US1564339A - Measuring chair - Google Patents

Description

C. C. FRASER ET AL Dec. 8, 1925.

MEASURING CHAIR Filed April 23 1925 2 Sheets-Sheet 1 INVENTORS.

Patented Dec. 8, 1925.

UNITED STATES I v 1,564,339 PATENT OFFICE.

I CHELSEA C. FRASER AND JOSEPHINE A. G OSS, OF GRANjD RAPIDS, MICHIGAN.

' MEASURING 01mm.

Application filed April 23, 1923. Serial No. 683,835.

To all whomit may concern:

Be it known that we, CHELSEA C. FRASER and Josnrmxu A. 'Goss, citizens of the United States, residing at Grand Rapids, county of Kent, State of Michigan, have invented certain new and useful Improvements in llleasuring Chairs, of which the improvements in particular user, for instance school desks which are frequently provided with adjustable seats and desk tops.

The main objects of this invention are:

First, to provide an improved measuring chair or device by which the necessary data for adjusting the seat height from the floor, the desk height relative to the floor and the back position maybe rapidly and accurately determined.

Second, to provide a device of the class described by means of which the data for adjusting desks may beaccurately determined to adapt them to the requirements 0 the particular user, permitting the adjust.- ment of the desks by the janitor or others in the absence'of the person by whom it is to be used.

Objects pertaining to details and economies of construction and operation of our improvements will definitely appear from the detailed description to follow.

\Ve accomplish the objects of our invention by the devices and means described in the following specification. The invention is clearly defined and pointed out in the claims.

A structure which is a preferred embodiment of our invention is clearly illustrated in the accompanying drawing forming a part of this application, in which:

Fig. 1 is a front perspective view of a measuring chair embodying the features of our invention.

Fig. 2 is a detail perspective view of the means by which the back standard is ad- 7 justably supported removed from the frame.

Fig. 3 is a rear perspective view of the back member or back pad supporting bracket by means of which it is adjustably su ported upon the back standard.

*ig. 4 is a fragmentary side elevation with the supporting frame omitted, parts being shown in vertical section to illustrate struc tural details. Fig. 5 1s a detail rear perspective view 0 the footrest support member with the index.

or pointers mounted thereon.

'F'g. 6 is an end elevation of the in collapsed or folded position.

Fig. 7 is a detail view of the arm rest in footr st.

folded position.

Fig. 8 is a detail viewof one of the frame uprights or legs in which, the arm rest standard is slidably mounted showing structural details of such mounting.

Fig. 9 is a detail side elevation looking from the left of Fig. 8, the arm rest support being omitted.

Fig. 10v is a perspective view of-the scale member carrying plate disassembled from the other parts.

Fig. 11 1s a detail perspective View of one of the scale members mounted upon the supporting plate.

In the drawing similar reference numerals indicate similar parts throughout the several views.

' Referring to the drawing, we provide a f supporting frame work comprising in the structure illustrated the base members 1, the legs 3 and ,4, the leg 4 being of somewhat larger cross section than the legs 3, the front to and bottom cross members 5, the vertica piece 6 mounted on the cross members 5, the side cross members 7, and the rear top and bottom cross members 8. The seat 9 1s mounted on this frame, theframe being of such height that the legs of the tallest person to be measured are in hanging position when the erson is seated.

The bac member 10 which is preferably in the form of a pad, that is, it is suitably designed to engage the back at 'a distance above the seat, is mounted for vertical adjustment on the standard 13, the back being carried by the bracket 11 having a non-circular hole 11' therein engaging the standard, a clamping nut 12 securing the bracket in its adjusted position on the standard. The

standard has scale indicia 13" thereon reading upwardly, the bracket 11 having a pointer 11" thereon coacting with the scale indicia to indicate the adjusted position of the back member.

The standard is supported for adjustment from front to rear of the seat, the seat being horizontally slotted at 9' to receive the standard which is slidably supported on the bar 14 carried by the brackets 15 and 16, the bracket 15 being mounted on the under side of the seat 9 and the bracket 16 on the rear cross piece 8 which is slotted at 8' to receive the rod 14. The scale 9 is dis osed at the side of the slot to indicate the a justment of the back upright 13, which is provided with an index member 13" coacting with the scale. The footboard 21 is hinged to the carrier or slide 20 and is supported in extended position by the jointed braces 22. The footrest is supported for vertical adjustment by the rods 18 carried by the brackets 17 mounted on the vertical upright pieces 6 of the frame.

Buffers 23 are mounted on the rods at their lower ends.

To support the footrest in its adjusted positions we provide a counterbalance 28 which is connected to the footrest by the cable 25 passed over the guide pulleys 26 and 27 and secured. to the screw eye 24 on the rear side of the slide 20. The slide 20 is preferably formed of wood, the rod engaging members 19 being of metal as indicated.

The footrest represents the floor and is adjusted to engage the feet of the person occupying the seat thereby indicating the height of the seat for that particular user. To facilitate the adjustment of the footrest we provide a lever 44 which is pivoted to the footrest carrier at 31 and is connected to the rear top cross piece of the frame by the bracket 30. and the link 29, the lever projecting to the rear of the seat for convenience in manipulation, the counterweight, as stated, holding the footrest in adjusted position.

To facilitate the determining of the distance of the footrest from the seat, we provide a scale 34 reading downwardly the footrest carrier 20 having an arm thereon provided with a pointer 33 coactin with this scale. An armrest 35 pre erably formed of sections connected by the hinges 36 permitting the folding of the armrest to render the structure more compact when not in use is mounted on the standard or upright 37, the arm rest 35 representing the desk and being preferably inclined at an angle of 15 to the horizontal which is the inrlination of the ordinary school desk. This standard 37 is vertically adjustable through the chair seat in a vertical groove or channel in the leg 4. This leg has a slot 4 therein (Fig. 9) through which the clamping bolt 39 carried by the standard is disposed, the slot opening into the slide groove of the upright. The bolt 39 may be introduced or removed through the hole 4' in the leg. The wing nut 43 disposed through the slot 4" secures the arm rest in its adjusted positions.

A scale indicia 41 is connected to the bolt 39 by the bracket plate 40 having a hole 40 therein to receive the bolt, the lugs 40 engaging the slot, thereby preventing turning movement of the supporting plate or bracket 40. The block 42 also serves as a guide for this scale indiciamember 41. The scale indicia on this member 41 read upwardly. Thus mounted it is adjusted with the arm rest.

The arm 32 on the footrest carrier is provided with a pointer 31 which is operatively associated with the scale member 41 so that the adjusted position of the arm rest is indicated relative to the footrest, thereby determining the proper position of the desk top relative to the floor.

With this arrangement of parts the prop or measurements may be determined for the adjustment of the desks by persons not especially skilled, it being found that there are great variations in the requirements of different individuals as to seat depth, back the combination with a seat, of a supporting frame therefor, a back standard mounted for horizontal adjustment from front to rear of said seat, said seat being provided with scale indicia associated with said stand ard to indicate the adjusted position thereof, a back member mounted for vertical adjustment on said standard, said standard being provided with scale indicia reading upwardly for indicating the adj usted position of said back member, an arm rest mounted on said frame for vertical adjustment relative to said seat, a scale member mounted for vertical adjustment with said arm rest, said scale member being provided with scale indicia reading upward, a footrest mounted on said frame for vertical adjustment relative to said seat, said frame being provided with scale indicia reading downward and indicating the adjusted position of saidfootrest, a pointer carried by said footrest and coacting with said scale member adjustable with said arm rest, and a pointer carried by said footrest coacting with said footrest scale indicia.

2. In a structure of the class described, the combination with a seat, of a support- \Ve have not ing frame therefor, an armrest mounted on said frame for vertical a'd'ustment relative to said seat, a scale mem r' mounted for vertical ad'ustment with said arm rest, said scale mem er being rovided with. scale indicia reading upwar a footrest mounted on said frame for vertical adjustment relative to said seat, said frame being provided with scale indicia reading downward and indicating the adjusted position of said footrest, a pointer carried by said footrest and coacting with said scale member adjustable with said arm rest, and a pointer carried by said footrest coacting with said footrest scale indicia.

3. In a structure of the class described, the combination with a seat, of a supporting frame therefor, a back standard mounted on said frame for horizontal adjustment from front to rear of said seat, said seat being provided with scale indicia associated with said standard to indicate the adjusted position thereof, a back member mounted for vertical adjustment on said standard, said standard being provided with scale indicia reading upwardl for indicating the adjusted position 0 said back member, and a footrest mounted on said frame for vertical adjustment relative to said seat, said frame being provided with scale indicia with which said footrest is operatively associated.

a. In a structure of the class described, the combination with a seat, of a supporting frame therefor, a back standard mounted on said frame for horizontal adjustment from front to rear of said seat, said seat.

being provided with scale indicia associated with said standard to indicate the adjusted position thereof, and a back member mounted for vertical adjustment on said standard, said standard being provided with scale indicia reading upwardly for indicating the adjusted position of said back member.

5. In a structure of the class described, the combination with a seat, of an arm representing a desk top mounted for vertical adjustment adjacent and relative to said seat, and a footrest representing the floor mounted adjacent to and for vertical adjustment relative to said seat, there being scale indicia indicating the adjusted position of said footrest relative to said seat, and scale indicia operatively associated with said arm rest and footrest indicating the adjusted position of the arm rest relative to the footrest.

6. In a structure of the class described, the combination with a seat, of a back standard mounted for horizontal adjustment from front to rear of said seat, there being scale indicia indicating adjusted position of said standard relative to said seat, a back member mounted for vertical adjust ment on said standard, there being scale indicia'lindicating the adjusted position of said back member relative to said seat,'and

a footrest re resenting the' floor mounted for vertical a justment relative to said seat, there being scale indicia o eratively associated with said footrest an seat indicating the adjusted position of said footrest relative to said seat.

7. In a structure of the class described, the combination with a seat, of a supportin frame therefor, a back standard mounte for horizontal adjustment from front to rear of said seat, a back member mountedadjustment thereof.

8. In a structure of the class described, the combination with a seat, of a supporting frame therefor, a back standard mounted for horizontal adjustment from front to rear of said seat, a back member mounted for vertical adjustment on said standard, an arm rest mounted on said frame for vertical adjustment relative to said seat, there being a scale adjacent each adjustable part to facilitate adjustment thereof.

9. In a structure of the class described, the combination with a seat, of a supporting frame therefor comprising legs, one of said legs having a vertical groove therein, an arm rest, a standard therefor disposed through said seat and slidable in said groove, said leg having a vertical slot opening into the groove, a bolt carried by said standard projecting fromsaid slot and provided with a winged nut whereby it may be secured in adjusted positions, a scale member provided with scale indicia carried by said bolt, the indicia of said scale being readable upward, a footrest mounted on said frame for vertical adjustment relative to said seat, and a pointer coacting with said scale member carried by said footrest.

10. In a structure of the class described, the combination with a seat, of a supporting frame therefor, an arm rest, a standard therefor mounted on said frame for vertical adjustment, means for securing said standard in its adjusted positions, a scale member provided with scale indicia adjustable with said standard, a footrest mounted on said frame for vertical adjustment relative to said seat, and a pointer carried by said footrest and coacting with said scale member.

11. The combination with a seat, of a supporting frame, a footrest, slide rods vertically disposed on said frame, a back member on which said footrest is pivotally' said rods, a scale on said frame, a pointer on said footrest coacting with said scale, a counterweight for said footrest, and a lever pivoted on said frame and projecting to the rear of said seat for vertically adjusting said footrest.

I 12. The combination with a seat, of a supporting frame, a footrest mounted on said frame for vertical adjustment, a scale on said frame, a pointer on said footrest co acting with said scale, and a lever pivoted on said frame and projecting to the rear of said seat for vertically adjusting said footrest.

13. The combination with a seat, of a supporting frame, a footrest mounted on sa d frame for vertical adjustment, a scale on said frame, a pointer on said footrest coacting with said scale, a counterweight for said footrest, and a lever pivoted on said frame and on said footrest and projecting to the rear of said seat for vertically adjusting said footrest.

14;. In a structure of the class described, the combination of a seat having'a slot extending forwardly from the rear edge thereof, a standard supporting slide mounted underneafth the seat adjacent said slot, a standard mounted on said slide for adjustment in said slot, a scale member disposed at the side of said slot to indicate the adjusted positions of the standard, and a back member mounted upon said standard and having anedge adapted to coact with said scale.

15. In a structure of the class described,

the combination of a frame provided with a seat, of a footrest mounted on said frame for vertical adjustment relative to said seat, and an arm rest mounted on said frame for vertical adjustment relative to said footrest, said footrest and arm rest being provided with coacting distance indicating means, for the urpose specified. 4

16. In a structure of the class described, the combination of a frame provided with a seat, of an arm rest mounted on said frame for vertical adjustment relative to said seat, a foot rest mounted on said frame for vertical adjustment relative to said seat, and means actuated by the adjustment of said arm rest and footrest for indicating the distance between them.

In witness whereof, we have hereunto set our hands.

CHELSEA C. FRASER. JOSEPHINE A. GOSS.

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