US 1362143 A
Description (OCR text may contain errors)
APPLICATION FILED MAY I5. I9I9.
Patented D60. 14, 1920.
2 SHEETS-SHEET I.
APPLmATxoN FILED MAY I5. 1919.
2 SHEETS-SHEET 2- Patented Deo. 14, 1920.
@Hom/muso PATENT OFFICE.
DANIEL BOHRB, 0F SPOKANE, WASHINGTON.
Specication of Letters Patent. u Patented Dec. 14, 1920.
Application led Hay 15, 1919. Serial No. 297,328.
To all 'whom t may concern:
. Be it known that I, DANIEL ROHRER, a citizen of Canada, residing at Spokane,'inthe county of Spokane and State of Washington, have invented certain new and useful Improvements in Pocket-Knives; and I do 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. This invention relates to pocket knives, and it relates more specifically to an improved safety or locking-blade knife.
One object of this invention is to avoid every possibility of the blade being accidentally closed while in use, but to enable it to be very easily opened by proper manipulation of a releasing or lock-controlling element. A
A further object yis to provide locking means for the lock-controlling element, so as to avoid contact of the latter with the cutting edge of the locking blade, also t0 prevent accidental movement of the lock-controlling element when the blade is locked in its open position.
A further object is to provide a lock-controlling element which is also effective to prevent an accumulation of lint or other foreign matter in the housing which contains the blade when closed. y
Other objects and advantages may become apparent to persons who read the following details of description in connection with the accompanying drawings, in which l Figure 1 is a longitudinal sectional view, the section being taken only through the lock-controlling lever, the rivets which hold the parts of the knife handle together, and the pivot of the locking blade.
Fig. 2 is a view similar to Fig. 1 except that the parts are in the unlocking position,
the cam-lever or controlling element having its free end broken off.
Fig. 3 is a view similar to Figs. 1 and .2 except that the parts are inthe closed position.
Fig. 4 is a perspective view illustrating the locking blade and the cam-lever juxtaposed or combined to form a fish-scaling de- VlCe.
Fig. 5 is a perspective view of the knife that a modified form of cam-lever is employed.
1g. 8 is a view similar to Fig. 3, but embodying the modified form of cam-lever shown in Fig. 7. n
F1 9 is a View similar to Fig. 2, but embodylng the modified form of cam-lever.
4 F 1g. 10 is a View of the modified form of cam-lever detached.
Referring to these drawings in detail, in whichsimilar reference characters correspond with similar parts throughout the several views, and in which the knife handle 11 and blade 12 may be of any ordinary or approprlate construction in which' the latch spring comprises a blade-locking element 13:
y invention consists in the combination of these elements with an improved lockactuating or controlling element 14. such as illustrated separately in Fig. 2. The member 14 constitutes a combined` cam-lever and fishscaling device which is preferably formed of a sheet-metal blank and is channeled from end to end for receiving the ed e portion of the blade `12, as illustrated 1n Figs. 3, 4 and 5. At the normally inner edge of the member 14, it is formed with serrations 15 whichr are considerably deeper than the thickness of the sheet metal, so that the edge of the blade 12 is exposed through the series of openings formed -by the serrations 15, as clearly illustrated in Fig. 4. The thickness of the member 14 is substantially equal to the distance across the housing, in the handle 11, which receives the blade when closed, as clearly illustrated in Fig. 5, and this minimizes the passage of foreign matter into the housing, and moreover, when the member 14 is in its open position, any lint or other foreign matter which may have accumulated therein may be easily blown or picked out through the series of openings. The outer sides o f the member 14 are preferably itted snugly against the inner sides of the housing, and exert a spring action there.- against, so that this member will not be swung to openposition by its frictional engagement with the knife blade at the pivotal connection of the latter. In this connection, it is noted that the knife blade 12 and the cam-lever 14 are pivotally connected at 16 to the handle 11, and that a laterally and outwardly extending lip or manipulative element 17 is formed on the member 14 for engagement by a finger or thumb of the user when it is desired to swing the lever 14 from its closed position to its open position. At the inner or pivoted end of the lever 14, cam elements 18 are formed thereon, and each of these elements combines With the outer portion of the member 14 to form a camlever. The cam elements 18 press the locking element 13 out of engagement with a notch 19 'in the knife blade, when the camlever 14 is in its open position (as shown in Fig. 2) but When the knife is in its closed position (as shown in Fig. 3), or When the blade 12 is in the open position (as shown in Fig. l), the locking element 13 is in its nor-` mal position, and this normal position is the locking position when the blade 12 is open. However, when the blade 12 is closed, it is held in its closed position merely by the spring action of the locking element. oreover, when the lever 14 is in the position shown in Fig. 4, the locking element 13 also exerts its spring action upon this lever to hold it in its cooperative relation to the blade 12, that is, in such relation that the blade l2 and lever 14 form a very efficient iish-scaling device.
In lieu of the lever 14, (illustrated separately in Fig. 6), the cam-lever 20 may be employed. This cam-lever is also preferably formed of a blank of sheet metal, but the fish-scaling serrations are eliminated, and a spring locking or detaining element 21 is formed on the outer or rear end of the cam-lever. The free'end of the detaining or securing element 21 normally fits into a depression 22 inthe rear end of the handle 1 1. This provides a looking means which prevents contact of the edge of the blade 12 therewith. Moreover, it prevents the cam-lever 20 from being accidentally swung outwardly when the knife is in use. This lever 20 is' provided with a cam 23 atits inner end, and is pivotally connected at 24, that is, at a point between the pivot 16 and the middle portion of the handle 11.
Therefore, the cam 23 is in a position to press the locking element 13 out of engage- -ment with the blade 12, when the lever 20 is in the position shown in Fig. 9. However, when the cam lever is in its normal or self-locking position, the locking element 13 is in its nogrmal position. This cam-lever is also formed with a manipulative element '17 for the purpose described in connection with Figs. 1 to 6.
Although I have described these embodiments of my invention very specifically, it is not intended to limit this invention to these exact details of construction and arrangement, but changes may be made withand out of locking engagement With said,
blade, and a cam-lever operatable to control the locking and unlocln'ng movements of said bladelocking element, said camlever havin a channel extending therealong to receive t e edge of the blade'.
2. The combination in a ocket-knife, of a blade, a blade-locking e ement movable into and out of locking engagement with said blade, and acam-lever operatable to control the locking and unlocking movements of said blade-locking element, said cam-lever being fulc-rumed in the housing which receives the blade and being provided with a manipulative element extending transversely of the lever out of said housing over one side thereof.
The combination in a pocket-knife, of a blade, a blade-locking element movable into and out of locking engagement with said blade, a cam-lever operatable to control the locking and unlocking movements of said blade-locking element, and yielding means to secure said cam-lever against accidental movement relative to the handle.
4. The combination in a pocket-knife, of a blade, a blade-locking element movable into and out of locking engagement with said blade, and a cam-lever operatable to control the locking and unlocking movements of said blade-locking element, said cam-lever being fulcrumed in the housing which receives the blade and being provided with a transversely extending manipulative element which extends out of said housing over the side thereof, said cam lever beingv formed with a spring which extends out of said housing and engages with the rear end of the knife-handle to secure the cam-lever against accidental movement.
5. The combination in a pocket-knife, of a blade, av blade-locking element movable into and out of locking engagement with said blade, a cam-lever operatable to control the locking and unlocking movements of said blade-locking element, said cam lever having a channel extending therealong to receive the edge of the blade, and. means to engage the said lever and hold it out of contact with said edge.
6. The combination with a pocket knife having a handle, a blade pivotally7 mounted in the handle, and a blade locking strip mounted in the handle for engaging. the blade, of a cam lever pivotally mounted in the handle for engaging the locking strip and moving the .same out of a normal position, the cam leverbeing U-shaped in cross section to provide a shield extending about the cutting edge and along the sides of the blade, the portion of the shield extending about the cutting edge of the blade being provided with cross cuts.
In testimony whereof I have hereunto set my hand- DANIEL ROHBER.