History of the Snap Frame - 1920 Patent
E. E. GALLUP. BIL L POSTING DEVICE.
Patented Jam. 6, 1920.
2 SHEETS-SHEET I .E, E. GALLUP.
BILL POSTING DEVICE.
APPL ICATION FILED NO.V.- 3. I91].
4 4. Patented Jan. 6, 1920.
2 SHEETS-SHEET 2- EDWARD E. GALLUP, OF PITTSFIELD, MASSACHUSETTS.
Specification of Letters Patent.
Patented Jan. 6, 1920.
Application filed November 3, 1917. Serial No. 200,160.
To all whom it may concern:
Be it known that I, EDWARD E. GALLUP, a citizen of the United'States, residing at Pittsfield, in the county of Berkshire and State of Massachusetts, have invented new and useful Improvements in Bill-Posting Devices, of which the following is a specification.
This invention relates to poster devices and aims to provide a board or base to which may be removably secured suitable advertising matter, such as posters, bulletins and the like.
The primary object of the invention is to provide a device of this character in which all of the edges of the sheet are securely clamped to the board and protected, thereby preventing such edges from becoming torn or mutilated by the wind or from other reasons.
The invention also aims to provide spring actuated clamps constructed so as to protect the actuating parts from the elements, the clamping member forming a housing for such parts. I
The invention further includes means whereby each of the spring actuated clamps may be held from engagement with the'board to facilitate the insertion of the poster matter there'beneath.