US1764156A

US1764156A - Magazine pencil

Info

Publication number: US1764156A
Application number: US287729A
Authority: US
Inventors: David H Douglas
Original assignee: Individual
Current assignee: Individual
Priority date: 1928-06-23
Filing date: 1928-06-23
Publication date: 1930-06-17
Anticipated expiration: 1947-06-17

Description

June 17 1930. DOUGLAS V 1,764,156

MAGAZINE PENCIL Filed June 23, 1928 I Inventor 3 hifiou glas Q .3 2mm y Anamg Patented June 17, 1930 DAVID H. DOUGLAS, 01? CROPSEYVILLE, NEW'YORK MAGAZINE PENCIL Application filed. June 23,

My present invention pertains to maga-,

zine pencils, and contemplates the provision of amagazine pencil characterized by the capacity to carry a number of leads,, and by mechanism for effectively feeding each lead rectilinearly incident to the use thereof and for positioning a fresh lead for rectilinear movement thereof when the same becomes necessary during, the continuous general use of the pencil. I 1

Other objects and practical advantages of the invention will be fully understood from, the following description and claims when the same are read in connection with.v the drawings, accompanying and forming apart of this specification, in which:

Figure. '1 is a view of the pencil partly in elevation and partly in diametrical section constituting the best practical embodiment of my invention of which I am cognizant, the sectional portion being on the line 11 of Figure 2,

Figure 2 is a transverse section of the pencil, on the line 2-2 of Figure 1.

Figure 3 is an elevation of the internal body per se of the pencil, in which is contained its working elements and which is intended to fit snugly inside the case as shown. Figure 4: is a top view of Figure 3 with parts omitted;

Figure 5 is a lower end view of Figure 3.

Figure 6 isa top view of the upper detachable part of. the pencil in which is contained the device for controlling the manual operation of the pencil.

Similar numerals of reference designate corresponding parts in all of the views of the drawings. Among other elements, my

40. novel pencil comprises a cylindrical casing body 1, preferably of metal and detachably connected at its lower end, preferably through the medium of a screw thread, with a taper member 10 in which is a longitudinal bore 3. At its ends remote from the taper end 2 the casing body 1 is provided with a circumferential fastening member 1, the said member 4 being grooved and being provided with an upwardly flared portion 5. 59; The fastener member 4 is possessed of re- 1928; Serial No. 287,729.

siliency, in order that the cap- 6 may be sprung on and off theeasingbody 1 andthis without liability of the cap 6 being casually displaced during the ordinary use of the pencil.

Interiorly, the cap 6 is provided with a rib 7, Figure 1, annular in form, and having section. The said rib 7 constitutes a fastener cap on the casing body 1 is adapted to spring past the portion 5 and seat in the fastening member 4, so that the cap is detachably though securely fastened to the casing body 1 in such a manner as not to interfere with the turning of the cap about its axis. The cap 6 is also provided interiorly with a portion 8, movable with the cap and having a disc like lower end 9 provided at 10, with an annular gear, (Figures 1 and 6).

The'said gear is: adapted when rotated, to serve as a driving means, as hereinafter described. v Arranged as illustrated within the casing body 1 is the internal body 18, which contains the working parts ofthe pencil and to which is attached a pin sprocket wheel 12, as shown, also an idler wheel 16. Trained around these wheels is. a perforated belt made of any suitable material, said belt being designated by 13, and being equipped with equi-distant lugs 14, on which are driv ing and guiding balls 15. These balls are arranged to operate a cylinder 17 Figures 1 and 2, which in turn, is connected to the internal body 18 by

screws

19 and 20 and

plates

19 and 20* in sucha manner that the screws will constitute journals for the said cylinder 17 The plate 19 which forms part of the internal body 18 has a slot 22 in its upper portion and also has a portion which extends downwardly from said upper portion and then horizontally to the opposite side of the casing body 1. At 21 is a filling cover above said lower horizontal portion of the plate. 19*, so arranged that it will protect and retain the leads contained in the. cylinder 17, and it will be noted that on a slight turn of the said'cover 21, the openings therein shown will become co-incian acting surface of convex. form in vertical the distance'between adjoining lead chambers of the cylinder 13'is not greater than approximately one-half the diameter of the dent with the lead chambers in the cylinder 17, thereby allowing the filling of all of the lead chambers with the exception of four which are not exposed by the cover 21, and Which are necessarily empty'for the proper operation of the pencil.

The cover 21 is not necessaryv for the operation of a pencil but is simply to shield the parts and to help make the pencil fool proof. The openings in the cover 21 are off center from the openings 1n the cylinder l( and the necessarily corresponding openings cil required refilling. However it ent1ielf'y1g l i e1the other ball proper and possible that any empty lead chambers may be filledat any time through the proper openings and therefore makes it possible'to have all tubes filledfbut theone up which the'rising ball 15, is traveling.

The arms 14 are not intended to pass through the slot'22 but pass'unde'r the plate in which theslot is formed. There is suflicient room for said arms to run clear of the internal body 18 as will'be seen from the transmit the necessary movement by means of the meshed teeth 10 and 11 to the opera ing parts of the pencil.

The parts are so relatively arranged that driving ball 15 and the position of the idler wheel 16 with-respect to the pencil bore 3 is such that the opening of the pencil bore 3 in the upper face of thelower part or taper 2 is at a distance below the center line of wheel 16, equal to one-half of the diameter ofthe ball 15. v ,7 r

The operation of the pencil is as follows:

By rotating the cap 6, the gear 9, engaging the pins 11 on the socket wheel '12, the upper part of whichprotrudes through the opening 22, will cause the wheel 12 to turn and move the belt13, to which is attached the arms 14 which carry the balls 15. Theballs 15 will enter and move downwardly in one of the lead chambers which is in coincidence with the bore 3, pushing the lead ahead of it, and

, out through the said bore 3 to Writing position. When the ball has reached a position so that its center is on the center line of the pulley 16 it will have entirelydisplaced the lead from the lead chamber and will then To permit of the turning of the cylinder: 17 and the protruding of the ball 15 from the lead chamber, a runway 23 is provided in the, taper portion 2,,Figure 1. The said runway also acts as means whereby the upperportion of the pencil, bore 3 may be cleared so as to form a guide for the-new incoming lead. As the ball'15 never leaves alea d chamber from the time it enters said chamber on its. downward stroke until it arrives at a point of equal elevation, it

serves as a locking device to hold the cylinder17 in rigid position at all times, while the lead is being moved rectilinearly from a lead chamber of the cylinder and also I is leaving the cylin der on. enter a loade chamber of'the cylinder. The ghambers of the cylinde'1r17 are designated respective lead chamber prior to the time whenron'e of the balls .15 starts to revolve the cylinder 17 about its axis to the required position. I v l It will be readily gathered from the foregoing that notwithstanding the capacity of my novel pencil andthe great length of lead that may beiused, the pencil is simple andinexpensive in construction, is adapted to be used withrfacility and is generally capable of withstanding the usage to which magazine pencils are ordinarily subjected.

I have entered into a of the construction and operative arrangement of the parts embraced in the present and preferred embodiment of my invention, in order toimpart a full, clear and exact understanding of the said embodiment. I do not desire, however, to be understood as confining myself to the constructionand arrangement of parts as disclosed, my inven tion being defined by'my appended claims within the scope of which structural changes. and changes in arrangement may be made Without departure from my invention.

I claim:

1. In a pencil, a magazine, including a detailed description ward stroke and is about to It Will be noted that my improvement 9.5"

provides fora lead completely leaving its I traverse of one stretch of the belt being adapted to turn the magazine for the presentation of a fresh lead to the pencil discharge, and also being arranged at the completion of the traverse of the other stretch of the belt followed by a movement about the other gear to enter a fresh chamber of the magazine.

2. A pencil having a plurality of magazine chambers for holding leads movable about a center, and endless propelling means for moving leads in said chambers and for turning the. magazine.

. 3. A pencil having a plurality of magazine chambers for holding leads movable about a center, and endless propelling means for moving leads in said chambers and for turning the magazine, in combination with means for moving said propelling means, and means forming a part of the pencil for actuating the last named means.

at. A pencil having a plurality of magazine chambers for holding leads movable about a center, an endless propelling means for moving leads in said. chambers and for turning the magazine, in combination with means for moving the propelling means, a

casing body, and a cap turnable relative to the casing body arranged to transmitiiiotion to the means for moving the propelling means.

5. In a pencil, a magazine comprising a plurality of chambers movable about a center, and propelling means arranged along side said magazine and including a belt and followers on said belt and lower and upper wheels about which the belt is passed, each follower at the completion of the traverse of one stretch of the belt being adapted to pass the magazine for the presentation of the fresh lead to the pencil discharge, and being also arranged at the completion of the traverse of the other stretch of the belt followed by a movement about the other wheel to enter another chamber of the magazine, in combination with a casing body, a taper member connected to said body and having a bore for the passage of leads, and a cap turnably and detachably connected with the casing body and equipped with means for cooperating with one of said wheels for moving the belt by turning of the cap.

6. A pencil having a taper member with a longitudinal central bore, a casing body connected to said member and having a fastener member at its end remote from the taper member, a rotary cap having a fastener member detachably engaged with the first named fastener member, a magazine comprising a plurality of lead holding chambers movable about its center, said chambers being open at their opposite ends, a belt mounted on wheels in the casing body and arranged along side of the magazine,

followers carried by the said belt and adapted to move leads rectilinearly in the magazine and to turn the magazine about its center, and means 'fixed with respect to the adjacent wheel and engaging with the cap whereby turning of the cap will be attended by movement of the followers.

7. A pencil having a taper member with a longitudinal central bore, a casing body connected to said taper member and having a fastener member at its end remote from the taper member, a rotary cap detachably' engaged with said fastener member, a magazine comprising a plurality of lead holding chambers movable about the center, said chambers open at their opposite ends, a belt mounted on wheels in the casing body and arranged alongside of the magazine, followers carried by said belts and adapted to move leads rectilinearly in the magazine and to turn the magazine about its center, means fixed with respect to the adjacent wheel and engaging the cap whereby turning of the cap will be attended by movement of the followers, and apertured turnable means adapted to rest in opposed relation to the ends of the lead-"holding chambers of the "magazine.

DAVID H. DOUGLAS.