US990067A - Blackboard-frame. - Google Patents

Description

w. H. soon, s3. BLAOKBOARD FRAME.

APPLIOATIOK TILED AUG. 19, 1910.

990,067. Patented Apr. .18, 1911.

' WITNESSES gmwuxm By ATTORNEY 1'"! Mom": I'ITIRB cm, WA QMINGTON. 0.1.:

WILLIAM H. SCOTT, $3., OF BANGOR, PENNSYLVANIA.

BLAGKBOARD-FRAME.

Specification of Letters Patent.

Patented Apr. 18, 1911.

Application filed August 19, 1910. Serial No. 577,951.

To all whom it may concern:

Be it known that I, VILLIAM H. Soo'rr, S12, a citizen of the United States, residing at Bangor, in the county of Northampton and State of Pennsylvania, have invented new and useful Improvements in Blackboard-Frames, of which the following is a specification.

This invention relates to blackboard frames and its object is to provide a frame to be supported on a wall by a permanently located cleat on which it is hung, but from which it may be quickly removed when it is necessary to clean or repair the board.

The frame provides for the instant removal of the board and has the chalk trough within the lower end of the frame to catch the dust, as will be more fully described in the following specification, set forth in the claims and illustrated in the drawings, where:

Figure 1 is a front view of the board. Fig. 2 is a rear view of same removed from the wall. Fig. 3 is a vertical sectional view of the board hung on the wall.

In the construction of this blackboard frame, a strip 5 is provided and is permanently secured to the wall by means of nails 8. Its upper side 6 is beveled and on same is adapted to fit and be supported the upper cross piece 7 of the frame. This cross piece 7 is one of the four sides of the frame and the lower cross piece 9 has at its rear side the bar 10 which supports on its upper edge 11 the slate blackboard 12 whose upper edge is retained by the lower side of the strip 5. The board may be of any desired width or length and is held against lateral movement by the beveled corner pieces 13 and the bar 10 is cut away at 1 1 so as to form in conjunction with the groove 15 in the upper side of the bar 9, the chalk trough 16 into which falls the dust from the board where it remains until the frame is removed for cleaning. With this construction, the blackboard may be entirely removed from the walls of the room when found necessary leaving only the bar 5 which fits between the angle pieces 13, remaining which may be utilized to carry pictures or maps as ordinary picture molding and may be of such an ornamental nature as to be a desirable feature in the decoration of the room. \Vhen a school room is to be used as a hall, the blackboards may be removed and pictures substituted or if found necessary, to provide a greater number of blackboards, the bar 5 which extends around the four walls of the room may be used to hang any number of boards.

It will be seen in Fig. 3 that the beveled side 6 of the molding strip prevents the board from being removed outward and falling from its support but which necessitates the lifting of the board from the molding. To complete the frame, the vertical bars 17 {1N3 provided to unite the bars 7 and 9 at each on It is obvious that the details may be otherwise modified and the parts differently arranged than shown in the drawings, without departing from the essential features above described.

What I claim as new and desire to secure by Letters Patent is:

1. In a blackboard, the combination with a molding strip adapted to be secured to the walls of a room, of a bar forming one of the sides of a frame and adapted to he slipped over the bar or removed when desired.

2. In a blackboard, the combination with a strip adapted to be permanently secured to a wall and having a beveled upper edge, of a cooperating bar forming a part of the blackboard frame and adapted to fit on the strip, a blackboard carried by the frame, and a chalk trough at the lower end of the frame.

3. In a blackboard frame, the combination with a strip secured to the wall of a building and having a beveled upper edge, of a bar forming a part of the blackboard frame and fitting on the upper edge of the strip, a blackboard carried within the frame, a groove forming the chalk trough made in the upper side of the lower bar of the frame, and a bar back of the said lower bar and supporting the blackboard.

In testimony whereof I affix my signature in presence of two witnesses.

WVILLIAM H. SCOTT, SR.

WVitncsses:

THOS. BOLGER, D. W. KELLEY.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G.

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