US135089A - Improvement in school desks - Google Patents
Improvement in school desks Download PDFInfo
- Publication number
- US135089A US135089A US135089DA US135089A US 135089 A US135089 A US 135089A US 135089D A US135089D A US 135089DA US 135089 A US135089 A US 135089A
- Authority
- US
- United States
- Prior art keywords
- seat
- improvement
- frames
- school
- school desks
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 210000003414 Extremities Anatomy 0.000 description 4
- 230000001808 coupling Effects 0.000 description 4
- 238000010168 coupling process Methods 0.000 description 4
- 238000005859 coupling reaction Methods 0.000 description 4
- 229910001018 Cast iron Inorganic materials 0.000 description 2
- 241000282619 Hylobates lar Species 0.000 description 2
- 210000002445 Nipples Anatomy 0.000 description 2
- 210000001747 Pupil Anatomy 0.000 description 2
- 210000001138 Tears Anatomy 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000000875 corresponding Effects 0.000 description 2
- 230000000994 depressed Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000002023 wood Substances 0.000 description 2
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C11/00—Pivots; Pivotal connections
- F16C11/04—Pivotal connections
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T403/00—Joints and connections
- Y10T403/32—Articulated members
- Y10T403/32549—Articulated members including limit means
- Y10T403/32557—Articulated members including limit means for pivotal motion
- Y10T403/32581—Pin and slot
Definitions
- the seat-frames are attached to the centers of the main frames or standards by pivotjoints, of simple and durable construction, adapted to operate without noise.
- the slats of which the seats are formed are secured to their arms by wood-screws, aided by projecting studs or dowels.
- Figure 1 is a perspective view of our combined school desk and seat, the latter being in the folded condition.
- Fig. 2 is a perspectiveview of the coacting parts of the pivotjoint or seat and desk coupling detached.
- Figs. 3 and 4. are face views of the seat coupling in the elevated and depressed conditions of the seat, respectively, the positions of the stops being indicated by dotted lines.
- Fig. 5 is a section of a portion of the seatframe and connected'slats.
- a and A are two corresponding castings, constituting the right and left sides, respectively, of our desk-frame.
- the opposing surfaces of these castings have, about their mid height, a segmental annular groove or recess, (J, concentric with the holes D, which receive the bolts E that pivot the seat-frames F F.
- the extremities of the recess are dovetailed to receive and hold rubber cushions G G.
- the seat-frames F F have cast upon them bosses or disks H H of somewhat lar er diameter than the groove O,'with which they are concentric; and the working-surfaces h of said bosses are flat, so as to afford a true and uniform bearing upon the main frames A A, thereby holding the seat-frames firmly in place while being shifted from the horizontal to the upright position, or vice versa, and enabling such changes to be made with as little friction and labor as possible.
- Projecting from the bearing-surface h are two lugs or stops, I I, which are adapted to enter and traverse the annular groove 0.
- the stop I preferably the larger one, is so located on the surface h as to impinge against the cushion G when the seat is lowered for use, and so as to bring the stop I, which may be of smaller size, against the other cushion, G, in the folded condition of the seat.
- the bosses H H have square or other non-circular central openings h, to receive the correspondingportions c of the pivot-pins or bolts E E, as fully shown in Fig. 3. Nuts e upon the screw-threaded extremities of the pivots E E maintain the bosses H H in proper contact with the main frames.
- the form'and location of the joint are such as to hold the seat securely in either position without the employment or necessity of any projection from the main frame, such as, in desks now. in use, circumscribe the passage-way when the seats are folded for dis missal of the pupils, and are liable to catch and tear their garments.
- teats or dowels K which project from the seat-frames and enter the substance of the slats L, assist in holding the slats in posi* tion and prevent any loosening of the screws by lateral disturbance of said slats.
- the space between the stops I I may be filled up, so as to constitute a single projection.
Description
s. cox &' w. w. FIANNING.
School-Desks.
No.135,089. Patentedlan.21,1873.
FIG-.l.
gkww w g kmw WWW) AM. PHara-urHos/mmlc ca M+f(manmvs mocsss) Atiys PATENT ()rrrcn SYLVANUS COX AND WILLIAM W. FANNING, OF RICHMOND, INDIANA.
IMPROVEMENT IN SCHOOL=DESKS.
Specification forming part of Letters Patent No. 135,089, dated January 21, 1873.
To all whom it may concern:
.Be it known that we, SYLVANUS COX and WILLIAM W. FANNING, both of Richmond, Wayne county, Indiana, have invented a new and useful School-Desk, of which the following is a specification:
Nature and Objects of the Invention.
This is an improvement in those schooldesks which'are supported in cast-iron frames, to which is hinged or pivoted a folding seat. The seat-frames are attached to the centers of the main frames or standards by pivotjoints, of simple and durable construction, adapted to operate without noise. The slats of which the seats are formed are secured to their arms by wood-screws, aided by projecting studs or dowels.
I General Description.
Figure 1 is a perspective view of our combined school desk and seat, the latter being in the folded condition. Fig. 2 is a perspectiveview of the coacting parts of the pivotjoint or seat and desk coupling detached. Figs. 3 and 4. are face views of the seat coupling in the elevated and depressed conditions of the seat, respectively, the positions of the stops being indicated by dotted lines. Fig. 5 is a section of a portion of the seatframe and connected'slats.
Of the above figures the first is drawn to a smaller scale than the others.
A and A are two corresponding castings, constituting the right and left sides, respectively, of our desk-frame. The opposing surfaces of these castings have, about their mid height, a segmental annular groove or recess, (J, concentric with the holes D, which receive the bolts E that pivot the seat-frames F F. The extremities of the recess are dovetailed to receive and hold rubber cushions G G. The seat-frames F F have cast upon them bosses or disks H H of somewhat lar er diameter than the groove O,'with which they are concentric; and the working-surfaces h of said bosses are flat, so as to afford a true and uniform bearing upon the main frames A A, thereby holding the seat-frames firmly in place while being shifted from the horizontal to the upright position, or vice versa, and enabling such changes to be made with as little friction and labor as possible. Projecting from the bearing-surface h are two lugs or stops, I I, which are adapted to enter and traverse the annular groove 0. Of these the stop I, preferably the larger one, is so located on the surface h as to impinge against the cushion G when the seat is lowered for use, and so as to bring the stop I, which may be of smaller size, against the other cushion, G, in the folded condition of the seat. The bosses H H have square or other non-circular central openings h, to receive the correspondingportions c of the pivot-pins or bolts E E, as fully shown in Fig. 3. Nuts e upon the screw-threaded extremities of the pivots E E maintain the bosses H H in proper contact with the main frames.
The form'and location of the joint are such as to hold the seat securely in either position without the employment or necessity of any projection from the main frame, such as, in desks now. in use, circumscribe the passage-way when the seats are folded for dis missal of the pupils, and are liable to catch and tear their garments.
In addition to the ordinary wood=screws J, teats or dowels K, which project from the seat-frames and enter the substance of the slats L, assist in holding the slats in posi* tion and prevent any loosening of the screws by lateral disturbance of said slats. The space between the stops I I may be filled up, so as to constitute a single projection.
Claim.
We claim as new and of our invention- The described arrangement of seat-frames F F having the bosses H H and bolts E E connecting them with the central intersecting portions of the standards A A, in the described combination with the circular grooves or cavities O and stops G G, I I, as and for the purpose set forth.
In testimony of which invention we hereunto set our hands.
SYLVANUS COX. WILLIAM W. FANNIN G.
Atte 3t Gno. H. KNIGHT, ABEL 8. STUDY.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US135089A true US135089A (en) | 1873-01-21 |
Family
ID=2204505
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US135089D Expired - Lifetime US135089A (en) | Improvement in school desks |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US135089A (en) |
-
0
- US US135089D patent/US135089A/en not_active Expired - Lifetime
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