US1103884A - Combination desk and seat for school-rooms. - Google Patents

Description

G. H. W. KNIGKREHM. COMBINATION DESK AND SEAT FOR SCHOOL ROOMS.

APPLICATION FILED 0013.20, 1913.

Wake 24 ,44-

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THE NORRIS PETERS c0, WASHINGTON, Dv c.

G. H. W. KNIGKREHM. COMBINATION DESK AND SEAT FOB, SCHOOL ROOMS.

Patented July 14,1914.

2 SHBETSSHEET 2.

APPLIUATION FILED O0T.20, 1913.

THE NqRRIs PETERS UNTTED sra'rns a'rnn'r orrucn.

1 CHARLES I-L W. KNIGKREI-IM, OF FOREST PARK, ILLINOIS. I

COMBINATION DESK AND SEAT FOR SCHOOL-ROOMS.

To all whom it may concern Be it known that I, CI-IARLEs H. W. KNi'oKRm-IM, a citizen of the United States, and a resident of the city of Forest Park, county of Cook, and State of Illinois, have invented certain new and useful Improvements in Combination Desks and Seats for School-Rooms, of which the following is a specification.

My invention relates to school furniture and more specifically to a combination school desk and chair.

The object of my invention is the production of a combination school desk and chair which will be of an adjustable nature so as to adapt the same for use in the various grades of a school or for pupils of various ages and sizes.

A further object is the production of a piece of school furniture as mentioned which will be of durable and economical construction and eflicient in use.

Other objects will appear hereinafter.

The invention consists in the combinations and arrangements of parts hereinafter described and claimed.

The invention will be best understood by reference to the accompanying drawings forming a part of this specification, and in which,

' Figure 1 is a side elevation of a comb1nation school desk and chair embodying my invention, a portion thereof being broken away and shown in section, Fig. 2 is a section taken on line 00a2 of Fig. 1, Fig. 3 is a rear elevation of the device, Fig. 4c is a top plan view of the desk of the device, and Fig. 5 is an enlarged detail section taken on line 'yy of Fig. 4.

The preferred form of construction as illustrated in the drawings comprises a base 1 of hollow construction and formed preferably of sheet metal. Mounted for vertical adjustment in the base 1 are two posts 2 and 3, the post 3 being divided longitudinally into two sections 3. Said posts 2 and 3 are releasably secured in positions of vertical adjustment by means of clamping jaws 1 and 5 respectively, there being a pair of jaws cooperating with each of said posts, as clearly shown in Fig. 2. The inner ends of said jaws are pivotally secured in position by means of transversely extending pins 6, the opposite ends thereof being adapted to engage against the converging opposite sides of said posts as shown. Said jaws are held Specification of Letters Patent.

Application filed October 20, 1913.

Patented July 14, 1914.

Serial No. 796,235.

in clamping relation by means of bolts 7 and nuts 8 threaded upon said bolts which are adapted to move said jaws toward each other or into clamping relation with the posts as will be readily understood. The

outer ends or heads of the bolts 7 project eX- teriorly as shown so that the same may be engaged by a wrench or key in order to r0- tate the same. The nuts 8 fit square apertures formed in the adjacent wall of the base 1 whereby said nuts are held against ing aws are moved into engagement therewith.

Cooperating with each of the posts is a stop block 10 held in position by means of j a screw 11 which projects through an elongated slot 12 provided in the adjacent wall of base 1. The blocks 10 serve as will be readily understood to hold the posts 2 and 3 in engagement with the clamping jaws, it being clear that without this provision said posts would move from engagement with the inclined surfaces of the clamping {jaws when the latter were moved into engagement therewith. By providing elongated slots 12, slight rotary adjustment of the members 10 is permitted in order to adapt the same to conform with the positions assumed by the posts when engaged by the clamping jaws. The upper end of the base 1 is closed by plates 13 which are secured in position by thumb screws 13 which engage slot-ted ears provided at the lateral edges of said plates, said plates preventing the entrance of dust into the base and otherwise serving to finish off the upper end thereof.

Mounted upon the upper end of the post 2 is a plate 14 to which is rigidly secured a seat back 15 which arises therefrom, being inclined preferably slightly rearwardly. Pivoted at 16 to the lower end of back 15 is a seat 16 adapted when in operative positionto be supported upon the plate 14: as shown, said seat being adapted to be swung to vertical position when not in use in order to prevent the accumulation of dust thereon. Mounted upon the upper end of the post sections .3 is a desk comprising a bottom piece 17 which is secured directly as by bolts or rivets to the upper ends of said post 7 sections, braces 18 being employed to effect a more rlgld and firm connection between said post sections and said member 17. The

of inwardly extending angular flanges 22.

provided at theupper edges of said walls which interlock, with angular engaging strips 23 secured upon the under side of said top, as clearly shown in Fig. 5. The

arrangement 1s such, as will be observed,

that saidtop 21 will be locked'to. the lateral walls 19 but in such a. manner as to permit of rearward sliding or extending thereof in order to adapt the desk for use with children or pupils of various ages or sizes, it being clear that with a small child the top will be moved rearwardly so as to be more readily accessible. rearwardly, a gap is formed at the forwardend thereof between the same and a stationary strip 21, this gap being spanned by a: strip or plate 24 of sheet metal secured upon the under side. of said top projecting forwardly therefrom, as clearly shown in Figs l and 4s.

With a construction as set forth it will.

be seen that the chair or seat and the'desk -may be readily and easily vertically adjustedin orderto accommodate children of various sizes or ages. By forming the post 3 of two independently adjustablesections 3 ready leveling of the desk is rendered possible it being clear that with this ar-' rangement I if the base is not level or is mounted upon an uneven floor the desk may be readily and quickly leveled by simply ad justing said post sections. The construction is durable and economical, and the arrangement is of neat and finished appearance While I have illustrated and described the 1 preferred form of construction for carry- 1 ing my invention into effect, this is capable Copies of this patent may be obtained for five cents each; by. addressing the Commissioner of Patents,

When said top is thus moved therefore, do not wish to be limited to the"v precise details of construction set forth, but desire to avail myselfof such variations and modifications as-come within the scope of the appendedclaims.

' Having described my invention. what I claim as new and desire tosecure byLetters Patent is:

1. A device of the kind described com prising a hollow base; apost extending into said base; a pair of clamping jaws in said base engaging said post; a rivet passing through said base and said jaws; and a bolt passing throughsaid jaws and adapted to adjust the latter, the head of said bolt being extended from said base for manual operation thereof and the nut of said bolt being held by said'base to prevent rotation thereof, substantially as described.

2.-A device of the kind described comprising a hollow base; a post triangular in cross section extending into said base; a block in said base against one side of said post; a pair of clamping jaws in said base with one end of each jaw engagingone side of said post; a rivetpassingthrough the other end of each of said jaws and said base; and a bolt passing through said jaws and adapted to maintainthe latterin operative condition, substantially as described. I

3. A device v of the kind described com- :prising a hollow base having perforations therein, one of said perforations being square; a post extendinginto said base; a block between the inner wall of said base and said post; two clamping jaws in said base, each havingone end thereof engaging one side of said post, said block and jaws cooperating .to hold said post in position; a rivet extending through the other ,ends of said jaws and said base; a threaded bolt passing through said jaws and having'its' threaded. end in said square perforation and its'head disposed in one ofthe other, of said.

perforations; and a nut threaded on said bolt, disposed in and fitting said square perforat-ion, said bolt and nut cooperating'to operate said'jaws, substantially as described. In testimony whereof I have signed my JosHUA R. H. Porrs, I'IELEN F. L1LLis.

Washington, D. '0.

oi- ARLEsH. w. KNIOKREHM." I i ,nameto this specification in the presence of

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