US10490A - Dental chair - Google Patents
Dental chair Download PDFInfo
- Publication number
- US10490A US10490A US10490DA US10490A US 10490 A US10490 A US 10490A US 10490D A US10490D A US 10490DA US 10490 A US10490 A US 10490A
- Authority
- US
- United States
- Prior art keywords
- dental chair
- dental
- shafts
- seat
- segment
- 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
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 210000003414 Extremities Anatomy 0.000 description 2
- 210000001364 Upper Extremity Anatomy 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000000875 corresponding Effects 0.000 description 2
- 230000003028 elevating Effects 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/02—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable
- B60N2/04—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable
- B60N2/16—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable height-adjustable
- B60N2/1605—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable height-adjustable characterised by the cinematic
- B60N2/161—Rods
- B60N2/1615—Parallelogram-like structure
Definitions
- My improvement refers to the method of raising or lowering the seat of dental or other chairs, and consists in connecting the seat with four or more arms of horizontal shafts, so as to give it a vertical motion by the revolution of said shafts, effected by cog wheels upon them, one of which, meshing into a segment rack moved by a screw, operates the whole system.
- a is an iron bottom plate.
- Z) Z) are two segments of cog wheels, the segment Z) secured to the middle of the shaft 0 and the segment b. to the middle of the shaft 0, the segment I) meshing into the segment rack (Z movable longitudinally by the screw 6, as seen in Fig. 2, the screw being held stationary by the collars f f,
Description
A. M. ASAY. DENTAL 0mm,
N0.1 0,490. Pa'tentedFeb. 7, 1854.
UNITED sTATEs PATENT OFFICE.
A. M. ASAY, OF PHILADELPHIA, PENNSYLVANIA.
DENTAL CHAIR.
Specification of Letters Patent No. 10,490, dated February 7, 1854.
To all whom it may concern:
Be it known that I, A. MERRITT ASAY, of the city and county of Philadelphia and State of Pennsylvania, have invented a new and useful Improvement in Dental Chairs; and I do hereby declare that the following is a full, clear, and exact description of the construction and operation of the same, reference being had to the annexed drawings forming part of this specification, in "\vhich Figure 1 is a side elevation of the chair. Fig. 2 is a side elevation of the elevating apparatus. Fig. 3 isa plan of the same.
Similar letters in the several figures refer to the same part.
My improvement refers to the method of raising or lowering the seat of dental or other chairs, and consists in connecting the seat with four or more arms of horizontal shafts, so as to give it a vertical motion by the revolution of said shafts, effected by cog wheels upon them, one of which, meshing into a segment rack moved by a screw, operates the whole system.
In the drawings a is an iron bottom plate. Z) Z) are two segments of cog wheels, the segment Z) secured to the middle of the shaft 0 and the segment b. to the middle of the shaft 0, the segment I) meshing into the segment rack (Z movable longitudinally by the screw 6, as seen in Fig. 2, the screw being held stationary by the collars f f,
while the upper extremity of the rack forms the nut. F astened to the shafts c 0' are the arms 9, having in their extremities most remote from the shafts the rollers h, which run in the ways or guides m, secured to the seat of the chair, the pins n upon which the rollers it turn extending beyond the'arms, and by means of the flanges 0 keeping the rollers against the ways m, so as to draw the seat up or down as theshafts 0 0' revolve.
This operation is shown in Fig. 2. Whenit is required to move the seat vertically, the crank a" is turned, pushing forward or withdrawing the rack and causing a corresponding revolution of the shafts 0 0,
which by means of the arms 9 elevates or nesses.
A. MERRITT ASAY.
WVitnesses:
JOHN THOMPSON,
J. S. CLAR
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US10490A true US10490A (en) | 1854-02-07 |
Family
ID=2070814
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US10490D Expired - Lifetime US10490A (en) | Dental chair |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US10490A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2592025A (en) * | 1948-10-23 | 1952-04-08 | Gray Anna Marie Mccormick | Invalid chair |
| US2599296A (en) * | 1948-05-26 | 1952-06-03 | John A Toomey | Utility height adjustable crib |
| US2840831A (en) * | 1955-12-02 | 1958-07-01 | John J Kedrowski | Baby crib structure |
-
0
- US US10490D patent/US10490A/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2599296A (en) * | 1948-05-26 | 1952-06-03 | John A Toomey | Utility height adjustable crib |
| US2592025A (en) * | 1948-10-23 | 1952-04-08 | Gray Anna Marie Mccormick | Invalid chair |
| US2840831A (en) * | 1955-12-02 | 1958-07-01 | John J Kedrowski | Baby crib structure |
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