US2377636A - Door check and closer - Google Patents

Door check and closer Download PDF

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Publication number
US2377636A
US2377636A US460137A US46013742A US2377636A US 2377636 A US2377636 A US 2377636A US 460137 A US460137 A US 460137A US 46013742 A US46013742 A US 46013742A US 2377636 A US2377636 A US 2377636A
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United States
Prior art keywords
door
closer
plunger
door check
spring
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Expired - Lifetime
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US460137A
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Sigfrid-Larsson Johan David
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Individual
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Individual
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    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05F3/00—Closers or openers with braking devices, e.g. checks; Construction of pneumatic or liquid braking devices
    • E05F3/04—Closers or openers with braking devices, e.g. checks; Construction of pneumatic or liquid braking devices with liquid piston brakes
    • E05F3/08—Closers or openers with braking devices, e.g. checks; Construction of pneumatic or liquid braking devices with liquid piston brakes in which a torsion spring rotates a member around an axis arranged in the direction of the axis of the piston
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME RELATING TO HINGES OR OTHER SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS AND DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION, CHECKS FOR WINGS AND WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05Y2900/00—Application of doors, windows, wings or fittings thereof
    • E05Y2900/10—Application of doors, windows, wings or fittings thereof for buildings or parts thereof
    • E05Y2900/13—Application of doors, windows, wings or fittings thereof for buildings or parts thereof characterised by the type of wing
    • E05Y2900/132—Doors

Definitions

  • the present invention refers to a hydraulic door check and closer having a spring adapted to shut the door, the shutting speed being controlled by a hydraulic braking device, and the details of the invention are substantially directed ,to the braking device, the securing of the spring and a simple and reliable means to facilitate the shutting 02E the door by a final impulse.
  • the door-shutter according to the invention is rendered exceedingly simple, durable, safe in operation and cheap in manufacture.
  • Fig. 1 shows a partly sectioned elevation of the door check and closer case or the door in a vertical position.
  • the lower end 22 of the spring is bent axially downwardly and introduced into a corresponding recess in the bottom of the casing.
  • the end portion 22 of the spring may be bent radially inwardly, a screw being plunger is axially displaceable by the upper portion thereof being provided with threads 6 en- I gaging corresponding threads in the lid.
  • bottom portion 1' of the casing is of an enlarged thickness, and provided therein is a tubular cylindrical bore 8 corresponding to the diameter of the plunger, said bore affording adequate guidance to the plunger which reaches the bottom thereof in all positions.
  • the casing 2 is partlyfilled with some pressure liquid 9, such as oil of suitable constant viscosity.
  • the plunger then provided on both sides thereof, so that the heads of the screws are caused to squeeze said end portion securely in position.
  • the brake plunger When the door is opened, the brake plunger is turned and at the same time displaced upwardly wardly by atransverse pin L3.
  • the lower porthereto a cylindricalrod l! of the same diameter as that of the mouth of the passage l5 adapted to-receive the end portion of the rod [1.
  • This end portion of the rod is bevelled off on a plane in the cylindrical bore, so that a sucking effect is produced therein, the valve ll being thus opened and pressure liquid flowing into the annular space [4 through the passages Ill and I5,
  • a door check'and closer comprising a cylindrical rotatable brake plunger provided with threads on the upper portion thereof in engagement with threads of an aperture in the lid, a helical spring about the brake plunger, the

Description

June 'J. D. s. LARSSON 2,377,636
DOOR CHECK AND CLOSER Filed Sent. 29, 1942 Patented June 5, 1945 chob'a dimox Aimior iosiin H oohan in iasi' fridgLarsson Eskilstuna, 1
*Appliciiti on september 29, '19'42, "Si:riv'll No.-' l6 337 i In Sweden March 29, 1940 1 Claim.
The present invention refers to a hydraulic door check and closer having a spring adapted to shut the door, the shutting speed being controlled by a hydraulic braking device, and the details of the invention are substantially directed ,to the braking device, the securing of the spring and a simple and reliable means to facilitate the shutting 02E the door by a final impulse. Hereby the door-shutter according to the invention is rendered exceedingly simple, durable, safe in operation and cheap in manufacture.
The invention is illustrated on the accom- .panying drawing, wherein Fig. 1 shows a partly sectioned elevation of the door check and closer case or the door in a vertical position. The
I8 inclined to the axis of the rod. Thus there will be'formed'an opening on the lines of a circular segment in the mouthor the passage 15, the size of which opening is adapted to be minutely controlled by the turning of the screw from the position in which the needle valve is entirely open up to the position in which it is entirely closed. The pressure liquid escapes through said opening in a concentrated jet, which will bring about a soft operation, free from jerks, in the shutting of the door. Arranged about the brake plunger 3 is a powerful helical spring l9 bearing with its lowermost turns in a circular groove 20 in the bottom of the casing so as to be properly uided therein. The upper end 2| of the spring is bent radially inwardly and introduced into. a corresponding transverse recess in the brake plunger, and the lower end 22 of the spring is bent axially downwardly and introduced into a corresponding recess in the bottom of the casing. Alternatively, the end portion 22 of the spring may be bent radially inwardly, a screw being plunger is axially displaceable by the upper portion thereof being provided with threads 6 en- I gaging corresponding threads in the lid. The
bottom portion 1' of the casing is of an enlarged thickness, and provided therein is a tubular cylindrical bore 8 corresponding to the diameter of the plunger, said bore affording adequate guidance to the plunger which reaches the bottom thereof in all positions. The casing 2 is partlyfilled with some pressure liquid 9, such as oil of suitable constant viscosity. The plunger then provided on both sides thereof, so that the heads of the screws are caused to squeeze said end portion securely in position. These means -sition, an overflow passage is formed between the annular space M and the pressure liquid over the bottom of the casing.
The arrangements described operate as follows:
When the door is opened, the brake plunger is turned and at the same time displaced upwardly wardly by atransverse pin L3. The lower porthereto a cylindricalrod l! of the same diameter as that of the mouth of the passage l5 adapted to-receive the end portion of the rod [1. This end portion of the rod is bevelled off on a plane in the cylindrical bore, so that a sucking effect is produced therein, the valve ll being thus opened and pressure liquid flowing into the annular space [4 through the passages Ill and I5,
closed and pressure liquid is forced out through the passage l5, wherein the needle valve controls and brakes the flow, so as to prevent the door from being shut too rapidly. When the door is nearly closed and the recess 213 of the ceases, sov that at the moment of shutting the door the spring only has the air resistance in the doorcase to overcome and the door is thus caused to be shut with a final impact, that is to say more rapidly, with a movement time from resistance during the very last portion of the shutting movement, which involves that the shutting of the door takes place more rapidly than if the plunger were to have a braking effect up to the moment the door was closed.
What I claim is:
A door check'and closer comprising a cylindrical rotatable brake plunger provided with threads on the upper portion thereof in engagement with threads of an aperture in the lid, a helical spring about the brake plunger, the
upper end of the spring being-bent radially intions, an annular space concentric to the brake plunger in the lower portion of the cylindrical bore, an axial recess 'in the brake plunger arran'ged for a distance above the lower end of the brake plunger, the length Of said recess being so adapted that, when the brake plunger is near its lowermost position, an overflow passage is formed between said annular space and the pressure liquid in the casing.
JOHAN DAVID SIGFRID LARSSON.
US460137A 1940-03-29 1942-09-29 Door check and closer Expired - Lifetime US2377636A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE2377636X 1940-03-29

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US2377636A true US2377636A (en) 1945-06-05

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