US603183A

US603183A - Smith

Info

Publication number: US603183A
Authority: US
Publication date: 1898-04-26
Anticipated expiration: 1915-04-26

Description

(No Model.) 2 sheets sheet 1.

B. B. GOLDSMITH. MAGAZINE LEAD PENCIL.

No. 603,183. Patented Apr. 26, 1898;

ma annals PETERS cu, PHOYO-LITHQ, WASHINGTONY n. 1:v

(No Model.)

2, Sheets-Sheet 2. B. B. GOLDSMITH. MAGAZINE LEAD PENCIL.

No. 603,18'3." Patented Apr. 26,1898.

fivereian fiymizfl Goldsmith,

UNITED STATES PATENT FFICE.

BYRON BENJAMIN GOLDSMITH, OF NEW YORK, N. Y.

MAGAZINE LEAD-PENCIL,

SPECIFICATION forming part of Letters Fatent No. 603,183, dated April 26, 1898.

Application filed January 29, 1894. $erial No. 198,3497. (No model.)

"To all whom it may concern.-

tion positively projected in position for use and the worn or broken points are positively ejected and replaced by new point-s. It has been proposed to project the points into position for use and to expel them from the magazine by means of an'ejector entering the magazine, the said ejector or magazine, or

both, being moved' longitudinally for a lim-- ited distance sufficient to effect the discharge of one point and the projection of the next succeeding point into position for use.

The present invention relates more par 'ticularly to the means for actuating the ejector or magazine, or both, to project and discharge the points; and it consists, essentially,

of a screw feed mechanism acting alone for propelling the ejector or magazine longitudinally to eifect the feeding of the points or in conjunction with other actuating mechanism.

The range of movement of the screw feed:

mechanism may be nearly as long as the length of the pencil. Hence it is possible to so construct the pencil that by successive forward movements of the ejector all or nearly all of the points in the magazine may be successively projected into position for use and expelled. The pencil may also be constructed so that the ejector may have a limited reciprocating movement only sufficient to renew a single point at a forward stroke. The operation may be such that the screw feed mechanism will positively move either the ejector or magazine, or both, in both directions or in the forward direction only, a spring being used to return them to the first position as the screw feed mechanism is turned backward. All this will more fully appear from the following detail description with reference to the accompanying drawings, showing several embodiments of the inventiomand in which- Figure 1 is a longitudinal section of a pencil, showing the screw feed mechanism arranged to propel the ejector through a long range of travel in both directions. Fig. 2 is a similar section of a pencil having a fixed ejector and a movable magazine propelled for- .Wardly a limited distance by the screw feed mechanism and returned by a spring. Fig.

3 is a similar section of a pencil having a fixed magazine and a movable ejector. Fig. 4 is a longitudinal section of the front end of a pencil similar to that shown inlFig. 1, but with an ejector having a range of travel similar to that of the ejector shown in Fig. 3. Fig. 5 is a longitudinal section of the rear end of a pencil, similar to that shown in Fig. 2, in which the screw feed mechanism is arranged to actuate the movable member of the pencil positively in both directions. Fig. 6 is a longitudinal section, on the line x :r of Fig. 7, of a pencil similar to that shown in Fig. 3, but

having a reciprocating ejector-actuating mechanism in addition to the screw feed Imechanism. Fig. 7 is a cross-section on the line y y of Fig. 6; and Fig. 8 is a longitudinal section of a pencil similar to that shown in Fig. 6, but with both the ejector and magazine movable longitudinally.

Like numerals of reference indicate like parts throughout all the drawings.

Referring now more particularly to Fig. 1, there is shown a magazine-pencil with the cylindrical mantle 1, preferably of metal, having at the front end a nozzle 2, expanded to pass over the mantle, which is closed at the rear end by a cap 3. The nozzle 2 is shown in Fig. 1 as formed of'two pieces of metal,

which may be soldered together, and it is secured to the mouth by its rear edge 4, which is turned over an annular bead 5, formed on the mantle near its front end in such manner that it may be rotated on the said mantle, or the mantle may be rotated in the nozzlefor a purpose which will hereinafter appear.

Extending centrally through the pencil to or slightly beyond the front ed 'ge of the nozazine-tube and extends through the greater portion of its length, its front end terminating at or a little beyond the front end of the mantle and its rear end terminating a short distance in front of the thimble 7.

Over the magazine-tube is fitted so as to freely slide thereon the ejector, which consists ofashort metallic tube 9,having a springfinger 1O projecting through the slot 8 into the interior of the magazinetube, so as to engage the butt-end of one of a series of marking-points 11, contained in said tube. A wire helix 12 is soldered or otherwise secured to the inner surface of the mantle, and the same is engaged by a notch formed in a block 13, fast on the ejector, so that when either the nozzle 2 or mantle 1 is turned the helix 12 will act as a screw-feed to propel the ejector,whieh latter is prevented from turning by the finger 10 engaging the walls of the slot 8. The helix 12 extends from the thimble 7to the front end of the mantle. The forward movement of the ejector is limited by the front end of the slot 8, which is engaged by the finger 10 when the ejector is in its forward position, and the rearward movement of the ejector is limited by the thimble 7 or by a special stop, (not shown,) and when the ejector is in the rearmost position the finger 10 engages the rear wall of the slot and is lifted thereby from the magazine until out of the path of the marking-points; but the front end of the finger still remains within the slot,thercby preventing the ejector from being turned on the magazine when in this position.

The front end of the magazine tube is formed into spring-jaws 14:, which are so bent as to slightly reduce the bore of the magazine at this point; but they offer only sufficient resistance to the passage of a marking-point to prevent the same from dropping out of the tube by gravity. A short distance to the rear of these spring-jaws 1t are spring-tongues 15, extending into the magazine-tube for a purpose that will presently appear.

W'hen it is desired to fill the magazine with marking-points, the ejector is moved to its rearmost position, so as to draw the finger 10 out of the ma gazine-tnbe, after which the cap 3 is removed and marking-points are introduced into the rear end of the magazine-tube, point downward, while the pencil is held in a vertical or nearly-vertical position. The first point introduced falls until caught by the tongues 15, and the other points arrange themselves in a series behind this first point until the magazine is full. The nozzle 2 or mantle 1 is now turned, and the ejector is forced forward until the finger 1O enters the magazine-tube and engages the butt-end of a marking-point, and then a continued forward movement of the ejector will force the entire series of marking-points forwardly, spreading the tongues 15 as the points pass between them and ultimately projecting the first of the series of points through the spring-jaws 1t and into position for use, by which time the spring-tongues 15 will have snapped back of the second point of the series, thereby preventing the first point from being forced backward by the pressure of writing. The ejcctor,whieh has by this time been advanced a distance equal to the length of two markingpoints, may then be returned to its rearmost position,and more points may be dropped into the magazine until the latter is filled, when the cap may be put in place.

\Vhen the point in use has become worn or broken and it is desired to renew the same, the ejector is forced forward a distance sufficient to force the worn point out of the magazine and the next succeeding point into position for use, in which case the third of the original series of marking-points will have been advanced sufficient for the springtongues 15 to snap back of it. In like manner the ejector may be advanced from time to time to renew the points, until finally it has reached the forward limit of its travel. It may then be returned to the rearmost position in order that the magazine maybe again filled with marking-points, so that the pencil is again ready for successive use until the supply in the magazine is exhausted.

The ejector itself may be utilized to resist the back pressure of writing, being firmly held in any position by the screw feed mechanism, and in this case the spring-fingers 15 will be omitted.

Referring now more particularly to Fig. 2, the mantle 1 is shown as constructed of wood or other similar material, and the nozzle 2 is fixed immovably to it. To the rear end of the mantle is secured a tubular section 1', forming a continuation of the mantle and having on its interior a short helix 12, of wire, soldered or otherwise fixed thereto. The magazine-tube 6 in this instance is movable and slides in the ejector 9, which latter consists of a long tube of metal having a flange 9 at the rear end, abutting against the rear end of the mantle 1, and is there held by a helical spring 16, interposed between the said flange 9 and a washer 1'7, fixed on the magazine-tube within the mantle-section 1, the said magazine-tube being extended a distance beyond the rear end of the ejector. The expanded end 18 of a sleeve 19 is contained within the mantle-section 1, the rear end of which latter is reduced in diameter to prevent the expanded end of the sleeve 19 from passing through it. The magazine-tube (3 projects into the sleeve 19 to or nearly to its rear end, and the washer 17 abuts against the expanded portion 18 of the said sleeve 19. The expanded end 18 of the sleeve 19 has secured to it a block 13, engaged by the helix 12, so that when the sleeve 19 is turned in one direction it will be forced forward, compressing the spring 16 and carrying the magazine-tube forward, and when turned in the other direction it will he moved rearwardly and the magazine-tube will be returned to its first position by the spring. A cap 3 closes the outerfend'of the sleeve 19 and may be milled on the exterior to facilitate the turning of the sleeve, which latter when in its most forward position projects far enough outside the section 1 of the mantle to permit a ready manipulation of the same.

The forward end of the ejector is formed into two spring-fingers which enter slots 8,formed in the magazine-tube, near its front end, the said slots being of such length that when the magazine-tube is in its foremost position the rear edge of the slots will engage point, whereby the marking-point in position for use, which point is in advance of the point engaged by the fingers 10, is prevented from being forced'backward by the pressure of writing; butvit will be understood that the spring-tongues (shown in Fig. 1) may be used in this form of the pencil. V

The magazine-tubemay terminate at the front end of the nozzle, as in Fig. 1, or it may be extended a distance beyond the same and, exterior to the nozzle, have beads 22,

formed on the spring-jaws let in such manner that when the magazine-tube is in its retracted position the front end of the nozzle will ride upthe'be'ads and force the jaws toward each other, so they will tightly clamp the forward marking-point.

In the pencil shown in Fig. 2 the length of travel of the ejector is only sufficient to renew a single point at each complete stroke,

and it must always be returned to its rearmost position every time a point is to be ejected and a new point projected into position for use. In this formof the pencil the operating mechanism differs from that shown in Fig. 1 in the length of the stroke and in the ejector being moved rearwardly by a spring instead of by the positive action of the screw-feed. V

' In the construction shown in Fig. 3 the mantle 1 is similar to that shown in Fig. 1. The nozzle 2 terminates in a sleeve 2, which enters the mantle and is there held by solder,

beyond the end of the magazine-tube to or nearlyto the end of the sleeve 19, which latter is closed by the cap 3.

The screw feed mechanism in the construction shown in Fig. 3 operates in the same manner as that shown in Fig. 2, except that it moves the ejector-tube instead of the magazine-tube. In this structure the spring-fingers 10 are withdrawn from the magazine tube when the parts are in the retracted position, and consequently the magazine-tube is provided with the spring-tongues 15; but they may be omitted, in which case the ejector would be advanced until the fingers 10 engage a marking-point, when the pencil is in use.

is similar to that shown in Fig. 1, the ejector 9 has but a limited travel near the front end of the pencil, which travel is only sufficient to eject an old point and project a new one 'into position for use, and the ejector must be retracted and again moved forward whenever a point is to be renewed. The helix 12 need only be long enough to move the ejector the required distance, and the rearward movement of the ejector is limited by a back-stop 20, struck up from the magazine-tube.

In the construction shown in Fig. 5 the screw feed mechanism is similar to that shown in Fig. 2; but the inner end of the expanded portion 18 of the sleeve 19 is formed with a bead 23, the inner walls of which constitute a bearing for the edge of the washer 17, so that while the sleeve may be revolved around the washer it will move it, together with the magazine-tube, positively in both directions, and the spring 16 is therefore omitted. This construction is equally applicable to the form of pencil shown in Fig. 3, as will be readily understood.

In Figs. 6 and] the pencil shown is similar to that shown in Fig. 3, but with the construction so modified that the ejector may be given a reciprocating movementindependent of and in addition to the screw-feed, so, that either or both means of actuating the ejector to re new the points may be employed. The advantage of this construction is that after a point has been projected for use by the reciprocating movement of the ejector it may be adjusted forwardly for wear by the screwfeed. For this purpose there is introduced into the mantle-section 1 an auxiliary shell 24', provided with an exterior helical groove fitting the helix 12 and having its rear end contracted, so as to embrace the sleeve 19 back of its expanded end 18 and between the latter and the reduced rear end of the mantlesection 1'. Soldered or otherwise secured to the inner wall of the shell24. are two diametrically opposite longitudinal guides or.

In the construction shown in Fig. 4, which IOO spond to the pencil shown in Fig. 3, and consequently no further description thereof is here necessary. Vith this form of pencil the ejector may be simply pushed forward against the action of the spring 16 by pressing upon the cap 3 until a point is ejected and another is projected into position for use, and then when the pressure is removed the ejector will be returned to the first position by the spring or the sleeve 19 may be rotated, thereby rotating the shell 24, and thus forcing both the shell and sleeve forward and advancing the ejector against the action of the spring to renew a point, after which on turning the sleeve 19 backward the parts will be returned to the first position.

lVhen a point has been projected into position for use and it is desirable for any purpose to still farther advance the same without ejecting it, the screw-feed is operated until the desired projection is obtained, and since the point normally abutting against the spring-tongues 15 will thereby be moved away from them the back pressure of writing is then received and resisted by the ejector-fingers,which are made stout enough for this purpose.

In the construction shown in Fig. 1 the additional projection of the point is obtained by simply screwing the ejector forward the required distance; but in the forms shown in Figs. 3 and 6 the parts are first returned to the retracted position and then again moved forward to farther project the point.

In Fig. 8 the pencil shown corresponds to that shown in Fig. 6 except that the magazine-tube, as well as the ejector, is movable longitudinally and the front end of the magazine-tube is constructed the same as shown in Fig. 2. The movement of the magazinetube is only enough to carry the beads 22 on the jaws 14. away from the front of the nozzle 2, so that the front marking-point will be unclamped and may be readily forced out by the ejector. \Vithin the nozzle 2 the magazine-tube has a washer 27 fixed to it, so that in the normal or retracted position of the magazine this washer 27 is a short distance to the rear of a ledge 2, formed in the nozzle. The slot 21 in the ejector-tube is shorter than the length of the stroke of the same, so that when the ejector is pushed forward the rear end of the slot will engage the short tongue or stud 20 on the magazine-tube and the latter will be forced forward until the washer 27 engages the ledge 2 of the nozzle. When the ejector is retracted, the forward end of the slot will engage the stud before the back stroke is completed and the magazine-tube will be drawn backward until the front end of the nozzle engages the beads 22 on the jaws 1t and forces them toward each other to clamp the marking-point in position for use.

It will be readily understood that the screw feed mechanism in Fig. 2 may be replaced by the combined screw feed and reciprocating ejector mechanism shown in Fig. 6 and that the screw feed mechanism shown in Figs. 3 and 5 may replace that shown in Fig. 8.

It is also within the scope of the invention to form the enlarged end 18 of the sleeve 10 with a helical groove similar to the shell 24 to fit the helix 12, in which case the said end 18 would be made of the proper diameter for the purpose, and the wire helix 12 may be replaced by a helical rib formed in the mantle or mantle extension or in a separate sleeve secured therein.

Various other modifications will be apparent to any skilled mechanic, and therefore my invention is not confined to the exact details of construction set forth in the foregoing description and shown in the drawings.

Having now fully described my invention, I claim and desire to secure by Letters Patent 1. A lead-pencil comprising a mantle pro vided with a helical guide, a magazine carried by the mantle and adapted to receive a series of marking-points, and means actuated by the helix on the mantle for positively ejecting and renewing the points, substantially as described.

2. A lead-pencil provided with a magazine adapted to receive a series of marking-points, an ejector exterior to the magazine and provided with one or more spring-fingers entering the magazine, and a screw-feed for actuating the ejecting mechanism to positively expel and renew the points, substantially as described.

3. A lead-pencil comprising a mantle provided with a helical guide, a magazine adapted to receive a series of marking-points, and an ejector engaged by the helical guide on the mantle, whereby the ejector may be actuated to positively expel and renew the points, substantially as described.

4. A lead-pencil comprising a mantle provided with a helical guide, a magazine adapted to receive a series of marking-points and having spring-jaws at its forward end, and an ejector engaged by the helical guide on the mantle and actuated thereby to positively expel and renew the points, substantially as described.

5. A lead-pencil comprising a mantle with an interior helical guide, a magazine adapted to receive a series of marking-points, and an ejector traveling on the magazine, and e11- gaged by the helical guide, and having a stroke sufficient to expel and renew a number of points in succession, substantially as described.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

BYRON BENJAMIN GOLDSMITH. lVitnesses:

I. WEIL, CHAS. GRUNDLER.