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Publication numberUS773720 A
Publication typeGrant
Publication dateNov 1, 1904
Filing dateMar 6, 1903
Priority dateMar 6, 1903
Publication numberUS 773720 A, US 773720A, US-A-773720, US773720 A, US773720A
InventorsGeorge W Drury
Original AssigneeCharles A Lee, George W Drury
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Adjusting mechanism for couch head-rests, &c.
US 773720 A
Abstract  available in
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Claims  available in
Description  (OCR text may contain errors)

PATBNTED Nov. 1,1904.

No. 773,720. I 7





H M WW5 u UNTTED STATES Patented November 1, 1904.




SPECIFICATION forming part of Letters Patent No. 773,720, dated. November 1, 1904.

Application filed March 6, 1903.

To all ill/201w it 777/{LZ/ concern:

Be it known that I, GEORGE W. DRURY, of Canastota, in the county of Madison and State of New York, have invented certain new and useful Improvements in Adjusting Mechanisms for Couch Head-Rests, &c.; and Ido hereby declare that the following is a full, clear, and exact description of the invention, which will enable others skilled in the art to which it appertains to make and use the same, refer ence being had to the accompanying drawings, and to the numerals of reference marked thereon, which form part of this specification.

The object of my invention is to provide an improved supporting means for the adjustable head-rest of a couch, with means for automatically throwing out the securing mechanism in lowering the head of the couch.

The construction of this device herein illustrated is also applicable to other uses than the one in which it is shown.

In the drawings, Figure 1 shows a side elevation of a portion of a couch-frame, together with a portion of a head-rest frame and my adjusting mechanism mounted thereon. Fig. 2 shows substantially the same with the headrest portion supported at its nearly vertical position. Fig. 3 shows the same with the catch thrown out preparatory to lowering the head-rest to a horizontal position. Fig. 4 shows the parts almost at the completion of the lower operation. Fig. 5 is a plan View of a portion of the construction.

Referring to the referencenumerals in a more particular description, 1 indicates a couch-frame, and 2 the head-rest .frame. On the couch -frame is secured what may be termed the base or stationary portion 3 of my mechanism, and to the head-rest por tion is secured the movable part 4 thereof. These two parts are hinged together on a pivot at 5. The part 3 is provided substantially concentric with the pivot with the segment of ratchet-teeth 6. The movable part 4 is provided with a dog or pawl 7 pivoted to the part 4 at 8 and held in engagement with the ratchet-teeth 6 by a spring 9. Mounted on the pivot 5 is also the throw-out device, consisting of a swinging plate 10, having an arm Serial No. 146,481. (No modeh) 10, adapted to engage with a projection or 5 lug 7 on the pawl and also provided with stop projections 10 and 10, adapted to engage with a pin or fixed stop 11, secured in the stationary part 3.

It will be observed that the swinging part 5 5 4 can be moved, with the head-rest portion, from a horizontal position to nearly a vertical position, in which movement the pawl 7 is moved around over the segment of teeth 6, and the pawl will engage at any point in the segment and support the head-rest at its desired angle. In order to lower the head-rest, it will be moved nearly or quite to a vertical position, in which case the lug 7 on the pawl is thrown onto the end of the arm 1O of the throw-out device, which throws the pawl out from engagement with the ratchet-teeth, as shown in Fig. 3. hen the pawl is thrown out, the head-rest can then belowered, the throwout device turning around on the pivot 5 until the stop-arm 1O comes in contact with the stop- 11, which limits this movement of the throwout device to an arc of movement of less extent than the arc of movementof the movable part4: and its pawl 7, and as the pawl is capable of a greater movement in this direction it is forced off from the end of the arm 10 and engages the segment of ratchet-teeth, where the head-rest is supported in its substantially horizontal position. In the upward movement of the head-rest portion of the device the throw-out part 10 is moved around on the pivot 5, on which it freely rotates until the stop-arm 10 comes in engagement with the stop 11, which limits this movement, and of course the pawl is then forced onto the upper end of the arm 10, as before described.

Of course it will be understood that asimilar device to that illustrated is provided on each side of the couch, and the device is comparatively small and compact and may be easily covered with upholstering, and thus present no objectionable appearance.

I/VhatI claim as new, and desire to secure by Letters Patent, is 95 1. An adjusting device for movable couchsections and the like, comprising a stationary part having a toothed segment, a movable part pivoted on said stationary part and having a pawl engaging said toothed segment, a throw-out device pivoted concentrically with but independently of said movable part and adapted to disengage said pawl from said segment, and means for limiting the movements of said illll'OW OLlB device.

2. An adjusting device for movable couchsections and the like, comprising a stationary part having a toothed segment, a movable part pivoted on said stationary part and having a pawl engaging said toothed segment, a throwout device pivoted concentrically with but independently of said movable part, and adapted to disengage said pawl from said segment; the arc of movement of said throw-out device being less than the are of movement of said movable part.

3. An adjusting device for movable couchsections and the like, comprising a stationary part 3 having a toothed segment 6, a movable part 4: pivoted to said part 3, a pawl 7 carried by said movable part 4 and adapted to engage said toothed segment 6, and a throw-out device 1O pivoted concentrically With but independently of said movable part 4:; said throwout device having a pawl-engaging lug 10 to actuate said pawl '7, and limiting-stops 10 10" to confine the movement of the throw-out device to an arc of less length than the arc of movement of said movable part.

In witness whereof I have atfixed my signature, in presence of two Witnesses, this 27th day of February, 1903.

GEORGE W. DRURY. Vitnesses:


Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2539812 *Sep 2, 1948Jan 30, 1951Virgil P CarrickChair and sofa hinge
US2625693 *Dec 10, 1948Jan 20, 1953Progress Spring Bed LtdSofa bed hinge
US2627613 *Aug 18, 1947Feb 10, 1953No Sag Spring CoBed-divan hinge
US2812802 *Aug 9, 1955Nov 12, 1957Nat Seating CoAdjustable head rest
US2830653 *Dec 11, 1956Apr 15, 1958Gaugler Herman WAdjustable furniture support hardware
US3232136 *Dec 22, 1960Feb 1, 1966Bahmuller WilhelmAdjustable hinge fitting for collapsible stands, reclining chairs, and the like
US3304107 *Aug 6, 1962Feb 14, 1967Bahmuller WilhelmAdjustable joint, especially for chairs, beds, cots, and the like
US3368847 *Aug 29, 1966Feb 13, 1968Zealand Engineering Company LtAdjustable self-locking joints
US3412420 *Jun 30, 1966Nov 26, 1968United Carr IncHinges
US4130028 *Jun 9, 1977Dec 19, 1978Angel MorkPawl-and-ratchet catch
US4230414 *Oct 10, 1978Oct 28, 1980Uop Inc.Ratchet-action hinge device
US4370898 *Aug 20, 1980Feb 1, 1983Toyoto Jidosha Kogyo Kabushiki KaishaAdjustable fastening device
US4421035 *Apr 14, 1981Dec 20, 1983Triumph-Adler A.G. Fur Buro-Und InformationstechnikApparatus for locking a keyboard at selected inclinations to a horizontal reference
US4558903 *Sep 22, 1983Dec 17, 1985Tachikawa Spring Co., Ltd.Angle adjustment device of a movable body for a vehicle seat
US4576411 *Feb 2, 1984Mar 18, 1986Tachikawa Spring Co., Ltd.Vehicle seat
US4621864 *Dec 13, 1984Nov 11, 1986Milsco Manufacturing CompanyTiltable arm rest assembly and mounting and operating means therefor
US4709961 *Sep 29, 1986Dec 1, 1987Milsco Manufacturing CompanySelf-releasing ratchet-type seat adjustment
US4978171 *Nov 13, 1989Dec 18, 1990Ikeda Bussan Co., Ltd.Arm rest device for use with vehicular seat
DE1123443B *Jun 3, 1958Feb 8, 1962Guenter RauschenbergerGelenk, insbesondere fuer zusammenlegbare Feld-Sitze, Liegen od. dgl.
DE1196828B *Jun 26, 1963Jul 15, 1965Guenter RauschenbergerGelenk, insbesondere fuer zusammenlegbare Feld-sitze, Liegen od. dgl. mit Rastensegment, Klinke und Schleppscheibe
DE1224570B *Feb 6, 1962Sep 8, 1966Rene RamillonEinstell- und Arretierungssystem fuer relativ zueinander verschwenkbare Hebel
EP2689761A1Jul 26, 2012Jan 29, 2014Fundación para la Investigación del hospital Universitario y Politécnico de la FeStretcher with a movable headrest, its use and a movable headrest assembly for stretchers or beds
Cooperative ClassificationB60T7/105