US2327000A - Trimming board - Google Patents

Description

1943- F. M. LUND 2,327,000

TRIMMING BOARD Filed Dec. 1, 1941 2 Sheets-Sheet 1 INVENTOR.

MWMM Aug; 17, 1943. F. M. LUND 2,327,000

TRIMMING BOARD Y Filed Dec. 1, 1941 v /6 4! v r 419 28 I 2 @3 4/2 5 7 5 52 K 29 2/ 2 Sheets-Sheet 2 Patented Aug. 17, 1943 UNITED STATES PATENT OFFICE 2,327,000 J TRIMMING BOARD: I Frank M. unachiee'ge, 111., gag-at er fifty per cent to Harvey M. Pushker, Chicago, 111. Application member 1, 1941, serial No. 421,125

' 5 cl im (01. 1m n) cutting edge acted to shear sheet material projecting over the cutting edge. conventionally, this type of trimming board has been provided with cross lines on its upper surface dividing the board into squares, generally one-half inch each way, and, at the top of the board, a scale In the'drawings, Fig. 'l'is a plan; viewshowing'a preferred embodiment of a trimming board made in accordance with my invention;

Fig. 2 is an elevational -view.1o0king in the directionof the rear of the trimming board; 0

Fig 3 is an elevational view looking in the direction of'the front of the trimming board;

Fig. 4 is a sectional view taken along the line 44 oi Fig. 3 looking in the direction of the arrows; and. a I

Fig.,:-5.is'a sectional'view taken along the line 5-5' of Fig. 4 looking in the direction of the was provided showing the distance from the cutting edge in either'inches or metric figures. This type of trimming board has been identified almost entirely with photographic work and as a conse quence has 'often been referred to as a photographic paper trimmer. Its simplicity and utility have .been so well known that its markeddisadvantages manyinstances have not been given consideration. i I

As oneillustration, it is almost impossible to work in a dark room and expect toget any'degree of accuracy, since the paper must beheld carefully along the ruled lines in order to square it up for cutting. Even when it is employed outside of a dark room, it is practically impos sible to obtain adequate cuttin speed because lines ruled on the board. This is particularly true when an attempt is made to use the old trimof the time required to-true up the paper to the manner in which it is often used; in small photographic establishments. As an example,it may be desired to make enlargement prints of a sizenot standard, and the most advantageous way of accomplishingthis is to cut photographic print paper fromlargersheets into sheets of a size desired, and this must be done in a dark room, and the operation may. be repeated'timeaftertime. The black or brown ruled lines on the old, natural wood colored board, cannot be seen read-. ily in a dark room; if they can be seerrifaintly, it takes a great deal of time to arrange th paper on the board so that it will cut in the rectangular shape usually desired. I .3.

The disadvantages outlined above are illustrae tive and are suggestive of specific objects ofjthe invention and the functions and advantages secured by my invention, as brought out in. the, following specification. 4 f 1 arrows.

Referring now to th 'drawings, thetrimmin board. therein. illustrated comprises a rectangular base member. I'D, preferably formed of wood, havcutting edge l5 with which the knife or blade I6 is adapted to cooperate to produce a shearing action. A straight edge abutment I1 is secured to another edge of the base member ID in any suitable manner, as by screws l8, said abutment I'I projecting above th plane upper surface of the base member In to form an abutment against which an edge of thepaper may lie. The strip l3 carrying the cutting edge I4 and the straight edge abutment l! are at right angles to each other. The surface face of the base in is preferably provided with anebony finish and is (132-.

vided into one-half inch squares, dividing lines l9 being provided for such purpose. These dividing lines IS-may, for example, comprise printed or painted lines or, alternatively, they may comprise very narrow grooves cut into the face of the base membcr. II). In either'case, they are preferably-white so as to present a color in sharp contrast to that of the surface of the base memberl fl i Mounted along the rear of the base member H! is a'guidecarrying member or rod 2| which is preferably triangular or hexagonal in cross section. The guide carrying member or rod 2| is secured in any desired manner to the base In, as, for example-on upstanding posts, and, in the particular embodiment disclosed, it is'supported on vertically. disposed posts 23 connectedto the,

threaded bolt or stud 22. A guide member 26, formed of a metal strip, is secured at one end to a sliding or slidable member 21, the latter being shaped to provide upstanding ears 2B and 29 having alined apertures of a cross section correspond- 5 ing to that of the member 2| for receiving said member 2| and a rearwardly disposed portion or ear 3I threaded to receive a knurled set screw 32.

It will be seen, therefore, that the guidemember 26 is slidable o'nvthe member 2| and-"may be held-" in rigid position by engagement with" the set screw 32.

The guide member 26 may be clamped and held and maintained fiat on the surface of thema'semember I II in any suitable manner. In the particular embodiment shown, the end of 'theagufde member which extends over"th"edge"of 'th'e basemember I0 is provided-with an ap'ertune 333 through which a threaded bolt or stud 34 passes, the latter also passing through an aperture"3$20 of an L shaped member 31 which is attaohed 'to the guide member ZS- in-anysuihable way msvfor example by means of rivets orpins 38i- Byztixhte ening the knurled nut 39:omthe studvflfagamst the washer-4|, both the 'guide member 26 andetlie 5 lower side of 1 themember 3 31: are smovedntomd each other and tightly} gripthe edge of the base member I 0 to hold the guide member i26ragainst movement and fiatly -on-thersurface of esaid'base member I9." I

The member 21, when secured byitigirtemng of the set screw 32,"is;autematically2alined so that the guide member, 26 a is :positionedla't exactly: right angles to the abutment I! and paraller/to; the cutting edge-ISL Sincethe'member 21 isrself- 35 alining onthe memberfl anoperatormray' make: an adjustment of the .guide'nremberdflaismgiorrly one hand if his cther -hand'is oocupid.

The cutting knife: I 63 which =isspi'vooeditoutm base member I D, is'conventionat in character, bising provided :with *the-v usual shandle cuotinu blade which latter may-be Eremovably secureduto the knife shank. 'I'hese detafls form no pa'rt-zofi my present invention and: they are,*tl.=rerefore, not specifically illustratedinf'the drawings.- AsslmWn -i particularly in gures 1 an1d3"'of the-. drawings, fixed to the cutting knif'e' or'bladel 6 isa pinfior= spindle '42 which is mounted for rotatable and' slida-ble movement in. a bracket T43 securedtethe back of the base member' IIliaud str-iti-I I arr-am 50 desired manner for example; by s'crews ui A 'n'ut 16 is adjustable onawthreadd' e'n'd 'oi' thb pin '42 =Jto regulate the tension ofa syring on6 end of which is attached to tho nut-fl bye'ser'ew 48and the other end of which is attached-to the bearing member'AS bya screw' fli A loeking niit 52 serves to lock the nut negamsv'movemem." A relatively small round-headed bolt 53' iS Seciire'd in a fixed position on a'itail piece Blb'f the cutting blade; As the drawings-show;the portioir of the 0 bracket d3 within which the-pin nos pivoted is rounded but has a sl-i'ghtrecess 561"- y As describedin my-prior patent, -2j188985- issued January-2, 1940, the cuttin g-act'io'rr is as follows: The spring 41 tendsto move-the pirr42- to the right, when looking at Figure 3, and, ass-the cutting knife is-raised to-" a vertical posit-i611 the rounded head of bolt 3I moyesto the riglrt lilllizrr theentireassmbly and falls mm the recess} 56*as' a stop so that the-cuttingblad ca'n b'e left' in mupright position readyfor operation." As the blade is brought downwardlyi the -rounded head--' of bolt 53- rides out of the reeesd- -throwingthe entire-bladeassemblyslightly tward the lefw p looking at Fi'gl'ire =3, unease-base engages the straight edge where it is brought still further to the left by this engagement. The tension on the spring 4'! is adjusted to control the amount of friction and, therefore, to a certain extent, the cutting action between the blade and cutting edge I 5. If it should be desired, considerable tension may be placed on the spring 41 so that, if the cutting blade should be knocked down by accident, its movement will be arrested when it first engages the' cuttin'g edge iIiTand-it-will not fall allthe way down and possibly cause injury if the fingers or other part of the operators body should be in the way. It will be noted that the supporting strip II projects outwardly from the base member I0 a sufficient distance to act as a stopfor thecuttingblade.

Iristadofemploying the particular cutter constructiondescribed-hereinabove, I may utilize other constructions such as, for example, those described in United States Patents Nos. 1,123,191

The mannerof operating or utilizing any trim.- mingr-iboard willb'e apparent in the light 'of the description :which- I -;l :ave--given -hereinabove. It

will be -clearthat the present construction includes means for truing up,-with a minimum-of effort, photographic-material to: be trimmed, and also provides'ineans for preventing accidental dropping-:of the knife,- thereby preventing injury tothe r operator;

While=theformof my'invention herein shown 1. A-trimming-board of the .characterdescribed comprising: an rectangular base member having a, metal cutting edge alongvoneside thereof; a cutting f knife I pivotedto saidbase member" and adapted to cooperate with said metal cutting edge to-produoe a-shearing action, a rod mounted along one side of said base member at'-right -ang'les1tosaid cutting-.edge, aguide member slidably but substantially rigidly associated -with said rod 'to' maintain the guide memberin contactwith the basemember and arranged for sliding movement in adirection parallel thereto, and; means associated with said knife: for-opposing the downwardpivotal 4 movement thereof whereby acci-- dentalfalling of said knifeis avoided,

2. 1m a-trimming-board of the character described; a rectangula r base-member having. a.-

metal: cutting edgealong one side thereof, a cutting knife pivoted to said base member-and-arrangd to cooperate with said metal cutting; edge toproduce 'a-shearing-action-,:a rodmounted along one side of saidlbasemember at'right-angles to said cutting edge, a g uide -member having one endslidably'associated with said 'rod: and extending at right angles-thereto; said guide" member being; substantiallys rigidly; mounted: on said rod itomaintain -the' guide memberlin contact with the; base." member but being slidable axially thereof} andrclampingxmeans atthe other end of thejiguide #memben means "f or looking said guide member 'iIY pOsitibn.

3. A trimming board of the character described,

06111131181118 a rectangular 1 base-member having a meteieurcingedgewrong-mascaraithereer; mus ting knife pfflltd t6 Said" b8563 miimbr and adapted t6 cobrat wifihsaid metal cutting edge to produce a shearing action-,a d-odmounted along base member and arranged one side of saidvbase member at right angles to said cutting edge, a guide member slidably but substantially rigidly associated with said rod to maintain the guide member in contact with the for sliding movement in a direction parallel thereto, said guide member comprising a substantially flat strip attached to a sliding member, said sliding member being shaped to provide a plurality of upstanding ears having alined apertures through which the said rod passes and a rearwardly disposed ear having a threaded aperture, and a set screw threaded therein, said set screw being adapted to lock the sliding member against movement on the rod.

4; A trimming board of the character described, comprising a, rectangular base member having a metal cutting edge along one side thereof, a cutting knife pivoted to said base member and adapted to cooperate with said metal cutting edge to produce a shearing action, a rod mounted along one side of said base member at right angles to said cutting edge, a guide member slidably but substantially rigidly associated with said rod to maintain the guide member in contact with the base member and-arranged for sliding movement in a direction parallel thereto, said guide member comprising a. substantially flat strip attached to a sliding member, said sliding member being shaped to provide a plurality of upstanding ears having alined apertures through which the said rod passes and a rearwardly disposed ear having a threaded aperture, a set screw threaded therein, said set screw being adapted to lock the sliding member against movement on the rod, and means associated with said knife for opposing the downward pivotal movement thereof whereby accidental falling of said knife is avoided.

5. A trimming board of the character described, comprising a rectangular base member having a metal cutting edge along one side thereof, a cutting knife pivoted to said base member and adapted to cooperate with said metal cutting edge to produce a shearing action, a non-circular rod mounted along one side of said base member at right angles to said cutting edge, a guide member slidably but substantially rigidly associated with said rod to maintain the guide member in contact with the base member and arranged for sliding movement in a direction parallel thereto, said guide member comprising a substantially flat strip attached to a sliding member, said sliding member being shaped to provide two upstanding ears having alined non-circular apertures corresponding in cross-sectional shape to that of the rod and through which the said rod passes and a set screw threaded therein, said set screw being adapted to lock the sliding member a ainst movement on the rod.

FRANK M. LUND.

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