US331550A - School-seat - Google Patents

Description

2 SheetSSheet 1.

(No Model.)

J. M. SAUDER.

SGHOOL SEAT.

No. 331,550. Patented Dec. 1, 1885.

WITNESSES INVENTOR (/%w mww 2 m X ATTORNEYS.

(No Model.) 2 Sheets-Sheet 2.

J. M. 'SAUDEB.

SGHOOL SEAT.

No. 331,550. I Patented Dec. 1, 1885.

WITNESSES L) J IJ/VENTOR:

BY M

ATTORNEYS.

are

STATES JOHN M. SAUDER, OF HARRISBURG, PENNSYLVANIA.

SCHOOL-SEAT.

SPECIFICATION forming part of Letters Patent No. 331,550, dated December 1, 1885.

Application filed March 23, 1885. Serial No. 159,787. (No model.)

To all whom, it may concern:

Be it known that I, JOHN M. SAUDER, of Harrisburg, in the county of Dauphin and State of Pennsylvania, have invented certain new and useful Improvements in School-Seats, of which the following is a full, clear, and we act description.

Reference is to be had to the accompanying drawings, forming part of this specification, in which similar letters of reference indicate corresponding parts in all the figures.

Figure 1, Sheet 1, is a side elevation of one of myimproved school-seats,tl1e seat being shown in the position it will have when in use. Fig. 2, Sheet 1, is a side elevation of the same fold ed. Fig. 3, Sheet 1, is an elevation of a part of the same, showing the inner side of a seatarm, seat-bar, and part of the end frame, the seat-arm being shown in full lines in the position it will have when not in use and in dotted lines in its position when in use. Fig. 4, 2

Sheet 1, is the same view as Fig. 3, but showing the seat in its position when folded. Fig. 5, Sheet 1, is an elevation of a part of the end frame, showing its outer side. Fig. 6, Sheet 1, is a side elevation of one of the pivot-bolts and its nut. Fig. 7, Sheet 1, is a sectional plan View of the lowerjoint of the seat-bar. Fig. 8, Sheet 2, is an under side view of a part of the seat, showing the lockinggroove. Fig. 9, Sheet 2, is a perspective view of a portion of the lockingfiange of the seatarm or end frame. Fig. 10, Sheet 2, is a sectional elevation of a portion of the seat and of the lockingfiange. Fig. 11, Sheet 2, is an under side view of a part of the seat, showing a modification of the locking-groove. Fig. 12, Sheet 2, is a perspective View of a portion of the locking-flange of the seat arm or end frame, showing a modified form of the said flange. Fig. 13, Sheet 2, is a side elevation of a seatarm and seat.

The object of this invention is to provide school'seats constructed in such a manner that they can be readily folded and extended, and will be noiseless when in use.

The invention consists in the construction and combination of the various parts by means of which the seat-arms are connected with the end frames, as will be hereinafter fully described, and then pointed out in the claims.

A. represents the end frames, the lower parts of which are extended forward and have rounded projections B, formed upon them, to serve as supports for the seat-bars O, and to which the lower ends of the said seatbars are hinged. The lower ends of the seat-bars G are rounded, have recesses E formed in their outer sides, and have convex or rounded projections or bosses D formed upon the middle part of their inner sides to enter rounded recesses F, formed in the adjacent sides of the supports B. Upon the other sides of the supports B are formed rounded recesses F. V

The supports B in the centers of the recesses F and the lower ends of the seat-barsO in the centers of the bosses D and recesses E are perforated to receive the pivot-bolts G, which have nuts H screwed upon their ends.

Upon the bolts G, beneath their heads and the nuts H, are placed fourarmed washers I,

which are thus directly over the recessesE F,

and are sprunginto the said recesses by screwing up the nuts H, so that the ends of the seat-bars G will be held snugly against the supports B, and all wear will be taken up. The ends of the arms of the washers I rest in small recesses in the supports B and seatbars 0 at the edges of the recesses EF,so that the outer surfaces of the said washers will be flush with the surfaces of the said supports B. The movements of the ends of the seat-bars (1 upon the supports B are limited by two proj ections, J ,which enter curved slots K, formed in the forward upper parts and the rearlower parts of the supports B, as shown in Figs. 3 and at. The forward ends of the bolts G are slotted to receive pins L,passed through holes in the nuts H, to prevent the said nuts from working loose, as shown in Fig. 6. The upper ends of the seat-barsG are connected with projections M formed upon the lower forward parts of the seat-arms N, by joints similar to those that connect the lower ends of the said seat-bars O to the supports B, except that only one curved slot, K, is formed in the projections M, and only one stop projection, J, is formed on the upper end of the said seatbar 0.

At the inner sides of the seat-bars G are placed springrods O, the ends of which are bent outward, and are inserted in holes in the upper rear parts of the supports 13, and in the lower parts of the projections M, recesses P being formed in the said supports B, and projections M, as illustrated in Fig. 5, to reeeive the end parts of the spring-rods O, and prevent them from being pinched between and worn by the said supports and projections and the seat-bars O.

Upon the forward edges of the inner sides of the seat-bars O, at a little above their centers, are formed projections Q, against which the said rods 0 strike, and are put under ten sion when the seats are lowered into position for use, the tension being sufficient to raise the seats when left free into the position shown in full lines in Fig. 3.

WVhen the seat is in use, its rear part is pressed downward into the position shown in Fig. 1 and in dotted lines in Fig. 3, the rear ends of the seat-arms N, or rubber blocks R, attached to the said ends, resting upon projections S, formed upon the forward edges of the end frames, A. WVith this construction, when the pupil rises, the elasticity of the rods 0 raises the rear edge of the seat into the position shown in full lines in Fig. 3. Then by pressing back with his legs against the forward edge of the seat, or by taking hold of the rear edge of the seat with his hand and raising it, the seat will swing back into the positions shown in Figs. 2 and 4, and will lie snugly against the forward side of the seatback, leaving the greatest possible space for the passage out and in of the pupil.

When the folded seat is to be extended or lowered into position for use, the pupil takes hold of the rear edge of the seat and swings it forward, when the rods 0 draw it into the position shown in full lines in Fig. 3, and as the pupil sits down upon it his weight brings it into the position shown in Fig. 1 and in dotted lines in Fig. 3.

In the lower sides of the wooden strips T, forming the seat back and top, and near the side edges of the said seat back and top, are formed T-grooves U, as shown in Figs. 8 and and 10, or L-grooves, as shown in Fig. 11, and which have enlargements V formed in them upon both sides, as shown in Fig. 8, or upon one side, as shown in Fig. 11. The enlarge- Inents V can be made rectangular, as shown in Fig. 8, 01' triangular, as shown in Fig. 11.

Upon the upper sides of the seat-arms N and the forward edges of the upper parts of the end frames A, are formed flanges W, which have rectangular or triangular projectionsX upon one or both sides, corresponding in shape and position with the enlargements V of the grooves U. The projections X are undercut,"

giving them a T form, as shown in Fig. 9, or an L form, as shown in Fig. 12, and the flanges thus formed are tapered, so that when the seats and backs are placed upon the flanges W with the enlargement V over the projections X, and are driven forward, the tapered flanges of the said projections will draw the said seats and backs down snugly upon the shoulders of the said flanges and hold the said seats and backs securely in place.

Having thus fully described my invention, I claim as new and desire to secure by Letters Patent- 1 In a school-seat, the combination ,with the end frames, A, having projections B, provided with recesses F upon the opposite sides, and curved slots K, and the seat-arms N, having projections, M, provided with a boss upon one side, a recess upon the other side, and a' curved slot, K, of the seat-bars 0, having recesses E, bosses D, and projections J J at their ends, and projections Q upon their upper forward parts, the spring connecting-rods O, .30

the pivot-bolts G, and nuts H, and the fourarmed washers I, substantially as herein shown and described, whereby the seat can be readily folded and extended, and will automatically take an inclined position, as set forth.

2. In a school-seat, the combination, with the end frame, A, the seat-arm N, and the seatbar 0, jointed at its ends to the said frame and seatarm, and provided with a project-ion, Q, of the spring-rod O, substantially as herein shown and described, whereby the seat will take an inclined position when left free, as set forth.

3. In a school-seat, the combination, with the seat-frame A, having a forward projection, B, and a projection S, the seat-arm N, having a projection, M, and the seat-bar O, jointed to the projections 13 and M, and provided with lug Q, of the spring-rod O, substantially as shown and described.

4. In a school seat, the combination, with and the locking-pin L, substantially as herein shown and described, whereby the movement of the joint is prevented from working the said bolt and nut loose, as set forth.

JOHN M. SAUDEB. Witnesses:

JAMES T. GRAHAM, O. SEDGWVIOK.

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