US177549A - Improvement in school-seats - Google Patents

Improvement in school-seats Download PDF

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Publication number
US177549A
US177549A US177549DA US177549A US 177549 A US177549 A US 177549A US 177549D A US177549D A US 177549DA US 177549 A US177549 A US 177549A
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arm
socket
hub
rib
improvement
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Expired - Lifetime
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    • 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

  • Patented May 1876.
  • FIG. 1 is a side view of the improvement, the interior of the jointbeing shown by dotted lines.
  • Fig. 2 is a side view of that part of the joint which is contained in the standard of the apparatus, that part of the joint which is contained in the seat or desk arm being'shown in section, the relative position of the parts being the same as shown in Fig. 1.
  • r Fig. 3 is a vertical section taken in the plane of the line as a: of Fig. 2.
  • This invention relates to seats and desks for school furniture and consists in an improvement in the joint which connects the movable seat or desk with the standard.
  • the upper end of the standard is provided on one of its sides with a socket, arranged around a hub, through which hub the bolt that holds the seat or desk to the standard passes.
  • the socket does not extend all around the hub, but is terminated by a web, which extends outward from the hub, and which forms shoulders or stops to limit the movements of the movable seat or'desk on the standard.
  • That end of the arm of the movableseat or desk which comes next to the standard to form the joint is provided with a curved rib, which is so shaped and arranged that it can enter the curved socket formed in the standard, fitting therein between the hub and the outer wall of the socket.
  • This rib is made shorter than the socket, so that it can have motion endwise therein, and the ends of the rib are provided with cushions, which come in contact with the When the seat or desk arm and the standard are 2 brought together, and the rib of the arm placed side with a hub, B, which is perforated through its center, to receive an axial fastening-bolt, C, which fastens the seat or desk arm D to the standard.
  • a curved socket, E extends concentrically around part of the hub, the socket forming 'a recess, which occupies about three quarters of a circle, its ends being formed by the straight sides of a solid web, F, which extends from the hub to the edge of the .arm,
  • the arniD which in this example represents one of the arms of a seat, is provided, at that end where the joint is to be formed, with a curved rib, G, forming a semicircle, or thereabout, which projects from the plain inner face of the arm, and which is arranged to fit loosely in. the socket E, so that, as the arm is turned, the rib can move endwise in the socket around the hub.
  • the rib is not equal in height to the depth of the arranged that they shall not be flush with the front or rim of the socket, so that the face L of the arm will not bear, against the end of the hub, nor against the web, the face of the arm, when the nut K is drawn up, being pressed against the rim of the socket and web.
  • the place of the joint in the desk-arm may, if desired, come near the middle of the arm, instead of being near one end, as here shown.
  • the hub B having a segmental recess, E, and. a web, F, on one side, in combination with the arm D, provided with a segmental rib, G, adapted to set and work in'the recess E, substantially as described.

Description

J. P-EA'RD. SCHOOL SEAT.-
Patented: May 1876.
N PETERS, PHOTO LITHOGRAPNE shoulders at the ends of the socket.
"JOHN 'rnann or. BROOKLYN, NEW YORK.
IMPROVEMENT IN SCHOO L -SEATS.
Specification formingpa'i't' of Letters Patent No. 177,549, dated May 16,- 1876 application filed July 9, 1875.
To all whom it may concern:
Be it known that I, JOHN PEARD, of Brooklyn, in the county of Kings and State of New York,'have invented a certain new and useful Improvement in Joints for Seats and Desks for School Furniture, of which the following is a specification:
This invention is illustrated in the accompanying drawing, in which- Figure l is a side view of the improvement, the interior of the jointbeing shown by dotted lines. Fig. 2 is a side view of that part of the joint which is contained in the standard of the apparatus, that part of the joint which is contained in the seat or desk arm being'shown in section, the relative position of the parts being the same as shown in Fig. 1. r Fig. 3 is a vertical section taken in the plane of the line as a: of Fig. 2.
This invention relates to seats and desks for school furniture and consists in an improvement in the joint which connects the movable seat or desk with the standard. The upper end of the standard is provided on one of its sides with a socket, arranged around a hub, through which hub the bolt that holds the seat or desk to the standard passes. The socket does not extend all around the hub, but is terminated by a web, which extends outward from the hub, and which forms shoulders or stops to limit the movements of the movable seat or'desk on the standard. That end of the arm of the movableseat or desk which comes next to the standard to form the joint is provided with a curved rib, which is so shaped and arranged that it can enter the curved socket formed in the standard, fitting therein between the hub and the outer wall of the socket. This rib is made shorter than the socket, so that it can have motion endwise therein, and the ends of the rib are provided with cushions, which come in contact with the When the seat or desk arm and the standard are 2 brought together, and the rib of the arm placed side with a hub, B, which is perforated through its center, to receive an axial fastening-bolt, C, which fastens the seat or desk arm D to the standard. A curved socket, E, extends concentrically around part of the hub, the socket forming 'a recess, which occupies about three quarters of a circle, its ends being formed by the straight sides of a solid web, F, which extends from the hub to the edge of the .arm,
forming solid abutments, which limit the movements of the arm and sustain it at the end of its motions. The arniD, which in this example represents one of the arms of a seat, is provided, at that end where the joint is to be formed, with a curved rib, G, forming a semicircle, or thereabout, which projects from the plain inner face of the arm, and which is arranged to fit loosely in. the socket E, so that, as the arm is turned, the rib can move endwise in the socket around the hub. The rib is not equal in height to the depth of the arranged that they shall not be flush with the front or rim of the socket, so that the face L of the arm will not bear, against the end of the hub, nor against the web, the face of the arm, when the nut K is drawn up, being pressed against the rim of the socket and web. When my improvement is applied to desks the place of the joint in the desk-arm may, if desired, come near the middle of the arm, instead of being near one end, as here shown.
It will be perceived that the outer periphery of the rib G bears against the adjoining side of the socket in which it moves, and when one of the ends of the rib is brought against the web, the strain upon the arm throws the outside of the rib against the outer wall of the socket, by which means the necessary support is obtained for the desk or seat,both when extended for use and when folded. The strain in either case is made to fall upon one end or the other of the web F, andupon the outer wall of t; new
by Letters Patent, is-
The hub B, having a segmental recess, E, and. a web, F, on one side, in combination with the arm D, provided with a segmental rib, G, adapted to set and work in'the recess E, substantially as described.
In testimony that I claim the foregoing I have hereunto set my hand and seal this 3d day of J uLy, 187 5.
J. PEARD. [L. 8.]
Witnesses W. HAUFF, CHAS. WAHLERS.
US177549D Improvement in school-seats Expired - Lifetime US177549A (en)

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