US1238087A - Folding seat. - Google Patents

Description

J. A. BAWTINHIMER & D. L. MILLER.

FOLDING SEAT.

APPLlCATlON FILED MAR. 12. I917.

Patented Aug. 28, 1917.

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JOHN ALVIN BAWTINHIMER AND DAVID L. MILLER, OF BRAN'IFORD, O1\T TARIO,

. CANADA.

FOLDING SEAT.

masher.

Specification of Letters Patent.

Patented Aug. 28, 191?.

To aZZ whom it may concern:

Be it known that we, JOHN A. BAWTIN- HIMER and DAVID L. MILLER, of the city of Brantford, in the county of Brant, Province of Ontario, Canada, have invented certain new and useful Improvements in Folding Seats, of which the following is a specification.

This invention relates to seats which automatically fold up when not in use, and our object is to devise a seat of this kind which will be simple, strong and cheap to build, and which may be used either with or with out arms and a folding back.

We attain our object by means of the con structions hereinafter described and as illustrated in the accompanying drawings in which Figure l is a side elevation of a seat con structed in accordance with our invention and having the seat down; i

Fig. 2 a similar view with the seat and back folded;

Fig. 8 a front elevation of the same;

Fig. 4 a detail of the spring hinge between the back frame and its supporting bracket; and

Fig. 5 a detail of the spring means for turning up the seat.

In the drawings like numerals of reference indicate corresponding parts in the different figures.

1 is a standard, preferably formed of a metal tube, and provided with any suitable means for securing it to a floor. A cross bar 2, preferably of metal tubing, is connected by means of a T 3 to the upper end of the standard.

4 is a seat bracket secured to the under side of the seat 5 and provided with apertured lugs or hinge knuckles 6 which have bearings on the cross bar 2. The seat may thus be easily turned down to the position shown in Fig. 1 or turned up to the position shown in Fig. 2.

To automatically turn the seat up we provide a coil spring 7 located on one arm of the cross bar 2 and engaged at one end with the seat bracket 1. The other end is engaged in a collar 8 rotarily adjustable on the cross bar and adapted to be held as adjusted by means of a cotter pin 9 adapted to be passed through any one of a plurality of holes in the collar and through a suitable hole in the cross bar. The tension of the spring may thus be readily adjusted as may be necessary.

To limit the downward movement of the seat we provide a bent brace 10 secured at each end to the under side of the seat. The rearward part of the brace is formed as an arc of a circle struck from a point in the axis of the cross bar and passes through a slot 11 in the standard 1. A shoulder 12 is formed at the forward end of the arcshaped portion adapted to engage the forward side of the standard to limit the clownward movement of the seat. The forward part of the brace departs from the areshaped form and is extended farther toward the front of the seat, preferably as a tangent to the arc, so as to support the seat well toward the front.

Collars or sleeves 13 are preferably secured to each end of the cross bar 2 to prevent lateral movement of the seat. These sleeves are preferably formed as integral parts of arm rest-s 1 1 and are secured from movement preferably by means of rivets 15. The arm rests are preferably made of metal with wooden tops 16 secured to the upper ends thereof.

For many purposes, and particularly for motormens use, the seat without either arm rests or back is sufficient. For many purposes a back is desirable.

We secure the back to the F'device by means of a bracket 17 provided with a sleeve 18 adapted to embrace the standard and held thereto in any suitable manner. Preferably the sleeve is split and a clamping bolt 19 provided, as the height of the back can thus be readily adjusted. The bracket 17 extends up behind the seat, and the seat back frame 20 is hinged thereto by means of a pin 21. Shoulders 22 and 23 are provided on the bracket and frame limiting the hinging movement of the latter in either direction.

It is preferable that the seat back should normally tend to swing forward. We therefore provide on the hinge pin 21 the coil spring 24 which fits between the bearing lugs 25 on the bracket 17. One end of this spring is engaged in one of the bearing lugs and the other end isfitted into a slot 26 formed in the pin 21. The head of the pin is provided with a projection 27 adapted to fit into. any one of a plurality of holes 28 formed in the upper lug 29 of the seat back frame. When the parts are assembled the pin may be rotated until the desired tension of the spring is obtained, and the projection 27 pressed into one of the holes 28, the slot "26 permitting of the necessary endwise movement of the pin. A nut 30 screwed on the other end of the pin then keeps all in place.

The spring 24 tends to move the seat back to the position shown in Fig. 2. The seat back, however, is automatically thrown back by the engagement of part of the seat or its frame with the shoulder 22 on the seat back frame. Preferably a portion of the seat proper is cut away to permit the upper side of the rear part of the seat bracket 4 to thus engage the shoulder. With this engagement the brace 10 might be dispensed with, as the engagement of the seat bracket 4 with the shoulder 22 -of the seat back frame 20 tilts the latter back until the shoulders 23 engage, when further movement of either seat or back is prevented.

It will be seen from the construction described and shown that the seat may be used without the arms or without both back and arms as desired without material change in the construction. It will also be seen that the construction of the seat is simple, strong and cheap.

What we claim as our invention is:

1. In a folding seat, the combination of a metal standard; a cylindrical metal cross bar Td to the top of the standard; a seat; a seat bracket secured below'the seat provided with lugsjournaled on said cross bar; means limiting the downward hinging movement of the seat; and a coil spring surrounding said cross bar at one side of the standard and secured at one end to said cross bar and at its other end to said bracket.

2. In a folding seat, the combination of a metal standard; a cylindrical metal cross bar Td to the top of the standard; a seat; a seat bracket secured below the seat provided with lugs journaled on said cross bar; means limiting the downward hinging movement of the seat; a coil springsurrounding said cross bar at one side of the standard; and a collar rotarily adjustable on the cross bar, one end of the spring being secured to said collar and the other to said bracket.

3. In a folding seat, the combination of metal standard; a cylindrical metal cross bar Td to the top of the standard; a seat; a seat bracket secured below the seat provided with lugs journaled on said cross bar; means limiting the downward hinging movement of the seat comprising a bent brace rod secured at one end to the underside of the seat behind the cross bar and at its other end in front of the cross bar, the portion of the brace adjacent the cross bar being formed as an arc of a circle struck from the center of the cross bar and terminating in a rearwardly facing shoulder and the standard being provided with a slot through.

which the brace passes, the shoulder being adapted to engage the standard at the for ward end of the slot.

the brace adjacent the cross bar, being.

formed as an arc of a circle struck from the center of the cross bar and terminating in a rearwardly facing shoulder and the standard being provided with a slot through which the brace passes, the shoulder being adapted to engage the standard at the forward end of the slot, the part of the brace forward of the shoulder extending forward toward the front of the seat at substantially a tangent to the arc to brace the front of the seat.

5. In a folding seat, the combination of a metal standard; a cylindrical metal cross bar Td to the top of the standard; a seat; a seat bracket secured below the seat vided with lugs journaled on said cross ar; a back supporting bracket provided with a sleeve secured on the standard; a back frame pivoted on said bracket, the bracket and frame being provided with shoulders adapted to engage to limit the swing of the back in either direction; and parts on said back frame and seat adapted to engage to limit the downwardhinging movement of the seat.

6. In a folding seat, the combination of a metal standard; a cylindrical metal cross bar Td to the top of the standard; a seat; a seat bracket secured below the seat provided with lugs journaled on said cross bar;

a back supporting bracket provided with a.

sleeve secured on the standard; a back frame pivoted on said bracket the bracket and frame being provided with shoulders adapted to engage to limit the swing of the back in either direction; parts on said back frame and seat adapted to engage to limit the downward hinging movement of the seat; a

coil spring tending to swing the back forward; and a spring on the cross bar tending to swing the seat up.

7. In a folding seat, the combination of a metal standard; a cylindrical metal cross bar Td to the top of the standard; a seat; a seat bracket secured below the seat provided with lugs journaled on said cross bar;

means limiting the downward hinging movement of the seat; a back supporting bracket provided with a sleeve secured on the standard; a back frame pivoted on said bracket,.130

the bracket and frame being provided with shoulders adapted to engage to limit the swing of the back in either direction.

8. In a folding seat, the combination of a metal standard; a cylindrical metal cross bar Td to the top of the standard; a seat; a seat bracket secured below the seat provided with lugs journaled on said cross bar; means limiting the downward hinging movement of the seat; a back supporting bracket provided with a sleeve secured on the standard; a back carried thereby; and arm rests provided with sleeves secured on the ends of the cross bar.

Signed at Brantit'ord this first day of 15 March, 1917.

JOHN ALVIN BAWVTINHIMER. DAVID L. MILLER.

Witnesses:

AROHIBALD M. HARLEY, ELSIE WILMOT.

Copies 01' this patent may be obtained for five cents each, by addressing the Commissioner of Patents. Washington, D. G.

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