US2469447A - Adjusting means for cartridge type door control hinges - Google Patents

Description

May 10,

Filed Dec.

J. SWANSON 2 Sheets-Sheet l l l l INVENTOR ALFRED I. SWANSON BYi- ATTORNEY 2 Sheets-Sheet 2 May 10, 1949. J. SWANSON ADJUST MEANS FOR CARTRIDGE TYPE DOOR CONTROL HINGES Filed Dec. 7, 1946 FIG. 6.

FIG. 4.

M @i I l INVENTOR ALFRED J. SWANSON i BY ATTORNEY Patented May 10, 1949 ADJUSTING MEANS FOR CARTRIDGE TYPE- DOOR GONTROL HINGES.

Alfred .1. Swanson, Hollywood, Calif.

Application December 7, 1946, SerialNo. 714,704

3 e ams- 1 This invention. relates to door closure. control devices and in particular to adjusting means for a cartridge type. door controlling hinge.

One object of my invention is to provide door hinges with interchangeable and removable cartridge-type control units concentric with the hinge pins. Another object ofmy invention is to provide adjusting means in a controlling hinge. having a removable cartridgeetypehydr-aulic checking unit for adjusting the relativeaxial position of the cartridge. and the buttsand for keeping the parts in selected relative positions.

These and other objects are attained by my invention which will be understoodf'rom the 01 lowing description, reference being made to the accompanying drawings in which:

Fig. 1 is a side elevation view partly in section and with parts broken away of my hydraulic checking hinge;

Fig. 2 is a side elevational view showingthe cartridge containing an hydraulic checking mechanism;

Fig. 3 is a cross-sectional view taken on the line Ii--.3 of Fig. 1-;

Fig. 4 is a cross-sectional view taken on the line 44 of Fig. 1;

Fig. 5 is a cross-sectional view taken on the line 5-.5 of Fig. 1-;

Fig. 6 is a cross-sectional view taken on the line 6 6 of Fig-.1;

Fig. 7 is a detail sectional view taken on the line 1-1 of Fig. 3;

Fig. 8 isv a fragmentary view taken on the line 8--8 of Fig. 1;

Fig. 9. is an and elevation of the worm.

In general, myinvention relatesto a doorhinge having an hydraulic checking mechanism for controllin the angular movement of the door, said checking mechanism being enclosed in a. removable cartridge which is operatively encased in the cavity of the outer partcasings attached. to the two hinge leaves of each hinge.

The removable cartridge I containing the hy- 17 11 kin m ch nism. n udes. Q l i' l cal housing H which is, seated up to. the portion thereof pr ed th. an n ra ce ral co lar '2 in e a it 0f h ow r o ter alf qa i s l3 to which is attached the leai l4, and the upp a sing en lo es t the, co ar he upper part of the cylindrical cartridge. to which attached the, th r af- 1 said pe half casing l5 being non-rqtatably attached to the hexagonal upper end of th hin e pin l-& by m a of a h a ona 1. 9.12 19. i the closed u P end her of art d e a ius ab y held against turning. in the cavity of the owe half-casing [3 by the. helical pinion or worm 20 which is mounted! in, the cylindrical hole 2 ;l drilled; in the juncture oi the casing with the lower leaf, at right angles to. the axis of the cartridge so that the helical threads extend: to engage worm gear teeth in the collar of the cartridge.

The worm or helical pin-ion Z0,- is, held in the hole 2! by means of; the aperturedretaining washer 2,3, which is held in. the cavity a ainst one end ofthe pinion by peening or pressing the edge ofthe cavity over the. washer, or otherwise fastening the washer to the lower leaf. The pinionv Z0; is conveniently provided with a hexagonal socket 2%, which may be turned by means of a suitable tool inserted through the opening 25. of the washer 23-. Indexing marks 13 and M may be provided on the collar I12 and the. adjacent surface of the-lower half-.casing l 3.

The central collar I12 of the cartridge is pro? vided with teeth 22- adapted for engagement with the helical threactsv of the pinion 20-. By turning the pinion 20, the axial position of the hydraulic cartridge l0. relative to. the. lower leaf L4,, may be adjusted. After the adjustment is made, the pinion 20 continues to prevent the cartridge In. from turningin the lower halfcasing l3, so that; the hydraulic checking mechanism will function to control the movement of the hinge.

The hydraulic mechanism is enclosed in the hydraulic cartridge. unit to which, as previously mentioned, consists; of a lilldrical cartridge housing II provided; its central portion with an outwardly extending collar l2, The hexag- Onal extension I! of the hinge pin l8 extends above the. cap 28- wh ich closes the upper end of the. cartridge housing H. In the opposite end of the cartridge housing l;l there is provided a bottom closure. 3:0 having a bearing 3 l on the hinge pin 1.8.

The hydraulicv checking mechanism consists of a rotary s o 3 e whed to he in e in l8 n a dric Wo i h mber- 34 h i a. se mental partition member or darn 35. The work: ing chamber 34 is for-med bythe inner surface of the cartridge housing |,l the radial ends of the dam 35, the bottom closing member 30 and the upper closing surface. consisting of the bottom 3.! of the reservoir bushing 38'. A bearing for the lowerend of the hinge pin it} is formed by reduping the diameter of the hinge pin below the El on to t: a 91s in the. closin m b r 3 5: fo the cartri g ous The. rotation of the hinge pin it causes the angular movement therewith of the rotary piston 33 in the working chamber 34 from one edge of the dam 35 to the other edge, the dam 35 extending between the wall of the cartridge housing 5 I to the surface of the hinge pin. As the piston moves, the hydraulic fluid is forced through several controlled conduits which act to regulate the hydraulic friction in the movement of the hydraulic fluid from one side of the piston to the other. One control consists of metering pin 39 operating in a hole 40 concentric with and in the center of the hinge pin It. At right angles to the hinge pin a bypass conduit 4! through the hinge pin is provided, the metering pin, in the portion adjacent the conduit ll, being tapered so that the flow of hydraulic fluid may be closely regulated by the endwise movement of the metering pin 39. The pin 39 is positioned by the threaded plug 42 which is threaded into a hole in the upper part of the hinge pin, the metering pin 39 being held upwardly by a compressed coil spring E3 in the bottom of the hole Ail. A one-way bypass conduit from one side of the piston to the other is provided by the hole M leading through the hinge pin it from one side of the piston 33 to the other, the hole being provided with a ball 45 in a seat 46 held in place by a retainer il. When the piston 33 is moved counter clockwise, hydraulic liquid flows freely from the closed side C of the working chamber to the open side 0 of the chamber. When the piston is moved in the opposite direction, the ball is forced into the seat 46 and shuts off the flow of hydraulic fluid. In the movement of the piston, the flow of hydraulic fluid is further controlled by means of grooves of varying cross-sectional area, cut in the under surface 31 of the reservoir bottom which serves as the upper closing wall for the hydraulic working chamber. In the preferred arrangement, as shown in dotted lines in Figs. 3-5 inclusive, a bypass groove 48 large enough to permit substantially unrestricted movement of the hydraulic fluid therethrough is provided in the first part of the movement of the piston (in the direction of closing the hinge) following which the groove is tapered to gradually retard the flow of hydraulic fluid by gradually decreasing the cross-sectional area; followed by a terminal groove 58 also indicated in dotted lines in Figs. 3-5 inclusive and similar in cross-sectional area to the bypass groove 48, allowing free flow of hydraulic fluid. The arrangement of connected bypass grooves thus described provides for the initial unretarded closing of the hinge and the attached door by suitable actuator means until the door approaches the fully closed position, at which point the constricted groove retards the flow of liquid and slows down the movement of the door, and then shortly before reaching the final closed position, the hydraulic resistance is removed by the provision of the large cross-sectional area 5!! so that the door is forced into the latch to the fully closed position.

The non-pressured reserve hydraulic liquid reservoir consists of an annular space between the reservoir bushing 38 and the hinge pin l8. The reservoir is connected hydraulically with the working chamber by means of check-valved orifices 56, one on each side of the piston and communicating with the outer ends of the grooves 48 and 58 respectively. The reservoir bushing is held in place within the cartridge housing against a shoulder formed at the base of hexagonal extension I! of the hinge pin by means of locking rings 58 and 59. The top portion of the reservoir is closed by the closing cap 28, and sleeve bearing 60 and 6! are provided between the hinge pin and the closing cap 60, a rubber O-ring 62 being provided around the hinge pin between the bearings 60 and El to prevent leakage of hydraulic liquid. The radial position of the reservoir bushing is fixed by means of the key 63 in suitably placed holes in the reservoir bushing 38 and the dam 35. A closing cap 64 is provided at the upper end of the opening in the hexagonal extension I! of the hinge pin I8.

A friction detent is provided between the cartridge I l and the upper part casing l5 consisting of a top spring disk 5!, an intermediate spring disk 52 and lower spring disk 52A attached to rotate with the shaft extension H. A ball 53 is held in a hole in disks 52 and 52A and at times rolls upon a wedge 66 having a pin 6? insertable in the hole 68 in the closing cap 28, to thereby frictionally and releasably hold the upper casing l5 at the desired angular position relative to the cartridge I l The upper leaf it of the hydraulic hinge is made integrally with the part-casing 55 adapted to flt over the upper portion of the hydraulic cartridge housing ii. A sleeve hearing $55 is provided between the cartridge and the inner surface of the part-casing I5; and a hexagonal cavity I'll is provided in the upper end of the part-casing l5 adapted to non-rotatably enthe hexagonal shaft extension I'l. The cap (it is threaded into a hole in the end of the shaft extension 51' and is accessible through an opening in the upper part of the part casing l5.

The lower leaf M is preferably made integrally with the lower part-casing l3 and is adapted to fit over the lower portion of thecartridge housilig H, the cartridge being held against turning by the worm gear 20 as previously described.

The advantages of my improved holding and adjusting means for the hydraulic cartridge in the lower hinge casing Will be apparent. Minute angular adjustment may be readily made by the use of a simple socket wrench in socket 24. The helical pinion or worm will retain its position because of the low thread pitch, and will effectively key the cartridge to the lower half-casing.

Reference is made to my co-pending applications, Serial No. 35,640, filed June 20, 1948 and Serial No. 714,705, filed Dec. 7, 1946, the former application having for its subject matter the friction detent disclosed herein, and the latter application covering a hydraulic checking mechanism having a somewhat different piston construction.

I claim:

1. A hinge mechanism comprising a pair of leaves adapted for attachment to a closure and to a closure mounting frame; a cartridge having a cylindrical housing and a concentric shaft extension protruding from the upper end of said cartridge housing and containing hydraulic checking means adapted to control the relative rotary movement of said shaft extension and said cartridge housing; a hollow upper part-casing extendin from the edge of one leaf, adapted to fit over and turn on the upper portion of said cartridge housing, and to non-rotatably engage said shaft extension; a hollow lower part-casing extending from the edge of the other leaf, adapted to fit over the lower portion of said cartridge housing; and gear means on said cartridge housing cooperating with gear means on said lower part-casin adapted for adjusting and holding the relative angular positions of said cartridge housing and said lower part-casing.

2. A hinge mechanism comprising a pair of leaves adapted for attachment to a closure and to a closure mounting frame; a cartridge having a cylindrical housing and a concentric shaft extension protruding from the upper end of said cartridge housing and containing hydraulic checkin means adapted to control the relative rotary movement of said shaft extension and said cartridge housing; a hollow upper part-casing extending from the edge of one leaf, adapted to fit over and turn on the upper portion of said cartridge housing, and to non-rotatably engage said shaft extension; a hollow lower part-casing extending from the edge of the other leaf, adapted to fit over the lower portion of said cartridge housing; and worm gear teeth in the periphery of said cartridge housing and a worm pinion rotatably mounted in said lower part casing disposed to operatively engage said gear teeth to adjust and hold said cartridge angularly in relation to said lower part-casing.

3. In a removable-cartridge type door hinge in which a cartridge unit having a central shaft REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 2,203,197 Henry June 4, 1940 FOREIGN PATENTS Number Country Date 554,169 France June 6, 1923

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