US177539A - Improvement in slates - Google Patents
Improvement in slates Download PDFInfo
- Publication number
- US177539A US177539A US177539DA US177539A US 177539 A US177539 A US 177539A US 177539D A US177539D A US 177539DA US 177539 A US177539 A US 177539A
- Authority
- US
- United States
- Prior art keywords
- slate
- cover
- slates
- improvement
- bar
- 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
- 239000010454 slate Substances 0.000 description 16
- 230000002441 reversible Effects 0.000 description 4
- 210000002832 Shoulder Anatomy 0.000 description 2
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
- B43L—ARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
- B43L1/00—Repeatedly-usable boards or tablets for writing or drawing
Definitions
- Figure 1 is a perspective view, showing the cover partly drawn out.
- Fig. 2 is a longitudinal section.
- Fig. 3 is a transverse section.
- the cover can be applied to either side of the slate to protect it, the other side being exposed for present use.
Description
w. J. MONTGOMERY. SLATES.
No.177,539. Patented May16,1'876.
FIG. I.
A'I 'TEST: I
mvsm'on:
N- PUERS, PHDTO-LITMOGRAPNERI WASHINGTON. D C.
UNITED STATES PATENT OFFICE.
WILLIAM J. MONTGOMERY, OF ST. LOUIS, MISSOURI, ASSIGNOR OF,ONE-
HALF HIS RIGHT TO CHARLES H. STONE, OF SAME PLACE. I
IMPROVEMENT IN SLATES.
Specification forming part of Letters Patent No. 177,539, dated May 16, 1876 application filed April 7, 1876.
v To all whom it may coitcer-n:
Be it known that 1, WILLIAM J. MONT- GOMERY, of the city and county of St. Louis, and State of Missouri, have invented a certain new and useful Improvement in School- Slates, of which the following is a full, clear,
' the'cover out of con tact with the face of the slate. The cover is reversible from side to side of the slate.
Figure 1 is a perspective view, showing the cover partly drawn out. Fig. 2 is a longitudinal section. Fig. 3 is a transverse section.
The slate-frame has a usual end bar, A, and side bars B B. O is a thin tie-bar, connecting together the ends I) b of the bars B B. The bars B B have, at theirinner edges, upon both sides of the slate, acute-angled grooves b b, which receive the similarly-shaped edges d d of the sliding cover D, said edges being made to slide in saidgrooves as the cover is forced in and out. d is the end bar of the coverslide, said bar being formed to lap around and embrace the tie-bar O, (as shown in Fig. 2,) when the cover is in position upon the slate. At the inner sides-of the guidegrooves I) 1), between said grooves and the slate E, are shoulders f, which prevent the cover coming in contact with the slate, and thus erasing characters marked thereon.
The cover can be applied to either side of the slate to protect it, the other side being exposed for present use.
Iclaim The combination of slate A B (J E, and reversible sliding cover D, substantially as set forth.
WILLIAM J. MONTGOMERY. Witnesses:
SAML. KNIGHT, R0131. BURNS.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US177539A true US177539A (en) | 1876-05-16 |
Family
ID=2246946
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US177539D Expired - Lifetime US177539A (en) | Improvement in slates |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US177539A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5599189A (en) * | 1995-09-07 | 1997-02-04 | Kees; Max O. | Reusable learning aid |
-
0
- US US177539D patent/US177539A/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5599189A (en) * | 1995-09-07 | 1997-02-04 | Kees; Max O. | Reusable learning aid |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US177539A (en) | Improvement in slates | |
| US422033A (en) | Ruler | |
| US260499A (en) | Heney t | |
| US1220468A (en) | Indentification name-plate for umbrellas. | |
| US911791A (en) | Handle attachment. | |
| US187682A (en) | Improvement in blackboard-rubbers | |
| US1061745A (en) | Means for locking type-forms in a chase. | |
| US233704A (en) | Fbedebick sohlet | |
| US265800A (en) | Extension-table | |
| USD31394S (en) | Design for a necktie-holder | |
| USD26020S (en) | Design for a razor-wiper | |
| US648067A (en) | Safety device for scarf-pins. | |
| USD25687S (en) | Design for a badge | |
| US265383A (en) | Carpenter s square | |
| US783755A (en) | Comb. | |
| US943765A (en) | Comb. | |
| US661274A (en) | Garment-stretcher. | |
| US364465A (en) | Half to chables e | |
| USD34051S (en) | Design for a monument | |
| USD27492S (en) | Design for a lens for gratings | |
| US1122595A (en) | Flexible rule. | |
| US157926A (en) | Improvement in belt clasps or buckles | |
| USD34792S (en) | Design for a metal bar | |
| US1179203A (en) | Changeable sign. | |
| USD20694S (en) | Design for a pressing-board |