US113967A - Improvement in revolving chairs - Google Patents
Improvement in revolving chairs Download PDFInfo
- Publication number
- US113967A US113967A US113967DA US113967A US 113967 A US113967 A US 113967A US 113967D A US113967D A US 113967DA US 113967 A US113967 A US 113967A
- Authority
- US
- United States
- Prior art keywords
- improvement
- chair
- chairs
- seat
- arm
- 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
- 241000239290 Araneae Species 0.000 description 8
- 210000003414 Extremities Anatomy 0.000 description 6
- 239000000203 mixture Substances 0.000 description 4
- 102100002378 RTTN Human genes 0.000 description 2
- 101700029166 RTTN Proteins 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000036633 rest Effects 0.000 description 2
- 230000000284 resting Effects 0.000 description 2
- 239000010959 steel Substances 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
- A47C3/026—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
-
- 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
Definitions
- This invention relates to an improvement in the construction ot' chairs, where it is desired to convert the ordinary chair into a tilting one, and the improvement is as equally applicable to stationary as to rotatin g or revolving chairs.
- the invention consists in the combination and arrangement of its principal operative parts, all construe-ted as more fully hereinafter described.
- A represents a spider, secured to the screw a of a rotating chair; or it may be secured directly to the supports ot' the chair in any convenient way, when the chair is not designed to rotate.
- This spider is constructed with four arms, b c d e, in the general form shown in the drawing, the arm b turning up at its outer extremity to form a support for the front side of the chair-seat the arms c d terminating in journals in the boxes B, which are secured, one at each side, to the under face of the chair-seat frame, the arm e having a downward curve from near the center; then, turning upward, its outer extremity terminates in an upward projection to form a support for the rear side of the chairframe, at a lower plane than the support furnished by the arm b.
- the arm b is provided with a fulcrum, h, which is adjustable vertically by means of the set-screw m., which passes up through said arm and engages with the fulcrum for that purpose.
- a steel spring, C is secured near the outer extremity of the arm b by any convenient dcvice, and thence extending rearward over and resting upon the top of the fulcrum. Its opposite end rests against the under side of the rear of the seat trame and forms a support therefor, retaining the seat in a horizontal position, except when the weight ot' the occupant is thrown against the back, when the spring gives and allows the chair to be tilted backward.
Landscapes
- Health & Medical Sciences (AREA)
- Dentistry (AREA)
- General Health & Medical Sciences (AREA)
- Chairs Characterized By Structure (AREA)
Description
Patented April 25, 187i.
Mxwxnw www M.;
R1 t um UNITED STATES PATENT OEEIcE.
FRANKLIN BARBER, OF DETROIT, MICHIGAN.
IMPROVEMENT IN REVOLING CHAIRS.
Specication forming part of Letters Patent No. 113,962', dated April 25, 1871.
To whom t may concern:
Beit known that I, FRANKLIN BARBER, of Detroit, in the county of Wayne and State of Michigan, have invented a new and useful Improvement in Revolving Chairs; and I do declare that the following is a true and accurate description thereof, reference being had to the accompanying drawing and to the letters of reference marked thereon, and being a part of this specification, in which my invention is shown in perspective, with the upper portion ot' the chair shown in dotted lines, and with the seat removed.
The nature of this invention relates to an improvement in the construction ot' chairs, where it is desired to convert the ordinary chair into a tilting one, and the improvement is as equally applicable to stationary as to rotatin g or revolving chairs.
The invention consists in the combination and arrangement of its principal operative parts, all construe-ted as more fully hereinafter described.
In the accompanying drawing, A represents a spider, secured to the screw a of a rotating chair; or it may be secured directly to the supports ot' the chair in any convenient way, when the chair is not designed to rotate. This spider is constructed with four arms, b c d e, in the general form shown in the drawing, the arm b turning up at its outer extremity to form a support for the front side of the chair-seat the arms c d terminating in journals in the boxes B, which are secured, one at each side, to the under face of the chair-seat frame, the arm e having a downward curve from near the center; then, turning upward, its outer extremity terminates in an upward projection to form a support for the rear side of the chairframe, at a lower plane than the support furnished by the arm b.
The arm b is provided with a fulcrum, h, which is adjustable vertically by means of the set-screw m., which passes up through said arm and engages with the fulcrum for that purpose.
A steel spring, C, is secured near the outer extremity of the arm b by any convenient dcvice, and thence extending rearward over and resting upon the top of the fulcrum. Its opposite end rests against the under side of the rear of the seat trame and forms a support therefor, retaining the seat in a horizontal position, except when the weight ot' the occupant is thrown against the back, when the spring gives and allows the chair to be tilted backward.
When the weight of the occupant is relieved from the back the spring compels the seat to resume its original position, the seat being so journaled to the proper arms of the spider as to allow of these movements.
What I claim as my invention, and desire to secure by Letters Patent, is
In a rocking chair, the combination of the spider A, boxes B, spring G,fu1cru1nh, and set-screw m, all constructed, arranged, and op erating substantially as described and shown.
FRANKLIN BARBER.
Witnesses Tnos. S. SPRAGUE, H. IP. EBERTs.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US113967A true US113967A (en) | 1871-04-25 |
Family
ID=2183431
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US113967D Expired - Lifetime US113967A (en) | Improvement in revolving chairs |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US113967A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2478112A (en) * | 1944-07-20 | 1949-08-02 | Heywood Wakefield Co | Adjustable rocking chair |
| US5599064A (en) * | 1995-07-27 | 1997-02-04 | Telescope Casual Furniture Co. | Swivel rocker |
| US20060071523A1 (en) * | 1992-06-15 | 2006-04-06 | Stumpf William E | Office chair |
-
0
- US US113967D patent/US113967A/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2478112A (en) * | 1944-07-20 | 1949-08-02 | Heywood Wakefield Co | Adjustable rocking chair |
| US20060071523A1 (en) * | 1992-06-15 | 2006-04-06 | Stumpf William E | Office chair |
| US7594700B2 (en) | 1992-06-15 | 2009-09-29 | Herman Miller, Inc. | Contoured seating structure |
| US5599064A (en) * | 1995-07-27 | 1997-02-04 | Telescope Casual Furniture Co. | Swivel rocker |
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