US1182125A - Chair. - Google Patents

Description

W. J. WHITEHEAD.

CHAIR.

APPLICATION HLED NOV. 25, 1914.

Patented May 9, 1916.

2 SHEETSSHEET I.

- Subewtoz WILLlHM d .wHfTe-Hseo W. J. WH-ITEHEAD.

CHAIR.

APPLICATION FILED Nov. 25. 1914.

Patented May 9,1916.

2 SHEETSSHEET 2.

WILLIAMJWHWEHEAD flttozmw i W L IAM J. wnirnnnan, orsrnrnorrnrn,rarssouni,

e s ate m n Letters Patent. Patent d M 9,1915;

Application filed November 25, 1914. Serial No. 873,888.

To all iohom it o nay concern: j s Be it known that I, WILLIAM J. WHITE- nnan, a citizen of the United States, residing at Springfield, in the county of Greene and State of Missouri, have invented certain new and useful Improvements in Chairs,of which the followingis a specification, reference being had to the accompanying draw- The invention has for its primary object to providea chair having the abovenoted general structural characteristics which is partlcularly. deslgned for use upon vehicles,

whereby the same may be very easily and quickly'adjusted so as to occupy a minimum of space, orjextended sothat the-occupant may recline thereon.

scription and The invention has for another and more specific object to provide an improved construction of hinge joint which connects the several adjustable parts of thechair.

It is another object of my invention to produce an adjustable chairorseat which is" exceedlngly slmple in ts construction, maybe manufactured at small cost, and 1S highly serviceable and convenient in practical use.

lVith the above tures of construction, combination and arreferred to and more particularly pointed out in the specification and claims.

For a full understanding of the invention, reference is tobe had to. the following deaccompanying drawing, in which I Figure liis a side elevation, partly in section illustrating an adjustable chair. c0nstructed in accordance with the preferred seat at opposite sides is providedwith inwardly extending hollow bosses 11, and in these bosses the male hinge members on one end ofa leg rest, indicated at 25, are adapted to be engaged and secured in precisely the same manner'as that above described.

embodiment of my invention; Fig. 2 is a section taken on the line*22 of. Fig, 1; and Fig: 3 is a'section taken on the line 33ofFig.1. if

Referring in detail to thedrawing, 5 designates two similar side frames which are suitably secured upon the" respective side walls'of the vehicle body. Each ofthese side frames includes a'horizontally disposed .bar 6 and an upwardlyprojecting extension 7 7' at one end of said horizontal bar. The I and other objects 1 in view, the 'inventlon consists in novel fear particular purpose of this frame extension will be hereinafter fully explained.

The seat of the chair, shown at 8, is provided at opposite sides and adjacent to its forward end with the depending brackets which are formed with inwardly projectlng hollow;taperingcylindrical bosses 10.

The forward end of the seat 8 is also provided with similar bosses 11. Each of the horizontal portions 6 of the side framesb is providedadjacent its forward end with an opening 12 through which a threaded rod 13 extends. Nuts 14 are threaded upon this rod and disposed aboveand below the horizontal bar6. Upon the upper end of the rod 13 the male hinge member 15 is formed,

adapted to extend through an opening 19 provided in'the base ,wall of the boss 10.

The annular walls ofthis boss and the ex- 1g tension ,16 are disposed in parallel relation and between the same a bushing or gasket 20, preferably of sheet copper is disposed. Any other suitable friction material may, however,-, be substituted for this copper sheet. The inner end of the hingebolt 18 is formed'with an enlarged head 21, between which and the end of the bearing sleeve 17,

washer plate 22 is arranged. A heavy coil spring 23 isdisposed upon the sleeve 17 betweenthis washer plate and the base of the hollow extension 16,5saidv springacting to normally force said extension against the friction sheet 20 and hold said friction sheet tightly against thewalls of the boss 10.. Upon the outer end'of the pivot bolt 18 a nutZ is threaded for the purpose of securely clamping the parts. together.

As above stated, the forward end of the The detaihconstruction of this hinge joint between the leg rest and the seat will not therefore be further referred to. The seat 8 is also formedat its rear end and upon opposite sides with the outwardly project chair has formedupon its lower end and at opposite sides thesolid conically shaped projections 28, each of which is provided in its outer face with a recess 29. The extension 7 on each of the side frames 5 1S provided in its opposite faces with the tapering recesses or seats and 31, which are designed to receive the extensions 26 and 28 on the seat 8 and back 27 respectively of the chair. The projection 26 of the chair seat is formed with a sleeve 32 through which the hinge bolt 38 is disposed. The upper end of the chair frame 7 is providedw'ith an opening 34: and the conical projection 28 on the chair back with "an opening 35. These openings coincide with the bore of the sleeve 32 and through the same said hinge bolt extends. A head 36 is formed on the inner end of the bolt 33, between'which and the base of the hollow'extension 26 on the chair seat the coil spring 37 is arranged.

A sheet of friction metal 38 is disposed between theperipheral face of the conical extension 28 of the chair back and the opposed surface of the recess 31. A nut 89 is threaded up the outer end of the bolt 33, whereby the several parts may be securely clamped together and held against relative movement. 7

The'free end of the leg rest 25 may be provided with a foot pad, indicated at 40, preferably removably attached to the leg rest and extending outwardly therefrom when the leg rest is not in use. The upper end of the chair back 27 is equipped with a removable and adjustable head rest 41, which may be mounted and adjusted in any approved manner. This head rest, as well as the chair back, the seat, and the leg rest, are provided with suitable cushions, indicated at 412.

From the above description taken in connection with the accompanying drawing, the construction, manner of operation, and several advantagesof my invention will be clearly understood. When it is desired to adjust the chair, the hinge bolts 18 and 33 at opposite sidesof the chair are loosened. The nuts 14 are then adjusted upon the rod 13 to move said rod vertically anddispose the seat 8 in the desired inclined position with respect to the supporting frames 5. The nuts 14 are then adjusted into clamping adjustment against the frame bar 6 to securely hold the rods 18 against further movement. The nuts are then threaded inwardly upon the bolts 18 against the brackets 9 so as to draw the extensions 16 on the hinge members 15 into the hollow bosseslO to tightly clamp and bind the metal friction sheet 20 between the opposed walls thereof. The chair back 27 is now tilted to the desired position. The coil springs 37 have suflicient tensile strength to be used as an ordinary chair, and

. to thes'eat Sin a'similar manner.

It will thus be seen that I have devised an improved construction of binge joint between the several adjustable parts of the chair which will also securely hold the several parts against relative movement upon the hinge bolts when the nuts are securely tightened thereon. The necessity of providing additional looking or holding means is consequently avoided. It will therefore be apparent that my improved chair may be manufactured at comparatively small cost,

and is also highly durable and reliable in practical use. 1

While I have referred to the chair as particularly designed for use upon vehicles, it

will be understood that the same may. also Li);

readily moved from place to place.

While I have above described the ipreferred form, construction, and arrangement of'the several elements employed, it will be understood that the device is,,nevertheless, susceptible of considerable modification therein, and I therefore reserve the privilege of resorting to all such legitimate changes as may be'fairly embodied within the spirit and scope of the claimed. 7 e

'What I claim is:

1. A hinge joint of the character deinvention as scribed including a frusto-conical female member and a complementary male member of hollow form, said members, each being axially provided with an opening and the male member having a sleeve projecting inwardly from said opening, a bolt loosely disposed through the axial openings of the coupling'members and provided with ahead on one end, a frusto-conical metal friction sheet disposed between the contiguous body walls of the coupling members, a nut threaded upon the other endof the bolt, and a spring arranged within the hollow male member upon the sleeve thereof acting to hold the coupling members in frictional engagement with the friction sheet I when the nut isloosened.

2. A hinge joint of the character de scribed including a stationary part provided with tapering recesses in its opposite faces and having a bolt receiving opening, movable parts one of which is provided with a conical shaped hollow boss for engagement within one of said recesses, the othermovable part being provided with a solid conically shaped projection for engagement V within the other of said recesses, said solid movable part of the joint and cooperating with said bolt to move the same in one direction when the nut is loosened and hold said boss and projection against casual movement with respect to the stationary part. V

In testimony whereof I hereunto aflix my signature in the presence of two Witnesses.

WILLIAM J. WHITEHEAD. Witnesses:

GEO; T. HINE, J ULIUs SEIFERT.

Copiea of this patent may be obtained for five cents each, by addressing the Commissioner at Patents,

Washington, D. 0.

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