US968871A - Chair or seat. - Google Patents

Description

H. W. MOORE. CHAIR 0R SEAT. APPLICATION FILED SEPT. 10, 1909.

Patented Aug.30,1910.

STATES FATENT GFFICE.

HARRY W. MOORE, 0F ATCHISON, KANSAS.

CHAIR OB SEAT.

To all whom it may concern:

Be itknown that I, HARRY W. MOORE, a citizen of the United States, residing at Atchison, in the county of Atchison and State of Kansas, have invented a new and useful Chair or Seat, of which the following is a specification.

This invention relates to chairs of that general class shown and described in United States Letters Patent, issued to me on the 21st day of January, 1908, Number 877,216.

The object of the invention is to generally improve the construction of the chair by the provision of first a spring locking mechanism which automatically looks when the seat of the chair is lowered to operative position, second by the provision of springs seated on the pivotal connections between the seat and chair legs and which operate to force the seat to its raised or folded position simultaneously with the release of the spring locking mechanism, and third by the provision of springs seated on the pivotal connections between the intersecting legs of the chair and which operate to draw the legs together and cause the chair to collapse into a fiat compact form simultaneously with the release of the spring locking mechanism.

IVith the above advantages and other objects in view, which will appear as the nature of the invention is better understood, my invention embraces the novel details of construction and combination of parts illustrated in the accompanying drawing, shown in the following specification and set forth in the appended claim.

In the accompanying drawing, Figure 1 is a longitudinal sectional view of a chair constructed in accordance with my invention. Fig. 2 is a side elevation of my improved chair shown in folded position. Fig. 3 is a front elevation of the chair in folded position. Fig.4 is an enlarged elevation of the lock and its lever, the adjoining portions of the chair being shown partly in section and partly in elevation.

In a more detailed description of my invention in which like characters of referonce designate similar parts in the views shown, 1 designates a pair of spaced uprights or standards having their lower ends provided with laterally extending flanges 2 which rest upon the floor and are secured thereto by screws or similar fastenings 3.

Pivotally mounted for vertical 'movement on the standards are intersecting legs 4 and 1 Specification of Letters Patent.

Application fi1ed September 10, 1909.

Patented Aug. 30, 1910.

Serial No. 517,043.

5. The pivot pins 6 of the legs are slidingly mounted in elongated slots or recesses 7 formed in the standards so that when the legs are drawn together, the pivot pins are free to slide upward in the slots and thus permit a vertical movement of the legs. The inner ends of the pivot pins are threaded for engagement with retaining nuts 8 which bear against the adjacent faces of the slots and support the legs in their elevated position when the chair is folded.

Seated on the shanks of the pivot pins between the intersecting legs are spiral springs 9, the terminals 10 of which extend along the opposed faces of the intersecting legs 4 and 5 and exert an inward pressure on the legs whereby to normally hold the same drawn together in their elevated or released position. The terminals of each spring may be secured to the opposed faces of the intersecting'legs in any suitable manner, the connections in this instance being shown by lugs 11 projecting from the lateral faces of the legs and upon which the termi-' nals bear and freel slide when the legs are being raised or lowered. In order to permit the spring to work easily and freely, one or both of the intersecting legs may be undercut, as shown at 12.

Pivotally secured to the upper end of the legs 4 by a pivot pin or similar connector 13 is a seat 14, the free end of which normally rests upon the shoulders 15 formed in the opposite legs 5.

Seated upon the shank of each pivot pin 13 is a spiral spring 15, one terminal of which extends along the lateral face of the seat and terminates in a loop 16 that loosely engages a lug 17 projecting laterally from the face of the seat. The other terminal 18 of each spring extends along the supporting leg 5 and bears upon the lug 11 carried by said leg. The spring 15 exerts an upward pressure on the seat 14 and operates to normally hold the seat in its raised or released position.

Combined with the legs 5 and preferably formed integral therewith is a back 19 provided at its lower end with reduced extensions or locking lugs 20 which engage seating recesses 21 formed in the adjacent portions of the legs 4.

For locking the legs and seat in operative position a spring locking mechanism is provided which will now be described.

Secured to the lower face of the trans verse back brace 22 is a spring catch 23 having a yielding tongue 24 for engagement with a keeper 25 secured to the under surface of the seat. Pivoted at 26 on a standard 27 suitably secured to the back brace 22 in a bellcrank lever 28, one end of which engages the stem 29 of the spring catch, and the other end of which engages the terminal eye of a rod 30. The rod 30 extends upward along the rear face of the back of the chair and projects through the upper back brace 31, as shown, and terminates in a but-ton 32 which provides a convenient grip for the hand of the operator.

To move the seat to operative position, a downward pressure is exerted on said seat until the rear end bears upon the stop shoulder 15 when the spring catch will automatically engage the keeper and lock the parts in this position. To release the parts from this locked position, it is simply necessary to exert a downward pressure on the button of the rod when the rod will depress the bellcrank lever and cause the yielding tongue of the spring catch to be withdrawn from the keeper, the springs seated on the pivotal connections between the seat and forward legs 4 immediately operating to raise the seat to its elevated or released position and the springs seated on the pivotal connections of the intersecting legs operating to draw the legs together and raise the same to elevated or released position simultaneously wit-h the folding up of the seat.

The chair is provided with suitable arm rails each preferably formed in two sections 33 and 34, pivotally connected together by a hinged joint 35, the free ends of one of the sections being swiveled in the seat and the free end of the other section being swiveled on the back as shown.

A shelf or hinged leaf 36 is secured to the the upper back brace of the chair, as shown, in order that the chair may be converted into a school desk, if desired. The shelf is supported in operative position by a hinged brace 37 by means of which the leaf may be folded downward against the back of the chair when desired.

Casters 38 are secured to the chair legs in any preferred manner and operate to roll along the floor when the chair is being unfolded or folded so as not to mar or scratch the varnish or finish of the floor.

From the foregoing description, taken in connection with the accompanying drawing, it is thought that the construction and operation of my invention will be easily understood without a more extended explanation, it being understood that various changes in the form, proportion and minor details of construction may be made without sacrificing any of the advantages or departing from the spirit of the invention.

\Vhat is claimed is:

In combination, a folding chair having a pair of crossed legs, a tension device adapted to normally hold the legs in folded position, a back secured to one of the legs, aseat pivotally mounted upon the other of the legs, a tension device to normally hold the seat in folded position, a keeper secured to the seat, a catch secured to the back having a spring-pressed tongue engageable with said keeper for locking the seat and legs in operative position, a bell crank lever pivotally mounted upon said back and operating to release said catch from engagement with said keeper whereby to cause the simultaneous folding up of the legs and seat, and a rod slidably fitted to the chair back and extending upward therebeyond for actuating the lever.

In testimony that I claim the foregoing as my own, I have hereto aiiixed my signature in the presence of two witnesses.

HARRY W. MOORE. itnesses B. I. HUDSON, E. SHIFFLETT.

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