US758142A

US758142A - Pocket or other knife.

Info

Publication number: US758142A
Application number: US16239203A
Authority: US
Inventors: Israel Kinney
Original assignee: Detroit Saw & Tool Works
Current assignee: Detroit Saw & Tool Works
Priority date: 1903-06-20
Filing date: 1903-06-20
Publication date: 1904-04-26
Anticipated expiration: 1921-04-26

Description

No. 758,142. PATBNTBD APB.. ze, 1904.

I. KINNBY; BUCKET-0R OTHER KNIFE. APPLICATION TILE!) JUNE 20, 1903.

N0 MODEL.

M j if@ f No. 758,142.

UNITED STATES l Patented April 26,1904.

PATENT OEEICE,

DETROIT saw a TooL woEKs, or DETROIT,

PORATION OF MICHIGAN.

MICHIGAN, A COR- A i PooKET on OTHER KNIFE.

SPECIFICATION forming part of Letters Patent No. 758,142, dated April 26, 1904. Application led une 20, 1903. Y Serial No. 162,392. (No model.) A

To @ZZ when?. #may concern:

Be it known that I, ISRAEL KINNEY, of the city of Toronto, in the county of York, Province of Ontario, Canada, have invented certain new and useful Improvements in Pocket or other Knives, of which the following is a. specification.

My invention relates to certain improvements on a knife patented to me inthe United States of America on June 24, 1902, under No. 702,968; and my object is to make the construction cheaper and better adaptedto double-ended knives.

With this object in view myl invention consists, essentially, in making the sides of the handle entirely separate or merely connected to such an extent as may be necessary to hold them in place, the spring-pressure being supplied by an independent bent spring engagingeach side of the handle, substantially as hereinafter more specifically described and then denitely claimed.

Figure l is a perspective view of my improved knife, showing the back. Fig. 2 is an enlarged cross-section through a', a in Fig. 1. Fig. 3 is an enlarged cross-section through y in Fig. 1. Fig. 4 is a perspective view of a modification, showing the front of the knife. Fig. 5 is an enlarged section through a a in Fig.` 4f Fig. 6 is a front plan view of Fig. 1 with the knife-blades open. Fig. is a side elevation of the same with one blade open. Fig. 8 is a perspective view showing a modified form of the connection between the halves of the handle. Fig. 9 is a longitudinal section through `the sides 'and 'blades of a knife provided with scale-pieces. Fig. 10 is a detail showing a countersunk rivet-head. Fig, 11 is a section through 1, a in Fig. 9. Fig. 12 is an elevation and section of a modification of the spring.

In the drawings like letters of reference .indicate corresponding parts inv the dierent views.

p The handle of the knife is formed in halves A A. These halves are preferably stamped out of metal, with a slightA hollow or round, as shown particularly in Fig. 3. The exact portant provided a iange t be .formed at the front edge of one half and a flange b at the tion of which will be hereinafter more particularly described.

It will noted on reference particularly to Fig. 6 that the sides of the handle are stamped out into a hollow convex form and that the ends are offset inwardly to contact with the butts of the blades. This not only affords the necessary room for the spring, but also gives the knife a suitably-rounded form to properly ll the hand when in use. The providing ofsuiicient room for the spring is probably the mostimportant function filled by this particular shaping of the handle, and, if desired, the center only of the sides may be thus pressed out and the ends lled up to the same level by the use of suitable scale-pieces, as indicated in Fig. 9. In' this view it will be seen that-the projection in the sides of the handle 'are in contact with one another, completely closingthe gap between the halves.

Each end of the half A, it will be noticed, has anges or projections E formed thereon to engage the butts of the knife-blades.

Each knife-blade is heldin place by means of a. rivet F, which passes through a hole formed in the side A' and aslot formed inthe side A, substantially as in my prior patent previously referred to.

While Il consider it preferable to have both ianges on one half of the handle, yet theiianges might be reversed at the opposite ends of the knife, this requiring, of course, a reversal of the positions of the slots and' holes for the rivets at opposite ends of the knife. The ends of the rivets may be provided with rounded rivet heads or washers c, as shown in Figs. 1, 2, 6, and 7 or countersunk heads or washers may be employed, as shown in Fig. 10, in which shape of this hollowing or rounding is notiml case the head or washer operating in the slot in the side A is of the dovetail form, as shown, to secure the necessary grip. This form is well adapted for use with the scale-pieces, such as shown in Fig. 9, as flush metal surfaces are thus obtained.

Instead of forming the flanges or projections E integral with the handle a separate pin E might be employed, as shown in Fig. 8, or the construction illustrated in Figs. 4 and 5 may be adopted. By these Views I show the flange or projection formed by a separate piece or yoke Gr, bent round the knife and clenched into a slight recess on one side of the knife. In this case the rivet F need not enter the side A at all, the bent piece G sufficiently holding the sides of the handle in position. When enlarged heads or washers are employed or when a separate piece or yoke is employed, they will' preferably be made of such thickness as to extend out to the level of the sides of the body of the knife, as shown particularly in Figs. .tand 6. (Note dotted lines.) If the projection or iange be formed as a pin, as shown in Fig. 8, the butt of the blade is preferably rounded, as indicated.

The spring C has its edges preferably serrated, as shown in Fig. 7, to better engage the sides of the handle. The spring operates substantially as shown 'in Fig. 7. When one blade is opened, the halves of the handle rock upon the rivet at the other end. The spring bends slightly as the knife-blade is opened up, maintaining at all times a spring-pressure on the halves, tending to press the anges or projections E into contact with the butts of the blades.

While the spring G may be simply sprung in position, as shown, yet it may also, if desired, be riveted in place and its exact shape widely varied from that shown.

In a single-blad ed knife the ends-of the sides of the handle remote from the pivot-point of the blade must be connected in such a manner as to permit of a slight rocking action of the halves in the plane of the blade. A simple rivet may be employed; but I may also employ the detachable connection shown in Fig. 8, in which hooks H are formed on the two halves, which engage one another, the pressure of the spring tending to thus hold them in engagement.

A knife constructed in accordance with my improvement possesses numerous advantages over the form shown in my prior patent. As the spring is entirely separate from the halves of the handle, the handle need not be made of spring metal, but of something softer and cheaper. I further find that it is preferable to stamp out two independent halves than to stamp both halves integral 'out of the same plate.

It will be seen that with a double-bladed knife when a blade is opened the sides rock from the opposite end, whereas with the integral spring-bridge shown in my prior patent the halves rocked on the central spring-brid ge, and as this was necessarily quite close to the ends the spring was very stiff and awkward. With the separate spring the rocking of the halves occurs at the'end, and the spring being separate can be made of fine quality clockspring steel, possessing a superior resiliency to the integral spring-bridge.

If more spring is desired than is possessed by the arrangement shown in Figs. 3, 6, and 7, I may employ a long spring, bent, as shown in Fig. 12, in which the two ends engage the lip or flange a on one side of the handle and the center the lip or flange b on the other side.

It will be noted that the iiange I) extends entirely across the back of the knife, so that the spring lies substantially in a plane parallel to the sides. The spreading pressure of the form of spring shown in Fig. 3 is thus entirely done away with. To retain the spring in place, I cut shallow grooves in the flanges c and which, however, do not interfere with the free action of the spring.

What I claim as my invention is 1. In a knife or similar article the combination of a handle comprising two metal sides having rocking connection between them; a blade pivotally connected to one side remote from the said connection; a ange or projection carried by the other side for engagement by the butt of the blade; and a spring sepa- 'rate' from .the handle engaging each side of the handle to hold the iiange in yielding engagement with the said butt, substantially as described. v

2. In a knife or similar article the combination of a handle comprising two metal sides 'having a rocking connection between them at one end; a blade pivotally connected to one side remote from the said connection; a flange or projection carried by the other side for engagement by the butt of the blade; and a IOO spring separate `from the handle engaging each side of the handle to hold the iiange in yielding engagement with the said butt, substantially as described.

3. In a knife or similar article the combination of a handle comprising two metal sides; two blades pivotally connected one to each end of one side; a flange or projection carried 'by the other side at each end for engagement by the butts of the blades; and a spring separate from the handle engaging each side of the handle to hold the iianges in yielding engagement with the said butts, substantially as described.

4. In a knife or similar article the combination of a blade; ahandle comprising two metal sides, the end of one side being provided with a round hole, and the end of the other with a slot and a projection designed to engage the butt of the blade; a rivet extending through IIS the butt of the blade into the said hole and slot; a rocking connection between the other ends of the metal sides; and a spring separate from the handle engaging the sides intermediate the ends to hold the projection in yielding engagement with the said butt, substantially as described.

5. In a knife or similar article the combination of a handle comprising two metal sides having a rocking connection between them; a blade pivotally connected to one side remote from the said connection; a liange or projection carried by the other side for engagement by the butt of the blade; a curved Hat spring arranged transversely in the space between the sides of the handle and suitably connected with the said sides to hold the flange in yielding engagement with the said butt, substantially as described. A l

6. In a knife or similar article the combination of a handle comprising two metal sides having rocking connection between them; a blade pivotally connected to one side remote from the said connection; a flange or projection secured to and carried by the other side for engagement by the butt of the blade; and a spring separate from the handle engaging each side of the handle to hold the iiange in yielding engagement with the said butt, substantially as described.

7. In a knife or similar article the combination of a handle comprising two metal sides hollowed on the inside, one having an internal lip near the front edge, and the other near the back; a curved flat spring engaging the the handle at one end and secured to the other.

side to form a ange for 'engagement by the butt of the blade; and a spring separate from the handle engaging each side of the handle to hold the ange in yielding engagement with the saidbutt, substantially as described.

Toronto, June 16, 1903.

"- ISRAEL KINNEY.

In presence of l J. EDW. MAYBEE, A. J. CoLBoURNn.