US2843182A

US2843182A - Adjustable chair seat

Info

Publication number: US2843182A
Application number: US577785A
Authority: US
Inventors: Ross G Stallard
Original assignee: Individual
Current assignee: Individual
Priority date: 1956-04-12
Filing date: 1956-04-12
Publication date: 1958-07-15
Anticipated expiration: 1975-07-15

Description

July 15, 1958 R. cs. STALLARD ADJUSTABLE CHAIR SEAT Filed April 12, 1956 .zauazaaa 'IIII IIIIIIII"IIA INVENTOR asi'a [lo '7- d ATTORNEY$ United States Patent ADJUSTABLE CHAIR SEAT Ross G. Stallard, Vallejo, Calif.

Application April 12, 1956, Serial No. 577,785

1 Uaim. (Cl. 15588) The present invention relates to adjustable chair seats, and more particularly, to chair seats which can be adjusted without altering the normal appearance of the chair.

The primary object of the invention is to provide an adjustable chair seat of the type adapted for interim use between high chairs and standard size chairs.

Another object of the invention is to provide an adjustable seat for chairs which can be adjusted without the use of tools of any kind.

A further object of the invention is to provide an adjustable chair seat utilizing a cam lock to hold the seat in adjusted position against displacement.

A still further object of the invention is to provide an adjustable seat for chairs which is inexpensive to manufacture, easy to use and durable in service.

Other objects and advantages will become apparent in the following specification when considered in the light of the attached drawings, in which:

Figure 1 is a side elevation of the invention.

Figure 2 is a transverse cross-section taken along the line 2-2 of Figure 1, looking in the direction of the arrows.

Figure 3 is an enlarged fragmentary vertical crosssection taken along the line 33 of Figure 2, looking in the direction of the arrows.

Figure 4 is a horizontal cross-section of a fragment of the structure taken along the line 44 of Figure 3, looking in the direction of the arrows. V

Figure 5 is a view similar to Figure 3 illustrating a modified form of the invention.

Figure 6 is a fragmentary side elevation illustrating the locking teeth on the arm shown in the modified form of the invention in Figure 5.

Referring now to the drawings in detail wherein like reference numerals indicate like parts throughout the several figures, the reference numeral 10 indicates generally a chair constructed in accordance with the invention. The chair 10 is formed of tubular material and consists of a pair of forward legs 11 and 12,

horizontal frame members

13 and 14, a pair of

rear legs

15 and 16, a forward cross-bar 17, and a rear cross-bar 18. A back generally indicated at 19 consists of a pair of

upright members

20 and 21 secured to the

horizontal members

13 and 14. The

upright members

20 and 21 are connected at their upper ends by a horizontal member 22 and carry a back panel 23 therebetween. The

horizontal frame members

13, 14, the forward cross-bar 17 and the rear cross-bar 18 together constitute a framework from which the

legs

11, 12, 15 and 16 depend.

A seat structure, generally indicated at 24, consists of a pair of parallel

horizontal members

25 and 26 joined at their forward ends by means of a cross-bar 27. The rear 2,843,182 Patented July 15, 1958 "ice terminal end portion of the horizontal member 25 is formed into a loop 28 loosely engaged over the upright member 20, as best illustrated in Figure 2. The terminal rear end portion of the horizontal bar 26 is formed into a loop 29 loosely engaged over the upright frame member 21, also as best illustrated in Figure 2.

A downwardly and rearwardly curving cam bar 30 is secured to the rear end portion of each of the

horizontal members

25 and 26 and terminates in a pair of arcuate feet 31. A rubber pad 32 is secured to the inner surface of the feet 31 in position to engage the

upright bars

20 and 21. A seat panel 33 is secured to the

horizontal bars

25, 26 and 27 to provide a seating surface. Downward pressure on the seat pad 33 causes the feet 31 to engage and lock to the

bars

20 and 21 holding seat structure 24 in adjusted position with relation to the back 19.

Obviously, the seat 24 can be adjusted with relation to the back 19 by lifting the outer end freeing the feet 31 from the

upright frames

20 and 21 permitting the

loops

28 and 29 to be slid thereon.

Referring now to the modification illustrated in Figures 5 and 6, the back structure, generally indicated at 19a, has upright members, one of which is illustrated at 21a, a seat structure, generally indicated at 24a, and having horizontal member 26a, loop 29a, and cam bar 30a. The upright member 21a is provided with a plurality of serrated teeth 34 on its forward surface in position to be contacted by the terminal rear portion of the cam bar 3011.

The terminal rear portion of the cam bar 30a is like-' wise provided with a plurality of serrated teeth 35 which are adapted to cooperate with the serrated teeth 34 to lock the seat 24a in adjusted position on the back 19a.

It can readily be seen that the seat provided by either of the forms of the invention disclosed above will accommodate a child during the years of growth separating the high chair and conventionally sized chair ages.

Having thus described the preferred embodiments of the invention, it should be understood that numerous structural modifications and adaptations may be: resorted to in addition to those disclosed without departing from the scope of the appended claim,

What is claimed is:

A chair comprising a plurality of legs, a framework securing said legs together, a back extending upwardly from said framework, said back including a pair of spaced upright tubular members connected at their upper end by a horizontal member, a seat structure including a pair of rigid integral loops loosely fitting respectively over said tubular members, a pair of downwardly and rearwardly curving cam bars integrally carried by said seat structure in a position below said loops and in fixed relation thereto, an arcuate foot portion formed integrally on the lower end portion of each of said cam bars, said foot portions having a surface bearing against said tubular members to releasably lock said seat structure in a vertically adjusted position, and a resilient pad fixedly secured to said surface of each of said foot portions.

References Cited in the file of this patent UNITED STATES PATENTS 1,039,647 Carter Sept. 24, 1912 1,228,249 Sautier May 29, 1917 FOREIGN PATENTS 595,508 Great Britain Dec. 8, 1947