US944065A

US944065A - Adjustable reclining-chair.

Info

Publication number: US944065A
Application number: US41040308A
Authority: US
Inventors: John F Wilmot
Original assignee: Individual
Current assignee: Individual
Priority date: 1908-01-11
Filing date: 1908-01-11
Publication date: 1909-12-21
Anticipated expiration: 1926-12-21

Description

J. F. WILMOT.

ADJUSTABLE REGLINING CHAIR.

APPLICATION FILED JAN. 11. 1908.

944,065. Patented Dec.21, 1909.

witnesses 2 3 Inventor UNITED STATES PATENT FFIUE.

Joint F. WILMOT, or DETROIT, MICHIGAN.

ADJUSTABLE RECLINING-CHAIR.

Specification of Letters Patent.

.la-tented Dec. 21, 1909.

To all whom at may concern:

Be it known that. l, Jonx F. \V1Lno'r, a citizen of the United States, residing at Detroit, in the county of Wayne andbtate of Michigan, have invented certain new and useful Improvements in Adjustable Reclining-Chairs, of which the following is a specification.

My invention has reference to certain new and useful improvements in an adjustable reclining chair of superior construction, simplicity, and utility and it consists of various features, their construction, combination and arrangement, as hereinafter described and claimed and illustrated in the accompanying drawings, in Which- Figure 1. is a view in vertical section showing parts in side elevation, the back frame being in upright or normal position. Fig. 2. is a View similar to Fig. l. but showing the back frame and the seat in a reclining position. Fig. 3. is a view in cross section on the line 3-3 Fig. 2. Fig. 4. is a detail view showing certain modifications. Fig. 5 is a detail view of the stop shown in Fig. 4 with a link connected therewith.

The leading feature of a chair of this nature consists in a chair frame indicated by the numeral 1, a seat frame indicated at 2, and a back frame indicated at 3. These features may be of any desired construction, my invention pertaining particularly to the method of uniting or connecting said features.

Within the scope of my invention the rear of the seat frame is made movable upward and downward. The back frame is preferably provided with an arm 4, constructed preferably with an inverted T head 5 at its lower end, one end of said head being jointedly connected with the seat frame as indicated at 6, the opposite end of the head being pivotally connected with a link 7 as shown-at 8, the opposite end of the link being jointedly connected with the chair frame as indicated at 9. It will readily be seen that the pivotal connection of the head with'the link forms the fulcrum of said levcr arm, the fulcrum being an oscillatory one, the link being pivotally connected with the head constituting a moving or oscillatory fulcrum.

The lever arm haspreferably detachable connection with the back frame. As shown the back frame is provided with a sheath 10 forming a guide to receive the upper arm of I the lever. While 1. have called the member I 7 the lever arm of the back frame, it will be seen that the entire back frame in reality i constitutes the arm of the lever.

As shown in Fig. 4. the chair frame may be provided on each side thereof with metal straps 1], and the seat frame with metal bars '12, the corresponding straps and bars being shown pivotally united at their forward ends as indicated at 13 this construction permitting the rear of the seat frame being moved up and down. If the bars 11 are employed the back frame or the lever arm of the back frame if employed will be jointedly connected with the rear ends of said bars, and the inner ends of said links would be jointedly connected with the adjacent ends of the straps' I have shown at 14 a stop, to limit the movement of the link. The same device may also form a stop for the movement of the back frame or of the lever arm attached thereto if employed. As shown in Figs. 4 and 5 it consists of an upwardly projecting arm fixedly engaged with the chair frame. It is essential that the pivotal point of the lower end of the link should be forward of the ivotal connection at the opposite end of the ink with the back frame. It will readily be seen that the connection of the chair frame and seat frame and back frame are all inside the chair frame and concealed.

The operation of the mechanism above described 1s as follows: The link connecting the back frame with the chair frame is normally in a forwardly inclined position from its connection with the back frame to its connection with the chair frame. The location of these two pivotal points of the link with the back frame and with the chair frame being arranged so that the weight of a person sitting on the seat frame tends to maintain the back frame in an upright position, while a slight pressure of the body on the back frame acts in raising the seat frame, and when properly adjusted the back frame and the seatframe will be practically balanced when used by all normal persons.

I have shown at 15 a spring to restore the back frame to normal position when no one is sitting in the chair.

I would have it understood that I do not limit myself to the use of two links, on opposite sides of the chair, to pivotally connect the back frame with the chair frame, inasmuch as the link might be located intermediate of the chair frame, the pivotal pin 9 being attached to a bar, extending across the chair frame.

It will be understood that where the arm 4 with its head 5 is employed it isto be considercd to constitute a part of the back frame. It will be noted that there are no projecting parts on the adjacent ends of the seat and back, which fact enables me to upholster the same over the described mechanism thereon and that the link 7 is always extended between the frame and the seat and back where it will not be exposed. Also that I materially simplify the device over prior devices for a like purpose.

W hat I claim as my invention is,-

1. An adjustable chair comprising a frame, a seat movable upward and downward at the rear, a back having front and rear lower angles spaced apart, means for pivotally connecting the back near its front a-ngle to the rear of the seat, a link pivoted at one end to the back near the rear angle thereof and pivoted to the frame at. the other end.

2. An adjustable chair comprising a frame, a seat movable upward and downward at the rear, a back, an inverted T-head attached to the back and having its forward arm pivoted to the seat and a link pivoted to the rear arm of the head at one end and pivoted at the other end directly to the frame.

3. An adjustable chair, comprising a frame, a seat movable upward and downward at the rear, a back having front and rear lower angles spaced apart, means for pivotally connecting the back near its front angle to the rear edge of the seat, a link n pivoted at one end to the back near the 40 rear angle thereof and pivoted to the frame at the other end, and means to limit the upward and downward movement of the seat.

4. An adjustable chair, comprising a frame, a seat movable upward and downward at the rear, :1 back, an inverted T-head detachably secured to the back and having the respective ends of the arms at the lower corners of the back, one arm thereof being pivotedto the rear upper corner of the seat, a. link pivoted to the other arm of the head at one end and pivoted directly to the frame at the other end..

5. An adjustable chair, comprising a f 'ame, aseat vertically movable at the rear, a back having front and rear lower angles spaced apart and pivoted to the seat at the front'angle, a strap on the frame, a link pivoted to the strap at one end and pivoted to the rear angle of the back at the other end, and a stop on the strap engaging the link to limit its upward movement.

,6. An adjustable chair, comprising a frame, a seat vertically movable at the rear, a back having lower front and rear angles spaced apart. and pivoted to the seat at the frontangle, a link pivoted to the rear angle of the back at one end and pivoted to the.

frame at the other end, and a stop to engage the link and limit its upward movement. In testimony whereof I have signed this specification in presence of two witnesses.

JOHN F. \VILMOT.

l-Vitnesses N. S. \VRIGHT,