US382591A

US382591A - Knife

Info

Publication number: US382591A
Authority: US
Publication date: 1888-05-08
Anticipated expiration: 1905-05-08

Description

women r M. OOWLES.

KNIFE.

No. 382,591. Patntd May 8. 1818 8 Irv/0671637",

WiinJJJ.

' (UNIT-ED I STATES PATE T OF ICE.

MARTIN COWLES, OF BRIDGEPORT, CONNECTICUT.

KNIFE,

SPECIFICATION forming par t a Letters Patent No. 382,591, dated May 8,1888.

Application filed May 23, 1887. Serial No. 239,044. (No model.)

- chopping-knives, pancaketurners, and similar culinary implements, and has for its object to simplify and cheapen their construction, while at the same time the attachment of the blades to the handles shall be greatly strengthened and the use of rivets and pins shall be wholly avoided.

With these ends in view I have devised the simple and. novel construction of which the following description, in connection with the accompanying drawings, is a specification, numbers being used to indicate the several parts. 7 I

Figure l is an elevation, partially in section, of a chopping-knife embodying my invention; Fig. 2, an elevation, also partially in section, illustrating my invention as applied to apancaketurner; Fig. 3, a detail view of one end of a chopping-knife blade detached, showing one form of slot which I- have used; Fig. 4, a detail section on the line 20 x in Fig. 1; Fig. 5, a detail view of the shank of a pancake-turner detached; and Fig. 6 is a detail view of the top of the blade of a pancakerturner detached, showing another form of slot which I have used.

1 denotes a blade,which may be of any suitable or preferred form or size, and 2 a slot or slots made in the metal of said blade at the top. The size, shape, and location of these slots are not of the essence of my invention, the gist of which lies in so forming these slots that the metal at or near the outer ends thereof shall overhang the inner portion of the slot.' This may of course be accomplished in various ways.

In Figs. 2 and 6 I have shown a straight slotwidest at the'bottom and tapering inwardtoward the top. This form I preferably use in any article having a straight shank or shanks.

In Figs. 1 and 3 I have shown the slot as made angularthat is, inclined first in one direction and then in the other -so that the metal at or ter are pressed down upon the blades.

the slot on both sides.

3 denotes the metallic shanks of thehand-les. These shanks may either be made curved, as

near the outer end of the slot shall overhang in Fig. 1, or'straight, as in Figs. 2 and 5.

Where two shanks are used, as in choppingknives, I preferably make the shanks curved,

substantially as shown, in order to give a more finished appearance to the completed article The lower ends of the shanks are providedwith grooves 4., to receive the metal of the over-' of the shanks should beso shaped and grooved as to correspond with the slots in the bladetherewith, as shown.the same 'being true if the shanks are made'straight, as in Figs. 2

and 5.

hanging outer ends of the slots in the blades. It will of course be understood that the ends that is to say, if the slot is made angular, asin Figs. 1 and 3, the shanks should correspond In assembling, the overhanging portionsof the metal of. the blades, which are designated by 5, enter slots 2 in the shanks,when thelat- The metal of theshanks at the opposite sides of slots 2 is pressed down firmly upon the blades,

thereby locking the shanks and blades so firmly together that it is impossible-to detach them in use. I thus dispense entirely with pinsand rivets and attach the shanks and blades to gether by a single blow. I

6 denotes the handles, which may be made of wood or any suitable material.

Inchopping-knives and other implements in which two shanks are used I preferably provide the upper ends of the shanks with,

sockets 7, having inwardly-projecting ribs or splines 8, and .provide tenons 9 upon the ends of the handles, the splines being forced into the wood or into grooves made for ,them, so

that the handles are prevented from" turning in use. The handles and shanks are'then secured together byscrewslO, which pass-through holes provided therefor in the shanks from the outer side and engage the woodwof the' handle.

It will of course beunderstood that the details of construction may be varied within reasonable limits withoutdeparting from thespirit of my invention.

I claim- 1. The improvement in the art of attaching shanks to blades, which consists in forming slots in the blades and grooves in the shanks, then inserting the ends of the shanks into the slots with the edges of the slots resting within said grooves, and, finally, applying lateral pressure to the metal of the shanks on lines perpendicular to the plane of the blade, thereby forcing said metal against the inner faces of the slots, and by the same operation compressing it against the lateral faces of the blade in proximity to the slots.

2. The method of attaching shanks to blades, which consists in forming .slots in the blades 20 having overhanging portions 5, and forming grooves on opposite sides of the shanks, then inserting the ends of the shanks into the slots with the edges of the overhanging portions resting in the groove, and, finally, applying lateral pressure to the metal of the shanks on lines perpendicular to the blade, thereby forcing said metal against the inner faces of the slots and beneath said overhanging portions, and at the same time compressing it against the lateral faces of the blade in proximity to the slots.

3. The combination, with a blade having a slot with overhanging portions 5, of a malleable shank having grooves on opposite sides and asolid central compressed portion between said grooves, substantially as set forth.

In testimony whereof Iatlix mysignatnrein presence of two witnesses.

MAR-TIN COWLES.

Witnesses:

A. M. \Voos'rER, J OIIN KEPPY.