https://www.datamp.org/ Recently added patents en-us https://www.datamp.org/patents/displayPatent.php?id=85504&pn=788,788 Burglar Alarm Patentee: James Naser - Westminster, London, S. W. England Granted:1905-05-02

Abstract: This invention relates to burglar-alarms of the wedge type, which not only sound an alarm when an attempt is made to open the door, windowv, or the like, but at the same time form a wedge adapted to resist such opening. Such alarms hav e hitherto been constructed from sheet metal, two plates being hinged together at an acute angle to form a wedge, the movement of one plate caused by an attempt to open the door to which it is applied causing an alarm-bell to ring, a third hinged plate or other medium transferring the movement to the trigger of the bell. Owing to the weakness of the sheet-metal construction, such alarms have to be made of inconveniently large dimensions to attain anything like practical strength, and even then they are very easily damaged and do not offer much resistance against a persistent attempt to open the door. Claim: A burglar or similar alarm and door or like wedge comprising a block having a flat Io under face and an inclined upper face, a base-plate having side wings to form guides for the block, means for loosely securing the block between said wings to permit relative longitudinal movement and an alarm-bell on the base-plate having its trigger in contact with said block.
This is one of 84,796 patents currently in the database at datamp.org

]]> https://www.datamp.org/patents/displayPatent.php?id=85503&pn=1,869,369 Trimming Device Patentee: Fred E. Edgren - Chicago IL Granted:1932-08-02
Manufactured by Hyde Mfg. Co. - Southbridge MA


This is one of 84,796 patents currently in the database at datamp.org

]]> https://www.datamp.org/patents/displayPatent.php?id=85502&pn=271,826 Plate Holder for Photographic Cameras Patentee: Mathias Flammang - Newark, Essex County NJ Granted:1883-02-06
Manufactured by Scoville Mfg. Co. - New York NY

Abstract: The object of my present improvements is to produce a photographic plate holder neat and compact, and having as few projections as possible, so that it may be conveniently carried in the pocket of a photographer. To this end the improvements consist in the combination, with the frame and dark-slide of a photographic-plate holder and a head or stopper attached to its outer end, of a spring-catch adapted to he operated by the hand in grasping the head or stopper and a device on the frame of the holder for engaging the catch. Claim: The combination, with the frame and dark-slide of a photographic-plate holder and a, head or stopper attached to its outer end, of a spring-catch adapted to be operated by the hand in grasping the head or stopper and a device on the frame of the holder for engaging the catch.
This is one of 84,796 patents currently in the database at datamp.org

]]> https://www.datamp.org/patents/displayPatent.php?id=75444&pn=981,062 Boring Head Patentee: Herman Casler - Canastota, Madison County NY Granted:1911-01-10
Manufactured by Marvin & Casler Co. - Canastota, Madison County NY

Abstract: This invention relates to boring heads for use in connection with machine tools such as lathes, milling machines, drill presses, etc., and has for its chief object to provide a device of the kind mentioned which shall be simple and compact and capable of ready and accurate adjustment, and which shall also be thoroughly protected against the entrance of dirt, chips, and other foreign matter into the adjusting mechanism with consequent derangement or injury of the same. Claim: In a boring head, in combination, a body having in its rear an axial socket for attachment to the spindle of a machine tool and in its front a chamber opening into the socket, said body being also provided with a lateral socket, an annular chuck-plate mounted in said chamber and adjustable transversely therein, means mounted in said lateral socket and engaging the chuck-plate to adjust the same, and a ring positioned at the forward end of the said axial socket to prevent the entrance of foreign matter into said lateral socket when the chuck-plate is in an eccentric position, as set forth.
This is one of 84,796 patents currently in the database at datamp.org

]]> https://www.datamp.org/patents/displayPatent.php?id=85501&pn=1,207,064 Plier-Wrench Patentee: Arthur S.E. Metcalf - Driscoll ND Granted:1916-12-05

Adjustable jaw plier-wrench with rack teeth forming adjustable pivot points for the lever handle, and curved teeth on the end of the lever handle and sliding adjustable jaw.
This is one of 84,796 patents currently in the database at datamp.org

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