Welcome! 

Register :: Login
Manufacturers Index - Skinner Chuck Co.
Patents
This page contains information on patents issued to this manufacturer.

Submitting Patent Information

If you find a patent number or patent date by this manufacturer that is not on this list, please contact the Site Historian.


Key to Links for Patent Information

USPTO = U.S. Patent Office . Images of the actual patent can be viewed on the U.S. Patent Office web site but a special TIFF viewer must be installed with your browser in order properly work. More information on how to configure your computer to view these patents can be found at TIFF image Viewers for Patent Images.
DATAMP = Directory of American Tool And Machinery Patents . A sister site to VintageMachinery.org with information on patents related to machinery and tools. A much easier user interface than the USPTO's for finding information on machinery patents.

Patent Number Date Title Name City Description
216,766 Jun. 24, 1879 Improvement in lathe-chucks James N. Skinner Windsor Locks, CT This chuck allows the jaws to move either separately or together.
221,746 Nov. 18, 1879 Lathe Chuck James N. Skinner Windsor Locks, Hartford County, CT
250,400 Dec. 06, 1881 Lathe Chuck James N. Skinner New Britain, Hartford County, CT
255,039 Mar. 14, 1882 Lathe-chuck James N. Skinner New Britain, Hartford County, CT Theodore G. Ellis - patent attorney
The object of my present invention is to provide a better method of shifting the ring which raises the rack for uniting the pinions oil the jaw-screws, and for holding it in place, when the rack is engaged with the jaws for making the chuck universal.

269,889 Jan. 02, 1883 Lathe Chuck James N. Skinner New Britain, Hartford County, CT
303,331 Aug. 12, 1884 Lathe Chuck James N. Skinner New Britain, Hartford County, CT
356,616 Jan. 25, 1887 Drill-chuck Calvin L. Butler Greenfield, MA It appears that once the patent expired, the inventor established Butler Chuck Co. and began manufacturing this chuck himself. We don't know if the assignee, who owned Skinner Chuck Co., ever manufactured the chuck. Skinner received an 1888 chuck patent 381,857, that he definitely manufactured.
381,857 Apr. 24, 1888 Drill Chuck James N. Skinner New Britain, Hartford County, CT
454,074 Jun. 16, 1891 Drill-chuck James N. Skinner New Britain, CT Seen in "Catalog 15B" from Seneca Falls Mfg. Co.: "The Skinner 'New Model' Drill Chuck (Patented June 16, 1891.)"
460,601 Oct. 06, 1891 Lathe-Chuck James N. Skinner New Britain, Hartford County, CT Simonds & Burdett - patent attorneys
I claim as my invention:
1. In combination, in a lathe-chuck, a sectional chuck-jaw, the two sections having flat meeting faces, a pivot-screw uniting the two sections, and a removable annular plug fitting corresponding sockets arranged opposite to each other in the meeting faces of the two jaw-sections, and the fastening screws whereby the sections are held from turning upon the pivot-screw, all substantially as described.
2. In combination, in a lathe-chuck, the chuck-body and the jaw-feeding devices, a chuck-jaw made in two sections and having flat meeting faces, the upper section extending the whole length and overlying the lower section, the pivot-screw uniting the two sections and upon which the upper section revolves, the removable annular plug extending into a socket in each jaw-section surrounding the pivot-screw, and the screws extending through opposite ends of the upper section, whereby it is held against rotary movement on the lower section, all substantially as described.
463,392 Nov. 17, 1891 Lathe-chuck James N. Skinner New Britain, Hartford County, CT Simonds & Burdett, patent attorneys
I claim as my invention:
1. In combination, in a lathe-chuck, a chuck-body having a central opening with a threaded hub-socket, the removable hub having a thread fitting said socket, the reversible chuck-jaws supported on the chuck-body and having a nut in the portion of the jaw projecting within the body, the radially-arranged jaw-screw having a shoulder adapted to thrust against the inner face of the flange of the chuck-body and with its inner end resting against the outer surface of the hub, all substantially as described.
2. In combination with a chuck-body formed in one piece cast to shape, the radial jaw-slots formed in the face of the chuck body, the central hub-socket having a thread adjacent to the face, there movable hub having a flange and a threaded portion at the upper end and fitting said socket and having a bearing against the substance of the chuck-body back of the face, the chuck-jaws having a threaded portion engaging the jaw-screw, the jaw-screw radially arranged within the body of the chuck with its end projecting beyond the periphery, a shoulder in contact with the inner surface of the flange of the chuck-body, and the inner end of the screw thrusting against the outer surface of the hub, all substantially as described.
3. In a lathe-chuck, in combination, the chuck-body opening on the back and having a face with a central threaded hub-socket, the reversible chuck-jaws arranged to move in the radial slots in the chuck-face and having a portion projecting within the body of the chuck, the removable hub having a threaded portion fitting within the hub-socket and in contact with the substance of the chuck-body back of the face of the chuck, the jaw-screw radially arranged within the chuck-body with one end projecting beyond the periphery and the inner end seated against the outer surface of the hub, the said screw having a shoulder in contact with the inner surface of the flange of the chuck - body and an annular groove within the said flange, and a locking-pin located in the flange and projecting into the groove, all substantially as described.
508,533 Nov. 14, 1893 Face-plate jaw James N. Skinner New Britain, CT
1,053,530 Feb. 18, 1913 Drill-chuck Albert A. North New Britain, CT