US3276126A

US3276126A - Scriber

Info

Publication number: US3276126A
Application number: US501224A
Authority: US
Inventors: Carl R Sellen; William A Neithardt; William J Drexler; Collura Francesco
Original assignee: Keuffel and Esser Co
Current assignee: Keuffel and Esser Co
Priority date: 1965-10-22
Filing date: 1965-10-22
Publication date: 1966-10-04
Anticipated expiration: 1983-10-04
Also published as: BE688081A; SE338173B; AT284663B; DE1486931A1; NL6614314A; FR1496419A; NL145499B; GB1135468A; BR6683665D0; CH458123A

Description

Oct. 4, 1966 c. R. SELLEN ETAL 3,276,125

SCRIBER Filed Oct. 22, 1965 2 Sheets-Sheet 1 42 55 I2 f t FIG. 7

INVENTORS CARL R. SELLEN WILLIAM A. NEITHARDT BY WILLIAM J. DREXLER FRANCESCO COLLURA Maw COLLURA C. R. SELLEN ETAL Oct. 4, 1966 SCRIBER Filed Oct. 22, 1965 2 Sheets-Sheet 2 CARL R. SELLEN WILLIAM A. NEITHARDT WILLIAM J. DREXLER FRANCESCO United States Patent SCRIBER Carl R. Sellen, Paramus, William A. Neithardt, Secaucns, and William J. Drexler, Ridgefield, N.J., and Francesco Collura, New York, N.Y., assignors to Keulfel & Esser Company, Hoboken, NJ., a corporation of New Jersey Filed Oct. 22, 1965, Ser. No. 501,224 11 Claims. (Cl. 3323) The present invention relates to drawing instruments and more particularly to a drawing instrument for drawing or writing characters in accordance with a template to guide the scriber and is of the type shown in Keuffel Patent 2,011,195.

Heretofore, template guided scribers have been used and have been provided with clamp means to retain a writing emplernent such as a pencil or a pen in position, but the clamps have not been satisfactory as they do not securely retain the writing implement in position and also the clamps are hard to operate by the small screw head required to avoid visible obstruction of the work.

Also, there has not been a satisfactory means of supporting the scriber between periods of use and the draftsmen had to be careful to place the scriber on a suitable rest or on a piece of scrap paper. In either case, it was difiicult to avoid blotting of ink and a satisfactory solution had not been provided.

An object of the present invention is to provide a scriber which avoids the problems pointed out above.

Another object is to provide a clamp having a high mechanical advantage lever system to secure the writing implement in position.

Another object is to provide a manually operated strut or leg to raise the writing implement from the supporting surface while permitting manual release thereof for use.

Other and further objects will be apparent as the desciption proceeds and upon reference to the accompanying drawings wherein:

FIGURE 1 is a perspective of the scriber of the present invention;

FIGURE 2 is a plan view with parts broken away showing the parking lever with the leg or strut extending through the body of the scriber;

FIGURE 3 is an end view of the scriber showing the positions of the tail pin, the scribing point and the adjustable gauge pin;

FIGURE 4 is an elevation of the scriber as seen from the operators side and showing the parking lever in operative position;

FIGURE 5 is an end view as seen from the tail end of the scriber;

FIGURE 6 is an elevation with parts broken away of the scriber as seen from the side away from the operator and showing the parking lever in full lines;

FIGURE 7 is a section taken on line 77 of FIGURE 6 showing the mounting of the parking lever between the tail bar and the hollow knob providing the operating handle for the scriber;

FIGURE 8 is a plan view similar to FIGURE 2 with the knob completely removed and parts broken away to show the clamping lever in the groove on the writing implement side of the quadrilateral body plate; and

FIGURE '9 is an exploded view showing the quadrilateral main plate with the extension on which the writing implement is to be mounted and showing the two-part clamping lever with the parts separated and showing the parking lever with its retaining spring and also showing the tail bar to illustrate the details on an enlarged scale.

3,276,126 Patented Oct. 4, 1966 "ice Briefly, the present invention includes a lever system for releasably securing a writing implement on the scriber and such means includes a pair of levers pivotally mounted closely adjacent the opening for receiving the writing implement with a spring to urge the levers in a direction to press the levers into tight contact with the writing implement while providing for ready releasability with the draftsman retaining the scriber in the usual drafting position.

A parking lever having a finger engaging handle at one end and an arcuate-shaped leg on the other end is pivotally mounted adjacent the handle end so the leg passes beyond the plane defined by the points of the writing implement, the tail pin and the template guided stylus whereby the writing implement is held out of contact with the paper when the leg is projected and suitable means are provided to retain the parking lever in its operative and its inoperative positions.

The invention also includes a novel structure of a scriber chassis which includes a generally trapezoidalshaped plate with an extension on one side extending away from the short face to provide for supporting the writing implement while the tail pin is mounted on a vertically extending plate-like bar which serves as the mounting member for the parking lever while the template guided stylus is mounted for adjustment about a pivot point to vary the angularity of the characters being drawn by the writing implement. A handle is provided to cover the major portion of the parking lever and shaped to facilitate manipulation of the scriber, including the clamping levers and the parking levers.

Referring more specifically to the drawings, the scriber comprises a chassis having a generally quadrilateral plate 10 having substantially equal angles between a short edge with an extension 11 along one of the sides extending away from the short edge with said extension being provided with a writing implement receiving aperture 12 for accommodating a writing implement such as a tubular reservoir pen 13. A relatively flat tail bar 14 substantially bisects the angles formed by the sides adjacent the short edge and is mounted substantially perpendicular to the plate 10 by means of mounting screws 15 freely received in

counterbored apertures

16, 16 in the base plate 10 and threadedly received in threaded

bores

17, 17 formed in the front notched portion of the tail bar 14 thereby providing a rigid chassis.

A tail pin 18 includes a threaded stud 19 having a hexagonal head 20 which is screw threaded into an enlargement 21 at the rear of the tail bar 14 so the pin 18 may be guided in the longitudinal groove of a t mplate. A character tracing stylus 22 is mounted on an arcuately adjustable arm 23 pivoted on a pin 24 and clamped in adjusted position by a knurled nut 25 cooperating with a threaded bolt 26 in the usual manner to retain the stylus 22 in the desired position relative to the writing implement 13 and the tail pin 18 to obtain the desired effect.

The one side of the .plate 10 and the extension 11 are provided with a lever receiving groove 27 which receives the

webs

28, 28A of the clamping levers which also have upwardly and downwardly extending flanges 29 and 29A, respectively, and such clamping levers are pivotally mounted in the groove 27 by a tight-fitting pin 30 passing through aligned pin receiving openings 31, 31A and 313 in the levers and in the extension 11, and the tail ends of such levers are urged outwardly from the plate by means of a compression spring 32 loosely received in an aperture 33 whereby the tail ends of the levers are urged outwardly and the ends of the levers forwardly of the pivot pin are urged inwardly so that

notches

34, 34A in the levers embrace and contact the cylindrical portion of the writing implement 13 to effectively retain the writing implement in position. It will be noted that the materials of the levers are resilient and that each lever effectively contacts the writing implement, since the compression spring 32 is sutficiently strong to partially bend the levers within their elastic limit to produce the resilient individual gripping action of the levers against the writing implement thereby elfectiuely retaining the writing implement in position while permitting release of the writing implement by movement of the tail ends of the levers toward the plate 10. A parking lever 35 having an arcuate leg 36 at one end, an angular handle 37 at the other end with the connecting portions including a base section 38 and an angularly extending section 39 is pivotally mounted by means of a pin 40 passing through an aperture 41 adjacent the handle 37 and extending into a pin receiving aperture 41 in the tail bar 14 whereby the leg 36 passes through the parking leg receiving aperture 42 in the plate 10 whereby the foot of the parking leg 36 extends beyond the plane defined by the points of the Writing implement 13, the tail pin 18 and the tracing scriber 22 for supporting the scriber with the writing implement out of contact with the drawing with the lever shown in parking position in FIGURES 4 and 6 with the dotted outline of FIGURE 6 showing the inoperative position of the parking lever when the 'scriber is used in drawing characters.

To support the parking lever in its projected position as well as in its inoperative position, a Z-shaped spring, including a mounting bar 43, a stem 44 and a rubbing bar 45 is mounted by its bar 43 on the reduced forward projecting end of the tail bar by means of a screw 46 passing through an aperture in the bar 43 of the Z-shaperd spring and threaded into a threaded aperture 47 with the stem 44 extending over the reduced end of the bar 14 and projecting beyond so that the stem 44 engages the upper edge of the lever section 39 when the parking lever is in its operative position while the bar 45 of the Z-shaped spring engages the side of the lever to frictionally retain the parking lever in its raised position thereby assuring a semi-positive action on the parking lever thereby avoiding any [danger of the leg 36 being withdrawn unitentionally.

Notohes

48, 48A are provided in the clamping levers to clear the parking leg 36 in all positions thereof. Threaded apertures 49 and 50 are provided to receive the threaded spacer screw 51 to obtain the desired spacing of the Writing nib of the writing implement, particularly when the writing implement is a pen, to avoid excessive force between the writing point and the paper and

suitable clearance openings

52, 52A and 53, 53A are provided in the webs of the clamping levers to provide the proper clearance for the spacer adjusting screw 51 regardless of which threaded aperture is used.

A handle or manipulating knob 54 is provided with a recess 55 in which the parking lever 35 operates and such opening 55 includes a rearwardly extending rectangular passage 56 of a width substantially equal to the thickness of the bar 14 and the parking lever, the walls of such passage 56 serving to retain the pin 40 and the lever 35 in operative position and effectively guiding the lever and reinforcing the lever to take the lateral thrust of the Z-

shaped spring

43, 44, 45 and the handle 37 of the lever extends nearwardly and can be manipulated by one of the fingers of the draftsman. The manipulating knob 54 is secured to the base plate 10 by means of screws passing through

apertures

57, 57A and 57B.

The center of gravity of the scriber lies within the triangle defined by the tail pin 18, the tracing stylus 22 and the writing implement which is adapted to be supported in the writing implement receiving recess 12.

The drawing engaging foot of the parking lever is adapted to project beyond the plane defined by the tips of the writing implement, the tracing stylus, and the tail pin and away from the body in an area adjacent the writing implement on the writing implement side of an imaginary line passing through the center of gravity of the scriber and the tail pin and on the writing implement side of the center of gravity of the scriber away from the tail pin thereby providing a three point support for the soriber in its inoperative position by means of the projected parking lever foot, the tracing stylus and the tail pin with the Writing implement out of contact with a supporting surface.

It will be apparent that changes may be made in the structure embodying the invention as defined by the valid scope of the claims.

What is claimed is:

1. A scriber for drawing template guided characters on a surface comprising a generally quadrilateral plate having substantially equal angles between a short edge and the adjacent sides with an extension along one side away from the short edge with an aperture in said extension providing a support for a writing implement and a spacing gauge, a tail bar substantially bisecting the angles of the sides adjacent the short edge and mounted substantially perpendicular on the upper surface of said plate, a tail in projecting downwardly from the free end of said tail bar for engaging a groove of a template, a stylus carrying arm pivotally mounted on said plate opposite said extension, means to adjustably fix the stylus carrying arm in a selected position to control the angularity of the characters being drawn, said plate being provided with a web-receiving groove on the said side of the plate and extension carrying the writing implement, a pair of clamping levers of angle section arranged with their webs in abutting relation received in said groove with their flanges outwardly, a pivot pin passing through said extension and communicating with said groove and through said webs providing for limited pivotal move ment of said clamping levers, spring means reacting between said clamping levers and said plate adjacent said short edge of said plate, each clamping lever having a notch cooperating with the aperture in said extension for receiving a writing implement therein whereby the force of said spring produces a magnified force on the notch portion of said clamping levers to securely and releasably retain the writing implement, said plate and said clamping levers being provided with registering openings for receiving the spacing gauge and a parking leg without being afiFected by said levers in the various positions of said levers in use, a parking lever pivotally mounted intermediate its ends on said tail bar adjacent the short edge of said plate and having a leg passing through the parking leg receiving opening of said plate and said clamping levers whereby in one position said parking leg projects beyond the plane defined by the points of the tail pin, the writing implement and the tracing stylus for effectively supporting said writing implement out of contact with a support such as a drawing, a Z-shaped spring mounted by one of its bars on the side of said tail bar opposite said parking lever and adapted to engage the upper surface of said lever to semi-positively retain said parking lever with the parking leg in operative position with the writing implement out of contact with the drawing and adapted to engage the side surface of said parking lever to frictionally retain said parking lever in retracted position, a hollow handle adapted to overlie the major portion of said quadrilateral plate and a substantial portion of said tail bar and having a surface cooperating with the tail bar to retain said parking lever in a definite radial plane abutting the surface of said tail bar adjacent the writing implement and the gauging element, means to secure said hollow handle in fixed position covering said parking lever and the pivotal connection of said stylus carrying arm whereby the parking lever projects outwardly of said handle towards said tail pin for operation by a finger of the user, said parking lever having a finger engaging angle formed integrally therewith extending upwardly from the tail end of said lever and outwardly therefrom.

2. A scribing device comprising a body having a tail pin for sliding in a groove of a template, a tracer pin for tracing an image to be copied, and a writing implement for producing the image, parking means including a foot operable to prevent the writing implement point from contacting a supporting surface and a handle for operation, said parking means being mounted on said body for movement of the foot through the plane defined by the operative points of said tail pin, tracing pin and writing implement, and yieldable means to retain said parking means including foot in positions where the foot is projected beyond the said plane defined by the tips of said tail pin, tracer pin and writing implement away from said body for engaging the supporting surface and cooperate with the tail pin and tracer pin to engage the supporting surface to keep the writing implement point a substantial distance from the supporting surface and prevent the writing implement point from contacting the supporting surface and where the foot is withdrawn near the body with respect to said plane by a single movement of the same finger engaging the handle of the parking means to permit the writing implement point to contact the supporting surface such as a drawing to mark the drawing.

3. The invention according to claim 2 in which the means having a foot is a lever pivoted intermediate its ends with one end being the foot and the other end being an operating handle.

4. The invention according to claim 3 in which the leg of said parking lever passes through said body.

5. A' scribing device comprising a body having a tail pin for sliding in a groove of a template, a tracer pin for tracing an image to be copied, and a writing implement for producing the image; means including a lever pivoted intermediate its ends with one end being a foot, said lever being mounted on said body for movement of the foot through the plane defined by the operative points of said tail pin, tracing pin and writing implement; and yieldable means to retain said lever including the foot in positions where the foot may be projected beyond the said plane defined by the tips of said tail pin, tracer pin and writing implement away from said body for engaging the supporting surface to keep the writing implement point from contacting the supporting surface and where the foot may be withdrawn near the body with respect to said plane.

6. A scriber having a body including a handle for manipulation by one hand of a draftsman, a tail pin for reception in a longitudinal groove of a template, a tracing stylus for engaging the character groove of the template to be reproduced, and a writing implement spaced from said tracing stylus and said tracing pin; said tail pin, said tracing stylus, and said writing implement being in a triangular arrangement; the center of gravity of the scriber lying within the triangle; a parking lever having a drawing engaging foot pivotally mounted on said scriber with a projected position of said lever locating said parking foot beyond the plane defined by the tips of said writing implement, the tracing stylus, and the tail pin and away from the body in an area adjacent the writing implement on the side of a line passing through the center of gravity of the scriber and the tail pin and on the side of the writing implement with respect to the center of gravity of the scriber away from the tail pin and spaced away from the writing implement; means operable by the said one hand of the draftsman manipulating the scriber to move said parking lever from its operative position in which the parking foot extends beyond said plane away from the body to a position in which the foot is above said plane adjacent said body whereby when the lever is in projected position the scriber may be placed anywhere on a drawing without danger of the writing implement contacting the drawing and the scriber can be made ready for use with only the said one hand of the draftsman.

7. A scriber having a, body including a handle for manipulation by one hand of a draftsman, a tail pin for reception in a groove of a template, a tracing stylus for engaging the character of the template to be reproduced, a writing implement spaced from said tracing stylus and said tracing pin, and a spacing screw closely adjacent said writing implement to positively control the position of the writing implement on a drawing; said tail pin, said tracing stylus, and said writing implement Ibeing in a triangular arrangement; the center of gravity of said scriber lying within the triangle; a parking means having a drawing engaging foot movably mounted on said scriber for retention in two positions with one position of said parking means locating said parking foot beyond the plane defined by the tips of the writing implement, the tracing stylus, the tail pin, and the spacing screw and away from the body and in an area adjacent the Writing implement on the side of a line passing through the center of gravity of the scriber and the tail pin and on the side of the writing implement with respect to the center of gravity of the scriber away from the tail pin and spaced away from said writing implement and said spacing screw; means operable by the said one hand of the draftsman manipulating the scriber to move said parking means from its operative position in which the parking foot extends beyond said plane away from said body to a position in which the parking foot is above said plane adjacent said body whereby when the parking means is in projected position the scriber may be placed anywhere on a drawing without danger of the writing implement contacting the drawing and whereby the scriber can be made ready for use With only the said one hand of the draftsman.

8. The invention according to claim 6 in which means are provided to yieldably retain the parking lever in projected and retracted positions.

9. The invention according to claim 6 with means to removably secure the writing implement to the scriber including a writing implement receiving extension having a writing implement receiving recess extending transversely to the plane defined by the tips of the tracing stylus, writing implement, and tail pin; lever means having a recess on one end for registry with the writing implement receiving recess of the extension; means to pivot the one end of the lever means on the extension on an axis closely adjacent said writing implement receiving recess; the other end of said lever means extending away from said pivot many times the distance between said pivot and said implement receiving recess whereby when the other end of the lever means receives a relatively small force such small force is multiplied to a great force engaging the Writing implement; means adjacent said other end of said lever means to exert a yielding force on said lever means in a direction to clamp said writing implement and in an amount which can be overcome by digital force of the said one hand of the draftsman grasping the handle of the scriber.

10. A scriber comprising a body having a handle, a character tracing stylus, a writing implement, and a tail pin; means to removably secure a writing implement to the scriber including a writing implement receiving extension having a writing implement receiving recess therein extending transversely to the plane defined by the tips of the tracing stylus, writing implement, and tail pin; lever means having a portion on one end for registry with the Writing implement receiving recess of the extension; means to pivot the one end of the lever means on the extension on an axis closely adjacent said writing implement receiving recess; the other end of said lever means extending away from said pivot many times the distance between said pivot and said implement receiving recess whereby when the other end of the lever means receive 7 8 a relatively small force such small force is multiplied to a References Cited by the Examiner great force engaging the Writing implement; means ad- UNITED STATES PATENTS jacent said other end of said lever means to exert a yieldin forc o said lever means in a direction to clamp 1629143 5/1927 Bungart 33-27 aid Writing implement and in an amount which can be 5 2050105 8 8/1936 Keufiel 33 23 overcome by digital force of the hand of a draftsman 2,809,432 10/1957 Waddle 3323 grasping the handle of the scriber. FOREIGN PATENTS 11. The invention according to claim 10 in Which the 12,949 1894 Great Britain lever means includes a pair of levers of angle section with their Webs in abutting relation and the scriber body 10 LEONARD FORMAN Primary E x a min er and extension is provided With an elongated slot receiving aid web H. N. HAROIAN, Assistant Exammer.

Claims

1. A SCRIBER FOR DRAWING TEMPLATE GUIDED CHARACTERS ON A SURFACE COMPRISING A GENERALLY QUADRILATERAL PLATE HAVING SUBSTANTIALLY EQUAL ANGLES BETWEEN A SHORT EDGE AND THE ADJACENT SIDES WITH AN EXTENSION ALONG ONE SIDE AWAY FROM THE SHORT EDGE WITH AN APERTURE IN SAID EXTENSION PROVIDING A SUPPORT FOR A WRITING IMPLEMENT AND A SPACING GAUGE, A TAIL BAR SUBSTANTIALLY BISECTING THE ANGLES OF THE SIDES ADJACENT THE SHORT EDGE AND MOUNTED SUBSTANTIALLY PERPENDICULAR ON THE UPPER SURFACE OF SAID PLATE, A TAIL PIN PROJECTING DOWNWARDLY FROM THE FREE END OF SAID TAIL BAR FOR ENGAGING A GROOVE OF A TEMPLATE, A STYLUS CARRYING AEM PIVOTALLY MOUNTED ON SAID PLATE OPPOSITE SAID EXTENSION, MEANS TO ADJUSTABLY FIX THE STYLUS CARRYING ARM IN A SELECTED POSITION TO CONTROL THE ANGULARITY OF THE CHARACTERS BEING DRAWN, SAID PLATE BEING PROVIDED WITH A WEB-RECEVING GROOVE ON THE SAID SIDE OF THE PLATE AND EXTENSION CARRYING THE WRITING IMPLEMENT A PAIR OF CLAMPING LEVERS OF ANGLE SECTION ARRANGED WITH THEIR WEBS IN ABUTTING RELATION RECEIVED IN SAID GROOVE WITH THEIR FLANGS OUTWARDLY, A PIVOT PIN PASSING THROUGH SAID EXTENSION AND COMMUNICATING WITH SAID GROOVE AND THROUGH SAID WEBS PROVIDING FOR LIMITED PIVOTAL MOVEMENT OF SAID CLAMPING LEVERS, SPRING MEANS REACTING BETWEEN SAID CLAMPING LEVERS AND SAID PLATE ADJACENT SAID SHORT EDGE OF SAID PLATE, EACH CLAMPING LEVER HAVING A NOTCH COOPERATING WITH THE APERTURE IN SAID SEXTENSION FOR RECEIVING A WRITING IMPLEMENT THEREIN WHEREBY THE FORCE OF SAID SPRING PRODUCES A MAGNIFIED FORCE ON THE NOTCH PORTION OF SAID CLAMPING LEVERS TO SECURELY AND RELEASABLY RETAIN THE WRITING IMPLEMENT, SAID PLATE AND SAID CLAMPING LEVERS BEING PROVIDED WITH REGISTERING OPENINGS FOR RECEIVING THE SPACING GAUGE AND A PARKING LEG WITHOUT BEING EFFECTED BY SAID LEVERS IN THE VARIOUS POSITIONS OF SAID LEVERS IN USE, A PARKING LEVER PIVOTALLY MOUNTED INTERMEDIATE ITS ENDS ON SAID TAIL BAR ADJACENT THE SHORT EDGE OF SAID PLATE AND HAVING A LEG PASSING THROUGH THE PARKING LEG RECEIVING OPENING OF SAID PLATE AND SAID CLAMPING LEVERS WHEREBY IN ONE POSITION SAID PARKING LEG PROJECTS BEYOND THE PLANE DEFINED BY THE POINTS OF THE TAIL PIN, THE WRITING IMPLEMENT AND THE TRACING STYLUS FOR EFFECTIVELY SUPPORTING SAID WRITING IMPLEMENT OUT OF CONTACT WITH A SUPPORT SUCH AS A DRAWING, A Z-SHAPED SPRING MOUNTED BY ONE OF ITS BARS ON THE SIDE OF SAID TAIL BAR OPPOSITE SAID PARKING LEVER AND ADAPTED TO ENGAGE THE UPPER SURFACE OF THE SAID LEVER TO SEMI-POSITIVELY RETAIN SAID PARKING LEVER WITH THE PARKING LEG IN OPERATIVE POSITION WITH THE WRITING IMPLEMENT OUT OF CONTACT WITH THE DRAWING AND ADAPTED TO ENGAGE THE SIDE SURFACE OF SAID PARKING LEVER TO FRICTIONALLY RETAIN SAID PARKING LEVER IN RETRACTED POSITION, A HOLLOW HANDLE ADAPTED TO OVERLIE THE MAJOR PORTION OF SAID QUADRILATERAL PLATE AN A SUBSTANTIAL PORTION OF SAID TAIL BAR AN HAVING A SURFACE COOPERATING WITH THE TAIL BAR TO RETAIN SAID PARKING LEVER IN A DEFINITE RADIAL PLANE ABUTTING THE SURFACE OF SAID TAIL BAR ADJACENT THE WRITING IMPLEMENT AND THE GAUGING ELEMENT, MEANS TO SECURE SAID HOLLOW HANDLE IN FIXED POSITION COVERING SAID PARKING LEVER AND THE PIVOTAL CONNECTION OF SAID STYLUS CARRYING ARM WHEREBY THE PARKING LEVER PROJECTS OUTWARDLY OF SAID HANDLE TOWARDS SAID TAIL PIN FOR OPERATION BY A FINGER OF THE USER, SAID PARKING LEVER HAVING A FINGER ENGAGING ANGLE FORMED INTEGRALLY THEREWITH EXTENDING UPWARDLY FROM THE TAIL END OF SAID LEVER AND OUTWARDLY THEREFROM.