US439323A

US439323A - Half to b

Info

Publication number: US439323A
Authority: US
Publication date: 1890-10-28
Anticipated expiration: 1907-10-28

Description

(No- Model.)

J T. JEFFERSON REVERSIBLE 30133033.

No. 439,323. Patented Oct. 23, 1390.

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UNITED STATES PATENT OFFICE.

JOHN THOMAS JEFFERSON, OF ANNAPOLIS, MARYLAND, ASSIGNOR OF ONE- HALF TO B. LOUIS LANKFORD, OF SAME PLACE.

REVERSIBLE SCISSORS.

SPECIFICATION forming part of Letters Patent No. 439,323, dated October 28, 1890.

Application filed September 13, 1890. Serial No. 364,898. (No model.)

To all whom it may concern.-

Be it known that 1, JOHN THOMAS J EFFER- SON, a citizen of the United States of America, residing at Annapolis, in the county of Anne Arundel, in the State of Maryland, have invented certain new and useful Improvements in Scissors, of which the following is a specification.

My invention relates to detachable handles for scissors-blades, which are provided for that class of scissors known as reversible scissors, wherein the blades are provided with double cutting-edges, and has for its object to improve and simplify the construction thereof over the existing prior state of the art.

To this end the invention consists in the novel construction and arrangement of the several parts, as will be hereinafter more fully described, and particularly pointed out in the appended claim.

I have fully and clearly illustrated my in-.

vention in the accompanying drawings, where- 1n- Figure 1 is a perspective View of my improved scissors complete, ready for use. Fig. 2 is a side elevation of the same, and Figs. 3 and 4 are detail views.

Similar letters of reference indicate corresponding parts in the several figures.

A designates a pair of scissors, the blades to a of which are provided with double cutting or working edges b b b b, terminating at the pivotal point of the two blades, the pivot c constituting the fulcrum upon which the blades work. These blades may be of the ordinary or any approved construction.

B B designate disks or collets, which are formed upon the outer faces and rear ends of the blades, and have therein screw-threaded central perforations b b which are adapted to receive the ends of the clampingscrews, which are passed through said central perforations, and central perforations in corresponding disks or collets D D, formed upon the free ends of projecting stems, which in turn are formed upon a pair of rings, which will be hereinafter more fully explained.

Secured to the disks or collets B B upon the ends of the scissors-blades are pins 01 d d d, (four in number,) the pins (Z d upon the disk, rear end, and outer faces of the upper blade projecting therefrom in an upwardly direction, while the pins (1 (1 upon the disk, rear end, and outer face of the lower 5 5 blade project in a downwardly or opposite direction from those of the upper blade, and in alignment with each other These pins take into or register with a series of sockets formed in the under faces of the disks or 001- lets D D,formed upon the free ends of stems E E, which in turn are formed upon the rings F F, and serve when the pins are projected within the sockets in the disks or collets D D to hold the adjustable and detachable handles firmly in their normal position without any liability of displacement, as clearly shown in Figs. 1 and 4 of the drawings, these disks or collets, stems, and rings last named constituting the adjustable and detachable han- 7o dles of the scissors-blades I G G designate clamping-screwsone for each pair of disks or collets-the screwthreaded ends of which are passed through the central screw-threaded perforations in the 7 5 disks in opposite directions, the ends of each clamping-screw being in alignment with each other and terminating flush with the inner face of the upper and lower scissors-blades.

My scissors are simple in construction, durable, and cheaply manufactured, and in case of transportation will occupy but little space or room by simply detaching the handles.

From the foregoing description, taken in connection with the accompanying drawings, the operation of my scissors will be obvious, but may be here briefly rehearsed as follows: The operator upon perceiving that one cutting-edge of each blade is becoming dull, and 9c wishing to dispense with their use temporarily, to use the opposite cutting-edges of the blades, he has only to partially unscrew or loosen the handles from the'blades by means of the clamping-screws and conveniently reverse or shift said blades and handles over to the opposite edges of the blades, which brings the sharper cuttingedges of each blade into requisition, thus lengthening the duration of time in using the scissors before I00 both blades require sharpening.

Having thus described my invention, what I claim as new, and desire to secure by Letters stantially as described, and for the purpose Patent, is set forth. 4

In a reversible scissors, the combination of In testimony whereof I have hereunto set the two-edged blades formed with disks B, at my hand in the presence of two attesting wit- 5 their rear ends provided with pins cl cl, the nesses.

handles formed with the disks coincident with the disks on the rear ends of the blades, JOHN FHOMAS JEFFERSON and having radial sockets to engage the pins Attest: in the disks on the blades, and clamping- J 0s. ED. ABBOTT, :0 screws to hold the disks in engagement, snb- E. P. HOPKINS.