US360855A - John w - Google Patents

Description

(No Model.) l l J. W. COOPER.

PHOTOGRAPHERS CHAIR.

N0. 360,855. Patented Apr. l2, 1887.

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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.

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