US516212A

US516212A - Electric perforating-pen

Info

Publication number: US516212A
Authority: US
Publication date: 1894-03-13
Anticipated expiration: 1911-03-13

Description

(No Model.)

A. D. LEWIS.

ELECTRIC PBRFORATING PEN.

No. 516,212. Patented Mar. 13, 1894.

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UNITED STATES PATENT OFFICE.

AARON D. LEXVIS, OF CANTON, MISSOURI.

ELECTRIC PERFORATiNG-PEN.

SPECIFICATION forming part Of Letters Patent No. 516,212, dated March 13, 1894.

Application filed July 15,1893. Serial No. l8O,6til- (N0 model.)

To all whom it may concern.-

Be it known that I, AARON D. LEWIS, a citizen of the United States, residing at Canton, in the county of Lewis and State of Missouri, have invented a new and useful Electric Perforating-Pen, of which the following is a specification.

This invention relates to electric perforating pens; and it has for its object to provide certain improvements in electric perforating pens employed for perforating and indenting the writing material being written upon, such as drafts, checks and other commercial paper, whereby alterations and erasures cannot be made without detection.

To this end the main and primary object of the present invention is to improve upon the construction of electric perforating pens, whereby the same are rendered much more useful and efficient.

With these and other objects in view which will readily appear as the nature of the invention is better understood the same consists in the novel construction, combination and arrangement of parts hereinafter more fully described, illustrated and claimed.

In the accompanying drawingsz Figure l is a perspective View of an electric perforating pen constructed in accordance with this invention. Fig. 2 is a vertical central longitudinal sectional view thereof. Fig. 3 is a detail transverse sectional View on the line x0c of Fig. 2. Fig. 4 is an enlarged sectional View of the needle operating devices removed from the pen-holder casing. Fig. 5 is a simi lar view of the upper end of said devices. Fig. 6 is a detail plan view of the armature disk.

Referring to the accompanying drawings:- A represents a tubular hollow pen-holder having a lower shouldered end a, which re movably receives one end of the hollow penholder tip 13, which tip accommodates in the outer end thereof the spring pen holding plug 0, between which and the pen holder tip B, is adapted to be inserted an ord nary pen point D. The pen point D, is provided on its under side with the perforated guide lug E, the perforation of which is in a line with a guide perforation e, formed in the plug 0.

The pen holder A, is flared at one end as at F, and exteriorly threaded at f, at such end, to removably receive one interiorly threaded end of the cylindrical pen holder casing section G, which is interiorly threaded at both ends and has a binding or set screw g, working in one side thereof. The other interiorly threaded end of the casing G, removably receives the flared exteriorly threaded end of the tubular pen-holder extension cap H, which completely incloses the casing or barrel G, and provides convenient means forinclosing the leading-in wires of the magnet devices to be presently described.

The cylindrical pen holder casing G, is adapted to snugly and removably receive the cylindrical magnet box I, which is held firmly in position within the pen-holder casing by means of the binding or set screw g, clamping thereon. The magnet box I, is closed at one end and is provided with a central opening 2', in such closed end, and said boxincloses therein an ordinary electro magnet J. The electro magnet J, is thus entirely incased within a metallic box, which is itself held in position inside of the hollow pen-holder, and said magnet is provided with alongitudinally perforated core K, one end of which is threaded as at 70, to receive the perforated screw L passing through the central perforation in one end of the magnet box I, and engaging the threaded end of the core of the magnet in order to securely hold the same in position within the magnet box, and the latter is further provided in. one side with a wire groove L, which accommodates one of the magnet wires Z, which passes through a suitable perforation in the closed end of the magnet box, and forms a continuation of one of the leading-in wires on, which are disposed within the cap H, and are suitably connected in a battery circuit in the ordinary manner.

The electro-magnet J, is provided at one end thereof with the projecting guide pin M, which projects beyond the open end of the magnet box to loosely fit in the guide perforation m, in the vibrating armature disk N, which is arranged to vibrate overthe exposed end of the magnet core and the open end of the magnet box, and is held steady in its vibration by said guide pin, which also provides means for connecting the armature diskv in circuit with the other magnet wire to provide for the proper make and break of the circuit. The armature disk N, is provided with a central threaded opening at, which receives the inner threaded end of the reciproeating perforating needle 0, which works through the longitudinally perforated core of the magnet and the perforated screw L. The said longitudinally reciprocating perforating needle 0, is guided to its work by the perforated plug 0 and lug E, and is provided at its outer extremity with a perforating point 0, which vibrates directly back of the pen point, so as to indent or puncture the writing material as the pen is carried thereover in the ordinary manner.

The vibrating armature disk N, is normally held off from the core of the magnet by means of the relieving coil spring P, arranged therebetween and one end of the magnet, so as to relieve the disk from the magnet core immediately upon the breaking of the circuit, and outside of and beyond the armature disk is arranged an adjustable contact spring Q, the lower end of which is adapted to contact with the disk when the latter is held off from the magnet core by the relieving spring P. The contact spring Q, is attached to one end of the adjusting screw R, adjustable in and insulated from the off-standing bracket arm S, attached to one end of the magnet box I and disposed entirely within the cap H. The screw R, has attached thereto one of the leading-in wires w, in order to complete the circuit through the magnet and the armature disk during its vibrations.

Now it will be readily apparent to those skilled in the art that immediately upon closing the circuit through the writing instrument just described, the electro-magnet is rendered active so that its core at once attracts the armature disk, and draws it away from the contact spring thereby reciprocating the perforating needle in one direction, and at the same time immediately breaking the circuit so that the armature disk immediately flies back against the contact spring under the tension of the relieving spring, so as to again close the circuit and cause the vibrations to continue. The employment of the springs at both sides of the armature disk greatly assists the rapid Vibration thereof.

Changes in the form, proportion, and the minor details of construction may be resorted to without departing from the principle or sacrificing any of the advantages of this invention.

Having thus described my invention, what rocating needle, and an upper tapered extension cap inclosing the leading-in wires and providing a proper length for the pen holder, said penholder sections being detachably joined together, substantially as set forth.

2. In an electric perforating pen, a hollow pen holder, the pen point having a guide lug on its under side, an electro magnet removably mounted inside of the hollow'pen holder and having a vibrating armature, springs arranged at both sides of said armature and one of which is included in the electric circuit, and a longitudinally reciprocating needle removably attached at one end to the magnet armature and working in a direct line with the pen point, substantially asset forth.

3. In an electric perforating pen, the'sectional hollow pen holder consisting of opposite exteriorly threaded tubular portions and an intermediate enlarged cylindrical casing removably receiving the ends of such 'opposite portions, the pen point inserted in one end of the pen holder, an electro magnet removably clamped in position inside of the pen holder casing and having a vibrating armature, the leading-in wires inclosed within one end of the holderand connected with the magnet devices, and a longitudinally reciprocating perforating needle connected atone end to the magnet armature and adapted to have its other end vibrate beneath and beyond the pen point, substantially'as set forth.

4. In an electric perforating pen, a hollow pen holder having a centrally disposed cylindrical casing, the pen point having a guide lug on its under side, a cylindrical magnet box removably clamped in position within the pen-holder casing, an electro magnet similarly held in position within the magnet box, a vibrating armature disk arranged at one end of the magnet box and the magnet therein, circuit connections, and a reciprocating perforating needle having a perforating point at one end working through the pen point guide lug and attached at its other end to the armature disk, substantially as set forth.

5. In an electric perforating pen, a hollow pen holder having a cylindrical casing in a line with the body thereof, a cylindrical magnet box closed and perforated at one end and adapted to be removably clamped within the pen holder casing, an electro-magnet mounted within the magnet box and having a perforated core threaded at one end, a perforated screw passing through the perforated end of the magnet box and engaging the threaded end of the magnet core,a vibrating armature disposed at one end of the magnet box, circuit connections, and a longitudinally reciprocating perforating needle working through the perforated magnet core and the perforated screw and attached at its inner end to the armature disk, substantially as set forth.

6. In an electric perforating pen, ahollow pen holder having a cylindrical casing,a cylindrical magnet box adapted to be clamped inside of said casing, and having a longitudinally perforated core, and a guide pin at one end, a vibrating armature disk disposed at one end of the magnet box and having a perforation loosely moving over said guide pin, a relieving spring arranged between the armature disk and the magnet, an oil-standing bracket arm attached to one end of the magnet box, a contact spring adjustably held 01f from said bracket arm and disposed at one side of the armature disk, circuit connections, the pen point, and the longitudinally reciprocating perforating needle removably attached at one end to said vibrating armature, substantially as set forth.

In testimony that I claim the foregoing as my ownI have hereto affixed mysignaturein the presence of two witnesses.

AARON D. LEWIS.

Witnesses:

B. H. SMITH, J AS. E. OLDHAM.