US 1491685 A
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Description (OCR text may contain errors)
April 22 1924,
H. C. EICHER ET AL SCHOOL FURNITURE Filed May 5. 1923 2 Sheets-Sheet 2 Patented Apr. 22, 1924.
UNITED STATESy HUBERT c. EICHEE AND HENRY KLoNowEE, oE HAEEI'SBUEG, PENNSYLVANIA.
Application filed May 5,
T 0 all whom t may concern:
Be it known that we, HUBERT C. EIGHER and HENRY KLONOWER, citizens of the United States, residing at Harrisburg, in the county of Dauphin and State of Pennsylvania, have invented certain new and useful Improvements in School Furniture, of which the following is a specification.
The present invention relates to school furniture, andV particularly combination desks and seats mounted on a' single base, and independently adjustable.
The object is to provide a simple structure of apractical character that will permit the individual adjustment of the desk or seat member, the latter being capable of being elevated by the pupil and automatically locked at the desired elevation.
A further object is to provide means whereby when the adjustment has been secured, the seat member can be positively locked against accidental change.
In the accompanying drawings Figure 1 is a side elevation of a combined seat and desk with novel holding means,
Figure 2 is a front elevation of the same,
Figure 3 is a detail sectional view through the locking means, v
Figure 4 is a rear elevation of the same, showing the holding means positively locked,
Figure 5 is a view similar to Figure 4, but showing the holding means released,
Figure 6 is a side elevation of the mounting,` and i ure 7 is a side elevation of the pawl mem er.
In the embodiment disclosed a single base 8 is provided for a seat and desk, said base having a short portion 9 and an upward extension 10 in rear of said portion 9. The desk is shown at 11 and is provided with a standard 12 vertically slidable in the portion 10. This standard is provided on 'one side with a rack 13.
The seat comprises a back 14 mounted on spaced brackets 15 that have their free ends connected by a supporting and pivot rod 16. On said rod are pivoted the ears 17 of arms 18 carrying the seat member 19. The rod 16 is centrally fixed to a standard 19a that is vertically slidable in the short portion 9 of the base 8, and said standard has a rack 20. Cooperating with the respective racks 13 and 20 are holding pawls, and as these are duplicates, a description of one will be 1923. Serial N0. 636,849.'
a description of both. Therefore a single disclosure thereof is made in Figures 3-7 inclusive.
. VSecured to the exterior` of the base is a mounting shell 21, preferably stamped from sheet metal and tapering outwardly, saidl shellv having a -an'ge 22 suitably secured to the base. In this shell ismounted a holding` pawl 23 that is adapted to interlock with the teeth of the rackf13 or 20 in al manner readily understood. This pawl is capable .of bothreciprocation and rotation, and preferably Ihas one corner beveled oif, as shown at 24.
It is carried by a cylindrical body portion 25--surroundcd byrla coiled spring 26 lthat serves to urge the pawl into engagement with the `rack teeth'. [This vspring bears against va Washer `27 carried by the body 25 and against the washer28 located against the inner face ofthe mounting shell. The outer end of the pawl member or body is provided with an angular crank handle 29 having a bearing4 lug 30 on its inner side and also carrying a locking projection 31. The outer end of the mounting shell is formed with a cam surface 32 against which the lug 30-is adapted to ride, and said outer end is also provided with an overhanging hook33 located at the lower end of the cam surface 32. The shell may also have in; its lower side an opening 34 which gives access tothe interior and also aords a means of exit for dust and the like that might otherwise accumulate in said shell.
Vith this construction, when the handle is turned to the position 'shown in Figure 5, the lug 31 is disengaged and the pawl' member can reciprocate freely. It is, however, urged into engagement with the rack by the sprin 26 as will be evident by reference to 1gure3. The member carried by the standard-either the desk or the seat-can therefore Ibe readily adjusted merely by pulling it upward, the pawl riding over the inclined faces :of the rack teeth and engaging under the sharp shoulders thereof, as will be evident. A pupil there- .fore may, for example, sit on the seat and said seat can be adjusted to his size. I/Vhen the desired adjustment has been made the handle is turned to the position illustrated in Figure 4, whereupon the lug 31 Will pass behind the hook 33 and thus positively lock the pawl against outward movement, fixing the member against accidental displacement. If the handle Iis turned to the other the construction, operation and many ad vantages of thev herein described invention will be apparent to those skilled in thefart, without further description, and it .will vbe understood that various changes in the size, shape, proportioi'randininor details of construction may be resorted to without departingfrom the spirit or sacrificing any ofthe advantages otk the invention.
f Having thus' fully .described our invention, what we claim as-new, and vdesire to secure by Letters lPatent, is'zt,
l.` School furniture, including a base, a member tobe adjusted having a standard sl'idable in the base andA provided with a rack, a` pawlthat-movably engages the rack and'perinits the upward movement of the standardwhilej preventing its downward movement, lsaid'pawl being also rotatable and means operative onv the rotation of the pawl for locking the .pa-wl against movement and in engagement with Athe rack to ,positively lock thefstandard against movement in either directions? f1 t2. School furniture, including a base, a member to be adjusted having a standard sli'd'able in the base and.' provided with a rack, 'a spring-pressed yreciprocatory pawl mounted on thef-standardv-,and capable' of rotaryy `niovemenn said ypawjl,A engaging/ the rack; andflby' itsrec'iprocation permitting the rack, a handle for the pawl, and
mounting for said pa'wl having an over" hanging hook behind which the handlel engages to losl thepawl in'engagemeiit with therack. j
4, Schoolfurniture, including a base anda member to be adjusted"having/a" vstandard slidably mounted infthebase and'` provided with a. rack, areciprocatory and rotary pa'wl mounted in the base and engaging the ira'ck,
a handle fory the pawlyan'd' 'almountingfor said -pawl having acamsurfacel against which the handle rides to'with'draw the' pawl from engagement with the rack, said mount# ing also having an overhanging hook behind inenga'g'ement with the rack,A
In testimony whereof, we'afiix our signatures in the presence of two witnesses7 i Y HUBERT C. EICHER;
HENRY Witnesses: i A
J; GEoRGE Bnorrr, U- G5 whiclrthe handle engages to lock the'pawl