US728861A - Knife construction. - Google Patents

Description

PATENTED MAY 26, 1903 W. GARMAN.

I KNIFE CONSTRUCTION.

APPLICATION FILED NOV. 4, 1902.

N0 MODEL.

luuemfoz Patented May 26, 1903.

PATENT OFFICE.

WILLIAM CARMAN, OF NAPANOCH, NEW YORK.

KNIFE CONSTRUCTION.-

SPECIFICATION forming part of Letters Patent No. 728,861, dated. 26,- 1903.

Application filed November 4,1902. Serial No. 130,090. (No model.)

To aZZ whom, it may concern:

Be it known that I, WILLIAM CARMAN, a citizen of the United States, residing at Napanoch, in the county of Ulster and State of New York, have invented certain new and useful Improvements in Knife Construction; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to knife construction, and more particularly to pocket-knives; and it consists of certain novel features of combination and construction of parts, the preferred form or materializat-ion whereof will be hereinafter fully described and claimed, reference being had to the accompanying drawings, which are made a part of .this application.

The prime object of my invention is to provide a simple attachment for an ordinary pocket-knife or the handle of a carving or other form of knife which will be found useful for a variety of purposes, inasmuch as it is desirable and efficient as a measuring instrument and also subserves the purpose of a screw-driver, saw, 850.

Other objects and ad vantages will be hereinafter made clearly apparent.

In the drawings, Figure 1 is a perspective view of an ordinary penknife provided with my invention and showing the same in an extended position. Fig. 2 is a detail view showing my attachment and its receiving-casing. Fig. 3 is a perspective view of my attachment removed. Fig. 4 is a side view showing another form of my invention. Fig. 5 shows the attachment presented in Fig. 4 separated from the handle, while Fig. 6 is a cross-section of Fig. 4 on line 0c 00.

In order to conveniently designate all of the details of my invention and the cooperating accessories, numerals will be employed, the same numeral referring to a similar part throughout the several views.

Referring to the numerals on the drawings, 1 indicates a handle of a knife of the usual or any preferred construction, which is provided in said instance with a pair of blades 2 and with corresponding mainsprings 4 and 5 and also with the division-plate 6. (More fully shown in Fig. 2.) This division-plate 6 not only serves the purpose of separating the two blades of'the knife from each other, as is common, but it is also provided at its outer end, or that end opposite the pivot-point of the blades, with the longitudinally-disposed slotted opening 7, designed to form a seat for the reception of the graduated shank 8 of my attachment, it being understood that one or both sides of said shank may be properly graduated, so as to fit it as an accurate measuring instrument. By providing the properly-located apertures 9 in the division-plate suitable rivets may be passed through the handle, thereby holding the several parts in reliable union and cooperation with each other. The outer end of the division-plate 6 is shortened, so as to be of less extent or reach than the handle proper, thereby providing the recess 10, into which is adapted to snugly fit the cross-head 11, carried by the graduated shank 8, thereby insuring that when said shank and its head are moved home within the handle the outer surface of said head 11 will be left flush with the end of the handle, and thereby preserve the contour of said end and also preserve the beauty of finish and appearance thereof. It will be understood that the extended ends of the T- shaped head will prove useful for a variety of purposes, as for reaching or hooking over objects which the user may readily direct toward him.

By reference to Figs. 2 and 3 it will be seen that the inner end oft-he shank 8 is provided with a preferably V-shaped recess 12, extending sharply into the end of 'the shank, and these ends thus formed may be sprung slightly apart, if desired, so as to insure that only the extreme inner bifurcated end of the shank will frictioually engage the contiguous edges of the slot 7. It will also be observed by reference to Figs. 2 and 3 that I have provided for one of the branches of the bifurcated inner end of the shank 8 an in-.

tegral extension or lug 13, which is adapted to engage the shoulder or offset 14:, formed upon one of the edges of the slot 7, thereby insuring that the shank 8 cannot be casually entirely withdrawn, though permitting said shank to be removed by a downward pressure upon the outer end, which will bring the spring-like terminals slightly toward each other sufficiently to permit the extension 13 to ride over the shoulder 14. The V-shaped elongated recess 12 also serves the useful purpose in enabling the attachment to be readily seated in its operative position when it is desired to assemble the parts together.

In Figs. 4, 5, and 6 I have shown aslightlymodified form of construction, wherein it will be observed that the shank (designated in said views by the numeral 15) is provided at its inner end with the lateral extension or finger 16, Which is designed to engage a contiguous part of the casing, and thereby prevent a casual withdrawal of the shank from its seat in the handle. By reference to Fig. 6 it will be observed that the inner corners of the mainspring 4 and 5 are cutaway, so as to provide a suitable recess adapted to receive the edge of the shank 15, while the inner half of the division-plate 17 is entirely removed, and since the end of the knife is properly removed for the reception of the shank 15 the latter may be readily forced home within the handle, leaving the outer edge 11 entirely flush with the handle proper.

It will be obvious that various modifications and changes may be made in the formation of the cooperating parts without departing from the spirit of my invention, and I therefore desire to comprehend in this application all possible substitutes and equiva- 1ents.

I preferin most instances to form the shank of hardened steel, and it will therefore be found that one of the uuserrated edges being left angular will form a most excellent scraper whereby the surface of an object may be smoothed down and polished,'as will be readily understood.

While I have enumerated a variety of purposes for which my improved knife attachment will be found desirable and efficient, it will be understood that it will be useful for the performance of other offices.

My attachment may be made of any preferred material deemed most suitable for the purpose and made a permanent part of the knife-handle, as hereinbefore described and illustrated.

Believing that the advantages and manner of making and using my improved attachment have thus been made clearly apparent, further description is deemed unnecessary.

Having thus fully described my invention, what I claim as new, and desire to secure by Letters Patent, is-

l. The herein -described attachment for knife-handles, comprising the combination with the handle proper of a division-plate having a longitudinal seat therein; a shoulder formed upon the lower edge of said seat; a shank adapted to move longitudinally within said seat, and means carried by said shank adapted to lie in the path of and engage the said shoulder whereby the shank cannot be casually slipped out of place, as set forth.

2. The herein-described attachment for knife-handles comprising the combination with the handle proper having a suitable sea-t provided therein, ot' a shank located in said seat, the said shank having its inner end bifurcated; a T-like head upon its outer end;

a lug located at the inner end of said shank adapted to engage a shoulder upon the lower face of the said seat whereby the shank cannot be casually slipped out of place substantially as set forth.

3. The herein-described attachment for knife-handles, comprising the combination with the handle proper, of a division-plate having a longitudinal seat therein; a shoulder formed near the outer end of said seat; a shank adapted to occupy said seat; means carried by said shank whereby casual displacement of said shank is prevented, said shank having its inner end bifurcated and slightly sprung open whereby the said bifurcated end may be drawn together while being inserted in said seat and adapted to spring apart when released thereby forcing said retainingmeans into the path of said shoulder substantially as set forth.

In testimony whereof I affix my signature in presence of two witnesses.

WILLIAM CARMAN. [1. 8.]

Witnesses:

GEORGE W. ECKERT, IRVINGE. CARMAN.

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