US2632949A - Knife - Google Patents

Description

March 31, 1953 P. FALCONE 2,632,949

KNIFE Filed Sept. l'?, 1951 Pasquale Falcons INVENTOR.

. u iu s ht Patentecl Mar. 31, l953 '1'; f

UNITED STATES: PATE f KNIFE Pasquale Falcone, Bronmfl. Ye Application September 17, 1951, Sel No. 246,939

The present invention relates to new and useful improvements in knives of the projectable and r'etractible blade type and has for one of.

important objects to provide, in a manner as hereinafter set forth; a device of this character comprisingnovel means for positively locking the spring actuated slidable blade in retracted position, thereby insuring'saiety.

' Another very" important object of the invention is to provide a knife of the aforementioned char:- acter which embodies a unique construction and arrangement whereby the. blade will be firmly supported in projected or operative position.

"Other objects of the invention areto. provide a knife of the character described which willbe. comparatively simple in construction, strong, durable, reliable in use, compact, light in weight,

attractive in appearance-and which may be manufactured at low cost.

- All'of the foregoing andstill further objects and advantages of the invention will become apparent from a study of the specification, taken in connection with the arccompanying drawing,

wherein like characters or referencedesignate corresponding parts throughout the several views, and'wherein;

Figure l" is perspective-view" oi the knife" with the blade in retracted position; 7 s

Figure 21s a perspective view, showing the blade m proj'ected position;

Figure tl is a bottom plan newer the handleand a. top: plan view of the removable: plate,

showing the parts separated;

I Figure 4- is a view in verticallongitudinalsec tion, taken substantially on the line 4-4 of Figure: 1;

4 Figure 5 is a view in vertical longitudinal section, taken substantially on the line 5-5 oi:

Figure 2 Figured isa view intransverse section, taken The rear "or inner end wall I 511818 formed: therein a transverse slot or opening it. The forward orouter end wall 14 of the handle ID has formed 4; Claims. (Cl. 30--162)' therein a comparatively'large opening t1. tit-onsend; the removableplate l2 of the handle l-ll terminates in a rightangularlyextending flange 18 having fixedthereon a bar orrib 19 which is engageable in andoccupiesa portion ofthe opera ing 11:. At its other end the removable: wall or plate 1 2 terminates inaresiiient flange 20 which is frictionally engaged with: the end wall is-for securing" thisend oi the-plate l'ttothe handle it,

Mounted Iongitudinallyin the-upper portion of the: handle it is. an inverted; substantially shaped guide zl. countersunk screws}: firmly secure the guide 2| in position. The screws '22 are threaded in spacers12'3 which are fixed suitable manner in the upper portionof thehandle 10. Thus; a-space or chamber '24 isiproevided'in: the upperpor-tion of" the" handle Ill.

Mounted for longitudinal sliding movement the guide! t a blade '25 which maybe of any suitable type. Fixed on the tear or inner end portion oi the blade za isadependi ngxaperturedcar 25. The base or attachingportion 21 oi theear 26 travels between the longitudinal edges of the substantially c-shapedi guide It. Thee'ai 26 travels on alongitudinal rod 28 in the lower portionv oi the handlev 1'0, the end portions of which are mounted in openings provided there--- for. in the end walls l4 and ii: of said handle. The aperture the 25: accommodates therod 28; The flanges 1 l8" and; 20 of theiplate IZ- secure therod 28 against longitudinal movement A coil spring 29- is mounted on the: rear or inner end portion or the: rod- 28 tor engagement the: earls for projecting the-blade 25 As shown to advantage in Figurofi'of the draw ing, thecar 26" is substantially T-sha'ped and slidably' mounted thereon is ablade retracting bar 30. Thebar 30 has formed therein'a longi-- tudinalslot 3! which accommodates the car 26:

The retracting bar 30' extends slidably through the slot l-G inthe rear. end wall i15- oi the; handle 0 o p vide a rippin portion; as at 32-, which is always exposed. At its forward end, thebar .30 terminates in a 'rigl'lt angularly extendingapertured flange 33 which is slidable on the rod 28- and which: is engageable the car 26' for retracting theblade 25 An inwardly or rearwardly turned resilient lip 34-011- the lower portion of the forward end waif ill of the handle I0 is engageable with theear 26 for releasably securing theblade 25 in projected or operative position. On its forward-end portion, theretracting bar 30 further includes depending side cams orflanges 35. Secured as at 36 on the removable plate l2 oi the handle I0 is athe guide 2 I. At its rear or inner end, thelatch 39 terminates in anupstanding lifting handle 4| which is operablefin a'slot or opening 42 provided therefor in the top H of the handle. Fixed on the free end portion of thelatch 39 is a dependingpin 43 which is operable through an opening provided therefor in the guide 2| and engageable in anaperture 44 in the rear or inner end portion of the blade for releasably securing said blade in retracted position.

Mounted longitudinally on the forward portion of the guide 2| is what may be considered a resilient shield orguard 45 for theblade 25. Theguard 45 terminates in a right angularly extendingforward end portion 46 which rides on the upper side of theblade 25.

It is thought that the operation of the knife will be readily apparent from a consideration of the foregoing. Briefly, thelatch 39 looks theblade 25 in retracted position, thepin 43 engaging in theaperture 44 in the manner shown to advantage in Figure 50f the drawing. With the blade in closed or retracted position, it will be observed that thespring 29 is compressedbetween theear,

26 and the inner endwall i5, ofv the handle ill. The substantially T-shapedresilient finger 37 is engaged with the cams for retaining, the retractingbar 30 in forward position inthe handle Ill. To release the blade, thelatch 39 is lifted through the medium of thehandle 4| for disengaging thepin 43 from theaperture 44, thus permitting thecoil spring 29 to hurl the blade forwardly in theguide 2! to projected position. As hereinbefore stated, the blade is retained in pro.- jectedposition by the resilient lip orelement 34 engaged with theear 26, To retract the blade, thebar 30 is pulled rearwardly, theflange 33 on the forwardend thereof engaging theear 26 on the blade, the resilientv flngertl riding. over thecams 35.

As theblade 25 tion, thespring 29 is againcompressed by theear 26, after which thepin 43, engages in theaperture 44 for again locking said blade. Theflange 46 of the guard ABrideso-nthe upper side of the blade and is shapedto accommodate the pointed forward end portion; thereof. It will be. observed, however,- that the .blade25 is not retracted quite farenough to permit the flange of the resilient invention will be readily understood and although,

a preferred embodiment of the device is as illustrated and described, it isto be understood that changes in the details of construction and in the combination and arrangement of parts may be, resorted to which will fall within the scope of the invention as claimed.

approaches its retracted posi- Having described the invention, what is claimed as new is:

1. A knife comprising a hollow elongated handle, a guide mounted longitudinally in said handle, a blade slidable in the guide and adapted to be projected from one end of the handle, resilient means in the handle for projecting the blade, manually operable means for retracting the blade, and means for releasably locking said blade in retracted position, said retracting means comprising a bar slidably mounted in the handle and projecting from the other end thereof, and means operatively connecting the blade to said bar for actuation thereby toward retracted position.

2. A knife comprising a hollow elongated handle, a guide mounted longitudinally in said handle, a blade slidable in the guide and adapted to be projected from one end of the handle, resilient means in the handle for projecting the blade, manually operable means for retracting the blade, and means for releasably locking said blade in retracted position, the last-named means including a resilient latch mounted on the guide.

a handle on the latch projecting from the firstmounted in the guide and operable in one of the openings to projected position, a longitudinal rod in the handle, an ear on the blade slidable on said rod, a coil spring mounted on the rod and engaged with the ear for actuating the blade to projected position, a manually actuated bar slidable in the handle and operable in the other opening and operatively connected to the blade for retracting A same, and means for releasably securing the blade in retracted position against the tension of the spring.

4. A knife comprising an elongated hollow handle including end walls having openings therein, a substantially C-shaped guide mounted longitudinally in the handle, a blade slidably" mounted in the guide and operable in one of the openings to projected position, a longitudinal rod in the handle, an ear on the blade slidable on said rod, a coil spring mounted on the rod and engaged with theear for actuating the blade to projected position, a manually actuated bar slidable in the handle and operable in the other opening and operatively connected to the blade for retracting same, and means for releasably securing the blade in retracted position against the tension of REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Name Number Date 845,792 Jenkins Mar. 5, 1907

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