US138461A - Improvement in tilting chairs - Google Patents
Improvement in tilting chairs Download PDFInfo
- Publication number
- US138461A US138461A US138461DA US138461A US 138461 A US138461 A US 138461A US 138461D A US138461D A US 138461DA US 138461 A US138461 A US 138461A
- Authority
- US
- United States
- Prior art keywords
- improvement
- seat
- hinges
- tilting
- chairs
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 229910000831 Steel Inorganic materials 0.000 description 14
- 239000010959 steel Substances 0.000 description 14
- 239000000203 mixture Substances 0.000 description 4
- 238000010276 construction Methods 0.000 description 2
- 230000000875 corresponding Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000002459 sustained Effects 0.000 description 2
Images
Classifications
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C3/00—Chairs characterised by structural features; Chairs or stools with rotatable or vertically-adjustable seats
- A47C3/02—Rocking chairs
- A47C3/025—Rocking chairs with seat, or seat and back-rest unit elastically or pivotally mounted in a rigid base frame
- A47C3/0255—Rocking chairs with seat, or seat and back-rest unit elastically or pivotally mounted in a rigid base frame pivotally mounted in the base frame, e.g. swings
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C1/00—Chairs adapted for special purposes
- A47C1/02—Reclining or easy chairs
- A47C1/031—Reclining or easy chairs having coupled concurrently adjustable supporting parts
- A47C1/032—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest
- A47C1/03261—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest characterised by elastic means
- A47C1/03277—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest characterised by elastic means with bar or leaf springs
- A47C1/03279—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest characterised by elastic means with bar or leaf springs of torsion type
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C7/00—Parts, details, or accessories of chairs or stools
- A47C7/36—Support for the head or the back
- A47C7/40—Support for the head or the back for the back
- A47C7/44—Support for the head or the back for the back with elastically-mounted back-rest or backrest-seat unit in the base frame
- A47C7/445—Support for the head or the back for the back with elastically-mounted back-rest or backrest-seat unit in the base frame with bar or leaf springs
- A47C7/4454—Support for the head or the back for the back with elastically-mounted back-rest or backrest-seat unit in the base frame with bar or leaf springs of torsion type
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C3/00—Chairs characterised by structural features; Chairs or stools with rotatable or vertically-adjustable seats
- A47C3/02—Rocking chairs
- A47C3/025—Rocking chairs with seat, or seat and back-rest unit elastically or pivotally mounted in a rigid base frame
- A47C3/026—Rocking chairs with seat, or seat and back-rest unit elastically or pivotally mounted in a rigid base frame with central column, e.g. rocking office chairs; Tilting chairs
Definitions
- This invention relates to that class of tilting chairs in which the seat with its back only yields to the inclination of the occupant, and the seat is ordinarily sustained in a horizontal position by the tension of sprin gs.
- My improvement consists in the employment, in combination with the hinges connecting the stool and the seat, of a straight steel wire, or a pair of such wires, each wire being securely fixed at one end in the stationary arm of one hinge, and extending diagonally across to the other hinge is, with its other end, fixed in the movable arm of the latter.
- Figure l is a perspective view of a tiltingchair embodying my improvement.
- Fig. 2 is aperspective view of the hinges and the diagonal steel wires, detached.
- Fig. 3 is a revolving tilting-chair with my improvement drawn in perspective.
- the seat B is elevated some distance above the top of the stool A, by the hinges O and D, which are interposed between them, and by These hinges may be of any approved or preferred -construction, the arm a of each being firmly secured to the top rail of the stool, and the arm 6 being in like manner fastened to the under side of the seat.
- the movable arms I) of the hinges are maintained in vertical positions, so as to dispose the seat horizontally, by the torsion of the steel wires E and E, which, crossing each other diagonally midway between the hinges, have their contiguous ends firmly fixed, respectively, in the movable and the stationary arms of the hinges, in the manner clearly indicated in Fig. 2.
- each wire is connected at one end with the stationary arm of one hinge, and at the other end to the movable arm of the opposite hinge, so that, in tilting the seat, each wire will be twisted, as well as slightly bent. As the occupant again assumes an upright position, or vacates the chair, the recoil or torsion of the steel wires will return the seat to its horizontal position.
- the steel wires are provided, in the example shown, with square tenons, entering corresponding sockets in the arms of the hinges but these connections may be made in any other manner, provided they are made rigid. It is evident that one of the steel wires, of sufficient strength, only, need be used to effect the result aimed at; but I prefer to employ two, arranged as described.
- My improvement is equally applicable to chairs constructed substantially as illustrated in Fig. 3, where the seat ishinged to a revolving and vertically-adjustable frame.
Landscapes
- Health & Medical Sciences (AREA)
- Dentistry (AREA)
- General Health & Medical Sciences (AREA)
- Seats For Vehicles (AREA)
Description
G. C. WINCHESTER.
Tilting Chairs Patented April 29, i873.
llilll. w Ii f/lfizhmrw I M 'AM Puora-umosRAPH/q co. MY.(asBORNE3" mums) which they are connected together.
UNITED STATES PA E vT OFFICE.
GEORGE G. WINCHESTER, OF ASHBURNHAM, MASSACHUSETTS.
IMPROVEMENT IN TILTING CHAIRS.
Specification forming part of Letters Patent No. 138,461, dated April 29, 1873; application filed December 29, 1871.
To all whom it may concern: 7
Be it known that I, GEORGE (J. WINCHES- TEE, residing at Ashburnham, in the county of Worcester and State ofMassachusetts, have invented certain Improvements in Tilting-Sprin g Chairs, of which the following is a specification:
This invention relates to that class of tilting chairs in which the seat with its back only yields to the inclination of the occupant, and the seat is ordinarily sustained in a horizontal position by the tension of sprin gs. My improvement consists in the employment, in combination with the hinges connecting the stool and the seat, of a straight steel wire, or a pair of such wires, each wire being securely fixed at one end in the stationary arm of one hinge, and extending diagonally across to the other hinge is, with its other end, fixed in the movable arm of the latter. Thus, as the seat is inclined or tilted, the wire or wires will be twisted, and return the seat to its horizontal position by their torsion the moment the occupant assumes an upright position, or vacates the chair.
Figure l is a perspective view of a tiltingchair embodying my improvement. Fig. 2 is aperspective view of the hinges and the diagonal steel wires, detached. Fig. 3 is a revolving tilting-chair with my improvement drawn in perspective.
The same letters of reference are employed in all the figures in designating identical parts.
The seat B is elevated some distance above the top of the stool A, by the hinges O and D, which are interposed between them, and by These hinges may be of any approved or preferred -construction, the arm a of each being firmly secured to the top rail of the stool, and the arm 6 being in like manner fastened to the under side of the seat. The movable arms I) of the hinges are maintained in vertical positions, so as to dispose the seat horizontally, by the torsion of the steel wires E and E, which, crossing each other diagonally midway between the hinges, have their contiguous ends firmly fixed, respectively, in the movable and the stationary arms of the hinges, in the manner clearly indicated in Fig. 2. Thus, each wire is connected at one end with the stationary arm of one hinge, and at the other end to the movable arm of the opposite hinge, so that, in tilting the seat, each wire will be twisted, as well as slightly bent. As the occupant again assumes an upright position, or vacates the chair, the recoil or torsion of the steel wires will return the seat to its horizontal position.
The steel wires are provided, in the example shown, with square tenons, entering corresponding sockets in the arms of the hinges but these connections may be made in any other manner, provided they are made rigid. It is evident that one of the steel wires, of sufficient strength, only, need be used to effect the result aimed at; but I prefer to employ two, arranged as described.
My improvement is equally applicable to chairs constructed substantially as illustrated in Fig. 3, where the seat ishinged to a revolving and vertically-adjustable frame.
What I claim as my invention, and desire to secure by Letters Patent, is-
The combination, with the hinges O and D, of the steel wire or wires E, connecting the stationary arm a of one hinge with the movable arm I) of the other, substantially as and for the purpose set forth.
In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.
GEO. O. WINCHESTER.
Witnesses:
GEORGE W. EDDY, GEORGE G. CAMPBELL.
Publications (1)
Publication Number | Publication Date |
---|---|
US138461A true US138461A (en) | 1873-04-29 |
Family
ID=2207875
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US138461D Expired - Lifetime US138461A (en) | Improvement in tilting chairs |
Country Status (1)
Country | Link |
---|---|
US (1) | US138461A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2718257A (en) * | 1953-12-01 | 1955-09-20 | Lie Finn | Tilting chair |
US2971569A (en) * | 1956-08-16 | 1961-02-14 | Bassick Co | Tiltable office chair |
US20060138837A1 (en) * | 2002-12-20 | 2006-06-29 | Stokke As | Mobile joint suitable for a sitting device |
DE102018112027A1 (en) * | 2018-05-18 | 2019-11-21 | Grammer Ag | Vehicle seat with a spring device |
-
0
- US US138461D patent/US138461A/en not_active Expired - Lifetime
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2718257A (en) * | 1953-12-01 | 1955-09-20 | Lie Finn | Tilting chair |
US2971569A (en) * | 1956-08-16 | 1961-02-14 | Bassick Co | Tiltable office chair |
US20060138837A1 (en) * | 2002-12-20 | 2006-06-29 | Stokke As | Mobile joint suitable for a sitting device |
US7434880B2 (en) * | 2002-12-20 | 2008-10-14 | Varier Furniture As | Mobile joint suitable for a sitting device |
DE102018112027A1 (en) * | 2018-05-18 | 2019-11-21 | Grammer Ag | Vehicle seat with a spring device |
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