwhich are disposed diacommunicate with the interior of'said casing.

Lme trically opposite oneto' the-other, and

A- friction element is located within the casingl, so as to cooperate withthe wall thereof,and is connected with and controlled by the operation of pistons 4: and 5, in the respectivecylinders 2 and 3, said friction element beingfconnected with said pistonsby means of piston rods6 and 7. Each of the pistons 4 and 5 is providedwith a valve '9 (see Figs. 3 and '7). u

Theistoppers 10 for said valves ar adjustiably arranged, and whenadjusted, remain fixed in their adjustedposition, thereby dispensin'g with valves having automatic operating parts. that are liable to cause trouble,

'throughf failure always to operate properly.

When th *valveif in this improved arrange ment, is adjusted to its'pr'oper'position. the

same remains in a fixed-position during, all movements of the ope ating 1 parts of wthe pneumatic means An arr mlet la m each valve" permits air to pass "into passages 11 'ea sl d fi s??? Q' fi .IPYHPldQFT-t stopper of valve 9 is adjusted to allow the proper amount of air to pass into cylinders.

The friction element, above referred to, comprises two sections of a divided brake ring 14, which is provided with a f-riction element 15 to engage the inner wall of the casing 1 (see Fig. 9). These two .sections of rings are slidingly connected one to the other, so t-hat they are normally in inoperative position but are forced apart into topnative position by the oscillation of block 16. One brake section has a projecting tongue-shaped part 17 and the other brake section has a grooved member 18 into which the tongue projects with the block 16 arranged between the inner wall-or the gr'obve and the end of the tongue. tions' of the bra-lie ring are? mounted within a recess formed in the disk 19 which is rigid with the shaft 20 and when the lbl'ocli is oscillated there will be a cammin g action, such as will force the two brake sections apartythereby causing :trictional engagement of the brake 15 with the inner wall of the casing. The block 16 is secured to the arm 21 and as shown in Figs: 8 and 10 there projects from each side of the block '16 pintles 16onsof which fits within a'bearing in the disk 19 and the other ina bearing formed in the insert "disk 22 which is seciired by screws 8 to disk 19. The arm 21 is se- 'cu-r'etltb' the blo'ck by one ofthe pintles and projects across the face ofthe disk '22, cooperating with stop mechanism liereiiiafter mentioned to prevent the setting of; the

brake during the opening movement at the door. The shaft 20 (Fig. 3) is journaled in bearings formed insaid casing 1, and said shaft is rigidly cbn-nected wth a sleeves?) to which the spring 24 is secured as fully described in said reissue L amas The connections to the arm 28 are substantially the same as in said reissue patent aiid an arm 29 is likewise secured to the door name. a

The cylinder 2 dperates as a suctionudevice to brake the deer during the initial closing movement and cylinder B'as a compress-ion eylinderfiduri-ng the, final, closing movement, and the degree descen ant].

compression is regulated by valves .9. "During the opening 9f domiithg y. of the arm :21 cont-a ag 's't the emp asise Y 80 jspro3iectrng nemshe ,'-1sk"22 (-see Figs. 4 and 5:)-;- Thejfree end ofija rm 21 se -greed a I g emeni swarm when the "51 e The two sec 1 connector recanted mg, he 2 m y move away from said stop and thereby the brake will be set as explained above. The opening 31 is for stop 80 to make this device suitable for either a right hand or left hand "ClOOl.

Having thus described my invention, I claim:

1., In a; structure of the character described, the combination of a movable closure with a braking device for same, the combination of an oscillating member controlled by said closure, with a connector mounted on said oscillating member capable of having a limited movement relatively to said inember, pneumatic means for retarding the movement ofsai-d connector-to cause it to have a relative movement to said'osoil- .la'ting member, a stop device for preventing the retardation of said connector during 13116.1110V6l1161it0f the movable device in one direction,- while permitting a retardation during the movement of the movable device in the opposite direction.

2. In a door check, the combination oi'an oscillating member a movable closuredevice connected with said member, a connector movement of the oscillating member in one,

direction, while permitting its retardation during the movement in'the opposite direction; I

8. 111 a door check, thecombinationof an oscillating member, ,a closure device con-1 nected with said oscillating member, a connector moving in unison with said oscillatrne-mber, but capable of having an additional movement relative to said member,

pneumatic means connected with said connector, a valve having a non-automatic stopper in the piston, of said pneumatic means and a stop device adjacent the connector, forpreventing the retardation of the connector by the pneumatic means dur-. ing the opening movement of the closure device. r y i t. In a device, ofthe character described having ars nals cl and d6 {vice therefor, t e con greener as oscilla ng nieinber controlledby g p said os ara l jfrtavmafi Cit a spring actuated member, of a friction device connected therewith, operating means for said friction device and fluid means connected With said operating means for retarding the movement of the latter to eflect the application of the friction device during the closing movement of the mechanism and a stop device for preventing theretarding movement of said operating mechanism durmg the openmg movements of the mechanlsm.

In testimony whereof, I have hereunto set my hand, this 24th day for September, I

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