WHO KNOWS MORE ABOUT THIS A88? Made from iron. It is 6,3 cm long and hollow. Two parts. The inside of it is a mottled white and brown. The item does not come apart, the two halves are somehow fastened together
WHO KNOWS MORE ABOUT THIS MECHANICAL PLUMB BOB WITH THE EXCELLENT WOODEN BOX?
WER HAT INFORMATIONEN ÜBER DIESES MECHANISCHE SENKLOTE MIT SEINER ANGPASSTEN SCHUTZHÜLLE AUS HOLZ? (Coll G. SCH.)
Ich suche nach einem DEUTSCHEN SENKLOT, genannt "BLITZLOT", das von einem Markscheider W. Schulte als D.R.G.M 193259 angemeldet wurde. Dieser Gebrauchsmuster-Eintrag existiert nicht mehr, jedoch sind gute Beschreibungen vorhanden. Bisher kenne ich das Lot aus Zeichnungen im Katalog der Firma Reiss ca. 1907 und der Zeitschrift für Vermessungswesen von 1903. Es ist das einzige Senklot aus Deutscher Produktion, das auch nur annähernd mit den vielen patentierten Amerikanischen Technischen Senkloten vergleichbar ist. (Siehe Veröffentlichungen über PATENTIERTE SENKLOTE, SPEZIELL DIE PATENT NEWS 2007-46)
WER HAT EIN FOTO VON DIESEM GERÄT? WER HAT/KENNT EIN SOLCHES GERÄT?
2012 KONNTE ICH SO EIN "BLITZLOT" ERWERBEN. TROTZDEM BIN ICH AN WEITEREN INFOS INTERESSIERT
Das "BLITZLOT" von Markscheider W. SCHULTE
Schnittzeichnung aus Katalog REISS Liebenwerda
Seite aus Katalog REISS Liebenwerda. Für GROSSES BILD auf das Bild klicken.
Anzeige in Zeitschrift für Vermessungswesen 1903
This plumb bob from a Fellow Collector is marked: "0.1867 NATHAN & DREYFUS N.Y. DESIGN PATD MARCH 30. 1869" and around the top in a different script: "DREYFUS PAT MAY 21. 1867"
QUESTION: Is this a "born" patented plumb bob or built from parts of a patented instrument?
It is 16 cm (6 1/4 inch) high 6 cm (2 3/8 inch) diameter and weight is 3 lbs.
For information some drawings from these patents: (more see in the above mentioned article)
lubricator in position on the revolving shaft. In the patent we read: " ... Referring to the accompanying drawing, A represents the inverted close cup or reservoir, provided, say, with a screw-stopper, B, which, on removal, allows of its being supplied or replenished with the necessary lubricating material, and which has fitted onto it a wooden or other plug, C, that has passing through it and the stopper B, in a close but freely-turning manner, a loose rod or dasher, E, having a preferably roughened or irregularly-constructed lower end, that rests upon the shaft and fan or blade-shaped upper portion, which projects into or within the oil in the cup, and which, when the lubricator is inserted in its place by the fitting of the plug C through an orifice in the gland of the journal-box, is set in motion or revolved by the friction of the shaft in the rotation of the latter, causing, by such action of the rod or dasher, the oil to be warmed or worked around said rod in a thin or light stream onto the journal or bearing, but which, when the shaft ceases to revolve, stops and ceases the warm or work down the oil, and that, moreover, regulates the supply to the latter according to the velocity of the shaft. ...."
or in one sentence: ... it is a grease cup with a wire that ran up into the cup, as the wire heated from the friction of the bearing it would melt a little grease, which would run out the pin hole in the tip.
from the design patent
All information in one picture.
WHO CAN SEND ME A PICTURE OF AN ORIGINAL LUBRICATOR FROM DREYFUS?
A RECORD-plane and RECORD-plumb bob collector from Australia, David Lynch (link to his web site see page LINKS/IMPRESSUM) wrote me: "There are 9 sizes No. 00, No. 0, No. 01, No. 2, No. 3, No. 4, No. 5, No. 6 and No. 6½. Could you please ask if anyone has a Record Number 6 ½ Plumb Bob as I would like to get a photo of one or buy one."
WASHINGTON MONUMENT: Who has a picture of the 25 lbs PLUMMET / PLUMB BOB (hanging in a vessel of water ) that is used as a telltale plummet to show the slightest movement of the center of gravity of the construction of the Washington Memorial ????
WASHINGTON MONUMENT in Washington DC. 555 feet high.