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Well-Drilling Apparatus.

Description: Patent for an improved, simple, and efficient well sinking or drilling mechanism, especially meant for bit-securing devices, and the drill bits can be easily removed without removing the well tubing from the hole. The inventor uses "a stem or core carrying the drill bit and adapted to fit snugly in the bore of the tubing, together with a simple combination of devices whereby such stem or core can be locked against longitudinal and rotary movement by the manipulation of an operating rod which ex… more
Date: May 8, 1894
Creator: Horton, Stephen A.
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Partner: UNT Libraries Government Documents Department

Well-Drilling Apparatus.

Description: Patent for a well-drilling apparatus that easily attaches drill-bits to the ends of drill-tubes without removing the tubes from the well. It is meant for Artesian well-boring machines.
Date: April 9, 1895
Creator: Horton, Stephen A.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Car-Coupling.

Description: Patent for improvements in car-couplings “with means for elevating the coupling-link without the necessity of the brakeman going between the cars, and also to provide means for holding the coupling-pin out of engagement with the link when the cars are uncoupled, said pin being automatically released when the cars come together, so that it will fall by gravity and engage with said link.” (Lines 17-25) Illustration is included.
Date: June 2, 1891
Creator: Hamilton, Weston G.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Facing-Slip and Label Holder.

Description: Patent for improvements “in facing-slip and label holders to be used by mailing and postal clerks” (lines 13-14) “by providing a convenient and readily-accessible means in applying the facing-slips to packages of mail-matter and to adapt such holders for placement with respect to a case of letter-box as to always have such slips and labels with the receptacle containing the letters to receive a slip corresponding with such mail-matter.” (Lines 16-23) Illustration is included.
Date: June 16, 1891
Creator: Gaines, Thomas W., Jr.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department
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