US2136852A - Adjustable chair - Google Patents

Adjustable chair Download PDF

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Publication number
US2136852A
US2136852A US145377A US14537737A US2136852A US 2136852 A US2136852 A US 2136852A US 145377 A US145377 A US 145377A US 14537737 A US14537737 A US 14537737A US 2136852 A US2136852 A US 2136852A
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seat
cradle
chair
rest
adjustable
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Expired - Lifetime
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US145377A
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Fifine O Knauth
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Fifine O Knauth
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    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61GTRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G15/00Operating chairs; Dental chairs; Accessories specially adapted therefor, e.g. work stands
    • A61G15/02Chairs with means to adjust position of patient; Controls therefor

Description

Nov. 15, 1938.

E. F. KNAUTH ADJUSTABLE CHAIR Filed May 28, 1957 2 Sheets-$11991*I 1 N0v.15,193s. ERKNAUTH 2,136,852

ADJUSTABLE CHAIR Filed May 28, 1937 2 Sheets-Sheet 2 Inventor v Attorneys Patented Nov. 4l5, 17938 PATENT OFFICE p ADJUSTABLE CHAIR Ernest Frederic Knauth, deceased, late of Brooklyn, N. Y., by Fiiine O.`Knauth, executrix,

Brooklyn, N. Y.

Application May 28, 1937, Serial No. 145,377

3 Claims.

This invention appertains to new and useful improvements in furniture and more particularly to an adjustable chair, the principal object being to provide a chair which can be readily adjusted to various positions so that various massaging or other therapeutic treatments can be conveniently and efliciently given to patients resting thereon.

Another important object of the invention is to provide an adjustable reclining chairuponwhich a patient can rest and be supported in substantially any degree of reclination, with the least amount of effort on the part of. the patient or the operator.

Other important objects and advantages of the invention will become apparent to the reader of the following specification.

In the drawings:

Figure 1 represents a vertical sectional View taken substantially on the line I-I of Figure 2.

Figure 2 represents a front elevational view of the chair showing a portion broken away.

Figure 3 is a top plan View of. the cradle.

Figure 4 is a sectional view taken substantially on the line 4-4 of Figure 1.

Figure 5 is a fragmentary front elevational View of the chair showing the connection between the back sections.

Referring to the drawings wherein like numerals designate like parts, it can be seen in Figures 1 and 2, that the chair consists of a pair of sturdy side walls 5 5. At the inner side of. each of these side walls 5 is an angle iron member having a pair of upstanding post member sets 1 8, the post members being connected by the r elevated bridge piece 9, upon which the forward end of the seat section III can rest when in a horizontal position.

I-Iingedly connected as at II to the forward end of the seat section II) is the leg section I2 to the bottom side of which the rack bar I3 is pivotally connected as at I4. This rack bar`|3 being disposed through the slotted plate I5 which is connected as at II to the bridge piece 9 as shown in Figure 1, the teeth of the rack bar I3 being engageable with the plate I5 at the lower end of the slot therein for fixing the leg section I2 at any desired adjusted position with respect to the main seat section IU.

5 It will be observed in Figure 1 that rearwardly of the intermediate portion of the seat section I0 a shaft I6 is provided, the end portions of which are journaled in the upper ends of the post 8. Thus the rear portion of the seat section I0 is supported by the shaft I6 while the forward portion is supported by the bridge piece 9. A frame structure I1 is hingedly connected as at I9 to the rear end of the seat section I0 and slidably disposed in this frame I1 are the lower back cushions or sections I8 and theupper cushions or sections I9, the upper sections I 3 being connected to the lower sections I8 by pins (see Figure 2).

On the side members of the frame I1 are the barrels 2l in which the rods 22 are slidable, a

set screw or other suitable detent 23 being carried by each of these barrels ZI whereby the rods 22 can be secured in a definite adjusted position with respect thereto.

Padded or upholsteredA shoulder-embracing members 24 are hingedly connected as at 25 to the forwardly disposed end portions 26 of the rods 22 and a set screw 21 can be provided at the connection for fixing the corresponding shoulder-embracing member in position for holding a patient rmly yet not uncomfortably against the chair back.

'I'he cradle for the chair assembly is generally referred to by numeral 28 and consists of the L-shaped bars 29-29, shafts 30--3I are provided at the respective ends thereof and on these the rollers 32--32 and 33-33 respectively, are 1ocated.

A plate 34 bridges the L-shaped bars 29-29 and this plate is provided with depending ribs 35 at the longitudinal edge portions thereof so that the plunger rod 36 of the hydraulic jack 31 will always remain against some portion of the plate 34.

It can be seen that posts 38 support the cradle 28 by the cross-rod 39 and that by releasing the jack 31 and allowing the chair assembly to swing rearwardly of its own weight and the patients against the same, the cradle will rock so that the forward rollers 33 will engage the bottom of the seat section I0 as it leaves the bridge piece 9 while the back section will engage against the rear rollers 32. Thus, the leg section I2 when properly adjusted with respect to the seat section I0, and the back section can be moved as a couch section and swung to any degree of inclination desired without discomfort to the patient or inconvenience tothe operator.

While the foregoing specification sets forth the invention in specific terms, it is to be understood that numerous changes in the shape, size and materials may be resorted to without de parting from the spirit and scope of the inven tion as claimed hereinafter.

Having described the invention what is claimed as new is:

1. A chair structure comprising a seat member, means supporting said seat member including means suitably mounting the same upon a horizontal axis, a back rest pivoted to said seat for swinging movement from a normal upright posltion downwardly into alignment with said seat member, means for tilting saidseat member-v and,v

for supporting/said seat member and said back rest in various tilted positions comprising a cradle member having a pair of rigidly connected-` divergent leg portions extending forwardly 'andfrearwardly of said chair structure respectively beneath the seat member and'rearvwardlylO-fthe back rest, forward and rearward-support-members in engagement with a leg of said cradle, one

of said support members providing afxed:axis:y pivotally mounting said cradle for swingingi movement in a vertical plane, said otheiwsupport memberI .being l, adjustable in heightto hold said: cradle.in,selected,adjusted positions whereby saidleg portions. ,maybe broughtinto engagement with .sadvpimtallv .,muntedaseatamernbem and... said `backrest to adjus'tthe same in various angu-VA membersl in engagementwith-aleg ofsaid cradle, g

one of said support members providing a Xed axis pivotally mounting said cradle for swinging movement in a vertical plane, said other support member being adjustable in height to hold said cradle in selected adjusted positions whereby said leg portions may be brought into engagement with said pivotally mounted seat member and said back rest to adjust the same in various angular relations, said adjustable support including fluid operating means for effecting adjustment.

3. A chair structure comprising a seat memberymeans supporting said seat member includingumeans suitably mounting the same upon a horizontal axis, a back rest pivoted to said seat for-swinging-movement from a normal upright positionrdownwardly; into alignment with said seat member, means for tilting said seat memberland'ffor supporting said seat member and said back rest in various tilted positions comprising-a-cradle member having a pair of rigidly connecteddvergent leg fportions extending forwardly and rearwardly -,of :said-chairfstructure respectively-beneaththe lseat vmember and rearwardly of the -lback rest, forward and rearwardly support members in,- engagement withv a legaf said cradle,4 one'of said support members providing a fixed. axis pivotally mounting,l saidv'cradle for swinging movement in avertical plane, said other support memberbeing,adjustablein height to hold said cradle in Vseleotedadjusted positions whereby said-leg portionsrnay be brought into engagement with. vsaidzpivotallyv mounted seat member and said back rest to adjust the same in various angular relation, said cradle being inthe form-ofy a frameincluding side members and a cross member for the frame, said adjustable support being engaged with the said cross member.

FIFINEO. KNAUTH, Eecutrixof thetLast Will and Testament vof E.

Frederic Knauth, Deceased.

CJI

US145377A 1937-05-28 1937-05-28 Adjustable chair Expired - Lifetime US2136852A (en)

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Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2579502A (en) * 1946-01-31 1951-12-25 Lorenz Anton Reclining article of furniture
US2764224A (en) * 1953-01-28 1956-09-25 Maurer Pierre Reclining chair with foot rest articulation
US2915112A (en) * 1957-08-06 1959-12-01 William A Schwartz Chair and horizontal carrier for invalids
US3145053A (en) * 1961-10-13 1964-08-18 Vacudent Mfg Company Stool for dentists
US3203733A (en) * 1963-03-18 1965-08-31 Norman F Priest Safety devices for vehicles
US3466091A (en) * 1967-07-24 1969-09-09 Don De Grusso Seat holding device
US3761126A (en) * 1972-03-01 1973-09-25 L Mulholland Adjustable chair for children with cerebral palsy
US3764180A (en) * 1972-07-31 1973-10-09 L Mulholland Neck rest and shoulder support structure for physically handicapped patients
US3934931A (en) * 1973-04-17 1976-01-27 Kabushiki Kaisha Morita Seisakusho Dental chair
FR2418645A1 (en) * 1978-03-03 1979-09-28 Lundin Sven Dentist's chair enabling working from sitting position - pivots from leg supporting region to subject patient to incline no greater than 30 degrees
WO1985004799A1 (en) * 1984-04-19 1985-11-07 Jatab Jan Torgny Ab A method and an invalid chair for conveying a person having limited ability to move without heavy lifting from a sitting to a lying position
US4679854A (en) * 1985-03-28 1987-07-14 Keiper Recaro Gmbh & Co. Vehicle seat
US4906047A (en) * 1987-11-04 1990-03-06 Tatuya Mikami Vehicular seat
US5447356A (en) * 1990-05-01 1995-09-05 B.V. Linido Chair for disabled persons
US20100198120A1 (en) * 2007-07-24 2010-08-05 Family Co. Ltd Chair-type massage machine
US8544950B2 (en) * 2006-10-06 2013-10-01 Lufthansa Technik Ag Airplane seat
US9216676B1 (en) * 2014-07-11 2015-12-22 Ford Global Technologies, Llc Seat assembly with displaceable neckrest and neck support
US10646051B1 (en) * 2019-09-06 2020-05-12 Howard David Koseff Ergonomic sitting device and method of use

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2579502A (en) * 1946-01-31 1951-12-25 Lorenz Anton Reclining article of furniture
US2764224A (en) * 1953-01-28 1956-09-25 Maurer Pierre Reclining chair with foot rest articulation
US2915112A (en) * 1957-08-06 1959-12-01 William A Schwartz Chair and horizontal carrier for invalids
US3145053A (en) * 1961-10-13 1964-08-18 Vacudent Mfg Company Stool for dentists
US3203733A (en) * 1963-03-18 1965-08-31 Norman F Priest Safety devices for vehicles
US3466091A (en) * 1967-07-24 1969-09-09 Don De Grusso Seat holding device
US3761126A (en) * 1972-03-01 1973-09-25 L Mulholland Adjustable chair for children with cerebral palsy
US3764180A (en) * 1972-07-31 1973-10-09 L Mulholland Neck rest and shoulder support structure for physically handicapped patients
US3934931A (en) * 1973-04-17 1976-01-27 Kabushiki Kaisha Morita Seisakusho Dental chair
FR2418645A1 (en) * 1978-03-03 1979-09-28 Lundin Sven Dentist's chair enabling working from sitting position - pivots from leg supporting region to subject patient to incline no greater than 30 degrees
WO1985004799A1 (en) * 1984-04-19 1985-11-07 Jatab Jan Torgny Ab A method and an invalid chair for conveying a person having limited ability to move without heavy lifting from a sitting to a lying position
US4679849A (en) * 1984-04-19 1987-07-14 Jatab, Jan Torgny Ab Method and an invalid chair for conveying a person having limited ability to move without heavy lifting from a sitting to a lying position
US4679854A (en) * 1985-03-28 1987-07-14 Keiper Recaro Gmbh & Co. Vehicle seat
US4906047A (en) * 1987-11-04 1990-03-06 Tatuya Mikami Vehicular seat
US5447356A (en) * 1990-05-01 1995-09-05 B.V. Linido Chair for disabled persons
US8544950B2 (en) * 2006-10-06 2013-10-01 Lufthansa Technik Ag Airplane seat
US20100198120A1 (en) * 2007-07-24 2010-08-05 Family Co. Ltd Chair-type massage machine
US9216676B1 (en) * 2014-07-11 2015-12-22 Ford Global Technologies, Llc Seat assembly with displaceable neckrest and neck support
US10646051B1 (en) * 2019-09-06 2020-05-12 Howard David Koseff Ergonomic sitting device and method of use

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