US663844A - Door check and closer. - Google Patents

Description

No. 663,844. Patented Dec. la, |900. G..l ASHLEY.

' nous cHEcK Ann cLosE'.

(Application led Apr. 30, 1900.1

(No Model.)

rGEORGE ASHLEY, OF NEW BRITAIN, CONNECTICUT, ASSIGNOR OF TWO- THIRDS TO ALFRED W. HADLEY AND GEORGE ASHLEY, JR., OF SAME PLACE.

DOOR CHECK AND` CLOSER.

SPECIFICATION forming part of Letters PatentlNo. 663,844, dated December 18, 1900.

Y Application filed April 30, 1900. Serial No. 14.812. (No model.)

To all whom it may oon/cern.:

Be it known that I, GEORGE ASHLEY, a citizen of the United States, residing in New Britain, in the county of Hartford and State of Connecticut, have invented certain new and useful Improvements in a Combined Door Check and Closer, of which the following is a specification.

4My invention relates to door checks and closers, particularly of the pneumatic type; and it has for its object the provision of improved instrumentalities whereby those de-4 vices are rendered more efficient in operation and whereby the door will always be fully closed against wind-pressure or other natural causes.

Heretofore with some kinds of pneumatic door-closers trouble has arisen on account of the failure completely to shut the door, especially when it is forced to close against the pressure of a strong wind, and consequently much annoyance is caused by the inrush of` air, and drafts detrimental to sound hygienic conditions are produced. With my invention this defect is entirely obviated and the door will be slowly and completely shut against any pressure not more forcible than the power of the spring employed in connection with the pneumatic cushion.

Referring to the drawings, Figure 1 is a perspective representation of my invention, showing the same applied to a door. Fig. 2 is a plan view. Fig. 3 is a cross-section on line 3 3, Fig. 2, looking in the direction of the arrow. Fig. 4 is a section on line 4 4, Fig. 2, looking toward the left, the case containing the spring being partially in section. Fig. 5 is a detail in perspective hereinafter mentioned.

Like numerals designate similar parts throughout the several views.

Referring to the drawings, 5 designates the bed-plate of my improved door closer and checl,which may be attached to a door (designated by 6) in any desired way-for instance, by screws 7 passing through said' bed-plate.

Attached to or, as shown, integral with the j bed-plate 5 is a pneumatic cylinder 8, and this cylinder is perforated at 8 and 82, Fig. 3, for a purpose hereinafter described, a channeled screw or other suitable device 9, having a washer 9', being provided for either partially or wholly closing the perforation S', as circumstances may require.

Mounted on the bed-plate 5 is a rack, (designated by 10,) which may be fitted for movement back and forth on said bed-plate in any desired way. As shown, however, this rack is slotted at 10/ and is fitted over screws or other projections 11 11', threaded into lugs 12 12', projecting from the bed-plate. In engagement with this rack 10 is a Wheel 13, secured to a shaft 14, to which one end of a spring 14 is attached in the usual manner, the other end of said spring being connected to a fixed part-for instance, the spring-case 11o-as is usual.

Projecting at an angle to one end of the rack 10 is a crossbar 16, and attached to this cross-bar is a rod 17, connected at its rear end to an arm 19, which is rigidly secured inany suitable manner to the rod 2O of the piston 20, operating and guided in an opening in the end of the pneumatic cylinder 8. Carried by this cross-bar 16 is a wedge or other suitable `cam-shaped projection 21, which when the door is closed is normally in engagement with a pin or other projection 22, projecting from a spring-actuated rod 23, movable in a bearing formed in an arm 24 of a U-shaped bracket either attached to or forming a part of the bed-plate 5.

As willvbe obvious by reference to Fig. 8, the pneumatic cylinder 8 is provided with a tubular projection 25, having an air-vent 82, which projection passes through an opening in the arm 25 of bracket- 24, and the springactuated rod 23 is fitted at its end with a disk valve 26, which is normally held by the coiled or other suitable spring 27 in contact with the end ofthe tubular projection or vent 25 to close the same and prevent the exit of air from the cylinder 8. Screw 9, entering the opening 8 of the cylinder 8, is preferablycut away or channeled in order that by adj usting said screw the exit of air from the cylinder may be regulated as desired and the door be caused to close either slowly or rapidly by the spring contained in the case or chamber 15.

Any other suitable valves may be substituted for the screw 9 and the disk valve 26 IOO without departure from the scope of my invention, and the details of the means for actuating the valve 26 may be Widely varied and stil] be Within the purview thereof.

Connected to the shaft 14 in any suitable manner is a crank-arm 28, attached at one end, preferably by an adjustable connection compressed in the pneumatic cylinder 8, and` justv before the closing movement of the door is completed the `rack 10, which is all the While, being forced forwardV by gear 13, carries the wedge or cam 21 into a position where it Will come in contact with and force back the spring-actuated disk valve 26, thereby immediately releasing the compressed air within the cylinder and permitting the spring to expand suddenly and exert its full force uponand close the door.

The pressure of the spring upon4 the door may be nicely regulated by manipulating the valve 9, which, when partially open, allows more or less air to escape from the pneumatic cylinder 8, and thus reduces the pressure of the air-cushion against the piston contained in said cylinder.

Many changes may be made in the construction of my improved device, andthe rack and its connected parts may be of different constructions from those shown without departure frommy invention,

Having described; my invention, I claim- 1. A combined door check and closer comprising a base-plate, a pneumatic cylinder, and aspring case or barrel secured to said base-plate; a piston in said cylinder; a shaft journaled in bearings of the spring-case and carrying a gear; a spring connected at one endv to said shaft and at the other end to said case; a rack mounted for sliding movement on the bed-plate and having a` cross-bar.; a cam-shaped projection carried by said crossbar; means for connecting the cross-bary Wi th thepiston-rod; and a valve normally closing aport in the cylinderand adapted to be Withdrawn by said `cam-shaped projection.

2. A combined door check andcloser comprising a base-plate carrying a `pneumatic cylinder, said cylinder having air-relief ports; a piston in said cylinder; a rack mounted for sliding movement on the base-plate; means foractuating thev rack; a cam-shaped projectionpmovable Withthe rack; means connecting the rack With the rod ofthe piston; and air-relief valves one of which is actuated by said. cam-shaped projection.

3. A combined door check and closer comprising a base-plate; a rack movable back and forth onguides of said base-plate; gearing for actuating said rack; a cross-bar projecting from one end of said rack; a pneumatic cylinder having an air-relief port; a piston vvithin said cylinder; anarmiconnected yto the rod of said piston; a rod connecting said arm with the cross-bar of the rack; a cam-shaped projection carried bythecrossbar of the rack; and a spring-actuated valve normally closing the relief-port in the cylinderand adapted to be Withdrawn by said camshaped projection.

4. A combined door check and closer comprising a base-plate; a rack reciprocatory onv said base-plate; a gear in engagement with said rack andspring-actuated in one direction; a pneumatic, cylinder Carried by the base-plate and having an air-relief port; a piston With-insaid, cylinder; devices connecting the rod; of, said piston with therack; a ca m-shapedpnojection,movable ,with therack;

a spring-actuated valve normally clesing saidk air-relief port; and a pin carried bysaidvalve With which. the @ain-Shaped prnjeefcn, QH- gags to Withdraw said valve.

5. A Combined door check andE closercomrisinv al neumatic c 7linder havin(r air-ree p d o lief ports; a pistonjnsaid cylinder; ai, channeled screvs7 located inlone of said. ponts; a.

IOO

prising a base-plate apneumatcylin'der secured to said base-plateandhavingair-relief ports; an adjustable valve for, regulating thel emission of air from one. of said ports.; a

spring-actuatedi valve for normally closing the othert of said, ports; a piston,` Withinithe cylinder; a rack mounted for sliding Inovement 0n the base-plate andicarryng a Crossbar; 21,110.61 attachedto saidcross-barsl` an arm connectingsaidrod Withthe piston-rod; and.-

@03m-Shaped `ip10j6Ct0-n carriedby 11h@ GIQSS- bar, ofthe rack andadaptedto withdraw the spring-aetuated valve.

7. A combineddoor cheek.` andeleser 0.0m,- prising a .base-plate; a pneu matic cylinder lo,-

cated on said base-platetndh'aving air-relief ports; a channeled screw threaded'fin oneof said ports and carrying awasher; agSpringactuatedvalye mounted in4 bearingsof the base-plate .andzadapted to .close the other of saidairfrelief. ports; apistonllocatedwithin thecylinder a movable rack carrying la cross.- barI at one end; acam-,shaped projection on saidfcross-bar and. adapted, to .withdraw the Spring-actuated valve; arod secured to Said cross-bar; means connecting said rod vviththej end vofthe piston-rod; and esprime-controlled device for actuating therackin.onel direction.

8. The combination, With a door and its cas- IIO ing, of a bed-plate secu red to one of said parts; a pneumatic cylinder carried bythe bed-plate and having an air-relief port; a slidin g valve mounted i'n bearings of said bed-plate and spring-actuated normally to close said airrelief port; a piston located Within the pneumatic cylinder; a rack mounted for sliding movement on the bed-plate and having a projecting arm; a cam-shaped projection carried by said arml and adapted to withdraw the spring-actuated Valve; a rod connecting the arm projecting from the rack with a device attached to the end of the piston rod; a spring case or barrel mounted on the bedplate; a shaft carrying a pinion in engagement with the rack; a spring secu red to said shaft and to the interior of said case; and means for connecting said shaft With the doorframe.

9. The combination, with a door and its casing, of abcd-plate secured to the door; a pneumatic cylinder having an air-relief port carried by said bed-plate; a piston within said cylinder; arack having an singularly-projecting bar; a cani-shaped device secured to said bar; a bracket attached to the bed-plate; a spring-actuated valve mounted in bearings of the bracket and normally closing the airL relief port in the cylinder; a shaft, springactuated in one direction; a gear carried by said shaft and in engagement with the rack; a cranksecured to the shaft; and a rod or link connecting said crank With the door-casing.

GEORGE ASHLEYA Witnesses:

E. N. HUMPHREY, HENRY BISSELL.

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