US2305476A - Saw knife - Google Patents

Description

,Dec.15,1942 Cf?. JGHNSON 2,305,4'1'6` f SAW KNIFE Filed Juiy 25, 1941 9, N H "n e gigi I4 :Ils 1 cHmsTiAN sa Jonsson ATTORNEY Patented Dec. 15, 1942 UNITED STATES PATENT OFFICE sAwKNrFE Christian F. Johnson, Pierce, Idaho Application July z5, 1941,'seria1 No. 404,037 s claims. (on :4c-144) This invention relates to a saw knife-in which is combined the elements of a slicing knife andv a saw blade coupled together by means of a single handle so that, in one tool, slicing and sawing operations can be performed alternately.

It is well known that with campers andl hunters, and around the household there are many occasions when a toothed elementy having the characteristics of a saw would be extremelyuseful for severing bones and the like, which are yotherwise difcult to handle with a knife alone.

It is ynot always convenient to have such a saw readily available at all times,.but by combining it withA a knife blade in a single tool ina simple'and leiicient manner it can be easily and usefully accomplished according to the principles ofmy inf vention. ,v

More particularly my invention relates to a handle that is useful for both the slicing and the sawing operation, and in the latter operation the handle is arranged in the manner of -a pistol grip in order to facilitate the sawing operation.r Yet, during the slicing operation, there is no material difference in operation or convenience between my handle and a conventional knife handle.

An important object of my invention is the provision of an improved saw knife in which are combined a slicing blade and a toothed sawing blade associated with a unitary handle 'in order to facilitate the alternate use of the saw or knife elements.

Another object 0f my invention is the provision of a handle arrangement for a saw-knife which is easy to construct, simple to assemble, and may be adjusted and arranged for varying uses, quickly and eflciently even by those who are not skilled mecchanics.

A further object of my invention relates to the' provision of a U-shaped pistol grip adapted to enclose a handle of a knife in one position but which can be adjusted to form a pistol grip and is so arranged as to stay in either position without slipping or dislodgement.

Other objects and advantages of the invention will be apparent during the course of the following description:

In the drawing forming a part of this specification and in which I have illustrated a preferred form of my invention:

Figure 1 is a plan view of my saw knife,

Figure 2 is a plan view with portions broken away for convenience of illustration, of the saw knife of Figure 1 but with the handle member arrlged for the performance of the sawing opera on,

Figures 3, 4, 5 and .6 are cross-sectional views taken through the handle and blade as variously indicated throughout Figures 1 and 2,

Figure 7 is a cross sectional view of the handle end, and

Figure 8 is a fragmentary elevational view illustrating a modified arrangement by which my handle is lodged inthe pistol grip position.

Throughout the drawing, where like reference numerals refer to like parts, the numeral I0 designates the blade ofthe saw knife having the slicing edge I2 andthe toothed edge I4 which are on vopposite side edges of the body l0. As show n in Figures 1 and 2, the knife edge I2 vcurves on its forward end to the tip I5 where it intersects the line ofthe saw teeth that are shown as arranged in substantially a straight Iine On-its rear end the blade II) has the narrowed handle extension' I6 on each side'of which are fastened handle halves I8, I8 by means of rivets I9 and 20. The slot 2I is formed through the handle halves I8 and the member I6 and, adjacent the rear end of the slot the handle halves are grooved at 22 all for a purpose to be described later. The end extremity of the handle has a horn 24 that extends from the edge of the handle that is approximately in line with the knife blade I2 and overhangs a portion of the hand at times.

A U-shaped metal handle. sheath 28 has the pivot pin 28 that vpasses through the slots 2I so that the sheath is slidably movable with relation to the handle comprising elements I8 and I8 and also permitted to swing about the axis of the pin 28. Towards the outer end and on either side of the sheath 26 I form elongated indentatlons 30 which cooperate with the grooves 22 when the sheath is in the position shown in Figure 1.

In order to arrange the sheath in the position shown in Figure 2 from that of Figure 1the sheath is drawn outwardly or longitudinally so that the pin 28 -slides in the slot 2l until the indentations 30 are disengaged from the groove 22 on either side of the handle. The sheath may then be swung about the axis of the pivot pin 28 until thelip 32 engages the edge of the handle to act as a stop and to maintain the angle of the sheath as well as to actas a guard against they sheath swinging further forward.

The sheath is grasped in the manner of any tool having a pistol grip and with thesaw teeth directed downwardly, the sawing operation may be easily performed.

As shown in Figure 8 there is a notch Il formed in the edge of the handle with which the lip or stop 38 engages to prevent, under certain circumstances, the handle sliding forward from its adjusted position.

To close the handle again into its compact arrangement, the U-shaped member or sheath is swung into longitudinal alignment with the slot claims, without departing from the spirit thereof.

Having thus described my invention, I claim:

l. In a saw knife of the type wherein a blade is edged as a knife on one side and as a saw on the other, a handle extension on one end of said blade having a longitudinal slot, a sheath of U- shaped cross-section adapted to closely enclose said handle extension and having a pivot pin slidable in said slot, grooves in said handle parallel to said slot, indentations in said sheath slidably cooperable with said grooves to prevent unintentional swinging of said sheath about the axis of said pivotpin on occasion, and a stop lip on said sheath cooperable with the handleside when the sheath is adjusted tothe pistol grip position to maintain that position.

2. In a saw knife of the type wherein a blade is edged as a knife on one side and as a saw on the other, an extension on one end of said blade having handle halves on each side and a longitudinal slot therethrough, a sheath of U-shaped cross-section adapted to closely enclose said han die extension and having a pivot pin in said slot, a groove in each said handle half parallel to said slot, and indentations 1n said sheath slidably cooperable with said grooves to prevent unintensaid slot, grooves in said handle extending in alignment with said slot tothe end Iof the handle, and elongated indentations in said sheath slidably cooperable with said grooves to prevent unintentional swinging of said sheath about the axis of said pivot pin on occasion.

4. In alsaw knife of the type wherein a blade is edged as a knife on one side and asa saw on the other, a handle extension on one end of said blade having alongitudinal slot, a sheath of U- shaped cross-section adapted to closely enclose said handle extension and having a pivot pin slidable in said slot, grooves in said handle parallel to said slot, and indentations'in saidsheath slidably cooperable with said grooves to prevent unintentional swinging of said sheath about the axis of'said pivot pin on occasion.

5. In a saw knife of the type wherein a blade is edged as a knife on one side and as a saw on the other side, a handle having substantial thickness on one end of said blade and provided with a longitudinal slot, a sheath of U-shaped cross-section adapted to closely enclose said handleand slidably movable with relation thereto, a pivot pin passing through said sheath and said slot, and means between saidy sheath and said handle to prevent unintentional swinging of said sheath about the axis of said pivot pin on occasion. y

CHRISTIAN F. JOHNSON.

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