US2198111A - Fur knife - Google Patents

Description

April 23, 1940.

D. L. GQRBATENKO Er AL 2,198,111

FUR KNIFE Filed Nov. l, 1938 'fl/[genes:

1N VEN TORS. D/M/ m/ L. Goes/4 rE/v/o LLGOE WER BY QM 772 9251?@ ATTORN Y Patented Apr. 23, 1940 Dimitri L. 'Gorbatenko and Albert J.,Allgoewer, San Francisco, Calif., assigner-s .to Dimgor Corp., San Francisco, Calif., a cor-poration of California Application November 1, `193s, serial No. 238,182 v.

s claims. (o1.v 311-162) This invention relates to knives and particu.- larly knives such asr are used in the furriers art in the cutting and trimming of pelts.

It is an object-of this invention to provide a furriers knife which will facilitate the cutting and preparation of furs; to provide a knife which is extremely compact and relatively inexpensive to manufacture; to provide a furriers knife which has, in combination, facilities for preliminary marking of the `pelts in preparation for cuttingof the same, and which includes the desirable factorsof safety.

AThese and.. other objects will become more apparent 4as this specification proceeds and the novelty thereof' will be particularly pointed out in the appended claims.

The `objects hereinbefore referred to are achieved through the provision of a knife having a thin handle portion, shaped to fit the hand, and into which the blade is retractable when not 'in use as a safety precaution. Additionally, provision is made for the marking of the pelts by providing 'an extremely thin edge at one portion of the handle memberto be used in marking by iin-pression. andby the provision of a pivotal Vretainer means in one end of the knife for a marking medium such as, for example, chalk.

'. In the drawing forming. a part hereof:

Figure l is a perspective View of the knife forming the subject matter hereof, with the blade'thereof in projected position.

Figure 2 is a' longitudinal section of the knife shown in Figure 1, .n

Figure 3 is a cross-section taken along theline 3 3 of `Figure 2,

Figure 4 is a cross-section taken along the line 4 4 of Figure 2,

Figure 5 is a longitudinal section of the knife, similar to Figure 2, but showing the blade in its retracted position and the pivotal chalk retainer member swung outwardly,

Figure 6 is a sectional plan view taken along the line 6-6 of Figure 2,

Figure 7 is a perspective View of the blade carrier, and

Figure 8 is a perspective view of the preferred form of blade.

The numeral I0 designates a relatively thin knife handle having a relatively deep end portion Il which tapers away to a narrower end portion l2, the purpose of this being to provide a handle which is readily adaptable to the grip. The handle member I0 has a longitudinally extending recess I3 therein in which a blade carrier I4 is slidably received. The recess I3, it will be noted,

l. is open at one end furriers g ef the handle member lq and is reduced to form. a bore at itsopposite end, as at I5, to yreceive pin `It on blade carrier Iii.y The depth o-f the recess I3 is such thatit will conceal a blade I8 when the carrier member I4 is drawn i rearwardly to substantially the end of the enlarged portionof the recess I3.

f It will be noted from Figures 2,5 and 6 that a helical spring member is disposed in the reduced portion of recess I3 and surrounds the pin It 'of blade `carrier I4, and normally urgesk blade vcarrier I4 into its outermost position (see Fig.v 2) -fprojecting the blade I8.

The blade carrier isnotched-as at 22 at its outer end (see Figurel'l) and is adapted to be,-

,engaged lby the toe 2l of the latch y23 and` thereby klocked in its innermost position (see Figure 5).

Latch 23 is disposed in anaperture 24 in top of handle Vmember I0, being Iattached for pivotal movement therein, and has athumb piece 25 projecting out of the handle and avtoe 21 engaging thenotch 22 in blade carrier I4. Aflat spring 26 disposed in the handle member above the recess I3 bears against and normally urges the toe 2l of latch`23 downwardly for engagement with v thenotch 22 ofthe blade carrier I4 when the latter is in its' innermost position (see Figure 5).

To limitthe outward movement of carrierA I4 andiacilitate the retraction ofthe blade IB and its carrier I4 into the handle ID, we provide a longitudinally extendingslot 30 in the side of the handle member I0 through which projects the shank of the thumb screw 3l for engagement f' with carrier I4. vIt will be understood that whilespring 20 causes blade I8 to be projectedupon release oflatch 25, the blade and its carrier must be manually retracted into the recess I3 bythumb screw 3|.

The particular construction of the blade carrier lli is illustrated tobest advantage in Figure 'I of the drawing. Aplate 32 of rigid material such as metal or the like, has a relatively thicker butt`end 33 to which pin I6 is attached. Thebutt end 33 of carrier I4 has two shoulder portions cut therein in the reduction of its size to the thickness ofplate 32, the first of which is for the purpose of providing the surface for the attachment of theopposite plate 34 as by the conventional rivets; the other shoulder portion defining a longitudinal blade receiving slot between theplates 32 and 34. y

Additionally, it will be noted thatplate 32 has apin 36 secured thereto and projecting4 at right angles through the aperture 3l inplate member 34, which pin serves to engage the blade I8 as .,10 accurately done.

In assembling the knife the carrier ls is s't inserted in recess I3, pin I6 of the carrier being centered in the helical springgllin recess I5.v The carrier is manually held in this position andthelegs 38 and 39 of bladet lareinserted in theslot 35 in the carrier I4, straddlingpin 36. Thumb screw 3l is theninsertedthrough slot 30 in the handle I0 and screwed into plate 32 (see Figures 2, 4 and 6). Asthumb screw 3| is tightened it V.causes plates 32d` and3,4htok be drawn together for kthe desired clamping ofthelegs 38 and 39 of the blade I8, thus preventing lateral or Vertical play .ofV the blade `during normaluse.

, As 'willbe noted from Figs. 1, 2 and 5, the

vdeeper portion II of the handle I 0 is tapered at its forward end intona lip,46 projecting under lthe bottom edgeof the blade I8.' The bottom edgeof blade I8 is received by a slot 4I in the saidlip 40 andthe bottomof the recess I3. T he purpose of. thisparticular lconstruction is to provide a thumb rest in close proximity to a cutting edge of blade I8 which is desirable in certain vcutting operations.` Accordingly, all danger of Vthe pelts being caught between blade and handle .are obviated. It will also be noted that the forward end of the top of the handle, between ,thumb piece 25 oflatch 23 and the top cutting edge of blade I8,-is streamlined as at 42,to prevent any `catching of the furs: in the cutting operation.

`As heretofore explained," the' furriers knife forming the subject matter tof [this invention is Qprovided with a pivotal retainer for a marking medium, ,such as chalk. ."The rear end of the `handle I Il' slotted as at 44 (see Figs. 5 and 6) to ,receive theretainer 45 pivotally attached'therein as at 46, and having a marking medium,`such as,achalk 41, clamped therein. The retainer 45 -is providedwith a projectingear 48 which extends lbeyond theslot 44 as a convenient means of swinging the same out Yof the handle for use of the marking medium while in that position or ,for the replacement of the chalk.

The knife is also provided with means for marking by impression as will be noted from the following: In cross-section (see Figs. 3 and 4) the handle member I0, at its deepest portion II, is blade shaped, the bottom edge thereof coming to substantially asharp edge 49. Under certain circumstances it is undesirable to make any mark 5 of a permanent nature on the pelts and for this reason use of the :edge 4 9 in marking ,by impression will be found highly desirable.A

From the foregoing it is believed clear that f we have provided a furriers knife which is highly l0 eicient for the purpose intended since it has all oithe necessary attributes such as are required byA onejskilled in; that particular art. While we have shown a preferred form of the invention, We wish it definitely understood that the principle of ll our invention may` take many other forms and. for that reason we desire protection according to the full scope of the appended claims.

The invention claimed is:

, l. A furrierfs knife comprisingva ,handle, a n longitudinal `recess therein extendingl rearwardly from the blade end,` abladecarrierslidablyre- 4ceived in sadkrecess,v ablade carried thereby,

yieldable means normally urging the carrier out of. the recess, a slot, in the handlejopening into u said recess, a thumb-screw in saidcarrier projecting through said slot, a knotch in the V4 blade carrier, and a trigger having a'toe normally and yieldably urged inwardly for engagement with the notch in said carrier.

' 2.' A furriers knife comprising,VA `a handle, [a longitudinal recess. therein extendingrearwardly from the blade end and terminating in a reduced bore at the opposite end, a blade carrier slidably received in said recess and having a' pin received u by said bore, a helical spring inthe bore encircling said pin and normally urging saidcarrier'out of the recess, a slot in the handle opening into said recess, a thumb pieoe'threadably engaging said Acarrier and' projecting through said slot, anotch 40 in said carrier, and "a" trigger having a' toe normally and yieldably urged inwardly' for engagenient with the notch in saidcarrier.

3. In a furriers knife, 'a handle having aA longitudinally extending recess therein, ablade ca`r- 45 rier slidablyl receivedv in said recess, 'a blade carried thereby, said blade carrier comprising'a rigid piece having a shoulder at'one end, a flexible .piece attached to said 'shoulder' and with s'aid rigid piece defining a blade receivingv slot,n and 50 ymeans for drawing the flexible' piecetowar'd the rigid piece.

DIMI'I'RI L; GORBA'FENKO. ALBER'I J. ALLGOEWER'.

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