US1122523A - Electric paper-cutter. - Google Patents

Description

C. R. MANNERING.

ELECTRIC PAPER CUTTER.

APPLICATION FILED MAY 19,1913.

1 ,1 22,523. Patented Dec. 29, 1914.

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CHARLES R. MANNERING, OF NEW WESTMINSTER, BRITISH COLUMBIA, CANADA.

ELECTRIC PAPER-CUTTER.

Application filedMay 19, 1913.

To all whom it may concern:

Be it known that 1, CHARLES R. MANNER- me, of the city of New Westminster, in the Province of British Columbia, Canada, have invented certain new and useful Improvements in Electric Paper-Cutters, of which the following is a specification.

My invention relates to improvements in electric paper cutters, and the object of my invention is to devise a paper cutter for hand use in cutting patterns, borders, stencils, or the like out of paper, cloth, or other similar material, which cutter can be connected to, and operated from, an ordinary incandescent lamp socket, and which shall be actuated by alternating current, instead of direct current as in present machines for a similar purpose, thus doing away with expensive platinum points and a spark, as in direct current, and producing a simple, safe, inexpensive and easily handled machine. I attain this objectby the means illustrated in the accompanying drawings in which Figure 1 is a'longitudinal vertical section on the center line of the casing, the mechanism being shown in full. Fig. 2 is a plan of the paper cutter, top of easing being removed to show the parts. Fig. 3 is an end view, looking on the needle end, of the machine.

Similar letters refer to similar parts throughout the several views.

A is a casing which incloses and carries the working parts of my complete paper cutter.

B represents the electromagnetic coils, which are wound in series, and are mounted as shown on an iron baseplate C. This baseplate C may be secured to the casing in any suitable manner, such as that shown, that is, by being held to the top of the casing A by screws passing through the casing into the baseplate.

Running along underneath the coils B in close proximity thereto is a vibrator D, which consists of a thin steel bar, bent at its inner end and fixed to the baseplate C as shown in Fig. 1 in such a manner as to give it a spring like action. The outer end of this vibrator D has attached to it a socket E, adapted to carry a needle F and having a screw G for tightening the needle in the socket so that it will be held perfectly firm therein.

H is a spring switch fastened to the side of the casing A, and having a terminal H Specification of Letters Patent.

Patented Dec. 29, 1914:.

Serial No. 768,592.

in connection with its fixed end. This switch H is adapted to be pressed by the user when handling the device on to a terminal I, also fastened in the casing A, in order to complete the circuit and cause the machine to operate, as will be hereinafter more fully described. By releasing H from contact with I the circuit is broken and the machine will cease to work.

Any ordinary incandescent lamp J is inserted in the electrical circuit to act as a transformer, or a transformer may be inserted, at a convenient point between the main leads and the paper cutter terminals, to run in series with the coils B, so that the full pressure in the main wires will not send current through the coils B, as this would be too strong for the winding of the coils;

the insertion of the lamp J in the circuit, or of a transformer, consequently insures that less than the amount of current used by an ordinary incandescent lamp will pass through the coils B in the operation of the cutter.

K is the bottom of the casing A of my paper cutter, and is'made separate from the body of the casing. It is hinged at its inner end on a pin K as shown, and fits in between the sides of'the casing, being free to move up and down therebetween. The pur pose of this is so that the machine can be adjusted to different thicknesses of material to be out. To provide for this adjustment a plate L is fitted at a suitable position between the sides of the casing A and firmly held thereto by screws or other similar means. This plate L has a threaded hole tapped in it to receive the screw M, which is also passed through, but not threaded into the bottom K of the casing, so that K will be lifted up or lowered according as the screw M is screwed in or out of the plate L, and consequently the needle will penetrate more or less as K is raised or lowered as called for where the fabric is of greater or less thickness, said fabric being fed or passed upon the bottom K.

To provide for the speed adjustment of the needle a screw N is screwed into and through the plate L. The point of this screw N can be brought against the vibrator D to regulate its distance from the coils B, so that the vibrator may be moved nearer to, or farther away from, the poles, B B B and B of the coils, thus increasing or decreasing the throw of the vibrator. This screw l passes clear through the bottom K of the casing and has no connection therewith, a clearing hole 0 being provided so that access may be had to work the screw N as required.

The wiring of the machine is as follows One wire is connected direct to the innermost coil to carry the electrical current thereto and thence in series through the other coils and to the terminal H The other wire P leads direct to the terminal I, being connected thereto, from which it will be seen, referring to Fig. 2, that when the spring switch H is pressed on to I the electrical circuit will be complete.

The action of my paper cutter is as follows :Attachment having been made to a lamp socket, when the switch H is closed by the operator, bringing the two terminals H and I in contact and completing the circuit, the alternating current passing through the coils B causes the vibrator D to move up and down very rapidly toward and away from the poles B B B and E the vibrations varying as to the distance of the vibrator from the poles. If then the'machine be laid on the material to be cut, the needle, on the down stroke, will pierce it, and, as the action is very rapid, the machine can be moved over the material to follow a line or cut out anything according to the will of the operator, cutting the material as if it were a knife. The sound of the device when in operation is the well known buzz of a vibrator coil.

The machine must be used only with alternating current, as it is from the alternations that it derives its action.

It will be seen, therefore, that I have devised a simple electric paper cutter which can be operated by alternating current from any ordinary incandescent lamp socket and which is very convenient for hand use. It will be seen further that, since alternating current is used instead of direct current, the machine is inexpensive both to manufacture and maintain, since no expensive platinum points are necessary, as in direct current devices to take care of the spark, for there is no spark in my machine, A still further feature of my paper cutter is that, as it is used in an ordinary lamp circuit, very little electrical energy is consumed in its operation.

lVhat I claim as my invention is 1. An electrically operated paper cutter comprising a main casing, a bottom pivoted at one end of the casing, electromagnets supported in the casing, a resilient armature co-acting with the electro-magnets, a needle secured to said armature, a plate fitted and held between the sides of said casing and a set-screw extending through the pivoted bot tom and engaging said plate, said set screw adjustably supporting said pivotal bottom as and for the purpose specified.

2. An electrically operated paper cutter comprising a main casing, a bottom pivoted at one end of the casing, electromagnets supported in the casing, a resilient armature coacting with the electromagnets, a needle secured to said armature, a plate fitted and held between the sides of said casing, a set screw extending through the pivoted bottom and engaging said plate, and means for ad justing the distance between the armature and magnets.

Dated at Vancouver, B. (3., this 22nd day of April, 1913.

CHARLES R. MANNERING.

Witnesses:

J. N. ELLIS, JAMEs TAYLOR,

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents. Washington, D. C.

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