US488625A - Rotary blackboard - Google Patents

Rotary blackboard Download PDF

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US488625A
US488625A US488625DA US488625A US 488625 A US488625 A US 488625A US 488625D A US488625D A US 488625DA US 488625 A US488625 A US 488625A
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cards
cylinder
blackboard
rotary
rotary blackboard
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US case filed in California Northern District Court litigation Critical https://portal.unifiedpatents.com/litigation/California%20Northern%20District%20Court/case/4%3A11-cv-02178 Source: District Court Jurisdiction: California Northern District Court "Unified Patents Litigation Data" by Unified Patents is licensed under a Creative Commons Attribution 4.0 International License.
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    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
    • G09B1/00—Manually or mechanically operated educational appliances using elements forming, or bearing, symbols, signs, pictures, or the like which are arranged or adapted to be arranged in one or more particular ways
    • G09B1/02—Manually or mechanically operated educational appliances using elements forming, or bearing, symbols, signs, pictures, or the like which are arranged or adapted to be arranged in one or more particular ways and having a support carrying or adapted to carry the elements
    • G09B1/16—Manually or mechanically operated educational appliances using elements forming, or bearing, symbols, signs, pictures, or the like which are arranged or adapted to be arranged in one or more particular ways and having a support carrying or adapted to carry the elements the elements each bearing a plurality of different symbols, signs, or combinations of symbols and signs, only one symbol, sign, or combination thereof, of each element to be used at a time
    • G09B1/18—Manually or mechanically operated educational appliances using elements forming, or bearing, symbols, signs, pictures, or the like which are arranged or adapted to be arranged in one or more particular ways and having a support carrying or adapted to carry the elements the elements each bearing a plurality of different symbols, signs, or combinations of symbols and signs, only one symbol, sign, or combination thereof, of each element to be used at a time the elements being rotatable
    • G09B1/20—Manually or mechanically operated educational appliances using elements forming, or bearing, symbols, signs, pictures, or the like which are arranged or adapted to be arranged in one or more particular ways and having a support carrying or adapted to carry the elements the elements each bearing a plurality of different symbols, signs, or combinations of symbols and signs, only one symbol, sign, or combination thereof, of each element to be used at a time the elements being rotatable and bearing the symbols on a surface parallel to the axis of rotation

Definitions

  • This invention relates to certain appliances for school purposes whereby an improved method of object teaching is obtained which will be hereinafter more particularly described and pointed out.
  • Figure l is an end view of the device.
  • Fig. 2 is a horizontal view of the device.
  • Fig. 3 is a series of cards having certain figures on them.
  • Fig. 4 is a view of a modification of the device with its axis vertical.
  • A is a hollow cylinder which may be made of any suitable material, as wood or metal, and is to be slated, or covered with a black silicated cloth, to form a school blackboard.
  • the board may have its periphery of any convenient number of plane surfaces, instead of the circular form, in which case the plane surfaces may be of ordinary slates attached.
  • This cylinder, A has an axle, a, which is supported on brackets, a a, fastened to a base board, B.
  • the axle, a has a crank handle or may have a thumb screw a", at one end by which the cylinder can be rotated.
  • c c o, &c. represent elastic straps which are stretched longitudinally over the surface of the cylinder, A, at convenient distances apart, and, that such convenient distances may be obtained; buttons or hooks, c c c, &c., are inserted at each end of the cylinder, A, as shown in the figures, so that the distance apart of these straps, 0, may be regulated at the pleasure of the teacher to suit the size of the cards in use.
  • Fig. 3 is shown a series of cards marked 2, 3, X, 4, The same cards are shown as being held on the cylinder by the straps, c.
  • the cards will have various objects of natural history; for instance, domestic animals, a cat, &c.
  • the teacher will write the names in chalk on the cylinder, and after explanations will remove a card at a time and ask what the word reads, thus directing the attention 01' the pupil.
  • the pupil is gradually educated up to a close observation, and by this effort, memory becomes cultivated, and a knowledge of single and connected facts is rapidly acquired thereby.
  • This method can be employed in any branch of knowledge for object teaching.
  • a rotary cylindrical black-board having a series of bands arranged axially on the exterior surface, for retaining removable object cards in combination with said cards for the purpose of instruction, substantially as described.

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  • Engineering & Computer Science (AREA)
  • Business, Economics & Management (AREA)
  • Physics & Mathematics (AREA)
  • Educational Administration (AREA)
  • Educational Technology (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Drawing Aids And Blackboards (AREA)

Description

(No Model.)
J'.' F. CLARK. ROTARY BLAGKBOARD.
No.488,625. Y Patented Dec.27,1892.
WITNESSES J/VVEJVZ'OZ W %%Z 4@ MW UNITED STATES PATENT OFFICE.
JAMES F. CLARK, OF COLUMBIA SULPHUR SPRINGS, WEST VIRGINIA.
ROTARY BLACKBOARD.
SPECIFICATION forming part of Letters Patent No. 488,625, dated December 2'7, 1892.
Application filed April 13, 1892. Serial No. 429,013- (No model.)
To all whom it may concern:
Be it known that I, JAMES F. CLARK, a citizen of the United States, residing at Columbia Sulphur Springs, in the county of Greenbrier and State of \Vest Virginia, have invented certain new anduseful Improvements in R0- tary Blackboards; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the letters and figures of reference marked thereon, which form a part of this specification.
This invention relates to certain appliances for school purposes whereby an improved method of object teaching is obtained which will be hereinafter more particularly described and pointed out.
In the accompanying drawings forming part of this specification: Figure l is an end view of the device. Fig. 2 is a horizontal view of the device. Fig. 3 is a series of cards having certain figures on them. Fig. 4 is a view of a modification of the device with its axis vertical.
A is a hollow cylinder which may be made of any suitable material, as wood or metal, and is to be slated, or covered with a black silicated cloth, to form a school blackboard. The board may have its periphery of any convenient number of plane surfaces, instead of the circular form, in which case the plane surfaces may be of ordinary slates attached. This cylinder, A, has an axle, a, which is supported on brackets, a a, fastened to a base board, B. The axle, a,has a crank handle or may have a thumb screw a", at one end by which the cylinder can be rotated.
c c o, &c., represent elastic straps which are stretched longitudinally over the surface of the cylinder, A, at convenient distances apart, and, that such convenient distances may be obtained; buttons or hooks, c c c, &c., are inserted at each end of the cylinder, A, as shown in the figures, so that the distance apart of these straps, 0, may be regulated at the pleasure of the teacher to suit the size of the cards in use.
In Fig. 3 is shown a series of cards marked 2, 3, X, 4, The same cards are shown as being held on the cylinder by the straps, c.
In Fig. 4, the cylinder is placed vertically and the cards are arranged correspondingly.
The instructor in any branch of knowledge, by the use'of this device as a blackboard, will have his series of cards printed, engraved, painted or otherwise illustrated for the purpose of object teaching; such cards as he desires to employ in the lesson will be placed on the cylinder, to be held by the straps, c, as shown in the figures. To the right of these cards he will write in chalk the description device, figure, &c., of each card. In the example shown he instructs the class in arithmetic that 2 3x 4 is equal to 20.
For very young beginners the cards will have various objects of natural history; for instance, domestic animals, a cat, &c. The teacher will write the names in chalk on the cylinder, and after explanations will remove a card at a time and ask what the word reads, thus directing the attention 01' the pupil. As memory is predicated upon a fixed attention upon any particular object, the pupil is gradually educated up to a close observation, and by this effort, memory becomes cultivated, and a knowledge of single and connected facts is rapidly acquired thereby. This method can be employed in any branch of knowledge for object teaching.
I claim- A rotary cylindrical black-board having a series of bands arranged axially on the exterior surface, for retaining removable object cards in combination with said cards for the purpose of instruction, substantially as described.-
In testimony whereof I affix my signature in presence of two witnesses.
' J AS. F. CLARK.
. Witnesses:
S. S. CARPENTER, J. A. G. SHIPLEY.
US488625D Rotary blackboard Expired - Lifetime US488625A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3283420A (en) * 1962-11-14 1966-11-08 Andrew F Schott Calculator
US4026042A (en) * 1975-12-22 1977-05-31 Ames Alvin G Color toy device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3283420A (en) * 1962-11-14 1966-11-08 Andrew F Schott Calculator
US4026042A (en) * 1975-12-22 1977-05-31 Ames Alvin G Color toy device

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