US360855A - John w - Google Patents

John w Download PDF

Info

Publication number
US360855A
US360855A US360855DA US360855A US 360855 A US360855 A US 360855A US 360855D A US360855D A US 360855DA US 360855 A US360855 A US 360855A
Authority
US
United States
Prior art keywords
support
teeth
seat
bar
casting
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
Application number
Publication date
Application granted granted Critical
Publication of US360855A publication Critical patent/US360855A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • A47C3/20—Chairs or stools with vertically-adjustable seats
    • A47C3/26—Chairs or stools with vertically-adjustable seats with vertical, or inclined toothed rack; with peg-and-notch mechanism
    • A47C3/265—Chairs or stools with vertically-adjustable seats with vertical, or inclined toothed rack; with peg-and-notch mechanism with rack-and-pinion gearing
    • 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
    • A47C1/022—Reclining or easy chairs having independently-adjustable supporting parts
    • A47C1/023—Reclining or easy chairs having independently-adjustable supporting parts the parts being horizontally-adjustable seats ; Expandable seats or the like, e.g. seats with horizontally adjustable parts
    • 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
    • A47C7/402—Support for the head or the back for the back adjustable in height
    • 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
    • A47C7/50—Supports for the feet or the legs coupled to fixed parts of the chair
    • A47C7/506—Supports for the feet or the legs coupled to fixed parts of the chair of adjustable 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
    • A47C7/50—Supports for the feet or the legs coupled to fixed parts of the chair
    • A47C7/506—Supports for the feet or the legs coupled to fixed parts of the chair of adjustable type
    • A47C7/5066—Supports for the feet or the legs coupled to fixed parts of the chair of adjustable type by rotation

Definitions

  • the object is the construction of a chair which is adjusted in all its parts so it can be accommodated to different-sized persons and to any required pose.
  • FIG. 1 i's aperspective View of a chair of my construction embodying my improvements.
  • Fig. 2 is a side elevation of the same, parts broken away, ⁇ showing the internal construction.
  • Fig. 3 is a sectional view on the line :v x of Fig. l.
  • Fig. 4 is a perspective view of the end of the back-supporting bar and the means for connecting itwith the back.
  • Fig. 5 is a detail perspective view of the end of the seat-bar and the seat-casting, and Figs. 6 and 7 are detail perspective views of the devices for attaching the arms to the back.
  • Fig. 8 is a detail view of the foot-rest.
  • the chair comprises the base A, having legs A2, of usual construction, and the reach A', the back B, and the seat C.
  • the seatfsupport C has its upper end reduced and fitted in a casting, c, secured to the under side of .the seat, and is provided with a series of teeth, c', at the base of the reduced end,which engage with corresponding teeth in the lower end of the casting c and hold theseat in an adjusted position against any accidental displacement.
  • the seat When it is desired to adjust the seat about its support as an axis, it (the seat) is lifted so as to disengage the teeth of the cast ing c from the teeth on the support, and the desired adjustment having been made,the seat is lowered and will be heldin such position by 'the re-engagement of the teeth.
  • the seat-support has aseries of teeth formed longitudinally on one side, and is mounted in a vertical opening in the base A.
  • the gear wheel d mounted upon a shaft D, journaled in the base to one side of the seat-support, meshes with the latter and serves to raise and A second shaft, E, journaled in the base at a distance from the shaft D, 'is providedgwith -a crank, E', on its outer end, by which it is rotated, and has a gear-wheel, e, securedthereon, which meshes with the gear-wheel d, andimpartsv motion thereto when moving the seatsupport in either direction.
  • the pawl ⁇ f engaging with the ratchetwheel ⁇ f', keyed upon the shaft D, prevents retrograde movement thereof and holds the seat-support in an adjusted position. It is keyed to a shaft, F, which projects through a side of the base, and has a handle, f2, secured to its outer end, to be grasped by the hand to disengage the paw] of said ratchet-wheel when it is desired to lower the seat-support.
  • the ratchet-segment G projects forward from the base,.and may be an integral part thereof, or separate and secured thereto, as desired.
  • the foot-rest support G is bifurcated at its upper end and embraces the ratchet-segment, to which it is pivotally secured and held in an adjusted position by the pawl g, pivoted in said bifurcated end, engaging with one of the teeth in the segment.
  • the foot-rest G" is pivoted to the lower outer end of its support G', and is adj ustably connected therewith by the set-screw g', passing through its rear portion and bearing upon the lower rear end of said support G', as shown.
  • the foot-rest has a twofold adjustment, one about its pivotal connection with the support and the other with the support.
  • the reach A has its upper end vertically apertured to receive the back-rod support H, which is adjustably held therein.
  • the shaft IOO c journaled in the upper end of the reach to one side of the vertical aperture, has one end extended and provided with a crank, a', and has a gear-wheel, ai, mounted thereon, which meshes with the teeth 7L, formed in one side of the back-rod support for adjusting the latter vertically, when required.
  • Said baclorod sup ⁇ port is held in an adjusted position by the pawl a", engaging with the ratchet-wheel a, keyed to said shaft a. rlhe rear end of said pawl is extended and projects beyond the reach, so it can be readily pressed upon and b e disengaged from said ratchet when it is desired to lower the back-rod support.
  • the head I secured to the upper end of the back rodsupport, is transversely apertured to recelvc the back rod J, which is provided with teeth on one side engaged or meshing with the gear-wheelj, secu red upon the shaft i',journaled in the head to one side of the transverse aperture, and having one end extended beyond the side of the head and provided with a cranlaf, by which said shalt is turned and an adjustment of the back-rod effected.
  • the set-screw y passing through a side of the head, is adapted to engage with said back-rod and hold it in an adjusted position.
  • the outerend of the back-rod is bifurcated, and fits between lugs 7s, extending from a casting, K, secured to the rear of the back.
  • a space is left between one side of said bifurcated end and a side of One of the lugs, in which is fitted the cam-hcad Z of thelever L, which is mounted upon a bolt passing through the lugs of said casting K and between the bifurcated end of said back-rod.
  • the sides of the back are provided with castVv ings M, which have openings m formed therein and designed to receive the projection u of a corresponding casting, N, secured to the arms, by which the latter are secured to the back in such manner that they can be readily removed when it is desired to use the chair without arms.
  • the opening mis elongated areferably, in the direction of length of the casting, and the projection nv has a corresponding elongated head, Aforming a neck between it and the casting N equal to the width of said open end.
  • the head of the projection n is passed through the opening m till the neck portion corresponds with the plane its lower end, of the set-screw interposed between said support and rest, substantially as and for the purpose set forth.
  • the combination of thc hase having a reach through the upper end of which a vertical aperturc is formed, the baek-barsupport adjust-ably held in said opening and having a transversely-apertured head, the back-bar adjustably held in the opening of said head, and the back secured to the end of the back-bar and adjustable relative thereto, substanliall y as and for the purpose set forth.

Landscapes

  • Health & Medical Sciences (AREA)
  • Dentistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Chairs Characterized By Structure (AREA)

Description

(No Model.) l l J. W. COOPER.
PHOTOGRAPHERS CHAIR.
N0. 360,855. Patented Apr. l2, 1887.
li: hun" i 1.1.. K um Imm Mmmm/N www.
NT PETERS, Phulmlhngnphsr. Washinghm. D. C.
-UNITED STATES `PATENT OFFICE.
JOHlNT COOPER, OF ATLANTA, GEORGIA, ASSIGNOR TO COLUMBUS XV." MOTES, OF SAME PLAGE.
PHOTOGRAPHERS CHAIR.
SPECIFICATION forming part of Letters Patent No. 360,855, dated April l2, 1887. Application filed October i3, 1886. y Serial No. Qlll. (No model.)
.To all whom t may concern,.- j.
Be it known that I, JOHN W. COOPER, a citizen of the United States, residing at Atlanta, in the county of Fulton'and State of Georgia, have invented certain new and useful Improvements in Photographers Chairs;
and I do declare the following to be a full,
they can adj ust the subject to any desired pos-` ture without any discomfort on the part of said subject.
The object is the construction of a chair which is adjusted in all its parts so it can be accommodated to different-sized persons and to any required pose. Y
Ihe improvementsconsist in the novel features of constructiom hereinafter more, fully set forth, claimed, and shown in the annexed drawings, in which- Figure 1 i's aperspective View of a chair of my construction embodying my improvements. Fig. 2 is a side elevation of the same, parts broken away,` showing the internal construction. Fig. 3 is a sectional view on the line :v x of Fig. l. Fig. 4 is a perspective view of the end of the back-supporting bar and the means for connecting itwith the back. Fig. 5 is a detail perspective view of the end of the seat-bar and the seat-casting, and Figs. 6 and 7 are detail perspective views of the devices for attaching the arms to the back. Fig. 8 is a detail view of the foot-rest.
The chair comprises the base A, having legs A2, of usual construction, and the reach A', the back B, and the seat C. The seatfsupport C has its upper end reduced and fitted in a casting, c, secured to the under side of .the seat, and is provided with a series of teeth, c', at the base of the reduced end,which engage with corresponding teeth in the lower end of the casting c and hold theseat in an adjusted position against any accidental displacement.
ylower it, as'occasion may require.
When it is desired to adjust the seat about its support as an axis, it (the seat) is lifted so as to disengage the teeth of the cast ing c from the teeth on the support, and the desired adjustment having been made,the seat is lowered and will be heldin such position by 'the re-engagement of the teeth.
The seat-support has aseries of teeth formed longitudinally on one side, and is mounted in a vertical opening in the base A. The gear wheel d, mounted upon a shaft D, journaled in the base to one side of the seat-support, meshes with the latter and serves to raise and A second shaft, E, journaled in the base at a distance from the shaft D, 'is providedgwith -a crank, E', on its outer end, by which it is rotated, and has a gear-wheel, e, securedthereon, which meshes with the gear-wheel d, andimpartsv motion thereto when moving the seatsupport in either direction.
The pawl` f, engaging with the ratchetwheel `f', keyed upon the shaft D, prevents retrograde movement thereof and holds the seat-support in an adjusted position. It is keyed to a shaft, F, which projects through a side of the base, and has a handle, f2, secured to its outer end, to be grasped by the hand to disengage the paw] of said ratchet-wheel when it is desired to lower the seat-support.
' The ratchet-segment G projects forward from the base,.and may be an integral part thereof, or separate and secured thereto, as desired. The foot-rest support G is bifurcated at its upper end and embraces the ratchet-segment, to which it is pivotally secured and held in an adjusted position by the pawl g, pivoted in said bifurcated end, engaging with one of the teeth in the segment. The foot-rest G" is pivoted to the lower outer end of its support G', and is adj ustably connected therewith by the set-screw g', passing through its rear portion and bearing upon the lower rear end of said support G', as shown. By this means the foot-rest has a twofold adjustment, one about its pivotal connection with the support and the other with the support.
The reach A has its upper end vertically apertured to receive the back-rod support H, which is adjustably held therein. The shaft IOO c, journaled in the upper end of the reach to one side of the vertical aperture, has one end extended and provided with a crank, a', and has a gear-wheel, ai, mounted thereon, which meshes with the teeth 7L, formed in one side of the back-rod support for adjusting the latter vertically, when required. Said baclorod sup` port is held in an adjusted position by the pawl a", engaging with the ratchet-wheel a, keyed to said shaft a. rlhe rear end of said pawl is extended and projects beyond the reach, so it can be readily pressed upon and b e disengaged from said ratchet when it is desired to lower the back-rod support.
The head I, secured to the upper end of the back rodsupport, is transversely apertured to recelvc the back rod J, which is provided with teeth on one side engaged or meshing with the gear-wheelj, secu red upon the shaft i',journaled in the head to one side of the transverse aperture, and having one end extended beyond the side of the head and provided with a cranlaf, by which said shalt is turned and an adjustment of the back-rod effected. The set-screw y, passing through a side of the head, is adapted to engage with said back-rod and hold it in an adjusted position. The outerend of the back-rod is bifurcated, and fits between lugs 7s, extending from a casting, K, secured to the rear of the back. A space is left between one side of said bifurcated end and a side of One of the lugs, in which is fitted the cam-hcad Z of thelever L, which is mounted upon a bolt passing through the lugs of said casting K and between the bifurcated end of said back-rod. By this mcans,when the lever is turned into a horizontal position, the back can be adj usted to any position desired. Then the desired adjustment ofthe back is effected, the lever is again turned into an approximately-vertical position and causes a binding between the bifureatcd end of the back-bar and the lugs ofthe cast-ings, which will hold said back in its adjusted position.
The sides of the back are provided with castVv ings M, which have openings m formed therein and designed to receive the projection u of a corresponding casting, N, secured to the arms, by which the latter are secured to the back in such manner that they can be readily removed when it is desired to use the chair without arms. The opening mis elongated, areferably, in the direction of length of the casting, and the projection nv has a corresponding elongated head, Aforming a neck between it and the casting N equal to the width of said open end. To secure the arm in place, the head of the projection n is passed through the opening m till the neck portion corresponds with the plane its lower end, of the set-screw interposed between said support and rest, substantially as and for the purpose set forth.
2. The combination, with the base having a ratchetsegment and the foot rest support having its upper end bifurcated, embracing the ratchetsegrnent and pivotally connected therewith, of a pawl pivoted within the bifureated end and engaging the segment to hold the foot-rest support at an adjusted position, the foot rest pivotal] y connected with the lower end of its supportVand the set-screw interposed between it and said support, substantially as and for the purpose described.
3. The combination, with the base having a reach vertically apertnred at its upper end, the back-bar support having teeth longitudinally thereof mounted in said opening and provided with a transverse]y-apertured head, the ratchetwl1eel supported inthe outer end of the reach for raising and lowering said backbar support, the pawl for holding the wheel at an adjusted position, the baclebar having teeth mounted in the opening of said head, the pinion for adjusting said bar, and the back carried on the outer end of the back-bar, sub'v stantially as described. h
4. The combination of thc hase having a reach through the upper end of which a vertical aperturc is formed, the baek-barsupport adjust-ably held in said opening and having a transversely-apertured head, the back-bar adjustably held in the opening of said head, and the back secured to the end of the back-bar and adjustable relative thereto, substanliall y as and for the purpose set forth.
5. rlhe combination ofthe back-bar having a bifurcated end, the casting secured to the seatback and having lugs extending therefrom embracingrthe bifurcated end of the back-bar and transversely apcrturcd, and the cam-lever pivotally supported between the lugs of the casting and interposed between them and a side of the bifureated end of the bar, substantially as and for the purpose described.
In testimony whercoi'I affix my signature in presence of two witnesses.
JOHN \V. COOPER. \Vitnesses:
C. H. GIRARDsoN, J. R. MCEHERN.
US360855D John w Expired - Lifetime US360855A (en)

Publications (1)

Publication Number Publication Date
US360855A true US360855A (en) 1887-04-12

Family

ID=2429890

Family Applications (1)

Application Number Title Priority Date Filing Date
US360855D Expired - Lifetime US360855A (en) John w

Country Status (1)

Country Link
US (1) US360855A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2619157A (en) * 1948-01-30 1952-11-25 United Aircraft Corp Antibuffet seat
US3837705A (en) * 1972-01-31 1974-09-24 Olivetti & Co Spa Office chair
US4015878A (en) * 1976-01-16 1977-04-05 Perkins Charles M Chair construction for long use comfort
US5405189A (en) * 1993-08-09 1995-04-11 Doerner Products Ltd. Chair seat back height adjustment mechanism
US7506935B1 (en) * 2008-04-17 2009-03-24 Tung Yu Oa Co., Ltd. Adjustment means for backrest
US8911021B1 (en) * 2013-09-20 2014-12-16 Paul Styke Apparatus for raising and lowering a human foot

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2619157A (en) * 1948-01-30 1952-11-25 United Aircraft Corp Antibuffet seat
US3837705A (en) * 1972-01-31 1974-09-24 Olivetti & Co Spa Office chair
US4015878A (en) * 1976-01-16 1977-04-05 Perkins Charles M Chair construction for long use comfort
US5405189A (en) * 1993-08-09 1995-04-11 Doerner Products Ltd. Chair seat back height adjustment mechanism
US7506935B1 (en) * 2008-04-17 2009-03-24 Tung Yu Oa Co., Ltd. Adjustment means for backrest
US8911021B1 (en) * 2013-09-20 2014-12-16 Paul Styke Apparatus for raising and lowering a human foot

Similar Documents

Publication Publication Date Title
US284294A (en) Dental chair
US360855A (en) John w
US344726A (en) Geobge e
US513584A (en) Surgical chair
US333052A (en) Reclining-chair
US134733A (en) Improvement in foot-rests for chairs
US320806A (en) Dental chair
US1190523A (en) Reclining or invalid's chair.
US104398A (en) Improved folding dental chair
US469569A (en) Reclining-chair
US256583A (en) Dental bracket
US5711A (en) Improvement in surgical or dental operating-chairs
US238896A (en) Thomas habdmg
US185189A (en) Improvement in invalid-chairs
US550685A (en) Piano-stool
US440610A (en) elbreg
US378433A (en) Assiguok of one-half
US165498A (en) Improvement in barbers chairs
US240888A (en) Tilting chair
US136956A (en) Improvement in chairs
US171664A (en) Improvement in chairs
US177176A (en) Improvement in horse hay-rakes
US320844A (en) Adjustable ohaie
US421330A (en) Fan attachment for chairs
US106463A (en) Improved dentists chair