US64891A

US64891A - Thomas a

Info

Publication number: US64891A
Authority: US
Publication date: 1867-05-21
Anticipated expiration: 1884-05-21

Description

A @uiten tat-tss hstwt @frs THOMAS A. ivre-rArttArID, or MnAnvlLLn, PENNSYLVANIA. Leners Patent No. 64,891, dated-May 21, 1867.

IMPROVEMENT 1N GAN-operen.

T0 ALL WHOM IT MAY CONCERN:

Be itknown that I, THOMAS MCFARLAND, of Meadville, in the county of Crawford, andState of Pennsylvania, have `invented a new and useful Implement for- Opening Oyster, Fruit, and other Cans, of which the following is a. full, clear, and exact description, reference being had to the accompanying drawing, which makes part of this specification, and which represents ya view in perspective of my improved cnn-opener.

It is the object of my invention to provide va cheap, silnple, and eiTective implement for cutting an opening in a can by a single blow; and to this end my'improvementconsists in vcombining in a socket a series of curved pointed teeth, so arranged that when trst forcing their way into the can their points shall be in contact with it and thus diminish the resistance to be overcome, and, consequently, the amount of force to be expended; but as the cutting continues, the cutting edges expand until they meet those of the adjacent cutter, and thus punch out a piece of the form circumscribed by the teeth. I v

To carry out the object of my invention I provide, (as shown in the drawing) a suitable handle, A, having a header stock ,`B, of a diameter corresponding to that ci' the cutter. Upon v't-his head I turn a shoulder, a, to

receive a series of tooth-shaped cutters, C, curved to fit the handle, und fastened by screws or other suitable means. I also bevel the teeth on their inner edges, but leave them flush on their outer sides. It will bc seen that'the cutters touch each other at their bases, but that their points are some distance apart. 'lhe cut-ters, it

is obvious, might be formed either of la single piece or ofsections, separately secured to the handle. The cans to which my invention is applicable are made of sheet tin'or some similar linaterial.

In operation the tool is placed on the' head ofthe can, and the points of the teeth driven in by a smart blow, and the cutters forced down until thcrforks or. bases have cut through the can, when a piece will have been cutout of the form of the. cutters. The teeth being bevelled on the inside tend to compress the plug removed, and cause it to remain inside the cutter, thus i'nciltatingits removal from the can. A single blow will generally be suiicient to cut the opening.

I am aware that it has been proposed to open cans by the use of a single, cutter operating like thesingle blade of a shear, that is, requiring several cuts or blows to remove the plug. I am also aware that cutters have been used in combination with separa-te spring handles sliding through u ring, and thus compressing the cutters to cut a tapering plug out of cork or other soft substance.

I, therefore, do not claimvbroadly cutting an opening in a can, but-- Having thus fully described my improvement, what I claim therein as new, and desire to secure by Letters Patent, is-

As a new article of manufacture, the can-opener consisting of the handle A and cutters C, constructed, arranged, and operating as described for the purpose of cutting out a disk or plug at a. single blow, as set forth.

" fr. A. MCFARLAND.

Witnesses:

WM. F. MGNAMARA, ALBERT W. BROWN.