US2044675A

US2044675A - Adjustable seat

Info

Publication number: US2044675A
Application number: US67357A
Authority: US
Inventors: Erwin Hugh Milton
Original assignee: Individual
Current assignee: Individual
Priority date: 1936-03-05
Filing date: 1936-03-05
Publication date: 1936-06-16
Anticipated expiration: 1953-06-16

Description

`hun@ 16, 1936. H. M. ERWIN ADJUSTABLE SEAT Filed March 5, 1936 f n //////,.A

d' '3mm HMEJ" c Stimmung/4 Patented June 16, 1936 UNITED STATES PATENT OFFICE Y Y. 2,044,675 Y ADJUSTABLE SEAT Y Hugh Milton Erwin, Dallas, Tex. Application March 5, 1936, Serial No. 67,357

Y Claims. (Cl. 155-95) The invention forming the subject matter of this `application relates to chairs, or similar supports, in which the seat may be elevated and rotated upon its axis to any desired position to 5 suit the convenience of the operator.

The object of the invention is toprovide a support with a seat capable of being raised and lowered relative to the support, and locked frictionally in any desired angular position in the support. l

Other objects of the invention will become apparent as the detailed description thereof proceeds.

In the drawing:

Figure 1 is a perspective view of a seat embodying the present invention;

Figure 2 is a vertical section of the seat taken on the line 2-2 of Figure 1; and

Figure 3 is a section taken on the line 3-3 of Figure 2. Y

As shown in the drawing, the invention comprises a substantially rectangular base member I having a bottom 2, end walls 3 and 4, a front wall 5, and a rearrwall 6. A partition 1 is suitably secured to walls of the base member substantially parallel to the bottom 2, and slightly below the top edges of the walls of the member I.

A rectangular casing 8 isseated on the partition 1 in the recess formed thereby with the walls of the base member. The casing 8 is pro- ISO vided with a top 9 provided with two circular Y apertures I0 and I I, the edges of which are bent to seat in recesses formed in the upper edges of the frusto-conical seat members I2 and I3, respectively. These members I2 and I3 form locking supports for the frusto-conical casings I4 and I5, respectively. g

Each of the casings I4 and I5 has suitably secured thereto a plate I6 forming a support for the springs I1 which are covered by circular sheet I8 of flexible material, such as is commonly used in upholstered chairs. The edges of these sheets are suitably secured in the recessed upper edges of the casings I4 and I5.

The casings I4 and I5 normally iit snugly in the members I2 and I3 and are prevented from rotation therein by their friction fit. The seats formed by the casings I4 and I5 and their associated cushions, are adapted to be raised bodily from locked contact with their supporting mem bers I2 and I3,'and to be rotated about substantially vertical axes. For this purpose, a shaft I9 is mounted to rotate in bearings 20 and 2I secured in the end walls 3 and 4. 55 Cams 22 are suitably secured tol shaft I9 directly below the centers of the cushion seats; and each cam supports a rod 23 mounted to slide through an aperture 24 in the partition 1. A vertical guide 25 clamped to the partition 1 receives the rod 23 snugly and slidably to ensure rotation of the cushioned seat about the. axis of the frusto-conical members. The upper end of the rod 23 is provided with a heavy iiange 26 which is fixed to the plate I6.

In order toeffect raising and lowering of the rods 23, and the seats supported thereby, the shaft I9 has a crank arm 21 projecting radially from the center thereof. A link 28 is pivotally connected at one end to the end of the arm 21; and, at its other end is pivoted to one end of a lever 29. The lever 29 is pivoted between its ends to a bracket 30 xed to the front wall 5 of the base member I.

The cams 22 are shaped and arranged on shaft I9 so that the cushioned seats are in lowered and locked position when the lever 29 lies in vertical position, as shown in full lines in Figure 3. A swing of the lever to the position shown by the dotted lines in Figure 3 rotates the shaft I9, and the cams thereon, so as to raise the seats out of locked contact with the seat members I2 and I3. In raised position the seats may be rotated freely about their vertical axes to suit the convenience of the persons using them.

What I claim is:

1. A base provided with a conical recess, a rod slidable and rotatable on said base coaxially with said recess, a seat fixed to one end of said rod and normally resting in said recess, and meansY connected to the other end of said rod to raise the seat from said recess.

2. A base member having a frusto-conical recess formed therein, a guide on said base member having a bore coaxial with said recess, a rod mounted to slide and rotate in said bore, a seat fixed to one end of said rod and having a frustoconical periphery adapted to fit and be locked in said recess when the rod is in lowered position in said guide, and means for raising said rod fromA lowered position to move the seat from said recess and permit rotation thereof.

3. A base member having a frusto-conical recess formed therein, a guide on said base member having a bore coaxial with said recess, a rod mounted to slide and rotate in said bore, a seat fixedV to one end of said rod and having a frustoconical periphery adapted to iit and be locked in said recess when the rod is in lowered position in said guide, a shaft rotatable in said base member, a cam on said shaft supporting said rod,

and means for rotating said shaft to effect release of the seat from locked position in said recess.

4. A base member having a frusto-conical recess formed therein, a guide on said base member having a bore coaxial with said recess, a rod mounted to siide and rotate in said bore, a seat xed to one end of said rod and having a frustoconical periphery adapted to t and be locked in said recess When the rod is in lowered position in said guide, a shaft rotatable in said base member, a cam on said shaft supporting said rod, a lever fulcrumed on said base member, and means connecting said lever to said shaft to rotate said shaft.

5. A base member havingV a frusto-concal recess formed therein, a guide on said base member having a bore coaxial with said recess, a rod mounted to slide and rotate in said bore, a seat xed to one end of said rod and having a frustoconical periphery adapted to fit and be locked in said recess when the rod is in lowered position in said guide, a shaft rotatable on said base member, a cam on said shaft supporting said rod, a crank arm extending radially from said shaft, a lever fulcrumed on said base member, and alink pivotally connecting said crank arm to said lever to effect rotation of said shaft.