Manufacturers Index - Bridgeport Machine Tool Works
Bridgeport Machine Tool Works
Bridgeport, CT, U.S.A.
Manufacturer Class:
Metal Working Machinery
This page contains information on patents issued to this manufacturer.
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408,291
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Aug. 06, 1889
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Brake for Lathe Spindles
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Edward P. Bullard |
Bridgeport, Fairfield County, CT |
Claim:
My invention relates to certain new and useful improvements in brakes for use upon lathe-spindles or other rotating shafts; and the object of my invention is to produce a device of this description which shall be simple in construction and easy of application, whereby the movement of the shaft or spindle may furthermore, may serve as a lever for turning the spindle by hand, so as to unscrew the chuck or bring the latter into any position desired. |
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410,146
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Sep. 03, 1889
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Screw Cutting Machine
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Edward P. Bullard |
Bridgeport, Fairfield County, CT |
Claim:
My invention relates to certain new and1 useful improvements in screw-cutting machines, but more particularly to such machines`as are used in cutting large screws for assembling heavy machinery and like uses; and the object of my invention is to provide a simple and compact construction which shall be easy of operation, and in which undue complication shall be avoided, and furthermore and particularly does it consist in the arrangement of the chaser-bar Within and extending through the back-gear quill and standards, whereby strength and economy of space are promoted; and with these ends in view my invention consists in the construction and combination of elements |
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511,736
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Dec. 26, 1893
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Attachment forBboring-Mills
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Charles Leon Libby |
Bridgeport, Fairfield County, CT |
Claim:
In a boring mill or machine of like character, the combination with a properly supported crossrail, of uprights arranged upon either end, a taper attachment guide pivotally supported above said crossrail at one end to one of said uprights, while the other is made adjustable so as to be secured to the other of said uprights in an angular position with respect to the cross rail as desired. |
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514,719
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Feb. 13, 1894
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Boring-Mill
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Charles Leon Libby |
Bridgeport, Fairfield County, CT |
Claim:
The combination in a boring mill or ma chine of like character, a properly supported crossrail, a crossrail slide horizontally movable thereon, of a taper attachment guide placed above and adjacent to said cross rail and arranged to be placed parallel or at an angle therewith, a sliding block arranged to operate in a slot in said taper attachment guide, and the tool carrying mechanism supported on the cross rail slide as shown and" also in said sliding block substantially as specified. |
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