US659411A - School desk and seat. - Google Patents

Description

No. 659,4n. at

P. S. MGAULAY &.M. ANDERSON.

SCHOOL DESK' AND SEAT. v

(Ap lication tiled A (No Model.) P Pr 27, 1897.)

ented Oct. 9. |900.

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UNITED STATES PATENT OFFICE..

PAUL s. 'M CAULAY AND MARTIN ANDERSON, or vSOUTH OMAHA, NEBRASKA.

SCHOOL DESK AND SEAT.

SPECIFICATION forming part of Letters Patent N o. 659,411, dated October 9, 1900.

Application filed Apri127, 1897.

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Be it known that we, PAUL S. MOAULAY and MARTIN ANDERSON, of South Omaha, in the county of Douglas and State of Nebraska, have invented a new and Improved School Desk and Seat, of which the following is a full, clear, and exact description.

Our invention relates to an improved 'form of desk and seat for school purposes;v and it consists in forming the end frames with sockets adapted to receive bars which respectively carry the seat and the desk. 'These bars are made independently adjustable, so that each may be adjusted to the height desired without its aecting the other.

It also consists iu certain means for pivoting and supporting the seat and in other details, which will be pointed out hereinafter.

Reference is to be had to the accompanying drawings, forming a part of this specification,

in which similar characters of reference indicate corresponding parts in all the figures.

Figure 1 is an end elevation of a desk constructed according to our device, having a portion of the outside plate removed in order to show the inner construction. Fig. 2 is an elevation of the pivoted seat-supporting bar. Fig. 8 is an elevation of the vertical bar upon which the seat is pivoted. Fig. 4 is a section taken upon the line 4 4 of Fig. l, and Fig. 5 is a section taken upon the line 5 5 of Fig. l.

The object of our invention is to produce a seat and desk for school use which shall 'be of strong and simple construction, pleasing in outline, and which shall permit of independent adjustment of theseat and desk for pupils requiring the sarne'at different heights.

The end frames which carry the seat and the desk are each composed of two plates A and A. These plates are provided with feet adapted to be secured to the door and are concaved or hollowed, so as to form a hollow frame, the concaved sides being put together. This frame does not extend above the height of the seat when in its lowest position. These two plates are so shaped as to form two sockets, having their opening at the upper edge of the plates and adapted to receive the bars E and B, carrying, respectively, the seat andv the desk. The inner edges of each of these sockets-that is, the edges next to the central end, adapted to receive the bolt f. VF is also provided with lugs F', adapted to Serial No. 634,071. (No model.)

line of the frame-are provided with notches C. Within the forward one of these sockets is inserted the bar E, which carries the seat.

It is understood that the desk as herein de; scribed is one having two side frames, with the seat formed as a bench and also with the desk portion extending from one side to the other. The parts herein mentioned and described are therefore understood as being pro- Q duced in duplicate, the sides being alike.

The bar E, which is shown in detail inv Fig. 3, consists of a flat plate, which is in general of a rectangular outline. At the lower end upon one side edge it is provided with teeth e, adapted to engage the teeth C upon the frame. This edge of the bar is the one which lies toward the rear or toward the center of the frame.

` responding to the slot E4, but upon theopposite side of the center.

The bar F, to which the seat is fastened, is provided with a cental pivot-hole f at its rear The bar engage the slot E4 and the notch E5 in the bar E. These lugs are shorter than the slot and the notch and permit the seat to be rocked upon its pivot, as indicated by the dotted lines in Fig. l. A-cap F2, consisting of a circular washer, is bolted to the lugs F by the bolts or screws f2, so that it holds the plate F securely against the upper endvof the bar E. The cap F2 turns withthe bar F. The lugs F', engaging the ends of the slot E4 and the notch Esupon opposite sides of the center of the bar E, form a double support for the platev F and relieve the pivot-boltf of substantially all the strain. This makes the points of support twice as far apart as they The opposite lower edge of the' bar is recessed, so that it is narrower than the portion immediately above it.

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would lbe were a single lug used, and therefore makes the parts stronger than they would otherwise be.

The plates A and Al, forming the base of the side frame, are secured together by bolts A2. The bar E is also provided with a vertical slot E3, through which passes the bolt CL2, limiting the upward movement of the bar and at the same time binding the two plates of the frame closely together. A set-screw G enters the forward edge of the base of the frame and engages the forward edge of the lowersection E2 of the bar E. This set-screw holds the bar to the rear, so that the teeth e cannot be disengaged from the teeth C' until the set-screw has been withdrawn.

The frame B, forming the end frame of the desk proper, is provided at its lower end with two similar .sections B and B2, the lower one being the narrower. Upon the lower end of its forward edge the section B2 is provided with teeth b, which are adapted to engage the teeth C' upon the frame. Said section is also provided with a vertical slot B3, through which passes a bolt a', serving to limit the upward movement of the plate B and to bind the two plates A and A' of the frame together. A set-screw G also engages the rear edge of the lower sect-ion B2 to hold the teeth Z) in engagenient with the teethl C'. To release either of the bars E or B for adjustment of their height, the set-screws G and G/ are withdrawn far enough so that the lower end of the bar may be forced away from the teeth C'. The bar is then raised or lowered until the proper position is obtained. The bars will hold themselves in place, because the center of gravity of each bar is upon the side opposite that occu pied by the engagingteeth. Asar'esult, the bars E and B will be held tirmly in engagement with the teeth C'. The set-screws G and G will lock the bars firmly in place, so that they cannot be moved by hand. The upper ends of the slots E2 and B3, it will he noticed, are slightly smaller than the portion immediately below. This provides for firmly holding the upper ends of the bars and yet permitting a slight rocking thereof sulheient to release the locking-teeth when adjustment of the height of the bars is necessary.

A deskframe made in the manner described presents smooth surfaces, which will not catch and hold dust and has no rough parts which will catch or wear the clothing or shoes of the scholars. It is also a strong form and one which may be readily manufactured at a slight expense.

The construction shown and described also provides for considerable variation in height of both seat and desk, and thus adapt-s the same desk for the use of scholars varying a great deal in height. The adjustment of the seat and the desk cannot be accomplished by the scholar except by the use of tools, and yet the locking device may be released quickly by the use only of a screw-driver. This prevents tampering with the desk by the pupils.

Itis preferred that the heads of all bolts used in securing the parts together should be conntersunk, so as to present a smooth surface. The desk-top D and the seat-back D' may be made of any convenient material and of any design preferred and attached to the frame B, as desired.

Having thus fully described our invention, we claim as new and desire to secure by Letters Patent- The combination with a stand provided with vertical sockets having teeth on one lower side edge, of bars fitting in the sockets and provided at their lower ends on their inner edges With teeth engaging the teeth of the sockets and on the outer edges with recesses, the upper ends of the bars being each provided with a curved slot and a notch in its edge corresponding to the slot, but on the opposite side of the center, set-screws passing through the sockets and engaging the recesses of the said bars, and seat-bars pivoted to the upper ends of the sliding bars and provided with oppositely-arranged lugs engaging the slot and notch respectively of the sliding bars, substantially as herein shown and described.

PAUL S. MCAULAY. MARTIN ANDERSON.

Witnesses:

A. L. SUTTON, W. C. LAMBERT, F. A. AGNEW.

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